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Fix insertion of radio menu items in wxOSX wxMenu.
[wxWidgets.git] / src / generic / grid.cpp
diff --git a/src/generic/grid.cpp b/src/generic/grid.cpp
index 60eb6e5a0364eff9dcb6a5492f093a1386adee3b..751dc611433d4da5c53c64173b78e1035af5f5cc 100644 (file)
--- a/src/generic/grid.cpp
+++ b/src/generic/grid.cpp
@@ -1,38 +1,33 @@
 ///////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////
-// Name:        generic/grid.cpp
+// Name:        src/generic/grid.cpp
 // Purpose:     wxGrid and related classes
 // Author:      Michael Bedward (based on code by Julian Smart, Robin Dunn)
 // Purpose:     wxGrid and related classes
 // Author:      Michael Bedward (based on code by Julian Smart, Robin Dunn)
-// Modified by:
+// Modified by: Robin Dunn, Vadim Zeitlin, Santiago Palacios
 // Created:     1/08/1999
 // RCS-ID:      $Id$
 // Copyright:   (c) Michael Bedward (mbedward@ozemail.com.au)
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Created:     1/08/1999
 // RCS-ID:      $Id$
 // Copyright:   (c) Michael Bedward (mbedward@ozemail.com.au)
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-// ============================================================================
-// declarations
-// ============================================================================
-
-// ----------------------------------------------------------------------------
-// headers
-// ----------------------------------------------------------------------------
+/*
+    TODO:
 
 
-#ifdef __GNUG__
-    #pragma implementation "grid.h"
-#endif
+    - Replace use of wxINVERT with wxOverlay
+    - Make Begin/EndBatch() the same as the generic Freeze/Thaw()
+    - Review the column reordering code, it's a mess.
+    - Implement row reordering after dealing with the columns.
+ */
 
 // For compilers that support precompilation, includes "wx/wx.h".
 #include "wx/wxprec.h"
 
 
 // For compilers that support precompilation, includes "wx/wx.h".
 #include "wx/wxprec.h"
 
-#include "wx/defs.h"
-
 #ifdef __BORLANDC__
     #pragma hdrstop
 #endif
 
 #ifdef __BORLANDC__
     #pragma hdrstop
 #endif
 
-#if !defined(wxUSE_NEW_GRID) || !(wxUSE_NEW_GRID)
-#include "gridg.cpp"
-#else
+#if wxUSE_GRID
+
+#include "wx/grid.h"
 
 #ifndef WX_PRECOMP
     #include "wx/utils.h"
 
 #ifndef WX_PRECOMP
     #include "wx/utils.h"
@@ -43,7713 +38,9316 @@
     #include "wx/checkbox.h"
     #include "wx/combobox.h"
     #include "wx/valtext.h"
     #include "wx/checkbox.h"
     #include "wx/combobox.h"
     #include "wx/valtext.h"
+    #include "wx/intl.h"
+    #include "wx/math.h"
+    #include "wx/listbox.h"
 #endif
 
 #include "wx/textfile.h"
 #include "wx/spinctrl.h"
 #include "wx/tokenzr.h"
 #endif
 
 #include "wx/textfile.h"
 #include "wx/spinctrl.h"
 #include "wx/tokenzr.h"
+#include "wx/renderer.h"
+#include "wx/headerctrl.h"
+#include "wx/hashset.h"
 
 
-#include "wx/grid.h"
 #include "wx/generic/gridsel.h"
 #include "wx/generic/gridsel.h"
+#include "wx/generic/gridctrl.h"
+#include "wx/generic/grideditors.h"
+#include "wx/generic/private/grid.h"
 
 
-// ----------------------------------------------------------------------------
-// array classes
-// ----------------------------------------------------------------------------
-
-WX_DEFINE_ARRAY(wxGridCellAttr *, wxArrayAttrs);
-
-struct wxGridCellWithAttr
-{
-    wxGridCellWithAttr(int row, int col, wxGridCellAttr *attr_)
-        : coords(row, col), attr(attr_)
-    {
-    }
+const char wxGridNameStr[] = "grid";
 
 
-    ~wxGridCellWithAttr()
-    {
-        attr->DecRef();
-    }
+#if defined(__WXMOTIF__)
+    #define WXUNUSED_MOTIF(identifier)  WXUNUSED(identifier)
+#else
+    #define WXUNUSED_MOTIF(identifier)  identifier
+#endif
 
 
-    wxGridCellCoords coords;
-    wxGridCellAttr  *attr;
-};
+#if defined(__WXGTK__)
+    #define WXUNUSED_GTK(identifier)    WXUNUSED(identifier)
+#else
+    #define WXUNUSED_GTK(identifier)    identifier
+#endif
 
 
-WX_DECLARE_OBJARRAY(wxGridCellWithAttr, wxGridCellWithAttrArray);
+// Required for wxIs... functions
+#include <ctype.h>
 
 
-#include "wx/arrimpl.cpp"
+WX_DECLARE_HASH_SET_WITH_DECL_PTR(int, wxIntegerHash, wxIntegerEqual,
+                                  wxGridFixedIndicesSet, class WXDLLIMPEXP_ADV);
 
 
-WX_DEFINE_OBJARRAY(wxGridCellCoordsArray)
-WX_DEFINE_OBJARRAY(wxGridCellWithAttrArray)
 
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
-// private classes
+// globals
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 
-class WXDLLEXPORT wxGridRowLabelWindow : public wxWindow
+namespace
 {
 {
-public:
-    wxGridRowLabelWindow() { m_owner = (wxGrid *)NULL; }
-    wxGridRowLabelWindow( wxGrid *parent, wxWindowID id,
-                          const wxPoint &pos, const wxSize &size );
-
-private:
-    wxGrid   *m_owner;
-
-    void OnPaint( wxPaintEvent& event );
-    void OnMouseEvent( wxMouseEvent& event );
-    void OnKeyDown( wxKeyEvent& event );
-
-    DECLARE_DYNAMIC_CLASS(wxGridRowLabelWindow)
-    DECLARE_EVENT_TABLE()
-};
 
 
+//#define DEBUG_ATTR_CACHE
+#ifdef DEBUG_ATTR_CACHE
+    static size_t gs_nAttrCacheHits = 0;
+    static size_t gs_nAttrCacheMisses = 0;
+#endif
 
 
-class WXDLLEXPORT wxGridColLabelWindow : public wxWindow
+// this struct simply combines together the default header renderers
+//
+// as the renderers ctors are trivial, there is no problem with making them
+// globals
+struct DefaultHeaderRenderers
 {
 {
-public:
-    wxGridColLabelWindow() { m_owner = (wxGrid *)NULL; }
-    wxGridColLabelWindow( wxGrid *parent, wxWindowID id,
-                          const wxPoint &pos, const wxSize &size );
-
-private:
-    wxGrid   *m_owner;
+    wxGridColumnHeaderRendererDefault colRenderer;
+    wxGridRowHeaderRendererDefault rowRenderer;
+    wxGridCornerHeaderRendererDefault cornerRenderer;
+} gs_defaultHeaderRenderers;
 
 
-    void OnPaint( wxPaintEvent &event );
-    void OnMouseEvent( wxMouseEvent& event );
-    void OnKeyDown( wxKeyEvent& event );
+} // anonymous namespace
 
 
-    DECLARE_DYNAMIC_CLASS(wxGridColLabelWindow)
-    DECLARE_EVENT_TABLE()
-};
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
 
 
+wxGridCellCoords wxGridNoCellCoords( -1, -1 );
+wxRect wxGridNoCellRect( -1, -1, -1, -1 );
 
 
-class WXDLLEXPORT wxGridCornerLabelWindow : public wxWindow
+namespace
 {
 {
-public:
-    wxGridCornerLabelWindow() { m_owner = (wxGrid *)NULL; }
-    wxGridCornerLabelWindow( wxGrid *parent, wxWindowID id,
-                             const wxPoint &pos, const wxSize &size );
-
-private:
-    wxGrid *m_owner;
-
-    void OnMouseEvent( wxMouseEvent& event );
-    void OnKeyDown( wxKeyEvent& event );
-    void OnPaint( wxPaintEvent& event );
 
 
-    DECLARE_DYNAMIC_CLASS(wxGridCornerLabelWindow)
-    DECLARE_EVENT_TABLE()
-};
-
-class WXDLLEXPORT wxGridWindow : public wxPanel
-{
-public:
-    wxGridWindow()
-    {
-        m_owner = (wxGrid *)NULL;
-        m_rowLabelWin = (wxGridRowLabelWindow *)NULL;
-        m_colLabelWin = (wxGridColLabelWindow *)NULL;
-    }
+// scroll line size
+const size_t GRID_SCROLL_LINE_X = 15;
+const size_t GRID_SCROLL_LINE_Y = GRID_SCROLL_LINE_X;
 
 
-    wxGridWindow( wxGrid *parent,
-                  wxGridRowLabelWindow *rowLblWin,
-                  wxGridColLabelWindow *colLblWin,
-                  wxWindowID id, const wxPoint &pos, const wxSize &size );
-    ~wxGridWindow();
+// the size of hash tables used a bit everywhere (the max number of elements
+// in these hash tables is the number of rows/columns)
+const int GRID_HASH_SIZE = 100;
 
 
-    void ScrollWindow( int dx, int dy, const wxRect *rect );
+// the minimal distance in pixels the mouse needs to move to start a drag
+// operation
+const int DRAG_SENSITIVITY = 3;
 
 
-private:
-    wxGrid                   *m_owner;
-    wxGridRowLabelWindow     *m_rowLabelWin;
-    wxGridColLabelWindow     *m_colLabelWin;
+} // anonymous namespace
 
 
-    void OnPaint( wxPaintEvent &event );
-    void OnMouseEvent( wxMouseEvent& event );
-    void OnKeyDown( wxKeyEvent& );
-    void OnEraseBackground( wxEraseEvent& );
+#include "wx/arrimpl.cpp"
 
 
+WX_DEFINE_OBJARRAY(wxGridCellCoordsArray)
+WX_DEFINE_OBJARRAY(wxGridCellWithAttrArray)
 
 
-    DECLARE_DYNAMIC_CLASS(wxGridWindow)
-    DECLARE_EVENT_TABLE()
-};
+// ----------------------------------------------------------------------------
+// events
+// ----------------------------------------------------------------------------
 
 
+wxDEFINE_EVENT( wxEVT_GRID_CELL_LEFT_CLICK, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_CELL_RIGHT_CLICK, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_CELL_LEFT_DCLICK, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_CELL_RIGHT_DCLICK, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_CELL_BEGIN_DRAG, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_LABEL_LEFT_CLICK, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_LABEL_RIGHT_CLICK, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_LABEL_LEFT_DCLICK, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_LABEL_RIGHT_DCLICK, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_ROW_SIZE, wxGridSizeEvent );
+wxDEFINE_EVENT( wxEVT_GRID_COL_SIZE, wxGridSizeEvent );
+wxDEFINE_EVENT( wxEVT_GRID_COL_AUTO_SIZE, wxGridSizeEvent );
+wxDEFINE_EVENT( wxEVT_GRID_COL_MOVE, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_COL_SORT, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_RANGE_SELECT, wxGridRangeSelectEvent );
+wxDEFINE_EVENT( wxEVT_GRID_CELL_CHANGING, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_CELL_CHANGED, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_SELECT_CELL, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_EDITOR_SHOWN, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_EDITOR_HIDDEN, wxGridEvent );
+wxDEFINE_EVENT( wxEVT_GRID_EDITOR_CREATED, wxGridEditorCreatedEvent );
+wxDEFINE_EVENT( wxEVT_GRID_TABBING, wxGridEvent );
 
 
+// ----------------------------------------------------------------------------
+// private helpers
+// ----------------------------------------------------------------------------
 
 
-class wxGridCellEditorEvtHandler : public wxEvtHandler
+namespace
 {
 {
-public:
-    wxGridCellEditorEvtHandler()
-        : m_grid(0), m_editor(0)
-        { }
-    wxGridCellEditorEvtHandler(wxGrid* grid, wxGridCellEditor* editor)
-        : m_grid(grid), m_editor(editor)
-        { }
-
-    void OnKeyDown(wxKeyEvent& event);
-    void OnChar(wxKeyEvent& event);
+    
+    // ensure that first is less or equal to second, swapping the values if
+    // necessary
+    void EnsureFirstLessThanSecond(int& first, int& second)
+    {
+        if ( first > second )
+            wxSwap(first, second);
+    }
+    
+} // anonymous namespace
 
 
-private:
-    wxGrid*             m_grid;
-    wxGridCellEditor*   m_editor;
-    DECLARE_DYNAMIC_CLASS(wxGridCellEditorEvtHandler)
-    DECLARE_EVENT_TABLE()
-};
+// ============================================================================
+// implementation
+// ============================================================================
 
 
+IMPLEMENT_ABSTRACT_CLASS(wxGridCellEditorEvtHandler, wxEvtHandler)
 
 
-IMPLEMENT_DYNAMIC_CLASS( wxGridCellEditorEvtHandler, wxEvtHandler )
 BEGIN_EVENT_TABLE( wxGridCellEditorEvtHandler, wxEvtHandler )
 BEGIN_EVENT_TABLE( wxGridCellEditorEvtHandler, wxEvtHandler )
+    EVT_KILL_FOCUS( wxGridCellEditorEvtHandler::OnKillFocus )
     EVT_KEY_DOWN( wxGridCellEditorEvtHandler::OnKeyDown )
     EVT_CHAR( wxGridCellEditorEvtHandler::OnChar )
 END_EVENT_TABLE()
 
     EVT_KEY_DOWN( wxGridCellEditorEvtHandler::OnKeyDown )
     EVT_CHAR( wxGridCellEditorEvtHandler::OnChar )
 END_EVENT_TABLE()
 
+BEGIN_EVENT_TABLE(wxGridHeaderCtrl, wxHeaderCtrl)
+    EVT_HEADER_CLICK(wxID_ANY, wxGridHeaderCtrl::OnClick)
+    EVT_HEADER_DCLICK(wxID_ANY, wxGridHeaderCtrl::OnDoubleClick)
+    EVT_HEADER_RIGHT_CLICK(wxID_ANY, wxGridHeaderCtrl::OnRightClick)
 
 
+    EVT_HEADER_BEGIN_RESIZE(wxID_ANY, wxGridHeaderCtrl::OnBeginResize)
+    EVT_HEADER_RESIZING(wxID_ANY, wxGridHeaderCtrl::OnResizing)
+    EVT_HEADER_END_RESIZE(wxID_ANY, wxGridHeaderCtrl::OnEndResize)
 
 
-// ----------------------------------------------------------------------------
-// the internal data representation used by wxGridCellAttrProvider
-// ----------------------------------------------------------------------------
+    EVT_HEADER_BEGIN_REORDER(wxID_ANY, wxGridHeaderCtrl::OnBeginReorder)
+    EVT_HEADER_END_REORDER(wxID_ANY, wxGridHeaderCtrl::OnEndReorder)
+END_EVENT_TABLE()
 
 
-// this class stores attributes set for cells
-class WXDLLEXPORT wxGridCellAttrData
+wxGridOperations& wxGridRowOperations::Dual() const
 {
 {
-public:
-    void SetAttr(wxGridCellAttr *attr, int row, int col);
-    wxGridCellAttr *GetAttr(int row, int col) const;
-    void UpdateAttrRows( size_t pos, int numRows );
-    void UpdateAttrCols( size_t pos, int numCols );
-
-private:
-    // searches for the attr for given cell, returns wxNOT_FOUND if not found
-    int FindIndex(int row, int col) const;
+    static wxGridColumnOperations s_colOper;
 
 
-    wxGridCellWithAttrArray m_attrs;
-};
+    return s_colOper;
+}
 
 
-// this class stores attributes set for rows or columns
-class WXDLLEXPORT wxGridRowOrColAttrData
+wxGridOperations& wxGridColumnOperations::Dual() const
 {
 {
-public:
-    // empty ctor to suppress warnings
-    wxGridRowOrColAttrData() { }
-    ~wxGridRowOrColAttrData();
+    static wxGridRowOperations s_rowOper;
 
 
-    void SetAttr(wxGridCellAttr *attr, int rowOrCol);
-    wxGridCellAttr *GetAttr(int rowOrCol) const;
-    void UpdateAttrRowsOrCols( size_t pos, int numRowsOrCols );
+    return s_rowOper;
+}
 
 
-private:
-    wxArrayInt m_rowsOrCols;
-    wxArrayAttrs m_attrs;
-};
+// ----------------------------------------------------------------------------
+// wxGridCellWorker is an (almost) empty common base class for
+// wxGridCellRenderer and wxGridCellEditor managing ref counting
+// ----------------------------------------------------------------------------
 
 
-// NB: this is just a wrapper around 3 objects: one which stores cell
-//     attributes, and 2 others for row/col ones
-class WXDLLEXPORT wxGridCellAttrProviderData
+void wxGridCellWorker::SetParameters(const wxString& WXUNUSED(params))
 {
 {
-public:
-    wxGridCellAttrData m_cellAttrs;
-    wxGridRowOrColAttrData m_rowAttrs,
-                           m_colAttrs;
-};
+    // nothing to do
+}
 
 
+wxGridCellWorker::~wxGridCellWorker()
+{
+}
 
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
-// data structures used for the data type registry
+// wxGridHeaderLabelsRenderer and related classes
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 
-struct wxGridDataTypeInfo
+void wxGridHeaderLabelsRenderer::DrawLabel(const wxGrid& grid,
+                                           wxDC& dc,
+                                           const wxString& value,
+                                           const wxRect& rect,
+                                           int horizAlign,
+                                           int vertAlign,
+                                           int textOrientation) const
 {
 {
-    wxGridDataTypeInfo(const wxString& typeName,
-                       wxGridCellRenderer* renderer,
-                       wxGridCellEditor* editor)
-        : m_typeName(typeName), m_renderer(renderer), m_editor(editor)
-        { }
-
-    ~wxGridDataTypeInfo()
-    {
-        wxSafeDecRef(m_renderer);
-        wxSafeDecRef(m_editor);
-    }
-
-    wxString            m_typeName;
-    wxGridCellRenderer* m_renderer;
-    wxGridCellEditor*   m_editor;
-};
-
-
-WX_DEFINE_ARRAY(wxGridDataTypeInfo*, wxGridDataTypeInfoArray);
+    dc.SetBackgroundMode(wxBRUSHSTYLE_TRANSPARENT);
+    dc.SetTextForeground(grid.GetLabelTextColour());
+    dc.SetFont(grid.GetLabelFont());
+    grid.DrawTextRectangle(dc, value, rect, horizAlign, vertAlign, textOrientation);
+}
 
 
 
 
-class WXDLLEXPORT wxGridTypeRegistry
+void wxGridRowHeaderRendererDefault::DrawBorder(const wxGrid& WXUNUSED(grid),
+                                                wxDC& dc,
+                                                wxRect& rect) const
 {
 {
-public:
-    ~wxGridTypeRegistry();
-
-    void RegisterDataType(const wxString& typeName,
-                     wxGridCellRenderer* renderer,
-                     wxGridCellEditor* editor);
+    dc.SetPen(wxPen(wxSystemSettings::GetColour(wxSYS_COLOUR_3DSHADOW)));
+    dc.DrawLine(rect.GetRight(), rect.GetTop(),
+                rect.GetRight(), rect.GetBottom());
+    dc.DrawLine(rect.GetLeft(), rect.GetTop(),
+                rect.GetLeft(), rect.GetBottom());
+    dc.DrawLine(rect.GetLeft(), rect.GetBottom(),
+                rect.GetRight() + 1, rect.GetBottom());
 
 
-    // find one of already registered data types
-    int FindRegisteredDataType(const wxString& typeName);
+    dc.SetPen(*wxWHITE_PEN);
+    dc.DrawLine(rect.GetLeft() + 1, rect.GetTop(),
+                rect.GetLeft() + 1, rect.GetBottom());
+    dc.DrawLine(rect.GetLeft() + 1, rect.GetTop(),
+                rect.GetRight(), rect.GetTop());
 
 
-    // try to FindRegisteredDataType(), if this fails and typeName is one of
-    // standard typenames, register it and return its index
-    int FindDataType(const wxString& typeName);
-
-    // try to FindDataType(), if it fails see if it is not one of already
-    // registered data types with some params in which case clone the
-    // registered data type and set params for it
-    int FindOrCloneDataType(const wxString& typeName);
+    rect.Deflate(2);
+}
 
 
-    wxGridCellRenderer* GetRenderer(int index);
-    wxGridCellEditor*   GetEditor(int index);
+void wxGridColumnHeaderRendererDefault::DrawBorder(const wxGrid& WXUNUSED(grid),
+                                                   wxDC& dc,
+                                                   wxRect& rect) const
+{
+    dc.SetPen(wxPen(wxSystemSettings::GetColour(wxSYS_COLOUR_3DSHADOW)));
+    dc.DrawLine(rect.GetRight(), rect.GetTop(),
+                rect.GetRight(), rect.GetBottom());
+    dc.DrawLine(rect.GetLeft(), rect.GetTop(),
+                rect.GetRight(), rect.GetTop());
+    dc.DrawLine(rect.GetLeft(), rect.GetBottom(),
+                rect.GetRight() + 1, rect.GetBottom());
 
 
-private:
-    wxGridDataTypeInfoArray m_typeinfo;
-};
+    dc.SetPen(*wxWHITE_PEN);
+    dc.DrawLine(rect.GetLeft(), rect.GetTop() + 1,
+                rect.GetLeft(), rect.GetBottom());
+    dc.DrawLine(rect.GetLeft(), rect.GetTop() + 1,
+                rect.GetRight(), rect.GetTop() + 1);
 
 
-// ----------------------------------------------------------------------------
-// conditional compilation
-// ----------------------------------------------------------------------------
+    rect.Deflate(2);
+}
 
 
-#ifndef WXGRID_DRAW_LINES
-#define WXGRID_DRAW_LINES 1
-#endif
+void wxGridCornerHeaderRendererDefault::DrawBorder(const wxGrid& WXUNUSED(grid),
+                                                   wxDC& dc,
+                                                   wxRect& rect) const
+{
+    dc.SetPen(wxPen(wxSystemSettings::GetColour(wxSYS_COLOUR_3DSHADOW)));
+    dc.DrawLine(rect.GetRight() - 1, rect.GetBottom() - 1,
+                rect.GetRight() - 1, rect.GetTop());
+    dc.DrawLine(rect.GetRight() - 1, rect.GetBottom() - 1,
+                rect.GetLeft(), rect.GetBottom() - 1);
+    dc.DrawLine(rect.GetLeft(), rect.GetTop(),
+                rect.GetRight(), rect.GetTop());
+    dc.DrawLine(rect.GetLeft(), rect.GetTop(),
+                rect.GetLeft(), rect.GetBottom());
 
 
-// ----------------------------------------------------------------------------
-// globals
-// ----------------------------------------------------------------------------
+    dc.SetPen(*wxWHITE_PEN);
+    dc.DrawLine(rect.GetLeft() + 1, rect.GetTop() + 1,
+                rect.GetRight() - 1, rect.GetTop() + 1);
+    dc.DrawLine(rect.GetLeft() + 1, rect.GetTop() + 1,
+                rect.GetLeft() + 1, rect.GetBottom() - 1);
 
 
-//#define DEBUG_ATTR_CACHE
-#ifdef DEBUG_ATTR_CACHE
-    static size_t gs_nAttrCacheHits = 0;
-    static size_t gs_nAttrCacheMisses = 0;
-#endif // DEBUG_ATTR_CACHE
+    rect.Deflate(2);
+}
 
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
-// constants
+// wxGridCellAttr
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 
-wxGridCellCoords wxGridNoCellCoords( -1, -1 );
-wxRect           wxGridNoCellRect( -1, -1, -1, -1 );
+void wxGridCellAttr::Init(wxGridCellAttr *attrDefault)
+{
+    m_isReadOnly = Unset;
 
 
-// scroll line size
-// TODO: fixed so far - make configurable later (and also different for x/y)
-static const size_t GRID_SCROLL_LINE = 10;
+    m_renderer = NULL;
+    m_editor = NULL;
 
 
-// the size of hash tables used a bit everywhere (the max number of elements
-// in these hash tables is the number of rows/columns)
-static const int GRID_HASH_SIZE = 100;
+    m_attrkind = wxGridCellAttr::Cell;
 
 
-// ============================================================================
-// implementation
-// ============================================================================
+    m_sizeRows = m_sizeCols = 1;
+    m_overflow = UnsetOverflow;
 
 
-// ----------------------------------------------------------------------------
-// wxGridCellEditor
-// ----------------------------------------------------------------------------
+    SetDefAttr(attrDefault);
+}
 
 
-wxGridCellEditor::wxGridCellEditor()
+wxGridCellAttr *wxGridCellAttr::Clone() const
 {
 {
-    m_control = NULL;
-}
+    wxGridCellAttr *attr = new wxGridCellAttr(m_defGridAttr);
+
+    if ( HasTextColour() )
+        attr->SetTextColour(GetTextColour());
+    if ( HasBackgroundColour() )
+        attr->SetBackgroundColour(GetBackgroundColour());
+    if ( HasFont() )
+        attr->SetFont(GetFont());
+    if ( HasAlignment() )
+        attr->SetAlignment(m_hAlign, m_vAlign);
 
 
+    attr->SetSize( m_sizeRows, m_sizeCols );
 
 
-wxGridCellEditor::~wxGridCellEditor()
-{
-    Destroy();
-}
+    if ( m_renderer )
+    {
+        attr->SetRenderer(m_renderer);
+        m_renderer->IncRef();
+    }
+    if ( m_editor )
+    {
+        attr->SetEditor(m_editor);
+        m_editor->IncRef();
+    }
 
 
-void wxGridCellEditor::Create(wxWindow* WXUNUSED(parent),
-                              wxWindowID WXUNUSED(id),
-                              wxEvtHandler* evtHandler)
-{
-    if ( evtHandler )
-        m_control->PushEventHandler(evtHandler);
-}
+    if ( IsReadOnly() )
+        attr->SetReadOnly();
 
 
-void wxGridCellEditor::PaintBackground(const wxRect& rectCell,
-                                       wxGridCellAttr *attr)
-{
-    // erase the background because we might not fill the cell
-    wxClientDC dc(m_control->GetParent());
-    dc.SetPen(*wxTRANSPARENT_PEN);
-    dc.SetBrush(wxBrush(attr->GetBackgroundColour(), wxSOLID));
-    dc.DrawRectangle(rectCell);
+    attr->SetOverflow( m_overflow == Overflow );
+    attr->SetKind( m_attrkind );
 
 
-    // redraw the control we just painted over
-    m_control->Refresh();
+    return attr;
 }
 
 }
 
-void wxGridCellEditor::Destroy()
+void wxGridCellAttr::MergeWith(wxGridCellAttr *mergefrom)
 {
 {
-    if (m_control)
+    if ( !HasTextColour() && mergefrom->HasTextColour() )
+        SetTextColour(mergefrom->GetTextColour());
+    if ( !HasBackgroundColour() && mergefrom->HasBackgroundColour() )
+        SetBackgroundColour(mergefrom->GetBackgroundColour());
+    if ( !HasFont() && mergefrom->HasFont() )
+        SetFont(mergefrom->GetFont());
+    if ( !HasAlignment() && mergefrom->HasAlignment() )
     {
     {
-        m_control->PopEventHandler(TRUE /* delete it*/);
+        int hAlign, vAlign;
+        mergefrom->GetAlignment( &hAlign, &vAlign);
+        SetAlignment(hAlign, vAlign);
+    }
+    if ( !HasSize() && mergefrom->HasSize() )
+        mergefrom->GetSize( &m_sizeRows, &m_sizeCols );
 
 
-        m_control->Destroy();
-        m_control = NULL;
+    // Directly access member functions as GetRender/Editor don't just return
+    // m_renderer/m_editor
+    //
+    // Maybe add support for merge of Render and Editor?
+    if (!HasRenderer() && mergefrom->HasRenderer() )
+    {
+        m_renderer = mergefrom->m_renderer;
+        m_renderer->IncRef();
+    }
+    if ( !HasEditor() && mergefrom->HasEditor() )
+    {
+        m_editor =  mergefrom->m_editor;
+        m_editor->IncRef();
     }
     }
+    if ( !HasReadWriteMode() && mergefrom->HasReadWriteMode() )
+        SetReadOnly(mergefrom->IsReadOnly());
+
+    if (!HasOverflowMode() && mergefrom->HasOverflowMode() )
+        SetOverflow(mergefrom->GetOverflow());
+
+    SetDefAttr(mergefrom->m_defGridAttr);
 }
 
 }
 
-void wxGridCellEditor::Show(bool show, wxGridCellAttr *attr)
+void wxGridCellAttr::SetSize(int num_rows, int num_cols)
 {
 {
-    wxASSERT_MSG(m_control,
-                 wxT("The wxGridCellEditor must be Created first!"));
-    m_control->Show(show);
+    // The size of a cell is normally 1,1
 
 
-    if ( show )
-    {
-        // set the colours/fonts if we have any
-        if ( attr )
-        {
-            m_colFgOld = m_control->GetForegroundColour();
-            m_control->SetForegroundColour(attr->GetTextColour());
+    // If this cell is larger (2,2) then this is the top left cell
+    // the other cells that will be covered (lower right cells) must be
+    // set to negative or zero values such that
+    // row + num_rows of the covered cell points to the larger cell (this cell)
+    // same goes for the col + num_cols.
 
 
-            m_colBgOld = m_control->GetBackgroundColour();
-            m_control->SetBackgroundColour(attr->GetBackgroundColour());
+    // Size of 0,0 is NOT valid, neither is <=0 and any positive value
 
 
-            m_fontOld = m_control->GetFont();
-            m_control->SetFont(attr->GetFont());
+    wxASSERT_MSG( (!((num_rows > 0) && (num_cols <= 0)) ||
+                  !((num_rows <= 0) && (num_cols > 0)) ||
+                  !((num_rows == 0) && (num_cols == 0))),
+                  wxT("wxGridCellAttr::SetSize only takes two positive values or negative/zero values"));
 
 
-            // can't do anything more in the base class version, the other
-            // attributes may only be used by the derived classes
-        }
+    m_sizeRows = num_rows;
+    m_sizeCols = num_cols;
+}
+
+const wxColour& wxGridCellAttr::GetTextColour() const
+{
+    if (HasTextColour())
+    {
+        return m_colText;
+    }
+    else if (m_defGridAttr && m_defGridAttr != this)
+    {
+        return m_defGridAttr->GetTextColour();
     }
     else
     {
     }
     else
     {
-        // restore the standard colours fonts
-        if ( m_colFgOld.Ok() )
-        {
-            m_control->SetForegroundColour(m_colFgOld);
-            m_colFgOld = wxNullColour;
-        }
-
-        if ( m_colBgOld.Ok() )
-        {
-            m_control->SetBackgroundColour(m_colBgOld);
-            m_colBgOld = wxNullColour;
-        }
-
-        if ( m_fontOld.Ok() )
-        {
-            m_control->SetFont(m_fontOld);
-            m_fontOld = wxNullFont;
-        }
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+        return wxNullColour;
     }
 }
 
     }
 }
 
-void wxGridCellEditor::SetSize(const wxRect& rect)
+const wxColour& wxGridCellAttr::GetBackgroundColour() const
 {
 {
-    wxASSERT_MSG(m_control,
-                 wxT("The wxGridCellEditor must be Created first!"));
-    m_control->SetSize(rect, wxSIZE_ALLOW_MINUS_ONE);
+    if (HasBackgroundColour())
+    {
+        return m_colBack;
+    }
+    else if (m_defGridAttr && m_defGridAttr != this)
+    {
+        return m_defGridAttr->GetBackgroundColour();
+    }
+    else
+    {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+        return wxNullColour;
+    }
 }
 
 }
 
-void wxGridCellEditor::HandleReturn(wxKeyEvent& event)
+const wxFont& wxGridCellAttr::GetFont() const
 {
 {
-    event.Skip();
+    if (HasFont())
+    {
+        return m_font;
+    }
+    else if (m_defGridAttr && m_defGridAttr != this)
+    {
+        return m_defGridAttr->GetFont();
+    }
+    else
+    {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+        return wxNullFont;
+    }
 }
 
 }
 
-
-void wxGridCellEditor::StartingKey(wxKeyEvent& event)
+void wxGridCellAttr::GetAlignment(int *hAlign, int *vAlign) const
 {
 {
-    event.Skip();
+    if (HasAlignment())
+    {
+        if ( hAlign )
+            *hAlign = m_hAlign;
+        if ( vAlign )
+            *vAlign = m_vAlign;
+    }
+    else if (m_defGridAttr && m_defGridAttr != this)
+    {
+        m_defGridAttr->GetAlignment(hAlign, vAlign);
+    }
+    else
+    {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+    }
 }
 
 }
 
-void wxGridCellEditor::StartingClick()
+void wxGridCellAttr::GetNonDefaultAlignment(int *hAlign, int *vAlign) const
 {
 {
-}
-
-// ----------------------------------------------------------------------------
-// wxGridCellTextEditor
-// ----------------------------------------------------------------------------
+    if ( hAlign && m_hAlign != wxALIGN_INVALID )
+        *hAlign = m_hAlign;
 
 
-wxGridCellTextEditor::wxGridCellTextEditor()
-{
-    m_maxChars = 0;
+    if ( vAlign && m_vAlign != wxALIGN_INVALID )
+        *vAlign = m_vAlign;
 }
 
 }
 
-void wxGridCellTextEditor::Create(wxWindow* parent,
-                                  wxWindowID id,
-                                  wxEvtHandler* evtHandler)
+void wxGridCellAttr::GetSize( int *num_rows, int *num_cols ) const
 {
 {
-    m_control = new wxTextCtrl(parent, id, wxEmptyString,
-                               wxDefaultPosition, wxDefaultSize
-#if defined(__WXMSW__)
-                               , wxTE_MULTILINE | wxTE_NO_VSCROLL // necessary ???
-#endif
-                              );
-
-    // TODO: use m_maxChars
-
-    wxGridCellEditor::Create(parent, id, evtHandler);
+    if ( num_rows )
+        *num_rows = m_sizeRows;
+    if ( num_cols )
+        *num_cols = m_sizeCols;
 }
 
 }
 
-void wxGridCellTextEditor::PaintBackground(const wxRect& WXUNUSED(rectCell),
-                                           wxGridCellAttr * WXUNUSED(attr))
-{
-    // as we fill the entire client area, don't do anything here to minimize
-    // flicker
-}
+// GetRenderer and GetEditor use a slightly different decision path about
+// which attribute to use.  If a non-default attr object has one then it is
+// used, otherwise the default editor or renderer is fetched from the grid and
+// used.  It should be the default for the data type of the cell.  If it is
+// NULL (because the table has a type that the grid does not have in its
+// registry), then the grid's default editor or renderer is used.
 
 
-void wxGridCellTextEditor::SetSize(const wxRect& rectOrig)
+wxGridCellRenderer* wxGridCellAttr::GetRenderer(const wxGrid* grid, int row, int col) const
 {
 {
-    wxRect rect(rectOrig);
+    wxGridCellRenderer *renderer = NULL;
 
 
-    // Make the edit control large enough to allow for internal
-    // margins
-    //
-    // TODO: remove this if the text ctrl sizing is improved esp. for
-    // unix
-    //
-#if defined(__WXGTK__)
-    if (rect.x != 0)
+    if ( m_renderer && this != m_defGridAttr )
     {
     {
-        rect.x += 1;
-        rect.y += 1;
-        rect.width -= 1;
-        rect.height -= 1;
+        // use the cells renderer if it has one
+        renderer = m_renderer;
+        renderer->IncRef();
     }
     }
-#else // !GTK
-    int extra_x = ( rect.x > 2 )? 2 : 1;
-    int extra_y = ( rect.y > 2 )? 2 : 1;
-#if defined(__WXMOTIF__)
-    extra_x *= 2;
-    extra_y *= 2;
-#endif
-    rect.SetLeft( wxMax(0, rect.x - extra_x) );
-    rect.SetTop( wxMax(0, rect.y - extra_y) );
-    rect.SetRight( rect.GetRight() + 2*extra_x );
-    rect.SetBottom( rect.GetBottom() + 2*extra_y );
-#endif // GTK/!GTK
-
-    wxGridCellEditor::SetSize(rect);
-}
+    else // no non-default cell renderer
+    {
+        // get default renderer for the data type
+        if ( grid )
+        {
+            // GetDefaultRendererForCell() will do IncRef() for us
+            renderer = grid->GetDefaultRendererForCell(row, col);
+        }
 
 
-void wxGridCellTextEditor::BeginEdit(int row, int col, wxGrid* grid)
-{
-    wxASSERT_MSG(m_control,
-                 wxT("The wxGridCellEditor must be Created first!"));
+        if ( renderer == NULL )
+        {
+            if ( (m_defGridAttr != NULL) && (m_defGridAttr != this) )
+            {
+                // if we still don't have one then use the grid default
+                // (no need for IncRef() here neither)
+                renderer = m_defGridAttr->GetRenderer(NULL, 0, 0);
+            }
+            else // default grid attr
+            {
+                // use m_renderer which we had decided not to use initially
+                renderer = m_renderer;
+                if ( renderer )
+                    renderer->IncRef();
+            }
+        }
+    }
 
 
-    m_startValue = grid->GetTable()->GetValue(row, col);
+    // we're supposed to always find something
+    wxASSERT_MSG(renderer, wxT("Missing default cell renderer"));
 
 
-    DoBeginEdit(m_startValue);
+    return renderer;
 }
 
 }
 
-void wxGridCellTextEditor::DoBeginEdit(const wxString& startValue)
+// same as above, except for s/renderer/editor/g
+wxGridCellEditor* wxGridCellAttr::GetEditor(const wxGrid* grid, int row, int col) const
 {
 {
-    Text()->SetValue(startValue);
-    Text()->SetInsertionPointEnd();
-    Text()->SetFocus();
-}
+    wxGridCellEditor *editor = NULL;
 
 
-bool wxGridCellTextEditor::EndEdit(int row, int col,
-                                   wxGrid* grid)
-{
-    wxASSERT_MSG(m_control,
-                 wxT("The wxGridCellEditor must be Created first!"));
-
-    bool changed = FALSE;
-    wxString value = Text()->GetValue();
-    if (value != m_startValue)
-        changed = TRUE;
-
-    if (changed)
-        grid->GetTable()->SetValue(row, col, value);
-
-    m_startValue = wxEmptyString;
-    Text()->SetValue(m_startValue);
-
-    return changed;
-}
-
-
-void wxGridCellTextEditor::Reset()
-{
-    wxASSERT_MSG(m_control,
-                 wxT("The wxGridCellEditor must be Created first!"));
-
-    DoReset(m_startValue);
-}
-
-void wxGridCellTextEditor::DoReset(const wxString& startValue)
-{
-    Text()->SetValue(startValue);
-    Text()->SetInsertionPointEnd();
-}
-
-void wxGridCellTextEditor::StartingKey(wxKeyEvent& event)
-{
-    if ( !event.AltDown() && !event.MetaDown() && !event.ControlDown() )
+    if ( m_editor && this != m_defGridAttr )
     {
     {
-        // insert the key in the control
-        long keycode = event.KeyCode();
-        if ( isprint(keycode) )
+        // use the cells editor if it has one
+        editor = m_editor;
+        editor->IncRef();
+    }
+    else // no non default cell editor
+    {
+        // get default editor for the data type
+        if ( grid )
+        {
+            // GetDefaultEditorForCell() will do IncRef() for us
+            editor = grid->GetDefaultEditorForCell(row, col);
+        }
+
+        if ( editor == NULL )
         {
         {
-            // FIXME this is not going to work for non letters...
-            if ( !event.ShiftDown() )
+            if ( (m_defGridAttr != NULL) && (m_defGridAttr != this) )
             {
             {
-                keycode = tolower(keycode);
+                // if we still don't have one then use the grid default
+                // (no need for IncRef() here neither)
+                editor = m_defGridAttr->GetEditor(NULL, 0, 0);
+            }
+            else // default grid attr
+            {
+                // use m_editor which we had decided not to use initially
+                editor = m_editor;
+                if ( editor )
+                    editor->IncRef();
             }
             }
-
-            Text()->AppendText((wxChar)keycode);
-
-            return;
         }
         }
-
     }
 
     }
 
-    event.Skip();
-}
+    // we're supposed to always find something
+    wxASSERT_MSG(editor, wxT("Missing default cell editor"));
 
 
-void wxGridCellTextEditor::HandleReturn(wxKeyEvent& event)
-{
-#if defined(__WXMOTIF__) || defined(__WXGTK__)
-    // wxMotif needs a little extra help...
-    int pos = Text()->GetInsertionPoint();
-    wxString s( Text()->GetValue() );
-    s = s.Left(pos) + "\n" + s.Mid(pos);
-    Text()->SetValue(s);
-    Text()->SetInsertionPoint( pos );
-#else
-    // the other ports can handle a Return key press
-    //
-    event.Skip();
-#endif
+    return editor;
 }
 
 }
 
-void wxGridCellTextEditor::SetParameters(const wxString& params)
+// ----------------------------------------------------------------------------
+// wxGridCellAttrData
+// ----------------------------------------------------------------------------
+
+void wxGridCellAttrData::SetAttr(wxGridCellAttr *attr, int row, int col)
 {
 {
-    if ( !params )
+    // Note: contrary to wxGridRowOrColAttrData::SetAttr, we must not
+    //       touch attribute's reference counting explicitly, since this
+    //       is managed by class wxGridCellWithAttr
+    int n = FindIndex(row, col);
+    if ( n == wxNOT_FOUND )
     {
     {
-        // reset to default
-        m_maxChars = 0;
+        if ( attr )
+        {
+            // add the attribute
+            m_attrs.Add(new wxGridCellWithAttr(row, col, attr));
+        }
+        //else: nothing to do
     }
     }
-    else
+    else // we already have an attribute for this cell
     {
     {
-        long tmp;
-        if ( !params.ToLong(&tmp) )
+        if ( attr )
         {
         {
-            wxLogDebug(_T("Invalid wxGridCellTextEditor parameter string "
-                          "'%s' ignored"), params.c_str());
+            // change the attribute
+            m_attrs[(size_t)n].ChangeAttr(attr);
         }
         else
         {
         }
         else
         {
-            m_maxChars = (size_t)tmp;
+            // remove this attribute
+            m_attrs.RemoveAt((size_t)n);
         }
     }
 }
 
         }
     }
 }
 
-// ----------------------------------------------------------------------------
-// wxGridCellNumberEditor
-// ----------------------------------------------------------------------------
-
-wxGridCellNumberEditor::wxGridCellNumberEditor(int min, int max)
+wxGridCellAttr *wxGridCellAttrData::GetAttr(int row, int col) const
 {
 {
-    m_min = min;
-    m_max = max;
-}
+    wxGridCellAttr *attr = NULL;
 
 
-void wxGridCellNumberEditor::Create(wxWindow* parent,
-                                    wxWindowID id,
-                                    wxEvtHandler* evtHandler)
-{
-    if ( HasRange() )
+    int n = FindIndex(row, col);
+    if ( n != wxNOT_FOUND )
     {
     {
-        // create a spin ctrl
-        m_control = new wxSpinCtrl(parent, -1, wxEmptyString,
-                                   wxDefaultPosition, wxDefaultSize,
-                                   wxSP_ARROW_KEYS,
-                                   m_min, m_max);
-
-        wxGridCellEditor::Create(parent, id, evtHandler);
+        attr = m_attrs[(size_t)n].attr;
+        attr->IncRef();
     }
     }
-    else
-    {
-        // just a text control
-        wxGridCellTextEditor::Create(parent, id, evtHandler);
 
 
-#if wxUSE_VALIDATORS
-        Text()->SetValidator(wxTextValidator(wxFILTER_NUMERIC));
-#endif // wxUSE_VALIDATORS
-    }
+    return attr;
 }
 
 }
 
-void wxGridCellNumberEditor::BeginEdit(int row, int col, wxGrid* grid)
+void wxGridCellAttrData::UpdateAttrRows( size_t pos, int numRows )
 {
 {
-    // first get the value
-    wxGridTableBase *table = grid->GetTable();
-    if ( table->CanGetValueAs(row, col, wxGRID_VALUE_NUMBER) )
-    {
-        m_valueOld = table->GetValueAsLong(row, col);
-    }
-    else
+    size_t count = m_attrs.GetCount();
+    for ( size_t n = 0; n < count; n++ )
     {
     {
-        wxString sValue = table->GetValue(row, col);
-        if (! sValue.ToLong(&m_valueOld))
+        wxGridCellCoords& coords = m_attrs[n].coords;
+        wxCoord row = coords.GetRow();
+        if ((size_t)row >= pos)
         {
         {
-            wxFAIL_MSG( _T("this cell doesn't have numeric value") );
-            return;
+            if (numRows > 0)
+            {
+                // If rows inserted, include row counter where necessary
+                coords.SetRow(row + numRows);
+            }
+            else if (numRows < 0)
+            {
+                // If rows deleted ...
+                if ((size_t)row >= pos - numRows)
+                {
+                    // ...either decrement row counter (if row still exists)...
+                    coords.SetRow(row + numRows);
+                }
+                else
+                {
+                    // ...or remove the attribute
+                    m_attrs.RemoveAt(n);
+                    n--;
+                    count--;
+                }
+            }
         }
     }
         }
     }
-
-    if ( HasRange() )
-    {
-        Spin()->SetValue(m_valueOld);
-    }
-    else
-    {
-        DoBeginEdit(GetString());
-    }
 }
 
 }
 
-bool wxGridCellNumberEditor::EndEdit(int row, int col,
-                                     wxGrid* grid)
+void wxGridCellAttrData::UpdateAttrCols( size_t pos, int numCols )
 {
 {
-    bool changed;
-    long value;
-
-    if ( HasRange() )
-    {
-        value = Spin()->GetValue();
-        changed = value != m_valueOld;
-    }
-    else
+    size_t count = m_attrs.GetCount();
+    for ( size_t n = 0; n < count; n++ )
     {
     {
-        changed = Text()->GetValue().ToLong(&value) && (value != m_valueOld);
+        wxGridCellCoords& coords = m_attrs[n].coords;
+        wxCoord col = coords.GetCol();
+        if ( (size_t)col >= pos )
+        {
+            if ( numCols > 0 )
+            {
+                // If rows inserted, include row counter where necessary
+                coords.SetCol(col + numCols);
+            }
+            else if (numCols < 0)
+            {
+                // If rows deleted ...
+                if ((size_t)col >= pos - numCols)
+                {
+                    // ...either decrement row counter (if row still exists)...
+                    coords.SetCol(col + numCols);
+                }
+                else
+                {
+                    // ...or remove the attribute
+                    m_attrs.RemoveAt(n);
+                    n--;
+                    count--;
+                }
+            }
+        }
     }
     }
+}
 
 
-    if ( changed )
+int wxGridCellAttrData::FindIndex(int row, int col) const
+{
+    size_t count = m_attrs.GetCount();
+    for ( size_t n = 0; n < count; n++ )
     {
     {
-        if (grid->GetTable()->CanSetValueAs(row, col, wxGRID_VALUE_NUMBER))
-            grid->GetTable()->SetValueAsLong(row, col, value);
-        else
-            grid->GetTable()->SetValue(row, col, wxString::Format("%ld", value));
+        const wxGridCellCoords& coords = m_attrs[n].coords;
+        if ( (coords.GetRow() == row) && (coords.GetCol() == col) )
+        {
+            return n;
+        }
     }
 
     }
 
-    return changed;
+    return wxNOT_FOUND;
 }
 
 }
 
-void wxGridCellNumberEditor::Reset()
+// ----------------------------------------------------------------------------
+// wxGridRowOrColAttrData
+// ----------------------------------------------------------------------------
+
+wxGridRowOrColAttrData::~wxGridRowOrColAttrData()
 {
 {
-    if ( HasRange() )
+    size_t count = m_attrs.GetCount();
+    for ( size_t n = 0; n < count; n++ )
     {
     {
-        Spin()->SetValue(m_valueOld);
+        m_attrs[n]->DecRef();
     }
     }
-    else
+}
+
+wxGridCellAttr *wxGridRowOrColAttrData::GetAttr(int rowOrCol) const
+{
+    wxGridCellAttr *attr = NULL;
+
+    int n = m_rowsOrCols.Index(rowOrCol);
+    if ( n != wxNOT_FOUND )
     {
     {
-        DoReset(GetString());
+        attr = m_attrs[(size_t)n];
+        attr->IncRef();
     }
     }
+
+    return attr;
 }
 
 }
 
-void wxGridCellNumberEditor::StartingKey(wxKeyEvent& event)
+void wxGridRowOrColAttrData::SetAttr(wxGridCellAttr *attr, int rowOrCol)
 {
 {
-    if ( !HasRange() )
+    int i = m_rowsOrCols.Index(rowOrCol);
+    if ( i == wxNOT_FOUND )
     {
     {
-        long keycode = event.KeyCode();
-        if ( isdigit(keycode) || keycode == '+' || keycode == '-' )
+        if ( attr )
         {
         {
-            wxGridCellTextEditor::StartingKey(event);
-
-            // skip Skip() below
-            return;
+            // store the new attribute, taking its ownership
+            m_rowsOrCols.Add(rowOrCol);
+            m_attrs.Add(attr);
         }
         }
+        // nothing to remove
     }
     }
+    else // we have an attribute for this row or column
+    {
+        size_t n = (size_t)i;
+
+        // notice that this code works correctly even when the old attribute is
+        // the same as the new one: as we own of it, we must call DecRef() on
+        // it in any case and this won't result in destruction of the new
+        // attribute if it's the same as old one because it must have ref count
+        // of at least 2 to be passed to us while we keep a reference to it too
+        m_attrs[n]->DecRef();
 
 
-    event.Skip();
+        if ( attr )
+        {
+            // replace the attribute with the new one
+            m_attrs[n] = attr;
+        }
+        else // remove the attribute
+        {
+            m_rowsOrCols.RemoveAt(n);
+            m_attrs.RemoveAt(n);
+        }
+    }
 }
 
 }
 
-void wxGridCellNumberEditor::SetParameters(const wxString& params)
+void wxGridRowOrColAttrData::UpdateAttrRowsOrCols( size_t pos, int numRowsOrCols )
 {
 {
-    if ( !params )
-    {
-        // reset to default
-        m_min =
-        m_max = -1;
-    }
-    else
+    size_t count = m_attrs.GetCount();
+    for ( size_t n = 0; n < count; n++ )
     {
     {
-        long tmp;
-        if ( params.BeforeFirst(_T(',')).ToLong(&tmp) )
+        int & rowOrCol = m_rowsOrCols[n];
+        if ( (size_t)rowOrCol >= pos )
         {
         {
-            m_min = (int)tmp;
-
-            if ( params.AfterFirst(_T(',')).ToLong(&tmp) )
+            if ( numRowsOrCols > 0 )
             {
             {
-                m_max = (int)tmp;
-
-                // skip the error message below
-                return;
+                // If rows inserted, include row counter where necessary
+                rowOrCol += numRowsOrCols;
+            }
+            else if ( numRowsOrCols < 0)
+            {
+                // If rows deleted, either decrement row counter (if row still exists)
+                if ((size_t)rowOrCol >= pos - numRowsOrCols)
+                    rowOrCol += numRowsOrCols;
+                else
+                {
+                    m_rowsOrCols.RemoveAt(n);
+                    m_attrs[n]->DecRef();
+                    m_attrs.RemoveAt(n);
+                    n--;
+                    count--;
+                }
             }
         }
             }
         }
-
-        wxLogDebug(_T("Invalid wxGridCellNumberEditor parameter string "
-                      "'%s' ignored"), params.c_str());
     }
 }
 
 // ----------------------------------------------------------------------------
     }
 }
 
 // ----------------------------------------------------------------------------
-// wxGridCellFloatEditor
+// wxGridCellAttrProvider
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 
-void wxGridCellFloatEditor::Create(wxWindow* parent,
-                                   wxWindowID id,
-                                   wxEvtHandler* evtHandler)
+wxGridCellAttrProvider::wxGridCellAttrProvider()
 {
 {
-    wxGridCellTextEditor::Create(parent, id, evtHandler);
-
-#if wxUSE_VALIDATORS
-    Text()->SetValidator(wxTextValidator(wxFILTER_NUMERIC));
-#endif // wxUSE_VALIDATORS
+    m_data = NULL;
 }
 
 }
 
-void wxGridCellFloatEditor::BeginEdit(int row, int col, wxGrid* grid)
+wxGridCellAttrProvider::~wxGridCellAttrProvider()
 {
 {
-    // first get the value
-    wxGridTableBase *table = grid->GetTable();
-    if ( table->CanGetValueAs(row, col, wxGRID_VALUE_FLOAT) )
-    {
-        m_valueOld = table->GetValueAsDouble(row, col);
-    }
-    else
-    {
-        wxString sValue = table->GetValue(row, col);
-        if (! sValue.ToDouble(&m_valueOld))
-        {
-            wxFAIL_MSG( _T("this cell doesn't have float value") );
-            return;
-        }
-    }
+    delete m_data;
+}
 
 
-    DoBeginEdit(GetString());
+void wxGridCellAttrProvider::InitData()
+{
+    m_data = new wxGridCellAttrProviderData;
 }
 
 }
 
-bool wxGridCellFloatEditor::EndEdit(int row, int col,
-                                     wxGrid* grid)
+wxGridCellAttr *wxGridCellAttrProvider::GetAttr(int row, int col,
+                                                wxGridCellAttr::wxAttrKind  kind ) const
 {
 {
-    double value;
-    if ( Text()->GetValue().ToDouble(&value) && (value != m_valueOld) )
+    wxGridCellAttr *attr = NULL;
+    if ( m_data )
     {
     {
-        if (grid->GetTable()->CanSetValueAs(row, col, wxGRID_VALUE_FLOAT))
-            grid->GetTable()->SetValueAsDouble(row, col, value);
-        else
-            grid->GetTable()->SetValue(row, col, wxString::Format("%f", value));
+        switch (kind)
+        {
+            case (wxGridCellAttr::Any):
+                // Get cached merge attributes.
+                // Currently not used as no cache implemented as not mutable
+                // attr = m_data->m_mergeAttr.GetAttr(row, col);
+                if (!attr)
+                {
+                    // Basically implement old version.
+                    // Also check merge cache, so we don't have to re-merge every time..
+                    wxGridCellAttr *attrcell = m_data->m_cellAttrs.GetAttr(row, col);
+                    wxGridCellAttr *attrrow = m_data->m_rowAttrs.GetAttr(row);
+                    wxGridCellAttr *attrcol = m_data->m_colAttrs.GetAttr(col);
 
 
-        return TRUE;
-    }
-    else
-    {
-        return FALSE;
-    }
-}
+                    if ((attrcell != attrrow) && (attrrow != attrcol) && (attrcell != attrcol))
+                    {
+                        // Two or more are non NULL
+                        attr = new wxGridCellAttr;
+                        attr->SetKind(wxGridCellAttr::Merged);
+
+                        // Order is important..
+                        if (attrcell)
+                        {
+                            attr->MergeWith(attrcell);
+                            attrcell->DecRef();
+                        }
+                        if (attrcol)
+                        {
+                            attr->MergeWith(attrcol);
+                            attrcol->DecRef();
+                        }
+                        if (attrrow)
+                        {
+                            attr->MergeWith(attrrow);
+                            attrrow->DecRef();
+                        }
+
+                        // store merge attr if cache implemented
+                        //attr->IncRef();
+                        //m_data->m_mergeAttr.SetAttr(attr, row, col);
+                    }
+                    else
+                    {
+                        // one or none is non null return it or null.
+                        if (attrrow)
+                            attr = attrrow;
+                        if (attrcol)
+                        {
+                            if (attr)
+                                attr->DecRef();
+                            attr = attrcol;
+                        }
+                        if (attrcell)
+                        {
+                            if (attr)
+                                attr->DecRef();
+                            attr = attrcell;
+                        }
+                    }
+                }
+                break;
 
 
-void wxGridCellFloatEditor::Reset()
-{
-    DoReset(GetString());
-}
+            case (wxGridCellAttr::Cell):
+                attr = m_data->m_cellAttrs.GetAttr(row, col);
+                break;
 
 
-void wxGridCellFloatEditor::StartingKey(wxKeyEvent& event)
-{
-    long keycode = event.KeyCode();
-    if ( isdigit(keycode) ||
-         keycode == '+' || keycode == '-' || keycode == '.' )
-    {
-        wxGridCellTextEditor::StartingKey(event);
+            case (wxGridCellAttr::Col):
+                attr = m_data->m_colAttrs.GetAttr(col);
+                break;
 
 
-        // skip Skip() below
-        return;
+            case (wxGridCellAttr::Row):
+                attr = m_data->m_rowAttrs.GetAttr(row);
+                break;
+
+            default:
+                // unused as yet...
+                // (wxGridCellAttr::Default):
+                // (wxGridCellAttr::Merged):
+                break;
+        }
     }
 
     }
 
-    event.Skip();
+    return attr;
 }
 
 }
 
-// ----------------------------------------------------------------------------
-// wxGridCellBoolEditor
-// ----------------------------------------------------------------------------
-
-void wxGridCellBoolEditor::Create(wxWindow* parent,
-                                  wxWindowID id,
-                                  wxEvtHandler* evtHandler)
+void wxGridCellAttrProvider::SetAttr(wxGridCellAttr *attr,
+                                     int row, int col)
 {
 {
-    m_control = new wxCheckBox(parent, id, wxEmptyString,
-                               wxDefaultPosition, wxDefaultSize,
-                               wxNO_BORDER);
+    if ( !m_data )
+        InitData();
 
 
-    wxGridCellEditor::Create(parent, id, evtHandler);
+    m_data->m_cellAttrs.SetAttr(attr, row, col);
 }
 
 }
 
-void wxGridCellBoolEditor::SetSize(const wxRect& r)
+void wxGridCellAttrProvider::SetRowAttr(wxGridCellAttr *attr, int row)
 {
 {
-    bool resize = FALSE;
-    wxSize size = m_control->GetSize();
-    wxCoord minSize = wxMin(r.width, r.height);
-
-    // check if the checkbox is not too big/small for this cell
-    wxSize sizeBest = m_control->GetBestSize();
-    if ( !(size == sizeBest) )
-    {
-        // reset to default size if it had been made smaller
-        size = sizeBest;
-
-        resize = TRUE;
-    }
-
-    if ( size.x >= minSize || size.y >= minSize )
-    {
-        // leave 1 pixel margin
-        size.x = size.y = minSize - 2;
-
-        resize = TRUE;
-    }
-
-    if ( resize )
-    {
-        m_control->SetSize(size);
-    }
-
-    // position it in the centre of the rectangle (TODO: support alignment?)
-
-#if defined(__WXGTK__) || defined (__WXMOTIF__)
-    // the checkbox without label still has some space to the right in wxGTK,
-    // so shift it to the right
-    size.x -= 8;
-#elif defined(__WXMSW__)
-    // here too, but in other way
-    size.x += 1;
-    size.y -= 2;
-#endif
+    if ( !m_data )
+        InitData();
 
 
-    m_control->Move(r.x + r.width/2 - size.x/2, r.y + r.height/2 - size.y/2);
+    m_data->m_rowAttrs.SetAttr(attr, row);
 }
 
 }
 
-void wxGridCellBoolEditor::Show(bool show, wxGridCellAttr *attr)
+void wxGridCellAttrProvider::SetColAttr(wxGridCellAttr *attr, int col)
 {
 {
-    m_control->Show(show);
+    if ( !m_data )
+        InitData();
 
 
-    if ( show )
-    {
-        wxColour colBg = attr ? attr->GetBackgroundColour() : *wxLIGHT_GREY;
-        CBox()->SetBackgroundColour(colBg);
-    }
+    m_data->m_colAttrs.SetAttr(attr, col);
 }
 
 }
 
-void wxGridCellBoolEditor::BeginEdit(int row, int col, wxGrid* grid)
+void wxGridCellAttrProvider::UpdateAttrRows( size_t pos, int numRows )
 {
 {
-    wxASSERT_MSG(m_control,
-                 wxT("The wxGridCellEditor must be Created first!"));
+    if ( m_data )
+    {
+        m_data->m_cellAttrs.UpdateAttrRows( pos, numRows );
 
 
-    if (grid->GetTable()->CanGetValueAs(row, col, wxGRID_VALUE_BOOL))
-        m_startValue = grid->GetTable()->GetValueAsBool(row, col);
-    else
-        m_startValue = !!grid->GetTable()->GetValue(row, col);
-    CBox()->SetValue(m_startValue);
-    CBox()->SetFocus();
+        m_data->m_rowAttrs.UpdateAttrRowsOrCols( pos, numRows );
+    }
 }
 
 }
 
-bool wxGridCellBoolEditor::EndEdit(int row, int col,
-                                   wxGrid* grid)
+void wxGridCellAttrProvider::UpdateAttrCols( size_t pos, int numCols )
 {
 {
-    wxASSERT_MSG(m_control,
-                 wxT("The wxGridCellEditor must be Created first!"));
-
-    bool changed = FALSE;
-    bool value = CBox()->GetValue();
-    if ( value != m_startValue )
-        changed = TRUE;
-
-    if ( changed )
+    if ( m_data )
     {
     {
-        if (grid->GetTable()->CanGetValueAs(row, col, wxGRID_VALUE_BOOL))
-            grid->GetTable()->SetValueAsBool(row, col, value);
-        else
-            grid->GetTable()->SetValue(row, col, value ? _T("1") : wxEmptyString);
-    }
+        m_data->m_cellAttrs.UpdateAttrCols( pos, numCols );
 
 
-    return changed;
+        m_data->m_colAttrs.UpdateAttrRowsOrCols( pos, numCols );
+    }
 }
 
 }
 
-void wxGridCellBoolEditor::Reset()
+const wxGridColumnHeaderRenderer&
+wxGridCellAttrProvider::GetColumnHeaderRenderer(int WXUNUSED(col))
 {
 {
-    wxASSERT_MSG(m_control,
-                 wxT("The wxGridCellEditor must be Created first!"));
+    return gs_defaultHeaderRenderers.colRenderer;
+}
 
 
-    CBox()->SetValue(m_startValue);
+const wxGridRowHeaderRenderer&
+wxGridCellAttrProvider::GetRowHeaderRenderer(int WXUNUSED(row))
+{
+    return gs_defaultHeaderRenderers.rowRenderer;
 }
 
 }
 
-void wxGridCellBoolEditor::StartingClick()
+const wxGridCornerHeaderRenderer& wxGridCellAttrProvider::GetCornerRenderer()
 {
 {
-    CBox()->SetValue(!CBox()->GetValue());
+    return gs_defaultHeaderRenderers.cornerRenderer;
 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------
-// wxGridCellChoiceEditor
+// wxGridTableBase
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 
-wxGridCellChoiceEditor::wxGridCellChoiceEditor(size_t count,
-                                               const wxChar* choices[],
-                                               bool allowOthers)
-                      : m_allowOthers(allowOthers)
+IMPLEMENT_ABSTRACT_CLASS( wxGridTableBase, wxObject )
+
+wxGridTableBase::wxGridTableBase()
 {
 {
-    if ( count )
-    {
-        m_choices.Alloc(count);
-        for ( size_t n = 0; n < count; n++ )
-        {
-            m_choices.Add(choices[n]);
-        }
-    }
+    m_view = NULL;
+    m_attrProvider = NULL;
 }
 
 }
 
-wxGridCellEditor *wxGridCellChoiceEditor::Clone() const
+wxGridTableBase::~wxGridTableBase()
 {
 {
-    wxGridCellChoiceEditor *editor = new wxGridCellChoiceEditor;
-    editor->m_allowOthers = m_allowOthers;
-    editor->m_choices = m_choices;
+    delete m_attrProvider;
+}
 
 
-    return editor;
+void wxGridTableBase::SetAttrProvider(wxGridCellAttrProvider *attrProvider)
+{
+    delete m_attrProvider;
+    m_attrProvider = attrProvider;
 }
 
 }
 
-void wxGridCellChoiceEditor::Create(wxWindow* parent,
-                                    wxWindowID id,
-                                    wxEvtHandler* evtHandler)
+bool wxGridTableBase::CanHaveAttributes()
 {
 {
-    size_t count = m_choices.GetCount();
-    wxString *choices = new wxString[count];
-    for ( size_t n = 0; n < count; n++ )
+    if ( ! GetAttrProvider() )
     {
     {
-        choices[n] = m_choices[n];
+        // use the default attr provider by default
+        SetAttrProvider(new wxGridCellAttrProvider);
     }
 
     }
 
-    m_control = new wxComboBox(parent, id, wxEmptyString,
-                               wxDefaultPosition, wxDefaultSize,
-                               count, choices,
-                               m_allowOthers ? 0 : wxCB_READONLY);
-
-    delete [] choices;
-
-    wxGridCellEditor::Create(parent, id, evtHandler);
+    return true;
 }
 
 }
 
-void wxGridCellChoiceEditor::PaintBackground(const wxRect& rectCell,
-                                             wxGridCellAttr * attr)
+wxGridCellAttr *wxGridTableBase::GetAttr(int row, int col, wxGridCellAttr::wxAttrKind  kind)
 {
 {
-    // as we fill the entire client area, don't do anything here to minimize
-    // flicker
-
-    // TODO: It doesn't actually fill the client area since the height of a
-    // combo always defaults to the standard...  Until someone has time to
-    // figure out the right rectangle to paint, just do it the normal way...
-    wxGridCellEditor::PaintBackground(rectCell, attr);
+    if ( m_attrProvider )
+        return m_attrProvider->GetAttr(row, col, kind);
+    else
+        return NULL;
 }
 
 }
 
-void wxGridCellChoiceEditor::BeginEdit(int row, int col, wxGrid* grid)
+void wxGridTableBase::SetAttr(wxGridCellAttr* attr, int row, int col)
 {
 {
-    wxASSERT_MSG(m_control,
-                 wxT("The wxGridCellEditor must be Created first!"));
-
-    m_startValue = grid->GetTable()->GetValue(row, col);
-
-    Combo()->SetValue(m_startValue);
-    size_t count = m_choices.GetCount();
-    for (size_t i=0; i<count; i++)
+    if ( m_attrProvider )
     {
     {
-        if (m_startValue == m_choices[i])
-        {
-            Combo()->SetSelection(i);
-            break;
-        }
+        if ( attr )
+            attr->SetKind(wxGridCellAttr::Cell);
+        m_attrProvider->SetAttr(attr, row, col);
+    }
+    else
+    {
+        // as we take ownership of the pointer and don't store it, we must
+        // free it now
+        wxSafeDecRef(attr);
     }
     }
-    Combo()->SetInsertionPointEnd();
-    Combo()->SetFocus();
-}
-
-bool wxGridCellChoiceEditor::EndEdit(int row, int col,
-                                     wxGrid* grid)
-{
-    wxString value = Combo()->GetValue();
-    bool changed = value != m_startValue;
-
-    if ( changed )
-        grid->GetTable()->SetValue(row, col, value);
-
-    m_startValue = wxEmptyString;
-    Combo()->SetValue(m_startValue);
-
-    return changed;
 }
 
 }
 
-void wxGridCellChoiceEditor::Reset()
+void wxGridTableBase::SetRowAttr(wxGridCellAttr *attr, int row)
 {
 {
-    Combo()->SetValue(m_startValue);
-    Combo()->SetInsertionPointEnd();
+    if ( m_attrProvider )
+    {
+        attr->SetKind(wxGridCellAttr::Row);
+        m_attrProvider->SetRowAttr(attr, row);
+    }
+    else
+    {
+        // as we take ownership of the pointer and don't store it, we must
+        // free it now
+        wxSafeDecRef(attr);
+    }
 }
 
 }
 
-void wxGridCellChoiceEditor::SetParameters(const wxString& params)
+void wxGridTableBase::SetColAttr(wxGridCellAttr *attr, int col)
 {
 {
-    if ( !params )
+    if ( m_attrProvider )
     {
     {
-        // what can we do?
-        return;
+        attr->SetKind(wxGridCellAttr::Col);
+        m_attrProvider->SetColAttr(attr, col);
     }
     }
-
-    m_choices.Empty();
-
-    wxStringTokenizer tk(params, _T(','));
-    while ( tk.HasMoreTokens() )
+    else
     {
     {
-        m_choices.Add(tk.GetNextToken());
+        // as we take ownership of the pointer and don't store it, we must
+        // free it now
+        wxSafeDecRef(attr);
     }
 }
 
     }
 }
 
-// ----------------------------------------------------------------------------
-// wxGridCellEditorEvtHandler
-// ----------------------------------------------------------------------------
-
-void wxGridCellEditorEvtHandler::OnKeyDown(wxKeyEvent& event)
+bool wxGridTableBase::InsertRows( size_t WXUNUSED(pos),
+                                  size_t WXUNUSED(numRows) )
 {
 {
-    switch ( event.KeyCode() )
-    {
-        case WXK_ESCAPE:
-            m_editor->Reset();
-            m_grid->DisableCellEditControl();
-            break;
+    wxFAIL_MSG( wxT("Called grid table class function InsertRows\nbut your derived table class does not override this function") );
 
 
-        case WXK_TAB:
-            event.Skip( m_grid->ProcessEvent( event ) );
-            break;
-
-        case WXK_RETURN:
-            if (!m_grid->ProcessEvent(event))
-                m_editor->HandleReturn(event);
-            break;
+    return false;
+}
 
 
+bool wxGridTableBase::AppendRows( size_t WXUNUSED(numRows) )
+{
+    wxFAIL_MSG( wxT("Called grid table class function AppendRows\nbut your derived table class does not override this function"));
 
 
-        default:
-            event.Skip();
-    }
+    return false;
 }
 
 }
 
-void wxGridCellEditorEvtHandler::OnChar(wxKeyEvent& event)
+bool wxGridTableBase::DeleteRows( size_t WXUNUSED(pos),
+                                  size_t WXUNUSED(numRows) )
 {
 {
-    switch ( event.KeyCode() )
-    {
-        case WXK_ESCAPE:
-        case WXK_TAB:
-        case WXK_RETURN:
-            break;
+    wxFAIL_MSG( wxT("Called grid table class function DeleteRows\nbut your derived table class does not override this function"));
 
 
-        default:
-            event.Skip();
-    }
+    return false;
 }
 
 }
 
-// ----------------------------------------------------------------------------
-// wxGridCellWorker is an (almost) empty common base class for
-// wxGridCellRenderer and wxGridCellEditor managing ref counting
-// ----------------------------------------------------------------------------
-
-void wxGridCellWorker::SetParameters(const wxString& WXUNUSED(params))
+bool wxGridTableBase::InsertCols( size_t WXUNUSED(pos),
+                                  size_t WXUNUSED(numCols) )
 {
 {
-    // nothing to do
+    wxFAIL_MSG( wxT("Called grid table class function InsertCols\nbut your derived table class does not override this function"));
+
+    return false;
 }
 
 }
 
-wxGridCellWorker::~wxGridCellWorker()
+bool wxGridTableBase::AppendCols( size_t WXUNUSED(numCols) )
 {
 {
+    wxFAIL_MSG(wxT("Called grid table class function AppendCols\nbut your derived table class does not override this function"));
+
+    return false;
 }
 
 }
 
-// ============================================================================
-// renderer classes
-// ============================================================================
+bool wxGridTableBase::DeleteCols( size_t WXUNUSED(pos),
+                                  size_t WXUNUSED(numCols) )
+{
+    wxFAIL_MSG( wxT("Called grid table class function DeleteCols\nbut your derived table class does not override this function"));
 
 
-// ----------------------------------------------------------------------------
-// wxGridCellRenderer
-// ----------------------------------------------------------------------------
+    return false;
+}
 
 
-void wxGridCellRenderer::Draw(wxGrid& grid,
-                              wxGridCellAttr& attr,
-                              wxDC& dc,
-                              const wxRect& rect,
-                              int row, int col,
-                              bool isSelected)
+wxString wxGridTableBase::GetRowLabelValue( int row )
 {
 {
-    dc.SetBackgroundMode( wxSOLID );
+    wxString s;
 
 
-    if ( isSelected )
-    {
-        dc.SetBrush( wxBrush(grid.GetSelectionBackground(), wxSOLID) );
-    }
-    else
-    {
-        dc.SetBrush( wxBrush(attr.GetBackgroundColour(), wxSOLID) );
-    }
+    // RD: Starting the rows at zero confuses users,
+    // no matter how much it makes sense to us geeks.
+    s << row + 1;
 
 
-    dc.SetPen( *wxTRANSPARENT_PEN );
-    dc.DrawRectangle(rect);
+    return s;
 }
 
 }
 
-// ----------------------------------------------------------------------------
-// wxGridCellStringRenderer
-// ----------------------------------------------------------------------------
-
-void wxGridCellStringRenderer::SetTextColoursAndFont(wxGrid& grid,
-                                                     wxGridCellAttr& attr,
-                                                     wxDC& dc,
-                                                     bool isSelected)
+wxString wxGridTableBase::GetColLabelValue( int col )
 {
 {
-    dc.SetBackgroundMode( wxTRANSPARENT );
-
-    // TODO some special colours for attr.IsReadOnly() case?
+    // default col labels are:
+    //   cols 0 to 25   : A-Z
+    //   cols 26 to 675 : AA-ZZ
+    //   etc.
 
 
-    if ( isSelected )
+    wxString s;
+    unsigned int i, n;
+    for ( n = 1; ; n++ )
     {
     {
-        dc.SetTextBackground( grid.GetSelectionBackground() );
-        dc.SetTextForeground( grid.GetSelectionForeground() );
+        s += (wxChar) (wxT('A') + (wxChar)(col % 26));
+        col = col / 26 - 1;
+        if ( col < 0 )
+            break;
     }
     }
-    else
+
+    // reverse the string...
+    wxString s2;
+    for ( i = 0; i < n; i++ )
     {
     {
-        dc.SetTextBackground( attr.GetBackgroundColour() );
-        dc.SetTextForeground( attr.GetTextColour() );
+        s2 += s[n - i - 1];
     }
 
     }
 
-    dc.SetFont( attr.GetFont() );
+    return s2;
 }
 
 }
 
-wxSize wxGridCellStringRenderer::DoGetBestSize(wxGridCellAttr& attr,
-                                               wxDC& dc,
-                                               const wxString& text)
+wxString wxGridTableBase::GetTypeName( int WXUNUSED(row), int WXUNUSED(col) )
 {
 {
-    wxCoord x, y;
-    dc.SetFont(attr.GetFont());
-    dc.GetTextExtent(text, &x, &y);
-
-    return wxSize(x, y);
+    return wxGRID_VALUE_STRING;
 }
 
 }
 
-wxSize wxGridCellStringRenderer::GetBestSize(wxGrid& grid,
-                                             wxGridCellAttr& attr,
-                                             wxDC& dc,
-                                             int row, int col)
+bool wxGridTableBase::CanGetValueAs( int WXUNUSED(row), int WXUNUSED(col),
+                                     const wxString& typeName )
 {
 {
-    return DoGetBestSize(attr, dc, grid.GetCellValue(row, col));
+    return typeName == wxGRID_VALUE_STRING;
 }
 
 }
 
-void wxGridCellStringRenderer::Draw(wxGrid& grid,
-                                    wxGridCellAttr& attr,
-                                    wxDC& dc,
-                                    const wxRect& rectCell,
-                                    int row, int col,
-                                    bool isSelected)
+bool wxGridTableBase::CanSetValueAs( int row, int col, const wxString& typeName )
 {
 {
-    wxGridCellRenderer::Draw(grid, attr, dc, rectCell, row, col, isSelected);
-
-    // now we only have to draw the text
-    SetTextColoursAndFont(grid, attr, dc, isSelected);
-
-    int hAlign, vAlign;
-    attr.GetAlignment(&hAlign, &vAlign);
-
-    wxRect rect = rectCell;
-    rect.Inflate(-1);
-
-    grid.DrawTextRectangle(dc, grid.GetCellValue(row, col),
-                           rect, hAlign, vAlign);
+    return CanGetValueAs(row, col, typeName);
 }
 
 }
 
-// ----------------------------------------------------------------------------
-// wxGridCellNumberRenderer
-// ----------------------------------------------------------------------------
-
-wxString wxGridCellNumberRenderer::GetString(wxGrid& grid, int row, int col)
+long wxGridTableBase::GetValueAsLong( int WXUNUSED(row), int WXUNUSED(col) )
 {
 {
-    wxGridTableBase *table = grid.GetTable();
-    wxString text;
-    if ( table->CanGetValueAs(row, col, wxGRID_VALUE_NUMBER) )
-    {
-        text.Printf(_T("%ld"), table->GetValueAsLong(row, col));
-    }
-    else
-    {
-        text = table->GetValue(row, col);
-    }
-
-    return text;
+    return 0;
 }
 
 }
 
-void wxGridCellNumberRenderer::Draw(wxGrid& grid,
-                                    wxGridCellAttr& attr,
-                                    wxDC& dc,
-                                    const wxRect& rectCell,
-                                    int row, int col,
-                                    bool isSelected)
+double wxGridTableBase::GetValueAsDouble( int WXUNUSED(row), int WXUNUSED(col) )
 {
 {
-    wxGridCellRenderer::Draw(grid, attr, dc, rectCell, row, col, isSelected);
-
-    SetTextColoursAndFont(grid, attr, dc, isSelected);
-
-    // draw the text right aligned by default
-    int hAlign, vAlign;
-    attr.GetAlignment(&hAlign, &vAlign);
-    hAlign = wxRIGHT;
-
-    wxRect rect = rectCell;
-    rect.Inflate(-1);
-
-    grid.DrawTextRectangle(dc, GetString(grid, row, col), rect, hAlign, vAlign);
+    return 0.0;
 }
 
 }
 
-wxSize wxGridCellNumberRenderer::GetBestSize(wxGrid& grid,
-                                             wxGridCellAttr& attr,
-                                             wxDC& dc,
-                                             int row, int col)
+bool wxGridTableBase::GetValueAsBool( int WXUNUSED(row), int WXUNUSED(col) )
 {
 {
-    return DoGetBestSize(attr, dc, GetString(grid, row, col));
+    return false;
 }
 
 }
 
-// ----------------------------------------------------------------------------
-// wxGridCellFloatRenderer
-// ----------------------------------------------------------------------------
-
-wxGridCellFloatRenderer::wxGridCellFloatRenderer(int width, int precision)
+void wxGridTableBase::SetValueAsLong( int WXUNUSED(row), int WXUNUSED(col),
+                                      long WXUNUSED(value) )
 {
 {
-    SetWidth(width);
-    SetPrecision(precision);
 }
 
 }
 
-wxGridCellRenderer *wxGridCellFloatRenderer::Clone() const
+void wxGridTableBase::SetValueAsDouble( int WXUNUSED(row), int WXUNUSED(col),
+                                        double WXUNUSED(value) )
 {
 {
-    wxGridCellFloatRenderer *renderer = new wxGridCellFloatRenderer;
-    renderer->m_width = m_width;
-    renderer->m_precision = m_precision;
-    renderer->m_format = m_format;
-
-    return renderer;
 }
 
 }
 
-wxString wxGridCellFloatRenderer::GetString(wxGrid& grid, int row, int col)
+void wxGridTableBase::SetValueAsBool( int WXUNUSED(row), int WXUNUSED(col),
+                                      bool WXUNUSED(value) )
 {
 {
-    wxGridTableBase *table = grid.GetTable();
-
-    bool hasDouble;
-    double val;
-    wxString text;
-    if ( table->CanGetValueAs(row, col, wxGRID_VALUE_FLOAT) )
-    {
-        val = table->GetValueAsDouble(row, col);
-        hasDouble = TRUE;
-    }
-    else
-    {
-        text = table->GetValue(row, col);
-        hasDouble = text.ToDouble(&val);
-    }
-
-    if ( hasDouble )
-    {
-        if ( !m_format )
-        {
-            if ( m_width == -1 )
-            {
-                // default width/precision
-                m_format = _T("%f");
-            }
-            else if ( m_precision == -1 )
-            {
-                // default precision
-                m_format.Printf(_T("%%%d.f"), m_width);
-            }
-            else
-            {
-                m_format.Printf(_T("%%%d.%df"), m_width, m_precision);
-            }
-        }
-
-        text.Printf(m_format, val);
-    }
-    //else: text already contains the string
-
-    return text;
 }
 
 }
 
-void wxGridCellFloatRenderer::Draw(wxGrid& grid,
-                                   wxGridCellAttr& attr,
-                                   wxDC& dc,
-                                   const wxRect& rectCell,
-                                   int row, int col,
-                                   bool isSelected)
+void* wxGridTableBase::GetValueAsCustom( int WXUNUSED(row), int WXUNUSED(col),
+                                         const wxString& WXUNUSED(typeName) )
 {
 {
-    wxGridCellRenderer::Draw(grid, attr, dc, rectCell, row, col, isSelected);
-
-    SetTextColoursAndFont(grid, attr, dc, isSelected);
-
-    // draw the text right aligned by default
-    int hAlign, vAlign;
-    attr.GetAlignment(&hAlign, &vAlign);
-    hAlign = wxRIGHT;
-
-    wxRect rect = rectCell;
-    rect.Inflate(-1);
-
-    grid.DrawTextRectangle(dc, GetString(grid, row, col), rect, hAlign, vAlign);
+    return NULL;
 }
 
 }
 
-wxSize wxGridCellFloatRenderer::GetBestSize(wxGrid& grid,
-                                            wxGridCellAttr& attr,
-                                            wxDC& dc,
-                                            int row, int col)
+void  wxGridTableBase::SetValueAsCustom( int WXUNUSED(row), int WXUNUSED(col),
+                                         const wxString& WXUNUSED(typeName),
+                                         void* WXUNUSED(value) )
 {
 {
-    return DoGetBestSize(attr, dc, GetString(grid, row, col));
 }
 
 }
 
-void wxGridCellFloatRenderer::SetParameters(const wxString& params)
-{
-    bool ok = TRUE;
+//////////////////////////////////////////////////////////////////////
+//
+// Message class for the grid table to send requests and notifications
+// to the grid view
+//
 
 
-    if ( !params )
-    {
-        // reset to defaults
-        SetWidth(-1);
-        SetPrecision(-1);
-    }
-    else
-    {
-        wxString tmp = params.BeforeFirst(_T(','));
-        if ( !!tmp )
-        {
-            long width;
-            if ( !tmp.ToLong(&width) )
-            {
-                ok = FALSE;
-            }
-            else
-            {
-                SetWidth((int)width);
-
-                tmp = params.AfterFirst(_T(','));
-                if ( !!tmp )
-                {
-                    long precision;
-                    if ( !tmp.ToLong(&precision) )
-                    {
-                        ok = FALSE;
-                    }
-                    else
-                    {
-                        SetPrecision((int)precision);
-                    }
-                }
-            }
-        }
-
-        if ( !ok )
-        {
-            wxLogDebug(_T("Invalid wxGridCellFloatRenderer parameter string "
-                          "'%s ignored"), params.c_str());
-        }
-    }
+wxGridTableMessage::wxGridTableMessage()
+{
+    m_table =  NULL;
+    m_id = -1;
+    m_comInt1 = -1;
+    m_comInt2 = -1;
 }
 
 }
 
-// ----------------------------------------------------------------------------
-// wxGridCellBoolRenderer
-// ----------------------------------------------------------------------------
+wxGridTableMessage::wxGridTableMessage( wxGridTableBase *table, int id,
+                                        int commandInt1, int commandInt2 )
+{
+    m_table = table;
+    m_id = id;
+    m_comInt1 = commandInt1;
+    m_comInt2 = commandInt2;
+}
 
 
-wxSize wxGridCellBoolRenderer::ms_sizeCheckMark;
+//////////////////////////////////////////////////////////////////////
+//
+// A basic grid table for string data. An object of this class will
+// created by wxGrid if you don't specify an alternative table class.
+//
 
 
-// FIXME these checkbox size calculations are really ugly...
+WX_DEFINE_OBJARRAY(wxGridStringArray)
 
 
-// between checkmark and box
-static const wxCoord wxGRID_CHECKMARK_MARGIN = 2;
+IMPLEMENT_DYNAMIC_CLASS( wxGridStringTable, wxGridTableBase )
 
 
-wxSize wxGridCellBoolRenderer::GetBestSize(wxGrid& grid,
-                                           wxGridCellAttr& WXUNUSED(attr),
-                                           wxDC& WXUNUSED(dc),
-                                           int WXUNUSED(row),
-                                           int WXUNUSED(col))
+wxGridStringTable::wxGridStringTable()
+        : wxGridTableBase()
 {
 {
-    // compute it only once (no locks for MT safeness in GUI thread...)
-    if ( !ms_sizeCheckMark.x )
-    {
-        // get checkbox size
-        wxCoord checkSize = 0;
-        wxCheckBox *checkbox = new wxCheckBox(&grid, -1, wxEmptyString);
-        wxSize size = checkbox->GetBestSize();
-        checkSize = size.y + 2*wxGRID_CHECKMARK_MARGIN;
+    m_numCols = 0;
+}
 
 
-        // FIXME wxGTK::wxCheckBox::GetBestSize() gives "wrong" result
-#if defined(__WXGTK__) || defined(__WXMOTIF__)
-        checkSize -= size.y / 2;
-#endif
+wxGridStringTable::wxGridStringTable( int numRows, int numCols )
+        : wxGridTableBase()
+{
+    m_numCols = numCols;
 
 
-        delete checkbox;
+    m_data.Alloc( numRows );
 
 
-        ms_sizeCheckMark.x = ms_sizeCheckMark.y = checkSize;
-    }
+    wxArrayString sa;
+    sa.Alloc( numCols );
+    sa.Add( wxEmptyString, numCols );
 
 
-    return ms_sizeCheckMark;
+    m_data.Add( sa, numRows );
 }
 
 }
 
-void wxGridCellBoolRenderer::Draw(wxGrid& grid,
-                                  wxGridCellAttr& attr,
-                                  wxDC& dc,
-                                  const wxRect& rect,
-                                  int row, int col,
-                                  bool isSelected)
+wxString wxGridStringTable::GetValue( int row, int col )
 {
 {
-    wxGridCellRenderer::Draw(grid, attr, dc, rect, row, col, isSelected);
+    wxCHECK_MSG( (row >= 0 && row < GetNumberRows()) &&
+                 (col >= 0 && col < GetNumberCols()),
+                 wxEmptyString,
+                 wxT("invalid row or column index in wxGridStringTable") );
 
 
-    // draw a check mark in the centre (ignoring alignment - TODO)
-    wxSize size = GetBestSize(grid, attr, dc, row, col);
+    return m_data[row][col];
+}
 
 
-    // don't draw outside the cell
-    wxCoord minSize = wxMin(rect.width, rect.height);
-    if ( size.x >= minSize || size.y >= minSize )
-    {
-        // and even leave (at least) 1 pixel margin
-        size.x = size.y = minSize - 2;
-    }
+void wxGridStringTable::SetValue( int row, int col, const wxString& value )
+{
+    wxCHECK_RET( (row >= 0 && row < GetNumberRows()) &&
+                 (col >= 0 && col < GetNumberCols()),
+                 wxT("invalid row or column index in wxGridStringTable") );
 
 
-    // draw a border around checkmark
-    wxRect rectBorder;
-    rectBorder.x = rect.x + rect.width/2 - size.x/2;
-    rectBorder.y = rect.y + rect.height/2 - size.y/2;
-    rectBorder.width = size.x;
-    rectBorder.height = size.y;
+    m_data[row][col] = value;
+}
 
 
-    bool value;
-    if ( grid.GetTable()->CanGetValueAs(row, col, wxGRID_VALUE_BOOL) )
-        value = grid.GetTable()->GetValueAsBool(row, col);
-    else
-        value = !!grid.GetTable()->GetValue(row, col);
+void wxGridStringTable::Clear()
+{
+    int row, col;
+    int numRows, numCols;
 
 
-    if ( value )
+    numRows = m_data.GetCount();
+    if ( numRows > 0 )
     {
     {
-        wxRect rectMark = rectBorder;
-#ifdef __WXMSW__
-        // MSW DrawCheckMark() is weird (and should probably be changed...)
-        rectMark.Inflate(-wxGRID_CHECKMARK_MARGIN/2);
-        rectMark.x++;
-        rectMark.y++;
-#else // !MSW
-        rectMark.Inflate(-wxGRID_CHECKMARK_MARGIN);
-#endif // MSW/!MSW
+        numCols = m_data[0].GetCount();
 
 
-        dc.SetTextForeground(attr.GetTextColour());
-        dc.DrawCheckMark(rectMark);
+        for ( row = 0; row < numRows; row++ )
+        {
+            for ( col = 0; col < numCols; col++ )
+            {
+                m_data[row][col] = wxEmptyString;
+            }
+        }
     }
     }
-
-    dc.SetBrush(*wxTRANSPARENT_BRUSH);
-    dc.SetPen(wxPen(attr.GetTextColour(), 1, wxSOLID));
-    dc.DrawRectangle(rectBorder);
 }
 
 }
 
-// ----------------------------------------------------------------------------
-// wxGridCellAttr
-// ----------------------------------------------------------------------------
-
-wxGridCellAttr *wxGridCellAttr::Clone() const
+bool wxGridStringTable::InsertRows( size_t pos, size_t numRows )
 {
 {
-    wxGridCellAttr *attr = new wxGridCellAttr;
-    if ( HasTextColour() )
-        attr->SetTextColour(GetTextColour());
-    if ( HasBackgroundColour() )
-        attr->SetBackgroundColour(GetBackgroundColour());
-    if ( HasFont() )
-        attr->SetFont(GetFont());
-    if ( HasAlignment() )
-        attr->SetAlignment(m_hAlign, m_vAlign);
+    size_t curNumRows = m_data.GetCount();
+    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() :
+                          ( GetView() ? GetView()->GetNumberCols() : 0 ) );
 
 
-    if ( m_renderer )
-    {
-        attr->SetRenderer(m_renderer);
-        m_renderer->IncRef();
-    }
-    if ( m_editor )
+    if ( pos >= curNumRows )
     {
     {
-        attr->SetEditor(m_editor);
-        m_editor->IncRef();
+        return AppendRows( numRows );
     }
 
     }
 
-    if ( IsReadOnly() )
-        attr->SetReadOnly();
+    wxArrayString sa;
+    sa.Alloc( curNumCols );
+    sa.Add( wxEmptyString, curNumCols );
+    m_data.Insert( sa, pos, numRows );
+
+    if ( GetView() )
+    {
+        wxGridTableMessage msg( this,
+                                wxGRIDTABLE_NOTIFY_ROWS_INSERTED,
+                                pos,
+                                numRows );
 
 
-    attr->SetDefAttr(m_defGridAttr);
+        GetView()->ProcessTableMessage( msg );
+    }
 
 
-    return attr;
+    return true;
 }
 
 }
 
-const wxColour& wxGridCellAttr::GetTextColour() const
+bool wxGridStringTable::AppendRows( size_t numRows )
 {
 {
-    if (HasTextColour())
-    {
-        return m_colText;
-    }
-    else if (m_defGridAttr != this)
-    {
-        return m_defGridAttr->GetTextColour();
-    }
-    else
+    size_t curNumRows = m_data.GetCount();
+    size_t curNumCols = ( curNumRows > 0
+                         ? m_data[0].GetCount()
+                         : ( GetView() ? GetView()->GetNumberCols() : 0 ) );
+
+    wxArrayString sa;
+    if ( curNumCols > 0 )
     {
     {
-        wxFAIL_MSG(wxT("Missing default cell attribute"));
-        return wxNullColour;
+        sa.Alloc( curNumCols );
+        sa.Add( wxEmptyString, curNumCols );
     }
     }
-}
 
 
+    m_data.Add( sa, numRows );
 
 
-const wxColour& wxGridCellAttr::GetBackgroundColour() const
-{
-    if (HasBackgroundColour())
-        return m_colBack;
-    else if (m_defGridAttr != this)
-        return m_defGridAttr->GetBackgroundColour();
-    else
+    if ( GetView() )
     {
     {
-        wxFAIL_MSG(wxT("Missing default cell attribute"));
-        return wxNullColour;
+        wxGridTableMessage msg( this,
+                                wxGRIDTABLE_NOTIFY_ROWS_APPENDED,
+                                numRows );
+
+        GetView()->ProcessTableMessage( msg );
     }
     }
-}
 
 
+    return true;
+}
 
 
-const wxFont& wxGridCellAttr::GetFont() const
+bool wxGridStringTable::DeleteRows( size_t pos, size_t numRows )
 {
 {
-    if (HasFont())
-        return m_font;
-    else if (m_defGridAttr != this)
-        return m_defGridAttr->GetFont();
-    else
+    size_t curNumRows = m_data.GetCount();
+
+    if ( pos >= curNumRows )
     {
     {
-        wxFAIL_MSG(wxT("Missing default cell attribute"));
-        return wxNullFont;
+        wxFAIL_MSG( wxString::Format
+                    (
+                        wxT("Called wxGridStringTable::DeleteRows(pos=%lu, N=%lu)\nPos value is invalid for present table with %lu rows"),
+                        (unsigned long)pos,
+                        (unsigned long)numRows,
+                        (unsigned long)curNumRows
+                    ) );
+
+        return false;
     }
     }
-}
 
 
+    if ( numRows > curNumRows - pos )
+    {
+        numRows = curNumRows - pos;
+    }
 
 
-void wxGridCellAttr::GetAlignment(int *hAlign, int *vAlign) const
-{
-    if (HasAlignment())
+    if ( numRows >= curNumRows )
     {
     {
-        if ( hAlign ) *hAlign = m_hAlign;
-        if ( vAlign ) *vAlign = m_vAlign;
+        m_data.Clear();
     }
     }
-    else if (m_defGridAttr != this)
-        m_defGridAttr->GetAlignment(hAlign, vAlign);
     else
     {
     else
     {
-        wxFAIL_MSG(wxT("Missing default cell attribute"));
+        m_data.RemoveAt( pos, numRows );
     }
     }
-}
 
 
+    if ( GetView() )
+    {
+        wxGridTableMessage msg( this,
+                                wxGRIDTABLE_NOTIFY_ROWS_DELETED,
+                                pos,
+                                numRows );
+
+        GetView()->ProcessTableMessage( msg );
+    }
 
 
-// GetRenderer and GetEditor use a slightly different decision path about
-// which attribute to use.  If a non-default attr object has one then it is
-// used, otherwise the default editor or renderer is fetched from the grid and
-// used.  It should be the default for the data type of the cell.  If it is
-// NULL (because the table has a type that the grid does not have in its
-// registry,) then the grid's default editor or renderer is used.
+    return true;
+}
 
 
-wxGridCellRenderer* wxGridCellAttr::GetRenderer(wxGrid* grid, int row, int col) const
+bool wxGridStringTable::InsertCols( size_t pos, size_t numCols )
 {
 {
-    wxGridCellRenderer* renderer = NULL;
+    size_t row, col;
+
+    size_t curNumRows = m_data.GetCount();
+    size_t curNumCols = ( curNumRows > 0
+                         ? m_data[0].GetCount()
+                         : ( GetView() ? GetView()->GetNumberCols() : 0 ) );
 
 
-    if ( m_defGridAttr != this || grid == NULL )
+    if ( pos >= curNumCols )
     {
     {
-        renderer = m_renderer;      // use local attribute
-        if ( renderer )
-            renderer->IncRef();
+        return AppendCols( numCols );
     }
 
     }
 
-    if ( !renderer && grid )        // get renderer for the data type
+    if ( !m_colLabels.IsEmpty() )
     {
     {
-        // GetDefaultRendererForCell() will do IncRef() for us
-        renderer = grid->GetDefaultRendererForCell(row, col);
+        m_colLabels.Insert( wxEmptyString, pos, numCols );
+
+        size_t i;
+        for ( i = pos; i < pos + numCols; i++ )
+            m_colLabels[i] = wxGridTableBase::GetColLabelValue( i );
     }
 
     }
 
-    if ( !renderer )
+    for ( row = 0; row < curNumRows; row++ )
     {
     {
-        // if we still don't have one then use the grid default
-        // (no need for IncRef() here neither)
-        renderer = m_defGridAttr->GetRenderer(NULL,0,0);
+        for ( col = pos; col < pos + numCols; col++ )
+        {
+            m_data[row].Insert( wxEmptyString, col );
+        }
     }
 
     }
 
-    if ( !renderer)
+    m_numCols += numCols;
+
+    if ( GetView() )
     {
     {
-        wxFAIL_MSG(wxT("Missing default cell attribute"));
+        wxGridTableMessage msg( this,
+                                wxGRIDTABLE_NOTIFY_COLS_INSERTED,
+                                pos,
+                                numCols );
+
+        GetView()->ProcessTableMessage( msg );
     }
 
     }
 
-    return renderer;
+    return true;
 }
 
 }
 
-wxGridCellEditor* wxGridCellAttr::GetEditor(wxGrid* grid, int row, int col) const
+bool wxGridStringTable::AppendCols( size_t numCols )
 {
 {
-    wxGridCellEditor* editor = NULL;
+    size_t row;
+
+    size_t curNumRows = m_data.GetCount();
 
 
-    if ( m_defGridAttr != this || grid == NULL )
+    for ( row = 0; row < curNumRows; row++ )
     {
     {
-        editor = m_editor;      // use local attribute
-        if ( editor )
-            editor->IncRef();
+        m_data[row].Add( wxEmptyString, numCols );
     }
 
     }
 
-    if ( !editor && grid )                   // get renderer for the data type
-        editor = grid->GetDefaultEditorForCell(row, col);
+    m_numCols += numCols;
 
 
-    if ( !editor )
-        // if we still don't have one then use the grid default
-        editor = m_defGridAttr->GetEditor(NULL,0,0);
-
-    if ( !editor )
+    if ( GetView() )
     {
     {
-        wxFAIL_MSG(wxT("Missing default cell attribute"));
+        wxGridTableMessage msg( this,
+                                wxGRIDTABLE_NOTIFY_COLS_APPENDED,
+                                numCols );
+
+        GetView()->ProcessTableMessage( msg );
     }
 
     }
 
-    return editor;
+    return true;
 }
 
 }
 
-// ----------------------------------------------------------------------------
-// wxGridCellAttrData
-// ----------------------------------------------------------------------------
-
-void wxGridCellAttrData::SetAttr(wxGridCellAttr *attr, int row, int col)
+bool wxGridStringTable::DeleteCols( size_t pos, size_t numCols )
 {
 {
-    int n = FindIndex(row, col);
-    if ( n == wxNOT_FOUND )
+    size_t row;
+
+    size_t curNumRows = m_data.GetCount();
+    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() :
+                          ( GetView() ? GetView()->GetNumberCols() : 0 ) );
+
+    if ( pos >= curNumCols )
     {
     {
-        // add the attribute
-        m_attrs.Add(new wxGridCellWithAttr(row, col, attr));
+        wxFAIL_MSG( wxString::Format
+                    (
+                        wxT("Called wxGridStringTable::DeleteCols(pos=%lu, N=%lu)\nPos value is invalid for present table with %lu cols"),
+                        (unsigned long)pos,
+                        (unsigned long)numCols,
+                        (unsigned long)curNumCols
+                    ) );
+        return false;
     }
     }
+
+    int colID;
+    if ( GetView() )
+        colID = GetView()->GetColAt( pos );
     else
     else
+        colID = pos;
+
+    if ( numCols > curNumCols - colID )
     {
     {
-        if ( attr )
+        numCols = curNumCols - colID;
+    }
+
+    if ( !m_colLabels.IsEmpty() )
+    {
+        // m_colLabels stores just as many elements as it needs, e.g. if only
+        // the label of the first column had been set it would have only one
+        // element and not numCols, so account for it
+        int numRemaining = m_colLabels.size() - colID;
+        if (numRemaining > 0)
+            m_colLabels.RemoveAt( colID, wxMin(numCols, numRemaining) );
+    }
+
+    if ( numCols >= curNumCols )
+    {
+        for ( row = 0; row < curNumRows; row++ )
         {
         {
-            // change the attribute
-            m_attrs[(size_t)n].attr = attr;
+            m_data[row].Clear();
         }
         }
-        else
+
+        m_numCols = 0;
+    }
+    else // something will be left
+    {
+        for ( row = 0; row < curNumRows; row++ )
         {
         {
-            // remove this attribute
-            m_attrs.RemoveAt((size_t)n);
+            m_data[row].RemoveAt( colID, numCols );
         }
         }
+
+        m_numCols -= numCols;
     }
     }
-}
 
 
-wxGridCellAttr *wxGridCellAttrData::GetAttr(int row, int col) const
-{
-    wxGridCellAttr *attr = (wxGridCellAttr *)NULL;
-
-    int n = FindIndex(row, col);
-    if ( n != wxNOT_FOUND )
+    if ( GetView() )
     {
     {
-        attr = m_attrs[(size_t)n].attr;
-        attr->IncRef();
+        wxGridTableMessage msg( this,
+                                wxGRIDTABLE_NOTIFY_COLS_DELETED,
+                                pos,
+                                numCols );
+
+        GetView()->ProcessTableMessage( msg );
     }
 
     }
 
-    return attr;
+    return true;
 }
 
 }
 
-void wxGridCellAttrData::UpdateAttrRows( size_t pos, int numRows )
+wxString wxGridStringTable::GetRowLabelValue( int row )
 {
 {
-    size_t count = m_attrs.GetCount();
-    for ( size_t n = 0; n < count; n++ )
+    if ( row > (int)(m_rowLabels.GetCount()) - 1 )
     {
     {
-        wxGridCellCoords& coords = m_attrs[n].coords;
-        wxCoord row = coords.GetRow();
-        if ((size_t)row >= pos)
-        {
-            if (numRows > 0)
-            {
-                // If rows inserted, include row counter where necessary
-                coords.SetRow(row + numRows);
-            }
-            else if (numRows < 0)
-            {
-                // If rows deleted ...
-                if ((size_t)row >= pos - numRows)
-                {
-                    // ...either decrement row counter (if row still exists)...
-                    coords.SetRow(row + numRows);
-                }
-                else
-                {
-                    // ...or remove the attribute
-                    m_attrs.RemoveAt((size_t)n);
-                    n--; count--;
-                }
-            }
-        }
+        // using default label
+        //
+        return wxGridTableBase::GetRowLabelValue( row );
     }
     }
-}
-
-void wxGridCellAttrData::UpdateAttrCols( size_t pos, int numCols )
-{
-    size_t count = m_attrs.GetCount();
-    for ( size_t n = 0; n < count; n++ )
+    else
     {
     {
-        wxGridCellCoords& coords = m_attrs[n].coords;
-        wxCoord col = coords.GetCol();
-        if ( (size_t)col >= pos )
-        {
-            if ( numCols > 0 )
-            {
-                // If rows inserted, include row counter where necessary
-                coords.SetCol(col + numCols);
-            }
-            else if (numCols < 0)
-            {
-                // If rows deleted ...
-                if ((size_t)col >= pos - numCols)
-                {
-                    // ...either decrement row counter (if row still exists)...
-                    coords.SetCol(col + numCols);
-                }
-                else
-                {
-                    // ...or remove the attribute
-                    m_attrs.RemoveAt((size_t)n);
-                    n--; count--;
-                }
-            }
-        }
+        return m_rowLabels[row];
     }
 }
 
     }
 }
 
-int wxGridCellAttrData::FindIndex(int row, int col) const
+wxString wxGridStringTable::GetColLabelValue( int col )
 {
 {
-    size_t count = m_attrs.GetCount();
-    for ( size_t n = 0; n < count; n++ )
+    if ( col > (int)(m_colLabels.GetCount()) - 1 )
     {
     {
-        const wxGridCellCoords& coords = m_attrs[n].coords;
-        if ( (coords.GetRow() == row) && (coords.GetCol() == col) )
-        {
-            return n;
-        }
+        // using default label
+        //
+        return wxGridTableBase::GetColLabelValue( col );
     }
     }
-
-    return wxNOT_FOUND;
-}
-
-// ----------------------------------------------------------------------------
-// wxGridRowOrColAttrData
-// ----------------------------------------------------------------------------
-
-wxGridRowOrColAttrData::~wxGridRowOrColAttrData()
-{
-    size_t count = m_attrs.Count();
-    for ( size_t n = 0; n < count; n++ )
+    else
     {
     {
-        m_attrs[n]->DecRef();
+        return m_colLabels[col];
     }
 }
 
     }
 }
 
-wxGridCellAttr *wxGridRowOrColAttrData::GetAttr(int rowOrCol) const
+void wxGridStringTable::SetRowLabelValue( int row, const wxString& value )
 {
 {
-    wxGridCellAttr *attr = (wxGridCellAttr *)NULL;
-
-    int n = m_rowsOrCols.Index(rowOrCol);
-    if ( n != wxNOT_FOUND )
+    if ( row > (int)(m_rowLabels.GetCount()) - 1 )
     {
     {
-        attr = m_attrs[(size_t)n];
-        attr->IncRef();
+        int n = m_rowLabels.GetCount();
+        int i;
+
+        for ( i = n; i <= row; i++ )
+        {
+            m_rowLabels.Add( wxGridTableBase::GetRowLabelValue(i) );
+        }
     }
 
     }
 
-    return attr;
+    m_rowLabels[row] = value;
 }
 
 }
 
-void wxGridRowOrColAttrData::SetAttr(wxGridCellAttr *attr, int rowOrCol)
+void wxGridStringTable::SetColLabelValue( int col, const wxString& value )
 {
 {
-    int i = m_rowsOrCols.Index(rowOrCol);
-    if ( i == wxNOT_FOUND )
-    {
-        // add the attribute
-        m_rowsOrCols.Add(rowOrCol);
-        m_attrs.Add(attr);
-    }
-    else
+    if ( col > (int)(m_colLabels.GetCount()) - 1 )
     {
     {
-        size_t n = (size_t)i;
-        if ( attr )
-        {
-            // change the attribute
-            m_attrs[n]->DecRef();
-            m_attrs[n] = attr;
-        }
-        else
+        int n = m_colLabels.GetCount();
+        int i;
+
+        for ( i = n; i <= col; i++ )
         {
         {
-            // remove this attribute
-            m_attrs[n]->DecRef();
-            m_rowsOrCols.RemoveAt(n);
-            m_attrs.RemoveAt(n);
+            m_colLabels.Add( wxGridTableBase::GetColLabelValue(i) );
         }
     }
         }
     }
+
+    m_colLabels[col] = value;
 }
 
 }
 
-void wxGridRowOrColAttrData::UpdateAttrRowsOrCols( size_t pos, int numRowsOrCols )
+
+//////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////
+
+BEGIN_EVENT_TABLE(wxGridSubwindow, wxWindow)
+    EVT_MOUSE_CAPTURE_LOST(wxGridSubwindow::OnMouseCaptureLost)
+END_EVENT_TABLE()
+
+void wxGridSubwindow::OnMouseCaptureLost(wxMouseCaptureLostEvent& WXUNUSED(event))
 {
 {
-    size_t count = m_attrs.GetCount();
-    for ( size_t n = 0; n < count; n++ )
-    {
-        int & rowOrCol = m_rowsOrCols[n];
-        if ( (size_t)rowOrCol >= pos )
-        {
-            if ( numRowsOrCols > 0 )
-            {
-                // If rows inserted, include row counter where necessary
-                rowOrCol += numRowsOrCols;
-            }
-            else if ( numRowsOrCols < 0)
-            {
-                // If rows deleted, either decrement row counter (if row still exists)
-                if ((size_t)rowOrCol >= pos - numRowsOrCols)
-                    rowOrCol += numRowsOrCols;
-                else
-                {
-                    m_rowsOrCols.RemoveAt((size_t)n);
-                    m_attrs.RemoveAt((size_t)n);
-                    n--; count--;
-                }
-            }
-        }
-    }
+    m_owner->CancelMouseCapture();
 }
 
 }
 
-// ----------------------------------------------------------------------------
-// wxGridCellAttrProvider
-// ----------------------------------------------------------------------------
+BEGIN_EVENT_TABLE( wxGridRowLabelWindow, wxGridSubwindow )
+    EVT_PAINT( wxGridRowLabelWindow::OnPaint )
+    EVT_MOUSEWHEEL( wxGridRowLabelWindow::OnMouseWheel )
+    EVT_MOUSE_EVENTS( wxGridRowLabelWindow::OnMouseEvent )
+END_EVENT_TABLE()
 
 
-wxGridCellAttrProvider::wxGridCellAttrProvider()
+void wxGridRowLabelWindow::OnPaint( wxPaintEvent& WXUNUSED(event) )
 {
 {
-    m_data = (wxGridCellAttrProviderData *)NULL;
+    wxPaintDC dc(this);
+
+    // NO - don't do this because it will set both the x and y origin
+    // coords to match the parent scrolled window and we just want to
+    // set the y coord  - MB
+    //
+    // m_owner->PrepareDC( dc );
+
+    int x, y;
+    m_owner->CalcUnscrolledPosition( 0, 0, &x, &y );
+    wxPoint pt = dc.GetDeviceOrigin();
+    dc.SetDeviceOrigin( pt.x, pt.y-y );
+
+    wxArrayInt rows = m_owner->CalcRowLabelsExposed( GetUpdateRegion() );
+    m_owner->DrawRowLabels( dc, rows );
 }
 
 }
 
-wxGridCellAttrProvider::~wxGridCellAttrProvider()
+void wxGridRowLabelWindow::OnMouseEvent( wxMouseEvent& event )
 {
 {
-    delete m_data;
+    m_owner->ProcessRowLabelMouseEvent( event );
 }
 
 }
 
-void wxGridCellAttrProvider::InitData()
+void wxGridRowLabelWindow::OnMouseWheel( wxMouseEvent& event )
 {
 {
-    m_data = new wxGridCellAttrProviderData;
+    if (!m_owner->GetEventHandler()->ProcessEvent( event ))
+        event.Skip();
 }
 
 }
 
-wxGridCellAttr *wxGridCellAttrProvider::GetAttr(int row, int col) const
+//////////////////////////////////////////////////////////////////////
+
+BEGIN_EVENT_TABLE( wxGridColLabelWindow, wxGridSubwindow )
+    EVT_PAINT( wxGridColLabelWindow::OnPaint )
+    EVT_MOUSEWHEEL( wxGridColLabelWindow::OnMouseWheel )
+    EVT_MOUSE_EVENTS( wxGridColLabelWindow::OnMouseEvent )
+END_EVENT_TABLE()
+
+void wxGridColLabelWindow::OnPaint( wxPaintEvent& WXUNUSED(event) )
 {
 {
-    wxGridCellAttr *attr = (wxGridCellAttr *)NULL;
-    if ( m_data )
-    {
-        // first look for the attribute of this specific cell
-        attr = m_data->m_cellAttrs.GetAttr(row, col);
+    wxPaintDC dc(this);
 
 
-        if ( !attr )
-        {
-            // then look for the col attr (col attributes are more common than
-            // the row ones, hence they have priority)
-            attr = m_data->m_colAttrs.GetAttr(col);
-        }
+    // NO - don't do this because it will set both the x and y origin
+    // coords to match the parent scrolled window and we just want to
+    // set the x coord  - MB
+    //
+    // m_owner->PrepareDC( dc );
 
 
-        if ( !attr )
-        {
-            // finally try the row attributes
-            attr = m_data->m_rowAttrs.GetAttr(row);
-        }
-    }
+    int x, y;
+    m_owner->CalcUnscrolledPosition( 0, 0, &x, &y );
+    wxPoint pt = dc.GetDeviceOrigin();
+    if (GetLayoutDirection() == wxLayout_RightToLeft)
+        dc.SetDeviceOrigin( pt.x+x, pt.y );
+    else
+        dc.SetDeviceOrigin( pt.x-x, pt.y );
 
 
-    return attr;
+    wxArrayInt cols = m_owner->CalcColLabelsExposed( GetUpdateRegion() );
+    m_owner->DrawColLabels( dc, cols );
 }
 
 }
 
-void wxGridCellAttrProvider::SetAttr(wxGridCellAttr *attr,
-                                     int row, int col)
+void wxGridColLabelWindow::OnMouseEvent( wxMouseEvent& event )
 {
 {
-    if ( !m_data )
-        InitData();
-
-    m_data->m_cellAttrs.SetAttr(attr, row, col);
+    m_owner->ProcessColLabelMouseEvent( event );
 }
 
 }
 
-void wxGridCellAttrProvider::SetRowAttr(wxGridCellAttr *attr, int row)
+void wxGridColLabelWindow::OnMouseWheel( wxMouseEvent& event )
 {
 {
-    if ( !m_data )
-        InitData();
-
-    m_data->m_rowAttrs.SetAttr(attr, row);
+    if (!m_owner->GetEventHandler()->ProcessEvent( event ))
+        event.Skip();
 }
 
 }
 
-void wxGridCellAttrProvider::SetColAttr(wxGridCellAttr *attr, int col)
-{
-    if ( !m_data )
-        InitData();
+//////////////////////////////////////////////////////////////////////
 
 
-    m_data->m_colAttrs.SetAttr(attr, col);
-}
+BEGIN_EVENT_TABLE( wxGridCornerLabelWindow, wxGridSubwindow )
+    EVT_MOUSEWHEEL( wxGridCornerLabelWindow::OnMouseWheel )
+    EVT_MOUSE_EVENTS( wxGridCornerLabelWindow::OnMouseEvent )
+    EVT_PAINT( wxGridCornerLabelWindow::OnPaint )
+END_EVENT_TABLE()
 
 
-void wxGridCellAttrProvider::UpdateAttrRows( size_t pos, int numRows )
+void wxGridCornerLabelWindow::OnPaint( wxPaintEvent& WXUNUSED(event) )
 {
 {
-    if ( m_data )
-    {
-        m_data->m_cellAttrs.UpdateAttrRows( pos, numRows );
+    wxPaintDC dc(this);
 
 
-        m_data->m_rowAttrs.UpdateAttrRowsOrCols( pos, numRows );
-    }
+    m_owner->DrawCornerLabel(dc);
 }
 
 }
 
-void wxGridCellAttrProvider::UpdateAttrCols( size_t pos, int numCols )
+void wxGridCornerLabelWindow::OnMouseEvent( wxMouseEvent& event )
 {
 {
-    if ( m_data )
-    {
-        m_data->m_cellAttrs.UpdateAttrCols( pos, numCols );
-
-        m_data->m_colAttrs.UpdateAttrRowsOrCols( pos, numCols );
-    }
+    m_owner->ProcessCornerLabelMouseEvent( event );
 }
 
 }
 
-// ----------------------------------------------------------------------------
-// wxGridTypeRegistry
-// ----------------------------------------------------------------------------
-
-wxGridTypeRegistry::~wxGridTypeRegistry()
+void wxGridCornerLabelWindow::OnMouseWheel( wxMouseEvent& event )
 {
 {
-    size_t count = m_typeinfo.Count();
-    for ( size_t i = 0; i < count; i++ )
-        delete m_typeinfo[i];
+    if (!m_owner->GetEventHandler()->ProcessEvent(event))
+        event.Skip();
 }
 
 }
 
+//////////////////////////////////////////////////////////////////////
 
 
-void wxGridTypeRegistry::RegisterDataType(const wxString& typeName,
-                                          wxGridCellRenderer* renderer,
-                                          wxGridCellEditor* editor)
+BEGIN_EVENT_TABLE( wxGridWindow, wxGridSubwindow )
+    EVT_PAINT( wxGridWindow::OnPaint )
+    EVT_MOUSEWHEEL( wxGridWindow::OnMouseWheel )
+    EVT_MOUSE_EVENTS( wxGridWindow::OnMouseEvent )
+    EVT_KEY_DOWN( wxGridWindow::OnKeyDown )
+    EVT_KEY_UP( wxGridWindow::OnKeyUp )
+    EVT_CHAR( wxGridWindow::OnChar )
+    EVT_SET_FOCUS( wxGridWindow::OnFocus )
+    EVT_KILL_FOCUS( wxGridWindow::OnFocus )
+    EVT_ERASE_BACKGROUND( wxGridWindow::OnEraseBackground )
+END_EVENT_TABLE()
+
+void wxGridWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
 {
 {
-    wxGridDataTypeInfo* info = new wxGridDataTypeInfo(typeName, renderer, editor);
+    wxPaintDC dc( this );
+    m_owner->PrepareDC( dc );
+    wxRegion reg = GetUpdateRegion();
+    wxGridCellCoordsArray dirtyCells = m_owner->CalcCellsExposed( reg );
+    m_owner->DrawGridCellArea( dc, dirtyCells );
 
 
-    // is it already registered?
-    int loc = FindRegisteredDataType(typeName);
-    if ( loc != wxNOT_FOUND )
-    {
-        delete m_typeinfo[loc];
-        m_typeinfo[loc] = info;
-    }
-    else
-    {
-        m_typeinfo.Add(info);
-    }
-}
+    m_owner->DrawGridSpace( dc );
 
 
-int wxGridTypeRegistry::FindRegisteredDataType(const wxString& typeName)
-{
-    size_t count = m_typeinfo.GetCount();
-    for ( size_t i = 0; i < count; i++ )
-    {
-        if ( typeName == m_typeinfo[i]->m_typeName )
-        {
-            return i;
-        }
-    }
+    m_owner->DrawAllGridLines( dc, reg );
 
 
-    return wxNOT_FOUND;
+    m_owner->DrawHighlight( dc, dirtyCells );
 }
 
 }
 
-int wxGridTypeRegistry::FindDataType(const wxString& typeName)
+void wxGrid::Render( wxDC& dc,
+                     const wxPoint& position,
+                     const wxSize& size,
+                     const wxGridCellCoords& topLeft,
+                     const wxGridCellCoords& bottomRight,
+                     int style )
 {
 {
-    int index = FindRegisteredDataType(typeName);
-    if ( index == wxNOT_FOUND )
+    wxCHECK_RET( bottomRight.GetCol() < GetNumberCols(),
+                 "Invalid right column" );
+    wxCHECK_RET( bottomRight.GetRow() < GetNumberRows(),
+                 "Invalid bottom row" );
+
+    // store user settings and reset later
+
+    // remove grid selection, don't paint selection colour
+    // unless we have wxGRID_DRAW_SELECTION
+    // block selections are the only ones catered for here
+    wxGridCellCoordsArray selectedCells;
+    bool hasSelection = IsSelection();
+    if ( hasSelection && !( style & wxGRID_DRAW_SELECTION ) )
     {
     {
-        // check whether this is one of the standard ones, in which case
-        // register it "on the fly"
-        if ( typeName == wxGRID_VALUE_STRING )
-        {
-            RegisterDataType(wxGRID_VALUE_STRING,
-                             new wxGridCellStringRenderer,
-                             new wxGridCellTextEditor);
-        }
-        else if ( typeName == wxGRID_VALUE_BOOL )
-        {
-            RegisterDataType(wxGRID_VALUE_BOOL,
-                             new wxGridCellBoolRenderer,
-                             new wxGridCellBoolEditor);
-        }
-        else if ( typeName == wxGRID_VALUE_NUMBER )
-        {
-            RegisterDataType(wxGRID_VALUE_NUMBER,
-                             new wxGridCellNumberRenderer,
-                             new wxGridCellNumberEditor);
-        }
-        else if ( typeName == wxGRID_VALUE_FLOAT )
-        {
-            RegisterDataType(wxGRID_VALUE_FLOAT,
-                             new wxGridCellFloatRenderer,
-                             new wxGridCellFloatEditor);
-        }
-        else if ( typeName == wxGRID_VALUE_CHOICE )
-        {
-            RegisterDataType(wxGRID_VALUE_CHOICE,
-                             new wxGridCellStringRenderer,
-                             new wxGridCellChoiceEditor);
-        }
-        else
-        {
-            return wxNOT_FOUND;
-        }
+        selectedCells = GetSelectionBlockTopLeft();
+        // non block selections may not have a bottom right
+        if ( GetSelectionBlockBottomRight().size() )
+            selectedCells.Add( GetSelectionBlockBottomRight()[ 0 ] );
 
 
-        // we get here only if just added the entry for this type, so return
-        // the last index
-        index = m_typeinfo.GetCount() - 1;
+        ClearSelection();
     }
 
     }
 
-    return index;
-}
+    // store user device origin
+    wxCoord userOriginX, userOriginY;
+    dc.GetDeviceOrigin( &userOriginX, &userOriginY );
 
 
-int wxGridTypeRegistry::FindOrCloneDataType(const wxString& typeName)
-{
-    int index = FindDataType(typeName);
-    if ( index == wxNOT_FOUND )
+    // store user scale
+    double scaleUserX, scaleUserY;
+    dc.GetUserScale( &scaleUserX, &scaleUserY );
+
+    // set defaults if necessary
+    wxGridCellCoords leftTop( topLeft ), rightBottom( bottomRight );
+    if ( leftTop.GetCol() < 0 )
+        leftTop.SetCol(0);
+    if ( leftTop.GetRow() < 0 )
+        leftTop.SetRow(0);
+    if ( rightBottom.GetCol() < 0 )
+        rightBottom.SetCol(GetNumberCols() - 1);
+    if ( rightBottom.GetRow() < 0 )
+        rightBottom.SetRow(GetNumberRows() - 1);
+
+    // get grid offset, size and cell parameters
+    wxPoint pointOffSet;
+    wxSize sizeGrid;
+    wxGridCellCoordsArray renderCells;
+    wxArrayInt arrayCols;
+    wxArrayInt arrayRows;
+
+    GetRenderSizes( leftTop, rightBottom,
+                    pointOffSet, sizeGrid,
+                    renderCells,
+                    arrayCols, arrayRows );
+
+    // add headers/labels to dimensions
+    if ( style & wxGRID_DRAW_ROWS_HEADER )
+        sizeGrid.x += GetRowLabelSize();
+    if ( style & wxGRID_DRAW_COLS_HEADER )
+        sizeGrid.y += GetColLabelSize();
+
+    // get render start position in logical units
+    wxPoint positionRender = GetRenderPosition( dc, position );
+
+    wxCoord originX = dc.LogicalToDeviceX( positionRender.x );
+    wxCoord originY = dc.LogicalToDeviceY( positionRender.y );
+
+    dc.SetDeviceOrigin( originX, originY );
+
+    SetRenderScale( dc, positionRender, size, sizeGrid );
+
+    // draw row headers at specified origin
+    if ( GetRowLabelSize() > 0 && ( style & wxGRID_DRAW_ROWS_HEADER ) )
     {
     {
-        // the first part of the typename is the "real" type, anything after ':'
-        // are the parameters for the renderer
-        index = FindDataType(typeName.BeforeFirst(_T(':')));
-        if ( index == wxNOT_FOUND )
+        if ( style & wxGRID_DRAW_COLS_HEADER )
         {
         {
-            return wxNOT_FOUND;
+            DrawCornerLabel( dc ); // do only if both col and row labels drawn
+            originY += dc.LogicalToDeviceYRel( GetColLabelSize() );
         }
 
         }
 
-        wxGridCellRenderer *renderer = GetRenderer(index);
-        wxGridCellRenderer *rendererOld = renderer;
-        renderer = renderer->Clone();
-        rendererOld->DecRef();
-
-        wxGridCellEditor *editor = GetEditor(index);
-        wxGridCellEditor *editorOld = editor;
-        editor = editor->Clone();
-        editorOld->DecRef();
+        originY -= dc.LogicalToDeviceYRel( pointOffSet.y );
+        dc.SetDeviceOrigin( originX, originY );
 
 
-        // do it even if there are no parameters to reset them to defaults
-        wxString params = typeName.AfterFirst(_T(':'));
-        renderer->SetParameters(params);
-        editor->SetParameters(params);
+        DrawRowLabels( dc, arrayRows );
 
 
-        // register the new typename
-        RegisterDataType(typeName, renderer, editor);
+        // reset for columns
+        if ( style & wxGRID_DRAW_COLS_HEADER )
+            originY -= dc.LogicalToDeviceYRel( GetColLabelSize() );
 
 
-        // we just registered it, it's the last one
-        index = m_typeinfo.GetCount() - 1;
+        originY += dc.LogicalToDeviceYRel( pointOffSet.y );
+        // X offset so we don't overwrite row labels
+        originX += dc.LogicalToDeviceXRel( GetRowLabelSize() );
     }
 
     }
 
-    return index;
-}
+    // subtract col offset where startcol > 0
+    originX -= dc.LogicalToDeviceXRel( pointOffSet.x );
+    // no y offset for col labels, they are at the Y origin
 
 
-wxGridCellRenderer* wxGridTypeRegistry::GetRenderer(int index)
-{
-    wxGridCellRenderer* renderer = m_typeinfo[index]->m_renderer;
-    renderer->IncRef();
-    return renderer;
-}
+    // draw column labels
+    if ( style & wxGRID_DRAW_COLS_HEADER )
+    {
+        dc.SetDeviceOrigin( originX, originY );
+        DrawColLabels( dc, arrayCols );
+        // don't overwrite the labels, increment originY
+        originY += dc.LogicalToDeviceYRel( GetColLabelSize() );
+    }
 
 
-wxGridCellEditor* wxGridTypeRegistry::GetEditor(int index)
-{
-    wxGridCellEditor* editor = m_typeinfo[index]->m_editor;
-    editor->IncRef();
-    return editor;
-}
+    // set device origin to draw grid cells and lines
+    originY -= dc.LogicalToDeviceYRel( pointOffSet.y );
+    dc.SetDeviceOrigin( originX, originY );
 
 
-// ----------------------------------------------------------------------------
-// wxGridTableBase
-// ----------------------------------------------------------------------------
+    // draw cell area background
+    dc.SetBrush( GetDefaultCellBackgroundColour() );
+    dc.SetPen( *wxTRANSPARENT_PEN );
+    // subtract headers from grid area dimensions
+    wxSize sizeCells( sizeGrid );
+    if ( style & wxGRID_DRAW_ROWS_HEADER )
+        sizeCells.x -= GetRowLabelSize();
+    if ( style & wxGRID_DRAW_COLS_HEADER )
+        sizeCells.y -= GetColLabelSize();
 
 
-IMPLEMENT_ABSTRACT_CLASS( wxGridTableBase, wxObject )
+    dc.DrawRectangle( pointOffSet, sizeCells );
 
 
+    // draw cells
+    DrawGridCellArea( dc, renderCells );
 
 
-wxGridTableBase::wxGridTableBase()
-{
-    m_view = (wxGrid *) NULL;
-    m_attrProvider = (wxGridCellAttrProvider *) NULL;
-}
+    // draw grid lines
+    if ( style & wxGRID_DRAW_CELL_LINES )
+    {
+        wxRegion regionClip( pointOffSet.x, pointOffSet.y,
+                             sizeCells.x, sizeCells.y );
 
 
-wxGridTableBase::~wxGridTableBase()
-{
-    delete m_attrProvider;
-}
+        DrawRangeGridLines(dc, regionClip, renderCells[0], renderCells.Last());
+    }
 
 
-void wxGridTableBase::SetAttrProvider(wxGridCellAttrProvider *attrProvider)
-{
-    delete m_attrProvider;
-    m_attrProvider = attrProvider;
-}
+    // draw render rectangle bounding lines
+    DoRenderBox( dc, style,
+                 pointOffSet, sizeCells,
+                 leftTop, rightBottom );
 
 
-bool wxGridTableBase::CanHaveAttributes()
-{
-    if ( ! GetAttrProvider() )
+    // restore user setings
+    dc.SetDeviceOrigin( userOriginX, userOriginY );
+    dc.SetUserScale( scaleUserX, scaleUserY );
+
+    if ( selectedCells.size() && !( style & wxGRID_DRAW_SELECTION ) )
     {
     {
-        // use the default attr provider by default
-        SetAttrProvider(new wxGridCellAttrProvider);
+        SelectBlock( selectedCells[ 0 ].GetRow(),
+                     selectedCells[ 0 ].GetCol(),
+                     selectedCells[ selectedCells.size() -1 ].GetRow(),
+                     selectedCells[ selectedCells.size() -1 ].GetCol() );
     }
     }
-    return TRUE;
 }
 
 }
 
-wxGridCellAttr *wxGridTableBase::GetAttr(int row, int col)
+void
+wxGrid::SetRenderScale(wxDC& dc,
+                       const wxPoint& pos, const wxSize& size,
+                       const wxSize& sizeGrid )
 {
 {
-    if ( m_attrProvider )
-        return m_attrProvider->GetAttr(row, col);
+    double scaleX, scaleY;
+    wxSize sizeTemp;
+
+    if ( size.GetWidth() != wxDefaultSize.GetWidth() ) // size.x was specified
+        sizeTemp.SetWidth( size.GetWidth() );
     else
     else
-        return (wxGridCellAttr *)NULL;
-}
+        sizeTemp.SetWidth( dc.DeviceToLogicalXRel( dc.GetSize().GetWidth() )
+                           - pos.x );
 
 
-void wxGridTableBase::SetAttr(wxGridCellAttr* attr, int row, int col)
-{
-    if ( m_attrProvider )
-    {
-        m_attrProvider->SetAttr(attr, row, col);
-    }
+    if ( size.GetHeight() != wxDefaultSize.GetHeight() ) // size.y was specified
+        sizeTemp.SetHeight( size.GetHeight() );
     else
     else
-    {
-        // as we take ownership of the pointer and don't store it, we must
-        // free it now
-        wxSafeDecRef(attr);
-    }
+        sizeTemp.SetHeight( dc.DeviceToLogicalYRel( dc.GetSize().GetHeight() )
+                            - pos.y );
+
+    scaleX = (double)( (double) sizeTemp.GetWidth() / (double) sizeGrid.GetWidth() );
+    scaleY = (double)( (double) sizeTemp.GetHeight() / (double) sizeGrid.GetHeight() );
+
+    dc.SetUserScale( wxMin( scaleX, scaleY), wxMin( scaleX, scaleY ) );
 }
 
 }
 
-void wxGridTableBase::SetRowAttr(wxGridCellAttr *attr, int row)
+// get grid rendered size, origin offset and fill cell arrays
+void wxGrid::GetRenderSizes( const wxGridCellCoords& topLeft,
+                             const wxGridCellCoords& bottomRight,
+                             wxPoint& pointOffSet, wxSize& sizeGrid,
+                             wxGridCellCoordsArray& renderCells,
+                             wxArrayInt& arrayCols, wxArrayInt& arrayRows )
 {
 {
-    if ( m_attrProvider )
+    pointOffSet.x = 0;
+    pointOffSet.y = 0;
+    sizeGrid.SetWidth( 0 );
+    sizeGrid.SetHeight( 0 );
+
+    int col, row;
+
+    wxGridSizesInfo sizeinfo = GetColSizes();
+    for ( col = 0; col <= bottomRight.GetCol(); col++ )
     {
     {
-        m_attrProvider->SetRowAttr(attr, row);
+        if ( col < topLeft.GetCol() )
+        {
+            pointOffSet.x += sizeinfo.GetSize( col );
+        }
+        else
+        {
+            for ( row = topLeft.GetRow(); row <= bottomRight.GetRow(); row++ )
+            {
+                renderCells.Add( wxGridCellCoords( row, col ));
+                arrayRows.Add( row ); // column labels rendered in DrawColLabels
+            }
+            arrayCols.Add( col ); // row labels rendered in DrawRowLabels
+            sizeGrid.x += sizeinfo.GetSize( col );
+        }
     }
     }
-    else
+
+    sizeinfo = GetRowSizes();
+    for ( row = 0; row <= bottomRight.GetRow(); row++ )
     {
     {
-        // as we take ownership of the pointer and don't store it, we must
-        // free it now
-        wxSafeDecRef(attr);
+        if ( row < topLeft.GetRow() )
+            pointOffSet.y += sizeinfo.GetSize( row );
+        else
+            sizeGrid.y += sizeinfo.GetSize( row );
     }
 }
 
     }
 }
 
-void wxGridTableBase::SetColAttr(wxGridCellAttr *attr, int col)
+// get render start position
+// if position not specified use dc draw extents MaxX and MaxY
+wxPoint wxGrid::GetRenderPosition( wxDC& dc, const wxPoint& position )
 {
 {
-    if ( m_attrProvider )
-    {
-        m_attrProvider->SetColAttr(attr, col);
-    }
-    else
+    wxPoint positionRender( position );
+
+    if ( !positionRender.IsFullySpecified() )
     {
     {
-        // as we take ownership of the pointer and don't store it, we must
-        // free it now
-        wxSafeDecRef(attr);
+        if ( positionRender.x == wxDefaultPosition.x )
+            positionRender.x = dc.MaxX();
+
+        if ( positionRender.y == wxDefaultPosition.y )
+            positionRender.y = dc.MaxY();
     }
     }
+
+    return positionRender;
 }
 
 }
 
-void wxGridTableBase::UpdateAttrRows( size_t pos, int numRows )
+// draw render rectangle bounding lines
+// useful where there is multi cell row or col clipping and no cell border
+void wxGrid::DoRenderBox( wxDC& dc, const int& style,
+                          const wxPoint& pointOffSet,
+                          const wxSize& sizeCells,
+                          const wxGridCellCoords& topLeft,
+                          const wxGridCellCoords& bottomRight )
 {
 {
-    if ( m_attrProvider )
+    if ( !( style & wxGRID_DRAW_BOX_RECT ) )
+        return;
+
+    int bottom = pointOffSet.y + sizeCells.GetY(),
+        right = pointOffSet.x + sizeCells.GetX() - 1;
+
+    // horiz top line if we are not drawing column header/labels
+    if ( !( style & wxGRID_DRAW_COLS_HEADER ) )
     {
     {
-        m_attrProvider->UpdateAttrRows( pos, numRows );
+        int left = pointOffSet.x;
+        left += ( style & wxGRID_DRAW_COLS_HEADER )
+                     ? - GetRowLabelSize() : 0;
+        dc.SetPen( GetRowGridLinePen( topLeft.GetRow() ) );
+        dc.DrawLine( left,
+                     pointOffSet.y,
+                     right,
+                     pointOffSet.y );
     }
     }
-}
 
 
-void wxGridTableBase::UpdateAttrCols( size_t pos, int numCols )
-{
-    if ( m_attrProvider )
+    // horiz bottom line
+    dc.SetPen( GetRowGridLinePen( bottomRight.GetRow() ) );
+    dc.DrawLine( pointOffSet.x, bottom - 1, right, bottom - 1 );
+
+    // left vertical line if we are not drawing row header/labels
+    if ( !( style & wxGRID_DRAW_ROWS_HEADER ) )
     {
     {
-        m_attrProvider->UpdateAttrCols( pos, numCols );
+        int top = pointOffSet.y;
+        top += ( style & wxGRID_DRAW_COLS_HEADER )
+                     ? - GetColLabelSize() : 0;
+        dc.SetPen( GetColGridLinePen( topLeft.GetCol() ) );
+        dc.DrawLine( pointOffSet.x -1,
+                     top,
+                     pointOffSet.x - 1,
+                     bottom - 1 );
     }
     }
+
+    // right vertical line
+    dc.SetPen( GetColGridLinePen( bottomRight.GetCol() ) );
+    dc.DrawLine( right, pointOffSet.y, right, bottom - 1 );
 }
 
 }
 
-bool wxGridTableBase::InsertRows( size_t pos, size_t numRows )
+void wxGridWindow::ScrollWindow( int dx, int dy, const wxRect *rect )
 {
 {
-    wxFAIL_MSG( wxT("Called grid table class function InsertRows\n"
-                    "but your derived table class does not override this function") );
-
-    return FALSE;
+    wxWindow::ScrollWindow( dx, dy, rect );
+    m_owner->GetGridRowLabelWindow()->ScrollWindow( 0, dy, rect );
+    m_owner->GetGridColLabelWindow()->ScrollWindow( dx, 0, rect );
 }
 
 }
 
-bool wxGridTableBase::AppendRows( size_t numRows )
+void wxGridWindow::OnMouseEvent( wxMouseEvent& event )
 {
 {
-    wxFAIL_MSG( wxT("Called grid table class function AppendRows\n"
-                    "but your derived table class does not override this function"));
+    if (event.ButtonDown(wxMOUSE_BTN_LEFT) && FindFocus() != this)
+        SetFocus();
 
 
-    return FALSE;
+    m_owner->ProcessGridCellMouseEvent( event );
 }
 
 }
 
-bool wxGridTableBase::DeleteRows( size_t pos, size_t numRows )
+void wxGridWindow::OnMouseWheel( wxMouseEvent& event )
 {
 {
-    wxFAIL_MSG( wxT("Called grid table class function DeleteRows\n"
-                    "but your derived table class does not override this function"));
-
-    return FALSE;
+    if (!m_owner->GetEventHandler()->ProcessEvent( event ))
+        event.Skip();
 }
 
 }
 
-bool wxGridTableBase::InsertCols( size_t pos, size_t numCols )
+// This seems to be required for wxMotif/wxGTK otherwise the mouse
+// cursor must be in the cell edit control to get key events
+//
+void wxGridWindow::OnKeyDown( wxKeyEvent& event )
 {
 {
-    wxFAIL_MSG( wxT("Called grid table class function InsertCols\n"
-                  "but your derived table class does not override this function"));
-
-    return FALSE;
+    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
+        event.Skip();
 }
 
 }
 
-bool wxGridTableBase::AppendCols( size_t numCols )
+void wxGridWindow::OnKeyUp( wxKeyEvent& event )
 {
 {
-    wxFAIL_MSG(wxT("Called grid table class function AppendCols\n"
-                   "but your derived table class does not override this function"));
-
-    return FALSE;
+    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
+        event.Skip();
 }
 
 }
 
-bool wxGridTableBase::DeleteCols( size_t pos, size_t numCols )
+void wxGridWindow::OnChar( wxKeyEvent& event )
 {
 {
-    wxFAIL_MSG( wxT("Called grid table class function DeleteCols\n"
-                    "but your derived table class does not override this function"));
-
-    return FALSE;
+    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
+        event.Skip();
 }
 
 }
 
-
-wxString wxGridTableBase::GetRowLabelValue( int row )
+void wxGridWindow::OnEraseBackground( wxEraseEvent& WXUNUSED(event) )
 {
 {
-    wxString s;
-    s << row + 1; // RD: Starting the rows at zero confuses users, no matter
-                  //     how much it makes sense to us geeks.
-    return s;
 }
 
 }
 
-wxString wxGridTableBase::GetColLabelValue( int col )
+void wxGridWindow::OnFocus(wxFocusEvent& event)
 {
 {
-    // default col labels are:
-    //   cols 0 to 25   : A-Z
-    //   cols 26 to 675 : AA-ZZ
-    //   etc.
-
-    wxString s;
-    unsigned int i, n;
-    for ( n = 1; ; n++ )
+    // and if we have any selection, it has to be repainted, because it
+    // uses different colour when the grid is not focused:
+    if ( m_owner->IsSelection() )
     {
     {
-        s += (_T('A') + (wxChar)( col%26 ));
-        col = col/26 - 1;
-        if ( col < 0 ) break;
+        Refresh();
     }
     }
-
-    // reverse the string...
-    wxString s2;
-    for ( i = 0;  i < n;  i++ )
+    else
     {
     {
-        s2 += s[n-i-1];
+        // NB: Note that this code is in "else" branch only because the other
+        //     branch refreshes everything and so there's no point in calling
+        //     Refresh() again, *not* because it should only be done if
+        //     !IsSelection(). If the above code is ever optimized to refresh
+        //     only selected area, this needs to be moved out of the "else"
+        //     branch so that it's always executed.
+
+        // current cell cursor {dis,re}appears on focus change:
+        const wxGridCellCoords cursorCoords(m_owner->GetGridCursorRow(),
+                                            m_owner->GetGridCursorCol());
+        const wxRect cursor =
+            m_owner->BlockToDeviceRect(cursorCoords, cursorCoords);
+        Refresh(true, &cursor);
     }
 
     }
 
-    return s2;
+    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
+        event.Skip();
 }
 
 }
 
+#define internalXToCol(x) XToCol(x, true)
+#define internalYToRow(y) YToRow(y, true)
 
 
-wxString wxGridTableBase::GetTypeName( int WXUNUSED(row), int WXUNUSED(col) )
-{
-    return wxGRID_VALUE_STRING;
-}
+/////////////////////////////////////////////////////////////////////
 
 
-bool wxGridTableBase::CanGetValueAs( int WXUNUSED(row), int WXUNUSED(col),
-                                     const wxString& typeName )
-{
-    return typeName == wxGRID_VALUE_STRING;
-}
+BEGIN_EVENT_TABLE( wxGrid, wxScrolledWindow )
+    EVT_PAINT( wxGrid::OnPaint )
+    EVT_SIZE( wxGrid::OnSize )
+    EVT_KEY_DOWN( wxGrid::OnKeyDown )
+    EVT_KEY_UP( wxGrid::OnKeyUp )
+    EVT_CHAR ( wxGrid::OnChar )
+    EVT_ERASE_BACKGROUND( wxGrid::OnEraseBackground )
+    EVT_COMMAND(wxID_ANY, wxEVT_GRID_HIDE_EDITOR, wxGrid::OnHideEditor )
+END_EVENT_TABLE()
 
 
-bool wxGridTableBase::CanSetValueAs( int row, int col, const wxString& typeName )
+bool wxGrid::Create(wxWindow *parent, wxWindowID id,
+                          const wxPoint& pos, const wxSize& size,
+                          long style, const wxString& name)
 {
 {
-    return CanGetValueAs(row, col, typeName);
-}
+    if (!wxScrolledWindow::Create(parent, id, pos, size,
+                                  style | wxWANTS_CHARS, name))
+        return false;
 
 
-long wxGridTableBase::GetValueAsLong( int WXUNUSED(row), int WXUNUSED(col) )
-{
-    return 0;
-}
+    m_colMinWidths = wxLongToLongHashMap(GRID_HASH_SIZE);
+    m_rowMinHeights = wxLongToLongHashMap(GRID_HASH_SIZE);
 
 
-double wxGridTableBase::GetValueAsDouble( int WXUNUSED(row), int WXUNUSED(col) )
-{
-    return 0.0;
-}
+    Create();
+    SetInitialSize(size);
+    CalcDimensions();
 
 
-bool wxGridTableBase::GetValueAsBool( int WXUNUSED(row), int WXUNUSED(col) )
-{
-    return FALSE;
+    return true;
 }
 
 }
 
-void wxGridTableBase::SetValueAsLong( int WXUNUSED(row), int WXUNUSED(col),
-                                      long WXUNUSED(value) )
+wxGrid::~wxGrid()
 {
 {
-}
+    if ( m_winCapture )
+        m_winCapture->ReleaseMouse();
 
 
-void wxGridTableBase::SetValueAsDouble( int WXUNUSED(row), int WXUNUSED(col),
-                                        double WXUNUSED(value) )
-{
-}
+    // Ensure that the editor control is destroyed before the grid is,
+    // otherwise we crash later when the editor tries to do something with the
+    // half destroyed grid
+    HideCellEditControl();
 
 
-void wxGridTableBase::SetValueAsBool( int WXUNUSED(row), int WXUNUSED(col),
-                                      bool WXUNUSED(value) )
-{
-}
+    // Must do this or ~wxScrollHelper will pop the wrong event handler
+    SetTargetWindow(this);
+    ClearAttrCache();
+    wxSafeDecRef(m_defaultCellAttr);
 
 
+#ifdef DEBUG_ATTR_CACHE
+    size_t total = gs_nAttrCacheHits + gs_nAttrCacheMisses;
+    wxPrintf(wxT("wxGrid attribute cache statistics: "
+                "total: %u, hits: %u (%u%%)\n"),
+             total, gs_nAttrCacheHits,
+             total ? (gs_nAttrCacheHits*100) / total : 0);
+#endif
 
 
-void* wxGridTableBase::GetValueAsCustom( int WXUNUSED(row), int WXUNUSED(col),
-                                         const wxString& WXUNUSED(typeName) )
-{
-    return NULL;
-}
+    // if we own the table, just delete it, otherwise at least don't leave it
+    // with dangling view pointer
+    if ( m_ownTable )
+        delete m_table;
+    else if ( m_table && m_table->GetView() == this )
+        m_table->SetView(NULL);
 
 
-void  wxGridTableBase::SetValueAsCustom( int WXUNUSED(row), int WXUNUSED(col),
-                                         const wxString& WXUNUSED(typeName),
-                                         void* WXUNUSED(value) )
-{
+    delete m_typeRegistry;
+    delete m_selection;
+
+    delete m_setFixedRows;
+    delete m_setFixedCols;
 }
 
 }
 
-//////////////////////////////////////////////////////////////////////
 //
 //
-// Message class for the grid table to send requests and notifications
-// to the grid view
+// ----- internal init and update functions
 //
 
 //
 
-wxGridTableMessage::wxGridTableMessage()
-{
-    m_table = (wxGridTableBase *) NULL;
-    m_id = -1;
-    m_comInt1 = -1;
-    m_comInt2 = -1;
-}
+// NOTE: If using the default visual attributes works everywhere then this can
+// be removed as well as the #else cases below.
+#define _USE_VISATTR 0
 
 
-wxGridTableMessage::wxGridTableMessage( wxGridTableBase *table, int id,
-                                        int commandInt1, int commandInt2 )
+void wxGrid::Create()
 {
 {
-    m_table = table;
-    m_id = id;
-    m_comInt1 = commandInt1;
-    m_comInt2 = commandInt2;
-}
+    // create the type registry
+    m_typeRegistry = new wxGridTypeRegistry;
 
 
+    m_cellEditCtrlEnabled = false;
 
 
+    m_defaultCellAttr = new wxGridCellAttr();
 
 
-//////////////////////////////////////////////////////////////////////
-//
-// A basic grid table for string data. An object of this class will
-// created by wxGrid if you don't specify an alternative table class.
-//
+    // Set default cell attributes
+    m_defaultCellAttr->SetDefAttr(m_defaultCellAttr);
+    m_defaultCellAttr->SetKind(wxGridCellAttr::Default);
+    m_defaultCellAttr->SetFont(GetFont());
+    m_defaultCellAttr->SetAlignment(wxALIGN_LEFT, wxALIGN_TOP);
+    m_defaultCellAttr->SetRenderer(new wxGridCellStringRenderer);
+    m_defaultCellAttr->SetEditor(new wxGridCellTextEditor);
 
 
-WX_DEFINE_OBJARRAY(wxGridStringArray)
+#if _USE_VISATTR
+    wxVisualAttributes gva = wxListBox::GetClassDefaultAttributes();
+    wxVisualAttributes lva = wxPanel::GetClassDefaultAttributes();
 
 
-IMPLEMENT_DYNAMIC_CLASS( wxGridStringTable, wxGridTableBase )
+    m_defaultCellAttr->SetTextColour(gva.colFg);
+    m_defaultCellAttr->SetBackgroundColour(gva.colBg);
 
 
-wxGridStringTable::wxGridStringTable()
-        : wxGridTableBase()
-{
-}
+#else
+    m_defaultCellAttr->SetTextColour(
+        wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT));
+    m_defaultCellAttr->SetBackgroundColour(
+        wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
+#endif
 
 
-wxGridStringTable::wxGridStringTable( int numRows, int numCols )
-        : wxGridTableBase()
-{
-    int row, col;
+    m_numRows = 0;
+    m_numCols = 0;
+    m_currentCellCoords = wxGridNoCellCoords;
 
 
-    m_data.Alloc( numRows );
+    // subwindow components that make up the wxGrid
+    m_rowLabelWin = new wxGridRowLabelWindow(this);
+    CreateColumnWindow();
+    m_cornerLabelWin = new wxGridCornerLabelWindow(this);
+    m_gridWin = new wxGridWindow( this );
 
 
-    wxArrayString sa;
-    sa.Alloc( numCols );
-    for ( col = 0;  col < numCols;  col++ )
-    {
-        sa.Add( wxEmptyString );
-    }
+    SetTargetWindow( m_gridWin );
 
 
-    for ( row = 0;  row < numRows;  row++ )
-    {
-        m_data.Add( sa );
-    }
-}
+#if _USE_VISATTR
+    wxColour gfg = gva.colFg;
+    wxColour gbg = gva.colBg;
+    wxColour lfg = lva.colFg;
+    wxColour lbg = lva.colBg;
+#else
+    wxColour gfg = wxSystemSettings::GetColour( wxSYS_COLOUR_WINDOWTEXT );
+    wxColour gbg = wxSystemSettings::GetColour( wxSYS_COLOUR_WINDOW );
+    wxColour lfg = wxSystemSettings::GetColour( wxSYS_COLOUR_WINDOWTEXT );
+    wxColour lbg = wxSystemSettings::GetColour( wxSYS_COLOUR_BTNFACE );
+#endif
 
 
-wxGridStringTable::~wxGridStringTable()
-{
-}
+    m_cornerLabelWin->SetOwnForegroundColour(lfg);
+    m_cornerLabelWin->SetOwnBackgroundColour(lbg);
+    m_rowLabelWin->SetOwnForegroundColour(lfg);
+    m_rowLabelWin->SetOwnBackgroundColour(lbg);
+    m_colWindow->SetOwnForegroundColour(lfg);
+    m_colWindow->SetOwnBackgroundColour(lbg);
+
+    m_gridWin->SetOwnForegroundColour(gfg);
+    m_gridWin->SetOwnBackgroundColour(gbg);
+
+    m_labelBackgroundColour = m_rowLabelWin->GetBackgroundColour();
+    m_labelTextColour = m_rowLabelWin->GetForegroundColour();
+
+    // now that we have the grid window, use its font to compute the default
+    // row height
+    m_defaultRowHeight = m_gridWin->GetCharHeight();
+#if defined(__WXMOTIF__) || defined(__WXGTK__)  // see also text ctrl sizing in ShowCellEditControl()
+    m_defaultRowHeight += 8;
+#else
+    m_defaultRowHeight += 4;
+#endif
 
 
-long wxGridStringTable::GetNumberRows()
-{
-    return m_data.GetCount();
 }
 
 }
 
-long wxGridStringTable::GetNumberCols()
+void wxGrid::CreateColumnWindow()
 {
 {
-    if ( m_data.GetCount() > 0 )
-        return m_data[0].GetCount();
-    else
-        return 0;
+    if ( m_useNativeHeader )
+    {
+        m_colWindow = new wxGridHeaderCtrl(this);
+        m_colLabelHeight = m_colWindow->GetBestSize().y;
+    }
+    else // draw labels ourselves
+    {
+        m_colWindow = new wxGridColLabelWindow(this);
+        m_colLabelHeight = WXGRID_DEFAULT_COL_LABEL_HEIGHT;
+    }
 }
 
 }
 
-wxString wxGridStringTable::GetValue( int row, int col )
+bool wxGrid::CreateGrid( int numRows, int numCols,
+                         wxGridSelectionModes selmode )
 {
 {
-    wxASSERT_MSG( (row < GetNumberRows()) && (col < GetNumberCols()),
-                  _T("invalid row or column index in wxGridStringTable") );
+    wxCHECK_MSG( !m_created,
+                 false,
+                 wxT("wxGrid::CreateGrid or wxGrid::SetTable called more than once") );
 
 
-    return m_data[row][col];
+    return SetTable(new wxGridStringTable(numRows, numCols), true, selmode);
 }
 
 }
 
-void wxGridStringTable::SetValue( int row, int col, const wxString& value )
+void wxGrid::SetSelectionMode(wxGridSelectionModes selmode)
 {
 {
-    wxASSERT_MSG( (row < GetNumberRows()) && (col < GetNumberCols()),
-                  _T("invalid row or column index in wxGridStringTable") );
+    wxCHECK_RET( m_created,
+                 wxT("Called wxGrid::SetSelectionMode() before calling CreateGrid()") );
 
 
-    m_data[row][col] = value;
+    m_selection->SetSelectionMode( selmode );
 }
 
 }
 
-bool wxGridStringTable::IsEmptyCell( int row, int col )
+wxGrid::wxGridSelectionModes wxGrid::GetSelectionMode() const
 {
 {
-    wxASSERT_MSG( (row < GetNumberRows()) && (col < GetNumberCols()),
-                  _T("invalid row or column index in wxGridStringTable") );
+    wxCHECK_MSG( m_created, wxGridSelectCells,
+                 wxT("Called wxGrid::GetSelectionMode() before calling CreateGrid()") );
 
 
-    return (m_data[row][col] == wxEmptyString);
+    return m_selection->GetSelectionMode();
 }
 
 }
 
-void wxGridStringTable::Clear()
+bool
+wxGrid::SetTable(wxGridTableBase *table,
+                 bool takeOwnership,
+                 wxGrid::wxGridSelectionModes selmode )
 {
 {
-    int row, col;
-    int numRows, numCols;
-
-    numRows = m_data.GetCount();
-    if ( numRows > 0 )
+    bool checkSelection = false;
+    if ( m_created )
     {
     {
-        numCols = m_data[0].GetCount();
+        // stop all processing
+        m_created = false;
 
 
-        for ( row = 0;  row < numRows;  row++ )
+        if (m_table)
         {
         {
-            for ( col = 0;  col < numCols;  col++ )
-            {
-                m_data[row][col] = wxEmptyString;
-            }
+            m_table->SetView(0);
+            if( m_ownTable )
+                delete m_table;
+            m_table = NULL;
         }
         }
-    }
-}
-
 
 
-bool wxGridStringTable::InsertRows( size_t pos, size_t numRows )
-{
-    size_t row, col;
+        wxDELETE(m_selection);
 
 
-    size_t curNumRows = m_data.GetCount();
-    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() : 0 );
+        m_ownTable = false;
+        m_numRows = 0;
+        m_numCols = 0;
+        checkSelection = true;
 
 
-    if ( pos >= curNumRows )
-    {
-        return AppendRows( numRows );
+        // kill row and column size arrays
+        m_colWidths.Empty();
+        m_colRights.Empty();
+        m_rowHeights.Empty();
+        m_rowBottoms.Empty();
     }
 
     }
 
-    wxArrayString sa;
-    sa.Alloc( curNumCols );
-    for ( col = 0;  col < curNumCols;  col++ )
+    if (table)
     {
     {
-        sa.Add( wxEmptyString );
-    }
+        m_numRows = table->GetNumberRows();
+        m_numCols = table->GetNumberCols();
 
 
-    for ( row = pos;  row < pos + numRows;  row++ )
-    {
-        m_data.Insert( sa, row );
-    }
-    UpdateAttrRows( pos, numRows );
-    if ( GetView() )
-    {
-        wxGridTableMessage msg( this,
-                                wxGRIDTABLE_NOTIFY_ROWS_INSERTED,
-                                pos,
-                                numRows );
+        if ( m_useNativeHeader )
+            GetGridColHeader()->SetColumnCount(m_numCols);
 
 
-        GetView()->ProcessTableMessage( msg );
+        m_table = table;
+        m_table->SetView( this );
+        m_ownTable = takeOwnership;
+        m_selection = new wxGridSelection( this, selmode );
+        if (checkSelection)
+        {
+            // If the newly set table is smaller than the
+            // original one current cell and selection regions
+            // might be invalid,
+            m_selectedBlockCorner = wxGridNoCellCoords;
+            m_currentCellCoords =
+              wxGridCellCoords(wxMin(m_numRows, m_currentCellCoords.GetRow()),
+                               wxMin(m_numCols, m_currentCellCoords.GetCol()));
+            if (m_selectedBlockTopLeft.GetRow() >= m_numRows ||
+                m_selectedBlockTopLeft.GetCol() >= m_numCols)
+            {
+                m_selectedBlockTopLeft = wxGridNoCellCoords;
+                m_selectedBlockBottomRight = wxGridNoCellCoords;
+            }
+            else
+                m_selectedBlockBottomRight =
+                  wxGridCellCoords(wxMin(m_numRows,
+                                         m_selectedBlockBottomRight.GetRow()),
+                                   wxMin(m_numCols,
+                                         m_selectedBlockBottomRight.GetCol()));
+        }
+        CalcDimensions();
+
+        m_created = true;
     }
 
     }
 
-    return TRUE;
+    InvalidateBestSize();
+
+    return m_created;
 }
 
 }
 
-bool wxGridStringTable::AppendRows( size_t numRows )
+void wxGrid::Init()
 {
 {
-    size_t row, col;
+    m_created = false;
 
 
-    size_t curNumRows = m_data.GetCount();
-    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() : 0 );
+    m_cornerLabelWin = NULL;
+    m_rowLabelWin = NULL;
+    m_colWindow = NULL;
+    m_gridWin = NULL;
 
 
-    wxArrayString sa;
-    if ( curNumCols > 0 )
-    {
-        sa.Alloc( curNumCols );
-        for ( col = 0;  col < curNumCols;  col++ )
-        {
-            sa.Add( wxEmptyString );
-        }
-    }
+    m_table = NULL;
+    m_ownTable = false;
 
 
-    for ( row = 0;  row < numRows;  row++ )
-    {
-        m_data.Add( sa );
-    }
+    m_selection = NULL;
+    m_defaultCellAttr = NULL;
+    m_typeRegistry = NULL;
+    m_winCapture = NULL;
 
 
-    if ( GetView() )
-    {
-        wxGridTableMessage msg( this,
-                                wxGRIDTABLE_NOTIFY_ROWS_APPENDED,
-                                numRows );
+    m_rowLabelWidth  = WXGRID_DEFAULT_ROW_LABEL_WIDTH;
+    m_colLabelHeight = WXGRID_DEFAULT_COL_LABEL_HEIGHT;
 
 
-        GetView()->ProcessTableMessage( msg );
-    }
+    m_setFixedRows =
+    m_setFixedCols = NULL;
 
 
-    return TRUE;
-}
+    // init attr cache
+    m_attrCache.row = -1;
+    m_attrCache.col = -1;
+    m_attrCache.attr = NULL;
 
 
-bool wxGridStringTable::DeleteRows( size_t pos, size_t numRows )
-{
-    size_t n;
+    m_labelFont = GetFont();
+    m_labelFont.SetWeight( wxBOLD );
 
 
-    size_t curNumRows = m_data.GetCount();
+    m_rowLabelHorizAlign = wxALIGN_CENTRE;
+    m_rowLabelVertAlign  = wxALIGN_CENTRE;
 
 
-    if ( pos >= curNumRows )
-    {
-        wxString errmsg;
-        errmsg.Printf("Called wxGridStringTable::DeleteRows(pos=%d, N=%d)\n"
-                      "Pos value is invalid for present table with %d rows",
-                      pos, numRows, curNumRows );
-        wxFAIL_MSG( wxT(errmsg) );
-        return FALSE;
-    }
+    m_colLabelHorizAlign = wxALIGN_CENTRE;
+    m_colLabelVertAlign  = wxALIGN_CENTRE;
+    m_colLabelTextOrientation = wxHORIZONTAL;
 
 
-    if ( numRows > curNumRows - pos )
-    {
-        numRows = curNumRows - pos;
-    }
+    m_defaultColWidth  = WXGRID_DEFAULT_COL_WIDTH;
+    m_defaultRowHeight = 0; // this will be initialized after creation
 
 
-    if ( numRows >= curNumRows )
-    {
-        m_data.Empty();  // don't release memory just yet
-    }
-    else
-    {
-        for ( n = 0;  n < numRows;  n++ )
-        {
-            m_data.Remove( pos );
-        }
-    }
-    UpdateAttrRows( pos, -((int)numRows) );
-    if ( GetView() )
-    {
-        wxGridTableMessage msg( this,
-                                wxGRIDTABLE_NOTIFY_ROWS_DELETED,
-                                pos,
-                                numRows );
+    m_minAcceptableColWidth  = WXGRID_MIN_COL_WIDTH;
+    m_minAcceptableRowHeight = WXGRID_MIN_ROW_HEIGHT;
 
 
-        GetView()->ProcessTableMessage( msg );
-    }
+    m_gridLineColour = wxColour( 192,192,192 );
+    m_gridLinesEnabled = true;
+    m_gridLinesClipHorz =
+    m_gridLinesClipVert = true;
+    m_cellHighlightColour = *wxBLACK;
+    m_cellHighlightPenWidth = 2;
+    m_cellHighlightROPenWidth = 1;
 
 
-    return TRUE;
-}
+    m_canDragColMove = false;
 
 
-bool wxGridStringTable::InsertCols( size_t pos, size_t numCols )
-{
-    size_t row, col;
+    m_cursorMode  = WXGRID_CURSOR_SELECT_CELL;
+    m_winCapture = NULL;
+    m_canDragRowSize = true;
+    m_canDragColSize = true;
+    m_canDragGridSize = true;
+    m_canDragCell = false;
+    m_dragLastPos  = -1;
+    m_dragRowOrCol = -1;
+    m_isDragging = false;
+    m_startDragPos = wxDefaultPosition;
 
 
-    size_t curNumRows = m_data.GetCount();
-    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() : 0 );
+    m_sortCol = wxNOT_FOUND;
+    m_sortIsAscending = true;
 
 
-    if ( pos >= curNumCols )
-    {
-        return AppendCols( numCols );
-    }
+    m_useNativeHeader =
+    m_nativeColumnLabels = false;
 
 
-    for ( row = 0;  row < curNumRows;  row++ )
-    {
-        for ( col = pos;  col < pos + numCols;  col++ )
-        {
-            m_data[row].Insert( wxEmptyString, col );
-        }
-    }
-    UpdateAttrCols( pos, numCols );
-    if ( GetView() )
-    {
-        wxGridTableMessage msg( this,
-                                wxGRIDTABLE_NOTIFY_COLS_INSERTED,
-                                pos,
-                                numCols );
+    m_waitForSlowClick = false;
 
 
-        GetView()->ProcessTableMessage( msg );
-    }
+    m_rowResizeCursor = wxCursor( wxCURSOR_SIZENS );
+    m_colResizeCursor = wxCursor( wxCURSOR_SIZEWE );
 
 
-    return TRUE;
-}
+    m_currentCellCoords = wxGridNoCellCoords;
 
 
-bool wxGridStringTable::AppendCols( size_t numCols )
-{
-    size_t row, n;
+    m_selectedBlockTopLeft =
+    m_selectedBlockBottomRight =
+    m_selectedBlockCorner = wxGridNoCellCoords;
 
 
-    size_t curNumRows = m_data.GetCount();
-    if ( !curNumRows )
-    {
-        // TODO: something better than this ?
-        //
-        wxFAIL_MSG( wxT("Unable to append cols to a grid table with no rows.\n"
-                        "Call AppendRows() first") );
-        return FALSE;
-    }
+    m_selectionBackground = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
+    m_selectionForeground = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
 
 
-    for ( row = 0;  row < curNumRows;  row++ )
-    {
-        for ( n = 0;  n < numCols;  n++ )
-        {
-            m_data[row].Add( wxEmptyString );
-        }
-    }
+    m_editable = true;  // default for whole grid
 
 
-    if ( GetView() )
-    {
-        wxGridTableMessage msg( this,
-                                wxGRIDTABLE_NOTIFY_COLS_APPENDED,
-                                numCols );
+    m_inOnKeyDown = false;
+    m_batchCount = 0;
 
 
-        GetView()->ProcessTableMessage( msg );
-    }
+    m_extraWidth =
+    m_extraHeight = 0;
 
 
-    return TRUE;
+    // we can't call SetScrollRate() as the window isn't created yet but OTOH
+    // we don't need to call it neither as the scroll position is (0, 0) right
+    // now anyhow, so just set the parameters directly
+    m_xScrollPixelsPerLine = GRID_SCROLL_LINE_X;
+    m_yScrollPixelsPerLine = GRID_SCROLL_LINE_Y;
+
+    m_tabBehaviour = Tab_Stop;
 }
 
 }
 
-bool wxGridStringTable::DeleteCols( size_t pos, size_t numCols )
-{
-    size_t row, n;
+// ----------------------------------------------------------------------------
+// the idea is to call these functions only when necessary because they create
+// quite big arrays which eat memory mostly unnecessary - in particular, if
+// default widths/heights are used for all rows/columns, we may not use these
+// arrays at all
+//
+// with some extra code, it should be possible to only store the widths/heights
+// different from default ones (resulting in space savings for huge grids) but
+// this is not done currently
+// ----------------------------------------------------------------------------
 
 
-    size_t curNumRows = m_data.GetCount();
-    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() : 0 );
+void wxGrid::InitRowHeights()
+{
+    m_rowHeights.Empty();
+    m_rowBottoms.Empty();
 
 
-    if ( pos >= curNumCols )
-    {
-        wxString errmsg;
-        errmsg.Printf( "Called wxGridStringTable::DeleteCols(pos=%d, N=%d)...\n"
-                        "Pos value is invalid for present table with %d cols",
-                        pos, numCols, curNumCols );
-        wxFAIL_MSG( wxT( errmsg ) );
-        return FALSE;
-    }
+    m_rowHeights.Alloc( m_numRows );
+    m_rowBottoms.Alloc( m_numRows );
 
 
-    if ( numCols > curNumCols - pos )
-    {
-        numCols = curNumCols - pos;
-    }
+    m_rowHeights.Add( m_defaultRowHeight, m_numRows );
 
 
-    for ( row = 0;  row < curNumRows;  row++ )
-    {
-        if ( numCols >= curNumCols )
-        {
-            m_data[row].Clear();
-        }
-        else
-        {
-            for ( n = 0;  n < numCols;  n++ )
-            {
-                m_data[row].Remove( pos );
-            }
-        }
-    }
-    UpdateAttrCols( pos, -((int)numCols) );
-    if ( GetView() )
+    int rowBottom = 0;
+    for ( int i = 0; i < m_numRows; i++ )
     {
     {
-        wxGridTableMessage msg( this,
-                                wxGRIDTABLE_NOTIFY_COLS_DELETED,
-                                pos,
-                                numCols );
-
-        GetView()->ProcessTableMessage( msg );
+        rowBottom += m_defaultRowHeight;
+        m_rowBottoms.Add( rowBottom );
     }
     }
-
-    return TRUE;
 }
 
 }
 
-wxString wxGridStringTable::GetRowLabelValue( int row )
+void wxGrid::InitColWidths()
 {
 {
-    if ( row > (int)(m_rowLabels.GetCount()) - 1 )
-    {
-        // using default label
-        //
-        return wxGridTableBase::GetRowLabelValue( row );
-    }
-    else
-    {
-        return m_rowLabels[ row ];
-    }
-}
+    m_colWidths.Empty();
+    m_colRights.Empty();
 
 
-wxString wxGridStringTable::GetColLabelValue( int col )
-{
-    if ( col > (int)(m_colLabels.GetCount()) - 1 )
-    {
-        // using default label
-        //
-        return wxGridTableBase::GetColLabelValue( col );
-    }
-    else
+    m_colWidths.Alloc( m_numCols );
+    m_colRights.Alloc( m_numCols );
+
+    m_colWidths.Add( m_defaultColWidth, m_numCols );
+
+    for ( int i = 0; i < m_numCols; i++ )
     {
     {
-        return m_colLabels[ col ];
+        int colRight = ( GetColPos( i ) + 1 ) * m_defaultColWidth;
+        m_colRights.Add( colRight );
     }
 }
 
     }
 }
 
-void wxGridStringTable::SetRowLabelValue( int row, const wxString& value )
+int wxGrid::GetColWidth(int col) const
 {
 {
-    if ( row > (int)(m_rowLabels.GetCount()) - 1 )
-    {
-        int n = m_rowLabels.GetCount();
-        int i;
-        for ( i = n;  i <= row;  i++ )
-        {
-            m_rowLabels.Add( wxGridTableBase::GetRowLabelValue(i) );
-        }
-    }
+    if ( m_colWidths.IsEmpty() )
+        return m_defaultColWidth;
 
 
-    m_rowLabels[row] = value;
+    // a negative width indicates a hidden column
+    return m_colWidths[col] > 0 ? m_colWidths[col] : 0;
 }
 
 }
 
-void wxGridStringTable::SetColLabelValue( int col, const wxString& value )
+int wxGrid::GetColLeft(int col) const
 {
 {
-    if ( col > (int)(m_colLabels.GetCount()) - 1 )
-    {
-        int n = m_colLabels.GetCount();
-        int i;
-        for ( i = n;  i <= col;  i++ )
-        {
-            m_colLabels.Add( wxGridTableBase::GetColLabelValue(i) );
-        }
-    }
+    if ( m_colRights.IsEmpty() )
+        return GetColPos( col ) * m_defaultColWidth;
 
 
-    m_colLabels[col] = value;
+    return m_colRights[col] - GetColWidth(col);
 }
 
 }
 
-
-
-//////////////////////////////////////////////////////////////////////
-//////////////////////////////////////////////////////////////////////
-
-IMPLEMENT_DYNAMIC_CLASS( wxGridRowLabelWindow, wxWindow )
-
-BEGIN_EVENT_TABLE( wxGridRowLabelWindow, wxWindow )
-    EVT_PAINT( wxGridRowLabelWindow::OnPaint )
-    EVT_MOUSE_EVENTS( wxGridRowLabelWindow::OnMouseEvent )
-    EVT_KEY_DOWN( wxGridRowLabelWindow::OnKeyDown )
-END_EVENT_TABLE()
-
-wxGridRowLabelWindow::wxGridRowLabelWindow( wxGrid *parent,
-                                            wxWindowID id,
-                                            const wxPoint &pos, const wxSize &size )
-  : wxWindow( parent, id, pos, size, wxWANTS_CHARS )
+int wxGrid::GetColRight(int col) const
 {
 {
-    m_owner = parent;
+    return m_colRights.IsEmpty() ? (GetColPos( col ) + 1) * m_defaultColWidth
+                                 : m_colRights[col];
 }
 
 }
 
-void wxGridRowLabelWindow::OnPaint( wxPaintEvent &event )
+int wxGrid::GetRowHeight(int row) const
 {
 {
-    wxPaintDC dc(this);
-
-    // NO - don't do this because it will set both the x and y origin
-    // coords to match the parent scrolled window and we just want to
-    // set the y coord  - MB
-    //
-    // m_owner->PrepareDC( dc );
-
-    int x, y;
-    m_owner->CalcUnscrolledPosition( 0, 0, &x, &y );
-    dc.SetDeviceOrigin( 0, -y );
+    // no custom heights / hidden rows
+    if ( m_rowHeights.IsEmpty() )
+        return m_defaultRowHeight;
 
 
-    m_owner->CalcRowLabelsExposed( GetUpdateRegion() );
-    m_owner->DrawRowLabels( dc );
+    // a negative height indicates a hidden row
+    return m_rowHeights[row] > 0 ? m_rowHeights[row] : 0;
 }
 
 }
 
-
-void wxGridRowLabelWindow::OnMouseEvent( wxMouseEvent& event )
+int wxGrid::GetRowTop(int row) const
 {
 {
-    m_owner->ProcessRowLabelMouseEvent( event );
-}
+    if ( m_rowBottoms.IsEmpty() )
+        return row * m_defaultRowHeight;
 
 
+    return m_rowBottoms[row] - GetRowHeight(row);
+}
 
 
-// This seems to be required for wxMotif otherwise the mouse
-// cursor must be in the cell edit control to get key events
-//
-void wxGridRowLabelWindow::OnKeyDown( wxKeyEvent& event )
+int wxGrid::GetRowBottom(int row) const
 {
 {
-    if ( !m_owner->ProcessEvent( event ) ) event.Skip();
+    return m_rowBottoms.IsEmpty() ? (row + 1) * m_defaultRowHeight
+                                  : m_rowBottoms[row];
 }
 
 }
 
+void wxGrid::CalcDimensions()
+{
+    // compute the size of the scrollable area
+    int w = m_numCols > 0 ? GetColRight(GetColAt(m_numCols - 1)) : 0;
+    int h = m_numRows > 0 ? GetRowBottom(m_numRows - 1) : 0;
+
+    w += m_extraWidth;
+    h += m_extraHeight;
+
+    // take into account editor if shown
+    if ( IsCellEditControlShown() )
+    {
+        int w2, h2;
+        int r = m_currentCellCoords.GetRow();
+        int c = m_currentCellCoords.GetCol();
+        int x = GetColLeft(c);
+        int y = GetRowTop(r);
+
+        // how big is the editor
+        wxGridCellAttr* attr = GetCellAttr(r, c);
+        wxGridCellEditor* editor = attr->GetEditor(this, r, c);
+        editor->GetControl()->GetSize(&w2, &h2);
+        w2 += x;
+        h2 += y;
+        if ( w2 > w )
+            w = w2;
+        if ( h2 > h )
+            h = h2;
+        editor->DecRef();
+        attr->DecRef();
+    }
 
 
+    // preserve (more or less) the previous position
+    int x, y;
+    GetViewStart( &x, &y );
 
 
-//////////////////////////////////////////////////////////////////////
-
-IMPLEMENT_DYNAMIC_CLASS( wxGridColLabelWindow, wxWindow )
+    // ensure the position is valid for the new scroll ranges
+    if ( x >= w )
+        x = wxMax( w - 1, 0 );
+    if ( y >= h )
+        y = wxMax( h - 1, 0 );
 
 
-BEGIN_EVENT_TABLE( wxGridColLabelWindow, wxWindow )
-    EVT_PAINT( wxGridColLabelWindow::OnPaint )
-    EVT_MOUSE_EVENTS( wxGridColLabelWindow::OnMouseEvent )
-    EVT_KEY_DOWN( wxGridColLabelWindow::OnKeyDown )
-END_EVENT_TABLE()
+    // update the virtual size and refresh the scrollbars to reflect it
+    m_gridWin->SetVirtualSize(w, h);
+    Scroll(x, y);
+    AdjustScrollbars();
 
 
-wxGridColLabelWindow::wxGridColLabelWindow( wxGrid *parent,
-                                            wxWindowID id,
-                                            const wxPoint &pos, const wxSize &size )
-  : wxWindow( parent, id, pos, size, wxWANTS_CHARS )
-{
-    m_owner = parent;
+    // if our OnSize() hadn't been called (it would if we have scrollbars), we
+    // still must reposition the children
+    CalcWindowSizes();
 }
 
 }
 
-void wxGridColLabelWindow::OnPaint( wxPaintEvent &event )
+wxSize wxGrid::GetSizeAvailableForScrollTarget(const wxSize& size)
 {
 {
-    wxPaintDC dc(this);
-
-    // NO - don't do this because it will set both the x and y origin
-    // coords to match the parent scrolled window and we just want to
-    // set the x coord  - MB
-    //
-    // m_owner->PrepareDC( dc );
-
-    int x, y;
-    m_owner->CalcUnscrolledPosition( 0, 0, &x, &y );
-    dc.SetDeviceOrigin( -x, 0 );
+    wxSize sizeGridWin(size);
+    sizeGridWin.x -= m_rowLabelWidth;
+    sizeGridWin.y -= m_colLabelHeight;
 
 
-    m_owner->CalcColLabelsExposed( GetUpdateRegion() );
-    m_owner->DrawColLabels( dc );
+    return sizeGridWin;
 }
 
 }
 
-
-void wxGridColLabelWindow::OnMouseEvent( wxMouseEvent& event )
+void wxGrid::CalcWindowSizes()
 {
 {
-    m_owner->ProcessColLabelMouseEvent( event );
-}
-
+    // escape if the window is has not been fully created yet
 
 
-// This seems to be required for wxMotif otherwise the mouse
-// cursor must be in the cell edit control to get key events
-//
-void wxGridColLabelWindow::OnKeyDown( wxKeyEvent& event )
-{
-    if ( !m_owner->ProcessEvent( event ) ) event.Skip();
-}
+    if ( m_cornerLabelWin == NULL )
+        return;
 
 
+    int cw, ch;
+    GetClientSize( &cw, &ch );
 
 
+    // the grid may be too small to have enough space for the labels yet, don't
+    // size the windows to negative sizes in this case
+    int gw = cw - m_rowLabelWidth;
+    int gh = ch - m_colLabelHeight;
+    if (gw < 0)
+        gw = 0;
+    if (gh < 0)
+        gh = 0;
 
 
-//////////////////////////////////////////////////////////////////////
+    if ( m_cornerLabelWin && m_cornerLabelWin->IsShown() )
+        m_cornerLabelWin->SetSize( 0, 0, m_rowLabelWidth, m_colLabelHeight );
 
 
-IMPLEMENT_DYNAMIC_CLASS( wxGridCornerLabelWindow, wxWindow )
+    if ( m_colWindow && m_colWindow->IsShown() )
+        m_colWindow->SetSize( m_rowLabelWidth, 0, gw, m_colLabelHeight );
 
 
-BEGIN_EVENT_TABLE( wxGridCornerLabelWindow, wxWindow )
-    EVT_MOUSE_EVENTS( wxGridCornerLabelWindow::OnMouseEvent )
-    EVT_PAINT( wxGridCornerLabelWindow::OnPaint)
-    EVT_KEY_DOWN( wxGridCornerLabelWindow::OnKeyDown )
-END_EVENT_TABLE()
+    if ( m_rowLabelWin && m_rowLabelWin->IsShown() )
+        m_rowLabelWin->SetSize( 0, m_colLabelHeight, m_rowLabelWidth, gh );
 
 
-wxGridCornerLabelWindow::wxGridCornerLabelWindow( wxGrid *parent,
-                                                  wxWindowID id,
-                                                  const wxPoint &pos, const wxSize &size )
-  : wxWindow( parent, id, pos, size, wxWANTS_CHARS )
-{
-    m_owner = parent;
+    if ( m_gridWin && m_gridWin->IsShown() )
+        m_gridWin->SetSize( m_rowLabelWidth, m_colLabelHeight, gw, gh );
 }
 
 }
 
-void wxGridCornerLabelWindow::OnPaint( wxPaintEvent& WXUNUSED(event) )
+// this is called when the grid table sends a message
+// to indicate that it has been redimensioned
+//
+bool wxGrid::Redimension( wxGridTableMessage& msg )
 {
 {
-    wxPaintDC dc(this);
-
-    int client_height = 0;
-    int client_width = 0;
-    GetClientSize( &client_width, &client_height );
-
-    dc.SetPen( *wxBLACK_PEN );
-    dc.DrawLine( client_width-1, client_height-1, client_width-1, 0 );
-    dc.DrawLine( client_width-1, client_height-1, 0, client_height-1 );
+    int i;
+    bool result = false;
 
 
-    dc.SetPen( *wxWHITE_PEN );
-    dc.DrawLine( 0, 0, client_width, 0 );
-    dc.DrawLine( 0, 0, 0, client_height );
-}
+    // Clear the attribute cache as the attribute might refer to a different
+    // cell than stored in the cache after adding/removing rows/columns.
+    ClearAttrCache();
 
 
+    // By the same reasoning, the editor should be dismissed if columns are
+    // added or removed. And for consistency, it should IMHO always be
+    // removed, not only if the cell "underneath" it actually changes.
+    // For now, I intentionally do not save the editor's content as the
+    // cell it might want to save that stuff to might no longer exist.
+    HideCellEditControl();
 
 
-void wxGridCornerLabelWindow::OnMouseEvent( wxMouseEvent& event )
-{
-    m_owner->ProcessCornerLabelMouseEvent( event );
-}
+    switch ( msg.GetId() )
+    {
+        case wxGRIDTABLE_NOTIFY_ROWS_INSERTED:
+        {
+            size_t pos = msg.GetCommandInt();
+            int numRows = msg.GetCommandInt2();
 
 
+            m_numRows += numRows;
 
 
-// This seems to be required for wxMotif otherwise the mouse
-// cursor must be in the cell edit control to get key events
-//
-void wxGridCornerLabelWindow::OnKeyDown( wxKeyEvent& event )
-{
-    if ( !m_owner->ProcessEvent( event ) ) event.Skip();
-}
+            if ( !m_rowHeights.IsEmpty() )
+            {
+                m_rowHeights.Insert( m_defaultRowHeight, pos, numRows );
+                m_rowBottoms.Insert( 0, pos, numRows );
 
 
+                int bottom = 0;
+                if ( pos > 0 )
+                    bottom = m_rowBottoms[pos - 1];
 
 
+                for ( i = pos; i < m_numRows; i++ )
+                {
+                    bottom += m_rowHeights[i];
+                    m_rowBottoms[i] = bottom;
+                }
+            }
 
 
-//////////////////////////////////////////////////////////////////////
+            if ( m_currentCellCoords == wxGridNoCellCoords )
+            {
+                // if we have just inserted cols into an empty grid the current
+                // cell will be undefined...
+                //
+                SetCurrentCell( 0, 0 );
+            }
 
 
-IMPLEMENT_DYNAMIC_CLASS( wxGridWindow, wxPanel )
+            if ( m_selection )
+                m_selection->UpdateRows( pos, numRows );
+            wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider();
+            if (attrProvider)
+                attrProvider->UpdateAttrRows( pos, numRows );
 
 
-BEGIN_EVENT_TABLE( wxGridWindow, wxPanel )
-    EVT_PAINT( wxGridWindow::OnPaint )
-    EVT_MOUSE_EVENTS( wxGridWindow::OnMouseEvent )
-    EVT_KEY_DOWN( wxGridWindow::OnKeyDown )
-    EVT_ERASE_BACKGROUND( wxGridWindow::OnEraseBackground )
-END_EVENT_TABLE()
+            if ( !GetBatchCount() )
+            {
+                CalcDimensions();
+                m_rowLabelWin->Refresh();
+            }
+        }
+        result = true;
+        break;
 
 
-wxGridWindow::wxGridWindow( wxGrid *parent,
-                            wxGridRowLabelWindow *rowLblWin,
-                            wxGridColLabelWindow *colLblWin,
-                            wxWindowID id, const wxPoint &pos, const wxSize &size )
-        : wxPanel( parent, id, pos, size, wxWANTS_CHARS, "grid window" )
-{
-    m_owner = parent;
-    m_rowLabelWin = rowLblWin;
-    m_colLabelWin = colLblWin;
-    SetBackgroundColour( "WHITE" );
-}
+        case wxGRIDTABLE_NOTIFY_ROWS_APPENDED:
+        {
+            int numRows = msg.GetCommandInt();
+            int oldNumRows = m_numRows;
+            m_numRows += numRows;
 
 
+            if ( !m_rowHeights.IsEmpty() )
+            {
+                m_rowHeights.Add( m_defaultRowHeight, numRows );
+                m_rowBottoms.Add( 0, numRows );
 
 
-wxGridWindow::~wxGridWindow()
-{
-}
+                int bottom = 0;
+                if ( oldNumRows > 0 )
+                    bottom = m_rowBottoms[oldNumRows - 1];
 
 
+                for ( i = oldNumRows; i < m_numRows; i++ )
+                {
+                    bottom += m_rowHeights[i];
+                    m_rowBottoms[i] = bottom;
+                }
+            }
 
 
-void wxGridWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
-{
-    wxPaintDC dc( this );
-    m_owner->PrepareDC( dc );
-    wxRegion reg = GetUpdateRegion();
-    m_owner->CalcCellsExposed( reg );
-    m_owner->DrawGridCellArea( dc );
-#if WXGRID_DRAW_LINES
-    m_owner->DrawAllGridLines( dc, reg );
+            if ( m_currentCellCoords == wxGridNoCellCoords )
+            {
+                // if we have just inserted cols into an empty grid the current
+                // cell will be undefined...
+                //
+                SetCurrentCell( 0, 0 );
+            }
+
+            if ( !GetBatchCount() )
+            {
+                CalcDimensions();
+                m_rowLabelWin->Refresh();
+            }
+        }
+        result = true;
+        break;
+
+        case wxGRIDTABLE_NOTIFY_ROWS_DELETED:
+        {
+            size_t pos = msg.GetCommandInt();
+            int numRows = msg.GetCommandInt2();
+            m_numRows -= numRows;
+
+            if ( !m_rowHeights.IsEmpty() )
+            {
+                m_rowHeights.RemoveAt( pos, numRows );
+                m_rowBottoms.RemoveAt( pos, numRows );
+
+                int h = 0;
+                for ( i = 0; i < m_numRows; i++ )
+                {
+                    h += m_rowHeights[i];
+                    m_rowBottoms[i] = h;
+                }
+            }
+
+            if ( !m_numRows )
+            {
+                m_currentCellCoords = wxGridNoCellCoords;
+            }
+            else
+            {
+                if ( m_currentCellCoords.GetRow() >= m_numRows )
+                    m_currentCellCoords.Set( 0, 0 );
+            }
+
+            if ( m_selection )
+                m_selection->UpdateRows( pos, -((int)numRows) );
+            wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider();
+            if (attrProvider)
+            {
+                attrProvider->UpdateAttrRows( pos, -((int)numRows) );
+
+// ifdef'd out following patch from Paul Gammans
+#if 0
+                // No need to touch column attributes, unless we
+                // removed _all_ rows, in this case, we remove
+                // all column attributes.
+                // I hate to do this here, but the
+                // needed data is not available inside UpdateAttrRows.
+                if ( !GetNumberRows() )
+                    attrProvider->UpdateAttrCols( 0, -GetNumberCols() );
 #endif
 #endif
-    m_owner->DrawGridSpace( dc );
-    m_owner->DrawHighlight( dc );
-}
+            }
 
 
+            if ( !GetBatchCount() )
+            {
+                CalcDimensions();
+                m_rowLabelWin->Refresh();
+            }
+        }
+        result = true;
+        break;
 
 
-void wxGridWindow::ScrollWindow( int dx, int dy, const wxRect *rect )
+        case wxGRIDTABLE_NOTIFY_COLS_INSERTED:
+        {
+            size_t pos = msg.GetCommandInt();
+            int numCols = msg.GetCommandInt2();
+            m_numCols += numCols;
+
+            if ( m_useNativeHeader )
+                GetGridColHeader()->SetColumnCount(m_numCols);
+
+            if ( !m_colAt.IsEmpty() )
+            {
+                //Shift the column IDs
+                for ( i = 0; i < m_numCols - numCols; i++ )
+                {
+                    if ( m_colAt[i] >= (int)pos )
+                        m_colAt[i] += numCols;
+                }
+
+                m_colAt.Insert( pos, pos, numCols );
+
+                //Set the new columns' positions
+                for ( i = pos + 1; i < (int)pos + numCols; i++ )
+                {
+                    m_colAt[i] = i;
+                }
+            }
+
+            if ( !m_colWidths.IsEmpty() )
+            {
+                m_colWidths.Insert( m_defaultColWidth, pos, numCols );
+                m_colRights.Insert( 0, pos, numCols );
+
+                int right = 0;
+                if ( pos > 0 )
+                    right = m_colRights[GetColAt( pos - 1 )];
+
+                int colPos;
+                for ( colPos = pos; colPos < m_numCols; colPos++ )
+                {
+                    i = GetColAt( colPos );
+
+                    right += m_colWidths[i];
+                    m_colRights[i] = right;
+                }
+            }
+
+            if ( m_currentCellCoords == wxGridNoCellCoords )
+            {
+                // if we have just inserted cols into an empty grid the current
+                // cell will be undefined...
+                //
+                SetCurrentCell( 0, 0 );
+            }
+
+            if ( m_selection )
+                m_selection->UpdateCols( pos, numCols );
+            wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider();
+            if (attrProvider)
+                attrProvider->UpdateAttrCols( pos, numCols );
+            if ( !GetBatchCount() )
+            {
+                CalcDimensions();
+                m_colWindow->Refresh();
+            }
+        }
+        result = true;
+        break;
+
+        case wxGRIDTABLE_NOTIFY_COLS_APPENDED:
+        {
+            int numCols = msg.GetCommandInt();
+            int oldNumCols = m_numCols;
+            m_numCols += numCols;
+
+            if ( !m_colAt.IsEmpty() )
+            {
+                m_colAt.Add( 0, numCols );
+
+                //Set the new columns' positions
+                for ( i = oldNumCols; i < m_numCols; i++ )
+                {
+                    m_colAt[i] = i;
+                }
+            }
+
+            if ( !m_colWidths.IsEmpty() )
+            {
+                m_colWidths.Add( m_defaultColWidth, numCols );
+                m_colRights.Add( 0, numCols );
+
+                int right = 0;
+                if ( oldNumCols > 0 )
+                    right = m_colRights[GetColAt( oldNumCols - 1 )];
+
+                int colPos;
+                for ( colPos = oldNumCols; colPos < m_numCols; colPos++ )
+                {
+                    i = GetColAt( colPos );
+
+                    right += m_colWidths[i];
+                    m_colRights[i] = right;
+                }
+            }
+
+            // Notice that this must be called after updating m_colWidths above
+            // as the native grid control will check whether the new columns
+            // are shown which results in accessing m_colWidths array.
+            if ( m_useNativeHeader )
+                GetGridColHeader()->SetColumnCount(m_numCols);
+
+            if ( m_currentCellCoords == wxGridNoCellCoords )
+            {
+                // if we have just inserted cols into an empty grid the current
+                // cell will be undefined...
+                //
+                SetCurrentCell( 0, 0 );
+            }
+            if ( !GetBatchCount() )
+            {
+                CalcDimensions();
+                m_colWindow->Refresh();
+            }
+        }
+        result = true;
+        break;
+
+        case wxGRIDTABLE_NOTIFY_COLS_DELETED:
+        {
+            size_t pos = msg.GetCommandInt();
+            int numCols = msg.GetCommandInt2();
+            m_numCols -= numCols;
+            if ( m_useNativeHeader )
+                GetGridColHeader()->SetColumnCount(m_numCols);
+
+            if ( !m_colAt.IsEmpty() )
+            {
+                int colID = GetColAt( pos );
+
+                m_colAt.RemoveAt( pos, numCols );
+
+                //Shift the column IDs
+                int colPos;
+                for ( colPos = 0; colPos < m_numCols; colPos++ )
+                {
+                    if ( m_colAt[colPos] > colID )
+                        m_colAt[colPos] -= numCols;
+                }
+            }
+
+            if ( !m_colWidths.IsEmpty() )
+            {
+                m_colWidths.RemoveAt( pos, numCols );
+                m_colRights.RemoveAt( pos, numCols );
+
+                int w = 0;
+                int colPos;
+                for ( colPos = 0; colPos < m_numCols; colPos++ )
+                {
+                    i = GetColAt( colPos );
+
+                    w += m_colWidths[i];
+                    m_colRights[i] = w;
+                }
+            }
+
+            if ( !m_numCols )
+            {
+                m_currentCellCoords = wxGridNoCellCoords;
+            }
+            else
+            {
+                if ( m_currentCellCoords.GetCol() >= m_numCols )
+                  m_currentCellCoords.Set( 0, 0 );
+            }
+
+            if ( m_selection )
+                m_selection->UpdateCols( pos, -((int)numCols) );
+            wxGridCellAttrProvider * attrProvider = m_table->GetAttrProvider();
+            if (attrProvider)
+            {
+                attrProvider->UpdateAttrCols( pos, -((int)numCols) );
+
+// ifdef'd out following patch from Paul Gammans
+#if 0
+                // No need to touch row attributes, unless we
+                // removed _all_ columns, in this case, we remove
+                // all row attributes.
+                // I hate to do this here, but the
+                // needed data is not available inside UpdateAttrCols.
+                if ( !GetNumberCols() )
+                    attrProvider->UpdateAttrRows( 0, -GetNumberRows() );
+#endif
+            }
+
+            if ( !GetBatchCount() )
+            {
+                CalcDimensions();
+                m_colWindow->Refresh();
+            }
+        }
+        result = true;
+        break;
+    }
+
+    InvalidateBestSize();
+
+    if (result && !GetBatchCount() )
+        m_gridWin->Refresh();
+
+    return result;
+}
+
+wxArrayInt wxGrid::CalcRowLabelsExposed( const wxRegion& reg ) const
 {
 {
-    wxPanel::ScrollWindow( dx, dy, rect );
-    m_rowLabelWin->ScrollWindow( 0, dy, rect );
-    m_colLabelWin->ScrollWindow( dx, 0, rect );
+    wxRegionIterator iter( reg );
+    wxRect r;
+
+    wxArrayInt  rowlabels;
+
+    int top, bottom;
+    while ( iter )
+    {
+        r = iter.GetRect();
+
+        // TODO: remove this when we can...
+        // There is a bug in wxMotif that gives garbage update
+        // rectangles if you jump-scroll a long way by clicking the
+        // scrollbar with middle button.  This is a work-around
+        //
+#if defined(__WXMOTIF__)
+        int cw, ch;
+        m_gridWin->GetClientSize( &cw, &ch );
+        if ( r.GetTop() > ch )
+            r.SetTop( 0 );
+        r.SetBottom( wxMin( r.GetBottom(), ch ) );
+#endif
+
+        // logical bounds of update region
+        //
+        int dummy;
+        CalcUnscrolledPosition( 0, r.GetTop(), &dummy, &top );
+        CalcUnscrolledPosition( 0, r.GetBottom(), &dummy, &bottom );
+
+        // find the row labels within these bounds
+        //
+        int row;
+        for ( row = internalYToRow(top); row < m_numRows; row++ )
+        {
+            if ( GetRowBottom(row) < top )
+                continue;
+
+            if ( GetRowTop(row) > bottom )
+                break;
+
+            rowlabels.Add( row );
+        }
+
+        ++iter;
+    }
+
+    return rowlabels;
 }
 
 }
 
+wxArrayInt wxGrid::CalcColLabelsExposed( const wxRegion& reg ) const
+{
+    wxRegionIterator iter( reg );
+    wxRect r;
+
+    wxArrayInt colLabels;
 
 
-void wxGridWindow::OnMouseEvent( wxMouseEvent& event )
+    int left, right;
+    while ( iter )
+    {
+        r = iter.GetRect();
+
+        // TODO: remove this when we can...
+        // There is a bug in wxMotif that gives garbage update
+        // rectangles if you jump-scroll a long way by clicking the
+        // scrollbar with middle button.  This is a work-around
+        //
+#if defined(__WXMOTIF__)
+        int cw, ch;
+        m_gridWin->GetClientSize( &cw, &ch );
+        if ( r.GetLeft() > cw )
+            r.SetLeft( 0 );
+        r.SetRight( wxMin( r.GetRight(), cw ) );
+#endif
+
+        // logical bounds of update region
+        //
+        int dummy;
+        CalcUnscrolledPosition( r.GetLeft(), 0, &left, &dummy );
+        CalcUnscrolledPosition( r.GetRight(), 0, &right, &dummy );
+
+        // find the cells within these bounds
+        //
+        int col;
+        int colPos;
+        for ( colPos = GetColPos( internalXToCol(left) ); colPos < m_numCols; colPos++ )
+        {
+            col = GetColAt( colPos );
+
+            if ( GetColRight(col) < left )
+                continue;
+
+            if ( GetColLeft(col) > right )
+                break;
+
+            colLabels.Add( col );
+        }
+
+        ++iter;
+    }
+
+    return colLabels;
+}
+
+wxGridCellCoordsArray wxGrid::CalcCellsExposed( const wxRegion& reg ) const
 {
 {
-    m_owner->ProcessGridCellMouseEvent( event );
+    wxRect r;
+
+    wxGridCellCoordsArray  cellsExposed;
+
+    int left, top, right, bottom;
+    for ( wxRegionIterator iter(reg); iter; ++iter )
+    {
+        r = iter.GetRect();
+
+        // Skip 0-height cells, they're invisible anyhow, don't waste time
+        // getting their rectangles and so on.
+        if ( !r.GetHeight() )
+            continue;
+
+        // TODO: remove this when we can...
+        // There is a bug in wxMotif that gives garbage update
+        // rectangles if you jump-scroll a long way by clicking the
+        // scrollbar with middle button.  This is a work-around
+        //
+#if defined(__WXMOTIF__)
+        int cw, ch;
+        m_gridWin->GetClientSize( &cw, &ch );
+        if ( r.GetTop() > ch ) r.SetTop( 0 );
+        if ( r.GetLeft() > cw ) r.SetLeft( 0 );
+        r.SetRight( wxMin( r.GetRight(), cw ) );
+        r.SetBottom( wxMin( r.GetBottom(), ch ) );
+#endif
+
+        // logical bounds of update region
+        //
+        CalcUnscrolledPosition( r.GetLeft(), r.GetTop(), &left, &top );
+        CalcUnscrolledPosition( r.GetRight(), r.GetBottom(), &right, &bottom );
+
+        // find the cells within these bounds
+        wxArrayInt cols;
+        for ( int row = internalYToRow(top); row < m_numRows; row++ )
+        {
+            if ( GetRowBottom(row) <= top )
+                continue;
+
+            if ( GetRowTop(row) > bottom )
+                break;
+
+            // add all dirty cells in this row: notice that the columns which
+            // are dirty don't depend on the row so we compute them only once
+            // for the first dirty row and then reuse for all the next ones
+            if ( cols.empty() )
+            {
+                // do determine the dirty columns
+                for ( int pos = XToPos(left); pos <= XToPos(right); pos++ )
+                    cols.push_back(GetColAt(pos));
+
+                // if there are no dirty columns at all, nothing to do
+                if ( cols.empty() )
+                    break;
+            }
+
+            const size_t count = cols.size();
+            for ( size_t n = 0; n < count; n++ )
+                cellsExposed.Add(wxGridCellCoords(row, cols[n]));
+        }
+    }
+
+    return cellsExposed;
 }
 
 
 }
 
 
-// This seems to be required for wxMotif otherwise the mouse
-// cursor must be in the cell edit control to get key events
-//
-void wxGridWindow::OnKeyDown( wxKeyEvent& event )
+void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event )
 {
 {
-    if ( !m_owner->ProcessEvent( event ) ) event.Skip();
-}
+    int x, y, row;
+    wxPoint pos( event.GetPosition() );
+    CalcUnscrolledPosition( pos.x, pos.y, &x, &y );
+
+    if ( event.Dragging() )
+    {
+        if (!m_isDragging)
+        {
+            m_isDragging = true;
+            m_rowLabelWin->CaptureMouse();
+        }
+
+        if ( event.LeftIsDown() )
+        {
+            switch ( m_cursorMode )
+            {
+                case WXGRID_CURSOR_RESIZE_ROW:
+                {
+                    int cw, ch, left, dummy;
+                    m_gridWin->GetClientSize( &cw, &ch );
+                    CalcUnscrolledPosition( 0, 0, &left, &dummy );
+
+                    wxClientDC dc( m_gridWin );
+                    PrepareDC( dc );
+                    y = wxMax( y,
+                               GetRowTop(m_dragRowOrCol) +
+                               GetRowMinimalHeight(m_dragRowOrCol) );
+                    dc.SetLogicalFunction(wxINVERT);
+                    if ( m_dragLastPos >= 0 )
+                    {
+                        dc.DrawLine( left, m_dragLastPos, left+cw, m_dragLastPos );
+                    }
+                    dc.DrawLine( left, y, left+cw, y );
+                    m_dragLastPos = y;
+                }
+                break;
+
+                case WXGRID_CURSOR_SELECT_ROW:
+                {
+                    if ( (row = YToRow( y )) >= 0 )
+                    {
+                        if ( m_selection )
+                            m_selection->SelectRow(row, event);
+                    }
+                }
+                break;
+
+                // default label to suppress warnings about "enumeration value
+                // 'xxx' not handled in switch
+                default:
+                    break;
+            }
+        }
+        return;
+    }
+
+    if ( m_isDragging && (event.Entering() || event.Leaving()) )
+        return;
+
+    if (m_isDragging)
+    {
+        if (m_rowLabelWin->HasCapture())
+            m_rowLabelWin->ReleaseMouse();
+        m_isDragging = false;
+    }
 
 
+    // ------------ Entering or leaving the window
+    //
+    if ( event.Entering() || event.Leaving() )
+    {
+        ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, m_rowLabelWin);
+    }
+
+    // ------------ Left button pressed
+    //
+    else if ( event.LeftDown() )
+    {
+        row = YToEdgeOfRow(y);
+        if ( row != wxNOT_FOUND && CanDragRowSize(row) )
+        {
+            ChangeCursorMode(WXGRID_CURSOR_RESIZE_ROW, m_rowLabelWin);
+        }
+        else // not a request to start resizing
+        {
+            row = YToRow(y);
+            if ( row >= 0 &&
+                 !SendEvent( wxEVT_GRID_LABEL_LEFT_CLICK, row, -1, event ) )
+            {
+                if ( !event.ShiftDown() && !event.CmdDown() )
+                    ClearSelection();
+                if ( m_selection )
+                {
+                    if ( event.ShiftDown() )
+                    {
+                        m_selection->SelectBlock
+                                     (
+                                        m_currentCellCoords.GetRow(), 0,
+                                        row, GetNumberCols() - 1,
+                                        event
+                                     );
+                    }
+                    else
+                    {
+                        m_selection->SelectRow(row, event);
+                    }
+                }
 
 
-void wxGridWindow::OnEraseBackground(wxEraseEvent& event)
+                ChangeCursorMode(WXGRID_CURSOR_SELECT_ROW, m_rowLabelWin);
+            }
+        }
+    }
+
+    // ------------ Left double click
+    //
+    else if (event.LeftDClick() )
+    {
+        row = YToEdgeOfRow(y);
+        if ( row != wxNOT_FOUND && CanDragRowSize(row) )
+        {
+            // adjust row height depending on label text
+            //
+            // TODO: generate RESIZING event, see #10754
+            AutoSizeRowLabelSize( row );
+
+            SendGridSizeEvent(wxEVT_GRID_ROW_SIZE, row, -1, event);
+
+            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, GetColLabelWindow());
+            m_dragLastPos = -1;
+        }
+        else // not on row separator or it's not resizable
+        {
+            row = YToRow(y);
+            if ( row >=0 &&
+                 !SendEvent( wxEVT_GRID_LABEL_LEFT_DCLICK, row, -1, event ) )
+            {
+                // no default action at the moment
+            }
+        }
+    }
+
+    // ------------ Left button released
+    //
+    else if ( event.LeftUp() )
+    {
+        if ( m_cursorMode == WXGRID_CURSOR_RESIZE_ROW )
+            DoEndDragResizeRow(event);
+
+        ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, m_rowLabelWin);
+        m_dragLastPos = -1;
+    }
+
+    // ------------ Right button down
+    //
+    else if ( event.RightDown() )
+    {
+        row = YToRow(y);
+        if ( row >=0 &&
+             !SendEvent( wxEVT_GRID_LABEL_RIGHT_CLICK, row, -1, event ) )
+        {
+            // no default action at the moment
+        }
+    }
+
+    // ------------ Right double click
+    //
+    else if ( event.RightDClick() )
+    {
+        row = YToRow(y);
+        if ( row >= 0 &&
+             !SendEvent( wxEVT_GRID_LABEL_RIGHT_DCLICK, row, -1, event ) )
+        {
+            // no default action at the moment
+        }
+    }
+
+    // ------------ No buttons down and mouse moving
+    //
+    else if ( event.Moving() )
+    {
+        m_dragRowOrCol = YToEdgeOfRow( y );
+        if ( m_dragRowOrCol != wxNOT_FOUND )
+        {
+            if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
+            {
+                if ( CanDragRowSize(m_dragRowOrCol) )
+                    ChangeCursorMode(WXGRID_CURSOR_RESIZE_ROW, m_rowLabelWin, false);
+            }
+        }
+        else if ( m_cursorMode != WXGRID_CURSOR_SELECT_CELL )
+        {
+            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, m_rowLabelWin, false);
+        }
+    }
+}
+
+void wxGrid::UpdateColumnSortingIndicator(int col)
 {
 {
+    wxCHECK_RET( col != wxNOT_FOUND, "invalid column index" );
+
+    if ( m_useNativeHeader )
+        GetGridColHeader()->UpdateColumn(col);
+    else if ( m_nativeColumnLabels )
+        m_colWindow->Refresh();
+    //else: sorting indicator display not yet implemented in grid version
 }
 
 }
 
+void wxGrid::SetSortingColumn(int col, bool ascending)
+{
+    if ( col == m_sortCol )
+    {
+        // we are already using this column for sorting (or not sorting at all)
+        // but we might still change the sorting order, check for it
+        if ( m_sortCol != wxNOT_FOUND && ascending != m_sortIsAscending )
+        {
+            m_sortIsAscending = ascending;
 
 
-//////////////////////////////////////////////////////////////////////
+            UpdateColumnSortingIndicator(m_sortCol);
+        }
+    }
+    else // we're changing the column used for sorting
+    {
+        const int sortColOld = m_sortCol;
 
 
+        // change it before updating the column as we want GetSortingColumn()
+        // to return the correct new value
+        m_sortCol = col;
 
 
-IMPLEMENT_DYNAMIC_CLASS( wxGrid, wxScrolledWindow )
+        if ( sortColOld != wxNOT_FOUND )
+            UpdateColumnSortingIndicator(sortColOld);
 
 
-BEGIN_EVENT_TABLE( wxGrid, wxScrolledWindow )
-    EVT_PAINT( wxGrid::OnPaint )
-    EVT_SIZE( wxGrid::OnSize )
-    EVT_KEY_DOWN( wxGrid::OnKeyDown )
-    EVT_ERASE_BACKGROUND( wxGrid::OnEraseBackground )
-END_EVENT_TABLE()
+        if ( m_sortCol != wxNOT_FOUND )
+        {
+            m_sortIsAscending = ascending;
+            UpdateColumnSortingIndicator(m_sortCol);
+        }
+    }
+}
+
+void wxGrid::DoColHeaderClick(int col)
+{
+    // we consider that the grid was resorted if this event is processed and
+    // not vetoed
+    if ( SendEvent(wxEVT_GRID_COL_SORT, -1, col) == 1 )
+    {
+        SetSortingColumn(col, IsSortingBy(col) ? !m_sortIsAscending : true);
+        Refresh();
+    }
+}
+
+void wxGrid::DoStartResizeCol(int col)
+{
+    m_dragRowOrCol = col;
+    m_dragLastPos = -1;
+    DoUpdateResizeColWidth(GetColWidth(m_dragRowOrCol));
+}
 
 
-wxGrid::wxGrid( wxWindow *parent,
-                 wxWindowID id,
-                 const wxPoint& pos,
-                 const wxSize& size,
-                 long style,
-                 const wxString& name )
-  : wxScrolledWindow( parent, id, pos, size, (style | wxWANTS_CHARS), name ),
-    m_colMinWidths(GRID_HASH_SIZE),
-    m_rowMinHeights(GRID_HASH_SIZE)
+void wxGrid::DoUpdateResizeCol(int x)
 {
 {
-    Create();
+    int cw, ch, dummy, top;
+    m_gridWin->GetClientSize( &cw, &ch );
+    CalcUnscrolledPosition( 0, 0, &dummy, &top );
+
+    wxClientDC dc( m_gridWin );
+    PrepareDC( dc );
+
+    x = wxMax( x, GetColLeft(m_dragRowOrCol) + GetColMinimalWidth(m_dragRowOrCol));
+    dc.SetLogicalFunction(wxINVERT);
+    if ( m_dragLastPos >= 0 )
+    {
+        dc.DrawLine( m_dragLastPos, top, m_dragLastPos, top + ch );
+    }
+    dc.DrawLine( x, top, x, top + ch );
+    m_dragLastPos = x;
 }
 
 }
 
+void wxGrid::DoUpdateResizeColWidth(int w)
+{
+    DoUpdateResizeCol(GetColLeft(m_dragRowOrCol) + w);
+}
 
 
-wxGrid::~wxGrid()
+void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event )
 {
 {
-    ClearAttrCache();
-    wxSafeDecRef(m_defaultCellAttr);
+    int x;
+    CalcUnscrolledPosition( event.GetPosition().x, 0, &x, NULL );
 
 
-#ifdef DEBUG_ATTR_CACHE
-    size_t total = gs_nAttrCacheHits + gs_nAttrCacheMisses;
-    wxPrintf(_T("wxGrid attribute cache statistics: "
-                "total: %u, hits: %u (%u%%)\n"),
-             total, gs_nAttrCacheHits,
-             total ? (gs_nAttrCacheHits*100) / total : 0);
-#endif
+    int col = XToCol(x);
+    if ( event.Dragging() )
+    {
+        if (!m_isDragging)
+        {
+            m_isDragging = true;
+            GetColLabelWindow()->CaptureMouse();
 
 
-    if (m_ownTable)
-        delete m_table;
+            if ( m_cursorMode == WXGRID_CURSOR_MOVE_COL && col != -1 )
+                DoStartMoveCol(col);
+        }
 
 
-    delete m_typeRegistry;
-    delete m_selection;
-}
+        if ( event.LeftIsDown() )
+        {
+            switch ( m_cursorMode )
+            {
+                case WXGRID_CURSOR_RESIZE_COL:
+                DoUpdateResizeCol(x);
+                break;
 
 
+                case WXGRID_CURSOR_SELECT_COL:
+                {
+                    if ( col != -1 )
+                    {
+                        if ( m_selection )
+                            m_selection->SelectCol(col, event);
+                    }
+                }
+                break;
 
 
-//
-// ----- internal init and update functions
-//
+                case WXGRID_CURSOR_MOVE_COL:
+                {
+                    int posNew = XToPos(x);
+                    int colNew = GetColAt(posNew);
 
 
-void wxGrid::Create()
-{
-    m_created = FALSE;    // set to TRUE by CreateGrid
-    m_displayed = TRUE; // FALSE;  // set to TRUE by OnPaint
+                    // determine the position of the drop marker
+                    int markerX;
+                    if ( x >= GetColLeft(colNew) + (GetColWidth(colNew) / 2) )
+                        markerX = GetColRight(colNew);
+                    else
+                        markerX = GetColLeft(colNew);
 
 
-    m_table        = (wxGridTableBase *) NULL;
-    m_ownTable     = FALSE;
+                    if ( markerX != m_dragLastPos )
+                    {
+                        wxClientDC dc( GetColLabelWindow() );
+                        DoPrepareDC(dc);
 
 
-    m_cellEditCtrlEnabled = FALSE;
+                        int cw, ch;
+                        GetColLabelWindow()->GetClientSize( &cw, &ch );
 
 
-    m_defaultCellAttr = new wxGridCellAttr;
-    m_defaultCellAttr->SetDefAttr(m_defaultCellAttr);
+                        markerX++;
 
 
-    // Set default cell attributes
-    m_defaultCellAttr->SetFont(GetFont());
-    m_defaultCellAttr->SetAlignment(wxLEFT, wxTOP);
-    m_defaultCellAttr->SetTextColour(
-        wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOWTEXT));
-    m_defaultCellAttr->SetBackgroundColour(
-        wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
-    m_defaultCellAttr->SetRenderer(new wxGridCellStringRenderer);
-    m_defaultCellAttr->SetEditor(new wxGridCellTextEditor);
+                        //Clean up the last indicator
+                        if ( m_dragLastPos >= 0 )
+                        {
+                            wxPen pen( GetColLabelWindow()->GetBackgroundColour(), 2 );
+                            dc.SetPen(pen);
+                            dc.DrawLine( m_dragLastPos + 1, 0, m_dragLastPos + 1, ch );
+                            dc.SetPen(wxNullPen);
 
 
+                            if ( XToCol( m_dragLastPos ) != -1 )
+                                DrawColLabel( dc, XToCol( m_dragLastPos ) );
+                        }
 
 
-    m_numRows = 0;
-    m_numCols = 0;
-    m_currentCellCoords = wxGridNoCellCoords;
+                        const wxColour *color;
+                        //Moving to the same place? Don't draw a marker
+                        if ( colNew == m_dragRowOrCol )
+                            color = wxLIGHT_GREY;
+                        else
+                            color = wxBLUE;
 
 
-    m_rowLabelWidth = WXGRID_DEFAULT_ROW_LABEL_WIDTH;
-    m_colLabelHeight = WXGRID_DEFAULT_COL_LABEL_HEIGHT;
+                        //Draw the marker
+                        wxPen pen( *color, 2 );
+                        dc.SetPen(pen);
 
 
-    // create the type registry
-    m_typeRegistry = new wxGridTypeRegistry;
-    m_selection = 0;
-    // subwindow components that make up the wxGrid
-    m_cornerLabelWin = new wxGridCornerLabelWindow( this,
-                                                    -1,
-                                                    wxDefaultPosition,
-                                                    wxDefaultSize );
-
-    m_rowLabelWin = new wxGridRowLabelWindow( this,
-                                              -1,
-                                              wxDefaultPosition,
-                                              wxDefaultSize );
-
-    m_colLabelWin = new wxGridColLabelWindow( this,
-                                              -1,
-                                              wxDefaultPosition,
-                                              wxDefaultSize );
-
-    m_gridWin = new wxGridWindow( this,
-                                  m_rowLabelWin,
-                                  m_colLabelWin,
-                                  -1,
-                                  wxDefaultPosition,
-                                  wxDefaultSize );
+                        dc.DrawLine( markerX, 0, markerX, ch );
 
 
-    SetTargetWindow( m_gridWin );
-}
+                        dc.SetPen(wxNullPen);
 
 
+                        m_dragLastPos = markerX - 1;
+                    }
+                }
+                break;
 
 
-bool wxGrid::CreateGrid( int numRows, int numCols,
-                         wxGrid::wxGridSelectionModes selmode )
-{
-    if ( m_created )
-    {
-        wxFAIL_MSG( wxT("wxGrid::CreateGrid or wxGrid::SetTable called more than once") );
-        return FALSE;
+                // default label to suppress warnings about "enumeration value
+                // 'xxx' not handled in switch
+                default:
+                    break;
+            }
+        }
+        return;
     }
     }
-    else
-    {
-        m_numRows = numRows;
-        m_numCols = numCols;
 
 
-        m_table = new wxGridStringTable( m_numRows, m_numCols );
-        m_table->SetView( this );
-        m_ownTable = TRUE;
-        Init();
-        m_created = TRUE;
+    if ( m_isDragging && (event.Entering() || event.Leaving()) )
+        return;
+
+    if (m_isDragging)
+    {
+        if (GetColLabelWindow()->HasCapture())
+            GetColLabelWindow()->ReleaseMouse();
+        m_isDragging = false;
     }
     }
-    m_selection = new wxGridSelection( this, selmode );
-    return m_created;
-}
 
 
-void wxGrid::SetSelectionMode(wxGrid::wxGridSelectionModes selmode)
-{
-    if ( !m_created )
+    // ------------ Entering or leaving the window
+    //
+    if ( event.Entering() || event.Leaving() )
     {
     {
-        wxFAIL_MSG( wxT("Called wxGrid::SetSelectionMode() before calling CreateGrid()") );
+        ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, GetColLabelWindow());
     }
     }
-    else
-        m_selection->SetSelectionMode( selmode );
-}
 
 
-bool wxGrid::SetTable( wxGridTableBase *table, bool takeOwnership )
-{
-    if ( m_created )
+    // ------------ Left button pressed
+    //
+    else if ( event.LeftDown() )
     {
     {
-        // RD: Actually, this should probably be allowed.  I think it would be
-        // nice to be able to switch multiple Tables in and out of a single
-        // View at runtime.  Is there anything in the implmentation that would
-        // prevent this?
+        int colEdge = XToEdgeOfCol(x);
+        if ( colEdge != wxNOT_FOUND && CanDragColSize(colEdge) )
+        {
+            ChangeCursorMode(WXGRID_CURSOR_RESIZE_COL, GetColLabelWindow());
+        }
+        else // not a request to start resizing
+        {
+            if ( col >= 0 &&
+                 !SendEvent( wxEVT_GRID_LABEL_LEFT_CLICK, -1, col, event ) )
+            {
+                if ( m_canDragColMove )
+                {
+                    //Show button as pressed
+                    wxClientDC dc( GetColLabelWindow() );
+                    int colLeft = GetColLeft( col );
+                    int colRight = GetColRight( col ) - 1;
+                    dc.SetPen( wxPen( GetColLabelWindow()->GetBackgroundColour(), 1 ) );
+                    dc.DrawLine( colLeft, 1, colLeft, m_colLabelHeight-1 );
+                    dc.DrawLine( colLeft, 1, colRight, 1 );
+
+                    ChangeCursorMode(WXGRID_CURSOR_MOVE_COL, GetColLabelWindow());
+                }
+                else
+                {
+                    if ( !event.ShiftDown() && !event.CmdDown() )
+                        ClearSelection();
+                    if ( m_selection )
+                    {
+                        if ( event.ShiftDown() )
+                        {
+                            m_selection->SelectBlock
+                                         (
+                                            0, m_currentCellCoords.GetCol(),
+                                            GetNumberRows() - 1, col,
+                                            event
+                                         );
+                        }
+                        else
+                        {
+                            m_selection->SelectCol(col, event);
+                        }
+                    }
 
 
-        wxFAIL_MSG( wxT("wxGrid::CreateGrid or wxGrid::SetTable called more than once") );
-        return FALSE;
+                    ChangeCursorMode(WXGRID_CURSOR_SELECT_COL, GetColLabelWindow());
+                }
+            }
+        }
     }
     }
-    else
+
+    // ------------ Left double click
+    //
+    if ( event.LeftDClick() )
     {
     {
-        m_numRows = table->GetNumberRows();
-        m_numCols = table->GetNumberCols();
+        const int colEdge = XToEdgeOfCol(x);
+        if ( colEdge == -1 )
+        {
+            if ( col >= 0 &&
+                 ! SendEvent( wxEVT_GRID_LABEL_LEFT_DCLICK, -1, col, event ) )
+            {
+                // no default action at the moment
+            }
+        }
+        else
+        {
+            // adjust column width depending on label text
+            //
+            // TODO: generate RESIZING event, see #10754
+            if ( !SendGridSizeEvent(wxEVT_GRID_COL_AUTO_SIZE, -1, colEdge, event) )
+                AutoSizeColLabelSize( colEdge );
 
 
-        m_table = table;
-        m_table->SetView( this );
-        if (takeOwnership)
-            m_ownTable = TRUE;
-        Init();
-        m_created = TRUE;
+            SendGridSizeEvent(wxEVT_GRID_COL_SIZE, -1, colEdge, event);
+
+            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, GetColLabelWindow());
+            m_dragLastPos = -1;
+        }
     }
 
     }
 
-    return m_created;
-}
+    // ------------ Left button released
+    //
+    else if ( event.LeftUp() )
+    {
+        switch ( m_cursorMode )
+        {
+            case WXGRID_CURSOR_RESIZE_COL:
+                DoEndDragResizeCol(event);
+                break;
 
 
+            case WXGRID_CURSOR_MOVE_COL:
+                if ( m_dragLastPos == -1 || col == m_dragRowOrCol )
+                {
+                    // the column didn't actually move anywhere
+                    if ( col != -1 )
+                        DoColHeaderClick(col);
+                    m_colWindow->Refresh();   // "unpress" the column
+                }
+                else
+                {
+                    // get the position of the column we're over
+                    int pos = XToPos(x);
 
 
-void wxGrid::Init()
-{
-    if ( m_numRows <= 0 )
-        m_numRows = WXGRID_DEFAULT_NUMBER_ROWS;
+                    // we may need to adjust the drop position but don't bother
+                    // checking for it if we can't anyhow
+                    if ( pos > 1 )
+                    {
+                        // also find the index of the column we're over: notice
+                        // that the existing "col" variable may be invalid but
+                        // we need a valid one here
+                        const int colValid = GetColAt(pos);
+
+                        // if we're on the "near" (usually left but right in
+                        // RTL case) part of the column, the actual position we
+                        // should be placed in is actually the one before it
+                        bool onNearPart;
+                        const int middle = GetColLeft(colValid) +
+                                                GetColWidth(colValid)/2;
+                        if ( GetLayoutDirection() == wxLayout_LeftToRight )
+                            onNearPart = (x <= middle);
+                        else // wxLayout_RightToLeft
+                            onNearPart = (x > middle);
+
+                        if ( onNearPart )
+                            pos--;
+                    }
 
 
-    if ( m_numCols <= 0 )
-        m_numCols = WXGRID_DEFAULT_NUMBER_COLS;
+                    DoEndMoveCol(pos);
+                }
+                break;
 
 
-    m_rowLabelWidth  = WXGRID_DEFAULT_ROW_LABEL_WIDTH;
-    m_colLabelHeight = WXGRID_DEFAULT_COL_LABEL_HEIGHT;
+            case WXGRID_CURSOR_SELECT_COL:
+            case WXGRID_CURSOR_SELECT_CELL:
+            case WXGRID_CURSOR_RESIZE_ROW:
+            case WXGRID_CURSOR_SELECT_ROW:
+                if ( col != -1 )
+                    DoColHeaderClick(col);
+                break;
+        }
 
 
-    if ( m_rowLabelWin )
+        ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, GetColLabelWindow());
+        m_dragLastPos = -1;
+    }
+
+    // ------------ Right button down
+    //
+    else if ( event.RightDown() )
     {
     {
-        m_labelBackgroundColour = m_rowLabelWin->GetBackgroundColour();
+        if ( col >= 0 &&
+             !SendEvent( wxEVT_GRID_LABEL_RIGHT_CLICK, -1, col, event ) )
+        {
+            // no default action at the moment
+        }
     }
     }
-    else
+
+    // ------------ Right double click
+    //
+    else if ( event.RightDClick() )
     {
     {
-        m_labelBackgroundColour = wxColour( _T("WHITE") );
+        if ( col >= 0 &&
+             !SendEvent( wxEVT_GRID_LABEL_RIGHT_DCLICK, -1, col, event ) )
+        {
+            // no default action at the moment
+        }
     }
 
     }
 
-    m_labelTextColour = wxColour( _T("BLACK") );
+    // ------------ No buttons down and mouse moving
+    //
+    else if ( event.Moving() )
+    {
+        m_dragRowOrCol = XToEdgeOfCol( x );
+        if ( m_dragRowOrCol >= 0 )
+        {
+            if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
+            {
+                if ( CanDragColSize(m_dragRowOrCol) )
+                    ChangeCursorMode(WXGRID_CURSOR_RESIZE_COL, GetColLabelWindow(), false);
+            }
+        }
+        else if ( m_cursorMode != WXGRID_CURSOR_SELECT_CELL )
+        {
+            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, GetColLabelWindow(), false);
+        }
+    }
+}
 
 
-    // init attr cache
-    m_attrCache.row = -1;
+void wxGrid::ProcessCornerLabelMouseEvent( wxMouseEvent& event )
+{
+    if ( event.LeftDown() )
+    {
+        // indicate corner label by having both row and
+        // col args == -1
+        //
+        if ( !SendEvent( wxEVT_GRID_LABEL_LEFT_CLICK, -1, -1, event ) )
+        {
+            SelectAll();
+        }
+    }
+    else if ( event.LeftDClick() )
+    {
+        SendEvent( wxEVT_GRID_LABEL_LEFT_DCLICK, -1, -1, event );
+    }
+    else if ( event.RightDown() )
+    {
+        if ( !SendEvent( wxEVT_GRID_LABEL_RIGHT_CLICK, -1, -1, event ) )
+        {
+            // no default action at the moment
+        }
+    }
+    else if ( event.RightDClick() )
+    {
+        if ( !SendEvent( wxEVT_GRID_LABEL_RIGHT_DCLICK, -1, -1, event ) )
+        {
+            // no default action at the moment
+        }
+    }
+}
 
 
-    // TODO: something better than this ?
-    //
-    m_labelFont = this->GetFont();
-    m_labelFont.SetWeight( m_labelFont.GetWeight() + 2 );
+void wxGrid::CancelMouseCapture()
+{
+    // cancel operation currently in progress, whatever it is
+    if ( m_winCapture )
+    {
+        m_isDragging = false;
+        m_startDragPos = wxDefaultPosition;
 
 
-    m_rowLabelHorizAlign = wxLEFT;
-    m_rowLabelVertAlign  = wxCENTRE;
+        m_cursorMode = WXGRID_CURSOR_SELECT_CELL;
+        m_winCapture->SetCursor( *wxSTANDARD_CURSOR );
+        m_winCapture = NULL;
 
 
-    m_colLabelHorizAlign = wxCENTRE;
-    m_colLabelVertAlign  = wxTOP;
+        // remove traces of whatever we drew on screen
+        Refresh();
+    }
+}
 
 
-    m_defaultColWidth  = WXGRID_DEFAULT_COL_WIDTH;
-    m_defaultRowHeight = m_gridWin->GetCharHeight();
+void wxGrid::ChangeCursorMode(CursorMode mode,
+                              wxWindow *win,
+                              bool captureMouse)
+{
+#if wxUSE_LOG_TRACE
+    static const wxChar *const cursorModes[] =
+    {
+        wxT("SELECT_CELL"),
+        wxT("RESIZE_ROW"),
+        wxT("RESIZE_COL"),
+        wxT("SELECT_ROW"),
+        wxT("SELECT_COL"),
+        wxT("MOVE_COL"),
+    };
 
 
-#if defined(__WXMOTIF__) || defined(__WXGTK__)  // see also text ctrl sizing in ShowCellEditControl()
-    m_defaultRowHeight += 8;
-#else
-    m_defaultRowHeight += 4;
-#endif
+    wxLogTrace(wxT("grid"),
+               wxT("wxGrid cursor mode (mouse capture for %s): %s -> %s"),
+               win == m_colWindow ? wxT("colLabelWin")
+                                  : win ? wxT("rowLabelWin")
+                                        : wxT("gridWin"),
+               cursorModes[m_cursorMode], cursorModes[mode]);
+#endif // wxUSE_LOG_TRACE
 
 
-    m_gridLineColour = wxColour( 128, 128, 255 );
-    m_gridLinesEnabled = TRUE;
+    if ( mode == m_cursorMode &&
+         win == m_winCapture &&
+         captureMouse == (m_winCapture != NULL))
+        return;
 
 
-    m_cursorMode  = WXGRID_CURSOR_SELECT_CELL;
-    m_winCapture = (wxWindow *)NULL;
-    m_canDragRowSize = TRUE;
-    m_canDragColSize = TRUE;
-    m_canDragGridSize = TRUE;
-    m_dragLastPos  = -1;
-    m_dragRowOrCol = -1;
-    m_isDragging = FALSE;
-    m_startDragPos = wxDefaultPosition;
+    if ( !win )
+    {
+        // by default use the grid itself
+        win = m_gridWin;
+    }
 
 
-    m_waitForSlowClick = FALSE;
+    if ( m_winCapture )
+    {
+        m_winCapture->ReleaseMouse();
+        m_winCapture = NULL;
+    }
 
 
-    m_rowResizeCursor = wxCursor( wxCURSOR_SIZENS );
-    m_colResizeCursor = wxCursor( wxCURSOR_SIZEWE );
+    m_cursorMode = mode;
 
 
-    m_currentCellCoords = wxGridNoCellCoords;
+    switch ( m_cursorMode )
+    {
+        case WXGRID_CURSOR_RESIZE_ROW:
+            win->SetCursor( m_rowResizeCursor );
+            break;
 
 
-    m_selectingTopLeft = wxGridNoCellCoords;
-    m_selectingBottomRight = wxGridNoCellCoords;
-    m_selectionBackground = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHT);
-    m_selectionForeground = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
+        case WXGRID_CURSOR_RESIZE_COL:
+            win->SetCursor( m_colResizeCursor );
+            break;
 
 
-    m_editable = TRUE;  // default for whole grid
+        case WXGRID_CURSOR_MOVE_COL:
+            win->SetCursor( wxCursor(wxCURSOR_HAND) );
+            break;
 
 
-    m_inOnKeyDown = FALSE;
-    m_batchCount = 0;
+        default:
+            win->SetCursor( *wxSTANDARD_CURSOR );
+            break;
+    }
 
 
-    m_extraWidth =
-    m_extraHeight = 50;
+    // we need to capture mouse when resizing
+    bool resize = m_cursorMode == WXGRID_CURSOR_RESIZE_ROW ||
+                  m_cursorMode == WXGRID_CURSOR_RESIZE_COL;
 
 
-    CalcDimensions();
+    if ( captureMouse && resize )
+    {
+        win->CaptureMouse();
+        m_winCapture = win;
+    }
 }
 
 // ----------------------------------------------------------------------------
 }
 
 // ----------------------------------------------------------------------------
-// the idea is to call these functions only when necessary because they create
-// quite big arrays which eat memory mostly unnecessary - in particular, if
-// default widths/heights are used for all rows/columns, we may not use these
-// arrays at all
-//
-// with some extra code, it should be possible to only store the
-// widths/heights different from default ones but this will be done later...
+// grid mouse event processing
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 
-void wxGrid::InitRowHeights()
+bool
+wxGrid::DoGridCellDrag(wxMouseEvent& event,
+                       const wxGridCellCoords& coords,
+                       bool isFirstDrag)
 {
 {
-    m_rowHeights.Empty();
-    m_rowBottoms.Empty();
+    bool performDefault = true ;
+    
+    if ( coords == wxGridNoCellCoords )
+        return performDefault; // we're outside any valid cell
 
 
-    m_rowHeights.Alloc( m_numRows );
-    m_rowBottoms.Alloc( m_numRows );
-
-    int rowBottom = 0;
-    for ( int i = 0;  i < m_numRows;  i++ )
+    // Hide the edit control, so it won't interfere with drag-shrinking.
+    if ( IsCellEditControlShown() )
     {
     {
-        m_rowHeights.Add( m_defaultRowHeight );
-        rowBottom += m_defaultRowHeight;
-        m_rowBottoms.Add( rowBottom );
+        HideCellEditControl();
+        SaveEditControlValue();
     }
     }
-}
-
-void wxGrid::InitColWidths()
-{
-    m_colWidths.Empty();
-    m_colRights.Empty();
 
 
-    m_colWidths.Alloc( m_numCols );
-    m_colRights.Alloc( m_numCols );
-    int colRight = 0;
-    for ( int i = 0;  i < m_numCols;  i++ )
+    switch ( event.GetModifiers() )
     {
     {
-        m_colWidths.Add( m_defaultColWidth );
-        colRight += m_defaultColWidth;
-        m_colRights.Add( colRight );
+        case wxMOD_CONTROL:
+            if ( m_selectedBlockCorner == wxGridNoCellCoords)
+                m_selectedBlockCorner = coords;
+            UpdateBlockBeingSelected(m_selectedBlockCorner, coords);
+            break;
+
+        case wxMOD_NONE:
+            if ( CanDragCell() )
+            {
+                if ( isFirstDrag )
+                {
+                    if ( m_selectedBlockCorner == wxGridNoCellCoords)
+                        m_selectedBlockCorner = coords;
+
+                    // if event is handled by user code, no further processing
+                    if ( SendEvent(wxEVT_GRID_CELL_BEGIN_DRAG, coords, event) != 0 )
+                        performDefault = false;
+                    
+                    return performDefault;
+                }
+            }
+
+            UpdateBlockBeingSelected(m_currentCellCoords, coords);
+            break;
+
+        default:
+            // we don't handle the other key modifiers
+            event.Skip();
     }
     }
+    
+    return performDefault;
 }
 
 }
 
-int wxGrid::GetColWidth(int col) const
+void wxGrid::DoGridLineDrag(wxMouseEvent& event, const wxGridOperations& oper)
 {
 {
-    return m_colWidths.IsEmpty() ? m_defaultColWidth : m_colWidths[col];
-}
+    wxClientDC dc(m_gridWin);
+    PrepareDC(dc);
+    dc.SetLogicalFunction(wxINVERT);
 
 
-int wxGrid::GetColLeft(int col) const
-{
-    return m_colRights.IsEmpty() ? col * m_defaultColWidth
-                                 : m_colRights[col] - m_colWidths[col];
-}
+    const wxRect rectWin(CalcUnscrolledPosition(wxPoint(0, 0)),
+                         m_gridWin->GetClientSize());
 
 
-int wxGrid::GetColRight(int col) const
-{
-    return m_colRights.IsEmpty() ? (col + 1) * m_defaultColWidth
-                                 : m_colRights[col];
-}
+    // erase the previously drawn line, if any
+    if ( m_dragLastPos >= 0 )
+        oper.DrawParallelLineInRect(dc, rectWin, m_dragLastPos);
 
 
-int wxGrid::GetRowHeight(int row) const
-{
-    return m_rowHeights.IsEmpty() ? m_defaultRowHeight : m_rowHeights[row];
-}
+    // we need the vertical position for rows and horizontal for columns here
+    m_dragLastPos = oper.Dual().Select(CalcUnscrolledPosition(event.GetPosition()));
 
 
-int wxGrid::GetRowTop(int row) const
-{
-    return m_rowBottoms.IsEmpty() ? row * m_defaultRowHeight
-                                  : m_rowBottoms[row] - m_rowHeights[row];
-}
+    // don't allow resizing beneath the minimal size
+    const int posMin = oper.GetLineStartPos(this, m_dragRowOrCol) +
+                        oper.GetMinimalLineSize(this, m_dragRowOrCol);
+    if ( m_dragLastPos < posMin )
+        m_dragLastPos = posMin;
 
 
-int wxGrid::GetRowBottom(int row) const
-{
-    return m_rowBottoms.IsEmpty() ? (row + 1) * m_defaultRowHeight
-                                  : m_rowBottoms[row];
+    // and draw it at the new position
+    oper.DrawParallelLineInRect(dc, rectWin, m_dragLastPos);
 }
 
 }
 
-void wxGrid::CalcDimensions()
+void wxGrid::DoGridDragEvent(wxMouseEvent& event, const wxGridCellCoords& coords)
 {
 {
-    int cw, ch;
-    GetClientSize( &cw, &ch );
-
-    if ( m_numRows > 0  &&  m_numCols > 0 )
+    if ( !m_isDragging )
     {
     {
-        int right = GetColRight( m_numCols-1 ) + m_extraWidth;
-        int bottom = GetRowBottom( m_numRows-1 ) + m_extraHeight;
+        // Don't start doing anything until the mouse has been dragged far
+        // enough
+        const wxPoint& pt = event.GetPosition();
+        if ( m_startDragPos == wxDefaultPosition )
+        {
+            m_startDragPos = pt;
+            return;
+        }
 
 
-        // TODO: restore the scroll position that we had before sizing
-        //
-        int x, y;
-        GetViewStart( &x, &y );
-        SetScrollbars( GRID_SCROLL_LINE, GRID_SCROLL_LINE,
-                       right/GRID_SCROLL_LINE, bottom/GRID_SCROLL_LINE,
-                       x, y );
+        if ( abs(m_startDragPos.x - pt.x) <= DRAG_SENSITIVITY &&
+                abs(m_startDragPos.y - pt.y) <= DRAG_SENSITIVITY )
+            return;
     }
     }
-}
 
 
+    const bool isFirstDrag = !m_isDragging;
+    m_isDragging = true;
 
 
-void wxGrid::CalcWindowSizes()
-{
-    int cw, ch;
-    GetClientSize( &cw, &ch );
+    switch ( m_cursorMode )
+    {
+        case WXGRID_CURSOR_SELECT_CELL:
+            // no further handling if handled by user
+            if ( DoGridCellDrag(event, coords, isFirstDrag) == false )
+                return;
+            break;
 
 
-    if ( m_cornerLabelWin->IsShown() )
-        m_cornerLabelWin->SetSize( 0, 0, m_rowLabelWidth, m_colLabelHeight );
+        case WXGRID_CURSOR_RESIZE_ROW:
+            DoGridLineDrag(event, wxGridRowOperations());
+            break;
+
+        case WXGRID_CURSOR_RESIZE_COL:
+            DoGridLineDrag(event, wxGridColumnOperations());
+            break;
 
 
-    if ( m_colLabelWin->IsShown() )
-        m_colLabelWin->SetSize( m_rowLabelWidth, 0, cw-m_rowLabelWidth, m_colLabelHeight);
+        default:
+            event.Skip();
+    }
 
 
-    if ( m_rowLabelWin->IsShown() )
-        m_rowLabelWin->SetSize( 0, m_colLabelHeight, m_rowLabelWidth, ch-m_colLabelHeight);
+    if ( isFirstDrag )
+    {
+        wxASSERT_MSG( !m_winCapture, "shouldn't capture the mouse twice" );
 
 
-    if ( m_gridWin->IsShown() )
-        m_gridWin->SetSize( m_rowLabelWidth, m_colLabelHeight, cw-m_rowLabelWidth, ch-m_colLabelHeight);
+        m_winCapture = m_gridWin;
+        m_winCapture->CaptureMouse();
+    }
 }
 
 }
 
-
-// this is called when the grid table sends a message to say that it
-// has been redimensioned
-//
-bool wxGrid::Redimension( wxGridTableMessage& msg )
+void
+wxGrid::DoGridCellLeftDown(wxMouseEvent& event,
+                           const wxGridCellCoords& coords,
+                           const wxPoint& pos)
 {
 {
-    int i;
-
-    // if we were using the default widths/heights so far, we must change them
-    // now
-    if ( m_colWidths.IsEmpty() )
+    if ( SendEvent(wxEVT_GRID_CELL_LEFT_CLICK, coords, event) )
     {
     {
-        InitColWidths();
+        // event handled by user code, no need to do anything here
+        return;
     }
 
     }
 
-    if ( m_rowHeights.IsEmpty() )
+    if ( !event.CmdDown() )
+        ClearSelection();
+
+    if ( event.ShiftDown() )
     {
     {
-        InitRowHeights();
+        if ( m_selection )
+        {
+            m_selection->SelectBlock(m_currentCellCoords, coords, event);
+            m_selectedBlockCorner = coords;
+        }
     }
     }
-
-    switch ( msg.GetId() )
+    else if ( XToEdgeOfCol(pos.x) < 0 && YToEdgeOfRow(pos.y) < 0 )
     {
     {
-        case wxGRIDTABLE_NOTIFY_ROWS_INSERTED:
+        DisableCellEditControl();
+        MakeCellVisible( coords );
+
+        if ( event.CmdDown() )
         {
         {
-            size_t pos = msg.GetCommandInt();
-            int numRows = msg.GetCommandInt2();
-            for ( i = 0;  i < numRows;  i++ )
+            if ( m_selection )
             {
             {
-                m_rowHeights.Insert( m_defaultRowHeight, pos );
-                m_rowBottoms.Insert( 0, pos );
+                m_selection->ToggleCellSelection(coords, event);
             }
             }
-            m_numRows += numRows;
 
 
-            int bottom = 0;
-            if ( pos > 0 ) bottom = m_rowBottoms[pos-1];
-
-            for ( i = pos;  i < m_numRows;  i++ )
-            {
-                bottom += m_rowHeights[i];
-                m_rowBottoms[i] = bottom;
-            }
-            CalcDimensions();
+            m_selectedBlockTopLeft = wxGridNoCellCoords;
+            m_selectedBlockBottomRight = wxGridNoCellCoords;
+            m_selectedBlockCorner = coords;
         }
         }
-        return TRUE;
-
-        case wxGRIDTABLE_NOTIFY_ROWS_APPENDED:
+        else
         {
         {
-            int numRows = msg.GetCommandInt();
-            for ( i = 0;  i < numRows;  i++ )
+            if ( m_selection )
             {
             {
-                m_rowHeights.Add( m_defaultRowHeight );
-                m_rowBottoms.Add( 0 );
+                // In row or column selection mode just clicking on the cell
+                // should select the row or column containing it: this is more
+                // convenient for the kinds of controls that use such selection
+                // mode and is compatible with 2.8 behaviour (see #12062).
+                switch ( m_selection->GetSelectionMode() )
+                {
+                    case wxGridSelectCells:
+                    case wxGridSelectRowsOrColumns:
+                        // nothing to do in these cases
+                        break;
+
+                    case wxGridSelectRows:
+                        m_selection->SelectRow(coords.GetRow());
+                        break;
+
+                    case wxGridSelectColumns:
+                        m_selection->SelectCol(coords.GetCol());
+                        break;
+                }
             }
 
             }
 
-            int oldNumRows = m_numRows;
-            m_numRows += numRows;
-
-            int bottom = 0;
-            if ( oldNumRows > 0 ) bottom = m_rowBottoms[oldNumRows-1];
+            m_waitForSlowClick = m_currentCellCoords == coords &&
+                                        coords != wxGridNoCellCoords;
+            SetCurrentCell( coords );
+        }
+    }
+}
 
 
-            for ( i = oldNumRows;  i < m_numRows;  i++ )
-            {
-                bottom += m_rowHeights[i];
-                m_rowBottoms[i] = bottom;
-            }
-            CalcDimensions();
+void
+wxGrid::DoGridCellLeftDClick(wxMouseEvent& event,
+                             const wxGridCellCoords& coords,
+                             const wxPoint& pos)
+{
+    if ( XToEdgeOfCol(pos.x) < 0 && YToEdgeOfRow(pos.y) < 0 )
+    {
+        if ( !SendEvent(wxEVT_GRID_CELL_LEFT_DCLICK, coords, event) )
+        {
+            // we want double click to select a cell and start editing
+            // (i.e. to behave in same way as sequence of two slow clicks):
+            m_waitForSlowClick = true;
         }
         }
-        return TRUE;
+    }
+}
 
 
-        case wxGRIDTABLE_NOTIFY_ROWS_DELETED:
+void
+wxGrid::DoGridCellLeftUp(wxMouseEvent& event, const wxGridCellCoords& coords)
+{
+    if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
+    {
+        if (m_winCapture)
         {
         {
-            size_t pos = msg.GetCommandInt();
-            int numRows = msg.GetCommandInt2();
-            for ( i = 0;  i < numRows;  i++ )
-            {
-                m_rowHeights.Remove( pos );
-                m_rowBottoms.Remove( pos );
-            }
-            m_numRows -= numRows;
+            m_winCapture->ReleaseMouse();
+            m_winCapture = NULL;
+        }
 
 
-            if ( !m_numRows )
-            {
-                m_numCols = 0;
-                m_colWidths.Clear();
-                m_colRights.Clear();
-                m_currentCellCoords = wxGridNoCellCoords;
-            }
-            else
-            {
-                if ( m_currentCellCoords.GetRow() >= m_numRows )
-                    m_currentCellCoords.Set( 0, 0 );
+        if ( coords == m_currentCellCoords && m_waitForSlowClick && CanEnableCellControl() )
+        {
+            ClearSelection();
+            EnableCellEditControl();
 
 
-                int h = 0;
-                for ( i = 0;  i < m_numRows;  i++ )
-                {
-                    h += m_rowHeights[i];
-                    m_rowBottoms[i] = h;
-                }
-            }
+            wxGridCellAttr *attr = GetCellAttr(coords);
+            wxGridCellEditor *editor = attr->GetEditor(this, coords.GetRow(), coords.GetCol());
+            editor->StartingClick();
+            editor->DecRef();
+            attr->DecRef();
 
 
-            CalcDimensions();
+            m_waitForSlowClick = false;
         }
         }
-        return TRUE;
-
-        case wxGRIDTABLE_NOTIFY_COLS_INSERTED:
+        else if ( m_selectedBlockTopLeft != wxGridNoCellCoords &&
+             m_selectedBlockBottomRight != wxGridNoCellCoords )
         {
         {
-            size_t pos = msg.GetCommandInt();
-            int numCols = msg.GetCommandInt2();
-            for ( i = 0;  i < numCols;  i++ )
+            if ( m_selection )
             {
             {
-                m_colWidths.Insert( m_defaultColWidth, pos );
-                m_colRights.Insert( 0, pos );
+                m_selection->SelectBlock( m_selectedBlockTopLeft,
+                                          m_selectedBlockBottomRight,
+                                          event );
             }
             }
-            m_numCols += numCols;
 
 
-            int right = 0;
-            if ( pos > 0 ) right = m_colRights[pos-1];
+            m_selectedBlockTopLeft = wxGridNoCellCoords;
+            m_selectedBlockBottomRight = wxGridNoCellCoords;
 
 
-            for ( i = pos;  i < m_numCols;  i++ )
-            {
-                right += m_colWidths[i];
-                m_colRights[i] = right;
-            }
-            CalcDimensions();
+            // Show the edit control, if it has been hidden for
+            // drag-shrinking.
+            ShowCellEditControl();
         }
         }
-        return TRUE;
+    }
+    else if ( m_cursorMode == WXGRID_CURSOR_RESIZE_ROW )
+    {
+        ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
+        DoEndDragResizeRow(event);
+    }
+    else if ( m_cursorMode == WXGRID_CURSOR_RESIZE_COL )
+    {
+        ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
+        DoEndDragResizeCol(event);
+    }
 
 
-        case wxGRIDTABLE_NOTIFY_COLS_APPENDED:
+    m_dragLastPos = -1;
+}
+
+void
+wxGrid::DoGridMouseMoveEvent(wxMouseEvent& WXUNUSED(event),
+                             const wxGridCellCoords& coords,
+                             const wxPoint& pos)
+{
+    if ( coords.GetRow() < 0 || coords.GetCol() < 0 )
+    {
+        // out of grid cell area
+        ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
+        return;
+    }
+
+    int dragRow = YToEdgeOfRow( pos.y );
+    int dragCol = XToEdgeOfCol( pos.x );
+
+    // Dragging on the corner of a cell to resize in both
+    // directions is not implemented yet...
+    //
+    if ( dragRow >= 0 && dragCol >= 0 )
+    {
+        ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
+        return;
+    }
+
+    if ( dragRow >= 0 && CanDragGridSize() && CanDragRowSize(dragRow) )
+    {
+        if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
         {
         {
-            int numCols = msg.GetCommandInt();
-            for ( i = 0;  i < numCols;  i++ )
-            {
-                m_colWidths.Add( m_defaultColWidth );
-                m_colRights.Add( 0 );
-            }
+            m_dragRowOrCol = dragRow;
+            ChangeCursorMode(WXGRID_CURSOR_RESIZE_ROW, NULL, false);
+        }
+    }
+    // When using the native header window we can only resize the columns by
+    // dragging the dividers in it because we can't make it enter into the
+    // column resizing mode programmatically
+    else if ( dragCol >= 0 && !m_useNativeHeader &&
+                CanDragGridSize() && CanDragColSize(dragCol) )
+    {
+        if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
+        {
+            m_dragRowOrCol = dragCol;
+            ChangeCursorMode(WXGRID_CURSOR_RESIZE_COL, NULL, false);
+        }
+    }
+    else // Neither on a row or col edge
+    {
+        if ( m_cursorMode != WXGRID_CURSOR_SELECT_CELL )
+        {
+            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
+        }
+    }
+}
+
+void wxGrid::ProcessGridCellMouseEvent(wxMouseEvent& event)
+{
+    if ( event.Entering() || event.Leaving() )
+    {
+        // we don't care about these events but we must not reset m_isDragging
+        // if they happen so return before anything else is done
+        event.Skip();
+        return;
+    }
+
+    const wxPoint pos = CalcUnscrolledPosition(event.GetPosition());
+
+    // coordinates of the cell under mouse
+    wxGridCellCoords coords = XYToCell(pos);
+
+    int cell_rows, cell_cols;
+    GetCellSize( coords.GetRow(), coords.GetCol(), &cell_rows, &cell_cols );
+    if ( (cell_rows < 0) || (cell_cols < 0) )
+    {
+        coords.SetRow(coords.GetRow() + cell_rows);
+        coords.SetCol(coords.GetCol() + cell_cols);
+    }
+
+    if ( event.Dragging() )
+    {
+        if ( event.LeftIsDown() )
+            DoGridDragEvent(event, coords);
+        else
+            event.Skip();
+        return;
+    }
 
 
-            int oldNumCols = m_numCols;
-            m_numCols += numCols;
+    m_isDragging = false;
+    m_startDragPos = wxDefaultPosition;
 
 
-            int right = 0;
-            if ( oldNumCols > 0 ) right = m_colRights[oldNumCols-1];
+    // deal with various button presses
+    if ( event.IsButton() )
+    {
+        if ( coords != wxGridNoCellCoords )
+        {
+            DisableCellEditControl();
 
 
-            for ( i = oldNumCols;  i < m_numCols;  i++ )
-            {
-                right += m_colWidths[i];
-                m_colRights[i] = right;
-            }
-            CalcDimensions();
+            if ( event.LeftDown() )
+                DoGridCellLeftDown(event, coords, pos);
+            else if ( event.LeftDClick() )
+                DoGridCellLeftDClick(event, coords, pos);
+            else if ( event.RightDown() )
+                SendEvent(wxEVT_GRID_CELL_RIGHT_CLICK, coords, event);
+            else if ( event.RightDClick() )
+                SendEvent(wxEVT_GRID_CELL_RIGHT_DCLICK, coords, event);
         }
         }
-        return TRUE;
 
 
-        case wxGRIDTABLE_NOTIFY_COLS_DELETED:
+        // this one should be called even if we're not over any cell
+        if ( event.LeftUp() )
         {
         {
-            size_t pos = msg.GetCommandInt();
-            int numCols = msg.GetCommandInt2();
-            for ( i = 0;  i < numCols;  i++ )
-            {
-                m_colWidths.Remove( pos );
-                m_colRights.Remove( pos );
-            }
-            m_numCols -= numCols;
-
-            if ( !m_numCols )
-            {
-#if 0  // leave the row alone here so that AppendCols will work subsequently
-                m_numRows = 0;
-                m_rowHeights.Clear();
-                m_rowBottoms.Clear();
-#endif
-                m_currentCellCoords = wxGridNoCellCoords;
-            }
-            else
-            {
-                if ( m_currentCellCoords.GetCol() >= m_numCols )
-                    m_currentCellCoords.Set( 0, 0 );
-
-                int w = 0;
-                for ( i = 0;  i < m_numCols;  i++ )
-                {
-                    w += m_colWidths[i];
-                    m_colRights[i] = w;
-                }
-            }
-            CalcDimensions();
+            DoGridCellLeftUp(event, coords);
         }
         }
-        return TRUE;
     }
     }
-
-    return FALSE;
+    else if ( event.Moving() )
+    {
+        DoGridMouseMoveEvent(event, coords, pos);
+    }
+    else // unknown mouse event?
+    {
+        event.Skip();
+    }
 }
 
 }
 
-
-void wxGrid::CalcRowLabelsExposed( wxRegion& reg )
+// this function returns true only if the size really changed
+bool wxGrid::DoEndDragResizeLine(const wxGridOperations& oper)
 {
 {
-    wxRegionIterator iter( reg );
-    wxRect r;
+    if ( m_dragLastPos == -1 )
+        return false;
 
 
-    m_rowLabelsExposed.Empty();
+    const wxGridOperations& doper = oper.Dual();
 
 
-    int top, bottom;
-    while ( iter )
-    {
-        r = iter.GetRect();
+    const wxSize size = m_gridWin->GetClientSize();
 
 
-        // TODO: remove this when we can...
-        // There is a bug in wxMotif that gives garbage update
-        // rectangles if you jump-scroll a long way by clicking the
-        // scrollbar with middle button.  This is a work-around
-        //
-#if defined(__WXMOTIF__)
-        int cw, ch;
-        m_gridWin->GetClientSize( &cw, &ch );
-        if ( r.GetTop() > ch ) r.SetTop( 0 );
-        r.SetBottom( wxMin( r.GetBottom(), ch ) );
-#endif
+    const wxPoint ptOrigin = CalcUnscrolledPosition(wxPoint(0, 0));
 
 
-        // logical bounds of update region
-        //
-        int dummy;
-        CalcUnscrolledPosition( 0, r.GetTop(), &dummy, &top );
-        CalcUnscrolledPosition( 0, r.GetBottom(), &dummy, &bottom );
+    // erase the last line we drew
+    wxClientDC dc(m_gridWin);
+    PrepareDC(dc);
+    dc.SetLogicalFunction(wxINVERT);
 
 
-        // find the row labels within these bounds
-        //
-        int row;
-        for ( row = 0;  row < m_numRows;  row++ )
-        {
-            if ( GetRowBottom(row) < top )
-                continue;
+    const int posLineStart = oper.Select(ptOrigin);
+    const int posLineEnd = oper.Select(ptOrigin) + oper.Select(size);
 
 
-            if ( GetRowTop(row) > bottom )
-                break;
+    oper.DrawParallelLine(dc, posLineStart, posLineEnd, m_dragLastPos);
 
 
-            m_rowLabelsExposed.Add( row );
-        }
+    // temporarily hide the edit control before resizing
+    HideCellEditControl();
+    SaveEditControlValue();
 
 
-        iter++ ;
-    }
-}
+    // do resize the line
+    const int lineStart = oper.GetLineStartPos(this, m_dragRowOrCol);
+    const int lineSizeOld = oper.GetLineSize(this, m_dragRowOrCol);
+    oper.SetLineSize(this, m_dragRowOrCol,
+                     wxMax(m_dragLastPos - lineStart,
+                           oper.GetMinimalLineSize(this, m_dragRowOrCol)));
+    const bool
+        sizeChanged = oper.GetLineSize(this, m_dragRowOrCol) != lineSizeOld;
 
 
+    m_dragLastPos = -1;
 
 
-void wxGrid::CalcColLabelsExposed( wxRegion& reg )
-{
-    wxRegionIterator iter( reg );
-    wxRect r;
+    // refresh now if we're not frozen
+    if ( !GetBatchCount() )
+    {
+        // we need to refresh everything beyond the resized line in the header
+        // window
 
 
-    m_colLabelsExposed.Empty();
+        // get the position from which to refresh in the other direction
+        wxRect rect(CellToRect(oper.MakeCoords(m_dragRowOrCol, 0)));
+        rect.SetPosition(CalcScrolledPosition(rect.GetPosition()));
 
 
-    int left, right;
-    while ( iter )
-    {
-        r = iter.GetRect();
+        // we only need the ordinate (for rows) or abscissa (for columns) here,
+        // and need to cover the entire window in the other direction
+        oper.Select(rect) = 0;
 
 
-        // TODO: remove this when we can...
-        // There is a bug in wxMotif that gives garbage update
-        // rectangles if you jump-scroll a long way by clicking the
-        // scrollbar with middle button.  This is a work-around
-        //
-#if defined(__WXMOTIF__)
-        int cw, ch;
-        m_gridWin->GetClientSize( &cw, &ch );
-        if ( r.GetLeft() > cw ) r.SetLeft( 0 );
-        r.SetRight( wxMin( r.GetRight(), cw ) );
-#endif
+        wxRect rectHeader(rect.GetPosition(),
+                          oper.MakeSize
+                               (
+                                    oper.GetHeaderWindowSize(this),
+                                    doper.Select(size) - doper.Select(rect)
+                               ));
 
 
-        // logical bounds of update region
-        //
-        int dummy;
-        CalcUnscrolledPosition( r.GetLeft(), 0, &left, &dummy );
-        CalcUnscrolledPosition( r.GetRight(), 0, &right, &dummy );
+        oper.GetHeaderWindow(this)->Refresh(true, &rectHeader);
 
 
-        // find the cells within these bounds
-        //
-        int col;
-        for ( col = 0;  col < m_numCols;  col++ )
+
+        // also refresh the grid window: extend the rectangle
+        if ( m_table )
         {
         {
-            if ( GetColRight(col) < left )
-                continue;
+            oper.SelectSize(rect) = oper.Select(size);
 
 
-            if ( GetColLeft(col) > right )
-                break;
+            int subtractLines = 0;
+            int line = doper.PosToLine(this, posLineStart);
+            if ( line >= 0 )
+            {
+                // ensure that if we have a multi-cell block we redraw all of
+                // it by increasing the refresh area to cover it entirely if a
+                // part of it is affected
+                const int lineEnd = doper.PosToLine(this, posLineEnd, true);
+                for ( ; line < lineEnd; line++ )
+                {
+                    int cellLines = oper.Select(
+                        GetCellSize(oper.MakeCoords(m_dragRowOrCol, line)));
+                    if ( cellLines < subtractLines )
+                        subtractLines = cellLines;
+                }
+            }
 
 
-            m_colLabelsExposed.Add( col );
-        }
+            int startPos =
+                oper.GetLineStartPos(this, m_dragRowOrCol + subtractLines);
+            startPos = doper.CalcScrolledPosition(this, startPos);
 
 
-        iter++ ;
+            doper.Select(rect) = startPos;
+            doper.SelectSize(rect) = doper.Select(size) - startPos;
+
+            m_gridWin->Refresh(false, &rect);
+        }
     }
     }
-}
 
 
+    // show the edit control back again
+    ShowCellEditControl();
 
 
-void wxGrid::CalcCellsExposed( wxRegion& reg )
-{
-    wxRegionIterator iter( reg );
-    wxRect r;
+    return sizeChanged;
+}
 
 
-    m_cellsExposed.Empty();
-    m_rowsExposed.Empty();
-    m_colsExposed.Empty();
+void wxGrid::DoEndDragResizeRow(const wxMouseEvent& event)
+{
+    // TODO: generate RESIZING event, see #10754
 
 
-    int left, top, right, bottom;
-    while ( iter )
-    {
-        r = iter.GetRect();
+    if ( DoEndDragResizeLine(wxGridRowOperations()) )
+        SendGridSizeEvent(wxEVT_GRID_ROW_SIZE, m_dragRowOrCol, -1, event);
+}
 
 
-        // TODO: remove this when we can...
-        // There is a bug in wxMotif that gives garbage update
-        // rectangles if you jump-scroll a long way by clicking the
-        // scrollbar with middle button.  This is a work-around
-        //
-#if defined(__WXMOTIF__)
-        int cw, ch;
-        m_gridWin->GetClientSize( &cw, &ch );
-        if ( r.GetTop() > ch ) r.SetTop( 0 );
-        if ( r.GetLeft() > cw ) r.SetLeft( 0 );
-        r.SetRight( wxMin( r.GetRight(), cw ) );
-        r.SetBottom( wxMin( r.GetBottom(), ch ) );
-#endif
+void wxGrid::DoEndDragResizeCol(const wxMouseEvent& event)
+{
+    // TODO: generate RESIZING event, see #10754
 
 
-        // logical bounds of update region
-        //
-        CalcUnscrolledPosition( r.GetLeft(), r.GetTop(), &left, &top );
-        CalcUnscrolledPosition( r.GetRight(), r.GetBottom(), &right, &bottom );
+    if ( DoEndDragResizeLine(wxGridColumnOperations()) )
+        SendGridSizeEvent(wxEVT_GRID_COL_SIZE, -1, m_dragRowOrCol, event);
+}
 
 
-        // find the cells within these bounds
-        //
-        int row, col;
-        for ( row = 0;  row < m_numRows;  row++ )
-        {
-            if ( GetRowBottom(row) <= top )
-                continue;
+void wxGrid::DoStartMoveCol(int col)
+{
+    m_dragRowOrCol = col;
+}
 
 
-            if ( GetRowTop(row) > bottom )
-                break;
+void wxGrid::DoEndMoveCol(int pos)
+{
+    wxASSERT_MSG( m_dragRowOrCol != -1, "no matching DoStartMoveCol?" );
 
 
-            m_rowsExposed.Add( row );
+    if ( SendEvent(wxEVT_GRID_COL_MOVE, -1, m_dragRowOrCol) != -1 )
+        SetColPos(m_dragRowOrCol, pos);
+    //else: vetoed by user
 
 
-            for ( col = 0;  col < m_numCols;  col++ )
-            {
-                if ( GetColRight(col) <= left )
-                    continue;
+    m_dragRowOrCol = -1;
+}
 
 
-                if ( GetColLeft(col) > right )
-                    break;
+void wxGrid::RefreshAfterColPosChange()
+{
+    // recalculate the column rights as the column positions have changed,
+    // unless we calculate them dynamically because all columns widths are the
+    // same and it's easy to do
+    if ( !m_colWidths.empty() )
+    {
+        int colRight = 0;
+        for ( int colPos = 0; colPos < m_numCols; colPos++ )
+        {
+            int colID = GetColAt( colPos );
 
 
-                if ( m_colsExposed.Index( col ) == wxNOT_FOUND )
-                    m_colsExposed.Add( col );
-                m_cellsExposed.Add( wxGridCellCoords( row, col ) );
-            }
+            colRight += m_colWidths[colID];
+            m_colRights[colID] = colRight;
         }
         }
+    }
 
 
-        iter++;
+    // and make the changes visible
+    if ( m_useNativeHeader )
+    {
+        if ( m_colAt.empty() )
+            GetGridColHeader()->ResetColumnsOrder();
+        else
+            GetGridColHeader()->SetColumnsOrder(m_colAt);
+    }
+    else
+    {
+        m_colWindow->Refresh();
     }
     }
+    m_gridWin->Refresh();
 }
 
 }
 
-
-void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event )
+void wxGrid::SetColumnsOrder(const wxArrayInt& order)
 {
 {
-    int x, y, row;
-    wxPoint pos( event.GetPosition() );
-    CalcUnscrolledPosition( pos.x, pos.y, &x, &y );
+    m_colAt = order;
 
 
-    if ( event.Dragging() )
+    RefreshAfterColPosChange();
+}
+
+void wxGrid::SetColPos(int idx, int pos)
+{
+    // we're going to need m_colAt now, initialize it if needed
+    if ( m_colAt.empty() )
     {
     {
-        m_isDragging = TRUE;
+        m_colAt.reserve(m_numCols);
+        for ( int i = 0; i < m_numCols; i++ )
+            m_colAt.push_back(i);
+    }
 
 
-        if ( event.LeftIsDown() )
-        {
-            switch( m_cursorMode )
-            {
-                case WXGRID_CURSOR_RESIZE_ROW:
-                {
-                    int cw, ch, left, dummy;
-                    m_gridWin->GetClientSize( &cw, &ch );
-                    CalcUnscrolledPosition( 0, 0, &left, &dummy );
+    wxHeaderCtrl::MoveColumnInOrderArray(m_colAt, idx, pos);
 
 
-                    wxClientDC dc( m_gridWin );
-                    PrepareDC( dc );
-                    y = wxMax( y,
-                               GetRowTop(m_dragRowOrCol) +
-                               GetRowMinimalHeight(m_dragRowOrCol) );
-                    dc.SetLogicalFunction(wxINVERT);
-                    if ( m_dragLastPos >= 0 )
-                    {
-                        dc.DrawLine( left, m_dragLastPos, left+cw, m_dragLastPos );
-                    }
-                    dc.DrawLine( left, y, left+cw, y );
-                    m_dragLastPos = y;
-                }
-                break;
+    RefreshAfterColPosChange();
+}
 
 
-                case WXGRID_CURSOR_SELECT_ROW:
-                    if ( (row = YToRow( y )) >= 0  &&
-                         !IsInSelection( row, 0 ) )
-                    {
-                        SelectRow( row, TRUE );
-                    }
+void wxGrid::ResetColPos()
+{
+    m_colAt.clear();
 
 
-                // default label to suppress warnings about "enumeration value
-                // 'xxx' not handled in switch
-                default:
-                    break;
-            }
-        }
+    RefreshAfterColPosChange();
+}
+
+void wxGrid::EnableDragColMove( bool enable )
+{
+    if ( m_canDragColMove == enable )
         return;
         return;
+
+    if ( m_useNativeHeader )
+    {
+        // update all columns to make them [not] reorderable
+        GetGridColHeader()->SetColumnCount(m_numCols);
     }
 
     }
 
-    m_isDragging = FALSE;
+    m_canDragColMove = enable;
 
 
+    // we use to call ResetColPos() from here if !enable but this doesn't seem
+    // right as it would mean there would be no way to "freeze" the current
+    // columns order by disabling moving them after putting them in the desired
+    // order, whereas now you can always call ResetColPos() manually if needed
+}
 
 
-    // ------------ Entering or leaving the window
-    //
-    if ( event.Entering() || event.Leaving() )
+
+//
+// ------ interaction with data model
+//
+bool wxGrid::ProcessTableMessage( wxGridTableMessage& msg )
+{
+    switch ( msg.GetId() )
     {
     {
-        ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, m_rowLabelWin);
-    }
+        case wxGRIDTABLE_REQUEST_VIEW_GET_VALUES:
+            return GetModelValues();
 
 
+        case wxGRIDTABLE_REQUEST_VIEW_SEND_VALUES:
+            return SetModelValues();
 
 
-    // ------------ Left button pressed
-    //
-    else if ( event.LeftDown() )
-    {
-        // don't send a label click event for a hit on the
-        // edge of the row label - this is probably the user
-        // wanting to resize the row
-        //
-        if ( YToEdgeOfRow(y) < 0 )
-        {
-            row = YToRow(y);
-            if ( row >= 0  &&
-                 !SendEvent( wxEVT_GRID_LABEL_LEFT_CLICK, row, -1, event ) )
-            {
-                SelectRow( row, event.ShiftDown() );
-                ChangeCursorMode(WXGRID_CURSOR_SELECT_ROW, m_rowLabelWin);
-            }
-        }
-        else
-        {
-            // starting to drag-resize a row
-            //
-            if ( CanDragRowSize() )
-                ChangeCursorMode(WXGRID_CURSOR_RESIZE_ROW, m_rowLabelWin);
-        }
-    }
+        case wxGRIDTABLE_NOTIFY_ROWS_INSERTED:
+        case wxGRIDTABLE_NOTIFY_ROWS_APPENDED:
+        case wxGRIDTABLE_NOTIFY_ROWS_DELETED:
+        case wxGRIDTABLE_NOTIFY_COLS_INSERTED:
+        case wxGRIDTABLE_NOTIFY_COLS_APPENDED:
+        case wxGRIDTABLE_NOTIFY_COLS_DELETED:
+            return Redimension( msg );
 
 
+        default:
+            return false;
+    }
+}
 
 
-    // ------------ Left double click
-    //
-    else if (event.LeftDClick() )
+// The behaviour of this function depends on the grid table class
+// Clear() function. For the default wxGridStringTable class the
+// behaviour is to replace all cell contents with wxEmptyString but
+// not to change the number of rows or cols.
+//
+void wxGrid::ClearGrid()
+{
+    if ( m_table )
     {
     {
-        if ( YToEdgeOfRow(y) < 0 )
-        {
-            row = YToRow(y);
-            SendEvent( wxEVT_GRID_LABEL_LEFT_DCLICK, row, -1, event );
-        }
+        if (IsCellEditControlEnabled())
+            DisableCellEditControl();
+
+        m_table->Clear();
+        if (!GetBatchCount())
+            m_gridWin->Refresh();
     }
     }
+}
 
 
+bool
+wxGrid::DoModifyLines(bool (wxGridTableBase::*funcModify)(size_t, size_t),
+                      int pos, int num, bool WXUNUSED(updateLabels) )
+{
+    wxCHECK_MSG( m_created, false, "must finish creating the grid first" );
 
 
-    // ------------ Left button released
-    //
-    else if ( event.LeftUp() )
-    {
-        if ( m_cursorMode == WXGRID_CURSOR_RESIZE_ROW )
-        {
-            DoEndDragResizeRow();
+    if ( !m_table )
+        return false;
 
 
-            // Note: we are ending the event *after* doing
-            // default processing in this case
-            //
-            SendEvent( wxEVT_GRID_ROW_SIZE, m_dragRowOrCol, -1, event );
-        }
+    if ( IsCellEditControlEnabled() )
+        DisableCellEditControl();
 
 
-        ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, m_rowLabelWin);
-        m_dragLastPos = -1;
-    }
+    return (m_table->*funcModify)(pos, num);
 
 
+    // the table will have sent the results of the insert row
+    // operation to this view object as a grid table message
+}
 
 
-    // ------------ Right button down
-    //
-    else if ( event.RightDown() )
-    {
-        row = YToRow(y);
-        if ( !SendEvent( wxEVT_GRID_LABEL_RIGHT_CLICK, row, -1, event ) )
-        {
-            // no default action at the moment
-        }
-    }
+bool
+wxGrid::DoAppendLines(bool (wxGridTableBase::*funcAppend)(size_t),
+                      int num, bool WXUNUSED(updateLabels))
+{
+    wxCHECK_MSG( m_created, false, "must finish creating the grid first" );
 
 
+    if ( !m_table )
+        return false;
 
 
-    // ------------ Right double click
-    //
-    else if ( event.RightDClick() )
-    {
-        row = YToRow(y);
-        if ( !SendEvent( wxEVT_GRID_LABEL_RIGHT_DCLICK, row, -1, event ) )
-        {
-            // no default action at the moment
-        }
-    }
+    return (m_table->*funcAppend)(num);
+}
 
 
+// ----------------------------------------------------------------------------
+// event generation helpers
+// ----------------------------------------------------------------------------
 
 
-    // ------------ No buttons down and mouse moving
-    //
-    else if ( event.Moving() )
-    {
-        m_dragRowOrCol = YToEdgeOfRow( y );
-        if ( m_dragRowOrCol >= 0 )
-        {
-            if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
-            {
-                // don't capture the mouse yet
-                if ( CanDragRowSize() )
-                    ChangeCursorMode(WXGRID_CURSOR_RESIZE_ROW, m_rowLabelWin, FALSE);
-            }
-        }
-        else if ( m_cursorMode != WXGRID_CURSOR_SELECT_CELL )
-        {
-            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, m_rowLabelWin, FALSE);
-        }
-    }
-}
+bool
+wxGrid::SendGridSizeEvent(wxEventType type,
+                      int row, int col,
+                      const wxMouseEvent& mouseEv)
+{
+   int rowOrCol = row == -1 ? col : row;
+
+   wxGridSizeEvent gridEvt( GetId(),
+           type,
+           this,
+           rowOrCol,
+           mouseEv.GetX() + GetRowLabelSize(),
+           mouseEv.GetY() + GetColLabelSize(),
+           mouseEv);
+
+   return GetEventHandler()->ProcessEvent(gridEvt);
+}
+
+// Generate a grid event based on a mouse event and return:
+//  -1 if the event was vetoed
+//  +1 if the event was processed (but not vetoed)
+//   0 if the event wasn't handled
+int
+wxGrid::SendEvent(const wxEventType type,
+                  int row, int col,
+                  const wxMouseEvent& mouseEv)
+{
+   bool claimed, vetoed;
+
+   if ( type == wxEVT_GRID_RANGE_SELECT )
+   {
+       // Right now, it should _never_ end up here!
+       wxGridRangeSelectEvent gridEvt( GetId(),
+               type,
+               this,
+               m_selectedBlockTopLeft,
+               m_selectedBlockBottomRight,
+               true,
+               mouseEv);
+
+       claimed = GetEventHandler()->ProcessEvent(gridEvt);
+       vetoed = !gridEvt.IsAllowed();
+   }
+   else if ( type == wxEVT_GRID_LABEL_LEFT_CLICK ||
+             type == wxEVT_GRID_LABEL_LEFT_DCLICK ||
+             type == wxEVT_GRID_LABEL_RIGHT_CLICK ||
+             type == wxEVT_GRID_LABEL_RIGHT_DCLICK )
+   {
+       wxPoint pos = mouseEv.GetPosition();
+
+       if ( mouseEv.GetEventObject() == GetGridRowLabelWindow() )
+           pos.y += GetColLabelSize();
+       if ( mouseEv.GetEventObject() == GetGridColLabelWindow() )
+           pos.x += GetRowLabelSize();
+
+       wxGridEvent gridEvt( GetId(),
+               type,
+               this,
+               row, col,
+               pos.x,
+               pos.y,
+               false,
+               mouseEv);
+       claimed = GetEventHandler()->ProcessEvent(gridEvt);
+       vetoed = !gridEvt.IsAllowed();
+   }
+   else
+   {
+       wxGridEvent gridEvt( GetId(),
+               type,
+               this,
+               row, col,
+               mouseEv.GetX() + GetRowLabelSize(),
+               mouseEv.GetY() + GetColLabelSize(),
+               false,
+               mouseEv);
+
+       if ( type == wxEVT_GRID_CELL_BEGIN_DRAG )
+       {
+           // by default the dragging is not supported, the user code must
+           // explicitly allow the event for it to take place
+           gridEvt.Veto();
+       }
+              
+       claimed = GetEventHandler()->ProcessEvent(gridEvt);
+       vetoed = !gridEvt.IsAllowed();
+   }
+
+   // A Veto'd event may not be `claimed' so test this first
+   if (vetoed)
+       return -1;
+
+   return claimed ? 1 : 0;
+}
+
+// Generate a grid event of specified type, return value same as above
+//
+int
+wxGrid::SendEvent(const wxEventType type, int row, int col, const wxString& s)
+{
+    wxGridEvent gridEvt( GetId(), type, this, row, col );
+    gridEvt.SetString(s);
 
 
+    const bool claimed = GetEventHandler()->ProcessEvent(gridEvt);
 
 
-void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event )
+    // A Veto'd event may not be `claimed' so test this first
+    if ( !gridEvt.IsAllowed() )
+        return -1;
+
+    return claimed ? 1 : 0;
+}
+
+void wxGrid::OnPaint( wxPaintEvent& WXUNUSED(event) )
 {
 {
-    int x, y, col;
-    wxPoint pos( event.GetPosition() );
-    CalcUnscrolledPosition( pos.x, pos.y, &x, &y );
+    // needed to prevent zillions of paint events on MSW
+    wxPaintDC dc(this);
+}
 
 
-    if ( event.Dragging() )
+void wxGrid::Refresh(bool eraseb, const wxRect* rect)
+{
+    // Don't do anything if between Begin/EndBatch...
+    // EndBatch() will do all this on the last nested one anyway.
+    if ( m_created && !GetBatchCount() )
     {
     {
-        m_isDragging = TRUE;
+        // Refresh to get correct scrolled position:
+        wxScrolledWindow::Refresh(eraseb, rect);
 
 
-        if ( event.LeftIsDown() )
+        if (rect)
         {
         {
-            switch( m_cursorMode )
-            {
-                case WXGRID_CURSOR_RESIZE_COL:
-                {
-                    int cw, ch, dummy, top;
-                    m_gridWin->GetClientSize( &cw, &ch );
-                    CalcUnscrolledPosition( 0, 0, &dummy, &top );
+            int rect_x, rect_y, rectWidth, rectHeight;
+            int width_label, width_cell, height_label, height_cell;
+            int x, y;
 
 
-                    wxClientDC dc( m_gridWin );
-                    PrepareDC( dc );
+            // Copy rectangle can get scroll offsets..
+            rect_x = rect->GetX();
+            rect_y = rect->GetY();
+            rectWidth = rect->GetWidth();
+            rectHeight = rect->GetHeight();
 
 
-                    x = wxMax( x, GetColLeft(m_dragRowOrCol) +
-                                  GetColMinimalWidth(m_dragRowOrCol));
-                    dc.SetLogicalFunction(wxINVERT);
-                    if ( m_dragLastPos >= 0 )
-                    {
-                        dc.DrawLine( m_dragLastPos, top, m_dragLastPos, top+ch );
-                    }
-                    dc.DrawLine( x, top, x, top+ch );
-                    m_dragLastPos = x;
-                }
-                break;
+            width_label = m_rowLabelWidth - rect_x;
+            if (width_label > rectWidth)
+                width_label = rectWidth;
 
 
-                case WXGRID_CURSOR_SELECT_COL:
-                    if ( (col = XToCol( x )) >= 0  &&
-                         !IsInSelection( 0, col ) )
-                    {
-                        SelectCol( col, TRUE );
-                    }
+            height_label = m_colLabelHeight - rect_y;
+            if (height_label > rectHeight)
+                height_label = rectHeight;
 
 
-                // default label to suppress warnings about "enumeration value
-                // 'xxx' not handled in switch
-                default:
-                    break;
+            if (rect_x > m_rowLabelWidth)
+            {
+                x = rect_x - m_rowLabelWidth;
+                width_cell = rectWidth;
+            }
+            else
+            {
+                x = 0;
+                width_cell = rectWidth - (m_rowLabelWidth - rect_x);
             }
             }
-        }
-        return;
-    }
 
 
-    m_isDragging = FALSE;
+            if (rect_y > m_colLabelHeight)
+            {
+                y = rect_y - m_colLabelHeight;
+                height_cell = rectHeight;
+            }
+            else
+            {
+                y = 0;
+                height_cell = rectHeight - (m_colLabelHeight - rect_y);
+            }
 
 
+            // Paint corner label part intersecting rect.
+            if ( width_label > 0 && height_label > 0 )
+            {
+                wxRect anotherrect(rect_x, rect_y, width_label, height_label);
+                m_cornerLabelWin->Refresh(eraseb, &anotherrect);
+            }
 
 
-    // ------------ Entering or leaving the window
-    //
-    if ( event.Entering() || event.Leaving() )
-    {
-        ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, m_colLabelWin);
-    }
+            // Paint col labels part intersecting rect.
+            if ( width_cell > 0 && height_label > 0 )
+            {
+                wxRect anotherrect(x, rect_y, width_cell, height_label);
+                m_colWindow->Refresh(eraseb, &anotherrect);
+            }
 
 
+            // Paint row labels part intersecting rect.
+            if ( width_label > 0 && height_cell > 0 )
+            {
+                wxRect anotherrect(rect_x, y, width_label, height_cell);
+                m_rowLabelWin->Refresh(eraseb, &anotherrect);
+            }
 
 
-    // ------------ Left button pressed
-    //
-    else if ( event.LeftDown() )
-    {
-        // don't send a label click event for a hit on the
-        // edge of the col label - this is probably the user
-        // wanting to resize the col
-        //
-        if ( XToEdgeOfCol(x) < 0 )
-        {
-            col = XToCol(x);
-            if ( col >= 0  &&
-                 !SendEvent( wxEVT_GRID_LABEL_LEFT_CLICK, -1, col, event ) )
+            // Paint cell area part intersecting rect.
+            if ( width_cell > 0 && height_cell > 0 )
             {
             {
-                SelectCol( col, event.ShiftDown() );
-                ChangeCursorMode(WXGRID_CURSOR_SELECT_COL, m_colLabelWin);
+                wxRect anotherrect(x, y, width_cell, height_cell);
+                m_gridWin->Refresh(eraseb, &anotherrect);
             }
         }
         else
         {
             }
         }
         else
         {
-            // starting to drag-resize a col
-            //
-            if ( CanDragColSize() )
-                ChangeCursorMode(WXGRID_CURSOR_RESIZE_COL, m_colLabelWin);
+            m_cornerLabelWin->Refresh(eraseb, NULL);
+            m_colWindow->Refresh(eraseb, NULL);
+            m_rowLabelWin->Refresh(eraseb, NULL);
+            m_gridWin->Refresh(eraseb, NULL);
         }
     }
         }
     }
+}
 
 
+void wxGrid::OnSize(wxSizeEvent& WXUNUSED(event))
+{
+    if (m_targetWindow != this) // check whether initialisation has been done
+    {
+        // reposition our children windows
+        CalcWindowSizes();
+    }
+}
 
 
-    // ------------ Left double click
-    //
-    if ( event.LeftDClick() )
+void wxGrid::OnKeyDown( wxKeyEvent& event )
+{
+    if ( m_inOnKeyDown )
     {
     {
-        if ( XToEdgeOfCol(x) < 0 )
-        {
-            col = XToCol(x);
-            SendEvent( wxEVT_GRID_LABEL_LEFT_DCLICK, -1, col, event );
-        }
+        // shouldn't be here - we are going round in circles...
+        //
+        wxFAIL_MSG( wxT("wxGrid::OnKeyDown called while already active") );
     }
 
     }
 
+    m_inOnKeyDown = true;
 
 
-    // ------------ Left button released
-    //
-    else if ( event.LeftUp() )
+    // propagate the event up and see if it gets processed
+    wxWindow *parent = GetParent();
+    wxKeyEvent keyEvt( event );
+    keyEvt.SetEventObject( parent );
+
+    if ( !parent->GetEventHandler()->ProcessEvent( keyEvt ) )
     {
     {
-        if ( m_cursorMode == WXGRID_CURSOR_RESIZE_COL )
+        if (GetLayoutDirection() == wxLayout_RightToLeft)
         {
         {
-            DoEndDragResizeCol();
-
-            // Note: we are ending the event *after* doing
-            // default processing in this case
-            //
-            SendEvent( wxEVT_GRID_COL_SIZE, -1, m_dragRowOrCol, event );
+            if (event.GetKeyCode() == WXK_RIGHT)
+                event.m_keyCode = WXK_LEFT;
+            else if (event.GetKeyCode() == WXK_LEFT)
+                event.m_keyCode = WXK_RIGHT;
         }
 
         }
 
-        ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, m_colLabelWin);
-        m_dragLastPos  = -1;
-    }
+        // try local handlers
+        switch ( event.GetKeyCode() )
+        {
+            case WXK_UP:
+                if ( event.ControlDown() )
+                    MoveCursorUpBlock( event.ShiftDown() );
+                else
+                    MoveCursorUp( event.ShiftDown() );
+                break;
 
 
+            case WXK_DOWN:
+                if ( event.ControlDown() )
+                    MoveCursorDownBlock( event.ShiftDown() );
+                else
+                    MoveCursorDown( event.ShiftDown() );
+                break;
 
 
-    // ------------ Right button down
-    //
-    else if ( event.RightDown() )
-    {
-        col = XToCol(x);
-        if ( !SendEvent( wxEVT_GRID_LABEL_RIGHT_CLICK, -1, col, event ) )
-        {
-            // no default action at the moment
-        }
-    }
+            case WXK_LEFT:
+                if ( event.ControlDown() )
+                    MoveCursorLeftBlock( event.ShiftDown() );
+                else
+                    MoveCursorLeft( event.ShiftDown() );
+                break;
 
 
+            case WXK_RIGHT:
+                if ( event.ControlDown() )
+                    MoveCursorRightBlock( event.ShiftDown() );
+                else
+                    MoveCursorRight( event.ShiftDown() );
+                break;
 
 
-    // ------------ Right double click
-    //
-    else if ( event.RightDClick() )
-    {
-        col = XToCol(x);
-        if ( !SendEvent( wxEVT_GRID_LABEL_RIGHT_DCLICK, -1, col, event ) )
-        {
-            // no default action at the moment
-        }
-    }
+            case WXK_RETURN:
+            case WXK_NUMPAD_ENTER:
+                if ( event.ControlDown() )
+                {
+                    event.Skip();  // to let the edit control have the return
+                }
+                else
+                {
+                    if ( GetGridCursorRow() < GetNumberRows()-1 )
+                    {
+                        MoveCursorDown( event.ShiftDown() );
+                    }
+                    else
+                    {
+                        // at the bottom of a column
+                        DisableCellEditControl();
+                    }
+                }
+                break;
 
 
+            case WXK_ESCAPE:
+                ClearSelection();
+                break;
 
 
-    // ------------ No buttons down and mouse moving
-    //
-    else if ( event.Moving() )
-    {
-        m_dragRowOrCol = XToEdgeOfCol( x );
-        if ( m_dragRowOrCol >= 0 )
-        {
-            if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
-            {
-                // don't capture the cursor yet
-                if ( CanDragColSize() )
-                    ChangeCursorMode(WXGRID_CURSOR_RESIZE_COL, m_colLabelWin, FALSE);
-            }
-        }
-        else if ( m_cursorMode != WXGRID_CURSOR_SELECT_CELL )
-        {
-            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL, m_colLabelWin, FALSE);
+            case WXK_TAB:
+                {
+                    // send an event to the grid's parents for custom handling
+                    wxGridEvent gridEvt(GetId(), wxEVT_GRID_TABBING, this,
+                                        GetGridCursorRow(), GetGridCursorCol(),
+                                        -1, -1, false, event);
+                    if ( ProcessWindowEvent(gridEvt) )
+                    {
+                        // the event has been handled so no need for more processing
+                        break;
+                    }
+                }
+                DoGridProcessTab( event );
+                break;
+
+            case WXK_HOME:
+                GoToCell(event.ControlDown() ? 0
+                                             : m_currentCellCoords.GetRow(),
+                         0);
+                break;
+
+            case WXK_END:
+                GoToCell(event.ControlDown() ? m_numRows - 1
+                                             : m_currentCellCoords.GetRow(),
+                         m_numCols - 1);
+                break;
+
+            case WXK_PAGEUP:
+                MovePageUp();
+                break;
+
+            case WXK_PAGEDOWN:
+                MovePageDown();
+                break;
+
+            case WXK_SPACE:
+                // Ctrl-Space selects the current column, Shift-Space -- the
+                // current row and Ctrl-Shift-Space -- everything
+                switch ( m_selection ? event.GetModifiers() : wxMOD_NONE )
+                {
+                    case wxMOD_CONTROL:
+                        m_selection->SelectCol(m_currentCellCoords.GetCol());
+                        break;
+
+                    case wxMOD_SHIFT:
+                        m_selection->SelectRow(m_currentCellCoords.GetRow());
+                        break;
+
+                    case wxMOD_CONTROL | wxMOD_SHIFT:
+                        m_selection->SelectBlock(0, 0,
+                                                 m_numRows - 1, m_numCols - 1);
+                        break;
+
+                    case wxMOD_NONE:
+                        if ( !IsEditable() )
+                        {
+                            MoveCursorRight(false);
+                            break;
+                        }
+                        //else: fall through
+
+                    default:
+                        event.Skip();
+                }
+                break;
+
+            default:
+                event.Skip();
+                break;
         }
     }
         }
     }
-}
 
 
+    m_inOnKeyDown = false;
+}
 
 
-void wxGrid::ProcessCornerLabelMouseEvent( wxMouseEvent& event )
+void wxGrid::OnKeyUp( wxKeyEvent& event )
 {
 {
-    if ( event.LeftDown() )
+    // try local handlers
+    //
+    if ( event.GetKeyCode() == WXK_SHIFT )
     {
     {
-        // indicate corner label by having both row and
-        // col args == -1
-        //
-        if ( !SendEvent( wxEVT_GRID_LABEL_LEFT_CLICK, -1, -1, event ) )
+        if ( m_selectedBlockTopLeft != wxGridNoCellCoords &&
+             m_selectedBlockBottomRight != wxGridNoCellCoords )
         {
         {
-            SelectAll();
+            if ( m_selection )
+            {
+                m_selection->SelectBlock(
+                    m_selectedBlockTopLeft,
+                    m_selectedBlockBottomRight,
+                    event);
+            }
         }
         }
-    }
 
 
-    else if ( event.LeftDClick() )
-    {
-        SendEvent( wxEVT_GRID_LABEL_LEFT_DCLICK, -1, -1, event );
+        m_selectedBlockTopLeft = wxGridNoCellCoords;
+        m_selectedBlockBottomRight = wxGridNoCellCoords;
+        m_selectedBlockCorner = wxGridNoCellCoords;
     }
     }
+}
 
 
-    else if ( event.RightDown() )
+void wxGrid::OnChar( wxKeyEvent& event )
+{
+    // is it possible to edit the current cell at all?
+    if ( !IsCellEditControlEnabled() && CanEnableCellControl() )
     {
     {
-        if ( !SendEvent( wxEVT_GRID_LABEL_RIGHT_CLICK, -1, -1, event ) )
+        // yes, now check whether the cells editor accepts the key
+        int row = m_currentCellCoords.GetRow();
+        int col = m_currentCellCoords.GetCol();
+        wxGridCellAttr *attr = GetCellAttr(row, col);
+        wxGridCellEditor *editor = attr->GetEditor(this, row, col);
+
+        // <F2> is special and will always start editing, for
+        // other keys - ask the editor itself
+        if ( (event.GetKeyCode() == WXK_F2 && !event.HasModifiers())
+             || editor->IsAcceptedKey(event) )
         {
         {
-            // no default action at the moment
-        }
-    }
+            // ensure cell is visble
+            MakeCellVisible(row, col);
+            EnableCellEditControl();
 
 
-    else if ( event.RightDClick() )
-    {
-        if ( !SendEvent( wxEVT_GRID_LABEL_RIGHT_DCLICK, -1, -1, event ) )
+            // a problem can arise if the cell is not completely
+            // visible (even after calling MakeCellVisible the
+            // control is not created and calling StartingKey will
+            // crash the app
+            if ( event.GetKeyCode() != WXK_F2 && editor->IsCreated() && m_cellEditCtrlEnabled )
+                editor->StartingKey(event);
+        }
+        else
         {
         {
-            // no default action at the moment
+            event.Skip();
         }
         }
+
+        editor->DecRef();
+        attr->DecRef();
+    }
+    else
+    {
+        event.Skip();
     }
 }
 
     }
 }
 
-void wxGrid::ChangeCursorMode(CursorMode mode,
-                              wxWindow *win,
-                              bool captureMouse)
+void wxGrid::OnEraseBackground(wxEraseEvent&)
 {
 {
-#ifdef __WXDEBUG__
-    static const wxChar *cursorModes[] =
-    {
-        _T("SELECT_CELL"),
-        _T("RESIZE_ROW"),
-        _T("RESIZE_COL"),
-        _T("SELECT_ROW"),
-        _T("SELECT_COL")
-    };
-
-    wxLogTrace(_T("grid"),
-               _T("wxGrid cursor mode (mouse capture for %s): %s -> %s"),
-               win == m_colLabelWin ? _T("colLabelWin")
-                                    : win ? _T("rowLabelWin")
-                                          : _T("gridWin"),
-               cursorModes[m_cursorMode], cursorModes[mode]);
-#endif // __WXDEBUG__
+}
 
 
-    if ( mode == m_cursorMode )
-        return;
+void wxGrid::DoGridProcessTab(wxKeyboardState& kbdState)
+{
+    const bool isForwardTab = !kbdState.ShiftDown();
 
 
-    if ( !win )
+    // TAB processing only changes when we are at the borders of the grid, so
+    // let's first handle the common behaviour when we are not at the border.
+    if ( isForwardTab )
     {
     {
-        // by default use the grid itself
-        win = m_gridWin;
+        if ( GetGridCursorCol() < GetNumberCols() - 1 )
+        {
+            MoveCursorRight( false );
+            return;
+        }
     }
     }
-
-    if ( m_winCapture )
+    else // going back
     {
     {
-        m_winCapture->ReleaseMouse();
-        m_winCapture = (wxWindow *)NULL;
+        if ( GetGridCursorCol() )
+        {
+            MoveCursorLeft( false );
+            return;
+        }
     }
 
     }
 
-    m_cursorMode = mode;
 
 
-    switch ( m_cursorMode )
+    // We only get here if the cursor is at the border of the grid, apply the
+    // configured behaviour.
+    switch ( m_tabBehaviour )
     {
     {
-        case WXGRID_CURSOR_RESIZE_ROW:
-            win->SetCursor( m_rowResizeCursor );
+        case Tab_Stop:
+            // Nothing special to do, we remain at the current cell.
             break;
 
             break;
 
-        case WXGRID_CURSOR_RESIZE_COL:
-            win->SetCursor( m_colResizeCursor );
+        case Tab_Wrap:
+            // Go to the beginning of the next or the end of the previous row.
+            if ( isForwardTab )
+            {
+                if ( GetGridCursorRow() < GetNumberRows() - 1 )
+                {
+                    GoToCell( GetGridCursorRow() + 1, 0 );
+                    return;
+                }
+            }
+            else
+            {
+                if ( GetGridCursorRow() > 0 )
+                {
+                    GoToCell( GetGridCursorRow() - 1, GetNumberCols() - 1 );
+                    return;
+                }
+            }
             break;
 
             break;
 
-        default:
-            win->SetCursor( *wxSTANDARD_CURSOR );
+        case Tab_Leave:
+            if ( Navigate( isForwardTab ? wxNavigationKeyEvent::IsForward
+                                        : wxNavigationKeyEvent::IsBackward ) )
+                return;
+            break;
     }
 
     }
 
-    // we need to capture mouse when resizing
-    bool resize = m_cursorMode == WXGRID_CURSOR_RESIZE_ROW ||
-                  m_cursorMode == WXGRID_CURSOR_RESIZE_COL;
-
-    if ( captureMouse && resize )
-    {
-        win->CaptureMouse();
-        m_winCapture = win;
-    }
+    // If we remain in this cell, stop editing it if we were doing so.
+    DisableCellEditControl();
 }
 
 }
 
-void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
+bool wxGrid::SetCurrentCell( const wxGridCellCoords& coords )
 {
 {
-    int x, y;
-    wxPoint pos( event.GetPosition() );
-    CalcUnscrolledPosition( pos.x, pos.y, &x, &y );
+    if ( SendEvent(wxEVT_GRID_SELECT_CELL, coords) == -1 )
+    {
+        // the event has been vetoed - do nothing
+        return false;
+    }
 
 
-    wxGridCellCoords coords;
-    XYToCell( x, y, coords );
+#if !defined(__WXMAC__)
+    wxClientDC dc( m_gridWin );
+    PrepareDC( dc );
+#endif
 
 
-    if ( event.Dragging() )
+    if ( m_currentCellCoords != wxGridNoCellCoords )
     {
     {
-        //wxLogDebug("pos(%d, %d) coords(%d, %d)", pos.x, pos.y, coords.GetRow(), coords.GetCol());
+        DisableCellEditControl();
 
 
-        // Don't start doing anything until the mouse has been drug at
-        // least 3 pixels in any direction...
-        if (! m_isDragging)
+        if ( IsVisible( m_currentCellCoords, false ) )
         {
         {
-            if (m_startDragPos == wxDefaultPosition)
+            wxRect r;
+            r = BlockToDeviceRect( m_currentCellCoords, m_currentCellCoords );
+            if ( !m_gridLinesEnabled )
             {
             {
-                m_startDragPos = pos;
-                return;
+                r.x--;
+                r.y--;
+                r.width++;
+                r.height++;
             }
             }
-            if (abs(m_startDragPos.x - pos.x) < 4 && abs(m_startDragPos.y - pos.y) < 4)
-                return;
+
+            wxGridCellCoordsArray cells = CalcCellsExposed( r );
+
+            // Otherwise refresh redraws the highlight!
+            m_currentCellCoords = coords;
+
+#if defined(__WXMAC__)
+            m_gridWin->Refresh(true /*, & r */);
+#else
+            DrawGridCellArea( dc, cells );
+            DrawAllGridLines( dc, r );
+#endif
         }
         }
+    }
 
 
-        m_isDragging = TRUE;
-        if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
-        {
-            // Hide the edit control, so it
-            // won't interfer with drag-shrinking.
-            if ( IsCellEditControlEnabled() )
-            {
-                HideCellEditControl();
-                SaveEditControlValue();
-            }
+    m_currentCellCoords = coords;
 
 
-            // Have we captured the mouse yet?
-            if (! m_winCapture)
-            {
-                m_winCapture = m_gridWin;
-                m_winCapture->CaptureMouse();
-            }
+    wxGridCellAttr *attr = GetCellAttr( coords );
+#if !defined(__WXMAC__)
+    DrawCellHighlight( dc, attr );
+#endif
+    attr->DecRef();
 
 
-            if ( coords != wxGridNoCellCoords )
-            {
-                if ( !IsSelection() )
-                {
-                    SelectBlock( coords, coords );
-                }
-                else
-                {
-                    SelectBlock( m_currentCellCoords, coords );
-                }
+    return true;
+}
 
 
-                if (! IsVisible(coords))
-                {
-                    MakeCellVisible(coords);
-                    // TODO: need to introduce a delay or something here.  The
-                    // scrolling is way to fast, at least on MSW.
-                }
-            }
-        }
-        else if ( m_cursorMode == WXGRID_CURSOR_RESIZE_ROW )
-        {
-            int cw, ch, left, dummy;
-            m_gridWin->GetClientSize( &cw, &ch );
-            CalcUnscrolledPosition( 0, 0, &left, &dummy );
+void
+wxGrid::UpdateBlockBeingSelected(int topRow, int leftCol,
+                                 int bottomRow, int rightCol)
+{
+    MakeCellVisible(m_selectedBlockCorner);
+    m_selectedBlockCorner = wxGridCellCoords(bottomRow, rightCol);
 
 
-            wxClientDC dc( m_gridWin );
-            PrepareDC( dc );
-            y = wxMax( y, GetRowTop(m_dragRowOrCol) +
-                          GetRowMinimalHeight(m_dragRowOrCol) );
-            dc.SetLogicalFunction(wxINVERT);
-            if ( m_dragLastPos >= 0 )
-            {
-                dc.DrawLine( left, m_dragLastPos, left+cw, m_dragLastPos );
-            }
-            dc.DrawLine( left, y, left+cw, y );
-            m_dragLastPos = y;
-        }
-        else if ( m_cursorMode == WXGRID_CURSOR_RESIZE_COL )
+    if ( m_selection )
+    {
+        switch ( m_selection->GetSelectionMode() )
         {
         {
-            int cw, ch, dummy, top;
-            m_gridWin->GetClientSize( &cw, &ch );
-            CalcUnscrolledPosition( 0, 0, &dummy, &top );
+            default:
+                wxFAIL_MSG( "unknown selection mode" );
+                // fall through
 
 
-            wxClientDC dc( m_gridWin );
-            PrepareDC( dc );
-            x = wxMax( x, GetColLeft(m_dragRowOrCol) +
-                          GetColMinimalWidth(m_dragRowOrCol) );
-            dc.SetLogicalFunction(wxINVERT);
-            if ( m_dragLastPos >= 0 )
-            {
-                dc.DrawLine( m_dragLastPos, top, m_dragLastPos, top+ch );
-            }
-            dc.DrawLine( x, top, x, top+ch );
-            m_dragLastPos = x;
-        }
+            case wxGridSelectCells:
+                // arbitrary blocks selection allowed so just use the cell
+                // coordinates as is
+                break;
 
 
-        return;
+            case wxGridSelectRows:
+                // only full rows selection allowd, ensure that we do select
+                // full rows
+                leftCol = 0;
+                rightCol = GetNumberCols() - 1;
+                break;
+
+            case wxGridSelectColumns:
+                // same as above but for columns
+                topRow = 0;
+                bottomRow = GetNumberRows() - 1;
+                break;
+
+            case wxGridSelectRowsOrColumns:
+                // in this mode we can select only full rows or full columns so
+                // it doesn't make sense to select blocks at all (and we can't
+                // extend the block because there is no preferred direction, we
+                // could only extend it to cover the entire grid but this is
+                // not useful)
+                return;
+        }
     }
 
     }
 
-    m_isDragging = FALSE;
-    m_startDragPos = wxDefaultPosition;
+    EnsureFirstLessThanSecond(topRow, bottomRow);
+    EnsureFirstLessThanSecond(leftCol, rightCol);
 
 
-    // VZ: if we do this, the mode is reset to WXGRID_CURSOR_SELECT_CELL
-    //     immediately after it becomes WXGRID_CURSOR_RESIZE_ROW/COL under
-    //     wxGTK
-#if 0
-    if ( event.Entering() || event.Leaving() )
+    wxGridCellCoords updateTopLeft = wxGridCellCoords(topRow, leftCol),
+                     updateBottomRight = wxGridCellCoords(bottomRow, rightCol);
+
+    // First the case that we selected a completely new area
+    if ( m_selectedBlockTopLeft == wxGridNoCellCoords ||
+         m_selectedBlockBottomRight == wxGridNoCellCoords )
     {
     {
-        ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
-        m_gridWin->SetCursor( *wxSTANDARD_CURSOR );
+        wxRect rect;
+        rect = BlockToDeviceRect( wxGridCellCoords ( topRow, leftCol ),
+                                  wxGridCellCoords ( bottomRow, rightCol ) );
+        m_gridWin->Refresh( false, &rect );
     }
     }
-    else
-#endif // 0
 
 
-    // ------------ Left button pressed
-    //
-    if ( event.LeftDown() && coords != wxGridNoCellCoords )
+    // Now handle changing an existing selection area.
+    else if ( m_selectedBlockTopLeft != updateTopLeft ||
+              m_selectedBlockBottomRight != updateBottomRight )
     {
     {
-        if ( !event.ShiftDown() && !event.ControlDown() )
-            ClearSelection();
-        if ( event.ShiftDown() )
-        {
-            SelectBlock( m_currentCellCoords, coords );
-        }
-        else if ( XToEdgeOfCol(x) < 0  &&
-                  YToEdgeOfRow(y) < 0 )
-        {
-            if ( !SendEvent( wxEVT_GRID_CELL_LEFT_CLICK,
-                             coords.GetRow(),
-                             coords.GetCol(),
-                             event ) )
-            {
-                DisableCellEditControl();
-                MakeCellVisible( coords );
-
-                // if this is the second click on this cell then start
-                // the edit control
-                if ( m_waitForSlowClick &&
-                     (coords == m_currentCellCoords) &&
-                     CanEnableCellControl())
-                {
-                    EnableCellEditControl();
-
-                    wxGridCellAttr* attr = GetCellAttr(m_currentCellCoords);
-                    wxGridCellEditor *editor = attr->GetEditor(this,
-                                                               coords.GetRow(),
-                                                               coords.GetCol());
-                    editor->StartingClick();
-                    editor->DecRef();
-                    attr->DecRef();
+        // Compute two optimal update rectangles:
+        // Either one rectangle is a real subset of the
+        // other, or they are (almost) disjoint!
+        wxRect  rect[4];
+        bool    need_refresh[4];
+        need_refresh[0] =
+        need_refresh[1] =
+        need_refresh[2] =
+        need_refresh[3] = false;
+        int     i;
 
 
-                    m_waitForSlowClick = FALSE;
-                }
-                else
-                {
-                    m_selection->ToggleCellSelection( coords.GetRow(),
-                                                      coords.GetCol() );
-                    m_selectingTopLeft = wxGridNoCellCoords;
-                    m_selectingBottomRight = wxGridNoCellCoords;
-                    SetCurrentCell( coords );
-                    m_waitForSlowClick = TRUE;
-                }
-            }
-        }
-    }
+        // Store intermediate values
+        wxCoord oldLeft = m_selectedBlockTopLeft.GetCol();
+        wxCoord oldTop = m_selectedBlockTopLeft.GetRow();
+        wxCoord oldRight = m_selectedBlockBottomRight.GetCol();
+        wxCoord oldBottom = m_selectedBlockBottomRight.GetRow();
 
 
+        // Determine the outer/inner coordinates.
+        EnsureFirstLessThanSecond(oldLeft, leftCol);
+        EnsureFirstLessThanSecond(oldTop, topRow);
+        EnsureFirstLessThanSecond(rightCol, oldRight);
+        EnsureFirstLessThanSecond(bottomRow, oldBottom);
 
 
-    // ------------ Left double click
-    //
-    else if ( event.LeftDClick() && coords != wxGridNoCellCoords )
-    {
-        DisableCellEditControl();
+        // Now, either the stuff marked old is the outer
+        // rectangle or we don't have a situation where one
+        // is contained in the other.
 
 
-        if ( XToEdgeOfCol(x) < 0  &&  YToEdgeOfRow(y) < 0 )
+        if ( oldLeft < leftCol )
         {
         {
-            SendEvent( wxEVT_GRID_CELL_LEFT_DCLICK,
-                       coords.GetRow(),
-                       coords.GetCol(),
-                       event );
+            // Refresh the newly selected or deselected
+            // area to the left of the old or new selection.
+            need_refresh[0] = true;
+            rect[0] = BlockToDeviceRect(
+                wxGridCellCoords( oldTop,  oldLeft ),
+                wxGridCellCoords( oldBottom, leftCol - 1 ) );
         }
         }
-    }
 
 
-
-    // ------------ Left button released
-    //
-    else if ( event.LeftUp() )
-    {
-        if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
+        if ( oldTop < topRow )
         {
         {
-            if ( m_selectingTopLeft != wxGridNoCellCoords &&
-                 m_selectingBottomRight != wxGridNoCellCoords )
-            {
-                 m_selection->SelectBlock( m_selectingTopLeft.GetRow(),
-                                           m_selectingTopLeft.GetCol(),
-                                           m_selectingBottomRight.GetRow(),
-                                           m_selectingBottomRight.GetCol() );
-                if (m_winCapture)
-                {
-                    m_winCapture->ReleaseMouse();
-                    m_winCapture = NULL;
-                }
-                SendEvent( wxEVT_GRID_RANGE_SELECT, -1, -1, event );
-            }
-
-            // Show the edit control, if it has been hidden for
-            // drag-shrinking.
-            ShowCellEditControl();
+            // Refresh the newly selected or deselected
+            // area above the old or new selection.
+            need_refresh[1] = true;
+            rect[1] = BlockToDeviceRect(
+                wxGridCellCoords( oldTop, leftCol ),
+                wxGridCellCoords( topRow - 1, rightCol ) );
         }
         }
-        else if ( m_cursorMode == WXGRID_CURSOR_RESIZE_ROW )
-        {
-            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
-            DoEndDragResizeRow();
 
 
-            // Note: we are ending the event *after* doing
-            // default processing in this case
-            //
-            SendEvent( wxEVT_GRID_ROW_SIZE, m_dragRowOrCol, -1, event );
-        }
-        else if ( m_cursorMode == WXGRID_CURSOR_RESIZE_COL )
+        if ( oldRight > rightCol )
         {
         {
-            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
-            DoEndDragResizeCol();
+            // Refresh the newly selected or deselected
+            // area to the right of the old or new selection.
+            need_refresh[2] = true;
+            rect[2] = BlockToDeviceRect(
+                wxGridCellCoords( oldTop, rightCol + 1 ),
+                wxGridCellCoords( oldBottom, oldRight ) );
+        }
 
 
-            // Note: we are ending the event *after* doing
-            // default processing in this case
-            //
-            SendEvent( wxEVT_GRID_COL_SIZE, -1, m_dragRowOrCol, event );
+        if ( oldBottom > bottomRow )
+        {
+            // Refresh the newly selected or deselected
+            // area below the old or new selection.
+            need_refresh[3] = true;
+            rect[3] = BlockToDeviceRect(
+                wxGridCellCoords( bottomRow + 1, leftCol ),
+                wxGridCellCoords( oldBottom, rightCol ) );
         }
 
         }
 
-        m_dragLastPos = -1;
+        // various Refresh() calls
+        for (i = 0; i < 4; i++ )
+            if ( need_refresh[i] && rect[i] != wxGridNoCellRect )
+                m_gridWin->Refresh( false, &(rect[i]) );
     }
 
     }
 
+    // change selection
+    m_selectedBlockTopLeft = updateTopLeft;
+    m_selectedBlockBottomRight = updateBottomRight;
+}
 
 
-    // ------------ Right button down
-    //
-    else if ( event.RightDown() && coords != wxGridNoCellCoords )
+//
+// ------ functions to get/send data (see also public functions)
+//
+
+bool wxGrid::GetModelValues()
+{
+    // Hide the editor, so it won't hide a changed value.
+    HideCellEditControl();
+
+    if ( m_table )
     {
     {
-        DisableCellEditControl();
-        if ( !SendEvent( wxEVT_GRID_CELL_RIGHT_CLICK,
-                         coords.GetRow(),
-                         coords.GetCol(),
-                         event ) )
-        {
-            // no default action at the moment
-        }
+        // all we need to do is repaint the grid
+        //
+        m_gridWin->Refresh();
+        return true;
     }
 
     }
 
+    return false;
+}
 
 
-    // ------------ Right double click
-    //
-    else if ( event.RightDClick() && coords != wxGridNoCellCoords )
+bool wxGrid::SetModelValues()
+{
+    int row, col;
+
+    // Disable the editor, so it won't hide a changed value.
+    // Do we also want to save the current value of the editor first?
+    // I think so ...
+    DisableCellEditControl();
+
+    if ( m_table )
     {
     {
-        DisableCellEditControl();
-        if ( !SendEvent( wxEVT_GRID_CELL_RIGHT_DCLICK,
-                         coords.GetRow(),
-                         coords.GetCol(),
-                         event ) )
+        for ( row = 0; row < m_numRows; row++ )
         {
         {
-            // no default action at the moment
+            for ( col = 0; col < m_numCols; col++ )
+            {
+                m_table->SetValue( row, col, GetCellValue(row, col) );
+            }
         }
         }
+
+        return true;
     }
 
     }
 
-    // ------------ Moving and no button action
-    //
-    else if ( event.Moving() && !event.IsButton() )
-    {
-        int dragRow = YToEdgeOfRow( y );
-        int dragCol = XToEdgeOfCol( x );
+    return false;
+}
 
 
-        // Dragging on the corner of a cell to resize in both
-        // directions is not implemented yet...
-        //
-        if ( dragRow >= 0  &&  dragCol >= 0 )
-        {
-            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
-            return;
-        }
+// Note - this function only draws cells that are in the list of
+// exposed cells (usually set from the update region by
+// CalcExposedCells)
+//
+void wxGrid::DrawGridCellArea( wxDC& dc, const wxGridCellCoordsArray& cells )
+{
+    if ( !m_numRows || !m_numCols )
+        return;
 
 
-        if ( dragRow >= 0 )
-        {
-            m_dragRowOrCol = dragRow;
+    int i, numCells = cells.GetCount();
+    int row, col, cell_rows, cell_cols;
+    wxGridCellCoordsArray redrawCells;
 
 
-            if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
+    for ( i = numCells - 1; i >= 0; i-- )
+    {
+        row = cells[i].GetRow();
+        col = cells[i].GetCol();
+        GetCellSize( row, col, &cell_rows, &cell_cols );
+
+        // If this cell is part of a multicell block, find owner for repaint
+        if ( cell_rows <= 0 || cell_cols <= 0 )
+        {
+            wxGridCellCoords cell( row + cell_rows, col + cell_cols );
+            bool marked = false;
+            for ( int j = 0; j < numCells; j++ )
             {
             {
-                if ( CanDragRowSize() && CanDragGridSize() )
-                    ChangeCursorMode(WXGRID_CURSOR_RESIZE_ROW);
+                if ( cell == cells[j] )
+                {
+                    marked = true;
+                    break;
+                }
             }
 
             }
 
-            if ( dragCol >= 0 )
+            if (!marked)
             {
             {
-                m_dragRowOrCol = dragCol;
+                int count = redrawCells.GetCount();
+                for (int j = 0; j < count; j++)
+                {
+                    if ( cell == redrawCells[j] )
+                    {
+                        marked = true;
+                        break;
+                    }
+                }
+
+                if (!marked)
+                    redrawCells.Add( cell );
             }
 
             }
 
-            return;
+            // don't bother drawing this cell
+            continue;
         }
 
         }
 
-        if ( dragCol >= 0 )
+        // If this cell is empty, find cell to left that might want to overflow
+        if (m_table && m_table->IsEmptyCell(row, col))
         {
         {
-            m_dragRowOrCol = dragCol;
-
-            if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
+            for ( int l = 0; l < cell_rows; l++ )
             {
             {
-                if ( CanDragColSize() && CanDragGridSize() )
-                    ChangeCursorMode(WXGRID_CURSOR_RESIZE_COL);
-            }
+                // find a cell in this row to leave already marked for repaint
+                int left = col;
+                for (int k = 0; k < int(redrawCells.GetCount()); k++)
+                    if ((redrawCells[k].GetCol() < left) &&
+                        (redrawCells[k].GetRow() == row))
+                    {
+                        left = redrawCells[k].GetCol();
+                    }
 
 
-            return;
-        }
+                if (left == col)
+                    left = 0; // oh well
 
 
-        // Neither on a row or col edge
-        //
-        if ( m_cursorMode != WXGRID_CURSOR_SELECT_CELL )
-        {
-            ChangeCursorMode(WXGRID_CURSOR_SELECT_CELL);
+                for (int j = col - 1; j >= left; j--)
+                {
+                    if (!m_table->IsEmptyCell(row + l, j))
+                    {
+                        if (GetCellOverflow(row + l, j))
+                        {
+                            wxGridCellCoords cell(row + l, j);
+                            bool marked = false;
+
+                            for (int k = 0; k < numCells; k++)
+                            {
+                                if ( cell == cells[k] )
+                                {
+                                    marked = true;
+                                    break;
+                                }
+                            }
+
+                            if (!marked)
+                            {
+                                int count = redrawCells.GetCount();
+                                for (int k = 0; k < count; k++)
+                                {
+                                    if ( cell == redrawCells[k] )
+                                    {
+                                        marked = true;
+                                        break;
+                                    }
+                                }
+                                if (!marked)
+                                    redrawCells.Add( cell );
+                            }
+                        }
+                        break;
+                    }
+                }
+            }
         }
         }
+
+        DrawCell( dc, cells[i] );
     }
     }
-}
 
 
+    numCells = redrawCells.GetCount();
 
 
-void wxGrid::DoEndDragResizeRow()
-{
-    if ( m_dragLastPos >= 0 )
+    for ( i = numCells - 1; i >= 0; i-- )
     {
     {
-        // erase the last line and resize the row
-        //
-        int cw, ch, left, dummy;
-        m_gridWin->GetClientSize( &cw, &ch );
-        CalcUnscrolledPosition( 0, 0, &left, &dummy );
+        DrawCell( dc, redrawCells[i] );
+    }
+}
 
 
-        wxClientDC dc( m_gridWin );
-        PrepareDC( dc );
-        dc.SetLogicalFunction( wxINVERT );
-        dc.DrawLine( left, m_dragLastPos, left+cw, m_dragLastPos );
-        HideCellEditControl();
-        SaveEditControlValue();
+void wxGrid::DrawGridSpace( wxDC& dc )
+{
+  int cw, ch;
+  m_gridWin->GetClientSize( &cw, &ch );
 
 
-        int rowTop = GetRowTop(m_dragRowOrCol);
-        SetRowSize( m_dragRowOrCol,
-                    wxMax( m_dragLastPos - rowTop, WXGRID_MIN_ROW_HEIGHT ) );
+  int right, bottom;
+  CalcUnscrolledPosition( cw, ch, &right, &bottom );
 
 
-        if ( !GetBatchCount() )
-        {
-            // Only needed to get the correct rect.y:
-            wxRect rect ( CellToRect( m_dragRowOrCol, 0 ) );
-            rect.x = 0;
-            CalcScrolledPosition(0, rect.y, &dummy, &rect.y);
-            rect.width = m_rowLabelWidth;
-            rect.height = ch - rect.y;
-            m_rowLabelWin->Refresh( TRUE, &rect );
-            rect.width = cw;
-            m_gridWin->Refresh( FALSE, &rect );
-        }
+  int rightCol = m_numCols > 0 ? GetColRight(GetColAt( m_numCols - 1 )) : 0;
+  int bottomRow = m_numRows > 0 ? GetRowBottom(m_numRows - 1) : 0;
 
 
-        ShowCellEditControl();
-    }
-}
+  if ( right > rightCol || bottom > bottomRow )
+  {
+      int left, top;
+      CalcUnscrolledPosition( 0, 0, &left, &top );
+
+      dc.SetBrush(GetDefaultCellBackgroundColour());
+      dc.SetPen( *wxTRANSPARENT_PEN );
 
 
+      if ( right > rightCol )
+      {
+          dc.DrawRectangle( rightCol, top, right - rightCol, ch );
+      }
 
 
-void wxGrid::DoEndDragResizeCol()
+      if ( bottom > bottomRow )
+      {
+          dc.DrawRectangle( left, bottomRow, cw, bottom - bottomRow );
+      }
+  }
+}
+
+void wxGrid::DrawCell( wxDC& dc, const wxGridCellCoords& coords )
 {
 {
-    if ( m_dragLastPos >= 0 )
-    {
-        // erase the last line and resize the col
-        //
-        int cw, ch, dummy, top;
-        m_gridWin->GetClientSize( &cw, &ch );
-        CalcUnscrolledPosition( 0, 0, &dummy, &top );
+    int row = coords.GetRow();
+    int col = coords.GetCol();
 
 
-        wxClientDC dc( m_gridWin );
-        PrepareDC( dc );
-        dc.SetLogicalFunction( wxINVERT );
-        dc.DrawLine( m_dragLastPos, top, m_dragLastPos, top+ch );
-        HideCellEditControl();
-        SaveEditControlValue();
+    if ( GetColWidth(col) <= 0 || GetRowHeight(row) <= 0 )
+        return;
 
 
-        int colLeft = GetColLeft(m_dragRowOrCol);
-        SetColSize( m_dragRowOrCol,
-                    wxMax( m_dragLastPos - colLeft,
-                           GetColMinimalWidth(m_dragRowOrCol) ) );
+    // we draw the cell border ourselves
+    wxGridCellAttr* attr = GetCellAttr(row, col);
 
 
-        if ( !GetBatchCount() )
-        {
-            // Only needed to get the correct rect.x:
-            wxRect rect ( CellToRect( 0, m_dragRowOrCol ) );
-            rect.y = 0;
-            CalcScrolledPosition(rect.x, 0, &rect.x, &dummy);
-            rect.width = cw - rect.x;
-            rect.height = m_colLabelHeight;
-            m_colLabelWin->Refresh( TRUE, &rect );
-            rect.height = ch;
-            m_gridWin->Refresh( FALSE, &rect );
-        }
+    bool isCurrent = coords == m_currentCellCoords;
 
 
-        ShowCellEditControl();
-    }
-}
+    wxRect rect = CellToRect( row, col );
 
 
+    // if the editor is shown, we should use it and not the renderer
+    // Note: However, only if it is really _shown_, i.e. not hidden!
+    if ( isCurrent && IsCellEditControlShown() )
+    {
+        // NB: this "#if..." is temporary and fixes a problem where the
+        // edit control is erased by this code after being rendered.
+        // On wxMac (QD build only), the cell editor is a wxTextCntl and is rendered
+        // implicitly, causing this out-of order render.
+#if !defined(__WXMAC__)
+        wxGridCellEditor *editor = attr->GetEditor(this, row, col);
+        editor->PaintBackground(dc, rect, *attr);
+        editor->DecRef();
+#endif
+    }
+    else
+    {
+        // but all the rest is drawn by the cell renderer and hence may be customized
+        wxGridCellRenderer *renderer = attr->GetRenderer(this, row, col);
+        renderer->Draw(*this, *attr, dc, rect, row, col, IsInSelection(coords));
+        renderer->DecRef();
+    }
 
 
+    attr->DecRef();
+}
 
 
-//
-// ------ interaction with data model
-//
-bool wxGrid::ProcessTableMessage( wxGridTableMessage& msg )
+void wxGrid::DrawCellHighlight( wxDC& dc, const wxGridCellAttr *attr )
 {
 {
-    switch ( msg.GetId() )
-    {
-        case wxGRIDTABLE_REQUEST_VIEW_GET_VALUES:
-            return GetModelValues();
+    // don't show highlight when the grid doesn't have focus
+    if ( !HasFocus() )
+        return;
 
 
-        case wxGRIDTABLE_REQUEST_VIEW_SEND_VALUES:
-            return SetModelValues();
+    int row = m_currentCellCoords.GetRow();
+    int col = m_currentCellCoords.GetCol();
 
 
-        case wxGRIDTABLE_NOTIFY_ROWS_INSERTED:
-        case wxGRIDTABLE_NOTIFY_ROWS_APPENDED:
-        case wxGRIDTABLE_NOTIFY_ROWS_DELETED:
-        case wxGRIDTABLE_NOTIFY_COLS_INSERTED:
-        case wxGRIDTABLE_NOTIFY_COLS_APPENDED:
-        case wxGRIDTABLE_NOTIFY_COLS_DELETED:
-            return Redimension( msg );
+    if ( GetColWidth(col) <= 0 || GetRowHeight(row) <= 0 )
+        return;
 
 
-        default:
-            return FALSE;
-    }
-}
+    wxRect rect = CellToRect(row, col);
 
 
+    // hmmm... what could we do here to show that the cell is disabled?
+    // for now, I just draw a thinner border than for the other ones, but
+    // it doesn't look really good
 
 
+    int penWidth = attr->IsReadOnly() ? m_cellHighlightROPenWidth : m_cellHighlightPenWidth;
 
 
-// The behaviour of this function depends on the grid table class
-// Clear() function.  For the default wxGridStringTable class the
-// behavious is to replace all cell contents with wxEmptyString but
-// not to change the number of rows or cols.
-//
-void wxGrid::ClearGrid()
-{
-    if ( m_table )
+    if (penWidth > 0)
     {
     {
-        if (IsCellEditControlEnabled())
-            DisableCellEditControl();
+        // The center of the drawn line is where the position/width/height of
+        // the rectangle is actually at (on wxMSW at least), so the
+        // size of the rectangle is reduced to compensate for the thickness of
+        // the line. If this is too strange on non-wxMSW platforms then
+        // please #ifdef this appropriately.
+        rect.x += penWidth / 2;
+        rect.y += penWidth / 2;
+        rect.width -= penWidth - 1;
+        rect.height -= penWidth - 1;
 
 
-        m_table->Clear();
-        if ( !GetBatchCount() ) m_gridWin->Refresh();
+        // Now draw the rectangle
+        // use the cellHighlightColour if the cell is inside a selection, this
+        // will ensure the cell is always visible.
+        dc.SetPen(wxPen(IsInSelection(row,col) ? m_selectionForeground
+                                               : m_cellHighlightColour,
+                        penWidth));
+        dc.SetBrush(*wxTRANSPARENT_BRUSH);
+        dc.DrawRectangle(rect);
     }
 }
 
     }
 }
 
+wxPen wxGrid::GetDefaultGridLinePen()
+{
+    return wxPen(GetGridLineColour());
+}
+
+wxPen wxGrid::GetRowGridLinePen(int WXUNUSED(row))
+{
+    return GetDefaultGridLinePen();
+}
+
+wxPen wxGrid::GetColGridLinePen(int WXUNUSED(col))
+{
+    return GetDefaultGridLinePen();
+}
 
 
-bool wxGrid::InsertRows( int pos, int numRows, bool WXUNUSED(updateLabels) )
+void wxGrid::DrawCellBorder( wxDC& dc, const wxGridCellCoords& coords )
 {
 {
-    // TODO: something with updateLabels flag
+    int row = coords.GetRow();
+    int col = coords.GetCol();
+    if ( GetColWidth(col) <= 0 || GetRowHeight(row) <= 0 )
+        return;
+
 
 
-    if ( !m_created )
+    wxRect rect = CellToRect( row, col );
+
+    // right hand border
+    dc.SetPen( GetColGridLinePen(col) );
+    dc.DrawLine( rect.x + rect.width, rect.y,
+                 rect.x + rect.width, rect.y + rect.height + 1 );
+
+    // bottom border
+    dc.SetPen( GetRowGridLinePen(row) );
+    dc.DrawLine( rect.x, rect.y + rect.height,
+                 rect.x + rect.width, rect.y + rect.height);
+}
+
+void wxGrid::DrawHighlight(wxDC& dc, const wxGridCellCoordsArray& cells)
+{
+    // This if block was previously in wxGrid::OnPaint but that doesn't
+    // seem to get called under wxGTK - MB
+    //
+    if ( m_currentCellCoords == wxGridNoCellCoords &&
+         m_numRows && m_numCols )
     {
     {
-        wxFAIL_MSG( wxT("Called wxGrid::InsertRows() before calling CreateGrid()") );
-        return FALSE;
+        m_currentCellCoords.Set(0, 0);
     }
 
     }
 
-    if ( m_table )
+    if ( IsCellEditControlShown() )
     {
     {
-        if (IsCellEditControlEnabled())
-            DisableCellEditControl();
+        // don't show highlight when the edit control is shown
+        return;
+    }
 
 
-        bool ok = m_table->InsertRows( pos, numRows );
+    // if the active cell was repainted, repaint its highlight too because it
+    // might have been damaged by the grid lines
+    size_t count = cells.GetCount();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        wxGridCellCoords cell = cells[n];
 
 
-        // the table will have sent the results of the insert row
-        // operation to this view object as a grid table message
-        //
-        if ( ok )
+        // If we are using attributes, then we may have just exposed another
+        // cell in a partially-visible merged cluster of cells. If the "anchor"
+        // (upper left) cell of this merged cluster is the cell indicated by
+        // m_currentCellCoords, then we need to refresh the cell highlight even
+        // though the "anchor" itself is not part of our update segment.
+        if ( CanHaveAttributes() )
         {
         {
-            if ( m_numCols == 0 )
-            {
-                m_table->AppendCols( WXGRID_DEFAULT_NUMBER_COLS );
-                //
-                // TODO: perhaps instead of appending the default number of cols
-                // we should remember what the last non-zero number of cols was ?
-                //
-            }
+            int rows = 0,
+                cols = 0;
+            GetCellSize(cell.GetRow(), cell.GetCol(), &rows, &cols);
 
 
-            if ( m_currentCellCoords == wxGridNoCellCoords )
-            {
-                // if we have just inserted cols into an empty grid the current
-                // cell will be undefined...
-                //
-                SetCurrentCell( 0, 0 );
-            }
+            if ( rows < 0 )
+                cell.SetRow(cell.GetRow() + rows);
 
 
-            m_selection->UpdateRows( pos, numRows );
-            if ( !GetBatchCount() ) Refresh();
+            if ( cols < 0 )
+                cell.SetCol(cell.GetCol() + cols);
         }
 
         }
 
-        return ok;
+        if ( cell == m_currentCellCoords )
+        {
+            wxGridCellAttr* attr = GetCellAttr(m_currentCellCoords);
+            DrawCellHighlight(dc, attr);
+            attr->DecRef();
+
+            break;
+        }
     }
     }
-    else
+}
+
+// Used by wxGrid::Render() to draw the grid lines only for the cells in the
+// specified range.
+void
+wxGrid::DrawRangeGridLines(wxDC& dc,
+                           const wxRegion& reg,
+                           const wxGridCellCoords& topLeft,
+                           const wxGridCellCoords& bottomRight)
+{
+    if ( !m_gridLinesEnabled )
+         return;
+
+    int top, left, width, height;
+    reg.GetBox( left, top, width, height );
+
+    // create a clipping region
+    wxRegion clippedcells( dc.LogicalToDeviceX( left ),
+                           dc.LogicalToDeviceY( top ),
+                           dc.LogicalToDeviceXRel( width ),
+                           dc.LogicalToDeviceYRel( height ) );
+
+    // subtract multi cell span area from clipping region for lines
+    wxRect rect;
+    for ( int row = topLeft.GetRow(); row <= bottomRight.GetRow(); row++ )
     {
     {
-        return FALSE;
+        for ( int col = topLeft.GetCol(); col <= bottomRight.GetCol(); col++ )
+        {
+            int cell_rows, cell_cols;
+            GetCellSize( row, col, &cell_rows, &cell_cols );
+            if ( cell_rows > 1 || cell_cols > 1 ) // multi cell
+            {
+                rect = CellToRect( row, col );
+                // cater for scaling
+                // device origin already set in ::Render() for x, y
+                rect.x = dc.LogicalToDeviceX( rect.x );
+                rect.y = dc.LogicalToDeviceY( rect.y );
+                rect.width = dc.LogicalToDeviceXRel( rect.width );
+                rect.height = dc.LogicalToDeviceYRel( rect.height ) - 1;
+                clippedcells.Subtract( rect );
+            }
+            else if ( cell_rows < 0 || cell_cols < 0 ) // part of multicell
+            {
+                rect = CellToRect( row + cell_rows, col + cell_cols );
+                rect.x = dc.LogicalToDeviceX( rect.x );
+                rect.y = dc.LogicalToDeviceY( rect.y );
+                rect.width = dc.LogicalToDeviceXRel( rect.width );
+                rect.height = dc.LogicalToDeviceYRel( rect.height ) - 1;
+                clippedcells.Subtract( rect );
+            }
+        }
     }
     }
-}
 
 
+    dc.SetDeviceClippingRegion( clippedcells );
+
+    DoDrawGridLines(dc,
+                    top, left, top + height, left + width,
+                    topLeft.GetRow(), topLeft.GetCol(),
+                    bottomRight.GetRow(), bottomRight.GetCol());
+
+    dc.DestroyClippingRegion();
+}
 
 
-bool wxGrid::AppendRows( int numRows, bool WXUNUSED(updateLabels) )
+// This is used to redraw all grid lines e.g. when the grid line colour
+// has been changed
+//
+void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & WXUNUSED(reg) )
 {
 {
-    // TODO: something with updateLabels flag
+    if ( !m_gridLinesEnabled )
+         return;
+
+    int top, bottom, left, right;
+
+    int cw, ch;
+    m_gridWin->GetClientSize(&cw, &ch);
+    CalcUnscrolledPosition( 0, 0, &left, &top );
+    CalcUnscrolledPosition( cw, ch, &right, &bottom );
 
 
-    if ( !m_created )
+    // avoid drawing grid lines past the last row and col
+    if ( m_gridLinesClipHorz )
     {
     {
-        wxFAIL_MSG( wxT("Called wxGrid::AppendRows() before calling CreateGrid()") );
-        return FALSE;
+        if ( !m_numCols )
+            return;
+
+        const int lastColRight = GetColRight(GetColAt(m_numCols - 1));
+        if ( right > lastColRight )
+            right = lastColRight;
     }
 
     }
 
-    if ( m_table && m_table->AppendRows( numRows ) )
+    if ( m_gridLinesClipVert )
     {
     {
-        if ( m_currentCellCoords == wxGridNoCellCoords )
-        {
-            // if we have just inserted cols into an empty grid the current
-            // cell will be undefined...
-            //
-            SetCurrentCell( 0, 0 );
-        }
+        if ( !m_numRows )
+            return;
 
 
-        // the table will have sent the results of the append row
-        // operation to this view object as a grid table message
-        //
-        if ( !GetBatchCount() ) Refresh();
-        return TRUE;
+        const int lastRowBottom = GetRowBottom(m_numRows - 1);
+        if ( bottom > lastRowBottom )
+            bottom = lastRowBottom;
     }
     }
-    else
+
+    // no gridlines inside multicells, clip them out
+    int leftCol = GetColPos( internalXToCol(left) );
+    int topRow = internalYToRow(top);
+    int rightCol = GetColPos( internalXToCol(right) );
+    int bottomRow = internalYToRow(bottom);
+
+    wxRegion clippedcells(0, 0, cw, ch);
+
+    int cell_rows, cell_cols;
+    wxRect rect;
+
+    for ( int j = topRow; j <= bottomRow; j++ )
     {
     {
-        return FALSE;
+        for ( int colPos = leftCol; colPos <= rightCol; colPos++ )
+        {
+            int i = GetColAt( colPos );
+
+            GetCellSize( j, i, &cell_rows, &cell_cols );
+            if ((cell_rows > 1) || (cell_cols > 1))
+            {
+                rect = CellToRect(j,i);
+                CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
+                clippedcells.Subtract(rect);
+            }
+            else if ((cell_rows < 0) || (cell_cols < 0))
+            {
+                rect = CellToRect(j + cell_rows, i + cell_cols);
+                CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
+                clippedcells.Subtract(rect);
+            }
+        }
     }
     }
-}
 
 
+    dc.SetDeviceClippingRegion( clippedcells );
+
+    DoDrawGridLines(dc,
+                    top, left, bottom, right,
+                    topRow, leftCol, m_numRows, m_numCols);
 
 
-bool wxGrid::DeleteRows( int pos, int numRows, bool WXUNUSED(updateLabels) )
+    dc.DestroyClippingRegion();
+}
+
+void
+wxGrid::DoDrawGridLines(wxDC& dc,
+                        int top, int left,
+                        int bottom, int right,
+                        int topRow, int leftCol,
+                        int bottomRow, int rightCol)
 {
 {
-    // TODO: something with updateLabels flag
+    // horizontal grid lines
+    for ( int i = topRow; i < bottomRow; i++ )
+    {
+        int bot = GetRowBottom(i) - 1;
+
+        if ( bot > bottom )
+            break;
 
 
-    if ( !m_created )
-    {
-        wxFAIL_MSG( wxT("Called wxGrid::DeleteRows() before calling CreateGrid()") );
-        return FALSE;
+        if ( bot >= top )
+        {
+            dc.SetPen( GetRowGridLinePen(i) );
+            dc.DrawLine( left, bot, right, bot );
+        }
     }
 
     }
 
-    if ( m_table )
+    // vertical grid lines
+    for ( int colPos = leftCol; colPos < rightCol; colPos++ )
     {
     {
-        if (IsCellEditControlEnabled())
-            DisableCellEditControl();
+        int i = GetColAt( colPos );
 
 
-        if (m_table->DeleteRows( pos, numRows ))
-        {
+        int colRight = GetColRight(i);
+#ifdef __WXGTK__
+        if (GetLayoutDirection() != wxLayout_RightToLeft)
+#endif
+            colRight--;
 
 
-            // the table will have sent the results of the delete row
-            // operation to this view object as a grid table message
-            //
-            m_selection->UpdateRows( pos, -((int)numRows) );
-            if ( !GetBatchCount() ) Refresh();
-            return TRUE;
+        if ( colRight > right )
+            break;
+
+        if ( colRight >= left )
+        {
+            dc.SetPen( GetColGridLinePen(i) );
+            dc.DrawLine( colRight, top, colRight, bottom );
         }
     }
         }
     }
-    return FALSE;
 }
 
 }
 
-
-bool wxGrid::InsertCols( int pos, int numCols, bool WXUNUSED(updateLabels) )
+void wxGrid::DrawRowLabels( wxDC& dc, const wxArrayInt& rows)
 {
 {
-    // TODO: something with updateLabels flag
+    if ( !m_numRows )
+        return;
 
 
-    if ( !m_created )
+    const size_t numLabels = rows.GetCount();
+    for ( size_t i = 0; i < numLabels; i++ )
     {
     {
-        wxFAIL_MSG( wxT("Called wxGrid::InsertCols() before calling CreateGrid()") );
-        return FALSE;
+        DrawRowLabel( dc, rows[i] );
     }
     }
+}
 
 
-    if ( m_table )
-    {
-        if (IsCellEditControlEnabled())
-            DisableCellEditControl();
+void wxGrid::DrawRowLabel( wxDC& dc, int row )
+{
+    if ( GetRowHeight(row) <= 0 || m_rowLabelWidth <= 0 )
+        return;
 
 
-        bool ok = m_table->InsertCols( pos, numCols );
+    wxGridCellAttrProvider * const
+        attrProvider = m_table ? m_table->GetAttrProvider() : NULL;
 
 
-        // the table will have sent the results of the insert col
-        // operation to this view object as a grid table message
-        //
-        if ( ok )
-        {
-            if ( m_currentCellCoords == wxGridNoCellCoords )
-            {
-                // if we have just inserted cols into an empty grid the current
-                // cell will be undefined...
-                //
-                SetCurrentCell( 0, 0 );
-            }
+    // notice that an explicit static_cast is needed to avoid a compilation
+    // error with VC7.1 which, for some reason, tries to instantiate (abstract)
+    // wxGridRowHeaderRenderer class without it
+    const wxGridRowHeaderRenderer&
+        rend = attrProvider ? attrProvider->GetRowHeaderRenderer(row)
+                            : static_cast<const wxGridRowHeaderRenderer&>
+                                (gs_defaultHeaderRenderers.rowRenderer);
 
 
-            m_selection->UpdateCols( pos, numCols );
-            if ( !GetBatchCount() ) Refresh();
-        }
+    wxRect rect(0, GetRowTop(row), m_rowLabelWidth, GetRowHeight(row));
+    rend.DrawBorder(*this, dc, rect);
 
 
-        return ok;
-    }
-    else
-    {
-        return FALSE;
-    }
-}
+    int hAlign, vAlign;
+    GetRowLabelAlignment(&hAlign, &vAlign);
 
 
+    rend.DrawLabel(*this, dc, GetRowLabelValue(row),
+                   rect, hAlign, vAlign, wxHORIZONTAL);
+}
 
 
-bool wxGrid::AppendCols( int numCols, bool WXUNUSED(updateLabels) )
+void wxGrid::UseNativeColHeader(bool native)
 {
 {
-    // TODO: something with updateLabels flag
+    if ( native == m_useNativeHeader )
+        return;
 
 
-    if ( !m_created )
-    {
-        wxFAIL_MSG( wxT("Called wxGrid::AppendCols() before calling CreateGrid()") );
-        return FALSE;
-    }
+    delete m_colWindow;
+    m_useNativeHeader = native;
 
 
-    if ( m_table && m_table->AppendCols( numCols ) )
-    {
-        // the table will have sent the results of the append col
-        // operation to this view object as a grid table message
-        //
-        if ( m_currentCellCoords == wxGridNoCellCoords )
-        {
-            // if we have just inserted cols into an empty grid the current
-            // cell will be undefined...
-            //
-            SetCurrentCell( 0, 0 );
-        }
+    CreateColumnWindow();
 
 
-        if ( !GetBatchCount() ) Refresh();
-        return TRUE;
-    }
-    else
-    {
-        return FALSE;
-    }
+    if ( m_useNativeHeader )
+        GetGridColHeader()->SetColumnCount(m_numCols);
+    CalcWindowSizes();
 }
 
 }
 
-
-bool wxGrid::DeleteCols( int pos, int numCols, bool WXUNUSED(updateLabels) )
+void wxGrid::SetUseNativeColLabels( bool native )
 {
 {
-    // TODO: something with updateLabels flag
+    wxASSERT_MSG( !m_useNativeHeader,
+                  "doesn't make sense when using native header" );
 
 
-    if ( !m_created )
+    m_nativeColumnLabels = native;
+    if (native)
     {
     {
-        wxFAIL_MSG( wxT("Called wxGrid::DeleteCols() before calling CreateGrid()") );
-        return FALSE;
+        int height = wxRendererNative::Get().GetHeaderButtonHeight( this );
+        SetColLabelSize( height );
     }
 
     }
 
-    if ( m_table )
-    {
-        if (IsCellEditControlEnabled())
-            DisableCellEditControl();
-
-        if ( m_table->DeleteCols( pos, numCols ) )
-        {
-            // the table will have sent the results of the delete col
-            // operation to this view object as a grid table message
-            //
-            m_selection->UpdateCols( pos, -((int)numCols) );
-            if ( !GetBatchCount() ) Refresh();
-            return TRUE;
-        }
-    }
-    return FALSE;
+    GetColLabelWindow()->Refresh();
+    m_cornerLabelWin->Refresh();
 }
 
 }
 
-
-
-//
-// ----- event handlers
-//
-
-// Generate a grid event based on a mouse event and
-// return the result of ProcessEvent()
-//
-bool wxGrid::SendEvent( const wxEventType type,
-                        int row, int col,
-                        wxMouseEvent& mouseEv )
+void wxGrid::DrawColLabels( wxDC& dc,const wxArrayInt& cols )
 {
 {
-    if ( type == wxEVT_GRID_ROW_SIZE || type == wxEVT_GRID_COL_SIZE )
+    if ( !m_numCols )
+        return;
+
+    const size_t numLabels = cols.GetCount();
+    for ( size_t i = 0; i < numLabels; i++ )
     {
     {
-        int rowOrCol = (row == -1 ? col : row);
+        DrawColLabel( dc, cols[i] );
+    }
+}
 
 
-        wxGridSizeEvent gridEvt( GetId(),
-                                 type,
-                                 this,
-                                 rowOrCol,
-                                 mouseEv.GetX(), mouseEv.GetY(),
-                                 mouseEv.ControlDown(),
-                                 mouseEv.ShiftDown(),
-                                 mouseEv.AltDown(),
-                                 mouseEv.MetaDown() );
+void wxGrid::DrawCornerLabel(wxDC& dc)
+{
+    wxRect rect(wxSize(m_rowLabelWidth, m_colLabelHeight));
 
 
-        return GetEventHandler()->ProcessEvent(gridEvt);
-    }
-    else if ( type == wxEVT_GRID_RANGE_SELECT )
+    if ( m_nativeColumnLabels )
     {
     {
-        wxGridRangeSelectEvent gridEvt( GetId(),
-                                        type,
-                                        this,
-                                        m_selectingTopLeft,
-                                        m_selectingBottomRight,
-                                        mouseEv.ControlDown(),
-                                        mouseEv.ShiftDown(),
-                                        mouseEv.AltDown(),
-                                        mouseEv.MetaDown() );
+        rect.Deflate(1);
 
 
-        return GetEventHandler()->ProcessEvent(gridEvt);
+        wxRendererNative::Get().DrawHeaderButton(m_cornerLabelWin, dc, rect, 0);
     }
     else
     {
     }
     else
     {
-        wxGridEvent gridEvt( GetId(),
-                             type,
-                             this,
-                             row, col,
-                             mouseEv.GetX(), mouseEv.GetY(),
-                             mouseEv.ControlDown(),
-                             mouseEv.ShiftDown(),
-                             mouseEv.AltDown(),
-                             mouseEv.MetaDown() );
+        rect.width++;
+        rect.height++;
 
 
-        return GetEventHandler()->ProcessEvent(gridEvt);
+        wxGridCellAttrProvider * const
+            attrProvider = m_table ? m_table->GetAttrProvider() : NULL;
+        const wxGridCornerHeaderRenderer&
+            rend = attrProvider ? attrProvider->GetCornerRenderer()
+                                : static_cast<wxGridCornerHeaderRenderer&>
+                                    (gs_defaultHeaderRenderers.cornerRenderer);
+
+        rend.DrawBorder(*this, dc, rect);
     }
 }
 
     }
 }
 
-
-// Generate a grid event of specified type and return the result
-// of ProcessEvent().
-//
-bool wxGrid::SendEvent( const wxEventType type,
-                        int row, int col )
+void wxGrid::DrawColLabel(wxDC& dc, int col)
 {
 {
-    if ( type == wxEVT_GRID_ROW_SIZE || type == wxEVT_GRID_COL_SIZE )
-    {
-        int rowOrCol = (row == -1 ? col : row);
-
-        wxGridSizeEvent gridEvt( GetId(),
-                                 type,
-                                 this,
-                                 rowOrCol );
+    if ( GetColWidth(col) <= 0 || m_colLabelHeight <= 0 )
+        return;
 
 
-        return GetEventHandler()->ProcessEvent(gridEvt);
+    int colLeft = GetColLeft(col);
+
+    wxRect rect(colLeft, 0, GetColWidth(col), m_colLabelHeight);
+    wxGridCellAttrProvider * const
+        attrProvider = m_table ? m_table->GetAttrProvider() : NULL;
+    const wxGridColumnHeaderRenderer&
+        rend = attrProvider ? attrProvider->GetColumnHeaderRenderer(col)
+                            : static_cast<wxGridColumnHeaderRenderer&>
+                                (gs_defaultHeaderRenderers.colRenderer);
+
+    if ( m_nativeColumnLabels )
+    {
+        wxRendererNative::Get().DrawHeaderButton
+                                (
+                                    GetColLabelWindow(),
+                                    dc,
+                                    rect,
+                                    0,
+                                    IsSortingBy(col)
+                                        ? IsSortOrderAscending()
+                                            ? wxHDR_SORT_ICON_UP
+                                            : wxHDR_SORT_ICON_DOWN
+                                        : wxHDR_SORT_ICON_NONE
+                                );
+        rect.Deflate(2);
     }
     else
     {
     }
     else
     {
-        wxGridEvent gridEvt( GetId(),
-                             type,
-                             this,
-                             row, col );
+        // It is reported that we need to erase the background to avoid display
+        // artefacts, see #12055.
+        wxDCBrushChanger setBrush(dc, m_colWindow->GetBackgroundColour());
+        dc.DrawRectangle(rect);
 
 
-        return GetEventHandler()->ProcessEvent(gridEvt);
+        rend.DrawBorder(*this, dc, rect);
     }
     }
-}
 
 
+    int hAlign, vAlign;
+    GetColLabelAlignment(&hAlign, &vAlign);
+    const int orient = GetColLabelTextOrientation();
 
 
-void wxGrid::OnPaint( wxPaintEvent& WXUNUSED(event) )
+    rend.DrawLabel(*this, dc, GetColLabelValue(col), rect, hAlign, vAlign, orient);
+}
+
+// TODO: these 2 functions should be replaced with wxDC::DrawLabel() to which
+//       we just have to add textOrientation support
+void wxGrid::DrawTextRectangle( wxDC& dc,
+                                const wxString& value,
+                                const wxRect& rect,
+                                int horizAlign,
+                                int vertAlign,
+                                int textOrientation ) const
 {
 {
-    wxPaintDC dc( this );
+    wxArrayString lines;
 
 
-    if ( m_currentCellCoords == wxGridNoCellCoords  &&
-         m_numRows && m_numCols )
-    {
-        m_currentCellCoords.Set(0, 0);
-        ShowCellEditControl();
-    }
+    StringToLines( value, lines );
 
 
-    m_displayed = TRUE;
+    DrawTextRectangle(dc, lines, rect, horizAlign, vertAlign, textOrientation);
 }
 
 }
 
-
-// This is just here to make sure that CalcDimensions gets called when
-// the grid view is resized... then the size event is skipped to allow
-// the box sizers to handle everything
-//
-void wxGrid::OnSize( wxSizeEvent& event )
+void wxGrid::DrawTextRectangle(wxDC& dc,
+                               const wxArrayString& lines,
+                               const wxRect& rect,
+                               int horizAlign,
+                               int vertAlign,
+                               int textOrientation) const
 {
 {
-    CalcWindowSizes();
-    CalcDimensions();
-}
+    if ( lines.empty() )
+        return;
 
 
+    wxDCClipper clip(dc, rect);
 
 
-void wxGrid::OnKeyDown( wxKeyEvent& event )
-{
-    if ( m_inOnKeyDown )
+    long textWidth,
+         textHeight;
+
+    if ( textOrientation == wxHORIZONTAL )
+        GetTextBoxSize( dc, lines, &textWidth, &textHeight );
+    else
+        GetTextBoxSize( dc, lines, &textHeight, &textWidth );
+
+    int x = 0,
+        y = 0;
+    switch ( vertAlign )
     {
     {
-        // shouldn't be here - we are going round in circles...
-        //
-        wxFAIL_MSG( wxT("wxGrid::OnKeyDown called while already active") );
-    }
+        case wxALIGN_BOTTOM:
+            if ( textOrientation == wxHORIZONTAL )
+                y = rect.y + (rect.height - textHeight - 1);
+            else
+                x = rect.x + rect.width - textWidth;
+            break;
 
 
-    m_inOnKeyDown = TRUE;
+        case wxALIGN_CENTRE:
+            if ( textOrientation == wxHORIZONTAL )
+                y = rect.y + ((rect.height - textHeight) / 2);
+            else
+                x = rect.x + ((rect.width - textWidth) / 2);
+            break;
 
 
-    // propagate the event up and see if it gets processed
-    //
-    wxWindow *parent = GetParent();
-    wxKeyEvent keyEvt( event );
-    keyEvt.SetEventObject( parent );
+        case wxALIGN_TOP:
+        default:
+            if ( textOrientation == wxHORIZONTAL )
+                y = rect.y + 1;
+            else
+                x = rect.x + 1;
+            break;
+    }
 
 
-    if ( !parent->GetEventHandler()->ProcessEvent( keyEvt ) )
+    // Align each line of a multi-line label
+    size_t nLines = lines.GetCount();
+    for ( size_t l = 0; l < nLines; l++ )
     {
     {
+        const wxString& line = lines[l];
 
 
-        // TODO:  Should also support Shift-cursor keys for
-        //        extending the selection.  Maybe add a flag to
-        //        MoveCursorXXX() and MoveCursorXXXBlock() and
-        //        just send event.ShiftDown().
-
-        // try local handlers
-        //
-        switch ( event.KeyCode() )
+        if ( line.empty() )
         {
         {
-            case WXK_UP:
-                if ( event.ControlDown() )
-                {
-                    MoveCursorUpBlock();
-                }
-                else
-                {
-                    MoveCursorUp();
-                }
-                break;
+            *(textOrientation == wxHORIZONTAL ? &y : &x) += dc.GetCharHeight();
+            continue;
+        }
 
 
-            case WXK_DOWN:
-                if ( event.ControlDown() )
-                {
-                    MoveCursorDownBlock();
-                }
-                else
-                {
-                    MoveCursorDown();
-                }
-                break;
+        wxCoord lineWidth = 0,
+             lineHeight = 0;
+        dc.GetTextExtent(line, &lineWidth, &lineHeight);
 
 
-            case WXK_LEFT:
-                if ( event.ControlDown() )
-                {
-                    MoveCursorLeftBlock();
-                }
+        switch ( horizAlign )
+        {
+            case wxALIGN_RIGHT:
+                if ( textOrientation == wxHORIZONTAL )
+                    x = rect.x + (rect.width - lineWidth - 1);
                 else
                 else
-                {
-                    MoveCursorLeft();
-                }
+                    y = rect.y + lineWidth + 1;
                 break;
 
                 break;
 
-            case WXK_RIGHT:
-                if ( event.ControlDown() )
-                {
-                    MoveCursorRightBlock();
-                }
+            case wxALIGN_CENTRE:
+                if ( textOrientation == wxHORIZONTAL )
+                    x = rect.x + ((rect.width - lineWidth) / 2);
                 else
                 else
-                {
-                    MoveCursorRight();
-                }
+                    y = rect.y + rect.height - ((rect.height - lineWidth) / 2);
                 break;
 
                 break;
 
-            case WXK_RETURN:
-                if ( event.ControlDown() )
-                {
-                    event.Skip();  // to let the edit control have the return
-                }
+            case wxALIGN_LEFT:
+            default:
+                if ( textOrientation == wxHORIZONTAL )
+                    x = rect.x + 1;
                 else
                 else
-                {
-                    MoveCursorDown();
-                }
+                    y = rect.y + rect.height - 1;
                 break;
                 break;
+        }
 
 
-            case WXK_TAB:
-                if (event.ShiftDown())
-                    MoveCursorLeft();
-                else
-                    MoveCursorRight();
-                break;
+        if ( textOrientation == wxHORIZONTAL )
+        {
+            dc.DrawText( line, x, y );
+            y += lineHeight;
+        }
+        else
+        {
+            dc.DrawRotatedText( line, x, y, 90.0 );
+            x += lineHeight;
+        }
+    }
+}
 
 
-            case WXK_HOME:
-                if ( event.ControlDown() )
-                {
-                    MakeCellVisible( 0, 0 );
-                    SetCurrentCell( 0, 0 );
-                }
-                else
-                {
-                    event.Skip();
-                }
-                break;
+// Split multi-line text up into an array of strings.
+// Any existing contents of the string array are preserved.
+//
+// TODO: refactor wxTextFile::Read() and reuse the same code from here
+void wxGrid::StringToLines( const wxString& value, wxArrayString& lines ) const
+{
+    int startPos = 0;
+    int pos;
+    wxString eol = wxTextFile::GetEOL( wxTextFileType_Unix );
+    wxString tVal = wxTextFile::Translate( value, wxTextFileType_Unix );
 
 
-            case WXK_END:
-                if ( event.ControlDown() )
-                {
-                    MakeCellVisible( m_numRows-1, m_numCols-1 );
-                    SetCurrentCell( m_numRows-1, m_numCols-1 );
-                }
-                else
-                {
-                    event.Skip();
-                }
-                break;
+    while ( startPos < (int)tVal.length() )
+    {
+        pos = tVal.Mid(startPos).Find( eol );
+        if ( pos < 0 )
+        {
+            break;
+        }
+        else if ( pos == 0 )
+        {
+            lines.Add( wxEmptyString );
+        }
+        else
+        {
+            lines.Add( tVal.Mid(startPos, pos) );
+        }
 
 
-            case WXK_PRIOR:
-                MovePageUp();
-                break;
+        startPos += pos + 1;
+    }
 
 
-            case WXK_NEXT:
-                MovePageDown();
-                break;
+    if ( startPos < (int)tVal.length() )
+    {
+        lines.Add( tVal.Mid( startPos ) );
+    }
+}
 
 
-            case WXK_SPACE:
-                if ( !IsEditable() )
-                {
-                    MoveCursorRight();
-                    break;
-                }
-                // Otherwise fall through to default
+void wxGrid::GetTextBoxSize( const wxDC& dc,
+                             const wxArrayString& lines,
+                             long *width, long *height ) const
+{
+    wxCoord w = 0;
+    wxCoord h = 0;
+    wxCoord lineW = 0, lineH = 0;
 
 
-            default:
-                // alphanumeric keys or F2 (special key just for this) enable
-                // the cell edit control
-                if ( !(event.AltDown() ||
-                       event.MetaDown() ||
-                       event.ControlDown()) &&
-                     (isalnum(event.KeyCode()) || event.KeyCode() == WXK_F2) &&
-                     !IsCellEditControlEnabled() &&
-                     CanEnableCellControl() )
-                {
-                    EnableCellEditControl();
-                    int row = m_currentCellCoords.GetRow();
-                    int col = m_currentCellCoords.GetCol();
-                    wxGridCellAttr* attr = GetCellAttr(row, col);
-                    wxGridCellEditor *editor = attr->GetEditor(this, row, col);
-                    editor->StartingKey(event);
-                    editor->DecRef();
-                    attr->DecRef();
-                }
-                else
-                {
-                    // let others process char events with modifiers or all
-                    // char events for readonly cells
-                    event.Skip();
-                }
-                break;
+    size_t i;
+    for ( i = 0; i < lines.GetCount(); i++ )
+    {
+        dc.GetTextExtent( lines[i], &lineW, &lineH );
+        w = wxMax( w, lineW );
+        h += lineH;
+    }
+
+    *width = w;
+    *height = h;
+}
+
+//
+// ------ Batch processing.
+//
+void wxGrid::EndBatch()
+{
+    if ( m_batchCount > 0 )
+    {
+        m_batchCount--;
+        if ( !m_batchCount )
+        {
+            CalcDimensions();
+            m_rowLabelWin->Refresh();
+            m_colWindow->Refresh();
+            m_cornerLabelWin->Refresh();
+            m_gridWin->Refresh();
         }
     }
         }
     }
-
-    m_inOnKeyDown = FALSE;
 }
 
 }
 
-
-void wxGrid::OnEraseBackground(wxEraseEvent&)
+// Use this, rather than wxWindow::Refresh(), to force an immediate
+// repainting of the grid. Has no effect if you are already inside a
+// BeginBatch / EndBatch block.
+//
+void wxGrid::ForceRefresh()
 {
 {
+    BeginBatch();
+    EndBatch();
 }
 
 }
 
-void wxGrid::SetCurrentCell( const wxGridCellCoords& coords )
+bool wxGrid::Enable(bool enable)
 {
 {
-    if ( SendEvent( wxEVT_GRID_SELECT_CELL, coords.GetRow(), coords.GetCol() ) )
-    {
-        // the event has been intercepted - do nothing
-        return;
-    }
+    if ( !wxScrolledWindow::Enable(enable) )
+        return false;
 
 
-    if ( m_displayed  &&
-         m_currentCellCoords != wxGridNoCellCoords )
-    {
-        HideCellEditControl();
-        DisableCellEditControl();
+    // redraw in the new state
+    m_gridWin->Refresh();
 
 
-        // Clear the old current cell highlight
-        wxRect r = BlockToDeviceRect(m_currentCellCoords, m_currentCellCoords);
+    return true;
+}
 
 
-        // Otherwise refresh redraws the highlight!
-        m_currentCellCoords = coords;
+//
+// ------ Edit control functions
+//
 
 
-        m_gridWin->Refresh( FALSE, &r );
+void wxGrid::EnableEditing( bool edit )
+{
+    if ( edit != m_editable )
+    {
+        if (!edit)
+            EnableCellEditControl(edit);
+        m_editable = edit;
     }
     }
+}
 
 
-    m_currentCellCoords = coords;
+void wxGrid::EnableCellEditControl( bool enable )
+{
+    if (! m_editable)
+        return;
 
 
-    if ( m_displayed )
+    if ( enable != m_cellEditCtrlEnabled )
     {
     {
-        wxClientDC dc(m_gridWin);
-        PrepareDC(dc);
+        if ( enable )
+        {
+            if ( SendEvent(wxEVT_GRID_EDITOR_SHOWN) == -1 )
+                return;
 
 
-        wxGridCellAttr* attr = GetCellAttr(coords);
-        DrawCellHighlight(dc, attr);
-        attr->DecRef();
-#if 0
-        // SN: For my extended selection code, automatic
-        //     deselection is definitely not a good idea.
-        if ( IsSelection() )
+            // this should be checked by the caller!
+            wxASSERT_MSG( CanEnableCellControl(), wxT("can't enable editing for this cell!") );
+
+            // do it before ShowCellEditControl()
+            m_cellEditCtrlEnabled = enable;
+
+            ShowCellEditControl();
+        }
+        else
         {
         {
-            wxRect r( SelectionToDeviceRect() );
-            ClearSelection();
-            if ( !GetBatchCount() ) m_gridWin->Refresh( FALSE, &r );
+            SendEvent(wxEVT_GRID_EDITOR_HIDDEN);
+
+            HideCellEditControl();
+            SaveEditControlValue();
+
+            // do it after HideCellEditControl()
+            m_cellEditCtrlEnabled = enable;
         }
         }
-#endif
     }
 }
 
     }
 }
 
+bool wxGrid::IsCurrentCellReadOnly() const
+{
+    wxGridCellAttr*
+        attr = const_cast<wxGrid *>(this)->GetCellAttr(m_currentCellCoords);
+    bool readonly = attr->IsReadOnly();
+    attr->DecRef();
 
 
-//
-// ------ functions to get/send data (see also public functions)
-//
+    return readonly;
+}
 
 
-bool wxGrid::GetModelValues()
+bool wxGrid::CanEnableCellControl() const
 {
 {
-    if ( m_table )
-    {
-        // all we need to do is repaint the grid
-        //
-        m_gridWin->Refresh();
-        return TRUE;
-    }
-
-    return FALSE;
+    return m_editable && (m_currentCellCoords != wxGridNoCellCoords) &&
+        !IsCurrentCellReadOnly();
 }
 
 }
 
+bool wxGrid::IsCellEditControlEnabled() const
+{
+    // the cell edit control might be disable for all cells or just for the
+    // current one if it's read only
+    return m_cellEditCtrlEnabled ? !IsCurrentCellReadOnly() : false;
+}
 
 
-bool wxGrid::SetModelValues()
+bool wxGrid::IsCellEditControlShown() const
 {
 {
-    int row, col;
+    bool isShown = false;
 
 
-    if ( m_table )
+    if ( m_cellEditCtrlEnabled )
     {
     {
-        for ( row = 0;  row < m_numRows;  row++ )
+        int row = m_currentCellCoords.GetRow();
+        int col = m_currentCellCoords.GetCol();
+        wxGridCellAttr* attr = GetCellAttr(row, col);
+        wxGridCellEditor* editor = attr->GetEditor((wxGrid*) this, row, col);
+        attr->DecRef();
+
+        if ( editor )
         {
         {
-            for ( col = 0;  col < m_numCols;  col++ )
+            if ( editor->IsCreated() )
             {
             {
-                m_table->SetValue( row, col, GetCellValue(row, col) );
+                isShown = editor->GetControl()->IsShown();
             }
             }
-        }
 
 
-        return TRUE;
+            editor->DecRef();
+        }
     }
 
     }
 
-    return FALSE;
+    return isShown;
 }
 
 }
 
+void wxGrid::ShowCellEditControl()
+{
+    if ( IsCellEditControlEnabled() )
+    {
+        if ( !IsVisible( m_currentCellCoords, false ) )
+        {
+            m_cellEditCtrlEnabled = false;
+            return;
+        }
+        else
+        {
+            wxRect rect = CellToRect( m_currentCellCoords );
+            int row = m_currentCellCoords.GetRow();
+            int col = m_currentCellCoords.GetCol();
+
+            // if this is part of a multicell, find owner (topleft)
+            int cell_rows, cell_cols;
+            GetCellSize( row, col, &cell_rows, &cell_cols );
+            if ( cell_rows <= 0 || cell_cols <= 0 )
+            {
+                row += cell_rows;
+                col += cell_cols;
+                m_currentCellCoords.SetRow( row );
+                m_currentCellCoords.SetCol( col );
+            }
+
+            // erase the highlight and the cell contents because the editor
+            // might not cover the entire cell
+            wxClientDC dc( m_gridWin );
+            PrepareDC( dc );
+            wxGridCellAttr* attr = GetCellAttr(row, col);
+            dc.SetBrush(wxBrush(attr->GetBackgroundColour()));
+            dc.SetPen(*wxTRANSPARENT_PEN);
+            dc.DrawRectangle(rect);
 
 
+            // convert to scrolled coords
+            CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
 
 
-// Note - this function only draws cells that are in the list of
-// exposed cells (usually set from the update region by
-// CalcExposedCells)
-//
-void wxGrid::DrawGridCellArea( wxDC& dc )
-{
-    if ( !m_numRows || !m_numCols ) return;
+            int nXMove = 0;
+            if (rect.x < 0)
+                nXMove = rect.x;
 
 
-    size_t i;
-    size_t numCells = m_cellsExposed.GetCount();
+            // cell is shifted by one pixel
+            // However, don't allow x or y to become negative
+            // since the SetSize() method interprets that as
+            // "don't change."
+            if (rect.x > 0)
+                rect.x--;
+            if (rect.y > 0)
+                rect.y--;
 
 
-    for ( i = 0;  i < numCells;  i++ )
-    {
-        DrawCell( dc, m_cellsExposed[i] );
+            wxGridCellEditor* editor = attr->GetEditor(this, row, col);
+            if ( !editor->IsCreated() )
+            {
+                editor->Create(m_gridWin, wxID_ANY,
+                               new wxGridCellEditorEvtHandler(this, editor));
+
+                wxGridEditorCreatedEvent evt(GetId(),
+                                             wxEVT_GRID_EDITOR_CREATED,
+                                             this,
+                                             row,
+                                             col,
+                                             editor->GetControl());
+                GetEventHandler()->ProcessEvent(evt);
+            }
+
+            // resize editor to overflow into righthand cells if allowed
+            int maxWidth = rect.width;
+            wxString value = GetCellValue(row, col);
+            if ( (value != wxEmptyString) && (attr->GetOverflow()) )
+            {
+                int y;
+                GetTextExtent(value, &maxWidth, &y, NULL, NULL, &attr->GetFont());
+                if (maxWidth < rect.width)
+                    maxWidth = rect.width;
+            }
+
+            int client_right = m_gridWin->GetClientSize().GetWidth();
+            if (rect.x + maxWidth > client_right)
+                maxWidth = client_right - rect.x;
+
+            if ((maxWidth > rect.width) && (col < m_numCols) && m_table)
+            {
+                GetCellSize( row, col, &cell_rows, &cell_cols );
+                // may have changed earlier
+                for (int i = col + cell_cols; i < m_numCols; i++)
+                {
+                    int c_rows, c_cols;
+                    GetCellSize( row, i, &c_rows, &c_cols );
+
+                    // looks weird going over a multicell
+                    if (m_table->IsEmptyCell( row, i ) &&
+                            (rect.width < maxWidth) && (c_rows == 1))
+                    {
+                        rect.width += GetColWidth( i );
+                    }
+                    else
+                        break;
+                }
+
+                if (rect.GetRight() > client_right)
+                    rect.SetRight( client_right - 1 );
+            }
+
+            editor->SetCellAttr( attr );
+            editor->SetSize( rect );
+            if (nXMove != 0)
+                editor->GetControl()->Move(
+                    editor->GetControl()->GetPosition().x + nXMove,
+                    editor->GetControl()->GetPosition().y );
+            editor->Show( true, attr );
+
+            // recalc dimensions in case we need to
+            // expand the scrolled window to account for editor
+            CalcDimensions();
+
+            editor->BeginEdit(row, col, this);
+            editor->SetCellAttr(NULL);
+
+            editor->DecRef();
+            attr->DecRef();
+        }
     }
 }
 
     }
 }
 
+void wxGrid::HideCellEditControl()
+{
+    if ( IsCellEditControlEnabled() )
+    {
+        int row = m_currentCellCoords.GetRow();
+        int col = m_currentCellCoords.GetCol();
+
+        wxGridCellAttr *attr = GetCellAttr(row, col);
+        wxGridCellEditor *editor = attr->GetEditor(this, row, col);
+        const bool editorHadFocus = editor->GetControl()->HasFocus();
+        editor->Show( false );
+        editor->DecRef();
+        attr->DecRef();
 
 
-void wxGrid::DrawGridSpace( wxDC& dc )
+        // return the focus to the grid itself if the editor had it
+        //
+        // note that we must not do this unconditionally to avoid stealing
+        // focus from the window which just received it if we are hiding the
+        // editor precisely because we lost focus
+        if ( editorHadFocus )
+            m_gridWin->SetFocus();
+
+        // refresh whole row to the right
+        wxRect rect( CellToRect(row, col) );
+        CalcScrolledPosition(rect.x, rect.y, &rect.x, &rect.y );
+        rect.width = m_gridWin->GetClientSize().GetWidth() - rect.x;
+
+#ifdef __WXMAC__
+        // ensure that the pixels under the focus ring get refreshed as well
+        rect.Inflate(10, 10);
+#endif
+
+        m_gridWin->Refresh( false, &rect );
+    }
+}
+
+void wxGrid::SaveEditControlValue()
 {
 {
-    if ( m_numRows  &&  m_numCols )
+    if ( IsCellEditControlEnabled() )
     {
     {
-        int cw, ch;
-        m_gridWin->GetClientSize( &cw, &ch );
+        int row = m_currentCellCoords.GetRow();
+        int col = m_currentCellCoords.GetCol();
 
 
-        int right, bottom;
-        CalcUnscrolledPosition( cw, ch, &right, &bottom );
+        wxString oldval = GetCellValue(row, col);
 
 
-        if ( right > GetColRight(m_numCols-1)  ||
-             bottom > GetRowBottom(m_numRows-1) )
-        {
-            int left, top;
-            CalcUnscrolledPosition( 0, 0, &left, &top );
+        wxGridCellAttr* attr = GetCellAttr(row, col);
+        wxGridCellEditor* editor = attr->GetEditor(this, row, col);
 
 
-            dc.SetBrush( wxBrush(GetDefaultCellBackgroundColour(), wxSOLID) );
-            dc.SetPen( *wxTRANSPARENT_PEN );
+        wxString newval;
+        bool changed = editor->EndEdit(row, col, this, oldval, &newval);
 
 
-            if ( right > GetColRight(m_numCols-1) )
-                dc.DrawRectangle( GetColRight(m_numCols-1), top,
-                                  right - GetColRight(m_numCols-1), ch );
+        if ( changed && SendEvent(wxEVT_GRID_CELL_CHANGING, newval) != -1 )
+        {
+            editor->ApplyEdit(row, col, this);
 
 
-            if ( bottom > GetRowBottom(m_numRows-1) )
-                dc.DrawRectangle( left, GetRowBottom(m_numRows-1),
-                                  cw, bottom - GetRowBottom(m_numRows-1) );
+            // for compatibility reasons dating back to wx 2.8 when this event
+            // was called wxEVT_GRID_CELL_CHANGE and wxEVT_GRID_CELL_CHANGING
+            // didn't exist we allow vetoing this one too
+            if ( SendEvent(wxEVT_GRID_CELL_CHANGED, oldval) == -1 )
+            {
+                // Event has been vetoed, set the data back.
+                SetCellValue(row, col, oldval);
+            }
         }
         }
+
+        editor->DecRef();
+        attr->DecRef();
     }
 }
 
     }
 }
 
+void wxGrid::OnHideEditor(wxCommandEvent& WXUNUSED(event))
+{
+    DisableCellEditControl();
+}
 
 
-void wxGrid::DrawCell( wxDC& dc, const wxGridCellCoords& coords )
+//
+// ------ Grid location functions
+//  Note that all of these functions work with the logical coordinates of
+//  grid cells and labels so you will need to convert from device
+//  coordinates for mouse events etc.
+//
+
+wxGridCellCoords wxGrid::XYToCell(int x, int y) const
 {
 {
-    int row = coords.GetRow();
-    int col = coords.GetCol();
+    int row = YToRow(y);
+    int col = XToCol(x);
 
 
-    if ( GetColWidth(col) <= 0 || GetRowHeight(row) <= 0 )
-        return;
+    return row == -1 || col == -1 ? wxGridNoCellCoords
+                                  : wxGridCellCoords(row, col);
+}
 
 
-    // we draw the cell border ourselves
-#if !WXGRID_DRAW_LINES
-    if ( m_gridLinesEnabled )
-        DrawCellBorder( dc, coords );
-#endif
+// compute row or column from some (unscrolled) coordinate value, using either
+// m_defaultRowHeight/m_defaultColWidth or binary search on array of
+// m_rowBottoms/m_colRights to do it quickly in O(log n) time.
+// NOTE: This may not work correctly for reordered columns.
+int wxGrid::PosToLinePos(int coord,
+                         bool clipToMinMax,
+                         const wxGridOperations& oper) const
+{
+    const int numLines = oper.GetNumberOfLines(this);
 
 
-    wxGridCellAttr* attr = GetCellAttr(row, col);
+    if ( coord < 0 )
+        return clipToMinMax && numLines > 0 ? 0 : wxNOT_FOUND;
 
 
-    bool isCurrent = coords == m_currentCellCoords;
+    const int defaultLineSize = oper.GetDefaultLineSize(this);
+    wxCHECK_MSG( defaultLineSize, -1, "can't have 0 default line size" );
 
 
-    wxRect rect;
-    rect.x = GetColLeft(col);
-    rect.y = GetRowTop(row);
-    rect.width = GetColWidth(col) - 1;
-    rect.height = GetRowHeight(row) - 1;
+    int maxPos = coord / defaultLineSize,
+        minPos = 0;
 
 
-    // if the editor is shown, we should use it and not the renderer
-    if ( isCurrent && IsCellEditControlEnabled() )
-    {
-        wxGridCellEditor *editor = attr->GetEditor(this, row, col);
-        editor->PaintBackground(rect, attr);
-        editor->DecRef();
-    }
-    else
+    // check for the simplest case: if we have no explicit line sizes
+    // configured, then we already know the line this position falls in
+    const wxArrayInt& lineEnds = oper.GetLineEnds(this);
+    if ( lineEnds.empty() )
     {
     {
-        // but all the rest is drawn by the cell renderer and hence may be
-        // customized
-        wxGridCellRenderer *renderer = attr->GetRenderer(this, row, col);
-        renderer->Draw(*this, *attr, dc, rect, row, col, IsInSelection(coords));
-        renderer->DecRef();
+        if ( maxPos < numLines )
+            return maxPos;
+
+        return clipToMinMax ? numLines - 1 : -1;
     }
 
     }
 
-    attr->DecRef();
-}
 
 
-void wxGrid::DrawCellHighlight( wxDC& dc, const wxGridCellAttr *attr )
-{
-    int row = m_currentCellCoords.GetRow();
-    int col = m_currentCellCoords.GetCol();
+    // binary search is quite efficient and we can't really make any assumptions
+    // on where to start here since row and columns could be of size 0 if they are
+    // hidden. While this could be made more efficient, some profiling will be
+    // necessary to determine if it really is a performance bottleneck
+    maxPos = numLines  - 1;
 
 
-    if ( GetColWidth(col) <= 0 || GetRowHeight(row) <= 0 )
-        return;
+    // check if the position is beyond the last column
+    const int lineAtMaxPos = oper.GetLineAt(this, maxPos);
+    if ( coord >= lineEnds[lineAtMaxPos] )
+        return clipToMinMax ? maxPos : -1;
 
 
-    wxRect rect;
-    rect.x = GetColLeft(col);
-    rect.y = GetRowTop(row);
-    rect.width = GetColWidth(col) - 1;
-    rect.height = GetRowHeight(row) - 1;
+    // or before the first one
+    const int lineAt0 = oper.GetLineAt(this, 0);
+    if ( coord < lineEnds[lineAt0] )
+        return 0;
 
 
-    // hmmm... what could we do here to show that the cell is disabled?
-    // for now, I just draw a thinner border than for the other ones, but
-    // it doesn't look really good
-    dc.SetPen(wxPen(m_gridLineColour, attr->IsReadOnly() ? 1 : 3, wxSOLID));
-    dc.SetBrush(*wxTRANSPARENT_BRUSH);
 
 
-    dc.DrawRectangle(rect);
+    // finally do perform the binary search
+    while ( minPos < maxPos )
+    {
+        wxCHECK_MSG( lineEnds[oper.GetLineAt(this, minPos)] <= coord &&
+                        coord < lineEnds[oper.GetLineAt(this, maxPos)],
+                     -1,
+                     "wxGrid: internal error in PosToLinePos()" );
 
 
-#if 0
-        // VZ: my experiments with 3d borders...
+        if ( coord >= lineEnds[oper.GetLineAt(this, maxPos - 1)] )
+            return maxPos;
+        else
+            maxPos--;
+
+        const int median = minPos + (maxPos - minPos + 1) / 2;
+        if ( coord < lineEnds[oper.GetLineAt(this, median)] )
+            maxPos = median;
+        else
+            minPos = median;
+    }
 
 
-        // how to properly set colours for arbitrary bg?
-        wxCoord x1 = rect.x,
-                y1 = rect.y,
-                x2 = rect.x + rect.width -1,
-                y2 = rect.y + rect.height -1;
+    return maxPos;
+}
 
 
-        dc.SetPen(*wxWHITE_PEN);
-        dc.DrawLine(x1, y1, x2, y1);
-        dc.DrawLine(x1, y1, x1, y2);
+int
+wxGrid::PosToLine(int coord,
+                  bool clipToMinMax,
+                  const wxGridOperations& oper) const
+{
+    int pos = PosToLinePos(coord, clipToMinMax, oper);
 
 
-        dc.DrawLine(x1 + 1, y2 - 1, x2 - 1, y2 - 1);
-        dc.DrawLine(x2 - 1, y1 + 1, x2 - 1, y2 );
+    return pos == wxNOT_FOUND ? wxNOT_FOUND : oper.GetLineAt(this, pos);
+}
 
 
-        dc.SetPen(*wxBLACK_PEN);
-        dc.DrawLine(x1, y2, x2, y2);
-        dc.DrawLine(x2, y1, x2, y2+1);
-#endif // 0
+int wxGrid::YToRow(int y, bool clipToMinMax) const
+{
+    return PosToLine(y, clipToMinMax, wxGridRowOperations());
 }
 
 }
 
+int wxGrid::XToCol(int x, bool clipToMinMax) const
+{
+    return PosToLine(x, clipToMinMax, wxGridColumnOperations());
+}
 
 
-void wxGrid::DrawCellBorder( wxDC& dc, const wxGridCellCoords& coords )
+int wxGrid::XToPos(int x) const
 {
 {
-    int row = coords.GetRow();
-    int col = coords.GetCol();
-    if ( GetColWidth(col) <= 0 || GetRowHeight(row) <= 0 )
-        return;
+    return PosToLinePos(x, true /* clip */, wxGridColumnOperations());
+}
+
+// return the row/col number such that the pos is near the edge of, or -1 if
+// not near an edge.
+//
+// notice that position can only possibly be near an edge if the row/column is
+// large enough to still allow for an "inner" area that is _not_ near the edge
+// (i.e., if the height/width is smaller than WXGRID_LABEL_EDGE_ZONE, pos will
+// _never_ be considered to be near the edge).
+int wxGrid::PosToEdgeOfLine(int pos, const wxGridOperations& oper) const
+{
+    // Get the bottom or rightmost line that could match.
+    int line = oper.PosToLine(this, pos, true);
+
+    if ( oper.GetLineSize(this, line) > WXGRID_LABEL_EDGE_ZONE )
+    {
+        // We know that we are in this line, test whether we are close enough
+        // to start or end border, respectively.
+        if ( abs(oper.GetLineEndPos(this, line) - pos) < WXGRID_LABEL_EDGE_ZONE )
+            return line;
+        else if ( line > 0 &&
+                    pos - oper.GetLineStartPos(this,
+                                               line) < WXGRID_LABEL_EDGE_ZONE )
+        {
+            // We need to find the previous visible line, so skip all the
+            // hidden (of size 0) ones.
+            do
+            {
+                line = oper.GetLineBefore(this, line);
+            }
+            while ( line >= 0 && oper.GetLineSize(this, line) == 0 );
 
 
-    dc.SetPen( wxPen(GetGridLineColour(), 1, wxSOLID) );
+            // It can possibly be -1 here.
+            return line;
+        }
+    }
 
 
-    // right hand border
-    //
-    dc.DrawLine( GetColRight(col), GetRowTop(row),
-                 GetColRight(col), GetRowBottom(row) );
+    return -1;
+}
 
 
-    // bottom border
-    //
-    dc.DrawLine( GetColLeft(col), GetRowBottom(row),
-                 GetColRight(col), GetRowBottom(row) );
+int wxGrid::YToEdgeOfRow(int y) const
+{
+    return PosToEdgeOfLine(y, wxGridRowOperations());
 }
 
 }
 
-void wxGrid::DrawHighlight(wxDC& dc)
+int wxGrid::XToEdgeOfCol(int x) const
 {
 {
-    if ( IsCellEditControlEnabled() )
-    {
-        // don't show highlight when the edit control is shown
-        return;
-    }
+    return PosToEdgeOfLine(x, wxGridColumnOperations());
+}
 
 
-    // if the active cell was repainted, repaint its highlight too because it
-    // might have been damaged by the grid lines
-    size_t count = m_cellsExposed.GetCount();
-    for ( size_t n = 0; n < count; n++ )
+wxRect wxGrid::CellToRect( int row, int col ) const
+{
+    wxRect rect( -1, -1, -1, -1 );
+
+    if ( row >= 0 && row < m_numRows &&
+         col >= 0 && col < m_numCols )
     {
     {
-        if ( m_cellsExposed[n] == m_currentCellCoords )
-        {
-            wxGridCellAttr* attr = GetCellAttr(m_currentCellCoords);
-            DrawCellHighlight(dc, attr);
-            attr->DecRef();
+        int i, cell_rows, cell_cols;
+        rect.width = rect.height = 0;
+        GetCellSize( row, col, &cell_rows, &cell_cols );
+        // if negative then find multicell owner
+        if (cell_rows < 0)
+            row += cell_rows;
+        if (cell_cols < 0)
+             col += cell_cols;
+        GetCellSize( row, col, &cell_rows, &cell_cols );
 
 
-            break;
+        rect.x = GetColLeft(col);
+        rect.y = GetRowTop(row);
+        for (i=col; i < col + cell_cols; i++)
+            rect.width += GetColWidth(i);
+        for (i=row; i < row + cell_rows; i++)
+            rect.height += GetRowHeight(i);
+
+        // if grid lines are enabled, then the area of the cell is a bit smaller
+        if (m_gridLinesEnabled)
+        {
+            rect.width -= 1;
+            rect.height -= 1;
         }
     }
         }
     }
+
+    return rect;
 }
 
 }
 
-// TODO: remove this ???
-// This is used to redraw all grid lines e.g. when the grid line colour
-// has been changed
-//
-void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & reg )
+bool wxGrid::IsVisible( int row, int col, bool wholeCellVisible ) const
 {
 {
-    if ( !m_gridLinesEnabled ||
-         !m_numRows ||
-         !m_numCols ) return;
+    // get the cell rectangle in logical coords
+    //
+    wxRect r( CellToRect( row, col ) );
 
 
-    int top, bottom, left, right;
+    // convert to device coords
+    //
+    int left, top, right, bottom;
+    CalcScrolledPosition( r.GetLeft(), r.GetTop(), &left, &top );
+    CalcScrolledPosition( r.GetRight(), r.GetBottom(), &right, &bottom );
 
 
-#ifndef __WXGTK__
-    if (reg.IsEmpty())
-    {
-      int cw, ch;
-      m_gridWin->GetClientSize(&cw, &ch);
+    // check against the client area of the grid window
+    int cw, ch;
+    m_gridWin->GetClientSize( &cw, &ch );
 
 
-      // virtual coords of visible area
-      //
-      CalcUnscrolledPosition( 0, 0, &left, &top );
-      CalcUnscrolledPosition( cw, ch, &right, &bottom );
+    if ( wholeCellVisible )
+    {
+        // is the cell wholly visible ?
+        return ( left >= 0 && right <= cw &&
+                 top >= 0 && bottom <= ch );
     }
     else
     {
     }
     else
     {
-      wxCoord x, y, w, h;
-      reg.GetBox(x, y, w, h);
-      CalcUnscrolledPosition( x, y, &left, &top );
-      CalcUnscrolledPosition( x + w, y + h, &right, &bottom );
+        // is the cell partly visible ?
+        //
+        return ( ((left >= 0 && left < cw) || (right > 0 && right <= cw)) &&
+                 ((top >= 0 && top < ch) || (bottom > 0 && bottom <= ch)) );
     }
     }
-#else
-      int cw, ch;
-      m_gridWin->GetClientSize(&cw, &ch);
-      CalcUnscrolledPosition( 0, 0, &left, &top );
-      CalcUnscrolledPosition( cw, ch, &right, &bottom );
-#endif
-
-    // avoid drawing grid lines past the last row and col
-    //
-    right = wxMin( right, GetColRight(m_numCols - 1) );
-    bottom = wxMin( bottom, GetRowBottom(m_numRows - 1) );
-
-    dc.SetPen( wxPen(GetGridLineColour(), 1, wxSOLID) );
+}
 
 
-    // horizontal grid lines
-    //
+// make the specified cell location visible by doing a minimal amount
+// of scrolling
+//
+void wxGrid::MakeCellVisible( int row, int col )
+{
     int i;
     int i;
-    for ( i = 0; i < m_numRows; i++ )
+    int xpos = -1, ypos = -1;
+
+    if ( row >= 0 && row < m_numRows &&
+         col >= 0 && col < m_numCols )
     {
     {
-        int bot = GetRowBottom(i) - 1;
+        // get the cell rectangle in logical coords
+        wxRect r( CellToRect( row, col ) );
 
 
-        if ( bot > bottom )
-        {
-            break;
-        }
+        // convert to device coords
+        int left, top, right, bottom;
+        CalcScrolledPosition( r.GetLeft(), r.GetTop(), &left, &top );
+        CalcScrolledPosition( r.GetRight(), r.GetBottom(), &right, &bottom );
 
 
-        if ( bot >= top )
+        int cw, ch;
+        m_gridWin->GetClientSize( &cw, &ch );
+
+        if ( top < 0 )
         {
         {
-            dc.DrawLine( left, bot, right, bot );
+            ypos = r.GetTop();
         }
         }
-    }
+        else if ( bottom > ch )
+        {
+            int h = r.GetHeight();
+            ypos = r.GetTop();
+            for ( i = row - 1; i >= 0; i-- )
+            {
+                int rowHeight = GetRowHeight(i);
+                if ( h + rowHeight > ch )
+                    break;
 
 
+                h += rowHeight;
+                ypos -= rowHeight;
+            }
 
 
-    // vertical grid lines
-    //
-    for ( i = 0; i < m_numCols; i++ )
-    {
-        int colRight = GetColRight(i) - 1;
-        if ( colRight > right )
+            // we divide it later by GRID_SCROLL_LINE, make sure that we don't
+            // have rounding errors (this is important, because if we do,
+            // we might not scroll at all and some cells won't be redrawn)
+            //
+            // Sometimes GRID_SCROLL_LINE / 2 is not enough,
+            // so just add a full scroll unit...
+            ypos += m_yScrollPixelsPerLine;
+        }
+
+        // special handling for wide cells - show always left part of the cell!
+        // Otherwise, e.g. when stepping from row to row, it would jump between
+        // left and right part of the cell on every step!
+//      if ( left < 0 )
+        if ( left < 0 || (right - left) >= cw )
         {
         {
-            break;
+            xpos = r.GetLeft();
+        }
+        else if ( right > cw )
+        {
+            // position the view so that the cell is on the right
+            int x0, y0;
+            CalcUnscrolledPosition(0, 0, &x0, &y0);
+            xpos = x0 + (right - cw);
+
+            // see comment for ypos above
+            xpos += m_xScrollPixelsPerLine;
         }
 
         }
 
-        if ( colRight >= left )
+        if ( xpos != -1 || ypos != -1 )
         {
         {
-            dc.DrawLine( colRight, top, colRight, bottom );
+            if ( xpos != -1 )
+                xpos /= m_xScrollPixelsPerLine;
+            if ( ypos != -1 )
+                ypos /= m_yScrollPixelsPerLine;
+            Scroll( xpos, ypos );
+            AdjustScrollbars();
         }
     }
 }
 
         }
     }
 }
 
+//
+// ------ Grid cursor movement functions
+//
 
 
-void wxGrid::DrawRowLabels( wxDC& dc )
+bool
+wxGrid::DoMoveCursor(bool expandSelection,
+                     const wxGridDirectionOperations& diroper)
 {
 {
-    if ( !m_numRows || !m_numCols ) return;
+    if ( m_currentCellCoords == wxGridNoCellCoords )
+        return false;
 
 
-    size_t i;
-    size_t numLabels = m_rowLabelsExposed.GetCount();
+    if ( expandSelection )
+    {
+        wxGridCellCoords coords = m_selectedBlockCorner;
+        if ( coords == wxGridNoCellCoords )
+            coords = m_currentCellCoords;
+
+        if ( diroper.IsAtBoundary(coords) )
+            return false;
+
+        diroper.Advance(coords);
 
 
-    for ( i = 0;  i < numLabels;  i++ )
+        UpdateBlockBeingSelected(m_currentCellCoords, coords);
+    }
+    else // don't expand selection
     {
     {
-        DrawRowLabel( dc, m_rowLabelsExposed[i] );
+        ClearSelection();
+
+        if ( diroper.IsAtBoundary(m_currentCellCoords) )
+            return false;
+
+        wxGridCellCoords coords = m_currentCellCoords;
+        diroper.Advance(coords);
+
+        GoToCell(coords);
     }
     }
+
+    return true;
 }
 
 }
 
+bool wxGrid::MoveCursorUp(bool expandSelection)
+{
+    return DoMoveCursor(expandSelection,
+                        wxGridBackwardOperations(this, wxGridRowOperations()));
+}
 
 
-void wxGrid::DrawRowLabel( wxDC& dc, int row )
+bool wxGrid::MoveCursorDown(bool expandSelection)
 {
 {
-    if ( GetRowHeight(row) <= 0 )
-        return;
+    return DoMoveCursor(expandSelection,
+                        wxGridForwardOperations(this, wxGridRowOperations()));
+}
 
 
-    int rowTop = GetRowTop(row),
-        rowBottom = GetRowBottom(row) - 1;
+bool wxGrid::MoveCursorLeft(bool expandSelection)
+{
+    return DoMoveCursor(expandSelection,
+                        wxGridBackwardOperations(this, wxGridColumnOperations()));
+}
 
 
-    dc.SetPen( *wxBLACK_PEN );
-    dc.DrawLine( m_rowLabelWidth-1, rowTop,
-                 m_rowLabelWidth-1, rowBottom );
+bool wxGrid::MoveCursorRight(bool expandSelection)
+{
+    return DoMoveCursor(expandSelection,
+                        wxGridForwardOperations(this, wxGridColumnOperations()));
+}
 
 
-    dc.DrawLine( 0, rowBottom, m_rowLabelWidth-1, rowBottom );
+bool wxGrid::DoMoveCursorByPage(const wxGridDirectionOperations& diroper)
+{
+    if ( m_currentCellCoords == wxGridNoCellCoords )
+        return false;
 
 
-    dc.SetPen( *wxWHITE_PEN );
-    dc.DrawLine( 0, rowTop, 0, rowBottom );
-    dc.DrawLine( 0, rowTop, m_rowLabelWidth-1, rowTop );
+    if ( diroper.IsAtBoundary(m_currentCellCoords) )
+        return false;
 
 
-    dc.SetBackgroundMode( wxTRANSPARENT );
-    dc.SetTextForeground( GetLabelTextColour() );
-    dc.SetFont( GetLabelFont() );
+    const int oldRow = m_currentCellCoords.GetRow();
+    int newRow = diroper.MoveByPixelDistance(oldRow, m_gridWin->GetClientSize().y);
+    if ( newRow == oldRow )
+    {
+        wxGridCellCoords coords(m_currentCellCoords);
+        diroper.Advance(coords);
+        newRow = coords.GetRow();
+    }
 
 
-    int hAlign, vAlign;
-    GetRowLabelAlignment( &hAlign, &vAlign );
+    GoToCell(newRow, m_currentCellCoords.GetCol());
 
 
-    wxRect rect;
-    rect.SetX( 2 );
-    rect.SetY( GetRowTop(row) + 2 );
-    rect.SetWidth( m_rowLabelWidth - 4 );
-    rect.SetHeight( GetRowHeight(row) - 4 );
-    DrawTextRectangle( dc, GetRowLabelValue( row ), rect, hAlign, vAlign );
+    return true;
 }
 
 }
 
-
-void wxGrid::DrawColLabels( wxDC& dc )
+bool wxGrid::MovePageUp()
 {
 {
-    if ( !m_numRows || !m_numCols ) return;
+    return DoMoveCursorByPage(
+                wxGridBackwardOperations(this, wxGridRowOperations()));
+}
 
 
-    size_t i;
-    size_t numLabels = m_colLabelsExposed.GetCount();
+bool wxGrid::MovePageDown()
+{
+    return DoMoveCursorByPage(
+                wxGridForwardOperations(this, wxGridRowOperations()));
+}
 
 
-    for ( i = 0;  i < numLabels;  i++ )
+// helper of DoMoveCursorByBlock(): advance the cell coordinates using diroper
+// until we find a non-empty cell or reach the grid end
+void
+wxGrid::AdvanceToNextNonEmpty(wxGridCellCoords& coords,
+                              const wxGridDirectionOperations& diroper)
+{
+    while ( !diroper.IsAtBoundary(coords) )
     {
     {
-        DrawColLabel( dc, m_colLabelsExposed[i] );
+        diroper.Advance(coords);
+        if ( !m_table->IsEmpty(coords) )
+            break;
     }
 }
 
     }
 }
 
-
-void wxGrid::DrawColLabel( wxDC& dc, int col )
+bool
+wxGrid::DoMoveCursorByBlock(bool expandSelection,
+                            const wxGridDirectionOperations& diroper)
 {
 {
-    if ( GetColWidth(col) <= 0 )
-        return;
+    if ( !m_table || m_currentCellCoords == wxGridNoCellCoords )
+        return false;
 
 
-    int colLeft = GetColLeft(col),
-        colRight = GetColRight(col) - 1;
+    if ( diroper.IsAtBoundary(m_currentCellCoords) )
+        return false;
 
 
-    dc.SetPen( *wxBLACK_PEN );
-    dc.DrawLine( colRight, 0,
-                 colRight, m_colLabelHeight-1 );
+    wxGridCellCoords coords(m_currentCellCoords);
+    if ( m_table->IsEmpty(coords) )
+    {
+        // we are in an empty cell: find the next block of non-empty cells
+        AdvanceToNextNonEmpty(coords, diroper);
+    }
+    else // current cell is not empty
+    {
+        diroper.Advance(coords);
+        if ( m_table->IsEmpty(coords) )
+        {
+            // we started at the end of a block, find the next one
+            AdvanceToNextNonEmpty(coords, diroper);
+        }
+        else // we're in a middle of a block
+        {
+            // go to the end of it, i.e. find the last cell before the next
+            // empty one
+            while ( !diroper.IsAtBoundary(coords) )
+            {
+                wxGridCellCoords coordsNext(coords);
+                diroper.Advance(coordsNext);
+                if ( m_table->IsEmpty(coordsNext) )
+                    break;
 
 
-    dc.DrawLine( colLeft, m_colLabelHeight-1,
-                 colRight, m_colLabelHeight-1 );
+                coords = coordsNext;
+            }
+        }
+    }
 
 
-    dc.SetPen( *wxWHITE_PEN );
-    dc.DrawLine( colLeft, 0, colLeft, m_colLabelHeight-1 );
-    dc.DrawLine( colLeft, 0, colRight, 0 );
+    if ( expandSelection )
+    {
+        UpdateBlockBeingSelected(m_currentCellCoords, coords);
+    }
+    else
+    {
+        ClearSelection();
+        GoToCell(coords);
+    }
 
 
-    dc.SetBackgroundMode( wxTRANSPARENT );
-    dc.SetTextForeground( GetLabelTextColour() );
-    dc.SetFont( GetLabelFont() );
+    return true;
+}
 
 
-    dc.SetBackgroundMode( wxTRANSPARENT );
-    dc.SetTextForeground( GetLabelTextColour() );
-    dc.SetFont( GetLabelFont() );
+bool wxGrid::MoveCursorUpBlock(bool expandSelection)
+{
+    return DoMoveCursorByBlock(
+                expandSelection,
+                wxGridBackwardOperations(this, wxGridRowOperations())
+           );
+}
 
 
-    int hAlign, vAlign;
-    GetColLabelAlignment( &hAlign, &vAlign );
+bool wxGrid::MoveCursorDownBlock( bool expandSelection )
+{
+    return DoMoveCursorByBlock(
+                expandSelection,
+                wxGridForwardOperations(this, wxGridRowOperations())
+           );
+}
 
 
-    wxRect rect;
-    rect.SetX( colLeft + 2 );
-    rect.SetY( 2 );
-    rect.SetWidth( GetColWidth(col) - 4 );
-    rect.SetHeight( m_colLabelHeight - 4 );
-    DrawTextRectangle( dc, GetColLabelValue( col ), rect, hAlign, vAlign );
+bool wxGrid::MoveCursorLeftBlock( bool expandSelection )
+{
+    return DoMoveCursorByBlock(
+                expandSelection,
+                wxGridBackwardOperations(this, wxGridColumnOperations())
+           );
 }
 
 }
 
+bool wxGrid::MoveCursorRightBlock( bool expandSelection )
+{
+    return DoMoveCursorByBlock(
+                expandSelection,
+                wxGridForwardOperations(this, wxGridColumnOperations())
+           );
+}
 
 
-void wxGrid::DrawTextRectangle( wxDC& dc,
-                                const wxString& value,
-                                const wxRect& rect,
-                                int horizAlign,
-                                int vertAlign )
+//
+// ------ Label values and formatting
+//
+
+void wxGrid::GetRowLabelAlignment( int *horiz, int *vert ) const
 {
 {
-    long textWidth, textHeight;
-    long lineWidth, lineHeight;
-    wxArrayString lines;
+    if ( horiz )
+        *horiz = m_rowLabelHorizAlign;
+    if ( vert )
+        *vert  = m_rowLabelVertAlign;
+}
 
 
-    dc.SetClippingRegion( rect );
-    StringToLines( value, lines );
-    if ( lines.GetCount() )
-    {
-        GetTextBoxSize( dc, lines, &textWidth, &textHeight );
-        dc.GetTextExtent( lines[0], &lineWidth, &lineHeight );
+void wxGrid::GetColLabelAlignment( int *horiz, int *vert ) const
+{
+    if ( horiz )
+        *horiz = m_colLabelHorizAlign;
+    if ( vert )
+        *vert  = m_colLabelVertAlign;
+}
 
 
-        float x, y;
-        switch ( horizAlign )
-        {
-            case wxRIGHT:
-                x = rect.x + (rect.width - textWidth - 1);
-                break;
+int wxGrid::GetColLabelTextOrientation() const
+{
+    return m_colLabelTextOrientation;
+}
 
 
-            case wxCENTRE:
-                x = rect.x + ((rect.width - textWidth)/2);
-                break;
+wxString wxGrid::GetRowLabelValue( int row ) const
+{
+    if ( m_table )
+    {
+        return m_table->GetRowLabelValue( row );
+    }
+    else
+    {
+        wxString s;
+        s << row;
+        return s;
+    }
+}
 
 
-            case wxLEFT:
-            default:
-                x = rect.x + 1;
-                break;
-        }
+wxString wxGrid::GetColLabelValue( int col ) const
+{
+    if ( m_table )
+    {
+        return m_table->GetColLabelValue( col );
+    }
+    else
+    {
+        wxString s;
+        s << col;
+        return s;
+    }
+}
 
 
-        switch ( vertAlign )
-        {
-            case wxBOTTOM:
-                y = rect.y + (rect.height - textHeight - 1);
-                break;
+void wxGrid::SetRowLabelSize( int width )
+{
+    wxASSERT( width >= 0 || width == wxGRID_AUTOSIZE );
 
 
-            case wxCENTRE:
-                y = rect.y + ((rect.height - textHeight)/2);
-                break;
+    if ( width == wxGRID_AUTOSIZE )
+    {
+        width = CalcColOrRowLabelAreaMinSize(wxGRID_ROW);
+    }
 
 
-            case wxTOP:
-            default:
-                y = rect.y + 1;
-                break;
+    if ( width != m_rowLabelWidth )
+    {
+        if ( width == 0 )
+        {
+            m_rowLabelWin->Show( false );
+            m_cornerLabelWin->Show( false );
         }
         }
-
-        for ( size_t i = 0;  i < lines.GetCount();  i++ )
+        else if ( m_rowLabelWidth == 0 )
         {
         {
-            dc.DrawText( lines[i], (long)x, (long)y );
-            y += lineHeight;
+            m_rowLabelWin->Show( true );
+            if ( m_colLabelHeight > 0 )
+                m_cornerLabelWin->Show( true );
         }
         }
-    }
 
 
-    dc.DestroyClippingRegion();
+        m_rowLabelWidth = width;
+        InvalidateBestSize();
+        CalcWindowSizes();
+        wxScrolledWindow::Refresh( true );
+    }
 }
 
 }
 
-
-// Split multi line text up into an array of strings.  Any existing
-// contents of the string array are preserved.
-//
-void wxGrid::StringToLines( const wxString& value, wxArrayString& lines )
+void wxGrid::SetColLabelSize( int height )
 {
 {
-    int startPos = 0;
-    int pos;
-    wxString eol = wxTextFile::GetEOL( wxTextFileType_Unix );
-    wxString tVal = wxTextFile::Translate( value, wxTextFileType_Unix );
+    wxASSERT( height >=0 || height == wxGRID_AUTOSIZE );
 
 
-    while ( startPos < (int)tVal.Length() )
+    if ( height == wxGRID_AUTOSIZE )
     {
     {
-        pos = tVal.Mid(startPos).Find( eol );
-        if ( pos < 0 )
+        height = CalcColOrRowLabelAreaMinSize(wxGRID_COLUMN);
+    }
+
+    if ( height != m_colLabelHeight )
+    {
+        if ( height == 0 )
         {
         {
-            break;
+            m_colWindow->Show( false );
+            m_cornerLabelWin->Show( false );
         }
         }
-        else if ( pos == 0 )
+        else if ( m_colLabelHeight == 0 )
         {
         {
-            lines.Add( wxEmptyString );
+            m_colWindow->Show( true );
+            if ( m_rowLabelWidth > 0 )
+                m_cornerLabelWin->Show( true );
         }
         }
-        else
+
+        m_colLabelHeight = height;
+        InvalidateBestSize();
+        CalcWindowSizes();
+        wxScrolledWindow::Refresh( true );
+    }
+}
+
+void wxGrid::SetLabelBackgroundColour( const wxColour& colour )
+{
+    if ( m_labelBackgroundColour != colour )
+    {
+        m_labelBackgroundColour = colour;
+        m_rowLabelWin->SetBackgroundColour( colour );
+        m_colWindow->SetBackgroundColour( colour );
+        m_cornerLabelWin->SetBackgroundColour( colour );
+
+        if ( !GetBatchCount() )
         {
         {
-            lines.Add( value.Mid(startPos, pos) );
+            m_rowLabelWin->Refresh();
+            m_colWindow->Refresh();
+            m_cornerLabelWin->Refresh();
         }
         }
-        startPos += pos+1;
     }
     }
-    if ( startPos < (int)value.Length() )
+}
+
+void wxGrid::SetLabelTextColour( const wxColour& colour )
+{
+    if ( m_labelTextColour != colour )
     {
     {
-        lines.Add( value.Mid( startPos ) );
+        m_labelTextColour = colour;
+        if ( !GetBatchCount() )
+        {
+            m_rowLabelWin->Refresh();
+            m_colWindow->Refresh();
+        }
     }
 }
 
     }
 }
 
-
-void wxGrid::GetTextBoxSize( wxDC& dc,
-                             wxArrayString& lines,
-                             long *width, long *height )
+void wxGrid::SetLabelFont( const wxFont& font )
 {
 {
-    long w = 0;
-    long h = 0;
-    long lineW, lineH;
-
-    size_t i;
-    for ( i = 0;  i < lines.GetCount();  i++ )
+    m_labelFont = font;
+    if ( !GetBatchCount() )
     {
     {
-        dc.GetTextExtent( lines[i], &lineW, &lineH );
-        w = wxMax( w, lineW );
-        h += lineH;
+        m_rowLabelWin->Refresh();
+        m_colWindow->Refresh();
     }
     }
-
-    *width = w;
-    *height = h;
 }
 
 }
 
+void wxGrid::SetRowLabelAlignment( int horiz, int vert )
+{
+    // allow old (incorrect) defs to be used
+    switch ( horiz )
+    {
+        case wxLEFT:   horiz = wxALIGN_LEFT; break;
+        case wxRIGHT:  horiz = wxALIGN_RIGHT; break;
+        case wxCENTRE: horiz = wxALIGN_CENTRE; break;
+    }
 
 
-//
-// ------ Edit control functions
-//
+    switch ( vert )
+    {
+        case wxTOP:    vert = wxALIGN_TOP;    break;
+        case wxBOTTOM: vert = wxALIGN_BOTTOM; break;
+        case wxCENTRE: vert = wxALIGN_CENTRE; break;
+    }
 
 
+    if ( horiz == wxALIGN_LEFT || horiz == wxALIGN_CENTRE || horiz == wxALIGN_RIGHT )
+    {
+        m_rowLabelHorizAlign = horiz;
+    }
 
 
-void wxGrid::EnableEditing( bool edit )
-{
-    // TODO: improve this ?
-    //
-    if ( edit != m_editable )
+    if ( vert == wxALIGN_TOP || vert == wxALIGN_CENTRE || vert == wxALIGN_BOTTOM )
     {
     {
-        m_editable = edit;
+        m_rowLabelVertAlign = vert;
+    }
 
 
-        // FIXME IMHO this won't disable the edit control if edit == FALSE
-        //       because of the check in the beginning of
-        //       EnableCellEditControl() just below (VZ)
-        EnableCellEditControl(m_editable);
+    if ( !GetBatchCount() )
+    {
+        m_rowLabelWin->Refresh();
     }
 }
 
     }
 }
 
-
-void wxGrid::EnableCellEditControl( bool enable )
+void wxGrid::SetColLabelAlignment( int horiz, int vert )
 {
 {
-    if (! m_editable)
-        return;
-
-    if ( m_currentCellCoords == wxGridNoCellCoords )
-        SetCurrentCell( 0, 0 );
-
-    if ( enable != m_cellEditCtrlEnabled )
+    // allow old (incorrect) defs to be used
+    switch ( horiz )
     {
     {
-        // TODO allow the app to Veto() this event?
-        SendEvent(enable ? wxEVT_GRID_EDITOR_SHOWN : wxEVT_GRID_EDITOR_HIDDEN);
+        case wxLEFT:   horiz = wxALIGN_LEFT; break;
+        case wxRIGHT:  horiz = wxALIGN_RIGHT; break;
+        case wxCENTRE: horiz = wxALIGN_CENTRE; break;
+    }
 
 
-        if ( enable )
-        {
-            // this should be checked by the caller!
-            wxASSERT_MSG( CanEnableCellControl(),
-                          _T("can't enable editing for this cell!") );
+    switch ( vert )
+    {
+        case wxTOP:    vert = wxALIGN_TOP;    break;
+        case wxBOTTOM: vert = wxALIGN_BOTTOM; break;
+        case wxCENTRE: vert = wxALIGN_CENTRE; break;
+    }
 
 
-            // do it before ShowCellEditControl()
-            m_cellEditCtrlEnabled = enable;
+    if ( horiz == wxALIGN_LEFT || horiz == wxALIGN_CENTRE || horiz == wxALIGN_RIGHT )
+    {
+        m_colLabelHorizAlign = horiz;
+    }
 
 
-            ShowCellEditControl();
-        }
-        else
-        {
-            HideCellEditControl();
-            SaveEditControlValue();
+    if ( vert == wxALIGN_TOP || vert == wxALIGN_CENTRE || vert == wxALIGN_BOTTOM )
+    {
+        m_colLabelVertAlign = vert;
+    }
 
 
-            // do it after HideCellEditControl()
-            m_cellEditCtrlEnabled = enable;
-        }
+    if ( !GetBatchCount() )
+    {
+        m_colWindow->Refresh();
     }
 }
 
     }
 }
 
-bool wxGrid::IsCurrentCellReadOnly() const
+// Note: under MSW, the default column label font must be changed because it
+//       does not support vertical printing
+//
+// Example: wxFont font(9, wxSWISS, wxNORMAL, wxBOLD);
+//                      pGrid->SetLabelFont(font);
+//                      pGrid->SetColLabelTextOrientation(wxVERTICAL);
+//
+void wxGrid::SetColLabelTextOrientation( int textOrientation )
 {
 {
-    // const_cast
-    wxGridCellAttr* attr = ((wxGrid *)this)->GetCellAttr(m_currentCellCoords);
-    bool readonly = attr->IsReadOnly();
-    attr->DecRef();
+    if ( textOrientation == wxHORIZONTAL || textOrientation == wxVERTICAL )
+        m_colLabelTextOrientation = textOrientation;
 
 
-    return readonly;
-}
-
-bool wxGrid::CanEnableCellControl() const
-{
-    return m_editable && !IsCurrentCellReadOnly();
+    if ( !GetBatchCount() )
+        m_colWindow->Refresh();
 }
 
 }
 
-bool wxGrid::IsCellEditControlEnabled() const
+void wxGrid::SetRowLabelValue( int row, const wxString& s )
 {
 {
-    // the cell edit control might be disable for all cells or just for the
-    // current one if it's read only
-    return m_cellEditCtrlEnabled ? !IsCurrentCellReadOnly() : FALSE;
+    if ( m_table )
+    {
+        m_table->SetRowLabelValue( row, s );
+        if ( !GetBatchCount() )
+        {
+            wxRect rect = CellToRect( row, 0 );
+            if ( rect.height > 0 )
+            {
+                CalcScrolledPosition(0, rect.y, &rect.x, &rect.y);
+                rect.x = 0;
+                rect.width = m_rowLabelWidth;
+                m_rowLabelWin->Refresh( true, &rect );
+            }
+        }
+    }
 }
 
 }
 
-void wxGrid::ShowCellEditControl()
+void wxGrid::SetColLabelValue( int col, const wxString& s )
 {
 {
-    if ( IsCellEditControlEnabled() )
+    if ( m_table )
     {
     {
-        if ( !IsVisible( m_currentCellCoords ) )
-        {
-            return;
-        }
-        else
+        m_table->SetColLabelValue( col, s );
+        if ( !GetBatchCount() )
         {
         {
-            wxRect rect = CellToRect( m_currentCellCoords );
-            int row = m_currentCellCoords.GetRow();
-            int col = m_currentCellCoords.GetCol();
-
-            // convert to scrolled coords
-            //
-            CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
-
-            // done in PaintBackground()
-#if 0
-            // erase the highlight and the cell contents because the editor
-            // might not cover the entire cell
-            wxClientDC dc( m_gridWin );
-            PrepareDC( dc );
-            dc.SetBrush(*wxLIGHT_GREY_BRUSH); //wxBrush(attr->GetBackgroundColour(), wxSOLID));
-            dc.SetPen(*wxTRANSPARENT_PEN);
-            dc.DrawRectangle(rect);
-#endif // 0
-
-            // cell is shifted by one pixel
-            rect.x--;
-            rect.y--;
-
-            wxGridCellAttr* attr = GetCellAttr(row, col);
-            wxGridCellEditor* editor = attr->GetEditor(this, row, col);
-            if ( !editor->IsCreated() )
+            if ( m_useNativeHeader )
             {
             {
-                editor->Create(m_gridWin, -1,
-                               new wxGridCellEditorEvtHandler(this, editor));
+                GetGridColHeader()->UpdateColumn(col);
             }
             }
+            else
+            {
+                wxRect rect = CellToRect( 0, col );
+                if ( rect.width > 0 )
+                {
+                    CalcScrolledPosition(rect.x, 0, &rect.x, &rect.y);
+                    rect.y = 0;
+                    rect.height = m_colLabelHeight;
+                    GetColLabelWindow()->Refresh( true, &rect );
+                }
+            }
+        }
+    }
+}
 
 
-            editor->Show( TRUE, attr );
-
-            editor->SetSize( rect );
-
-            editor->BeginEdit(row, col, this);
+void wxGrid::SetGridLineColour( const wxColour& colour )
+{
+    if ( m_gridLineColour != colour )
+    {
+        m_gridLineColour = colour;
 
 
-            editor->DecRef();
-            attr->DecRef();
-         }
+        if ( GridLinesEnabled() )
+            RedrawGridLines();
     }
 }
 
     }
 }
 
-
-void wxGrid::HideCellEditControl()
+void wxGrid::SetCellHighlightColour( const wxColour& colour )
 {
 {
-    if ( IsCellEditControlEnabled() )
+    if ( m_cellHighlightColour != colour )
     {
     {
-        int row = m_currentCellCoords.GetRow();
-        int col = m_currentCellCoords.GetCol();
+        m_cellHighlightColour = colour;
 
 
-        wxGridCellAttr* attr = GetCellAttr(row, col);
-        wxGridCellEditor *editor = attr->GetEditor(this, row, col);
-        editor->Show( FALSE );
-        editor->DecRef();
+        wxClientDC dc( m_gridWin );
+        PrepareDC( dc );
+        wxGridCellAttr* attr = GetCellAttr(m_currentCellCoords);
+        DrawCellHighlight(dc, attr);
         attr->DecRef();
         attr->DecRef();
-        m_gridWin->SetFocus();
     }
 }
 
     }
 }
 
-
-void wxGrid::SaveEditControlValue()
+void wxGrid::SetCellHighlightPenWidth(int width)
 {
 {
-    if ( IsCellEditControlEnabled() )
+    if (m_cellHighlightPenWidth != width)
     {
     {
+        m_cellHighlightPenWidth = width;
+
+        // Just redrawing the cell highlight is not enough since that won't
+        // make any visible change if the thickness is getting smaller.
         int row = m_currentCellCoords.GetRow();
         int col = m_currentCellCoords.GetCol();
         int row = m_currentCellCoords.GetRow();
         int col = m_currentCellCoords.GetCol();
+        if ( row == -1 || col == -1 || GetColWidth(col) <= 0 || GetRowHeight(row) <= 0 )
+            return;
 
 
-        wxGridCellAttr* attr = GetCellAttr(row, col);
-        wxGridCellEditor* editor = attr->GetEditor(this, row, col);
-        bool changed = editor->EndEdit(row, col, this);
-
-        editor->DecRef();
-        attr->DecRef();
-
-        if (changed)
-        {
-            SendEvent( wxEVT_GRID_CELL_CHANGE,
-                       m_currentCellCoords.GetRow(),
-                       m_currentCellCoords.GetCol() );
-        }
+        wxRect rect = CellToRect(row, col);
+        m_gridWin->Refresh(true, &rect);
     }
 }
 
     }
 }
 
-
-//
-// ------ Grid location functions
-//  Note that all of these functions work with the logical coordinates of
-//  grid cells and labels so you will need to convert from device
-//  coordinates for mouse events etc.
-//
-
-void wxGrid::XYToCell( int x, int y, wxGridCellCoords& coords )
+void wxGrid::SetCellHighlightROPenWidth(int width)
 {
 {
-    int row = YToRow(y);
-    int col = XToCol(x);
-
-    if ( row == -1  ||  col == -1 )
+    if (m_cellHighlightROPenWidth != width)
     {
     {
-        coords = wxGridNoCellCoords;
-    }
-    else
-    {
-        coords.Set( row, col );
-    }
-}
-
+        m_cellHighlightROPenWidth = width;
 
 
-int wxGrid::YToRow( int y )
-{
-    int i;
+        // Just redrawing the cell highlight is not enough since that won't
+        // make any visible change if the thickness is getting smaller.
+        int row = m_currentCellCoords.GetRow();
+        int col = m_currentCellCoords.GetCol();
+        if ( row == -1 || col == -1 ||
+                GetColWidth(col) <= 0 || GetRowHeight(row) <= 0 )
+            return;
 
 
-    for ( i = 0;  i < m_numRows;  i++ )
-    {
-        if ( y < GetRowBottom(i) )
-            return i;
+        wxRect rect = CellToRect(row, col);
+        m_gridWin->Refresh(true, &rect);
     }
     }
-
-    return -1;
 }
 
 }
 
-
-int wxGrid::XToCol( int x )
+void wxGrid::RedrawGridLines()
 {
 {
-    int i;
+    // the lines will be redrawn when the window is thawn
+    if ( GetBatchCount() )
+        return;
 
 
-    for ( i = 0;  i < m_numCols;  i++ )
+    if ( GridLinesEnabled() )
     {
     {
-        if ( x < GetColRight(i) )
-            return i;
+        wxClientDC dc( m_gridWin );
+        PrepareDC( dc );
+        DrawAllGridLines( dc, wxRegion() );
+    }
+    else // remove the grid lines
+    {
+        m_gridWin->Refresh();
     }
     }
-
-    return -1;
 }
 
 }
 
-
-// return the row number that that the y coord is near the edge of, or
-// -1 if not near an edge
-//
-int wxGrid::YToEdgeOfRow( int y )
+void wxGrid::EnableGridLines( bool enable )
 {
 {
-    int i, d;
-
-    for ( i = 0;  i < m_numRows;  i++ )
+    if ( enable != m_gridLinesEnabled )
     {
     {
-        if ( GetRowHeight(i) > WXGRID_LABEL_EDGE_ZONE )
-        {
-            d = abs( y - GetRowBottom(i) );
-            if ( d < WXGRID_LABEL_EDGE_ZONE )
-                return i;
-        }
-    }
+        m_gridLinesEnabled = enable;
 
 
-    return -1;
+        RedrawGridLines();
+    }
 }
 
 }
 
-
-// return the col number that that the x coord is near the edge of, or
-// -1 if not near an edge
-//
-int wxGrid::XToEdgeOfCol( int x )
+void wxGrid::DoClipGridLines(bool& var, bool clip)
 {
 {
-    int i, d;
-
-    for ( i = 0;  i < m_numCols;  i++ )
+    if ( clip != var )
     {
     {
-        if ( GetColWidth(i) > WXGRID_LABEL_EDGE_ZONE )
-        {
-            d = abs( x - GetColRight(i) );
-            if ( d < WXGRID_LABEL_EDGE_ZONE )
-                return i;
-        }
-    }
+        var = clip;
 
 
-    return -1;
+        if ( GridLinesEnabled() )
+            RedrawGridLines();
+    }
 }
 
 }
 
-
-wxRect wxGrid::CellToRect( int row, int col )
+int wxGrid::GetDefaultRowSize() const
 {
 {
-    wxRect rect( -1, -1, -1, -1 );
+    return m_defaultRowHeight;
+}
 
 
-    if ( row >= 0  &&  row < m_numRows  &&
-         col >= 0  &&  col < m_numCols )
-    {
-        rect.x = GetColLeft(col);
-        rect.y = GetRowTop(row);
-        rect.width = GetColWidth(col);
-        rect.height = GetRowHeight(row);
-    }
+int wxGrid::GetRowSize( int row ) const
+{
+    wxCHECK_MSG( row >= 0 && row < m_numRows, 0, wxT("invalid row index") );
 
 
-    return rect;
+    return GetRowHeight(row);
 }
 
 }
 
+int wxGrid::GetDefaultColSize() const
+{
+    return m_defaultColWidth;
+}
 
 
-bool wxGrid::IsVisible( int row, int col, bool wholeCellVisible )
+int wxGrid::GetColSize( int col ) const
 {
 {
-    // get the cell rectangle in logical coords
-    //
-    wxRect r( CellToRect( row, col ) );
+    wxCHECK_MSG( col >= 0 && col < m_numCols, 0, wxT("invalid column index") );
 
 
-    // convert to device coords
-    //
-    int left, top, right, bottom;
-    CalcScrolledPosition( r.GetLeft(), r.GetTop(), &left, &top );
-    CalcScrolledPosition( r.GetRight(), r.GetBottom(), &right, &bottom );
+    return GetColWidth(col);
+}
 
 
-    // check against the client area of the grid window
-    //
-    int cw, ch;
-    m_gridWin->GetClientSize( &cw, &ch );
+// ============================================================================
+// access to the grid attributes: each of them has a default value in the grid
+// itself and may be overidden on a per-cell basis
+// ============================================================================
 
 
-    if ( wholeCellVisible )
-    {
-        // is the cell wholly visible ?
-        //
-        return ( left >= 0  &&  right <= cw  &&
-                 top >= 0  &&  bottom <= ch );
-    }
-    else
-    {
-        // is the cell partly visible ?
-        //
-        return ( ((left >=0 && left < cw) || (right > 0 && right <= cw))  &&
-                 ((top >=0 && top < ch) || (bottom > 0 && bottom <= ch)) );
-    }
+// ----------------------------------------------------------------------------
+// setting default attributes
+// ----------------------------------------------------------------------------
+
+void wxGrid::SetDefaultCellBackgroundColour( const wxColour& col )
+{
+    m_defaultCellAttr->SetBackgroundColour(col);
+#ifdef __WXGTK__
+    m_gridWin->SetBackgroundColour(col);
+#endif
 }
 
 }
 
+void wxGrid::SetDefaultCellTextColour( const wxColour& col )
+{
+    m_defaultCellAttr->SetTextColour(col);
+}
 
 
-// make the specified cell location visible by doing a minimal amount
-// of scrolling
-//
-void wxGrid::MakeCellVisible( int row, int col )
+void wxGrid::SetDefaultCellAlignment( int horiz, int vert )
 {
 {
-    int i;
-    int xpos = -1, ypos = -1;
+    m_defaultCellAttr->SetAlignment(horiz, vert);
+}
 
 
-    if ( row >= 0  &&  row < m_numRows  &&
-         col >= 0  &&  col < m_numCols )
-    {
-        // get the cell rectangle in logical coords
-        //
-        wxRect r( CellToRect( row, col ) );
+void wxGrid::SetDefaultCellOverflow( bool allow )
+{
+    m_defaultCellAttr->SetOverflow(allow);
+}
 
 
-        // convert to device coords
-        //
-        int left, top, right, bottom;
-        CalcScrolledPosition( r.GetLeft(), r.GetTop(), &left, &top );
-        CalcScrolledPosition( r.GetRight(), r.GetBottom(), &right, &bottom );
+void wxGrid::SetDefaultCellFont( const wxFont& font )
+{
+    m_defaultCellAttr->SetFont(font);
+}
 
 
-        int cw, ch;
-        m_gridWin->GetClientSize( &cw, &ch );
+// For editors and renderers the type registry takes precedence over the
+// default attr, so we need to register the new editor/renderer for the string
+// data type in order to make setting a default editor/renderer appear to
+// work correctly.
 
 
-        if ( top < 0 )
-        {
-            ypos = r.GetTop();
-        }
-        else if ( bottom > ch )
-        {
-            int h = r.GetHeight();
-            ypos = r.GetTop();
-            for ( i = row-1;  i >= 0;  i-- )
-            {
-                int rowHeight = GetRowHeight(i);
-                if ( h + rowHeight > ch )
-                    break;
+void wxGrid::SetDefaultRenderer(wxGridCellRenderer *renderer)
+{
+    RegisterDataType(wxGRID_VALUE_STRING,
+                     renderer,
+                     GetDefaultEditorForType(wxGRID_VALUE_STRING));
+}
 
 
-                h += rowHeight;
-                ypos -= rowHeight;
-            }
+void wxGrid::SetDefaultEditor(wxGridCellEditor *editor)
+{
+    RegisterDataType(wxGRID_VALUE_STRING,
+                     GetDefaultRendererForType(wxGRID_VALUE_STRING),
+                     editor);
+}
 
 
-            // we divide it later by GRID_SCROLL_LINE, make sure that we don't
-            // have rounding errors (this is important, because if we do, we
-            // might not scroll at all and some cells won't be redrawn)
-            ypos += GRID_SCROLL_LINE / 2;
-        }
+// ----------------------------------------------------------------------------
+// access to the default attributes
+// ----------------------------------------------------------------------------
 
 
-        if ( left < 0 )
-        {
-            xpos = r.GetLeft();
-        }
-        else if ( right > cw )
-        {
-            int w = r.GetWidth();
-            xpos = r.GetLeft();
-            for ( i = col-1;  i >= 0;  i-- )
-            {
-                int colWidth = GetColWidth(i);
-                if ( w + colWidth > cw )
-                    break;
+wxColour wxGrid::GetDefaultCellBackgroundColour() const
+{
+    return m_defaultCellAttr->GetBackgroundColour();
+}
 
 
-                w += colWidth;
-                xpos -= colWidth;
-            }
+wxColour wxGrid::GetDefaultCellTextColour() const
+{
+    return m_defaultCellAttr->GetTextColour();
+}
 
 
-            // see comment for ypos above
-            xpos += GRID_SCROLL_LINE / 2;
-        }
+wxFont wxGrid::GetDefaultCellFont() const
+{
+    return m_defaultCellAttr->GetFont();
+}
 
 
-        if ( xpos != -1  ||  ypos != -1 )
-        {
-            if ( xpos != -1 ) xpos /= GRID_SCROLL_LINE;
-            if ( ypos != -1 ) ypos /= GRID_SCROLL_LINE;
-            Scroll( xpos, ypos );
-            AdjustScrollbars();
-        }
-    }
+void wxGrid::GetDefaultCellAlignment( int *horiz, int *vert ) const
+{
+    m_defaultCellAttr->GetAlignment(horiz, vert);
 }
 
 }
 
+bool wxGrid::GetDefaultCellOverflow() const
+{
+    return m_defaultCellAttr->GetOverflow();
+}
 
 
-//
-// ------ Grid cursor movement functions
-//
+wxGridCellRenderer *wxGrid::GetDefaultRenderer() const
+{
+    return m_defaultCellAttr->GetRenderer(NULL, 0, 0);
+}
 
 
-bool wxGrid::MoveCursorUp()
+wxGridCellEditor *wxGrid::GetDefaultEditor() const
 {
 {
-    if ( m_currentCellCoords != wxGridNoCellCoords  &&
-         m_currentCellCoords.GetRow() > 0 )
-    {
-        MakeCellVisible( m_currentCellCoords.GetRow() - 1,
-                        m_currentCellCoords.GetCol() );
+    return m_defaultCellAttr->GetEditor(NULL, 0, 0);
+}
 
 
-        SetCurrentCell( m_currentCellCoords.GetRow() - 1,
-                        m_currentCellCoords.GetCol() );
+// ----------------------------------------------------------------------------
+// access to cell attributes
+// ----------------------------------------------------------------------------
 
 
-        return TRUE;
-    }
+wxColour wxGrid::GetCellBackgroundColour(int row, int col) const
+{
+    wxGridCellAttr *attr = GetCellAttr(row, col);
+    wxColour colour = attr->GetBackgroundColour();
+    attr->DecRef();
 
 
-    return FALSE;
+    return colour;
 }
 
 }
 
-
-bool wxGrid::MoveCursorDown()
+wxColour wxGrid::GetCellTextColour( int row, int col ) const
 {
 {
-    // TODO: allow for scrolling
-    //
-    if ( m_currentCellCoords != wxGridNoCellCoords  &&
-         m_currentCellCoords.GetRow() < m_numRows-1 )
-    {
-        MakeCellVisible( m_currentCellCoords.GetRow() + 1,
-                        m_currentCellCoords.GetCol() );
+    wxGridCellAttr *attr = GetCellAttr(row, col);
+    wxColour colour = attr->GetTextColour();
+    attr->DecRef();
 
 
-        SetCurrentCell( m_currentCellCoords.GetRow() + 1,
-                        m_currentCellCoords.GetCol() );
+    return colour;
+}
 
 
-        return TRUE;
-    }
+wxFont wxGrid::GetCellFont( int row, int col ) const
+{
+    wxGridCellAttr *attr = GetCellAttr(row, col);
+    wxFont font = attr->GetFont();
+    attr->DecRef();
 
 
-    return FALSE;
+    return font;
 }
 
 }
 
-
-bool wxGrid::MoveCursorLeft()
+void wxGrid::GetCellAlignment( int row, int col, int *horiz, int *vert ) const
 {
 {
-    if ( m_currentCellCoords != wxGridNoCellCoords  &&
-         m_currentCellCoords.GetCol() > 0 )
-    {
-        MakeCellVisible( m_currentCellCoords.GetRow(),
-                        m_currentCellCoords.GetCol() - 1 );
-
-        SetCurrentCell( m_currentCellCoords.GetRow(),
-                        m_currentCellCoords.GetCol() - 1 );
+    wxGridCellAttr *attr = GetCellAttr(row, col);
+    attr->GetAlignment(horiz, vert);
+    attr->DecRef();
+}
 
 
-        return TRUE;
-    }
+bool wxGrid::GetCellOverflow( int row, int col ) const
+{
+    wxGridCellAttr *attr = GetCellAttr(row, col);
+    bool allow = attr->GetOverflow();
+    attr->DecRef();
 
 
-    return FALSE;
+    return allow;
 }
 
 }
 
-
-bool wxGrid::MoveCursorRight()
+wxGrid::CellSpan
+wxGrid::GetCellSize( int row, int col, int *num_rows, int *num_cols ) const
 {
 {
-    if ( m_currentCellCoords != wxGridNoCellCoords  &&
-         m_currentCellCoords.GetCol() < m_numCols - 1 )
-    {
-        MakeCellVisible( m_currentCellCoords.GetRow(),
-                        m_currentCellCoords.GetCol() + 1 );
+    wxGridCellAttr *attr = GetCellAttr(row, col);
+    attr->GetSize( num_rows, num_cols );
+    attr->DecRef();
 
 
-        SetCurrentCell( m_currentCellCoords.GetRow(),
-                        m_currentCellCoords.GetCol() + 1 );
+    if ( *num_rows == 1 && *num_cols == 1 )
+        return CellSpan_None; // just a normal cell
 
 
-        return TRUE;
-    }
+    if ( *num_rows < 0 || *num_cols < 0 )
+        return CellSpan_Inside; // covered by a multi-span cell
 
 
-    return FALSE;
+    // this cell spans multiple cells to its right/bottom
+    return CellSpan_Main;
 }
 
 }
 
-
-bool wxGrid::MovePageUp()
+wxGridCellRenderer* wxGrid::GetCellRenderer(int row, int col) const
 {
 {
-    if ( m_currentCellCoords == wxGridNoCellCoords ) return FALSE;
+    wxGridCellAttr* attr = GetCellAttr(row, col);
+    wxGridCellRenderer* renderer = attr->GetRenderer(this, row, col);
+    attr->DecRef();
 
 
-    int row = m_currentCellCoords.GetRow();
-    if ( row > 0 )
-    {
-        int cw, ch;
-        m_gridWin->GetClientSize( &cw, &ch );
+    return renderer;
+}
 
 
-        int y = GetRowTop(row);
-        int newRow = YToRow( y - ch + 1 );
-        if ( newRow == -1 )
-        {
-            newRow = 0;
-        }
-        else if ( newRow == row )
-        {
-            newRow = row - 1;
-        }
+wxGridCellEditor* wxGrid::GetCellEditor(int row, int col) const
+{
+    wxGridCellAttr* attr = GetCellAttr(row, col);
+    wxGridCellEditor* editor = attr->GetEditor(this, row, col);
+    attr->DecRef();
 
 
-        MakeCellVisible( newRow, m_currentCellCoords.GetCol() );
-        SetCurrentCell( newRow, m_currentCellCoords.GetCol() );
+    return editor;
+}
 
 
-        return TRUE;
-    }
+bool wxGrid::IsReadOnly(int row, int col) const
+{
+    wxGridCellAttr* attr = GetCellAttr(row, col);
+    bool isReadOnly = attr->IsReadOnly();
+    attr->DecRef();
 
 
-    return FALSE;
+    return isReadOnly;
 }
 
 }
 
-bool wxGrid::MovePageDown()
-{
-    if ( m_currentCellCoords == wxGridNoCellCoords ) return FALSE;
+// ----------------------------------------------------------------------------
+// attribute support: cache, automatic provider creation, ...
+// ----------------------------------------------------------------------------
 
 
-    int row = m_currentCellCoords.GetRow();
-    if ( row < m_numRows )
+bool wxGrid::CanHaveAttributes() const
+{
+    if ( !m_table )
     {
     {
-        int cw, ch;
-        m_gridWin->GetClientSize( &cw, &ch );
-
-        int y = GetRowTop(row);
-        int newRow = YToRow( y + ch );
-        if ( newRow == -1 )
-        {
-            newRow = m_numRows - 1;
-        }
-        else if ( newRow == row )
-        {
-            newRow = row + 1;
-        }
+        return false;
+    }
 
 
-        MakeCellVisible( newRow, m_currentCellCoords.GetCol() );
-        SetCurrentCell( newRow, m_currentCellCoords.GetCol() );
+    return m_table->CanHaveAttributes();
+}
 
 
-        return TRUE;
+void wxGrid::ClearAttrCache()
+{
+    if ( m_attrCache.row != -1 )
+    {
+        wxGridCellAttr *oldAttr = m_attrCache.attr;
+        m_attrCache.attr = NULL;
+        m_attrCache.row = -1;
+        // wxSafeDecRec(...) might cause event processing that accesses
+        // the cached attribute, if one exists (e.g. by deleting the
+        // editor stored within the attribute). Therefore it is important
+        // to invalidate the cache  before calling wxSafeDecRef!
+        wxSafeDecRef(oldAttr);
     }
     }
-
-    return FALSE;
 }
 
 }
 
-bool wxGrid::MoveCursorUpBlock()
+void wxGrid::RefreshAttr(int row, int col)
 {
 {
-    if ( m_table &&
-         m_currentCellCoords != wxGridNoCellCoords  &&
-         m_currentCellCoords.GetRow() > 0 )
-    {
-        int row = m_currentCellCoords.GetRow();
-        int col = m_currentCellCoords.GetCol();
+    if ( m_attrCache.row == row && m_attrCache.col == col )
+        ClearAttrCache();
+}
 
 
-        if ( m_table->IsEmptyCell(row, col) )
-        {
-            // starting in an empty cell: find the next block of
-            // non-empty cells
-            //
-            while ( row > 0 )
-            {
-                row-- ;
-                if ( !(m_table->IsEmptyCell(row, col)) ) break;
-            }
-        }
-        else if ( m_table->IsEmptyCell(row-1, col) )
-        {
-            // starting at the top of a block: find the next block
-            //
-            row--;
-            while ( row > 0 )
-            {
-                row-- ;
-                if ( !(m_table->IsEmptyCell(row, col)) ) break;
-            }
-        }
-        else
-        {
-            // starting within a block: find the top of the block
-            //
-            while ( row > 0 )
-            {
-                row-- ;
-                if ( m_table->IsEmptyCell(row, col) )
-                {
-                    row++ ;
-                    break;
-                }
-            }
-        }
 
 
-        MakeCellVisible( row, col );
-        SetCurrentCell( row, col );
+void wxGrid::CacheAttr(int row, int col, wxGridCellAttr *attr) const
+{
+    if ( attr != NULL )
+    {
+        wxGrid * const self = const_cast<wxGrid *>(this);
 
 
-        return TRUE;
+        self->ClearAttrCache();
+        self->m_attrCache.row = row;
+        self->m_attrCache.col = col;
+        self->m_attrCache.attr = attr;
+        wxSafeIncRef(attr);
     }
     }
-
-    return FALSE;
 }
 
 }
 
-bool wxGrid::MoveCursorDownBlock()
+bool wxGrid::LookupAttr(int row, int col, wxGridCellAttr **attr) const
 {
 {
-    if ( m_table &&
-         m_currentCellCoords != wxGridNoCellCoords  &&
-         m_currentCellCoords.GetRow() < m_numRows-1 )
+    if ( row == m_attrCache.row && col == m_attrCache.col )
     {
     {
-        int row = m_currentCellCoords.GetRow();
-        int col = m_currentCellCoords.GetCol();
-
-        if ( m_table->IsEmptyCell(row, col) )
-        {
-            // starting in an empty cell: find the next block of
-            // non-empty cells
-            //
-            while ( row < m_numRows-1 )
-            {
-                row++ ;
-                if ( !(m_table->IsEmptyCell(row, col)) ) break;
-            }
-        }
-        else if ( m_table->IsEmptyCell(row+1, col) )
-        {
-            // starting at the bottom of a block: find the next block
-            //
-            row++;
-            while ( row < m_numRows-1 )
-            {
-                row++ ;
-                if ( !(m_table->IsEmptyCell(row, col)) ) break;
-            }
-        }
-        else
-        {
-            // starting within a block: find the bottom of the block
-            //
-            while ( row < m_numRows-1 )
-            {
-                row++ ;
-                if ( m_table->IsEmptyCell(row, col) )
-                {
-                    row-- ;
-                    break;
-                }
-            }
-        }
+        *attr = m_attrCache.attr;
+        wxSafeIncRef(m_attrCache.attr);
 
 
-        MakeCellVisible( row, col );
-        SetCurrentCell( row, col );
+#ifdef DEBUG_ATTR_CACHE
+        gs_nAttrCacheHits++;
+#endif
 
 
-        return TRUE;
+        return true;
     }
     }
+    else
+    {
+#ifdef DEBUG_ATTR_CACHE
+        gs_nAttrCacheMisses++;
+#endif
 
 
-    return FALSE;
+        return false;
+    }
 }
 
 }
 
-bool wxGrid::MoveCursorLeftBlock()
+wxGridCellAttr *wxGrid::GetCellAttr(int row, int col) const
 {
 {
-    if ( m_table &&
-         m_currentCellCoords != wxGridNoCellCoords  &&
-         m_currentCellCoords.GetCol() > 0 )
+    wxGridCellAttr *attr = NULL;
+    // Additional test to avoid looking at the cache e.g. for
+    // wxNoCellCoords, as this will confuse memory management.
+    if ( row >= 0 )
     {
     {
-        int row = m_currentCellCoords.GetRow();
-        int col = m_currentCellCoords.GetCol();
-
-        if ( m_table->IsEmptyCell(row, col) )
-        {
-            // starting in an empty cell: find the next block of
-            // non-empty cells
-            //
-            while ( col > 0 )
-            {
-                col-- ;
-                if ( !(m_table->IsEmptyCell(row, col)) ) break;
-            }
-        }
-        else if ( m_table->IsEmptyCell(row, col-1) )
-        {
-            // starting at the left of a block: find the next block
-            //
-            col--;
-            while ( col > 0 )
-            {
-                col-- ;
-                if ( !(m_table->IsEmptyCell(row, col)) ) break;
-            }
-        }
-        else
+        if ( !LookupAttr(row, col, &attr) )
         {
         {
-            // starting within a block: find the left of the block
-            //
-            while ( col > 0 )
-            {
-                col-- ;
-                if ( m_table->IsEmptyCell(row, col) )
-                {
-                    col++ ;
-                    break;
-                }
-            }
+            attr = m_table ? m_table->GetAttr(row, col, wxGridCellAttr::Any)
+                           : NULL;
+            CacheAttr(row, col, attr);
         }
         }
+    }
 
 
-        MakeCellVisible( row, col );
-        SetCurrentCell( row, col );
-
-        return TRUE;
+    if (attr)
+    {
+        attr->SetDefAttr(m_defaultCellAttr);
+    }
+    else
+    {
+        attr = m_defaultCellAttr;
+        attr->IncRef();
     }
 
     }
 
-    return FALSE;
+    return attr;
 }
 
 }
 
-bool wxGrid::MoveCursorRightBlock()
+wxGridCellAttr *wxGrid::GetOrCreateCellAttr(int row, int col) const
 {
 {
-    if ( m_table &&
-         m_currentCellCoords != wxGridNoCellCoords  &&
-         m_currentCellCoords.GetCol() < m_numCols-1 )
-    {
-        int row = m_currentCellCoords.GetRow();
-        int col = m_currentCellCoords.GetCol();
+    wxGridCellAttr *attr = NULL;
+    bool canHave = ((wxGrid*)this)->CanHaveAttributes();
 
 
-        if ( m_table->IsEmptyCell(row, col) )
-        {
-            // starting in an empty cell: find the next block of
-            // non-empty cells
-            //
-            while ( col < m_numCols-1 )
-            {
-                col++ ;
-                if ( !(m_table->IsEmptyCell(row, col)) ) break;
-            }
-        }
-        else if ( m_table->IsEmptyCell(row, col+1) )
-        {
-            // starting at the right of a block: find the next block
-            //
-            col++;
-            while ( col < m_numCols-1 )
-            {
-                col++ ;
-                if ( !(m_table->IsEmptyCell(row, col)) ) break;
-            }
-        }
-        else
-        {
-            // starting within a block: find the right of the block
-            //
-            while ( col < m_numCols-1 )
-            {
-                col++ ;
-                if ( m_table->IsEmptyCell(row, col) )
-                {
-                    col-- ;
-                    break;
-                }
-            }
-        }
+    wxCHECK_MSG( canHave, attr, wxT("Cell attributes not allowed"));
+    wxCHECK_MSG( m_table, attr, wxT("must have a table") );
 
 
-        MakeCellVisible( row, col );
-        SetCurrentCell( row, col );
+    attr = m_table->GetAttr(row, col, wxGridCellAttr::Cell);
+    if ( !attr )
+    {
+        attr = new wxGridCellAttr(m_defaultCellAttr);
 
 
-        return TRUE;
+        // artificially inc the ref count to match DecRef() in caller
+        attr->IncRef();
+        m_table->SetAttr(attr, row, col);
     }
 
     }
 
-    return FALSE;
+    return attr;
 }
 
 }
 
+// ----------------------------------------------------------------------------
+// setting column attributes (wrappers around SetColAttr)
+// ----------------------------------------------------------------------------
 
 
-
-//
-// ------ Label values and formatting
-//
-
-void wxGrid::GetRowLabelAlignment( int *horiz, int *vert )
+void wxGrid::SetColFormatBool(int col)
 {
 {
-    *horiz = m_rowLabelHorizAlign;
-    *vert  = m_rowLabelVertAlign;
+    SetColFormatCustom(col, wxGRID_VALUE_BOOL);
 }
 
 }
 
-void wxGrid::GetColLabelAlignment( int *horiz, int *vert )
+void wxGrid::SetColFormatNumber(int col)
 {
 {
-    *horiz = m_colLabelHorizAlign;
-    *vert  = m_colLabelVertAlign;
+    SetColFormatCustom(col, wxGRID_VALUE_NUMBER);
 }
 
 }
 
-wxString wxGrid::GetRowLabelValue( int row )
+void wxGrid::SetColFormatFloat(int col, int width, int precision)
 {
 {
-    if ( m_table )
-    {
-        return m_table->GetRowLabelValue( row );
-    }
-    else
+    wxString typeName = wxGRID_VALUE_FLOAT;
+    if ( (width != -1) || (precision != -1) )
     {
     {
-        wxString s;
-        s << row;
-        return s;
+        typeName << wxT(':') << width << wxT(',') << precision;
     }
     }
+
+    SetColFormatCustom(col, typeName);
 }
 
 }
 
-wxString wxGrid::GetColLabelValue( int col )
+void wxGrid::SetColFormatCustom(int col, const wxString& typeName)
 {
 {
-    if ( m_table )
+    wxGridCellAttr *attr = m_table->GetAttr(-1, col, wxGridCellAttr::Col );
+    if (!attr)
+        attr = new wxGridCellAttr;
+    wxGridCellRenderer *renderer = GetDefaultRendererForType(typeName);
+    attr->SetRenderer(renderer);
+    wxGridCellEditor *editor = GetDefaultEditorForType(typeName);
+    attr->SetEditor(editor);
+
+    SetColAttr(col, attr);
+
+}
+
+// ----------------------------------------------------------------------------
+// setting cell attributes: this is forwarded to the table
+// ----------------------------------------------------------------------------
+
+void wxGrid::SetAttr(int row, int col, wxGridCellAttr *attr)
+{
+    if ( CanHaveAttributes() )
     {
     {
-        return m_table->GetColLabelValue( col );
+        m_table->SetAttr(attr, row, col);
+        ClearAttrCache();
     }
     else
     {
     }
     else
     {
-        wxString s;
-        s << col;
-        return s;
+        wxSafeDecRef(attr);
     }
 }
 
     }
 }
 
-
-void wxGrid::SetRowLabelSize( int width )
+void wxGrid::SetRowAttr(int row, wxGridCellAttr *attr)
 {
 {
-    width = wxMax( width, 0 );
-    if ( width != m_rowLabelWidth )
+    if ( CanHaveAttributes() )
     {
     {
-        if ( width == 0 )
-        {
-            m_rowLabelWin->Show( FALSE );
-            m_cornerLabelWin->Show( FALSE );
-        }
-        else if ( m_rowLabelWidth == 0 )
-        {
-            m_rowLabelWin->Show( TRUE );
-            if ( m_colLabelHeight > 0 ) m_cornerLabelWin->Show( TRUE );
-        }
-
-        m_rowLabelWidth = width;
-        CalcWindowSizes();
-        Refresh( TRUE );
+        m_table->SetRowAttr(attr, row);
+        ClearAttrCache();
     }
     }
-}
-
-
-void wxGrid::SetColLabelSize( int height )
-{
-    height = wxMax( height, 0 );
-    if ( height != m_colLabelHeight )
+    else
     {
     {
-        if ( height == 0 )
-        {
-            m_colLabelWin->Show( FALSE );
-            m_cornerLabelWin->Show( FALSE );
-        }
-        else if ( m_colLabelHeight == 0 )
-        {
-            m_colLabelWin->Show( TRUE );
-            if ( m_rowLabelWidth > 0 ) m_cornerLabelWin->Show( TRUE );
-        }
-
-        m_colLabelHeight = height;
-        CalcWindowSizes();
-        Refresh( TRUE );
+        wxSafeDecRef(attr);
     }
 }
 
     }
 }
 
-
-void wxGrid::SetLabelBackgroundColour( const wxColour& colour )
+void wxGrid::SetColAttr(int col, wxGridCellAttr *attr)
 {
 {
-    if ( m_labelBackgroundColour != colour )
+    if ( CanHaveAttributes() )
     {
     {
-        m_labelBackgroundColour = colour;
-        m_rowLabelWin->SetBackgroundColour( colour );
-        m_colLabelWin->SetBackgroundColour( colour );
-        m_cornerLabelWin->SetBackgroundColour( colour );
-
-        if ( !GetBatchCount() )
-        {
-            m_rowLabelWin->Refresh();
-            m_colLabelWin->Refresh();
-            m_cornerLabelWin->Refresh();
-        }
+        m_table->SetColAttr(attr, col);
+        ClearAttrCache();
     }
     }
-}
-
-void wxGrid::SetLabelTextColour( const wxColour& colour )
-{
-    if ( m_labelTextColour != colour )
+    else
     {
     {
-        m_labelTextColour = colour;
-        if ( !GetBatchCount() )
-        {
-            m_rowLabelWin->Refresh();
-            m_colLabelWin->Refresh();
-        }
+        wxSafeDecRef(attr);
     }
 }
 
     }
 }
 
-void wxGrid::SetLabelFont( const wxFont& font )
+void wxGrid::SetCellBackgroundColour( int row, int col, const wxColour& colour )
 {
 {
-    m_labelFont = font;
-    if ( !GetBatchCount() )
+    if ( CanHaveAttributes() )
     {
     {
-        m_rowLabelWin->Refresh();
-        m_colLabelWin->Refresh();
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetBackgroundColour(colour);
+        attr->DecRef();
     }
 }
 
     }
 }
 
-void wxGrid::SetRowLabelAlignment( int horiz, int vert )
+void wxGrid::SetCellTextColour( int row, int col, const wxColour& colour )
 {
 {
-    if ( horiz == wxLEFT || horiz == wxCENTRE || horiz == wxRIGHT )
-    {
-        m_rowLabelHorizAlign = horiz;
-    }
-
-    if ( vert == wxTOP || vert == wxCENTRE || vert == wxBOTTOM )
+    if ( CanHaveAttributes() )
     {
     {
-        m_rowLabelVertAlign = vert;
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetTextColour(colour);
+        attr->DecRef();
     }
     }
+}
 
 
-    if ( !GetBatchCount() )
+void wxGrid::SetCellFont( int row, int col, const wxFont& font )
+{
+    if ( CanHaveAttributes() )
     {
     {
-        m_rowLabelWin->Refresh();
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetFont(font);
+        attr->DecRef();
     }
 }
 
     }
 }
 
-void wxGrid::SetColLabelAlignment( int horiz, int vert )
+void wxGrid::SetCellAlignment( int row, int col, int horiz, int vert )
 {
 {
-    if ( horiz == wxLEFT || horiz == wxCENTRE || horiz == wxRIGHT )
-    {
-        m_colLabelHorizAlign = horiz;
-    }
-
-    if ( vert == wxTOP || vert == wxCENTRE || vert == wxBOTTOM )
+    if ( CanHaveAttributes() )
     {
     {
-        m_colLabelVertAlign = vert;
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetAlignment(horiz, vert);
+        attr->DecRef();
     }
     }
+}
 
 
-    if ( !GetBatchCount() )
+void wxGrid::SetCellOverflow( int row, int col, bool allow )
+{
+    if ( CanHaveAttributes() )
     {
     {
-        m_colLabelWin->Refresh();
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetOverflow(allow);
+        attr->DecRef();
     }
 }
 
     }
 }
 
-void wxGrid::SetRowLabelValue( int row, const wxString& s )
+void wxGrid::SetCellSize( int row, int col, int num_rows, int num_cols )
 {
 {
-    if ( m_table )
+    if ( CanHaveAttributes() )
     {
     {
-        m_table->SetRowLabelValue( row, s );
-        if ( !GetBatchCount() )
+        int cell_rows, cell_cols;
+
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->GetSize(&cell_rows, &cell_cols);
+        attr->SetSize(num_rows, num_cols);
+        attr->DecRef();
+
+        // Cannot set the size of a cell to 0 or negative values
+        // While it is perfectly legal to do that, this function cannot
+        // handle all the possibilies, do it by hand by getting the CellAttr.
+        // You can only set the size of a cell to 1,1 or greater with this fn
+        wxASSERT_MSG( !((cell_rows < 1) || (cell_cols < 1)),
+                      wxT("wxGrid::SetCellSize setting cell size that is already part of another cell"));
+        wxASSERT_MSG( !((num_rows < 1) || (num_cols < 1)),
+                      wxT("wxGrid::SetCellSize setting cell size to < 1"));
+
+        // if this was already a multicell then "turn off" the other cells first
+        if ((cell_rows > 1) || (cell_cols > 1))
         {
         {
-            wxRect rect = CellToRect( row, 0);
-            if ( rect.height > 0 )
+            int i, j;
+            for (j=row; j < row + cell_rows; j++)
             {
             {
-                CalcScrolledPosition(0, rect.y, &rect.x, &rect.y);
-                rect.x = m_left;
-                rect.width = m_rowLabelWidth;
-                m_rowLabelWin->Refresh( TRUE, &rect );
+                for (i=col; i < col + cell_cols; i++)
+                {
+                    if ((i != col) || (j != row))
+                    {
+                        wxGridCellAttr *attr_stub = GetOrCreateCellAttr(j, i);
+                        attr_stub->SetSize( 1, 1 );
+                        attr_stub->DecRef();
+                    }
+                }
             }
         }
             }
         }
-    }
-}
 
 
-void wxGrid::SetColLabelValue( int col, const wxString& s )
-{
-    if ( m_table )
-    {
-        m_table->SetColLabelValue( col, s );
-        if ( !GetBatchCount() )
+        // mark the cells that will be covered by this cell to
+        // negative or zero values to point back at this cell
+        if (((num_rows > 1) || (num_cols > 1)) && (num_rows >= 1) && (num_cols >= 1))
         {
         {
-            wxRect rect = CellToRect( 0, col );
-            if ( rect.width > 0 )
+            int i, j;
+            for (j=row; j < row + num_rows; j++)
             {
             {
-                CalcScrolledPosition(rect.x, 0, &rect.x, &rect.y);
-                rect.y = m_top;
-                rect.height = m_colLabelHeight;
-                m_colLabelWin->Refresh( TRUE, &rect );
+                for (i=col; i < col + num_cols; i++)
+                {
+                    if ((i != col) || (j != row))
+                    {
+                        wxGridCellAttr *attr_stub = GetOrCreateCellAttr(j, i);
+                        attr_stub->SetSize( row - j, col - i );
+                        attr_stub->DecRef();
+                    }
+                }
             }
         }
     }
 }
 
             }
         }
     }
 }
 
-void wxGrid::SetGridLineColour( const wxColour& colour )
+void wxGrid::SetCellRenderer(int row, int col, wxGridCellRenderer *renderer)
 {
 {
-    if ( m_gridLineColour != colour )
+    if ( CanHaveAttributes() )
     {
     {
-        m_gridLineColour = colour;
-
-        wxClientDC dc( m_gridWin );
-        PrepareDC( dc );
-        DrawAllGridLines( dc, wxRegion() );
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetRenderer(renderer);
+        attr->DecRef();
     }
 }
 
     }
 }
 
-void wxGrid::EnableGridLines( bool enable )
+void wxGrid::SetCellEditor(int row, int col, wxGridCellEditor* editor)
 {
 {
-    if ( enable != m_gridLinesEnabled )
+    if ( CanHaveAttributes() )
     {
     {
-        m_gridLinesEnabled = enable;
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetEditor(editor);
+        attr->DecRef();
+    }
+}
 
 
-        if ( !GetBatchCount() )
-        {
-            if ( enable )
-            {
-                wxClientDC dc( m_gridWin );
-                PrepareDC( dc );
-                DrawAllGridLines( dc, wxRegion() );
-            }
-            else
-            {
-                m_gridWin->Refresh();
-            }
-        }
+void wxGrid::SetReadOnly(int row, int col, bool isReadOnly)
+{
+    if ( CanHaveAttributes() )
+    {
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetReadOnly(isReadOnly);
+        attr->DecRef();
     }
 }
 
     }
 }
 
+// ----------------------------------------------------------------------------
+// Data type registration
+// ----------------------------------------------------------------------------
 
 
-int wxGrid::GetDefaultRowSize()
+void wxGrid::RegisterDataType(const wxString& typeName,
+                              wxGridCellRenderer* renderer,
+                              wxGridCellEditor* editor)
 {
 {
-    return m_defaultRowHeight;
+    m_typeRegistry->RegisterDataType(typeName, renderer, editor);
 }
 
 }
 
-int wxGrid::GetRowSize( int row )
-{
-    wxCHECK_MSG( row >= 0 && row < m_numRows, 0, _T("invalid row index") );
 
 
-    return GetRowHeight(row);
+wxGridCellEditor * wxGrid::GetDefaultEditorForCell(int row, int col) const
+{
+    wxString typeName = m_table->GetTypeName(row, col);
+    return GetDefaultEditorForType(typeName);
 }
 
 }
 
-int wxGrid::GetDefaultColSize()
+wxGridCellRenderer * wxGrid::GetDefaultRendererForCell(int row, int col) const
 {
 {
-    return m_defaultColWidth;
+    wxString typeName = m_table->GetTypeName(row, col);
+    return GetDefaultRendererForType(typeName);
 }
 
 }
 
-int wxGrid::GetColSize( int col )
+wxGridCellEditor * wxGrid::GetDefaultEditorForType(const wxString& typeName) const
 {
 {
-    wxCHECK_MSG( col >= 0 && col < m_numCols, 0, _T("invalid column index") );
+    int index = m_typeRegistry->FindOrCloneDataType(typeName);
+    if ( index == wxNOT_FOUND )
+    {
+        wxFAIL_MSG(wxString::Format(wxT("Unknown data type name [%s]"), typeName.c_str()));
 
 
-    return GetColWidth(col);
+        return NULL;
+    }
+
+    return m_typeRegistry->GetEditor(index);
 }
 
 }
 
-// ============================================================================
-// access to the grid attributes: each of them has a default value in the grid
-// itself and may be overidden on a per-cell basis
-// ============================================================================
+wxGridCellRenderer * wxGrid::GetDefaultRendererForType(const wxString& typeName) const
+{
+    int index = m_typeRegistry->FindOrCloneDataType(typeName);
+    if ( index == wxNOT_FOUND )
+    {
+        wxFAIL_MSG(wxString::Format(wxT("Unknown data type name [%s]"), typeName.c_str()));
+
+        return NULL;
+    }
+
+    return m_typeRegistry->GetRenderer(index);
+}
 
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
-// setting default attributes
+// row/col size
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 
-void wxGrid::SetDefaultCellBackgroundColour( const wxColour& col )
+void wxGrid::DoDisableLineResize(int line, wxGridFixedIndicesSet *& setFixed)
 {
 {
-    m_defaultCellAttr->SetBackgroundColour(col);
-#ifdef __WXGTK__
-    m_gridWin->SetBackgroundColour(col);
-#endif
+    if ( !setFixed )
+    {
+        setFixed = new wxGridFixedIndicesSet;
+    }
+
+    setFixed->insert(line);
 }
 
 }
 
-void wxGrid::SetDefaultCellTextColour( const wxColour& col )
+bool
+wxGrid::DoCanResizeLine(int line, const wxGridFixedIndicesSet *setFixed) const
 {
 {
-    m_defaultCellAttr->SetTextColour(col);
+    return !setFixed || !setFixed->count(line);
 }
 
 }
 
-void wxGrid::SetDefaultCellAlignment( int horiz, int vert )
+void wxGrid::EnableDragRowSize( bool enable )
 {
 {
-    m_defaultCellAttr->SetAlignment(horiz, vert);
+    m_canDragRowSize = enable;
 }
 
 }
 
-void wxGrid::SetDefaultCellFont( const wxFont& font )
+void wxGrid::EnableDragColSize( bool enable )
 {
 {
-    m_defaultCellAttr->SetFont(font);
+    m_canDragColSize = enable;
 }
 
 }
 
-void wxGrid::SetDefaultRenderer(wxGridCellRenderer *renderer)
+void wxGrid::EnableDragGridSize( bool enable )
 {
 {
-    m_defaultCellAttr->SetRenderer(renderer);
+    m_canDragGridSize = enable;
 }
 
 }
 
-void wxGrid::SetDefaultEditor(wxGridCellEditor *editor)
+void wxGrid::EnableDragCell( bool enable )
 {
 {
-    m_defaultCellAttr->SetEditor(editor);
+    m_canDragCell = enable;
 }
 
 }
 
-// ----------------------------------------------------------------------------
-// access to the default attrbiutes
-// ----------------------------------------------------------------------------
-
-wxColour wxGrid::GetDefaultCellBackgroundColour()
+void wxGrid::SetDefaultRowSize( int height, bool resizeExistingRows )
 {
 {
-    return m_defaultCellAttr->GetBackgroundColour();
+    m_defaultRowHeight = wxMax( height, m_minAcceptableRowHeight );
+
+    if ( resizeExistingRows )
+    {
+        // since we are resizing all rows to the default row size,
+        // we can simply clear the row heights and row bottoms
+        // arrays (which also allows us to take advantage of
+        // some speed optimisations)
+        m_rowHeights.Empty();
+        m_rowBottoms.Empty();
+        if ( !GetBatchCount() )
+            CalcDimensions();
+    }
 }
 
 }
 
-wxColour wxGrid::GetDefaultCellTextColour()
+namespace
 {
 {
-    return m_defaultCellAttr->GetTextColour();
-}
 
 
-wxFont wxGrid::GetDefaultCellFont()
+// This is a common part of SetRowSize() and SetColSize() which takes care of
+// updating the height/width of a row/column depending on its current value and
+// the new one.
+//
+// Returns the difference between the new and the old size.
+int UpdateRowOrColSize(int& sizeCurrent, int sizeNew)
 {
 {
-    return m_defaultCellAttr->GetFont();
+    // On input here sizeCurrent can be negative if it's currently hidden (the
+    // real size is its absolute value then). And sizeNew can be 0 to indicate
+    // that the row/column should be hidden or -1 to indicate that it should be
+    // shown again.
+
+    if ( sizeNew < 0 )
+    {
+        // We're showing back a previously hidden row/column.
+        wxASSERT_MSG( sizeNew == -1, wxS("New size must be positive or -1.") );
+
+        // If it's already visible, simply do nothing.
+        if ( sizeCurrent >= 0 )
+            return 0;
+
+        // Otherwise show it by restoring its old size.
+        sizeCurrent = -sizeCurrent;
+
+        // This is positive which is correct.
+        return sizeCurrent;
+    }
+    else if ( sizeNew == 0 )
+    {
+        // We're hiding a row/column.
+
+        // If it's already hidden, simply do nothing.
+        if ( sizeCurrent <= 0 )
+            return 0;
+
+        // Otherwise hide it and also remember the shown size to be able to
+        // restore it later.
+        sizeCurrent = -sizeCurrent;
+
+        // This is negative which is correct.
+        return sizeCurrent;
+    }
+    else // We're just changing the row/column size.
+    {
+        // Here it could have been hidden or not previously.
+        const int sizeOld = sizeCurrent < 0 ? 0 : sizeCurrent;
+
+        sizeCurrent = sizeNew;
+
+        return sizeCurrent - sizeOld;
+    }
 }
 
 }
 
-void wxGrid::GetDefaultCellAlignment( int *horiz, int *vert )
+} // anonymous namespace
+
+void wxGrid::SetRowSize( int row, int height )
 {
 {
-    m_defaultCellAttr->GetAlignment(horiz, vert);
+    // See comment in SetColSize
+    if ( height > 0 && height < GetRowMinimalAcceptableHeight())
+        return;
+
+    // The value of -1 is special and means to fit the height to the row label.
+    // As with the columns, ignore attempts to auto-size the hidden rows.
+    if ( height == -1 && GetRowHeight(row) != 0 )
+    {
+        long w, h;
+        wxArrayString lines;
+        wxClientDC dc(m_rowLabelWin);
+        dc.SetFont(GetLabelFont());
+        StringToLines(GetRowLabelValue( row ), lines);
+        GetTextBoxSize( dc, lines, &w, &h );
+        //check that it is not less than the minimal height
+        height = wxMax(h, GetRowMinimalAcceptableHeight());
+    }
+
+    DoSetRowSize(row, height);
 }
 
 }
 
-wxGridCellRenderer *wxGrid::GetDefaultRenderer() const
+void wxGrid::DoSetRowSize( int row, int height )
 {
 {
-    return m_defaultCellAttr->GetRenderer(NULL, 0, 0);
+    wxCHECK_RET( row >= 0 && row < m_numRows, wxT("invalid row index") );
+
+    if ( m_rowHeights.IsEmpty() )
+    {
+        // need to really create the array
+        InitRowHeights();
+    }
+
+    const int diff = UpdateRowOrColSize(m_rowHeights[row], height);
+    if ( !diff )
+        return;
+
+    for ( int i = row; i < m_numRows; i++ )
+    {
+        m_rowBottoms[i] += diff;
+    }
+
+    InvalidateBestSize();
+
+    if ( !GetBatchCount() )
+    {
+        CalcDimensions();
+        Refresh();
+    }
 }
 
 }
 
-wxGridCellEditor *wxGrid::GetDefaultEditor() const
+void wxGrid::SetDefaultColSize( int width, bool resizeExistingCols )
 {
 {
-    return m_defaultCellAttr->GetEditor(NULL,0,0);
-}
+    // we dont allow zero default column width
+    m_defaultColWidth = wxMax( wxMax( width, m_minAcceptableColWidth ), 1 );
 
 
-// ----------------------------------------------------------------------------
-// access to cell attributes
-// ----------------------------------------------------------------------------
+    if ( resizeExistingCols )
+    {
+        // since we are resizing all columns to the default column size,
+        // we can simply clear the col widths and col rights
+        // arrays (which also allows us to take advantage of
+        // some speed optimisations)
+        m_colWidths.Empty();
+        m_colRights.Empty();
+        if ( !GetBatchCount() )
+            CalcDimensions();
+    }
+}
 
 
-wxColour wxGrid::GetCellBackgroundColour(int row, int col)
+void wxGrid::SetColSize( int col, int width )
 {
 {
-    wxGridCellAttr *attr = GetCellAttr(row, col);
-    wxColour colour = attr->GetBackgroundColour();
-    attr->DecRef();
-    return colour;
+    // we intentionally don't test whether the width is less than
+    // GetColMinimalWidth() here but we do compare it with
+    // GetColMinimalAcceptableWidth() as otherwise things currently break (see
+    // #651) -- and we also always allow the width of 0 as it has the special
+    // sense of hiding the column
+    if ( width > 0 && width < GetColMinimalAcceptableWidth() )
+        return;
+
+    // The value of -1 is special and means to fit the width to the column label.
+    //
+    // Notice that we currently don't support auto-sizing hidden columns (we
+    // could, but it's not clear whether this is really needed and it would
+    // make the code more complex), and for them passing -1 simply means to
+    // show the column back using its old size.
+    if ( width == -1 && GetColWidth(col) != 0 )
+    {
+        long w, h;
+        wxArrayString lines;
+        wxClientDC dc(m_colWindow);
+        dc.SetFont(GetLabelFont());
+        StringToLines(GetColLabelValue(col), lines);
+        if ( GetColLabelTextOrientation() == wxHORIZONTAL )
+            GetTextBoxSize( dc, lines, &w, &h );
+        else
+            GetTextBoxSize( dc, lines, &h, &w );
+        width = w + 6;
+        //check that it is not less than the minimal width
+        width = wxMax(width, GetColMinimalAcceptableWidth());
+    }
+
+    DoSetColSize(col, width);
 }
 
 }
 
-wxColour wxGrid::GetCellTextColour( int row, int col )
+void wxGrid::DoSetColSize( int col, int width )
 {
 {
-    wxGridCellAttr *attr = GetCellAttr(row, col);
-    wxColour colour = attr->GetTextColour();
-    attr->DecRef();
-    return colour;
+    wxCHECK_RET( col >= 0 && col < m_numCols, wxT("invalid column index") );
+
+    if ( m_colWidths.IsEmpty() )
+    {
+        // need to really create the array
+        InitColWidths();
+    }
+
+    const int diff = UpdateRowOrColSize(m_colWidths[col], width);
+    if ( !diff )
+        return;
+
+    if ( m_useNativeHeader )
+        GetGridColHeader()->UpdateColumn(col);
+    //else: will be refreshed when the header is redrawn
+
+    for ( int colPos = GetColPos(col); colPos < m_numCols; colPos++ )
+    {
+        m_colRights[GetColAt(colPos)] += diff;
+    }
+
+    InvalidateBestSize();
+
+    if ( !GetBatchCount() )
+    {
+        CalcDimensions();
+        Refresh();
+    }
 }
 
 }
 
-wxFont wxGrid::GetCellFont( int row, int col )
+void wxGrid::SetColMinimalWidth( int col, int width )
 {
 {
-    wxGridCellAttr *attr = GetCellAttr(row, col);
-    wxFont font = attr->GetFont();
-    attr->DecRef();
-    return font;
+    if (width > GetColMinimalAcceptableWidth())
+    {
+        wxLongToLongHashMap::key_type key = (wxLongToLongHashMap::key_type)col;
+        m_colMinWidths[key] = width;
+    }
 }
 
 }
 
-void wxGrid::GetCellAlignment( int row, int col, int *horiz, int *vert )
+void wxGrid::SetRowMinimalHeight( int row, int width )
 {
 {
-    wxGridCellAttr *attr = GetCellAttr(row, col);
-    attr->GetAlignment(horiz, vert);
-    attr->DecRef();
+    if (width > GetRowMinimalAcceptableHeight())
+    {
+        wxLongToLongHashMap::key_type key = (wxLongToLongHashMap::key_type)row;
+        m_rowMinHeights[key] = width;
+    }
 }
 
 }
 
-wxGridCellRenderer* wxGrid::GetCellRenderer(int row, int col)
+int wxGrid::GetColMinimalWidth(int col) const
 {
 {
-    wxGridCellAttr* attr = GetCellAttr(row, col);
-    wxGridCellRenderer* renderer = attr->GetRenderer(this, row, col);
-    attr->DecRef();
+    wxLongToLongHashMap::key_type key = (wxLongToLongHashMap::key_type)col;
+    wxLongToLongHashMap::const_iterator it = m_colMinWidths.find(key);
 
 
-    return renderer;
+    return it != m_colMinWidths.end() ? (int)it->second : m_minAcceptableColWidth;
 }
 
 }
 
-wxGridCellEditor* wxGrid::GetCellEditor(int row, int col)
+int wxGrid::GetRowMinimalHeight(int row) const
 {
 {
-    wxGridCellAttr* attr = GetCellAttr(row, col);
-    wxGridCellEditor* editor = attr->GetEditor(this, row, col);
-    attr->DecRef();
+    wxLongToLongHashMap::key_type key = (wxLongToLongHashMap::key_type)row;
+    wxLongToLongHashMap::const_iterator it = m_rowMinHeights.find(key);
 
 
-    return editor;
+    return it != m_rowMinHeights.end() ? (int)it->second : m_minAcceptableRowHeight;
 }
 
 }
 
-bool wxGrid::IsReadOnly(int row, int col) const
+void wxGrid::SetColMinimalAcceptableWidth( int width )
 {
 {
-    wxGridCellAttr* attr = GetCellAttr(row, col);
-    bool isReadOnly = attr->IsReadOnly();
-    attr->DecRef();
-    return isReadOnly;
+    // We do allow a width of 0 since this gives us
+    // an easy way to temporarily hiding columns.
+    if ( width >= 0 )
+        m_minAcceptableColWidth = width;
 }
 
 }
 
-// ----------------------------------------------------------------------------
-// attribute support: cache, automatic provider creation, ...
-// ----------------------------------------------------------------------------
-
-bool wxGrid::CanHaveAttributes()
+void wxGrid::SetRowMinimalAcceptableHeight( int height )
 {
 {
-    if ( !m_table )
-    {
-        return FALSE;
-    }
-
-    return m_table->CanHaveAttributes();
+    // We do allow a height of 0 since this gives us
+    // an easy way to temporarily hiding rows.
+    if ( height >= 0 )
+        m_minAcceptableRowHeight = height;
 }
 
 }
 
-void wxGrid::ClearAttrCache()
+int  wxGrid::GetColMinimalAcceptableWidth() const
 {
 {
-    if ( m_attrCache.row != -1 )
-    {
-        wxSafeDecRef(m_attrCache.attr);
-        m_attrCache.row = -1;
-    }
+    return m_minAcceptableColWidth;
 }
 
 }
 
-void wxGrid::CacheAttr(int row, int col, wxGridCellAttr *attr) const
+int  wxGrid::GetRowMinimalAcceptableHeight() const
 {
 {
-    wxGrid *self = (wxGrid *)this;  // const_cast
-
-    self->ClearAttrCache();
-    self->m_attrCache.row = row;
-    self->m_attrCache.col = col;
-    self->m_attrCache.attr = attr;
-    wxSafeIncRef(attr);
+    return m_minAcceptableRowHeight;
 }
 
 }
 
-bool wxGrid::LookupAttr(int row, int col, wxGridCellAttr **attr) const
-{
-    if ( row == m_attrCache.row && col == m_attrCache.col )
-    {
-        *attr = m_attrCache.attr;
-        wxSafeIncRef(m_attrCache.attr);
+// ----------------------------------------------------------------------------
+// auto sizing
+// ----------------------------------------------------------------------------
 
 
-#ifdef DEBUG_ATTR_CACHE
-        gs_nAttrCacheHits++;
-#endif
+void
+wxGrid::AutoSizeColOrRow(int colOrRow, bool setAsMin, wxGridDirection direction)
+{
+    const bool column = direction == wxGRID_COLUMN;
 
 
-        return TRUE;
+    // We don't support auto-sizing hidden rows or columns, this doesn't seem
+    // to make much sense.
+    if ( column )
+    {
+        if ( GetColWidth(colOrRow) == 0 )
+            return;
     }
     else
     {
     }
     else
     {
-#ifdef DEBUG_ATTR_CACHE
-        gs_nAttrCacheMisses++;
-#endif
-        return FALSE;
+        if ( GetRowHeight(colOrRow) == 0 )
+            return;
     }
     }
-}
 
 
-wxGridCellAttr *wxGrid::GetCellAttr(int row, int col) const
-{
-    wxGridCellAttr *attr;
-    if ( !LookupAttr(row, col, &attr) )
-    {
-        attr = m_table ? m_table->GetAttr(row, col) : (wxGridCellAttr *)NULL;
-        CacheAttr(row, col, attr);
-    }
-    if (attr)
+    wxClientDC dc(m_gridWin);
+
+    // cancel editing of cell
+    HideCellEditControl();
+    SaveEditControlValue();
+
+    // initialize both of them just to avoid compiler warnings even if only
+    // really needs to be initialized here
+    int row,
+        col;
+    if ( column )
     {
     {
-        attr->SetDefAttr(m_defaultCellAttr);
+        row = -1;
+        col = colOrRow;
     }
     else
     {
     }
     else
     {
-        attr = m_defaultCellAttr;
-        attr->IncRef();
+        row = colOrRow;
+        col = -1;
     }
 
     }
 
-    return attr;
-}
-
-wxGridCellAttr *wxGrid::GetOrCreateCellAttr(int row, int col) const
-{
-    wxGridCellAttr *attr;
-    if ( !LookupAttr(row, col, &attr) || !attr )
+    wxCoord extent, extentMax = 0;
+    int max = column ? m_numRows : m_numCols;
+    for ( int rowOrCol = 0; rowOrCol < max; rowOrCol++ )
     {
     {
-        wxASSERT_MSG( m_table,
-                      _T("we may only be called if CanHaveAttributes() "
-                         "returned TRUE and then m_table should be !NULL") );
-
-        attr = m_table->GetAttr(row, col);
-        if ( !attr )
+        if ( column )
+        {
+            row = rowOrCol;
+            col = colOrRow;
+        }
+        else
         {
         {
-            attr = new wxGridCellAttr;
+            row = colOrRow;
+            col = rowOrCol;
+        }
 
 
-            // artificially inc the ref count to match DecRef() in caller
-            attr->IncRef();
+        // we need to account for the cells spanning multiple columns/rows:
+        // while they may need a lot of space, they don't need all of it in
+        // this column/row
+        int numRows, numCols;
+        const CellSpan span = GetCellSize(row, col, &numRows, &numCols);
+        if ( span == CellSpan_Inside )
+        {
+            // we need to get the size of the main cell, not of a cell hidden
+            // by it
+            row += numRows;
+            col += numCols;
 
 
-            m_table->SetAttr(attr, row, col);
+            // get the size of the main cell too
+            GetCellSize(row, col, &numRows, &numCols);
         }
 
         }
 
-        CacheAttr(row, col, attr);
-    }
-    attr->SetDefAttr(m_defaultCellAttr);
-    return attr;
-}
+        // get cell ( main cell if CellSpan_Inside ) renderer best size
+        wxGridCellAttr *attr = GetCellAttr(row, col);
+        wxGridCellRenderer *renderer = attr->GetRenderer(this, row, col);
+        if ( renderer )
+        {
+            wxSize size = renderer->GetBestSize(*this, *attr, dc, row, col);
+            extent = column ? size.x : size.y;
 
 
-// ----------------------------------------------------------------------------
-// setting column attributes (wrappers around SetColAttr)
-// ----------------------------------------------------------------------------
+            if ( span != CellSpan_None )
+            {
+                // we spread the size of a spanning cell over all the cells it
+                // covers evenly -- this is probably not ideal but we can't
+                // really do much better here
+                //
+                // notice that numCols and numRows are never 0 as they
+                // correspond to the size of the main cell of the span and not
+                // of the cell inside it
+                extent /= column ? numCols : numRows;
+            }
 
 
-void wxGrid::SetColFormatBool(int col)
-{
-    SetColFormatCustom(col, wxGRID_VALUE_BOOL);
-}
+            if ( extent > extentMax )
+                extentMax = extent;
 
 
-void wxGrid::SetColFormatNumber(int col)
-{
-    SetColFormatCustom(col, wxGRID_VALUE_NUMBER);
-}
+            renderer->DecRef();
+        }
 
 
-void wxGrid::SetColFormatFloat(int col, int width, int precision)
-{
-    wxString typeName = wxGRID_VALUE_FLOAT;
-    if ( (width != -1) || (precision != -1) )
-    {
-        typeName << _T(':') << width << _T(',') << precision;
+        attr->DecRef();
     }
 
     }
 
-    SetColFormatCustom(col, typeName);
-}
-
-void wxGrid::SetColFormatCustom(int col, const wxString& typeName)
-{
-    wxGridCellAttr *attr = new wxGridCellAttr;
-    wxGridCellRenderer *renderer = GetDefaultRendererForType(typeName);
-    attr->SetRenderer(renderer);
+    // now also compare with the column label extent
+    wxCoord w, h;
+    dc.SetFont( GetLabelFont() );
 
 
-    SetColAttr(col, attr);
-}
+    if ( column )
+    {
+        dc.GetMultiLineTextExtent( GetColLabelValue(colOrRow), &w, &h );
+        if ( GetColLabelTextOrientation() == wxVERTICAL )
+            w = h;
+    }
+    else
+        dc.GetMultiLineTextExtent( GetRowLabelValue(colOrRow), &w, &h );
 
 
-// ----------------------------------------------------------------------------
-// setting cell attributes: this is forwarded to the table
-// ----------------------------------------------------------------------------
+    extent = column ? w : h;
+    if ( extent > extentMax )
+        extentMax = extent;
 
 
-void wxGrid::SetRowAttr(int row, wxGridCellAttr *attr)
-{
-    if ( CanHaveAttributes() )
+    if ( !extentMax )
     {
     {
-        m_table->SetRowAttr(attr, row);
+        // empty column - give default extent (notice that if extentMax is less
+        // than default extent but != 0, it's OK)
+        extentMax = column ? m_defaultColWidth : m_defaultRowHeight;
     }
     else
     {
     }
     else
     {
-        wxSafeDecRef(attr);
+        if ( column )
+            // leave some space around text
+            extentMax += 10;
+        else
+            extentMax += 6;
     }
     }
-}
 
 
-void wxGrid::SetColAttr(int col, wxGridCellAttr *attr)
-{
-    if ( CanHaveAttributes() )
+    if ( column )
     {
     {
-        m_table->SetColAttr(attr, col);
+        // Ensure automatic width is not less than minimal width. See the
+        // comment in SetColSize() for explanation of why this isn't done
+        // in SetColSize().
+        if ( !setAsMin )
+            extentMax = wxMax(extentMax, GetColMinimalWidth(colOrRow));
+
+        SetColSize( colOrRow, extentMax );
+        if ( !GetBatchCount() )
+        {
+            if ( m_useNativeHeader )
+            {
+                GetGridColHeader()->UpdateColumn(colOrRow);
+            }
+            else
+            {
+                int cw, ch, dummy;
+                m_gridWin->GetClientSize( &cw, &ch );
+                wxRect rect ( CellToRect( 0, colOrRow ) );
+                rect.y = 0;
+                CalcScrolledPosition(rect.x, 0, &rect.x, &dummy);
+                rect.width = cw - rect.x;
+                rect.height = m_colLabelHeight;
+                GetColLabelWindow()->Refresh( true, &rect );
+            }
+        }
     }
     else
     {
     }
     else
     {
-        wxSafeDecRef(attr);
+        // Ensure automatic width is not less than minimal height. See the
+        // comment in SetColSize() for explanation of why this isn't done
+        // in SetRowSize().
+        if ( !setAsMin )
+            extentMax = wxMax(extentMax, GetRowMinimalHeight(colOrRow));
+
+        SetRowSize(colOrRow, extentMax);
+        if ( !GetBatchCount() )
+        {
+            int cw, ch, dummy;
+            m_gridWin->GetClientSize( &cw, &ch );
+            wxRect rect( CellToRect( colOrRow, 0 ) );
+            rect.x = 0;
+            CalcScrolledPosition(0, rect.y, &dummy, &rect.y);
+            rect.width = m_rowLabelWidth;
+            rect.height = ch - rect.y;
+            m_rowLabelWin->Refresh( true, &rect );
+        }
     }
     }
-}
 
 
-void wxGrid::SetCellBackgroundColour( int row, int col, const wxColour& colour )
-{
-    if ( CanHaveAttributes() )
+    if ( setAsMin )
     {
     {
-        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
-        attr->SetBackgroundColour(colour);
-        attr->DecRef();
+        if ( column )
+            SetColMinimalWidth(colOrRow, extentMax);
+        else
+            SetRowMinimalHeight(colOrRow, extentMax);
     }
 }
 
     }
 }
 
-void wxGrid::SetCellTextColour( int row, int col, const wxColour& colour )
+wxCoord wxGrid::CalcColOrRowLabelAreaMinSize(wxGridDirection direction)
 {
 {
-    if ( CanHaveAttributes() )
+    // calculate size for the rows or columns?
+    const bool calcRows = direction == wxGRID_ROW;
+
+    wxClientDC dc(calcRows ? GetGridRowLabelWindow()
+                           : GetGridColLabelWindow());
+    dc.SetFont(GetLabelFont());
+
+    // which dimension should we take into account for calculations?
+    //
+    // for columns, the text can be only horizontal so it's easy but for rows
+    // we also have to take into account the text orientation
+    const bool
+        useWidth = calcRows || (GetColLabelTextOrientation() == wxVERTICAL);
+
+    wxArrayString lines;
+    wxCoord extentMax = 0;
+
+    const int numRowsOrCols = calcRows ? m_numRows : m_numCols;
+    for ( int rowOrCol = 0; rowOrCol < numRowsOrCols; rowOrCol++ )
     {
     {
-        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
-        attr->SetTextColour(colour);
-        attr->DecRef();
+        lines.Clear();
+
+        wxString label = calcRows ? GetRowLabelValue(rowOrCol)
+                                  : GetColLabelValue(rowOrCol);
+        StringToLines(label, lines);
+
+        long w, h;
+        GetTextBoxSize(dc, lines, &w, &h);
+
+        const wxCoord extent = useWidth ? w : h;
+        if ( extent > extentMax )
+            extentMax = extent;
     }
     }
-}
 
 
-void wxGrid::SetCellFont( int row, int col, const wxFont& font )
-{
-    if ( CanHaveAttributes() )
+    if ( !extentMax )
     {
     {
-        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
-        attr->SetFont(font);
-        attr->DecRef();
+        // empty column - give default extent (notice that if extentMax is less
+        // than default extent but != 0, it's OK)
+        extentMax = calcRows ? GetDefaultRowLabelSize()
+                             : GetDefaultColLabelSize();
     }
     }
+
+    // leave some space around text (taken from AutoSizeColOrRow)
+    if ( calcRows )
+        extentMax += 10;
+    else
+        extentMax += 6;
+
+    return extentMax;
 }
 
 }
 
-void wxGrid::SetCellAlignment( int row, int col, int horiz, int vert )
+int wxGrid::SetOrCalcColumnSizes(bool calcOnly, bool setAsMin)
 {
 {
-    if ( CanHaveAttributes() )
+    int width = m_rowLabelWidth;
+
+    wxGridUpdateLocker locker;
+    if(!calcOnly)
+        locker.Create(this);
+
+    for ( int col = 0; col < m_numCols; col++ )
     {
     {
-        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
-        attr->SetAlignment(horiz, vert);
-        attr->DecRef();
+        if ( !calcOnly )
+            AutoSizeColumn(col, setAsMin);
+
+        width += GetColWidth(col);
     }
     }
+
+    return width;
 }
 
 }
 
-void wxGrid::SetCellRenderer(int row, int col, wxGridCellRenderer *renderer)
+int wxGrid::SetOrCalcRowSizes(bool calcOnly, bool setAsMin)
 {
 {
-    if ( CanHaveAttributes() )
+    int height = m_colLabelHeight;
+
+    wxGridUpdateLocker locker;
+    if(!calcOnly)
+        locker.Create(this);
+
+    for ( int row = 0; row < m_numRows; row++ )
     {
     {
-        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
-        attr->SetRenderer(renderer);
-        attr->DecRef();
+        if ( !calcOnly )
+            AutoSizeRow(row, setAsMin);
+
+        height += GetRowHeight(row);
     }
     }
+
+    return height;
+}
+
+void wxGrid::AutoSize()
+{
+    wxGridUpdateLocker locker(this);
+
+    wxSize size(SetOrCalcColumnSizes(false) - m_rowLabelWidth + m_extraWidth,
+                SetOrCalcRowSizes(false) - m_colLabelHeight + m_extraHeight);
+
+    // we know that we're not going to have scrollbars so disable them now to
+    // avoid trouble in SetClientSize() which can otherwise set the correct
+    // client size but also leave space for (not needed any more) scrollbars
+    SetScrollbars(m_xScrollPixelsPerLine, m_yScrollPixelsPerLine,
+                  0, 0, 0, 0, true);
+
+    SetClientSize(size.x + m_rowLabelWidth, size.y + m_colLabelHeight);
 }
 
 }
 
-void wxGrid::SetCellEditor(int row, int col, wxGridCellEditor* editor)
+void wxGrid::AutoSizeRowLabelSize( int row )
 {
 {
-    if ( CanHaveAttributes() )
+    // Hide the edit control, so it
+    // won't interfere with drag-shrinking.
+    if ( IsCellEditControlShown() )
     {
     {
-        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
-        attr->SetEditor(editor);
-        attr->DecRef();
+        HideCellEditControl();
+        SaveEditControlValue();
     }
     }
+
+    // autosize row height depending on label text
+    SetRowSize(row, -1);
+
+    ForceRefresh();
 }
 
 }
 
-void wxGrid::SetReadOnly(int row, int col, bool isReadOnly)
+void wxGrid::AutoSizeColLabelSize( int col )
 {
 {
-    if ( CanHaveAttributes() )
+    // Hide the edit control, so it
+    // won't interfere with drag-shrinking.
+    if ( IsCellEditControlShown() )
     {
     {
-        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
-        attr->SetReadOnly(isReadOnly);
-        attr->DecRef();
+        HideCellEditControl();
+        SaveEditControlValue();
     }
     }
-}
 
 
-// ----------------------------------------------------------------------------
-// Data type registration
-// ----------------------------------------------------------------------------
+    // autosize column width depending on label text
+    SetColSize(col, -1);
 
 
-void wxGrid::RegisterDataType(const wxString& typeName,
-                              wxGridCellRenderer* renderer,
-                              wxGridCellEditor* editor)
-{
-    m_typeRegistry->RegisterDataType(typeName, renderer, editor);
+    ForceRefresh();
 }
 
 }
 
-
-wxGridCellEditor* wxGrid::GetDefaultEditorForCell(int row, int col) const
+wxSize wxGrid::DoGetBestSize() const
 {
 {
-    wxString typeName = m_table->GetTypeName(row, col);
-    return GetDefaultEditorForType(typeName);
+    wxGrid * const self = const_cast<wxGrid *>(this);
+
+    // we do the same as in AutoSize() here with the exception that we don't
+    // change the column/row sizes, only calculate them
+    wxSize size(self->SetOrCalcColumnSizes(true) - m_rowLabelWidth + m_extraWidth,
+                self->SetOrCalcRowSizes(true) - m_colLabelHeight + m_extraHeight);
+
+    return wxSize(size.x + m_rowLabelWidth, size.y + m_colLabelHeight)
+            + GetWindowBorderSize();
 }
 
 }
 
-wxGridCellRenderer* wxGrid::GetDefaultRendererForCell(int row, int col) const
+void wxGrid::Fit()
 {
 {
-    wxString typeName = m_table->GetTypeName(row, col);
-    return GetDefaultRendererForType(typeName);
+    AutoSize();
 }
 
 }
 
-wxGridCellEditor*
-wxGrid::GetDefaultEditorForType(const wxString& typeName) const
+#if WXWIN_COMPATIBILITY_2_8
+wxPen& wxGrid::GetDividerPen() const
 {
 {
-    int index = m_typeRegistry->FindOrCloneDataType(typeName);
-    if ( index == wxNOT_FOUND )
-    {
-        wxFAIL_MSG(wxT("Unknown data type name"));
-
-        return NULL;
-    }
-
-    return m_typeRegistry->GetEditor(index);
+    return wxNullPen;
 }
 }
+#endif // WXWIN_COMPATIBILITY_2_8
+
+// ----------------------------------------------------------------------------
+// cell value accessor functions
+// ----------------------------------------------------------------------------
 
 
-wxGridCellRenderer*
-wxGrid::GetDefaultRendererForType(const wxString& typeName) const
+void wxGrid::SetCellValue( int row, int col, const wxString& s )
 {
 {
-    int index = m_typeRegistry->FindOrCloneDataType(typeName);
-    if ( index == wxNOT_FOUND )
+    if ( m_table )
     {
     {
-        wxFAIL_MSG(wxT("Unknown data type name"));
+        m_table->SetValue( row, col, s );
+        if ( !GetBatchCount() )
+        {
+            int dummy;
+            wxRect rect( CellToRect( row, col ) );
+            rect.x = 0;
+            rect.width = m_gridWin->GetClientSize().GetWidth();
+            CalcScrolledPosition(0, rect.y, &dummy, &rect.y);
+            m_gridWin->Refresh( false, &rect );
+        }
 
 
-        return NULL;
+        if ( m_currentCellCoords.GetRow() == row &&
+             m_currentCellCoords.GetCol() == col &&
+             IsCellEditControlShown())
+             // Note: If we are using IsCellEditControlEnabled,
+             // this interacts badly with calling SetCellValue from
+             // an EVT_GRID_CELL_CHANGE handler.
+        {
+            HideCellEditControl();
+            ShowCellEditControl(); // will reread data from table
+        }
     }
     }
-
-    return m_typeRegistry->GetRenderer(index);
 }
 
 }
 
-
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
-// row/col size
+// block, row and column selection
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 
-void wxGrid::EnableDragRowSize( bool enable )
+void wxGrid::SelectRow( int row, bool addToSelected )
 {
 {
-    m_canDragRowSize = enable;
-}
+    if ( !m_selection )
+        return;
 
 
+    if ( !addToSelected )
+        ClearSelection();
 
 
-void wxGrid::EnableDragColSize( bool enable )
-{
-    m_canDragColSize = enable;
+    m_selection->SelectRow(row);
 }
 
 }
 
-void wxGrid::EnableDragGridSize( bool enable )
+void wxGrid::SelectCol( int col, bool addToSelected )
 {
 {
-    m_canDragGridSize = enable;
-}
+    if ( !m_selection )
+        return;
 
 
+    if ( !addToSelected )
+        ClearSelection();
 
 
-void wxGrid::SetDefaultRowSize( int height, bool resizeExistingRows )
+    m_selection->SelectCol(col);
+}
+
+void wxGrid::SelectBlock(int topRow, int leftCol, int bottomRow, int rightCol,
+                         bool addToSelected)
 {
 {
-    m_defaultRowHeight = wxMax( height, WXGRID_MIN_ROW_HEIGHT );
+    if ( !m_selection )
+        return;
 
 
-    if ( resizeExistingRows )
-    {
-        InitRowHeights();
+    if ( !addToSelected )
+        ClearSelection();
 
 
-        CalcDimensions();
-    }
+    m_selection->SelectBlock(topRow, leftCol, bottomRow, rightCol);
 }
 
 }
 
-void wxGrid::SetRowSize( int row, int height )
+void wxGrid::SelectAll()
 {
 {
-    wxCHECK_RET( row >= 0 && row < m_numRows, _T("invalid row index") );
-
-    if ( m_rowHeights.IsEmpty() )
+    if ( m_numRows > 0 && m_numCols > 0 )
     {
     {
-        // need to really create the array
-        InitRowHeights();
+        if ( m_selection )
+            m_selection->SelectBlock( 0, 0, m_numRows - 1, m_numCols - 1 );
     }
     }
+}
 
 
-    int h = wxMax( 0, height );
-    int diff = h - m_rowHeights[row];
+// ----------------------------------------------------------------------------
+// cell, row and col deselection
+// ----------------------------------------------------------------------------
 
 
-    m_rowHeights[row] = h;
-    int i;
-    for ( i = row;  i < m_numRows;  i++ )
+void wxGrid::DeselectLine(int line, const wxGridOperations& oper)
+{
+    if ( !m_selection )
+        return;
+
+    const wxGridSelectionModes mode = m_selection->GetSelectionMode();
+    if ( mode == oper.GetSelectionMode() ||
+            mode == wxGrid::wxGridSelectRowsOrColumns )
     {
     {
-        m_rowBottoms[i] += diff;
+        const wxGridCellCoords c(oper.MakeCoords(line, 0));
+        if ( m_selection->IsInSelection(c) )
+            m_selection->ToggleCellSelection(c);
     }
     }
-    CalcDimensions();
+    else if ( mode != oper.Dual().GetSelectionMode() )
+    {
+        const int nOther = oper.Dual().GetNumberOfLines(this);
+        for ( int i = 0; i < nOther; i++ )
+        {
+            const wxGridCellCoords c(oper.MakeCoords(line, i));
+            if ( m_selection->IsInSelection(c) )
+                m_selection->ToggleCellSelection(c);
+        }
+    }
+    //else: can only select orthogonal lines so no lines in this direction
+    //      could have been selected anyhow
 }
 
 }
 
-void wxGrid::SetDefaultColSize( int width, bool resizeExistingCols )
+void wxGrid::DeselectRow(int row)
 {
 {
-    m_defaultColWidth = wxMax( width, WXGRID_MIN_COL_WIDTH );
+    DeselectLine(row, wxGridRowOperations());
+}
 
 
-    if ( resizeExistingCols )
-    {
-        InitColWidths();
+void wxGrid::DeselectCol(int col)
+{
+    DeselectLine(col, wxGridColumnOperations());
+}
 
 
-        CalcDimensions();
-    }
+void wxGrid::DeselectCell( int row, int col )
+{
+    if ( m_selection && m_selection->IsInSelection(row, col) )
+        m_selection->ToggleCellSelection(row, col);
 }
 
 }
 
-void wxGrid::SetColSize( int col, int width )
+bool wxGrid::IsSelection() const
 {
 {
-    wxCHECK_RET( col >= 0 && col < m_numCols, _T("invalid column index") );
+    return ( m_selection && (m_selection->IsSelection() ||
+             ( m_selectedBlockTopLeft != wxGridNoCellCoords &&
+               m_selectedBlockBottomRight != wxGridNoCellCoords) ) );
+}
 
 
-    // should we check that it's bigger than GetColMinimalWidth(col) here?
+bool wxGrid::IsInSelection( int row, int col ) const
+{
+    return ( m_selection && (m_selection->IsInSelection( row, col ) ||
+             ( row >= m_selectedBlockTopLeft.GetRow() &&
+               col >= m_selectedBlockTopLeft.GetCol() &&
+               row <= m_selectedBlockBottomRight.GetRow() &&
+               col <= m_selectedBlockBottomRight.GetCol() )) );
+}
 
 
-    if ( m_colWidths.IsEmpty() )
+wxGridCellCoordsArray wxGrid::GetSelectedCells() const
+{
+    if (!m_selection)
     {
     {
-        // need to really create the array
-        InitColWidths();
+        wxGridCellCoordsArray a;
+        return a;
     }
 
     }
 
-    int w = wxMax( 0, width );
-    int diff = w - m_colWidths[col];
-    m_colWidths[col] = w;
+    return m_selection->m_cellSelection;
+}
 
 
-    int i;
-    for ( i = col;  i < m_numCols;  i++ )
+wxGridCellCoordsArray wxGrid::GetSelectionBlockTopLeft() const
+{
+    if (!m_selection)
     {
     {
-        m_colRights[i] += diff;
+        wxGridCellCoordsArray a;
+        return a;
     }
     }
-    CalcDimensions();
-}
 
 
-
-void wxGrid::SetColMinimalWidth( int col, int width )
-{
-    m_colMinWidths.Put(col, width);
+    return m_selection->m_blockSelectionTopLeft;
 }
 
 }
 
-void wxGrid::SetRowMinimalHeight( int row, int width )
+wxGridCellCoordsArray wxGrid::GetSelectionBlockBottomRight() const
 {
 {
-    m_rowMinHeights.Put(row, width);
+    if (!m_selection)
+    {
+        wxGridCellCoordsArray a;
+        return a;
+    }
+
+    return m_selection->m_blockSelectionBottomRight;
 }
 
 }
 
-int wxGrid::GetColMinimalWidth(int col) const
+wxArrayInt wxGrid::GetSelectedRows() const
 {
 {
-    long value = m_colMinWidths.Get(col);
-    return value != wxNOT_FOUND ? (int)value : WXGRID_MIN_COL_WIDTH;
+    if (!m_selection)
+    {
+        wxArrayInt a;
+        return a;
+    }
+
+    return m_selection->m_rowSelection;
 }
 
 }
 
-int wxGrid::GetRowMinimalHeight(int row) const
+wxArrayInt wxGrid::GetSelectedCols() const
 {
 {
-    long value = m_rowMinHeights.Get(row);
-    return value != wxNOT_FOUND ? (int)value : WXGRID_MIN_ROW_HEIGHT;
-}
+    if (!m_selection)
+    {
+        wxArrayInt a;
+        return a;
+    }
 
 
-// ----------------------------------------------------------------------------
-// auto sizing
-// ----------------------------------------------------------------------------
+    return m_selection->m_colSelection;
+}
 
 
-void wxGrid::AutoSizeColOrRow( int colOrRow, bool setAsMin, bool column )
+void wxGrid::ClearSelection()
 {
 {
-    wxClientDC dc(m_gridWin);
-
-    // init both of them to avoid compiler warnings, even if weo nly need one
-    int row = -1,
-        col = -1;
-    if ( column )
-        col = colOrRow;
-    else
-        row = colOrRow;
+    wxRect r1 = BlockToDeviceRect(m_selectedBlockTopLeft,
+                                  m_selectedBlockBottomRight);
+    wxRect r2 = BlockToDeviceRect(m_currentCellCoords,
+                                  m_selectedBlockCorner);
 
 
-    wxCoord extent, extentMax = 0;
-    int max = column ? m_numRows : m_numCols;
-    for ( int rowOrCol = 0; rowOrCol < max; rowOrCol++ )
-    {
-        if ( column )
-            row = rowOrCol;
-        else
-            col = rowOrCol;
+    m_selectedBlockTopLeft =
+    m_selectedBlockBottomRight =
+    m_selectedBlockCorner = wxGridNoCellCoords;
 
 
-        wxGridCellAttr* attr = GetCellAttr(row, col);
-        wxGridCellRenderer* renderer = attr->GetRenderer(this, row, col);
-        if ( renderer )
-        {
-            wxSize size = renderer->GetBestSize(*this, *attr, dc, row, col);
-            extent = column ? size.x : size.y;
-            if ( extent > extentMax )
-            {
-                extentMax = extent;
-            }
+    if ( !r1.IsEmpty() )
+        RefreshRect(r1, false);
+    if ( !r2.IsEmpty() )
+        RefreshRect(r2, false);
 
 
-            renderer->DecRef();
-        }
+    if ( m_selection )
+        m_selection->ClearSelection();
+}
 
 
-        attr->DecRef();
+// This function returns the rectangle that encloses the given block
+// in device coords clipped to the client size of the grid window.
+//
+wxRect wxGrid::BlockToDeviceRect( const wxGridCellCoords& topLeft,
+                                  const wxGridCellCoords& bottomRight ) const
+{
+    wxRect resultRect;
+    wxRect tempCellRect = CellToRect(topLeft);
+    if ( tempCellRect != wxGridNoCellRect )
+    {
+        resultRect = tempCellRect;
     }
     }
-
-    // now also compare with the column label extent
-    wxCoord w, h;
-    dc.SetFont( GetLabelFont() );
-
-    if ( column )
-        dc.GetTextExtent( GetColLabelValue(col), &w, &h );
     else
     else
-        dc.GetTextExtent( GetRowLabelValue(col), &w, &h );
-
-    extent = column ? w : h;
-    if ( extent > extentMax )
     {
     {
-        extentMax = extent;
+        resultRect = wxRect(0, 0, 0, 0);
     }
 
     }
 
-    if ( !extentMax )
+    tempCellRect = CellToRect(bottomRight);
+    if ( tempCellRect != wxGridNoCellRect )
     {
     {
-        // empty column - give default extent (notice that if extentMax is less
-        // than default extent but != 0, it's ok)
-        extentMax = column ? m_defaultColWidth : m_defaultRowHeight;
+        resultRect += tempCellRect;
     }
     else
     {
     }
     else
     {
-        if ( column )
-        {
-            // leave some space around text
-            extentMax += 10;
-        }
+        // If both inputs were "wxGridNoCellRect," then there's nothing to do.
+        return wxGridNoCellRect;
     }
 
     }
 
-    if ( column )
-        SetColSize(col, extentMax);
-    else
-        SetRowSize(row, extentMax);
+    // Ensure that left/right and top/bottom pairs are in order.
+    int left = resultRect.GetLeft();
+    int top = resultRect.GetTop();
+    int right = resultRect.GetRight();
+    int bottom = resultRect.GetBottom();
 
 
-    if ( setAsMin )
+    int leftCol = topLeft.GetCol();
+    int topRow = topLeft.GetRow();
+    int rightCol = bottomRight.GetCol();
+    int bottomRow = bottomRight.GetRow();
+
+    if (left > right)
     {
     {
-        if ( column )
-            SetColMinimalWidth(col, extentMax);
-        else
-            SetRowMinimalHeight(row, extentMax);
-    }
-}
+        int tmp = left;
+        left = right;
+        right = tmp;
 
 
-int wxGrid::SetOrCalcColumnSizes(bool calcOnly, bool setAsMin)
-{
-    int width = m_rowLabelWidth;
+        tmp = leftCol;
+        leftCol = rightCol;
+        rightCol = tmp;
+    }
 
 
-    for ( int col = 0; col < m_numCols; col++ )
+    if (top > bottom)
     {
     {
-        if ( !calcOnly )
-        {
-            AutoSizeColumn(col, setAsMin);
-        }
+        int tmp = top;
+        top = bottom;
+        bottom = tmp;
 
 
-        width += GetColWidth(col);
+        tmp = topRow;
+        topRow = bottomRow;
+        bottomRow = tmp;
     }
 
     }
 
-    return width;
-}
+    // The following loop is ONLY necessary to detect and handle merged cells.
+    int cw, ch;
+    m_gridWin->GetClientSize( &cw, &ch );
 
 
-int wxGrid::SetOrCalcRowSizes(bool calcOnly, bool setAsMin)
-{
-    int height = m_colLabelHeight;
+    // Get the origin coordinates: notice that they will be negative if the
+    // grid is scrolled downwards/to the right.
+    int gridOriginX = 0;
+    int gridOriginY = 0;
+    CalcScrolledPosition(gridOriginX, gridOriginY, &gridOriginX, &gridOriginY);
 
 
-    for ( int row = 0; row < m_numRows; row++ )
+    int onScreenLeftmostCol = internalXToCol(-gridOriginX);
+    int onScreenUppermostRow = internalYToRow(-gridOriginY);
+
+    int onScreenRightmostCol = internalXToCol(-gridOriginX + cw);
+    int onScreenBottommostRow = internalYToRow(-gridOriginY + ch);
+
+    // Bound our loop so that we only examine the portion of the selected block
+    // that is shown on screen. Therefore, we compare the Top-Left block values
+    // to the Top-Left screen values, and the Bottom-Right block values to the
+    // Bottom-Right screen values, choosing appropriately.
+    const int visibleTopRow = wxMax(topRow, onScreenUppermostRow);
+    const int visibleBottomRow = wxMin(bottomRow, onScreenBottommostRow);
+    const int visibleLeftCol = wxMax(leftCol, onScreenLeftmostCol);
+    const int visibleRightCol = wxMin(rightCol, onScreenRightmostCol);
+
+    for ( int j = visibleTopRow; j <= visibleBottomRow; j++ )
     {
     {
-        if ( !calcOnly )
+        for ( int i = visibleLeftCol; i <= visibleRightCol; i++ )
         {
         {
-            AutoSizeRow(row, setAsMin);
+            if ( (j == visibleTopRow) || (j == visibleBottomRow) ||
+                    (i == visibleLeftCol) || (i == visibleRightCol) )
+            {
+                tempCellRect = CellToRect( j, i );
+
+                if (tempCellRect.x < left)
+                    left = tempCellRect.x;
+                if (tempCellRect.y < top)
+                    top = tempCellRect.y;
+                if (tempCellRect.x + tempCellRect.width > right)
+                    right = tempCellRect.x + tempCellRect.width;
+                if (tempCellRect.y + tempCellRect.height > bottom)
+                    bottom = tempCellRect.y + tempCellRect.height;
+            }
+            else
+            {
+                i = visibleRightCol; // jump over inner cells.
+            }
         }
         }
+    }
 
 
-        height += GetRowHeight(row);
+    // Convert to scrolled coords
+    CalcScrolledPosition( left, top, &left, &top );
+    CalcScrolledPosition( right, bottom, &right, &bottom );
+
+    if (right < 0 || bottom < 0 || left > cw || top > ch)
+        return wxRect(0,0,0,0);
+
+    resultRect.SetLeft( wxMax(0, left) );
+    resultRect.SetTop( wxMax(0, top) );
+    resultRect.SetRight( wxMin(cw, right) );
+    resultRect.SetBottom( wxMin(ch, bottom) );
+
+    return resultRect;
+}
+
+void wxGrid::DoSetSizes(const wxGridSizesInfo& sizeInfo,
+                        const wxGridOperations& oper)
+{
+    BeginBatch();
+    oper.SetDefaultLineSize(this, sizeInfo.m_sizeDefault, true);
+    const int numLines = oper.GetNumberOfLines(this);
+    for ( int i = 0; i < numLines; i++ )
+    {
+        int size = sizeInfo.GetSize(i);
+        if ( size != sizeInfo.m_sizeDefault)
+            oper.SetLineSize(this, i, size);
     }
     }
+    EndBatch();
+}
+
+void wxGrid::SetColSizes(const wxGridSizesInfo& sizeInfo)
+{
+    DoSetSizes(sizeInfo, wxGridColumnOperations());
+}
 
 
-    return height;
+void wxGrid::SetRowSizes(const wxGridSizesInfo& sizeInfo)
+{
+    DoSetSizes(sizeInfo, wxGridRowOperations());
 }
 
 }
 
-void wxGrid::AutoSize()
+wxGridSizesInfo::wxGridSizesInfo(int defSize, const wxArrayInt& allSizes)
 {
 {
-    // set the size too
-    SetSize(SetOrCalcColumnSizes(FALSE), SetOrCalcRowSizes(FALSE));
+    m_sizeDefault = defSize;
+    for ( size_t i = 0; i < allSizes.size(); i++ )
+    {
+        if ( allSizes[i] != defSize )
+            m_customSizes[i] = allSizes[i];
+    }
 }
 
 }
 
-wxSize wxGrid::DoGetBestSize() const
+int wxGridSizesInfo::GetSize(unsigned pos) const
 {
 {
-    // don't set sizes, only calculate them
-    wxGrid *self = (wxGrid *)this;  // const_cast
+    wxUnsignedToIntHashMap::const_iterator it = m_customSizes.find(pos);
+
+    // if it's not found return the default
+    if ( it == m_customSizes.end() )
+      return m_sizeDefault;
+
+    // otherwise return 0 if it's hidden, currently there is no way to get
+    // its size before it had been hidden
+    if ( it->second < 0 )
+      return 0;
 
 
-    return wxSize(self->SetOrCalcColumnSizes(TRUE),
-                  self->SetOrCalcRowSizes(TRUE));
+    return it->second;
 }
 
 }
 
-void wxGrid::Fit()
+// ----------------------------------------------------------------------------
+// drop target
+// ----------------------------------------------------------------------------
+
+#if wxUSE_DRAG_AND_DROP
+
+// this allow setting drop target directly on wxGrid
+void wxGrid::SetDropTarget(wxDropTarget *dropTarget)
 {
 {
-    AutoSize();
+    GetGridWindow()->SetDropTarget(dropTarget);
 }
 
 }
 
+#endif // wxUSE_DRAG_AND_DROP
+
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
-// cell value accessor functions
+// grid event classes
 // ----------------------------------------------------------------------------
 
 // ----------------------------------------------------------------------------
 
-void wxGrid::SetCellValue( int row, int col, const wxString& s )
+IMPLEMENT_DYNAMIC_CLASS( wxGridEvent, wxNotifyEvent )
+
+wxGridEvent::wxGridEvent( int id, wxEventType type, wxObject* obj,
+                          int row, int col, int x, int y, bool sel,
+                          bool control, bool shift, bool alt, bool meta )
+        : wxNotifyEvent( type, id ),
+          wxKeyboardState(control, shift, alt, meta)
 {
 {
-    if ( m_table )
-    {
-        m_table->SetValue( row, col, s.c_str() );
-        if ( !GetBatchCount() )
-        {
-            wxClientDC dc( m_gridWin );
-            PrepareDC( dc );
-            DrawCell( dc, wxGridCellCoords(row, col) );
-        }
+    Init(row, col, x, y, sel);
 
 
-        if ( m_currentCellCoords.GetRow() == row &&
-             m_currentCellCoords.GetCol() == col &&
-             IsCellEditControlEnabled())
-        {
-            HideCellEditControl();
-            ShowCellEditControl(); // will reread data from table
-        }
-    }
+    SetEventObject(obj);
 }
 
 }
 
+IMPLEMENT_DYNAMIC_CLASS( wxGridSizeEvent, wxNotifyEvent )
 
 
-//
-// ------ Block, row and col selection
-//
-
-void wxGrid::SelectRow( int row, bool addToSelected )
+wxGridSizeEvent::wxGridSizeEvent( int id, wxEventType type, wxObject* obj,
+                                  int rowOrCol, int x, int y,
+                                  bool control, bool shift, bool alt, bool meta )
+        : wxNotifyEvent( type, id ),
+          wxKeyboardState(control, shift, alt, meta)
 {
 {
-    if ( IsSelection() && !addToSelected )
-        m_selection->ClearSelection();
+    Init(rowOrCol, x, y);
+
+    SetEventObject(obj);
+}
 
 
-    m_selection->SelectRow( row );
 
 
-    wxGridRangeSelectEvent gridEvt( GetId(),
-                                    wxEVT_GRID_RANGE_SELECT,
-                                    this,
-                                    wxGridCellCoords( row, 0 ),
-                                    wxGridCellCoords( row, m_numCols - 1 ) );
+IMPLEMENT_DYNAMIC_CLASS( wxGridRangeSelectEvent, wxNotifyEvent )
+
+wxGridRangeSelectEvent::wxGridRangeSelectEvent(int id, wxEventType type, wxObject* obj,
+                                               const wxGridCellCoords& topLeft,
+                                               const wxGridCellCoords& bottomRight,
+                                               bool sel, bool control,
+                                               bool shift, bool alt, bool meta )
+        : wxNotifyEvent( type, id ),
+          wxKeyboardState(control, shift, alt, meta)
+{
+    Init(topLeft, bottomRight, sel);
 
 
-    GetEventHandler()->ProcessEvent(gridEvt);
+    SetEventObject(obj);
 }
 
 
 }
 
 
-void wxGrid::SelectCol( int col, bool addToSelected )
+IMPLEMENT_DYNAMIC_CLASS(wxGridEditorCreatedEvent, wxCommandEvent)
+
+wxGridEditorCreatedEvent::wxGridEditorCreatedEvent(int id, wxEventType type,
+                                                   wxObject* obj, int row,
+                                                   int col, wxControl* ctrl)
+    : wxCommandEvent(type, id)
 {
 {
-    if ( IsSelection() && !addToSelected )
-        m_selection->ClearSelection();
+    SetEventObject(obj);
+    m_row = row;
+    m_col = col;
+    m_ctrl = ctrl;
+}
 
 
-    m_selection->SelectCol( col );
 
 
-    wxGridRangeSelectEvent gridEvt( GetId(),
-                                    wxEVT_GRID_RANGE_SELECT,
-                                    this,
-                                    wxGridCellCoords( 0, col ),
-                                    wxGridCellCoords( m_numRows - 1, col ) );
+// ----------------------------------------------------------------------------
+// wxGridTypeRegistry
+// ----------------------------------------------------------------------------
 
 
-    GetEventHandler()->ProcessEvent(gridEvt);
+wxGridTypeRegistry::~wxGridTypeRegistry()
+{
+    size_t count = m_typeinfo.GetCount();
+    for ( size_t i = 0; i < count; i++ )
+        delete m_typeinfo[i];
 }
 
 }
 
-
-void wxGrid::SelectBlock( int topRow, int leftCol, int bottomRow, int rightCol )
+void wxGridTypeRegistry::RegisterDataType(const wxString& typeName,
+                                          wxGridCellRenderer* renderer,
+                                          wxGridCellEditor* editor)
 {
 {
-    int temp;
-    wxGridCellCoords updateTopLeft, updateBottomRight;
+    wxGridDataTypeInfo* info = new wxGridDataTypeInfo(typeName, renderer, editor);
 
 
-    if ( topRow > bottomRow )
+    // is it already registered?
+    int loc = FindRegisteredDataType(typeName);
+    if ( loc != wxNOT_FOUND )
     {
     {
-        temp = topRow;
-        topRow = bottomRow;
-        bottomRow = temp;
+        delete m_typeinfo[loc];
+        m_typeinfo[loc] = info;
     }
     }
-
-    if ( leftCol > rightCol )
+    else
     {
     {
-        temp = leftCol;
-        leftCol = rightCol;
-        rightCol = temp;
+        m_typeinfo.Add(info);
     }
     }
+}
 
 
-    updateTopLeft = wxGridCellCoords( topRow, leftCol );
-    updateBottomRight = wxGridCellCoords( bottomRow, rightCol );
-
-    if ( m_selectingTopLeft != updateTopLeft ||
-         m_selectingBottomRight != updateBottomRight )
+int wxGridTypeRegistry::FindRegisteredDataType(const wxString& typeName)
+{
+    size_t count = m_typeinfo.GetCount();
+    for ( size_t i = 0; i < count; i++ )
     {
     {
-        // Compute two optimal update rectangles:
-        // Either one rectangle is a real subset of the
-        // other, or they are (almost) disjoint!
-        wxRect  rect[4];
-        bool    need_refresh[4];
-        need_refresh[0] =
-        need_refresh[1] =
-        need_refresh[2] =
-        need_refresh[3] = FALSE;
-        int     i;
-
-        // Store intermediate values
-        wxCoord oldLeft   = m_selectingTopLeft.GetCol();
-        wxCoord oldTop    = m_selectingTopLeft.GetRow();
-        wxCoord oldRight  = m_selectingBottomRight.GetCol();
-        wxCoord oldBottom = m_selectingBottomRight.GetRow();
-
-        // Determine the outer/inner coordinates.
-        if (oldLeft > leftCol)
-        {
-            temp = oldLeft;
-            oldLeft = leftCol;
-            leftCol = temp;
-        }
-        if (oldTop > topRow )
+        if ( typeName == m_typeinfo[i]->m_typeName )
         {
         {
-            temp = oldTop;
-            oldTop = topRow;
-            topRow = temp;
+            return i;
         }
         }
-        if (oldRight < rightCol )
+    }
+
+    return wxNOT_FOUND;
+}
+
+int wxGridTypeRegistry::FindDataType(const wxString& typeName)
+{
+    int index = FindRegisteredDataType(typeName);
+    if ( index == wxNOT_FOUND )
+    {
+        // check whether this is one of the standard ones, in which case
+        // register it "on the fly"
+#if wxUSE_TEXTCTRL
+        if ( typeName == wxGRID_VALUE_STRING )
         {
         {
-            temp = oldRight;
-            oldRight = rightCol;
-            rightCol = temp;
+            RegisterDataType(wxGRID_VALUE_STRING,
+                             new wxGridCellStringRenderer,
+                             new wxGridCellTextEditor);
         }
         }
-        if (oldBottom < bottomRow)
+        else
+#endif // wxUSE_TEXTCTRL
+#if wxUSE_CHECKBOX
+        if ( typeName == wxGRID_VALUE_BOOL )
         {
         {
-            temp = oldBottom;
-            oldBottom = bottomRow;
-            bottomRow = temp;
+            RegisterDataType(wxGRID_VALUE_BOOL,
+                             new wxGridCellBoolRenderer,
+                             new wxGridCellBoolEditor);
         }
         }
-
-        // Now, either the stuff marked old is the outer
-        // rectangle or we don't have a situation where one
-        // is contained in the other.
-
-        if ( oldLeft < leftCol )
+        else
+#endif // wxUSE_CHECKBOX
+#if wxUSE_TEXTCTRL
+        if ( typeName == wxGRID_VALUE_NUMBER )
         {
         {
-            need_refresh[0] = TRUE;
-            rect[0] = BlockToDeviceRect( wxGridCellCoords ( oldTop,
-                                                            oldLeft ),
-                                         wxGridCellCoords ( oldBottom,
-                                                            leftCol - 1 ) );
+            RegisterDataType(wxGRID_VALUE_NUMBER,
+                             new wxGridCellNumberRenderer,
+                             new wxGridCellNumberEditor);
         }
         }
-
-        if ( oldTop  < topRow )
+        else if ( typeName == wxGRID_VALUE_FLOAT )
         {
         {
-            need_refresh[1] = TRUE;
-            rect[1] = BlockToDeviceRect( wxGridCellCoords ( oldTop,
-                                                            leftCol ),
-                                         wxGridCellCoords ( topRow - 1,
-                                                            rightCol ) );
+            RegisterDataType(wxGRID_VALUE_FLOAT,
+                             new wxGridCellFloatRenderer,
+                             new wxGridCellFloatEditor);
         }
         }
-
-        if ( oldRight > rightCol )
+        else
+#endif // wxUSE_TEXTCTRL
+#if wxUSE_COMBOBOX
+        if ( typeName == wxGRID_VALUE_CHOICE )
         {
         {
-            need_refresh[2] = TRUE;
-            rect[2] = BlockToDeviceRect( wxGridCellCoords ( oldTop,
-                                                            rightCol + 1 ),
-                                         wxGridCellCoords ( oldBottom,
-                                                            oldRight ) );
+            RegisterDataType(wxGRID_VALUE_CHOICE,
+                             new wxGridCellStringRenderer,
+                             new wxGridCellChoiceEditor);
         }
         }
-
-        if ( oldBottom > bottomRow )
+        else
+#endif // wxUSE_COMBOBOX
         {
         {
-            need_refresh[3] = TRUE;
-            rect[3] = BlockToDeviceRect( wxGridCellCoords ( bottomRow + 1,
-                                                            leftCol ),
-                                         wxGridCellCoords ( oldBottom,
-                                                            rightCol ) );
+            return wxNOT_FOUND;
         }
 
         }
 
-
-        // Change Selection
-        m_selectingTopLeft = updateTopLeft;
-        m_selectingBottomRight = updateBottomRight;
-
-        // various Refresh() calls
-        for (i = 0; i < 4; i++ )
-            if ( need_refresh[i] && rect[i] != wxGridNoCellRect )
-                m_gridWin->Refresh( FALSE, &(rect[i]) );
-    }
-
-    // only generate an event if the block is not being selected by
-    // dragging the mouse (in which case the event will be generated in
-    // the mouse event handler)
-    if ( !m_isDragging )
-    {
-        wxGridRangeSelectEvent gridEvt( GetId(),
-                                        wxEVT_GRID_RANGE_SELECT,
-                                        this,
-                                        m_selectingTopLeft,
-                                        m_selectingBottomRight );
-
-        GetEventHandler()->ProcessEvent(gridEvt);
+        // we get here only if just added the entry for this type, so return
+        // the last index
+        index = m_typeinfo.GetCount() - 1;
     }
     }
-}
-
-void wxGrid::SelectAll()
-{
-    m_selection->SelectBlock( 0, 0, m_numRows-1, m_numCols-1 );
-}
 
 
-bool wxGrid::IsSelection()
-{
-    return ( m_selection->IsSelection() ||
-             ( m_selectingTopLeft != wxGridNoCellCoords &&
-               m_selectingBottomRight != wxGridNoCellCoords ) );
-}
-
-bool wxGrid::IsInSelection( int row, int col )
-{
-    return ( m_selection->IsInSelection( row, col ) ||
-             ( row >= m_selectingTopLeft.GetRow() &&
-               col >= m_selectingTopLeft.GetCol() &&
-               row <= m_selectingBottomRight.GetRow() &&
-               col <= m_selectingBottomRight.GetCol() ) );
-}
-
-void wxGrid::ClearSelection()
-{
-    m_selectingTopLeft = wxGridNoCellCoords;
-    m_selectingBottomRight = wxGridNoCellCoords;
-    m_selection->ClearSelection();
+    return index;
 }
 
 }
 
-
-// This function returns the rectangle that encloses the given block
-// in device coords clipped to the client size of the grid window.
-//
-wxRect wxGrid::BlockToDeviceRect( const wxGridCellCoords &topLeft,
-                                  const wxGridCellCoords &bottomRight )
+int wxGridTypeRegistry::FindOrCloneDataType(const wxString& typeName)
 {
 {
-    wxRect rect( wxGridNoCellRect );
-    wxRect cellRect;
-
-    cellRect = CellToRect( topLeft );
-    if ( cellRect != wxGridNoCellRect )
-    {
-        rect = cellRect;
-    }
-    else
-    {
-        rect = wxRect( 0, 0, 0, 0 );
-    }
-
-    cellRect = CellToRect( bottomRight );
-    if ( cellRect != wxGridNoCellRect )
-    {
-        rect += cellRect;
-    }
-    else
+    int index = FindDataType(typeName);
+    if ( index == wxNOT_FOUND )
     {
     {
-        return wxGridNoCellRect;
-    }
-
-    // convert to scrolled coords
-    //
-    int left, top, right, bottom;
-    CalcScrolledPosition( rect.GetLeft(), rect.GetTop(), &left, &top );
-    CalcScrolledPosition( rect.GetRight(), rect.GetBottom(), &right, &bottom );
-
-    int cw, ch;
-    m_gridWin->GetClientSize( &cw, &ch );
-
-    rect.SetLeft( wxMax(0, left) );
-    rect.SetTop( wxMax(0, top) );
-    rect.SetRight( wxMin(cw, right) );
-    rect.SetBottom( wxMin(ch, bottom) );
-
-    return rect;
-}
+        // the first part of the typename is the "real" type, anything after ':'
+        // are the parameters for the renderer
+        index = FindDataType(typeName.BeforeFirst(wxT(':')));
+        if ( index == wxNOT_FOUND )
+        {
+            return wxNOT_FOUND;
+        }
 
 
+        wxGridCellRenderer *renderer = GetRenderer(index);
+        wxGridCellRenderer *rendererOld = renderer;
+        renderer = renderer->Clone();
+        rendererOld->DecRef();
 
 
+        wxGridCellEditor *editor = GetEditor(index);
+        wxGridCellEditor *editorOld = editor;
+        editor = editor->Clone();
+        editorOld->DecRef();
 
 
-//
-// ------ Grid event classes
-//
+        // do it even if there are no parameters to reset them to defaults
+        wxString params = typeName.AfterFirst(wxT(':'));
+        renderer->SetParameters(params);
+        editor->SetParameters(params);
 
 
-IMPLEMENT_DYNAMIC_CLASS( wxGridEvent, wxEvent )
+        // register the new typename
+        RegisterDataType(typeName, renderer, editor);
 
 
-wxGridEvent::wxGridEvent( int id, wxEventType type, wxObject* obj,
-                          int row, int col, int x, int y,
-                          bool control, bool shift, bool alt, bool meta )
-        : wxNotifyEvent( type, id )
-{
-    m_row = row;
-    m_col = col;
-    m_x = x;
-    m_y = y;
-    m_control = control;
-    m_shift = shift;
-    m_alt = alt;
-    m_meta = meta;
+        // we just registered it, it's the last one
+        index = m_typeinfo.GetCount() - 1;
+    }
 
 
-    SetEventObject(obj);
+    return index;
 }
 
 }
 
-
-IMPLEMENT_DYNAMIC_CLASS( wxGridSizeEvent, wxEvent )
-
-wxGridSizeEvent::wxGridSizeEvent( int id, wxEventType type, wxObject* obj,
-                                  int rowOrCol, int x, int y,
-                                  bool control, bool shift, bool alt, bool meta )
-        : wxNotifyEvent( type, id )
+wxGridCellRenderer* wxGridTypeRegistry::GetRenderer(int index)
 {
 {
-    m_rowOrCol = rowOrCol;
-    m_x = x;
-    m_y = y;
-    m_control = control;
-    m_shift = shift;
-    m_alt = alt;
-    m_meta = meta;
+    wxGridCellRenderer* renderer = m_typeinfo[index]->m_renderer;
+    if (renderer)
+        renderer->IncRef();
 
 
-    SetEventObject(obj);
+    return renderer;
 }
 
 }
 
-
-IMPLEMENT_DYNAMIC_CLASS( wxGridRangeSelectEvent, wxEvent )
-
-wxGridRangeSelectEvent::wxGridRangeSelectEvent(int id, wxEventType type, wxObject* obj,
-                                               const wxGridCellCoords& topLeft,
-                                               const wxGridCellCoords& bottomRight,
-                                               bool control, bool shift, bool alt, bool meta )
-        : wxNotifyEvent( type, id )
+wxGridCellEditor* wxGridTypeRegistry::GetEditor(int index)
 {
 {
-    m_topLeft     = topLeft;
-    m_bottomRight = bottomRight;
-    m_control     = control;
-    m_shift       = shift;
-    m_alt         = alt;
-    m_meta        = meta;
+    wxGridCellEditor* editor = m_typeinfo[index]->m_editor;
+    if (editor)
+        editor->IncRef();
 
 
-    SetEventObject(obj);
+    return editor;
 }
 
 }
 
-
-#endif // ifndef wxUSE_NEW_GRID
+#endif // wxUSE_GRID
wxWidgets (Impactor)