don't generate wxEVT_CONTEXT_MENU messages for right clicks in the list control header

[wxWidgets.git] / src / generic / grid.cpp

///////////////////////////////////////////////////////////////////////////
// Name:        src/generic/grid.cpp
// Purpose:     wxGrid and related classes
// Author:      Michael Bedward (based on code by Julian Smart, Robin Dunn)
// Modified by: Robin Dunn, Vadim Zeitlin
// Created:     1/08/1999
// RCS-ID:      $Id$
// Copyright:   (c) Michael Bedward (mbedward@ozemail.com.au)
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// For compilers that support precompilatixon, includes "wx/wx.h".
#include "wx/wxprec.h"

#include "wx/defs.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_GRID

#ifndef WX_PRECOMP
    #include "wx/utils.h"
    #include "wx/dcclient.h"
    #include "wx/settings.h"
    #include "wx/log.h"
    #include "wx/textctrl.h"
    #include "wx/checkbox.h"
    #include "wx/combobox.h"
    #include "wx/valtext.h"
    #include "wx/intl.h"
    #include "wx/math.h"
#endif

#include "wx/textfile.h"
#include "wx/spinctrl.h"
#include "wx/tokenzr.h"
#include "wx/renderer.h"

#include "wx/grid.h"
#include "wx/generic/gridsel.h"

#if defined(__WXMOTIF__)
    #define WXUNUSED_MOTIF(identifier)  WXUNUSED(identifier)
#else
    #define WXUNUSED_MOTIF(identifier)  identifier
#endif

#if defined(__WXGTK__)
    #define WXUNUSED_GTK(identifier)    WXUNUSED(identifier)
#else
    #define WXUNUSED_GTK(identifier)    identifier
#endif

// Required for wxIs... functions
#include <ctype.h>

// ----------------------------------------------------------------------------
// array classes
// ----------------------------------------------------------------------------

WX_DEFINE_ARRAY_WITH_DECL_PTR(wxGridCellAttr *, wxArrayAttrs,
                                 class WXDLLIMPEXP_ADV);

struct wxGridCellWithAttr
{
    wxGridCellWithAttr(int row, int col, wxGridCellAttr *attr_)
        : coords(row, col), attr(attr_)
    {
    }

    ~wxGridCellWithAttr()
    {
        attr->DecRef();
    }

    wxGridCellCoords coords;
    wxGridCellAttr  *attr;

// Cannot do this:
//  DECLARE_NO_COPY_CLASS(wxGridCellWithAttr)
// without rewriting the macros, which require a public copy constructor.
};

WX_DECLARE_OBJARRAY_WITH_DECL(wxGridCellWithAttr, wxGridCellWithAttrArray,
                              class WXDLLIMPEXP_ADV);

#include "wx/arrimpl.cpp"

WX_DEFINE_OBJARRAY(wxGridCellCoordsArray)
WX_DEFINE_OBJARRAY(wxGridCellWithAttrArray)

// ----------------------------------------------------------------------------
// events
// ----------------------------------------------------------------------------

DEFINE_EVENT_TYPE(wxEVT_GRID_CELL_LEFT_CLICK)
DEFINE_EVENT_TYPE(wxEVT_GRID_CELL_RIGHT_CLICK)
DEFINE_EVENT_TYPE(wxEVT_GRID_CELL_LEFT_DCLICK)
DEFINE_EVENT_TYPE(wxEVT_GRID_CELL_RIGHT_DCLICK)
DEFINE_EVENT_TYPE(wxEVT_GRID_CELL_BEGIN_DRAG)
DEFINE_EVENT_TYPE(wxEVT_GRID_LABEL_LEFT_CLICK)
DEFINE_EVENT_TYPE(wxEVT_GRID_LABEL_RIGHT_CLICK)
DEFINE_EVENT_TYPE(wxEVT_GRID_LABEL_LEFT_DCLICK)
DEFINE_EVENT_TYPE(wxEVT_GRID_LABEL_RIGHT_DCLICK)
DEFINE_EVENT_TYPE(wxEVT_GRID_ROW_SIZE)
DEFINE_EVENT_TYPE(wxEVT_GRID_COL_SIZE)
DEFINE_EVENT_TYPE(wxEVT_GRID_RANGE_SELECT)
DEFINE_EVENT_TYPE(wxEVT_GRID_CELL_CHANGE)
DEFINE_EVENT_TYPE(wxEVT_GRID_SELECT_CELL)
DEFINE_EVENT_TYPE(wxEVT_GRID_EDITOR_SHOWN)
DEFINE_EVENT_TYPE(wxEVT_GRID_EDITOR_HIDDEN)
DEFINE_EVENT_TYPE(wxEVT_GRID_EDITOR_CREATED)

// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------

class WXDLLIMPEXP_ADV wxGridRowLabelWindow : public wxWindow
{
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 OnMouseWheel( wxMouseEvent& event );
    void OnKeyDown( wxKeyEvent& event );
    void OnKeyUp( wxKeyEvent& );
    void OnChar( wxKeyEvent& );

    DECLARE_DYNAMIC_CLASS(wxGridRowLabelWindow)
    DECLARE_EVENT_TABLE()
    DECLARE_NO_COPY_CLASS(wxGridRowLabelWindow)
};


class WXDLLIMPEXP_ADV wxGridColLabelWindow : public wxWindow
{
public:
    wxGridColLabelWindow() { m_owner = (wxGrid *)NULL; }
    wxGridColLabelWindow( wxGrid *parent, wxWindowID id,
                          const wxPoint &pos, const wxSize &size );

private:
    wxGrid   *m_owner;

    void OnPaint( wxPaintEvent &event );
    void OnMouseEvent( wxMouseEvent& event );
    void OnMouseWheel( wxMouseEvent& event );
    void OnKeyDown( wxKeyEvent& event );
    void OnKeyUp( wxKeyEvent& );
    void OnChar( wxKeyEvent& );

    DECLARE_DYNAMIC_CLASS(wxGridColLabelWindow)
    DECLARE_EVENT_TABLE()
    DECLARE_NO_COPY_CLASS(wxGridColLabelWindow)
};


class WXDLLIMPEXP_ADV wxGridCornerLabelWindow : public wxWindow
{
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 OnMouseWheel( wxMouseEvent& event );
    void OnKeyDown( wxKeyEvent& event );
    void OnKeyUp( wxKeyEvent& );
    void OnChar( wxKeyEvent& );
    void OnPaint( wxPaintEvent& event );

    DECLARE_DYNAMIC_CLASS(wxGridCornerLabelWindow)
    DECLARE_EVENT_TABLE()
    DECLARE_NO_COPY_CLASS(wxGridCornerLabelWindow)
};

class WXDLLIMPEXP_ADV wxGridWindow : public wxWindow
{
public:
    wxGridWindow()
    {
        m_owner = (wxGrid *)NULL;
        m_rowLabelWin = (wxGridRowLabelWindow *)NULL;
        m_colLabelWin = (wxGridColLabelWindow *)NULL;
    }

    wxGridWindow( wxGrid *parent,
                  wxGridRowLabelWindow *rowLblWin,
                  wxGridColLabelWindow *colLblWin,
                  wxWindowID id, const wxPoint &pos, const wxSize &size );
    ~wxGridWindow() {}

    void ScrollWindow( int dx, int dy, const wxRect *rect );

    wxGrid* GetOwner() { return m_owner; }

private:
    wxGrid                   *m_owner;
    wxGridRowLabelWindow     *m_rowLabelWin;
    wxGridColLabelWindow     *m_colLabelWin;

    void OnPaint( wxPaintEvent &event );
    void OnMouseWheel( wxMouseEvent& event );
    void OnMouseEvent( wxMouseEvent& event );
    void OnKeyDown( wxKeyEvent& );
    void OnKeyUp( wxKeyEvent& );
    void OnChar( wxKeyEvent& );
    void OnEraseBackground( wxEraseEvent& );
    void OnFocus( wxFocusEvent& );

    DECLARE_DYNAMIC_CLASS(wxGridWindow)
    DECLARE_EVENT_TABLE()
    DECLARE_NO_COPY_CLASS(wxGridWindow)
};


class wxGridCellEditorEvtHandler : public wxEvtHandler
{
public:
    wxGridCellEditorEvtHandler(wxGrid* grid, wxGridCellEditor* editor)
        : m_grid(grid),
          m_editor(editor),
          m_inSetFocus(false)
    {
    }

    void OnKillFocus(wxFocusEvent& event);
    void OnKeyDown(wxKeyEvent& event);
    void OnChar(wxKeyEvent& event);

    void SetInSetFocus(bool inSetFocus) { m_inSetFocus = inSetFocus; }

private:
    wxGrid             *m_grid;
    wxGridCellEditor   *m_editor;

    // Work around the fact that a focus kill event can be sent to
    // a combobox within a set focus event.
    bool                m_inSetFocus;

    DECLARE_EVENT_TABLE()
    DECLARE_DYNAMIC_CLASS(wxGridCellEditorEvtHandler)
    DECLARE_NO_COPY_CLASS(wxGridCellEditorEvtHandler)
};


IMPLEMENT_ABSTRACT_CLASS(wxGridCellEditorEvtHandler, wxEvtHandler)

BEGIN_EVENT_TABLE( wxGridCellEditorEvtHandler, wxEvtHandler )
    EVT_KILL_FOCUS( wxGridCellEditorEvtHandler::OnKillFocus )
    EVT_KEY_DOWN( wxGridCellEditorEvtHandler::OnKeyDown )
    EVT_CHAR( wxGridCellEditorEvtHandler::OnChar )
END_EVENT_TABLE()



// ----------------------------------------------------------------------------
// the internal data representation used by wxGridCellAttrProvider
// ----------------------------------------------------------------------------

// this class stores attributes set for cells
class WXDLLIMPEXP_ADV wxGridCellAttrData
{
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;

    wxGridCellWithAttrArray m_attrs;
};

// this class stores attributes set for rows or columns
class WXDLLIMPEXP_ADV wxGridRowOrColAttrData
{
public:
    // empty ctor to suppress warnings
    wxGridRowOrColAttrData() {}
    ~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 WXDLLIMPEXP_ADV wxGridCellAttrProviderData
{
public:
    wxGridCellAttrData m_cellAttrs;
    wxGridRowOrColAttrData m_rowAttrs,
                           m_colAttrs;
};


// ----------------------------------------------------------------------------
// data structures used for the data type registry
// ----------------------------------------------------------------------------

struct wxGridDataTypeInfo
{
    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;

    DECLARE_NO_COPY_CLASS(wxGridDataTypeInfo)
};


WX_DEFINE_ARRAY_WITH_DECL_PTR(wxGridDataTypeInfo*, wxGridDataTypeInfoArray,
                                 class WXDLLIMPEXP_ADV);


class WXDLLIMPEXP_ADV wxGridTypeRegistry
{
public:
  wxGridTypeRegistry() {}
    ~wxGridTypeRegistry();

    void RegisterDataType(const wxString& typeName,
                     wxGridCellRenderer* renderer,
                     wxGridCellEditor* editor);

    // find one of already registered data types
    int FindRegisteredDataType(const wxString& typeName);

    // 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);

    wxGridCellRenderer* GetRenderer(int index);
    wxGridCellEditor*   GetEditor(int index);

private:
    wxGridDataTypeInfoArray m_typeinfo;
};

// ----------------------------------------------------------------------------
// conditional compilation
// ----------------------------------------------------------------------------

#ifndef WXGRID_DRAW_LINES
#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

// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------

wxGridCellCoords wxGridNoCellCoords( -1, -1 );
wxRect wxGridNoCellRect( -1, -1, -1, -1 );

// scroll line size
// TODO: this doesn't work at all, grid cells have different sizes and approx
//       calculations don't work as because of the size mismatch scrollbars
//       sometimes fail to be shown when they should be or vice versa
//
//       The scroll bars may be a little flakey once in a while, but that is
//       surely much less horrible than having scroll lines of only 1!!!
//       -- Robin
//
//       Well, it's still seriously broken so it might be better but needs
//       fixing anyhow
//       -- Vadim
static const size_t GRID_SCROLL_LINE_X = 15;  // 1;
static const size_t GRID_SCROLL_LINE_Y = GRID_SCROLL_LINE_X;

// 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;

#if 0
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------

static inline int GetScrollX(int x)
{
    return (x + GRID_SCROLL_LINE_X - 1) / GRID_SCROLL_LINE_X;
}

static inline int GetScrollY(int y)
{
    return (y + GRID_SCROLL_LINE_Y - 1) / GRID_SCROLL_LINE_Y;
}
#endif

// ============================================================================
// implementation
// ============================================================================

// ----------------------------------------------------------------------------
// wxGridCellEditor
// ----------------------------------------------------------------------------

wxGridCellEditor::wxGridCellEditor()
{
    m_control = NULL;
    m_attr = NULL;
}

wxGridCellEditor::~wxGridCellEditor()
{
    Destroy();
}

void wxGridCellEditor::Create(wxWindow* WXUNUSED(parent),
                              wxWindowID WXUNUSED(id),
                              wxEvtHandler* evtHandler)
{
    if ( evtHandler )
        m_control->PushEventHandler(evtHandler);
}

void wxGridCellEditor::PaintBackground(const wxRect& rectCell,
                                       wxGridCellAttr *attr)
{
    // erase the background because we might not fill the cell
    wxClientDC dc(m_control->GetParent());
    wxGridWindow* gridWindow = wxDynamicCast(m_control->GetParent(), wxGridWindow);
    if (gridWindow)
        gridWindow->GetOwner()->PrepareDC(dc);

    dc.SetPen(*wxTRANSPARENT_PEN);
    dc.SetBrush(wxBrush(attr->GetBackgroundColour(), wxSOLID));
    dc.DrawRectangle(rectCell);

    // redraw the control we just painted over
    m_control->Refresh();
}

void wxGridCellEditor::Destroy()
{
    if (m_control)
    {
        m_control->PopEventHandler(true /* delete it*/);

        m_control->Destroy();
        m_control = NULL;
    }
}

void wxGridCellEditor::Show(bool show, wxGridCellAttr *attr)
{
    wxASSERT_MSG(m_control, wxT("The wxGridCellEditor must be created first!"));

    m_control->Show(show);

    if ( show )
    {
        // set the colours/fonts if we have any
        if ( attr )
        {
            m_colFgOld = m_control->GetForegroundColour();
            m_control->SetForegroundColour(attr->GetTextColour());

            m_colBgOld = m_control->GetBackgroundColour();
            m_control->SetBackgroundColour(attr->GetBackgroundColour());

// Workaround for GTK+1 font setting problem on some platforms
#if !defined(__WXGTK__) || defined(__WXGTK20__)
            m_fontOld = m_control->GetFont();
            m_control->SetFont(attr->GetFont());
#endif
            // can't do anything more in the base class version, the other
            // attributes may only be used by the derived classes
        }
    }
    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;
        }

// Workaround for GTK+1 font setting problem on some platforms
#if !defined(__WXGTK__) || defined(__WXGTK20__)
        if ( m_fontOld.Ok() )
        {
            m_control->SetFont(m_fontOld);
            m_fontOld = wxNullFont;
        }
#endif
    }
}

void wxGridCellEditor::SetSize(const wxRect& rect)
{
    wxASSERT_MSG(m_control, wxT("The wxGridCellEditor must be created first!"));

    m_control->SetSize(rect, wxSIZE_ALLOW_MINUS_ONE);
}

void wxGridCellEditor::HandleReturn(wxKeyEvent& event)
{
    event.Skip();
}

bool wxGridCellEditor::IsAcceptedKey(wxKeyEvent& event)
{
    bool ctrl = event.ControlDown();
    bool alt  = event.AltDown();

#ifdef __WXMAC__
    // On the Mac the Alt key is more like shift and is used for entry of
    // valid characters, so check for Ctrl and Meta instead.
    alt = event.MetaDown();
#endif

    // Assume it's not a valid char if ctrl or alt is down, but if both are
    // down then it may be because of an AltGr key combination, so let them
    // through in that case.
    if ((ctrl || alt) && !(ctrl && alt))
        return false;

    int key = 0;
    bool keyOk = true;

#if wxUSE_UNICODE
    // if the unicode key code is not really a unicode character (it may
    // be a function key or etc., the platforms appear to always give us a
    // small value in this case) then fallback to the ASCII key code but
    // don't do anything for function keys or etc.
    key = event.GetUnicodeKey();
    if (key <= 127)
    {
        key = event.GetKeyCode();
        keyOk = (key <= 127);
    }
#else
    key = event.GetKeyCode();
    keyOk = (key <= 255);
#endif

    return keyOk;
}

void wxGridCellEditor::StartingKey(wxKeyEvent& event)
{
    event.Skip();
}

void wxGridCellEditor::StartingClick()
{
}

#if wxUSE_TEXTCTRL

// ----------------------------------------------------------------------------
// wxGridCellTextEditor
// ----------------------------------------------------------------------------

wxGridCellTextEditor::wxGridCellTextEditor()
{
    m_maxChars = 0;
}

void wxGridCellTextEditor::Create(wxWindow* parent,
                                  wxWindowID id,
                                  wxEvtHandler* evtHandler)
{
    m_control = new wxTextCtrl(parent, id, wxEmptyString,
                               wxDefaultPosition, wxDefaultSize
#if defined(__WXMSW__)
                               , wxTE_PROCESS_TAB | wxTE_AUTO_SCROLL
#endif
                              );

    // set max length allowed in the textctrl, if the parameter was set
    if (m_maxChars != 0)
    {
        ((wxTextCtrl*)m_control)->SetMaxLength(m_maxChars);
    }

    wxGridCellEditor::Create(parent, id, evtHandler);
}

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
}

void wxGridCellTextEditor::SetSize(const wxRect& rectOrig)
{
    wxRect rect(rectOrig);

    // 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)
    {
        rect.x += 1;
        rect.y += 1;
        rect.width -= 1;
        rect.height -= 1;
    }
#else // !GTK
    int extra_x = ( rect.x > 2 )? 2 : 1;

// MB: treat MSW separately here otherwise the caret doesn't show
// when the editor is in the first row.
#if defined(__WXMSW__)
    int extra_y = 2;
#else
    int extra_y = ( rect.y > 2 ) ? 2 : 1;
#endif

#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);
}

void wxGridCellTextEditor::BeginEdit(int row, int col, wxGrid* grid)
{
    wxASSERT_MSG(m_control, wxT("The wxGridCellEditor must be created first!"));

    m_startValue = grid->GetTable()->GetValue(row, col);

    DoBeginEdit(m_startValue);
}

void wxGridCellTextEditor::DoBeginEdit(const wxString& startValue)
{
    Text()->SetValue(startValue);
    Text()->SetInsertionPointEnd();
    Text()->SetSelection(-1, -1);
    Text()->SetFocus();
}

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;
    // No point in setting the text of the hidden control
    //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();
}

bool wxGridCellTextEditor::IsAcceptedKey(wxKeyEvent& event)
{
    return wxGridCellEditor::IsAcceptedKey(event);
}

void wxGridCellTextEditor::StartingKey(wxKeyEvent& event)
{
    // Since this is now happening in the EVT_CHAR event EmulateKeyPress is no
    // longer an appropriate way to get the character into the text control.
    // Do it ourselves instead.  We know that if we get this far that we have
    // a valid character, so not a whole lot of testing needs to be done.

    wxTextCtrl* tc = Text();
    wxChar ch;
    long pos;

#if wxUSE_UNICODE
    ch = event.GetUnicodeKey();
    if (ch <= 127)
        ch = (wxChar)event.GetKeyCode();
#else
    ch = (wxChar)event.GetKeyCode();
#endif

    switch (ch)
    {
        case WXK_DELETE:
            // delete the character at the cursor
            pos = tc->GetInsertionPoint();
            if (pos < tc->GetLastPosition())
                tc->Remove(pos, pos + 1);
            break;

        case WXK_BACK:
            // delete the character before the cursor
            pos = tc->GetInsertionPoint();
            if (pos > 0)
                tc->Remove(pos - 1, pos);
            break;

        default:
            tc->WriteText(ch);
            break;
    }
}

void wxGridCellTextEditor::HandleReturn( wxKeyEvent&
                                         WXUNUSED_GTK(WXUNUSED_MOTIF(event)) )
{
#if defined(__WXMOTIF__) || defined(__WXGTK__)
    // wxMotif needs a little extra help...
    size_t pos = (size_t)( Text()->GetInsertionPoint() );
    wxString s( Text()->GetValue() );
    s = s.Left(pos) + wxT("\n") + s.Mid(pos);
    Text()->SetValue(s);
    Text()->SetInsertionPoint( pos );
#else
    // the other ports can handle a Return key press
    //
    event.Skip();
#endif
}

void wxGridCellTextEditor::SetParameters(const wxString& params)
{
    if ( !params )
    {
        // reset to default
        m_maxChars = 0;
    }
    else
    {
        long tmp;
        if ( !params.ToLong(&tmp) )
        {
            wxLogDebug(_T("Invalid wxGridCellTextEditor parameter string '%s' ignored"), params.c_str());
        }
        else
        {
            m_maxChars = (size_t)tmp;
        }
    }
}

// return the value in the text control
wxString wxGridCellTextEditor::GetValue() const
{
    return Text()->GetValue();
}

// ----------------------------------------------------------------------------
// wxGridCellNumberEditor
// ----------------------------------------------------------------------------

wxGridCellNumberEditor::wxGridCellNumberEditor(int min, int max)
{
    m_min = min;
    m_max = max;
}

void wxGridCellNumberEditor::Create(wxWindow* parent,
                                    wxWindowID id,
                                    wxEvtHandler* evtHandler)
{
#if wxUSE_SPINCTRL
    if ( HasRange() )
    {
        // create a spin ctrl
        m_control = new wxSpinCtrl(parent, wxID_ANY, wxEmptyString,
                                   wxDefaultPosition, wxDefaultSize,
                                   wxSP_ARROW_KEYS,
                                   m_min, m_max);

        wxGridCellEditor::Create(parent, id, evtHandler);
    }
    else
#endif
    {
        // just a text control
        wxGridCellTextEditor::Create(parent, id, evtHandler);

#if wxUSE_VALIDATORS
        Text()->SetValidator(wxTextValidator(wxFILTER_NUMERIC));
#endif // wxUSE_VALIDATORS
    }
}

void wxGridCellNumberEditor::BeginEdit(int row, int col, wxGrid* grid)
{
    // first get the value
    wxGridTableBase *table = grid->GetTable();
    if ( table->CanGetValueAs(row, col, wxGRID_VALUE_NUMBER) )
    {
        m_valueOld = table->GetValueAsLong(row, col);
    }
    else
    {
        m_valueOld = 0;
        wxString sValue = table->GetValue(row, col);
        if (! sValue.ToLong(&m_valueOld) && ! sValue.empty())
        {
            wxFAIL_MSG( _T("this cell doesn't have numeric value") );
            return;
        }
    }

#if wxUSE_SPINCTRL
    if ( HasRange() )
    {
        Spin()->SetValue((int)m_valueOld);
        Spin()->SetFocus();
    }
    else
#endif
    {
        DoBeginEdit(GetString());
    }
}

bool wxGridCellNumberEditor::EndEdit(int row, int col,
                                     wxGrid* grid)
{
    bool changed;
    long value = 0;
    wxString text;

#if wxUSE_SPINCTRL
    if ( HasRange() )
    {
        value = Spin()->GetValue();
        changed = value != m_valueOld;
        if (changed)
            text = wxString::Format(wxT("%ld"), value);
    }
    else
#endif
    {
        text = Text()->GetValue();
        changed = (text.empty() || text.ToLong(&value)) && (value != m_valueOld);
    }

    if ( changed )
    {
        if (grid->GetTable()->CanSetValueAs(row, col, wxGRID_VALUE_NUMBER))
            grid->GetTable()->SetValueAsLong(row, col, value);
        else
            grid->GetTable()->SetValue(row, col, text);
    }

    return changed;
}

void wxGridCellNumberEditor::Reset()
{
#if wxUSE_SPINCTRL
    if ( HasRange() )
    {
        Spin()->SetValue((int)m_valueOld);
    }
    else
#endif
    {
        DoReset(GetString());
    }
}

bool wxGridCellNumberEditor::IsAcceptedKey(wxKeyEvent& event)
{
    if ( wxGridCellEditor::IsAcceptedKey(event) )
    {
        int keycode = event.GetKeyCode();
        if ( (keycode < 128) &&
             (wxIsdigit(keycode) || keycode == '+' || keycode == '-'))
        {
            return true;
        }
    }

    return false;
}

void wxGridCellNumberEditor::StartingKey(wxKeyEvent& event)
{
    int keycode = event.GetKeyCode();
    if ( !HasRange() )
    {
        if ( wxIsdigit(keycode) || keycode == '+' || keycode == '-')
        {
            wxGridCellTextEditor::StartingKey(event);

            // skip Skip() below
            return;
        }
    }
#if wxUSE_SPINCTRL
    else
    {
        if ( wxIsdigit(keycode) )
        {
            wxSpinCtrl* spin = (wxSpinCtrl*)m_control;
            spin->SetValue(keycode - '0');
            spin->SetSelection(1,1);
            return;
        }
    }
#endif

    event.Skip();
}

void wxGridCellNumberEditor::SetParameters(const wxString& params)
{
    if ( !params )
    {
        // reset to default
        m_min =
        m_max = -1;
    }
    else
    {
        long tmp;
        if ( params.BeforeFirst(_T(',')).ToLong(&tmp) )
        {
            m_min = (int)tmp;

            if ( params.AfterFirst(_T(',')).ToLong(&tmp) )
            {
                m_max = (int)tmp;

                // skip the error message below
                return;
            }
        }

        wxLogDebug(_T("Invalid wxGridCellNumberEditor parameter string '%s' ignored"), params.c_str());
    }
}

// return the value in the spin control if it is there (the text control otherwise)
wxString wxGridCellNumberEditor::GetValue() const
{
    wxString s;

#if wxUSE_SPINCTRL
    if ( HasRange() )
    {
        long value = Spin()->GetValue();
        s.Printf(wxT("%ld"), value);
    }
    else
#endif
    {
        s = Text()->GetValue();
    }

    return s;
}

// ----------------------------------------------------------------------------
// wxGridCellFloatEditor
// ----------------------------------------------------------------------------

wxGridCellFloatEditor::wxGridCellFloatEditor(int width, int precision)
{
    m_width = width;
    m_precision = precision;
}

void wxGridCellFloatEditor::Create(wxWindow* parent,
                                   wxWindowID id,
                                   wxEvtHandler* evtHandler)
{
    wxGridCellTextEditor::Create(parent, id, evtHandler);

#if wxUSE_VALIDATORS
    Text()->SetValidator(wxTextValidator(wxFILTER_NUMERIC));
#endif // wxUSE_VALIDATORS
}

void wxGridCellFloatEditor::BeginEdit(int row, int col, wxGrid* grid)
{
    // first get the value
    wxGridTableBase *table = grid->GetTable();
    if ( table->CanGetValueAs(row, col, wxGRID_VALUE_FLOAT) )
    {
        m_valueOld = table->GetValueAsDouble(row, col);
    }
    else
    {
        m_valueOld = 0.0;
        wxString sValue = table->GetValue(row, col);
        if (! sValue.ToDouble(&m_valueOld) && ! sValue.empty())
        {
            wxFAIL_MSG( _T("this cell doesn't have float value") );
            return;
        }
    }

    DoBeginEdit(GetString());
}

bool wxGridCellFloatEditor::EndEdit(int row, int col,
                                     wxGrid* grid)
{
    double value = 0.0;
    wxString text(Text()->GetValue());

    if ( (text.empty() || text.ToDouble(&value)) &&
            !wxIsSameDouble(value, m_valueOld) )
    {
        if (grid->GetTable()->CanSetValueAs(row, col, wxGRID_VALUE_FLOAT))
            grid->GetTable()->SetValueAsDouble(row, col, value);
        else
            grid->GetTable()->SetValue(row, col, text);

        return true;
    }

    return false;
}

void wxGridCellFloatEditor::Reset()
{
    DoReset(GetString());
}

void wxGridCellFloatEditor::StartingKey(wxKeyEvent& event)
{
    int keycode = event.GetKeyCode();
    char tmpbuf[2];
    tmpbuf[0] = (char) keycode;
    tmpbuf[1] = '\0';
    wxString strbuf(tmpbuf, *wxConvCurrent);

#if wxUSE_INTL
    bool is_decimal_point = ( strbuf ==
       wxLocale::GetInfo(wxLOCALE_DECIMAL_POINT, wxLOCALE_CAT_NUMBER) );
#else
    bool is_decimal_point = ( strbuf == _T(".") );
#endif

    if ( wxIsdigit(keycode) || keycode == '+' || keycode == '-'
         || is_decimal_point )
    {
        wxGridCellTextEditor::StartingKey(event);

        // skip Skip() below
        return;
    }

    event.Skip();
}

void wxGridCellFloatEditor::SetParameters(const wxString& params)
{
    if ( !params )
    {
        // reset to default
        m_width =
        m_precision = -1;
    }
    else
    {
        long tmp;
        if ( params.BeforeFirst(_T(',')).ToLong(&tmp) )
        {
            m_width = (int)tmp;

            if ( params.AfterFirst(_T(',')).ToLong(&tmp) )
            {
                m_precision = (int)tmp;

                // skip the error message below
                return;
            }
        }

        wxLogDebug(_T("Invalid wxGridCellFloatEditor parameter string '%s' ignored"), params.c_str());
    }
}

wxString wxGridCellFloatEditor::GetString() const
{
    wxString fmt;
    if ( m_precision == -1 && m_width != -1)
    {
        // default precision
        fmt.Printf(_T("%%%d.f"), m_width);
    }
    else if ( m_precision != -1 && m_width == -1)
    {
        // default width
        fmt.Printf(_T("%%.%df"), m_precision);
    }
    else if ( m_precision != -1 && m_width != -1 )
    {
        fmt.Printf(_T("%%%d.%df"), m_width, m_precision);
    }
    else
    {
        // default width/precision
        fmt = _T("%f");
    }

    return wxString::Format(fmt, m_valueOld);
}

bool wxGridCellFloatEditor::IsAcceptedKey(wxKeyEvent& event)
{
    if ( wxGridCellEditor::IsAcceptedKey(event) )
    {
        int keycode = event.GetKeyCode();
        printf("%d\n", keycode);
        // accept digits, 'e' as in '1e+6', also '-', '+', and '.'
        char tmpbuf[2];
        tmpbuf[0] = (char) keycode;
        tmpbuf[1] = '\0';
        wxString strbuf(tmpbuf, *wxConvCurrent);

#if wxUSE_INTL
        bool is_decimal_point =
            ( strbuf == wxLocale::GetInfo(wxLOCALE_DECIMAL_POINT,
                                          wxLOCALE_CAT_NUMBER) );
#else
        bool is_decimal_point = ( strbuf == _T(".") );
#endif

        if ( (keycode < 128) &&
             (wxIsdigit(keycode) || tolower(keycode) == 'e' ||
              is_decimal_point || keycode == '+' || keycode == '-') )
        {
            return true;
        }
    }

    return false;
}

#endif // wxUSE_TEXTCTRL

#if wxUSE_CHECKBOX

// ----------------------------------------------------------------------------
// wxGridCellBoolEditor
// ----------------------------------------------------------------------------

void wxGridCellBoolEditor::Create(wxWindow* parent,
                                  wxWindowID id,
                                  wxEvtHandler* evtHandler)
{
    m_control = new wxCheckBox(parent, id, wxEmptyString,
                               wxDefaultPosition, wxDefaultSize,
                               wxNO_BORDER);

    wxGridCellEditor::Create(parent, id, evtHandler);
}

void wxGridCellBoolEditor::SetSize(const wxRect& r)
{
    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

    int hAlign = wxALIGN_CENTRE;
    int vAlign = wxALIGN_CENTRE;
    if (GetCellAttr())
        GetCellAttr()->GetAlignment(& hAlign, & vAlign);

    int x = 0, y = 0;
    if (hAlign == wxALIGN_LEFT)
    {
        x = r.x + 2;

#ifdef __WXMSW__
        x += 2;
#endif

        y = r.y + r.height / 2 - size.y / 2;
    }
    else if (hAlign == wxALIGN_RIGHT)
    {
        x = r.x + r.width - size.x - 2;
        y = r.y + r.height / 2 - size.y / 2;
    }
    else if (hAlign == wxALIGN_CENTRE)
    {
        x = r.x + r.width / 2 - size.x / 2;
        y = r.y + r.height / 2 - size.y / 2;
    }

    m_control->Move(x, y);
}

void wxGridCellBoolEditor::Show(bool show, wxGridCellAttr *attr)
{
    m_control->Show(show);

    if ( show )
    {
        wxColour colBg = attr ? attr->GetBackgroundColour() : *wxLIGHT_GREY;
        CBox()->SetBackgroundColour(colBg);
    }
}

void wxGridCellBoolEditor::BeginEdit(int row, int col, wxGrid* grid)
{
    wxASSERT_MSG(m_control,
                 wxT("The wxGridCellEditor must be Created first!"));

    if (grid->GetTable()->CanGetValueAs(row, col, wxGRID_VALUE_BOOL))
    {
        m_startValue = grid->GetTable()->GetValueAsBool(row, col);
    }
    else
    {
        wxString cellval( grid->GetTable()->GetValue(row, col) );
        m_startValue = !( !cellval || (cellval == wxT("0")) );
    }

    CBox()->SetValue(m_startValue);
    CBox()->SetFocus();
}

bool wxGridCellBoolEditor::EndEdit(int row, int col,
                                   wxGrid* grid)
{
    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 (grid->GetTable()->CanGetValueAs(row, col, wxGRID_VALUE_BOOL))
            grid->GetTable()->SetValueAsBool(row, col, value);
        else
            grid->GetTable()->SetValue(row, col, value ? _T("1") : wxEmptyString);
    }

    return changed;
}

void wxGridCellBoolEditor::Reset()
{
    wxASSERT_MSG(m_control,
                 wxT("The wxGridCellEditor must be Created first!"));

    CBox()->SetValue(m_startValue);
}

void wxGridCellBoolEditor::StartingClick()
{
    CBox()->SetValue(!CBox()->GetValue());
}

bool wxGridCellBoolEditor::IsAcceptedKey(wxKeyEvent& event)
{
    if ( wxGridCellEditor::IsAcceptedKey(event) )
    {
        int keycode = event.GetKeyCode();
        switch ( keycode )
        {
            case WXK_SPACE:
            case '+':
            case '-':
                return true;
        }
    }

    return false;
}

void wxGridCellBoolEditor::StartingKey(wxKeyEvent& event)
{
    int keycode = event.GetKeyCode();
    switch ( keycode )
    {
        case WXK_SPACE:
            CBox()->SetValue(!CBox()->GetValue());
            break;

        case '+':
            CBox()->SetValue(true);
            break;

        case '-':
            CBox()->SetValue(false);
            break;
    }
}


// return the value as "1" for true and the empty string for false
wxString wxGridCellBoolEditor::GetValue() const
{
  bool bSet = CBox()->GetValue();
  return bSet ? _T("1") : wxEmptyString;
}

#endif // wxUSE_CHECKBOX

#if wxUSE_COMBOBOX

// ----------------------------------------------------------------------------
// wxGridCellChoiceEditor
// ----------------------------------------------------------------------------

wxGridCellChoiceEditor::wxGridCellChoiceEditor(const wxArrayString& choices,
                                               bool allowOthers)
    : m_choices(choices),
      m_allowOthers(allowOthers) { }

wxGridCellChoiceEditor::wxGridCellChoiceEditor(size_t count,
                                               const wxString choices[],
                                               bool allowOthers)
                      : m_allowOthers(allowOthers)
{
    if ( count )
    {
        m_choices.Alloc(count);
        for ( size_t n = 0; n < count; n++ )
        {
            m_choices.Add(choices[n]);
        }
    }
}

wxGridCellEditor *wxGridCellChoiceEditor::Clone() const
{
    wxGridCellChoiceEditor *editor = new wxGridCellChoiceEditor;
    editor->m_allowOthers = m_allowOthers;
    editor->m_choices = m_choices;

    return editor;
}

void wxGridCellChoiceEditor::Create(wxWindow* parent,
                                    wxWindowID id,
                                    wxEvtHandler* evtHandler)
{
    m_control = new wxComboBox(parent, id, wxEmptyString,
                               wxDefaultPosition, wxDefaultSize,
                               m_choices,
                               m_allowOthers ? 0 : wxCB_READONLY);

    wxGridCellEditor::Create(parent, id, evtHandler);
}

void wxGridCellChoiceEditor::PaintBackground(const wxRect& rectCell,
                                             wxGridCellAttr * attr)
{
    // 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);
}

void wxGridCellChoiceEditor::BeginEdit(int row, int col, wxGrid* grid)
{
    wxASSERT_MSG(m_control,
                 wxT("The wxGridCellEditor must be Created first!"));

    wxGridCellEditorEvtHandler* evtHandler = NULL;
    if (m_control)
        evtHandler = wxDynamicCast(m_control->GetEventHandler(), wxGridCellEditorEvtHandler);

    // Don't immediately end if we get a kill focus event within BeginEdit
    if (evtHandler)
        evtHandler->SetInSetFocus(true);

    m_startValue = grid->GetTable()->GetValue(row, col);

    if (m_allowOthers)
    {
        Combo()->SetValue(m_startValue);
    }
    else
    {
        // find the right position, or default to the first if not found
        int pos = Combo()->FindString(m_startValue);
        if (pos == wxNOT_FOUND)
            pos = 0;
        Combo()->SetSelection(pos);
    }

    Combo()->SetInsertionPointEnd();
    Combo()->SetFocus();

    if (evtHandler)
    {
        // When dropping down the menu, a kill focus event
        // happens after this point, so we can't reset the flag yet.
#if !defined(__WXGTK20__)
        evtHandler->SetInSetFocus(false);
#endif
    }
}

bool wxGridCellChoiceEditor::EndEdit(int row, int col,
                                     wxGrid* grid)
{
    wxString value = Combo()->GetValue();
    if ( value == m_startValue )
        return false;

    grid->GetTable()->SetValue(row, col, value);

    return true;
}

void wxGridCellChoiceEditor::Reset()
{
    Combo()->SetValue(m_startValue);
    Combo()->SetInsertionPointEnd();
}

void wxGridCellChoiceEditor::SetParameters(const wxString& params)
{
    if ( !params )
    {
        // what can we do?
        return;
    }

    m_choices.Empty();

    wxStringTokenizer tk(params, _T(','));
    while ( tk.HasMoreTokens() )
    {
        m_choices.Add(tk.GetNextToken());
    }
}

// return the value in the text control
wxString wxGridCellChoiceEditor::GetValue() const
{
  return Combo()->GetValue();
}

#endif // wxUSE_COMBOBOX

// ----------------------------------------------------------------------------
// wxGridCellEditorEvtHandler
// ----------------------------------------------------------------------------

void wxGridCellEditorEvtHandler::OnKillFocus(wxFocusEvent& event)
{
    // Don't disable the cell if we're just starting to edit it
    if (m_inSetFocus)
        return;

    // accept changes
    m_grid->DisableCellEditControl();

    event.Skip();
}

void wxGridCellEditorEvtHandler::OnKeyDown(wxKeyEvent& event)
{
    switch ( event.GetKeyCode() )
    {
        case WXK_ESCAPE:
            m_editor->Reset();
            m_grid->DisableCellEditControl();
            break;

        case WXK_TAB:
            m_grid->GetEventHandler()->ProcessEvent( event );
            break;

        case WXK_RETURN:
        case WXK_NUMPAD_ENTER:
            if (!m_grid->GetEventHandler()->ProcessEvent(event))
                m_editor->HandleReturn(event);
            break;

        default:
            event.Skip();
            break;
    }
}

void wxGridCellEditorEvtHandler::OnChar(wxKeyEvent& event)
{
    int row = m_grid->GetGridCursorRow();
    int col = m_grid->GetGridCursorCol();
    wxRect rect = m_grid->CellToRect( row, col );
    int cw, ch;
    m_grid->GetGridWindow()->GetClientSize( &cw, &ch );

    // if cell width is smaller than grid client area, cell is wholly visible
    bool wholeCellVisible = (rect.GetWidth() < cw);

    switch ( event.GetKeyCode() )
    {
        case WXK_ESCAPE:
        case WXK_TAB:
        case WXK_RETURN:
        case WXK_NUMPAD_ENTER:
            break;

        case WXK_HOME:
        {
            if ( wholeCellVisible )
            {
                // no special processing needed...
                event.Skip();
                break;
            }

            // do special processing for partly visible cell...

            // get the widths of all cells previous to this one
            int colXPos = 0;
            for ( int i = 0; i < col; i++ )
            {
                colXPos += m_grid->GetColSize(i);
            }

            int xUnit = 1, yUnit = 1;
            m_grid->GetScrollPixelsPerUnit(&xUnit, &yUnit);
            if (col != 0)
            {
                m_grid->Scroll(colXPos / xUnit - 1, m_grid->GetScrollPos(wxVERTICAL));
            }
            else
            {
                m_grid->Scroll(colXPos / xUnit, m_grid->GetScrollPos(wxVERTICAL));
            }
            event.Skip();
            break;
        }
        case WXK_END:
        {
            if ( wholeCellVisible )
            {
                // no special processing needed...
                event.Skip();
                break;
            }

            // do special processing for partly visible cell...

            int textWidth = 0;
            wxString value = m_grid->GetCellValue(row, col);
            if ( wxEmptyString != value )
            {
                // get width of cell CONTENTS (text)
                int y;
                wxFont font = m_grid->GetCellFont(row, col);
                m_grid->GetTextExtent(value, &textWidth, &y, NULL, NULL, &font);

                // try to RIGHT align the text by scrolling
                int client_right = m_grid->GetGridWindow()->GetClientSize().GetWidth();

                // (m_grid->GetScrollLineX()*2) is a factor for not scrolling to far,
                // otherwise the last part of the cell content might be hidden below the scroll bar
                // FIXME: maybe there is a more suitable correction?
                textWidth -= (client_right - (m_grid->GetScrollLineX() * 2));
                if ( textWidth < 0 )
                {
                    textWidth = 0;
                }
            }

            // get the widths of all cells previous to this one
            int colXPos = 0;
            for ( int i = 0; i < col; i++ )
            {
                colXPos += m_grid->GetColSize(i);
            }

            // and add the (modified) text width of the cell contents
            // as we'd like to see the last part of the cell contents
            colXPos += textWidth;

            int xUnit = 1, yUnit = 1;
            m_grid->GetScrollPixelsPerUnit(&xUnit, &yUnit);
            m_grid->Scroll(colXPos/xUnit-1, m_grid->GetScrollPos(wxVERTICAL));
            event.Skip();
            break;
        }

        default:
            event.Skip();
    }
}

// ----------------------------------------------------------------------------
// wxGridCellWorker is an (almost) empty common base class for
// wxGridCellRenderer and wxGridCellEditor managing ref counting
// ----------------------------------------------------------------------------

void wxGridCellWorker::SetParameters(const wxString& WXUNUSED(params))
{
    // nothing to do
}

wxGridCellWorker::~wxGridCellWorker()
{
}

// ============================================================================
// renderer classes
// ============================================================================

// ----------------------------------------------------------------------------
// wxGridCellRenderer
// ----------------------------------------------------------------------------

void wxGridCellRenderer::Draw(wxGrid& grid,
                              wxGridCellAttr& attr,
                              wxDC& dc,
                              const wxRect& rect,
                              int WXUNUSED(row), int WXUNUSED(col),
                              bool isSelected)
{
    dc.SetBackgroundMode( wxSOLID );

    // grey out fields if the grid is disabled
    if ( grid.IsEnabled() )
    {
        if ( isSelected )
        {
            dc.SetBrush( wxBrush(grid.GetSelectionBackground(), wxSOLID) );
        }
        else
        {
            dc.SetBrush( wxBrush(attr.GetBackgroundColour(), wxSOLID) );
        }
    }
    else
    {
        dc.SetBrush(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE), wxSOLID));
    }

    dc.SetPen( *wxTRANSPARENT_PEN );
    dc.DrawRectangle(rect);
}

// ----------------------------------------------------------------------------
// wxGridCellStringRenderer
// ----------------------------------------------------------------------------

void wxGridCellStringRenderer::SetTextColoursAndFont(const wxGrid& grid,
                                                     const wxGridCellAttr& attr,
                                                     wxDC& dc,
                                                     bool isSelected)
{
    dc.SetBackgroundMode( wxTRANSPARENT );

    // TODO some special colours for attr.IsReadOnly() case?

    // different coloured text when the grid is disabled
    if ( grid.IsEnabled() )
    {
      if ( isSelected )
      {
          dc.SetTextBackground( grid.GetSelectionBackground() );
          dc.SetTextForeground( grid.GetSelectionForeground() );
      }
      else
      {
          dc.SetTextBackground( attr.GetBackgroundColour() );
          dc.SetTextForeground( attr.GetTextColour() );
      }
    }
    else
    {
      dc.SetTextBackground(wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE));
      dc.SetTextForeground(wxSystemSettings::GetColour(wxSYS_COLOUR_GRAYTEXT));
    }

    dc.SetFont( attr.GetFont() );
}

wxSize wxGridCellStringRenderer::DoGetBestSize(const wxGridCellAttr& attr,
                                               wxDC& dc,
                                               const wxString& text)
{
    wxCoord x = 0, y = 0, max_x = 0;
    dc.SetFont(attr.GetFont());
    wxStringTokenizer tk(text, _T('\n'));
    while ( tk.HasMoreTokens() )
    {
        dc.GetTextExtent(tk.GetNextToken(), &x, &y);
        max_x = wxMax(max_x, x);
    }

    y *= 1 + text.Freq(wxT('\n')); // multiply by the number of lines.

    return wxSize(max_x, y);
}

wxSize wxGridCellStringRenderer::GetBestSize(wxGrid& grid,
                                             wxGridCellAttr& attr,
                                             wxDC& dc,
                                             int row, int col)
{
    return DoGetBestSize(attr, dc, grid.GetCellValue(row, col));
}

void wxGridCellStringRenderer::Draw(wxGrid& grid,
                                    wxGridCellAttr& attr,
                                    wxDC& dc,
                                    const wxRect& rectCell,
                                    int row, int col,
                                    bool isSelected)
{
    wxRect rect = rectCell;
    rect.Inflate(-1);

    // erase only this cells background, overflow cells should have been erased
    wxGridCellRenderer::Draw(grid, attr, dc, rectCell, row, col, isSelected);

    int hAlign, vAlign;
    attr.GetAlignment(&hAlign, &vAlign);

    int overflowCols = 0;

    if (attr.GetOverflow())
    {
        int cols = grid.GetNumberCols();
        int best_width = GetBestSize(grid,attr,dc,row,col).GetWidth();
        int cell_rows, cell_cols;
        attr.GetSize( &cell_rows, &cell_cols ); // shouldn't get here if <= 0
        if ((best_width > rectCell.width) && (col < cols) && grid.GetTable())
        {
            int i, c_cols, c_rows;
            for (i = col+cell_cols; i < cols; i++)
            {
                bool is_empty = true;
                for (int j=row; j < row + cell_rows; j++)
                {
                    // check w/ anchor cell for multicell block
                    grid.GetCellSize(j, i, &c_rows, &c_cols);
                    if (c_rows > 0)
                        c_rows = 0;
                    if (!grid.GetTable()->IsEmptyCell(j + c_rows, i))
                    {
                        is_empty = false;
                        break;
                    }
                }

                if (is_empty)
                    rect.width += grid.GetColSize(i);
                else
                {
                    i--;
                    break;
                }

                if (rect.width >= best_width)
                    break;
            }

            overflowCols = i - col - cell_cols + 1;
            if (overflowCols >= cols)
                overflowCols = cols - 1;
        }

        if (overflowCols > 0) // redraw overflow cells w/ proper hilight
        {
            hAlign = wxALIGN_LEFT; // if oveflowed then it's left aligned
            wxRect clip = rect;
            clip.x += rectCell.width;
            // draw each overflow cell individually
            int col_end = col+cell_cols + overflowCols;
            if (col_end >= grid.GetNumberCols())
                col_end = grid.GetNumberCols() - 1;
            for (int i = col+cell_cols; i <= col_end; i++)
            {
                clip.width = grid.GetColSize(i) - 1;
                dc.DestroyClippingRegion();
                dc.SetClippingRegion(clip);

                SetTextColoursAndFont(grid, attr, dc,
                        grid.IsInSelection(row,i));

                grid.DrawTextRectangle(dc, grid.GetCellValue(row, col),
                        rect, hAlign, vAlign);
                clip.x += grid.GetColSize(i) - 1;
            }

            rect = rectCell;
            rect.Inflate(-1);
            rect.width++;
            dc.DestroyClippingRegion();
        }
    }

    // now we only have to draw the text
    SetTextColoursAndFont(grid, attr, dc, isSelected);

    grid.DrawTextRectangle(dc, grid.GetCellValue(row, col),
                           rect, hAlign, vAlign);
}

// ----------------------------------------------------------------------------
// wxGridCellNumberRenderer
// ----------------------------------------------------------------------------

wxString wxGridCellNumberRenderer::GetString(const wxGrid& grid, int row, int 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;
}

void wxGridCellNumberRenderer::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);

    SetTextColoursAndFont(grid, attr, dc, isSelected);

    // draw the text right aligned by default
    int hAlign, vAlign;
    attr.GetAlignment(&hAlign, &vAlign);
    hAlign = wxALIGN_RIGHT;

    wxRect rect = rectCell;
    rect.Inflate(-1);

    grid.DrawTextRectangle(dc, GetString(grid, row, col), rect, hAlign, vAlign);
}

wxSize wxGridCellNumberRenderer::GetBestSize(wxGrid& grid,
                                             wxGridCellAttr& attr,
                                             wxDC& dc,
                                             int row, int col)
{
    return DoGetBestSize(attr, dc, GetString(grid, row, col));
}

// ----------------------------------------------------------------------------
// wxGridCellFloatRenderer
// ----------------------------------------------------------------------------

wxGridCellFloatRenderer::wxGridCellFloatRenderer(int width, int precision)
{
    SetWidth(width);
    SetPrecision(precision);
}

wxGridCellRenderer *wxGridCellFloatRenderer::Clone() const
{
    wxGridCellFloatRenderer *renderer = new wxGridCellFloatRenderer;
    renderer->m_width = m_width;
    renderer->m_precision = m_precision;
    renderer->m_format = m_format;

    return renderer;
}

wxString wxGridCellFloatRenderer::GetString(const wxGrid& grid, int row, int col)
{
    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 )
            {
                if ( m_precision == -1 )
                {
                    // default width/precision
                    m_format = _T("%f");
                }
                else
                {
                    m_format.Printf(_T("%%.%df"), m_precision);
                }
            }
            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)
{
    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 = wxALIGN_RIGHT;

    wxRect rect = rectCell;
    rect.Inflate(-1);

    grid.DrawTextRectangle(dc, GetString(grid, row, col), rect, hAlign, vAlign);
}

wxSize wxGridCellFloatRenderer::GetBestSize(wxGrid& grid,
                                            wxGridCellAttr& attr,
                                            wxDC& dc,
                                            int row, int col)
{
    return DoGetBestSize(attr, dc, GetString(grid, row, col));
}

void wxGridCellFloatRenderer::SetParameters(const wxString& params)
{
    if ( !params )
    {
        // reset to defaults
        SetWidth(-1);
        SetPrecision(-1);
    }
    else
    {
        wxString tmp = params.BeforeFirst(_T(','));
        if ( !tmp.empty() )
        {
            long width;
            if ( tmp.ToLong(&width) )
            {
                SetWidth((int)width);
            }
            else
            {
                wxLogDebug(_T("Invalid wxGridCellFloatRenderer width parameter string '%s ignored"), params.c_str());
            }
        }

        tmp = params.AfterFirst(_T(','));
        if ( !tmp.empty() )
        {
            long precision;
            if ( tmp.ToLong(&precision) )
            {
                SetPrecision((int)precision);
            }
            else
            {
                wxLogDebug(_T("Invalid wxGridCellFloatRenderer precision parameter string '%s ignored"), params.c_str());
            }
        }
    }
}

// ----------------------------------------------------------------------------
// wxGridCellBoolRenderer
// ----------------------------------------------------------------------------

wxSize wxGridCellBoolRenderer::ms_sizeCheckMark;

// FIXME these checkbox size calculations are really ugly...

// between checkmark and box
static const wxCoord wxGRID_CHECKMARK_MARGIN = 2;

wxSize wxGridCellBoolRenderer::GetBestSize(wxGrid& grid,
                                           wxGridCellAttr& WXUNUSED(attr),
                                           wxDC& WXUNUSED(dc),
                                           int WXUNUSED(row),
                                           int WXUNUSED(col))
{
    // compute it only once (no locks for MT safeness in GUI thread...)
    if ( !ms_sizeCheckMark.x )
    {
        // get checkbox size
        wxCheckBox *checkbox = new wxCheckBox(&grid, wxID_ANY, wxEmptyString);
        wxSize size = checkbox->GetBestSize();
        wxCoord checkSize = size.y + 2 * wxGRID_CHECKMARK_MARGIN;

        // FIXME wxGTK::wxCheckBox::GetBestSize() gives "wrong" result
#if defined(__WXGTK__) || defined(__WXMOTIF__)
        checkSize -= size.y / 2;
#endif

        delete checkbox;

        ms_sizeCheckMark.x = ms_sizeCheckMark.y = checkSize;
    }

    return ms_sizeCheckMark;
}

void wxGridCellBoolRenderer::Draw(wxGrid& grid,
                                  wxGridCellAttr& attr,
                                  wxDC& dc,
                                  const wxRect& rect,
                                  int row, int col,
                                  bool isSelected)
{
    wxGridCellRenderer::Draw(grid, attr, dc, rect, row, col, isSelected);

    // draw a check mark in the centre (ignoring alignment - TODO)
    wxSize size = GetBestSize(grid, attr, dc, 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;
    }

    // draw a border around checkmark
    int vAlign, hAlign;
    attr.GetAlignment(& hAlign, &vAlign);

    wxRect rectBorder;
    if (hAlign == wxALIGN_CENTRE)
    {
        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;
    }
    else if (hAlign == wxALIGN_LEFT)
    {
        rectBorder.x = rect.x + 2;
        rectBorder.y = rect.y + rect.height / 2 - size.y / 2;
        rectBorder.width = size.x;
        rectBorder.height = size.y;
    }
    else if (hAlign == wxALIGN_RIGHT)
    {
        rectBorder.x = rect.x + rect.width - size.x - 2;
        rectBorder.y = rect.y + rect.height / 2 - size.y / 2;
        rectBorder.width = size.x;
        rectBorder.height = size.y;
    }

    bool value;
    if ( grid.GetTable()->CanGetValueAs(row, col, wxGRID_VALUE_BOOL) )
        value = grid.GetTable()->GetValueAsBool(row, col);
    else
    {
        wxString cellval( grid.GetTable()->GetValue(row, col) );
        value = !( !cellval || (cellval == wxT("0")) );
    }

    if ( value )
    {
        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
        rectMark.Inflate(-wxGRID_CHECKMARK_MARGIN);
#endif

        dc.SetTextForeground(attr.GetTextColour());
        dc.DrawCheckMark(rectMark);
    }

    dc.SetBrush(*wxTRANSPARENT_BRUSH);
    dc.SetPen(wxPen(attr.GetTextColour(), 1, wxSOLID));
    dc.DrawRectangle(rectBorder);
}

// ----------------------------------------------------------------------------
// wxGridCellAttr
// ----------------------------------------------------------------------------

void wxGridCellAttr::Init(wxGridCellAttr *attrDefault)
{
    m_nRef = 1;

    m_isReadOnly = Unset;

    m_renderer = NULL;
    m_editor = NULL;

    m_attrkind = wxGridCellAttr::Cell;

    m_sizeRows = m_sizeCols = 1;
    m_overflow = UnsetOverflow;

    SetDefAttr(attrDefault);
}

wxGridCellAttr *wxGridCellAttr::Clone() const
{
    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 );

    if ( m_renderer )
    {
        attr->SetRenderer(m_renderer);
        m_renderer->IncRef();
    }
    if ( m_editor )
    {
        attr->SetEditor(m_editor);
        m_editor->IncRef();
    }

    if ( IsReadOnly() )
        attr->SetReadOnly();

    attr->SetKind( m_attrkind );

    return attr;
}

void wxGridCellAttr::MergeWith(wxGridCellAttr *mergefrom)
{
    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() )
    {
        int hAlign, vAlign;
        mergefrom->GetAlignment( &hAlign, &vAlign);
        SetAlignment(hAlign, vAlign);
    }
    if ( !HasSize() && mergefrom->HasSize() )
        mergefrom->GetSize( &m_sizeRows, &m_sizeCols );

    // 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 wxGridCellAttr::SetSize(int num_rows, int num_cols)
{
    // The size of a cell is normally 1,1

    // 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.

    // Size of 0,0 is NOT valid, neither is <=0 and any positive value

    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 postive values or negative/zero values"));

    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
    {
        wxFAIL_MSG(wxT("Missing default cell attribute"));
        return wxNullColour;
    }
}

const wxColour& wxGridCellAttr::GetBackgroundColour() const
{
    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;
    }
}

const wxFont& wxGridCellAttr::GetFont() const
{
    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 wxGridCellAttr::GetAlignment(int *hAlign, int *vAlign) const
{
    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 wxGridCellAttr::GetSize( int *num_rows, int *num_cols ) const
{
    if ( num_rows )
        *num_rows = m_sizeRows;
    if ( num_cols )
        *num_cols = m_sizeCols;
}

// 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.

wxGridCellRenderer* wxGridCellAttr::GetRenderer(wxGrid* grid, int row, int col) const
{
    wxGridCellRenderer *renderer;

    if ( m_renderer && this != m_defGridAttr )
    {
        // use the cells renderer if it has one
        renderer = m_renderer;
        renderer->IncRef();
    }
    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);
        }
        else
        {
            renderer = NULL;
        }

        if ( !renderer )
        {
            if (m_defGridAttr &&  this != m_defGridAttr )
            {
                // 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();
            }
        }
    }

    // we're supposed to always find something
    wxASSERT_MSG(renderer, wxT("Missing default cell renderer"));

    return renderer;
}

// same as above, except for s/renderer/editor/g
wxGridCellEditor* wxGridCellAttr::GetEditor(wxGrid* grid, int row, int col) const
{
    wxGridCellEditor *editor;

    if ( m_editor && this != m_defGridAttr )
    {
        // 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);
        }
        else
        {
            editor = NULL;
        }

        if ( !editor )
        {
            if ( m_defGridAttr && this != m_defGridAttr )
            {
                // 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();
            }
        }
    }

    // we're supposed to always find something
    wxASSERT_MSG(editor, wxT("Missing default cell editor"));

    return editor;
}

// ----------------------------------------------------------------------------
// wxGridCellAttrData
// ----------------------------------------------------------------------------

void wxGridCellAttrData::SetAttr(wxGridCellAttr *attr, int row, int col)
{
    int n = FindIndex(row, col);
    if ( n == wxNOT_FOUND )
    {
        // add the attribute
        m_attrs.Add(new wxGridCellWithAttr(row, col, attr));
    }
    else
    {
        // free the old attribute
        m_attrs[(size_t)n].attr->DecRef();

        if ( attr )
        {
            // change the attribute
            m_attrs[(size_t)n].attr = attr;
        }
        else
        {
            // remove this attribute
            m_attrs.RemoveAt((size_t)n);
        }
    }
}

wxGridCellAttr *wxGridCellAttrData::GetAttr(int row, int col) const
{
    wxGridCellAttr *attr = (wxGridCellAttr *)NULL;

    int n = FindIndex(row, col);
    if ( n != wxNOT_FOUND )
    {
        attr = m_attrs[(size_t)n].attr;
        attr->IncRef();
    }

    return attr;
}

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
                    // No need to DecRef the attribute itself since this is
                    // done be wxGridCellWithAttr's destructor!
                    m_attrs.RemoveAt(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
                    // No need to DecRef the attribute itself since this is
                    // done be wxGridCellWithAttr's destructor!
                    m_attrs.RemoveAt(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++ )
    {
        const wxGridCellCoords& coords = m_attrs[n].coords;
        if ( (coords.GetRow() == row) && (coords.GetCol() == col) )
        {
            return n;
        }
    }

    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 i = m_rowsOrCols.Index(rowOrCol);
    if ( i == wxNOT_FOUND )
    {
        // add the attribute
        m_rowsOrCols.Add(rowOrCol);
        m_attrs.Add(attr);
    }
    else
    {
        size_t n = (size_t)i;
        if ( attr )
        {
            // change the attribute
            m_attrs[n]->DecRef();
            m_attrs[n] = attr;
        }
        else
        {
            // remove this attribute
            m_attrs[n]->DecRef();
            m_rowsOrCols.RemoveAt(n);
            m_attrs.RemoveAt(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(n);
                    m_attrs[n]->DecRef();
                    m_attrs.RemoveAt(n);
                    n--;
                    count--;
                }
            }
        }
    }
}

// ----------------------------------------------------------------------------
// wxGridCellAttrProvider
// ----------------------------------------------------------------------------

wxGridCellAttrProvider::wxGridCellAttrProvider()
{
    m_data = (wxGridCellAttrProviderData *)NULL;
}

wxGridCellAttrProvider::~wxGridCellAttrProvider()
{
    delete m_data;
}

void wxGridCellAttrProvider::InitData()
{
    m_data = new wxGridCellAttrProviderData;
}

wxGridCellAttr *wxGridCellAttrProvider::GetAttr(int row, int col,
                                                wxGridCellAttr::wxAttrKind  kind ) const
{
    wxGridCellAttr *attr = (wxGridCellAttr *)NULL;
    if ( m_data )
    {
        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);

                    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;

            case (wxGridCellAttr::Cell):
                attr = m_data->m_cellAttrs.GetAttr(row, col);
                break;

            case (wxGridCellAttr::Col):
                attr = m_data->m_colAttrs.GetAttr(col);
                break;

            case (wxGridCellAttr::Row):
                attr = m_data->m_rowAttrs.GetAttr(row);
                break;

            default:
                // unused as yet...
                // (wxGridCellAttr::Default):
                // (wxGridCellAttr::Merged):
                break;
        }
    }

    return attr;
}

void wxGridCellAttrProvider::SetAttr(wxGridCellAttr *attr,
                                     int row, int col)
{
    if ( !m_data )
        InitData();

    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 );
    }
}

// ----------------------------------------------------------------------------
// wxGridTypeRegistry
// ----------------------------------------------------------------------------

wxGridTypeRegistry::~wxGridTypeRegistry()
{
    size_t count = m_typeinfo.Count();
    for ( size_t i = 0; i < count; i++ )
        delete m_typeinfo[i];
}

void wxGridTypeRegistry::RegisterDataType(const wxString& typeName,
                                          wxGridCellRenderer* renderer,
                                          wxGridCellEditor* editor)
{
    wxGridDataTypeInfo* info = new wxGridDataTypeInfo(typeName, renderer, editor);

    // 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);
    }
}

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;
        }
    }

    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 )
        {
            RegisterDataType(wxGRID_VALUE_STRING,
                             new wxGridCellStringRenderer,
                             new wxGridCellTextEditor);
        }
        else
#endif // wxUSE_TEXTCTRL
#if wxUSE_CHECKBOX
        if ( typeName == wxGRID_VALUE_BOOL )
        {
            RegisterDataType(wxGRID_VALUE_BOOL,
                             new wxGridCellBoolRenderer,
                             new wxGridCellBoolEditor);
        }
        else
#endif // wxUSE_CHECKBOX
#if wxUSE_TEXTCTRL
        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
#endif // wxUSE_TEXTCTRL
#if wxUSE_COMBOBOX
        if ( typeName == wxGRID_VALUE_CHOICE )
        {
            RegisterDataType(wxGRID_VALUE_CHOICE,
                             new wxGridCellStringRenderer,
                             new wxGridCellChoiceEditor);
        }
        else
#endif // wxUSE_COMBOBOX
        {
            return wxNOT_FOUND;
        }

        // we get here only if just added the entry for this type, so return
        // the last index
        index = m_typeinfo.GetCount() - 1;
    }

    return index;
}

int wxGridTypeRegistry::FindOrCloneDataType(const wxString& typeName)
{
    int index = FindDataType(typeName);
    if ( index == wxNOT_FOUND )
    {
        // 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 )
        {
            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();

        // do it even if there are no parameters to reset them to defaults
        wxString params = typeName.AfterFirst(_T(':'));
        renderer->SetParameters(params);
        editor->SetParameters(params);

        // register the new typename
        RegisterDataType(typeName, renderer, editor);

        // we just registered it, it's the last one
        index = m_typeinfo.GetCount() - 1;
    }

    return index;
}

wxGridCellRenderer* wxGridTypeRegistry::GetRenderer(int index)
{
    wxGridCellRenderer* renderer = m_typeinfo[index]->m_renderer;
    if (renderer)
        renderer->IncRef();

    return renderer;
}

wxGridCellEditor* wxGridTypeRegistry::GetEditor(int index)
{
    wxGridCellEditor* editor = m_typeinfo[index]->m_editor;
    if (editor)
        editor->IncRef();

    return editor;
}

// ----------------------------------------------------------------------------
// wxGridTableBase
// ----------------------------------------------------------------------------

IMPLEMENT_ABSTRACT_CLASS( wxGridTableBase, wxObject )

wxGridTableBase::wxGridTableBase()
{
    m_view = (wxGrid *) NULL;
    m_attrProvider = (wxGridCellAttrProvider *) NULL;
}

wxGridTableBase::~wxGridTableBase()
{
    delete m_attrProvider;
}

void wxGridTableBase::SetAttrProvider(wxGridCellAttrProvider *attrProvider)
{
    delete m_attrProvider;
    m_attrProvider = attrProvider;
}

bool wxGridTableBase::CanHaveAttributes()
{
    if ( ! GetAttrProvider() )
    {
        // use the default attr provider by default
        SetAttrProvider(new wxGridCellAttrProvider);
    }

    return true;
}

wxGridCellAttr *wxGridTableBase::GetAttr(int row, int col, wxGridCellAttr::wxAttrKind  kind)
{
    if ( m_attrProvider )
        return m_attrProvider->GetAttr(row, col, kind);
    else
        return (wxGridCellAttr *)NULL;
}

void wxGridTableBase::SetAttr(wxGridCellAttr* attr, int row, int col)
{
    if ( m_attrProvider )
    {
        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);
    }
}

void wxGridTableBase::SetRowAttr(wxGridCellAttr *attr, int row)
{
    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 wxGridTableBase::SetColAttr(wxGridCellAttr *attr, int col)
{
    if ( m_attrProvider )
    {
        attr->SetKind(wxGridCellAttr::Col);
        m_attrProvider->SetColAttr(attr, col);
    }
    else
    {
        // as we take ownership of the pointer and don't store it, we must
        // free it now
        wxSafeDecRef(attr);
    }
}

bool wxGridTableBase::InsertRows( size_t WXUNUSED(pos),
                                  size_t WXUNUSED(numRows) )
{
    wxFAIL_MSG( wxT("Called grid table class function InsertRows\nbut your derived table class does not override this function") );

    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"));

    return false;
}

bool wxGridTableBase::DeleteRows( size_t WXUNUSED(pos),
                                  size_t WXUNUSED(numRows) )
{
    wxFAIL_MSG( wxT("Called grid table class function DeleteRows\nbut your derived table class does not override this function"));

    return false;
}

bool wxGridTableBase::InsertCols( size_t WXUNUSED(pos),
                                  size_t WXUNUSED(numCols) )
{
    wxFAIL_MSG( wxT("Called grid table class function InsertCols\nbut your derived table class does not override this function"));

    return false;
}

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;
}

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"));

    return false;
}

wxString wxGridTableBase::GetRowLabelValue( int row )
{
    wxString s;
 
    // RD: Starting the rows at zero confuses users,
    // no matter how much it makes sense to us geeks.
    s << row + 1;

    return s;
}

wxString wxGridTableBase::GetColLabelValue( int col )
{
    // 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++ )
    {
        s += (wxChar) (_T('A') + (wxChar)(col % 26));
        col = col / 26 - 1;
        if ( col < 0 )
            break;
    }

    // reverse the string...
    wxString s2;
    for ( i = 0;  i < n;  i++ )
    {
        s2 += s[n - i - 1];
    }

    return s2;
}

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;
}

bool wxGridTableBase::CanSetValueAs( int row, int col, const wxString& typeName )
{
    return CanGetValueAs(row, col, typeName);
}

long wxGridTableBase::GetValueAsLong( int WXUNUSED(row), int WXUNUSED(col) )
{
    return 0;
}

double wxGridTableBase::GetValueAsDouble( int WXUNUSED(row), int WXUNUSED(col) )
{
    return 0.0;
}

bool wxGridTableBase::GetValueAsBool( int WXUNUSED(row), int WXUNUSED(col) )
{
    return false;
}

void wxGridTableBase::SetValueAsLong( int WXUNUSED(row), int WXUNUSED(col),
                                      long WXUNUSED(value) )
{
}

void wxGridTableBase::SetValueAsDouble( int WXUNUSED(row), int WXUNUSED(col),
                                        double WXUNUSED(value) )
{
}

void wxGridTableBase::SetValueAsBool( int WXUNUSED(row), int WXUNUSED(col),
                                      bool WXUNUSED(value) )
{
}

void* wxGridTableBase::GetValueAsCustom( int WXUNUSED(row), int WXUNUSED(col),
                                         const wxString& WXUNUSED(typeName) )
{
    return NULL;
}

void  wxGridTableBase::SetValueAsCustom( int WXUNUSED(row), int WXUNUSED(col),
                                         const wxString& WXUNUSED(typeName),
                                         void* WXUNUSED(value) )
{
}

//////////////////////////////////////////////////////////////////////
//
// Message class for the grid table to send requests and notifications
// to the grid view
//

wxGridTableMessage::wxGridTableMessage()
{
    m_table = (wxGridTableBase *) NULL;
    m_id = -1;
    m_comInt1 = -1;
    m_comInt2 = -1;
}

wxGridTableMessage::wxGridTableMessage( wxGridTableBase *table, int id,
                                        int commandInt1, int commandInt2 )
{
    m_table = table;
    m_id = id;
    m_comInt1 = commandInt1;
    m_comInt2 = commandInt2;
}

//////////////////////////////////////////////////////////////////////
//
// 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.
//

WX_DEFINE_OBJARRAY(wxGridStringArray)

IMPLEMENT_DYNAMIC_CLASS( wxGridStringTable, wxGridTableBase )

wxGridStringTable::wxGridStringTable()
        : wxGridTableBase()
{
}

wxGridStringTable::wxGridStringTable( int numRows, int numCols )
        : wxGridTableBase()
{
    m_data.Alloc( numRows );

    wxArrayString sa;
    sa.Alloc( numCols );
    sa.Add( wxEmptyString, numCols );

    m_data.Add( sa, numRows );
}

wxGridStringTable::~wxGridStringTable()
{
}

int wxGridStringTable::GetNumberRows()
{
    return m_data.GetCount();
}

int wxGridStringTable::GetNumberCols()
{
    if ( m_data.GetCount() > 0 )
        return m_data[0].GetCount();
    else
        return 0;
}

wxString wxGridStringTable::GetValue( int row, int col )
{
    wxCHECK_MSG( (row < GetNumberRows()) && (col < GetNumberCols()),
                 wxEmptyString,
                 _T("invalid row or column index in wxGridStringTable") );

    return m_data[row][col];
}

void wxGridStringTable::SetValue( int row, int col, const wxString& value )
{
    wxCHECK_RET( (row < GetNumberRows()) && (col < GetNumberCols()),
                 _T("invalid row or column index in wxGridStringTable") );

    m_data[row][col] = value;
}

bool wxGridStringTable::IsEmptyCell( int row, int col )
{
    wxCHECK_MSG( (row < GetNumberRows()) && (col < GetNumberCols()),
                 true,
                  _T("invalid row or column index in wxGridStringTable") );

    return (m_data[row][col] == wxEmptyString);
}

void wxGridStringTable::Clear()
{
    int row, col;
    int numRows, numCols;

    numRows = m_data.GetCount();
    if ( numRows > 0 )
    {
        numCols = m_data[0].GetCount();

        for ( row = 0;  row < numRows;  row++ )
        {
            for ( col = 0;  col < numCols;  col++ )
            {
                m_data[row][col] = wxEmptyString;
            }
        }
    }
}

bool wxGridStringTable::InsertRows( size_t pos, size_t numRows )
{
    size_t curNumRows = m_data.GetCount();
    size_t curNumCols = ( curNumRows > 0 ? m_data[0].GetCount() :
                          ( GetView() ? GetView()->GetNumberCols() : 0 ) );

    if ( pos >= curNumRows )
    {
        return AppendRows( numRows );
    }

    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 );

        GetView()->ProcessTableMessage( msg );
    }

    return true;
}

bool wxGridStringTable::AppendRows( size_t numRows )
{
    size_t curNumRows = m_data.GetCount();
    size_t curNumCols = ( curNumRows > 0
                         ? m_data[0].GetCount()
                         : ( GetView() ? GetView()->GetNumberCols() : 0 ) );

    wxArrayString sa;
    if ( curNumCols > 0 )
    {
        sa.Alloc( curNumCols );
        sa.Add( wxEmptyString, curNumCols );
    }

    m_data.Add( sa, numRows );

    if ( GetView() )
    {
        wxGridTableMessage msg( this,
                                wxGRIDTABLE_NOTIFY_ROWS_APPENDED,
                                numRows );

        GetView()->ProcessTableMessage( msg );
    }

    return true;
}

bool wxGridStringTable::DeleteRows( size_t pos, size_t numRows )
{
    size_t curNumRows = m_data.GetCount();

    if ( pos >= curNumRows )
    {
        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;
    }

    if ( numRows >= curNumRows )
    {
        m_data.Clear();
    }
    else
    {
        m_data.RemoveAt( pos, numRows );
    }

    if ( GetView() )
    {
        wxGridTableMessage msg( this,
                                wxGRIDTABLE_NOTIFY_ROWS_DELETED,
                                pos,
                                numRows );

        GetView()->ProcessTableMessage( msg );
    }

    return true;
}

bool wxGridStringTable::InsertCols( size_t pos, size_t numCols )
{
    size_t row, col;

    size_t curNumRows = m_data.GetCount();
    size_t curNumCols = ( curNumRows > 0
                         ? m_data[0].GetCount()
                         : ( GetView() ? GetView()->GetNumberCols() : 0 ) );

    if ( pos >= curNumCols )
    {
        return AppendCols( numCols );
    }

    for ( row = 0;  row < curNumRows;  row++ )
    {
        for ( col = pos;  col < pos + numCols;  col++ )
        {
            m_data[row].Insert( wxEmptyString, col );
        }
    }

    if ( GetView() )
    {
        wxGridTableMessage msg( this,
                                wxGRIDTABLE_NOTIFY_COLS_INSERTED,
                                pos,
                                numCols );

        GetView()->ProcessTableMessage( msg );
    }

    return true;
}

bool wxGridStringTable::AppendCols( size_t numCols )
{
    size_t row;

    size_t curNumRows = m_data.GetCount();

#if 0
    if ( !curNumRows )
    {
        // TODO: something better than this ?
        //
        wxFAIL_MSG( wxT("Unable to append cols to a grid table with no rows.\nCall AppendRows() first") );
        return false;
    }
#endif

    for ( row = 0;  row < curNumRows;  row++ )
    {
        m_data[row].Add( wxEmptyString, numCols );
    }

    if ( GetView() )
    {
        wxGridTableMessage msg( this,
                                wxGRIDTABLE_NOTIFY_COLS_APPENDED,
                                numCols );

        GetView()->ProcessTableMessage( msg );
    }

    return true;
}

bool wxGridStringTable::DeleteCols( size_t pos, size_t numCols )
{
    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 )
    {
        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;
    }

    if ( numCols > curNumCols - pos )
    {
        numCols = curNumCols - pos;
    }

    for ( row = 0;  row < curNumRows;  row++ )
    {
        if ( numCols >= curNumCols )
        {
            m_data[row].Clear();
        }
        else
        {
            m_data[row].RemoveAt( pos, numCols );
        }
    }

    if ( GetView() )
    {
        wxGridTableMessage msg( this,
                                wxGRIDTABLE_NOTIFY_COLS_DELETED,
                                pos,
                                numCols );

        GetView()->ProcessTableMessage( msg );
    }

    return true;
}

wxString wxGridStringTable::GetRowLabelValue( int row )
{
    if ( row > (int)(m_rowLabels.GetCount()) - 1 )
    {
        // using default label
        //
        return wxGridTableBase::GetRowLabelValue( row );
    }
    else
    {
        return m_rowLabels[row];
    }
}

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( wxGridRowLabelWindow, wxWindow )

BEGIN_EVENT_TABLE( wxGridRowLabelWindow, wxWindow )
    EVT_PAINT( wxGridRowLabelWindow::OnPaint )
    EVT_MOUSEWHEEL( wxGridRowLabelWindow::OnMouseWheel)
    EVT_MOUSE_EVENTS( wxGridRowLabelWindow::OnMouseEvent )
    EVT_KEY_DOWN( wxGridRowLabelWindow::OnKeyDown )
    EVT_KEY_UP( wxGridRowLabelWindow::OnKeyUp )
    EVT_CHAR ( wxGridRowLabelWindow::OnChar )
END_EVENT_TABLE()

wxGridRowLabelWindow::wxGridRowLabelWindow( wxGrid *parent,
                                            wxWindowID id,
                                            const wxPoint &pos, const wxSize &size )
  : wxWindow( parent, id, pos, size, wxWANTS_CHARS|wxBORDER_NONE|wxFULL_REPAINT_ON_RESIZE )
{
    m_owner = parent;
}

void wxGridRowLabelWindow::OnPaint( wxPaintEvent& WXUNUSED(event) )
{
    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 );

    wxArrayInt rows = m_owner->CalcRowLabelsExposed( GetUpdateRegion() );
    m_owner->DrawRowLabels( dc , rows );
}

void wxGridRowLabelWindow::OnMouseEvent( wxMouseEvent& event )
{
    m_owner->ProcessRowLabelMouseEvent( event );
}

void wxGridRowLabelWindow::OnMouseWheel( wxMouseEvent& event )
{
    m_owner->GetEventHandler()->ProcessEvent(event);
}

// 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 )
{
    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
        event.Skip();
}

void wxGridRowLabelWindow::OnKeyUp( wxKeyEvent& event )
{
    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
        event.Skip();
}

void wxGridRowLabelWindow::OnChar( wxKeyEvent& event )
{
    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
        event.Skip();
}

//////////////////////////////////////////////////////////////////////

IMPLEMENT_DYNAMIC_CLASS( wxGridColLabelWindow, wxWindow )

BEGIN_EVENT_TABLE( wxGridColLabelWindow, wxWindow )
    EVT_PAINT( wxGridColLabelWindow::OnPaint )
    EVT_MOUSEWHEEL( wxGridColLabelWindow::OnMouseWheel)
    EVT_MOUSE_EVENTS( wxGridColLabelWindow::OnMouseEvent )
    EVT_KEY_DOWN( wxGridColLabelWindow::OnKeyDown )
    EVT_KEY_UP( wxGridColLabelWindow::OnKeyUp )
    EVT_CHAR ( wxGridColLabelWindow::OnChar )
END_EVENT_TABLE()

wxGridColLabelWindow::wxGridColLabelWindow( wxGrid *parent,
                                            wxWindowID id,
                                            const wxPoint &pos, const wxSize &size )
  : wxWindow( parent, id, pos, size, wxWANTS_CHARS|wxBORDER_NONE|wxFULL_REPAINT_ON_RESIZE )
{
    m_owner = parent;
}

void wxGridColLabelWindow::OnPaint( wxPaintEvent& WXUNUSED(event) )
{
    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 );

    wxArrayInt cols = m_owner->CalcColLabelsExposed( GetUpdateRegion() );
    m_owner->DrawColLabels( dc , cols );
}

void wxGridColLabelWindow::OnMouseEvent( wxMouseEvent& event )
{
    m_owner->ProcessColLabelMouseEvent( event );
}

void wxGridColLabelWindow::OnMouseWheel( wxMouseEvent& event )
{
    m_owner->GetEventHandler()->ProcessEvent(event);
}

// 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->GetEventHandler()->ProcessEvent( event ) )
        event.Skip();
}

void wxGridColLabelWindow::OnKeyUp( wxKeyEvent& event )
{
    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
        event.Skip();
}

void wxGridColLabelWindow::OnChar( wxKeyEvent& event )
{
    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
        event.Skip();
}

//////////////////////////////////////////////////////////////////////

IMPLEMENT_DYNAMIC_CLASS( wxGridCornerLabelWindow, wxWindow )

BEGIN_EVENT_TABLE( wxGridCornerLabelWindow, wxWindow )
    EVT_MOUSEWHEEL( wxGridCornerLabelWindow::OnMouseWheel)
    EVT_MOUSE_EVENTS( wxGridCornerLabelWindow::OnMouseEvent )
    EVT_PAINT( wxGridCornerLabelWindow::OnPaint)
    EVT_KEY_DOWN( wxGridCornerLabelWindow::OnKeyDown )
    EVT_KEY_UP( wxGridCornerLabelWindow::OnKeyUp )
    EVT_CHAR ( wxGridCornerLabelWindow::OnChar )
END_EVENT_TABLE()

wxGridCornerLabelWindow::wxGridCornerLabelWindow( wxGrid *parent,
                                                  wxWindowID id,
                                                  const wxPoint &pos, const wxSize &size )
  : wxWindow( parent, id, pos, size, wxWANTS_CHARS|wxBORDER_NONE|wxFULL_REPAINT_ON_RESIZE )
{
    m_owner = parent;
}

void wxGridCornerLabelWindow::OnPaint( wxPaintEvent& WXUNUSED(event) )
{
    wxPaintDC dc(this);

    int client_height = 0;
    int client_width = 0;
    GetClientSize( &client_width, &client_height );

    // VZ: any reason for this ifdef? (FIXME)
#ifdef __WXGTK__
    wxRect rect;
    rect.SetX( 1 );
    rect.SetY( 1 );
    rect.SetWidth( client_width - 2 );
    rect.SetHeight( client_height - 2 );

    wxRendererNative::Get().DrawHeaderButton( this, dc, rect, 0 );
#else // !__WXGTK__
    dc.SetPen( wxPen(wxSystemSettings::GetColour(wxSYS_COLOUR_3DDKSHADOW),1, wxSOLID) );
    dc.DrawLine( client_width-1, client_height-1, client_width-1, 0 );
    dc.DrawLine( client_width-1, client_height-1, 0, client_height-1 );
    dc.DrawLine( 0, 0, client_width, 0 );
    dc.DrawLine( 0, 0, 0, client_height );

    dc.SetPen( *wxWHITE_PEN );
    dc.DrawLine( 1, 1, client_width-1, 1 );
    dc.DrawLine( 1, 1, 1, client_height-1 );
#endif // __WXGTK__/!__WXGTK__
}

void wxGridCornerLabelWindow::OnMouseEvent( wxMouseEvent& event )
{
    m_owner->ProcessCornerLabelMouseEvent( event );
}

void wxGridCornerLabelWindow::OnMouseWheel( wxMouseEvent& event )
{
    m_owner->GetEventHandler()->ProcessEvent(event);
}

// 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->GetEventHandler()->ProcessEvent( event ) )
        event.Skip();
}

void wxGridCornerLabelWindow::OnKeyUp( wxKeyEvent& event )
{
    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
        event.Skip();
}

void wxGridCornerLabelWindow::OnChar( wxKeyEvent& event )
{
    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
        event.Skip();
}

//////////////////////////////////////////////////////////////////////

IMPLEMENT_DYNAMIC_CLASS( wxGridWindow, wxWindow )

BEGIN_EVENT_TABLE( wxGridWindow, wxWindow )
    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()

wxGridWindow::wxGridWindow( wxGrid *parent,
                            wxGridRowLabelWindow *rowLblWin,
                            wxGridColLabelWindow *colLblWin,
                            wxWindowID id,
                            const wxPoint &pos,
                            const wxSize &size )
            : wxWindow( parent, id, pos, size, wxWANTS_CHARS | wxBORDER_NONE | wxCLIP_CHILDREN|wxFULL_REPAINT_ON_RESIZE,
                        wxT("grid window") )
{
    m_owner = parent;
    m_rowLabelWin = rowLblWin;
    m_colLabelWin = colLblWin;
}

void wxGridWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
{
    wxPaintDC dc( this );
    m_owner->PrepareDC( dc );
    wxRegion reg = GetUpdateRegion();
    wxGridCellCoordsArray DirtyCells = m_owner->CalcCellsExposed( reg );
    m_owner->DrawGridCellArea( dc , DirtyCells);

#if WXGRID_DRAW_LINES
    m_owner->DrawAllGridLines( dc, reg );
#endif

    m_owner->DrawGridSpace( dc );
    m_owner->DrawHighlight( dc , DirtyCells );
}

void wxGridWindow::ScrollWindow( int dx, int dy, const wxRect *rect )
{
    wxWindow::ScrollWindow( dx, dy, rect );
    m_rowLabelWin->ScrollWindow( 0, dy, rect );
    m_colLabelWin->ScrollWindow( dx, 0, rect );
}

void wxGridWindow::OnMouseEvent( wxMouseEvent& event )
{
    if (event.ButtonDown(wxMOUSE_BTN_LEFT) && FindFocus() != this)
        SetFocus();

    m_owner->ProcessGridCellMouseEvent( event );
}

void wxGridWindow::OnMouseWheel( wxMouseEvent& event )
{
    m_owner->GetEventHandler()->ProcessEvent(event);
}

// 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 )
{
    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
        event.Skip();
}

void wxGridWindow::OnKeyUp( wxKeyEvent& event )
{
    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
        event.Skip();
}

void wxGridWindow::OnChar( wxKeyEvent& event )
{
    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
        event.Skip();
}

void wxGridWindow::OnEraseBackground( wxEraseEvent& WXUNUSED(event) )
{
}

void wxGridWindow::OnFocus(wxFocusEvent& event)
{
    if ( !m_owner->GetEventHandler()->ProcessEvent( event ) )
        event.Skip();
}

//////////////////////////////////////////////////////////////////////

// Internal Helper function for computing 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 speed up the search!

// Internal helper macros for simpler use of that function

static int CoordToRowOrCol(int coord, int defaultDist, int minDist,
                           const wxArrayInt& BorderArray, int nMax,
                           bool clipToMinMax);

#define internalXToCol(x) CoordToRowOrCol(x, m_defaultColWidth, \
                                          m_minAcceptableColWidth, \
                                          m_colRights, m_numCols, true)
#define internalYToRow(y) CoordToRowOrCol(y, m_defaultRowHeight, \
                                          m_minAcceptableRowHeight, \
                                          m_rowBottoms, m_numRows, true)
/////////////////////////////////////////////////////////////////////

#if wxUSE_EXTENDED_RTTI
WX_DEFINE_FLAGS( wxGridStyle )

wxBEGIN_FLAGS( wxGridStyle )
    // new style border flags, we put them first to
    // use them for streaming out
    wxFLAGS_MEMBER(wxBORDER_SIMPLE)
    wxFLAGS_MEMBER(wxBORDER_SUNKEN)
    wxFLAGS_MEMBER(wxBORDER_DOUBLE)
    wxFLAGS_MEMBER(wxBORDER_RAISED)
    wxFLAGS_MEMBER(wxBORDER_STATIC)
    wxFLAGS_MEMBER(wxBORDER_NONE)

    // old style border flags
    wxFLAGS_MEMBER(wxSIMPLE_BORDER)
    wxFLAGS_MEMBER(wxSUNKEN_BORDER)
    wxFLAGS_MEMBER(wxDOUBLE_BORDER)
    wxFLAGS_MEMBER(wxRAISED_BORDER)
    wxFLAGS_MEMBER(wxSTATIC_BORDER)
    wxFLAGS_MEMBER(wxBORDER)

    // standard window styles
    wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
    wxFLAGS_MEMBER(wxCLIP_CHILDREN)
    wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
    wxFLAGS_MEMBER(wxWANTS_CHARS)
    wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
    wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
    wxFLAGS_MEMBER(wxVSCROLL)
    wxFLAGS_MEMBER(wxHSCROLL)

wxEND_FLAGS( wxGridStyle )

IMPLEMENT_DYNAMIC_CLASS_XTI(wxGrid, wxScrolledWindow,"wx/grid.h")

wxBEGIN_PROPERTIES_TABLE(wxGrid)
    wxHIDE_PROPERTY( Children )
    wxPROPERTY_FLAGS( WindowStyle , wxGridStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
wxEND_PROPERTIES_TABLE()

wxBEGIN_HANDLERS_TABLE(wxGrid)
wxEND_HANDLERS_TABLE()

wxCONSTRUCTOR_5( wxGrid , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size , long , WindowStyle )

/*