]> git.saurik.com Git - wxWidgets.git/blobdiff - src/generic/grid.cpp
Insert row/col now uses the current position to determine where to insert.
[wxWidgets.git] / src / generic / grid.cpp
index 0143f98d16b84ac7e1d870108e97bc895b4f1b75..edc925b87e7240fe13953e806f6182ea4ef5c84b 100644 (file)
@@ -1,4 +1,4 @@
-/////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////
 // Name:        grid.cpp
 // Purpose:     wxGrid and related classes
 // Author:      Michael Bedward (based on code by Julian Smart, Robin Dunn)
@@ -9,6 +9,14 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
 #ifdef __GNUG__
     #pragma implementation "grid.h"
 #endif
 // this include needs to be outside precomp for BCC
 #include "wx/textfile.h"
 
-#include "wx/generic/grid.h"
+#include "wx/grid.h"
+
 
 // ----------------------------------------------------------------------------
-// array classes instantiation
+// array classes
 // ----------------------------------------------------------------------------
 
+WX_DEFINE_ARRAY(wxGridCellAttr *, wxArrayAttrs);
+
 struct wxGridCellWithAttr
 {
-    wxGridCellWithAttr(int row, int col, const wxGridCellAttr *pAttr)
-        : coords(row, col), attr(*pAttr)
+    wxGridCellWithAttr(int row, int col, wxGridCellAttr *attr_)
+        : coords(row, col), attr(attr_)
     {
     }
 
+    ~wxGridCellWithAttr()
+    {
+        attr->DecRef();
+    }
+
     wxGridCellCoords coords;
-    wxGridCellAttr   attr;
+    wxGridCellAttr  *attr;
 };
 
 WX_DECLARE_OBJARRAY(wxGridCellWithAttr, wxGridCellWithAttrArray);
@@ -146,19 +162,54 @@ private:
     void OnPaint( wxPaintEvent &event );
     void OnMouseEvent( wxMouseEvent& event );
     void OnKeyDown( wxKeyEvent& );
+    void OnEraseBackground( wxEraseEvent& );
+
 
     DECLARE_DYNAMIC_CLASS(wxGridWindow)
     DECLARE_EVENT_TABLE()
 };
 
+
+
+class wxGridCellEditorEvtHandler : public wxEvtHandler
+{
+public:
+    wxGridCellEditorEvtHandler()
+        : m_grid(0), m_editor(0)
+        { }
+    wxGridCellEditorEvtHandler(wxGrid* grid, wxGridCellEditor* editor)
+        : m_grid(grid), m_editor(editor)
+        { }
+
+    void OnKeyDown(wxKeyEvent& event);
+
+private:
+    wxGrid*             m_grid;
+    wxGridCellEditor*   m_editor;
+    DECLARE_DYNAMIC_CLASS(wxGridCellEditorEvtHandler)
+    DECLARE_EVENT_TABLE()
+};
+
+
+IMPLEMENT_DYNAMIC_CLASS( wxGridCellEditorEvtHandler, wxEvtHandler )
+BEGIN_EVENT_TABLE( wxGridCellEditorEvtHandler, wxEvtHandler )
+    EVT_KEY_DOWN( wxGridCellEditorEvtHandler::OnKeyDown )
+END_EVENT_TABLE()
+
+
+
+// ----------------------------------------------------------------------------
 // the internal data representation used by wxGridCellAttrProvider
-//
-// TODO make it more efficient
-class WXDLLEXPORT wxGridCellAttrProviderData
+// ----------------------------------------------------------------------------
+
+// this class stores attributes set for cells
+class WXDLLEXPORT wxGridCellAttrData
 {
 public:
-    void SetAttr(const wxGridCellAttr *attr, int row, int col);
+    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
@@ -167,6 +218,31 @@ private:
     wxGridCellWithAttrArray m_attrs;
 };
 
+// this class stores attributes set for rows or columns
+class WXDLLEXPORT wxGridRowOrColAttrData
+{
+public:
+    ~wxGridRowOrColAttrData();
+
+    void SetAttr(wxGridCellAttr *attr, int rowOrCol);
+    wxGridCellAttr *GetAttr(int rowOrCol) const;
+    void UpdateAttrRowsOrCols( size_t pos, int numRowsOrCols );
+
+private:
+    wxArrayInt m_rowsOrCols;
+    wxArrayAttrs m_attrs;
+};
+
+// NB: this is just a wrapper around 3 objects: one which stores cell
+//     attributes, and 2 others for row/col ones
+class WXDLLEXPORT wxGridCellAttrProviderData
+{
+public:
+    wxGridCellAttrData m_cellAttrs;
+    wxGridRowOrColAttrData m_rowAttrs,
+                           m_colAttrs;
+};
+
 // ----------------------------------------------------------------------------
 // conditional compilation
 // ----------------------------------------------------------------------------
@@ -175,7 +251,15 @@ private:
 #define WXGRID_DRAW_LINES 1
 #endif
 
-//////////////////////////////////////////////////////////////////////
+// ----------------------------------------------------------------------------
+// globals
+// ----------------------------------------------------------------------------
+
+//#define DEBUG_ATTR_CACHE
+#ifdef DEBUG_ATTR_CACHE
+    static size_t gs_nAttrCacheHits = 0;
+    static size_t gs_nAttrCacheMisses = 0;
+#endif // DEBUG_ATTR_CACHE
 
 wxGridCellCoords wxGridNoCellCoords( -1, -1 );
 wxRect           wxGridNoCellRect( -1, -1, -1, -1 );
@@ -184,12 +268,333 @@ wxRect           wxGridNoCellRect( -1, -1, -1, -1 );
 // TODO: fixed so far - make configurable later (and also different for x/y)
 static const size_t GRID_SCROLL_LINE = 10;
 
+// ============================================================================
+// implementation
+// ============================================================================
+
+
 // ----------------------------------------------------------------------------
-// wxGridCellAttrProviderData
+// wxGridCellEditor
 // ----------------------------------------------------------------------------
 
-void wxGridCellAttrProviderData::SetAttr(const wxGridCellAttr *attr,
-                                         int row, int col)
+wxGridCellEditor::wxGridCellEditor()
+{
+    m_control = NULL;
+}
+
+
+wxGridCellEditor::~wxGridCellEditor()
+{
+    Destroy();
+}
+
+
+void wxGridCellEditor::Destroy()
+{
+    if (m_control) {
+        m_control->Destroy();
+        m_control = NULL;
+    }
+}
+
+void wxGridCellEditor::Show(bool show)
+{
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
+    m_control->Show(show);
+}
+
+void wxGridCellEditor::SetSize(const wxRect& rect)
+{
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
+    m_control->SetSize(rect);
+}
+
+void wxGridCellEditor::HandleReturn(wxKeyEvent& event)
+{
+    event.Skip();
+}
+
+
+void wxGridCellEditor::StartingKey(wxKeyEvent& event)
+{
+}
+
+
+
+wxGridCellTextEditor::wxGridCellTextEditor()
+{
+}
+
+void wxGridCellTextEditor::Create(wxWindow* parent,
+                                  wxWindowID id,
+                                  wxEvtHandler* evtHandler)
+{
+    m_control = new wxTextCtrl(parent, -1, "",
+                               wxDefaultPosition, wxDefaultSize
+#if defined(__WXMSW__)
+                               , wxTE_MULTILINE | wxTE_NO_VSCROLL // necessary ???
+#endif
+        );
+
+    if (evtHandler)
+        m_control->PushEventHandler(evtHandler);
+}
+
+
+void wxGridCellTextEditor::BeginEdit(int row, int col, wxGrid* grid,
+                           wxGridCellAttr* attr)
+{
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
+
+    m_startValue = grid->GetTable()->GetValue(row, col);
+    ((wxTextCtrl*)m_control)->SetValue(m_startValue);
+    ((wxTextCtrl*)m_control)->SetInsertionPointEnd();
+    ((wxTextCtrl*)m_control)->SetFocus();
+
+    // ???  Should we use attr and try to set colours and font?
+}
+
+
+
+bool wxGridCellTextEditor::EndEdit(int row, int col, bool saveValue,
+                                   wxGrid* grid, wxGridCellAttr* attr)
+{
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
+
+    bool changed = FALSE;
+    wxString value = ((wxTextCtrl*)m_control)->GetValue();
+    if (value != m_startValue)
+        changed = TRUE;
+
+    if (changed)
+        grid->GetTable()->SetValue(row, col, value);
+
+    m_startValue = "";
+    ((wxTextCtrl*)m_control)->SetValue(m_startValue);
+
+    return changed;
+}
+
+
+void wxGridCellTextEditor::Reset()
+{
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
+
+    ((wxTextCtrl*)m_control)->SetValue(m_startValue);
+    ((wxTextCtrl*)m_control)->SetInsertionPointEnd();
+}
+
+
+void wxGridCellTextEditor::StartingKey(wxKeyEvent& event)
+{
+    wxASSERT_MSG(m_control,
+                 wxT("The wxGridCellEditor must be Created first!"));
+
+    int code = event.KeyCode();
+    if (code >= 32 && code < 255) {
+        wxString st((char)code);
+        if (! event.ShiftDown())
+            st.LowerCase();
+        ((wxTextCtrl*)m_control)->AppendText(st);
+    }
+}
+
+
+void wxGridCellTextEditor::HandleReturn(wxKeyEvent& event)
+{
+#if defined(__WXMOTIF__) || defined(__WXGTK__)
+    // wxMotif needs a little extra help...
+    int pos = ((wxTextCtrl*)m_control)->GetInsertionPoint();
+    wxString s( ((wxTextCtrl*)m_control)->GetValue() );
+    s = s.Left(pos) + "\n" + s.Mid(pos);
+    ((wxTextCtrl*)m_control)->SetValue(s);
+    ((wxTextCtrl*)m_control)->SetInsertionPoint( pos );
+#else
+    // the other ports can handle a Return key press
+    //
+    event.Skip();
+#endif
+}
+
+
+void wxGridCellEditorEvtHandler::OnKeyDown(wxKeyEvent& event)
+{
+    switch ( event.KeyCode() )
+    {
+        case WXK_ESCAPE:
+            m_editor->Reset();
+            m_grid->EnableCellEditControl(FALSE);
+            break;
+
+        case WXK_TAB:
+            event.Skip( m_grid->ProcessEvent( event ) );
+            break;
+
+        case WXK_RETURN:
+            if (!m_grid->ProcessEvent(event))
+                m_editor->HandleReturn(event);
+            break;
+
+
+        default:
+            event.Skip();
+    }
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellRenderer
+// ----------------------------------------------------------------------------
+
+void wxGridCellRenderer::Draw(wxGrid& grid,
+                              wxGridCellAttr& attr,
+                              wxDC& dc,
+                              const wxRect& rect,
+                              int row, int col,
+                              bool isSelected)
+{
+    dc.SetBackgroundMode( wxSOLID );
+
+    if ( isSelected )
+    {
+        dc.SetBrush( wxBrush(grid.GetSelectionBackground(), wxSOLID) );
+    }
+    else
+    {
+        dc.SetBrush( wxBrush(attr.GetBackgroundColour(), wxSOLID) );
+    }
+
+    dc.SetPen( *wxTRANSPARENT_PEN );
+    dc.DrawRectangle(rect);
+}
+
+void wxGridCellStringRenderer::Draw(wxGrid& grid,
+                                    wxGridCellAttr& attr,
+                                    wxDC& dc,
+                                    const wxRect& rectCell,
+                                    int row, int col,
+                                    bool isSelected)
+{
+    wxGridCellRenderer::Draw(grid, attr, dc, rectCell, row, col, isSelected);
+
+    // now we only have to draw the text
+    dc.SetBackgroundMode( wxTRANSPARENT );
+
+    if ( isSelected )
+    {
+        dc.SetTextBackground( grid.GetSelectionBackground() );
+        dc.SetTextForeground( grid.GetSelectionForeground() );
+    }
+    else
+    {
+        dc.SetTextBackground( attr.GetBackgroundColour() );
+        dc.SetTextForeground( attr.GetTextColour() );
+    }
+    dc.SetFont( attr.GetFont() );
+
+    int hAlign, vAlign;
+    attr.GetAlignment(&hAlign, &vAlign);
+
+    wxRect rect = rectCell;
+    rect.x++;
+    rect.y++;
+    rect.width -= 2;
+    rect.height -= 2;
+
+    grid.DrawTextRectangle(dc, grid.GetCellValue(row, col),
+                           rect, hAlign, vAlign);
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellAttr
+// ----------------------------------------------------------------------------
+
+const wxColour& wxGridCellAttr::GetTextColour() const
+{
+    if (HasTextColour())
+        return m_colText;
+    else if (m_defGridAttr != this)
+        return m_defGridAttr->GetTextColour();
+    else {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+        return wxNullColour;
+    }
+}
+
+
+const wxColour& wxGridCellAttr::GetBackgroundColour() const
+{
+    if (HasBackgroundColour())
+        return m_colBack;
+    else if (m_defGridAttr != this)
+        return m_defGridAttr->GetBackgroundColour();
+    else {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+        return wxNullColour;
+    }
+}
+
+
+const wxFont& wxGridCellAttr::GetFont() const
+{
+    if (HasFont())
+        return m_font;
+    else if (m_defGridAttr != this)
+        return m_defGridAttr->GetFont();
+    else {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+        return wxNullFont;
+    }
+}
+
+
+void wxGridCellAttr::GetAlignment(int *hAlign, int *vAlign) const
+{
+    if (HasAlignment()) {
+        if ( hAlign ) *hAlign = m_hAlign;
+        if ( vAlign ) *vAlign = m_vAlign;
+    }
+    else if (m_defGridAttr != this)
+        m_defGridAttr->GetAlignment(hAlign, vAlign);
+    else {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+    }
+}
+
+
+wxGridCellRenderer* wxGridCellAttr::GetRenderer() const
+{
+    if (HasRenderer())
+        return m_renderer;
+    else if (m_defGridAttr != this)
+        return m_defGridAttr->GetRenderer();
+    else {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+        return NULL;
+    }
+}
+
+wxGridCellEditor* wxGridCellAttr::GetEditor() const
+{
+    if (HasEditor())
+        return m_editor;
+    else if (m_defGridAttr != this)
+        return m_defGridAttr->GetEditor();
+    else {
+        wxFAIL_MSG(wxT("Missing default cell attribute"));
+        return NULL;
+    }
+}
+
+// ----------------------------------------------------------------------------
+// wxGridCellAttrData
+// ----------------------------------------------------------------------------
+
+void wxGridCellAttrData::SetAttr(wxGridCellAttr *attr, int row, int col)
 {
     int n = FindIndex(row, col);
     if ( n == wxNOT_FOUND )
@@ -202,7 +607,7 @@ void wxGridCellAttrProviderData::SetAttr(const wxGridCellAttr *attr,
         if ( attr )
         {
             // change the attribute
-            m_attrs[(size_t)n].attr = *attr;
+            m_attrs[(size_t)n].attr = attr;
         }
         else
         {
@@ -210,24 +615,89 @@ void wxGridCellAttrProviderData::SetAttr(const wxGridCellAttr *attr,
             m_attrs.RemoveAt((size_t)n);
         }
     }
-
-    delete attr;
 }
 
-wxGridCellAttr *wxGridCellAttrProviderData::GetAttr(int row, int col) const
+wxGridCellAttr *wxGridCellAttrData::GetAttr(int row, int col) const
 {
     wxGridCellAttr *attr = (wxGridCellAttr *)NULL;
 
     int n = FindIndex(row, col);
     if ( n != wxNOT_FOUND )
     {
-        attr = new wxGridCellAttr(m_attrs[(size_t)n].attr);
+        attr = m_attrs[(size_t)n].attr;
+        attr->IncRef();
     }
 
     return attr;
 }
 
-int wxGridCellAttrProviderData::FindIndex(int row, int col) const
+void wxGridCellAttrData::UpdateAttrRows( size_t pos, int numRows )
+{
+    size_t count = m_attrs.GetCount();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        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--;
+               }
+           }
+        }
+    }
+}
+
+void wxGridCellAttrData::UpdateAttrCols( size_t pos, int numCols )
+{
+    size_t count = m_attrs.GetCount();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        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--;
+               }
+           }
+        }
+    }
+}
+
+int wxGridCellAttrData::FindIndex(int row, int col) const
 {
     size_t count = m_attrs.GetCount();
     for ( size_t n = 0; n < count; n++ )
@@ -242,6 +712,88 @@ int wxGridCellAttrProviderData::FindIndex(int row, int col) const
     return wxNOT_FOUND;
 }
 
+// ----------------------------------------------------------------------------
+// wxGridRowOrColAttrData
+// ----------------------------------------------------------------------------
+
+wxGridRowOrColAttrData::~wxGridRowOrColAttrData()
+{
+    size_t count = m_attrs.Count();
+    for ( size_t n = 0; n < count; n++ )
+    {
+        m_attrs[n]->DecRef();
+    }
+}
+
+wxGridCellAttr *wxGridRowOrColAttrData::GetAttr(int rowOrCol) const
+{
+    wxGridCellAttr *attr = (wxGridCellAttr *)NULL;
+
+    int n = m_rowsOrCols.Index(rowOrCol);
+    if ( n != wxNOT_FOUND )
+    {
+        attr = m_attrs[(size_t)n];
+        attr->IncRef();
+    }
+
+    return attr;
+}
+
+void wxGridRowOrColAttrData::SetAttr(wxGridCellAttr *attr, int rowOrCol)
+{
+    int n = m_rowsOrCols.Index(rowOrCol);
+    if ( n == wxNOT_FOUND )
+    {
+        // add the attribute
+        m_rowsOrCols.Add(rowOrCol);
+        m_attrs.Add(attr);
+    }
+    else
+    {
+        if ( attr )
+        {
+            // change the attribute
+            m_attrs[(size_t)n] = attr;
+        }
+        else
+        {
+            // remove this attribute
+            m_attrs[(size_t)n]->DecRef();
+            m_rowsOrCols.RemoveAt((size_t)n);
+            m_attrs.RemoveAt((size_t)n);
+        }
+    }
+}
+
+void wxGridRowOrColAttrData::UpdateAttrRowsOrCols( size_t pos, int numRowsOrCols )
+{
+    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--;
+               }
+           }
+        }
+    }
+}
+
 // ----------------------------------------------------------------------------
 // wxGridCellAttrProvider
 // ----------------------------------------------------------------------------
@@ -263,18 +815,78 @@ void wxGridCellAttrProvider::InitData()
 
 wxGridCellAttr *wxGridCellAttrProvider::GetAttr(int row, int col) const
 {
-    return m_data ? m_data->GetAttr(row, col) : (wxGridCellAttr *)NULL;
+    wxGridCellAttr *attr = (wxGridCellAttr *)NULL;
+    if ( m_data )
+    {
+        // first look for the attribute of this specific cell
+        attr = m_data->m_cellAttrs.GetAttr(row, col);
+
+        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);
+        }
+
+        if ( !attr )
+        {
+            // finally try the row attributes
+            attr = m_data->m_rowAttrs.GetAttr(row);
+        }
+    }
+
+    return attr;
 }
 
-void wxGridCellAttrProvider::SetAttr(const wxGridCellAttr *attr,
+void wxGridCellAttrProvider::SetAttr(wxGridCellAttr *attr,
                                      int row, int col)
 {
     if ( !m_data )
         InitData();
 
-    m_data->SetAttr(attr, row, col);
+    m_data->m_cellAttrs.SetAttr(attr, row, col);
+}
+
+void wxGridCellAttrProvider::SetRowAttr(wxGridCellAttr *attr, int row)
+{
+    if ( !m_data )
+        InitData();
+
+    m_data->m_rowAttrs.SetAttr(attr, row);
 }
 
+void wxGridCellAttrProvider::SetColAttr(wxGridCellAttr *attr, int col)
+{
+    if ( !m_data )
+        InitData();
+
+    m_data->m_colAttrs.SetAttr(attr, col);
+}
+
+void wxGridCellAttrProvider::UpdateAttrRows( size_t pos, int numRows )
+{
+    if ( m_data )
+    {
+        m_data->m_cellAttrs.UpdateAttrRows( pos, numRows );
+
+       m_data->m_rowAttrs.UpdateAttrRowsOrCols( pos, numRows );
+    }
+}
+
+void wxGridCellAttrProvider::UpdateAttrCols( size_t pos, int numCols )
+{
+    if ( m_data )
+    {
+        m_data->m_cellAttrs.UpdateAttrCols( pos, numCols );
+
+       m_data->m_colAttrs.UpdateAttrRowsOrCols( pos, numCols );
+    }
+}
+
+// ----------------------------------------------------------------------------
+// wxGridTableBase
+// ----------------------------------------------------------------------------
+
 //////////////////////////////////////////////////////////////////////
 //
 // Abstract base class for grid data (the model)
@@ -307,7 +919,7 @@ wxGridCellAttr *wxGridTableBase::GetAttr(int row, int col)
         return (wxGridCellAttr *)NULL;
 }
 
-void wxGridTableBase::SetAttr(const wxGridCellAttr *attr, int row, int col )
+void wxGridTableBase::SetAttr(wxGridCellAttr* attr, int row, int col)
 {
     if ( m_attrProvider )
     {
@@ -317,7 +929,51 @@ void wxGridTableBase::SetAttr(const wxGridCellAttr *attr, int row, int col )
     {
         // as we take ownership of the pointer and don't store it, we must
         // free it now
-        delete attr;
+        attr->SafeDecRef();
+    }
+}
+
+void wxGridTableBase::SetRowAttr(wxGridCellAttr *attr, int row)
+{
+    if ( m_attrProvider )
+    {
+        m_attrProvider->SetRowAttr(attr, row);
+    }
+    else
+    {
+        // as we take ownership of the pointer and don't store it, we must
+        // free it now
+        attr->SafeDecRef();
+    }
+}
+
+void wxGridTableBase::SetColAttr(wxGridCellAttr *attr, int col)
+{
+    if ( m_attrProvider )
+    {
+        m_attrProvider->SetColAttr(attr, col);
+    }
+    else
+    {
+        // as we take ownership of the pointer and don't store it, we must
+        // free it now
+        attr->SafeDecRef();
+    }
+}
+
+void wxGridTableBase::UpdateAttrRows( size_t pos, int numRows )
+{
+    if ( m_attrProvider )
+    {
+        m_attrProvider->UpdateAttrRows( pos, numRows );
+    }
+}
+
+void wxGridTableBase::UpdateAttrCols( size_t pos, int numCols )
+{
+    if ( m_attrProvider )
+    {
+        m_attrProvider->UpdateAttrCols( pos, numCols );
     }
 }
 
@@ -548,7 +1204,7 @@ bool wxGridStringTable::InsertRows( size_t pos, size_t numRows )
     {
         m_data.Insert( sa, row );
     }
-
+    UpdateAttrRows( pos, numRows );
     if ( GetView() )
     {
         wxGridTableMessage msg( this,
@@ -628,7 +1284,7 @@ bool wxGridStringTable::DeleteRows( size_t pos, size_t numRows )
             m_data.Remove( pos );
         }
     }
-
+    UpdateAttrRows( pos, -((int)numRows) );
     if ( GetView() )
     {
         wxGridTableMessage msg( this,
@@ -661,7 +1317,7 @@ bool wxGridStringTable::InsertCols( size_t pos, size_t numCols )
             m_data[row].Insert( wxEmptyString, col );
         }
     }
-
+    UpdateAttrCols( pos, numCols );
     if ( GetView() )
     {
         wxGridTableMessage msg( this,
@@ -745,7 +1401,7 @@ bool wxGridStringTable::DeleteCols( size_t pos, size_t numCols )
             }
         }
     }
-
+    UpdateAttrCols( pos, -((int)numCols) );
     if ( GetView() )
     {
         wxGridTableMessage msg( this,
@@ -778,157 +1434,48 @@ wxString wxGridStringTable::GetColLabelValue( int col )
     if ( col > (int)(m_colLabels.GetCount()) - 1 )
     {
         // using default label
-        //
-        return wxGridTableBase::GetColLabelValue( col );
-    }
-    else
-    {
-        return m_colLabels[ col ];
-    }
-}
-
-void wxGridStringTable::SetRowLabelValue( int row, const wxString& value )
-{
-    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) );
-        }
-    }
-
-    m_rowLabels[row] = value;
-}
-
-void wxGridStringTable::SetColLabelValue( int col, const wxString& value )
-{
-    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) );
-        }
-    }
-
-    m_colLabels[col] = value;
-}
-
-
-
-
-//////////////////////////////////////////////////////////////////////
-
-IMPLEMENT_DYNAMIC_CLASS( wxGridTextCtrl, wxTextCtrl )
-
-BEGIN_EVENT_TABLE( wxGridTextCtrl, wxTextCtrl )
-    EVT_KEY_DOWN( wxGridTextCtrl::OnKeyDown )
-END_EVENT_TABLE()
-
-
-wxGridTextCtrl::wxGridTextCtrl( wxWindow *par,
-                                wxGrid *grid,
-                                bool isCellControl,
-                                wxWindowID id,
-                                const wxString& value,
-                                const wxPoint& pos,
-                                const wxSize& size,
-                                long style )
-        : wxTextCtrl( par, id, value, pos, size, style )
-{
-    m_grid = grid;
-    m_isCellControl = isCellControl;
-}
-
-
-void wxGridTextCtrl::OnKeyDown( wxKeyEvent& event )
-{
-    switch ( event.KeyCode() )
-    {
-        case WXK_ESCAPE:
-            m_grid->SetEditControlValue( startValue );
-            SetInsertionPointEnd();
-            break;
-
-        case WXK_UP:
-        case WXK_DOWN:
-        case WXK_LEFT:
-        case WXK_RIGHT:
-        case WXK_PRIOR:
-        case WXK_NEXT:
-        case WXK_SPACE:
-            if ( m_isCellControl )
-            {
-                // send the event to the parent grid, skipping the
-                // event if nothing happens
-                //
-                event.Skip( m_grid->ProcessEvent( event ) );
-            }
-            else
-            {
-                // default text control response within the top edit
-                // control
-                //
-                event.Skip();
-            }
-            break;
-
-        case WXK_RETURN:
-            if ( m_isCellControl )
-            {
-                if ( !m_grid->ProcessEvent( event ) )
-                {
-#if defined(__WXMOTIF__) || defined(__WXGTK__)
-                    // wxMotif needs a little extra help...
-                    //
-                    int pos = GetInsertionPoint();
-                    wxString s( GetValue() );
-                    s = s.Left(pos) + "\n" + s.Mid(pos);
-                    SetValue(s);
-                    SetInsertionPoint( pos );
-#else
-                    // the other ports can handle a Return key press
-                    //
-                    event.Skip();
-#endif
-                }
-            }
-            break;
-
-        case WXK_HOME:
-        case WXK_END:
-            if ( m_isCellControl )
-            {
-                // send the event to the parent grid, skipping the
-                // event if nothing happens
-                //
-                event.Skip( m_grid->ProcessEvent( event ) );
-            }
-            else
-            {
-                // default text control response within the top edit
-                // control
-                //
-                event.Skip();
-            }
-            break;
+        //
+        return wxGridTableBase::GetColLabelValue( col );
+    }
+    else
+    {
+        return m_colLabels[ col ];
+    }
+}
 
-        default:
-            event.Skip();
+void wxGridStringTable::SetRowLabelValue( int row, const wxString& value )
+{
+    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) );
+        }
     }
+
+    m_rowLabels[row] = value;
 }
 
-void wxGridTextCtrl::SetStartValue( const wxString& s )
+void wxGridStringTable::SetColLabelValue( int col, const wxString& value )
 {
-    startValue = s;
-    wxTextCtrl::SetValue(s);
+    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) );
+        }
+    }
+
+    m_colLabels[col] = value;
 }
 
 
 
+//////////////////////////////////////////////////////////////////////
 //////////////////////////////////////////////////////////////////////
 
 IMPLEMENT_DYNAMIC_CLASS( wxGridRowLabelWindow, wxWindow )
@@ -1095,6 +1642,7 @@ 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()
 
 wxGridWindow::wxGridWindow( wxGrid *parent,
@@ -1106,7 +1654,6 @@ wxGridWindow::wxGridWindow( wxGrid *parent,
     m_owner = parent;
     m_rowLabelWin = rowLblWin;
     m_colLabelWin = colLblWin;
-
     SetBackgroundColour( "WHITE" );
 }
 
@@ -1151,16 +1698,22 @@ void wxGridWindow::OnKeyDown( wxKeyEvent& event )
     if ( !m_owner->ProcessEvent( event ) ) event.Skip();
 }
 
+void wxGridWindow::OnEraseBackground(wxEraseEvent&)
+{ }
+
+
 
 
 //////////////////////////////////////////////////////////////////////
 
+
 IMPLEMENT_DYNAMIC_CLASS( wxGrid, wxScrolledWindow )
 
 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()
 
 wxGrid::wxGrid( wxWindow *parent,
@@ -1177,7 +1730,19 @@ wxGrid::wxGrid( wxWindow *parent,
 
 wxGrid::~wxGrid()
 {
-    delete m_table;
+    ClearAttrCache();
+    m_defaultCellAttr->SafeDecRef();
+
+#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
+
+    if (m_ownTable)
+        delete m_table;
 }
 
 
@@ -1188,10 +1753,17 @@ wxGrid::~wxGrid()
 void wxGrid::Create()
 {
     m_created = FALSE;    // set to TRUE by CreateGrid
-    m_displayed = FALSE;  // set to TRUE by OnPaint
+    m_displayed = TRUE; // FALSE;  // set to TRUE by OnPaint
 
     m_table        = (wxGridTableBase *) NULL;
-    m_cellEditCtrl = (wxWindow *) NULL;
+    m_ownTable     = FALSE;
+
+    m_cellEditCtrlEnabled = FALSE;
+
+    m_defaultCellAttr = new wxGridCellAttr;
+    m_defaultCellAttr->SetDefAttr(m_defaultCellAttr);
+    // RD:  Should we fill the default attrs now or is waiting until Init() okay?
+
 
     m_numRows = 0;
     m_numCols = 0;
@@ -1230,7 +1802,7 @@ bool wxGrid::CreateGrid( int numRows, int numCols )
 {
     if ( m_created )
     {
-        wxFAIL_MSG( wxT("wxGrid::CreateGrid called more than once") );
+        wxFAIL_MSG( wxT("wxGrid::CreateGrid or wxGrid::SetTable called more than once") );
         return FALSE;
     }
     else
@@ -1240,6 +1812,35 @@ bool wxGrid::CreateGrid( int numRows, int numCols )
 
         m_table = new wxGridStringTable( m_numRows, m_numCols );
         m_table->SetView( this );
+        m_ownTable = TRUE;
+        Init();
+        m_created = TRUE;
+    }
+
+    return m_created;
+}
+
+bool wxGrid::SetTable( wxGridTableBase *table, bool takeOwnership )
+{
+    if ( m_created )
+    {
+        // 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?
+
+        wxFAIL_MSG( wxT("wxGrid::CreateGrid or wxGrid::SetTable called more than once") );
+        return FALSE;
+    }
+    else
+    {
+        m_numRows = table->GetNumberRows();
+        m_numCols = table->GetNumberCols();
+
+        m_table = table;
+        m_table->SetView( this );
+        if (takeOwnership)
+            m_ownTable = TRUE;
         Init();
         m_created = TRUE;
     }
@@ -1272,6 +1873,9 @@ void wxGrid::Init()
 
     m_labelTextColour = wxColour( _T("BLACK") );
 
+    // init attr cache
+    m_attrCache.row = -1;
+
     // TODO: something better than this ?
     //
     m_labelFont = this->GetFont();
@@ -1312,12 +1916,16 @@ void wxGrid::Init()
         m_colRights.Add( colRight );
     }
 
-    // TODO: improve this by using wxSystemSettings?
-    //
-    m_defaultCellFont = GetFont();
+    // Set default cell attributes
+    m_defaultCellAttr->SetFont(GetFont());
+    m_defaultCellAttr->SetAlignment(wxLEFT, wxTOP);
+    m_defaultCellAttr->SetRenderer(new wxGridCellStringRenderer);
+    m_defaultCellAttr->SetEditor(new wxGridCellTextEditor);
+    m_defaultCellAttr->SetTextColour(
+        wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOWTEXT));
+    m_defaultCellAttr->SetBackgroundColour(
+        wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
 
-    m_defaultCellHAlign = wxLEFT;
-    m_defaultCellVAlign = wxTOP;
 
     m_gridLineColour = wxColour( 128, 128, 255 );
     m_gridLinesEnabled = TRUE;
@@ -1327,6 +1935,9 @@ void wxGrid::Init()
     m_dragLastPos  = -1;
     m_dragRowOrCol = -1;
     m_isDragging = FALSE;
+    m_startDragPos = wxDefaultPosition;
+
+    m_waitForSlowClick = FALSE;
 
     m_rowResizeCursor = wxCursor( wxCURSOR_SIZENS );
     m_colResizeCursor = wxCursor( wxCURSOR_SIZEWE );
@@ -1335,29 +1946,14 @@ void wxGrid::Init()
 
     m_selectedTopLeft = wxGridNoCellCoords;
     m_selectedBottomRight = wxGridNoCellCoords;
+    m_selectionBackground = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHT);
+    m_selectionForeground = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
 
     m_editable = TRUE;  // default for whole grid
 
     m_inOnKeyDown = FALSE;
     m_batchCount = 0;
 
-    // TODO: extend this to other types of controls
-    //
-    m_cellEditCtrl = new wxGridTextCtrl( m_gridWin,
-                                         this,
-                                         TRUE,
-                                         wxGRID_CELLCTRL,
-                                         "",
-                                         wxPoint(1,1),
-                                         wxSize(1,1)
-#if defined(__WXMSW__)
-                                         , wxTE_MULTILINE | wxTE_NO_VSCROLL
-#endif
-                                         );
-
-    m_cellEditCtrl->Show( FALSE );
-    m_cellEditCtrlEnabled = TRUE;
-    m_editCtrlType = wxGRID_TEXTCTRL;
 }
 
 
@@ -1717,7 +2313,7 @@ void wxGrid::CalcCellsExposed( wxRegion& reg )
         int colLeft, rowTop;
         for ( row = 0;  row < m_numRows;  row++ )
         {
-            if ( m_rowBottoms[row] < top ) continue;
+            if ( m_rowBottoms[row] <= top ) continue;
 
             rowTop = m_rowBottoms[row] - m_rowHeights[row];
             if ( rowTop > bottom ) break;
@@ -1726,7 +2322,7 @@ void wxGrid::CalcCellsExposed( wxRegion& reg )
 
             for ( col = 0;  col < m_numCols;  col++ )
             {
-                if ( m_colRights[col] < left ) continue;
+                if ( m_colRights[col] <= left ) continue;
 
                 colLeft = m_colRights[col] - m_colWidths[col];
                 if ( colLeft > right ) break;
@@ -1763,6 +2359,10 @@ void wxGrid::ProcessRowLabelMouseEvent( wxMouseEvent& event )
 
                     wxClientDC dc( m_gridWin );
                     PrepareDC( dc );
+                    y = wxMax( y,
+                               m_rowBottoms[m_dragRowOrCol] -
+                               m_rowHeights[m_dragRowOrCol] +
+                               WXGRID_MIN_ROW_HEIGHT );
                     dc.SetLogicalFunction(wxINVERT);
                     if ( m_dragLastPos >= 0 )
                     {
@@ -1925,6 +2525,10 @@ void wxGrid::ProcessColLabelMouseEvent( wxMouseEvent& event )
 
                     wxClientDC dc( m_gridWin );
                     PrepareDC( dc );
+                    x = wxMax( x,
+                               m_colRights[m_dragRowOrCol] -
+                               m_colWidths[m_dragRowOrCol] +
+                               WXGRID_MIN_COL_WIDTH );
                     dc.SetLogicalFunction(wxINVERT);
                     if ( m_dragLastPos >= 0 )
                     {
@@ -2114,7 +2718,8 @@ void wxGrid::ChangeCursorMode(CursorMode mode,
         _T("SELECT_COL")
     };
 
-    wxLogDebug(_T("wxGrid cursor mode (mouse capture for %s): %s -> %s"),
+    wxLogTrace(_T("grid"),
+               _T("wxGrid cursor mode (mouse capture for %s): %s -> %s"),
                win == m_colLabelWin ? _T("colLabelWin")
                                     : win ? _T("rowLabelWin")
                                           : _T("gridWin"),
@@ -2174,6 +2779,19 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
 
     if ( event.Dragging() )
     {
+        //wxLogDebug("pos(%d, %d) coords(%d, %d)", pos.x, pos.y, coords.GetRow(), coords.GetCol());
+
+        // Don't start doing anything until the mouse has been drug at
+        // least 3 pixels in any direction...
+        if (! m_isDragging) {
+            if (m_startDragPos == wxDefaultPosition) {
+                m_startDragPos = pos;
+                return;
+            }
+            if (abs(m_startDragPos.x - pos.x) < 4 && abs(m_startDragPos.y - pos.y) < 4)
+                return;
+        }
+
         m_isDragging = TRUE;
         if ( m_cursorMode == WXGRID_CURSOR_SELECT_CELL )
         {
@@ -2181,6 +2799,13 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
             // won't interfer with drag-shrinking.
             if ( IsCellEditControlEnabled() )
                 HideCellEditControl();
+
+            // Have we captured the mouse yet?
+            if (! m_winCapture) {
+                m_winCapture = m_gridWin;
+                m_winCapture->CaptureMouse();
+            }
+
             if ( coords != wxGridNoCellCoords )
             {
                 if ( !IsSelection() )
@@ -2191,6 +2816,12 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
                 {
                     SelectBlock( m_currentCellCoords, coords );
                 }
+
+                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 )
@@ -2201,6 +2832,10 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
 
             wxClientDC dc( m_gridWin );
             PrepareDC( dc );
+           y = wxMax( y,
+                      m_rowBottoms[m_dragRowOrCol] -
+                      m_rowHeights[m_dragRowOrCol] +
+                      WXGRID_MIN_ROW_HEIGHT );
             dc.SetLogicalFunction(wxINVERT);
             if ( m_dragLastPos >= 0 )
             {
@@ -2217,6 +2852,9 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
 
             wxClientDC dc( m_gridWin );
             PrepareDC( dc );
+           x = wxMax( x,
+                      m_colRights[m_dragRowOrCol] -
+                      m_colWidths[m_dragRowOrCol] + WXGRID_MIN_COL_WIDTH );
             dc.SetLogicalFunction(wxINVERT);
             if ( m_dragLastPos >= 0 )
             {
@@ -2230,6 +2868,8 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
     }
 
     m_isDragging = FALSE;
+    m_startDragPos = wxDefaultPosition;
+
 
     if ( coords != wxGridNoCellCoords )
     {
@@ -2249,6 +2889,7 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
         //
         if ( event.LeftDown() )
         {
+            EnableCellEditControl( FALSE );
             if ( event.ShiftDown() )
             {
                 SelectBlock( m_currentCellCoords, coords );
@@ -2262,7 +2903,18 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
                                  event ) )
                 {
                     MakeCellVisible( coords );
-                    SetCurrentCell( coords );
+
+                    // if this is the second click on this cell then start
+                    // the edit control
+                    if (m_waitForSlowClick && coords == m_currentCellCoords) {
+                        EnableCellEditControl(TRUE);
+                        ShowCellEditControl();
+                        m_waitForSlowClick = FALSE;
+                    }
+                    else {
+                        SetCurrentCell( coords );
+                        m_waitForSlowClick = TRUE;
+                    }
                 }
             }
         }
@@ -2272,6 +2924,7 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
         //
         else if ( event.LeftDClick() )
         {
+            EnableCellEditControl( FALSE );
             if ( XToEdgeOfCol(x) < 0  &&  YToEdgeOfRow(y) < 0 )
             {
                 SendEvent( EVT_GRID_CELL_LEFT_DCLICK,
@@ -2290,6 +2943,10 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
             {
                 if ( IsSelection() )
                 {
+                    if (m_winCapture) {
+                        m_winCapture->ReleaseMouse();
+                        m_winCapture = NULL;
+                    }
                     SendEvent( EVT_GRID_RANGE_SELECT, -1, -1, event );
                 }
 
@@ -2327,6 +2984,7 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
         //
         else if ( event.RightDown() )
         {
+            EnableCellEditControl( FALSE );
             if ( !SendEvent( EVT_GRID_CELL_RIGHT_CLICK,
                              coords.GetRow(),
                              coords.GetCol(),
@@ -2341,6 +2999,7 @@ void wxGrid::ProcessGridCellMouseEvent( wxMouseEvent& event )
         //
         else if ( event.RightDClick() )
         {
+            EnableCellEditControl( FALSE );
             if ( !SendEvent( EVT_GRID_CELL_RIGHT_DCLICK,
                              coords.GetRow(),
                              coords.GetCol(),
@@ -2867,7 +3526,7 @@ void wxGrid::OnKeyDown( wxKeyEvent& event )
     {
         // shouldn't be here - we are going round in circles...
         //
-        wxFAIL_MSG( wxT("wxGrid::OnKeyDown called while alread active") );
+        wxFAIL_MSG( wxT("wxGrid::OnKeyDown called while already active") );
     }
 
     m_inOnKeyDown = TRUE;
@@ -2880,6 +3539,12 @@ void wxGrid::OnKeyDown( wxKeyEvent& event )
 
     if ( !parent->GetEventHandler()->ProcessEvent( keyEvt ) )
     {
+
+        // 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() )
@@ -2928,17 +3593,6 @@ void wxGrid::OnKeyDown( wxKeyEvent& event )
                 }
                 break;
 
-            case WXK_SPACE:
-                if ( !IsEditable() )
-                {
-                    MoveCursorRight();
-                }
-                else
-                {
-                    event.Skip();
-                }
-                break;
-
             case WXK_RETURN:
                 if ( event.ControlDown() )
                 {
@@ -2950,6 +3604,13 @@ void wxGrid::OnKeyDown( wxKeyEvent& event )
                 }
                 break;
 
+            case WXK_TAB:
+                if (event.ShiftDown())
+                    MoveCursorLeft();
+                else
+                    MoveCursorRight();
+                break;
+
             case WXK_HOME:
                 if ( event.ControlDown() )
                 {
@@ -2982,13 +3643,31 @@ void wxGrid::OnKeyDown( wxKeyEvent& event )
                 MovePageDown();
                 break;
 
+            // We don't want these keys to trigger the edit control, any others?
+            case WXK_SHIFT:
+            case WXK_ALT:
+            case WXK_CONTROL:
+            case WXK_CAPITAL:
+                event.Skip();
+                break;
+
+            case WXK_SPACE:
+                if ( !IsEditable() )
+                {
+                    MoveCursorRight();
+                    break;
+                }
+                // Otherwise fall through to default
+
             default:
                 // now try the cell edit control
                 //
-                if ( IsCellEditControlEnabled() )
-                {
-                    event.SetEventObject( m_cellEditCtrl );
-                    m_cellEditCtrl->GetEventHandler()->ProcessEvent( event );
+                if ( !IsCellEditControlEnabled() )
+                    EnableCellEditControl( TRUE );
+                if (IsCellEditControlEnabled()) {
+                    wxGridCellAttr* attr = GetCellAttr(m_currentCellCoords);
+                    attr->GetEditor()->StartingKey(event);
+                    attr->DecRef();
                 }
                 break;
         }
@@ -2998,6 +3677,12 @@ void wxGrid::OnKeyDown( wxKeyEvent& event )
 }
 
 
+void wxGrid::OnEraseBackground(wxEraseEvent&)
+{ }
+
+
+
+
 void wxGrid::SetCurrentCell( const wxGridCellCoords& coords )
 {
     if ( SendEvent( EVT_GRID_SELECT_CELL, coords.GetRow(), coords.GetCol() ) )
@@ -3011,6 +3696,12 @@ void wxGrid::SetCurrentCell( const wxGridCellCoords& coords )
     {
         HideCellEditControl();
         SaveEditControlValue();
+        EnableCellEditControl(FALSE);
+
+        // Clear the old current cell highlight
+        wxRect r = BlockToDeviceRect(m_currentCellCoords, m_currentCellCoords);
+       m_currentCellCoords = coords;   // Otherwise refresh redraws the highlight!
+        m_gridWin->Refresh( FALSE, &r );
     }
 
     m_currentCellCoords = coords;
@@ -3019,7 +3710,9 @@ void wxGrid::SetCurrentCell( const wxGridCellCoords& coords )
 
     if ( m_displayed )
     {
-        ShowCellEditControl();
+        wxClientDC dc(m_gridWin);
+        PrepareDC(dc);
+        DrawCellHighlight(dc);
 
         if ( IsSelection() )
         {
@@ -3091,23 +3784,55 @@ void wxGrid::DrawGridCellArea( wxDC& dc )
 
 void wxGrid::DrawCell( wxDC& dc, const wxGridCellCoords& coords )
 {
-    if ( m_colWidths[coords.GetCol()] <=0  ||
-         m_rowHeights[coords.GetRow()] <= 0 ) return;
+    int row = coords.GetRow();
+    int col = coords.GetCol();
+
+    if ( m_colWidths[col] <= 0 || m_rowHeights[row] <= 0 )
+        return;
 
+    // we draw the cell border ourselves
 #if !WXGRID_DRAW_LINES
     if ( m_gridLinesEnabled )
         DrawCellBorder( dc, coords );
 #endif
 
-    DrawCellBackground( dc, coords );
+    // but all the rest is drawn by the cell renderer and hence may be
+    // customized
+    wxRect rect;
+    rect.x = m_colRights[col] - m_colWidths[col];
+    rect.y = m_rowBottoms[row] - m_rowHeights[row];
+    rect.width = m_colWidths[col]-1;
+    rect.height = m_rowHeights[row]-1;
+
+    wxGridCellAttr* attr = GetCellAttr(row, col);
+    attr->GetRenderer()->Draw(*this, *attr, dc, rect, row, col, IsInSelection(coords));
+    attr->DecRef();
 
-    // TODO: separate functions here for different kinds of cells ?
-    // e.g. text, image
-    //
-    DrawCellValue( dc, coords );
+    if (m_currentCellCoords == coords)
+        DrawCellHighlight(dc);
 }
 
 
+void wxGrid::DrawCellHighlight( wxDC& dc )
+{
+    int row = m_currentCellCoords.GetRow();
+    int col = m_currentCellCoords.GetCol();
+
+    if ( m_colWidths[col] <= 0 || m_rowHeights[row] <= 0 )
+        return;
+
+    wxRect rect;
+    rect.x = m_colRights[col] - m_colWidths[col];
+    rect.y = m_rowBottoms[row] - m_rowHeights[row];
+    rect.width = m_colWidths[col] - 1;
+    rect.height = m_rowHeights[row] - 1;
+
+    dc.SetPen(wxPen(m_gridLineColour, 3, wxSOLID));
+    dc.SetBrush(*wxTRANSPARENT_BRUSH);
+
+    dc.DrawRectangle(rect);
+}
+
 void wxGrid::DrawCellBorder( wxDC& dc, const wxGridCellCoords& coords )
 {
     if ( m_colWidths[coords.GetCol()] <=0  ||
@@ -3129,74 +3854,6 @@ void wxGrid::DrawCellBorder( wxDC& dc, const wxGridCellCoords& coords )
 }
 
 
-void wxGrid::DrawCellBackground( wxDC& dc, const wxGridCellCoords& coords )
-{
-    if ( m_colWidths[coords.GetCol()] <=0  ||
-         m_rowHeights[coords.GetRow()] <= 0 ) return;
-
-    int row = coords.GetRow();
-    int col = coords.GetCol();
-
-    dc.SetBackgroundMode( wxSOLID );
-
-    if ( IsInSelection( coords ) )
-    {
-        // TODO: improve this
-        //
-        dc.SetBrush( *wxBLACK_BRUSH );
-    }
-    else
-    {
-        dc.SetBrush( wxBrush(GetCellBackgroundColour(row, col), wxSOLID) );
-    }
-
-    dc.SetPen( *wxTRANSPARENT_PEN );
-
-    dc.DrawRectangle( m_colRights[col] - m_colWidths[col] + 1,
-                      m_rowBottoms[row] - m_rowHeights[row] + 1,
-                      m_colWidths[col]-1,
-                      m_rowHeights[row]-1 );
-}
-
-
-void wxGrid::DrawCellValue( wxDC& dc, const wxGridCellCoords& coords )
-{
-    if ( m_colWidths[coords.GetCol()] <=0  ||
-         m_rowHeights[coords.GetRow()] <= 0 ) return;
-
-    int row = coords.GetRow();
-    int col = coords.GetCol();
-
-    dc.SetBackgroundMode( wxTRANSPARENT );
-
-    if ( IsInSelection( row, col ) )
-    {
-        // TODO: improve this
-        //
-        dc.SetTextBackground( wxColour(0, 0, 0) );
-        dc.SetTextForeground( wxColour(255, 255, 255) );
-    }
-    else
-    {
-        dc.SetTextBackground( GetCellBackgroundColour(row, col) );
-        dc.SetTextForeground( GetCellTextColour(row, col) );
-    }
-    dc.SetFont( GetCellFont(row, col) );
-
-    int hAlign, vAlign;
-    GetCellAlignment( row, col, &hAlign, &vAlign );
-
-    wxRect rect;
-    rect.SetX( m_colRights[col] - m_colWidths[col] + 2 );
-    rect.SetY( m_rowBottoms[row] - m_rowHeights[row] + 2 );
-    rect.SetWidth( m_colWidths[col] - 4 );
-    rect.SetHeight( m_rowHeights[row] - 4 );
-
-    DrawTextRectangle( dc, GetCellValue( row, col ), rect, hAlign, vAlign );
-}
-
-
-
 // TODO: remove this ???
 // This is used to redraw all grid lines e.g. when the grid line colour
 // has been changed
@@ -3237,13 +3894,13 @@ void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & reg )
     int i;
     for ( i = 0; i < m_numRows; i++ )
     {
-        if ( m_rowBottoms[i] > bottom )
+        if ( m_rowBottoms[i]-1 > bottom )
         {
             break;
         }
-        else if ( m_rowBottoms[i] >= top )
+        else if ( m_rowBottoms[i]-1 >= top )
         {
-            dc.DrawLine( left, m_rowBottoms[i], right, m_rowBottoms[i] );
+            dc.DrawLine( left, m_rowBottoms[i]-1, right, m_rowBottoms[i]-1 );
         }
     }
 
@@ -3252,13 +3909,13 @@ void wxGrid::DrawAllGridLines( wxDC& dc, const wxRegion & reg )
     //
     for ( i = 0; i < m_numCols; i++ )
     {
-        if ( m_colRights[i] > right )
+        if ( m_colRights[i]-1 > right )
         {
             break;
         }
-        else if ( m_colRights[i] >= left )
+        else if ( m_colRights[i]-1 >= left )
         {
-            dc.DrawLine( m_colRights[i], top, m_colRights[i], bottom );
+            dc.DrawLine( m_colRights[i]-1, top, m_colRights[i]-1, bottom );
         }
     }
 }
@@ -3491,26 +4148,24 @@ void wxGrid::EnableEditing( bool edit )
     {
         m_editable = edit;
 
-        // TODO: extend this for other edit control types
-        //
-        if ( m_editCtrlType == wxGRID_TEXTCTRL )
-        {
-            ((wxTextCtrl *)m_cellEditCtrl)->SetEditable( m_editable );
-        }
+        EnableCellEditControl(m_editable);
     }
 }
 
 
-#if 0  // disabled for the moment - the cell control is always active
 void wxGrid::EnableCellEditControl( bool enable )
 {
-    if ( m_cellEditCtrl &&
-         enable != m_cellEditCtrlEnabled )
-    {
-        m_cellEditCtrlEnabled = enable;
+    if (! m_editable)
+        return;
 
-        if ( m_cellEditCtrlEnabled )
+    if ( m_currentCellCoords == wxGridNoCellCoords )
+        SetCurrentCell( 0, 0 );
+
+    if ( enable != m_cellEditCtrlEnabled )
+    {
+        if ( enable )
         {
+            m_cellEditCtrlEnabled = enable;
             SetEditControlValue();
             ShowCellEditControl();
         }
@@ -3518,16 +4173,14 @@ void wxGrid::EnableCellEditControl( bool enable )
         {
             HideCellEditControl();
             SaveEditControlValue();
+            m_cellEditCtrlEnabled = enable;
         }
     }
 }
-#endif
 
 
 void wxGrid::ShowCellEditControl()
 {
-    wxRect rect;
-
     if ( IsCellEditControlEnabled() )
     {
         if ( !IsVisible( m_currentCellCoords ) )
@@ -3536,14 +4189,16 @@ void wxGrid::ShowCellEditControl()
         }
         else
         {
-            rect = CellToRect( m_currentCellCoords );
+            wxRect rect = CellToRect( m_currentCellCoords );
+            int row = m_currentCellCoords.GetRow();
+            int col = m_currentCellCoords.GetCol();
 
             // convert to scrolled coords
             //
             int left, top, right, bottom;
             CalcScrolledPosition( rect.GetLeft(), rect.GetTop(), &left, &top );
             CalcScrolledPosition( rect.GetRight(), rect.GetBottom(), &right, &bottom );
-
+            left--; top--; right--; bottom--;   // cell is shifted by one pixel
             int cw, ch;
             m_gridWin->GetClientSize( &cw, &ch );
 
@@ -3552,8 +4207,7 @@ void wxGrid::ShowCellEditControl()
             //
             int extra;
 #if defined(__WXMOTIF__)
-            if ( m_currentCellCoords.GetRow() == 0  ||
-                 m_currentCellCoords.GetCol() == 0 )
+            if ( row == 0  || col == 0 )
             {
                 extra = 2;
             }
@@ -3562,8 +4216,7 @@ void wxGrid::ShowCellEditControl()
                 extra = 4;
             }
 #else
-            if ( m_currentCellCoords.GetRow() == 0  ||
-                 m_currentCellCoords.GetCol() == 0 )
+            if ( row == 0  || col == 0 )
             {
                 extra = 1;
             }
@@ -3589,33 +4242,18 @@ void wxGrid::ShowCellEditControl()
             rect.SetBottom( rect.GetBottom() + 2*extra );
 #endif
 
-            m_cellEditCtrl->SetSize( rect );
-            m_cellEditCtrl->Show( TRUE );
-
-            switch ( m_editCtrlType )
-            {
-                case wxGRID_TEXTCTRL:
-                    ((wxTextCtrl *) m_cellEditCtrl)->SetInsertionPointEnd();
-                    break;
-
-                case wxGRID_CHECKBOX:
-                    // TODO: anything ???
-                    //
-                    break;
-
-                case wxGRID_CHOICE:
-                    // TODO: anything ???
-                    //
-                    break;
-
-                case wxGRID_COMBOBOX:
-                    // TODO: anything ???
-                    //
-                    break;
+            wxGridCellAttr*   attr = GetCellAttr(row, col);
+            wxGridCellEditor* editor = attr->GetEditor();
+            if (! editor->IsCreated()) {
+                editor->Create(m_gridWin, -1,
+                               new wxGridCellEditorEvtHandler(this, editor));
             }
 
-            m_cellEditCtrl->SetFocus();
-        }
+            editor->SetSize( rect );
+            editor->Show( TRUE );
+            editor->BeginEdit(row, col, this, attr);
+            attr->DecRef();
+         }
     }
 }
 
@@ -3624,93 +4262,36 @@ void wxGrid::HideCellEditControl()
 {
     if ( IsCellEditControlEnabled() )
     {
-        m_cellEditCtrl->Show( FALSE );
+        int row = m_currentCellCoords.GetRow();
+        int col = m_currentCellCoords.GetCol();
+
+        wxGridCellAttr*   attr = GetCellAttr(row, col);
+        attr->GetEditor()->Show( FALSE );
+        attr->DecRef();
+        m_gridWin->SetFocus();
     }
 }
 
 
 void wxGrid::SetEditControlValue( const wxString& value )
 {
-    if ( m_table )
-    {
-        wxString s;
-        if ( !value )
-            s = GetCellValue(m_currentCellCoords);
-        else
-            s = value;
-
-        if ( IsCellEditControlEnabled() )
-        {
-            switch ( m_editCtrlType )
-            {
-                case wxGRID_TEXTCTRL:
-                    ((wxGridTextCtrl *)m_cellEditCtrl)->SetStartValue(s);
-                    break;
-
-                case wxGRID_CHECKBOX:
-                    // TODO: implement this
-                    //
-                    break;
-
-                case wxGRID_CHOICE:
-                    // TODO: implement this
-                    //
-                    break;
-
-                case wxGRID_COMBOBOX:
-                    // TODO: implement this
-                    //
-                    break;
-            }
-        }
-    }
+    // RD: The new Editors get the value from the table themselves now.  This
+    // method can probably be removed...
 }
 
 
 void wxGrid::SaveEditControlValue()
 {
-    if ( m_table )
-    {
-        wxWindow *ctrl = (wxWindow *)NULL;
-
-        if ( IsCellEditControlEnabled() )
-        {
-            ctrl = m_cellEditCtrl;
-        }
-        else
-        {
-            return;
-        }
-
-        bool valueChanged = FALSE;
-
-        switch ( m_editCtrlType )
-        {
-            case wxGRID_TEXTCTRL:
-                valueChanged = (((wxGridTextCtrl *)ctrl)->GetValue() !=
-                                ((wxGridTextCtrl *)ctrl)->GetStartValue());
-                SetCellValue( m_currentCellCoords,
-                              ((wxTextCtrl *) ctrl)->GetValue() );
-                break;
-
-            case wxGRID_CHECKBOX:
-                // TODO: implement this
-                //
-                break;
-
-            case wxGRID_CHOICE:
-                // TODO: implement this
-                //
-                break;
+    if (IsCellEditControlEnabled()) {
+        int row = m_currentCellCoords.GetRow();
+        int col = m_currentCellCoords.GetCol();
 
-            case wxGRID_COMBOBOX:
-                // TODO: implement this
-                //
-                break;
-        }
+        wxGridCellAttr*   attr = GetCellAttr(row, col);
+        bool changed = attr->GetEditor()->EndEdit(row, col, TRUE, this, attr);
 
-        if ( valueChanged )
-        {
+        attr->DecRef();
+
+        if (changed) {
             SendEvent( EVT_GRID_CELL_CHANGE,
                        m_currentCellCoords.GetRow(),
                        m_currentCellCoords.GetCol() );
@@ -3751,7 +4332,7 @@ int wxGrid::YToRow( int y )
         if ( y < m_rowBottoms[i] ) return i;
     }
 
-    return -1;
+    return m_numRows; //-1;
 }
 
 
@@ -3764,7 +4345,7 @@ int wxGrid::XToCol( int x )
         if ( x < m_colRights[i] ) return i;
     }
 
-    return -1;
+    return m_numCols; //-1;
 }
 
 
@@ -4565,89 +5146,334 @@ int wxGrid::GetColSize( int col )
     return m_colWidths[col];
 }
 
-wxColour wxGrid::GetDefaultCellBackgroundColour()
+// ============================================================================
+// 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
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// setting default attributes
+// ----------------------------------------------------------------------------
+
+void wxGrid::SetDefaultCellBackgroundColour( const wxColour& col )
 {
-    return m_gridWin->GetBackgroundColour();
+    m_defaultCellAttr->SetBackgroundColour(col);
 }
 
-// TODO VZ: this must be optimized to allow only retrieveing attr once!
+void wxGrid::SetDefaultCellTextColour( const wxColour& col )
+{
+    m_defaultCellAttr->SetTextColour(col);
+}
 
-wxColour wxGrid::GetCellBackgroundColour(int row, int col)
+void wxGrid::SetDefaultCellAlignment( int horiz, int vert )
+{
+    m_defaultCellAttr->SetAlignment(horiz, vert);
+}
+
+void wxGrid::SetDefaultCellFont( const wxFont& font )
+{
+    m_defaultCellAttr->SetFont(font);
+}
+
+void wxGrid::SetDefaultRenderer(wxGridCellRenderer *renderer)
 {
-    wxGridCellAttr *attr = m_table ? m_table->GetAttr(row, col) : NULL;
+    m_defaultCellAttr->SetRenderer(renderer);
+}
 
-    wxColour colour;
-    if ( attr && attr->HasBackgroundColour() )
-        colour = attr->GetBackgroundColour();
-    else
-        colour = GetDefaultCellBackgroundColour();
+void wxGrid::SetDefaultEditor(wxGridCellEditor *editor)
+{
+    m_defaultCellAttr->SetEditor(editor);
+}
 
-    delete attr;
+// ----------------------------------------------------------------------------
+// access to the default attrbiutes
+// ----------------------------------------------------------------------------
 
-    return colour;
+wxColour wxGrid::GetDefaultCellBackgroundColour()
+{
+    return m_defaultCellAttr->GetBackgroundColour();
 }
 
 wxColour wxGrid::GetDefaultCellTextColour()
 {
-    return m_gridWin->GetForegroundColour();
+    return m_defaultCellAttr->GetTextColour();
 }
 
-wxColour wxGrid::GetCellTextColour( int row, int col )
+wxFont wxGrid::GetDefaultCellFont()
 {
-    wxGridCellAttr *attr = m_table ? m_table->GetAttr(row, col) : NULL;
+    return m_defaultCellAttr->GetFont();
+}
 
-    wxColour colour;
-    if ( attr && attr->HasTextColour() )
-        colour = attr->GetTextColour();
-    else
-        colour = GetDefaultCellTextColour();
+void wxGrid::GetDefaultCellAlignment( int *horiz, int *vert )
+{
+    m_defaultCellAttr->GetAlignment(horiz, vert);
+}
 
-    delete attr;
+wxGridCellRenderer *wxGrid::GetDefaultRenderer() const
+{
+    return m_defaultCellAttr->GetRenderer();
+}
 
-    return colour;
+wxGridCellEditor *wxGrid::GetDefaultEditor() const
+{
+    return m_defaultCellAttr->GetEditor();
 }
 
+// ----------------------------------------------------------------------------
+// access to cell attributes
+// ----------------------------------------------------------------------------
 
-wxFont wxGrid::GetDefaultCellFont()
+wxColour wxGrid::GetCellBackgroundColour(int row, int col)
+{
+    wxGridCellAttr *attr = GetCellAttr(row, col);
+    wxColour colour = attr->GetBackgroundColour();
+    attr->SafeDecRef();
+    return colour;
+}
+
+wxColour wxGrid::GetCellTextColour( int row, int col )
 {
-    return m_defaultCellFont;
+    wxGridCellAttr *attr = GetCellAttr(row, col);
+    wxColour colour = attr->GetTextColour();
+    attr->SafeDecRef();
+    return colour;
 }
 
 wxFont wxGrid::GetCellFont( int row, int col )
 {
-    wxGridCellAttr *attr = m_table ? m_table->GetAttr(row, col) : NULL;
+    wxGridCellAttr *attr = GetCellAttr(row, col);
+    wxFont font = attr->GetFont();
+    attr->SafeDecRef();
+    return font;
+}
+
+void wxGrid::GetCellAlignment( int row, int col, int *horiz, int *vert )
+{
+    wxGridCellAttr *attr = GetCellAttr(row, col);
+    attr->GetAlignment(horiz, vert);
+    attr->SafeDecRef();
+}
+
+wxGridCellRenderer* wxGrid::GetCellRenderer(int row, int col)
+{
+    wxGridCellAttr* attr = GetCellAttr(row, col);
+    wxGridCellRenderer* renderer = attr->GetRenderer();
+    attr->DecRef();
+    return renderer;
+}
+
+wxGridCellEditor* wxGrid::GetCellEditor(int row, int col)
+{
+    wxGridCellAttr* attr = GetCellAttr(row, col);
+    wxGridCellEditor* editor = attr->GetEditor();
+    attr->DecRef();
+    return editor;
+}
+
+// ----------------------------------------------------------------------------
+// attribute support: cache, automatic provider creation, ...
+// ----------------------------------------------------------------------------
+
+bool wxGrid::CanHaveAttributes()
+{
+    if ( !m_table )
+    {
+        return FALSE;
+    }
+
+    // RD:  Maybe m_table->CanHaveAttributes() would be better in case the
+    //      table is providing the attributes itself???  In which case
+    //      I don't think the grid should create a Provider object for the
+    //      table but the table should be smart enough to do that on its own.
+    if ( !m_table->GetAttrProvider() )
+    {
+        // use the default attr provider by default
+        // (another choice would be to just return FALSE thus forcing the user
+        // to it himself)
+        m_table->SetAttrProvider(new wxGridCellAttrProvider);
+    }
+
+    return TRUE;
+}
+
+void wxGrid::ClearAttrCache()
+{
+    if ( m_attrCache.row != -1 )
+    {
+        m_attrCache.attr->SafeDecRef();
+        m_attrCache.row = -1;
+    }
+}
+
+void wxGrid::CacheAttr(int row, int col, wxGridCellAttr *attr) const
+{
+    wxGrid *self = (wxGrid *)this;  // const_cast
+
+    self->ClearAttrCache();
+    self->m_attrCache.row = row;
+    self->m_attrCache.col = col;
+    self->m_attrCache.attr = attr;
+    attr->SafeIncRef();
+}
+
+bool wxGrid::LookupAttr(int row, int col, wxGridCellAttr **attr) const
+{
+    if ( row == m_attrCache.row && col == m_attrCache.col )
+    {
+        *attr = m_attrCache.attr;
+        (*attr)->SafeIncRef();
+
+#ifdef DEBUG_ATTR_CACHE
+        gs_nAttrCacheHits++;
+#endif
 
-    wxFont font;
-    if ( attr && attr->HasFont() )
-        font = attr->GetFont();
+        return TRUE;
+    }
     else
-        font = GetDefaultCellFont();
+    {
+#ifdef DEBUG_ATTR_CACHE
+        gs_nAttrCacheMisses++;
+#endif
+        return FALSE;
+    }
+}
 
-    delete attr;
+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) {
+        attr->SetDefAttr(m_defaultCellAttr);
+    } else {
+        attr = m_defaultCellAttr;
+        attr->IncRef();
+    }
 
-    return font;
+    return attr;
 }
 
-void wxGrid::GetDefaultCellAlignment( int *horiz, int *vert )
+wxGridCellAttr *wxGrid::GetOrCreateCellAttr(int row, int col) const
 {
-    if ( horiz )
-        *horiz = m_defaultCellHAlign;
-    if ( vert )
-        *vert = m_defaultCellVAlign;
+    wxGridCellAttr *attr;
+    if ( !LookupAttr(row, col, &attr) || !attr )
+    {
+        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 )
+        {
+            attr = new wxGridCellAttr;
+
+            // artificially inc the ref count to match DecRef() in caller
+            attr->IncRef();
+
+            m_table->SetAttr(attr, row, col);
+        }
+
+        CacheAttr(row, col, attr);
+    }
+    attr->SetDefAttr(m_defaultCellAttr);
+    return attr;
 }
 
-void wxGrid::GetCellAlignment( int row, int col, int *horiz, int *vert )
+// ----------------------------------------------------------------------------
+// setting cell attributes: this is forwarded to the table
+// ----------------------------------------------------------------------------
+
+void wxGrid::SetRowAttr(int row, wxGridCellAttr *attr)
 {
-    wxGridCellAttr *attr = m_table ? m_table->GetAttr(row, col) : NULL;
+    if ( CanHaveAttributes() )
+    {
+        m_table->SetRowAttr(attr, row);
+    }
+    else
+    {
+        attr->SafeDecRef();
+    }
+}
 
-    if ( attr && attr->HasAlignment() )
-        attr->GetAlignment(horiz, vert);
+void wxGrid::SetColAttr(int col, wxGridCellAttr *attr)
+{
+    if ( CanHaveAttributes() )
+    {
+        m_table->SetColAttr(attr, col);
+    }
     else
-        GetDefaultCellAlignment(horiz, vert);
+    {
+        attr->SafeDecRef();
+    }
+}
+
+void wxGrid::SetCellBackgroundColour( int row, int col, const wxColour& colour )
+{
+    if ( CanHaveAttributes() )
+    {
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetBackgroundColour(colour);
+        attr->DecRef();
+    }
+}
+
+void wxGrid::SetCellTextColour( int row, int col, const wxColour& colour )
+{
+    if ( CanHaveAttributes() )
+    {
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetTextColour(colour);
+        attr->DecRef();
+    }
+}
+
+void wxGrid::SetCellFont( int row, int col, const wxFont& font )
+{
+    if ( CanHaveAttributes() )
+    {
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetFont(font);
+        attr->DecRef();
+    }
+}
+
+void wxGrid::SetCellAlignment( int row, int col, int horiz, int vert )
+{
+    if ( CanHaveAttributes() )
+    {
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetAlignment(horiz, vert);
+        attr->DecRef();
+    }
+}
+
+void wxGrid::SetCellRenderer(int row, int col, wxGridCellRenderer *renderer)
+{
+    if ( CanHaveAttributes() )
+    {
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetRenderer(renderer);
+        attr->DecRef();
+    }
+}
 
-    delete attr;
+void wxGrid::SetCellEditor(int row, int col, wxGridCellEditor* editor)
+{
+    if ( CanHaveAttributes() )
+    {
+        wxGridCellAttr *attr = GetOrCreateCellAttr(row, col);
+        attr->SetEditor(editor);
+        attr->DecRef();
+    }
 }
 
+// ----------------------------------------------------------------------------
+// row/col size
+// ----------------------------------------------------------------------------
+
 void wxGrid::SetDefaultRowSize( int height, bool resizeExistingRows )
 {
     m_defaultRowHeight = wxMax( height, WXGRID_MIN_ROW_HEIGHT );
@@ -4718,90 +5544,6 @@ void wxGrid::SetColSize( int col, int width )
     CalcDimensions();
 }
 
-void wxGrid::SetDefaultCellBackgroundColour( const wxColour& col )
-{
-    m_gridWin->SetBackgroundColour(col);
-}
-
-void wxGrid::SetDefaultCellTextColour( const wxColour& col )
-{
-    m_gridWin->SetForegroundColour(col);
-}
-
-void wxGrid::SetDefaultCellAlignment( int horiz, int vert )
-{
-    m_defaultCellHAlign = horiz;
-    m_defaultCellVAlign = vert;
-}
-
-bool wxGrid::CanHaveAttributes()
-{
-    if ( !m_table )
-    {
-        return FALSE;
-    }
-
-    if ( !m_table->GetAttrProvider() )
-    {
-        // use the default attr provider by default
-        // (another choice would be to just return FALSE thus forcing the user
-        // to it himself)
-        m_table->SetAttrProvider(new wxGridCellAttrProvider);
-    }
-
-    return TRUE;
-}
-
-void wxGrid::SetCellBackgroundColour( int row, int col, const wxColour& colour )
-{
-    if ( CanHaveAttributes() )
-    {
-        wxGridCellAttr *attr = new wxGridCellAttr;
-        attr->SetBackgroundColour(colour);
-
-        m_table->SetAttr(attr, row, col);
-    }
-}
-
-void wxGrid::SetCellTextColour( int row, int col, const wxColour& colour )
-{
-    if ( CanHaveAttributes() )
-    {
-        wxGridCellAttr *attr = new wxGridCellAttr;
-        attr->SetTextColour(colour);
-
-        m_table->SetAttr(attr, row, col);
-    }
-}
-
-void wxGrid::SetDefaultCellFont( const wxFont& font )
-{
-    m_defaultCellFont = font;
-}
-
-void wxGrid::SetCellFont( int row, int col, const wxFont& font )
-{
-    if ( CanHaveAttributes() )
-    {
-        wxGridCellAttr *attr = new wxGridCellAttr;
-        attr->SetFont(font);
-
-        m_table->SetAttr(attr, row, col);
-    }
-}
-
-void wxGrid::SetCellAlignment( int row, int col, int horiz, int vert )
-{
-    if ( CanHaveAttributes() )
-    {
-        wxGridCellAttr *attr = new wxGridCellAttr;
-        attr->SetAlignment(horiz, vert);
-
-        m_table->SetAttr(attr, row, col);
-    }
-}
-
-
 
 //
 // ------ cell value accessor functions