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[wxWidgets.git] / src / generic / datavgen.cpp
index e84b872f4bfbbb1cfcf0001bff4dc400eb2eaf63..68c7d4bd0914e1ca6862234815675849cc8fe1d5 100644 (file)
@@ -2,6 +2,7 @@
 // Name:        src/generic/datavgen.cpp
 // Purpose:     wxDataViewCtrl generic implementation
 // Author:      Robert Roebling
+// Modified by: Francesco Montorsi, Guru Kathiresan, Bo Yang
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling
 // Licence:     wxWindows licence
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
 #if wxUSE_DATAVIEWCTRL
 
 #include "wx/dataview.h"
 #ifdef wxUSE_GENERICDATAVIEWCTRL
 
 #ifndef WX_PRECOMP
+    #ifdef __WXMSW__
+        #include "wx/msw/private.h"
+        #include "wx/msw/wrapwin.h"
+        #include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
+    #endif
     #include "wx/sizer.h"
     #include "wx/log.h"
+    #include "wx/dcclient.h"
+    #include "wx/timer.h"
+    #include "wx/settings.h"
+    #include "wx/msgdlg.h"
+    #include "wx/dcscreen.h"
+    #include "wx/frame.h"
 #endif
 
 #include "wx/stockitem.h"
-#include "wx/dcclient.h"
 #include "wx/calctrl.h"
 #include "wx/popupwin.h"
 #include "wx/renderer.h"
-#include "wx/timer.h"
-#include "wx/settings.h"
+#include "wx/dcbuffer.h"
+#include "wx/icon.h"
+#include "wx/list.h"
+#include "wx/listimpl.cpp"
+#include "wx/imaglist.h"
+#include "wx/headerctrl.h"
+#include "wx/dnd.h"
+#include "wx/stopwatch.h"
+
+//-----------------------------------------------------------------------------
+// classes
+//-----------------------------------------------------------------------------
+
+class wxDataViewColumn;
+class wxDataViewHeaderWindow;
+class wxDataViewCtrl;
+
+//-----------------------------------------------------------------------------
+// classes
+//-----------------------------------------------------------------------------
+
+static const int SCROLL_UNIT_X = 15;
+
+// the cell padding on the left/right
+static const int PADDING_RIGHTLEFT = 3;
+
+// the expander space margin
+static const int EXPANDER_MARGIN = 4;
 
 #ifdef __WXMSW__
-    #include "wx/msw/wrapwin.h"
+static const int EXPANDER_OFFSET = 4;
+#else
+static const int EXPANDER_OFFSET = 1;
 #endif
 
+// Below is the compare stuff.
+// For the generic implementation, both the leaf nodes and the nodes are sorted for
+// fast search when needed
+static wxDataViewModel* g_model;
+static int g_column = -2;
+static bool g_asending = true;
+
 //-----------------------------------------------------------------------------
-// classes
+// wxDataViewColumn
 //-----------------------------------------------------------------------------
 
-class wxDataViewCtrl;
+void wxDataViewColumn::Init(int width, wxAlignment align, int flags)
+{
+    m_width = width;
+    m_minWidth = 0;
+    m_align = align;
+    m_flags = flags;
+    m_sort = false;
+    m_sortAscending = true;
+}
+
+int wxDataViewColumn::GetWidth() const
+{
+    switch ( m_width )
+    {
+        case wxCOL_WIDTH_DEFAULT:
+            return wxDVC_DEFAULT_WIDTH;
+
+        case wxCOL_WIDTH_AUTOSIZE:
+            wxCHECK_MSG( m_owner, wxDVC_DEFAULT_WIDTH, "no owner control" );
+            return m_owner->GetBestColumnWidth(m_owner->GetColumnIndex(this));
+
+        default:
+            return m_width;
+    }
+}
+
+void wxDataViewColumn::UpdateDisplay()
+{
+    if (m_owner)
+    {
+        int idx = m_owner->GetColumnIndex( this );
+        m_owner->OnColumnChange( idx );
+    }
+}
 
 //-----------------------------------------------------------------------------
 // wxDataViewHeaderWindow
 //-----------------------------------------------------------------------------
 
-class wxDataViewHeaderWindow: public wxWindow
+class wxDataViewHeaderWindow : public wxHeaderCtrl
 {
 public:
-    wxDataViewHeaderWindow( wxDataViewCtrl *parent,
-                            wxWindowID id,
-                            const wxPoint &pos = wxDefaultPosition,
-                            const wxSize &size = wxDefaultSize,
-                            const wxString &name = wxT("wxdataviewctrlheaderwindow") );
-    ~wxDataViewHeaderWindow();
+    wxDataViewHeaderWindow(wxDataViewCtrl *parent)
+        : wxHeaderCtrl(parent)
+    {
+    }
 
-    void SetOwner( wxDataViewCtrl* owner ) { m_owner = owner; }
-    wxDataViewCtrl *GetOwner() { return m_owner; }
+    wxDataViewCtrl *GetOwner() const
+        { return static_cast<wxDataViewCtrl *>(GetParent()); }
 
-    void OnPaint( wxPaintEvent &event );
-    void OnMouse( wxMouseEvent &event );
-    void OnSetFocus( wxFocusEvent &event );
+protected:
+    // implement/override wxHeaderCtrl functions by forwarding them to the main
+    // control
+    virtual const wxHeaderColumn& GetColumn(unsigned int idx) const
+    {
+        return *(GetOwner()->GetColumn(idx));
+    }
 
-private:
-    wxDataViewCtrl      *m_owner;
-    wxCursor            *m_resizeCursor;
+    // FIXME: currently unused
+    virtual bool UpdateColumnWidthToFit(unsigned int idx, int widthTitle)
+    {
+        wxDataViewCtrl * const owner = GetOwner();
+
+        int widthContents = owner->GetBestColumnWidth(idx);
+        owner->GetColumn(idx)->SetWidth(wxMax(widthTitle, widthContents));
+        owner->OnColumnChange(idx);
+
+        return true;
+    }
 
 private:
-    DECLARE_DYNAMIC_CLASS(wxDataViewHeaderWindow)
+    bool SendEvent(wxEventType type, unsigned int n)
+    {
+        wxDataViewCtrl * const owner = GetOwner();
+        wxDataViewEvent event(type, owner->GetId());
+
+        event.SetEventObject(owner);
+        event.SetColumn(n);
+        event.SetDataViewColumn(owner->GetColumn(n));
+        event.SetModel(owner->GetModel());
+
+        // for events created by wxDataViewHeaderWindow the
+        // row / value fields are not valid
+        return owner->GetEventHandler()->ProcessEvent(event);
+    }
+
+    void OnClick(wxHeaderCtrlEvent& event)
+    {
+        const unsigned idx = event.GetColumn();
+
+        if ( SendEvent(wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_CLICK, idx) )
+            return;
+
+        // default handling for the column click is to sort by this column or
+        // toggle its sort order
+        wxDataViewCtrl * const owner = GetOwner();
+        wxDataViewColumn * const col = owner->GetColumn(idx);
+        if ( !col->IsSortable() )
+        {
+            // no default handling for non-sortable columns
+            event.Skip();
+            return;
+        }
+
+        if ( col->IsSortKey() )
+        {
+            // already using this column for sorting, just change the order
+            col->ToggleSortOrder();
+        }
+        else // not using this column for sorting yet
+        {
+            // first unset the old sort column if any
+            int oldSortKey = owner->GetSortingColumnIndex();
+            if ( oldSortKey != wxNOT_FOUND )
+            {
+                owner->GetColumn(oldSortKey)->UnsetAsSortKey();
+                owner->OnColumnChange(oldSortKey);
+            }
+
+            owner->SetSortingColumnIndex(idx);
+            col->SetAsSortKey();
+        }
+
+        wxDataViewModel * const model = owner->GetModel();
+        if ( model )
+            model->Resort();
+
+        owner->OnColumnChange(idx);
+    }
+
+    void OnRClick(wxHeaderCtrlEvent& event)
+    {
+        if ( !SendEvent(wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_RIGHT_CLICK,
+                        event.GetColumn()) )
+            event.Skip();
+    }
+
+    void OnResize(wxHeaderCtrlEvent& event)
+    {
+        wxDataViewCtrl * const owner = GetOwner();
+
+        const unsigned col = event.GetColumn();
+        owner->GetColumn(col)->SetWidth(event.GetWidth());
+        GetOwner()->OnColumnChange(col);
+    }
+
+    void OnEndReorder(wxHeaderCtrlEvent& event)
+    {
+        wxDataViewCtrl * const owner = GetOwner();
+        owner->ColumnMoved(owner->GetColumn(event.GetColumn()),
+                        event.GetNewOrder());
+    }
+
     DECLARE_EVENT_TABLE()
+    wxDECLARE_NO_COPY_CLASS(wxDataViewHeaderWindow);
 };
 
+BEGIN_EVENT_TABLE(wxDataViewHeaderWindow, wxHeaderCtrl)
+    EVT_HEADER_CLICK(wxID_ANY, wxDataViewHeaderWindow::OnClick)
+    EVT_HEADER_RIGHT_CLICK(wxID_ANY, wxDataViewHeaderWindow::OnRClick)
+
+    EVT_HEADER_RESIZING(wxID_ANY, wxDataViewHeaderWindow::OnResize)
+    EVT_HEADER_END_RESIZE(wxID_ANY, wxDataViewHeaderWindow::OnResize)
+
+    EVT_HEADER_END_REORDER(wxID_ANY, wxDataViewHeaderWindow::OnEndReorder)
+END_EVENT_TABLE()
+
 //-----------------------------------------------------------------------------
 // wxDataViewRenameTimer
 //-----------------------------------------------------------------------------
@@ -84,49 +269,154 @@ public:
 };
 
 //-----------------------------------------------------------------------------
-// wxDataViewTextCtrlWrapper: wraps a wxTextCtrl for inline editing
+// wxDataViewTreeNode
 //-----------------------------------------------------------------------------
 
-class wxDataViewTextCtrlWrapper : public wxEvtHandler
+class wxDataViewTreeNode;
+WX_DEFINE_ARRAY( wxDataViewTreeNode *, wxDataViewTreeNodes );
+WX_DEFINE_ARRAY( void* , wxDataViewTreeLeaves);
+
+int LINKAGEMODE wxGenericTreeModelNodeCmp( wxDataViewTreeNode ** node1,
+                                           wxDataViewTreeNode ** node2);
+int LINKAGEMODE wxGenericTreeModelItemCmp( void ** id1, void ** id2);
+
+class wxDataViewTreeNode
 {
 public:
-    // NB: text must be a valid object but not Create()d yet
-    wxDataViewTextCtrlWrapper( wxDataViewMainWindow *owner,
-                               wxTextCtrl *text,
-                               wxDataViewListModel *model,
-                               size_t col, size_t row,
-                               wxRect cellLabel );
+    wxDataViewTreeNode( wxDataViewTreeNode * parent = NULL )
+    {
+        m_parent = parent;
+        if (!parent)
+            m_open = true;
+        else
+            m_open = false;
+        m_hasChildren = false;
+        m_subTreeCount  = 0;
+    }
 
-    wxTextCtrl *GetText() const { return m_text; }
+    ~wxDataViewTreeNode()
+    {
+    }
 
-    void AcceptChangesAndFinish();
+    wxDataViewTreeNode * GetParent() const { return m_parent; }
+    void SetParent( wxDataViewTreeNode * parent ) { m_parent = parent; }
+    wxDataViewTreeNodes &  GetNodes() { return m_nodes; }
+    wxDataViewTreeLeaves & GetChildren() { return m_leaves; }
 
-protected:
-    void OnChar( wxKeyEvent &event );
-    void OnKeyUp( wxKeyEvent &event );
-    void OnKillFocus( wxFocusEvent &event );
+    void AddNode( wxDataViewTreeNode * node )
+    {
+        m_leaves.Add( node->GetItem().GetID() );
+        if (g_column >= -1)
+            m_leaves.Sort( &wxGenericTreeModelItemCmp );
+        m_nodes.Add( node );
+        if (g_column >= -1)
+            m_nodes.Sort( &wxGenericTreeModelNodeCmp );
+    }
+    void AddLeaf( void * leaf )
+    {
+        m_leaves.Add( leaf );
+        if (g_column >= -1)
+            m_leaves.Sort( &wxGenericTreeModelItemCmp );
+    }
 
-    bool AcceptChanges();
-    void Finish();
+    wxDataViewItem & GetItem() { return m_item; }
+    const wxDataViewItem & GetItem() const { return m_item; }
+    void SetItem( const wxDataViewItem & item ) { m_item = item; }
 
-private:
-    wxDataViewMainWindow   *m_owner;
-    wxTextCtrl             *m_text;
-    wxString                m_startValue;
-    wxDataViewListModel    *m_model;
-    size_t                  m_col;
-    size_t                  m_row;
-    bool                    m_finished;
-    bool                    m_aboutToFinish;
+    unsigned int GetChildrenNumber() const { return m_leaves.GetCount(); }
+    unsigned int GetNodeNumber() const { return m_nodes.GetCount(); }
+    int GetIndentLevel() const
+    {
+        int ret = 0;
+        const wxDataViewTreeNode * node = this;
+        while( node->GetParent()->GetParent() != NULL )
+        {
+            node = node->GetParent();
+            ret ++;
+        }
+        return ret;
+    }
 
-    DECLARE_EVENT_TABLE()
+    bool IsOpen() const
+    {
+        return m_open;
+    }
+
+    void ToggleOpen()
+    {
+        int len = m_nodes.GetCount();
+        int sum = 0;
+        for ( int i = 0;i < len; i ++)
+            sum += m_nodes[i]->GetSubTreeCount();
+
+        sum += m_leaves.GetCount();
+        if (m_open)
+        {
+            ChangeSubTreeCount(-sum);
+            m_open = !m_open;
+        }
+        else
+        {
+            m_open = !m_open;
+            ChangeSubTreeCount(sum);
+        }
+    }
+    bool HasChildren() const { return m_hasChildren; }
+    void SetHasChildren( bool has ){ m_hasChildren = has; }
+
+    void SetSubTreeCount( int num ) { m_subTreeCount = num; }
+    int GetSubTreeCount() const { return m_subTreeCount; }
+    void ChangeSubTreeCount( int num )
+    {
+        if( !m_open )
+            return;
+        m_subTreeCount += num;
+        if( m_parent )
+            m_parent->ChangeSubTreeCount(num);
+    }
+
+    void Resort()
+    {
+        if (g_column >= -1)
+        {
+            m_nodes.Sort( &wxGenericTreeModelNodeCmp );
+            int len = m_nodes.GetCount();
+            for (int i = 0; i < len; i ++)
+                m_nodes[i]->Resort();
+            m_leaves.Sort( &wxGenericTreeModelItemCmp );
+        }
+    }
+
+private:
+    wxDataViewTreeNode  *m_parent;
+    wxDataViewTreeNodes  m_nodes;
+    wxDataViewTreeLeaves m_leaves;
+    wxDataViewItem       m_item;
+    bool                 m_open;
+    bool                 m_hasChildren;
+    int                  m_subTreeCount;
 };
 
+int LINKAGEMODE wxGenericTreeModelNodeCmp( wxDataViewTreeNode ** node1,
+                                           wxDataViewTreeNode ** node2)
+{
+    return g_model->Compare( (*node1)->GetItem(), (*node2)->GetItem(), g_column, g_asending );
+}
+
+int LINKAGEMODE wxGenericTreeModelItemCmp( void ** id1, void ** id2)
+{
+    return g_model->Compare( *id1, *id2, g_column, g_asending );
+}
+
+
 //-----------------------------------------------------------------------------
 // wxDataViewMainWindow
 //-----------------------------------------------------------------------------
 
-WX_DEFINE_SORTED_ARRAY_SIZE_T( size_t, wxDataViewSelection );
+WX_DEFINE_SORTED_USER_EXPORTED_ARRAY_SIZE_T(unsigned int, wxDataViewSelection,
+                                            WXDLLIMPEXP_ADV);
+WX_DECLARE_LIST(wxDataViewItem, ItemList);
+WX_DEFINE_LIST(ItemList)
 
 class wxDataViewMainWindow: public wxWindow
 {
@@ -136,23 +426,54 @@ public:
                             const wxPoint &pos = wxDefaultPosition,
                             const wxSize &size = wxDefaultSize,
                             const wxString &name = wxT("wxdataviewctrlmainwindow") );
-    ~wxDataViewMainWindow();
-
-    // notifications from wxDataViewListModel
-    bool RowAppended();
-    bool RowPrepended();
-    bool RowInserted( size_t before );
-    bool RowDeleted( size_t row );
-    bool RowChanged( size_t row );
-    bool ValueChanged( size_t col, size_t row );
-    bool RowsReordered( size_t *new_order );
+    virtual ~wxDataViewMainWindow();
+
+    bool IsList() const { return GetOwner()->GetModel()->IsListModel(); }
+    bool IsVirtualList() const { return m_root == NULL; }
+
+    // notifications from wxDataViewModel
+    bool ItemAdded( const wxDataViewItem &parent, const wxDataViewItem &item );
+    bool ItemDeleted( const wxDataViewItem &parent, const wxDataViewItem &item );
+    bool ItemChanged( const wxDataViewItem &item );
+    bool ValueChanged( const wxDataViewItem &item, unsigned int model_column );
     bool Cleared();
+    void Resort()
+    {
+        if (!IsVirtualList())
+        {
+            SortPrepare();
+            m_root->Resort();
+        }
+        UpdateDisplay();
+    }
+
+    void SortPrepare()
+    {
+        g_model = GetOwner()->GetModel();
+        wxDataViewColumn* col = GetOwner()->GetSortingColumn();
+        if( !col )
+        {
+            if (g_model->HasDefaultCompare())
+                g_column = -1;
+            else
+                g_column = -2;
+
+            g_asending = true;
+            return;
+        }
+        g_column = col->GetModelColumn();
+        g_asending = col->IsSortOrderAscending();
+    }
 
     void SetOwner( wxDataViewCtrl* owner ) { m_owner = owner; }
     wxDataViewCtrl *GetOwner() { return m_owner; }
+    const wxDataViewCtrl *GetOwner() const { return m_owner; }
 
+#if wxUSE_DRAG_AND_DROP
+    wxBitmap CreateItemBitmap( unsigned int row, int &indent );
+#endif // wxUSE_DRAG_AND_DROP
     void OnPaint( wxPaintEvent &event );
-    void OnArrowChar(size_t newCurrent, const wxKeyEvent& event);
+    void OnArrowChar(unsigned int newCurrent, const wxKeyEvent& event);
     void OnChar( wxKeyEvent &event );
     void OnMouse( wxMouseEvent &event );
     void OnSetFocus( wxFocusEvent &event );
@@ -163,31 +484,91 @@ public:
     void OnInternalIdle();
 
     void OnRenameTimer();
-    void FinishEditing( wxTextCtrl *text );
 
-    void ScrollWindow( int dx, int dy, const wxRect *rect );
+    void ScrollWindow( int dx, int dy, const wxRect *rect = NULL );
+    void ScrollTo( int rows, int column );
 
-    bool HasCurrentRow() { return m_currentRow != (size_t)-1; }
-    void ChangeCurrentRow( size_t row );
+    unsigned GetCurrentRow() const { return m_currentRow; }
+    bool HasCurrentRow() { return m_currentRow != (unsigned int)-1; }
+    void ChangeCurrentRow( unsigned int row );
 
-    bool IsSingleSel() const { return !GetParent()->HasFlag(wxDV_MULTIPLE); };
+    bool IsSingleSel() const { return !GetParent()->HasFlag(wxDV_MULTIPLE); }
     bool IsEmpty() { return GetRowCount() == 0; }
 
-    int GetCountPerPage();
-    int GetEndOfLastCol();
-    size_t GetFirstVisibleRow();
-    size_t GetLastVisibleRow();
-    size_t GetRowCount();
-
+    int GetCountPerPage() const;
+    int GetEndOfLastCol() const;
+    unsigned int GetFirstVisibleRow() const;
+
+    // I change this method to un const because in the tree view,
+    // the displaying number of the tree are changing along with the
+    // expanding/collapsing of the tree nodes
+    unsigned int GetLastVisibleRow();
+    unsigned int GetRowCount();
+
+    wxDataViewItem GetSelection() const;
+    wxDataViewSelection GetSelections(){ return m_selection; }
+    void SetSelections( const wxDataViewSelection & sel )
+        { m_selection = sel; UpdateDisplay(); }
+    void Select( const wxArrayInt& aSelections );
     void SelectAllRows( bool on );
-    void SelectRow( size_t row, bool on );
-    void SelectRows( size_t from, size_t to, bool on );
-    void ReverseRowSelection( size_t row );
-    bool IsRowSelected( size_t row );
+    void SelectRow( unsigned int row, bool on );
+    void SelectRows( unsigned int from, unsigned int to, bool on );
+    void ReverseRowSelection( unsigned int row );
+    bool IsRowSelected( unsigned int row );
+    void SendSelectionChangedEvent( const wxDataViewItem& item);
+
+    void RefreshRow( unsigned int row );
+    void RefreshRows( unsigned int from, unsigned int to );
+    void RefreshRowsAfter( unsigned int firstRow );
+
+    // returns the colour to be used for drawing the rules
+    wxColour GetRuleColour() const
+    {
+        return wxSystemSettings::GetColour(wxSYS_COLOUR_3DLIGHT);
+    }
+
+    wxRect GetLineRect( unsigned int row ) const;
 
-    void RefreshRow( size_t row );
-    void RefreshRows( size_t from, size_t to );
-    void RefreshRowsAfter( size_t firstRow );
+    int GetLineStart( unsigned int row ) const;  // row * m_lineHeight in fixed mode
+    int GetLineHeight( unsigned int row ) const; // m_lineHeight in fixed mode
+    int GetLineAt( unsigned int y ) const;       // y / m_lineHeight in fixed mode
+
+    // Some useful functions for row and item mapping
+    wxDataViewItem GetItemByRow( unsigned int row ) const;
+    int GetRowByItem( const wxDataViewItem & item ) const;
+
+    // Methods for building the mapping tree
+    void BuildTree( wxDataViewModel  * model );
+    void DestroyTree();
+    void HitTest( const wxPoint & point, wxDataViewItem & item, wxDataViewColumn* &column );
+    wxRect GetItemRect( const wxDataViewItem & item, const wxDataViewColumn* column );
+
+    void Expand( unsigned int row );
+    void Collapse( unsigned int row );
+    bool IsExpanded( unsigned int row ) const;
+    bool HasChildren( unsigned int row ) const;
+
+#if wxUSE_DRAG_AND_DROP
+    bool EnableDragSource( const wxDataFormat &format );
+    bool EnableDropTarget( const wxDataFormat &format );
+
+    void RemoveDropHint();
+    wxDragResult OnDragOver( wxDataFormat format, wxCoord x, wxCoord y, wxDragResult def );
+    bool OnDrop( wxDataFormat format, wxCoord x, wxCoord y );
+    wxDragResult OnData( wxDataFormat format, wxCoord x, wxCoord y, wxDragResult def );
+    void OnLeave();
+#endif // wxUSE_DRAG_AND_DROP
+
+private:
+    wxDataViewTreeNode * GetTreeNodeByRow( unsigned int row ) const;
+    // We did not need this temporarily
+    // wxDataViewTreeNode * GetTreeNodeByItem( const wxDataViewItem & item );
+
+    int RecalculateCount();
+
+    wxDataViewEvent SendExpanderEvent( wxEventType type, const wxDataViewItem & item );
+
+    wxDataViewTreeNode * FindNode( const wxDataViewItem & item );
 
 private:
     wxDataViewCtrl             *m_owner;
@@ -195,22 +576,44 @@ private:
     bool                        m_dirty;
 
     wxDataViewColumn           *m_currentCol;
-    size_t                      m_currentRow;
+    unsigned int                m_currentRow;
     wxDataViewSelection         m_selection;
 
     wxDataViewRenameTimer      *m_renameTimer;
-    wxDataViewTextCtrlWrapper  *m_textctrlWrapper;
     bool                        m_lastOnSame;
 
     bool                        m_hasFocus;
 
+#if wxUSE_DRAG_AND_DROP
     int                         m_dragCount;
     wxPoint                     m_dragStart;
 
+    bool                        m_dragEnabled;
+    wxDataFormat                m_dragFormat;
+
+    bool                        m_dropEnabled;
+    wxDataFormat                m_dropFormat;
+    bool                        m_dropHint;
+    unsigned int                m_dropHintLine;
+#endif // wxUSE_DRAG_AND_DROP
+
     // for double click logic
-    size_t m_lineLastClicked,
-           m_lineBeforeLastClicked,
-           m_lineSelectSingleOnUp;
+    unsigned int m_lineLastClicked,
+        m_lineBeforeLastClicked,
+        m_lineSelectSingleOnUp;
+
+    // the pen used to draw horiz/vertical rules
+    wxPen m_penRule;
+
+    // the pen used to draw the expander and the lines
+    wxPen m_penExpander;
+
+    // This is the tree structure of the model
+    wxDataViewTreeNode * m_root;
+    int m_count;
+
+    // This is the tree node under the cursor
+    wxDataViewTreeNode * m_underMouse;
 
 private:
     DECLARE_DYNAMIC_CLASS(wxDataViewMainWindow)
@@ -218,54 +621,54 @@ private:
 };
 
 // ---------------------------------------------------------
-// wxGenericDataViewListModelNotifier
+// wxGenericDataViewModelNotifier
 // ---------------------------------------------------------
 
-class wxGenericDataViewListModelNotifier: public wxDataViewListModelNotifier
+class wxGenericDataViewModelNotifier: public wxDataViewModelNotifier
 {
 public:
-    wxGenericDataViewListModelNotifier( wxDataViewMainWindow *mainWindow )
+    wxGenericDataViewModelNotifier( wxDataViewMainWindow *mainWindow )
         { m_mainWindow = mainWindow; }
 
-    virtual bool RowAppended()
-        { return m_mainWindow->RowAppended(); }
-    virtual bool RowPrepended()
-        { return m_mainWindow->RowPrepended(); }
-    virtual bool RowInserted( size_t before )
-        { return m_mainWindow->RowInserted( before ); }
-    virtual bool RowDeleted( size_t row )
-        { return m_mainWindow->RowDeleted( row ); }
-    virtual bool RowChanged( size_t row )
-        { return m_mainWindow->RowChanged( row ); }
-    virtual bool ValueChanged( size_t col, size_t row )
-        { return m_mainWindow->ValueChanged( col, row ); }
-    virtual bool RowsReordered( size_t *new_order )
-        { return m_mainWindow->RowsReordered( new_order ); }
+    virtual bool ItemAdded( const wxDataViewItem & parent, const wxDataViewItem & item )
+        { return m_mainWindow->ItemAdded( parent , item ); }
+    virtual bool ItemDeleted( const wxDataViewItem &parent, const wxDataViewItem &item )
+        { return m_mainWindow->ItemDeleted( parent, item ); }
+    virtual bool ItemChanged( const wxDataViewItem & item )
+        { return m_mainWindow->ItemChanged(item);  }
+    virtual bool ValueChanged( const wxDataViewItem & item , unsigned int col )
+        { return m_mainWindow->ValueChanged( item, col ); }
     virtual bool Cleared()
         { return m_mainWindow->Cleared(); }
+    virtual void Resort()
+        { m_mainWindow->Resort(); }
 
     wxDataViewMainWindow    *m_mainWindow;
 };
 
 // ---------------------------------------------------------
-// wxDataViewCell
+// wxDataViewRenderer
 // ---------------------------------------------------------
 
-IMPLEMENT_ABSTRACT_CLASS(wxDataViewCell, wxDataViewCellBase)
+IMPLEMENT_ABSTRACT_CLASS(wxDataViewRenderer, wxDataViewRendererBase)
 
-wxDataViewCell::wxDataViewCell( const wxString &varianttype, wxDataViewCellMode mode ) :
-    wxDataViewCellBase( varianttype, mode )
+wxDataViewRenderer::wxDataViewRenderer( const wxString &varianttype,
+                                        wxDataViewCellMode mode,
+                                        int align) :
+    wxDataViewCustomRendererBase( varianttype, mode, align )
 {
+    m_align = align;
+    m_mode = mode;
+    m_ellipsizeMode = wxELLIPSIZE_MIDDLE;
     m_dc = NULL;
 }
 
-wxDataViewCell::~wxDataViewCell()
+wxDataViewRenderer::~wxDataViewRenderer()
 {
-    if (m_dc)
-        delete m_dc;
+    delete m_dc;
 }
 
-wxDC *wxDataViewCell::GetDC()
+wxDC *wxDataViewRenderer::GetDC()
 {
     if (m_dc == NULL)
     {
@@ -279,136 +682,221 @@ wxDC *wxDataViewCell::GetDC()
     return m_dc;
 }
 
+void wxDataViewRenderer::SetAlignment( int align )
+{
+    m_align=align;
+}
+
+int wxDataViewRenderer::GetAlignment() const
+{
+    return m_align;
+}
+
 // ---------------------------------------------------------
-// wxDataViewCustomCell
+// wxDataViewCustomRenderer
 // ---------------------------------------------------------
 
-IMPLEMENT_ABSTRACT_CLASS(wxDataViewCustomCell, wxDataViewCell)
+IMPLEMENT_ABSTRACT_CLASS(wxDataViewCustomRenderer, wxDataViewRenderer)
 
-wxDataViewCustomCell::wxDataViewCustomCell( const wxString &varianttype,
-                          wxDataViewCellMode mode ) :
-    wxDataViewCell( varianttype, mode )
+wxDataViewCustomRenderer::wxDataViewCustomRenderer( const wxString &varianttype,
+                        wxDataViewCellMode mode, int align ) :
+    wxDataViewRenderer( varianttype, mode, align )
 {
 }
 
 // ---------------------------------------------------------
-// wxDataViewTextCell
+// wxDataViewTextRenderer
 // ---------------------------------------------------------
 
-IMPLEMENT_ABSTRACT_CLASS(wxDataViewTextCell, wxDataViewCustomCell)
+IMPLEMENT_CLASS(wxDataViewTextRenderer, wxDataViewRenderer)
 
-wxDataViewTextCell::wxDataViewTextCell( const wxString &varianttype, wxDataViewCellMode mode ) :
-    wxDataViewCustomCell( varianttype, mode )
+wxDataViewTextRenderer::wxDataViewTextRenderer( const wxString &varianttype,
+                                                wxDataViewCellMode mode, int align ) :
+    wxDataViewRenderer( varianttype, mode, align )
 {
 }
 
-bool wxDataViewTextCell::SetValue( const wxVariant &value )
+bool wxDataViewTextRenderer::SetValue( const wxVariant &value )
 {
     m_text = value.GetString();
 
     return true;
 }
 
-bool wxDataViewTextCell::GetValue( wxVariant& WXUNUSED(value) )
+bool wxDataViewTextRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 {
     return false;
 }
 
-bool wxDataViewTextCell::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
+bool wxDataViewTextRenderer::HasEditorCtrl() const
+{
+    return true;
+}
+
+wxControl* wxDataViewTextRenderer::CreateEditorCtrl( wxWindow *parent,
+        wxRect labelRect, const wxVariant &value )
 {
-    dc->DrawText( m_text, cell.x, cell.y );
+    wxTextCtrl* ctrl = new wxTextCtrl( parent, wxID_ANY, value,
+                                       wxPoint(labelRect.x,labelRect.y),
+                                       wxSize(labelRect.width,labelRect.height) );
+
+    // select the text in the control an place the cursor at the end
+    ctrl->SetInsertionPointEnd();
+    ctrl->SelectAll();
+
+    return ctrl;
+}
 
+bool wxDataViewTextRenderer::GetValueFromEditorCtrl( wxControl *editor, wxVariant &value )
+{
+    wxTextCtrl *text = (wxTextCtrl*) editor;
+    value = text->GetValue();
     return true;
 }
 
-wxSize wxDataViewTextCell::GetSize()
+bool wxDataViewTextRenderer::Render(wxRect rect, wxDC *dc, int state)
 {
-    return wxSize(80,20);
+    RenderText(m_text, 0, rect, dc, state);
+    return true;
+}
+
+wxSize wxDataViewTextRenderer::GetSize() const
+{
+    if (!m_text.empty())
+        return GetTextExtent(m_text);
+    else
+        return wxSize(wxDVC_DEFAULT_RENDERER_SIZE,wxDVC_DEFAULT_RENDERER_SIZE);
 }
 
 // ---------------------------------------------------------
-// wxDataViewToggleCell
+// wxDataViewBitmapRenderer
 // ---------------------------------------------------------
 
-IMPLEMENT_ABSTRACT_CLASS(wxDataViewToggleCell, wxDataViewCustomCell)
+IMPLEMENT_CLASS(wxDataViewBitmapRenderer, wxDataViewRenderer)
 
-wxDataViewToggleCell::wxDataViewToggleCell( const wxString &varianttype,
-                        wxDataViewCellMode mode ) :
-    wxDataViewCustomCell( varianttype, mode )
+wxDataViewBitmapRenderer::wxDataViewBitmapRenderer( const wxString &varianttype,
+                                                    wxDataViewCellMode mode, int align ) :
+    wxDataViewRenderer( varianttype, mode, align )
 {
-    m_toggle = false;
 }
 
-bool wxDataViewToggleCell::SetValue( const wxVariant &value )
+bool wxDataViewBitmapRenderer::SetValue( const wxVariant &value )
 {
-    m_toggle = value.GetBool();
+    if (value.GetType() == wxT("wxBitmap"))
+        m_bitmap << value;
+    if (value.GetType() == wxT("wxIcon"))
+        m_icon << value;
 
     return true;
 }
 
-bool wxDataViewToggleCell::GetValue( wxVariant &WXUNUSED(value) )
+bool wxDataViewBitmapRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 {
     return false;
 }
 
-bool wxDataViewToggleCell::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
+bool wxDataViewBitmapRenderer::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
 {
-    // User wxRenderer here
+    if (m_bitmap.Ok())
+        dc->DrawBitmap( m_bitmap, cell.x, cell.y );
+    else if (m_icon.Ok())
+        dc->DrawIcon( m_icon, cell.x, cell.y );
 
-    wxRect rect;
-    rect.x = cell.x + cell.width/2 - 10;
-    rect.width = 20;
-    rect.y = cell.y + cell.height/2 - 10;
-    rect.height = 20;
+    return true;
+}
+
+wxSize wxDataViewBitmapRenderer::GetSize() const
+{
+    if (m_bitmap.Ok())
+        return wxSize( m_bitmap.GetWidth(), m_bitmap.GetHeight() );
+    else if (m_icon.Ok())
+        return wxSize( m_icon.GetWidth(), m_icon.GetHeight() );
+
+    return wxSize(wxDVC_DEFAULT_RENDERER_SIZE,wxDVC_DEFAULT_RENDERER_SIZE);
+}
+
+// ---------------------------------------------------------
+// wxDataViewToggleRenderer
+// ---------------------------------------------------------
 
+IMPLEMENT_ABSTRACT_CLASS(wxDataViewToggleRenderer, wxDataViewRenderer)
+
+wxDataViewToggleRenderer::wxDataViewToggleRenderer( const wxString &varianttype,
+                        wxDataViewCellMode mode, int align ) :
+    wxDataViewRenderer( varianttype, mode, align )
+{
+    m_toggle = false;
+}
+
+bool wxDataViewToggleRenderer::SetValue( const wxVariant &value )
+{
+    m_toggle = value.GetBool();
+
+    return true;
+}
+
+bool wxDataViewToggleRenderer::GetValue( wxVariant &WXUNUSED(value) ) const
+{
+    return false;
+}
+
+bool wxDataViewToggleRenderer::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
+{
     int flags = 0;
     if (m_toggle)
         flags |= wxCONTROL_CHECKED;
-    if (GetMode() != wxDATAVIEW_CELL_ACTIVATABLE)
+    if (GetMode() != wxDATAVIEW_CELL_ACTIVATABLE ||
+        GetEnabled() == false)
         flags |= wxCONTROL_DISABLED;
 
+    // check boxes we draw must always have the same, standard size (if it's
+    // bigger than the cell size the checkbox will be truncated because the
+    // caller had set the clipping rectangle to prevent us from drawing outside
+    // the cell)
+    cell.SetSize(GetSize());
+
     wxRendererNative::Get().DrawCheckBox(
             GetOwner()->GetOwner(),
             *dc,
-            rect,
+            cell,
             flags );
 
     return true;
 }
 
-bool wxDataViewToggleCell::Activate( wxRect WXUNUSED(cell), wxDataViewListModel *model, size_t col, size_t row )
+void wxDataViewToggleRenderer::WXOnActivate(wxDataViewModel *model,
+                                            const wxVariant& valueOld,
+                                            const wxDataViewItem & item,
+                                            unsigned int col)
 {
-    bool value = !m_toggle;
-    wxVariant variant = value;
-    model->SetValue( variant, col, row );
-    model->ValueChanged( col, row );
-    return true;
+    if (model->IsEnabled(item, col))
+    {
+        model->ChangeValue(!valueOld.GetBool(), item, col);
+    }
 }
 
-wxSize wxDataViewToggleCell::GetSize()
+wxSize wxDataViewToggleRenderer::GetSize() const
 {
-    return wxSize(20,20);
+    // the window parameter is not used by GetCheckBoxSize() so it's
+    // safe to pass NULL
+    return wxRendererNative::Get().GetCheckBoxSize(NULL);
 }
 
 // ---------------------------------------------------------
-// wxDataViewProgressCell
+// wxDataViewProgressRenderer
 // ---------------------------------------------------------
 
-IMPLEMENT_ABSTRACT_CLASS(wxDataViewProgressCell, wxDataViewCustomCell)
+IMPLEMENT_ABSTRACT_CLASS(wxDataViewProgressRenderer, wxDataViewRenderer)
 
-wxDataViewProgressCell::wxDataViewProgressCell( const wxString &label,
-    const wxString &varianttype, wxDataViewCellMode mode ) :
-    wxDataViewCustomCell( varianttype, mode )
+wxDataViewProgressRenderer::wxDataViewProgressRenderer( const wxString &label,
+    const wxString &varianttype, wxDataViewCellMode mode, int align ) :
+    wxDataViewRenderer( varianttype, mode, align )
 {
     m_label = label;
     m_value = 0;
 }
 
-wxDataViewProgressCell::~wxDataViewProgressCell()
-{
-}
-
-bool wxDataViewProgressCell::SetValue( const wxVariant &value )
+bool wxDataViewProgressRenderer::SetValue( const wxVariant &value )
 {
     m_value = (long) value;
 
@@ -418,41 +906,56 @@ bool wxDataViewProgressCell::SetValue( const wxVariant &value )
     return true;
 }
 
-bool wxDataViewProgressCell::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
+bool wxDataViewProgressRenderer::GetValue( wxVariant &value ) const
 {
-    double pct = (double)m_value / 100.0;
-    wxRect bar = cell;
-    bar.width = (int)(cell.width * pct);
-    dc->SetPen( *wxTRANSPARENT_PEN );
-    dc->SetBrush( *wxBLUE_BRUSH );
-    dc->DrawRectangle( bar );
+    value = (long) m_value;
+    return true;
+}
+
+bool
+wxDataViewProgressRenderer::Render(wxRect rect, wxDC *dc, int WXUNUSED(state))
+{
+    // deflate the rect to leave a small border between bars in adjacent rows
+    wxRect bar = rect.Deflate(0, 1);
 
     dc->SetBrush( *wxTRANSPARENT_BRUSH );
     dc->SetPen( *wxBLACK_PEN );
-    dc->DrawRectangle( cell );
+    dc->DrawRectangle( bar );
+
+    bar.width = (int)(bar.width * m_value / 100.);
+    dc->SetPen( *wxTRANSPARENT_PEN );
+
+    const wxDataViewItemAttr& attr = GetAttr();
+    dc->SetBrush( attr.HasColour() ? wxBrush(attr.GetColour())
+                                  : *wxBLUE_BRUSH );
+    dc->DrawRectangle( bar );
 
     return true;
 }
 
-wxSize wxDataViewProgressCell::GetSize()
+wxSize wxDataViewProgressRenderer::GetSize() const
 {
     return wxSize(40,12);
 }
 
 // ---------------------------------------------------------
-// wxDataViewDateCell
+// wxDataViewDateRenderer
 // ---------------------------------------------------------
 
-class wxDataViewDateCellPopupTransient: public wxPopupTransientWindow
+#define wxUSE_DATE_RENDERER_POPUP (wxUSE_CALENDARCTRL && wxUSE_POPUPWIN)
+
+#if wxUSE_DATE_RENDERER_POPUP
+
+class wxDataViewDateRendererPopupTransient: public wxPopupTransientWindow
 {
 public:
-    wxDataViewDateCellPopupTransient( wxWindow* parent, wxDateTime *value,
-        wxDataViewListModel *model, size_t col, size_t row ) :
-        wxPopupTransientWindow( parent, wxBORDER_SIMPLE )
+    wxDataViewDateRendererPopupTransient( wxWindow* parent, wxDateTime *value,
+        wxDataViewModel *model, const wxDataViewItem & item, unsigned int col) :
+        wxPopupTransientWindow( parent, wxBORDER_SIMPLE ),
+        m_item( item )
     {
         m_model = model;
         m_col = col;
-        m_row = row;
         m_cal = new wxCalendarCtrl( this, wxID_ANY, *value );
         wxBoxSizer *sizer = new wxBoxSizer( wxHORIZONTAL );
         sizer->Add( m_cal, 1, wxGROW );
@@ -463,9 +966,9 @@ public:
     void OnCalendar( wxCalendarEvent &event );
 
     wxCalendarCtrl      *m_cal;
-    wxDataViewListModel *m_model;
-    size_t               m_col;
-    size_t               m_row;
+    wxDataViewModel *m_model;
+    unsigned int               m_col;
+    const wxDataViewItem &   m_item;
 
 protected:
     virtual void OnDismiss()
@@ -476,370 +979,314 @@ private:
     DECLARE_EVENT_TABLE()
 };
 
-BEGIN_EVENT_TABLE(wxDataViewDateCellPopupTransient,wxPopupTransientWindow)
-    EVT_CALENDAR( wxID_ANY, wxDataViewDateCellPopupTransient::OnCalendar )
+BEGIN_EVENT_TABLE(wxDataViewDateRendererPopupTransient,wxPopupTransientWindow)
+    EVT_CALENDAR( wxID_ANY, wxDataViewDateRendererPopupTransient::OnCalendar )
 END_EVENT_TABLE()
 
-void wxDataViewDateCellPopupTransient::OnCalendar( wxCalendarEvent &event )
+void wxDataViewDateRendererPopupTransient::OnCalendar( wxCalendarEvent &event )
 {
-    wxDateTime date = event.GetDate();
-    wxVariant value = date;
-    m_model->SetValue( value, m_col, m_row );
-    m_model->ValueChanged( m_col, m_row );
+    m_model->ChangeValue( event.GetDate(), m_item, m_col );
     DismissAndNotify();
 }
 
-IMPLEMENT_ABSTRACT_CLASS(wxDataViewDateCell, wxDataViewCustomCell)
+#endif // wxUSE_DATE_RENDERER_POPUP
+
+IMPLEMENT_ABSTRACT_CLASS(wxDataViewDateRenderer, wxDataViewRenderer)
 
-wxDataViewDateCell::wxDataViewDateCell( const wxString &varianttype,
-                        wxDataViewCellMode mode ) :
-    wxDataViewCustomCell( varianttype, mode )
+wxDataViewDateRenderer::wxDataViewDateRenderer( const wxString &varianttype,
+                        wxDataViewCellMode mode, int align ) :
+    wxDataViewRenderer( varianttype, mode, align )
 {
 }
 
-bool wxDataViewDateCell::SetValue( const wxVariant &value )
+bool wxDataViewDateRenderer::SetValue( const wxVariant &value )
 {
     m_date = value.GetDateTime();
 
     return true;
 }
 
-bool wxDataViewDateCell::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
+bool wxDataViewDateRenderer::GetValue( wxVariant &value ) const
 {
-    dc->SetFont( GetOwner()->GetOwner()->GetFont() );
-    wxString tmp = m_date.FormatDate();
-    dc->DrawText( tmp, cell.x, cell.y );
-
+    value = m_date;
     return true;
 }
 
-wxSize wxDataViewDateCell::GetSize()
+bool wxDataViewDateRenderer::Render( wxRect cell, wxDC *dc, int state )
 {
-    wxDataViewCtrl* view = GetOwner()->GetOwner();
     wxString tmp = m_date.FormatDate();
-    wxCoord x,y,d;
-    view->GetTextExtent( tmp, &x, &y, &d );
-    return wxSize(x,y+d);
+    RenderText( tmp, 0, cell, dc, state );
+    return true;
+}
+
+wxSize wxDataViewDateRenderer::GetSize() const
+{
+    return GetTextExtent(m_date.FormatDate());
 }
 
-bool wxDataViewDateCell::Activate( wxRect WXUNUSED(cell), wxDataViewListModel *model, size_t col, size_t row )
+void wxDataViewDateRenderer::WXOnActivate(wxDataViewModel *model,
+                                          const wxVariant& valueOld,
+                                          const wxDataViewItem & item,
+                                          unsigned int col )
 {
-    wxVariant variant;
-    model->GetValue( variant, col, row );
-    wxDateTime value = variant.GetDateTime();
+    wxDateTime dtOld = valueOld.GetDateTime();
 
-    wxDataViewDateCellPopupTransient *popup = new wxDataViewDateCellPopupTransient(
-        GetOwner()->GetOwner()->GetParent(), &value, model, col, row );
+#if wxUSE_DATE_RENDERER_POPUP
+    wxDataViewDateRendererPopupTransient *popup = new wxDataViewDateRendererPopupTransient(
+        GetOwner()->GetOwner()->GetParent(), &dtOld, model, item, col);
     wxPoint pos = wxGetMousePosition();
     popup->Move( pos );
     popup->Layout();
     popup->Popup( popup->m_cal );
-
-    return true;
+#else // !wxUSE_DATE_RENDERER_POPUP
+    wxMessageBox(dtOld.Format());
+#endif // wxUSE_DATE_RENDERER_POPUP/!wxUSE_DATE_RENDERER_POPUP
 }
 
 // ---------------------------------------------------------
-// wxDataViewColumn
+// wxDataViewIconTextRenderer
 // ---------------------------------------------------------
 
-IMPLEMENT_ABSTRACT_CLASS(wxDataViewColumn, wxDataViewColumnBase)
+IMPLEMENT_CLASS(wxDataViewIconTextRenderer, wxDataViewRenderer)
 
-wxDataViewColumn::wxDataViewColumn( const wxString &title, wxDataViewCell *cell, size_t model_column,
-        int fixed_width, wxDataViewColumnSizing sizing, int flags ) :
-    wxDataViewColumnBase( title, cell, model_column, flags )
+wxDataViewIconTextRenderer::wxDataViewIconTextRenderer(
+const wxString &varianttype, wxDataViewCellMode mode, int align ) :
+    wxDataViewRenderer( varianttype, mode, align )
 {
-    m_sizing = sizing;
-
-    m_width = fixed_width;
-    m_fixedWidth = fixed_width;
+    SetMode(mode);
+    SetAlignment(align);
 }
 
-wxDataViewColumn::~wxDataViewColumn()
+bool wxDataViewIconTextRenderer::SetValue( const wxVariant &value )
 {
+    m_value << value;
+    return true;
 }
 
-void wxDataViewColumn::SetTitle( const wxString &title )
-{
-    wxDataViewColumnBase::SetTitle( title );
-
-}
-
-int wxDataViewColumn::GetWidth()
+bool wxDataViewIconTextRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 {
-    return m_width;
+    return false;
 }
 
-void wxDataViewColumn::SetFixedWidth( int width )
+bool wxDataViewIconTextRenderer::Render(wxRect rect, wxDC *dc, int state)
 {
-    m_fixedWidth = width;
+    int xoffset = 0;
 
-    if (m_sizing == wxDATAVIEW_COL_WIDTH_FIXED)
+    const wxIcon& icon = m_value.GetIcon();
+    if ( icon.IsOk() )
     {
-        m_width = width;
-        // Set dirty
+        dc->DrawIcon(icon, rect.x, rect.y + (rect.height - icon.GetHeight())/2);
+        xoffset = icon.GetWidth()+4;
     }
-}
-
-int wxDataViewColumn::GetFixedWidth()
-{
-    return m_fixedWidth;
-}
-
-//-----------------------------------------------------------------------------
-// wxDataViewHeaderWindow
-//-----------------------------------------------------------------------------
-
-IMPLEMENT_ABSTRACT_CLASS(wxDataViewHeaderWindow, wxWindow)
-
-BEGIN_EVENT_TABLE(wxDataViewHeaderWindow,wxWindow)
-    EVT_PAINT         (wxDataViewHeaderWindow::OnPaint)
-    EVT_MOUSE_EVENTS  (wxDataViewHeaderWindow::OnMouse)
-    EVT_SET_FOCUS     (wxDataViewHeaderWindow::OnSetFocus)
-END_EVENT_TABLE()
-
-wxDataViewHeaderWindow::wxDataViewHeaderWindow( wxDataViewCtrl *parent, wxWindowID id,
-     const wxPoint &pos, const wxSize &size, const wxString &name ) :
-    wxWindow( parent, id, pos, size, 0, name )
-{
-    SetOwner( parent );
 
-    m_resizeCursor = new wxCursor( wxCURSOR_SIZEWE );
+    RenderText(m_value.GetText(), xoffset, rect, dc, state);
 
-    wxVisualAttributes attr = wxPanel::GetClassDefaultAttributes();
-    SetOwnForegroundColour( attr.colFg );
-    SetOwnBackgroundColour( attr.colBg );
-    if (!m_hasFont)
-        SetOwnFont( attr.font );
+    return true;
 }
 
-wxDataViewHeaderWindow::~wxDataViewHeaderWindow()
+wxSize wxDataViewIconTextRenderer::GetSize() const
 {
-    delete m_resizeCursor;
+    if (!m_value.GetText().empty())
+    {
+        wxSize size = GetTextExtent(m_value.GetText());
+
+        if (m_value.GetIcon().IsOk())
+            size.x += m_value.GetIcon().GetWidth() + 4;
+        return size;
+    }
+    return wxSize(80,20);
 }
 
-void wxDataViewHeaderWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
+wxControl* wxDataViewIconTextRenderer::CreateEditorCtrl(wxWindow *parent, wxRect labelRect, const wxVariant& value)
 {
-    int w, h;
-    GetClientSize( &w, &h );
-
-    wxPaintDC dc( this );
-
-    int xpix;
-    m_owner->GetScrollPixelsPerUnit( &xpix, NULL );
-
-    int x;
-    m_owner->GetViewStart( &x, NULL );
+    wxDataViewIconText iconText;
+    iconText << value;
 
-    // account for the horz scrollbar offset
-    dc.SetDeviceOrigin( -x * xpix, 0 );
+    wxString text = iconText.GetText();
 
-    dc.SetFont( GetFont() );
-
-    size_t cols = GetOwner()->GetNumberOfColumns();
-    size_t i;
-    int xpos = 0;
-    for (i = 0; i < cols; i++)
+    // adjust the label rect to take the width of the icon into account
+    if (iconText.GetIcon().IsOk())
     {
-        wxDataViewColumn *col = GetOwner()->GetColumn( i );
-        int width = col->GetWidth();
-
-        int cw = width;
-        int ch = h;
+        int w = iconText.GetIcon().GetWidth() + 4;
+        labelRect.x += w;
+        labelRect.width -= w;
+    }
 
-        wxRendererNative::Get().DrawHeaderButton
-                                (
-                                    this,
-                                    dc,
-                                    wxRect(xpos, 0, cw, ch-1),
-                                    m_parent->IsEnabled() ? 0
-                                                          : (int)wxCONTROL_DISABLED
-                                );
+    wxTextCtrl* ctrl = new wxTextCtrl( parent, wxID_ANY, text,
+                                       wxPoint(labelRect.x,labelRect.y),
+                                       wxSize(labelRect.width,labelRect.height) );
 
-        dc.DrawText( col->GetTitle(), xpos+3, 3 );
+    // select the text in the control an place the cursor at the end
+    ctrl->SetInsertionPointEnd();
+    ctrl->SelectAll();
 
-        xpos += width;
-    }
+    return ctrl;
 }
 
-void wxDataViewHeaderWindow::OnMouse( wxMouseEvent &WXUNUSED(event) )
+bool wxDataViewIconTextRenderer::GetValueFromEditorCtrl( wxControl *editor, wxVariant& value )
 {
-}
+    wxTextCtrl *text = (wxTextCtrl*) editor;
 
-void wxDataViewHeaderWindow::OnSetFocus( wxFocusEvent &event )
-{
-    GetParent()->SetFocus();
-    event.Skip();
+    wxDataViewIconText iconText(text->GetValue(), m_value.GetIcon());
+    value << iconText;
+    return true;
 }
 
 //-----------------------------------------------------------------------------
-// wxDataViewRenameTimer
+// wxDataViewDropTarget
 //-----------------------------------------------------------------------------
 
-wxDataViewRenameTimer::wxDataViewRenameTimer( wxDataViewMainWindow *owner )
-{
-    m_owner = owner;
-}
+#if wxUSE_DRAG_AND_DROP
 
-void wxDataViewRenameTimer::Notify()
+class wxBitmapCanvas: public wxWindow
 {
-    m_owner->OnRenameTimer();
-}
+public:
+    wxBitmapCanvas( wxWindow *parent, const wxBitmap &bitmap, const wxSize &size ) :
+    wxWindow( parent, wxID_ANY, wxPoint(0,0), size )
+    {
+        m_bitmap = bitmap;
+        Connect( wxEVT_PAINT, wxPaintEventHandler(wxBitmapCanvas::OnPaint) );
+    }
 
-//-----------------------------------------------------------------------------
-// wxDataViewTextCtrlWrapper: wraps a wxTextCtrl for inline editing
-//-----------------------------------------------------------------------------
+    void OnPaint( wxPaintEvent &WXUNUSED(event) )
+    {
+        wxPaintDC dc(this);
+        dc.DrawBitmap( m_bitmap, 0, 0);
+    }
 
-BEGIN_EVENT_TABLE(wxDataViewTextCtrlWrapper, wxEvtHandler)
-    EVT_CHAR           (wxDataViewTextCtrlWrapper::OnChar)
-    EVT_KEY_UP         (wxDataViewTextCtrlWrapper::OnKeyUp)
-    EVT_KILL_FOCUS     (wxDataViewTextCtrlWrapper::OnKillFocus)
-END_EVENT_TABLE()
+    wxBitmap m_bitmap;
+};
 
-wxDataViewTextCtrlWrapper::wxDataViewTextCtrlWrapper(
-                        wxDataViewMainWindow *owner,
-                        wxTextCtrl *text,
-                        wxDataViewListModel *model,
-                        size_t col, size_t row,
-                        wxRect rectLabel )
+class wxDataViewDropSource: public wxDropSource
 {
-    m_owner = owner;
-    m_model = model;
-    m_row = row;
-    m_col = col;
-    m_text = text;
-
-    m_finished = false;
-    m_aboutToFinish = false;
-
-    wxVariant value;
-    model->GetValue( value, col, row );
-    m_startValue = value.GetString();
+public:
+    wxDataViewDropSource( wxDataViewMainWindow *win, unsigned int row ) :
+        wxDropSource( win )
+    {
+        m_win = win;
+        m_row = row;
+        m_hint = NULL;
+    }
 
-    m_owner->GetOwner()->CalcScrolledPosition(
-        rectLabel.x, rectLabel.y, &rectLabel.x, &rectLabel.y );
+    ~wxDataViewDropSource()
+    {
+        delete m_hint;
+    }
 
-    m_text->Create( owner, wxID_ANY, m_startValue,
-                    wxPoint(rectLabel.x-2,rectLabel.y-2),
-                    wxSize(rectLabel.width+7,rectLabel.height+4) );
-    m_text->SetFocus();
+    virtual bool GiveFeedback( wxDragResult WXUNUSED(effect) )
+    {
+        wxPoint pos = wxGetMousePosition();
 
-    m_text->PushEventHandler(this);
-}
+        if (!m_hint)
+        {
+            int liney = m_win->GetLineStart( m_row );
+            int linex = 0;
+            m_win->GetOwner()->CalcUnscrolledPosition( 0, liney, NULL, &liney );
+            m_win->ClientToScreen( &linex, &liney );
+            m_dist_x = pos.x - linex;
+            m_dist_y = pos.y - liney;
+
+            int indent = 0;
+            wxBitmap ib = m_win->CreateItemBitmap( m_row, indent );
+            m_dist_x -= indent;
+            m_hint = new wxFrame( m_win->GetParent(), wxID_ANY, wxEmptyString,
+                                        wxPoint(pos.x - m_dist_x, pos.y + 5 ),
+                                        ib.GetSize(),
+                                        wxFRAME_TOOL_WINDOW |
+                                        wxFRAME_FLOAT_ON_PARENT |
+                                        wxFRAME_NO_TASKBAR |
+                                        wxNO_BORDER );
+            new wxBitmapCanvas( m_hint, ib, ib.GetSize() );
+            m_hint->Show();
+        }
+        else
+        {
+            m_hint->Move( pos.x - m_dist_x, pos.y + 5  );
+            m_hint->SetTransparent( 128 );
+        }
 
-void wxDataViewTextCtrlWrapper::AcceptChangesAndFinish()
-{
-    m_aboutToFinish = true;
+        return false;
+    }
 
-    // Notify the owner about the changes
-    AcceptChanges();
+    wxDataViewMainWindow   *m_win;
+    unsigned int            m_row;
+    wxFrame                *m_hint;
+    int m_dist_x,m_dist_y;
+};
 
-    // Even if vetoed, close the control (consistent with MSW)
-    Finish();
-}
 
-void wxDataViewTextCtrlWrapper::OnChar( wxKeyEvent &event )
+class wxDataViewDropTarget: public wxDropTarget
 {
-    switch ( event.m_keyCode )
+public:
+    wxDataViewDropTarget( wxDataObject *obj, wxDataViewMainWindow *win ) :
+        wxDropTarget( obj )
     {
-        case WXK_RETURN:
-            AcceptChangesAndFinish();
-            break;
-
-        case WXK_ESCAPE:
-            // m_owner->OnRenameCancelled( m_itemEdited );
-            Finish();
-            break;
-
-        default:
-            event.Skip();
+        m_win = win;
     }
-}
 
-void wxDataViewTextCtrlWrapper::OnKeyUp( wxKeyEvent &event )
-{
-    if (m_finished)
+    virtual wxDragResult OnDragOver( wxCoord x, wxCoord y, wxDragResult def )
     {
-        event.Skip();
-        return;
+        wxDataFormat format = GetMatchingPair();
+        if (format == wxDF_INVALID)
+            return wxDragNone;
+        return m_win->OnDragOver( format, x, y, def);
     }
 
-    // auto-grow the textctrl
-    wxSize parentSize = m_owner->GetSize();
-    wxPoint myPos = m_text->GetPosition();
-    wxSize mySize = m_text->GetSize();
-    int sx, sy;
-    m_text->GetTextExtent(m_text->GetValue() + _T("MM"), &sx, &sy);
-    if (myPos.x + sx > parentSize.x)
-        sx = parentSize.x - myPos.x;
-    if (mySize.x > sx)
-        sx = mySize.x;
-    m_text->SetSize(sx, wxDefaultCoord);
-
-    event.Skip();
-}
-
-void wxDataViewTextCtrlWrapper::OnKillFocus( wxFocusEvent &event )
-{
-    if ( !m_finished && !m_aboutToFinish )
+    virtual bool OnDrop( wxCoord x, wxCoord y )
     {
-        AcceptChanges();
-        //if ( !AcceptChanges() )
-        //    m_owner->OnRenameCancelled( m_itemEdited );
-
-        Finish();
+        wxDataFormat format = GetMatchingPair();
+        if (format == wxDF_INVALID)
+            return false;
+        return m_win->OnDrop( format, x, y );
     }
 
-    // We must let the native text control handle focus
-    event.Skip();
-}
+    virtual wxDragResult OnData( wxCoord x, wxCoord y, wxDragResult def )
+    {
+        wxDataFormat format = GetMatchingPair();
+        if (format == wxDF_INVALID)
+            return wxDragNone;
+        if (!GetData())
+            return wxDragNone;
+        return m_win->OnData( format, x, y, def );
+    }
 
-bool wxDataViewTextCtrlWrapper::AcceptChanges()
-{
-    const wxString value = m_text->GetValue();
+    virtual void OnLeave()
+        { m_win->OnLeave(); }
 
-    if ( value == m_startValue )
-        // nothing changed, always accept
-        return true;
+    wxDataViewMainWindow   *m_win;
+};
 
-//    if ( !m_owner->OnRenameAccept(m_itemEdited, value) )
-        // vetoed by the user
-//        return false;
+#endif // wxUSE_DRAG_AND_DROP
 
-    // accepted, do rename the item
-    wxVariant variant;
-    variant = value;
-    m_model->SetValue( variant, m_col, m_row );
-    m_model->ValueChanged( m_col, m_row );
+//-----------------------------------------------------------------------------
+// wxDataViewRenameTimer
+//-----------------------------------------------------------------------------
 
-    return true;
+wxDataViewRenameTimer::wxDataViewRenameTimer( wxDataViewMainWindow *owner )
+{
+    m_owner = owner;
 }
 
-void wxDataViewTextCtrlWrapper::Finish()
+void wxDataViewRenameTimer::Notify()
 {
-    if ( !m_finished )
-    {
-        m_finished = true;
-
-        m_text->RemoveEventHandler(this);
-        m_owner->FinishEditing(m_text);
-
-        // delete later
-        wxPendingDelete.Append( this );
-    }
+    m_owner->OnRenameTimer();
 }
 
 //-----------------------------------------------------------------------------
 // wxDataViewMainWindow
 //-----------------------------------------------------------------------------
 
-int LINKAGEMODE wxDataViewSelectionCmp( size_t row1, size_t row2 )
+// The tree building helper, declared firstly
+static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
+                             wxDataViewTreeNode * node);
+
+int LINKAGEMODE wxDataViewSelectionCmp( unsigned int row1, unsigned int row2 )
 {
     if (row1 > row2) return 1;
     if (row1 == row2) return 0;
     return -1;
 }
 
-
 IMPLEMENT_ABSTRACT_CLASS(wxDataViewMainWindow, wxWindow)
 
 BEGIN_EVENT_TABLE(wxDataViewMainWindow,wxWindow)
@@ -852,7 +1299,7 @@ END_EVENT_TABLE()
 
 wxDataViewMainWindow::wxDataViewMainWindow( wxDataViewCtrl *parent, wxWindowID id,
     const wxPoint &pos, const wxSize &size, const wxString &name ) :
-    wxWindow( parent, id, pos, size, wxWANTS_CHARS, name ),
+    wxWindow( parent, id, pos, size, wxWANTS_CHARS|wxBORDER_NONE, name ),
     m_selection( wxDataViewSelectionCmp )
 
 {
@@ -860,297 +1307,967 @@ wxDataViewMainWindow::wxDataViewMainWindow( wxDataViewCtrl *parent, wxWindowID i
 
     m_lastOnSame = false;
     m_renameTimer = new wxDataViewRenameTimer( this );
-    m_textctrlWrapper = NULL;
 
     // TODO: user better initial values/nothing selected
     m_currentCol = NULL;
     m_currentRow = 0;
 
-    // TODO: we need to calculate this smartly
-    m_lineHeight = 20;
+    m_lineHeight = wxMax( 17, GetCharHeight() + 2 ); // 17 = mini icon height + 1
 
+#if wxUSE_DRAG_AND_DROP
     m_dragCount = 0;
     m_dragStart = wxPoint(0,0);
-    m_lineLastClicked = (size_t) -1;
-    m_lineBeforeLastClicked = (size_t) -1;
-    m_lineSelectSingleOnUp = (size_t) -1;
+
+    m_dragEnabled = false;
+    m_dropEnabled = false;
+    m_dropHint = false;
+    m_dropHintLine = (unsigned int) -1;
+#endif // wxUSE_DRAG_AND_DROP
+
+    m_lineLastClicked = (unsigned int) -1;
+    m_lineBeforeLastClicked = (unsigned int) -1;
+    m_lineSelectSingleOnUp = (unsigned int) -1;
 
     m_hasFocus = false;
 
     SetBackgroundColour( *wxWHITE );
 
+    SetBackgroundStyle(wxBG_STYLE_CUSTOM);
+
+    m_penRule = wxPen(GetRuleColour());
+
+    // compose a pen whichcan draw black lines
+    // TODO: maybe there is something system colour to use
+    m_penExpander = wxPen(wxColour(0,0,0));
+
+    m_root = new wxDataViewTreeNode( NULL );
+    m_root->SetHasChildren(true);
+
+    // Make m_count = -1 will cause the class recaculate the real displaying number of rows.
+    m_count = -1;
+    m_underMouse = NULL;
     UpdateDisplay();
 }
 
 wxDataViewMainWindow::~wxDataViewMainWindow()
 {
+    DestroyTree();
     delete m_renameTimer;
 }
 
-void wxDataViewMainWindow::OnRenameTimer()
+
+#if wxUSE_DRAG_AND_DROP
+bool wxDataViewMainWindow::EnableDragSource( const wxDataFormat &format )
 {
-    // We have to call this here because changes may just have
-    // been made and no screen update taken place.
-    if ( m_dirty )
-        wxSafeYield();
+    m_dragFormat = format;
+    m_dragEnabled = format != wxDF_INVALID;
 
+    return true;
+}
 
-    int xpos = 0;
-    size_t cols = GetOwner()->GetNumberOfColumns();
-    size_t i;
-    for (i = 0; i < cols; i++)
-    {
-        wxDataViewColumn *c = GetOwner()->GetColumn( i );
-        if (c == m_currentCol)
-            break;
-        xpos += c->GetWidth();
-    }
-    wxRect labelRect( xpos, m_currentRow * m_lineHeight, m_currentCol->GetWidth(), m_lineHeight );
+bool wxDataViewMainWindow::EnableDropTarget( const wxDataFormat &format )
+{
+    m_dropFormat = format;
+    m_dropEnabled = format != wxDF_INVALID;
 
-    wxClassInfo *textControlClass = CLASSINFO(wxTextCtrl);
+    if (m_dropEnabled)
+        SetDropTarget( new wxDataViewDropTarget( new wxCustomDataObject( format ), this ) );
 
-    wxTextCtrl * const text = (wxTextCtrl *)textControlClass->CreateObject();
-    m_textctrlWrapper = new wxDataViewTextCtrlWrapper(this, text, GetOwner()->GetModel(),
-        m_currentCol->GetModelColumn(), m_currentRow, labelRect );
+    return true;
 }
 
-void wxDataViewMainWindow::FinishEditing( wxTextCtrl *text )
+void wxDataViewMainWindow::RemoveDropHint()
 {
-    delete text;
-    m_textctrlWrapper = NULL;
-    SetFocus();
-  //  SetFocusIgnoringChildren();
+    if (m_dropHint)
+    {
+            m_dropHint = false;
+            RefreshRow( m_dropHintLine );
+            m_dropHintLine = (unsigned int) -1;
+    }
 }
 
-bool wxDataViewMainWindow::RowAppended()
+wxDragResult wxDataViewMainWindow::OnDragOver( wxDataFormat format, wxCoord x,
+                                               wxCoord y, wxDragResult def )
 {
-    return false;
-}
+    int xx = x;
+    int yy = y;
+    m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
+    unsigned int row = GetLineAt( yy );
 
-bool wxDataViewMainWindow::RowPrepended()
-{
-    return false;
-}
+    if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
+    {
+        RemoveDropHint();
+        return wxDragNone;
+    }
 
-bool wxDataViewMainWindow::RowInserted( size_t WXUNUSED(before) )
-{
-    return false;
-}
+    wxDataViewItem item = GetItemByRow( row );
 
-bool wxDataViewMainWindow::RowDeleted( size_t WXUNUSED(row) )
-{
-    return false;
-}
+    wxDataViewModel *model = GetOwner()->GetModel();
 
-bool wxDataViewMainWindow::RowChanged( size_t WXUNUSED(row) )
-{
-    return false;
-}
+    wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, m_owner->GetId() );
+    event.SetEventObject( m_owner );
+    event.SetItem( item );
+    event.SetModel( model );
+    event.SetDataFormat( format );
+    if (!m_owner->HandleWindowEvent( event ))
+    {
+        RemoveDropHint();
+        return wxDragNone;
+    }
 
-bool wxDataViewMainWindow::ValueChanged( size_t WXUNUSED(col), size_t row )
-{
-    wxRect rect( 0, row*m_lineHeight, 10000, m_lineHeight );
-    m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
-    Refresh( true, &rect );
+    if (!event.IsAllowed())
+    {
+        RemoveDropHint();
+        return wxDragNone;
+    }
 
-    return true;
+
+    if (m_dropHint && (row != m_dropHintLine))
+        RefreshRow( m_dropHintLine );
+    m_dropHint = true;
+    m_dropHintLine = row;
+    RefreshRow( row );
+
+    return def;
 }
 
-bool wxDataViewMainWindow::RowsReordered( size_t *WXUNUSED(new_order) )
+bool wxDataViewMainWindow::OnDrop( wxDataFormat format, wxCoord x, wxCoord y )
 {
-    Refresh();
+    RemoveDropHint();
+
+    int xx = x;
+    int yy = y;
+    m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
+    unsigned int row = GetLineAt( yy );
+
+    if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
+        return false;
+
+    wxDataViewItem item = GetItemByRow( row );
+
+    wxDataViewModel *model = GetOwner()->GetModel();
+
+    wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, m_owner->GetId() );
+    event.SetEventObject( m_owner );
+    event.SetItem( item );
+    event.SetModel( model );
+    event.SetDataFormat( format );
+    if (!m_owner->HandleWindowEvent( event ))
+        return false;
+
+    if (!event.IsAllowed())
+        return false;
 
     return true;
 }
 
-bool wxDataViewMainWindow::Cleared()
+wxDragResult wxDataViewMainWindow::OnData( wxDataFormat format, wxCoord x, wxCoord y,
+                                           wxDragResult def )
 {
-    return false;
+    int xx = x;
+    int yy = y;
+    m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
+    unsigned int row = GetLineAt( yy );
+
+    if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
+        return wxDragNone;
+
+    wxDataViewItem item = GetItemByRow( row );
+
+    wxDataViewModel *model = GetOwner()->GetModel();
+
+    wxCustomDataObject *obj = (wxCustomDataObject *) GetDropTarget()->GetDataObject();
+
+    wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP, m_owner->GetId() );
+    event.SetEventObject( m_owner );
+    event.SetItem( item );
+    event.SetModel( model );
+    event.SetDataFormat( format );
+    event.SetDataSize( obj->GetSize() );
+    event.SetDataBuffer( obj->GetData() );
+    if (!m_owner->HandleWindowEvent( event ))
+        return wxDragNone;
+
+    if (!event.IsAllowed())
+        return wxDragNone;
+
+    return def;
 }
 
-void wxDataViewMainWindow::UpdateDisplay()
+void wxDataViewMainWindow::OnLeave()
 {
-    m_dirty = true;
+    RemoveDropHint();
 }
 
-void wxDataViewMainWindow::OnInternalIdle()
+wxBitmap wxDataViewMainWindow::CreateItemBitmap( unsigned int row, int &indent )
 {
-    wxWindow::OnInternalIdle();
-
-    if (m_dirty)
+    int height = GetLineHeight( row );
+    int width = 0;
+    unsigned int cols = GetOwner()->GetColumnCount();
+    unsigned int col;
+    for (col = 0; col < cols; col++)
     {
-        RecalculateDisplay();
-        m_dirty = false;
+        wxDataViewColumn *column = GetOwner()->GetColumnAt(col);
+        if (column->IsHidden())
+            continue;      // skip it!
+        width += column->GetWidth();
     }
-}
 
-void wxDataViewMainWindow::RecalculateDisplay()
-{
-    wxDataViewListModel *model = GetOwner()->GetModel();
-    if (!model)
+    indent = 0;
+    if (!IsList())
     {
-        Refresh();
-        return;
+        wxDataViewTreeNode *node = GetTreeNodeByRow(row);
+        indent = GetOwner()->GetIndent() * node->GetIndentLevel();
+        indent = indent + m_lineHeight;
+            // try to use the m_lineHeight as the expander space
+
+        if(!node->HasChildren())
+            delete node;
     }
+    width -= indent;
 
-    int width = 0;
-    size_t cols = GetOwner()->GetNumberOfColumns();
-    size_t i;
-    for (i = 0; i < cols; i++)
+    wxBitmap bitmap( width, height );
+    wxMemoryDC dc( bitmap );
+    dc.SetFont( GetFont() );
+    dc.SetPen( *wxBLACK_PEN );
+    dc.SetBrush( *wxWHITE_BRUSH );
+    dc.DrawRectangle( 0,0,width,height );
+
+    wxDataViewModel *model = m_owner->GetModel();
+
+    wxDataViewColumn *expander = GetOwner()->GetExpanderColumn();
+    if (!expander)
     {
-        wxDataViewColumn *col = GetOwner()->GetColumn( i );
-        width += col->GetWidth();
+        // TODO-RTL: last column for RTL support
+        expander = GetOwner()->GetColumnAt( 0 );
+        GetOwner()->SetExpanderColumn(expander);
     }
 
-    int height = model->GetNumberOfRows() * m_lineHeight;
 
-    SetVirtualSize( width, height );
-    GetOwner()->SetScrollRate( 10, m_lineHeight );
+    int x = 0;
+    for (col = 0; col < cols; col++)
+    {
+        wxDataViewColumn *column = GetOwner()->GetColumnAt( col );
+        wxDataViewRenderer *cell = column->GetRenderer();
 
-    Refresh();
-}
+        if (column->IsHidden())
+            continue;       // skip it!
 
-void wxDataViewMainWindow::ScrollWindow( int dx, int dy, const wxRect *rect )
-{
-    wxWindow::ScrollWindow( dx, dy, rect );
-    GetOwner()->m_headerArea->ScrollWindow( dx, 0 );
+        width = column->GetWidth();
+
+        if (column == expander)
+            width -= indent;
+
+        wxDataViewItem item = GetItemByRow( row );
+        cell->PrepareForItem(model, item, column->GetModelColumn());
+
+        wxRect item_rect(x, 0, width, height);
+        item_rect.Deflate(PADDING_RIGHTLEFT, 0);
+
+        // dc.SetClippingRegion( item_rect );
+        cell->WXCallRender(item_rect, &dc, 0);
+        // dc.DestroyClippingRegion();
+
+        x += width;
+    }
+
+    return bitmap;
 }
 
+#endif // wxUSE_DRAG_AND_DROP
+
+
 void wxDataViewMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
 {
-    wxPaintDC dc( this );
+    wxDataViewModel *model = GetOwner()->GetModel();
+    wxAutoBufferedPaintDC dc( this );
 
-    GetOwner()->PrepareDC( dc );
+#ifdef __WXMSW__
+    dc.SetBrush(GetOwner()->GetBackgroundColour());
+    dc.SetPen( *wxTRANSPARENT_PEN );
+    dc.DrawRectangle(GetClientSize());
+#endif
 
+    // prepare the DC
+    GetOwner()->PrepareDC( dc );
     dc.SetFont( GetFont() );
 
     wxRect update = GetUpdateRegion().GetBox();
     m_owner->CalcUnscrolledPosition( update.x, update.y, &update.x, &update.y );
 
-    wxDataViewListModel *model = GetOwner()->GetModel();
+    // compute which items needs to be redrawn
+    unsigned int item_start = GetLineAt( wxMax(0,update.y) );
+    unsigned int item_count =
+        wxMin( (int)(  GetLineAt( wxMax(0,update.y+update.height) ) - item_start + 1),
+            (int)(GetRowCount( ) - item_start));
+    unsigned int item_last = item_start + item_count;
+    // Get the parent of DataViewCtrl
+    wxWindow *parent = GetParent()->GetParent();
+    wxDataViewEvent cache_event(wxEVT_COMMAND_DATAVIEW_CACHE_HINT, parent->GetId());
+    cache_event.SetEventObject(GetParent());
+    cache_event.SetCache(item_start, item_last - 1);
+    parent->ProcessWindowEvent(cache_event);
+
+    // compute which columns needs to be redrawn
+    unsigned int cols = GetOwner()->GetColumnCount();
+    if ( !cols )
+    {
+        // we assume that we have at least one column below and painting an
+        // empty control is unnecessary anyhow
+        return;
+    }
+
+    unsigned int col_start = 0;
+    unsigned int x_start;
+    for (x_start = 0; col_start < cols; col_start++)
+    {
+        wxDataViewColumn *col = GetOwner()->GetColumnAt(col_start);
+        if (col->IsHidden())
+            continue;      // skip it!
+
+        unsigned int w = col->GetWidth();
+        if (x_start+w >= (unsigned int)update.x)
+            break;
+
+        x_start += w;
+    }
 
-    size_t item_start = wxMax( 0, (update.y / m_lineHeight) );
-    size_t item_count = wxMin( (int)(((update.y + update.height) / m_lineHeight) - item_start + 1),
-                               (int)(model->GetNumberOfRows()-item_start) );
+    unsigned int col_last = col_start;
+    unsigned int x_last = x_start;
+    for (; col_last < cols; col_last++)
+    {
+        wxDataViewColumn *col = GetOwner()->GetColumnAt(col_last);
+        if (col->IsHidden())
+            continue;      // skip it!
 
+        if (x_last > (unsigned int)update.GetRight())
+            break;
 
+        x_last += col->GetWidth();
+    }
 
-    size_t item;
-    for (item = item_start; item < item_start+item_count; item++)
+    // Draw horizontal rules if required
+    if ( m_owner->HasFlag(wxDV_HORIZ_RULES) )
     {
-        if (m_selection.Index( item ) != wxNOT_FOUND)
+        dc.SetPen(m_penRule);
+        dc.SetBrush(*wxTRANSPARENT_BRUSH);
+
+        for (unsigned int i = item_start; i <= item_last; i++)
         {
-            int flags = wxCONTROL_SELECTED;
-            if (item == m_currentRow)
-                flags |= wxCONTROL_CURRENT;
-            if (m_hasFocus)
-                flags |= wxCONTROL_FOCUSED;
-            wxRect rect( 0, item*m_lineHeight+1, GetEndOfLastCol(), m_lineHeight-2 );
-            wxRendererNative::Get().DrawItemSelectionRect
-                                (
-                                    this,
-                                    dc,
-                                    rect,
-                                    flags
-                                );
+            int y = GetLineStart( i );
+            dc.DrawLine(x_start, y, x_last, y);
         }
-        else
+    }
+
+    // Draw vertical rules if required
+    if ( m_owner->HasFlag(wxDV_VERT_RULES) )
+    {
+        dc.SetPen(m_penRule);
+        dc.SetBrush(*wxTRANSPARENT_BRUSH);
+
+        int x = x_start;
+        for (unsigned int i = col_start; i < col_last; i++)
+        {
+            wxDataViewColumn *col = GetOwner()->GetColumnAt(i);
+            if (col->IsHidden())
+                continue;       // skip it
+
+            dc.DrawLine(x, GetLineStart( item_start ),
+                        x, GetLineStart( item_last ) );
+
+            x += col->GetWidth();
+        }
+
+        // Draw last vertical rule
+        dc.DrawLine(x, GetLineStart( item_start ),
+                    x, GetLineStart( item_last ) );
+    }
+
+    // redraw the background for the items which are selected/current
+    for (unsigned int item = item_start; item < item_last; item++)
+    {
+        bool selected = m_selection.Index( item ) != wxNOT_FOUND;
+        if (selected || item == m_currentRow)
         {
+            int flags = selected ? (int)wxCONTROL_SELECTED : 0;
             if (item == m_currentRow)
-            {
-                int flags = wxCONTROL_CURRENT;
-                if (m_hasFocus)
-                    flags |= wxCONTROL_FOCUSED;  // should have no effect
-                wxRect rect( 0, item*m_lineHeight+1, GetEndOfLastCol(), m_lineHeight-2 );
-                wxRendererNative::Get().DrawItemSelectionRect
+                flags |= wxCONTROL_CURRENT;
+            if (m_hasFocus)
+                flags |= wxCONTROL_FOCUSED;
+
+            wxRect rect( x_start, GetLineStart( item ),
+                         x_last - x_start, GetLineHeight( item ) );
+            wxRendererNative::Get().DrawItemSelectionRect
                                 (
                                     this,
                                     dc,
                                     rect,
                                     flags
                                 );
-
-            }
         }
     }
 
+#if wxUSE_DRAG_AND_DROP
+    if (m_dropHint)
+    {
+        wxRect rect( x_start, GetLineStart( m_dropHintLine ),
+                     x_last - x_start, GetLineHeight( m_dropHintLine ) );
+        dc.SetPen( *wxBLACK_PEN );
+        dc.SetBrush( *wxTRANSPARENT_BRUSH );
+        dc.DrawRectangle( rect );
+    }
+#endif // wxUSE_DRAG_AND_DROP
+
+    wxDataViewColumn *expander = GetOwner()->GetExpanderColumn();
+    if (!expander)
+    {
+        // TODO-RTL: last column for RTL support
+        expander = GetOwner()->GetColumnAt( 0 );
+        GetOwner()->SetExpanderColumn(expander);
+    }
+
+    // redraw all cells for all rows which must be repainted and all columns
     wxRect cell_rect;
-    cell_rect.x = 0;
-    cell_rect.height = m_lineHeight;
-    size_t cols = GetOwner()->GetNumberOfColumns();
-    size_t i;
-    for (i = 0; i < cols; i++)
+    cell_rect.x = x_start;
+    for (unsigned int i = col_start; i < col_last; i++)
     {
-        wxDataViewColumn *col = GetOwner()->GetColumn( i );
-        wxDataViewCell *cell = col->GetCell();
+        wxDataViewColumn *col = GetOwner()->GetColumnAt( i );
+        wxDataViewRenderer *cell = col->GetRenderer();
         cell_rect.width = col->GetWidth();
 
-        for (item = item_start; item < item_start+item_count; item++)
+        if ( col->IsHidden() || cell_rect.width <= 0 )
+            continue;       // skip it!
+
+        for (unsigned int item = item_start; item < item_last; item++)
         {
-            cell_rect.y = item*m_lineHeight;
-            wxVariant value;
-            model->GetValue( value, col->GetModelColumn(), item );
-            cell->SetValue( value );
-            wxSize size = cell->GetSize();
-            // cannot be bigger than allocated space
-            size.x = wxMin( size.x, cell_rect.width );
-            size.y = wxMin( size.y, cell_rect.height );
-            // TODO: check for left/right/centre alignment here
-            wxRect item_rect;
-            // for now: centre
-            item_rect.x = cell_rect.x + (cell_rect.width / 2) - (size.x / 2);
-            item_rect.y = cell_rect.y + (cell_rect.height / 2) - (size.y / 2);
+            // get the cell value and set it into the renderer
+            wxDataViewTreeNode *node = NULL;
+            wxDataViewItem dataitem;
 
-            item_rect.width = size.x;
-            item_rect.height= size.y;
-            cell->Render( item_rect, &dc, 0 );
+            if (!IsVirtualList())
+            {
+                node = GetTreeNodeByRow(item);
+                if( node == NULL )
+                    continue;
+
+                dataitem = node->GetItem();
+
+                if ((i > 0) && model->IsContainer(dataitem) &&
+                    !model->HasContainerColumns(dataitem))
+                    continue;
+            }
+            else
+            {
+                dataitem = wxDataViewItem( wxUIntToPtr(item+1) );
+            }
+
+            cell->PrepareForItem(model, dataitem, col->GetModelColumn());
+
+            // update cell_rect
+            cell_rect.y = GetLineStart( item );
+            cell_rect.height = GetLineHeight( item );
+
+            // deal with the expander
+            int indent = 0;
+            if ((!IsList()) && (col == expander))
+            {
+                // Calculate the indent first
+                indent = GetOwner()->GetIndent() * node->GetIndentLevel();
+
+                // we reserve m_lineHeight of horizontal space for the expander
+                // but leave EXPANDER_MARGIN around the expander itself
+                int exp_x = cell_rect.x + indent + EXPANDER_MARGIN;
+
+                indent += m_lineHeight;
+
+                // draw expander if needed and visible
+                if ( node->HasChildren() && exp_x < cell_rect.GetRight() )
+                {
+                    dc.SetPen( m_penExpander );
+                    dc.SetBrush( wxNullBrush );
+
+                    int exp_size = m_lineHeight - 2*EXPANDER_MARGIN;
+                    int exp_y = cell_rect.y + (cell_rect.height - exp_size)/2
+                                   + EXPANDER_MARGIN - EXPANDER_OFFSET;
+
+                    const wxRect rect(exp_x, exp_y, exp_size, exp_size);
+
+                    int flag = 0;
+                    if ( m_underMouse == node )
+                        flag |= wxCONTROL_CURRENT;
+                    if ( node->IsOpen() )
+                        flag |= wxCONTROL_EXPANDED;
+
+                    // ensure that we don't overflow the cell (which might
+                    // happen if the column is very narrow)
+                    wxDCClipper clip(dc, cell_rect);
+
+                    wxRendererNative::Get().DrawTreeItemButton( this, dc, rect, flag);
+                }
+
+                // force the expander column to left-center align
+                cell->SetAlignment( wxALIGN_CENTER_VERTICAL );
+            }
+            if (node && !node->HasChildren())
+            {
+                // Yes, if the node does not have any child, it must be a leaf which
+                // mean that it is a temporarily created by GetTreeNodeByRow
+                wxDELETE(node);
+            }
+
+            wxRect item_rect = cell_rect;
+            item_rect.Deflate(PADDING_RIGHTLEFT, 0);
+
+            // account for the tree indent (harmless if we're not indented)
+            item_rect.x += indent;
+            item_rect.width -= indent;
+
+            if ( item_rect.width <= 0 )
+                continue;
+
+            int state = 0;
+            if (m_hasFocus && (m_selection.Index(item) != wxNOT_FOUND))
+                state |= wxDATAVIEW_CELL_SELECTED;
+
+            // TODO: it would be much more efficient to create a clipping
+            //       region for the entire column being rendered (in the OnPaint
+            //       of wxDataViewMainWindow) instead of a single clip region for
+            //       each cell. However it would mean that each renderer should
+            //       respect the given wxRect's top & bottom coords, eventually
+            //       violating only the left & right coords - however the user can
+            //       make its own renderer and thus we cannot be sure of that.
+            wxDCClipper clip(dc, item_rect);
+
+            cell->WXCallRender(item_rect, &dc, state);
         }
 
         cell_rect.x += cell_rect.width;
     }
 }
 
-int wxDataViewMainWindow::GetCountPerPage()
+void wxDataViewMainWindow::OnRenameTimer()
+{
+    // We have to call this here because changes may just have
+    // been made and no screen update taken place.
+    if ( m_dirty )
+    {
+        // TODO: use wxTheApp->SafeYieldFor(NULL, wxEVT_CATEGORY_UI) instead
+        //       (needs to be tested!)
+        wxSafeYield();
+    }
+
+    wxDataViewItem item = GetItemByRow( m_currentRow );
+
+    wxRect labelRect = GetItemRect(item, m_currentCol);
+
+    m_currentCol->GetRenderer()->StartEditing( item, labelRect );
+}
+
+//-----------------------------------------------------------------------------
+// Helper class for do operation on the tree node
+//-----------------------------------------------------------------------------
+class DoJob
+{
+public:
+    DoJob() { }
+    virtual ~DoJob() { }
+
+    // The return value control how the tree-walker tranverse the tree
+    // 0: Job done, stop tranverse and return
+    // 1: Ignore the current node's subtree and continue
+    // 2: Job not done, continue
+    enum  { OK = 0 , IGR = 1, CONT = 2 };
+    virtual int operator() ( wxDataViewTreeNode * node ) = 0;
+    virtual int operator() ( void * n ) = 0;
+};
+
+bool Walker( wxDataViewTreeNode * node, DoJob & func )
+{
+    if( node==NULL )
+        return false;
+
+    switch( func( node ) )
+    {
+        case DoJob::OK :
+            return true;
+        case DoJob::IGR:
+            return false;
+        case DoJob::CONT:
+        default:
+            ;
+    }
+
+    const wxDataViewTreeNodes& nodes = node->GetNodes();
+    const wxDataViewTreeLeaves& leaves = node->GetChildren();
+
+    int len_nodes = nodes.GetCount();
+    int len = leaves.GetCount();
+    int i = 0, nodes_i = 0;
+
+    for(; i < len; i ++ )
+    {
+        void * n = leaves[i];
+        if( nodes_i < len_nodes && n == nodes[nodes_i]->GetItem().GetID() )
+        {
+            wxDataViewTreeNode * nd = nodes[nodes_i];
+            nodes_i++;
+
+            if( Walker( nd , func ) )
+                return true;
+
+        }
+        else
+            switch( func( n ) )
+            {
+                case DoJob::OK :
+                    return true;
+                case DoJob::IGR:
+                    continue;
+                case DoJob::CONT:
+                default:
+                ;
+            }
+    }
+    return false;
+}
+
+bool wxDataViewMainWindow::ItemAdded(const wxDataViewItem & parent, const wxDataViewItem & item)
+{
+    GetOwner()->InvalidateColBestWidths();
+
+    if (IsVirtualList())
+    {
+        wxDataViewVirtualListModel *list_model =
+            (wxDataViewVirtualListModel*) GetOwner()->GetModel();
+        m_count = list_model->GetCount();
+        UpdateDisplay();
+        return true;
+    }
+
+    SortPrepare();
+
+    wxDataViewTreeNode * node;
+    node = FindNode(parent);
+
+    if( node == NULL )
+        return false;
+
+    node->SetHasChildren( true );
+
+    if( g_model->IsContainer( item ) )
+    {
+        wxDataViewTreeNode * newnode = new wxDataViewTreeNode( node );
+        newnode->SetItem(item);
+        newnode->SetHasChildren( true );
+        node->AddNode( newnode);
+    }
+    else
+        node->AddLeaf( item.GetID() );
+
+    node->ChangeSubTreeCount(1);
+
+    m_count = -1;
+    UpdateDisplay();
+
+    return true;
+}
+
+static void DestroyTreeHelper( wxDataViewTreeNode * node);
+
+bool wxDataViewMainWindow::ItemDeleted(const wxDataViewItem& parent,
+                                       const wxDataViewItem& item)
+{
+    GetOwner()->InvalidateColBestWidths();
+
+    if (IsVirtualList())
+    {
+        wxDataViewVirtualListModel *list_model =
+            (wxDataViewVirtualListModel*) GetOwner()->GetModel();
+        m_count = list_model->GetCount();
+
+        if( m_currentRow > GetRowCount() )
+            m_currentRow = m_count - 1;
+
+        // TODO: why empty the entire selection?
+        m_selection.Empty();
+
+        UpdateDisplay();
+
+        return true;
+    }
+
+    wxDataViewTreeNode * node = FindNode(parent);
+
+    // Notice that it is possible that the item being deleted is not in the
+    // tree at all, for example we could be deleting a never shown (because
+    // collapsed) item in a tree model. So it's not an error if we don't know
+    // about this item, just return without doing anything then.
+    if ( !node || node->GetChildren().Index(item.GetID()) == wxNOT_FOUND )
+        return false;
+
+    int sub = -1;
+    node->GetChildren().Remove( item.GetID() );
+    // Manipolate selection
+    if( m_selection.GetCount() > 1 )
+    {
+        m_selection.Empty();
+    }
+    bool isContainer = false;
+    wxDataViewTreeNodes nds = node->GetNodes();
+    for (size_t i = 0; i < nds.GetCount(); i ++)
+    {
+        if (nds[i]->GetItem() == item)
+        {
+            isContainer = true;
+            break;
+        }
+    }
+    if( isContainer )
+    {
+        wxDataViewTreeNode * n = NULL;
+        wxDataViewTreeNodes nodes = node->GetNodes();
+        int len = nodes.GetCount();
+        for( int i = 0; i < len; i ++)
+        {
+            if( nodes[i]->GetItem() == item )
+            {
+                n = nodes[i];
+                break;
+            }
+        }
+
+        wxCHECK_MSG( n != NULL, false, "item not found" );
+
+        node->GetNodes().Remove( n );
+        sub -= n->GetSubTreeCount();
+        ::DestroyTreeHelper(n);
+    }
+    // Make the row number invalid and get a new valid one when user call GetRowCount
+    m_count = -1;
+    node->ChangeSubTreeCount(sub);
+
+    // Change the current row to the last row if the current exceed the max row number
+    if( m_currentRow > GetRowCount() )
+        m_currentRow = m_count - 1;
+
+    UpdateDisplay();
+
+    return true;
+}
+
+bool wxDataViewMainWindow::ItemChanged(const wxDataViewItem & item)
+{
+    GetOwner()->InvalidateColBestWidths();
+
+    SortPrepare();
+    g_model->Resort();
+
+    // Send event
+    wxWindow *parent = GetParent();
+    wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
+    le.SetEventObject(parent);
+    le.SetModel(GetOwner()->GetModel());
+    le.SetItem(item);
+    parent->GetEventHandler()->ProcessEvent(le);
+
+    return true;
+}
+
+bool wxDataViewMainWindow::ValueChanged( const wxDataViewItem & item, unsigned int model_column )
+{
+    int view_column = -1;
+    unsigned int n_col = m_owner->GetColumnCount();
+    for (unsigned i = 0; i < n_col; i++)
+    {
+        wxDataViewColumn *column = m_owner->GetColumn( i );
+        if (column->GetModelColumn() == model_column)
+        {
+            view_column = (int) i;
+            break;
+        }
+    }
+    if (view_column == -1)
+        return false;
+
+    GetOwner()->InvalidateColBestWidth(view_column);
+
+    // NOTE: to be valid, we cannot use e.g. INT_MAX - 1
+/*#define MAX_VIRTUAL_WIDTH       100000
+
+    wxRect rect( 0, row*m_lineHeight, MAX_VIRTUAL_WIDTH, m_lineHeight );
+    m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
+    Refresh( true, &rect );
+
+    return true;
+*/
+    SortPrepare();
+    g_model->Resort();
+
+    // Send event
+    wxWindow *parent = GetParent();
+    wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
+    le.SetEventObject(parent);
+    le.SetModel(GetOwner()->GetModel());
+    le.SetItem(item);
+    le.SetColumn(view_column);
+    le.SetDataViewColumn(GetOwner()->GetColumn(view_column));
+    parent->GetEventHandler()->ProcessEvent(le);
+
+    return true;
+}
+
+bool wxDataViewMainWindow::Cleared()
+{
+    GetOwner()->InvalidateColBestWidths();
+
+    DestroyTree();
+    m_selection.Clear();
+
+    SortPrepare();
+    BuildTree( GetOwner()->GetModel() );
+
+    UpdateDisplay();
+
+    return true;
+}
+
+void wxDataViewMainWindow::UpdateDisplay()
+{
+    m_dirty = true;
+    m_underMouse = NULL;
+}
+
+void wxDataViewMainWindow::OnInternalIdle()
+{
+    wxWindow::OnInternalIdle();
+
+    if (m_dirty)
+    {
+        RecalculateDisplay();
+        m_dirty = false;
+    }
+}
+
+void wxDataViewMainWindow::RecalculateDisplay()
+{
+    wxDataViewModel *model = GetOwner()->GetModel();
+    if (!model)
+    {
+        Refresh();
+        return;
+    }
+
+    int width = GetEndOfLastCol();
+    int height = GetLineStart( GetRowCount() );
+
+    SetVirtualSize( width, height );
+    GetOwner()->SetScrollRate( 10, m_lineHeight );
+
+    Refresh();
+}
+
+void wxDataViewMainWindow::ScrollWindow( int dx, int dy, const wxRect *rect )
+{
+    m_underMouse = NULL;
+
+    wxWindow::ScrollWindow( dx, dy, rect );
+
+    if (GetOwner()->m_headerArea)
+        GetOwner()->m_headerArea->ScrollWindow( dx, 0 );
+}
+
+void wxDataViewMainWindow::ScrollTo( int rows, int column )
+{
+    m_underMouse = NULL;
+
+    int x, y;
+    m_owner->GetScrollPixelsPerUnit( &x, &y );
+    int sy = GetLineStart( rows )/y;
+    int sx = 0;
+    if( column != -1 )
+    {
+        wxRect rect = GetClientRect();
+        int colnum = 0;
+        int x_start, w = 0;
+        int xx, yy, xe;
+        m_owner->CalcUnscrolledPosition( rect.x, rect.y, &xx, &yy );
+        for (x_start = 0; colnum < column; colnum++)
+        {
+            wxDataViewColumn *col = GetOwner()->GetColumnAt(colnum);
+            if (col->IsHidden())
+                continue;      // skip it!
+
+            w = col->GetWidth();
+            x_start += w;
+        }
+
+        int x_end = x_start + w;
+        xe = xx + rect.width;
+        if( x_end > xe )
+        {
+            sx = ( xx + x_end - xe )/x;
+        }
+        if( x_start < xx )
+        {
+            sx = x_start/x;
+        }
+    }
+    m_owner->Scroll( sx, sy );
+}
+
+int wxDataViewMainWindow::GetCountPerPage() const
 {
     wxSize size = GetClientSize();
     return size.y / m_lineHeight;
 }
 
-int wxDataViewMainWindow::GetEndOfLastCol()
+int wxDataViewMainWindow::GetEndOfLastCol() const
 {
     int width = 0;
-    size_t i;
-    for (i = 0; i < GetOwner()->GetNumberOfColumns(); i++)
+    unsigned int i;
+    for (i = 0; i < GetOwner()->GetColumnCount(); i++)
     {
-        wxDataViewColumn *c = GetOwner()->GetColumn( i );
-        width += c->GetWidth();
+        const wxDataViewColumn *c =
+            const_cast<wxDataViewCtrl*>(GetOwner())->GetColumnAt( i );
+
+        if (!c->IsHidden())
+            width += c->GetWidth();
     }
     return width;
 }
 
-size_t wxDataViewMainWindow::GetFirstVisibleRow()
+unsigned int wxDataViewMainWindow::GetFirstVisibleRow() const
 {
     int x = 0;
     int y = 0;
     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
 
-    return y / m_lineHeight;
+    return GetLineAt( y );
 }
 
-size_t wxDataViewMainWindow::GetLastVisibleRow()
+unsigned int wxDataViewMainWindow::GetLastVisibleRow()
 {
     wxSize client_size = GetClientSize();
-    m_owner->CalcUnscrolledPosition( client_size.x, client_size.y, &client_size.x, &client_size.y );
+    m_owner->CalcUnscrolledPosition( client_size.x, client_size.y,
+                                    &client_size.x, &client_size.y );
+
+    // we should deal with the pixel here
+    unsigned int row = GetLineAt(client_size.y) - 1;
 
-    return wxMin( GetRowCount()-1, (client_size.y/m_lineHeight)+1 );
+    return wxMin( GetRowCount()-1, row );
 }
 
-size_t wxDataViewMainWindow::GetRowCount()
+unsigned int wxDataViewMainWindow::GetRowCount()
 {
-    return GetOwner()->GetModel()->GetNumberOfRows();
+    if ( m_count == -1 )
+    {
+        m_count = RecalculateCount();
+        UpdateDisplay();
+    }
+    return m_count;
 }
 
-void wxDataViewMainWindow::ChangeCurrentRow( size_t row )
+void wxDataViewMainWindow::ChangeCurrentRow( unsigned int row )
 {
     m_currentRow = row;
 
@@ -1165,18 +2282,18 @@ void wxDataViewMainWindow::SelectAllRows( bool on )
     if (on)
     {
         m_selection.Clear();
-        for (size_t i = 0; i < GetRowCount(); i++)
+        for (unsigned int i = 0; i < GetRowCount(); i++)
             m_selection.Add( i );
         Refresh();
     }
     else
     {
-        size_t first_visible = GetFirstVisibleRow();
-        size_t last_visible = GetLastVisibleRow();
-        size_t i;
+        unsigned int first_visible = GetFirstVisibleRow();
+        unsigned int last_visible = GetLastVisibleRow();
+        unsigned int i;
         for (i = 0; i < m_selection.GetCount(); i++)
         {
-            size_t row = m_selection[i];
+            unsigned int row = m_selection[i];
             if ((row >= first_visible) && (row <= last_visible))
                 RefreshRow( row );
         }
@@ -1184,7 +2301,7 @@ void wxDataViewMainWindow::SelectAllRows( bool on )
     }
 }
 
-void wxDataViewMainWindow::SelectRow( size_t row, bool on )
+void wxDataViewMainWindow::SelectRow( unsigned int row, bool on )
 {
     if (m_selection.Index( row ) == wxNOT_FOUND)
     {
@@ -1204,16 +2321,16 @@ void wxDataViewMainWindow::SelectRow( size_t row, bool on )
     }
 }
 
-void wxDataViewMainWindow::SelectRows( size_t from, size_t to, bool on )
+void wxDataViewMainWindow::SelectRows( unsigned int from, unsigned int to, bool on )
 {
     if (from > to)
     {
-        size_t tmp = from;
+        unsigned int tmp = from;
         from = to;
         to = tmp;
     }
 
-    size_t i;
+    unsigned int i;
     for (i = from; i <= to; i++)
     {
         if (m_selection.Index( i ) == wxNOT_FOUND)
@@ -1230,7 +2347,18 @@ void wxDataViewMainWindow::SelectRows( size_t from, size_t to, bool on )
     RefreshRows( from, to );
 }
 
-void wxDataViewMainWindow::ReverseRowSelection( size_t row )
+void wxDataViewMainWindow::Select( const wxArrayInt& aSelections )
+{
+    for (size_t i=0; i < aSelections.GetCount(); i++)
+    {
+        int n = aSelections[i];
+
+        m_selection.Add( n );
+        RefreshRow( n );
+    }
+}
+
+void wxDataViewMainWindow::ReverseRowSelection( unsigned int row )
 {
     if (m_selection.Index( row ) == wxNOT_FOUND)
         m_selection.Add( row );
@@ -1239,14 +2367,26 @@ void wxDataViewMainWindow::ReverseRowSelection( size_t row )
     RefreshRow( row );
 }
 
-bool wxDataViewMainWindow::IsRowSelected( size_t row )
+bool wxDataViewMainWindow::IsRowSelected( unsigned int row )
 {
     return (m_selection.Index( row ) != wxNOT_FOUND);
 }
 
-void wxDataViewMainWindow::RefreshRow( size_t row )
+void wxDataViewMainWindow::SendSelectionChangedEvent( const wxDataViewItem& item)
 {
-    wxRect rect( 0, row*m_lineHeight, GetEndOfLastCol(), m_lineHeight );
+    wxWindow *parent = GetParent();
+    wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED, parent->GetId());
+
+    le.SetEventObject(parent);
+    le.SetModel(GetOwner()->GetModel());
+    le.SetItem( item );
+
+    parent->GetEventHandler()->ProcessEvent(le);
+}
+
+void wxDataViewMainWindow::RefreshRow( unsigned int row )
+{
+    wxRect rect( 0, GetLineStart( row ), GetEndOfLastCol(), GetLineHeight( row ) );
     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
 
     wxSize client_size = GetClientSize();
@@ -1256,16 +2396,16 @@ void wxDataViewMainWindow::RefreshRow( size_t row )
         Refresh( true, &intersect_rect );
 }
 
-void wxDataViewMainWindow::RefreshRows( size_t from, size_t to )
+void wxDataViewMainWindow::RefreshRows( unsigned int from, unsigned int to )
 {
     if (from > to)
     {
-        size_t tmp = to;
+        unsigned int tmp = to;
         to = from;
         from = tmp;
     }
 
-    wxRect rect( 0, from*m_lineHeight, GetEndOfLastCol(), (to-from+1) * m_lineHeight );
+    wxRect rect( 0, GetLineStart( from ), GetEndOfLastCol(), GetLineStart( (to-from+1) ) );
     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
 
     wxSize client_size = GetClientSize();
@@ -1275,32 +2415,28 @@ void wxDataViewMainWindow::RefreshRows( size_t from, size_t to )
         Refresh( true, &intersect_rect );
 }
 
-void wxDataViewMainWindow::RefreshRowsAfter( size_t firstRow )
+void wxDataViewMainWindow::RefreshRowsAfter( unsigned int firstRow )
 {
-    size_t count = GetRowCount();
-    if (firstRow > count)
-        return;
+    wxSize client_size = GetClientSize();
+    int start = GetLineStart( firstRow );
+    m_owner->CalcScrolledPosition( start, 0, &start, NULL );
+    if (start > client_size.y) return;
 
-    wxRect rect( 0, firstRow*m_lineHeight, GetEndOfLastCol(), count * m_lineHeight );
-    m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
+    wxRect rect( 0, start, client_size.x, client_size.y - start );
 
-    wxSize client_size = GetClientSize();
-    wxRect client_rect( 0, 0, client_size.x, client_size.y );
-    wxRect intersect_rect = client_rect.Intersect( rect );
-    if (intersect_rect.width > 0)
-        Refresh( true, &intersect_rect );
+    Refresh( true, &rect );
 }
 
-void wxDataViewMainWindow::OnArrowChar(size_t newCurrent, const wxKeyEvent& event)
+void wxDataViewMainWindow::OnArrowChar(unsigned int newCurrent, const wxKeyEvent& event)
 {
     wxCHECK_RET( newCurrent < GetRowCount(),
-                 _T("invalid item index in OnArrowChar()") );
+                wxT("invalid item index in OnArrowChar()") );
 
     // if there is no selection, we cannot move it anywhere
     if (!HasCurrentRow())
         return;
 
-    size_t oldCurrent = m_currentRow;
+    unsigned int oldCurrent = m_currentRow;
 
     // in single selection we just ignore Shift as we can't select several
     // items anyhow
@@ -1318,6 +2454,8 @@ void wxDataViewMainWindow::OnArrowChar(size_t newCurrent, const wxKeyEvent& even
         }
 
         SelectRows( oldCurrent, newCurrent, true );
+        if (oldCurrent!=newCurrent)
+            SendSelectionChangedEvent(GetItemByRow(m_selection[0]));
     }
     else // !shift
     {
@@ -1330,442 +2468,2176 @@ void wxDataViewMainWindow::OnArrowChar(size_t newCurrent, const wxKeyEvent& even
         ChangeCurrentRow( newCurrent );
 
         if ( !event.ControlDown() )
+        {
             SelectRow( m_currentRow, true );
+            SendSelectionChangedEvent(GetItemByRow(m_currentRow));
+        }
         else
             RefreshRow( m_currentRow );
     }
 
-    // MoveToFocus();
+    GetOwner()->EnsureVisible( m_currentRow, -1 );
 }
 
-void wxDataViewMainWindow::OnChar( wxKeyEvent &event )
+wxRect wxDataViewMainWindow::GetLineRect( unsigned int row ) const
 {
-    if (event.GetKeyCode() == WXK_TAB)
-    {
-        wxNavigationKeyEvent nevent;
-        nevent.SetWindowChange( event.ControlDown() );
-        nevent.SetDirection( !event.ShiftDown() );
-        nevent.SetEventObject( GetParent()->GetParent() );
-        nevent.SetCurrentFocus( m_parent );
-        if (GetParent()->GetParent()->GetEventHandler()->ProcessEvent( nevent ))
-            return;
-    }
+    wxRect rect;
+    rect.x = 0;
+    rect.y = GetLineStart( row );
+    rect.width = GetEndOfLastCol();
+    rect.height = GetLineHeight( row );
 
-    // no item -> nothing to do
-    if (!HasCurrentRow())
-    {
-        event.Skip();
-        return;
-    }
+    return rect;
+}
 
-    // don't use m_linesPerPage directly as it might not be computed yet
-    const int pageSize = GetCountPerPage();
-    wxCHECK_RET( pageSize, _T("should have non zero page size") );
+int wxDataViewMainWindow::GetLineStart( unsigned int row ) const
+{
+    const wxDataViewModel *model = GetOwner()->GetModel();
 
-    switch ( event.GetKeyCode() )
+    if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
     {
-        case WXK_UP:
-            if ( m_currentRow > 0 )
-                OnArrowChar( m_currentRow - 1, event );
-            break;
+        // TODO make more efficient
 
-        case WXK_DOWN:
-            if ( m_currentRow < GetRowCount() - 1 )
-                OnArrowChar( m_currentRow + 1, event );
-            break;
+        int start = 0;
 
-        case WXK_END:
-            if (!IsEmpty())
-                OnArrowChar( GetRowCount() - 1, event );
-            break;
+        unsigned int r;
+        for (r = 0; r < row; r++)
+        {
+            const wxDataViewTreeNode* node = GetTreeNodeByRow(r);
+            if (!node) return start;
 
-        case WXK_HOME:
-            if (!IsEmpty())
-                OnArrowChar( 0, event );
-            break;
+            wxDataViewItem item = node->GetItem();
 
-        case WXK_PAGEUP:
+            if (node && !node->HasChildren())
             {
-                int steps = pageSize - 1;
-                int index = m_currentRow - steps;
-                if (index < 0)
-                    index = 0;
-
-                OnArrowChar( index, event );
+                // Yes, if the node does not have any child, it must be a leaf which
+                // mean that it is a temporarily created by GetTreeNodeByRow
+                wxDELETE(node);
             }
-            break;
 
-        case WXK_PAGEDOWN:
+            unsigned int cols = GetOwner()->GetColumnCount();
+            unsigned int col;
+            int height = m_lineHeight;
+            for (col = 0; col < cols; col++)
             {
-                int steps = pageSize - 1;
-                size_t index = m_currentRow + steps;
-                size_t count = GetRowCount();
-                if ( index >= count )
-                    index = count - 1;
+                const wxDataViewColumn *column = GetOwner()->GetColumn(col);
+                if (column->IsHidden())
+                    continue;      // skip it!
 
-                OnArrowChar( index, event );
+                if ((col != 0) &&
+                    model->IsContainer(item) &&
+                    !model->HasContainerColumns(item))
+                    continue;      // skip it!
+
+                wxDataViewRenderer *renderer =
+                    const_cast<wxDataViewRenderer*>(column->GetRenderer());
+                renderer->PrepareForItem(model, item, column->GetModelColumn());
+
+                height = wxMax( height, renderer->GetSize().y );
             }
-            break;
 
-        default:
-            event.Skip();
+            start += height;
+        }
+
+        return start;
+    }
+    else
+    {
+        return row * m_lineHeight;
     }
 }
 
-void wxDataViewMainWindow::OnMouse( wxMouseEvent &event )
+int wxDataViewMainWindow::GetLineAt( unsigned int y ) const
 {
-    if (event.GetEventType() == wxEVT_MOUSEWHEEL)
+    const wxDataViewModel *model = GetOwner()->GetModel();
+
+    // check for the easy case first
+    if ( !GetOwner()->HasFlag(wxDV_VARIABLE_LINE_HEIGHT) )
+        return y / m_lineHeight;
+
+    // TODO make more efficient
+    unsigned int row = 0;
+    unsigned int yy = 0;
+    for (;;)
     {
-        // let the base handle mouse wheel events.
-        event.Skip();
-        return;
-    }
+        const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
+        if (!node)
+        {
+            // not really correct...
+            return row + ((y-yy) / m_lineHeight);
+        }
 
-    int x = event.GetX();
-    int y = event.GetY();
-    m_owner->CalcUnscrolledPosition( x, y, &x, &y );
+        wxDataViewItem item = node->GetItem();
 
-    wxDataViewColumn *col = NULL;
+        if (node && !node->HasChildren())
+        {
+            // Yes, if the node does not have any child, it must be a leaf which
+            // mean that it is a temporarily created by GetTreeNodeByRow
+            wxDELETE(node);
+        }
 
-    int xpos = 0;
-    size_t cols = GetOwner()->GetNumberOfColumns();
-    size_t i;
-    for (i = 0; i < cols; i++)
-    {
-        wxDataViewColumn *c = GetOwner()->GetColumn( i );
-        if (x < xpos + c->GetWidth())
+        unsigned int cols = GetOwner()->GetColumnCount();
+        unsigned int col;
+        int height = m_lineHeight;
+        for (col = 0; col < cols; col++)
         {
-            col = c;
-            break;
+            const wxDataViewColumn *column = GetOwner()->GetColumn(col);
+            if (column->IsHidden())
+                continue;      // skip it!
+
+            if ((col != 0) &&
+                model->IsContainer(item) &&
+                !model->HasContainerColumns(item))
+                continue;      // skip it!
+
+            wxDataViewRenderer *renderer =
+                const_cast<wxDataViewRenderer*>(column->GetRenderer());
+            renderer->PrepareForItem(model, item, column->GetModelColumn());
+
+            height = wxMax( height, renderer->GetSize().y );
         }
-        xpos += c->GetWidth();
-    }
-    if (!col)
-        return;
-    wxDataViewCell *cell = col->GetCell();
 
-    size_t current = y / m_lineHeight;
+        yy += height;
+        if (y < yy)
+            return row;
 
-    if ((current > GetRowCount()) || (x > GetEndOfLastCol()))
-    {
-        // Unselect all if below the last row ?
-        return;
+        row++;
     }
+}
 
-    wxDataViewListModel *model = GetOwner()->GetModel();
+int wxDataViewMainWindow::GetLineHeight( unsigned int row ) const
+{
+    const wxDataViewModel *model = GetOwner()->GetModel();
 
-    if (event.Dragging())
+    if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
     {
-        if (m_dragCount == 0)
+        wxASSERT( !IsVirtualList() );
+
+        const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
+        // wxASSERT( node );
+        if (!node) return m_lineHeight;
+
+        wxDataViewItem item = node->GetItem();
+
+        if (node && !node->HasChildren())
         {
-            // we have to report the raw, physical coords as we want to be
-            // able to call HitTest(event.m_pointDrag) from the user code to
-            // get the item being dragged
-            m_dragStart = event.GetPosition();
+                // Yes, if the node does not have any child, it must be a leaf which
+                // mean that it is a temporarily created by GetTreeNodeByRow
+            wxDELETE(node);
         }
 
-        m_dragCount++;
-
-        if (m_dragCount != 3)
-            return;
+        int height = m_lineHeight;
 
-        if (event.LeftIsDown())
+        unsigned int cols = GetOwner()->GetColumnCount();
+        unsigned int col;
+        for (col = 0; col < cols; col++)
         {
-            // Notify cell about drag
+            const wxDataViewColumn *column = GetOwner()->GetColumn(col);
+            if (column->IsHidden())
+                continue;      // skip it!
+
+            if ((col != 0) &&
+                model->IsContainer(item) &&
+                !model->HasContainerColumns(item))
+                continue;      // skip it!
+
+            wxDataViewRenderer *renderer =
+                const_cast<wxDataViewRenderer*>(column->GetRenderer());
+            renderer->PrepareForItem(model, item, column->GetModelColumn());
+
+            height = wxMax( height, renderer->GetSize().y );
         }
-        return;
+
+        return height;
     }
     else
     {
-        m_dragCount = 0;
+        return m_lineHeight;
     }
+}
 
-    bool forceClick = false;
+class RowToItemJob: public DoJob
+{
+public:
+    RowToItemJob( unsigned int row , int current )
+        { this->row = row; this->current = current; }
+    virtual ~RowToItemJob() {}
 
-    if (event.ButtonDClick())
+    virtual int operator() ( wxDataViewTreeNode * node )
     {
-        m_renameTimer->Stop();
-        m_lastOnSame = false;
-    }
+        current ++;
+        if( current == static_cast<int>(row))
+        {
+            ret = node->GetItem();
+            return DoJob::OK;
+        }
 
-    if (event.LeftDClick())
-    {
-        if ( current == m_lineLastClicked )
+        if( node->GetSubTreeCount() + current < static_cast<int>(row) )
         {
-            if (cell->GetMode() == wxDATAVIEW_CELL_ACTIVATABLE)
-            {
-                wxVariant value;
-                model->GetValue( value, col->GetModelColumn(), current );
-                cell->SetValue( value );
-                wxRect cell_rect( xpos, current * m_lineHeight, col->GetWidth(), m_lineHeight );
-                cell->Activate( cell_rect, model, col->GetModelColumn(), current );
-            }
-            return;
+            current += node->GetSubTreeCount();
+            return  DoJob::IGR;
         }
         else
         {
-            // The first click was on another item, so don't interpret this as
-            // a double click, but as a simple click instead
-            forceClick = true;
+            // If the current has no child node, we can find the desired item of the row
+            // number directly.
+            // This if can speed up finding in some case, and will has a very good effect
+            // when it comes to list view
+            if( node->GetNodes().GetCount() == 0)
+            {
+                int index = static_cast<int>(row) - current - 1;
+                ret = node->GetChildren().Item( index );
+                return DoJob::OK;
+            }
+            return DoJob::CONT;
         }
     }
 
-    if (event.LeftUp())
+    virtual int operator() ( void * n )
     {
-        if (m_lineSelectSingleOnUp != (size_t)-1)
+        current ++;
+        if( current == static_cast<int>(row))
         {
-            // select single line
-            SelectAllRows( false );
-            SelectRow( m_lineSelectSingleOnUp, true );
+            ret = wxDataViewItem( n );
+            return DoJob::OK;
         }
+        return DoJob::CONT;
+    }
 
-        if (m_lastOnSame)
-        {
-            if ((col == m_currentCol) && (current == m_currentRow) &&
-                (cell->GetMode() == wxDATAVIEW_CELL_EDITABLE) )
-            {
-                m_renameTimer->Start( 100, true );
-            }
-        }
+    wxDataViewItem GetResult() const
+        { return ret; }
 
-        m_lastOnSame = false;
-        m_lineSelectSingleOnUp = (size_t)-1;
+private:
+    unsigned int row;
+    int current;
+    wxDataViewItem ret;
+};
+
+wxDataViewItem wxDataViewMainWindow::GetItemByRow(unsigned int row) const
+{
+    if (IsVirtualList())
+    {
+        return wxDataViewItem( wxUIntToPtr(row+1) );
     }
     else
     {
-        // This is necessary, because after a DnD operation in
-        // from and to ourself, the up event is swallowed by the
-        // DnD code. So on next non-up event (which means here and
-        // now) m_lineSelectSingleOnUp should be reset.
-        m_lineSelectSingleOnUp = (size_t)-1;
+        RowToItemJob job( row, -2 );
+        Walker( m_root , job );
+        return job.GetResult();
     }
+}
 
-    if (event.RightDown())
+class RowToTreeNodeJob: public DoJob
+{
+public:
+    RowToTreeNodeJob( unsigned int row , int current, wxDataViewTreeNode * node )
     {
-        m_lineBeforeLastClicked = m_lineLastClicked;
-        m_lineLastClicked = current;
+        this->row = row;
+        this->current = current;
+        ret = NULL;
+        parent = node;
+    }
+    virtual ~RowToTreeNodeJob(){ }
 
-        // If the item is already selected, do not update the selection.
-        // Multi-selections should not be cleared if a selected item is clicked.
-        if (!IsRowSelected(current))
+    virtual int operator() ( wxDataViewTreeNode * node )
+    {
+        current ++;
+        if( current == static_cast<int>(row))
         {
-            SelectAllRows(false);
-            ChangeCurrentRow(current);
-            SelectRow(m_currentRow,true);
+            ret = node;
+            return DoJob::OK;
         }
 
-        // notify cell about right click
-        // cell->...
-
-        // Allow generation of context menu event
-        event.Skip();
-    }
-    else if (event.MiddleDown())
-    {
-        // notify cell about middle click
-        // cell->...
-    }
-    if (event.LeftDown() || forceClick)
-    {
-#ifdef __WXMSW__
-        SetFocus();
-#endif
-
-        m_lineBeforeLastClicked = m_lineLastClicked;
-        m_lineLastClicked = current;
-
-        size_t oldCurrentRow = m_currentRow;
-        bool oldWasSelected = IsRowSelected(m_currentRow);
-
-        bool cmdModifierDown = event.CmdDown();
-        if ( IsSingleSel() || !(cmdModifierDown || event.ShiftDown()) )
+        if( node->GetSubTreeCount() + current < static_cast<int>(row) )
         {
-            if ( IsSingleSel() || !IsRowSelected(current) )
-            {
-                SelectAllRows( false );
-
-                ChangeCurrentRow(current);
-
-                SelectRow(m_currentRow,true);
-            }
-            else // multi sel & current is highlighted & no mod keys
-            {
-                m_lineSelectSingleOnUp = current;
-                ChangeCurrentRow(current); // change focus
-            }
+            current += node->GetSubTreeCount();
+            return  DoJob::IGR;
         }
-        else // multi sel & either ctrl or shift is down
+        else
         {
-            if (cmdModifierDown)
-            {
-                ChangeCurrentRow(current);
-
-                ReverseRowSelection(m_currentRow);
-            }
-            else if (event.ShiftDown())
-            {
-                ChangeCurrentRow(current);
-
-                size_t lineFrom = oldCurrentRow,
-                       lineTo = current;
-
-                if ( lineTo < lineFrom )
-                {
-                    lineTo = lineFrom;
-                    lineFrom = m_currentRow;
-                }
+            parent = node;
 
-                SelectRows(lineFrom, lineTo, true);
-            }
-            else // !ctrl, !shift
+            // If the current node has no children, we can find the desired item of the
+            // row number directly.
+            // This if can speed up finding in some case, and will have a very good
+            // effect for list views.
+            if( node->GetNodes().GetCount() == 0)
             {
-                // test in the enclosing if should make it impossible
-                wxFAIL_MSG( _T("how did we get here?") );
+                int index = static_cast<int>(row) - current - 1;
+                void * n = node->GetChildren().Item( index );
+                ret = new wxDataViewTreeNode( parent );
+                ret->SetItem( wxDataViewItem( n ));
+                ret->SetHasChildren(false);
+                return DoJob::OK;
             }
+            return DoJob::CONT;
         }
+    }
 
-        if (m_currentRow != oldCurrentRow)
-            RefreshRow( oldCurrentRow );
+    virtual int operator() ( void * n )
+    {
+        current ++;
+        if( current == static_cast<int>(row))
+        {
+            ret = new wxDataViewTreeNode( parent );
+            ret->SetItem( wxDataViewItem( n ));
+            ret->SetHasChildren(false);
+            return DoJob::OK;
+        }
 
-        wxDataViewColumn *oldCurrentCol = m_currentCol;
+        return DoJob::CONT;
+    }
 
-        // Update selection here...
-        m_currentCol = col;
+    wxDataViewTreeNode * GetResult() const
+        { return ret; }
 
-        m_lastOnSame = !forceClick && ((col == oldCurrentCol) && (current == oldCurrentRow)) && oldWasSelected;
-    }
+private:
+    unsigned int row;
+    int current;
+    wxDataViewTreeNode * ret;
+    wxDataViewTreeNode * parent;
+};
+
+wxDataViewTreeNode * wxDataViewMainWindow::GetTreeNodeByRow(unsigned int row) const
+{
+    wxASSERT( !IsVirtualList() );
+
+    RowToTreeNodeJob job( row , -2, m_root );
+    Walker( m_root , job );
+    return job.GetResult();
 }
 
-void wxDataViewMainWindow::OnSetFocus( wxFocusEvent &event )
+wxDataViewEvent wxDataViewMainWindow::SendExpanderEvent( wxEventType type,
+                                                         const wxDataViewItem & item )
 {
-    m_hasFocus = true;
+    wxWindow *parent = GetParent();
+    wxDataViewEvent le(type, parent->GetId());
 
-    if (HasCurrentRow())
-        Refresh();
+    le.SetEventObject(parent);
+    le.SetModel(GetOwner()->GetModel());
+    le.SetItem( item );
 
-    event.Skip();
+    parent->GetEventHandler()->ProcessEvent(le);
+    return le;
 }
 
-void wxDataViewMainWindow::OnKillFocus( wxFocusEvent &event )
+bool wxDataViewMainWindow::IsExpanded( unsigned int row ) const
 {
-    m_hasFocus = false;
+    if (IsList())
+        return false;
+
+    wxDataViewTreeNode * node = GetTreeNodeByRow(row);
+    if (!node)
+        return false;
+
+    if (!node->HasChildren())
+    {
+        delete node;
+        return false;
+    }
+
+    return node->IsOpen();
+}
+
+bool wxDataViewMainWindow::HasChildren( unsigned int row ) const
+{
+    if (IsList())
+        return false;
+
+    wxDataViewTreeNode * node = GetTreeNodeByRow(row);
+    if (!node)
+        return false;
+
+    if (!node->HasChildren())
+    {
+        delete node;
+        return false;
+    }
+
+    return true;
+}
+
+void wxDataViewMainWindow::Expand( unsigned int row )
+{
+    if (IsList())
+        return;
+
+    wxDataViewTreeNode * node = GetTreeNodeByRow(row);
+    if (!node)
+        return;
+
+    if (!node->HasChildren())
+    {
+        delete node;
+        return;
+    }
+
+            if (!node->IsOpen())
+            {
+                wxDataViewEvent e =
+                    SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, node->GetItem());
+
+                // Check if the user prevent expanding
+                if( e.GetSkipped() )
+                    return;
+
+                node->ToggleOpen();
+
+                // build the children of current node
+                if( node->GetChildrenNumber() == 0 )
+                {
+                    SortPrepare();
+                    ::BuildTreeHelper(GetOwner()->GetModel(), node->GetItem(), node);
+                }
+
+                // By expanding the node all row indices that are currently in the selection list
+                // and are greater than our node have become invalid. So we have to correct that now.
+                const unsigned rowAdjustment = node->GetSubTreeCount();
+                for(unsigned i=0; i<m_selection.size(); ++i)
+                {
+                    const unsigned testRow = m_selection[i];
+                    // all rows above us are not affected, so skip them
+                    if(testRow <= row)
+                        continue;
+
+                    m_selection[i] += rowAdjustment;
+                }
+
+                if(m_currentRow > row)
+                    ChangeCurrentRow(m_currentRow + rowAdjustment);
+
+                m_count = -1;
+                UpdateDisplay();
+                // Send the expanded event
+                SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED,node->GetItem());
+            }
+}
+
+void wxDataViewMainWindow::Collapse(unsigned int row)
+{
+    if (IsList())
+        return;
+
+    wxDataViewTreeNode *node = GetTreeNodeByRow(row);
+    if (!node)
+        return;
+
+    if (!node->HasChildren())
+    {
+        delete node;
+        return;
+    }
+
+        if (node->IsOpen())
+        {
+            wxDataViewEvent e =
+                SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING,node->GetItem());
+            if( e.GetSkipped() )
+                return;
+
+            // Find out if there are selected items below the current node.
+            bool selectCollapsingRow = false;
+            const unsigned rowAdjustment = node->GetSubTreeCount();
+            unsigned maxRowToBeTested = row + rowAdjustment;
+            for(unsigned i=0; i<m_selection.size(); ++i)
+            {
+                const unsigned testRow = m_selection[i];
+                if(testRow > row && testRow <= maxRowToBeTested)
+                {
+                    selectCollapsingRow = true;
+                    // get out as soon as we have found a node that is selected
+                    break;
+                }
+            }
+
+            node->ToggleOpen();
+
+            // If the node to be closed has selected items the user won't see those any longer.
+            // We select the collapsing node in this case.
+            if(selectCollapsingRow)
+            {
+                SelectAllRows(false);
+                ChangeCurrentRow(row);
+                SelectRow(row, true);
+                SendSelectionChangedEvent(GetItemByRow(row));
+            }
+            else
+            {
+                // if there were no selected items below our node we still need to "fix" the
+                // selection list to adjust for the changing of the row indices.
+                // We actually do the opposite of what we are doing in Expand().
+                for(unsigned i=0; i<m_selection.size(); ++i)
+                {
+                    const unsigned testRow = m_selection[i];
+                    // all rows above us are not affected, so skip them
+                    if(testRow <= row)
+                        continue;
+
+                    m_selection[i] -= rowAdjustment;
+                }
+
+                // if the "current row" is being collapsed away we change it to the current row ;-)
+                if(m_currentRow > row && m_currentRow <= maxRowToBeTested)
+                    ChangeCurrentRow(row);
+                else if(m_currentRow > row)
+                    ChangeCurrentRow(m_currentRow - rowAdjustment);
+            }
+
+            m_count = -1;
+            UpdateDisplay();
+            SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED,node->GetItem());
+        }
+}
+
+wxDataViewTreeNode * wxDataViewMainWindow::FindNode( const wxDataViewItem & item )
+{
+    const wxDataViewModel * model = GetOwner()->GetModel();
+    if( model == NULL )
+        return NULL;
+
+    if (!item.IsOk())
+        return m_root;
+
+    // Compose the parent-chain for the item we are looking for
+    wxVector<wxDataViewItem> parentChain;
+    wxDataViewItem it( item );
+    while( it.IsOk() )
+    {
+        parentChain.push_back(it);
+        it = model->GetParent(it);
+    }
+
+    // Find the item along the parent-chain.
+    // This algorithm is designed to speed up the node-finding method
+    wxDataViewTreeNode* node = m_root;
+    for( unsigned iter = parentChain.size()-1; iter>=0; --iter )
+    {
+        if( node->HasChildren() )
+        {
+            if( node->GetChildrenNumber() == 0 )
+            {
+                SortPrepare();
+                ::BuildTreeHelper(model, node->GetItem(), node);
+            }
+
+            const wxDataViewTreeNodes& nodes = node->GetNodes();
+            bool found = false;
+
+            for (unsigned i = 0; i < nodes.GetCount(); ++i)
+            {
+                wxDataViewTreeNode* currentNode = nodes[i];
+                if (currentNode->GetItem() == parentChain[iter])
+                {
+                    if (currentNode->GetItem() == item)
+                        return currentNode;
+
+                    node = currentNode;
+                    found = true;
+                    break;
+                }
+            }
+            if (!found)
+                return NULL;
+        }
+        else
+            return NULL;
+    }
+    return NULL;
+}
+
+void wxDataViewMainWindow::HitTest( const wxPoint & point, wxDataViewItem & item,
+                                    wxDataViewColumn* &column )
+{
+    wxDataViewColumn *col = NULL;
+    unsigned int cols = GetOwner()->GetColumnCount();
+    unsigned int colnum = 0;
+    int x, y;
+    m_owner->CalcUnscrolledPosition( point.x, point.y, &x, &y );
+    for (unsigned x_start = 0; colnum < cols; colnum++)
+    {
+        col = GetOwner()->GetColumnAt(colnum);
+        if (col->IsHidden())
+            continue;      // skip it!
+
+        unsigned int w = col->GetWidth();
+        if (x_start+w >= (unsigned int)x)
+            break;
+
+        x_start += w;
+    }
+
+    column = col;
+    item = GetItemByRow( GetLineAt( y ) );
+}
+
+wxRect wxDataViewMainWindow::GetItemRect( const wxDataViewItem & item,
+                                          const wxDataViewColumn* column )
+{
+    int xpos = 0;
+    int width = 0;
+
+    unsigned int cols = GetOwner()->GetColumnCount();
+    // If column is null the loop will compute the combined width of all columns.
+    // Otherwise, it will compute the x position of the column we are looking for.
+    for (unsigned int i = 0; i < cols; i++)
+    {
+        wxDataViewColumn* col = GetOwner()->GetColumnAt( i );
+
+        if (col == column)
+            break;
+
+        if (col->IsHidden())
+            continue;      // skip it!
+
+        xpos += col->GetWidth();
+        width += col->GetWidth();
+    }
+
+    if(column != 0)
+    {
+        // If we have a column, we need can get its width directly.
+        if(column->IsHidden())
+            width = 0;
+        else
+            width = column->GetWidth();
+
+    }
+    else
+    {
+        // If we have no column, we reset the x position back to zero.
+        xpos = 0;
+    }
+
+    // we have to take an expander column into account and compute its indentation
+    // to get the correct x position where the actual text is
+    int indent = 0;
+    int row = GetRowByItem(item);
+    if (!IsList() && (column == 0 || GetOwner()->GetExpanderColumn() == column) )
+    {
+        wxDataViewTreeNode* node = GetTreeNodeByRow(row);
+        indent = GetOwner()->GetIndent() * node->GetIndentLevel();
+        indent = indent + m_lineHeight; // use m_lineHeight as the width of the expander
+
+        if(!node->HasChildren())
+            delete node;
+    }
+
+    wxRect itemRect( xpos + indent,
+                     GetLineStart( row ),
+                     width - indent,
+                     GetLineHeight( row ) );
+
+    GetOwner()->CalcScrolledPosition(  itemRect.x,  itemRect.y,
+                                      &itemRect.x, &itemRect.y );
+
+    return itemRect;
+}
+
+int wxDataViewMainWindow::RecalculateCount()
+{
+    if (IsVirtualList())
+    {
+        wxDataViewVirtualListModel *list_model =
+            (wxDataViewVirtualListModel*) GetOwner()->GetModel();
+
+        return list_model->GetCount();
+    }
+    else
+    {
+        return m_root->GetSubTreeCount();
+    }
+}
+
+class ItemToRowJob : public DoJob
+{
+public:
+    ItemToRowJob(const wxDataViewItem& item_, wxVector<wxDataViewItem>::reverse_iterator iter)
+        : m_iter(iter),
+        item(item_)
+    {
+        ret = -1;
+    }
+
+    // Maybe binary search will help to speed up this process
+    virtual int operator() ( wxDataViewTreeNode * node)
+    {
+        ret ++;
+        if( node->GetItem() == item )
+        {
+            return DoJob::OK;
+        }
+
+        if( node->GetItem() == *m_iter )
+        {
+            m_iter++;
+            return DoJob::CONT;
+        }
+        else
+        {
+            ret += node->GetSubTreeCount();
+            return DoJob::IGR;
+        }
+
+    }
+
+    virtual int operator() ( void * n )
+    {
+        ret ++;
+        if( n == item.GetID() )
+            return DoJob::OK;
+        return DoJob::CONT;
+    }
+
+    // the row number is begin from zero
+    int GetResult() const
+        { return ret -1; }
+
+private:
+    wxVector<wxDataViewItem>::reverse_iterator m_iter;
+    wxDataViewItem item;
+    int ret;
+
+};
+
+int wxDataViewMainWindow::GetRowByItem(const wxDataViewItem & item) const
+{
+    const wxDataViewModel * model = GetOwner()->GetModel();
+    if( model == NULL )
+        return -1;
+
+    if (IsVirtualList())
+    {
+        return wxPtrToUInt( item.GetID() ) -1;
+    }
+    else
+    {
+        if( !item.IsOk() )
+            return -1;
+
+        // Compose the parent-chain of the item we are looking for
+        wxVector<wxDataViewItem> parentChain;
+        wxDataViewItem it( item );
+        while( it.IsOk() )
+        {
+            parentChain.push_back(it);
+            it = model->GetParent(it);
+        }
+
+        // add an 'invalid' item to represent our 'invisible' root node
+        parentChain.push_back(wxDataViewItem());
+
+        // the parent chain was created by adding the deepest parent first.
+        // so if we want to start at the root node, we have to iterate backwards through the vector
+        ItemToRowJob job( item, parentChain.rbegin() );
+        Walker( m_root, job );
+        return job.GetResult();
+    }
+}
+
+static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
+                             wxDataViewTreeNode * node)
+{
+    if( !model->IsContainer( item ) )
+        return;
+
+    wxDataViewItemArray children;
+    unsigned int num = model->GetChildren( item, children);
+
+    unsigned int index = 0;
+    while( index < num )
+    {
+        if( model->IsContainer( children[index] ) )
+        {
+            wxDataViewTreeNode * n = new wxDataViewTreeNode( node );
+            n->SetItem(children[index]);
+            n->SetHasChildren( true );
+            node->AddNode( n );
+        }
+        else
+        {
+            node->AddLeaf( children[index].GetID() );
+        }
+        index ++;
+    }
+    node->SetSubTreeCount( num );
+    wxDataViewTreeNode * n = node->GetParent();
+    if( n != NULL)
+        n->ChangeSubTreeCount(num);
+
+}
+
+void wxDataViewMainWindow::BuildTree(wxDataViewModel * model)
+{
+    DestroyTree();
+
+    if (GetOwner()->GetModel()->IsVirtualListModel())
+    {
+        m_count = -1;
+        return;
+    }
+
+    m_root = new wxDataViewTreeNode( NULL );
+    m_root->SetHasChildren(true);
+
+    // First we define a invalid item to fetch the top-level elements
+    wxDataViewItem item;
+    SortPrepare();
+    BuildTreeHelper( model, item, m_root);
+    m_count = -1;
+}
+
+static void DestroyTreeHelper( wxDataViewTreeNode * node )
+{
+    if( node->GetNodeNumber() != 0 )
+    {
+        int len = node->GetNodeNumber();
+        wxDataViewTreeNodes& nodes = node->GetNodes();
+        for (int i = 0; i < len; i++)
+            DestroyTreeHelper(nodes[i]);
+    }
+    delete node;
+}
+
+void wxDataViewMainWindow::DestroyTree()
+{
+    if (!IsVirtualList())
+    {
+        ::DestroyTreeHelper(m_root);
+            m_count = 0;
+            m_root = NULL;
+    }
+}
+
+void wxDataViewMainWindow::OnChar( wxKeyEvent &event )
+{
+    wxWindow * const parent = GetParent();
+
+    // propagate the char event upwards
+    wxKeyEvent eventForParent(event);
+    eventForParent.SetEventObject(parent);
+    if ( parent->ProcessWindowEvent(eventForParent) )
+        return;
+
+    if ( parent->HandleAsNavigationKey(event) )
+        return;
+
+    // no item -> nothing to do
+    if (!HasCurrentRow())
+    {
+        event.Skip();
+        return;
+    }
+
+    // don't use m_linesPerPage directly as it might not be computed yet
+    const int pageSize = GetCountPerPage();
+    wxCHECK_RET( pageSize, wxT("should have non zero page size") );
+
+    switch ( event.GetKeyCode() )
+    {
+        case WXK_RETURN:
+            {
+                wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED,
+                                   parent->GetId());
+                le.SetItem( GetItemByRow(m_currentRow) );
+                le.SetEventObject(parent);
+                le.SetModel(GetOwner()->GetModel());
+
+                parent->GetEventHandler()->ProcessEvent(le);
+            }
+            break;
+
+        case WXK_UP:
+            if ( m_currentRow > 0 )
+                OnArrowChar( m_currentRow - 1, event );
+            break;
+
+        case WXK_DOWN:
+            if ( m_currentRow < GetRowCount() - 1 )
+                OnArrowChar( m_currentRow + 1, event );
+            break;
+        // Add the process for tree expanding/collapsing
+        case WXK_LEFT:
+        {
+            if (IsList())
+               break;
+
+            wxDataViewTreeNode* node = GetTreeNodeByRow(m_currentRow);
+            if (!node)
+                break;
+
+            if (node->HasChildren() && node->IsOpen())
+            {
+                Collapse(m_currentRow);
+            }
+            else    // if the node is already closed we move the selection to its parent
+            {
+                wxDataViewTreeNode *parent_node = node->GetParent();
+
+                if(!node->HasChildren())
+                    delete node;
+
+                if (parent_node)
+                {
+                    int parent = GetRowByItem( parent_node->GetItem() );
+                    if ( parent >= 0 )
+                    {
+                        unsigned int row = m_currentRow;
+                        SelectRow( row, false);
+                        SelectRow( parent, true );
+                        ChangeCurrentRow( parent );
+                        GetOwner()->EnsureVisible( parent, -1 );
+                        SendSelectionChangedEvent( parent_node->GetItem() );
+                    }
+                }
+            }
+            break;
+        }
+        case WXK_RIGHT:
+        {
+            if (!IsExpanded( m_currentRow ))
+                Expand( m_currentRow );
+            else
+            {
+                unsigned int row = m_currentRow;
+                SelectRow( row, false );
+                SelectRow( row + 1, true );
+                ChangeCurrentRow( row + 1 );
+                GetOwner()->EnsureVisible( row + 1, -1 );
+                SendSelectionChangedEvent( GetItemByRow(row+1) );
+            }
+            break;
+        }
+        case WXK_END:
+        {
+            if (!IsEmpty())
+                OnArrowChar( GetRowCount() - 1, event );
+            break;
+        }
+        case WXK_HOME:
+            if (!IsEmpty())
+                OnArrowChar( 0, event );
+            break;
+
+        case WXK_PAGEUP:
+            {
+                int steps = pageSize - 1;
+                int index = m_currentRow - steps;
+                if (index < 0)
+                    index = 0;
+
+                OnArrowChar( index, event );
+            }
+            break;
+
+        case WXK_PAGEDOWN:
+            {
+                int steps = pageSize - 1;
+                unsigned int index = m_currentRow + steps;
+                unsigned int count = GetRowCount();
+                if ( index >= count )
+                    index = count - 1;
+
+                OnArrowChar( index, event );
+            }
+            break;
+
+        case WXK_F2:
+            {
+                if(m_selection.size() == 1)
+                {
+                    // TODO: we need to revise that when we have a concept for a 'current column'
+                    GetOwner()->StartEditor(GetItemByRow(m_selection[0]), 0);
+                }
+            }
+            break;
+
+        default:
+            event.Skip();
+    }
+}
+
+void wxDataViewMainWindow::OnMouse( wxMouseEvent &event )
+{
+    if (event.GetEventType() == wxEVT_MOUSEWHEEL)
+    {
+        // let the base handle mouse wheel events.
+        event.Skip();
+        return;
+    }
+
+    // set the focus to ourself if any of the mouse buttons are pressed
+    if(event.ButtonDown() && !HasFocus())
+        SetFocus();
+
+    int x = event.GetX();
+    int y = event.GetY();
+    m_owner->CalcUnscrolledPosition( x, y, &x, &y );
+    wxDataViewColumn *col = NULL;
+
+    int xpos = 0;
+    unsigned int cols = GetOwner()->GetColumnCount();
+    unsigned int i;
+    for (i = 0; i < cols; i++)
+    {
+        wxDataViewColumn *c = GetOwner()->GetColumnAt( i );
+        if (c->IsHidden())
+            continue;      // skip it!
+
+        if (x < xpos + c->GetWidth())
+        {
+            col = c;
+            break;
+        }
+        xpos += c->GetWidth();
+    }
+    if (!col)
+    {
+        event.Skip();
+        return;
+    }
+
+    wxDataViewRenderer *cell = col->GetRenderer();
+    unsigned int current = GetLineAt( y );
+    if ((current >= GetRowCount()) || (x > GetEndOfLastCol()))
+    {
+        // Unselect all if below the last row ?
+        event.Skip();
+        return;
+    }
+
+    // Test whether the mouse is hovered on the tree item button
+    bool hoverOverExpander = false;
+    if ((!IsList()) && (GetOwner()->GetExpanderColumn() == col))
+    {
+        wxDataViewTreeNode * node = GetTreeNodeByRow(current);
+        if( node!=NULL && node->HasChildren() )
+        {
+            int indent = node->GetIndentLevel();
+            indent = GetOwner()->GetIndent()*indent;
+
+            // we make the rectangle we are looking in a bit bigger than the actual
+            // visual expander so the user can hit that little thing reliably
+            wxRect rect( xpos + indent,
+                        GetLineStart( current ) + (GetLineHeight(current) - m_lineHeight)/2,
+                        m_lineHeight, m_lineHeight);
+            if( rect.Contains(x, y) )
+            {
+                // So the mouse is over the expander
+                hoverOverExpander = true;
+                if (m_underMouse && m_underMouse != node)
+                {
+                    // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
+                    RefreshRow(GetRowByItem(m_underMouse->GetItem()));
+                }
+                if (m_underMouse != node)
+                {
+                    // wxLogMessage("Do the row: %d", current);
+                    RefreshRow(current);
+                }
+                m_underMouse = node;
+            }
+        }
+        if (node!=NULL && !node->HasChildren())
+            delete node;
+    }
+    if (!hoverOverExpander)
+    {
+        if (m_underMouse != NULL)
+        {
+            // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
+            RefreshRow(GetRowByItem(m_underMouse->GetItem()));
+            m_underMouse = NULL;
+        }
+    }
+
+    wxDataViewModel *model = GetOwner()->GetModel();
+
+#if wxUSE_DRAG_AND_DROP
+    if (event.Dragging())
+    {
+        if (m_dragCount == 0)
+        {
+            // we have to report the raw, physical coords as we want to be
+            // able to call HitTest(event.m_pointDrag) from the user code to
+            // get the item being dragged
+            m_dragStart = event.GetPosition();
+        }
+
+        m_dragCount++;
+
+        if (m_dragCount != 3)
+            return;
+
+        if (event.LeftIsDown())
+        {
+            m_owner->CalcUnscrolledPosition( m_dragStart.x, m_dragStart.y,
+                                             &m_dragStart.x, &m_dragStart.y );
+            unsigned int drag_item_row = GetLineAt( m_dragStart.y );
+            wxDataViewItem item = GetItemByRow( drag_item_row );
+
+            // Notify cell about drag
+            wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_BEGIN_DRAG, m_owner->GetId() );
+            event.SetEventObject( m_owner );
+            event.SetItem( item );
+            event.SetModel( model );
+            if (!m_owner->HandleWindowEvent( event ))
+                return;
+
+            if (!event.IsAllowed())
+                return;
+
+            wxDataObject *obj = event.GetDataObject();
+            if (!obj)
+                return;
+
+            wxDataViewDropSource drag( this, drag_item_row );
+            drag.SetData( *obj );
+            /* wxDragResult res = */ drag.DoDragDrop();
+            delete obj;
+        }
+        return;
+    }
+    else
+    {
+        m_dragCount = 0;
+    }
+#endif // wxUSE_DRAG_AND_DROP
+
+    bool simulateClick = false;
+
+    if (event.ButtonDClick())
+    {
+        m_renameTimer->Stop();
+        m_lastOnSame = false;
+    }
+
+    wxDataViewItem item = GetItemByRow(current);
+    bool ignore_other_columns =
+        ((GetOwner()->GetExpanderColumn() != col) &&
+        (model->IsContainer(item)) &&
+        (!model->HasContainerColumns(item)));
+
+    if (event.LeftDClick())
+    {
+        if(hoverOverExpander)
+        {
+            // a double click on the expander will be converted into a "simulated" normal click
+            simulateClick = true;
+        }
+        else if ( current == m_lineLastClicked )
+        {
+            if ((!ignore_other_columns) && (cell->GetMode() == wxDATAVIEW_CELL_ACTIVATABLE))
+            {
+                const unsigned colIdx = col->GetModelColumn();
+
+                wxVariant value;
+                model->GetValue( value, item, colIdx );
+
+                cell->WXOnActivate(model, value, item, colIdx);
+
+                if ( wxDataViewCustomRenderer *custom = cell->WXGetAsCustom() )
+                {
+                    cell->SetValue( value );
+
+                    wxRect cell_rect( xpos, GetLineStart( current ),
+                                    col->GetWidth(), GetLineHeight( current ) );
+                    custom->Activate( cell_rect, model, item, colIdx );
+                }
+            }
+            else
+            {
+                wxWindow *parent = GetParent();
+                wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED, parent->GetId());
+                le.SetItem( item );
+                le.SetColumn( col->GetModelColumn() );
+                le.SetDataViewColumn( col );
+                le.SetEventObject(parent);
+                le.SetModel(GetOwner()->GetModel());
+
+                parent->GetEventHandler()->ProcessEvent(le);
+            }
+            return;
+        }
+        else
+        {
+            // The first click was on another item, so don't interpret this as
+            // a double click, but as a simple click instead
+            simulateClick = true;
+        }
+    }
+
+    if (event.LeftUp() && !hoverOverExpander)
+    {
+        if (m_lineSelectSingleOnUp != (unsigned int)-1)
+        {
+            // select single line
+            SelectAllRows( false );
+            SelectRow( m_lineSelectSingleOnUp, true );
+            SendSelectionChangedEvent( GetItemByRow(m_lineSelectSingleOnUp) );
+        }
+
+        // If the user click the expander, we do not do editing even if the column
+        // with expander are editable
+        if (m_lastOnSame && !ignore_other_columns)
+        {
+            if ((col == m_currentCol) && (current == m_currentRow) &&
+                (cell->GetMode() & wxDATAVIEW_CELL_EDITABLE) )
+            {
+                m_renameTimer->Start( 100, true );
+            }
+        }
+
+        m_lastOnSame = false;
+        m_lineSelectSingleOnUp = (unsigned int)-1;
+    }
+    else if(!event.LeftUp())
+    {
+        // This is necessary, because after a DnD operation in
+        // from and to ourself, the up event is swallowed by the
+        // DnD code. So on next non-up event (which means here and
+        // now) m_lineSelectSingleOnUp should be reset.
+        m_lineSelectSingleOnUp = (unsigned int)-1;
+    }
+
+    if (event.RightDown())
+    {
+        m_lineBeforeLastClicked = m_lineLastClicked;
+        m_lineLastClicked = current;
+
+        // If the item is already selected, do not update the selection.
+        // Multi-selections should not be cleared if a selected item is clicked.
+        if (!IsRowSelected(current))
+        {
+            SelectAllRows(false);
+            ChangeCurrentRow(current);
+            SelectRow(m_currentRow,true);
+            SendSelectionChangedEvent(GetItemByRow( m_currentRow ) );
+        }
+    }
+    else if (event.RightUp())
+    {
+        wxVariant value;
+        model->GetValue( value, item, col->GetModelColumn() );
+        wxWindow *parent = GetParent();
+        wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_CONTEXT_MENU, parent->GetId());
+        le.SetItem( item );
+        le.SetColumn( col->GetModelColumn() );
+        le.SetDataViewColumn( col );
+        le.SetEventObject(parent);
+        le.SetModel(GetOwner()->GetModel());
+        le.SetValue(value);
+        parent->GetEventHandler()->ProcessEvent(le);
+    }
+    else if (event.MiddleDown())
+    {
+    }
+
+    if((event.LeftDown() || simulateClick) && hoverOverExpander)
+    {
+        wxDataViewTreeNode* node = GetTreeNodeByRow(current);
+
+        // hoverOverExpander being true tells us that our node must be
+        // valid and have children.
+        // So we don't need any extra checks.
+        if( node->IsOpen() )
+            Collapse(current);
+        else
+            Expand(current);
+    }
+    else if ((event.LeftDown() || simulateClick) && !hoverOverExpander)
+    {
+        m_lineBeforeLastClicked = m_lineLastClicked;
+        m_lineLastClicked = current;
+
+        unsigned int oldCurrentRow = m_currentRow;
+        bool oldWasSelected = IsRowSelected(m_currentRow);
+
+        bool cmdModifierDown = event.CmdDown();
+        if ( IsSingleSel() || !(cmdModifierDown || event.ShiftDown()) )
+        {
+            if ( IsSingleSel() || !IsRowSelected(current) )
+            {
+                SelectAllRows( false );
+                ChangeCurrentRow(current);
+                SelectRow(m_currentRow,true);
+                SendSelectionChangedEvent(GetItemByRow( m_currentRow ) );
+            }
+            else // multi sel & current is highlighted & no mod keys
+            {
+                m_lineSelectSingleOnUp = current;
+                ChangeCurrentRow(current); // change focus
+            }
+        }
+        else // multi sel & either ctrl or shift is down
+        {
+            if (cmdModifierDown)
+            {
+                ChangeCurrentRow(current);
+                ReverseRowSelection(m_currentRow);
+                SendSelectionChangedEvent(GetItemByRow(m_currentRow));
+            }
+            else if (event.ShiftDown())
+            {
+                ChangeCurrentRow(current);
+
+                unsigned int lineFrom = oldCurrentRow,
+                    lineTo = current;
+
+                if ( lineTo < lineFrom )
+                {
+                    lineTo = lineFrom;
+                    lineFrom = m_currentRow;
+                }
+
+                SelectRows(lineFrom, lineTo, true);
+                SendSelectionChangedEvent(GetItemByRow(m_selection[0]) );
+            }
+            else // !ctrl, !shift
+            {
+                // test in the enclosing if should make it impossible
+                wxFAIL_MSG( wxT("how did we get here?") );
+            }
+        }
+
+        if (m_currentRow != oldCurrentRow)
+            RefreshRow( oldCurrentRow );
+
+        wxDataViewColumn *oldCurrentCol = m_currentCol;
+
+        // Update selection here...
+        m_currentCol = col;
+
+        m_lastOnSame = !simulateClick && ((col == oldCurrentCol) &&
+                        (current == oldCurrentRow)) && oldWasSelected;
+
+        // Call LeftClick after everything else as under GTK+
+        if (cell->GetMode() & wxDATAVIEW_CELL_ACTIVATABLE)
+        {
+            if ( wxDataViewCustomRenderer *custom = cell->WXGetAsCustom() )
+            {
+                // notify cell about click
+                custom->PrepareForItem(model, item, col->GetModelColumn());
+
+                wxRect cell_rect( xpos, GetLineStart( current ),
+                                  col->GetWidth(), GetLineHeight( current ) );
+
+                // Report position relative to the cell's custom area, i.e.
+                // no the entire space as given by the control but the one
+                // used by the renderer after calculation of alignment etc.
+
+                // adjust the rectangle ourselves to account for the alignment
+                wxRect rectItem = cell_rect;
+                const int align = custom->GetAlignment();
+                if ( align != wxDVR_DEFAULT_ALIGNMENT )
+                {
+                    const wxSize size = custom->GetSize();
+
+                    if ( size.x >= 0 && size.x < cell_rect.width )
+                    {
+                        if ( align & wxALIGN_CENTER_HORIZONTAL )
+                            rectItem.x += (cell_rect.width - size.x)/2;
+                        else if ( align & wxALIGN_RIGHT )
+                            rectItem.x += cell_rect.width - size.x;
+                        // else: wxALIGN_LEFT is the default
+                    }
+
+                    if ( size.y >= 0 && size.y < cell_rect.height )
+                    {
+                        if ( align & wxALIGN_CENTER_VERTICAL )
+                            rectItem.y += (cell_rect.height - size.y)/2;
+                        else if ( align & wxALIGN_BOTTOM )
+                            rectItem.y += cell_rect.height - size.y;
+                        // else: wxALIGN_TOP is the default
+                    }
+                }
+
+                wxPoint pos( event.GetPosition() );
+                pos.x -= rectItem.x;
+                pos.y -= rectItem.y;
+
+                m_owner->CalcUnscrolledPosition( pos.x, pos.y, &pos.x, &pos.y );
+
+                 /* ignore ret */ custom->LeftClick( pos, cell_rect,
+                                  model, item, col->GetModelColumn());
+            }
+        }
+    }
+}
+
+void wxDataViewMainWindow::OnSetFocus( wxFocusEvent &event )
+{
+    m_hasFocus = true;
+
+    if (HasCurrentRow())
+        Refresh();
+
+    event.Skip();
+}
+
+void wxDataViewMainWindow::OnKillFocus( wxFocusEvent &event )
+{
+    m_hasFocus = false;
+
+    if (HasCurrentRow())
+        Refresh();
+
+    event.Skip();
+}
+
+wxDataViewItem wxDataViewMainWindow::GetSelection() const
+{
+    if( m_selection.GetCount() != 1 )
+        return wxDataViewItem();
+
+    return GetItemByRow( m_selection.Item(0));
+}
+
+//-----------------------------------------------------------------------------
+// wxDataViewCtrl
+//-----------------------------------------------------------------------------
+
+WX_DEFINE_LIST(wxDataViewColumnList)
+
+IMPLEMENT_DYNAMIC_CLASS(wxDataViewCtrl, wxDataViewCtrlBase)
+BEGIN_EVENT_TABLE(wxDataViewCtrl, wxDataViewCtrlBase)
+    EVT_SIZE(wxDataViewCtrl::OnSize)
+END_EVENT_TABLE()
+
+wxDataViewCtrl::~wxDataViewCtrl()
+{
+    if (m_notifier)
+        GetModel()->RemoveNotifier( m_notifier );
+
+    m_cols.Clear();
+    m_colsBestWidths.clear();
+}
+
+void wxDataViewCtrl::Init()
+{
+    m_cols.DeleteContents(true);
+    m_notifier = NULL;
+
+    // No sorting column at start
+    m_sortingColumnIdx = wxNOT_FOUND;
+
+    m_headerArea = NULL;
+}
+
+bool wxDataViewCtrl::Create(wxWindow *parent,
+                            wxWindowID id,
+                            const wxPoint& pos,
+                            const wxSize& size,
+                            long style,
+                            const wxValidator& validator,
+                            const wxString& name)
+{
+//    if ( (style & wxBORDER_MASK) == 0)
+//        style |= wxBORDER_SUNKEN;
+
+    Init();
+
+    if (!wxControl::Create( parent, id, pos, size,
+                            style | wxScrolledWindowStyle, validator, name))
+        return false;
+
+    SetInitialSize(size);
+
+#ifdef __WXMAC__
+    MacSetClipChildren( true );
+#endif
+
+    m_clientArea = new wxDataViewMainWindow( this, wxID_ANY );
+
+    // We use the cursor keys for moving the selection, not scrolling, so call
+    // this method to ensure wxScrollHelperEvtHandler doesn't catch all
+    // keyboard events forwarded to us from wxListMainWindow.
+    DisableKeyboardScrolling();
+
+    if (HasFlag(wxDV_NO_HEADER))
+        m_headerArea = NULL;
+    else
+        m_headerArea = new wxDataViewHeaderWindow(this);
+
+    SetTargetWindow( m_clientArea );
+
+    wxBoxSizer *sizer = new wxBoxSizer( wxVERTICAL );
+    if (m_headerArea)
+        sizer->Add( m_headerArea, 0, wxGROW );
+    sizer->Add( m_clientArea, 1, wxGROW );
+    SetSizer( sizer );
+
+    return true;
+}
+
+wxBorder wxDataViewCtrl::GetDefaultBorder() const
+{
+    return wxBORDER_THEME;
+}
+
+#ifdef __WXMSW__
+WXLRESULT wxDataViewCtrl::MSWWindowProc(WXUINT nMsg,
+                                        WXWPARAM wParam,
+                                        WXLPARAM lParam)
+{
+    WXLRESULT rc = wxDataViewCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
+
+#ifndef __WXWINCE__
+    // we need to process arrows ourselves for scrolling
+    if ( nMsg == WM_GETDLGCODE )
+    {
+        rc |= DLGC_WANTARROWS;
+    }
+#endif
+
+    return rc;
+}
+#endif
+
+wxSize wxDataViewCtrl::GetSizeAvailableForScrollTarget(const wxSize& size)
+{
+    wxSize newsize = size;
+    if (!HasFlag(wxDV_NO_HEADER) && (m_headerArea))
+    newsize.y -= m_headerArea->GetSize().y;
+
+    return newsize;
+}
+
+void wxDataViewCtrl::OnSize( wxSizeEvent &WXUNUSED(event) )
+{
+    // We need to override OnSize so that our scrolled
+    // window a) does call Layout() to use sizers for
+    // positioning the controls but b) does not query
+    // the sizer for their size and use that for setting
+    // the scrollable area as set that ourselves by
+    // calling SetScrollbar() further down.
+
+    Layout();
+
+    AdjustScrollbars();
+}
+
+void wxDataViewCtrl::SetFocus()
+{
+    if (m_clientArea)
+        m_clientArea->SetFocus();
+}
+
+bool wxDataViewCtrl::AssociateModel( wxDataViewModel *model )
+{
+    if (!wxDataViewCtrlBase::AssociateModel( model ))
+        return false;
+
+    m_notifier = new wxGenericDataViewModelNotifier( m_clientArea );
+
+    model->AddNotifier( m_notifier );
+
+    m_clientArea->DestroyTree();
+
+    m_clientArea->BuildTree(model);
+
+    m_clientArea->UpdateDisplay();
+
+    return true;
+}
+
+#if wxUSE_DRAG_AND_DROP
+
+bool wxDataViewCtrl::EnableDragSource( const wxDataFormat &format )
+{
+    return m_clientArea->EnableDragSource( format );
+}
+
+bool wxDataViewCtrl::EnableDropTarget( const wxDataFormat &format )
+{
+    return m_clientArea->EnableDropTarget( format );
+}
+
+#endif // wxUSE_DRAG_AND_DROP
+
+bool wxDataViewCtrl::AppendColumn( wxDataViewColumn *col )
+{
+    if (!wxDataViewCtrlBase::AppendColumn(col))
+        return false;
+
+    m_cols.Append( col );
+    m_colsBestWidths.push_back(0);
+    OnColumnsCountChanged();
+    return true;
+}
+
+bool wxDataViewCtrl::PrependColumn( wxDataViewColumn *col )
+{
+    if (!wxDataViewCtrlBase::PrependColumn(col))
+        return false;
 
-    if (HasCurrentRow())
-        Refresh();
+    m_cols.Insert( col );
+    m_colsBestWidths.insert(m_colsBestWidths.begin(), 0);
+    OnColumnsCountChanged();
+    return true;
+}
 
-    event.Skip();
+bool wxDataViewCtrl::InsertColumn( unsigned int pos, wxDataViewColumn *col )
+{
+    if (!wxDataViewCtrlBase::InsertColumn(pos,col))
+        return false;
+
+    m_cols.Insert( pos, col );
+    m_colsBestWidths.insert(m_colsBestWidths.begin() + pos, 0);
+    OnColumnsCountChanged();
+    return true;
 }
 
-//-----------------------------------------------------------------------------
-// wxDataViewCtrl
-//-----------------------------------------------------------------------------
+void wxDataViewCtrl::OnColumnChange(unsigned int idx)
+{
+    if ( m_headerArea )
+        m_headerArea->UpdateColumn(idx);
 
-IMPLEMENT_DYNAMIC_CLASS(wxDataViewCtrl, wxDataViewCtrlBase)
+    m_clientArea->UpdateDisplay();
+}
 
-BEGIN_EVENT_TABLE(wxDataViewCtrl, wxDataViewCtrlBase)
-    EVT_SIZE(wxDataViewCtrl::OnSize)
-END_EVENT_TABLE()
+void wxDataViewCtrl::OnColumnsCountChanged()
+{
+    if (m_headerArea)
+        m_headerArea->SetColumnCount(GetColumnCount());
 
-wxDataViewCtrl::~wxDataViewCtrl()
+    m_clientArea->UpdateDisplay();
+}
+
+void wxDataViewCtrl::DoSetExpanderColumn()
 {
-    if (m_notifier)
-        GetModel()->RemoveNotifier( m_notifier );
+    m_clientArea->UpdateDisplay();
 }
 
-void wxDataViewCtrl::Init()
+void wxDataViewCtrl::DoSetIndent()
 {
-    m_notifier = NULL;
+    m_clientArea->UpdateDisplay();
 }
 
-bool wxDataViewCtrl::Create(wxWindow *parent, wxWindowID id,
-           const wxPoint& pos, const wxSize& size,
-           long style, const wxValidator& validator )
+unsigned int wxDataViewCtrl::GetColumnCount() const
 {
-    if (!wxControl::Create( parent, id, pos, size, style | wxScrolledWindowStyle|wxSUNKEN_BORDER, validator))
-        return false;
+    return m_cols.GetCount();
+}
 
-    Init();
+wxDataViewColumn* wxDataViewCtrl::GetColumn( unsigned int idx ) const
+{
+    return m_cols[idx];
+}
 
-#ifdef __WXMAC__
-    MacSetClipChildren( true ) ;
-#endif
+wxDataViewColumn *wxDataViewCtrl::GetColumnAt(unsigned int pos) const
+{
+    // columns can't be reordered if there is no header window which allows
+    // to do this
+    const unsigned idx = m_headerArea ? m_headerArea->GetColumnsOrder()[pos]
+                                    : pos;
 
-    m_clientArea = new wxDataViewMainWindow( this, wxID_ANY );
-#ifdef __WXMSW__
-    m_headerArea = new wxDataViewHeaderWindow( this, wxID_ANY, wxDefaultPosition, wxSize(wxDefaultCoord,22) );
+    return GetColumn(idx);
+}
+
+int wxDataViewCtrl::GetColumnIndex(const wxDataViewColumn *column) const
+{
+    const unsigned count = m_cols.size();
+    for ( unsigned n = 0; n < count; n++ )
+    {
+        if ( m_cols[n] == column )
+            return n;
+    }
+
+    return wxNOT_FOUND;
+}
+
+unsigned int wxDataViewCtrl::GetBestColumnWidth(int idx) const
+{
+    if ( m_colsBestWidths[idx] != 0 )
+        return m_colsBestWidths[idx];
+
+    const int count = m_clientArea->GetRowCount();
+    wxDataViewColumn *column = GetColumn(idx);
+    wxDataViewRenderer *renderer =
+        const_cast<wxDataViewRenderer*>(column->GetRenderer());
+
+    class MaxWidthCalculator
+    {
+    public:
+        MaxWidthCalculator(wxDataViewMainWindow *clientArea,
+                           wxDataViewRenderer *renderer,
+                           const wxDataViewModel *model,
+                           unsigned column)
+            : m_width(0),
+              m_clientArea(clientArea),
+              m_renderer(renderer),
+              m_model(model),
+              m_column(column)
+        {
+        }
+
+        void UpdateWithWidth(int width)
+        {
+            m_width = wxMax(m_width, width);
+        }
+
+        void UpdateWithRow(int row)
+        {
+            wxDataViewItem item = m_clientArea->GetItemByRow(row);
+            m_renderer->PrepareForItem(m_model, item, m_column);
+            m_width = wxMax(m_width, m_renderer->GetSize().x);
+        }
+
+        int GetMaxWidth() const { return m_width; }
+
+    private:
+        int m_width;
+        wxDataViewMainWindow *m_clientArea;
+        wxDataViewRenderer *m_renderer;
+        const wxDataViewModel *m_model;
+        unsigned m_column;
+    };
+
+    MaxWidthCalculator calculator(m_clientArea, renderer,
+                                  GetModel(), column->GetModelColumn());
+
+    if ( m_headerArea )
+    {
+        int header_width = m_headerArea->GetTextExtent(column->GetTitle()).x;
+        // Labels on native MSW header are indented on both sides
+        header_width +=
+            wxRendererNative::Get().GetHeaderButtonMargin(m_headerArea);
+        calculator.UpdateWithWidth(header_width);
+    }
+
+    // The code below deserves some explanation. For very large controls, we
+    // simply can't afford to calculate sizes for all items, it takes too
+    // long. So the best we can do is to check the first and the last N/2
+    // items in the control for some sufficiently large N and calculate best
+    // sizes from that. That can result in the calculated best width being too
+    // small for some outliers, but it's better to get slightly imperfect
+    // result than to wait several seconds after every update. To avoid highly
+    // visible miscalculations, we also include all currently visible items
+    // no matter what.  Finally, the value of N is determined dynamically by
+    // measuring how much time we spent on the determining item widths so far.
+
+#if wxUSE_STOPWATCH
+    int top_part_end = count;
+    static const long CALC_TIMEOUT = 20/*ms*/;
+    // don't call wxStopWatch::Time() too often
+    static const unsigned CALC_CHECK_FREQ = 100;
+    wxStopWatch timer;
 #else
-    m_headerArea = new wxDataViewHeaderWindow( this, wxID_ANY, wxDefaultPosition, wxSize(wxDefaultCoord,25) );
-#endif
+    // use some hard-coded limit, that's the best we can do without timer
+    int top_part_end = wxMin(500, count);
+#endif // wxUSE_STOPWATCH/!wxUSE_STOPWATCH
 
-    SetTargetWindow( m_clientArea );
+    int row = 0;
 
-    wxBoxSizer *sizer = new wxBoxSizer( wxVERTICAL );
-    sizer->Add( m_headerArea, 0, wxGROW );
-    sizer->Add( m_clientArea, 1, wxGROW );
-    SetSizer( sizer );
+    for ( row = 0; row < top_part_end; row++ )
+    {
+#if wxUSE_STOPWATCH
+        if ( row % CALC_CHECK_FREQ == CALC_CHECK_FREQ-1 &&
+             timer.Time() > CALC_TIMEOUT )
+            break;
+#endif // wxUSE_STOPWATCH
+        calculator.UpdateWithRow(row);
+    }
+
+    // row is the first unmeasured item now; that's out value of N/2
+
+    if ( row < count )
+    {
+        top_part_end = row;
+
+        // add bottom N/2 items now:
+        const int bottom_part_start = wxMax(row, count - row);
+        for ( row = bottom_part_start; row < count; row++ )
+        {
+            calculator.UpdateWithRow(row);
+        }
+
+        // finally, include currently visible items in the calculation:
+        const wxPoint origin = CalcUnscrolledPosition(wxPoint(0, 0));
+        int first_visible = m_clientArea->GetLineAt(origin.y);
+        int last_visible = m_clientArea->GetLineAt(origin.y + GetClientSize().y);
+
+        first_visible = wxMax(first_visible, top_part_end);
+        last_visible = wxMin(bottom_part_start, last_visible);
+
+        for ( row = first_visible; row < last_visible; row++ )
+        {
+            calculator.UpdateWithRow(row);
+        }
+
+        wxLogTrace("dataview",
+                   "determined best size from %d top, %d bottom plus %d more visible items out of %d total",
+                   top_part_end,
+                   count - bottom_part_start,
+                   wxMax(0, last_visible - first_visible),
+                   count);
+    }
+
+    int max_width = calculator.GetMaxWidth();
+    if ( max_width > 0 )
+        max_width += 2 * PADDING_RIGHTLEFT;
+
+    const_cast<wxDataViewCtrl*>(this)->m_colsBestWidths[idx] = max_width;
+    return max_width;
+
+    #undef MEASURE_ITEM
+}
+
+void wxDataViewCtrl::ColumnMoved(wxDataViewColumn * WXUNUSED(col),
+                                unsigned int WXUNUSED(new_pos))
+{
+    // do _not_ reorder m_cols elements here, they should always be in the
+    // order in which columns were added, we only display the columns in
+    // different order
+    m_clientArea->UpdateDisplay();
+}
+
+bool wxDataViewCtrl::DeleteColumn( wxDataViewColumn *column )
+{
+    wxDataViewColumnList::compatibility_iterator ret = m_cols.Find( column );
+    if (!ret)
+        return false;
+
+    m_colsBestWidths.erase(m_colsBestWidths.begin() + GetColumnIndex(column));
+    m_cols.Erase(ret);
+    OnColumnsCountChanged();
 
     return true;
 }
 
-#ifdef __WXMSW__
-WXLRESULT wxDataViewCtrl::MSWWindowProc(WXUINT nMsg,
-                                       WXWPARAM wParam,
-                                       WXLPARAM lParam)
+bool wxDataViewCtrl::ClearColumns()
 {
-    WXLRESULT rc = wxDataViewCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
+    m_cols.Clear();
+    m_colsBestWidths.clear();
+    OnColumnsCountChanged();
+    return true;
+}
 
-#ifndef __WXWINCE__
-    // we need to process arrows ourselves for scrolling
-    if ( nMsg == WM_GETDLGCODE )
+void wxDataViewCtrl::InvalidateColBestWidth(int idx)
+{
+    m_colsBestWidths[idx] = 0;
+
+    if ( m_headerArea )
+        m_headerArea->UpdateColumn(idx);
+}
+
+void wxDataViewCtrl::InvalidateColBestWidths()
+{
+    m_colsBestWidths.clear();
+    m_colsBestWidths.resize(m_cols.size());
+
+    if ( m_headerArea )
     {
-        rc |= DLGC_WANTARROWS;
+        // this updates visual appearance of columns 0 and up, not just 0
+        m_headerArea->UpdateColumn(0);
+    }
+}
+
+int wxDataViewCtrl::GetColumnPosition( const wxDataViewColumn *column ) const
+{
+#if 1
+    unsigned int len = GetColumnCount();
+    for ( unsigned int i = 0; i < len; i++ )
+    {
+        wxDataViewColumn * col = GetColumnAt(i);
+        if (column==col)
+            return i;
     }
+
+    return wxNOT_FOUND;
+#else
+    // This returns the position in pixels which is not what we want.
+    int ret = 0,
+        dummy = 0;
+    unsigned int len = GetColumnCount();
+    for ( unsigned int i = 0; i < len; i++ )
+    {
+        wxDataViewColumn * col = GetColumnAt(i);
+        if (col->IsHidden())
+            continue;
+        ret += col->GetWidth();
+        if (column==col)
+        {
+            CalcScrolledPosition( ret, dummy, &ret, &dummy );
+            break;
+        }
+    }
+    return ret;
 #endif
+}
 
-    return rc;
+wxDataViewColumn *wxDataViewCtrl::GetSortingColumn() const
+{
+    return m_sortingColumnIdx == wxNOT_FOUND ? NULL
+                                            : GetColumn(m_sortingColumnIdx);
 }
-#endif
 
-void wxDataViewCtrl::OnSize( wxSizeEvent &WXUNUSED(event) )
+wxDataViewItem wxDataViewCtrl::DoGetCurrentItem() const
 {
-    // We need to override OnSize so that our scrolled
-    // window a) does call Layout() to use sizers for
-    // positioning the controls but b) does not query
-    // the sizer for their size and use that for setting
-    // the scrollable area as set that ourselves by
-    // calling SetScrollbar() further down.
+    return GetItemByRow(m_clientArea->GetCurrentRow());
+}
 
-    Layout();
+void wxDataViewCtrl::DoSetCurrentItem(const wxDataViewItem& item)
+{
+    const int row = m_clientArea->GetRowByItem(item);
 
-    AdjustScrollbars();
+    const unsigned oldCurrent = m_clientArea->GetCurrentRow();
+    if ( static_cast<unsigned>(row) != oldCurrent )
+    {
+        m_clientArea->ChangeCurrentRow(row);
+        m_clientArea->RefreshRow(oldCurrent);
+        m_clientArea->RefreshRow(row);
+    }
 }
 
-bool wxDataViewCtrl::AssociateModel( wxDataViewListModel *model )
+// Selection code with wxDataViewItem as parameters
+wxDataViewItem wxDataViewCtrl::GetSelection() const
 {
-    if (!wxDataViewCtrlBase::AssociateModel( model ))
-        return false;
+    return m_clientArea->GetSelection();
+}
 
-    m_notifier = new wxGenericDataViewListModelNotifier( m_clientArea );
+int wxDataViewCtrl::GetSelections( wxDataViewItemArray & sel ) const
+{
+    sel.Empty();
+    wxDataViewSelection selection = m_clientArea->GetSelections();
+    int len = selection.GetCount();
+    for( int i = 0; i < len; i ++)
+    {
+        unsigned int row = selection[i];
+        sel.Add( m_clientArea->GetItemByRow( row ) );
+    }
+    return len;
+}
 
-    model->AddNotifier( m_notifier );
+void wxDataViewCtrl::SetSelections( const wxDataViewItemArray & sel )
+{
+    wxDataViewSelection selection(wxDataViewSelectionCmp);
 
-    m_clientArea->UpdateDisplay();
+    wxDataViewItem last_parent;
 
-    return true;
+    int len = sel.GetCount();
+    for( int i = 0; i < len; i ++ )
+    {
+        wxDataViewItem item = sel[i];
+        wxDataViewItem parent = GetModel()->GetParent( item );
+        if (parent)
+        {
+            if (parent != last_parent)
+                ExpandAncestors(item);
+        }
+
+        last_parent = parent;
+        int row = m_clientArea->GetRowByItem( item );
+        if( row >= 0 )
+            selection.Add( static_cast<unsigned int>(row) );
+    }
+
+    m_clientArea->SetSelections( selection );
 }
 
-bool wxDataViewCtrl::AppendColumn( wxDataViewColumn *col )
+void wxDataViewCtrl::Select( const wxDataViewItem & item )
 {
-    if (!wxDataViewCtrlBase::AppendColumn(col))
-        return false;
+    ExpandAncestors( item );
 
-    m_clientArea->UpdateDisplay();
+    int row = m_clientArea->GetRowByItem( item );
+    if( row >= 0 )
+    {
+        // Unselect all rows before select another in the single select mode
+        if (m_clientArea->IsSingleSel())
+            m_clientArea->SelectAllRows(false);
 
-    return true;
+        m_clientArea->SelectRow(row, true);
+
+        // Also set focus to the selected item
+        m_clientArea->ChangeCurrentRow( row );
+    }
 }
 
-#endif
-    // !wxUSE_GENERICDATAVIEWCTRL
+void wxDataViewCtrl::Unselect( const wxDataViewItem & item )
+{
+    int row = m_clientArea->GetRowByItem( item );
+    if( row >= 0 )
+        m_clientArea->SelectRow(row, false);
+}
 
-#endif
-    // wxUSE_DATAVIEWCTRL
+bool wxDataViewCtrl::IsSelected( const wxDataViewItem & item ) const
+{
+    int row = m_clientArea->GetRowByItem( item );
+    if( row >= 0 )
+    {
+        return m_clientArea->IsRowSelected(row);
+    }
+    return false;
+}
+
+// Selection code with row number as parameter
+int wxDataViewCtrl::GetSelections( wxArrayInt & sel ) const
+{
+    sel.Empty();
+    wxDataViewSelection selection = m_clientArea->GetSelections();
+    int len = selection.GetCount();
+    for( int i = 0; i < len; i ++)
+    {
+        unsigned int row = selection[i];
+        sel.Add( row );
+    }
+    return len;
+}
+
+void wxDataViewCtrl::SetSelections( const wxArrayInt & sel )
+{
+    wxDataViewSelection selection(wxDataViewSelectionCmp);
+    int len = sel.GetCount();
+    for( int i = 0; i < len; i ++ )
+    {
+        int row = sel[i];
+        if( row >= 0 )
+            selection.Add( static_cast<unsigned int>(row) );
+    }
+    m_clientArea->SetSelections( selection );
+}
+
+void wxDataViewCtrl::Select( int row )
+{
+    if( row >= 0 )
+    {
+        if (m_clientArea->IsSingleSel())
+            m_clientArea->SelectAllRows(false);
+        m_clientArea->SelectRow( row, true );
+    }
+}
+
+void wxDataViewCtrl::Unselect( int row )
+{
+    if( row >= 0 )
+        m_clientArea->SelectRow(row, false);
+}
+
+bool wxDataViewCtrl::IsSelected( int row ) const
+{
+    if( row >= 0 )
+        return m_clientArea->IsRowSelected(row);
+    return false;
+}
+
+void wxDataViewCtrl::SelectRange( int from, int to )
+{
+    wxArrayInt sel;
+    for( int i = from; i < to; i ++ )
+        sel.Add( i );
+    m_clientArea->Select(sel);
+}
+
+void wxDataViewCtrl::UnselectRange( int from, int to )
+{
+    wxDataViewSelection sel = m_clientArea->GetSelections();
+    for( int i = from; i < to; i ++ )
+        if( sel.Index( i ) != wxNOT_FOUND )
+            sel.Remove( i );
+    m_clientArea->SetSelections(sel);
+}
+
+void wxDataViewCtrl::SelectAll()
+{
+    m_clientArea->SelectAllRows(true);
+}
+
+void wxDataViewCtrl::UnselectAll()
+{
+    m_clientArea->SelectAllRows(false);
+}
+
+void wxDataViewCtrl::EnsureVisible( int row, int column )
+{
+    if( row < 0 )
+        row = 0;
+    if( row > (int) m_clientArea->GetRowCount() )
+        row = m_clientArea->GetRowCount();
+
+    int first = m_clientArea->GetFirstVisibleRow();
+    int last = m_clientArea->GetLastVisibleRow();
+    if( row < first )
+        m_clientArea->ScrollTo( row, column );
+    else if( row > last )
+        m_clientArea->ScrollTo( row - last + first, column );
+    else
+        m_clientArea->ScrollTo( first, column );
+}
+
+void wxDataViewCtrl::EnsureVisible( const wxDataViewItem & item, const wxDataViewColumn * column )
+{
+    ExpandAncestors( item );
+
+    m_clientArea->RecalculateDisplay();
+
+    int row = m_clientArea->GetRowByItem(item);
+    if( row >= 0 )
+    {
+        if( column == NULL )
+            EnsureVisible(row, -1);
+        else
+            EnsureVisible( row, GetColumnIndex(column) );
+    }
+
+}
+
+void wxDataViewCtrl::HitTest( const wxPoint & point, wxDataViewItem & item,
+                              wxDataViewColumn* &column ) const
+{
+    m_clientArea->HitTest(point, item, column);
+}
+
+wxRect wxDataViewCtrl::GetItemRect( const wxDataViewItem & item,
+                                    const wxDataViewColumn* column ) const
+{
+    return m_clientArea->GetItemRect(item, column);
+}
+
+wxDataViewItem wxDataViewCtrl::GetItemByRow( unsigned int row ) const
+{
+    return m_clientArea->GetItemByRow( row );
+}
+
+int wxDataViewCtrl::GetRowByItem( const wxDataViewItem & item ) const
+{
+    return m_clientArea->GetRowByItem( item );
+}
+
+void wxDataViewCtrl::Expand( const wxDataViewItem & item )
+{
+    ExpandAncestors( item );
+
+    int row = m_clientArea->GetRowByItem( item );
+    if (row != -1)
+        m_clientArea->Expand(row);
+}
+
+void wxDataViewCtrl::Collapse( const wxDataViewItem & item )
+{
+    int row = m_clientArea->GetRowByItem( item );
+    if (row != -1)
+        m_clientArea->Collapse(row);
+}
+
+bool wxDataViewCtrl::IsExpanded( const wxDataViewItem & item ) const
+{
+    int row = m_clientArea->GetRowByItem( item );
+    if (row != -1)
+        return m_clientArea->IsExpanded(row);
+    return false;
+}
+
+void wxDataViewCtrl::StartEditor( const wxDataViewItem & item, unsigned int column )
+{
+    wxDataViewColumn* col = GetColumn( column );
+    if (!col)
+        return;
+
+    wxRect itemRect = GetItemRect(item, col);
+    wxDataViewRenderer* renderer = col->GetRenderer();
+    if (renderer->GetMode() == wxDATAVIEW_CELL_EDITABLE)
+        renderer->StartEditing(item, itemRect);
+}
+
+#endif // !wxUSE_GENERICDATAVIEWCTRL
+
+#endif // wxUSE_DATAVIEWCTRL