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     void SetRowHeight( int lineHeight ) { m_lineHeight = lineHeight; }
 536
 537     // Some useful functions for row and item mapping
 538     wxDataViewItem GetItemByRow( unsigned int row ) const;
 539     int GetRowByItem( const wxDataViewItem & item ) const;
 540
 541     // Methods for building the mapping tree
 542     void BuildTree( wxDataViewModel  * model );
 543     void DestroyTree();
 544     void HitTest( const wxPoint & point, wxDataViewItem & item, wxDataViewColumn* &column );
 545     wxRect GetItemRect( const wxDataViewItem & item, const wxDataViewColumn* column );
 546
 547     void Expand( unsigned int row );
 548     void Collapse( unsigned int row );
 549     bool IsExpanded( unsigned int row ) const;
 550     bool HasChildren( unsigned int row ) const;
 551
 552 #if wxUSE_DRAG_AND_DROP
 553     bool EnableDragSource( const wxDataFormat &format );
 554     bool EnableDropTarget( const wxDataFormat &format );
 555
 556     void RemoveDropHint();
 557     wxDragResult OnDragOver( wxDataFormat format, wxCoord x, wxCoord y, wxDragResult def );
 558     bool OnDrop( wxDataFormat format, wxCoord x, wxCoord y );
 559     wxDragResult OnData( wxDataFormat format, wxCoord x, wxCoord y, wxDragResult def );
 560     void OnLeave();
 561 #endif // wxUSE_DRAG_AND_DROP
 562
 563 private:
 564     wxDataViewTreeNode * GetTreeNodeByRow( unsigned int row ) const;
 565     // We did not need this temporarily
 566     // wxDataViewTreeNode * GetTreeNodeByItem( const wxDataViewItem & item );
 567
 568     int RecalculateCount();
 569
 570     wxDataViewEvent SendExpanderEvent( wxEventType type, const wxDataViewItem & item );
 571
 572     wxDataViewTreeNode * FindNode( const wxDataViewItem & item );
 573
 574 private:
 575     wxDataViewCtrl             *m_owner;
 576     int                         m_lineHeight;
 577     bool                        m_dirty;
 578
 579     wxDataViewColumn           *m_currentCol;
 580     unsigned int                m_currentRow;
 581     wxDataViewSelection         m_selection;
 582
 583     wxDataViewRenameTimer      *m_renameTimer;
 584     bool                        m_lastOnSame;
 585
 586     bool                        m_hasFocus;
 587
 588 #if wxUSE_DRAG_AND_DROP
 589     int                         m_dragCount;
 590     wxPoint                     m_dragStart;
 591
 592     bool                        m_dragEnabled;
 593     wxDataFormat                m_dragFormat;
 594
 595     bool                        m_dropEnabled;
 596     wxDataFormat                m_dropFormat;
 597     bool                        m_dropHint;
 598     unsigned int                m_dropHintLine;
 599 #endif // wxUSE_DRAG_AND_DROP
 600
 601     // for double click logic
 602     unsigned int m_lineLastClicked,
 603         m_lineBeforeLastClicked,
 604         m_lineSelectSingleOnUp;
 605
 606     // the pen used to draw horiz/vertical rules
 607     wxPen m_penRule;
 608
 609     // the pen used to draw the expander and the lines
 610     wxPen m_penExpander;
 611
 612     // This is the tree structure of the model
 613     wxDataViewTreeNode * m_root;
 614     int m_count;
 615
 616     // This is the tree node under the cursor
 617     wxDataViewTreeNode * m_underMouse;
 618
 619 private:
 620     DECLARE_DYNAMIC_CLASS(wxDataViewMainWindow)
 621     DECLARE_EVENT_TABLE()
 622 };
 623
 624 // ---------------------------------------------------------
 625 // wxGenericDataViewModelNotifier
 626 // ---------------------------------------------------------
 627
 628 class wxGenericDataViewModelNotifier: public wxDataViewModelNotifier
 629 {
 630 public:
 631     wxGenericDataViewModelNotifier( wxDataViewMainWindow *mainWindow )
 632         { m_mainWindow = mainWindow; }
 633
 634     virtual bool ItemAdded( const wxDataViewItem & parent, const wxDataViewItem & item )
 635         { return m_mainWindow->ItemAdded( parent , item ); }
 636     virtual bool ItemDeleted( const wxDataViewItem &parent, const wxDataViewItem &item )
 637         { return m_mainWindow->ItemDeleted( parent, item ); }
 638     virtual bool ItemChanged( const wxDataViewItem & item )
 639         { return m_mainWindow->ItemChanged(item);  }
 640     virtual bool ValueChanged( const wxDataViewItem & item , unsigned int col )
 641         { return m_mainWindow->ValueChanged( item, col ); }
 642     virtual bool Cleared()
 643         { return m_mainWindow->Cleared(); }
 644     virtual void Resort()
 645         { m_mainWindow->Resort(); }
 646
 647     wxDataViewMainWindow    *m_mainWindow;
 648 };
 649
 650 // ---------------------------------------------------------
 651 // wxDataViewRenderer
 652 // ---------------------------------------------------------
 653
 654 IMPLEMENT_ABSTRACT_CLASS(wxDataViewRenderer, wxDataViewRendererBase)
 655
 656 wxDataViewRenderer::wxDataViewRenderer( const wxString &varianttype,
 657                                         wxDataViewCellMode mode,
 658                                         int align) :
 659     wxDataViewCustomRendererBase( varianttype, mode, align )
 660 {
 661     m_align = align;
 662     m_mode = mode;
 663     m_ellipsizeMode = wxELLIPSIZE_MIDDLE;
 664     m_dc = NULL;
 665 }
 666
 667 wxDataViewRenderer::~wxDataViewRenderer()
 668 {
 669     delete m_dc;
 670 }
 671
 672 wxDC *wxDataViewRenderer::GetDC()
 673 {
 674     if (m_dc == NULL)
 675     {
 676         if (GetOwner() == NULL)
 677             return NULL;
 678         if (GetOwner()->GetOwner() == NULL)
 679             return NULL;
 680         m_dc = new wxClientDC( GetOwner()->GetOwner() );
 681     }
 682
 683     return m_dc;
 684 }
 685
 686 void wxDataViewRenderer::SetAlignment( int align )
 687 {
 688     m_align=align;
 689 }
 690
 691 int wxDataViewRenderer::GetAlignment() const
 692 {
 693     return m_align;
 694 }
 695
 696 // ---------------------------------------------------------
 697 // wxDataViewCustomRenderer
 698 // ---------------------------------------------------------
 699
 700 IMPLEMENT_ABSTRACT_CLASS(wxDataViewCustomRenderer, wxDataViewRenderer)
 701
 702 wxDataViewCustomRenderer::wxDataViewCustomRenderer( const wxString &varianttype,
 703                         wxDataViewCellMode mode, int align ) :
 704     wxDataViewRenderer( varianttype, mode, align )
 705 {
 706 }
 707
 708 // ---------------------------------------------------------
 709 // wxDataViewTextRenderer
 710 // ---------------------------------------------------------
 711
 712 IMPLEMENT_CLASS(wxDataViewTextRenderer, wxDataViewRenderer)
 713
 714 wxDataViewTextRenderer::wxDataViewTextRenderer( const wxString &varianttype,
 715                                                 wxDataViewCellMode mode, int align ) :
 716     wxDataViewRenderer( varianttype, mode, align )
 717 {
 718 }
 719
 720 bool wxDataViewTextRenderer::SetValue( const wxVariant &value )
 721 {
 722     m_text = value.GetString();
 723
 724     return true;
 725 }
 726
 727 bool wxDataViewTextRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 728 {
 729     return false;
 730 }
 731
 732 bool wxDataViewTextRenderer::HasEditorCtrl() const
 733 {
 734     return true;
 735 }
 736
 737 wxWindow* wxDataViewTextRenderer::CreateEditorCtrl( wxWindow *parent,
 738         wxRect labelRect, const wxVariant &value )
 739 {
 740     wxTextCtrl* ctrl = new wxTextCtrl( parent, wxID_ANY, value,
 741                                        wxPoint(labelRect.x,labelRect.y),
 742                                        wxSize(labelRect.width,labelRect.height) );
 743
 744     // select the text in the control an place the cursor at the end
 745     ctrl->SetInsertionPointEnd();
 746     ctrl->SelectAll();
 747
 748     return ctrl;
 749 }
 750
 751 bool wxDataViewTextRenderer::GetValueFromEditorCtrl( wxWindow *editor, wxVariant &value )
 752 {
 753     wxTextCtrl *text = (wxTextCtrl*) editor;
 754     value = text->GetValue();
 755     return true;
 756 }
 757
 758 bool wxDataViewTextRenderer::Render(wxRect rect, wxDC *dc, int state)
 759 {
 760     RenderText(m_text, 0, rect, dc, state);
 761     return true;
 762 }
 763
 764 wxSize wxDataViewTextRenderer::GetSize() const
 765 {
 766     if (!m_text.empty())
 767         return GetTextExtent(m_text);
 768     else
 769         return wxSize(wxDVC_DEFAULT_RENDERER_SIZE,wxDVC_DEFAULT_RENDERER_SIZE);
 770 }
 771
 772 // ---------------------------------------------------------
 773 // wxDataViewBitmapRenderer
 774 // ---------------------------------------------------------
 775
 776 IMPLEMENT_CLASS(wxDataViewBitmapRenderer, wxDataViewRenderer)
 777
 778 wxDataViewBitmapRenderer::wxDataViewBitmapRenderer( const wxString &varianttype,
 779                                                     wxDataViewCellMode mode, int align ) :
 780     wxDataViewRenderer( varianttype, mode, align )
 781 {
 782 }
 783
 784 bool wxDataViewBitmapRenderer::SetValue( const wxVariant &value )
 785 {
 786     if (value.GetType() == wxT("wxBitmap"))
 787         m_bitmap << value;
 788     if (value.GetType() == wxT("wxIcon"))
 789         m_icon << value;
 790
 791     return true;
 792 }
 793
 794 bool wxDataViewBitmapRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 795 {
 796     return false;
 797 }
 798
 799 bool wxDataViewBitmapRenderer::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
 800 {
 801     if (m_bitmap.IsOk())
 802         dc->DrawBitmap( m_bitmap, cell.x, cell.y );
 803     else if (m_icon.IsOk())
 804         dc->DrawIcon( m_icon, cell.x, cell.y );
 805
 806     return true;
 807 }
 808
 809 wxSize wxDataViewBitmapRenderer::GetSize() const
 810 {
 811     if (m_bitmap.IsOk())
 812         return wxSize( m_bitmap.GetWidth(), m_bitmap.GetHeight() );
 813     else if (m_icon.IsOk())
 814         return wxSize( m_icon.GetWidth(), m_icon.GetHeight() );
 815
 816     return wxSize(wxDVC_DEFAULT_RENDERER_SIZE,wxDVC_DEFAULT_RENDERER_SIZE);
 817 }
 818
 819 // ---------------------------------------------------------
 820 // wxDataViewToggleRenderer
 821 // ---------------------------------------------------------
 822
 823 IMPLEMENT_ABSTRACT_CLASS(wxDataViewToggleRenderer, wxDataViewRenderer)
 824
 825 wxDataViewToggleRenderer::wxDataViewToggleRenderer( const wxString &varianttype,
 826                         wxDataViewCellMode mode, int align ) :
 827     wxDataViewRenderer( varianttype, mode, align )
 828 {
 829     m_toggle = false;
 830 }
 831
 832 bool wxDataViewToggleRenderer::SetValue( const wxVariant &value )
 833 {
 834     m_toggle = value.GetBool();
 835
 836     return true;
 837 }
 838
 839 bool wxDataViewToggleRenderer::GetValue( wxVariant &WXUNUSED(value) ) const
 840 {
 841     return false;
 842 }
 843
 844 bool wxDataViewToggleRenderer::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
 845 {
 846     int flags = 0;
 847     if (m_toggle)
 848         flags |= wxCONTROL_CHECKED;
 849     if (GetMode() != wxDATAVIEW_CELL_ACTIVATABLE ||
 850         GetEnabled() == false)
 851         flags |= wxCONTROL_DISABLED;
 852
 853     // check boxes we draw must always have the same, standard size (if it's
 854     // bigger than the cell size the checkbox will be truncated because the
 855     // caller had set the clipping rectangle to prevent us from drawing outside
 856     // the cell)
 857     cell.SetSize(GetSize());
 858
 859     wxRendererNative::Get().DrawCheckBox(
 860             GetOwner()->GetOwner(),
 861             *dc,
 862             cell,
 863             flags );
 864
 865     return true;
 866 }
 867
 868 bool wxDataViewToggleRenderer::WXOnLeftClick(const wxPoint& cursor,
 869                                              const wxRect& WXUNUSED(cell),
 870                                              wxDataViewModel *model,
 871                                              const wxDataViewItem& item,
 872                                              unsigned int col)
 873 {
 874     // only react to clicks directly on the checkbox, not elsewhere in the same cell:
 875     if (!wxRect(GetSize()).Contains(cursor))
 876         return false;
 877
 878     if (model->IsEnabled(item, col))
 879     {
 880         model->ChangeValue(!m_toggle, item, col);
 881         return true;
 882     }
 883
 884     return false;
 885 }
 886
 887 wxSize wxDataViewToggleRenderer::GetSize() const
 888 {
 889     // the window parameter is not used by GetCheckBoxSize() so it's
 890     // safe to pass NULL
 891     return wxRendererNative::Get().GetCheckBoxSize(NULL);
 892 }
 893
 894 // ---------------------------------------------------------
 895 // wxDataViewProgressRenderer
 896 // ---------------------------------------------------------
 897
 898 IMPLEMENT_ABSTRACT_CLASS(wxDataViewProgressRenderer, wxDataViewRenderer)
 899
 900 wxDataViewProgressRenderer::wxDataViewProgressRenderer( const wxString &label,
 901     const wxString &varianttype, wxDataViewCellMode mode, int align ) :
 902     wxDataViewRenderer( varianttype, mode, align )
 903 {
 904     m_label = label;
 905     m_value = 0;
 906 }
 907
 908 bool wxDataViewProgressRenderer::SetValue( const wxVariant &value )
 909 {
 910     m_value = (long) value;
 911
 912     if (m_value < 0) m_value = 0;
 913     if (m_value > 100) m_value = 100;
 914
 915     return true;
 916 }
 917
 918 bool wxDataViewProgressRenderer::GetValue( wxVariant &value ) const
 919 {
 920     value = (long) m_value;
 921     return true;
 922 }
 923
 924 bool
 925 wxDataViewProgressRenderer::Render(wxRect rect, wxDC *dc, int WXUNUSED(state))
 926 {
 927     // deflate the rect to leave a small border between bars in adjacent rows
 928     wxRect bar = rect.Deflate(0, 1);
 929
 930     dc->SetBrush( *wxTRANSPARENT_BRUSH );
 931     dc->SetPen( *wxBLACK_PEN );
 932     dc->DrawRectangle( bar );
 933
 934     bar.width = (int)(bar.width * m_value / 100.);
 935     dc->SetPen( *wxTRANSPARENT_PEN );
 936
 937     const wxDataViewItemAttr& attr = GetAttr();
 938     dc->SetBrush( attr.HasColour() ? wxBrush(attr.GetColour())
 939                                   : *wxBLUE_BRUSH );
 940     dc->DrawRectangle( bar );
 941
 942     return true;
 943 }
 944
 945 wxSize wxDataViewProgressRenderer::GetSize() const
 946 {
 947     return wxSize(40,12);
 948 }
 949
 950 // ---------------------------------------------------------
 951 // wxDataViewDateRenderer
 952 // ---------------------------------------------------------
 953
 954 #define wxUSE_DATE_RENDERER_POPUP (wxUSE_CALENDARCTRL && wxUSE_POPUPWIN)
 955
 956 #if wxUSE_DATE_RENDERER_POPUP
 957
 958 class wxDataViewDateRendererPopupTransient: public wxPopupTransientWindow
 959 {
 960 public:
 961     wxDataViewDateRendererPopupTransient( wxWindow* parent, wxDateTime *value,
 962         wxDataViewModel *model, const wxDataViewItem & item, unsigned int col) :
 963         wxPopupTransientWindow( parent, wxBORDER_SIMPLE ),
 964         m_item( item )
 965     {
 966         m_model = model;
 967         m_col = col;
 968         m_cal = new wxCalendarCtrl( this, wxID_ANY, *value );
 969         wxBoxSizer *sizer = new wxBoxSizer( wxHORIZONTAL );
 970         sizer->Add( m_cal, 1, wxGROW );
 971         SetSizer( sizer );
 972         sizer->Fit( this );
 973     }
 974
 975     void OnCalendar( wxCalendarEvent &event );
 976
 977     wxCalendarCtrl      *m_cal;
 978     wxDataViewModel *m_model;
 979     unsigned int               m_col;
 980     const wxDataViewItem &   m_item;
 981
 982 protected:
 983     virtual void OnDismiss()
 984     {
 985     }
 986
 987 private:
 988     DECLARE_EVENT_TABLE()
 989 };
 990
 991 BEGIN_EVENT_TABLE(wxDataViewDateRendererPopupTransient,wxPopupTransientWindow)
 992     EVT_CALENDAR( wxID_ANY, wxDataViewDateRendererPopupTransient::OnCalendar )
 993 END_EVENT_TABLE()
 994
 995 void wxDataViewDateRendererPopupTransient::OnCalendar( wxCalendarEvent &event )
 996 {
 997     m_model->ChangeValue( event.GetDate(), m_item, m_col );
 998     DismissAndNotify();
 999 }
1000
1001 #endif // wxUSE_DATE_RENDERER_POPUP
1002
1003 IMPLEMENT_ABSTRACT_CLASS(wxDataViewDateRenderer, wxDataViewRenderer)
1004
1005 wxDataViewDateRenderer::wxDataViewDateRenderer( const wxString &varianttype,
1006                         wxDataViewCellMode mode, int align ) :
1007     wxDataViewRenderer( varianttype, mode, align )
1008 {
1009 }
1010
1011 bool wxDataViewDateRenderer::SetValue( const wxVariant &value )
1012 {
1013     m_date = value.GetDateTime();
1014
1015     return true;
1016 }
1017
1018 bool wxDataViewDateRenderer::GetValue( wxVariant &value ) const
1019 {
1020     value = m_date;
1021     return true;
1022 }
1023
1024 bool wxDataViewDateRenderer::Render( wxRect cell, wxDC *dc, int state )
1025 {
1026     wxString tmp = m_date.FormatDate();
1027     RenderText( tmp, 0, cell, dc, state );
1028     return true;
1029 }
1030
1031 wxSize wxDataViewDateRenderer::GetSize() const
1032 {
1033     return GetTextExtent(m_date.FormatDate());
1034 }
1035
1036 bool wxDataViewDateRenderer::WXOnActivate(const wxRect& WXUNUSED(cell),
1037                                           wxDataViewModel *model,
1038                                           const wxDataViewItem& item,
1039                                           unsigned int col)
1040 {
1041     wxDateTime dtOld = m_date;
1042
1043 #if wxUSE_DATE_RENDERER_POPUP
1044     wxDataViewDateRendererPopupTransient *popup = new wxDataViewDateRendererPopupTransient(
1045         GetOwner()->GetOwner()->GetParent(), &dtOld, model, item, col);
1046     wxPoint pos = wxGetMousePosition();
1047     popup->Move( pos );
1048     popup->Layout();
1049     popup->Popup( popup->m_cal );
1050 #else // !wxUSE_DATE_RENDERER_POPUP
1051     wxMessageBox(dtOld.Format());
1052 #endif // wxUSE_DATE_RENDERER_POPUP/!wxUSE_DATE_RENDERER_POPUP
1053
1054     return true;
1055 }
1056
1057 // ---------------------------------------------------------
1058 // wxDataViewIconTextRenderer
1059 // ---------------------------------------------------------
1060
1061 IMPLEMENT_CLASS(wxDataViewIconTextRenderer, wxDataViewRenderer)
1062
1063 wxDataViewIconTextRenderer::wxDataViewIconTextRenderer(
1064 const wxString &varianttype, wxDataViewCellMode mode, int align ) :
1065     wxDataViewRenderer( varianttype, mode, align )
1066 {
1067     SetMode(mode);
1068     SetAlignment(align);
1069 }
1070
1071 bool wxDataViewIconTextRenderer::SetValue( const wxVariant &value )
1072 {
1073     m_value << value;
1074     return true;
1075 }
1076
1077 bool wxDataViewIconTextRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
1078 {
1079     return false;
1080 }
1081
1082 bool wxDataViewIconTextRenderer::Render(wxRect rect, wxDC *dc, int state)
1083 {
1084     int xoffset = 0;
1085
1086     const wxIcon& icon = m_value.GetIcon();
1087     if ( icon.IsOk() )
1088     {
1089         dc->DrawIcon(icon, rect.x, rect.y + (rect.height - icon.GetHeight())/2);
1090         xoffset = icon.GetWidth()+4;
1091     }
1092
1093     RenderText(m_value.GetText(), xoffset, rect, dc, state);
1094
1095     return true;
1096 }
1097
1098 wxSize wxDataViewIconTextRenderer::GetSize() const
1099 {
1100     if (!m_value.GetText().empty())
1101     {
1102         wxSize size = GetTextExtent(m_value.GetText());
1103
1104         if (m_value.GetIcon().IsOk())
1105             size.x += m_value.GetIcon().GetWidth() + 4;
1106         return size;
1107     }
1108     return wxSize(80,20);
1109 }
1110
1111 wxWindow* wxDataViewIconTextRenderer::CreateEditorCtrl(wxWindow *parent, wxRect labelRect, const wxVariant& value)
1112 {
1113     wxDataViewIconText iconText;
1114     iconText << value;
1115
1116     wxString text = iconText.GetText();
1117
1118     // adjust the label rect to take the width of the icon into account
1119     if (iconText.GetIcon().IsOk())
1120     {
1121         int w = iconText.GetIcon().GetWidth() + 4;
1122         labelRect.x += w;
1123         labelRect.width -= w;
1124     }
1125
1126     wxTextCtrl* ctrl = new wxTextCtrl( parent, wxID_ANY, text,
1127                                        wxPoint(labelRect.x,labelRect.y),
1128                                        wxSize(labelRect.width,labelRect.height) );
1129
1130     // select the text in the control an place the cursor at the end
1131     ctrl->SetInsertionPointEnd();
1132     ctrl->SelectAll();
1133
1134     return ctrl;
1135 }
1136
1137 bool wxDataViewIconTextRenderer::GetValueFromEditorCtrl( wxWindow *editor, wxVariant& value )
1138 {
1139     wxTextCtrl *text = (wxTextCtrl*) editor;
1140
1141     wxDataViewIconText iconText(text->GetValue(), m_value.GetIcon());
1142     value << iconText;
1143     return true;
1144 }
1145
1146 //-----------------------------------------------------------------------------
1147 // wxDataViewDropTarget
1148 //-----------------------------------------------------------------------------
1149
1150 #if wxUSE_DRAG_AND_DROP
1151
1152 class wxBitmapCanvas: public wxWindow
1153 {
1154 public:
1155     wxBitmapCanvas( wxWindow *parent, const wxBitmap &bitmap, const wxSize &size ) :
1156     wxWindow( parent, wxID_ANY, wxPoint(0,0), size )
1157     {
1158         m_bitmap = bitmap;
1159         Connect( wxEVT_PAINT, wxPaintEventHandler(wxBitmapCanvas::OnPaint) );
1160     }
1161
1162     void OnPaint( wxPaintEvent &WXUNUSED(event) )
1163     {
1164         wxPaintDC dc(this);
1165         dc.DrawBitmap( m_bitmap, 0, 0);
1166     }
1167
1168     wxBitmap m_bitmap;
1169 };
1170
1171 class wxDataViewDropSource: public wxDropSource
1172 {
1173 public:
1174     wxDataViewDropSource( wxDataViewMainWindow *win, unsigned int row ) :
1175         wxDropSource( win )
1176     {
1177         m_win = win;
1178         m_row = row;
1179         m_hint = NULL;
1180     }
1181
1182     ~wxDataViewDropSource()
1183     {
1184         delete m_hint;
1185     }
1186
1187     virtual bool GiveFeedback( wxDragResult WXUNUSED(effect) )
1188     {
1189         wxPoint pos = wxGetMousePosition();
1190
1191         if (!m_hint)
1192         {
1193             int liney = m_win->GetLineStart( m_row );
1194             int linex = 0;
1195             m_win->GetOwner()->CalcUnscrolledPosition( 0, liney, NULL, &liney );
1196             m_win->ClientToScreen( &linex, &liney );
1197             m_dist_x = pos.x - linex;
1198             m_dist_y = pos.y - liney;
1199
1200             int indent = 0;
1201             wxBitmap ib = m_win->CreateItemBitmap( m_row, indent );
1202             m_dist_x -= indent;
1203             m_hint = new wxFrame( m_win->GetParent(), wxID_ANY, wxEmptyString,
1204                                         wxPoint(pos.x - m_dist_x, pos.y + 5 ),
1205                                         ib.GetSize(),
1206                                         wxFRAME_TOOL_WINDOW |
1207                                         wxFRAME_FLOAT_ON_PARENT |
1208                                         wxFRAME_NO_TASKBAR |
1209                                         wxNO_BORDER );
1210             new wxBitmapCanvas( m_hint, ib, ib.GetSize() );
1211             m_hint->Show();
1212         }
1213         else
1214         {
1215             m_hint->Move( pos.x - m_dist_x, pos.y + 5  );
1216             m_hint->SetTransparent( 128 );
1217         }
1218
1219         return false;
1220     }
1221
1222     wxDataViewMainWindow   *m_win;
1223     unsigned int            m_row;
1224     wxFrame                *m_hint;
1225     int m_dist_x,m_dist_y;
1226 };
1227
1228
1229 class wxDataViewDropTarget: public wxDropTarget
1230 {
1231 public:
1232     wxDataViewDropTarget( wxDataObject *obj, wxDataViewMainWindow *win ) :
1233         wxDropTarget( obj )
1234     {
1235         m_win = win;
1236     }
1237
1238     virtual wxDragResult OnDragOver( wxCoord x, wxCoord y, wxDragResult def )
1239     {
1240         wxDataFormat format = GetMatchingPair();
1241         if (format == wxDF_INVALID)
1242             return wxDragNone;
1243         return m_win->OnDragOver( format, x, y, def);
1244     }
1245
1246     virtual bool OnDrop( wxCoord x, wxCoord y )
1247     {
1248         wxDataFormat format = GetMatchingPair();
1249         if (format == wxDF_INVALID)
1250             return false;
1251         return m_win->OnDrop( format, x, y );
1252     }
1253
1254     virtual wxDragResult OnData( wxCoord x, wxCoord y, wxDragResult def )
1255     {
1256         wxDataFormat format = GetMatchingPair();
1257         if (format == wxDF_INVALID)
1258             return wxDragNone;
1259         if (!GetData())
1260             return wxDragNone;
1261         return m_win->OnData( format, x, y, def );
1262     }
1263
1264     virtual void OnLeave()
1265         { m_win->OnLeave(); }
1266
1267     wxDataViewMainWindow   *m_win;
1268 };
1269
1270 #endif // wxUSE_DRAG_AND_DROP
1271
1272 //-----------------------------------------------------------------------------
1273 // wxDataViewRenameTimer
1274 //-----------------------------------------------------------------------------
1275
1276 wxDataViewRenameTimer::wxDataViewRenameTimer( wxDataViewMainWindow *owner )
1277 {
1278     m_owner = owner;
1279 }
1280
1281 void wxDataViewRenameTimer::Notify()
1282 {
1283     m_owner->OnRenameTimer();
1284 }
1285
1286 //-----------------------------------------------------------------------------
1287 // wxDataViewMainWindow
1288 //-----------------------------------------------------------------------------
1289
1290 // The tree building helper, declared firstly
1291 static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
1292                              wxDataViewTreeNode * node);
1293
1294 int LINKAGEMODE wxDataViewSelectionCmp( unsigned int row1, unsigned int row2 )
1295 {
1296     if (row1 > row2) return 1;
1297     if (row1 == row2) return 0;
1298     return -1;
1299 }
1300
1301 IMPLEMENT_ABSTRACT_CLASS(wxDataViewMainWindow, wxWindow)
1302
1303 BEGIN_EVENT_TABLE(wxDataViewMainWindow,wxWindow)
1304     EVT_PAINT         (wxDataViewMainWindow::OnPaint)
1305     EVT_MOUSE_EVENTS  (wxDataViewMainWindow::OnMouse)
1306     EVT_SET_FOCUS     (wxDataViewMainWindow::OnSetFocus)
1307     EVT_KILL_FOCUS    (wxDataViewMainWindow::OnKillFocus)
1308     EVT_CHAR          (wxDataViewMainWindow::OnChar)
1309 END_EVENT_TABLE()
1310
1311 wxDataViewMainWindow::wxDataViewMainWindow( wxDataViewCtrl *parent, wxWindowID id,
1312     const wxPoint &pos, const wxSize &size, const wxString &name ) :
1313     wxWindow( parent, id, pos, size, wxWANTS_CHARS|wxBORDER_NONE, name ),
1314     m_selection( wxDataViewSelectionCmp )
1315
1316 {
1317     SetOwner( parent );
1318
1319     m_lastOnSame = false;
1320     m_renameTimer = new wxDataViewRenameTimer( this );
1321
1322     // TODO: user better initial values/nothing selected
1323     m_currentCol = NULL;
1324     m_currentRow = 0;
1325
1326     m_lineHeight = wxMax( 17, GetCharHeight() + 2 ); // 17 = mini icon height + 1
1327
1328 #if wxUSE_DRAG_AND_DROP
1329     m_dragCount = 0;
1330     m_dragStart = wxPoint(0,0);
1331
1332     m_dragEnabled = false;
1333     m_dropEnabled = false;
1334     m_dropHint = false;
1335     m_dropHintLine = (unsigned int) -1;
1336 #endif // wxUSE_DRAG_AND_DROP
1337
1338     m_lineLastClicked = (unsigned int) -1;
1339     m_lineBeforeLastClicked = (unsigned int) -1;
1340     m_lineSelectSingleOnUp = (unsigned int) -1;
1341
1342     m_hasFocus = false;
1343
1344     SetBackgroundColour( *wxWHITE );
1345
1346     SetBackgroundStyle(wxBG_STYLE_CUSTOM);
1347
1348     m_penRule = wxPen(GetRuleColour());
1349
1350     // compose a pen whichcan draw black lines
1351     // TODO: maybe there is something system colour to use
1352     m_penExpander = wxPen(wxColour(0,0,0));
1353
1354     m_root = new wxDataViewTreeNode( NULL );
1355     m_root->SetHasChildren(true);
1356
1357     // Make m_count = -1 will cause the class recaculate the real displaying number of rows.
1358     m_count = -1;
1359     m_underMouse = NULL;
1360     UpdateDisplay();
1361 }
1362
1363 wxDataViewMainWindow::~wxDataViewMainWindow()
1364 {
1365     DestroyTree();
1366     delete m_renameTimer;
1367 }
1368
1369
1370 #if wxUSE_DRAG_AND_DROP
1371 bool wxDataViewMainWindow::EnableDragSource( const wxDataFormat &format )
1372 {
1373     m_dragFormat = format;
1374     m_dragEnabled = format != wxDF_INVALID;
1375
1376     return true;
1377 }
1378
1379 bool wxDataViewMainWindow::EnableDropTarget( const wxDataFormat &format )
1380 {
1381     m_dropFormat = format;
1382     m_dropEnabled = format != wxDF_INVALID;
1383
1384     if (m_dropEnabled)
1385         SetDropTarget( new wxDataViewDropTarget( new wxCustomDataObject( format ), this ) );
1386
1387     return true;
1388 }
1389
1390 void wxDataViewMainWindow::RemoveDropHint()
1391 {
1392     if (m_dropHint)
1393     {
1394             m_dropHint = false;
1395             RefreshRow( m_dropHintLine );
1396             m_dropHintLine = (unsigned int) -1;
1397     }
1398 }
1399
1400 wxDragResult wxDataViewMainWindow::OnDragOver( wxDataFormat format, wxCoord x,
1401                                                wxCoord y, wxDragResult def )
1402 {
1403     int xx = x;
1404     int yy = y;
1405     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1406     unsigned int row = GetLineAt( yy );
1407
1408     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1409     {
1410         RemoveDropHint();
1411         return wxDragNone;
1412     }
1413
1414     wxDataViewItem item = GetItemByRow( row );
1415
1416     wxDataViewModel *model = GetOwner()->GetModel();
1417
1418     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, m_owner->GetId() );
1419     event.SetEventObject( m_owner );
1420     event.SetItem( item );
1421     event.SetModel( model );
1422     event.SetDataFormat( format );
1423     if (!m_owner->HandleWindowEvent( event ))
1424     {
1425         RemoveDropHint();
1426         return wxDragNone;
1427     }
1428
1429     if (!event.IsAllowed())
1430     {
1431         RemoveDropHint();
1432         return wxDragNone;
1433     }
1434
1435
1436     if (m_dropHint && (row != m_dropHintLine))
1437         RefreshRow( m_dropHintLine );
1438     m_dropHint = true;
1439     m_dropHintLine = row;
1440     RefreshRow( row );
1441
1442     return def;
1443 }
1444
1445 bool wxDataViewMainWindow::OnDrop( wxDataFormat format, wxCoord x, wxCoord y )
1446 {
1447     RemoveDropHint();
1448
1449     int xx = x;
1450     int yy = y;
1451     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1452     unsigned int row = GetLineAt( yy );
1453
1454     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1455         return false;
1456
1457     wxDataViewItem item = GetItemByRow( row );
1458
1459     wxDataViewModel *model = GetOwner()->GetModel();
1460
1461     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, m_owner->GetId() );
1462     event.SetEventObject( m_owner );
1463     event.SetItem( item );
1464     event.SetModel( model );
1465     event.SetDataFormat( format );
1466     if (!m_owner->HandleWindowEvent( event ))
1467         return false;
1468
1469     if (!event.IsAllowed())
1470         return false;
1471
1472     return true;
1473 }
1474
1475 wxDragResult wxDataViewMainWindow::OnData( wxDataFormat format, wxCoord x, wxCoord y,
1476                                            wxDragResult def )
1477 {
1478     int xx = x;
1479     int yy = y;
1480     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1481     unsigned int row = GetLineAt( yy );
1482
1483     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1484         return wxDragNone;
1485
1486     wxDataViewItem item = GetItemByRow( row );
1487
1488     wxDataViewModel *model = GetOwner()->GetModel();
1489
1490     wxCustomDataObject *obj = (wxCustomDataObject *) GetDropTarget()->GetDataObject();
1491
1492     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP, m_owner->GetId() );
1493     event.SetEventObject( m_owner );
1494     event.SetItem( item );
1495     event.SetModel( model );
1496     event.SetDataFormat( format );
1497     event.SetDataSize( obj->GetSize() );
1498     event.SetDataBuffer( obj->GetData() );
1499     if (!m_owner->HandleWindowEvent( event ))
1500         return wxDragNone;
1501
1502     if (!event.IsAllowed())
1503         return wxDragNone;
1504
1505     return def;
1506 }
1507
1508 void wxDataViewMainWindow::OnLeave()
1509 {
1510     RemoveDropHint();
1511 }
1512
1513 wxBitmap wxDataViewMainWindow::CreateItemBitmap( unsigned int row, int &indent )
1514 {
1515     int height = GetLineHeight( row );
1516     int width = 0;
1517     unsigned int cols = GetOwner()->GetColumnCount();
1518     unsigned int col;
1519     for (col = 0; col < cols; col++)
1520     {
1521         wxDataViewColumn *column = GetOwner()->GetColumnAt(col);
1522         if (column->IsHidden())
1523             continue;      // skip it!
1524         width += column->GetWidth();
1525     }
1526
1527     indent = 0;
1528     if (!IsList())
1529     {
1530         wxDataViewTreeNode *node = GetTreeNodeByRow(row);
1531         indent = GetOwner()->GetIndent() * node->GetIndentLevel();
1532         indent = indent + m_lineHeight;
1533             // try to use the m_lineHeight as the expander space
1534
1535         if(!node->HasChildren())
1536             delete node;
1537     }
1538     width -= indent;
1539
1540     wxBitmap bitmap( width, height );
1541     wxMemoryDC dc( bitmap );
1542     dc.SetFont( GetFont() );
1543     dc.SetPen( *wxBLACK_PEN );
1544     dc.SetBrush( *wxWHITE_BRUSH );
1545     dc.DrawRectangle( 0,0,width,height );
1546
1547     wxDataViewModel *model = m_owner->GetModel();
1548
1549     wxDataViewColumn *expander = GetOwner()->GetExpanderColumn();
1550     if (!expander)
1551     {
1552         // TODO-RTL: last column for RTL support
1553         expander = GetOwner()->GetColumnAt( 0 );
1554         GetOwner()->SetExpanderColumn(expander);
1555     }
1556
1557
1558     int x = 0;
1559     for (col = 0; col < cols; col++)
1560     {
1561         wxDataViewColumn *column = GetOwner()->GetColumnAt( col );
1562         wxDataViewRenderer *cell = column->GetRenderer();
1563
1564         if (column->IsHidden())
1565             continue;       // skip it!
1566
1567         width = column->GetWidth();
1568
1569         if (column == expander)
1570             width -= indent;
1571
1572         wxDataViewItem item = GetItemByRow( row );
1573         cell->PrepareForItem(model, item, column->GetModelColumn());
1574
1575         wxRect item_rect(x, 0, width, height);
1576         item_rect.Deflate(PADDING_RIGHTLEFT, 0);
1577
1578         // dc.SetClippingRegion( item_rect );
1579         cell->WXCallRender(item_rect, &dc, 0);
1580         // dc.DestroyClippingRegion();
1581
1582         x += width;
1583     }
1584
1585     return bitmap;
1586 }
1587
1588 #endif // wxUSE_DRAG_AND_DROP
1589
1590
1591 void wxDataViewMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
1592 {
1593     wxDataViewModel *model = GetOwner()->GetModel();
1594     wxAutoBufferedPaintDC dc( this );
1595
1596 #ifdef __WXMSW__
1597     dc.SetBrush(GetOwner()->GetBackgroundColour());
1598     dc.SetPen( *wxTRANSPARENT_PEN );
1599     dc.DrawRectangle(GetClientSize());
1600 #endif
1601
1602     if ( IsEmpty() )
1603     {
1604         // No items to draw.
1605         return;
1606     }
1607
1608     // prepare the DC
1609     GetOwner()->PrepareDC( dc );
1610     dc.SetFont( GetFont() );
1611
1612     wxRect update = GetUpdateRegion().GetBox();
1613     m_owner->CalcUnscrolledPosition( update.x, update.y, &update.x, &update.y );
1614
1615     // compute which items needs to be redrawn
1616     unsigned int item_start = GetLineAt( wxMax(0,update.y) );
1617     unsigned int item_count =
1618         wxMin( (int)(  GetLineAt( wxMax(0,update.y+update.height) ) - item_start + 1),
1619             (int)(GetRowCount( ) - item_start));
1620     unsigned int item_last = item_start + item_count;
1621
1622     // Send the event to wxDataViewCtrl itself.
1623     wxWindow * const parent = GetParent();
1624     wxDataViewEvent cache_event(wxEVT_COMMAND_DATAVIEW_CACHE_HINT, parent->GetId());
1625     cache_event.SetEventObject(parent);
1626     cache_event.SetCache(item_start, item_last - 1);
1627     parent->ProcessWindowEvent(cache_event);
1628
1629     // compute which columns needs to be redrawn
1630     unsigned int cols = GetOwner()->GetColumnCount();
1631     if ( !cols )
1632     {
1633         // we assume that we have at least one column below and painting an
1634         // empty control is unnecessary anyhow
1635         return;
1636     }
1637
1638     unsigned int col_start = 0;
1639     unsigned int x_start;
1640     for (x_start = 0; col_start < cols; col_start++)
1641     {
1642         wxDataViewColumn *col = GetOwner()->GetColumnAt(col_start);
1643         if (col->IsHidden())
1644             continue;      // skip it!
1645
1646         unsigned int w = col->GetWidth();
1647         if (x_start+w >= (unsigned int)update.x)
1648             break;
1649
1650         x_start += w;
1651     }
1652
1653     unsigned int col_last = col_start;
1654     unsigned int x_last = x_start;
1655     for (; col_last < cols; col_last++)
1656     {
1657         wxDataViewColumn *col = GetOwner()->GetColumnAt(col_last);
1658         if (col->IsHidden())
1659             continue;      // skip it!
1660
1661         if (x_last > (unsigned int)update.GetRight())
1662             break;
1663
1664         x_last += col->GetWidth();
1665     }
1666
1667     // Draw horizontal rules if required
1668     if ( m_owner->HasFlag(wxDV_HORIZ_RULES) )
1669     {
1670         dc.SetPen(m_penRule);
1671         dc.SetBrush(*wxTRANSPARENT_BRUSH);
1672
1673         for (unsigned int i = item_start; i <= item_last; i++)
1674         {
1675             int y = GetLineStart( i );
1676             dc.DrawLine(x_start, y, x_last, y);
1677         }
1678     }
1679
1680     // Draw vertical rules if required
1681     if ( m_owner->HasFlag(wxDV_VERT_RULES) )
1682     {
1683         dc.SetPen(m_penRule);
1684         dc.SetBrush(*wxTRANSPARENT_BRUSH);
1685
1686         // NB: Vertical rules are drawn in the last pixel of a column so that
1687         //     they align perfectly with native MSW wxHeaderCtrl as well as for
1688         //     consistency with MSW native list control. There's no vertical
1689         //     rule at the most-left side of the control.
1690
1691         int x = x_start - 1;
1692         for (unsigned int i = col_start; i < col_last; i++)
1693         {
1694             wxDataViewColumn *col = GetOwner()->GetColumnAt(i);
1695             if (col->IsHidden())
1696                 continue;       // skip it
1697
1698             x += col->GetWidth();
1699
1700             dc.DrawLine(x, GetLineStart( item_start ),
1701                         x, GetLineStart( item_last ) );
1702         }
1703     }
1704
1705     // redraw the background for the items which are selected/current
1706     for (unsigned int item = item_start; item < item_last; item++)
1707     {
1708         bool selected = m_selection.Index( item ) != wxNOT_FOUND;
1709         if (selected || item == m_currentRow)
1710         {
1711             int flags = selected ? (int)wxCONTROL_SELECTED : 0;
1712             if (item == m_currentRow)
1713                 flags |= wxCONTROL_CURRENT;
1714             if (m_hasFocus)
1715                 flags |= wxCONTROL_FOCUSED;
1716
1717             wxRect rect( x_start, GetLineStart( item ),
1718                          x_last - x_start, GetLineHeight( item ) );
1719             wxRendererNative::Get().DrawItemSelectionRect
1720                                 (
1721                                     this,
1722                                     dc,
1723                                     rect,
1724                                     flags
1725                                 );
1726         }
1727     }
1728
1729 #if wxUSE_DRAG_AND_DROP
1730     if (m_dropHint)
1731     {
1732         wxRect rect( x_start, GetLineStart( m_dropHintLine ),
1733                      x_last - x_start, GetLineHeight( m_dropHintLine ) );
1734         dc.SetPen( *wxBLACK_PEN );
1735         dc.SetBrush( *wxTRANSPARENT_BRUSH );
1736         dc.DrawRectangle( rect );
1737     }
1738 #endif // wxUSE_DRAG_AND_DROP
1739
1740     wxDataViewColumn *expander = GetOwner()->GetExpanderColumn();
1741     if (!expander)
1742     {
1743         // TODO-RTL: last column for RTL support
1744         expander = GetOwner()->GetColumnAt( 0 );
1745         GetOwner()->SetExpanderColumn(expander);
1746     }
1747
1748     // redraw all cells for all rows which must be repainted and all columns
1749     wxRect cell_rect;
1750     cell_rect.x = x_start;
1751     for (unsigned int i = col_start; i < col_last; i++)
1752     {
1753         wxDataViewColumn *col = GetOwner()->GetColumnAt( i );
1754         wxDataViewRenderer *cell = col->GetRenderer();
1755         cell_rect.width = col->GetWidth();
1756
1757         if ( col->IsHidden() || cell_rect.width <= 0 )
1758             continue;       // skip it!
1759
1760         for (unsigned int item = item_start; item < item_last; item++)
1761         {
1762             // get the cell value and set it into the renderer
1763             wxDataViewTreeNode *node = NULL;
1764             wxDataViewItem dataitem;
1765
1766             if (!IsVirtualList())
1767             {
1768                 node = GetTreeNodeByRow(item);
1769                 if( node == NULL )
1770                     continue;
1771
1772                 dataitem = node->GetItem();
1773
1774                 if ((i > 0) && model->IsContainer(dataitem) &&
1775                     !model->HasContainerColumns(dataitem))
1776                     continue;
1777             }
1778             else
1779             {
1780                 dataitem = wxDataViewItem( wxUIntToPtr(item+1) );
1781             }
1782
1783             cell->PrepareForItem(model, dataitem, col->GetModelColumn());
1784
1785             // update cell_rect
1786             cell_rect.y = GetLineStart( item );
1787             cell_rect.height = GetLineHeight( item );
1788
1789             // deal with the expander
1790             int indent = 0;
1791             if ((!IsList()) && (col == expander))
1792             {
1793                 // Calculate the indent first
1794                 indent = GetOwner()->GetIndent() * node->GetIndentLevel();
1795
1796                 // we reserve m_lineHeight of horizontal space for the expander
1797                 // but leave EXPANDER_MARGIN around the expander itself
1798                 int exp_x = cell_rect.x + indent + EXPANDER_MARGIN;
1799
1800                 indent += m_lineHeight;
1801
1802                 // draw expander if needed and visible
1803                 if ( node->HasChildren() && exp_x < cell_rect.GetRight() )
1804                 {
1805                     dc.SetPen( m_penExpander );
1806                     dc.SetBrush( wxNullBrush );
1807
1808                     int exp_size = m_lineHeight - 2*EXPANDER_MARGIN;
1809                     int exp_y = cell_rect.y + (cell_rect.height - exp_size)/2
1810                                    + EXPANDER_MARGIN - EXPANDER_OFFSET;
1811
1812                     const wxRect rect(exp_x, exp_y, exp_size, exp_size);
1813
1814                     int flag = 0;
1815                     if ( m_underMouse == node )
1816                         flag |= wxCONTROL_CURRENT;
1817                     if ( node->IsOpen() )
1818                         flag |= wxCONTROL_EXPANDED;
1819
1820                     // ensure that we don't overflow the cell (which might
1821                     // happen if the column is very narrow)
1822                     wxDCClipper clip(dc, cell_rect);
1823
1824                     wxRendererNative::Get().DrawTreeItemButton( this, dc, rect, flag);
1825                 }
1826
1827                 // force the expander column to left-center align
1828                 cell->SetAlignment( wxALIGN_CENTER_VERTICAL );
1829             }
1830             if (node && !node->HasChildren())
1831             {
1832                 // Yes, if the node does not have any child, it must be a leaf which
1833                 // mean that it is a temporarily created by GetTreeNodeByRow
1834                 wxDELETE(node);
1835             }
1836
1837             wxRect item_rect = cell_rect;
1838             item_rect.Deflate(PADDING_RIGHTLEFT, 0);
1839
1840             // account for the tree indent (harmless if we're not indented)
1841             item_rect.x += indent;
1842             item_rect.width -= indent;
1843
1844             if ( item_rect.width <= 0 )
1845                 continue;
1846
1847             int state = 0;
1848             if (m_hasFocus && (m_selection.Index(item) != wxNOT_FOUND))
1849                 state |= wxDATAVIEW_CELL_SELECTED;
1850
1851             // TODO: it would be much more efficient to create a clipping
1852             //       region for the entire column being rendered (in the OnPaint
1853             //       of wxDataViewMainWindow) instead of a single clip region for
1854             //       each cell. However it would mean that each renderer should
1855             //       respect the given wxRect's top & bottom coords, eventually
1856             //       violating only the left & right coords - however the user can
1857             //       make its own renderer and thus we cannot be sure of that.
1858             wxDCClipper clip(dc, item_rect);
1859
1860             cell->WXCallRender(item_rect, &dc, state);
1861         }
1862
1863         cell_rect.x += cell_rect.width;
1864     }
1865 }
1866
1867 void wxDataViewMainWindow::OnRenameTimer()
1868 {
1869     // We have to call this here because changes may just have
1870     // been made and no screen update taken place.
1871     if ( m_dirty )
1872     {
1873         // TODO: use wxTheApp->SafeYieldFor(NULL, wxEVT_CATEGORY_UI) instead
1874         //       (needs to be tested!)
1875         wxSafeYield();
1876     }
1877
1878     wxDataViewItem item = GetItemByRow( m_currentRow );
1879
1880     wxRect labelRect = GetItemRect(item, m_currentCol);
1881
1882     m_currentCol->GetRenderer()->StartEditing( item, labelRect );
1883 }
1884
1885 //-----------------------------------------------------------------------------
1886 // Helper class for do operation on the tree node
1887 //-----------------------------------------------------------------------------
1888 class DoJob
1889 {
1890 public:
1891     DoJob() { }
1892     virtual ~DoJob() { }
1893
1894     // The return value control how the tree-walker tranverse the tree
1895     // 0: Job done, stop tranverse and return
1896     // 1: Ignore the current node's subtree and continue
1897     // 2: Job not done, continue
1898     enum  { OK = 0 , IGR = 1, CONT = 2 };
1899     virtual int operator() ( wxDataViewTreeNode * node ) = 0;
1900     virtual int operator() ( void * n ) = 0;
1901 };
1902
1903 bool Walker( wxDataViewTreeNode * node, DoJob & func )
1904 {
1905     if( node==NULL )
1906         return false;
1907
1908     switch( func( node ) )
1909     {
1910         case DoJob::OK :
1911             return true;
1912         case DoJob::IGR:
1913             return false;
1914         case DoJob::CONT:
1915         default:
1916             ;
1917     }
1918
1919     const wxDataViewTreeNodes& nodes = node->GetNodes();
1920     const wxDataViewTreeLeaves& leaves = node->GetChildren();
1921
1922     int len_nodes = nodes.GetCount();
1923     int len = leaves.GetCount();
1924     int i = 0, nodes_i = 0;
1925
1926     for(; i < len; i ++ )
1927     {
1928         void * n = leaves[i];
1929         if( nodes_i < len_nodes && n == nodes[nodes_i]->GetItem().GetID() )
1930         {
1931             wxDataViewTreeNode * nd = nodes[nodes_i];
1932             nodes_i++;
1933
1934             if( Walker( nd , func ) )
1935                 return true;
1936
1937         }
1938         else
1939             switch( func( n ) )
1940             {
1941                 case DoJob::OK :
1942                     return true;
1943                 case DoJob::IGR:
1944                     continue;
1945                 case DoJob::CONT:
1946                 default:
1947                 ;
1948             }
1949     }
1950     return false;
1951 }
1952
1953 bool wxDataViewMainWindow::ItemAdded(const wxDataViewItem & parent, const wxDataViewItem & item)
1954 {
1955     GetOwner()->InvalidateColBestWidths();
1956
1957     if (IsVirtualList())
1958     {
1959         wxDataViewVirtualListModel *list_model =
1960             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
1961         m_count = list_model->GetCount();
1962         UpdateDisplay();
1963         return true;
1964     }
1965
1966     SortPrepare();
1967
1968     wxDataViewTreeNode * node;
1969     node = FindNode(parent);
1970
1971     if( node == NULL )
1972         return false;
1973
1974     node->SetHasChildren( true );
1975
1976     if( g_model->IsContainer( item ) )
1977     {
1978         wxDataViewTreeNode * newnode = new wxDataViewTreeNode( node );
1979         newnode->SetItem(item);
1980         newnode->SetHasChildren( true );
1981         node->AddNode( newnode);
1982     }
1983     else
1984         node->AddLeaf( item.GetID() );
1985
1986     node->ChangeSubTreeCount(1);
1987
1988     m_count = -1;
1989     UpdateDisplay();
1990
1991     return true;
1992 }
1993
1994 static void DestroyTreeHelper( wxDataViewTreeNode * node);
1995
1996 bool wxDataViewMainWindow::ItemDeleted(const wxDataViewItem& parent,
1997                                        const wxDataViewItem& item)
1998 {
1999     GetOwner()->InvalidateColBestWidths();
2000
2001     if (IsVirtualList())
2002     {
2003         wxDataViewVirtualListModel *list_model =
2004             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
2005         m_count = list_model->GetCount();
2006
2007         if( m_currentRow > GetRowCount() )
2008             m_currentRow = m_count - 1;
2009
2010         // TODO: why empty the entire selection?
2011         m_selection.Empty();
2012
2013         UpdateDisplay();
2014
2015         return true;
2016     }
2017
2018     wxDataViewTreeNode * node = FindNode(parent);
2019
2020     // Notice that it is possible that the item being deleted is not in the
2021     // tree at all, for example we could be deleting a never shown (because
2022     // collapsed) item in a tree model. So it's not an error if we don't know
2023     // about this item, just return without doing anything then.
2024     if ( !node || node->GetChildren().Index(item.GetID()) == wxNOT_FOUND )
2025         return false;
2026
2027     int sub = -1;
2028     node->GetChildren().Remove( item.GetID() );
2029     // Manipolate selection
2030     if( m_selection.GetCount() > 1 )
2031     {
2032         m_selection.Empty();
2033     }
2034     bool isContainer = false;
2035     wxDataViewTreeNodes nds = node->GetNodes();
2036     for (size_t i = 0; i < nds.GetCount(); i ++)
2037     {
2038         if (nds[i]->GetItem() == item)
2039         {
2040             isContainer = true;
2041             break;
2042         }
2043     }
2044     if( isContainer )
2045     {
2046         wxDataViewTreeNode * n = NULL;
2047         wxDataViewTreeNodes nodes = node->GetNodes();
2048         int len = nodes.GetCount();
2049         for( int i = 0; i < len; i ++)
2050         {
2051             if( nodes[i]->GetItem() == item )
2052             {
2053                 n = nodes[i];
2054                 break;
2055             }
2056         }
2057
2058         wxCHECK_MSG( n != NULL, false, "item not found" );
2059
2060         node->GetNodes().Remove( n );
2061         sub -= n->GetSubTreeCount();
2062         ::DestroyTreeHelper(n);
2063     }
2064     // Make the row number invalid and get a new valid one when user call GetRowCount
2065     m_count = -1;
2066     node->ChangeSubTreeCount(sub);
2067
2068     // Change the current row to the last row if the current exceed the max row number
2069     if( m_currentRow > GetRowCount() )
2070         m_currentRow = m_count - 1;
2071
2072     UpdateDisplay();
2073
2074     return true;
2075 }
2076
2077 bool wxDataViewMainWindow::ItemChanged(const wxDataViewItem & item)
2078 {
2079     GetOwner()->InvalidateColBestWidths();
2080
2081     SortPrepare();
2082     g_model->Resort();
2083
2084     // Send event
2085     wxWindow *parent = GetParent();
2086     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
2087     le.SetEventObject(parent);
2088     le.SetModel(GetOwner()->GetModel());
2089     le.SetItem(item);
2090     parent->GetEventHandler()->ProcessEvent(le);
2091
2092     return true;
2093 }
2094
2095 bool wxDataViewMainWindow::ValueChanged( const wxDataViewItem & item, unsigned int model_column )
2096 {
2097     int view_column = -1;
2098     unsigned int n_col = m_owner->GetColumnCount();
2099     for (unsigned i = 0; i < n_col; i++)
2100     {
2101         wxDataViewColumn *column = m_owner->GetColumn( i );
2102         if (column->GetModelColumn() == model_column)
2103         {
2104             view_column = (int) i;
2105             break;
2106         }
2107     }
2108     if (view_column == -1)
2109         return false;
2110
2111     GetOwner()->InvalidateColBestWidth(view_column);
2112
2113     // NOTE: to be valid, we cannot use e.g. INT_MAX - 1
2114 /*#define MAX_VIRTUAL_WIDTH       100000
2115
2116     wxRect rect( 0, row*m_lineHeight, MAX_VIRTUAL_WIDTH, m_lineHeight );
2117     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2118     Refresh( true, &rect );
2119
2120     return true;
2121 */
2122     SortPrepare();
2123     g_model->Resort();
2124
2125     // Send event
2126     wxWindow *parent = GetParent();
2127     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
2128     le.SetEventObject(parent);
2129     le.SetModel(GetOwner()->GetModel());
2130     le.SetItem(item);
2131     le.SetColumn(view_column);
2132     le.SetDataViewColumn(GetOwner()->GetColumn(view_column));
2133     parent->GetEventHandler()->ProcessEvent(le);
2134
2135     return true;
2136 }
2137
2138 bool wxDataViewMainWindow::Cleared()
2139 {
2140     GetOwner()->InvalidateColBestWidths();
2141
2142     DestroyTree();
2143     m_selection.Clear();
2144
2145     SortPrepare();
2146     BuildTree( GetOwner()->GetModel() );
2147
2148     UpdateDisplay();
2149
2150     return true;
2151 }
2152
2153 void wxDataViewMainWindow::UpdateDisplay()
2154 {
2155     m_dirty = true;
2156     m_underMouse = NULL;
2157 }
2158
2159 void wxDataViewMainWindow::OnInternalIdle()
2160 {
2161     wxWindow::OnInternalIdle();
2162
2163     if (m_dirty)
2164     {
2165         RecalculateDisplay();
2166         m_dirty = false;
2167     }
2168 }
2169
2170 void wxDataViewMainWindow::RecalculateDisplay()
2171 {
2172     wxDataViewModel *model = GetOwner()->GetModel();
2173     if (!model)
2174     {
2175         Refresh();
2176         return;
2177     }
2178
2179     int width = GetEndOfLastCol();
2180     int height = GetLineStart( GetRowCount() );
2181
2182     SetVirtualSize( width, height );
2183     GetOwner()->SetScrollRate( 10, m_lineHeight );
2184
2185     Refresh();
2186 }
2187
2188 void wxDataViewMainWindow::ScrollWindow( int dx, int dy, const wxRect *rect )
2189 {
2190     m_underMouse = NULL;
2191
2192     wxWindow::ScrollWindow( dx, dy, rect );
2193
2194     if (GetOwner()->m_headerArea)
2195         GetOwner()->m_headerArea->ScrollWindow( dx, 0 );
2196 }
2197
2198 void wxDataViewMainWindow::ScrollTo( int rows, int column )
2199 {
2200     m_underMouse = NULL;
2201
2202     int x, y;
2203     m_owner->GetScrollPixelsPerUnit( &x, &y );
2204     int sy = GetLineStart( rows )/y;
2205     int sx = 0;
2206     if( column != -1 )
2207     {
2208         wxRect rect = GetClientRect();
2209         int colnum = 0;
2210         int x_start, w = 0;
2211         int xx, yy, xe;
2212         m_owner->CalcUnscrolledPosition( rect.x, rect.y, &xx, &yy );
2213         for (x_start = 0; colnum < column; colnum++)
2214         {
2215             wxDataViewColumn *col = GetOwner()->GetColumnAt(colnum);
2216             if (col->IsHidden())
2217                 continue;      // skip it!
2218
2219             w = col->GetWidth();
2220             x_start += w;
2221         }
2222
2223         int x_end = x_start + w;
2224         xe = xx + rect.width;
2225         if( x_end > xe )
2226         {
2227             sx = ( xx + x_end - xe )/x;
2228         }
2229         if( x_start < xx )
2230         {
2231             sx = x_start/x;
2232         }
2233     }
2234     m_owner->Scroll( sx, sy );
2235 }
2236
2237 int wxDataViewMainWindow::GetCountPerPage() const
2238 {
2239     wxSize size = GetClientSize();
2240     return size.y / m_lineHeight;
2241 }
2242
2243 int wxDataViewMainWindow::GetEndOfLastCol() const
2244 {
2245     int width = 0;
2246     unsigned int i;
2247     for (i = 0; i < GetOwner()->GetColumnCount(); i++)
2248     {
2249         const wxDataViewColumn *c =
2250             const_cast<wxDataViewCtrl*>(GetOwner())->GetColumnAt( i );
2251
2252         if (!c->IsHidden())
2253             width += c->GetWidth();
2254     }
2255     return width;
2256 }
2257
2258 unsigned int wxDataViewMainWindow::GetFirstVisibleRow() const
2259 {
2260     int x = 0;
2261     int y = 0;
2262     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
2263
2264     return GetLineAt( y );
2265 }
2266
2267 unsigned int wxDataViewMainWindow::GetLastVisibleRow()
2268 {
2269     wxSize client_size = GetClientSize();
2270     m_owner->CalcUnscrolledPosition( client_size.x, client_size.y,
2271                                     &client_size.x, &client_size.y );
2272
2273     // we should deal with the pixel here
2274     unsigned int row = GetLineAt(client_size.y) - 1;
2275
2276     return wxMin( GetRowCount()-1, row );
2277 }
2278
2279 unsigned int wxDataViewMainWindow::GetRowCount()
2280 {
2281     if ( m_count == -1 )
2282     {
2283         m_count = RecalculateCount();
2284         UpdateDisplay();
2285     }
2286     return m_count;
2287 }
2288
2289 void wxDataViewMainWindow::ChangeCurrentRow( unsigned int row )
2290 {
2291     m_currentRow = row;
2292
2293     // send event
2294 }
2295
2296 void wxDataViewMainWindow::SelectAllRows( bool on )
2297 {
2298     if (IsEmpty())
2299         return;
2300
2301     if (on)
2302     {
2303         m_selection.Clear();
2304         for (unsigned int i = 0; i < GetRowCount(); i++)
2305             m_selection.Add( i );
2306         Refresh();
2307     }
2308     else
2309     {
2310         unsigned int first_visible = GetFirstVisibleRow();
2311         unsigned int last_visible = GetLastVisibleRow();
2312         unsigned int i;
2313         for (i = 0; i < m_selection.GetCount(); i++)
2314         {
2315             unsigned int row = m_selection[i];
2316             if ((row >= first_visible) && (row <= last_visible))
2317                 RefreshRow( row );
2318         }
2319         m_selection.Clear();
2320     }
2321 }
2322
2323 void wxDataViewMainWindow::SelectRow( unsigned int row, bool on )
2324 {
2325     if (m_selection.Index( row ) == wxNOT_FOUND)
2326     {
2327         if (on)
2328         {
2329             m_selection.Add( row );
2330             RefreshRow( row );
2331         }
2332     }
2333     else
2334     {
2335         if (!on)
2336         {
2337             m_selection.Remove( row );
2338             RefreshRow( row );
2339         }
2340     }
2341 }
2342
2343 void wxDataViewMainWindow::SelectRows( unsigned int from, unsigned int to, bool on )
2344 {
2345     if (from > to)
2346     {
2347         unsigned int tmp = from;
2348         from = to;
2349         to = tmp;
2350     }
2351
2352     unsigned int i;
2353     for (i = from; i <= to; i++)
2354     {
2355         if (m_selection.Index( i ) == wxNOT_FOUND)
2356         {
2357             if (on)
2358                 m_selection.Add( i );
2359         }
2360         else
2361         {
2362             if (!on)
2363                 m_selection.Remove( i );
2364         }
2365     }
2366     RefreshRows( from, to );
2367 }
2368
2369 void wxDataViewMainWindow::Select( const wxArrayInt& aSelections )
2370 {
2371     for (size_t i=0; i < aSelections.GetCount(); i++)
2372     {
2373         int n = aSelections[i];
2374
2375         m_selection.Add( n );
2376         RefreshRow( n );
2377     }
2378 }
2379
2380 void wxDataViewMainWindow::ReverseRowSelection( unsigned int row )
2381 {
2382     if (m_selection.Index( row ) == wxNOT_FOUND)
2383         m_selection.Add( row );
2384     else
2385         m_selection.Remove( row );
2386     RefreshRow( row );
2387 }
2388
2389 bool wxDataViewMainWindow::IsRowSelected( unsigned int row )
2390 {
2391     return (m_selection.Index( row ) != wxNOT_FOUND);
2392 }
2393
2394 void wxDataViewMainWindow::SendSelectionChangedEvent( const wxDataViewItem& item)
2395 {
2396     wxWindow *parent = GetParent();
2397     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED, parent->GetId());
2398
2399     le.SetEventObject(parent);
2400     le.SetModel(GetOwner()->GetModel());
2401     le.SetItem( item );
2402
2403     parent->GetEventHandler()->ProcessEvent(le);
2404 }
2405
2406 void wxDataViewMainWindow::RefreshRow( unsigned int row )
2407 {
2408     wxRect rect( 0, GetLineStart( row ), GetEndOfLastCol(), GetLineHeight( row ) );
2409     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2410
2411     wxSize client_size = GetClientSize();
2412     wxRect client_rect( 0, 0, client_size.x, client_size.y );
2413     wxRect intersect_rect = client_rect.Intersect( rect );
2414     if (intersect_rect.width > 0)
2415         Refresh( true, &intersect_rect );
2416 }
2417
2418 void wxDataViewMainWindow::RefreshRows( unsigned int from, unsigned int to )
2419 {
2420     if (from > to)
2421     {
2422         unsigned int tmp = to;
2423         to = from;
2424         from = tmp;
2425     }
2426
2427     wxRect rect( 0, GetLineStart( from ), GetEndOfLastCol(), GetLineStart( (to-from+1) ) );
2428     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2429
2430     wxSize client_size = GetClientSize();
2431     wxRect client_rect( 0, 0, client_size.x, client_size.y );
2432     wxRect intersect_rect = client_rect.Intersect( rect );
2433     if (intersect_rect.width > 0)
2434         Refresh( true, &intersect_rect );
2435 }
2436
2437 void wxDataViewMainWindow::RefreshRowsAfter( unsigned int firstRow )
2438 {
2439     wxSize client_size = GetClientSize();
2440     int start = GetLineStart( firstRow );
2441     m_owner->CalcScrolledPosition( start, 0, &start, NULL );
2442     if (start > client_size.y) return;
2443
2444     wxRect rect( 0, start, client_size.x, client_size.y - start );
2445
2446     Refresh( true, &rect );
2447 }
2448
2449 void wxDataViewMainWindow::OnArrowChar(unsigned int newCurrent, const wxKeyEvent& event)
2450 {
2451     wxCHECK_RET( newCurrent < GetRowCount(),
2452                 wxT("invalid item index in OnArrowChar()") );
2453
2454     // if there is no selection, we cannot move it anywhere
2455     if (!HasCurrentRow())
2456         return;
2457
2458     unsigned int oldCurrent = m_currentRow;
2459
2460     // in single selection we just ignore Shift as we can't select several
2461     // items anyhow
2462     if ( event.ShiftDown() && !IsSingleSel() )
2463     {
2464         RefreshRow( oldCurrent );
2465
2466         ChangeCurrentRow( newCurrent );
2467
2468         // select all the items between the old and the new one
2469         if ( oldCurrent > newCurrent )
2470         {
2471             newCurrent = oldCurrent;
2472             oldCurrent = m_currentRow;
2473         }
2474
2475         SelectRows( oldCurrent, newCurrent, true );
2476         if (oldCurrent!=newCurrent)
2477             SendSelectionChangedEvent(GetItemByRow(m_selection[0]));
2478     }
2479     else // !shift
2480     {
2481         RefreshRow( oldCurrent );
2482
2483         // all previously selected items are unselected unless ctrl is held
2484         if ( !event.ControlDown() )
2485             SelectAllRows(false);
2486
2487         ChangeCurrentRow( newCurrent );
2488
2489         if ( !event.ControlDown() )
2490         {
2491             SelectRow( m_currentRow, true );
2492             SendSelectionChangedEvent(GetItemByRow(m_currentRow));
2493         }
2494         else
2495             RefreshRow( m_currentRow );
2496     }
2497
2498     GetOwner()->EnsureVisible( m_currentRow, -1 );
2499 }
2500
2501 wxRect wxDataViewMainWindow::GetLineRect( unsigned int row ) const
2502 {
2503     wxRect rect;
2504     rect.x = 0;
2505     rect.y = GetLineStart( row );
2506     rect.width = GetEndOfLastCol();
2507     rect.height = GetLineHeight( row );
2508
2509     return rect;
2510 }
2511
2512 int wxDataViewMainWindow::GetLineStart( unsigned int row ) const
2513 {
2514     const wxDataViewModel *model = GetOwner()->GetModel();
2515
2516     if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
2517     {
2518         // TODO make more efficient
2519
2520         int start = 0;
2521
2522         unsigned int r;
2523         for (r = 0; r < row; r++)
2524         {
2525             const wxDataViewTreeNode* node = GetTreeNodeByRow(r);
2526             if (!node) return start;
2527
2528             wxDataViewItem item = node->GetItem();
2529
2530             if (node && !node->HasChildren())
2531             {
2532                 // Yes, if the node does not have any child, it must be a leaf which
2533                 // mean that it is a temporarily created by GetTreeNodeByRow
2534                 wxDELETE(node);
2535             }
2536
2537             unsigned int cols = GetOwner()->GetColumnCount();
2538             unsigned int col;
2539             int height = m_lineHeight;
2540             for (col = 0; col < cols; col++)
2541             {
2542                 const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2543                 if (column->IsHidden())
2544                     continue;      // skip it!
2545
2546                 if ((col != 0) &&
2547                     model->IsContainer(item) &&
2548                     !model->HasContainerColumns(item))
2549                     continue;      // skip it!
2550
2551                 wxDataViewRenderer *renderer =
2552                     const_cast<wxDataViewRenderer*>(column->GetRenderer());
2553                 renderer->PrepareForItem(model, item, column->GetModelColumn());
2554
2555                 height = wxMax( height, renderer->GetSize().y );
2556             }
2557
2558             start += height;
2559         }
2560
2561         return start;
2562     }
2563     else
2564     {
2565         return row * m_lineHeight;
2566     }
2567 }
2568
2569 int wxDataViewMainWindow::GetLineAt( unsigned int y ) const
2570 {
2571     const wxDataViewModel *model = GetOwner()->GetModel();
2572
2573     // check for the easy case first
2574     if ( !GetOwner()->HasFlag(wxDV_VARIABLE_LINE_HEIGHT) )
2575         return y / m_lineHeight;
2576
2577     // TODO make more efficient
2578     unsigned int row = 0;
2579     unsigned int yy = 0;
2580     for (;;)
2581     {
2582         const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
2583         if (!node)
2584         {
2585             // not really correct...
2586             return row + ((y-yy) / m_lineHeight);
2587         }
2588
2589         wxDataViewItem item = node->GetItem();
2590
2591         if (node && !node->HasChildren())
2592         {
2593             // Yes, if the node does not have any child, it must be a leaf which
2594             // mean that it is a temporarily created by GetTreeNodeByRow
2595             wxDELETE(node);
2596         }
2597
2598         unsigned int cols = GetOwner()->GetColumnCount();
2599         unsigned int col;
2600         int height = m_lineHeight;
2601         for (col = 0; col < cols; col++)
2602         {
2603             const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2604             if (column->IsHidden())
2605                 continue;      // skip it!
2606
2607             if ((col != 0) &&
2608                 model->IsContainer(item) &&
2609                 !model->HasContainerColumns(item))
2610                 continue;      // skip it!
2611
2612             wxDataViewRenderer *renderer =
2613                 const_cast<wxDataViewRenderer*>(column->GetRenderer());
2614             renderer->PrepareForItem(model, item, column->GetModelColumn());
2615
2616             height = wxMax( height, renderer->GetSize().y );
2617         }
2618
2619         yy += height;
2620         if (y < yy)
2621             return row;
2622
2623         row++;
2624     }
2625 }
2626
2627 int wxDataViewMainWindow::GetLineHeight( unsigned int row ) const
2628 {
2629     const wxDataViewModel *model = GetOwner()->GetModel();
2630
2631     if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
2632     {
2633         wxASSERT( !IsVirtualList() );
2634
2635         const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
2636         // wxASSERT( node );
2637         if (!node) return m_lineHeight;
2638
2639         wxDataViewItem item = node->GetItem();
2640
2641         if (node && !node->HasChildren())
2642         {
2643                 // Yes, if the node does not have any child, it must be a leaf which
2644                 // mean that it is a temporarily created by GetTreeNodeByRow
2645             wxDELETE(node);
2646         }
2647
2648         int height = m_lineHeight;
2649
2650         unsigned int cols = GetOwner()->GetColumnCount();
2651         unsigned int col;
2652         for (col = 0; col < cols; col++)
2653         {
2654             const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2655             if (column->IsHidden())
2656                 continue;      // skip it!
2657
2658             if ((col != 0) &&
2659                 model->IsContainer(item) &&
2660                 !model->HasContainerColumns(item))
2661                 continue;      // skip it!
2662
2663             wxDataViewRenderer *renderer =
2664                 const_cast<wxDataViewRenderer*>(column->GetRenderer());
2665             renderer->PrepareForItem(model, item, column->GetModelColumn());
2666
2667             height = wxMax( height, renderer->GetSize().y );
2668         }
2669
2670         return height;
2671     }
2672     else
2673     {
2674         return m_lineHeight;
2675     }
2676 }
2677
2678 class RowToItemJob: public DoJob
2679 {
2680 public:
2681     RowToItemJob( unsigned int row , int current )
2682         { this->row = row; this->current = current; }
2683     virtual ~RowToItemJob() {}
2684
2685     virtual int operator() ( wxDataViewTreeNode * node )
2686     {
2687         current ++;
2688         if( current == static_cast<int>(row))
2689         {
2690             ret = node->GetItem();
2691             return DoJob::OK;
2692         }
2693
2694         if( node->GetSubTreeCount() + current < static_cast<int>(row) )
2695         {
2696             current += node->GetSubTreeCount();
2697             return  DoJob::IGR;
2698         }
2699         else
2700         {
2701             // If the current has no child node, we can find the desired item of the row
2702             // number directly.
2703             // This if can speed up finding in some case, and will has a very good effect
2704             // when it comes to list view
2705             if( node->GetNodes().GetCount() == 0)
2706             {
2707                 int index = static_cast<int>(row) - current - 1;
2708                 ret = node->GetChildren().Item( index );
2709                 return DoJob::OK;
2710             }
2711             return DoJob::CONT;
2712         }
2713     }
2714
2715     virtual int operator() ( void * n )
2716     {
2717         current ++;
2718         if( current == static_cast<int>(row))
2719         {
2720             ret = wxDataViewItem( n );
2721             return DoJob::OK;
2722         }
2723         return DoJob::CONT;
2724     }
2725
2726     wxDataViewItem GetResult() const
2727         { return ret; }
2728
2729 private:
2730     unsigned int row;
2731     int current;
2732     wxDataViewItem ret;
2733 };
2734
2735 wxDataViewItem wxDataViewMainWindow::GetItemByRow(unsigned int row) const
2736 {
2737     if (IsVirtualList())
2738     {
2739         return wxDataViewItem( wxUIntToPtr(row+1) );
2740     }
2741     else
2742     {
2743         RowToItemJob job( row, -2 );
2744         Walker( m_root , job );
2745         return job.GetResult();
2746     }
2747 }
2748
2749 class RowToTreeNodeJob: public DoJob
2750 {
2751 public:
2752     RowToTreeNodeJob( unsigned int row , int current, wxDataViewTreeNode * node )
2753     {
2754         this->row = row;
2755         this->current = current;
2756         ret = NULL;
2757         parent = node;
2758     }
2759     virtual ~RowToTreeNodeJob(){ }
2760
2761     virtual int operator() ( wxDataViewTreeNode * node )
2762     {
2763         current ++;
2764         if( current == static_cast<int>(row))
2765         {
2766             ret = node;
2767             return DoJob::OK;
2768         }
2769
2770         if( node->GetSubTreeCount() + current < static_cast<int>(row) )
2771         {
2772             current += node->GetSubTreeCount();
2773             return  DoJob::IGR;
2774         }
2775         else
2776         {
2777             parent = node;
2778
2779             // If the current node has no children, we can find the desired item of the
2780             // row number directly.
2781             // This if can speed up finding in some case, and will have a very good
2782             // effect for list views.
2783             if( node->GetNodes().GetCount() == 0)
2784             {
2785                 int index = static_cast<int>(row) - current - 1;
2786                 void * n = node->GetChildren().Item( index );
2787                 ret = new wxDataViewTreeNode( parent );
2788                 ret->SetItem( wxDataViewItem( n ));
2789                 ret->SetHasChildren(false);
2790                 return DoJob::OK;
2791             }
2792             return DoJob::CONT;
2793         }
2794     }
2795
2796     virtual int operator() ( void * n )
2797     {
2798         current ++;
2799         if( current == static_cast<int>(row))
2800         {
2801             ret = new wxDataViewTreeNode( parent );
2802             ret->SetItem( wxDataViewItem( n ));
2803             ret->SetHasChildren(false);
2804             return DoJob::OK;
2805         }
2806
2807         return DoJob::CONT;
2808     }
2809
2810     wxDataViewTreeNode * GetResult() const
2811         { return ret; }
2812
2813 private:
2814     unsigned int row;
2815     int current;
2816     wxDataViewTreeNode * ret;
2817     wxDataViewTreeNode * parent;
2818 };
2819
2820 wxDataViewTreeNode * wxDataViewMainWindow::GetTreeNodeByRow(unsigned int row) const
2821 {
2822     wxASSERT( !IsVirtualList() );
2823
2824     RowToTreeNodeJob job( row , -2, m_root );
2825     Walker( m_root , job );
2826     return job.GetResult();
2827 }
2828
2829 wxDataViewEvent wxDataViewMainWindow::SendExpanderEvent( wxEventType type,
2830                                                          const wxDataViewItem & item )
2831 {
2832     wxWindow *parent = GetParent();
2833     wxDataViewEvent le(type, parent->GetId());
2834
2835     le.SetEventObject(parent);
2836     le.SetModel(GetOwner()->GetModel());
2837     le.SetItem( item );
2838
2839     parent->GetEventHandler()->ProcessEvent(le);
2840     return le;
2841 }
2842
2843 bool wxDataViewMainWindow::IsExpanded( unsigned int row ) const
2844 {
2845     if (IsList())
2846         return false;
2847
2848     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2849     if (!node)
2850         return false;
2851
2852     if (!node->HasChildren())
2853     {
2854         delete node;
2855         return false;
2856     }
2857
2858     return node->IsOpen();
2859 }
2860
2861 bool wxDataViewMainWindow::HasChildren( unsigned int row ) const
2862 {
2863     if (IsList())
2864         return false;
2865
2866     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2867     if (!node)
2868         return false;
2869
2870     if (!node->HasChildren())
2871     {
2872         delete node;
2873         return false;
2874     }
2875
2876     return true;
2877 }
2878
2879 void wxDataViewMainWindow::Expand( unsigned int row )
2880 {
2881     if (IsList())
2882         return;
2883
2884     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2885     if (!node)
2886         return;
2887
2888     if (!node->HasChildren())
2889     {
2890         delete node;
2891         return;
2892     }
2893
2894             if (!node->IsOpen())
2895             {
2896                 wxDataViewEvent e =
2897                     SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, node->GetItem());
2898
2899                 // Check if the user prevent expanding
2900                 if( e.GetSkipped() )
2901                     return;
2902
2903                 node->ToggleOpen();
2904
2905                 // build the children of current node
2906                 if( node->GetChildrenNumber() == 0 )
2907                 {
2908                     SortPrepare();
2909                     ::BuildTreeHelper(GetOwner()->GetModel(), node->GetItem(), node);
2910                 }
2911
2912                 // By expanding the node all row indices that are currently in the selection list
2913                 // and are greater than our node have become invalid. So we have to correct that now.
2914                 const unsigned rowAdjustment = node->GetSubTreeCount();
2915                 for(unsigned i=0; i<m_selection.size(); ++i)
2916                 {
2917                     const unsigned testRow = m_selection[i];
2918                     // all rows above us are not affected, so skip them
2919                     if(testRow <= row)
2920                         continue;
2921
2922                     m_selection[i] += rowAdjustment;
2923                 }
2924
2925                 if(m_currentRow > row)
2926                     ChangeCurrentRow(m_currentRow + rowAdjustment);
2927
2928                 m_count = -1;
2929                 UpdateDisplay();
2930                 // Send the expanded event
2931                 SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED,node->GetItem());
2932             }
2933 }
2934
2935 void wxDataViewMainWindow::Collapse(unsigned int row)
2936 {
2937     if (IsList())
2938         return;
2939
2940     wxDataViewTreeNode *node = GetTreeNodeByRow(row);
2941     if (!node)
2942         return;
2943
2944     if (!node->HasChildren())
2945     {
2946         delete node;
2947         return;
2948     }
2949
2950         if (node->IsOpen())
2951         {
2952             wxDataViewEvent e =
2953                 SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING,node->GetItem());
2954             if( e.GetSkipped() )
2955                 return;
2956
2957             // Find out if there are selected items below the current node.
2958             bool selectCollapsingRow = false;
2959             const unsigned rowAdjustment = node->GetSubTreeCount();
2960             unsigned maxRowToBeTested = row + rowAdjustment;
2961             for(unsigned i=0; i<m_selection.size(); ++i)
2962             {
2963                 const unsigned testRow = m_selection[i];
2964                 if(testRow > row && testRow <= maxRowToBeTested)
2965                 {
2966                     selectCollapsingRow = true;
2967                     // get out as soon as we have found a node that is selected
2968                     break;
2969                 }
2970             }
2971
2972             node->ToggleOpen();
2973
2974             // If the node to be closed has selected items the user won't see those any longer.
2975             // We select the collapsing node in this case.
2976             if(selectCollapsingRow)
2977             {
2978                 SelectAllRows(false);
2979                 ChangeCurrentRow(row);
2980                 SelectRow(row, true);
2981                 SendSelectionChangedEvent(GetItemByRow(row));
2982             }
2983             else
2984             {
2985                 // if there were no selected items below our node we still need to "fix" the
2986                 // selection list to adjust for the changing of the row indices.
2987                 // We actually do the opposite of what we are doing in Expand().
2988                 for(unsigned i=0; i<m_selection.size(); ++i)
2989                 {
2990                     const unsigned testRow = m_selection[i];
2991                     // all rows above us are not affected, so skip them
2992                     if(testRow <= row)
2993                         continue;
2994
2995                     m_selection[i] -= rowAdjustment;
2996                 }
2997
2998                 // if the "current row" is being collapsed away we change it to the current row ;-)
2999                 if(m_currentRow > row && m_currentRow <= maxRowToBeTested)
3000                     ChangeCurrentRow(row);
3001                 else if(m_currentRow > row)
3002                     ChangeCurrentRow(m_currentRow - rowAdjustment);
3003             }
3004
3005             m_count = -1;
3006             UpdateDisplay();
3007             SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED,node->GetItem());
3008         }
3009 }
3010
3011 wxDataViewTreeNode * wxDataViewMainWindow::FindNode( const wxDataViewItem & item )
3012 {
3013     const wxDataViewModel * model = GetOwner()->GetModel();
3014     if( model == NULL )
3015         return NULL;
3016
3017     if (!item.IsOk())
3018         return m_root;
3019
3020     // Compose the parent-chain for the item we are looking for
3021     wxVector<wxDataViewItem> parentChain;
3022     wxDataViewItem it( item );
3023     while( it.IsOk() )
3024     {
3025         parentChain.push_back(it);
3026         it = model->GetParent(it);
3027     }
3028
3029     // Find the item along the parent-chain.
3030     // This algorithm is designed to speed up the node-finding method
3031     wxDataViewTreeNode* node = m_root;
3032     for( unsigned iter = parentChain.size()-1; iter>=0; --iter )
3033     {
3034         if( node->HasChildren() )
3035         {
3036             if( node->GetChildrenNumber() == 0 )
3037             {
3038                 SortPrepare();
3039                 ::BuildTreeHelper(model, node->GetItem(), node);
3040             }
3041
3042             const wxDataViewTreeNodes& nodes = node->GetNodes();
3043             bool found = false;
3044
3045             for (unsigned i = 0; i < nodes.GetCount(); ++i)
3046             {
3047                 wxDataViewTreeNode* currentNode = nodes[i];
3048                 if (currentNode->GetItem() == parentChain[iter])
3049                 {
3050                     if (currentNode->GetItem() == item)
3051                         return currentNode;
3052
3053                     node = currentNode;
3054                     found = true;
3055                     break;
3056                 }
3057             }
3058             if (!found)
3059                 return NULL;
3060         }
3061         else
3062             return NULL;
3063     }
3064     return NULL;
3065 }
3066
3067 void wxDataViewMainWindow::HitTest( const wxPoint & point, wxDataViewItem & item,
3068                                     wxDataViewColumn* &column )
3069 {
3070     wxDataViewColumn *col = NULL;
3071     unsigned int cols = GetOwner()->GetColumnCount();
3072     unsigned int colnum = 0;
3073     int x, y;
3074     m_owner->CalcUnscrolledPosition( point.x, point.y, &x, &y );
3075     for (unsigned x_start = 0; colnum < cols; colnum++)
3076     {
3077         col = GetOwner()->GetColumnAt(colnum);
3078         if (col->IsHidden())
3079             continue;      // skip it!
3080
3081         unsigned int w = col->GetWidth();
3082         if (x_start+w >= (unsigned int)x)
3083             break;
3084
3085         x_start += w;
3086     }
3087
3088     column = col;
3089     item = GetItemByRow( GetLineAt( y ) );
3090 }
3091
3092 wxRect wxDataViewMainWindow::GetItemRect( const wxDataViewItem & item,
3093                                           const wxDataViewColumn* column )
3094 {
3095     int xpos = 0;
3096     int width = 0;
3097
3098     unsigned int cols = GetOwner()->GetColumnCount();
3099     // If column is null the loop will compute the combined width of all columns.
3100     // Otherwise, it will compute the x position of the column we are looking for.
3101     for (unsigned int i = 0; i < cols; i++)
3102     {
3103         wxDataViewColumn* col = GetOwner()->GetColumnAt( i );
3104
3105         if (col == column)
3106             break;
3107
3108         if (col->IsHidden())
3109             continue;      // skip it!
3110
3111         xpos += col->GetWidth();
3112         width += col->GetWidth();
3113     }
3114
3115     if(column != 0)
3116     {
3117         // If we have a column, we need can get its width directly.
3118         if(column->IsHidden())
3119             width = 0;
3120         else
3121             width = column->GetWidth();
3122
3123     }
3124     else
3125     {
3126         // If we have no column, we reset the x position back to zero.
3127         xpos = 0;
3128     }
3129
3130     // we have to take an expander column into account and compute its indentation
3131     // to get the correct x position where the actual text is
3132     int indent = 0;
3133     int row = GetRowByItem(item);
3134     if (!IsList() && (column == 0 || GetOwner()->GetExpanderColumn() == column) )
3135     {
3136         wxDataViewTreeNode* node = GetTreeNodeByRow(row);
3137         indent = GetOwner()->GetIndent() * node->GetIndentLevel();
3138         indent = indent + m_lineHeight; // use m_lineHeight as the width of the expander
3139
3140         if(!node->HasChildren())
3141             delete node;
3142     }
3143
3144     wxRect itemRect( xpos + indent,
3145                      GetLineStart( row ),
3146                      width - indent,
3147                      GetLineHeight( row ) );
3148
3149     GetOwner()->CalcScrolledPosition(  itemRect.x,  itemRect.y,
3150                                       &itemRect.x, &itemRect.y );
3151
3152     return itemRect;
3153 }
3154
3155 int wxDataViewMainWindow::RecalculateCount()
3156 {
3157     if (IsVirtualList())
3158     {
3159         wxDataViewVirtualListModel *list_model =
3160             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
3161
3162         return list_model->GetCount();
3163     }
3164     else
3165     {
3166         return m_root->GetSubTreeCount();
3167     }
3168 }
3169
3170 class ItemToRowJob : public DoJob
3171 {
3172 public:
3173     ItemToRowJob(const wxDataViewItem& item_, wxVector<wxDataViewItem>::reverse_iterator iter)
3174         : m_iter(iter),
3175         item(item_)
3176     {
3177         ret = -1;
3178     }
3179
3180     // Maybe binary search will help to speed up this process
3181     virtual int operator() ( wxDataViewTreeNode * node)
3182     {
3183         ret ++;
3184         if( node->GetItem() == item )
3185         {
3186             return DoJob::OK;
3187         }
3188
3189         if( node->GetItem() == *m_iter )
3190         {
3191             m_iter++;
3192             return DoJob::CONT;
3193         }
3194         else
3195         {
3196             ret += node->GetSubTreeCount();
3197             return DoJob::IGR;
3198         }
3199
3200     }
3201
3202     virtual int operator() ( void * n )
3203     {
3204         ret ++;
3205         if( n == item.GetID() )
3206             return DoJob::OK;
3207         return DoJob::CONT;
3208     }
3209
3210     // the row number is begin from zero
3211     int GetResult() const
3212         { return ret -1; }
3213
3214 private:
3215     wxVector<wxDataViewItem>::reverse_iterator m_iter;
3216     wxDataViewItem item;
3217     int ret;
3218
3219 };
3220
3221 int wxDataViewMainWindow::GetRowByItem(const wxDataViewItem & item) const
3222 {
3223     const wxDataViewModel * model = GetOwner()->GetModel();
3224     if( model == NULL )
3225         return -1;
3226
3227     if (IsVirtualList())
3228     {
3229         return wxPtrToUInt( item.GetID() ) -1;
3230     }
3231     else
3232     {
3233         if( !item.IsOk() )
3234             return -1;
3235
3236         // Compose the parent-chain of the item we are looking for
3237         wxVector<wxDataViewItem> parentChain;
3238         wxDataViewItem it( item );
3239         while( it.IsOk() )
3240         {
3241             parentChain.push_back(it);
3242             it = model->GetParent(it);
3243         }
3244
3245         // add an 'invalid' item to represent our 'invisible' root node
3246         parentChain.push_back(wxDataViewItem());
3247
3248         // the parent chain was created by adding the deepest parent first.
3249         // so if we want to start at the root node, we have to iterate backwards through the vector
3250         ItemToRowJob job( item, parentChain.rbegin() );
3251         Walker( m_root, job );
3252         return job.GetResult();
3253     }
3254 }
3255
3256 static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
3257                              wxDataViewTreeNode * node)
3258 {
3259     if( !model->IsContainer( item ) )
3260         return;
3261
3262     wxDataViewItemArray children;
3263     unsigned int num = model->GetChildren( item, children);
3264
3265     unsigned int index = 0;
3266     while( index < num )
3267     {
3268         if( model->IsContainer( children[index] ) )
3269         {
3270             wxDataViewTreeNode * n = new wxDataViewTreeNode( node );
3271             n->SetItem(children[index]);
3272             n->SetHasChildren( true );
3273             node->AddNode( n );
3274         }
3275         else
3276         {
3277             node->AddLeaf( children[index].GetID() );
3278         }
3279         index ++;
3280     }
3281     node->SetSubTreeCount( num );
3282     wxDataViewTreeNode * n = node->GetParent();
3283     if( n != NULL)
3284         n->ChangeSubTreeCount(num);
3285
3286 }
3287
3288 void wxDataViewMainWindow::BuildTree(wxDataViewModel * model)
3289 {
3290     DestroyTree();
3291
3292     if (GetOwner()->GetModel()->IsVirtualListModel())
3293     {
3294         m_count = -1;
3295         return;
3296     }
3297
3298     m_root = new wxDataViewTreeNode( NULL );
3299     m_root->SetHasChildren(true);
3300
3301     // First we define a invalid item to fetch the top-level elements
3302     wxDataViewItem item;
3303     SortPrepare();
3304     BuildTreeHelper( model, item, m_root);
3305     m_count = -1;
3306 }
3307
3308 static void DestroyTreeHelper( wxDataViewTreeNode * node )
3309 {
3310     if( node->GetNodeNumber() != 0 )
3311     {
3312         int len = node->GetNodeNumber();
3313         wxDataViewTreeNodes& nodes = node->GetNodes();
3314         for (int i = 0; i < len; i++)
3315             DestroyTreeHelper(nodes[i]);
3316     }
3317     delete node;
3318 }
3319
3320 void wxDataViewMainWindow::DestroyTree()
3321 {
3322     if (!IsVirtualList())
3323     {
3324         ::DestroyTreeHelper(m_root);
3325             m_count = 0;
3326             m_root = NULL;
3327     }
3328 }
3329
3330 void wxDataViewMainWindow::OnChar( wxKeyEvent &event )
3331 {
3332     wxWindow * const parent = GetParent();
3333
3334     // propagate the char event upwards
3335     wxKeyEvent eventForParent(event);
3336     eventForParent.SetEventObject(parent);
3337     if ( parent->ProcessWindowEvent(eventForParent) )
3338         return;
3339
3340     if ( parent->HandleAsNavigationKey(event) )
3341         return;
3342
3343     // no item -> nothing to do
3344     if (!HasCurrentRow())
3345     {
3346         event.Skip();
3347         return;
3348     }
3349
3350     // don't use m_linesPerPage directly as it might not be computed yet
3351     const int pageSize = GetCountPerPage();
3352     wxCHECK_RET( pageSize, wxT("should have non zero page size") );
3353
3354     switch ( event.GetKeyCode() )
3355     {
3356         case WXK_RETURN:
3357             {
3358                 wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED,
3359                                    parent->GetId());
3360                 le.SetItem( GetItemByRow(m_currentRow) );
3361                 le.SetEventObject(parent);
3362                 le.SetModel(GetOwner()->GetModel());
3363
3364                 parent->GetEventHandler()->ProcessEvent(le);
3365             }
3366             break;
3367
3368         case WXK_UP:
3369             if ( m_currentRow > 0 )
3370                 OnArrowChar( m_currentRow - 1, event );
3371             break;
3372
3373         case WXK_DOWN:
3374             if ( m_currentRow < GetRowCount() - 1 )
3375                 OnArrowChar( m_currentRow + 1, event );
3376             break;
3377         // Add the process for tree expanding/collapsing
3378         case WXK_LEFT:
3379         {
3380             if (IsList())
3381                break;
3382
3383             wxDataViewTreeNode* node = GetTreeNodeByRow(m_currentRow);
3384             if (!node)
3385                 break;
3386
3387             if (node->HasChildren() && node->IsOpen())
3388             {
3389                 Collapse(m_currentRow);
3390             }
3391             else    // if the node is already closed we move the selection to its parent
3392             {
3393                 wxDataViewTreeNode *parent_node = node->GetParent();
3394
3395                 if(!node->HasChildren())
3396                     delete node;
3397
3398                 if (parent_node)
3399                 {
3400                     int parent = GetRowByItem( parent_node->GetItem() );
3401                     if ( parent >= 0 )
3402                     {
3403                         unsigned int row = m_currentRow;
3404                         SelectRow( row, false);
3405                         SelectRow( parent, true );
3406                         ChangeCurrentRow( parent );
3407                         GetOwner()->EnsureVisible( parent, -1 );
3408                         SendSelectionChangedEvent( parent_node->GetItem() );
3409                     }
3410                 }
3411             }
3412             break;
3413         }
3414         case WXK_RIGHT:
3415         {
3416             if (!IsExpanded( m_currentRow ))
3417                 Expand( m_currentRow );
3418             else
3419             {
3420                 unsigned int row = m_currentRow;
3421                 SelectRow( row, false );
3422                 SelectRow( row + 1, true );
3423                 ChangeCurrentRow( row + 1 );
3424                 GetOwner()->EnsureVisible( row + 1, -1 );
3425                 SendSelectionChangedEvent( GetItemByRow(row+1) );
3426             }
3427             break;
3428         }
3429         case WXK_END:
3430         {
3431             if (!IsEmpty())
3432                 OnArrowChar( GetRowCount() - 1, event );
3433             break;
3434         }
3435         case WXK_HOME:
3436             if (!IsEmpty())
3437                 OnArrowChar( 0, event );
3438             break;
3439
3440         case WXK_PAGEUP:
3441             {
3442                 int steps = pageSize - 1;
3443                 int index = m_currentRow - steps;
3444                 if (index < 0)
3445                     index = 0;
3446
3447                 OnArrowChar( index, event );
3448             }
3449             break;
3450
3451         case WXK_PAGEDOWN:
3452             {
3453                 int steps = pageSize - 1;
3454                 unsigned int index = m_currentRow + steps;
3455                 unsigned int count = GetRowCount();
3456                 if ( index >= count )
3457                     index = count - 1;
3458
3459                 OnArrowChar( index, event );
3460             }
3461             break;
3462
3463         case WXK_F2:
3464             {
3465                 if(m_selection.size() == 1)
3466                 {
3467                     // TODO: we need to revise that when we have a concept for a 'current column'
3468                     GetOwner()->StartEditor(GetItemByRow(m_selection[0]), 0);
3469                 }
3470             }
3471             break;
3472
3473         default:
3474             event.Skip();
3475     }
3476 }
3477
3478 void wxDataViewMainWindow::OnMouse( wxMouseEvent &event )
3479 {
3480     if (event.GetEventType() == wxEVT_MOUSEWHEEL)
3481     {
3482         // let the base handle mouse wheel events.
3483         event.Skip();
3484         return;
3485     }
3486
3487     // set the focus to ourself if any of the mouse buttons are pressed
3488     if(event.ButtonDown() && !HasFocus())
3489         SetFocus();
3490
3491     int x = event.GetX();
3492     int y = event.GetY();
3493     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
3494     wxDataViewColumn *col = NULL;
3495
3496     int xpos = 0;
3497     unsigned int cols = GetOwner()->GetColumnCount();
3498     unsigned int i;
3499     for (i = 0; i < cols; i++)
3500     {
3501         wxDataViewColumn *c = GetOwner()->GetColumnAt( i );
3502         if (c->IsHidden())
3503             continue;      // skip it!
3504
3505         if (x < xpos + c->GetWidth())
3506         {
3507             col = c;
3508             break;
3509         }
3510         xpos += c->GetWidth();
3511     }
3512     if (!col)
3513     {
3514         event.Skip();
3515         return;
3516     }
3517
3518     wxDataViewRenderer *cell = col->GetRenderer();
3519     unsigned int current = GetLineAt( y );
3520     if ((current >= GetRowCount()) || (x > GetEndOfLastCol()))
3521     {
3522         // Unselect all if below the last row ?
3523         event.Skip();
3524         return;
3525     }
3526
3527     // Test whether the mouse is hovered on the tree item button
3528     bool hoverOverExpander = false;
3529     if ((!IsList()) && (GetOwner()->GetExpanderColumn() == col))
3530     {
3531         wxDataViewTreeNode * node = GetTreeNodeByRow(current);
3532         if( node!=NULL && node->HasChildren() )
3533         {
3534             int indent = node->GetIndentLevel();
3535             indent = GetOwner()->GetIndent()*indent;
3536
3537             // we make the rectangle we are looking in a bit bigger than the actual
3538             // visual expander so the user can hit that little thing reliably
3539             wxRect rect( xpos + indent,
3540                         GetLineStart( current ) + (GetLineHeight(current) - m_lineHeight)/2,
3541                         m_lineHeight, m_lineHeight);
3542             if( rect.Contains(x, y) )
3543             {
3544                 // So the mouse is over the expander
3545                 hoverOverExpander = true;
3546                 if (m_underMouse && m_underMouse != node)
3547                 {
3548                     // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
3549                     RefreshRow(GetRowByItem(m_underMouse->GetItem()));
3550                 }
3551                 if (m_underMouse != node)
3552                 {
3553                     // wxLogMessage("Do the row: %d", current);
3554                     RefreshRow(current);
3555                 }
3556                 m_underMouse = node;
3557             }
3558         }
3559         if (node!=NULL && !node->HasChildren())
3560             delete node;
3561     }
3562     if (!hoverOverExpander)
3563     {
3564         if (m_underMouse != NULL)
3565         {
3566             // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
3567             RefreshRow(GetRowByItem(m_underMouse->GetItem()));
3568             m_underMouse = NULL;
3569         }
3570     }
3571
3572     wxDataViewModel *model = GetOwner()->GetModel();
3573
3574 #if wxUSE_DRAG_AND_DROP
3575     if (event.Dragging())
3576     {
3577         if (m_dragCount == 0)
3578         {
3579             // we have to report the raw, physical coords as we want to be
3580             // able to call HitTest(event.m_pointDrag) from the user code to
3581             // get the item being dragged
3582             m_dragStart = event.GetPosition();
3583         }
3584
3585         m_dragCount++;
3586
3587         if (m_dragCount != 3)
3588             return;
3589
3590         if (event.LeftIsDown())
3591         {
3592             m_owner->CalcUnscrolledPosition( m_dragStart.x, m_dragStart.y,
3593                                              &m_dragStart.x, &m_dragStart.y );
3594             unsigned int drag_item_row = GetLineAt( m_dragStart.y );
3595             wxDataViewItem item = GetItemByRow( drag_item_row );
3596
3597             // Notify cell about drag
3598             wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_BEGIN_DRAG, m_owner->GetId() );
3599             event.SetEventObject( m_owner );
3600             event.SetItem( item );
3601             event.SetModel( model );
3602             if (!m_owner->HandleWindowEvent( event ))
3603                 return;
3604
3605             if (!event.IsAllowed())
3606                 return;
3607
3608             wxDataObject *obj = event.GetDataObject();
3609             if (!obj)
3610                 return;
3611
3612             wxDataViewDropSource drag( this, drag_item_row );
3613             drag.SetData( *obj );
3614             /* wxDragResult res = */ drag.DoDragDrop();
3615             delete obj;
3616         }
3617         return;
3618     }
3619     else
3620     {
3621         m_dragCount = 0;
3622     }
3623 #endif // wxUSE_DRAG_AND_DROP
3624
3625     bool simulateClick = false;
3626
3627     if (event.ButtonDClick())
3628     {
3629         m_renameTimer->Stop();
3630         m_lastOnSame = false;
3631     }
3632
3633     wxDataViewItem item = GetItemByRow(current);
3634     bool ignore_other_columns =
3635         ((GetOwner()->GetExpanderColumn() != col) &&
3636         (model->IsContainer(item)) &&
3637         (!model->HasContainerColumns(item)));
3638
3639     if (event.LeftDClick())
3640     {
3641         if(hoverOverExpander)
3642         {
3643             // a double click on the expander will be converted into a "simulated" normal click
3644             simulateClick = true;
3645         }
3646         else if ( current == m_lineLastClicked )
3647         {
3648             if ((!ignore_other_columns) && (cell->GetMode() == wxDATAVIEW_CELL_ACTIVATABLE))
3649             {
3650                 const unsigned colIdx = col->GetModelColumn();
3651
3652                 cell->PrepareForItem(model, item, colIdx);
3653
3654                 wxRect cell_rect( xpos, GetLineStart( current ),
3655                                 col->GetWidth(), GetLineHeight( current ) );
3656                 cell->WXOnActivate( cell_rect, model, item, colIdx );
3657             }
3658             else
3659             {
3660                 wxWindow *parent = GetParent();
3661                 wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED, parent->GetId());
3662                 le.SetItem( item );
3663                 le.SetColumn( col->GetModelColumn() );
3664                 le.SetDataViewColumn( col );
3665                 le.SetEventObject(parent);
3666                 le.SetModel(GetOwner()->GetModel());
3667
3668                 parent->GetEventHandler()->ProcessEvent(le);
3669             }
3670             return;
3671         }
3672         else
3673         {
3674             // The first click was on another item, so don't interpret this as
3675             // a double click, but as a simple click instead
3676             simulateClick = true;
3677         }
3678     }
3679
3680     if (event.LeftUp() && !hoverOverExpander)
3681     {
3682         if (m_lineSelectSingleOnUp != (unsigned int)-1)
3683         {
3684             // select single line
3685             SelectAllRows( false );
3686             SelectRow( m_lineSelectSingleOnUp, true );
3687             SendSelectionChangedEvent( GetItemByRow(m_lineSelectSingleOnUp) );
3688         }
3689
3690         // If the user click the expander, we do not do editing even if the column
3691         // with expander are editable
3692         if (m_lastOnSame && !ignore_other_columns)
3693         {
3694             if ((col == m_currentCol) && (current == m_currentRow) &&
3695                 (cell->GetMode() & wxDATAVIEW_CELL_EDITABLE) )
3696             {
3697                 m_renameTimer->Start( 100, true );
3698             }
3699         }
3700
3701         m_lastOnSame = false;
3702         m_lineSelectSingleOnUp = (unsigned int)-1;
3703     }
3704     else if(!event.LeftUp())
3705     {
3706         // This is necessary, because after a DnD operation in
3707         // from and to ourself, the up event is swallowed by the
3708         // DnD code. So on next non-up event (which means here and
3709         // now) m_lineSelectSingleOnUp should be reset.
3710         m_lineSelectSingleOnUp = (unsigned int)-1;
3711     }
3712
3713     if (event.RightDown())
3714     {
3715         m_lineBeforeLastClicked = m_lineLastClicked;
3716         m_lineLastClicked = current;
3717
3718         // If the item is already selected, do not update the selection.
3719         // Multi-selections should not be cleared if a selected item is clicked.
3720         if (!IsRowSelected(current))
3721         {
3722             SelectAllRows(false);
3723             ChangeCurrentRow(current);
3724             SelectRow(m_currentRow,true);
3725             SendSelectionChangedEvent(GetItemByRow( m_currentRow ) );
3726         }
3727     }
3728     else if (event.RightUp())
3729     {
3730         wxVariant value;
3731         model->GetValue( value, item, col->GetModelColumn() );
3732         wxWindow *parent = GetParent();
3733         wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_CONTEXT_MENU, parent->GetId());
3734         le.SetItem( item );
3735         le.SetColumn( col->GetModelColumn() );
3736         le.SetDataViewColumn( col );
3737         le.SetEventObject(parent);
3738         le.SetModel(GetOwner()->GetModel());
3739         le.SetValue(value);
3740         parent->GetEventHandler()->ProcessEvent(le);
3741     }
3742     else if (event.MiddleDown())
3743     {
3744     }
3745
3746     if((event.LeftDown() || simulateClick) && hoverOverExpander)
3747     {
3748         wxDataViewTreeNode* node = GetTreeNodeByRow(current);
3749
3750         // hoverOverExpander being true tells us that our node must be
3751         // valid and have children.
3752         // So we don't need any extra checks.
3753         if( node->IsOpen() )
3754             Collapse(current);
3755         else
3756             Expand(current);
3757     }
3758     else if ((event.LeftDown() || simulateClick) && !hoverOverExpander)
3759     {
3760         m_lineBeforeLastClicked = m_lineLastClicked;
3761         m_lineLastClicked = current;
3762
3763         unsigned int oldCurrentRow = m_currentRow;
3764         bool oldWasSelected = IsRowSelected(m_currentRow);
3765
3766         bool cmdModifierDown = event.CmdDown();
3767         if ( IsSingleSel() || !(cmdModifierDown || event.ShiftDown()) )
3768         {
3769             if ( IsSingleSel() || !IsRowSelected(current) )
3770             {
3771                 SelectAllRows( false );
3772                 ChangeCurrentRow(current);
3773                 SelectRow(m_currentRow,true);
3774                 SendSelectionChangedEvent(GetItemByRow( m_currentRow ) );
3775             }
3776             else // multi sel & current is highlighted & no mod keys
3777             {
3778                 m_lineSelectSingleOnUp = current;
3779                 ChangeCurrentRow(current); // change focus
3780             }
3781         }
3782         else // multi sel & either ctrl or shift is down
3783         {
3784             if (cmdModifierDown)
3785             {
3786                 ChangeCurrentRow(current);
3787                 ReverseRowSelection(m_currentRow);
3788                 SendSelectionChangedEvent(GetItemByRow(m_currentRow));
3789             }
3790             else if (event.ShiftDown())
3791             {
3792                 ChangeCurrentRow(current);
3793
3794                 unsigned int lineFrom = oldCurrentRow,
3795                     lineTo = current;
3796
3797                 if ( lineTo < lineFrom )
3798                 {
3799                     lineTo = lineFrom;
3800                     lineFrom = m_currentRow;
3801                 }
3802
3803                 SelectRows(lineFrom, lineTo, true);
3804                 SendSelectionChangedEvent(GetItemByRow(m_selection[0]) );
3805             }
3806             else // !ctrl, !shift
3807             {
3808                 // test in the enclosing if should make it impossible
3809                 wxFAIL_MSG( wxT("how did we get here?") );
3810             }
3811         }
3812
3813         if (m_currentRow != oldCurrentRow)
3814             RefreshRow( oldCurrentRow );
3815
3816         wxDataViewColumn *oldCurrentCol = m_currentCol;
3817
3818         // Update selection here...
3819         m_currentCol = col;
3820
3821         m_lastOnSame = !simulateClick && ((col == oldCurrentCol) &&
3822                         (current == oldCurrentRow)) && oldWasSelected;
3823
3824         // Call LeftClick after everything else as under GTK+
3825         if (cell->GetMode() & wxDATAVIEW_CELL_ACTIVATABLE)
3826         {
3827             // notify cell about click
3828             cell->PrepareForItem(model, item, col->GetModelColumn());
3829
3830             wxRect cell_rect( xpos, GetLineStart( current ),
3831                               col->GetWidth(), GetLineHeight( current ) );
3832
3833             // Report position relative to the cell's custom area, i.e.
3834             // no the entire space as given by the control but the one
3835             // used by the renderer after calculation of alignment etc.
3836
3837             // adjust the rectangle ourselves to account for the alignment
3838             wxRect rectItem = cell_rect;
3839             const int align = cell->GetAlignment();
3840             if ( align != wxDVR_DEFAULT_ALIGNMENT )
3841             {
3842                 const wxSize size = cell->GetSize();
3843
3844                 if ( size.x >= 0 && size.x < cell_rect.width )
3845                 {
3846                     if ( align & wxALIGN_CENTER_HORIZONTAL )
3847                         rectItem.x += (cell_rect.width - size.x)/2;
3848                     else if ( align & wxALIGN_RIGHT )
3849                         rectItem.x += cell_rect.width - size.x;
3850                     // else: wxALIGN_LEFT is the default
3851                 }
3852
3853                 if ( size.y >= 0 && size.y < cell_rect.height )
3854                 {
3855                     if ( align & wxALIGN_CENTER_VERTICAL )
3856                         rectItem.y += (cell_rect.height - size.y)/2;
3857                     else if ( align & wxALIGN_BOTTOM )
3858                         rectItem.y += cell_rect.height - size.y;
3859                     // else: wxALIGN_TOP is the default
3860                 }
3861             }
3862
3863             wxPoint pos( event.GetPosition() );
3864             pos.x -= rectItem.x;
3865             pos.y -= rectItem.y;
3866
3867             m_owner->CalcUnscrolledPosition( pos.x, pos.y, &pos.x, &pos.y );
3868
3869              /* ignore ret */ cell->WXOnLeftClick( pos, cell_rect,
3870                               model, item, col->GetModelColumn());
3871         }
3872     }
3873 }
3874
3875 void wxDataViewMainWindow::OnSetFocus( wxFocusEvent &event )
3876 {
3877     m_hasFocus = true;
3878
3879     if (HasCurrentRow())
3880         Refresh();
3881
3882     event.Skip();
3883 }
3884
3885 void wxDataViewMainWindow::OnKillFocus( wxFocusEvent &event )
3886 {
3887     m_hasFocus = false;
3888
3889     if (HasCurrentRow())
3890         Refresh();
3891
3892     event.Skip();
3893 }
3894
3895 wxDataViewItem wxDataViewMainWindow::GetSelection() const
3896 {
3897     if( m_selection.GetCount() != 1 )
3898         return wxDataViewItem();
3899
3900     return GetItemByRow( m_selection.Item(0));
3901 }
3902
3903 //-----------------------------------------------------------------------------
3904 // wxDataViewCtrl
3905 //-----------------------------------------------------------------------------
3906
3907 WX_DEFINE_LIST(wxDataViewColumnList)
3908
3909 IMPLEMENT_DYNAMIC_CLASS(wxDataViewCtrl, wxDataViewCtrlBase)
3910 BEGIN_EVENT_TABLE(wxDataViewCtrl, wxDataViewCtrlBase)
3911     EVT_SIZE(wxDataViewCtrl::OnSize)
3912 END_EVENT_TABLE()
3913
3914 wxDataViewCtrl::~wxDataViewCtrl()
3915 {
3916     if (m_notifier)
3917         GetModel()->RemoveNotifier( m_notifier );
3918
3919     m_cols.Clear();
3920     m_colsBestWidths.clear();
3921 }
3922
3923 void wxDataViewCtrl::Init()
3924 {
3925     m_cols.DeleteContents(true);
3926     m_notifier = NULL;
3927
3928     // No sorting column at start
3929     m_sortingColumnIdx = wxNOT_FOUND;
3930
3931     m_headerArea = NULL;
3932 }
3933
3934 bool wxDataViewCtrl::Create(wxWindow *parent,
3935                             wxWindowID id,
3936                             const wxPoint& pos,
3937                             const wxSize& size,
3938                             long style,
3939                             const wxValidator& validator,
3940                             const wxString& name)
3941 {
3942 //    if ( (style & wxBORDER_MASK) == 0)
3943 //        style |= wxBORDER_SUNKEN;
3944
3945     Init();
3946
3947     if (!wxControl::Create( parent, id, pos, size,
3948                             style | wxScrolledWindowStyle, validator, name))
3949         return false;
3950
3951     SetInitialSize(size);
3952
3953 #ifdef __WXMAC__
3954     MacSetClipChildren( true );
3955 #endif
3956
3957     m_clientArea = new wxDataViewMainWindow( this, wxID_ANY );
3958
3959     // We use the cursor keys for moving the selection, not scrolling, so call
3960     // this method to ensure wxScrollHelperEvtHandler doesn't catch all
3961     // keyboard events forwarded to us from wxListMainWindow.
3962     DisableKeyboardScrolling();
3963
3964     if (HasFlag(wxDV_NO_HEADER))
3965         m_headerArea = NULL;
3966     else
3967         m_headerArea = new wxDataViewHeaderWindow(this);
3968
3969     SetTargetWindow( m_clientArea );
3970
3971     wxBoxSizer *sizer = new wxBoxSizer( wxVERTICAL );
3972     if (m_headerArea)
3973         sizer->Add( m_headerArea, 0, wxGROW );
3974     sizer->Add( m_clientArea, 1, wxGROW );
3975     SetSizer( sizer );
3976
3977     return true;
3978 }
3979
3980 wxBorder wxDataViewCtrl::GetDefaultBorder() const
3981 {
3982     return wxBORDER_THEME;
3983 }
3984
3985 #ifdef __WXMSW__
3986 WXLRESULT wxDataViewCtrl::MSWWindowProc(WXUINT nMsg,
3987                                         WXWPARAM wParam,
3988                                         WXLPARAM lParam)
3989 {
3990     WXLRESULT rc = wxDataViewCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
3991
3992 #ifndef __WXWINCE__
3993     // we need to process arrows ourselves for scrolling
3994     if ( nMsg == WM_GETDLGCODE )
3995     {
3996         rc |= DLGC_WANTARROWS;
3997     }
3998 #endif
3999
4000     return rc;
4001 }
4002 #endif
4003
4004 wxSize wxDataViewCtrl::GetSizeAvailableForScrollTarget(const wxSize& size)
4005 {
4006     wxSize newsize = size;
4007     if (!HasFlag(wxDV_NO_HEADER) && (m_headerArea))
4008     newsize.y -= m_headerArea->GetSize().y;
4009
4010     return newsize;
4011 }
4012
4013 void wxDataViewCtrl::OnSize( wxSizeEvent &WXUNUSED(event) )
4014 {
4015     // We need to override OnSize so that our scrolled
4016     // window a) does call Layout() to use sizers for
4017     // positioning the controls but b) does not query
4018     // the sizer for their size and use that for setting
4019     // the scrollable area as set that ourselves by
4020     // calling SetScrollbar() further down.
4021
4022     Layout();
4023
4024     AdjustScrollbars();
4025 }
4026
4027 void wxDataViewCtrl::SetFocus()
4028 {
4029     if (m_clientArea)
4030         m_clientArea->SetFocus();
4031 }
4032
4033 bool wxDataViewCtrl::AssociateModel( wxDataViewModel *model )
4034 {
4035     if (!wxDataViewCtrlBase::AssociateModel( model ))
4036         return false;
4037
4038     m_notifier = new wxGenericDataViewModelNotifier( m_clientArea );
4039
4040     model->AddNotifier( m_notifier );
4041
4042     m_clientArea->DestroyTree();
4043
4044     m_clientArea->BuildTree(model);
4045
4046     m_clientArea->UpdateDisplay();
4047
4048     return true;
4049 }
4050
4051 #if wxUSE_DRAG_AND_DROP
4052
4053 bool wxDataViewCtrl::EnableDragSource( const wxDataFormat &format )
4054 {
4055     return m_clientArea->EnableDragSource( format );
4056 }
4057
4058 bool wxDataViewCtrl::EnableDropTarget( const wxDataFormat &format )
4059 {
4060     return m_clientArea->EnableDropTarget( format );
4061 }
4062
4063 #endif // wxUSE_DRAG_AND_DROP
4064
4065 bool wxDataViewCtrl::AppendColumn( wxDataViewColumn *col )
4066 {
4067     if (!wxDataViewCtrlBase::AppendColumn(col))
4068         return false;
4069
4070     m_cols.Append( col );
4071     m_colsBestWidths.push_back(0);
4072     OnColumnsCountChanged();
4073     return true;
4074 }
4075
4076 bool wxDataViewCtrl::PrependColumn( wxDataViewColumn *col )
4077 {
4078     if (!wxDataViewCtrlBase::PrependColumn(col))
4079         return false;
4080
4081     m_cols.Insert( col );
4082     m_colsBestWidths.insert(m_colsBestWidths.begin(), 0);
4083     OnColumnsCountChanged();
4084     return true;
4085 }
4086
4087 bool wxDataViewCtrl::InsertColumn( unsigned int pos, wxDataViewColumn *col )
4088 {
4089     if (!wxDataViewCtrlBase::InsertColumn(pos,col))
4090         return false;
4091
4092     m_cols.Insert( pos, col );
4093     m_colsBestWidths.insert(m_colsBestWidths.begin() + pos, 0);
4094     OnColumnsCountChanged();
4095     return true;
4096 }
4097
4098 void wxDataViewCtrl::OnColumnChange(unsigned int idx)
4099 {
4100     if ( m_headerArea )
4101         m_headerArea->UpdateColumn(idx);
4102
4103     m_clientArea->UpdateDisplay();
4104 }
4105
4106 void wxDataViewCtrl::OnColumnsCountChanged()
4107 {
4108     if (m_headerArea)
4109         m_headerArea->SetColumnCount(GetColumnCount());
4110
4111     m_clientArea->UpdateDisplay();
4112 }
4113
4114 void wxDataViewCtrl::DoSetExpanderColumn()
4115 {
4116     m_clientArea->UpdateDisplay();
4117 }
4118
4119 void wxDataViewCtrl::DoSetIndent()
4120 {
4121     m_clientArea->UpdateDisplay();
4122 }
4123
4124 unsigned int wxDataViewCtrl::GetColumnCount() const
4125 {
4126     return m_cols.GetCount();
4127 }
4128
4129 bool wxDataViewCtrl::SetRowHeight( int lineHeight )
4130 {
4131     if ( !m_clientArea )
4132         return false;
4133
4134     m_clientArea->SetRowHeight(lineHeight);
4135
4136     return true;
4137 }
4138
4139 wxDataViewColumn* wxDataViewCtrl::GetColumn( unsigned int idx ) const
4140 {
4141     return m_cols[idx];
4142 }
4143
4144 wxDataViewColumn *wxDataViewCtrl::GetColumnAt(unsigned int pos) const
4145 {
4146     // columns can't be reordered if there is no header window which allows
4147     // to do this
4148     const unsigned idx = m_headerArea ? m_headerArea->GetColumnsOrder()[pos]
4149                                     : pos;
4150
4151     return GetColumn(idx);
4152 }
4153
4154 int wxDataViewCtrl::GetColumnIndex(const wxDataViewColumn *column) const
4155 {
4156     const unsigned count = m_cols.size();
4157     for ( unsigned n = 0; n < count; n++ )
4158     {
4159         if ( m_cols[n] == column )
4160             return n;
4161     }
4162
4163     return wxNOT_FOUND;
4164 }
4165
4166 unsigned int wxDataViewCtrl::GetBestColumnWidth(int idx) const
4167 {
4168     if ( m_colsBestWidths[idx] != 0 )
4169         return m_colsBestWidths[idx];
4170
4171     const int count = m_clientArea->GetRowCount();
4172     wxDataViewColumn *column = GetColumn(idx);
4173     wxDataViewRenderer *renderer =
4174         const_cast<wxDataViewRenderer*>(column->GetRenderer());
4175
4176     class MaxWidthCalculator
4177     {
4178     public:
4179         MaxWidthCalculator(wxDataViewMainWindow *clientArea,
4180                            wxDataViewRenderer *renderer,
4181                            const wxDataViewModel *model,
4182                            unsigned column)
4183             : m_width(0),
4184               m_clientArea(clientArea),
4185               m_renderer(renderer),
4186               m_model(model),
4187               m_column(column)
4188         {
4189         }
4190
4191         void UpdateWithWidth(int width)
4192         {
4193             m_width = wxMax(m_width, width);
4194         }
4195
4196         void UpdateWithRow(int row)
4197         {
4198             wxDataViewItem item = m_clientArea->GetItemByRow(row);
4199             m_renderer->PrepareForItem(m_model, item, m_column);
4200             m_width = wxMax(m_width, m_renderer->GetSize().x);
4201         }
4202
4203         int GetMaxWidth() const { return m_width; }
4204
4205     private:
4206         int m_width;
4207         wxDataViewMainWindow *m_clientArea;
4208         wxDataViewRenderer *m_renderer;
4209         const wxDataViewModel *m_model;
4210         unsigned m_column;
4211     };
4212
4213     MaxWidthCalculator calculator(m_clientArea, renderer,
4214                                   GetModel(), column->GetModelColumn());
4215
4216     if ( m_headerArea )
4217     {
4218         int header_width = m_headerArea->GetTextExtent(column->GetTitle()).x;
4219         // Labels on native MSW header are indented on both sides
4220         header_width +=
4221             wxRendererNative::Get().GetHeaderButtonMargin(m_headerArea);
4222         calculator.UpdateWithWidth(header_width);
4223     }
4224
4225     // The code below deserves some explanation. For very large controls, we
4226     // simply can't afford to calculate sizes for all items, it takes too
4227     // long. So the best we can do is to check the first and the last N/2
4228     // items in the control for some sufficiently large N and calculate best
4229     // sizes from that. That can result in the calculated best width being too
4230     // small for some outliers, but it's better to get slightly imperfect
4231     // result than to wait several seconds after every update. To avoid highly
4232     // visible miscalculations, we also include all currently visible items
4233     // no matter what.  Finally, the value of N is determined dynamically by
4234     // measuring how much time we spent on the determining item widths so far.
4235
4236 #if wxUSE_STOPWATCH
4237     int top_part_end = count;
4238     static const long CALC_TIMEOUT = 20/*ms*/;
4239     // don't call wxStopWatch::Time() too often
4240     static const unsigned CALC_CHECK_FREQ = 100;
4241     wxStopWatch timer;
4242 #else
4243     // use some hard-coded limit, that's the best we can do without timer
4244     int top_part_end = wxMin(500, count);
4245 #endif // wxUSE_STOPWATCH/!wxUSE_STOPWATCH
4246
4247     int row = 0;
4248
4249     for ( row = 0; row < top_part_end; row++ )
4250     {
4251 #if wxUSE_STOPWATCH
4252         if ( row % CALC_CHECK_FREQ == CALC_CHECK_FREQ-1 &&
4253              timer.Time() > CALC_TIMEOUT )
4254             break;
4255 #endif // wxUSE_STOPWATCH
4256         calculator.UpdateWithRow(row);
4257     }
4258
4259     // row is the first unmeasured item now; that's our value of N/2
4260
4261     if ( row < count )
4262     {
4263         top_part_end = row;
4264
4265         // add bottom N/2 items now:
4266         const int bottom_part_start = wxMax(row, count - row);
4267         for ( row = bottom_part_start; row < count; row++ )
4268         {
4269             calculator.UpdateWithRow(row);
4270         }
4271
4272         // finally, include currently visible items in the calculation:
4273         const wxPoint origin = CalcUnscrolledPosition(wxPoint(0, 0));
4274         int first_visible = m_clientArea->GetLineAt(origin.y);
4275         int last_visible = m_clientArea->GetLineAt(origin.y + GetClientSize().y);
4276
4277         first_visible = wxMax(first_visible, top_part_end);
4278         last_visible = wxMin(bottom_part_start, last_visible);
4279
4280         for ( row = first_visible; row < last_visible; row++ )
4281         {
4282             calculator.UpdateWithRow(row);
4283         }
4284
4285         wxLogTrace("dataview",
4286                    "determined best size from %d top, %d bottom plus %d more visible items out of %d total",
4287                    top_part_end,
4288                    count - bottom_part_start,
4289                    wxMax(0, last_visible - first_visible),
4290                    count);
4291     }
4292
4293     int max_width = calculator.GetMaxWidth();
4294     if ( max_width > 0 )
4295         max_width += 2 * PADDING_RIGHTLEFT;
4296
4297     const_cast<wxDataViewCtrl*>(this)->m_colsBestWidths[idx] = max_width;
4298     return max_width;
4299 }
4300
4301 void wxDataViewCtrl::ColumnMoved(wxDataViewColumn * WXUNUSED(col),
4302                                 unsigned int WXUNUSED(new_pos))
4303 {
4304     // do _not_ reorder m_cols elements here, they should always be in the
4305     // order in which columns were added, we only display the columns in
4306     // different order
4307     m_clientArea->UpdateDisplay();
4308 }
4309
4310 bool wxDataViewCtrl::DeleteColumn( wxDataViewColumn *column )
4311 {
4312     wxDataViewColumnList::compatibility_iterator ret = m_cols.Find( column );
4313     if (!ret)
4314         return false;
4315
4316     m_colsBestWidths.erase(m_colsBestWidths.begin() + GetColumnIndex(column));
4317     m_cols.Erase(ret);
4318     OnColumnsCountChanged();
4319
4320     return true;
4321 }
4322
4323 bool wxDataViewCtrl::ClearColumns()
4324 {
4325     m_cols.Clear();
4326     m_colsBestWidths.clear();
4327     OnColumnsCountChanged();
4328     return true;
4329 }
4330
4331 void wxDataViewCtrl::InvalidateColBestWidth(int idx)
4332 {
4333     m_colsBestWidths[idx] = 0;
4334
4335     if ( m_headerArea )
4336         m_headerArea->UpdateColumn(idx);
4337 }
4338
4339 void wxDataViewCtrl::InvalidateColBestWidths()
4340 {
4341     m_colsBestWidths.clear();
4342     m_colsBestWidths.resize(m_cols.size());
4343
4344     if ( m_headerArea )
4345     {
4346         const unsigned cols = m_headerArea->GetColumnCount();
4347         for ( unsigned i = 0; i < cols; i++ )
4348             m_headerArea->UpdateColumn(i);
4349     }
4350 }
4351
4352 int wxDataViewCtrl::GetColumnPosition( const wxDataViewColumn *column ) const
4353 {
4354 #if 1
4355     unsigned int len = GetColumnCount();
4356     for ( unsigned int i = 0; i < len; i++ )
4357     {
4358         wxDataViewColumn * col = GetColumnAt(i);
4359         if (column==col)
4360             return i;
4361     }
4362
4363     return wxNOT_FOUND;
4364 #else
4365     // This returns the position in pixels which is not what we want.
4366     int ret = 0,
4367         dummy = 0;
4368     unsigned int len = GetColumnCount();
4369     for ( unsigned int i = 0; i < len; i++ )
4370     {
4371         wxDataViewColumn * col = GetColumnAt(i);
4372         if (col->IsHidden())
4373             continue;
4374         ret += col->GetWidth();
4375         if (column==col)
4376         {
4377             CalcScrolledPosition( ret, dummy, &ret, &dummy );
4378             break;
4379         }
4380     }
4381     return ret;
4382 #endif
4383 }
4384
4385 wxDataViewColumn *wxDataViewCtrl::GetSortingColumn() const
4386 {
4387     return m_sortingColumnIdx == wxNOT_FOUND ? NULL
4388                                             : GetColumn(m_sortingColumnIdx);
4389 }
4390
4391 wxDataViewItem wxDataViewCtrl::DoGetCurrentItem() const
4392 {
4393     return GetItemByRow(m_clientArea->GetCurrentRow());
4394 }
4395
4396 void wxDataViewCtrl::DoSetCurrentItem(const wxDataViewItem& item)
4397 {
4398     const int row = m_clientArea->GetRowByItem(item);
4399
4400     const unsigned oldCurrent = m_clientArea->GetCurrentRow();
4401     if ( static_cast<unsigned>(row) != oldCurrent )
4402     {
4403         m_clientArea->ChangeCurrentRow(row);
4404         m_clientArea->RefreshRow(oldCurrent);
4405         m_clientArea->RefreshRow(row);
4406     }
4407 }
4408
4409 // Selection code with wxDataViewItem as parameters
4410 wxDataViewItem wxDataViewCtrl::GetSelection() const
4411 {
4412     return m_clientArea->GetSelection();
4413 }
4414
4415 int wxDataViewCtrl::GetSelections( wxDataViewItemArray & sel ) const
4416 {
4417     sel.Empty();
4418     wxDataViewSelection selection = m_clientArea->GetSelections();
4419     int len = selection.GetCount();
4420     for( int i = 0; i < len; i ++)
4421     {
4422         unsigned int row = selection[i];
4423         sel.Add( m_clientArea->GetItemByRow( row ) );
4424     }
4425     return len;
4426 }
4427
4428 void wxDataViewCtrl::SetSelections( const wxDataViewItemArray & sel )
4429 {
4430     wxDataViewSelection selection(wxDataViewSelectionCmp);
4431
4432     wxDataViewItem last_parent;
4433
4434     int len = sel.GetCount();
4435     for( int i = 0; i < len; i ++ )
4436     {
4437         wxDataViewItem item = sel[i];
4438         wxDataViewItem parent = GetModel()->GetParent( item );
4439         if (parent)
4440         {
4441             if (parent != last_parent)
4442                 ExpandAncestors(item);
4443         }
4444
4445         last_parent = parent;
4446         int row = m_clientArea->GetRowByItem( item );
4447         if( row >= 0 )
4448             selection.Add( static_cast<unsigned int>(row) );
4449     }
4450
4451     m_clientArea->SetSelections( selection );
4452 }
4453
4454 void wxDataViewCtrl::Select( const wxDataViewItem & item )
4455 {
4456     ExpandAncestors( item );
4457
4458     int row = m_clientArea->GetRowByItem( item );
4459     if( row >= 0 )
4460     {
4461         // Unselect all rows before select another in the single select mode
4462         if (m_clientArea->IsSingleSel())
4463             m_clientArea->SelectAllRows(false);
4464
4465         m_clientArea->SelectRow(row, true);
4466
4467         // Also set focus to the selected item
4468         m_clientArea->ChangeCurrentRow( row );
4469     }
4470 }
4471
4472 void wxDataViewCtrl::Unselect( const wxDataViewItem & item )
4473 {
4474     int row = m_clientArea->GetRowByItem( item );
4475     if( row >= 0 )
4476         m_clientArea->SelectRow(row, false);
4477 }
4478
4479 bool wxDataViewCtrl::IsSelected( const wxDataViewItem & item ) const
4480 {
4481     int row = m_clientArea->GetRowByItem( item );
4482     if( row >= 0 )
4483     {
4484         return m_clientArea->IsRowSelected(row);
4485     }
4486     return false;
4487 }
4488
4489 // Selection code with row number as parameter
4490 int wxDataViewCtrl::GetSelections( wxArrayInt & sel ) const
4491 {
4492     sel.Empty();
4493     wxDataViewSelection selection = m_clientArea->GetSelections();
4494     int len = selection.GetCount();
4495     for( int i = 0; i < len; i ++)
4496     {
4497         unsigned int row = selection[i];
4498         sel.Add( row );
4499     }
4500     return len;
4501 }
4502
4503 void wxDataViewCtrl::SetSelections( const wxArrayInt & sel )
4504 {
4505     wxDataViewSelection selection(wxDataViewSelectionCmp);
4506     int len = sel.GetCount();
4507     for( int i = 0; i < len; i ++ )
4508     {
4509         int row = sel[i];
4510         if( row >= 0 )
4511             selection.Add( static_cast<unsigned int>(row) );
4512     }
4513     m_clientArea->SetSelections( selection );
4514 }
4515
4516 void wxDataViewCtrl::Select( int row )
4517 {
4518     if( row >= 0 )
4519     {
4520         if (m_clientArea->IsSingleSel())
4521             m_clientArea->SelectAllRows(false);
4522         m_clientArea->SelectRow( row, true );
4523     }
4524 }
4525
4526 void wxDataViewCtrl::Unselect( int row )
4527 {
4528     if( row >= 0 )
4529         m_clientArea->SelectRow(row, false);
4530 }
4531
4532 bool wxDataViewCtrl::IsSelected( int row ) const
4533 {
4534     if( row >= 0 )
4535         return m_clientArea->IsRowSelected(row);
4536     return false;
4537 }
4538
4539 void wxDataViewCtrl::SelectRange( int from, int to )
4540 {
4541     wxArrayInt sel;
4542     for( int i = from; i < to; i ++ )
4543         sel.Add( i );
4544     m_clientArea->Select(sel);
4545 }
4546
4547 void wxDataViewCtrl::UnselectRange( int from, int to )
4548 {
4549     wxDataViewSelection sel = m_clientArea->GetSelections();
4550     for( int i = from; i < to; i ++ )
4551         if( sel.Index( i ) != wxNOT_FOUND )
4552             sel.Remove( i );
4553     m_clientArea->SetSelections(sel);
4554 }
4555
4556 void wxDataViewCtrl::SelectAll()
4557 {
4558     m_clientArea->SelectAllRows(true);
4559 }
4560
4561 void wxDataViewCtrl::UnselectAll()
4562 {
4563     m_clientArea->SelectAllRows(false);
4564 }
4565
4566 void wxDataViewCtrl::EnsureVisible( int row, int column )
4567 {
4568     if( row < 0 )
4569         row = 0;
4570     if( row > (int) m_clientArea->GetRowCount() )
4571         row = m_clientArea->GetRowCount();
4572
4573     int first = m_clientArea->GetFirstVisibleRow();
4574     int last = m_clientArea->GetLastVisibleRow();
4575     if( row < first )
4576         m_clientArea->ScrollTo( row, column );
4577     else if( row > last )
4578         m_clientArea->ScrollTo( row - last + first, column );
4579     else
4580         m_clientArea->ScrollTo( first, column );
4581 }
4582
4583 void wxDataViewCtrl::EnsureVisible( const wxDataViewItem & item, const wxDataViewColumn * column )
4584 {
4585     ExpandAncestors( item );
4586
4587     m_clientArea->RecalculateDisplay();
4588
4589     int row = m_clientArea->GetRowByItem(item);
4590     if( row >= 0 )
4591     {
4592         if( column == NULL )
4593             EnsureVisible(row, -1);
4594         else
4595             EnsureVisible( row, GetColumnIndex(column) );
4596     }
4597
4598 }
4599
4600 void wxDataViewCtrl::HitTest( const wxPoint & point, wxDataViewItem & item,
4601                               wxDataViewColumn* &column ) const
4602 {
4603     m_clientArea->HitTest(point, item, column);
4604 }
4605
4606 wxRect wxDataViewCtrl::GetItemRect( const wxDataViewItem & item,
4607                                     const wxDataViewColumn* column ) const
4608 {
4609     return m_clientArea->GetItemRect(item, column);
4610 }
4611
4612 wxDataViewItem wxDataViewCtrl::GetItemByRow( unsigned int row ) const
4613 {
4614     return m_clientArea->GetItemByRow( row );
4615 }
4616
4617 int wxDataViewCtrl::GetRowByItem( const wxDataViewItem & item ) const
4618 {
4619     return m_clientArea->GetRowByItem( item );
4620 }
4621
4622 void wxDataViewCtrl::Expand( const wxDataViewItem & item )
4623 {
4624     ExpandAncestors( item );
4625
4626     int row = m_clientArea->GetRowByItem( item );
4627     if (row != -1)
4628         m_clientArea->Expand(row);
4629 }
4630
4631 void wxDataViewCtrl::Collapse( const wxDataViewItem & item )
4632 {
4633     int row = m_clientArea->GetRowByItem( item );
4634     if (row != -1)
4635         m_clientArea->Collapse(row);
4636 }
4637
4638 bool wxDataViewCtrl::IsExpanded( const wxDataViewItem & item ) const
4639 {
4640     int row = m_clientArea->GetRowByItem( item );
4641     if (row != -1)
4642         return m_clientArea->IsExpanded(row);
4643     return false;
4644 }
4645
4646 void wxDataViewCtrl::StartEditor( const wxDataViewItem & item, unsigned int column )
4647 {
4648     wxDataViewColumn* col = GetColumn( column );
4649     if (!col)
4650         return;
4651
4652     wxRect itemRect = GetItemRect(item, col);
4653     wxDataViewRenderer* renderer = col->GetRenderer();
4654     if (renderer->GetMode() == wxDATAVIEW_CELL_EDITABLE)
4655         renderer->StartEditing(item, itemRect);
4656 }
4657
4658 #endif // !wxUSE_GENERICDATAVIEWCTRL
4659
4660 #endif // wxUSE_DATAVIEWCTRL