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