src/generic/datavgen.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/datavgen.cpp
   3 // Purpose:     wxDataViewCtrl generic implementation
   4 // Author:      Robert Roebling
   5 // Modified by: Francesco Montorsi, Guru Kathiresan, Bo Yang
   6 // Id:          $Id$
   7 // Copyright:   (c) 1998 Robert Roebling
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // For compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 #if wxUSE_DATAVIEWCTRL
  19
  20 #include "wx/dataview.h"
  21
  22 #ifdef wxUSE_GENERICDATAVIEWCTRL
  23
  24 #ifndef WX_PRECOMP
  25     #ifdef __WXMSW__
  26         #include "wx/msw/private.h"
  27         #include "wx/msw/wrapwin.h"
  28         #include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
  29     #endif
  30     #include "wx/sizer.h"
  31     #include "wx/log.h"
  32     #include "wx/dcclient.h"
  33     #include "wx/timer.h"
  34     #include "wx/settings.h"
  35     #include "wx/msgdlg.h"
  36     #include "wx/dcscreen.h"
  37     #include "wx/frame.h"
  38 #endif
  39
  40 #include "wx/stockitem.h"
  41 #include "wx/calctrl.h"
  42 #include "wx/popupwin.h"
  43 #include "wx/renderer.h"
  44 #include "wx/dcbuffer.h"
  45 #include "wx/icon.h"
  46 #include "wx/list.h"
  47 #include "wx/listimpl.cpp"
  48 #include "wx/imaglist.h"
  49 #include "wx/headerctrl.h"
  50 #include "wx/dnd.h"
  51 #include "wx/stopwatch.h"
  52
  53 //-----------------------------------------------------------------------------
  54 // classes
  55 //-----------------------------------------------------------------------------
  56
  57 class wxDataViewColumn;
  58 class wxDataViewHeaderWindow;
  59 class wxDataViewCtrl;
  60
  61 //-----------------------------------------------------------------------------
  62 // classes
  63 //-----------------------------------------------------------------------------
  64
  65 static const int SCROLL_UNIT_X = 15;
  66
  67 // the cell padding on the left/right
  68 static const int PADDING_RIGHTLEFT = 3;
  69
  70 // the expander space margin
  71 static const int EXPANDER_MARGIN = 4;
  72
  73 #ifdef __WXMSW__
  74 static const int EXPANDER_OFFSET = 4;
  75 #else
  76 static const int EXPANDER_OFFSET = 1;
  77 #endif
  78
  79 // Below is the compare stuff.
  80 // For the generic implementation, both the leaf nodes and the nodes are sorted for
  81 // fast search when needed
  82 static wxDataViewModel* g_model;
  83 static int g_column = -2;
  84 static bool g_asending = true;
  85
  86 //-----------------------------------------------------------------------------
  87 // wxDataViewColumn
  88 //-----------------------------------------------------------------------------
  89
  90 void wxDataViewColumn::Init(int width, wxAlignment align, int flags)
  91 {
  92     m_width = width;
  93     m_minWidth = 0;
  94     m_align = align;
  95     m_flags = flags;
  96     m_sort = false;
  97     m_sortAscending = true;
  98 }
  99
 100 int wxDataViewColumn::GetWidth() const
 101 {
 102     switch ( m_width )
 103     {
 104         case wxCOL_WIDTH_DEFAULT:
 105             return wxDVC_DEFAULT_WIDTH;
 106
 107         case wxCOL_WIDTH_AUTOSIZE:
 108             wxCHECK_MSG( m_owner, wxDVC_DEFAULT_WIDTH, "no owner control" );
 109             return m_owner->GetBestColumnWidth(m_owner->GetColumnIndex(this));
 110
 111         default:
 112             return m_width;
 113     }
 114 }
 115
 116 void wxDataViewColumn::UpdateDisplay()
 117 {
 118     if (m_owner)
 119     {
 120         int idx = m_owner->GetColumnIndex( this );
 121         m_owner->OnColumnChange( idx );
 122     }
 123 }
 124
 125 //-----------------------------------------------------------------------------
 126 // wxDataViewHeaderWindow
 127 //-----------------------------------------------------------------------------
 128
 129 class wxDataViewHeaderWindow : public wxHeaderCtrl
 130 {
 131 public:
 132     wxDataViewHeaderWindow(wxDataViewCtrl *parent)
 133         : wxHeaderCtrl(parent)
 134     {
 135     }
 136
 137     wxDataViewCtrl *GetOwner() const
 138         { return static_cast<wxDataViewCtrl *>(GetParent()); }
 139
 140 protected:
 141     // implement/override wxHeaderCtrl functions by forwarding them to the main
 142     // control
 143     virtual const wxHeaderColumn& GetColumn(unsigned int idx) const
 144     {
 145         return *(GetOwner()->GetColumn(idx));
 146     }
 147
 148     virtual bool UpdateColumnWidthToFit(unsigned int idx, int widthTitle)
 149     {
 150         wxDataViewCtrl * const owner = GetOwner();
 151
 152         int widthContents = owner->GetBestColumnWidth(idx);
 153         owner->GetColumn(idx)->SetWidth(wxMax(widthTitle, widthContents));
 154         owner->OnColumnChange(idx);
 155
 156         return true;
 157     }
 158
 159 private:
 160     bool SendEvent(wxEventType type, unsigned int n)
 161     {
 162         wxDataViewCtrl * const owner = GetOwner();
 163         wxDataViewEvent event(type, owner->GetId());
 164
 165         event.SetEventObject(owner);
 166         event.SetColumn(n);
 167         event.SetDataViewColumn(owner->GetColumn(n));
 168         event.SetModel(owner->GetModel());
 169
 170         // for events created by wxDataViewHeaderWindow the
 171         // row / value fields are not valid
 172         return owner->GetEventHandler()->ProcessEvent(event);
 173     }
 174
 175     void OnClick(wxHeaderCtrlEvent& event)
 176     {
 177         const unsigned idx = event.GetColumn();
 178
 179         if ( SendEvent(wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_CLICK, idx) )
 180             return;
 181
 182         // default handling for the column click is to sort by this column or
 183         // toggle its sort order
 184         wxDataViewCtrl * const owner = GetOwner();
 185         wxDataViewColumn * const col = owner->GetColumn(idx);
 186         if ( !col->IsSortable() )
 187         {
 188             // no default handling for non-sortable columns
 189             event.Skip();
 190             return;
 191         }
 192
 193         if ( col->IsSortKey() )
 194         {
 195             // already using this column for sorting, just change the order
 196             col->ToggleSortOrder();
 197         }
 198         else // not using this column for sorting yet
 199         {
 200             // first unset the old sort column if any
 201             int oldSortKey = owner->GetSortingColumnIndex();
 202             if ( oldSortKey != wxNOT_FOUND )
 203             {
 204                 owner->GetColumn(oldSortKey)->UnsetAsSortKey();
 205                 owner->OnColumnChange(oldSortKey);
 206             }
 207
 208             owner->SetSortingColumnIndex(idx);
 209             col->SetAsSortKey();
 210         }
 211
 212         wxDataViewModel * const model = owner->GetModel();
 213         if ( model )
 214             model->Resort();
 215
 216         owner->OnColumnChange(idx);
 217     }
 218
 219     void OnRClick(wxHeaderCtrlEvent& event)
 220     {
 221         if ( !SendEvent(wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_RIGHT_CLICK,
 222                         event.GetColumn()) )
 223             event.Skip();
 224     }
 225
 226     void OnResize(wxHeaderCtrlEvent& event)
 227     {
 228         wxDataViewCtrl * const owner = GetOwner();
 229
 230         const unsigned col = event.GetColumn();
 231         owner->GetColumn(col)->SetWidth(event.GetWidth());
 232         GetOwner()->OnColumnChange(col);
 233     }
 234
 235     void OnEndReorder(wxHeaderCtrlEvent& event)
 236     {
 237         wxDataViewCtrl * const owner = GetOwner();
 238         owner->ColumnMoved(owner->GetColumn(event.GetColumn()),
 239                         event.GetNewOrder());
 240     }
 241
 242     DECLARE_EVENT_TABLE()
 243     wxDECLARE_NO_COPY_CLASS(wxDataViewHeaderWindow);
 244 };
 245
 246 BEGIN_EVENT_TABLE(wxDataViewHeaderWindow, wxHeaderCtrl)
 247     EVT_HEADER_CLICK(wxID_ANY, wxDataViewHeaderWindow::OnClick)
 248     EVT_HEADER_RIGHT_CLICK(wxID_ANY, wxDataViewHeaderWindow::OnRClick)
 249
 250     EVT_HEADER_RESIZING(wxID_ANY, wxDataViewHeaderWindow::OnResize)
 251     EVT_HEADER_END_RESIZE(wxID_ANY, wxDataViewHeaderWindow::OnResize)
 252
 253     EVT_HEADER_END_REORDER(wxID_ANY, wxDataViewHeaderWindow::OnEndReorder)
 254 END_EVENT_TABLE()
 255
 256 //-----------------------------------------------------------------------------
 257 // wxDataViewRenameTimer
 258 //-----------------------------------------------------------------------------
 259
 260 class wxDataViewRenameTimer: public wxTimer
 261 {
 262 private:
 263     wxDataViewMainWindow *m_owner;
 264
 265 public:
 266     wxDataViewRenameTimer( wxDataViewMainWindow *owner );
 267     void Notify();
 268 };
 269
 270 //-----------------------------------------------------------------------------
 271 // wxDataViewTreeNode
 272 //-----------------------------------------------------------------------------
 273
 274 class wxDataViewTreeNode;
 275 WX_DEFINE_ARRAY( wxDataViewTreeNode *, wxDataViewTreeNodes );
 276 WX_DEFINE_ARRAY( void* , wxDataViewTreeLeaves);
 277
 278 int LINKAGEMODE wxGenericTreeModelNodeCmp( wxDataViewTreeNode ** node1,
 279                                            wxDataViewTreeNode ** node2);
 280 int LINKAGEMODE wxGenericTreeModelItemCmp( void ** id1, void ** id2);
 281
 282 class wxDataViewTreeNode
 283 {
 284 public:
 285     wxDataViewTreeNode( wxDataViewTreeNode * parent = NULL )
 286     {
 287         m_parent = parent;
 288         if (!parent)
 289             m_open = true;
 290         else
 291             m_open = false;
 292         m_hasChildren = false;
 293         m_subTreeCount  = 0;
 294     }
 295
 296     ~wxDataViewTreeNode()
 297     {
 298     }
 299
 300     wxDataViewTreeNode * GetParent() const { return m_parent; }
 301     void SetParent( wxDataViewTreeNode * parent ) { m_parent = parent; }
 302     wxDataViewTreeNodes &  GetNodes() { return m_nodes; }
 303     wxDataViewTreeLeaves & GetChildren() { return m_leaves; }
 304
 305     void AddNode( wxDataViewTreeNode * node )
 306     {
 307         m_leaves.Add( node->GetItem().GetID() );
 308         if (g_column >= -1)
 309             m_leaves.Sort( &wxGenericTreeModelItemCmp );
 310         m_nodes.Add( node );
 311         if (g_column >= -1)
 312             m_nodes.Sort( &wxGenericTreeModelNodeCmp );
 313     }
 314     void AddLeaf( void * leaf )
 315     {
 316         m_leaves.Add( leaf );
 317         if (g_column >= -1)
 318             m_leaves.Sort( &wxGenericTreeModelItemCmp );
 319     }
 320
 321     wxDataViewItem & GetItem() { return m_item; }
 322     const wxDataViewItem & GetItem() const { return m_item; }
 323     void SetItem( const wxDataViewItem & item ) { m_item = item; }
 324
 325     unsigned int GetChildrenNumber() const { return m_leaves.GetCount(); }
 326     unsigned int GetNodeNumber() const { return m_nodes.GetCount(); }
 327     int GetIndentLevel() const
 328     {
 329         int ret = 0;
 330         const wxDataViewTreeNode * node = this;
 331         while( node->GetParent()->GetParent() != NULL )
 332         {
 333             node = node->GetParent();
 334             ret ++;
 335         }
 336         return ret;
 337     }
 338
 339     bool IsOpen() const
 340     {
 341         return m_open;
 342     }
 343
 344     void ToggleOpen()
 345     {
 346         int len = m_nodes.GetCount();
 347         int sum = 0;
 348         for ( int i = 0;i < len; i ++)
 349             sum += m_nodes[i]->GetSubTreeCount();
 350
 351         sum += m_leaves.GetCount();
 352         if (m_open)
 353         {
 354             ChangeSubTreeCount(-sum);
 355             m_open = !m_open;
 356         }
 357         else
 358         {
 359             m_open = !m_open;
 360             ChangeSubTreeCount(sum);
 361         }
 362     }
 363     bool HasChildren() const { return m_hasChildren; }
 364     void SetHasChildren( bool has ){ m_hasChildren = has; }
 365
 366     void SetSubTreeCount( int num ) { m_subTreeCount = num; }
 367     int GetSubTreeCount() const { return m_subTreeCount; }
 368     void ChangeSubTreeCount( int num )
 369     {
 370         if( !m_open )
 371             return;
 372         m_subTreeCount += num;
 373         if( m_parent )
 374             m_parent->ChangeSubTreeCount(num);
 375     }
 376
 377     void Resort()
 378     {
 379         if (g_column >= -1)
 380         {
 381             m_nodes.Sort( &wxGenericTreeModelNodeCmp );
 382             int len = m_nodes.GetCount();
 383             for (int i = 0; i < len; i ++)
 384                 m_nodes[i]->Resort();
 385             m_leaves.Sort( &wxGenericTreeModelItemCmp );
 386         }
 387     }
 388
 389 private:
 390     wxDataViewTreeNode  *m_parent;
 391     wxDataViewTreeNodes  m_nodes;
 392     wxDataViewTreeLeaves m_leaves;
 393     wxDataViewItem       m_item;
 394     bool                 m_open;
 395     bool                 m_hasChildren;
 396     int                  m_subTreeCount;
 397 };
 398
 399 int LINKAGEMODE wxGenericTreeModelNodeCmp( wxDataViewTreeNode ** node1,
 400                                            wxDataViewTreeNode ** node2)
 401 {
 402     return g_model->Compare( (*node1)->GetItem(), (*node2)->GetItem(), g_column, g_asending );
 403 }
 404
 405 int LINKAGEMODE wxGenericTreeModelItemCmp( void ** id1, void ** id2)
 406 {
 407     return g_model->Compare( *id1, *id2, g_column, g_asending );
 408 }
 409
 410
 411 //-----------------------------------------------------------------------------
 412 // wxDataViewMainWindow
 413 //-----------------------------------------------------------------------------
 414
 415 WX_DEFINE_SORTED_USER_EXPORTED_ARRAY_SIZE_T(unsigned int, wxDataViewSelection,
 416                                             WXDLLIMPEXP_ADV);
 417 WX_DECLARE_LIST(wxDataViewItem, ItemList);
 418 WX_DEFINE_LIST(ItemList)
 419
 420 class wxDataViewMainWindow: public wxWindow
 421 {
 422 public:
 423     wxDataViewMainWindow( wxDataViewCtrl *parent,
 424                             wxWindowID id,
 425                             const wxPoint &pos = wxDefaultPosition,
 426                             const wxSize &size = wxDefaultSize,
 427                             const wxString &name = wxT("wxdataviewctrlmainwindow") );
 428     virtual ~wxDataViewMainWindow();
 429
 430     bool IsList() const { return GetOwner()->GetModel()->IsListModel(); }
 431     bool IsVirtualList() const { return m_root == NULL; }
 432
 433     // notifications from wxDataViewModel
 434     bool ItemAdded( const wxDataViewItem &parent, const wxDataViewItem &item );
 435     bool ItemDeleted( const wxDataViewItem &parent, const wxDataViewItem &item );
 436     bool ItemChanged( const wxDataViewItem &item );
 437     bool ValueChanged( const wxDataViewItem &item, unsigned int model_column );
 438     bool Cleared();
 439     void Resort()
 440     {
 441         if (!IsVirtualList())
 442         {
 443             SortPrepare();
 444             m_root->Resort();
 445         }
 446         UpdateDisplay();
 447     }
 448
 449     void SortPrepare()
 450     {
 451         g_model = GetOwner()->GetModel();
 452         wxDataViewColumn* col = GetOwner()->GetSortingColumn();
 453         if( !col )
 454         {
 455             if (g_model->HasDefaultCompare())
 456                 g_column = -1;
 457             else
 458                 g_column = -2;
 459
 460             g_asending = true;
 461             return;
 462         }
 463         g_column = col->GetModelColumn();
 464         g_asending = col->IsSortOrderAscending();
 465     }
 466
 467     void SetOwner( wxDataViewCtrl* owner ) { m_owner = owner; }
 468     wxDataViewCtrl *GetOwner() { return m_owner; }
 469     const wxDataViewCtrl *GetOwner() const { return m_owner; }
 470
 471 #if wxUSE_DRAG_AND_DROP
 472     wxBitmap CreateItemBitmap( unsigned int row, int &indent );
 473 #endif // wxUSE_DRAG_AND_DROP
 474     void OnPaint( wxPaintEvent &event );
 475     void OnArrowChar(unsigned int newCurrent, const wxKeyEvent& event);
 476     void OnChar( wxKeyEvent &event );
 477     void OnMouse( wxMouseEvent &event );
 478     void OnSetFocus( wxFocusEvent &event );
 479     void OnKillFocus( wxFocusEvent &event );
 480
 481     void UpdateDisplay();
 482     void RecalculateDisplay();
 483     void OnInternalIdle();
 484
 485     void OnRenameTimer();
 486
 487     void ScrollWindow( int dx, int dy, const wxRect *rect = NULL );
 488     void ScrollTo( int rows, int column );
 489
 490     unsigned GetCurrentRow() const { return m_currentRow; }
 491     bool HasCurrentRow() { return m_currentRow != (unsigned int)-1; }
 492     void ChangeCurrentRow( unsigned int row );
 493
 494     bool IsSingleSel() const { return !GetParent()->HasFlag(wxDV_MULTIPLE); }
 495     bool IsEmpty() { return GetRowCount() == 0; }
 496
 497     int GetCountPerPage() const;
 498     int GetEndOfLastCol() const;
 499     unsigned int GetFirstVisibleRow() const;
 500
 501     // I change this method to un const because in the tree view,
 502     // the displaying number of the tree are changing along with the
 503     // expanding/collapsing of the tree nodes
 504     unsigned int GetLastVisibleRow();
 505     unsigned int GetRowCount();
 506
 507     wxDataViewItem GetSelection() const;
 508     wxDataViewSelection GetSelections(){ return m_selection; }
 509     void SetSelections( const wxDataViewSelection & sel )
 510         { m_selection = sel; UpdateDisplay(); }
 511     void Select( const wxArrayInt& aSelections );
 512     void SelectAllRows( bool on );
 513     void SelectRow( unsigned int row, bool on );
 514     void SelectRows( unsigned int from, unsigned int to, bool on );
 515     void ReverseRowSelection( unsigned int row );
 516     bool IsRowSelected( unsigned int row );
 517     void SendSelectionChangedEvent( const wxDataViewItem& item);
 518
 519     void RefreshRow( unsigned int row );
 520     void RefreshRows( unsigned int from, unsigned int to );
 521     void RefreshRowsAfter( unsigned int firstRow );
 522
 523     // returns the colour to be used for drawing the rules
 524     wxColour GetRuleColour() const
 525     {
 526         return wxSystemSettings::GetColour(wxSYS_COLOUR_3DLIGHT);
 527     }
 528
 529     wxRect GetLineRect( unsigned int row ) const;
 530
 531     int GetLineStart( unsigned int row ) const;  // row * m_lineHeight in fixed mode
 532     int GetLineHeight( unsigned int row ) const; // m_lineHeight in fixed mode
 533     int GetLineAt( unsigned int y ) const;       // y / m_lineHeight in fixed mode
 534
 535     // Some useful functions for row and item mapping
 536     wxDataViewItem GetItemByRow( unsigned int row ) const;
 537     int GetRowByItem( const wxDataViewItem & item ) const;
 538
 539     // Methods for building the mapping tree
 540     void BuildTree( wxDataViewModel  * model );
 541     void DestroyTree();
 542     void HitTest( const wxPoint & point, wxDataViewItem & item, wxDataViewColumn* &column );
 543     wxRect GetItemRect( const wxDataViewItem & item, const wxDataViewColumn* column );
 544
 545     void Expand( unsigned int row );
 546     void Collapse( unsigned int row );
 547     bool IsExpanded( unsigned int row ) const;
 548     bool HasChildren( unsigned int row ) const;
 549
 550 #if wxUSE_DRAG_AND_DROP
 551     bool EnableDragSource( const wxDataFormat &format );
 552     bool EnableDropTarget( const wxDataFormat &format );
 553
 554     void RemoveDropHint();
 555     wxDragResult OnDragOver( wxDataFormat format, wxCoord x, wxCoord y, wxDragResult def );
 556     bool OnDrop( wxDataFormat format, wxCoord x, wxCoord y );
 557     wxDragResult OnData( wxDataFormat format, wxCoord x, wxCoord y, wxDragResult def );
 558     void OnLeave();
 559 #endif // wxUSE_DRAG_AND_DROP
 560
 561 private:
 562     wxDataViewTreeNode * GetTreeNodeByRow( unsigned int row ) const;
 563     // We did not need this temporarily
 564     // wxDataViewTreeNode * GetTreeNodeByItem( const wxDataViewItem & item );
 565
 566     int RecalculateCount();
 567
 568     wxDataViewEvent SendExpanderEvent( wxEventType type, const wxDataViewItem & item );
 569
 570     wxDataViewTreeNode * FindNode( const wxDataViewItem & item );
 571
 572 private:
 573     wxDataViewCtrl             *m_owner;
 574     int                         m_lineHeight;
 575     bool                        m_dirty;
 576
 577     wxDataViewColumn           *m_currentCol;
 578     unsigned int                m_currentRow;
 579     wxDataViewSelection         m_selection;
 580
 581     wxDataViewRenameTimer      *m_renameTimer;
 582     bool                        m_lastOnSame;
 583
 584     bool                        m_hasFocus;
 585
 586 #if wxUSE_DRAG_AND_DROP
 587     int                         m_dragCount;
 588     wxPoint                     m_dragStart;
 589
 590     bool                        m_dragEnabled;
 591     wxDataFormat                m_dragFormat;
 592
 593     bool                        m_dropEnabled;
 594     wxDataFormat                m_dropFormat;
 595     bool                        m_dropHint;
 596     unsigned int                m_dropHintLine;
 597 #endif // wxUSE_DRAG_AND_DROP
 598
 599     // for double click logic
 600     unsigned int m_lineLastClicked,
 601         m_lineBeforeLastClicked,
 602         m_lineSelectSingleOnUp;
 603
 604     // the pen used to draw horiz/vertical rules
 605     wxPen m_penRule;
 606
 607     // the pen used to draw the expander and the lines
 608     wxPen m_penExpander;
 609
 610     // This is the tree structure of the model
 611     wxDataViewTreeNode * m_root;
 612     int m_count;
 613
 614     // This is the tree node under the cursor
 615     wxDataViewTreeNode * m_underMouse;
 616
 617 private:
 618     DECLARE_DYNAMIC_CLASS(wxDataViewMainWindow)
 619     DECLARE_EVENT_TABLE()
 620 };
 621
 622 // ---------------------------------------------------------
 623 // wxGenericDataViewModelNotifier
 624 // ---------------------------------------------------------
 625
 626 class wxGenericDataViewModelNotifier: public wxDataViewModelNotifier
 627 {
 628 public:
 629     wxGenericDataViewModelNotifier( wxDataViewMainWindow *mainWindow )
 630         { m_mainWindow = mainWindow; }
 631
 632     virtual bool ItemAdded( const wxDataViewItem & parent, const wxDataViewItem & item )
 633         { return m_mainWindow->ItemAdded( parent , item ); }
 634     virtual bool ItemDeleted( const wxDataViewItem &parent, const wxDataViewItem &item )
 635         { return m_mainWindow->ItemDeleted( parent, item ); }
 636     virtual bool ItemChanged( const wxDataViewItem & item )
 637         { return m_mainWindow->ItemChanged(item);  }
 638     virtual bool ValueChanged( const wxDataViewItem & item , unsigned int col )
 639         { return m_mainWindow->ValueChanged( item, col ); }
 640     virtual bool Cleared()
 641         { return m_mainWindow->Cleared(); }
 642     virtual void Resort()
 643         { m_mainWindow->Resort(); }
 644
 645     wxDataViewMainWindow    *m_mainWindow;
 646 };
 647
 648 // ---------------------------------------------------------
 649 // wxDataViewRenderer
 650 // ---------------------------------------------------------
 651
 652 IMPLEMENT_ABSTRACT_CLASS(wxDataViewRenderer, wxDataViewRendererBase)
 653
 654 wxDataViewRenderer::wxDataViewRenderer( const wxString &varianttype,
 655                                         wxDataViewCellMode mode,
 656                                         int align) :
 657     wxDataViewCustomRendererBase( varianttype, mode, align )
 658 {
 659     m_align = align;
 660     m_mode = mode;
 661     m_ellipsizeMode = wxELLIPSIZE_MIDDLE;
 662     m_dc = NULL;
 663 }
 664
 665 wxDataViewRenderer::~wxDataViewRenderer()
 666 {
 667     delete m_dc;
 668 }
 669
 670 wxDC *wxDataViewRenderer::GetDC()
 671 {
 672     if (m_dc == NULL)
 673     {
 674         if (GetOwner() == NULL)
 675             return NULL;
 676         if (GetOwner()->GetOwner() == NULL)
 677             return NULL;
 678         m_dc = new wxClientDC( GetOwner()->GetOwner() );
 679     }
 680
 681     return m_dc;
 682 }
 683
 684 void wxDataViewRenderer::SetAlignment( int align )
 685 {
 686     m_align=align;
 687 }
 688
 689 int wxDataViewRenderer::GetAlignment() const
 690 {
 691     return m_align;
 692 }
 693
 694 // ---------------------------------------------------------
 695 // wxDataViewCustomRenderer
 696 // ---------------------------------------------------------
 697
 698 IMPLEMENT_ABSTRACT_CLASS(wxDataViewCustomRenderer, wxDataViewRenderer)
 699
 700 wxDataViewCustomRenderer::wxDataViewCustomRenderer( const wxString &varianttype,
 701                         wxDataViewCellMode mode, int align ) :
 702     wxDataViewRenderer( varianttype, mode, align )
 703 {
 704 }
 705
 706 // ---------------------------------------------------------
 707 // wxDataViewTextRenderer
 708 // ---------------------------------------------------------
 709
 710 IMPLEMENT_CLASS(wxDataViewTextRenderer, wxDataViewRenderer)
 711
 712 wxDataViewTextRenderer::wxDataViewTextRenderer( const wxString &varianttype,
 713                                                 wxDataViewCellMode mode, int align ) :
 714     wxDataViewRenderer( varianttype, mode, align )
 715 {
 716 }
 717
 718 bool wxDataViewTextRenderer::SetValue( const wxVariant &value )
 719 {
 720     m_text = value.GetString();
 721
 722     return true;
 723 }
 724
 725 bool wxDataViewTextRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 726 {
 727     return false;
 728 }
 729
 730 bool wxDataViewTextRenderer::HasEditorCtrl() const
 731 {
 732     return true;
 733 }
 734
 735 wxControl* wxDataViewTextRenderer::CreateEditorCtrl( wxWindow *parent,
 736         wxRect labelRect, const wxVariant &value )
 737 {
 738     wxTextCtrl* ctrl = new wxTextCtrl( parent, wxID_ANY, value,
 739                                        wxPoint(labelRect.x,labelRect.y),
 740                                        wxSize(labelRect.width,labelRect.height) );
 741
 742     // select the text in the control an place the cursor at the end
 743     ctrl->SetInsertionPointEnd();
 744     ctrl->SelectAll();
 745
 746     return ctrl;
 747 }
 748
 749 bool wxDataViewTextRenderer::GetValueFromEditorCtrl( wxControl *editor, wxVariant &value )
 750 {
 751     wxTextCtrl *text = (wxTextCtrl*) editor;
 752     value = text->GetValue();
 753     return true;
 754 }
 755
 756 bool wxDataViewTextRenderer::Render(wxRect rect, wxDC *dc, int state)
 757 {
 758     RenderText(m_text, 0, rect, dc, state);
 759     return true;
 760 }
 761
 762 wxSize wxDataViewTextRenderer::GetSize() const
 763 {
 764     if (!m_text.empty())
 765         return GetTextExtent(m_text);
 766     else
 767         return wxSize(wxDVC_DEFAULT_RENDERER_SIZE,wxDVC_DEFAULT_RENDERER_SIZE);
 768 }
 769
 770 // ---------------------------------------------------------
 771 // wxDataViewBitmapRenderer
 772 // ---------------------------------------------------------
 773
 774 IMPLEMENT_CLASS(wxDataViewBitmapRenderer, wxDataViewRenderer)
 775
 776 wxDataViewBitmapRenderer::wxDataViewBitmapRenderer( const wxString &varianttype,
 777                                                     wxDataViewCellMode mode, int align ) :
 778     wxDataViewRenderer( varianttype, mode, align )
 779 {
 780 }
 781
 782 bool wxDataViewBitmapRenderer::SetValue( const wxVariant &value )
 783 {
 784     if (value.GetType() == wxT("wxBitmap"))
 785         m_bitmap << value;
 786     if (value.GetType() == wxT("wxIcon"))
 787         m_icon << value;
 788
 789     return true;
 790 }
 791
 792 bool wxDataViewBitmapRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 793 {
 794     return false;
 795 }
 796
 797 bool wxDataViewBitmapRenderer::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
 798 {
 799     if (m_bitmap.Ok())
 800         dc->DrawBitmap( m_bitmap, cell.x, cell.y );
 801     else if (m_icon.Ok())
 802         dc->DrawIcon( m_icon, cell.x, cell.y );
 803
 804     return true;
 805 }
 806
 807 wxSize wxDataViewBitmapRenderer::GetSize() const
 808 {
 809     if (m_bitmap.Ok())
 810         return wxSize( m_bitmap.GetWidth(), m_bitmap.GetHeight() );
 811     else if (m_icon.Ok())
 812         return wxSize( m_icon.GetWidth(), m_icon.GetHeight() );
 813
 814     return wxSize(wxDVC_DEFAULT_RENDERER_SIZE,wxDVC_DEFAULT_RENDERER_SIZE);
 815 }
 816
 817 // ---------------------------------------------------------
 818 // wxDataViewToggleRenderer
 819 // ---------------------------------------------------------
 820
 821 IMPLEMENT_ABSTRACT_CLASS(wxDataViewToggleRenderer, wxDataViewRenderer)
 822
 823 wxDataViewToggleRenderer::wxDataViewToggleRenderer( const wxString &varianttype,
 824                         wxDataViewCellMode mode, int align ) :
 825     wxDataViewRenderer( varianttype, mode, align )
 826 {
 827     m_toggle = false;
 828 }
 829
 830 bool wxDataViewToggleRenderer::SetValue( const wxVariant &value )
 831 {
 832     m_toggle = value.GetBool();
 833
 834     return true;
 835 }
 836
 837 bool wxDataViewToggleRenderer::GetValue( wxVariant &WXUNUSED(value) ) const
 838 {
 839     return false;
 840 }
 841
 842 bool wxDataViewToggleRenderer::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
 843 {
 844     int flags = 0;
 845     if (m_toggle)
 846         flags |= wxCONTROL_CHECKED;
 847     if (GetMode() != wxDATAVIEW_CELL_ACTIVATABLE ||
 848         GetEnabled() == false)
 849         flags |= wxCONTROL_DISABLED;
 850
 851     // check boxes we draw must always have the same, standard size (if it's
 852     // bigger than the cell size the checkbox will be truncated because the
 853     // caller had set the clipping rectangle to prevent us from drawing outside
 854     // the cell)
 855     cell.SetSize(GetSize());
 856
 857     wxRendererNative::Get().DrawCheckBox(
 858             GetOwner()->GetOwner(),
 859             *dc,
 860             cell,
 861             flags );
 862
 863     return true;
 864 }
 865
 866 bool wxDataViewToggleRenderer::WXOnLeftClick(const wxPoint& WXUNUSED(cursor),
 867                                              const wxRect& WXUNUSED(cell),
 868                                              wxDataViewModel *model,
 869                                              const wxDataViewItem& item,
 870                                              unsigned int col)
 871 {
 872     if (model->IsEnabled(item, col))
 873     {
 874         model->ChangeValue(!m_toggle, item, col);
 875         return true;
 876     }
 877
 878     return false;
 879 }
 880
 881 wxSize wxDataViewToggleRenderer::GetSize() const
 882 {
 883     // the window parameter is not used by GetCheckBoxSize() so it's
 884     // safe to pass NULL
 885     return wxRendererNative::Get().GetCheckBoxSize(NULL);
 886 }
 887
 888 // ---------------------------------------------------------
 889 // wxDataViewProgressRenderer
 890 // ---------------------------------------------------------
 891
 892 IMPLEMENT_ABSTRACT_CLASS(wxDataViewProgressRenderer, wxDataViewRenderer)
 893
 894 wxDataViewProgressRenderer::wxDataViewProgressRenderer( const wxString &label,
 895     const wxString &varianttype, wxDataViewCellMode mode, int align ) :
 896     wxDataViewRenderer( varianttype, mode, align )
 897 {
 898     m_label = label;
 899     m_value = 0;
 900 }
 901
 902 bool wxDataViewProgressRenderer::SetValue( const wxVariant &value )
 903 {
 904     m_value = (long) value;
 905
 906     if (m_value < 0) m_value = 0;
 907     if (m_value > 100) m_value = 100;
 908
 909     return true;
 910 }
 911
 912 bool wxDataViewProgressRenderer::GetValue( wxVariant &value ) const
 913 {
 914     value = (long) m_value;
 915     return true;
 916 }
 917
 918 bool
 919 wxDataViewProgressRenderer::Render(wxRect rect, wxDC *dc, int WXUNUSED(state))
 920 {
 921     // deflate the rect to leave a small border between bars in adjacent rows
 922     wxRect bar = rect.Deflate(0, 1);
 923
 924     dc->SetBrush( *wxTRANSPARENT_BRUSH );
 925     dc->SetPen( *wxBLACK_PEN );
 926     dc->DrawRectangle( bar );
 927
 928     bar.width = (int)(bar.width * m_value / 100.);
 929     dc->SetPen( *wxTRANSPARENT_PEN );
 930
 931     const wxDataViewItemAttr& attr = GetAttr();
 932     dc->SetBrush( attr.HasColour() ? wxBrush(attr.GetColour())
 933                                   : *wxBLUE_BRUSH );
 934     dc->DrawRectangle( bar );
 935
 936     return true;
 937 }
 938
 939 wxSize wxDataViewProgressRenderer::GetSize() const
 940 {
 941     return wxSize(40,12);
 942 }
 943
 944 // ---------------------------------------------------------
 945 // wxDataViewDateRenderer
 946 // ---------------------------------------------------------
 947
 948 #define wxUSE_DATE_RENDERER_POPUP (wxUSE_CALENDARCTRL && wxUSE_POPUPWIN)
 949
 950 #if wxUSE_DATE_RENDERER_POPUP
 951
 952 class wxDataViewDateRendererPopupTransient: public wxPopupTransientWindow
 953 {
 954 public:
 955     wxDataViewDateRendererPopupTransient( wxWindow* parent, wxDateTime *value,
 956         wxDataViewModel *model, const wxDataViewItem & item, unsigned int col) :
 957         wxPopupTransientWindow( parent, wxBORDER_SIMPLE ),
 958         m_item( item )
 959     {
 960         m_model = model;
 961         m_col = col;
 962         m_cal = new wxCalendarCtrl( this, wxID_ANY, *value );
 963         wxBoxSizer *sizer = new wxBoxSizer( wxHORIZONTAL );
 964         sizer->Add( m_cal, 1, wxGROW );
 965         SetSizer( sizer );
 966         sizer->Fit( this );
 967     }
 968
 969     void OnCalendar( wxCalendarEvent &event );
 970
 971     wxCalendarCtrl      *m_cal;
 972     wxDataViewModel *m_model;
 973     unsigned int               m_col;
 974     const wxDataViewItem &   m_item;
 975
 976 protected:
 977     virtual void OnDismiss()
 978     {
 979     }
 980
 981 private:
 982     DECLARE_EVENT_TABLE()
 983 };
 984
 985 BEGIN_EVENT_TABLE(wxDataViewDateRendererPopupTransient,wxPopupTransientWindow)
 986     EVT_CALENDAR( wxID_ANY, wxDataViewDateRendererPopupTransient::OnCalendar )
 987 END_EVENT_TABLE()
 988
 989 void wxDataViewDateRendererPopupTransient::OnCalendar( wxCalendarEvent &event )
 990 {
 991     m_model->ChangeValue( event.GetDate(), m_item, m_col );
 992     DismissAndNotify();
 993 }
 994
 995 #endif // wxUSE_DATE_RENDERER_POPUP
 996
 997 IMPLEMENT_ABSTRACT_CLASS(wxDataViewDateRenderer, wxDataViewRenderer)
 998
 999 wxDataViewDateRenderer::wxDataViewDateRenderer( const wxString &varianttype,
1000                         wxDataViewCellMode mode, int align ) :
1001     wxDataViewRenderer( varianttype, mode, align )
1002 {
1003 }
1004
1005 bool wxDataViewDateRenderer::SetValue( const wxVariant &value )
1006 {
1007     m_date = value.GetDateTime();
1008
1009     return true;
1010 }
1011
1012 bool wxDataViewDateRenderer::GetValue( wxVariant &value ) const
1013 {
1014     value = m_date;
1015     return true;
1016 }
1017
1018 bool wxDataViewDateRenderer::Render( wxRect cell, wxDC *dc, int state )
1019 {
1020     wxString tmp = m_date.FormatDate();
1021     RenderText( tmp, 0, cell, dc, state );
1022     return true;
1023 }
1024
1025 wxSize wxDataViewDateRenderer::GetSize() const
1026 {
1027     return GetTextExtent(m_date.FormatDate());
1028 }
1029
1030 bool wxDataViewDateRenderer::WXOnActivate(const wxRect& WXUNUSED(cell),
1031                                           wxDataViewModel *model,
1032                                           const wxDataViewItem& item,
1033                                           unsigned int col)
1034 {
1035     wxDateTime dtOld = m_date;
1036
1037 #if wxUSE_DATE_RENDERER_POPUP
1038     wxDataViewDateRendererPopupTransient *popup = new wxDataViewDateRendererPopupTransient(
1039         GetOwner()->GetOwner()->GetParent(), &dtOld, model, item, col);
1040     wxPoint pos = wxGetMousePosition();
1041     popup->Move( pos );
1042     popup->Layout();
1043     popup->Popup( popup->m_cal );
1044 #else // !wxUSE_DATE_RENDERER_POPUP
1045     wxMessageBox(dtOld.Format());
1046 #endif // wxUSE_DATE_RENDERER_POPUP/!wxUSE_DATE_RENDERER_POPUP
1047
1048     return true;
1049 }
1050
1051 // ---------------------------------------------------------
1052 // wxDataViewIconTextRenderer
1053 // ---------------------------------------------------------
1054
1055 IMPLEMENT_CLASS(wxDataViewIconTextRenderer, wxDataViewRenderer)
1056
1057 wxDataViewIconTextRenderer::wxDataViewIconTextRenderer(
1058 const wxString &varianttype, wxDataViewCellMode mode, int align ) :
1059     wxDataViewRenderer( varianttype, mode, align )
1060 {
1061     SetMode(mode);
1062     SetAlignment(align);
1063 }
1064
1065 bool wxDataViewIconTextRenderer::SetValue( const wxVariant &value )
1066 {
1067     m_value << value;
1068     return true;
1069 }
1070
1071 bool wxDataViewIconTextRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
1072 {
1073     return false;
1074 }
1075
1076 bool wxDataViewIconTextRenderer::Render(wxRect rect, wxDC *dc, int state)
1077 {
1078     int xoffset = 0;
1079
1080     const wxIcon& icon = m_value.GetIcon();
1081     if ( icon.IsOk() )
1082     {
1083         dc->DrawIcon(icon, rect.x, rect.y + (rect.height - icon.GetHeight())/2);
1084         xoffset = icon.GetWidth()+4;
1085     }
1086
1087     RenderText(m_value.GetText(), xoffset, rect, dc, state);
1088
1089     return true;
1090 }
1091
1092 wxSize wxDataViewIconTextRenderer::GetSize() const
1093 {
1094     if (!m_value.GetText().empty())
1095     {
1096         wxSize size = GetTextExtent(m_value.GetText());
1097
1098         if (m_value.GetIcon().IsOk())
1099             size.x += m_value.GetIcon().GetWidth() + 4;
1100         return size;
1101     }
1102     return wxSize(80,20);
1103 }
1104
1105 wxControl* wxDataViewIconTextRenderer::CreateEditorCtrl(wxWindow *parent, wxRect labelRect, const wxVariant& value)
1106 {
1107     wxDataViewIconText iconText;
1108     iconText << value;
1109
1110     wxString text = iconText.GetText();
1111
1112     // adjust the label rect to take the width of the icon into account
1113     if (iconText.GetIcon().IsOk())
1114     {
1115         int w = iconText.GetIcon().GetWidth() + 4;
1116         labelRect.x += w;
1117         labelRect.width -= w;
1118     }
1119
1120     wxTextCtrl* ctrl = new wxTextCtrl( parent, wxID_ANY, text,
1121                                        wxPoint(labelRect.x,labelRect.y),
1122                                        wxSize(labelRect.width,labelRect.height) );
1123
1124     // select the text in the control an place the cursor at the end
1125     ctrl->SetInsertionPointEnd();
1126     ctrl->SelectAll();
1127
1128     return ctrl;
1129 }
1130
1131 bool wxDataViewIconTextRenderer::GetValueFromEditorCtrl( wxControl *editor, wxVariant& value )
1132 {
1133     wxTextCtrl *text = (wxTextCtrl*) editor;
1134
1135     wxDataViewIconText iconText(text->GetValue(), m_value.GetIcon());
1136     value << iconText;
1137     return true;
1138 }
1139
1140 //-----------------------------------------------------------------------------
1141 // wxDataViewDropTarget
1142 //-----------------------------------------------------------------------------
1143
1144 #if wxUSE_DRAG_AND_DROP
1145
1146 class wxBitmapCanvas: public wxWindow
1147 {
1148 public:
1149     wxBitmapCanvas( wxWindow *parent, const wxBitmap &bitmap, const wxSize &size ) :
1150     wxWindow( parent, wxID_ANY, wxPoint(0,0), size )
1151     {
1152         m_bitmap = bitmap;
1153         Connect( wxEVT_PAINT, wxPaintEventHandler(wxBitmapCanvas::OnPaint) );
1154     }
1155
1156     void OnPaint( wxPaintEvent &WXUNUSED(event) )
1157     {
1158         wxPaintDC dc(this);
1159         dc.DrawBitmap( m_bitmap, 0, 0);
1160     }
1161
1162     wxBitmap m_bitmap;
1163 };
1164
1165 class wxDataViewDropSource: public wxDropSource
1166 {
1167 public:
1168     wxDataViewDropSource( wxDataViewMainWindow *win, unsigned int row ) :
1169         wxDropSource( win )
1170     {
1171         m_win = win;
1172         m_row = row;
1173         m_hint = NULL;
1174     }
1175
1176     ~wxDataViewDropSource()
1177     {
1178         delete m_hint;
1179     }
1180
1181     virtual bool GiveFeedback( wxDragResult WXUNUSED(effect) )
1182     {
1183         wxPoint pos = wxGetMousePosition();
1184
1185         if (!m_hint)
1186         {
1187             int liney = m_win->GetLineStart( m_row );
1188             int linex = 0;
1189             m_win->GetOwner()->CalcUnscrolledPosition( 0, liney, NULL, &liney );
1190             m_win->ClientToScreen( &linex, &liney );
1191             m_dist_x = pos.x - linex;
1192             m_dist_y = pos.y - liney;
1193
1194             int indent = 0;
1195             wxBitmap ib = m_win->CreateItemBitmap( m_row, indent );
1196             m_dist_x -= indent;
1197             m_hint = new wxFrame( m_win->GetParent(), wxID_ANY, wxEmptyString,
1198                                         wxPoint(pos.x - m_dist_x, pos.y + 5 ),
1199                                         ib.GetSize(),
1200                                         wxFRAME_TOOL_WINDOW |
1201                                         wxFRAME_FLOAT_ON_PARENT |
1202                                         wxFRAME_NO_TASKBAR |
1203                                         wxNO_BORDER );
1204             new wxBitmapCanvas( m_hint, ib, ib.GetSize() );
1205             m_hint->Show();
1206         }
1207         else
1208         {
1209             m_hint->Move( pos.x - m_dist_x, pos.y + 5  );
1210             m_hint->SetTransparent( 128 );
1211         }
1212
1213         return false;
1214     }
1215
1216     wxDataViewMainWindow   *m_win;
1217     unsigned int            m_row;
1218     wxFrame                *m_hint;
1219     int m_dist_x,m_dist_y;
1220 };
1221
1222
1223 class wxDataViewDropTarget: public wxDropTarget
1224 {
1225 public:
1226     wxDataViewDropTarget( wxDataObject *obj, wxDataViewMainWindow *win ) :
1227         wxDropTarget( obj )
1228     {
1229         m_win = win;
1230     }
1231
1232     virtual wxDragResult OnDragOver( wxCoord x, wxCoord y, wxDragResult def )
1233     {
1234         wxDataFormat format = GetMatchingPair();
1235         if (format == wxDF_INVALID)
1236             return wxDragNone;
1237         return m_win->OnDragOver( format, x, y, def);
1238     }
1239
1240     virtual bool OnDrop( wxCoord x, wxCoord y )
1241     {
1242         wxDataFormat format = GetMatchingPair();
1243         if (format == wxDF_INVALID)
1244             return false;
1245         return m_win->OnDrop( format, x, y );
1246     }
1247
1248     virtual wxDragResult OnData( wxCoord x, wxCoord y, wxDragResult def )
1249     {
1250         wxDataFormat format = GetMatchingPair();
1251         if (format == wxDF_INVALID)
1252             return wxDragNone;
1253         if (!GetData())
1254             return wxDragNone;
1255         return m_win->OnData( format, x, y, def );
1256     }
1257
1258     virtual void OnLeave()
1259         { m_win->OnLeave(); }
1260
1261     wxDataViewMainWindow   *m_win;
1262 };
1263
1264 #endif // wxUSE_DRAG_AND_DROP
1265
1266 //-----------------------------------------------------------------------------
1267 // wxDataViewRenameTimer
1268 //-----------------------------------------------------------------------------
1269
1270 wxDataViewRenameTimer::wxDataViewRenameTimer( wxDataViewMainWindow *owner )
1271 {
1272     m_owner = owner;
1273 }
1274
1275 void wxDataViewRenameTimer::Notify()
1276 {
1277     m_owner->OnRenameTimer();
1278 }
1279
1280 //-----------------------------------------------------------------------------
1281 // wxDataViewMainWindow
1282 //-----------------------------------------------------------------------------
1283
1284 // The tree building helper, declared firstly
1285 static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
1286                              wxDataViewTreeNode * node);
1287
1288 int LINKAGEMODE wxDataViewSelectionCmp( unsigned int row1, unsigned int row2 )
1289 {
1290     if (row1 > row2) return 1;
1291     if (row1 == row2) return 0;
1292     return -1;
1293 }
1294
1295 IMPLEMENT_ABSTRACT_CLASS(wxDataViewMainWindow, wxWindow)
1296
1297 BEGIN_EVENT_TABLE(wxDataViewMainWindow,wxWindow)
1298     EVT_PAINT         (wxDataViewMainWindow::OnPaint)
1299     EVT_MOUSE_EVENTS  (wxDataViewMainWindow::OnMouse)
1300     EVT_SET_FOCUS     (wxDataViewMainWindow::OnSetFocus)
1301     EVT_KILL_FOCUS    (wxDataViewMainWindow::OnKillFocus)
1302     EVT_CHAR          (wxDataViewMainWindow::OnChar)
1303 END_EVENT_TABLE()
1304
1305 wxDataViewMainWindow::wxDataViewMainWindow( wxDataViewCtrl *parent, wxWindowID id,
1306     const wxPoint &pos, const wxSize &size, const wxString &name ) :
1307     wxWindow( parent, id, pos, size, wxWANTS_CHARS|wxBORDER_NONE, name ),
1308     m_selection( wxDataViewSelectionCmp )
1309
1310 {
1311     SetOwner( parent );
1312
1313     m_lastOnSame = false;
1314     m_renameTimer = new wxDataViewRenameTimer( this );
1315
1316     // TODO: user better initial values/nothing selected
1317     m_currentCol = NULL;
1318     m_currentRow = 0;
1319
1320     m_lineHeight = wxMax( 17, GetCharHeight() + 2 ); // 17 = mini icon height + 1
1321
1322 #if wxUSE_DRAG_AND_DROP
1323     m_dragCount = 0;
1324     m_dragStart = wxPoint(0,0);
1325
1326     m_dragEnabled = false;
1327     m_dropEnabled = false;
1328     m_dropHint = false;
1329     m_dropHintLine = (unsigned int) -1;
1330 #endif // wxUSE_DRAG_AND_DROP
1331
1332     m_lineLastClicked = (unsigned int) -1;
1333     m_lineBeforeLastClicked = (unsigned int) -1;
1334     m_lineSelectSingleOnUp = (unsigned int) -1;
1335
1336     m_hasFocus = false;
1337
1338     SetBackgroundColour( *wxWHITE );
1339
1340     SetBackgroundStyle(wxBG_STYLE_CUSTOM);
1341
1342     m_penRule = wxPen(GetRuleColour());
1343
1344     // compose a pen whichcan draw black lines
1345     // TODO: maybe there is something system colour to use
1346     m_penExpander = wxPen(wxColour(0,0,0));
1347
1348     m_root = new wxDataViewTreeNode( NULL );
1349     m_root->SetHasChildren(true);
1350
1351     // Make m_count = -1 will cause the class recaculate the real displaying number of rows.
1352     m_count = -1;
1353     m_underMouse = NULL;
1354     UpdateDisplay();
1355 }
1356
1357 wxDataViewMainWindow::~wxDataViewMainWindow()
1358 {
1359     DestroyTree();
1360     delete m_renameTimer;
1361 }
1362
1363
1364 #if wxUSE_DRAG_AND_DROP
1365 bool wxDataViewMainWindow::EnableDragSource( const wxDataFormat &format )
1366 {
1367     m_dragFormat = format;
1368     m_dragEnabled = format != wxDF_INVALID;
1369
1370     return true;
1371 }
1372
1373 bool wxDataViewMainWindow::EnableDropTarget( const wxDataFormat &format )
1374 {
1375     m_dropFormat = format;
1376     m_dropEnabled = format != wxDF_INVALID;
1377
1378     if (m_dropEnabled)
1379         SetDropTarget( new wxDataViewDropTarget( new wxCustomDataObject( format ), this ) );
1380
1381     return true;
1382 }
1383
1384 void wxDataViewMainWindow::RemoveDropHint()
1385 {
1386     if (m_dropHint)
1387     {
1388             m_dropHint = false;
1389             RefreshRow( m_dropHintLine );
1390             m_dropHintLine = (unsigned int) -1;
1391     }
1392 }
1393
1394 wxDragResult wxDataViewMainWindow::OnDragOver( wxDataFormat format, wxCoord x,
1395                                                wxCoord y, wxDragResult def )
1396 {
1397     int xx = x;
1398     int yy = y;
1399     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1400     unsigned int row = GetLineAt( yy );
1401
1402     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1403     {
1404         RemoveDropHint();
1405         return wxDragNone;
1406     }
1407
1408     wxDataViewItem item = GetItemByRow( row );
1409
1410     wxDataViewModel *model = GetOwner()->GetModel();
1411
1412     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, m_owner->GetId() );
1413     event.SetEventObject( m_owner );
1414     event.SetItem( item );
1415     event.SetModel( model );
1416     event.SetDataFormat( format );
1417     if (!m_owner->HandleWindowEvent( event ))
1418     {
1419         RemoveDropHint();
1420         return wxDragNone;
1421     }
1422
1423     if (!event.IsAllowed())
1424     {
1425         RemoveDropHint();
1426         return wxDragNone;
1427     }
1428
1429
1430     if (m_dropHint && (row != m_dropHintLine))
1431         RefreshRow( m_dropHintLine );
1432     m_dropHint = true;
1433     m_dropHintLine = row;
1434     RefreshRow( row );
1435
1436     return def;
1437 }
1438
1439 bool wxDataViewMainWindow::OnDrop( wxDataFormat format, wxCoord x, wxCoord y )
1440 {
1441     RemoveDropHint();
1442
1443     int xx = x;
1444     int yy = y;
1445     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1446     unsigned int row = GetLineAt( yy );
1447
1448     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1449         return false;
1450
1451     wxDataViewItem item = GetItemByRow( row );
1452
1453     wxDataViewModel *model = GetOwner()->GetModel();
1454
1455     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, m_owner->GetId() );
1456     event.SetEventObject( m_owner );
1457     event.SetItem( item );
1458     event.SetModel( model );
1459     event.SetDataFormat( format );
1460     if (!m_owner->HandleWindowEvent( event ))
1461         return false;
1462
1463     if (!event.IsAllowed())
1464         return false;
1465
1466     return true;
1467 }
1468
1469 wxDragResult wxDataViewMainWindow::OnData( wxDataFormat format, wxCoord x, wxCoord y,
1470                                            wxDragResult def )
1471 {
1472     int xx = x;
1473     int yy = y;
1474     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1475     unsigned int row = GetLineAt( yy );
1476
1477     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1478         return wxDragNone;
1479
1480     wxDataViewItem item = GetItemByRow( row );
1481
1482     wxDataViewModel *model = GetOwner()->GetModel();
1483
1484     wxCustomDataObject *obj = (wxCustomDataObject *) GetDropTarget()->GetDataObject();
1485
1486     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP, m_owner->GetId() );
1487     event.SetEventObject( m_owner );
1488     event.SetItem( item );
1489     event.SetModel( model );
1490     event.SetDataFormat( format );
1491     event.SetDataSize( obj->GetSize() );
1492     event.SetDataBuffer( obj->GetData() );
1493     if (!m_owner->HandleWindowEvent( event ))
1494         return wxDragNone;
1495
1496     if (!event.IsAllowed())
1497         return wxDragNone;
1498
1499     return def;
1500 }
1501
1502 void wxDataViewMainWindow::OnLeave()
1503 {
1504     RemoveDropHint();
1505 }
1506
1507 wxBitmap wxDataViewMainWindow::CreateItemBitmap( unsigned int row, int &indent )
1508 {
1509     int height = GetLineHeight( row );
1510     int width = 0;
1511     unsigned int cols = GetOwner()->GetColumnCount();
1512     unsigned int col;
1513     for (col = 0; col < cols; col++)
1514     {
1515         wxDataViewColumn *column = GetOwner()->GetColumnAt(col);
1516         if (column->IsHidden())
1517             continue;      // skip it!
1518         width += column->GetWidth();
1519     }
1520
1521     indent = 0;
1522     if (!IsList())
1523     {
1524         wxDataViewTreeNode *node = GetTreeNodeByRow(row);
1525         indent = GetOwner()->GetIndent() * node->GetIndentLevel();
1526         indent = indent + m_lineHeight;
1527             // try to use the m_lineHeight as the expander space
1528
1529         if(!node->HasChildren())
1530             delete node;
1531     }
1532     width -= indent;
1533
1534     wxBitmap bitmap( width, height );
1535     wxMemoryDC dc( bitmap );
1536     dc.SetFont( GetFont() );
1537     dc.SetPen( *wxBLACK_PEN );
1538     dc.SetBrush( *wxWHITE_BRUSH );
1539     dc.DrawRectangle( 0,0,width,height );
1540
1541     wxDataViewModel *model = m_owner->GetModel();
1542
1543     wxDataViewColumn *expander = GetOwner()->GetExpanderColumn();
1544     if (!expander)
1545     {
1546         // TODO-RTL: last column for RTL support
1547         expander = GetOwner()->GetColumnAt( 0 );
1548         GetOwner()->SetExpanderColumn(expander);
1549     }
1550
1551
1552     int x = 0;
1553     for (col = 0; col < cols; col++)
1554     {
1555         wxDataViewColumn *column = GetOwner()->GetColumnAt( col );
1556         wxDataViewRenderer *cell = column->GetRenderer();
1557
1558         if (column->IsHidden())
1559             continue;       // skip it!
1560
1561         width = column->GetWidth();
1562
1563         if (column == expander)
1564             width -= indent;
1565
1566         wxDataViewItem item = GetItemByRow( row );
1567         cell->PrepareForItem(model, item, column->GetModelColumn());
1568
1569         wxRect item_rect(x, 0, width, height);
1570         item_rect.Deflate(PADDING_RIGHTLEFT, 0);
1571
1572         // dc.SetClippingRegion( item_rect );
1573         cell->WXCallRender(item_rect, &dc, 0);
1574         // dc.DestroyClippingRegion();
1575
1576         x += width;
1577     }
1578
1579     return bitmap;
1580 }
1581
1582 #endif // wxUSE_DRAG_AND_DROP
1583
1584
1585 void wxDataViewMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
1586 {
1587     wxDataViewModel *model = GetOwner()->GetModel();
1588     wxAutoBufferedPaintDC dc( this );
1589
1590 #ifdef __WXMSW__
1591     dc.SetBrush(GetOwner()->GetBackgroundColour());
1592     dc.SetPen( *wxTRANSPARENT_PEN );
1593     dc.DrawRectangle(GetClientSize());
1594 #endif
1595
1596     // prepare the DC
1597     GetOwner()->PrepareDC( dc );
1598     dc.SetFont( GetFont() );
1599
1600     wxRect update = GetUpdateRegion().GetBox();
1601     m_owner->CalcUnscrolledPosition( update.x, update.y, &update.x, &update.y );
1602
1603     // compute which items needs to be redrawn
1604     unsigned int item_start = GetLineAt( wxMax(0,update.y) );
1605     unsigned int item_count =
1606         wxMin( (int)(  GetLineAt( wxMax(0,update.y+update.height) ) - item_start + 1),
1607             (int)(GetRowCount( ) - item_start));
1608     unsigned int item_last = item_start + item_count;
1609     // Get the parent of DataViewCtrl
1610     wxWindow *parent = GetParent()->GetParent();
1611     wxDataViewEvent cache_event(wxEVT_COMMAND_DATAVIEW_CACHE_HINT, parent->GetId());
1612     cache_event.SetEventObject(GetParent());
1613     cache_event.SetCache(item_start, item_last - 1);
1614     parent->ProcessWindowEvent(cache_event);
1615
1616     // compute which columns needs to be redrawn
1617     unsigned int cols = GetOwner()->GetColumnCount();
1618     if ( !cols )
1619     {
1620         // we assume that we have at least one column below and painting an
1621         // empty control is unnecessary anyhow
1622         return;
1623     }
1624
1625     unsigned int col_start = 0;
1626     unsigned int x_start;
1627     for (x_start = 0; col_start < cols; col_start++)
1628     {
1629         wxDataViewColumn *col = GetOwner()->GetColumnAt(col_start);
1630         if (col->IsHidden())
1631             continue;      // skip it!
1632
1633         unsigned int w = col->GetWidth();
1634         if (x_start+w >= (unsigned int)update.x)
1635             break;
1636
1637         x_start += w;
1638     }
1639
1640     unsigned int col_last = col_start;
1641     unsigned int x_last = x_start;
1642     for (; col_last < cols; col_last++)
1643     {
1644         wxDataViewColumn *col = GetOwner()->GetColumnAt(col_last);
1645         if (col->IsHidden())
1646             continue;      // skip it!
1647
1648         if (x_last > (unsigned int)update.GetRight())
1649             break;
1650
1651         x_last += col->GetWidth();
1652     }
1653
1654     // Draw horizontal rules if required
1655     if ( m_owner->HasFlag(wxDV_HORIZ_RULES) )
1656     {
1657         dc.SetPen(m_penRule);
1658         dc.SetBrush(*wxTRANSPARENT_BRUSH);
1659
1660         for (unsigned int i = item_start; i <= item_last; i++)
1661         {
1662             int y = GetLineStart( i );
1663             dc.DrawLine(x_start, y, x_last, y);
1664         }
1665     }
1666
1667     // Draw vertical rules if required
1668     if ( m_owner->HasFlag(wxDV_VERT_RULES) )
1669     {
1670         dc.SetPen(m_penRule);
1671         dc.SetBrush(*wxTRANSPARENT_BRUSH);
1672
1673         // NB: Vertical rules are drawn in the last pixel of a column so that
1674         //     they align perfectly with native MSW wxHeaderCtrl as well as for
1675         //     consistency with MSW native list control. There's no vertical
1676         //     rule at the most-left side of the control.
1677
1678         int x = x_start - 1;
1679         for (unsigned int i = col_start; i < col_last; i++)
1680         {
1681             wxDataViewColumn *col = GetOwner()->GetColumnAt(i);
1682             if (col->IsHidden())
1683                 continue;       // skip it
1684
1685             x += col->GetWidth();
1686
1687             dc.DrawLine(x, GetLineStart( item_start ),
1688                         x, GetLineStart( item_last ) );
1689         }
1690     }
1691
1692     // redraw the background for the items which are selected/current
1693     for (unsigned int item = item_start; item < item_last; item++)
1694     {
1695         bool selected = m_selection.Index( item ) != wxNOT_FOUND;
1696         if (selected || item == m_currentRow)
1697         {
1698             int flags = selected ? (int)wxCONTROL_SELECTED : 0;
1699             if (item == m_currentRow)
1700                 flags |= wxCONTROL_CURRENT;
1701             if (m_hasFocus)
1702                 flags |= wxCONTROL_FOCUSED;
1703
1704             wxRect rect( x_start, GetLineStart( item ),
1705                          x_last - x_start, GetLineHeight( item ) );
1706             wxRendererNative::Get().DrawItemSelectionRect
1707                                 (
1708                                     this,
1709                                     dc,
1710                                     rect,
1711                                     flags
1712                                 );
1713         }
1714     }
1715
1716 #if wxUSE_DRAG_AND_DROP
1717     if (m_dropHint)
1718     {
1719         wxRect rect( x_start, GetLineStart( m_dropHintLine ),
1720                      x_last - x_start, GetLineHeight( m_dropHintLine ) );
1721         dc.SetPen( *wxBLACK_PEN );
1722         dc.SetBrush( *wxTRANSPARENT_BRUSH );
1723         dc.DrawRectangle( rect );
1724     }
1725 #endif // wxUSE_DRAG_AND_DROP
1726
1727     wxDataViewColumn *expander = GetOwner()->GetExpanderColumn();
1728     if (!expander)
1729     {
1730         // TODO-RTL: last column for RTL support
1731         expander = GetOwner()->GetColumnAt( 0 );
1732         GetOwner()->SetExpanderColumn(expander);
1733     }
1734
1735     // redraw all cells for all rows which must be repainted and all columns
1736     wxRect cell_rect;
1737     cell_rect.x = x_start;
1738     for (unsigned int i = col_start; i < col_last; i++)
1739     {
1740         wxDataViewColumn *col = GetOwner()->GetColumnAt( i );
1741         wxDataViewRenderer *cell = col->GetRenderer();
1742         cell_rect.width = col->GetWidth();
1743
1744         if ( col->IsHidden() || cell_rect.width <= 0 )
1745             continue;       // skip it!
1746
1747         for (unsigned int item = item_start; item < item_last; item++)
1748         {
1749             // get the cell value and set it into the renderer
1750             wxDataViewTreeNode *node = NULL;
1751             wxDataViewItem dataitem;
1752
1753             if (!IsVirtualList())
1754             {
1755                 node = GetTreeNodeByRow(item);
1756                 if( node == NULL )
1757                     continue;
1758
1759                 dataitem = node->GetItem();
1760
1761                 if ((i > 0) && model->IsContainer(dataitem) &&
1762                     !model->HasContainerColumns(dataitem))
1763                     continue;
1764             }
1765             else
1766             {
1767                 dataitem = wxDataViewItem( wxUIntToPtr(item+1) );
1768             }
1769
1770             cell->PrepareForItem(model, dataitem, col->GetModelColumn());
1771
1772             // update cell_rect
1773             cell_rect.y = GetLineStart( item );
1774             cell_rect.height = GetLineHeight( item );
1775
1776             // deal with the expander
1777             int indent = 0;
1778             if ((!IsList()) && (col == expander))
1779             {
1780                 // Calculate the indent first
1781                 indent = GetOwner()->GetIndent() * node->GetIndentLevel();
1782
1783                 // we reserve m_lineHeight of horizontal space for the expander
1784                 // but leave EXPANDER_MARGIN around the expander itself
1785                 int exp_x = cell_rect.x + indent + EXPANDER_MARGIN;
1786
1787                 indent += m_lineHeight;
1788
1789                 // draw expander if needed and visible
1790                 if ( node->HasChildren() && exp_x < cell_rect.GetRight() )
1791                 {
1792                     dc.SetPen( m_penExpander );
1793                     dc.SetBrush( wxNullBrush );
1794
1795                     int exp_size = m_lineHeight - 2*EXPANDER_MARGIN;
1796                     int exp_y = cell_rect.y + (cell_rect.height - exp_size)/2
1797                                    + EXPANDER_MARGIN - EXPANDER_OFFSET;
1798
1799                     const wxRect rect(exp_x, exp_y, exp_size, exp_size);
1800
1801                     int flag = 0;
1802                     if ( m_underMouse == node )
1803                         flag |= wxCONTROL_CURRENT;
1804                     if ( node->IsOpen() )
1805                         flag |= wxCONTROL_EXPANDED;
1806
1807                     // ensure that we don't overflow the cell (which might
1808                     // happen if the column is very narrow)
1809                     wxDCClipper clip(dc, cell_rect);
1810
1811                     wxRendererNative::Get().DrawTreeItemButton( this, dc, rect, flag);
1812                 }
1813
1814                 // force the expander column to left-center align
1815                 cell->SetAlignment( wxALIGN_CENTER_VERTICAL );
1816             }
1817             if (node && !node->HasChildren())
1818             {
1819                 // Yes, if the node does not have any child, it must be a leaf which
1820                 // mean that it is a temporarily created by GetTreeNodeByRow
1821                 wxDELETE(node);
1822             }
1823
1824             wxRect item_rect = cell_rect;
1825             item_rect.Deflate(PADDING_RIGHTLEFT, 0);
1826
1827             // account for the tree indent (harmless if we're not indented)
1828             item_rect.x += indent;
1829             item_rect.width -= indent;
1830
1831             if ( item_rect.width <= 0 )
1832                 continue;
1833
1834             int state = 0;
1835             if (m_hasFocus && (m_selection.Index(item) != wxNOT_FOUND))
1836                 state |= wxDATAVIEW_CELL_SELECTED;
1837
1838             // TODO: it would be much more efficient to create a clipping
1839             //       region for the entire column being rendered (in the OnPaint
1840             //       of wxDataViewMainWindow) instead of a single clip region for
1841             //       each cell. However it would mean that each renderer should
1842             //       respect the given wxRect's top & bottom coords, eventually
1843             //       violating only the left & right coords - however the user can
1844             //       make its own renderer and thus we cannot be sure of that.
1845             wxDCClipper clip(dc, item_rect);
1846
1847             cell->WXCallRender(item_rect, &dc, state);
1848         }
1849
1850         cell_rect.x += cell_rect.width;
1851     }
1852 }
1853
1854 void wxDataViewMainWindow::OnRenameTimer()
1855 {
1856     // We have to call this here because changes may just have
1857     // been made and no screen update taken place.
1858     if ( m_dirty )
1859     {
1860         // TODO: use wxTheApp->SafeYieldFor(NULL, wxEVT_CATEGORY_UI) instead
1861         //       (needs to be tested!)
1862         wxSafeYield();
1863     }
1864
1865     wxDataViewItem item = GetItemByRow( m_currentRow );
1866
1867     wxRect labelRect = GetItemRect(item, m_currentCol);
1868
1869     m_currentCol->GetRenderer()->StartEditing( item, labelRect );
1870 }
1871
1872 //-----------------------------------------------------------------------------
1873 // Helper class for do operation on the tree node
1874 //-----------------------------------------------------------------------------
1875 class DoJob
1876 {
1877 public:
1878     DoJob() { }
1879     virtual ~DoJob() { }
1880
1881     // The return value control how the tree-walker tranverse the tree
1882     // 0: Job done, stop tranverse and return
1883     // 1: Ignore the current node's subtree and continue
1884     // 2: Job not done, continue
1885     enum  { OK = 0 , IGR = 1, CONT = 2 };
1886     virtual int operator() ( wxDataViewTreeNode * node ) = 0;
1887     virtual int operator() ( void * n ) = 0;
1888 };
1889
1890 bool Walker( wxDataViewTreeNode * node, DoJob & func )
1891 {
1892     if( node==NULL )
1893         return false;
1894
1895     switch( func( node ) )
1896     {
1897         case DoJob::OK :
1898             return true;
1899         case DoJob::IGR:
1900             return false;
1901         case DoJob::CONT:
1902         default:
1903             ;
1904     }
1905
1906     const wxDataViewTreeNodes& nodes = node->GetNodes();
1907     const wxDataViewTreeLeaves& leaves = node->GetChildren();
1908
1909     int len_nodes = nodes.GetCount();
1910     int len = leaves.GetCount();
1911     int i = 0, nodes_i = 0;
1912
1913     for(; i < len; i ++ )
1914     {
1915         void * n = leaves[i];
1916         if( nodes_i < len_nodes && n == nodes[nodes_i]->GetItem().GetID() )
1917         {
1918             wxDataViewTreeNode * nd = nodes[nodes_i];
1919             nodes_i++;
1920
1921             if( Walker( nd , func ) )
1922                 return true;
1923
1924         }
1925         else
1926             switch( func( n ) )
1927             {
1928                 case DoJob::OK :
1929                     return true;
1930                 case DoJob::IGR:
1931                     continue;
1932                 case DoJob::CONT:
1933                 default:
1934                 ;
1935             }
1936     }
1937     return false;
1938 }
1939
1940 bool wxDataViewMainWindow::ItemAdded(const wxDataViewItem & parent, const wxDataViewItem & item)
1941 {
1942     GetOwner()->InvalidateColBestWidths();
1943
1944     if (IsVirtualList())
1945     {
1946         wxDataViewVirtualListModel *list_model =
1947             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
1948         m_count = list_model->GetCount();
1949         UpdateDisplay();
1950         return true;
1951     }
1952
1953     SortPrepare();
1954
1955     wxDataViewTreeNode * node;
1956     node = FindNode(parent);
1957
1958     if( node == NULL )
1959         return false;
1960
1961     node->SetHasChildren( true );
1962
1963     if( g_model->IsContainer( item ) )
1964     {
1965         wxDataViewTreeNode * newnode = new wxDataViewTreeNode( node );
1966         newnode->SetItem(item);
1967         newnode->SetHasChildren( true );
1968         node->AddNode( newnode);
1969     }
1970     else
1971         node->AddLeaf( item.GetID() );
1972
1973     node->ChangeSubTreeCount(1);
1974
1975     m_count = -1;
1976     UpdateDisplay();
1977
1978     return true;
1979 }
1980
1981 static void DestroyTreeHelper( wxDataViewTreeNode * node);
1982
1983 bool wxDataViewMainWindow::ItemDeleted(const wxDataViewItem& parent,
1984                                        const wxDataViewItem& item)
1985 {
1986     GetOwner()->InvalidateColBestWidths();
1987
1988     if (IsVirtualList())
1989     {
1990         wxDataViewVirtualListModel *list_model =
1991             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
1992         m_count = list_model->GetCount();
1993
1994         if( m_currentRow > GetRowCount() )
1995             m_currentRow = m_count - 1;
1996
1997         // TODO: why empty the entire selection?
1998         m_selection.Empty();
1999
2000         UpdateDisplay();
2001
2002         return true;
2003     }
2004
2005     wxDataViewTreeNode * node = FindNode(parent);
2006
2007     // Notice that it is possible that the item being deleted is not in the
2008     // tree at all, for example we could be deleting a never shown (because
2009     // collapsed) item in a tree model. So it's not an error if we don't know
2010     // about this item, just return without doing anything then.
2011     if ( !node || node->GetChildren().Index(item.GetID()) == wxNOT_FOUND )
2012         return false;
2013
2014     int sub = -1;
2015     node->GetChildren().Remove( item.GetID() );
2016     // Manipolate selection
2017     if( m_selection.GetCount() > 1 )
2018     {
2019         m_selection.Empty();
2020     }
2021     bool isContainer = false;
2022     wxDataViewTreeNodes nds = node->GetNodes();
2023     for (size_t i = 0; i < nds.GetCount(); i ++)
2024     {
2025         if (nds[i]->GetItem() == item)
2026         {
2027             isContainer = true;
2028             break;
2029         }
2030     }
2031     if( isContainer )
2032     {
2033         wxDataViewTreeNode * n = NULL;
2034         wxDataViewTreeNodes nodes = node->GetNodes();
2035         int len = nodes.GetCount();
2036         for( int i = 0; i < len; i ++)
2037         {
2038             if( nodes[i]->GetItem() == item )
2039             {
2040                 n = nodes[i];
2041                 break;
2042             }
2043         }
2044
2045         wxCHECK_MSG( n != NULL, false, "item not found" );
2046
2047         node->GetNodes().Remove( n );
2048         sub -= n->GetSubTreeCount();
2049         ::DestroyTreeHelper(n);
2050     }
2051     // Make the row number invalid and get a new valid one when user call GetRowCount
2052     m_count = -1;
2053     node->ChangeSubTreeCount(sub);
2054
2055     // Change the current row to the last row if the current exceed the max row number
2056     if( m_currentRow > GetRowCount() )
2057         m_currentRow = m_count - 1;
2058
2059     UpdateDisplay();
2060
2061     return true;
2062 }
2063
2064 bool wxDataViewMainWindow::ItemChanged(const wxDataViewItem & item)
2065 {
2066     GetOwner()->InvalidateColBestWidths();
2067
2068     SortPrepare();
2069     g_model->Resort();
2070
2071     // Send event
2072     wxWindow *parent = GetParent();
2073     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
2074     le.SetEventObject(parent);
2075     le.SetModel(GetOwner()->GetModel());
2076     le.SetItem(item);
2077     parent->GetEventHandler()->ProcessEvent(le);
2078
2079     return true;
2080 }
2081
2082 bool wxDataViewMainWindow::ValueChanged( const wxDataViewItem & item, unsigned int model_column )
2083 {
2084     int view_column = -1;
2085     unsigned int n_col = m_owner->GetColumnCount();
2086     for (unsigned i = 0; i < n_col; i++)
2087     {
2088         wxDataViewColumn *column = m_owner->GetColumn( i );
2089         if (column->GetModelColumn() == model_column)
2090         {
2091             view_column = (int) i;
2092             break;
2093         }
2094     }
2095     if (view_column == -1)
2096         return false;
2097
2098     GetOwner()->InvalidateColBestWidth(view_column);
2099
2100     // NOTE: to be valid, we cannot use e.g. INT_MAX - 1
2101 /*#define MAX_VIRTUAL_WIDTH       100000
2102
2103     wxRect rect( 0, row*m_lineHeight, MAX_VIRTUAL_WIDTH, m_lineHeight );
2104     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2105     Refresh( true, &rect );
2106
2107     return true;
2108 */
2109     SortPrepare();
2110     g_model->Resort();
2111
2112     // Send event
2113     wxWindow *parent = GetParent();
2114     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
2115     le.SetEventObject(parent);
2116     le.SetModel(GetOwner()->GetModel());
2117     le.SetItem(item);
2118     le.SetColumn(view_column);
2119     le.SetDataViewColumn(GetOwner()->GetColumn(view_column));
2120     parent->GetEventHandler()->ProcessEvent(le);
2121
2122     return true;
2123 }
2124
2125 bool wxDataViewMainWindow::Cleared()
2126 {
2127     GetOwner()->InvalidateColBestWidths();
2128
2129     DestroyTree();
2130     m_selection.Clear();
2131
2132     SortPrepare();
2133     BuildTree( GetOwner()->GetModel() );
2134
2135     UpdateDisplay();
2136
2137     return true;
2138 }
2139
2140 void wxDataViewMainWindow::UpdateDisplay()
2141 {
2142     m_dirty = true;
2143     m_underMouse = NULL;
2144 }
2145
2146 void wxDataViewMainWindow::OnInternalIdle()
2147 {
2148     wxWindow::OnInternalIdle();
2149
2150     if (m_dirty)
2151     {
2152         RecalculateDisplay();
2153         m_dirty = false;
2154     }
2155 }
2156
2157 void wxDataViewMainWindow::RecalculateDisplay()
2158 {
2159     wxDataViewModel *model = GetOwner()->GetModel();
2160     if (!model)
2161     {
2162         Refresh();
2163         return;
2164     }
2165
2166     int width = GetEndOfLastCol();
2167     int height = GetLineStart( GetRowCount() );
2168
2169     SetVirtualSize( width, height );
2170     GetOwner()->SetScrollRate( 10, m_lineHeight );
2171
2172     Refresh();
2173 }
2174
2175 void wxDataViewMainWindow::ScrollWindow( int dx, int dy, const wxRect *rect )
2176 {
2177     m_underMouse = NULL;
2178
2179     wxWindow::ScrollWindow( dx, dy, rect );
2180
2181     if (GetOwner()->m_headerArea)
2182         GetOwner()->m_headerArea->ScrollWindow( dx, 0 );
2183 }
2184
2185 void wxDataViewMainWindow::ScrollTo( int rows, int column )
2186 {
2187     m_underMouse = NULL;
2188
2189     int x, y;
2190     m_owner->GetScrollPixelsPerUnit( &x, &y );
2191     int sy = GetLineStart( rows )/y;
2192     int sx = 0;
2193     if( column != -1 )
2194     {
2195         wxRect rect = GetClientRect();
2196         int colnum = 0;
2197         int x_start, w = 0;
2198         int xx, yy, xe;
2199         m_owner->CalcUnscrolledPosition( rect.x, rect.y, &xx, &yy );
2200         for (x_start = 0; colnum < column; colnum++)
2201         {
2202             wxDataViewColumn *col = GetOwner()->GetColumnAt(colnum);
2203             if (col->IsHidden())
2204                 continue;      // skip it!
2205
2206             w = col->GetWidth();
2207             x_start += w;
2208         }
2209
2210         int x_end = x_start + w;
2211         xe = xx + rect.width;
2212         if( x_end > xe )
2213         {
2214             sx = ( xx + x_end - xe )/x;
2215         }
2216         if( x_start < xx )
2217         {
2218             sx = x_start/x;
2219         }
2220     }
2221     m_owner->Scroll( sx, sy );
2222 }
2223
2224 int wxDataViewMainWindow::GetCountPerPage() const
2225 {
2226     wxSize size = GetClientSize();
2227     return size.y / m_lineHeight;
2228 }
2229
2230 int wxDataViewMainWindow::GetEndOfLastCol() const
2231 {
2232     int width = 0;
2233     unsigned int i;
2234     for (i = 0; i < GetOwner()->GetColumnCount(); i++)
2235     {
2236         const wxDataViewColumn *c =
2237             const_cast<wxDataViewCtrl*>(GetOwner())->GetColumnAt( i );
2238
2239         if (!c->IsHidden())
2240             width += c->GetWidth();
2241     }
2242     return width;
2243 }
2244
2245 unsigned int wxDataViewMainWindow::GetFirstVisibleRow() const
2246 {
2247     int x = 0;
2248     int y = 0;
2249     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
2250
2251     return GetLineAt( y );
2252 }
2253
2254 unsigned int wxDataViewMainWindow::GetLastVisibleRow()
2255 {
2256     wxSize client_size = GetClientSize();
2257     m_owner->CalcUnscrolledPosition( client_size.x, client_size.y,
2258                                     &client_size.x, &client_size.y );
2259
2260     // we should deal with the pixel here
2261     unsigned int row = GetLineAt(client_size.y) - 1;
2262
2263     return wxMin( GetRowCount()-1, row );
2264 }
2265
2266 unsigned int wxDataViewMainWindow::GetRowCount()
2267 {
2268     if ( m_count == -1 )
2269     {
2270         m_count = RecalculateCount();
2271         UpdateDisplay();
2272     }
2273     return m_count;
2274 }
2275
2276 void wxDataViewMainWindow::ChangeCurrentRow( unsigned int row )
2277 {
2278     m_currentRow = row;
2279
2280     // send event
2281 }
2282
2283 void wxDataViewMainWindow::SelectAllRows( bool on )
2284 {
2285     if (IsEmpty())
2286         return;
2287
2288     if (on)
2289     {
2290         m_selection.Clear();
2291         for (unsigned int i = 0; i < GetRowCount(); i++)
2292             m_selection.Add( i );
2293         Refresh();
2294     }
2295     else
2296     {
2297         unsigned int first_visible = GetFirstVisibleRow();
2298         unsigned int last_visible = GetLastVisibleRow();
2299         unsigned int i;
2300         for (i = 0; i < m_selection.GetCount(); i++)
2301         {
2302             unsigned int row = m_selection[i];
2303             if ((row >= first_visible) && (row <= last_visible))
2304                 RefreshRow( row );
2305         }
2306         m_selection.Clear();
2307     }
2308 }
2309
2310 void wxDataViewMainWindow::SelectRow( unsigned int row, bool on )
2311 {
2312     if (m_selection.Index( row ) == wxNOT_FOUND)
2313     {
2314         if (on)
2315         {
2316             m_selection.Add( row );
2317             RefreshRow( row );
2318         }
2319     }
2320     else
2321     {
2322         if (!on)
2323         {
2324             m_selection.Remove( row );
2325             RefreshRow( row );
2326         }
2327     }
2328 }
2329
2330 void wxDataViewMainWindow::SelectRows( unsigned int from, unsigned int to, bool on )
2331 {
2332     if (from > to)
2333     {
2334         unsigned int tmp = from;
2335         from = to;
2336         to = tmp;
2337     }
2338
2339     unsigned int i;
2340     for (i = from; i <= to; i++)
2341     {
2342         if (m_selection.Index( i ) == wxNOT_FOUND)
2343         {
2344             if (on)
2345                 m_selection.Add( i );
2346         }
2347         else
2348         {
2349             if (!on)
2350                 m_selection.Remove( i );
2351         }
2352     }
2353     RefreshRows( from, to );
2354 }
2355
2356 void wxDataViewMainWindow::Select( const wxArrayInt& aSelections )
2357 {
2358     for (size_t i=0; i < aSelections.GetCount(); i++)
2359     {
2360         int n = aSelections[i];
2361
2362         m_selection.Add( n );
2363         RefreshRow( n );
2364     }
2365 }
2366
2367 void wxDataViewMainWindow::ReverseRowSelection( unsigned int row )
2368 {
2369     if (m_selection.Index( row ) == wxNOT_FOUND)
2370         m_selection.Add( row );
2371     else
2372         m_selection.Remove( row );
2373     RefreshRow( row );
2374 }
2375
2376 bool wxDataViewMainWindow::IsRowSelected( unsigned int row )
2377 {
2378     return (m_selection.Index( row ) != wxNOT_FOUND);
2379 }
2380
2381 void wxDataViewMainWindow::SendSelectionChangedEvent( const wxDataViewItem& item)
2382 {
2383     wxWindow *parent = GetParent();
2384     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED, parent->GetId());
2385
2386     le.SetEventObject(parent);
2387     le.SetModel(GetOwner()->GetModel());
2388     le.SetItem( item );
2389
2390     parent->GetEventHandler()->ProcessEvent(le);
2391 }
2392
2393 void wxDataViewMainWindow::RefreshRow( unsigned int row )
2394 {
2395     wxRect rect( 0, GetLineStart( row ), GetEndOfLastCol(), GetLineHeight( row ) );
2396     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2397
2398     wxSize client_size = GetClientSize();
2399     wxRect client_rect( 0, 0, client_size.x, client_size.y );
2400     wxRect intersect_rect = client_rect.Intersect( rect );
2401     if (intersect_rect.width > 0)
2402         Refresh( true, &intersect_rect );
2403 }
2404
2405 void wxDataViewMainWindow::RefreshRows( unsigned int from, unsigned int to )
2406 {
2407     if (from > to)
2408     {
2409         unsigned int tmp = to;
2410         to = from;
2411         from = tmp;
2412     }
2413
2414     wxRect rect( 0, GetLineStart( from ), GetEndOfLastCol(), GetLineStart( (to-from+1) ) );
2415     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2416
2417     wxSize client_size = GetClientSize();
2418     wxRect client_rect( 0, 0, client_size.x, client_size.y );
2419     wxRect intersect_rect = client_rect.Intersect( rect );
2420     if (intersect_rect.width > 0)
2421         Refresh( true, &intersect_rect );
2422 }
2423
2424 void wxDataViewMainWindow::RefreshRowsAfter( unsigned int firstRow )
2425 {
2426     wxSize client_size = GetClientSize();
2427     int start = GetLineStart( firstRow );
2428     m_owner->CalcScrolledPosition( start, 0, &start, NULL );
2429     if (start > client_size.y) return;
2430
2431     wxRect rect( 0, start, client_size.x, client_size.y - start );
2432
2433     Refresh( true, &rect );
2434 }
2435
2436 void wxDataViewMainWindow::OnArrowChar(unsigned int newCurrent, const wxKeyEvent& event)
2437 {
2438     wxCHECK_RET( newCurrent < GetRowCount(),
2439                 wxT("invalid item index in OnArrowChar()") );
2440
2441     // if there is no selection, we cannot move it anywhere
2442     if (!HasCurrentRow())
2443         return;
2444
2445     unsigned int oldCurrent = m_currentRow;
2446
2447     // in single selection we just ignore Shift as we can't select several
2448     // items anyhow
2449     if ( event.ShiftDown() && !IsSingleSel() )
2450     {
2451         RefreshRow( oldCurrent );
2452
2453         ChangeCurrentRow( newCurrent );
2454
2455         // select all the items between the old and the new one
2456         if ( oldCurrent > newCurrent )
2457         {
2458             newCurrent = oldCurrent;
2459             oldCurrent = m_currentRow;
2460         }
2461
2462         SelectRows( oldCurrent, newCurrent, true );
2463         if (oldCurrent!=newCurrent)
2464             SendSelectionChangedEvent(GetItemByRow(m_selection[0]));
2465     }
2466     else // !shift
2467     {
2468         RefreshRow( oldCurrent );
2469
2470         // all previously selected items are unselected unless ctrl is held
2471         if ( !event.ControlDown() )
2472             SelectAllRows(false);
2473
2474         ChangeCurrentRow( newCurrent );
2475
2476         if ( !event.ControlDown() )
2477         {
2478             SelectRow( m_currentRow, true );
2479             SendSelectionChangedEvent(GetItemByRow(m_currentRow));
2480         }
2481         else
2482             RefreshRow( m_currentRow );
2483     }
2484
2485     GetOwner()->EnsureVisible( m_currentRow, -1 );
2486 }
2487
2488 wxRect wxDataViewMainWindow::GetLineRect( unsigned int row ) const
2489 {
2490     wxRect rect;
2491     rect.x = 0;
2492     rect.y = GetLineStart( row );
2493     rect.width = GetEndOfLastCol();
2494     rect.height = GetLineHeight( row );
2495
2496     return rect;
2497 }
2498
2499 int wxDataViewMainWindow::GetLineStart( unsigned int row ) const
2500 {
2501     const wxDataViewModel *model = GetOwner()->GetModel();
2502
2503     if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
2504     {
2505         // TODO make more efficient
2506
2507         int start = 0;
2508
2509         unsigned int r;
2510         for (r = 0; r < row; r++)
2511         {
2512             const wxDataViewTreeNode* node = GetTreeNodeByRow(r);
2513             if (!node) return start;
2514
2515             wxDataViewItem item = node->GetItem();
2516
2517             if (node && !node->HasChildren())
2518             {
2519                 // Yes, if the node does not have any child, it must be a leaf which
2520                 // mean that it is a temporarily created by GetTreeNodeByRow
2521                 wxDELETE(node);
2522             }
2523
2524             unsigned int cols = GetOwner()->GetColumnCount();
2525             unsigned int col;
2526             int height = m_lineHeight;
2527             for (col = 0; col < cols; col++)
2528             {
2529                 const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2530                 if (column->IsHidden())
2531                     continue;      // skip it!
2532
2533                 if ((col != 0) &&
2534                     model->IsContainer(item) &&
2535                     !model->HasContainerColumns(item))
2536                     continue;      // skip it!
2537
2538                 wxDataViewRenderer *renderer =
2539                     const_cast<wxDataViewRenderer*>(column->GetRenderer());
2540                 renderer->PrepareForItem(model, item, column->GetModelColumn());
2541
2542                 height = wxMax( height, renderer->GetSize().y );
2543             }
2544
2545             start += height;
2546         }
2547
2548         return start;
2549     }
2550     else
2551     {
2552         return row * m_lineHeight;
2553     }
2554 }
2555
2556 int wxDataViewMainWindow::GetLineAt( unsigned int y ) const
2557 {
2558     const wxDataViewModel *model = GetOwner()->GetModel();
2559
2560     // check for the easy case first
2561     if ( !GetOwner()->HasFlag(wxDV_VARIABLE_LINE_HEIGHT) )
2562         return y / m_lineHeight;
2563
2564     // TODO make more efficient
2565     unsigned int row = 0;
2566     unsigned int yy = 0;
2567     for (;;)
2568     {
2569         const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
2570         if (!node)
2571         {
2572             // not really correct...
2573             return row + ((y-yy) / m_lineHeight);
2574         }
2575
2576         wxDataViewItem item = node->GetItem();
2577
2578         if (node && !node->HasChildren())
2579         {
2580             // Yes, if the node does not have any child, it must be a leaf which
2581             // mean that it is a temporarily created by GetTreeNodeByRow
2582             wxDELETE(node);
2583         }
2584
2585         unsigned int cols = GetOwner()->GetColumnCount();
2586         unsigned int col;
2587         int height = m_lineHeight;
2588         for (col = 0; col < cols; col++)
2589         {
2590             const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2591             if (column->IsHidden())
2592                 continue;      // skip it!
2593
2594             if ((col != 0) &&
2595                 model->IsContainer(item) &&
2596                 !model->HasContainerColumns(item))
2597                 continue;      // skip it!
2598
2599             wxDataViewRenderer *renderer =
2600                 const_cast<wxDataViewRenderer*>(column->GetRenderer());
2601             renderer->PrepareForItem(model, item, column->GetModelColumn());
2602
2603             height = wxMax( height, renderer->GetSize().y );
2604         }
2605
2606         yy += height;
2607         if (y < yy)
2608             return row;
2609
2610         row++;
2611     }
2612 }
2613
2614 int wxDataViewMainWindow::GetLineHeight( unsigned int row ) const
2615 {
2616     const wxDataViewModel *model = GetOwner()->GetModel();
2617
2618     if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
2619     {
2620         wxASSERT( !IsVirtualList() );
2621
2622         const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
2623         // wxASSERT( node );
2624         if (!node) return m_lineHeight;
2625
2626         wxDataViewItem item = node->GetItem();
2627
2628         if (node && !node->HasChildren())
2629         {
2630                 // Yes, if the node does not have any child, it must be a leaf which
2631                 // mean that it is a temporarily created by GetTreeNodeByRow
2632             wxDELETE(node);
2633         }
2634
2635         int height = m_lineHeight;
2636
2637         unsigned int cols = GetOwner()->GetColumnCount();
2638         unsigned int col;
2639         for (col = 0; col < cols; col++)
2640         {
2641             const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2642             if (column->IsHidden())
2643                 continue;      // skip it!
2644
2645             if ((col != 0) &&
2646                 model->IsContainer(item) &&
2647                 !model->HasContainerColumns(item))
2648                 continue;      // skip it!
2649
2650             wxDataViewRenderer *renderer =
2651                 const_cast<wxDataViewRenderer*>(column->GetRenderer());
2652             renderer->PrepareForItem(model, item, column->GetModelColumn());
2653
2654             height = wxMax( height, renderer->GetSize().y );
2655         }
2656
2657         return height;
2658     }
2659     else
2660     {
2661         return m_lineHeight;
2662     }
2663 }
2664
2665 class RowToItemJob: public DoJob
2666 {
2667 public:
2668     RowToItemJob( unsigned int row , int current )
2669         { this->row = row; this->current = current; }
2670     virtual ~RowToItemJob() {}
2671
2672     virtual int operator() ( wxDataViewTreeNode * node )
2673     {
2674         current ++;
2675         if( current == static_cast<int>(row))
2676         {
2677             ret = node->GetItem();
2678             return DoJob::OK;
2679         }
2680
2681         if( node->GetSubTreeCount() + current < static_cast<int>(row) )
2682         {
2683             current += node->GetSubTreeCount();
2684             return  DoJob::IGR;
2685         }
2686         else
2687         {
2688             // If the current has no child node, we can find the desired item of the row
2689             // number directly.
2690             // This if can speed up finding in some case, and will has a very good effect
2691             // when it comes to list view
2692             if( node->GetNodes().GetCount() == 0)
2693             {
2694                 int index = static_cast<int>(row) - current - 1;
2695                 ret = node->GetChildren().Item( index );
2696                 return DoJob::OK;
2697             }
2698             return DoJob::CONT;
2699         }
2700     }
2701
2702     virtual int operator() ( void * n )
2703     {
2704         current ++;
2705         if( current == static_cast<int>(row))
2706         {
2707             ret = wxDataViewItem( n );
2708             return DoJob::OK;
2709         }
2710         return DoJob::CONT;
2711     }
2712
2713     wxDataViewItem GetResult() const
2714         { return ret; }
2715
2716 private:
2717     unsigned int row;
2718     int current;
2719     wxDataViewItem ret;
2720 };
2721
2722 wxDataViewItem wxDataViewMainWindow::GetItemByRow(unsigned int row) const
2723 {
2724     if (IsVirtualList())
2725     {
2726         return wxDataViewItem( wxUIntToPtr(row+1) );
2727     }
2728     else
2729     {
2730         RowToItemJob job( row, -2 );
2731         Walker( m_root , job );
2732         return job.GetResult();
2733     }
2734 }
2735
2736 class RowToTreeNodeJob: public DoJob
2737 {
2738 public:
2739     RowToTreeNodeJob( unsigned int row , int current, wxDataViewTreeNode * node )
2740     {
2741         this->row = row;
2742         this->current = current;
2743         ret = NULL;
2744         parent = node;
2745     }
2746     virtual ~RowToTreeNodeJob(){ }
2747
2748     virtual int operator() ( wxDataViewTreeNode * node )
2749     {
2750         current ++;
2751         if( current == static_cast<int>(row))
2752         {
2753             ret = node;
2754             return DoJob::OK;
2755         }
2756
2757         if( node->GetSubTreeCount() + current < static_cast<int>(row) )
2758         {
2759             current += node->GetSubTreeCount();
2760             return  DoJob::IGR;
2761         }
2762         else
2763         {
2764             parent = node;
2765
2766             // If the current node has no children, we can find the desired item of the
2767             // row number directly.
2768             // This if can speed up finding in some case, and will have a very good
2769             // effect for list views.
2770             if( node->GetNodes().GetCount() == 0)
2771             {
2772                 int index = static_cast<int>(row) - current - 1;
2773                 void * n = node->GetChildren().Item( index );
2774                 ret = new wxDataViewTreeNode( parent );
2775                 ret->SetItem( wxDataViewItem( n ));
2776                 ret->SetHasChildren(false);
2777                 return DoJob::OK;
2778             }
2779             return DoJob::CONT;
2780         }
2781     }
2782
2783     virtual int operator() ( void * n )
2784     {
2785         current ++;
2786         if( current == static_cast<int>(row))
2787         {
2788             ret = new wxDataViewTreeNode( parent );
2789             ret->SetItem( wxDataViewItem( n ));
2790             ret->SetHasChildren(false);
2791             return DoJob::OK;
2792         }
2793
2794         return DoJob::CONT;
2795     }
2796
2797     wxDataViewTreeNode * GetResult() const
2798         { return ret; }
2799
2800 private:
2801     unsigned int row;
2802     int current;
2803     wxDataViewTreeNode * ret;
2804     wxDataViewTreeNode * parent;
2805 };
2806
2807 wxDataViewTreeNode * wxDataViewMainWindow::GetTreeNodeByRow(unsigned int row) const
2808 {
2809     wxASSERT( !IsVirtualList() );
2810
2811     RowToTreeNodeJob job( row , -2, m_root );
2812     Walker( m_root , job );
2813     return job.GetResult();
2814 }
2815
2816 wxDataViewEvent wxDataViewMainWindow::SendExpanderEvent( wxEventType type,
2817                                                          const wxDataViewItem & item )
2818 {
2819     wxWindow *parent = GetParent();
2820     wxDataViewEvent le(type, parent->GetId());
2821
2822     le.SetEventObject(parent);
2823     le.SetModel(GetOwner()->GetModel());
2824     le.SetItem( item );
2825
2826     parent->GetEventHandler()->ProcessEvent(le);
2827     return le;
2828 }
2829
2830 bool wxDataViewMainWindow::IsExpanded( unsigned int row ) const
2831 {
2832     if (IsList())
2833         return false;
2834
2835     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2836     if (!node)
2837         return false;
2838
2839     if (!node->HasChildren())
2840     {
2841         delete node;
2842         return false;
2843     }
2844
2845     return node->IsOpen();
2846 }
2847
2848 bool wxDataViewMainWindow::HasChildren( unsigned int row ) const
2849 {
2850     if (IsList())
2851         return false;
2852
2853     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2854     if (!node)
2855         return false;
2856
2857     if (!node->HasChildren())
2858     {
2859         delete node;
2860         return false;
2861     }
2862
2863     return true;
2864 }
2865
2866 void wxDataViewMainWindow::Expand( unsigned int row )
2867 {
2868     if (IsList())
2869         return;
2870
2871     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2872     if (!node)
2873         return;
2874
2875     if (!node->HasChildren())
2876     {
2877         delete node;
2878         return;
2879     }
2880
2881             if (!node->IsOpen())
2882             {
2883                 wxDataViewEvent e =
2884                     SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, node->GetItem());
2885
2886                 // Check if the user prevent expanding
2887                 if( e.GetSkipped() )
2888                     return;
2889
2890                 node->ToggleOpen();
2891
2892                 // build the children of current node
2893                 if( node->GetChildrenNumber() == 0 )
2894                 {
2895                     SortPrepare();
2896                     ::BuildTreeHelper(GetOwner()->GetModel(), node->GetItem(), node);
2897                 }
2898
2899                 // By expanding the node all row indices that are currently in the selection list
2900                 // and are greater than our node have become invalid. So we have to correct that now.
2901                 const unsigned rowAdjustment = node->GetSubTreeCount();
2902                 for(unsigned i=0; i<m_selection.size(); ++i)
2903                 {
2904                     const unsigned testRow = m_selection[i];
2905                     // all rows above us are not affected, so skip them
2906                     if(testRow <= row)
2907                         continue;
2908
2909                     m_selection[i] += rowAdjustment;
2910                 }
2911
2912                 if(m_currentRow > row)
2913                     ChangeCurrentRow(m_currentRow + rowAdjustment);
2914
2915                 m_count = -1;
2916                 UpdateDisplay();
2917                 // Send the expanded event
2918                 SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED,node->GetItem());
2919             }
2920 }
2921
2922 void wxDataViewMainWindow::Collapse(unsigned int row)
2923 {
2924     if (IsList())
2925         return;
2926
2927     wxDataViewTreeNode *node = GetTreeNodeByRow(row);
2928     if (!node)
2929         return;
2930
2931     if (!node->HasChildren())
2932     {
2933         delete node;
2934         return;
2935     }
2936
2937         if (node->IsOpen())
2938         {
2939             wxDataViewEvent e =
2940                 SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING,node->GetItem());
2941             if( e.GetSkipped() )
2942                 return;
2943
2944             // Find out if there are selected items below the current node.
2945             bool selectCollapsingRow = false;
2946             const unsigned rowAdjustment = node->GetSubTreeCount();
2947             unsigned maxRowToBeTested = row + rowAdjustment;
2948             for(unsigned i=0; i<m_selection.size(); ++i)
2949             {
2950                 const unsigned testRow = m_selection[i];
2951                 if(testRow > row && testRow <= maxRowToBeTested)
2952                 {
2953                     selectCollapsingRow = true;
2954                     // get out as soon as we have found a node that is selected
2955                     break;
2956                 }
2957             }
2958
2959             node->ToggleOpen();
2960
2961             // If the node to be closed has selected items the user won't see those any longer.
2962             // We select the collapsing node in this case.
2963             if(selectCollapsingRow)
2964             {
2965                 SelectAllRows(false);
2966                 ChangeCurrentRow(row);
2967                 SelectRow(row, true);
2968                 SendSelectionChangedEvent(GetItemByRow(row));
2969             }
2970             else
2971             {
2972                 // if there were no selected items below our node we still need to "fix" the
2973                 // selection list to adjust for the changing of the row indices.
2974                 // We actually do the opposite of what we are doing in Expand().
2975                 for(unsigned i=0; i<m_selection.size(); ++i)
2976                 {
2977                     const unsigned testRow = m_selection[i];
2978                     // all rows above us are not affected, so skip them
2979                     if(testRow <= row)
2980                         continue;
2981
2982                     m_selection[i] -= rowAdjustment;
2983                 }
2984
2985                 // if the "current row" is being collapsed away we change it to the current row ;-)
2986                 if(m_currentRow > row && m_currentRow <= maxRowToBeTested)
2987                     ChangeCurrentRow(row);
2988                 else if(m_currentRow > row)
2989                     ChangeCurrentRow(m_currentRow - rowAdjustment);
2990             }
2991
2992             m_count = -1;
2993             UpdateDisplay();
2994             SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED,node->GetItem());
2995         }
2996 }
2997
2998 wxDataViewTreeNode * wxDataViewMainWindow::FindNode( const wxDataViewItem & item )
2999 {
3000     const wxDataViewModel * model = GetOwner()->GetModel();
3001     if( model == NULL )
3002         return NULL;
3003
3004     if (!item.IsOk())
3005         return m_root;
3006
3007     // Compose the parent-chain for the item we are looking for
3008     wxVector<wxDataViewItem> parentChain;
3009     wxDataViewItem it( item );
3010     while( it.IsOk() )
3011     {
3012         parentChain.push_back(it);
3013         it = model->GetParent(it);
3014     }
3015
3016     // Find the item along the parent-chain.
3017     // This algorithm is designed to speed up the node-finding method
3018     wxDataViewTreeNode* node = m_root;
3019     for( unsigned iter = parentChain.size()-1; iter>=0; --iter )
3020     {
3021         if( node->HasChildren() )
3022         {
3023             if( node->GetChildrenNumber() == 0 )
3024             {
3025                 SortPrepare();
3026                 ::BuildTreeHelper(model, node->GetItem(), node);
3027             }
3028
3029             const wxDataViewTreeNodes& nodes = node->GetNodes();
3030             bool found = false;
3031
3032             for (unsigned i = 0; i < nodes.GetCount(); ++i)
3033             {
3034                 wxDataViewTreeNode* currentNode = nodes[i];
3035                 if (currentNode->GetItem() == parentChain[iter])
3036                 {
3037                     if (currentNode->GetItem() == item)
3038                         return currentNode;
3039
3040                     node = currentNode;
3041                     found = true;
3042                     break;
3043                 }
3044             }
3045             if (!found)
3046                 return NULL;
3047         }
3048         else
3049             return NULL;
3050     }
3051     return NULL;
3052 }
3053
3054 void wxDataViewMainWindow::HitTest( const wxPoint & point, wxDataViewItem & item,
3055                                     wxDataViewColumn* &column )
3056 {
3057     wxDataViewColumn *col = NULL;
3058     unsigned int cols = GetOwner()->GetColumnCount();
3059     unsigned int colnum = 0;
3060     int x, y;
3061     m_owner->CalcUnscrolledPosition( point.x, point.y, &x, &y );
3062     for (unsigned x_start = 0; colnum < cols; colnum++)
3063     {
3064         col = GetOwner()->GetColumnAt(colnum);
3065         if (col->IsHidden())
3066             continue;      // skip it!
3067
3068         unsigned int w = col->GetWidth();
3069         if (x_start+w >= (unsigned int)x)
3070             break;
3071
3072         x_start += w;
3073     }
3074
3075     column = col;
3076     item = GetItemByRow( GetLineAt( y ) );
3077 }
3078
3079 wxRect wxDataViewMainWindow::GetItemRect( const wxDataViewItem & item,
3080                                           const wxDataViewColumn* column )
3081 {
3082     int xpos = 0;
3083     int width = 0;
3084
3085     unsigned int cols = GetOwner()->GetColumnCount();
3086     // If column is null the loop will compute the combined width of all columns.
3087     // Otherwise, it will compute the x position of the column we are looking for.
3088     for (unsigned int i = 0; i < cols; i++)
3089     {
3090         wxDataViewColumn* col = GetOwner()->GetColumnAt( i );
3091
3092         if (col == column)
3093             break;
3094
3095         if (col->IsHidden())
3096             continue;      // skip it!
3097
3098         xpos += col->GetWidth();
3099         width += col->GetWidth();
3100     }
3101
3102     if(column != 0)
3103     {
3104         // If we have a column, we need can get its width directly.
3105         if(column->IsHidden())
3106             width = 0;
3107         else
3108             width = column->GetWidth();
3109
3110     }
3111     else
3112     {
3113         // If we have no column, we reset the x position back to zero.
3114         xpos = 0;
3115     }
3116
3117     // we have to take an expander column into account and compute its indentation
3118     // to get the correct x position where the actual text is
3119     int indent = 0;
3120     int row = GetRowByItem(item);
3121     if (!IsList() && (column == 0 || GetOwner()->GetExpanderColumn() == column) )
3122     {
3123         wxDataViewTreeNode* node = GetTreeNodeByRow(row);
3124         indent = GetOwner()->GetIndent() * node->GetIndentLevel();
3125         indent = indent + m_lineHeight; // use m_lineHeight as the width of the expander
3126
3127         if(!node->HasChildren())
3128             delete node;
3129     }
3130
3131     wxRect itemRect( xpos + indent,
3132                      GetLineStart( row ),
3133                      width - indent,
3134                      GetLineHeight( row ) );
3135
3136     GetOwner()->CalcScrolledPosition(  itemRect.x,  itemRect.y,
3137                                       &itemRect.x, &itemRect.y );
3138
3139     return itemRect;
3140 }
3141
3142 int wxDataViewMainWindow::RecalculateCount()
3143 {
3144     if (IsVirtualList())
3145     {
3146         wxDataViewVirtualListModel *list_model =
3147             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
3148
3149         return list_model->GetCount();
3150     }
3151     else
3152     {
3153         return m_root->GetSubTreeCount();
3154     }
3155 }
3156
3157 class ItemToRowJob : public DoJob
3158 {
3159 public:
3160     ItemToRowJob(const wxDataViewItem& item_, wxVector<wxDataViewItem>::reverse_iterator iter)
3161         : m_iter(iter),
3162         item(item_)
3163     {
3164         ret = -1;
3165     }
3166
3167     // Maybe binary search will help to speed up this process
3168     virtual int operator() ( wxDataViewTreeNode * node)
3169     {
3170         ret ++;
3171         if( node->GetItem() == item )
3172         {
3173             return DoJob::OK;
3174         }
3175
3176         if( node->GetItem() == *m_iter )
3177         {
3178             m_iter++;
3179             return DoJob::CONT;
3180         }
3181         else
3182         {
3183             ret += node->GetSubTreeCount();
3184             return DoJob::IGR;
3185         }
3186
3187     }
3188
3189     virtual int operator() ( void * n )
3190     {
3191         ret ++;
3192         if( n == item.GetID() )
3193             return DoJob::OK;
3194         return DoJob::CONT;
3195     }
3196
3197     // the row number is begin from zero
3198     int GetResult() const
3199         { return ret -1; }
3200
3201 private:
3202     wxVector<wxDataViewItem>::reverse_iterator m_iter;
3203     wxDataViewItem item;
3204     int ret;
3205
3206 };
3207
3208 int wxDataViewMainWindow::GetRowByItem(const wxDataViewItem & item) const
3209 {
3210     const wxDataViewModel * model = GetOwner()->GetModel();
3211     if( model == NULL )
3212         return -1;
3213
3214     if (IsVirtualList())
3215     {
3216         return wxPtrToUInt( item.GetID() ) -1;
3217     }
3218     else
3219     {
3220         if( !item.IsOk() )
3221             return -1;
3222
3223         // Compose the parent-chain of the item we are looking for
3224         wxVector<wxDataViewItem> parentChain;
3225         wxDataViewItem it( item );
3226         while( it.IsOk() )
3227         {
3228             parentChain.push_back(it);
3229             it = model->GetParent(it);
3230         }
3231
3232         // add an 'invalid' item to represent our 'invisible' root node
3233         parentChain.push_back(wxDataViewItem());
3234
3235         // the parent chain was created by adding the deepest parent first.
3236         // so if we want to start at the root node, we have to iterate backwards through the vector
3237         ItemToRowJob job( item, parentChain.rbegin() );
3238         Walker( m_root, job );
3239         return job.GetResult();
3240     }
3241 }
3242
3243 static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
3244                              wxDataViewTreeNode * node)
3245 {
3246     if( !model->IsContainer( item ) )
3247         return;
3248
3249     wxDataViewItemArray children;
3250     unsigned int num = model->GetChildren( item, children);
3251
3252     unsigned int index = 0;
3253     while( index < num )
3254     {
3255         if( model->IsContainer( children[index] ) )
3256         {
3257             wxDataViewTreeNode * n = new wxDataViewTreeNode( node );
3258             n->SetItem(children[index]);
3259             n->SetHasChildren( true );
3260             node->AddNode( n );
3261         }
3262         else
3263         {
3264             node->AddLeaf( children[index].GetID() );
3265         }
3266         index ++;
3267     }
3268     node->SetSubTreeCount( num );
3269     wxDataViewTreeNode * n = node->GetParent();
3270     if( n != NULL)
3271         n->ChangeSubTreeCount(num);
3272
3273 }
3274
3275 void wxDataViewMainWindow::BuildTree(wxDataViewModel * model)
3276 {
3277     DestroyTree();
3278
3279     if (GetOwner()->GetModel()->IsVirtualListModel())
3280     {
3281         m_count = -1;
3282         return;
3283     }
3284
3285     m_root = new wxDataViewTreeNode( NULL );
3286     m_root->SetHasChildren(true);
3287
3288     // First we define a invalid item to fetch the top-level elements
3289     wxDataViewItem item;
3290     SortPrepare();
3291     BuildTreeHelper( model, item, m_root);
3292     m_count = -1;
3293 }
3294
3295 static void DestroyTreeHelper( wxDataViewTreeNode * node )
3296 {
3297     if( node->GetNodeNumber() != 0 )
3298     {
3299         int len = node->GetNodeNumber();
3300         wxDataViewTreeNodes& nodes = node->GetNodes();
3301         for (int i = 0; i < len; i++)
3302             DestroyTreeHelper(nodes[i]);
3303     }
3304     delete node;
3305 }
3306
3307 void wxDataViewMainWindow::DestroyTree()
3308 {
3309     if (!IsVirtualList())
3310     {
3311         ::DestroyTreeHelper(m_root);
3312             m_count = 0;
3313             m_root = NULL;
3314     }
3315 }
3316
3317 void wxDataViewMainWindow::OnChar( wxKeyEvent &event )
3318 {
3319     wxWindow * const parent = GetParent();
3320
3321     // propagate the char event upwards
3322     wxKeyEvent eventForParent(event);
3323     eventForParent.SetEventObject(parent);
3324     if ( parent->ProcessWindowEvent(eventForParent) )
3325         return;
3326
3327     if ( parent->HandleAsNavigationKey(event) )
3328         return;
3329
3330     // no item -> nothing to do
3331     if (!HasCurrentRow())
3332     {
3333         event.Skip();
3334         return;
3335     }
3336
3337     // don't use m_linesPerPage directly as it might not be computed yet
3338     const int pageSize = GetCountPerPage();
3339     wxCHECK_RET( pageSize, wxT("should have non zero page size") );
3340
3341     switch ( event.GetKeyCode() )
3342     {
3343         case WXK_RETURN:
3344             {
3345                 wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED,
3346                                    parent->GetId());
3347                 le.SetItem( GetItemByRow(m_currentRow) );
3348                 le.SetEventObject(parent);
3349                 le.SetModel(GetOwner()->GetModel());
3350
3351                 parent->GetEventHandler()->ProcessEvent(le);
3352             }
3353             break;
3354
3355         case WXK_UP:
3356             if ( m_currentRow > 0 )
3357                 OnArrowChar( m_currentRow - 1, event );
3358             break;
3359
3360         case WXK_DOWN:
3361             if ( m_currentRow < GetRowCount() - 1 )
3362                 OnArrowChar( m_currentRow + 1, event );
3363             break;
3364         // Add the process for tree expanding/collapsing
3365         case WXK_LEFT:
3366         {
3367             if (IsList())
3368                break;
3369
3370             wxDataViewTreeNode* node = GetTreeNodeByRow(m_currentRow);
3371             if (!node)
3372                 break;
3373
3374             if (node->HasChildren() && node->IsOpen())
3375             {
3376                 Collapse(m_currentRow);
3377             }
3378             else    // if the node is already closed we move the selection to its parent
3379             {
3380                 wxDataViewTreeNode *parent_node = node->GetParent();
3381
3382                 if(!node->HasChildren())
3383                     delete node;
3384
3385                 if (parent_node)
3386                 {
3387                     int parent = GetRowByItem( parent_node->GetItem() );
3388                     if ( parent >= 0 )
3389                     {
3390                         unsigned int row = m_currentRow;
3391                         SelectRow( row, false);
3392                         SelectRow( parent, true );
3393                         ChangeCurrentRow( parent );
3394                         GetOwner()->EnsureVisible( parent, -1 );
3395                         SendSelectionChangedEvent( parent_node->GetItem() );
3396                     }
3397                 }
3398             }
3399             break;
3400         }
3401         case WXK_RIGHT:
3402         {
3403             if (!IsExpanded( m_currentRow ))
3404                 Expand( m_currentRow );
3405             else
3406             {
3407                 unsigned int row = m_currentRow;
3408                 SelectRow( row, false );
3409                 SelectRow( row + 1, true );
3410                 ChangeCurrentRow( row + 1 );
3411                 GetOwner()->EnsureVisible( row + 1, -1 );
3412                 SendSelectionChangedEvent( GetItemByRow(row+1) );
3413             }
3414             break;
3415         }
3416         case WXK_END:
3417         {
3418             if (!IsEmpty())
3419                 OnArrowChar( GetRowCount() - 1, event );
3420             break;
3421         }
3422         case WXK_HOME:
3423             if (!IsEmpty())
3424                 OnArrowChar( 0, event );
3425             break;
3426
3427         case WXK_PAGEUP:
3428             {
3429                 int steps = pageSize - 1;
3430                 int index = m_currentRow - steps;
3431                 if (index < 0)
3432                     index = 0;
3433
3434                 OnArrowChar( index, event );
3435             }
3436             break;
3437
3438         case WXK_PAGEDOWN:
3439             {
3440                 int steps = pageSize - 1;
3441                 unsigned int index = m_currentRow + steps;
3442                 unsigned int count = GetRowCount();
3443                 if ( index >= count )
3444                     index = count - 1;
3445
3446                 OnArrowChar( index, event );
3447             }
3448             break;
3449
3450         case WXK_F2:
3451             {
3452                 if(m_selection.size() == 1)
3453                 {
3454                     // TODO: we need to revise that when we have a concept for a 'current column'
3455                     GetOwner()->StartEditor(GetItemByRow(m_selection[0]), 0);
3456                 }
3457             }
3458             break;
3459
3460         default:
3461             event.Skip();
3462     }
3463 }
3464
3465 void wxDataViewMainWindow::OnMouse( wxMouseEvent &event )
3466 {
3467     if (event.GetEventType() == wxEVT_MOUSEWHEEL)
3468     {
3469         // let the base handle mouse wheel events.
3470         event.Skip();
3471         return;
3472     }
3473
3474     // set the focus to ourself if any of the mouse buttons are pressed
3475     if(event.ButtonDown() && !HasFocus())
3476         SetFocus();
3477
3478     int x = event.GetX();
3479     int y = event.GetY();
3480     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
3481     wxDataViewColumn *col = NULL;
3482
3483     int xpos = 0;
3484     unsigned int cols = GetOwner()->GetColumnCount();
3485     unsigned int i;
3486     for (i = 0; i < cols; i++)
3487     {
3488         wxDataViewColumn *c = GetOwner()->GetColumnAt( i );
3489         if (c->IsHidden())
3490             continue;      // skip it!
3491
3492         if (x < xpos + c->GetWidth())
3493         {
3494             col = c;
3495             break;
3496         }
3497         xpos += c->GetWidth();
3498     }
3499     if (!col)
3500     {
3501         event.Skip();
3502         return;
3503     }
3504
3505     wxDataViewRenderer *cell = col->GetRenderer();
3506     unsigned int current = GetLineAt( y );
3507     if ((current >= GetRowCount()) || (x > GetEndOfLastCol()))
3508     {
3509         // Unselect all if below the last row ?
3510         event.Skip();
3511         return;
3512     }
3513
3514     // Test whether the mouse is hovered on the tree item button
3515     bool hoverOverExpander = false;
3516     if ((!IsList()) && (GetOwner()->GetExpanderColumn() == col))
3517     {
3518         wxDataViewTreeNode * node = GetTreeNodeByRow(current);
3519         if( node!=NULL && node->HasChildren() )
3520         {
3521             int indent = node->GetIndentLevel();
3522             indent = GetOwner()->GetIndent()*indent;
3523
3524             // we make the rectangle we are looking in a bit bigger than the actual
3525             // visual expander so the user can hit that little thing reliably
3526             wxRect rect( xpos + indent,
3527                         GetLineStart( current ) + (GetLineHeight(current) - m_lineHeight)/2,
3528                         m_lineHeight, m_lineHeight);
3529             if( rect.Contains(x, y) )
3530             {
3531                 // So the mouse is over the expander
3532                 hoverOverExpander = true;
3533                 if (m_underMouse && m_underMouse != node)
3534                 {
3535                     // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
3536                     RefreshRow(GetRowByItem(m_underMouse->GetItem()));
3537                 }
3538                 if (m_underMouse != node)
3539                 {
3540                     // wxLogMessage("Do the row: %d", current);
3541                     RefreshRow(current);
3542                 }
3543                 m_underMouse = node;
3544             }
3545         }
3546         if (node!=NULL && !node->HasChildren())
3547             delete node;
3548     }
3549     if (!hoverOverExpander)
3550     {
3551         if (m_underMouse != NULL)
3552         {
3553             // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
3554             RefreshRow(GetRowByItem(m_underMouse->GetItem()));
3555             m_underMouse = NULL;
3556         }
3557     }
3558
3559     wxDataViewModel *model = GetOwner()->GetModel();
3560
3561 #if wxUSE_DRAG_AND_DROP
3562     if (event.Dragging())
3563     {
3564         if (m_dragCount == 0)
3565         {
3566             // we have to report the raw, physical coords as we want to be
3567             // able to call HitTest(event.m_pointDrag) from the user code to
3568             // get the item being dragged
3569             m_dragStart = event.GetPosition();
3570         }
3571
3572         m_dragCount++;
3573
3574         if (m_dragCount != 3)
3575             return;
3576
3577         if (event.LeftIsDown())
3578         {
3579             m_owner->CalcUnscrolledPosition( m_dragStart.x, m_dragStart.y,
3580                                              &m_dragStart.x, &m_dragStart.y );
3581             unsigned int drag_item_row = GetLineAt( m_dragStart.y );
3582             wxDataViewItem item = GetItemByRow( drag_item_row );
3583
3584             // Notify cell about drag
3585             wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_BEGIN_DRAG, m_owner->GetId() );
3586             event.SetEventObject( m_owner );
3587             event.SetItem( item );
3588             event.SetModel( model );
3589             if (!m_owner->HandleWindowEvent( event ))
3590                 return;
3591
3592             if (!event.IsAllowed())
3593                 return;
3594
3595             wxDataObject *obj = event.GetDataObject();
3596             if (!obj)
3597                 return;
3598
3599             wxDataViewDropSource drag( this, drag_item_row );
3600             drag.SetData( *obj );
3601             /* wxDragResult res = */ drag.DoDragDrop();
3602             delete obj;
3603         }
3604         return;
3605     }
3606     else
3607     {
3608         m_dragCount = 0;
3609     }
3610 #endif // wxUSE_DRAG_AND_DROP
3611
3612     bool simulateClick = false;
3613
3614     if (event.ButtonDClick())
3615     {
3616         m_renameTimer->Stop();
3617         m_lastOnSame = false;
3618     }
3619
3620     wxDataViewItem item = GetItemByRow(current);
3621     bool ignore_other_columns =
3622         ((GetOwner()->GetExpanderColumn() != col) &&
3623         (model->IsContainer(item)) &&
3624         (!model->HasContainerColumns(item)));
3625
3626     if (event.LeftDClick())
3627     {
3628         if(hoverOverExpander)
3629         {
3630             // a double click on the expander will be converted into a "simulated" normal click
3631             simulateClick = true;
3632         }
3633         else if ( current == m_lineLastClicked )
3634         {
3635             if ((!ignore_other_columns) && (cell->GetMode() == wxDATAVIEW_CELL_ACTIVATABLE))
3636             {
3637                 const unsigned colIdx = col->GetModelColumn();
3638
3639                 cell->PrepareForItem(model, item, colIdx);
3640
3641                 wxRect cell_rect( xpos, GetLineStart( current ),
3642                                 col->GetWidth(), GetLineHeight( current ) );
3643                 cell->WXOnActivate( cell_rect, model, item, colIdx );
3644             }
3645             else
3646             {
3647                 wxWindow *parent = GetParent();
3648                 wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED, parent->GetId());
3649                 le.SetItem( item );
3650                 le.SetColumn( col->GetModelColumn() );
3651                 le.SetDataViewColumn( col );
3652                 le.SetEventObject(parent);
3653                 le.SetModel(GetOwner()->GetModel());
3654
3655                 parent->GetEventHandler()->ProcessEvent(le);
3656             }
3657             return;
3658         }
3659         else
3660         {
3661             // The first click was on another item, so don't interpret this as
3662             // a double click, but as a simple click instead
3663             simulateClick = true;
3664         }
3665     }
3666
3667     if (event.LeftUp() && !hoverOverExpander)
3668     {
3669         if (m_lineSelectSingleOnUp != (unsigned int)-1)
3670         {
3671             // select single line
3672             SelectAllRows( false );
3673             SelectRow( m_lineSelectSingleOnUp, true );
3674             SendSelectionChangedEvent( GetItemByRow(m_lineSelectSingleOnUp) );
3675         }
3676
3677         // If the user click the expander, we do not do editing even if the column
3678         // with expander are editable
3679         if (m_lastOnSame && !ignore_other_columns)
3680         {
3681             if ((col == m_currentCol) && (current == m_currentRow) &&
3682                 (cell->GetMode() & wxDATAVIEW_CELL_EDITABLE) )
3683             {
3684                 m_renameTimer->Start( 100, true );
3685             }
3686         }
3687
3688         m_lastOnSame = false;
3689         m_lineSelectSingleOnUp = (unsigned int)-1;
3690     }
3691     else if(!event.LeftUp())
3692     {
3693         // This is necessary, because after a DnD operation in
3694         // from and to ourself, the up event is swallowed by the
3695         // DnD code. So on next non-up event (which means here and
3696         // now) m_lineSelectSingleOnUp should be reset.
3697         m_lineSelectSingleOnUp = (unsigned int)-1;
3698     }
3699
3700     if (event.RightDown())
3701     {
3702         m_lineBeforeLastClicked = m_lineLastClicked;
3703         m_lineLastClicked = current;
3704
3705         // If the item is already selected, do not update the selection.
3706         // Multi-selections should not be cleared if a selected item is clicked.
3707         if (!IsRowSelected(current))
3708         {
3709             SelectAllRows(false);
3710             ChangeCurrentRow(current);
3711             SelectRow(m_currentRow,true);
3712             SendSelectionChangedEvent(GetItemByRow( m_currentRow ) );
3713         }
3714     }
3715     else if (event.RightUp())
3716     {
3717         wxVariant value;
3718         model->GetValue( value, item, col->GetModelColumn() );
3719         wxWindow *parent = GetParent();
3720         wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_CONTEXT_MENU, parent->GetId());
3721         le.SetItem( item );
3722         le.SetColumn( col->GetModelColumn() );
3723         le.SetDataViewColumn( col );
3724         le.SetEventObject(parent);
3725         le.SetModel(GetOwner()->GetModel());
3726         le.SetValue(value);
3727         parent->GetEventHandler()->ProcessEvent(le);
3728     }
3729     else if (event.MiddleDown())
3730     {
3731     }
3732
3733     if((event.LeftDown() || simulateClick) && hoverOverExpander)
3734     {
3735         wxDataViewTreeNode* node = GetTreeNodeByRow(current);
3736
3737         // hoverOverExpander being true tells us that our node must be
3738         // valid and have children.
3739         // So we don't need any extra checks.
3740         if( node->IsOpen() )
3741             Collapse(current);
3742         else
3743             Expand(current);
3744     }
3745     else if ((event.LeftDown() || simulateClick) && !hoverOverExpander)
3746     {
3747         m_lineBeforeLastClicked = m_lineLastClicked;
3748         m_lineLastClicked = current;
3749
3750         unsigned int oldCurrentRow = m_currentRow;
3751         bool oldWasSelected = IsRowSelected(m_currentRow);
3752
3753         bool cmdModifierDown = event.CmdDown();
3754         if ( IsSingleSel() || !(cmdModifierDown || event.ShiftDown()) )
3755         {
3756             if ( IsSingleSel() || !IsRowSelected(current) )
3757             {
3758                 SelectAllRows( false );
3759                 ChangeCurrentRow(current);
3760                 SelectRow(m_currentRow,true);
3761                 SendSelectionChangedEvent(GetItemByRow( m_currentRow ) );
3762             }
3763             else // multi sel & current is highlighted & no mod keys
3764             {
3765                 m_lineSelectSingleOnUp = current;
3766                 ChangeCurrentRow(current); // change focus
3767             }
3768         }
3769         else // multi sel & either ctrl or shift is down
3770         {
3771             if (cmdModifierDown)
3772             {
3773                 ChangeCurrentRow(current);
3774                 ReverseRowSelection(m_currentRow);
3775                 SendSelectionChangedEvent(GetItemByRow(m_currentRow));
3776             }
3777             else if (event.ShiftDown())
3778             {
3779                 ChangeCurrentRow(current);
3780
3781                 unsigned int lineFrom = oldCurrentRow,
3782                     lineTo = current;
3783
3784                 if ( lineTo < lineFrom )
3785                 {
3786                     lineTo = lineFrom;
3787                     lineFrom = m_currentRow;
3788                 }
3789
3790                 SelectRows(lineFrom, lineTo, true);
3791                 SendSelectionChangedEvent(GetItemByRow(m_selection[0]) );
3792             }
3793             else // !ctrl, !shift
3794             {
3795                 // test in the enclosing if should make it impossible
3796                 wxFAIL_MSG( wxT("how did we get here?") );
3797             }
3798         }
3799
3800         if (m_currentRow != oldCurrentRow)
3801             RefreshRow( oldCurrentRow );
3802
3803         wxDataViewColumn *oldCurrentCol = m_currentCol;
3804
3805         // Update selection here...
3806         m_currentCol = col;
3807
3808         m_lastOnSame = !simulateClick && ((col == oldCurrentCol) &&
3809                         (current == oldCurrentRow)) && oldWasSelected;
3810
3811         // Call LeftClick after everything else as under GTK+
3812         if (cell->GetMode() & wxDATAVIEW_CELL_ACTIVATABLE)
3813         {
3814             // notify cell about click
3815             cell->PrepareForItem(model, item, col->GetModelColumn());
3816
3817             wxRect cell_rect( xpos, GetLineStart( current ),
3818                               col->GetWidth(), GetLineHeight( current ) );
3819
3820             // Report position relative to the cell's custom area, i.e.
3821             // no the entire space as given by the control but the one
3822             // used by the renderer after calculation of alignment etc.
3823
3824             // adjust the rectangle ourselves to account for the alignment
3825             wxRect rectItem = cell_rect;
3826             const int align = cell->GetAlignment();
3827             if ( align != wxDVR_DEFAULT_ALIGNMENT )
3828             {
3829                 const wxSize size = cell->GetSize();
3830
3831                 if ( size.x >= 0 && size.x < cell_rect.width )
3832                 {
3833                     if ( align & wxALIGN_CENTER_HORIZONTAL )
3834                         rectItem.x += (cell_rect.width - size.x)/2;
3835                     else if ( align & wxALIGN_RIGHT )
3836                         rectItem.x += cell_rect.width - size.x;
3837                     // else: wxALIGN_LEFT is the default
3838                 }
3839
3840                 if ( size.y >= 0 && size.y < cell_rect.height )
3841                 {
3842                     if ( align & wxALIGN_CENTER_VERTICAL )
3843                         rectItem.y += (cell_rect.height - size.y)/2;
3844                     else if ( align & wxALIGN_BOTTOM )
3845                         rectItem.y += cell_rect.height - size.y;
3846                     // else: wxALIGN_TOP is the default
3847                 }
3848             }
3849
3850             wxPoint pos( event.GetPosition() );
3851             pos.x -= rectItem.x;
3852             pos.y -= rectItem.y;
3853
3854             m_owner->CalcUnscrolledPosition( pos.x, pos.y, &pos.x, &pos.y );
3855
3856              /* ignore ret */ cell->WXOnLeftClick( pos, cell_rect,
3857                               model, item, col->GetModelColumn());
3858         }
3859     }
3860 }
3861
3862 void wxDataViewMainWindow::OnSetFocus( wxFocusEvent &event )
3863 {
3864     m_hasFocus = true;
3865
3866     if (HasCurrentRow())
3867         Refresh();
3868
3869     event.Skip();
3870 }
3871
3872 void wxDataViewMainWindow::OnKillFocus( wxFocusEvent &event )
3873 {
3874     m_hasFocus = false;
3875
3876     if (HasCurrentRow())
3877         Refresh();
3878
3879     event.Skip();
3880 }
3881
3882 wxDataViewItem wxDataViewMainWindow::GetSelection() const
3883 {
3884     if( m_selection.GetCount() != 1 )
3885         return wxDataViewItem();
3886
3887     return GetItemByRow( m_selection.Item(0));
3888 }
3889
3890 //-----------------------------------------------------------------------------
3891 // wxDataViewCtrl
3892 //-----------------------------------------------------------------------------
3893
3894 WX_DEFINE_LIST(wxDataViewColumnList)
3895
3896 IMPLEMENT_DYNAMIC_CLASS(wxDataViewCtrl, wxDataViewCtrlBase)
3897 BEGIN_EVENT_TABLE(wxDataViewCtrl, wxDataViewCtrlBase)
3898     EVT_SIZE(wxDataViewCtrl::OnSize)
3899 END_EVENT_TABLE()
3900
3901 wxDataViewCtrl::~wxDataViewCtrl()
3902 {
3903     if (m_notifier)
3904         GetModel()->RemoveNotifier( m_notifier );
3905
3906     m_cols.Clear();
3907     m_colsBestWidths.clear();
3908 }
3909
3910 void wxDataViewCtrl::Init()
3911 {
3912     m_cols.DeleteContents(true);
3913     m_notifier = NULL;
3914
3915     // No sorting column at start
3916     m_sortingColumnIdx = wxNOT_FOUND;
3917
3918     m_headerArea = NULL;
3919 }
3920
3921 bool wxDataViewCtrl::Create(wxWindow *parent,
3922                             wxWindowID id,
3923                             const wxPoint& pos,
3924                             const wxSize& size,
3925                             long style,
3926                             const wxValidator& validator,
3927                             const wxString& name)
3928 {
3929 //    if ( (style & wxBORDER_MASK) == 0)
3930 //        style |= wxBORDER_SUNKEN;
3931
3932     Init();
3933
3934     if (!wxControl::Create( parent, id, pos, size,
3935                             style | wxScrolledWindowStyle, validator, name))
3936         return false;
3937
3938     SetInitialSize(size);
3939
3940 #ifdef __WXMAC__
3941     MacSetClipChildren( true );
3942 #endif
3943
3944     m_clientArea = new wxDataViewMainWindow( this, wxID_ANY );
3945
3946     // We use the cursor keys for moving the selection, not scrolling, so call
3947     // this method to ensure wxScrollHelperEvtHandler doesn't catch all
3948     // keyboard events forwarded to us from wxListMainWindow.
3949     DisableKeyboardScrolling();
3950
3951     if (HasFlag(wxDV_NO_HEADER))
3952         m_headerArea = NULL;
3953     else
3954         m_headerArea = new wxDataViewHeaderWindow(this);
3955
3956     SetTargetWindow( m_clientArea );
3957
3958     wxBoxSizer *sizer = new wxBoxSizer( wxVERTICAL );
3959     if (m_headerArea)
3960         sizer->Add( m_headerArea, 0, wxGROW );
3961     sizer->Add( m_clientArea, 1, wxGROW );
3962     SetSizer( sizer );
3963
3964     return true;
3965 }
3966
3967 wxBorder wxDataViewCtrl::GetDefaultBorder() const
3968 {
3969     return wxBORDER_THEME;
3970 }
3971
3972 #ifdef __WXMSW__
3973 WXLRESULT wxDataViewCtrl::MSWWindowProc(WXUINT nMsg,
3974                                         WXWPARAM wParam,
3975                                         WXLPARAM lParam)
3976 {
3977     WXLRESULT rc = wxDataViewCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
3978
3979 #ifndef __WXWINCE__
3980     // we need to process arrows ourselves for scrolling
3981     if ( nMsg == WM_GETDLGCODE )
3982     {
3983         rc |= DLGC_WANTARROWS;
3984     }
3985 #endif
3986
3987     return rc;
3988 }
3989 #endif
3990
3991 wxSize wxDataViewCtrl::GetSizeAvailableForScrollTarget(const wxSize& size)
3992 {
3993     wxSize newsize = size;
3994     if (!HasFlag(wxDV_NO_HEADER) && (m_headerArea))
3995     newsize.y -= m_headerArea->GetSize().y;
3996
3997     return newsize;
3998 }
3999
4000 void wxDataViewCtrl::OnSize( wxSizeEvent &WXUNUSED(event) )
4001 {
4002     // We need to override OnSize so that our scrolled
4003     // window a) does call Layout() to use sizers for
4004     // positioning the controls but b) does not query
4005     // the sizer for their size and use that for setting
4006     // the scrollable area as set that ourselves by
4007     // calling SetScrollbar() further down.
4008
4009     Layout();
4010
4011     AdjustScrollbars();
4012 }
4013
4014 void wxDataViewCtrl::SetFocus()
4015 {
4016     if (m_clientArea)
4017         m_clientArea->SetFocus();
4018 }
4019
4020 bool wxDataViewCtrl::AssociateModel( wxDataViewModel *model )
4021 {
4022     if (!wxDataViewCtrlBase::AssociateModel( model ))
4023         return false;
4024
4025     m_notifier = new wxGenericDataViewModelNotifier( m_clientArea );
4026
4027     model->AddNotifier( m_notifier );
4028
4029     m_clientArea->DestroyTree();
4030
4031     m_clientArea->BuildTree(model);
4032
4033     m_clientArea->UpdateDisplay();
4034
4035     return true;
4036 }
4037
4038 #if wxUSE_DRAG_AND_DROP
4039
4040 bool wxDataViewCtrl::EnableDragSource( const wxDataFormat &format )
4041 {
4042     return m_clientArea->EnableDragSource( format );
4043 }
4044
4045 bool wxDataViewCtrl::EnableDropTarget( const wxDataFormat &format )
4046 {
4047     return m_clientArea->EnableDropTarget( format );
4048 }
4049
4050 #endif // wxUSE_DRAG_AND_DROP
4051
4052 bool wxDataViewCtrl::AppendColumn( wxDataViewColumn *col )
4053 {
4054     if (!wxDataViewCtrlBase::AppendColumn(col))
4055         return false;
4056
4057     m_cols.Append( col );
4058     m_colsBestWidths.push_back(0);
4059     OnColumnsCountChanged();
4060     return true;
4061 }
4062
4063 bool wxDataViewCtrl::PrependColumn( wxDataViewColumn *col )
4064 {
4065     if (!wxDataViewCtrlBase::PrependColumn(col))
4066         return false;
4067
4068     m_cols.Insert( col );
4069     m_colsBestWidths.insert(m_colsBestWidths.begin(), 0);
4070     OnColumnsCountChanged();
4071     return true;
4072 }
4073
4074 bool wxDataViewCtrl::InsertColumn( unsigned int pos, wxDataViewColumn *col )
4075 {
4076     if (!wxDataViewCtrlBase::InsertColumn(pos,col))
4077         return false;
4078
4079     m_cols.Insert( pos, col );
4080     m_colsBestWidths.insert(m_colsBestWidths.begin() + pos, 0);
4081     OnColumnsCountChanged();
4082     return true;
4083 }
4084
4085 void wxDataViewCtrl::OnColumnChange(unsigned int idx)
4086 {
4087     if ( m_headerArea )
4088         m_headerArea->UpdateColumn(idx);
4089
4090     m_clientArea->UpdateDisplay();
4091 }
4092
4093 void wxDataViewCtrl::OnColumnsCountChanged()
4094 {
4095     if (m_headerArea)
4096         m_headerArea->SetColumnCount(GetColumnCount());
4097
4098     m_clientArea->UpdateDisplay();
4099 }
4100
4101 void wxDataViewCtrl::DoSetExpanderColumn()
4102 {
4103     m_clientArea->UpdateDisplay();
4104 }
4105
4106 void wxDataViewCtrl::DoSetIndent()
4107 {
4108     m_clientArea->UpdateDisplay();
4109 }
4110
4111 unsigned int wxDataViewCtrl::GetColumnCount() const
4112 {
4113     return m_cols.GetCount();
4114 }
4115
4116 wxDataViewColumn* wxDataViewCtrl::GetColumn( unsigned int idx ) const
4117 {
4118     return m_cols[idx];
4119 }
4120
4121 wxDataViewColumn *wxDataViewCtrl::GetColumnAt(unsigned int pos) const
4122 {
4123     // columns can't be reordered if there is no header window which allows
4124     // to do this
4125     const unsigned idx = m_headerArea ? m_headerArea->GetColumnsOrder()[pos]
4126                                     : pos;
4127
4128     return GetColumn(idx);
4129 }
4130
4131 int wxDataViewCtrl::GetColumnIndex(const wxDataViewColumn *column) const
4132 {
4133     const unsigned count = m_cols.size();
4134     for ( unsigned n = 0; n < count; n++ )
4135     {
4136         if ( m_cols[n] == column )
4137             return n;
4138     }
4139
4140     return wxNOT_FOUND;
4141 }
4142
4143 unsigned int wxDataViewCtrl::GetBestColumnWidth(int idx) const
4144 {
4145     if ( m_colsBestWidths[idx] != 0 )
4146         return m_colsBestWidths[idx];
4147
4148     const int count = m_clientArea->GetRowCount();
4149     wxDataViewColumn *column = GetColumn(idx);
4150     wxDataViewRenderer *renderer =
4151         const_cast<wxDataViewRenderer*>(column->GetRenderer());
4152
4153     class MaxWidthCalculator
4154     {
4155     public:
4156         MaxWidthCalculator(wxDataViewMainWindow *clientArea,
4157                            wxDataViewRenderer *renderer,
4158                            const wxDataViewModel *model,
4159                            unsigned column)
4160             : m_width(0),
4161               m_clientArea(clientArea),
4162               m_renderer(renderer),
4163               m_model(model),
4164               m_column(column)
4165         {
4166         }
4167
4168         void UpdateWithWidth(int width)
4169         {
4170             m_width = wxMax(m_width, width);
4171         }
4172
4173         void UpdateWithRow(int row)
4174         {
4175             wxDataViewItem item = m_clientArea->GetItemByRow(row);
4176             m_renderer->PrepareForItem(m_model, item, m_column);
4177             m_width = wxMax(m_width, m_renderer->GetSize().x);
4178         }
4179
4180         int GetMaxWidth() const { return m_width; }
4181
4182     private:
4183         int m_width;
4184         wxDataViewMainWindow *m_clientArea;
4185         wxDataViewRenderer *m_renderer;
4186         const wxDataViewModel *m_model;
4187         unsigned m_column;
4188     };
4189
4190     MaxWidthCalculator calculator(m_clientArea, renderer,
4191                                   GetModel(), column->GetModelColumn());
4192
4193     if ( m_headerArea )
4194     {
4195         int header_width = m_headerArea->GetTextExtent(column->GetTitle()).x;
4196         // Labels on native MSW header are indented on both sides
4197         header_width +=
4198             wxRendererNative::Get().GetHeaderButtonMargin(m_headerArea);
4199         calculator.UpdateWithWidth(header_width);
4200     }
4201
4202     // The code below deserves some explanation. For very large controls, we
4203     // simply can't afford to calculate sizes for all items, it takes too
4204     // long. So the best we can do is to check the first and the last N/2
4205     // items in the control for some sufficiently large N and calculate best
4206     // sizes from that. That can result in the calculated best width being too
4207     // small for some outliers, but it's better to get slightly imperfect
4208     // result than to wait several seconds after every update. To avoid highly
4209     // visible miscalculations, we also include all currently visible items
4210     // no matter what.  Finally, the value of N is determined dynamically by
4211     // measuring how much time we spent on the determining item widths so far.
4212
4213 #if wxUSE_STOPWATCH
4214     int top_part_end = count;
4215     static const long CALC_TIMEOUT = 20/*ms*/;
4216     // don't call wxStopWatch::Time() too often
4217     static const unsigned CALC_CHECK_FREQ = 100;
4218     wxStopWatch timer;
4219 #else
4220     // use some hard-coded limit, that's the best we can do without timer
4221     int top_part_end = wxMin(500, count);
4222 #endif // wxUSE_STOPWATCH/!wxUSE_STOPWATCH
4223
4224     int row = 0;
4225
4226     for ( row = 0; row < top_part_end; row++ )
4227     {
4228 #if wxUSE_STOPWATCH
4229         if ( row % CALC_CHECK_FREQ == CALC_CHECK_FREQ-1 &&
4230              timer.Time() > CALC_TIMEOUT )
4231             break;
4232 #endif // wxUSE_STOPWATCH
4233         calculator.UpdateWithRow(row);
4234     }
4235
4236     // row is the first unmeasured item now; that's our value of N/2
4237
4238     if ( row < count )
4239     {
4240         top_part_end = row;
4241
4242         // add bottom N/2 items now:
4243         const int bottom_part_start = wxMax(row, count - row);
4244         for ( row = bottom_part_start; row < count; row++ )
4245         {
4246             calculator.UpdateWithRow(row);
4247         }
4248
4249         // finally, include currently visible items in the calculation:
4250         const wxPoint origin = CalcUnscrolledPosition(wxPoint(0, 0));
4251         int first_visible = m_clientArea->GetLineAt(origin.y);
4252         int last_visible = m_clientArea->GetLineAt(origin.y + GetClientSize().y);
4253
4254         first_visible = wxMax(first_visible, top_part_end);
4255         last_visible = wxMin(bottom_part_start, last_visible);
4256
4257         for ( row = first_visible; row < last_visible; row++ )
4258         {
4259             calculator.UpdateWithRow(row);
4260         }
4261
4262         wxLogTrace("dataview",
4263                    "determined best size from %d top, %d bottom plus %d more visible items out of %d total",
4264                    top_part_end,
4265                    count - bottom_part_start,
4266                    wxMax(0, last_visible - first_visible),
4267                    count);
4268     }
4269
4270     int max_width = calculator.GetMaxWidth();
4271     if ( max_width > 0 )
4272         max_width += 2 * PADDING_RIGHTLEFT;
4273
4274     const_cast<wxDataViewCtrl*>(this)->m_colsBestWidths[idx] = max_width;
4275     return max_width;
4276 }
4277
4278 void wxDataViewCtrl::ColumnMoved(wxDataViewColumn * WXUNUSED(col),
4279                                 unsigned int WXUNUSED(new_pos))
4280 {
4281     // do _not_ reorder m_cols elements here, they should always be in the
4282     // order in which columns were added, we only display the columns in
4283     // different order
4284     m_clientArea->UpdateDisplay();
4285 }
4286
4287 bool wxDataViewCtrl::DeleteColumn( wxDataViewColumn *column )
4288 {
4289     wxDataViewColumnList::compatibility_iterator ret = m_cols.Find( column );
4290     if (!ret)
4291         return false;
4292
4293     m_colsBestWidths.erase(m_colsBestWidths.begin() + GetColumnIndex(column));
4294     m_cols.Erase(ret);
4295     OnColumnsCountChanged();
4296
4297     return true;
4298 }
4299
4300 bool wxDataViewCtrl::ClearColumns()
4301 {
4302     m_cols.Clear();
4303     m_colsBestWidths.clear();
4304     OnColumnsCountChanged();
4305     return true;
4306 }
4307
4308 void wxDataViewCtrl::InvalidateColBestWidth(int idx)
4309 {
4310     m_colsBestWidths[idx] = 0;
4311
4312     if ( m_headerArea )
4313         m_headerArea->UpdateColumn(idx);
4314 }
4315
4316 void wxDataViewCtrl::InvalidateColBestWidths()
4317 {
4318     m_colsBestWidths.clear();
4319     m_colsBestWidths.resize(m_cols.size());
4320
4321     if ( m_headerArea )
4322     {
4323         const unsigned cols = m_headerArea->GetColumnCount();
4324         for ( unsigned i = 0; i < cols; i++ )
4325             m_headerArea->UpdateColumn(i);
4326     }
4327 }
4328
4329 int wxDataViewCtrl::GetColumnPosition( const wxDataViewColumn *column ) const
4330 {
4331 #if 1
4332     unsigned int len = GetColumnCount();
4333     for ( unsigned int i = 0; i < len; i++ )
4334     {
4335         wxDataViewColumn * col = GetColumnAt(i);
4336         if (column==col)
4337             return i;
4338     }
4339
4340     return wxNOT_FOUND;
4341 #else
4342     // This returns the position in pixels which is not what we want.
4343     int ret = 0,
4344         dummy = 0;
4345     unsigned int len = GetColumnCount();
4346     for ( unsigned int i = 0; i < len; i++ )
4347     {
4348         wxDataViewColumn * col = GetColumnAt(i);
4349         if (col->IsHidden())
4350             continue;
4351         ret += col->GetWidth();
4352         if (column==col)
4353         {
4354             CalcScrolledPosition( ret, dummy, &ret, &dummy );
4355             break;
4356         }
4357     }
4358     return ret;
4359 #endif
4360 }
4361
4362 wxDataViewColumn *wxDataViewCtrl::GetSortingColumn() const
4363 {
4364     return m_sortingColumnIdx == wxNOT_FOUND ? NULL
4365                                             : GetColumn(m_sortingColumnIdx);
4366 }
4367
4368 wxDataViewItem wxDataViewCtrl::DoGetCurrentItem() const
4369 {
4370     return GetItemByRow(m_clientArea->GetCurrentRow());
4371 }
4372
4373 void wxDataViewCtrl::DoSetCurrentItem(const wxDataViewItem& item)
4374 {
4375     const int row = m_clientArea->GetRowByItem(item);
4376
4377     const unsigned oldCurrent = m_clientArea->GetCurrentRow();
4378     if ( static_cast<unsigned>(row) != oldCurrent )
4379     {
4380         m_clientArea->ChangeCurrentRow(row);
4381         m_clientArea->RefreshRow(oldCurrent);
4382         m_clientArea->RefreshRow(row);
4383     }
4384 }
4385
4386 // Selection code with wxDataViewItem as parameters
4387 wxDataViewItem wxDataViewCtrl::GetSelection() const
4388 {
4389     return m_clientArea->GetSelection();
4390 }
4391
4392 int wxDataViewCtrl::GetSelections( wxDataViewItemArray & sel ) const
4393 {
4394     sel.Empty();
4395     wxDataViewSelection selection = m_clientArea->GetSelections();
4396     int len = selection.GetCount();
4397     for( int i = 0; i < len; i ++)
4398     {
4399         unsigned int row = selection[i];
4400         sel.Add( m_clientArea->GetItemByRow( row ) );
4401     }
4402     return len;
4403 }
4404
4405 void wxDataViewCtrl::SetSelections( const wxDataViewItemArray & sel )
4406 {
4407     wxDataViewSelection selection(wxDataViewSelectionCmp);
4408
4409     wxDataViewItem last_parent;
4410
4411     int len = sel.GetCount();
4412     for( int i = 0; i < len; i ++ )
4413     {
4414         wxDataViewItem item = sel[i];
4415         wxDataViewItem parent = GetModel()->GetParent( item );
4416         if (parent)
4417         {
4418             if (parent != last_parent)
4419                 ExpandAncestors(item);
4420         }
4421
4422         last_parent = parent;
4423         int row = m_clientArea->GetRowByItem( item );
4424         if( row >= 0 )
4425             selection.Add( static_cast<unsigned int>(row) );
4426     }
4427
4428     m_clientArea->SetSelections( selection );
4429 }
4430
4431 void wxDataViewCtrl::Select( const wxDataViewItem & item )
4432 {
4433     ExpandAncestors( item );
4434
4435     int row = m_clientArea->GetRowByItem( item );
4436     if( row >= 0 )
4437     {
4438         // Unselect all rows before select another in the single select mode
4439         if (m_clientArea->IsSingleSel())
4440             m_clientArea->SelectAllRows(false);
4441
4442         m_clientArea->SelectRow(row, true);
4443
4444         // Also set focus to the selected item
4445         m_clientArea->ChangeCurrentRow( row );
4446     }
4447 }
4448
4449 void wxDataViewCtrl::Unselect( const wxDataViewItem & item )
4450 {
4451     int row = m_clientArea->GetRowByItem( item );
4452     if( row >= 0 )
4453         m_clientArea->SelectRow(row, false);
4454 }
4455
4456 bool wxDataViewCtrl::IsSelected( const wxDataViewItem & item ) const
4457 {
4458     int row = m_clientArea->GetRowByItem( item );
4459     if( row >= 0 )
4460     {
4461         return m_clientArea->IsRowSelected(row);
4462     }
4463     return false;
4464 }
4465
4466 // Selection code with row number as parameter
4467 int wxDataViewCtrl::GetSelections( wxArrayInt & sel ) const
4468 {
4469     sel.Empty();
4470     wxDataViewSelection selection = m_clientArea->GetSelections();
4471     int len = selection.GetCount();
4472     for( int i = 0; i < len; i ++)
4473     {
4474         unsigned int row = selection[i];
4475         sel.Add( row );
4476     }
4477     return len;
4478 }
4479
4480 void wxDataViewCtrl::SetSelections( const wxArrayInt & sel )
4481 {
4482     wxDataViewSelection selection(wxDataViewSelectionCmp);
4483     int len = sel.GetCount();
4484     for( int i = 0; i < len; i ++ )
4485     {
4486         int row = sel[i];
4487         if( row >= 0 )
4488             selection.Add( static_cast<unsigned int>(row) );
4489     }
4490     m_clientArea->SetSelections( selection );
4491 }
4492
4493 void wxDataViewCtrl::Select( int row )
4494 {
4495     if( row >= 0 )
4496     {
4497         if (m_clientArea->IsSingleSel())
4498             m_clientArea->SelectAllRows(false);
4499         m_clientArea->SelectRow( row, true );
4500     }
4501 }
4502
4503 void wxDataViewCtrl::Unselect( int row )
4504 {
4505     if( row >= 0 )
4506         m_clientArea->SelectRow(row, false);
4507 }
4508
4509 bool wxDataViewCtrl::IsSelected( int row ) const
4510 {
4511     if( row >= 0 )
4512         return m_clientArea->IsRowSelected(row);
4513     return false;
4514 }
4515
4516 void wxDataViewCtrl::SelectRange( int from, int to )
4517 {
4518     wxArrayInt sel;
4519     for( int i = from; i < to; i ++ )
4520         sel.Add( i );
4521     m_clientArea->Select(sel);
4522 }
4523
4524 void wxDataViewCtrl::UnselectRange( int from, int to )
4525 {
4526     wxDataViewSelection sel = m_clientArea->GetSelections();
4527     for( int i = from; i < to; i ++ )
4528         if( sel.Index( i ) != wxNOT_FOUND )
4529             sel.Remove( i );
4530     m_clientArea->SetSelections(sel);
4531 }
4532
4533 void wxDataViewCtrl::SelectAll()
4534 {
4535     m_clientArea->SelectAllRows(true);
4536 }
4537
4538 void wxDataViewCtrl::UnselectAll()
4539 {
4540     m_clientArea->SelectAllRows(false);
4541 }
4542
4543 void wxDataViewCtrl::EnsureVisible( int row, int column )
4544 {
4545     if( row < 0 )
4546         row = 0;
4547     if( row > (int) m_clientArea->GetRowCount() )
4548         row = m_clientArea->GetRowCount();
4549
4550     int first = m_clientArea->GetFirstVisibleRow();
4551     int last = m_clientArea->GetLastVisibleRow();
4552     if( row < first )
4553         m_clientArea->ScrollTo( row, column );
4554     else if( row > last )
4555         m_clientArea->ScrollTo( row - last + first, column );
4556     else
4557         m_clientArea->ScrollTo( first, column );
4558 }
4559
4560 void wxDataViewCtrl::EnsureVisible( const wxDataViewItem & item, const wxDataViewColumn * column )
4561 {
4562     ExpandAncestors( item );
4563
4564     m_clientArea->RecalculateDisplay();
4565
4566     int row = m_clientArea->GetRowByItem(item);
4567     if( row >= 0 )
4568     {
4569         if( column == NULL )
4570             EnsureVisible(row, -1);
4571         else
4572             EnsureVisible( row, GetColumnIndex(column) );
4573     }
4574
4575 }
4576
4577 void wxDataViewCtrl::HitTest( const wxPoint & point, wxDataViewItem & item,
4578                               wxDataViewColumn* &column ) const
4579 {
4580     m_clientArea->HitTest(point, item, column);
4581 }
4582
4583 wxRect wxDataViewCtrl::GetItemRect( const wxDataViewItem & item,
4584                                     const wxDataViewColumn* column ) const
4585 {
4586     return m_clientArea->GetItemRect(item, column);
4587 }
4588
4589 wxDataViewItem wxDataViewCtrl::GetItemByRow( unsigned int row ) const
4590 {
4591     return m_clientArea->GetItemByRow( row );
4592 }
4593
4594 int wxDataViewCtrl::GetRowByItem( const wxDataViewItem & item ) const
4595 {
4596     return m_clientArea->GetRowByItem( item );
4597 }
4598
4599 void wxDataViewCtrl::Expand( const wxDataViewItem & item )
4600 {
4601     ExpandAncestors( item );
4602
4603     int row = m_clientArea->GetRowByItem( item );
4604     if (row != -1)
4605         m_clientArea->Expand(row);
4606 }
4607
4608 void wxDataViewCtrl::Collapse( const wxDataViewItem & item )
4609 {
4610     int row = m_clientArea->GetRowByItem( item );
4611     if (row != -1)
4612         m_clientArea->Collapse(row);
4613 }
4614
4615 bool wxDataViewCtrl::IsExpanded( const wxDataViewItem & item ) const
4616 {
4617     int row = m_clientArea->GetRowByItem( item );
4618     if (row != -1)
4619         return m_clientArea->IsExpanded(row);
4620     return false;
4621 }
4622
4623 void wxDataViewCtrl::StartEditor( const wxDataViewItem & item, unsigned int column )
4624 {
4625     wxDataViewColumn* col = GetColumn( column );
4626     if (!col)
4627         return;
4628
4629     wxRect itemRect = GetItemRect(item, col);
4630     wxDataViewRenderer* renderer = col->GetRenderer();
4631     if (renderer->GetMode() == wxDATAVIEW_CELL_EDITABLE)
4632         renderer->StartEditing(item, itemRect);
4633 }
4634
4635 #endif // !wxUSE_GENERICDATAVIEWCTRL
4636
4637 #endif // wxUSE_DATAVIEWCTRL