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 WX_DEFINE_ARRAY( void* , wxDataViewTreeLeaves);
 279
 280 int LINKAGEMODE wxGenericTreeModelNodeCmp( wxDataViewTreeNode ** node1,
 281                                            wxDataViewTreeNode ** node2);
 282 int LINKAGEMODE wxGenericTreeModelItemCmp( void ** id1, void ** id2);
 283
 284 class wxDataViewTreeNode
 285 {
 286 public:
 287     wxDataViewTreeNode( wxDataViewTreeNode * parent = NULL )
 288     {
 289         m_parent = parent;
 290         if (!parent)
 291             m_open = true;
 292         else
 293             m_open = false;
 294         m_hasChildren = false;
 295         m_subTreeCount  = 0;
 296     }
 297
 298     ~wxDataViewTreeNode()
 299     {
 300     }
 301
 302     wxDataViewTreeNode * GetParent() const { return m_parent; }
 303     void SetParent( wxDataViewTreeNode * parent ) { m_parent = parent; }
 304     wxDataViewTreeNodes &  GetNodes() { return m_nodes; }
 305     wxDataViewTreeLeaves & GetChildren() { return m_leaves; }
 306
 307     void AddNode( wxDataViewTreeNode * node )
 308     {
 309         m_leaves.Add( node->GetItem().GetID() );
 310         if (g_column >= -1)
 311             m_leaves.Sort( &wxGenericTreeModelItemCmp );
 312         m_nodes.Add( node );
 313         if (g_column >= -1)
 314             m_nodes.Sort( &wxGenericTreeModelNodeCmp );
 315     }
 316     void AddLeaf( void * leaf )
 317     {
 318         m_leaves.Add( leaf );
 319         if (g_column >= -1)
 320             m_leaves.Sort( &wxGenericTreeModelItemCmp );
 321     }
 322
 323     wxDataViewItem & GetItem() { return m_item; }
 324     const wxDataViewItem & GetItem() const { return m_item; }
 325     void SetItem( const wxDataViewItem & item ) { m_item = item; }
 326
 327     unsigned int GetChildrenNumber() const { return m_leaves.GetCount(); }
 328     unsigned int GetNodeNumber() const { return m_nodes.GetCount(); }
 329     int GetIndentLevel() const
 330     {
 331         int ret = 0;
 332         const wxDataViewTreeNode * node = this;
 333         while( node->GetParent()->GetParent() != NULL )
 334         {
 335             node = node->GetParent();
 336             ret ++;
 337         }
 338         return ret;
 339     }
 340
 341     bool IsOpen() const
 342     {
 343         return m_open;
 344     }
 345
 346     void ToggleOpen()
 347     {
 348         int len = m_nodes.GetCount();
 349         int sum = 0;
 350         for ( int i = 0;i < len; i ++)
 351             sum += m_nodes[i]->GetSubTreeCount();
 352
 353         sum += m_leaves.GetCount();
 354         if (m_open)
 355         {
 356             ChangeSubTreeCount(-sum);
 357             m_open = !m_open;
 358         }
 359         else
 360         {
 361             m_open = !m_open;
 362             ChangeSubTreeCount(sum);
 363         }
 364     }
 365     bool HasChildren() const { return m_hasChildren; }
 366     void SetHasChildren( bool has ){ m_hasChildren = has; }
 367
 368     void SetSubTreeCount( int num ) { m_subTreeCount = num; }
 369     int GetSubTreeCount() const { return m_subTreeCount; }
 370     void ChangeSubTreeCount( int num )
 371     {
 372         if( !m_open )
 373             return;
 374         m_subTreeCount += num;
 375         if( m_parent )
 376             m_parent->ChangeSubTreeCount(num);
 377     }
 378
 379     void Resort()
 380     {
 381         if (g_column >= -1)
 382         {
 383             m_nodes.Sort( &wxGenericTreeModelNodeCmp );
 384             int len = m_nodes.GetCount();
 385             for (int i = 0; i < len; i ++)
 386                 m_nodes[i]->Resort();
 387             m_leaves.Sort( &wxGenericTreeModelItemCmp );
 388         }
 389     }
 390
 391 private:
 392     wxDataViewTreeNode  *m_parent;
 393     wxDataViewTreeNodes  m_nodes;
 394     wxDataViewTreeLeaves m_leaves;
 395     wxDataViewItem       m_item;
 396     bool                 m_open;
 397     bool                 m_hasChildren;
 398     int                  m_subTreeCount;
 399 };
 400
 401 int LINKAGEMODE wxGenericTreeModelNodeCmp( wxDataViewTreeNode ** node1,
 402                                            wxDataViewTreeNode ** node2)
 403 {
 404     return g_model->Compare( (*node1)->GetItem(), (*node2)->GetItem(), g_column, g_asending );
 405 }
 406
 407 int LINKAGEMODE wxGenericTreeModelItemCmp( void ** id1, void ** id2)
 408 {
 409     return g_model->Compare( *id1, *id2, g_column, g_asending );
 410 }
 411
 412
 413 //-----------------------------------------------------------------------------
 414 // wxDataViewMainWindow
 415 //-----------------------------------------------------------------------------
 416
 417 WX_DEFINE_SORTED_USER_EXPORTED_ARRAY_SIZE_T(unsigned int, wxDataViewSelection,
 418                                             WXDLLIMPEXP_ADV);
 419
 420 class wxDataViewMainWindow: public wxWindow
 421 {
 422 public:
 423     wxDataViewMainWindow( wxDataViewCtrl *parent,
 424                             wxWindowID id,
 425                             const wxPoint &pos = wxDefaultPosition,
 426                             const wxSize &size = wxDefaultSize,
 427                             const wxString &name = wxT("wxdataviewctrlmainwindow") );
 428     virtual ~wxDataViewMainWindow();
 429
 430     bool IsList() const { return GetOwner()->GetModel()->IsListModel(); }
 431     bool IsVirtualList() const { return m_root == NULL; }
 432
 433     // notifications from wxDataViewModel
 434     bool ItemAdded( const wxDataViewItem &parent, const wxDataViewItem &item );
 435     bool ItemDeleted( const wxDataViewItem &parent, const wxDataViewItem &item );
 436     bool ItemChanged( const wxDataViewItem &item );
 437     bool ValueChanged( const wxDataViewItem &item, unsigned int model_column );
 438     bool Cleared();
 439     void Resort()
 440     {
 441         if (!IsVirtualList())
 442         {
 443             SortPrepare();
 444             m_root->Resort();
 445         }
 446         UpdateDisplay();
 447     }
 448
 449     void SortPrepare()
 450     {
 451         g_model = GetOwner()->GetModel();
 452         wxDataViewColumn* col = GetOwner()->GetSortingColumn();
 453         if( !col )
 454         {
 455             if (g_model->HasDefaultCompare())
 456                 g_column = -1;
 457             else
 458                 g_column = -2;
 459
 460             g_asending = true;
 461             return;
 462         }
 463         g_column = col->GetModelColumn();
 464         g_asending = col->IsSortOrderAscending();
 465     }
 466
 467     void SetOwner( wxDataViewCtrl* owner ) { m_owner = owner; }
 468     wxDataViewCtrl *GetOwner() { return m_owner; }
 469     const wxDataViewCtrl *GetOwner() const { return m_owner; }
 470
 471 #if wxUSE_DRAG_AND_DROP
 472     wxBitmap CreateItemBitmap( unsigned int row, int &indent );
 473 #endif // wxUSE_DRAG_AND_DROP
 474     void OnPaint( wxPaintEvent &event );
 475     void OnArrowChar(unsigned int newCurrent, const wxKeyEvent& event);
 476     void OnChar( wxKeyEvent &event );
 477     void OnMouse( wxMouseEvent &event );
 478     void OnSetFocus( wxFocusEvent &event );
 479     void OnKillFocus( wxFocusEvent &event );
 480
 481     void UpdateDisplay();
 482     void RecalculateDisplay();
 483     void OnInternalIdle();
 484
 485     void OnRenameTimer();
 486
 487     void ScrollWindow( int dx, int dy, const wxRect *rect = NULL );
 488     void ScrollTo( int rows, int column );
 489
 490     unsigned GetCurrentRow() const { return m_currentRow; }
 491     bool HasCurrentRow() { return m_currentRow != (unsigned int)-1; }
 492     void ChangeCurrentRow( unsigned int row );
 493
 494     bool IsSingleSel() const { return !GetParent()->HasFlag(wxDV_MULTIPLE); }
 495     bool IsEmpty() { return GetRowCount() == 0; }
 496
 497     int GetCountPerPage() const;
 498     int GetEndOfLastCol() const;
 499     unsigned int GetFirstVisibleRow() const;
 500
 501     // I change this method to un const because in the tree view,
 502     // the displaying number of the tree are changing along with the
 503     // expanding/collapsing of the tree nodes
 504     unsigned int GetLastVisibleRow();
 505     unsigned int GetRowCount();
 506
 507     wxDataViewItem GetSelection() const;
 508     wxDataViewSelection GetSelections(){ return m_selection; }
 509     void SetSelections( const wxDataViewSelection & sel )
 510         { m_selection = sel; UpdateDisplay(); }
 511     void Select( const wxArrayInt& aSelections );
 512     void SelectAllRows( bool on );
 513     void SelectRow( unsigned int row, bool on );
 514     void SelectRows( unsigned int from, unsigned int to, bool on );
 515     void ReverseRowSelection( unsigned int row );
 516     bool IsRowSelected( unsigned int row );
 517     void SendSelectionChangedEvent( const wxDataViewItem& item);
 518
 519     void RefreshRow( unsigned int row );
 520     void RefreshRows( unsigned int from, unsigned int to );
 521     void RefreshRowsAfter( unsigned int firstRow );
 522
 523     // returns the colour to be used for drawing the rules
 524     wxColour GetRuleColour() const
 525     {
 526         return wxSystemSettings::GetColour(wxSYS_COLOUR_3DLIGHT);
 527     }
 528
 529     wxRect GetLineRect( unsigned int row ) const;
 530
 531     int GetLineStart( unsigned int row ) const;  // row * m_lineHeight in fixed mode
 532     int GetLineHeight( unsigned int row ) const; // m_lineHeight in fixed mode
 533     int GetLineAt( unsigned int y ) const;       // y / m_lineHeight in fixed mode
 534
 535     void SetRowHeight( int lineHeight ) { m_lineHeight = lineHeight; }
 536
 537     // Some useful functions for row and item mapping
 538     wxDataViewItem GetItemByRow( unsigned int row ) const;
 539     int GetRowByItem( const wxDataViewItem & item ) const;
 540
 541     // Methods for building the mapping tree
 542     void BuildTree( wxDataViewModel  * model );
 543     void DestroyTree();
 544     void HitTest( const wxPoint & point, wxDataViewItem & item, wxDataViewColumn* &column );
 545     wxRect GetItemRect( const wxDataViewItem & item, const wxDataViewColumn* column );
 546
 547     void Expand( unsigned int row );
 548     void Collapse( unsigned int row );
 549     bool IsExpanded( unsigned int row ) const;
 550     bool HasChildren( unsigned int row ) const;
 551
 552 #if wxUSE_DRAG_AND_DROP
 553     bool EnableDragSource( const wxDataFormat &format );
 554     bool EnableDropTarget( const wxDataFormat &format );
 555
 556     void RemoveDropHint();
 557     wxDragResult OnDragOver( wxDataFormat format, wxCoord x, wxCoord y, wxDragResult def );
 558     bool OnDrop( wxDataFormat format, wxCoord x, wxCoord y );
 559     wxDragResult OnData( wxDataFormat format, wxCoord x, wxCoord y, wxDragResult def );
 560     void OnLeave();
 561 #endif // wxUSE_DRAG_AND_DROP
 562
 563 private:
 564     wxDataViewTreeNode * GetTreeNodeByRow( unsigned int row ) const;
 565     // We did not need this temporarily
 566     // wxDataViewTreeNode * GetTreeNodeByItem( const wxDataViewItem & item );
 567
 568     int RecalculateCount();
 569
 570     wxDataViewEvent SendExpanderEvent( wxEventType type, const wxDataViewItem & item );
 571
 572     wxDataViewTreeNode * FindNode( const wxDataViewItem & item );
 573
 574 private:
 575     wxDataViewCtrl             *m_owner;
 576     int                         m_lineHeight;
 577     bool                        m_dirty;
 578
 579     wxDataViewColumn           *m_currentCol;
 580     unsigned int                m_currentRow;
 581     wxDataViewSelection         m_selection;
 582
 583     wxDataViewRenameTimer      *m_renameTimer;
 584     bool                        m_lastOnSame;
 585
 586     bool                        m_hasFocus;
 587
 588 #if wxUSE_DRAG_AND_DROP
 589     int                         m_dragCount;
 590     wxPoint                     m_dragStart;
 591
 592     bool                        m_dragEnabled;
 593     wxDataFormat                m_dragFormat;
 594
 595     bool                        m_dropEnabled;
 596     wxDataFormat                m_dropFormat;
 597     bool                        m_dropHint;
 598     unsigned int                m_dropHintLine;
 599 #endif // wxUSE_DRAG_AND_DROP
 600
 601     // for double click logic
 602     unsigned int m_lineLastClicked,
 603         m_lineBeforeLastClicked,
 604         m_lineSelectSingleOnUp;
 605
 606     // the pen used to draw horiz/vertical rules
 607     wxPen m_penRule;
 608
 609     // the pen used to draw the expander and the lines
 610     wxPen m_penExpander;
 611
 612     // This is the tree structure of the model
 613     wxDataViewTreeNode * m_root;
 614     int m_count;
 615
 616     // This is the tree node under the cursor
 617     wxDataViewTreeNode * m_underMouse;
 618
 619 private:
 620     DECLARE_DYNAMIC_CLASS(wxDataViewMainWindow)
 621     DECLARE_EVENT_TABLE()
 622 };
 623
 624 // ---------------------------------------------------------
 625 // wxGenericDataViewModelNotifier
 626 // ---------------------------------------------------------
 627
 628 class wxGenericDataViewModelNotifier: public wxDataViewModelNotifier
 629 {
 630 public:
 631     wxGenericDataViewModelNotifier( wxDataViewMainWindow *mainWindow )
 632         { m_mainWindow = mainWindow; }
 633
 634     virtual bool ItemAdded( const wxDataViewItem & parent, const wxDataViewItem & item )
 635         { return m_mainWindow->ItemAdded( parent , item ); }
 636     virtual bool ItemDeleted( const wxDataViewItem &parent, const wxDataViewItem &item )
 637         { return m_mainWindow->ItemDeleted( parent, item ); }
 638     virtual bool ItemChanged( const wxDataViewItem & item )
 639         { return m_mainWindow->ItemChanged(item);  }
 640     virtual bool ValueChanged( const wxDataViewItem & item , unsigned int col )
 641         { return m_mainWindow->ValueChanged( item, col ); }
 642     virtual bool Cleared()
 643         { return m_mainWindow->Cleared(); }
 644     virtual void Resort()
 645         { m_mainWindow->Resort(); }
 646
 647     wxDataViewMainWindow    *m_mainWindow;
 648 };
 649
 650 // ---------------------------------------------------------
 651 // wxDataViewRenderer
 652 // ---------------------------------------------------------
 653
 654 IMPLEMENT_ABSTRACT_CLASS(wxDataViewRenderer, wxDataViewRendererBase)
 655
 656 wxDataViewRenderer::wxDataViewRenderer( const wxString &varianttype,
 657                                         wxDataViewCellMode mode,
 658                                         int align) :
 659     wxDataViewCustomRendererBase( varianttype, mode, align )
 660 {
 661     m_align = align;
 662     m_mode = mode;
 663     m_ellipsizeMode = wxELLIPSIZE_MIDDLE;
 664     m_dc = NULL;
 665 }
 666
 667 wxDataViewRenderer::~wxDataViewRenderer()
 668 {
 669     delete m_dc;
 670 }
 671
 672 wxDC *wxDataViewRenderer::GetDC()
 673 {
 674     if (m_dc == NULL)
 675     {
 676         if (GetOwner() == NULL)
 677             return NULL;
 678         if (GetOwner()->GetOwner() == NULL)
 679             return NULL;
 680         m_dc = new wxClientDC( GetOwner()->GetOwner() );
 681     }
 682
 683     return m_dc;
 684 }
 685
 686 void wxDataViewRenderer::SetAlignment( int align )
 687 {
 688     m_align=align;
 689 }
 690
 691 int wxDataViewRenderer::GetAlignment() const
 692 {
 693     return m_align;
 694 }
 695
 696 // ---------------------------------------------------------
 697 // wxDataViewCustomRenderer
 698 // ---------------------------------------------------------
 699
 700 IMPLEMENT_ABSTRACT_CLASS(wxDataViewCustomRenderer, wxDataViewRenderer)
 701
 702 wxDataViewCustomRenderer::wxDataViewCustomRenderer( const wxString &varianttype,
 703                         wxDataViewCellMode mode, int align ) :
 704     wxDataViewRenderer( varianttype, mode, align )
 705 {
 706 }
 707
 708 // ---------------------------------------------------------
 709 // wxDataViewTextRenderer
 710 // ---------------------------------------------------------
 711
 712 IMPLEMENT_CLASS(wxDataViewTextRenderer, wxDataViewRenderer)
 713
 714 wxDataViewTextRenderer::wxDataViewTextRenderer( const wxString &varianttype,
 715                                                 wxDataViewCellMode mode, int align ) :
 716     wxDataViewRenderer( varianttype, mode, align )
 717 {
 718 }
 719
 720 bool wxDataViewTextRenderer::SetValue( const wxVariant &value )
 721 {
 722     m_text = value.GetString();
 723
 724     return true;
 725 }
 726
 727 bool wxDataViewTextRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 728 {
 729     return false;
 730 }
 731
 732 bool wxDataViewTextRenderer::HasEditorCtrl() const
 733 {
 734     return true;
 735 }
 736
 737 wxWindow* wxDataViewTextRenderer::CreateEditorCtrl( wxWindow *parent,
 738         wxRect labelRect, const wxVariant &value )
 739 {
 740     wxTextCtrl* ctrl = new wxTextCtrl( parent, wxID_ANY, value,
 741                                        wxPoint(labelRect.x,labelRect.y),
 742                                        wxSize(labelRect.width,labelRect.height) );
 743
 744     // select the text in the control an place the cursor at the end
 745     ctrl->SetInsertionPointEnd();
 746     ctrl->SelectAll();
 747
 748     return ctrl;
 749 }
 750
 751 bool wxDataViewTextRenderer::GetValueFromEditorCtrl( wxWindow *editor, wxVariant &value )
 752 {
 753     wxTextCtrl *text = (wxTextCtrl*) editor;
 754     value = text->GetValue();
 755     return true;
 756 }
 757
 758 bool wxDataViewTextRenderer::Render(wxRect rect, wxDC *dc, int state)
 759 {
 760     RenderText(m_text, 0, rect, dc, state);
 761     return true;
 762 }
 763
 764 wxSize wxDataViewTextRenderer::GetSize() const
 765 {
 766     if (!m_text.empty())
 767         return GetTextExtent(m_text);
 768     else
 769         return wxSize(wxDVC_DEFAULT_RENDERER_SIZE,wxDVC_DEFAULT_RENDERER_SIZE);
 770 }
 771
 772 // ---------------------------------------------------------
 773 // wxDataViewBitmapRenderer
 774 // ---------------------------------------------------------
 775
 776 IMPLEMENT_CLASS(wxDataViewBitmapRenderer, wxDataViewRenderer)
 777
 778 wxDataViewBitmapRenderer::wxDataViewBitmapRenderer( const wxString &varianttype,
 779                                                     wxDataViewCellMode mode, int align ) :
 780     wxDataViewRenderer( varianttype, mode, align )
 781 {
 782 }
 783
 784 bool wxDataViewBitmapRenderer::SetValue( const wxVariant &value )
 785 {
 786     if (value.GetType() == wxT("wxBitmap"))
 787         m_bitmap << value;
 788     if (value.GetType() == wxT("wxIcon"))
 789         m_icon << value;
 790
 791     return true;
 792 }
 793
 794 bool wxDataViewBitmapRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 795 {
 796     return false;
 797 }
 798
 799 bool wxDataViewBitmapRenderer::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
 800 {
 801     if (m_bitmap.IsOk())
 802         dc->DrawBitmap( m_bitmap, cell.x, cell.y );
 803     else if (m_icon.IsOk())
 804         dc->DrawIcon( m_icon, cell.x, cell.y );
 805
 806     return true;
 807 }
 808
 809 wxSize wxDataViewBitmapRenderer::GetSize() const
 810 {
 811     if (m_bitmap.IsOk())
 812         return wxSize( m_bitmap.GetWidth(), m_bitmap.GetHeight() );
 813     else if (m_icon.IsOk())
 814         return wxSize( m_icon.GetWidth(), m_icon.GetHeight() );
 815
 816     return wxSize(wxDVC_DEFAULT_RENDERER_SIZE,wxDVC_DEFAULT_RENDERER_SIZE);
 817 }
 818
 819 // ---------------------------------------------------------
 820 // wxDataViewToggleRenderer
 821 // ---------------------------------------------------------
 822
 823 IMPLEMENT_ABSTRACT_CLASS(wxDataViewToggleRenderer, wxDataViewRenderer)
 824
 825 wxDataViewToggleRenderer::wxDataViewToggleRenderer( const wxString &varianttype,
 826                         wxDataViewCellMode mode, int align ) :
 827     wxDataViewRenderer( varianttype, mode, align )
 828 {
 829     m_toggle = false;
 830 }
 831
 832 bool wxDataViewToggleRenderer::SetValue( const wxVariant &value )
 833 {
 834     m_toggle = value.GetBool();
 835
 836     return true;
 837 }
 838
 839 bool wxDataViewToggleRenderer::GetValue( wxVariant &WXUNUSED(value) ) const
 840 {
 841     return false;
 842 }
 843
 844 bool wxDataViewToggleRenderer::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
 845 {
 846     int flags = 0;
 847     if (m_toggle)
 848         flags |= wxCONTROL_CHECKED;
 849     if (GetMode() != wxDATAVIEW_CELL_ACTIVATABLE ||
 850         GetEnabled() == false)
 851         flags |= wxCONTROL_DISABLED;
 852
 853     // check boxes we draw must always have the same, standard size (if it's
 854     // bigger than the cell size the checkbox will be truncated because the
 855     // caller had set the clipping rectangle to prevent us from drawing outside
 856     // the cell)
 857     cell.SetSize(GetSize());
 858
 859     wxRendererNative::Get().DrawCheckBox(
 860             GetOwner()->GetOwner(),
 861             *dc,
 862             cell,
 863             flags );
 864
 865     return true;
 866 }
 867
 868 bool wxDataViewToggleRenderer::WXOnLeftClick(const wxPoint& cursor,
 869                                              const wxRect& WXUNUSED(cell),
 870                                              wxDataViewModel *model,
 871                                              const wxDataViewItem& item,
 872                                              unsigned int col)
 873 {
 874     // only react to clicks directly on the checkbox, not elsewhere in the same cell:
 875     if (!wxRect(GetSize()).Contains(cursor))
 876         return false;
 877
 878     if (model->IsEnabled(item, col))
 879     {
 880         model->ChangeValue(!m_toggle, item, col);
 881         return true;
 882     }
 883
 884     return false;
 885 }
 886
 887 wxSize wxDataViewToggleRenderer::GetSize() const
 888 {
 889     // the window parameter is not used by GetCheckBoxSize() so it's
 890     // safe to pass NULL
 891     return wxRendererNative::Get().GetCheckBoxSize(NULL);
 892 }
 893
 894 // ---------------------------------------------------------
 895 // wxDataViewProgressRenderer
 896 // ---------------------------------------------------------
 897
 898 IMPLEMENT_ABSTRACT_CLASS(wxDataViewProgressRenderer, wxDataViewRenderer)
 899
 900 wxDataViewProgressRenderer::wxDataViewProgressRenderer( const wxString &label,
 901     const wxString &varianttype, wxDataViewCellMode mode, int align ) :
 902     wxDataViewRenderer( varianttype, mode, align )
 903 {
 904     m_label = label;
 905     m_value = 0;
 906 }
 907
 908 bool wxDataViewProgressRenderer::SetValue( const wxVariant &value )
 909 {
 910     m_value = (long) value;
 911
 912     if (m_value < 0) m_value = 0;
 913     if (m_value > 100) m_value = 100;
 914
 915     return true;
 916 }
 917
 918 bool wxDataViewProgressRenderer::GetValue( wxVariant &value ) const
 919 {
 920     value = (long) m_value;
 921     return true;
 922 }
 923
 924 bool
 925 wxDataViewProgressRenderer::Render(wxRect rect, wxDC *dc, int WXUNUSED(state))
 926 {
 927     // deflate the rect to leave a small border between bars in adjacent rows
 928     wxRect bar = rect.Deflate(0, 1);
 929
 930     dc->SetBrush( *wxTRANSPARENT_BRUSH );
 931     dc->SetPen( *wxBLACK_PEN );
 932     dc->DrawRectangle( bar );
 933
 934     bar.width = (int)(bar.width * m_value / 100.);
 935     dc->SetPen( *wxTRANSPARENT_PEN );
 936
 937     const wxDataViewItemAttr& attr = GetAttr();
 938     dc->SetBrush( attr.HasColour() ? wxBrush(attr.GetColour())
 939                                   : *wxBLUE_BRUSH );
 940     dc->DrawRectangle( bar );
 941
 942     return true;
 943 }
 944
 945 wxSize wxDataViewProgressRenderer::GetSize() const
 946 {
 947     return wxSize(40,12);
 948 }
 949
 950 // ---------------------------------------------------------
 951 // wxDataViewDateRenderer
 952 // ---------------------------------------------------------
 953
 954 #define wxUSE_DATE_RENDERER_POPUP (wxUSE_CALENDARCTRL && wxUSE_POPUPWIN)
 955
 956 #if wxUSE_DATE_RENDERER_POPUP
 957
 958 class wxDataViewDateRendererPopupTransient: public wxPopupTransientWindow
 959 {
 960 public:
 961     wxDataViewDateRendererPopupTransient( wxWindow* parent, wxDateTime *value,
 962         wxDataViewModel *model, const wxDataViewItem & item, unsigned int col) :
 963         wxPopupTransientWindow( parent, wxBORDER_SIMPLE ),
 964         m_item( item )
 965     {
 966         m_model = model;
 967         m_col = col;
 968         m_cal = new wxCalendarCtrl( this, wxID_ANY, *value );
 969         wxBoxSizer *sizer = new wxBoxSizer( wxHORIZONTAL );
 970         sizer->Add( m_cal, 1, wxGROW );
 971         SetSizer( sizer );
 972         sizer->Fit( this );
 973     }
 974
 975     void OnCalendar( wxCalendarEvent &event );
 976
 977     wxCalendarCtrl      *m_cal;
 978     wxDataViewModel *m_model;
 979     unsigned int               m_col;
 980     const wxDataViewItem &   m_item;
 981
 982 protected:
 983     virtual void OnDismiss()
 984     {
 985     }
 986
 987 private:
 988     DECLARE_EVENT_TABLE()
 989 };
 990
 991 BEGIN_EVENT_TABLE(wxDataViewDateRendererPopupTransient,wxPopupTransientWindow)
 992     EVT_CALENDAR( wxID_ANY, wxDataViewDateRendererPopupTransient::OnCalendar )
 993 END_EVENT_TABLE()
 994
 995 void wxDataViewDateRendererPopupTransient::OnCalendar( wxCalendarEvent &event )
 996 {
 997     m_model->ChangeValue( event.GetDate(), m_item, m_col );
 998     DismissAndNotify();
 999 }
1000
1001 #endif // wxUSE_DATE_RENDERER_POPUP
1002
1003 IMPLEMENT_ABSTRACT_CLASS(wxDataViewDateRenderer, wxDataViewRenderer)
1004
1005 wxDataViewDateRenderer::wxDataViewDateRenderer( const wxString &varianttype,
1006                         wxDataViewCellMode mode, int align ) :
1007     wxDataViewRenderer( varianttype, mode, align )
1008 {
1009 }
1010
1011 bool wxDataViewDateRenderer::SetValue( const wxVariant &value )
1012 {
1013     m_date = value.GetDateTime();
1014
1015     return true;
1016 }
1017
1018 bool wxDataViewDateRenderer::GetValue( wxVariant &value ) const
1019 {
1020     value = m_date;
1021     return true;
1022 }
1023
1024 bool wxDataViewDateRenderer::Render( wxRect cell, wxDC *dc, int state )
1025 {
1026     wxString tmp = m_date.FormatDate();
1027     RenderText( tmp, 0, cell, dc, state );
1028     return true;
1029 }
1030
1031 wxSize wxDataViewDateRenderer::GetSize() const
1032 {
1033     return GetTextExtent(m_date.FormatDate());
1034 }
1035
1036 bool wxDataViewDateRenderer::WXOnActivate(const wxRect& WXUNUSED(cell),
1037                                           wxDataViewModel *model,
1038                                           const wxDataViewItem& item,
1039                                           unsigned int col)
1040 {
1041     wxDateTime dtOld = m_date;
1042
1043 #if wxUSE_DATE_RENDERER_POPUP
1044     wxDataViewDateRendererPopupTransient *popup = new wxDataViewDateRendererPopupTransient(
1045         GetOwner()->GetOwner()->GetParent(), &dtOld, model, item, col);
1046     wxPoint pos = wxGetMousePosition();
1047     popup->Move( pos );
1048     popup->Layout();
1049     popup->Popup( popup->m_cal );
1050 #else // !wxUSE_DATE_RENDERER_POPUP
1051     wxMessageBox(dtOld.Format());
1052 #endif // wxUSE_DATE_RENDERER_POPUP/!wxUSE_DATE_RENDERER_POPUP
1053
1054     return true;
1055 }
1056
1057 // ---------------------------------------------------------
1058 // wxDataViewIconTextRenderer
1059 // ---------------------------------------------------------
1060
1061 IMPLEMENT_CLASS(wxDataViewIconTextRenderer, wxDataViewRenderer)
1062
1063 wxDataViewIconTextRenderer::wxDataViewIconTextRenderer(
1064 const wxString &varianttype, wxDataViewCellMode mode, int align ) :
1065     wxDataViewRenderer( varianttype, mode, align )
1066 {
1067     SetMode(mode);
1068     SetAlignment(align);
1069 }
1070
1071 bool wxDataViewIconTextRenderer::SetValue( const wxVariant &value )
1072 {
1073     m_value << value;
1074     return true;
1075 }
1076
1077 bool wxDataViewIconTextRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
1078 {
1079     return false;
1080 }
1081
1082 bool wxDataViewIconTextRenderer::Render(wxRect rect, wxDC *dc, int state)
1083 {
1084     int xoffset = 0;
1085
1086     const wxIcon& icon = m_value.GetIcon();
1087     if ( icon.IsOk() )
1088     {
1089         dc->DrawIcon(icon, rect.x, rect.y + (rect.height - icon.GetHeight())/2);
1090         xoffset = icon.GetWidth()+4;
1091     }
1092
1093     RenderText(m_value.GetText(), xoffset, rect, dc, state);
1094
1095     return true;
1096 }
1097
1098 wxSize wxDataViewIconTextRenderer::GetSize() const
1099 {
1100     if (!m_value.GetText().empty())
1101     {
1102         wxSize size = GetTextExtent(m_value.GetText());
1103
1104         if (m_value.GetIcon().IsOk())
1105             size.x += m_value.GetIcon().GetWidth() + 4;
1106         return size;
1107     }
1108     return wxSize(80,20);
1109 }
1110
1111 wxWindow* wxDataViewIconTextRenderer::CreateEditorCtrl(wxWindow *parent, wxRect labelRect, const wxVariant& value)
1112 {
1113     wxDataViewIconText iconText;
1114     iconText << value;
1115
1116     wxString text = iconText.GetText();
1117
1118     // adjust the label rect to take the width of the icon into account
1119     if (iconText.GetIcon().IsOk())
1120     {
1121         int w = iconText.GetIcon().GetWidth() + 4;
1122         labelRect.x += w;
1123         labelRect.width -= w;
1124     }
1125
1126     wxTextCtrl* ctrl = new wxTextCtrl( parent, wxID_ANY, text,
1127                                        wxPoint(labelRect.x,labelRect.y),
1128                                        wxSize(labelRect.width,labelRect.height) );
1129
1130     // select the text in the control an place the cursor at the end
1131     ctrl->SetInsertionPointEnd();
1132     ctrl->SelectAll();
1133
1134     return ctrl;
1135 }
1136
1137 bool wxDataViewIconTextRenderer::GetValueFromEditorCtrl( wxWindow *editor, wxVariant& value )
1138 {
1139     wxTextCtrl *text = (wxTextCtrl*) editor;
1140
1141     wxDataViewIconText iconText(text->GetValue(), m_value.GetIcon());
1142     value << iconText;
1143     return true;
1144 }
1145
1146 //-----------------------------------------------------------------------------
1147 // wxDataViewDropTarget
1148 //-----------------------------------------------------------------------------
1149
1150 #if wxUSE_DRAG_AND_DROP
1151
1152 class wxBitmapCanvas: public wxWindow
1153 {
1154 public:
1155     wxBitmapCanvas( wxWindow *parent, const wxBitmap &bitmap, const wxSize &size ) :
1156     wxWindow( parent, wxID_ANY, wxPoint(0,0), size )
1157     {
1158         m_bitmap = bitmap;
1159         Connect( wxEVT_PAINT, wxPaintEventHandler(wxBitmapCanvas::OnPaint) );
1160     }
1161
1162     void OnPaint( wxPaintEvent &WXUNUSED(event) )
1163     {
1164         wxPaintDC dc(this);
1165         dc.DrawBitmap( m_bitmap, 0, 0);
1166     }
1167
1168     wxBitmap m_bitmap;
1169 };
1170
1171 class wxDataViewDropSource: public wxDropSource
1172 {
1173 public:
1174     wxDataViewDropSource( wxDataViewMainWindow *win, unsigned int row ) :
1175         wxDropSource( win )
1176     {
1177         m_win = win;
1178         m_row = row;
1179         m_hint = NULL;
1180     }
1181
1182     ~wxDataViewDropSource()
1183     {
1184         delete m_hint;
1185     }
1186
1187     virtual bool GiveFeedback( wxDragResult WXUNUSED(effect) )
1188     {
1189         wxPoint pos = wxGetMousePosition();
1190
1191         if (!m_hint)
1192         {
1193             int liney = m_win->GetLineStart( m_row );
1194             int linex = 0;
1195             m_win->GetOwner()->CalcUnscrolledPosition( 0, liney, NULL, &liney );
1196             m_win->ClientToScreen( &linex, &liney );
1197             m_dist_x = pos.x - linex;
1198             m_dist_y = pos.y - liney;
1199
1200             int indent = 0;
1201             wxBitmap ib = m_win->CreateItemBitmap( m_row, indent );
1202             m_dist_x -= indent;
1203             m_hint = new wxFrame( m_win->GetParent(), wxID_ANY, wxEmptyString,
1204                                         wxPoint(pos.x - m_dist_x, pos.y + 5 ),
1205                                         ib.GetSize(),
1206                                         wxFRAME_TOOL_WINDOW |
1207                                         wxFRAME_FLOAT_ON_PARENT |
1208                                         wxFRAME_NO_TASKBAR |
1209                                         wxNO_BORDER );
1210             new wxBitmapCanvas( m_hint, ib, ib.GetSize() );
1211             m_hint->Show();
1212         }
1213         else
1214         {
1215             m_hint->Move( pos.x - m_dist_x, pos.y + 5  );
1216             m_hint->SetTransparent( 128 );
1217         }
1218
1219         return false;
1220     }
1221
1222     wxDataViewMainWindow   *m_win;
1223     unsigned int            m_row;
1224     wxFrame                *m_hint;
1225     int m_dist_x,m_dist_y;
1226 };
1227
1228
1229 class wxDataViewDropTarget: public wxDropTarget
1230 {
1231 public:
1232     wxDataViewDropTarget( wxDataObject *obj, wxDataViewMainWindow *win ) :
1233         wxDropTarget( obj )
1234     {
1235         m_win = win;
1236     }
1237
1238     virtual wxDragResult OnDragOver( wxCoord x, wxCoord y, wxDragResult def )
1239     {
1240         wxDataFormat format = GetMatchingPair();
1241         if (format == wxDF_INVALID)
1242             return wxDragNone;
1243         return m_win->OnDragOver( format, x, y, def);
1244     }
1245
1246     virtual bool OnDrop( wxCoord x, wxCoord y )
1247     {
1248         wxDataFormat format = GetMatchingPair();
1249         if (format == wxDF_INVALID)
1250             return false;
1251         return m_win->OnDrop( format, x, y );
1252     }
1253
1254     virtual wxDragResult OnData( wxCoord x, wxCoord y, wxDragResult def )
1255     {
1256         wxDataFormat format = GetMatchingPair();
1257         if (format == wxDF_INVALID)
1258             return wxDragNone;
1259         if (!GetData())
1260             return wxDragNone;
1261         return m_win->OnData( format, x, y, def );
1262     }
1263
1264     virtual void OnLeave()
1265         { m_win->OnLeave(); }
1266
1267     wxDataViewMainWindow   *m_win;
1268 };
1269
1270 #endif // wxUSE_DRAG_AND_DROP
1271
1272 //-----------------------------------------------------------------------------
1273 // wxDataViewRenameTimer
1274 //-----------------------------------------------------------------------------
1275
1276 wxDataViewRenameTimer::wxDataViewRenameTimer( wxDataViewMainWindow *owner )
1277 {
1278     m_owner = owner;
1279 }
1280
1281 void wxDataViewRenameTimer::Notify()
1282 {
1283     m_owner->OnRenameTimer();
1284 }
1285
1286 //-----------------------------------------------------------------------------
1287 // wxDataViewMainWindow
1288 //-----------------------------------------------------------------------------
1289
1290 // The tree building helper, declared firstly
1291 static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
1292                              wxDataViewTreeNode * node);
1293
1294 int LINKAGEMODE wxDataViewSelectionCmp( unsigned int row1, unsigned int row2 )
1295 {
1296     if (row1 > row2) return 1;
1297     if (row1 == row2) return 0;
1298     return -1;
1299 }
1300
1301 IMPLEMENT_ABSTRACT_CLASS(wxDataViewMainWindow, wxWindow)
1302
1303 BEGIN_EVENT_TABLE(wxDataViewMainWindow,wxWindow)
1304     EVT_PAINT         (wxDataViewMainWindow::OnPaint)
1305     EVT_MOUSE_EVENTS  (wxDataViewMainWindow::OnMouse)
1306     EVT_SET_FOCUS     (wxDataViewMainWindow::OnSetFocus)
1307     EVT_KILL_FOCUS    (wxDataViewMainWindow::OnKillFocus)
1308     EVT_CHAR          (wxDataViewMainWindow::OnChar)
1309 END_EVENT_TABLE()
1310
1311 wxDataViewMainWindow::wxDataViewMainWindow( wxDataViewCtrl *parent, wxWindowID id,
1312     const wxPoint &pos, const wxSize &size, const wxString &name ) :
1313     wxWindow( parent, id, pos, size, wxWANTS_CHARS|wxBORDER_NONE, name ),
1314     m_selection( wxDataViewSelectionCmp )
1315
1316 {
1317     SetOwner( parent );
1318
1319     m_lastOnSame = false;
1320     m_renameTimer = new wxDataViewRenameTimer( this );
1321
1322     // TODO: user better initial values/nothing selected
1323     m_currentCol = NULL;
1324     m_currentRow = 0;
1325
1326     m_lineHeight = wxMax( 17, GetCharHeight() + 2 ); // 17 = mini icon height + 1
1327
1328 #if wxUSE_DRAG_AND_DROP
1329     m_dragCount = 0;
1330     m_dragStart = wxPoint(0,0);
1331
1332     m_dragEnabled = false;
1333     m_dropEnabled = false;
1334     m_dropHint = false;
1335     m_dropHintLine = (unsigned int) -1;
1336 #endif // wxUSE_DRAG_AND_DROP
1337
1338     m_lineLastClicked = (unsigned int) -1;
1339     m_lineBeforeLastClicked = (unsigned int) -1;
1340     m_lineSelectSingleOnUp = (unsigned int) -1;
1341
1342     m_hasFocus = false;
1343
1344     SetBackgroundColour( *wxWHITE );
1345
1346     SetBackgroundStyle(wxBG_STYLE_CUSTOM);
1347
1348     m_penRule = wxPen(GetRuleColour());
1349
1350     // compose a pen whichcan draw black lines
1351     // TODO: maybe there is something system colour to use
1352     m_penExpander = wxPen(wxColour(0,0,0));
1353
1354     m_root = new wxDataViewTreeNode( NULL );
1355     m_root->SetHasChildren(true);
1356
1357     // Make m_count = -1 will cause the class recaculate the real displaying number of rows.
1358     m_count = -1;
1359     m_underMouse = NULL;
1360     UpdateDisplay();
1361 }
1362
1363 wxDataViewMainWindow::~wxDataViewMainWindow()
1364 {
1365     DestroyTree();
1366     delete m_renameTimer;
1367 }
1368
1369
1370 #if wxUSE_DRAG_AND_DROP
1371 bool wxDataViewMainWindow::EnableDragSource( const wxDataFormat &format )
1372 {
1373     m_dragFormat = format;
1374     m_dragEnabled = format != wxDF_INVALID;
1375
1376     return true;
1377 }
1378
1379 bool wxDataViewMainWindow::EnableDropTarget( const wxDataFormat &format )
1380 {
1381     m_dropFormat = format;
1382     m_dropEnabled = format != wxDF_INVALID;
1383
1384     if (m_dropEnabled)
1385         SetDropTarget( new wxDataViewDropTarget( new wxCustomDataObject( format ), this ) );
1386
1387     return true;
1388 }
1389
1390 void wxDataViewMainWindow::RemoveDropHint()
1391 {
1392     if (m_dropHint)
1393     {
1394             m_dropHint = false;
1395             RefreshRow( m_dropHintLine );
1396             m_dropHintLine = (unsigned int) -1;
1397     }
1398 }
1399
1400 wxDragResult wxDataViewMainWindow::OnDragOver( wxDataFormat format, wxCoord x,
1401                                                wxCoord y, wxDragResult def )
1402 {
1403     int xx = x;
1404     int yy = y;
1405     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1406     unsigned int row = GetLineAt( yy );
1407
1408     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1409     {
1410         RemoveDropHint();
1411         return wxDragNone;
1412     }
1413
1414     wxDataViewItem item = GetItemByRow( row );
1415
1416     wxDataViewModel *model = GetOwner()->GetModel();
1417
1418     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, m_owner->GetId() );
1419     event.SetEventObject( m_owner );
1420     event.SetItem( item );
1421     event.SetModel( model );
1422     event.SetDataFormat( format );
1423     if (!m_owner->HandleWindowEvent( event ))
1424     {
1425         RemoveDropHint();
1426         return wxDragNone;
1427     }
1428
1429     if (!event.IsAllowed())
1430     {
1431         RemoveDropHint();
1432         return wxDragNone;
1433     }
1434
1435
1436     if (m_dropHint && (row != m_dropHintLine))
1437         RefreshRow( m_dropHintLine );
1438     m_dropHint = true;
1439     m_dropHintLine = row;
1440     RefreshRow( row );
1441
1442     return def;
1443 }
1444
1445 bool wxDataViewMainWindow::OnDrop( wxDataFormat format, wxCoord x, wxCoord y )
1446 {
1447     RemoveDropHint();
1448
1449     int xx = x;
1450     int yy = y;
1451     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1452     unsigned int row = GetLineAt( yy );
1453
1454     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1455         return false;
1456
1457     wxDataViewItem item = GetItemByRow( row );
1458
1459     wxDataViewModel *model = GetOwner()->GetModel();
1460
1461     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, m_owner->GetId() );
1462     event.SetEventObject( m_owner );
1463     event.SetItem( item );
1464     event.SetModel( model );
1465     event.SetDataFormat( format );
1466     if (!m_owner->HandleWindowEvent( event ))
1467         return false;
1468
1469     if (!event.IsAllowed())
1470         return false;
1471
1472     return true;
1473 }
1474
1475 wxDragResult wxDataViewMainWindow::OnData( wxDataFormat format, wxCoord x, wxCoord y,
1476                                            wxDragResult def )
1477 {
1478     int xx = x;
1479     int yy = y;
1480     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1481     unsigned int row = GetLineAt( yy );
1482
1483     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1484         return wxDragNone;
1485
1486     wxDataViewItem item = GetItemByRow( row );
1487
1488     wxDataViewModel *model = GetOwner()->GetModel();
1489
1490     wxCustomDataObject *obj = (wxCustomDataObject *) GetDropTarget()->GetDataObject();
1491
1492     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP, m_owner->GetId() );
1493     event.SetEventObject( m_owner );
1494     event.SetItem( item );
1495     event.SetModel( model );
1496     event.SetDataFormat( format );
1497     event.SetDataSize( obj->GetSize() );
1498     event.SetDataBuffer( obj->GetData() );
1499     if (!m_owner->HandleWindowEvent( event ))
1500         return wxDragNone;
1501
1502     if (!event.IsAllowed())
1503         return wxDragNone;
1504
1505     return def;
1506 }
1507
1508 void wxDataViewMainWindow::OnLeave()
1509 {
1510     RemoveDropHint();
1511 }
1512
1513 wxBitmap wxDataViewMainWindow::CreateItemBitmap( unsigned int row, int &indent )
1514 {
1515     int height = GetLineHeight( row );
1516     int width = 0;
1517     unsigned int cols = GetOwner()->GetColumnCount();
1518     unsigned int col;
1519     for (col = 0; col < cols; col++)
1520     {
1521         wxDataViewColumn *column = GetOwner()->GetColumnAt(col);
1522         if (column->IsHidden())
1523             continue;      // skip it!
1524         width += column->GetWidth();
1525     }
1526
1527     indent = 0;
1528     if (!IsList())
1529     {
1530         wxDataViewTreeNode *node = GetTreeNodeByRow(row);
1531         indent = GetOwner()->GetIndent() * node->GetIndentLevel();
1532         indent = indent + m_lineHeight;
1533             // try to use the m_lineHeight as the expander space
1534
1535         if(!node->HasChildren())
1536             delete node;
1537     }
1538     width -= indent;
1539
1540     wxBitmap bitmap( width, height );
1541     wxMemoryDC dc( bitmap );
1542     dc.SetFont( GetFont() );
1543     dc.SetPen( *wxBLACK_PEN );
1544     dc.SetBrush( *wxWHITE_BRUSH );
1545     dc.DrawRectangle( 0,0,width,height );
1546
1547     wxDataViewModel *model = m_owner->GetModel();
1548
1549     wxDataViewColumn *expander = GetOwner()->GetExpanderColumn();
1550     if (!expander)
1551     {
1552         // TODO-RTL: last column for RTL support
1553         expander = GetOwner()->GetColumnAt( 0 );
1554         GetOwner()->SetExpanderColumn(expander);
1555     }
1556
1557
1558     int x = 0;
1559     for (col = 0; col < cols; col++)
1560     {
1561         wxDataViewColumn *column = GetOwner()->GetColumnAt( col );
1562         wxDataViewRenderer *cell = column->GetRenderer();
1563
1564         if (column->IsHidden())
1565             continue;       // skip it!
1566
1567         width = column->GetWidth();
1568
1569         if (column == expander)
1570             width -= indent;
1571
1572         wxDataViewItem item = GetItemByRow( row );
1573         cell->PrepareForItem(model, item, column->GetModelColumn());
1574
1575         wxRect item_rect(x, 0, width, height);
1576         item_rect.Deflate(PADDING_RIGHTLEFT, 0);
1577
1578         // dc.SetClippingRegion( item_rect );
1579         cell->WXCallRender(item_rect, &dc, 0);
1580         // dc.DestroyClippingRegion();
1581
1582         x += width;
1583     }
1584
1585     return bitmap;
1586 }
1587
1588 #endif // wxUSE_DRAG_AND_DROP
1589
1590
1591 void wxDataViewMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
1592 {
1593     wxDataViewModel *model = GetOwner()->GetModel();
1594     wxAutoBufferedPaintDC dc( this );
1595
1596 #ifdef __WXMSW__
1597     dc.SetBrush(GetOwner()->GetBackgroundColour());
1598     dc.SetPen( *wxTRANSPARENT_PEN );
1599     dc.DrawRectangle(GetClientSize());
1600 #endif
1601
1602     if ( IsEmpty() )
1603     {
1604         // No items to draw.
1605         return;
1606     }
1607
1608     // prepare the DC
1609     GetOwner()->PrepareDC( dc );
1610     dc.SetFont( GetFont() );
1611
1612     wxRect update = GetUpdateRegion().GetBox();
1613     m_owner->CalcUnscrolledPosition( update.x, update.y, &update.x, &update.y );
1614
1615     // compute which items needs to be redrawn
1616     unsigned int item_start = GetLineAt( wxMax(0,update.y) );
1617     unsigned int item_count =
1618         wxMin( (int)(  GetLineAt( wxMax(0,update.y+update.height) ) - item_start + 1),
1619             (int)(GetRowCount( ) - item_start));
1620     unsigned int item_last = item_start + item_count;
1621
1622     // Send the event to wxDataViewCtrl itself.
1623     wxWindow * const parent = GetParent();
1624     wxDataViewEvent cache_event(wxEVT_COMMAND_DATAVIEW_CACHE_HINT, parent->GetId());
1625     cache_event.SetEventObject(parent);
1626     cache_event.SetCache(item_start, item_last - 1);
1627     parent->ProcessWindowEvent(cache_event);
1628
1629     // compute which columns needs to be redrawn
1630     unsigned int cols = GetOwner()->GetColumnCount();
1631     if ( !cols )
1632     {
1633         // we assume that we have at least one column below and painting an
1634         // empty control is unnecessary anyhow
1635         return;
1636     }
1637
1638     unsigned int col_start = 0;
1639     unsigned int x_start;
1640     for (x_start = 0; col_start < cols; col_start++)
1641     {
1642         wxDataViewColumn *col = GetOwner()->GetColumnAt(col_start);
1643         if (col->IsHidden())
1644             continue;      // skip it!
1645
1646         unsigned int w = col->GetWidth();
1647         if (x_start+w >= (unsigned int)update.x)
1648             break;
1649
1650         x_start += w;
1651     }
1652
1653     unsigned int col_last = col_start;
1654     unsigned int x_last = x_start;
1655     for (; col_last < cols; col_last++)
1656     {
1657         wxDataViewColumn *col = GetOwner()->GetColumnAt(col_last);
1658         if (col->IsHidden())
1659             continue;      // skip it!
1660
1661         if (x_last > (unsigned int)update.GetRight())
1662             break;
1663
1664         x_last += col->GetWidth();
1665     }
1666
1667     // Draw horizontal rules if required
1668     if ( m_owner->HasFlag(wxDV_HORIZ_RULES) )
1669     {
1670         dc.SetPen(m_penRule);
1671         dc.SetBrush(*wxTRANSPARENT_BRUSH);
1672
1673         for (unsigned int i = item_start; i <= item_last; i++)
1674         {
1675             int y = GetLineStart( i );
1676             dc.DrawLine(x_start, y, x_last, y);
1677         }
1678     }
1679
1680     // Draw vertical rules if required
1681     if ( m_owner->HasFlag(wxDV_VERT_RULES) )
1682     {
1683         dc.SetPen(m_penRule);
1684         dc.SetBrush(*wxTRANSPARENT_BRUSH);
1685
1686         // NB: Vertical rules are drawn in the last pixel of a column so that
1687         //     they align perfectly with native MSW wxHeaderCtrl as well as for
1688         //     consistency with MSW native list control. There's no vertical
1689         //     rule at the most-left side of the control.
1690
1691         int x = x_start - 1;
1692         for (unsigned int i = col_start; i < col_last; i++)
1693         {
1694             wxDataViewColumn *col = GetOwner()->GetColumnAt(i);
1695             if (col->IsHidden())
1696                 continue;       // skip it
1697
1698             x += col->GetWidth();
1699
1700             dc.DrawLine(x, GetLineStart( item_start ),
1701                         x, GetLineStart( item_last ) );
1702         }
1703     }
1704
1705     // redraw the background for the items which are selected/current
1706     for (unsigned int item = item_start; item < item_last; item++)
1707     {
1708         bool selected = m_selection.Index( item ) != wxNOT_FOUND;
1709         if (selected || item == m_currentRow)
1710         {
1711             int flags = selected ? (int)wxCONTROL_SELECTED : 0;
1712             if (item == m_currentRow)
1713                 flags |= wxCONTROL_CURRENT;
1714             if (m_hasFocus)
1715                 flags |= wxCONTROL_FOCUSED;
1716
1717             wxRect rect( x_start, GetLineStart( item ),
1718                          x_last - x_start, GetLineHeight( item ) );
1719             wxRendererNative::Get().DrawItemSelectionRect
1720                                 (
1721                                     this,
1722                                     dc,
1723                                     rect,
1724                                     flags
1725                                 );
1726         }
1727     }
1728
1729 #if wxUSE_DRAG_AND_DROP
1730     if (m_dropHint)
1731     {
1732         wxRect rect( x_start, GetLineStart( m_dropHintLine ),
1733                      x_last - x_start, GetLineHeight( m_dropHintLine ) );
1734         dc.SetPen( *wxBLACK_PEN );
1735         dc.SetBrush( *wxTRANSPARENT_BRUSH );
1736         dc.DrawRectangle( rect );
1737     }
1738 #endif // wxUSE_DRAG_AND_DROP
1739
1740     wxDataViewColumn *expander = GetOwner()->GetExpanderColumn();
1741     if (!expander)
1742     {
1743         // TODO-RTL: last column for RTL support
1744         expander = GetOwner()->GetColumnAt( 0 );
1745         GetOwner()->SetExpanderColumn(expander);
1746     }
1747
1748     // redraw all cells for all rows which must be repainted and all columns
1749     wxRect cell_rect;
1750     cell_rect.x = x_start;
1751     for (unsigned int i = col_start; i < col_last; i++)
1752     {
1753         wxDataViewColumn *col = GetOwner()->GetColumnAt( i );
1754         wxDataViewRenderer *cell = col->GetRenderer();
1755         cell_rect.width = col->GetWidth();
1756
1757         if ( col->IsHidden() || cell_rect.width <= 0 )
1758             continue;       // skip it!
1759
1760         for (unsigned int item = item_start; item < item_last; item++)
1761         {
1762             // get the cell value and set it into the renderer
1763             wxDataViewTreeNode *node = NULL;
1764             wxDataViewItem dataitem;
1765
1766             if (!IsVirtualList())
1767             {
1768                 node = GetTreeNodeByRow(item);
1769                 if( node == NULL )
1770                     continue;
1771
1772                 dataitem = node->GetItem();
1773
1774                 // Skip all columns of "container" rows except the expander
1775                 // column itself unless HasContainerColumns() overrides this.
1776                 if ( col != GetOwner()->GetExpanderColumn() &&
1777                         model->IsContainer(dataitem) &&
1778                             !model->HasContainerColumns(dataitem) )
1779                     continue;
1780             }
1781             else
1782             {
1783                 dataitem = wxDataViewItem( wxUIntToPtr(item+1) );
1784             }
1785
1786             cell->PrepareForItem(model, dataitem, col->GetModelColumn());
1787
1788             // update cell_rect
1789             cell_rect.y = GetLineStart( item );
1790             cell_rect.height = GetLineHeight( item );
1791
1792             // deal with the expander
1793             int indent = 0;
1794             if ((!IsList()) && (col == expander))
1795             {
1796                 // Calculate the indent first
1797                 indent = GetOwner()->GetIndent() * node->GetIndentLevel();
1798
1799                 // we reserve m_lineHeight of horizontal space for the expander
1800                 // but leave EXPANDER_MARGIN around the expander itself
1801                 int exp_x = cell_rect.x + indent + EXPANDER_MARGIN;
1802
1803                 indent += m_lineHeight;
1804
1805                 // draw expander if needed and visible
1806                 if ( node->HasChildren() && exp_x < cell_rect.GetRight() )
1807                 {
1808                     dc.SetPen( m_penExpander );
1809                     dc.SetBrush( wxNullBrush );
1810
1811                     int exp_size = m_lineHeight - 2*EXPANDER_MARGIN;
1812                     int exp_y = cell_rect.y + (cell_rect.height - exp_size)/2
1813                                    + EXPANDER_MARGIN - EXPANDER_OFFSET;
1814
1815                     const wxRect rect(exp_x, exp_y, exp_size, exp_size);
1816
1817                     int flag = 0;
1818                     if ( m_underMouse == node )
1819                         flag |= wxCONTROL_CURRENT;
1820                     if ( node->IsOpen() )
1821                         flag |= wxCONTROL_EXPANDED;
1822
1823                     // ensure that we don't overflow the cell (which might
1824                     // happen if the column is very narrow)
1825                     wxDCClipper clip(dc, cell_rect);
1826
1827                     wxRendererNative::Get().DrawTreeItemButton( this, dc, rect, flag);
1828                 }
1829
1830                 // force the expander column to left-center align
1831                 cell->SetAlignment( wxALIGN_CENTER_VERTICAL );
1832             }
1833             if (node && !node->HasChildren())
1834             {
1835                 // Yes, if the node does not have any child, it must be a leaf which
1836                 // mean that it is a temporarily created by GetTreeNodeByRow
1837                 wxDELETE(node);
1838             }
1839
1840             wxRect item_rect = cell_rect;
1841             item_rect.Deflate(PADDING_RIGHTLEFT, 0);
1842
1843             // account for the tree indent (harmless if we're not indented)
1844             item_rect.x += indent;
1845             item_rect.width -= indent;
1846
1847             if ( item_rect.width <= 0 )
1848                 continue;
1849
1850             int state = 0;
1851             if (m_hasFocus && (m_selection.Index(item) != wxNOT_FOUND))
1852                 state |= wxDATAVIEW_CELL_SELECTED;
1853
1854             // TODO: it would be much more efficient to create a clipping
1855             //       region for the entire column being rendered (in the OnPaint
1856             //       of wxDataViewMainWindow) instead of a single clip region for
1857             //       each cell. However it would mean that each renderer should
1858             //       respect the given wxRect's top & bottom coords, eventually
1859             //       violating only the left & right coords - however the user can
1860             //       make its own renderer and thus we cannot be sure of that.
1861             wxDCClipper clip(dc, item_rect);
1862
1863             cell->WXCallRender(item_rect, &dc, state);
1864         }
1865
1866         cell_rect.x += cell_rect.width;
1867     }
1868 }
1869
1870 void wxDataViewMainWindow::OnRenameTimer()
1871 {
1872     // We have to call this here because changes may just have
1873     // been made and no screen update taken place.
1874     if ( m_dirty )
1875     {
1876         // TODO: use wxTheApp->SafeYieldFor(NULL, wxEVT_CATEGORY_UI) instead
1877         //       (needs to be tested!)
1878         wxSafeYield();
1879     }
1880
1881     wxDataViewItem item = GetItemByRow( m_currentRow );
1882
1883     wxRect labelRect = GetItemRect(item, m_currentCol);
1884
1885     m_currentCol->GetRenderer()->StartEditing( item, labelRect );
1886 }
1887
1888 //-----------------------------------------------------------------------------
1889 // Helper class for do operation on the tree node
1890 //-----------------------------------------------------------------------------
1891 class DoJob
1892 {
1893 public:
1894     DoJob() { }
1895     virtual ~DoJob() { }
1896
1897     // The return value control how the tree-walker tranverse the tree
1898     // 0: Job done, stop tranverse and return
1899     // 1: Ignore the current node's subtree and continue
1900     // 2: Job not done, continue
1901     enum  { OK = 0 , IGR = 1, CONT = 2 };
1902     virtual int operator() ( wxDataViewTreeNode * node ) = 0;
1903     virtual int operator() ( void * n ) = 0;
1904 };
1905
1906 bool Walker( wxDataViewTreeNode * node, DoJob & func )
1907 {
1908     if( node==NULL )
1909         return false;
1910
1911     switch( func( node ) )
1912     {
1913         case DoJob::OK :
1914             return true;
1915         case DoJob::IGR:
1916             return false;
1917         case DoJob::CONT:
1918         default:
1919             ;
1920     }
1921
1922     const wxDataViewTreeNodes& nodes = node->GetNodes();
1923     const wxDataViewTreeLeaves& leaves = node->GetChildren();
1924
1925     int len_nodes = nodes.GetCount();
1926     int len = leaves.GetCount();
1927     int i = 0, nodes_i = 0;
1928
1929     for(; i < len; i ++ )
1930     {
1931         void * n = leaves[i];
1932         if( nodes_i < len_nodes && n == nodes[nodes_i]->GetItem().GetID() )
1933         {
1934             wxDataViewTreeNode * nd = nodes[nodes_i];
1935             nodes_i++;
1936
1937             if( Walker( nd , func ) )
1938                 return true;
1939
1940         }
1941         else
1942             switch( func( n ) )
1943             {
1944                 case DoJob::OK :
1945                     return true;
1946                 case DoJob::IGR:
1947                     continue;
1948                 case DoJob::CONT:
1949                 default:
1950                 ;
1951             }
1952     }
1953     return false;
1954 }
1955
1956 bool wxDataViewMainWindow::ItemAdded(const wxDataViewItem & parent, const wxDataViewItem & item)
1957 {
1958     GetOwner()->InvalidateColBestWidths();
1959
1960     if (IsVirtualList())
1961     {
1962         wxDataViewVirtualListModel *list_model =
1963             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
1964         m_count = list_model->GetCount();
1965         UpdateDisplay();
1966         return true;
1967     }
1968
1969     SortPrepare();
1970
1971     wxDataViewTreeNode * node;
1972     node = FindNode(parent);
1973
1974     if( node == NULL )
1975         return false;
1976
1977     node->SetHasChildren( true );
1978
1979     if( g_model->IsContainer( item ) )
1980     {
1981         wxDataViewTreeNode * newnode = new wxDataViewTreeNode( node );
1982         newnode->SetItem(item);
1983         newnode->SetHasChildren( true );
1984         node->AddNode( newnode);
1985     }
1986     else
1987         node->AddLeaf( item.GetID() );
1988
1989     node->ChangeSubTreeCount(1);
1990
1991     m_count = -1;
1992     UpdateDisplay();
1993
1994     return true;
1995 }
1996
1997 static void DestroyTreeHelper( wxDataViewTreeNode * node);
1998
1999 bool wxDataViewMainWindow::ItemDeleted(const wxDataViewItem& parent,
2000                                        const wxDataViewItem& item)
2001 {
2002     GetOwner()->InvalidateColBestWidths();
2003
2004     if (IsVirtualList())
2005     {
2006         wxDataViewVirtualListModel *list_model =
2007             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
2008         m_count = list_model->GetCount();
2009
2010         if( m_currentRow > GetRowCount() )
2011             m_currentRow = m_count - 1;
2012
2013         // TODO: why empty the entire selection?
2014         m_selection.Empty();
2015
2016         UpdateDisplay();
2017
2018         return true;
2019     }
2020
2021     wxDataViewTreeNode * node = FindNode(parent);
2022
2023     // Notice that it is possible that the item being deleted is not in the
2024     // tree at all, for example we could be deleting a never shown (because
2025     // collapsed) item in a tree model. So it's not an error if we don't know
2026     // about this item, just return without doing anything then.
2027     if ( !node || node->GetChildren().Index(item.GetID()) == wxNOT_FOUND )
2028         return false;
2029
2030     int sub = -1;
2031     node->GetChildren().Remove( item.GetID() );
2032     // Manipolate selection
2033     if( m_selection.GetCount() > 1 )
2034     {
2035         m_selection.Empty();
2036     }
2037     bool isContainer = false;
2038     wxDataViewTreeNodes nds = node->GetNodes();
2039     for (size_t i = 0; i < nds.GetCount(); i ++)
2040     {
2041         if (nds[i]->GetItem() == item)
2042         {
2043             isContainer = true;
2044             break;
2045         }
2046     }
2047     if( isContainer )
2048     {
2049         wxDataViewTreeNode * n = NULL;
2050         wxDataViewTreeNodes nodes = node->GetNodes();
2051         int len = nodes.GetCount();
2052         for( int i = 0; i < len; i ++)
2053         {
2054             if( nodes[i]->GetItem() == item )
2055             {
2056                 n = nodes[i];
2057                 break;
2058             }
2059         }
2060
2061         wxCHECK_MSG( n != NULL, false, "item not found" );
2062
2063         node->GetNodes().Remove( n );
2064         sub -= n->GetSubTreeCount();
2065         ::DestroyTreeHelper(n);
2066     }
2067     // Make the row number invalid and get a new valid one when user call GetRowCount
2068     m_count = -1;
2069     node->ChangeSubTreeCount(sub);
2070
2071     // Change the current row to the last row if the current exceed the max row number
2072     if( m_currentRow > GetRowCount() )
2073         m_currentRow = m_count - 1;
2074
2075     UpdateDisplay();
2076
2077     return true;
2078 }
2079
2080 bool wxDataViewMainWindow::ItemChanged(const wxDataViewItem & item)
2081 {
2082     GetOwner()->InvalidateColBestWidths();
2083
2084     SortPrepare();
2085     g_model->Resort();
2086
2087     // Send event
2088     wxWindow *parent = GetParent();
2089     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
2090     le.SetEventObject(parent);
2091     le.SetModel(GetOwner()->GetModel());
2092     le.SetItem(item);
2093     parent->GetEventHandler()->ProcessEvent(le);
2094
2095     return true;
2096 }
2097
2098 bool wxDataViewMainWindow::ValueChanged( const wxDataViewItem & item, unsigned int model_column )
2099 {
2100     int view_column = -1;
2101     unsigned int n_col = m_owner->GetColumnCount();
2102     for (unsigned i = 0; i < n_col; i++)
2103     {
2104         wxDataViewColumn *column = m_owner->GetColumn( i );
2105         if (column->GetModelColumn() == model_column)
2106         {
2107             view_column = (int) i;
2108             break;
2109         }
2110     }
2111     if (view_column == -1)
2112         return false;
2113
2114     GetOwner()->InvalidateColBestWidth(view_column);
2115
2116     // NOTE: to be valid, we cannot use e.g. INT_MAX - 1
2117 /*#define MAX_VIRTUAL_WIDTH       100000
2118
2119     wxRect rect( 0, row*m_lineHeight, MAX_VIRTUAL_WIDTH, m_lineHeight );
2120     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2121     Refresh( true, &rect );
2122
2123     return true;
2124 */
2125     SortPrepare();
2126     g_model->Resort();
2127
2128     // Send event
2129     wxWindow *parent = GetParent();
2130     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
2131     le.SetEventObject(parent);
2132     le.SetModel(GetOwner()->GetModel());
2133     le.SetItem(item);
2134     le.SetColumn(view_column);
2135     le.SetDataViewColumn(GetOwner()->GetColumn(view_column));
2136     parent->GetEventHandler()->ProcessEvent(le);
2137
2138     return true;
2139 }
2140
2141 bool wxDataViewMainWindow::Cleared()
2142 {
2143     GetOwner()->InvalidateColBestWidths();
2144
2145     DestroyTree();
2146     m_selection.Clear();
2147
2148     SortPrepare();
2149     BuildTree( GetOwner()->GetModel() );
2150
2151     UpdateDisplay();
2152
2153     return true;
2154 }
2155
2156 void wxDataViewMainWindow::UpdateDisplay()
2157 {
2158     m_dirty = true;
2159     m_underMouse = NULL;
2160 }
2161
2162 void wxDataViewMainWindow::OnInternalIdle()
2163 {
2164     wxWindow::OnInternalIdle();
2165
2166     if (m_dirty)
2167     {
2168         RecalculateDisplay();
2169         m_dirty = false;
2170     }
2171 }
2172
2173 void wxDataViewMainWindow::RecalculateDisplay()
2174 {
2175     wxDataViewModel *model = GetOwner()->GetModel();
2176     if (!model)
2177     {
2178         Refresh();
2179         return;
2180     }
2181
2182     int width = GetEndOfLastCol();
2183     int height = GetLineStart( GetRowCount() );
2184
2185     SetVirtualSize( width, height );
2186     GetOwner()->SetScrollRate( 10, m_lineHeight );
2187
2188     Refresh();
2189 }
2190
2191 void wxDataViewMainWindow::ScrollWindow( int dx, int dy, const wxRect *rect )
2192 {
2193     m_underMouse = NULL;
2194
2195     wxWindow::ScrollWindow( dx, dy, rect );
2196
2197     if (GetOwner()->m_headerArea)
2198         GetOwner()->m_headerArea->ScrollWindow( dx, 0 );
2199 }
2200
2201 void wxDataViewMainWindow::ScrollTo( int rows, int column )
2202 {
2203     m_underMouse = NULL;
2204
2205     int x, y;
2206     m_owner->GetScrollPixelsPerUnit( &x, &y );
2207     int sy = GetLineStart( rows )/y;
2208     int sx = 0;
2209     if( column != -1 )
2210     {
2211         wxRect rect = GetClientRect();
2212         int colnum = 0;
2213         int x_start, w = 0;
2214         int xx, yy, xe;
2215         m_owner->CalcUnscrolledPosition( rect.x, rect.y, &xx, &yy );
2216         for (x_start = 0; colnum < column; colnum++)
2217         {
2218             wxDataViewColumn *col = GetOwner()->GetColumnAt(colnum);
2219             if (col->IsHidden())
2220                 continue;      // skip it!
2221
2222             w = col->GetWidth();
2223             x_start += w;
2224         }
2225
2226         int x_end = x_start + w;
2227         xe = xx + rect.width;
2228         if( x_end > xe )
2229         {
2230             sx = ( xx + x_end - xe )/x;
2231         }
2232         if( x_start < xx )
2233         {
2234             sx = x_start/x;
2235         }
2236     }
2237     m_owner->Scroll( sx, sy );
2238 }
2239
2240 int wxDataViewMainWindow::GetCountPerPage() const
2241 {
2242     wxSize size = GetClientSize();
2243     return size.y / m_lineHeight;
2244 }
2245
2246 int wxDataViewMainWindow::GetEndOfLastCol() const
2247 {
2248     int width = 0;
2249     unsigned int i;
2250     for (i = 0; i < GetOwner()->GetColumnCount(); i++)
2251     {
2252         const wxDataViewColumn *c =
2253             const_cast<wxDataViewCtrl*>(GetOwner())->GetColumnAt( i );
2254
2255         if (!c->IsHidden())
2256             width += c->GetWidth();
2257     }
2258     return width;
2259 }
2260
2261 unsigned int wxDataViewMainWindow::GetFirstVisibleRow() const
2262 {
2263     int x = 0;
2264     int y = 0;
2265     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
2266
2267     return GetLineAt( y );
2268 }
2269
2270 unsigned int wxDataViewMainWindow::GetLastVisibleRow()
2271 {
2272     wxSize client_size = GetClientSize();
2273     m_owner->CalcUnscrolledPosition( client_size.x, client_size.y,
2274                                     &client_size.x, &client_size.y );
2275
2276     // we should deal with the pixel here
2277     unsigned int row = GetLineAt(client_size.y) - 1;
2278
2279     return wxMin( GetRowCount()-1, row );
2280 }
2281
2282 unsigned int wxDataViewMainWindow::GetRowCount()
2283 {
2284     if ( m_count == -1 )
2285     {
2286         m_count = RecalculateCount();
2287         UpdateDisplay();
2288     }
2289     return m_count;
2290 }
2291
2292 void wxDataViewMainWindow::ChangeCurrentRow( unsigned int row )
2293 {
2294     m_currentRow = row;
2295
2296     // send event
2297 }
2298
2299 void wxDataViewMainWindow::SelectAllRows( bool on )
2300 {
2301     if (IsEmpty())
2302         return;
2303
2304     if (on)
2305     {
2306         m_selection.Clear();
2307         for (unsigned int i = 0; i < GetRowCount(); i++)
2308             m_selection.Add( i );
2309         Refresh();
2310     }
2311     else
2312     {
2313         unsigned int first_visible = GetFirstVisibleRow();
2314         unsigned int last_visible = GetLastVisibleRow();
2315         unsigned int i;
2316         for (i = 0; i < m_selection.GetCount(); i++)
2317         {
2318             unsigned int row = m_selection[i];
2319             if ((row >= first_visible) && (row <= last_visible))
2320                 RefreshRow( row );
2321         }
2322         m_selection.Clear();
2323     }
2324 }
2325
2326 void wxDataViewMainWindow::SelectRow( unsigned int row, bool on )
2327 {
2328     if (m_selection.Index( row ) == wxNOT_FOUND)
2329     {
2330         if (on)
2331         {
2332             m_selection.Add( row );
2333             RefreshRow( row );
2334         }
2335     }
2336     else
2337     {
2338         if (!on)
2339         {
2340             m_selection.Remove( row );
2341             RefreshRow( row );
2342         }
2343     }
2344 }
2345
2346 void wxDataViewMainWindow::SelectRows( unsigned int from, unsigned int to, bool on )
2347 {
2348     if (from > to)
2349     {
2350         unsigned int tmp = from;
2351         from = to;
2352         to = tmp;
2353     }
2354
2355     unsigned int i;
2356     for (i = from; i <= to; i++)
2357     {
2358         if (m_selection.Index( i ) == wxNOT_FOUND)
2359         {
2360             if (on)
2361                 m_selection.Add( i );
2362         }
2363         else
2364         {
2365             if (!on)
2366                 m_selection.Remove( i );
2367         }
2368     }
2369     RefreshRows( from, to );
2370 }
2371
2372 void wxDataViewMainWindow::Select( const wxArrayInt& aSelections )
2373 {
2374     for (size_t i=0; i < aSelections.GetCount(); i++)
2375     {
2376         int n = aSelections[i];
2377
2378         m_selection.Add( n );
2379         RefreshRow( n );
2380     }
2381 }
2382
2383 void wxDataViewMainWindow::ReverseRowSelection( unsigned int row )
2384 {
2385     if (m_selection.Index( row ) == wxNOT_FOUND)
2386         m_selection.Add( row );
2387     else
2388         m_selection.Remove( row );
2389     RefreshRow( row );
2390 }
2391
2392 bool wxDataViewMainWindow::IsRowSelected( unsigned int row )
2393 {
2394     return (m_selection.Index( row ) != wxNOT_FOUND);
2395 }
2396
2397 void wxDataViewMainWindow::SendSelectionChangedEvent( const wxDataViewItem& item)
2398 {
2399     wxWindow *parent = GetParent();
2400     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED, parent->GetId());
2401
2402     le.SetEventObject(parent);
2403     le.SetModel(GetOwner()->GetModel());
2404     le.SetItem( item );
2405
2406     parent->GetEventHandler()->ProcessEvent(le);
2407 }
2408
2409 void wxDataViewMainWindow::RefreshRow( unsigned int row )
2410 {
2411     wxRect rect( 0, GetLineStart( row ), GetEndOfLastCol(), GetLineHeight( row ) );
2412     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2413
2414     wxSize client_size = GetClientSize();
2415     wxRect client_rect( 0, 0, client_size.x, client_size.y );
2416     wxRect intersect_rect = client_rect.Intersect( rect );
2417     if (intersect_rect.width > 0)
2418         Refresh( true, &intersect_rect );
2419 }
2420
2421 void wxDataViewMainWindow::RefreshRows( unsigned int from, unsigned int to )
2422 {
2423     if (from > to)
2424     {
2425         unsigned int tmp = to;
2426         to = from;
2427         from = tmp;
2428     }
2429
2430     wxRect rect( 0, GetLineStart( from ), GetEndOfLastCol(), GetLineStart( (to-from+1) ) );
2431     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2432
2433     wxSize client_size = GetClientSize();
2434     wxRect client_rect( 0, 0, client_size.x, client_size.y );
2435     wxRect intersect_rect = client_rect.Intersect( rect );
2436     if (intersect_rect.width > 0)
2437         Refresh( true, &intersect_rect );
2438 }
2439
2440 void wxDataViewMainWindow::RefreshRowsAfter( unsigned int firstRow )
2441 {
2442     wxSize client_size = GetClientSize();
2443     int start = GetLineStart( firstRow );
2444     m_owner->CalcScrolledPosition( start, 0, &start, NULL );
2445     if (start > client_size.y) return;
2446
2447     wxRect rect( 0, start, client_size.x, client_size.y - start );
2448
2449     Refresh( true, &rect );
2450 }
2451
2452 void wxDataViewMainWindow::OnArrowChar(unsigned int newCurrent, const wxKeyEvent& event)
2453 {
2454     wxCHECK_RET( newCurrent < GetRowCount(),
2455                 wxT("invalid item index in OnArrowChar()") );
2456
2457     // if there is no selection, we cannot move it anywhere
2458     if (!HasCurrentRow())
2459         return;
2460
2461     unsigned int oldCurrent = m_currentRow;
2462
2463     // in single selection we just ignore Shift as we can't select several
2464     // items anyhow
2465     if ( event.ShiftDown() && !IsSingleSel() )
2466     {
2467         RefreshRow( oldCurrent );
2468
2469         ChangeCurrentRow( newCurrent );
2470
2471         // select all the items between the old and the new one
2472         if ( oldCurrent > newCurrent )
2473         {
2474             newCurrent = oldCurrent;
2475             oldCurrent = m_currentRow;
2476         }
2477
2478         SelectRows( oldCurrent, newCurrent, true );
2479         if (oldCurrent!=newCurrent)
2480             SendSelectionChangedEvent(GetItemByRow(m_selection[0]));
2481     }
2482     else // !shift
2483     {
2484         RefreshRow( oldCurrent );
2485
2486         // all previously selected items are unselected unless ctrl is held
2487         if ( !event.ControlDown() )
2488             SelectAllRows(false);
2489
2490         ChangeCurrentRow( newCurrent );
2491
2492         if ( !event.ControlDown() )
2493         {
2494             SelectRow( m_currentRow, true );
2495             SendSelectionChangedEvent(GetItemByRow(m_currentRow));
2496         }
2497         else
2498             RefreshRow( m_currentRow );
2499     }
2500
2501     GetOwner()->EnsureVisible( m_currentRow, -1 );
2502 }
2503
2504 wxRect wxDataViewMainWindow::GetLineRect( unsigned int row ) const
2505 {
2506     wxRect rect;
2507     rect.x = 0;
2508     rect.y = GetLineStart( row );
2509     rect.width = GetEndOfLastCol();
2510     rect.height = GetLineHeight( row );
2511
2512     return rect;
2513 }
2514
2515 int wxDataViewMainWindow::GetLineStart( unsigned int row ) const
2516 {
2517     const wxDataViewModel *model = GetOwner()->GetModel();
2518
2519     if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
2520     {
2521         // TODO make more efficient
2522
2523         int start = 0;
2524
2525         unsigned int r;
2526         for (r = 0; r < row; r++)
2527         {
2528             const wxDataViewTreeNode* node = GetTreeNodeByRow(r);
2529             if (!node) return start;
2530
2531             wxDataViewItem item = node->GetItem();
2532
2533             if (node && !node->HasChildren())
2534             {
2535                 // Yes, if the node does not have any child, it must be a leaf which
2536                 // mean that it is a temporarily created by GetTreeNodeByRow
2537                 wxDELETE(node);
2538             }
2539
2540             unsigned int cols = GetOwner()->GetColumnCount();
2541             unsigned int col;
2542             int height = m_lineHeight;
2543             for (col = 0; col < cols; col++)
2544             {
2545                 const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2546                 if (column->IsHidden())
2547                     continue;      // skip it!
2548
2549                 if ((col != 0) &&
2550                     model->IsContainer(item) &&
2551                     !model->HasContainerColumns(item))
2552                     continue;      // skip it!
2553
2554                 wxDataViewRenderer *renderer =
2555                     const_cast<wxDataViewRenderer*>(column->GetRenderer());
2556                 renderer->PrepareForItem(model, item, column->GetModelColumn());
2557
2558                 height = wxMax( height, renderer->GetSize().y );
2559             }
2560
2561             start += height;
2562         }
2563
2564         return start;
2565     }
2566     else
2567     {
2568         return row * m_lineHeight;
2569     }
2570 }
2571
2572 int wxDataViewMainWindow::GetLineAt( unsigned int y ) const
2573 {
2574     const wxDataViewModel *model = GetOwner()->GetModel();
2575
2576     // check for the easy case first
2577     if ( !GetOwner()->HasFlag(wxDV_VARIABLE_LINE_HEIGHT) )
2578         return y / m_lineHeight;
2579
2580     // TODO make more efficient
2581     unsigned int row = 0;
2582     unsigned int yy = 0;
2583     for (;;)
2584     {
2585         const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
2586         if (!node)
2587         {
2588             // not really correct...
2589             return row + ((y-yy) / m_lineHeight);
2590         }
2591
2592         wxDataViewItem item = node->GetItem();
2593
2594         if (node && !node->HasChildren())
2595         {
2596             // Yes, if the node does not have any child, it must be a leaf which
2597             // mean that it is a temporarily created by GetTreeNodeByRow
2598             wxDELETE(node);
2599         }
2600
2601         unsigned int cols = GetOwner()->GetColumnCount();
2602         unsigned int col;
2603         int height = m_lineHeight;
2604         for (col = 0; col < cols; col++)
2605         {
2606             const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2607             if (column->IsHidden())
2608                 continue;      // skip it!
2609
2610             if ((col != 0) &&
2611                 model->IsContainer(item) &&
2612                 !model->HasContainerColumns(item))
2613                 continue;      // skip it!
2614
2615             wxDataViewRenderer *renderer =
2616                 const_cast<wxDataViewRenderer*>(column->GetRenderer());
2617             renderer->PrepareForItem(model, item, column->GetModelColumn());
2618
2619             height = wxMax( height, renderer->GetSize().y );
2620         }
2621
2622         yy += height;
2623         if (y < yy)
2624             return row;
2625
2626         row++;
2627     }
2628 }
2629
2630 int wxDataViewMainWindow::GetLineHeight( unsigned int row ) const
2631 {
2632     const wxDataViewModel *model = GetOwner()->GetModel();
2633
2634     if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
2635     {
2636         wxASSERT( !IsVirtualList() );
2637
2638         const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
2639         // wxASSERT( node );
2640         if (!node) return m_lineHeight;
2641
2642         wxDataViewItem item = node->GetItem();
2643
2644         if (node && !node->HasChildren())
2645         {
2646                 // Yes, if the node does not have any child, it must be a leaf which
2647                 // mean that it is a temporarily created by GetTreeNodeByRow
2648             wxDELETE(node);
2649         }
2650
2651         int height = m_lineHeight;
2652
2653         unsigned int cols = GetOwner()->GetColumnCount();
2654         unsigned int col;
2655         for (col = 0; col < cols; col++)
2656         {
2657             const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2658             if (column->IsHidden())
2659                 continue;      // skip it!
2660
2661             if ((col != 0) &&
2662                 model->IsContainer(item) &&
2663                 !model->HasContainerColumns(item))
2664                 continue;      // skip it!
2665
2666             wxDataViewRenderer *renderer =
2667                 const_cast<wxDataViewRenderer*>(column->GetRenderer());
2668             renderer->PrepareForItem(model, item, column->GetModelColumn());
2669
2670             height = wxMax( height, renderer->GetSize().y );
2671         }
2672
2673         return height;
2674     }
2675     else
2676     {
2677         return m_lineHeight;
2678     }
2679 }
2680
2681 class RowToItemJob: public DoJob
2682 {
2683 public:
2684     RowToItemJob( unsigned int row , int current )
2685         { this->row = row; this->current = current; }
2686     virtual ~RowToItemJob() {}
2687
2688     virtual int operator() ( wxDataViewTreeNode * node )
2689     {
2690         current ++;
2691         if( current == static_cast<int>(row))
2692         {
2693             ret = node->GetItem();
2694             return DoJob::OK;
2695         }
2696
2697         if( node->GetSubTreeCount() + current < static_cast<int>(row) )
2698         {
2699             current += node->GetSubTreeCount();
2700             return  DoJob::IGR;
2701         }
2702         else
2703         {
2704             // If the current has no child node, we can find the desired item of the row
2705             // number directly.
2706             // This if can speed up finding in some case, and will has a very good effect
2707             // when it comes to list view
2708             if( node->GetNodes().GetCount() == 0)
2709             {
2710                 int index = static_cast<int>(row) - current - 1;
2711                 ret = node->GetChildren().Item( index );
2712                 return DoJob::OK;
2713             }
2714             return DoJob::CONT;
2715         }
2716     }
2717
2718     virtual int operator() ( void * n )
2719     {
2720         current ++;
2721         if( current == static_cast<int>(row))
2722         {
2723             ret = wxDataViewItem( n );
2724             return DoJob::OK;
2725         }
2726         return DoJob::CONT;
2727     }
2728
2729     wxDataViewItem GetResult() const
2730         { return ret; }
2731
2732 private:
2733     unsigned int row;
2734     int current;
2735     wxDataViewItem ret;
2736 };
2737
2738 wxDataViewItem wxDataViewMainWindow::GetItemByRow(unsigned int row) const
2739 {
2740     if (IsVirtualList())
2741     {
2742         return wxDataViewItem( wxUIntToPtr(row+1) );
2743     }
2744     else
2745     {
2746         RowToItemJob job( row, -2 );
2747         Walker( m_root , job );
2748         return job.GetResult();
2749     }
2750 }
2751
2752 class RowToTreeNodeJob: public DoJob
2753 {
2754 public:
2755     RowToTreeNodeJob( unsigned int row , int current, wxDataViewTreeNode * node )
2756     {
2757         this->row = row;
2758         this->current = current;
2759         ret = NULL;
2760         parent = node;
2761     }
2762     virtual ~RowToTreeNodeJob(){ }
2763
2764     virtual int operator() ( wxDataViewTreeNode * node )
2765     {
2766         current ++;
2767         if( current == static_cast<int>(row))
2768         {
2769             ret = node;
2770             return DoJob::OK;
2771         }
2772
2773         if( node->GetSubTreeCount() + current < static_cast<int>(row) )
2774         {
2775             current += node->GetSubTreeCount();
2776             return  DoJob::IGR;
2777         }
2778         else
2779         {
2780             parent = node;
2781
2782             // If the current node has no children, we can find the desired item of the
2783             // row number directly.
2784             // This if can speed up finding in some case, and will have a very good
2785             // effect for list views.
2786             if( node->GetNodes().GetCount() == 0)
2787             {
2788                 int index = static_cast<int>(row) - current - 1;
2789                 void * n = node->GetChildren().Item( index );
2790                 ret = new wxDataViewTreeNode( parent );
2791                 ret->SetItem( wxDataViewItem( n ));
2792                 ret->SetHasChildren(false);
2793                 return DoJob::OK;
2794             }
2795             return DoJob::CONT;
2796         }
2797     }
2798
2799     virtual int operator() ( void * n )
2800     {
2801         current ++;
2802         if( current == static_cast<int>(row))
2803         {
2804             ret = new wxDataViewTreeNode( parent );
2805             ret->SetItem( wxDataViewItem( n ));
2806             ret->SetHasChildren(false);
2807             return DoJob::OK;
2808         }
2809
2810         return DoJob::CONT;
2811     }
2812
2813     wxDataViewTreeNode * GetResult() const
2814         { return ret; }
2815
2816 private:
2817     unsigned int row;
2818     int current;
2819     wxDataViewTreeNode * ret;
2820     wxDataViewTreeNode * parent;
2821 };
2822
2823 wxDataViewTreeNode * wxDataViewMainWindow::GetTreeNodeByRow(unsigned int row) const
2824 {
2825     wxASSERT( !IsVirtualList() );
2826
2827     RowToTreeNodeJob job( row , -2, m_root );
2828     Walker( m_root , job );
2829     return job.GetResult();
2830 }
2831
2832 wxDataViewEvent wxDataViewMainWindow::SendExpanderEvent( wxEventType type,
2833                                                          const wxDataViewItem & item )
2834 {
2835     wxWindow *parent = GetParent();
2836     wxDataViewEvent le(type, parent->GetId());
2837
2838     le.SetEventObject(parent);
2839     le.SetModel(GetOwner()->GetModel());
2840     le.SetItem( item );
2841
2842     parent->GetEventHandler()->ProcessEvent(le);
2843     return le;
2844 }
2845
2846 bool wxDataViewMainWindow::IsExpanded( unsigned int row ) const
2847 {
2848     if (IsList())
2849         return false;
2850
2851     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2852     if (!node)
2853         return false;
2854
2855     if (!node->HasChildren())
2856     {
2857         delete node;
2858         return false;
2859     }
2860
2861     return node->IsOpen();
2862 }
2863
2864 bool wxDataViewMainWindow::HasChildren( unsigned int row ) const
2865 {
2866     if (IsList())
2867         return false;
2868
2869     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2870     if (!node)
2871         return false;
2872
2873     if (!node->HasChildren())
2874     {
2875         delete node;
2876         return false;
2877     }
2878
2879     return true;
2880 }
2881
2882 void wxDataViewMainWindow::Expand( unsigned int row )
2883 {
2884     if (IsList())
2885         return;
2886
2887     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2888     if (!node)
2889         return;
2890
2891     if (!node->HasChildren())
2892     {
2893         delete node;
2894         return;
2895     }
2896
2897             if (!node->IsOpen())
2898             {
2899                 wxDataViewEvent e =
2900                     SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, node->GetItem());
2901
2902                 // Check if the user prevent expanding
2903                 if( e.GetSkipped() )
2904                     return;
2905
2906                 node->ToggleOpen();
2907
2908                 // build the children of current node
2909                 if( node->GetChildrenNumber() == 0 )
2910                 {
2911                     SortPrepare();
2912                     ::BuildTreeHelper(GetOwner()->GetModel(), node->GetItem(), node);
2913                 }
2914
2915                 // By expanding the node all row indices that are currently in the selection list
2916                 // and are greater than our node have become invalid. So we have to correct that now.
2917                 const unsigned rowAdjustment = node->GetSubTreeCount();
2918                 for(unsigned i=0; i<m_selection.size(); ++i)
2919                 {
2920                     const unsigned testRow = m_selection[i];
2921                     // all rows above us are not affected, so skip them
2922                     if(testRow <= row)
2923                         continue;
2924
2925                     m_selection[i] += rowAdjustment;
2926                 }
2927
2928                 if(m_currentRow > row)
2929                     ChangeCurrentRow(m_currentRow + rowAdjustment);
2930
2931                 m_count = -1;
2932                 UpdateDisplay();
2933                 // Send the expanded event
2934                 SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED,node->GetItem());
2935             }
2936 }
2937
2938 void wxDataViewMainWindow::Collapse(unsigned int row)
2939 {
2940     if (IsList())
2941         return;
2942
2943     wxDataViewTreeNode *node = GetTreeNodeByRow(row);
2944     if (!node)
2945         return;
2946
2947     if (!node->HasChildren())
2948     {
2949         delete node;
2950         return;
2951     }
2952
2953         if (node->IsOpen())
2954         {
2955             wxDataViewEvent e =
2956                 SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING,node->GetItem());
2957             if( e.GetSkipped() )
2958                 return;
2959
2960             // Find out if there are selected items below the current node.
2961             bool selectCollapsingRow = false;
2962             const unsigned rowAdjustment = node->GetSubTreeCount();
2963             unsigned maxRowToBeTested = row + rowAdjustment;
2964             for(unsigned i=0; i<m_selection.size(); ++i)
2965             {
2966                 const unsigned testRow = m_selection[i];
2967                 if(testRow > row && testRow <= maxRowToBeTested)
2968                 {
2969                     selectCollapsingRow = true;
2970                     // get out as soon as we have found a node that is selected
2971                     break;
2972                 }
2973             }
2974
2975             node->ToggleOpen();
2976
2977             // If the node to be closed has selected items the user won't see those any longer.
2978             // We select the collapsing node in this case.
2979             if(selectCollapsingRow)
2980             {
2981                 SelectAllRows(false);
2982                 ChangeCurrentRow(row);
2983                 SelectRow(row, true);
2984                 SendSelectionChangedEvent(GetItemByRow(row));
2985             }
2986             else
2987             {
2988                 // if there were no selected items below our node we still need to "fix" the
2989                 // selection list to adjust for the changing of the row indices.
2990                 // We actually do the opposite of what we are doing in Expand().
2991                 for(unsigned i=0; i<m_selection.size(); ++i)
2992                 {
2993                     const unsigned testRow = m_selection[i];
2994                     // all rows above us are not affected, so skip them
2995                     if(testRow <= row)
2996                         continue;
2997
2998                     m_selection[i] -= rowAdjustment;
2999                 }
3000
3001                 // if the "current row" is being collapsed away we change it to the current row ;-)
3002                 if(m_currentRow > row && m_currentRow <= maxRowToBeTested)
3003                     ChangeCurrentRow(row);
3004                 else if(m_currentRow > row)
3005                     ChangeCurrentRow(m_currentRow - rowAdjustment);
3006             }
3007
3008             m_count = -1;
3009             UpdateDisplay();
3010             SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED,node->GetItem());
3011         }
3012 }
3013
3014 wxDataViewTreeNode * wxDataViewMainWindow::FindNode( const wxDataViewItem & item )
3015 {
3016     const wxDataViewModel * model = GetOwner()->GetModel();
3017     if( model == NULL )
3018         return NULL;
3019
3020     if (!item.IsOk())
3021         return m_root;
3022
3023     // Compose the parent-chain for the item we are looking for
3024     wxVector<wxDataViewItem> parentChain;
3025     wxDataViewItem it( item );
3026     while( it.IsOk() )
3027     {
3028         parentChain.push_back(it);
3029         it = model->GetParent(it);
3030     }
3031
3032     // Find the item along the parent-chain.
3033     // This algorithm is designed to speed up the node-finding method
3034     wxDataViewTreeNode* node = m_root;
3035     for( unsigned iter = parentChain.size()-1; ; --iter )
3036     {
3037         if( node->HasChildren() )
3038         {
3039             if( node->GetChildrenNumber() == 0 )
3040             {
3041                 SortPrepare();
3042                 ::BuildTreeHelper(model, node->GetItem(), node);
3043             }
3044
3045             const wxDataViewTreeNodes& nodes = node->GetNodes();
3046             bool found = false;
3047
3048             for (unsigned i = 0; i < nodes.GetCount(); ++i)
3049             {
3050                 wxDataViewTreeNode* currentNode = nodes[i];
3051                 if (currentNode->GetItem() == parentChain[iter])
3052                 {
3053                     if (currentNode->GetItem() == item)
3054                         return currentNode;
3055
3056                     node = currentNode;
3057                     found = true;
3058                     break;
3059                 }
3060             }
3061             if (!found)
3062                 return NULL;
3063         }
3064         else
3065             return NULL;
3066
3067         if ( !iter )
3068             break;
3069     }
3070     return NULL;
3071 }
3072
3073 void wxDataViewMainWindow::HitTest( const wxPoint & point, wxDataViewItem & item,
3074                                     wxDataViewColumn* &column )
3075 {
3076     wxDataViewColumn *col = NULL;
3077     unsigned int cols = GetOwner()->GetColumnCount();
3078     unsigned int colnum = 0;
3079     int x, y;
3080     m_owner->CalcUnscrolledPosition( point.x, point.y, &x, &y );
3081     for (unsigned x_start = 0; colnum < cols; colnum++)
3082     {
3083         col = GetOwner()->GetColumnAt(colnum);
3084         if (col->IsHidden())
3085             continue;      // skip it!
3086
3087         unsigned int w = col->GetWidth();
3088         if (x_start+w >= (unsigned int)x)
3089             break;
3090
3091         x_start += w;
3092     }
3093
3094     column = col;
3095     item = GetItemByRow( GetLineAt( y ) );
3096 }
3097
3098 wxRect wxDataViewMainWindow::GetItemRect( const wxDataViewItem & item,
3099                                           const wxDataViewColumn* column )
3100 {
3101     int xpos = 0;
3102     int width = 0;
3103
3104     unsigned int cols = GetOwner()->GetColumnCount();
3105     // If column is null the loop will compute the combined width of all columns.
3106     // Otherwise, it will compute the x position of the column we are looking for.
3107     for (unsigned int i = 0; i < cols; i++)
3108     {
3109         wxDataViewColumn* col = GetOwner()->GetColumnAt( i );
3110
3111         if (col == column)
3112             break;
3113
3114         if (col->IsHidden())
3115             continue;      // skip it!
3116
3117         xpos += col->GetWidth();
3118         width += col->GetWidth();
3119     }
3120
3121     if(column != 0)
3122     {
3123         // If we have a column, we need can get its width directly.
3124         if(column->IsHidden())
3125             width = 0;
3126         else
3127             width = column->GetWidth();
3128
3129     }
3130     else
3131     {
3132         // If we have no column, we reset the x position back to zero.
3133         xpos = 0;
3134     }
3135
3136     // we have to take an expander column into account and compute its indentation
3137     // to get the correct x position where the actual text is
3138     int indent = 0;
3139     int row = GetRowByItem(item);
3140     if (!IsList() && (column == 0 || GetOwner()->GetExpanderColumn() == column) )
3141     {
3142         wxDataViewTreeNode* node = GetTreeNodeByRow(row);
3143         indent = GetOwner()->GetIndent() * node->GetIndentLevel();
3144         indent = indent + m_lineHeight; // use m_lineHeight as the width of the expander
3145
3146         if(!node->HasChildren())
3147             delete node;
3148     }
3149
3150     wxRect itemRect( xpos + indent,
3151                      GetLineStart( row ),
3152                      width - indent,
3153                      GetLineHeight( row ) );
3154
3155     GetOwner()->CalcScrolledPosition(  itemRect.x,  itemRect.y,
3156                                       &itemRect.x, &itemRect.y );
3157
3158     return itemRect;
3159 }
3160
3161 int wxDataViewMainWindow::RecalculateCount()
3162 {
3163     if (IsVirtualList())
3164     {
3165         wxDataViewVirtualListModel *list_model =
3166             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
3167
3168         return list_model->GetCount();
3169     }
3170     else
3171     {
3172         return m_root->GetSubTreeCount();
3173     }
3174 }
3175
3176 class ItemToRowJob : public DoJob
3177 {
3178 public:
3179     ItemToRowJob(const wxDataViewItem& item_, wxVector<wxDataViewItem>::reverse_iterator iter)
3180         : m_iter(iter),
3181         item(item_)
3182     {
3183         ret = -1;
3184     }
3185
3186     // Maybe binary search will help to speed up this process
3187     virtual int operator() ( wxDataViewTreeNode * node)
3188     {
3189         ret ++;
3190         if( node->GetItem() == item )
3191         {
3192             return DoJob::OK;
3193         }
3194
3195         if( node->GetItem() == *m_iter )
3196         {
3197             m_iter++;
3198             return DoJob::CONT;
3199         }
3200         else
3201         {
3202             ret += node->GetSubTreeCount();
3203             return DoJob::IGR;
3204         }
3205
3206     }
3207
3208     virtual int operator() ( void * n )
3209     {
3210         ret ++;
3211         if( n == item.GetID() )
3212             return DoJob::OK;
3213         return DoJob::CONT;
3214     }
3215
3216     // the row number is begin from zero
3217     int GetResult() const
3218         { return ret -1; }
3219
3220 private:
3221     wxVector<wxDataViewItem>::reverse_iterator m_iter;
3222     wxDataViewItem item;
3223     int ret;
3224
3225 };
3226
3227 int wxDataViewMainWindow::GetRowByItem(const wxDataViewItem & item) const
3228 {
3229     const wxDataViewModel * model = GetOwner()->GetModel();
3230     if( model == NULL )
3231         return -1;
3232
3233     if (IsVirtualList())
3234     {
3235         return wxPtrToUInt( item.GetID() ) -1;
3236     }
3237     else
3238     {
3239         if( !item.IsOk() )
3240             return -1;
3241
3242         // Compose the parent-chain of the item we are looking for
3243         wxVector<wxDataViewItem> parentChain;
3244         wxDataViewItem it( item );
3245         while( it.IsOk() )
3246         {
3247             parentChain.push_back(it);
3248             it = model->GetParent(it);
3249         }
3250
3251         // add an 'invalid' item to represent our 'invisible' root node
3252         parentChain.push_back(wxDataViewItem());
3253
3254         // the parent chain was created by adding the deepest parent first.
3255         // so if we want to start at the root node, we have to iterate backwards through the vector
3256         ItemToRowJob job( item, parentChain.rbegin() );
3257         Walker( m_root, job );
3258         return job.GetResult();
3259     }
3260 }
3261
3262 static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
3263                              wxDataViewTreeNode * node)
3264 {
3265     if( !model->IsContainer( item ) )
3266         return;
3267
3268     wxDataViewItemArray children;
3269     unsigned int num = model->GetChildren( item, children);
3270
3271     unsigned int index = 0;
3272     while( index < num )
3273     {
3274         if( model->IsContainer( children[index] ) )
3275         {
3276             wxDataViewTreeNode * n = new wxDataViewTreeNode( node );
3277             n->SetItem(children[index]);
3278             n->SetHasChildren( true );
3279             node->AddNode( n );
3280         }
3281         else
3282         {
3283             node->AddLeaf( children[index].GetID() );
3284         }
3285         index ++;
3286     }
3287     node->SetSubTreeCount( num );
3288     wxDataViewTreeNode * n = node->GetParent();
3289     if( n != NULL)
3290         n->ChangeSubTreeCount(num);
3291
3292 }
3293
3294 void wxDataViewMainWindow::BuildTree(wxDataViewModel * model)
3295 {
3296     DestroyTree();
3297
3298     if (GetOwner()->GetModel()->IsVirtualListModel())
3299     {
3300         m_count = -1;
3301         return;
3302     }
3303
3304     m_root = new wxDataViewTreeNode( NULL );
3305     m_root->SetHasChildren(true);
3306
3307     // First we define a invalid item to fetch the top-level elements
3308     wxDataViewItem item;
3309     SortPrepare();
3310     BuildTreeHelper( model, item, m_root);
3311     m_count = -1;
3312 }
3313
3314 static void DestroyTreeHelper( wxDataViewTreeNode * node )
3315 {
3316     if( node->GetNodeNumber() != 0 )
3317     {
3318         int len = node->GetNodeNumber();
3319         wxDataViewTreeNodes& nodes = node->GetNodes();
3320         for (int i = 0; i < len; i++)
3321             DestroyTreeHelper(nodes[i]);
3322     }
3323     delete node;
3324 }
3325
3326 void wxDataViewMainWindow::DestroyTree()
3327 {
3328     if (!IsVirtualList())
3329     {
3330         ::DestroyTreeHelper(m_root);
3331             m_count = 0;
3332             m_root = NULL;
3333     }
3334 }
3335
3336 void wxDataViewMainWindow::OnChar( wxKeyEvent &event )
3337 {
3338     wxWindow * const parent = GetParent();
3339
3340     // propagate the char event upwards
3341     wxKeyEvent eventForParent(event);
3342     eventForParent.SetEventObject(parent);
3343     if ( parent->ProcessWindowEvent(eventForParent) )
3344         return;
3345
3346     if ( parent->HandleAsNavigationKey(event) )
3347         return;
3348
3349     // no item -> nothing to do
3350     if (!HasCurrentRow())
3351     {
3352         event.Skip();
3353         return;
3354     }
3355
3356     // don't use m_linesPerPage directly as it might not be computed yet
3357     const int pageSize = GetCountPerPage();
3358     wxCHECK_RET( pageSize, wxT("should have non zero page size") );
3359
3360     switch ( event.GetKeyCode() )
3361     {
3362         case WXK_RETURN:
3363             {
3364                 wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED,
3365                                    parent->GetId());
3366                 le.SetItem( GetItemByRow(m_currentRow) );
3367                 le.SetEventObject(parent);
3368                 le.SetModel(GetOwner()->GetModel());
3369
3370                 parent->GetEventHandler()->ProcessEvent(le);
3371             }
3372             break;
3373
3374         case WXK_UP:
3375             if ( m_currentRow > 0 )
3376                 OnArrowChar( m_currentRow - 1, event );
3377             break;
3378
3379         case WXK_DOWN:
3380             if ( m_currentRow + 1 < GetRowCount() )
3381                 OnArrowChar( m_currentRow + 1, event );
3382             break;
3383         // Add the process for tree expanding/collapsing
3384         case WXK_LEFT:
3385         {
3386             if (IsList())
3387                break;
3388
3389             wxDataViewTreeNode* node = GetTreeNodeByRow(m_currentRow);
3390             if (!node)
3391                 break;
3392
3393             if (node->HasChildren() && node->IsOpen())
3394             {
3395                 Collapse(m_currentRow);
3396             }
3397             else    // if the node is already closed we move the selection to its parent
3398             {
3399                 wxDataViewTreeNode *parent_node = node->GetParent();
3400
3401                 if(!node->HasChildren())
3402                     delete node;
3403
3404                 if (parent_node)
3405                 {
3406                     int parent = GetRowByItem( parent_node->GetItem() );
3407                     if ( parent >= 0 )
3408                     {
3409                         unsigned int row = m_currentRow;
3410                         SelectRow( row, false);
3411                         SelectRow( parent, true );
3412                         ChangeCurrentRow( parent );
3413                         GetOwner()->EnsureVisible( parent, -1 );
3414                         SendSelectionChangedEvent( parent_node->GetItem() );
3415                     }
3416                 }
3417             }
3418             break;
3419         }
3420         case WXK_RIGHT:
3421         {
3422             if (!IsExpanded( m_currentRow ))
3423                 Expand( m_currentRow );
3424             else
3425             {
3426                 unsigned int row = m_currentRow;
3427                 SelectRow( row, false );
3428                 SelectRow( row + 1, true );
3429                 ChangeCurrentRow( row + 1 );
3430                 GetOwner()->EnsureVisible( row + 1, -1 );
3431                 SendSelectionChangedEvent( GetItemByRow(row+1) );
3432             }
3433             break;
3434         }
3435         case WXK_END:
3436         {
3437             if (!IsEmpty())
3438                 OnArrowChar( GetRowCount() - 1, event );
3439             break;
3440         }
3441         case WXK_HOME:
3442             if (!IsEmpty())
3443                 OnArrowChar( 0, event );
3444             break;
3445
3446         case WXK_PAGEUP:
3447             {
3448                 int steps = pageSize - 1;
3449                 int index = m_currentRow - steps;
3450                 if (index < 0)
3451                     index = 0;
3452
3453                 OnArrowChar( index, event );
3454             }
3455             break;
3456
3457         case WXK_PAGEDOWN:
3458             {
3459                 int steps = pageSize - 1;
3460                 unsigned int index = m_currentRow + steps;
3461                 unsigned int count = GetRowCount();
3462                 if ( index >= count )
3463                     index = count - 1;
3464
3465                 OnArrowChar( index, event );
3466             }
3467             break;
3468
3469         case WXK_F2:
3470             {
3471                 if(m_selection.size() == 1)
3472                 {
3473                     // TODO: we need to revise that when we have a concept for a 'current column'
3474                     GetOwner()->StartEditor(GetItemByRow(m_selection[0]), 0);
3475                 }
3476             }
3477             break;
3478
3479         default:
3480             event.Skip();
3481     }
3482 }
3483
3484 void wxDataViewMainWindow::OnMouse( wxMouseEvent &event )
3485 {
3486     if (event.GetEventType() == wxEVT_MOUSEWHEEL)
3487     {
3488         // let the base handle mouse wheel events.
3489         event.Skip();
3490         return;
3491     }
3492
3493     // set the focus to ourself if any of the mouse buttons are pressed
3494     if(event.ButtonDown() && !HasFocus())
3495         SetFocus();
3496
3497     int x = event.GetX();
3498     int y = event.GetY();
3499     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
3500     wxDataViewColumn *col = NULL;
3501
3502     int xpos = 0;
3503     unsigned int cols = GetOwner()->GetColumnCount();
3504     unsigned int i;
3505     for (i = 0; i < cols; i++)
3506     {
3507         wxDataViewColumn *c = GetOwner()->GetColumnAt( i );
3508         if (c->IsHidden())
3509             continue;      // skip it!
3510
3511         if (x < xpos + c->GetWidth())
3512         {
3513             col = c;
3514             break;
3515         }
3516         xpos += c->GetWidth();
3517     }
3518     if (!col)
3519     {
3520         event.Skip();
3521         return;
3522     }
3523
3524     wxDataViewRenderer *cell = col->GetRenderer();
3525     unsigned int current = GetLineAt( y );
3526     if ((current >= GetRowCount()) || (x > GetEndOfLastCol()))
3527     {
3528         // Unselect all if below the last row ?
3529         event.Skip();
3530         return;
3531     }
3532
3533     // Test whether the mouse is hovered on the tree item button
3534     bool hoverOverExpander = false;
3535     if ((!IsList()) && (GetOwner()->GetExpanderColumn() == col))
3536     {
3537         wxDataViewTreeNode * node = GetTreeNodeByRow(current);
3538         if( node!=NULL && node->HasChildren() )
3539         {
3540             int indent = node->GetIndentLevel();
3541             indent = GetOwner()->GetIndent()*indent;
3542
3543             // we make the rectangle we are looking in a bit bigger than the actual
3544             // visual expander so the user can hit that little thing reliably
3545             wxRect rect( xpos + indent,
3546                         GetLineStart( current ) + (GetLineHeight(current) - m_lineHeight)/2,
3547                         m_lineHeight, m_lineHeight);
3548             if( rect.Contains(x, y) )
3549             {
3550                 // So the mouse is over the expander
3551                 hoverOverExpander = true;
3552                 if (m_underMouse && m_underMouse != node)
3553                 {
3554                     // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
3555                     RefreshRow(GetRowByItem(m_underMouse->GetItem()));
3556                 }
3557                 if (m_underMouse != node)
3558                 {
3559                     // wxLogMessage("Do the row: %d", current);
3560                     RefreshRow(current);
3561                 }
3562                 m_underMouse = node;
3563             }
3564         }
3565         if (node!=NULL && !node->HasChildren())
3566             delete node;
3567     }
3568     if (!hoverOverExpander)
3569     {
3570         if (m_underMouse != NULL)
3571         {
3572             // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
3573             RefreshRow(GetRowByItem(m_underMouse->GetItem()));
3574             m_underMouse = NULL;
3575         }
3576     }
3577
3578     wxDataViewModel *model = GetOwner()->GetModel();
3579
3580 #if wxUSE_DRAG_AND_DROP
3581     if (event.Dragging())
3582     {
3583         if (m_dragCount == 0)
3584         {
3585             // we have to report the raw, physical coords as we want to be
3586             // able to call HitTest(event.m_pointDrag) from the user code to
3587             // get the item being dragged
3588             m_dragStart = event.GetPosition();
3589         }
3590
3591         m_dragCount++;
3592
3593         if (m_dragCount != 3)
3594             return;
3595
3596         if (event.LeftIsDown())
3597         {
3598             m_owner->CalcUnscrolledPosition( m_dragStart.x, m_dragStart.y,
3599                                              &m_dragStart.x, &m_dragStart.y );
3600             unsigned int drag_item_row = GetLineAt( m_dragStart.y );
3601             wxDataViewItem item = GetItemByRow( drag_item_row );
3602
3603             // Notify cell about drag
3604             wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_BEGIN_DRAG, m_owner->GetId() );
3605             event.SetEventObject( m_owner );
3606             event.SetItem( item );
3607             event.SetModel( model );
3608             if (!m_owner->HandleWindowEvent( event ))
3609                 return;
3610
3611             if (!event.IsAllowed())
3612                 return;
3613
3614             wxDataObject *obj = event.GetDataObject();
3615             if (!obj)
3616                 return;
3617
3618             wxDataViewDropSource drag( this, drag_item_row );
3619             drag.SetData( *obj );
3620             /* wxDragResult res = */ drag.DoDragDrop();
3621             delete obj;
3622         }
3623         return;
3624     }
3625     else
3626     {
3627         m_dragCount = 0;
3628     }
3629 #endif // wxUSE_DRAG_AND_DROP
3630
3631     bool simulateClick = false;
3632
3633     if (event.ButtonDClick())
3634     {
3635         m_renameTimer->Stop();
3636         m_lastOnSame = false;
3637     }
3638
3639     wxDataViewItem item = GetItemByRow(current);
3640     bool ignore_other_columns =
3641         ((GetOwner()->GetExpanderColumn() != col) &&
3642         (model->IsContainer(item)) &&
3643         (!model->HasContainerColumns(item)));
3644
3645     if (event.LeftDClick())
3646     {
3647         if(hoverOverExpander)
3648         {
3649             // a double click on the expander will be converted into a "simulated" normal click
3650             simulateClick = true;
3651         }
3652         else if ( current == m_lineLastClicked )
3653         {
3654             if ((!ignore_other_columns) && (cell->GetMode() == wxDATAVIEW_CELL_ACTIVATABLE))
3655             {
3656                 const unsigned colIdx = col->GetModelColumn();
3657
3658                 cell->PrepareForItem(model, item, colIdx);
3659
3660                 wxRect cell_rect( xpos, GetLineStart( current ),
3661                                 col->GetWidth(), GetLineHeight( current ) );
3662                 cell->WXOnActivate( cell_rect, model, item, colIdx );
3663             }
3664             else
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(GetOwner()->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(GetOwner()->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, GetLineStart( current ),
3839                               col->GetWidth(), GetLineHeight( current ) );
3840
3841             // Report position relative to the cell's custom area, i.e.
3842             // no the entire space as given by the control but the one
3843             // used by the renderer after calculation of alignment etc.
3844
3845             // adjust the rectangle ourselves to account for the alignment
3846             wxRect rectItem = cell_rect;
3847             const int align = cell->GetAlignment();
3848             if ( align != wxDVR_DEFAULT_ALIGNMENT )
3849             {
3850                 const wxSize size = cell->GetSize();
3851
3852                 if ( size.x >= 0 && size.x < cell_rect.width )
3853                 {
3854                     if ( align & wxALIGN_CENTER_HORIZONTAL )
3855                         rectItem.x += (cell_rect.width - size.x)/2;
3856                     else if ( align & wxALIGN_RIGHT )
3857                         rectItem.x += cell_rect.width - size.x;
3858                     // else: wxALIGN_LEFT is the default
3859                 }
3860
3861                 if ( size.y >= 0 && size.y < cell_rect.height )
3862                 {
3863                     if ( align & wxALIGN_CENTER_VERTICAL )
3864                         rectItem.y += (cell_rect.height - size.y)/2;
3865                     else if ( align & wxALIGN_BOTTOM )
3866                         rectItem.y += cell_rect.height - size.y;
3867                     // else: wxALIGN_TOP is the default
3868                 }
3869             }
3870
3871             wxPoint pos( event.GetPosition() );
3872             pos.x -= rectItem.x;
3873             pos.y -= rectItem.y;
3874
3875             m_owner->CalcUnscrolledPosition( pos.x, pos.y, &pos.x, &pos.y );
3876
3877              /* ignore ret */ cell->WXOnLeftClick( pos, cell_rect,
3878                               model, item, col->GetModelColumn());
3879         }
3880     }
3881 }
3882
3883 void wxDataViewMainWindow::OnSetFocus( wxFocusEvent &event )
3884 {
3885     m_hasFocus = true;
3886
3887     if (HasCurrentRow())
3888         Refresh();
3889
3890     event.Skip();
3891 }
3892
3893 void wxDataViewMainWindow::OnKillFocus( wxFocusEvent &event )
3894 {
3895     m_hasFocus = false;
3896
3897     if (HasCurrentRow())
3898         Refresh();
3899
3900     event.Skip();
3901 }
3902
3903 wxDataViewItem wxDataViewMainWindow::GetSelection() const
3904 {
3905     if( m_selection.GetCount() != 1 )
3906         return wxDataViewItem();
3907
3908     return GetItemByRow( m_selection.Item(0));
3909 }
3910
3911 //-----------------------------------------------------------------------------
3912 // wxDataViewCtrl
3913 //-----------------------------------------------------------------------------
3914
3915 WX_DEFINE_LIST(wxDataViewColumnList)
3916
3917 IMPLEMENT_DYNAMIC_CLASS(wxDataViewCtrl, wxDataViewCtrlBase)
3918 BEGIN_EVENT_TABLE(wxDataViewCtrl, wxDataViewCtrlBase)
3919     EVT_SIZE(wxDataViewCtrl::OnSize)
3920 END_EVENT_TABLE()
3921
3922 wxDataViewCtrl::~wxDataViewCtrl()
3923 {
3924     if (m_notifier)
3925         GetModel()->RemoveNotifier( m_notifier );
3926
3927     m_cols.Clear();
3928     m_colsBestWidths.clear();
3929 }
3930
3931 void wxDataViewCtrl::Init()
3932 {
3933     m_cols.DeleteContents(true);
3934     m_notifier = NULL;
3935
3936     // No sorting column at start
3937     m_sortingColumnIdx = wxNOT_FOUND;
3938
3939     m_headerArea = NULL;
3940 }
3941
3942 bool wxDataViewCtrl::Create(wxWindow *parent,
3943                             wxWindowID id,
3944                             const wxPoint& pos,
3945                             const wxSize& size,
3946                             long style,
3947                             const wxValidator& validator,
3948                             const wxString& name)
3949 {
3950 //    if ( (style & wxBORDER_MASK) == 0)
3951 //        style |= wxBORDER_SUNKEN;
3952
3953     Init();
3954
3955     if (!wxControl::Create( parent, id, pos, size,
3956                             style | wxScrolledWindowStyle, validator, name))
3957         return false;
3958
3959     SetInitialSize(size);
3960
3961 #ifdef __WXMAC__
3962     MacSetClipChildren( true );
3963 #endif
3964
3965     m_clientArea = new wxDataViewMainWindow( this, wxID_ANY );
3966
3967     // We use the cursor keys for moving the selection, not scrolling, so call
3968     // this method to ensure wxScrollHelperEvtHandler doesn't catch all
3969     // keyboard events forwarded to us from wxListMainWindow.
3970     DisableKeyboardScrolling();
3971
3972     if (HasFlag(wxDV_NO_HEADER))
3973         m_headerArea = NULL;
3974     else
3975         m_headerArea = new wxDataViewHeaderWindow(this);
3976
3977     SetTargetWindow( m_clientArea );
3978
3979     wxBoxSizer *sizer = new wxBoxSizer( wxVERTICAL );
3980     if (m_headerArea)
3981         sizer->Add( m_headerArea, 0, wxGROW );
3982     sizer->Add( m_clientArea, 1, wxGROW );
3983     SetSizer( sizer );
3984
3985     return true;
3986 }
3987
3988 wxBorder wxDataViewCtrl::GetDefaultBorder() const
3989 {
3990     return wxBORDER_THEME;
3991 }
3992
3993 #ifdef __WXMSW__
3994 WXLRESULT wxDataViewCtrl::MSWWindowProc(WXUINT nMsg,
3995                                         WXWPARAM wParam,
3996                                         WXLPARAM lParam)
3997 {
3998     WXLRESULT rc = wxDataViewCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
3999
4000 #ifndef __WXWINCE__
4001     // we need to process arrows ourselves for scrolling
4002     if ( nMsg == WM_GETDLGCODE )
4003     {
4004         rc |= DLGC_WANTARROWS;
4005     }
4006 #endif
4007
4008     return rc;
4009 }
4010 #endif
4011
4012 wxSize wxDataViewCtrl::GetSizeAvailableForScrollTarget(const wxSize& size)
4013 {
4014     wxSize newsize = size;
4015     if (!HasFlag(wxDV_NO_HEADER) && (m_headerArea))
4016     newsize.y -= m_headerArea->GetSize().y;
4017
4018     return newsize;
4019 }
4020
4021 void wxDataViewCtrl::OnSize( wxSizeEvent &WXUNUSED(event) )
4022 {
4023     // We need to override OnSize so that our scrolled
4024     // window a) does call Layout() to use sizers for
4025     // positioning the controls but b) does not query
4026     // the sizer for their size and use that for setting
4027     // the scrollable area as set that ourselves by
4028     // calling SetScrollbar() further down.
4029
4030     Layout();
4031
4032     AdjustScrollbars();
4033
4034     // We must redraw the headers if their height changed. Normally this
4035     // shouldn't happen as the control shouldn't let itself be resized beneath
4036     // its minimal height but avoid the display artefacts that appear if it
4037     // does happen, e.g. because there is really not enough vertical space.
4038     if ( !HasFlag(wxDV_NO_HEADER) && m_headerArea &&
4039             m_headerArea->GetSize().y <= m_headerArea->GetBestSize(). y )
4040     {
4041         m_headerArea->Refresh();
4042     }
4043 }
4044
4045 void wxDataViewCtrl::SetFocus()
4046 {
4047     if (m_clientArea)
4048         m_clientArea->SetFocus();
4049 }
4050
4051 bool wxDataViewCtrl::AssociateModel( wxDataViewModel *model )
4052 {
4053     if (!wxDataViewCtrlBase::AssociateModel( model ))
4054         return false;
4055
4056     m_notifier = new wxGenericDataViewModelNotifier( m_clientArea );
4057
4058     model->AddNotifier( m_notifier );
4059
4060     m_clientArea->DestroyTree();
4061
4062     m_clientArea->BuildTree(model);
4063
4064     m_clientArea->UpdateDisplay();
4065
4066     return true;
4067 }
4068
4069 #if wxUSE_DRAG_AND_DROP
4070
4071 bool wxDataViewCtrl::EnableDragSource( const wxDataFormat &format )
4072 {
4073     return m_clientArea->EnableDragSource( format );
4074 }
4075
4076 bool wxDataViewCtrl::EnableDropTarget( const wxDataFormat &format )
4077 {
4078     return m_clientArea->EnableDropTarget( format );
4079 }
4080
4081 #endif // wxUSE_DRAG_AND_DROP
4082
4083 bool wxDataViewCtrl::AppendColumn( wxDataViewColumn *col )
4084 {
4085     if (!wxDataViewCtrlBase::AppendColumn(col))
4086         return false;
4087
4088     m_cols.Append( col );
4089     m_colsBestWidths.push_back(0);
4090     OnColumnsCountChanged();
4091     return true;
4092 }
4093
4094 bool wxDataViewCtrl::PrependColumn( wxDataViewColumn *col )
4095 {
4096     if (!wxDataViewCtrlBase::PrependColumn(col))
4097         return false;
4098
4099     m_cols.Insert( col );
4100     m_colsBestWidths.insert(m_colsBestWidths.begin(), 0);
4101     OnColumnsCountChanged();
4102     return true;
4103 }
4104
4105 bool wxDataViewCtrl::InsertColumn( unsigned int pos, wxDataViewColumn *col )
4106 {
4107     if (!wxDataViewCtrlBase::InsertColumn(pos,col))
4108         return false;
4109
4110     m_cols.Insert( pos, col );
4111     m_colsBestWidths.insert(m_colsBestWidths.begin() + pos, 0);
4112     OnColumnsCountChanged();
4113     return true;
4114 }
4115
4116 void wxDataViewCtrl::OnColumnChange(unsigned int idx)
4117 {
4118     if ( m_headerArea )
4119         m_headerArea->UpdateColumn(idx);
4120
4121     m_clientArea->UpdateDisplay();
4122 }
4123
4124 void wxDataViewCtrl::OnColumnsCountChanged()
4125 {
4126     if (m_headerArea)
4127         m_headerArea->SetColumnCount(GetColumnCount());
4128
4129     m_clientArea->UpdateDisplay();
4130 }
4131
4132 void wxDataViewCtrl::DoSetExpanderColumn()
4133 {
4134     m_clientArea->UpdateDisplay();
4135 }
4136
4137 void wxDataViewCtrl::DoSetIndent()
4138 {
4139     m_clientArea->UpdateDisplay();
4140 }
4141
4142 unsigned int wxDataViewCtrl::GetColumnCount() const
4143 {
4144     return m_cols.GetCount();
4145 }
4146
4147 bool wxDataViewCtrl::SetRowHeight( int lineHeight )
4148 {
4149     if ( !m_clientArea )
4150         return false;
4151
4152     m_clientArea->SetRowHeight(lineHeight);
4153
4154     return true;
4155 }
4156
4157 wxDataViewColumn* wxDataViewCtrl::GetColumn( unsigned int idx ) const
4158 {
4159     return m_cols[idx];
4160 }
4161
4162 wxDataViewColumn *wxDataViewCtrl::GetColumnAt(unsigned int pos) const
4163 {
4164     // columns can't be reordered if there is no header window which allows
4165     // to do this
4166     const unsigned idx = m_headerArea ? m_headerArea->GetColumnsOrder()[pos]
4167                                     : pos;
4168
4169     return GetColumn(idx);
4170 }
4171
4172 int wxDataViewCtrl::GetColumnIndex(const wxDataViewColumn *column) const
4173 {
4174     const unsigned count = m_cols.size();
4175     for ( unsigned n = 0; n < count; n++ )
4176     {
4177         if ( m_cols[n] == column )
4178             return n;
4179     }
4180
4181     return wxNOT_FOUND;
4182 }
4183
4184 unsigned int wxDataViewCtrl::GetBestColumnWidth(int idx) const
4185 {
4186     if ( m_colsBestWidths[idx] != 0 )
4187         return m_colsBestWidths[idx];
4188
4189     const int count = m_clientArea->GetRowCount();
4190     wxDataViewColumn *column = GetColumn(idx);
4191     wxDataViewRenderer *renderer =
4192         const_cast<wxDataViewRenderer*>(column->GetRenderer());
4193
4194     class MaxWidthCalculator
4195     {
4196     public:
4197         MaxWidthCalculator(wxDataViewMainWindow *clientArea,
4198                            wxDataViewRenderer *renderer,
4199                            const wxDataViewModel *model,
4200                            unsigned column)
4201             : m_width(0),
4202               m_clientArea(clientArea),
4203               m_renderer(renderer),
4204               m_model(model),
4205               m_column(column)
4206         {
4207         }
4208
4209         void UpdateWithWidth(int width)
4210         {
4211             m_width = wxMax(m_width, width);
4212         }
4213
4214         void UpdateWithRow(int row)
4215         {
4216             wxDataViewItem item = m_clientArea->GetItemByRow(row);
4217             m_renderer->PrepareForItem(m_model, item, m_column);
4218             m_width = wxMax(m_width, m_renderer->GetSize().x);
4219         }
4220
4221         int GetMaxWidth() const { return m_width; }
4222
4223     private:
4224         int m_width;
4225         wxDataViewMainWindow *m_clientArea;
4226         wxDataViewRenderer *m_renderer;
4227         const wxDataViewModel *m_model;
4228         unsigned m_column;
4229     };
4230
4231     MaxWidthCalculator calculator(m_clientArea, renderer,
4232                                   GetModel(), column->GetModelColumn());
4233
4234     if ( m_headerArea )
4235     {
4236         int header_width = m_headerArea->GetTextExtent(column->GetTitle()).x;
4237         // Labels on native MSW header are indented on both sides
4238         header_width +=
4239             wxRendererNative::Get().GetHeaderButtonMargin(m_headerArea);
4240         calculator.UpdateWithWidth(header_width);
4241     }
4242
4243     // The code below deserves some explanation. For very large controls, we
4244     // simply can't afford to calculate sizes for all items, it takes too
4245     // long. So the best we can do is to check the first and the last N/2
4246     // items in the control for some sufficiently large N and calculate best
4247     // sizes from that. That can result in the calculated best width being too
4248     // small for some outliers, but it's better to get slightly imperfect
4249     // result than to wait several seconds after every update. To avoid highly
4250     // visible miscalculations, we also include all currently visible items
4251     // no matter what.  Finally, the value of N is determined dynamically by
4252     // measuring how much time we spent on the determining item widths so far.
4253
4254 #if wxUSE_STOPWATCH
4255     int top_part_end = count;
4256     static const long CALC_TIMEOUT = 20/*ms*/;
4257     // don't call wxStopWatch::Time() too often
4258     static const unsigned CALC_CHECK_FREQ = 100;
4259     wxStopWatch timer;
4260 #else
4261     // use some hard-coded limit, that's the best we can do without timer
4262     int top_part_end = wxMin(500, count);
4263 #endif // wxUSE_STOPWATCH/!wxUSE_STOPWATCH
4264
4265     int row = 0;
4266
4267     for ( row = 0; row < top_part_end; row++ )
4268     {
4269 #if wxUSE_STOPWATCH
4270         if ( row % CALC_CHECK_FREQ == CALC_CHECK_FREQ-1 &&
4271              timer.Time() > CALC_TIMEOUT )
4272             break;
4273 #endif // wxUSE_STOPWATCH
4274         calculator.UpdateWithRow(row);
4275     }
4276
4277     // row is the first unmeasured item now; that's our value of N/2
4278
4279     if ( row < count )
4280     {
4281         top_part_end = row;
4282
4283         // add bottom N/2 items now:
4284         const int bottom_part_start = wxMax(row, count - row);
4285         for ( row = bottom_part_start; row < count; row++ )
4286         {
4287             calculator.UpdateWithRow(row);
4288         }
4289
4290         // finally, include currently visible items in the calculation:
4291         const wxPoint origin = CalcUnscrolledPosition(wxPoint(0, 0));
4292         int first_visible = m_clientArea->GetLineAt(origin.y);
4293         int last_visible = m_clientArea->GetLineAt(origin.y + GetClientSize().y);
4294
4295         first_visible = wxMax(first_visible, top_part_end);
4296         last_visible = wxMin(bottom_part_start, last_visible);
4297
4298         for ( row = first_visible; row < last_visible; row++ )
4299         {
4300             calculator.UpdateWithRow(row);
4301         }
4302
4303         wxLogTrace("dataview",
4304                    "determined best size from %d top, %d bottom plus %d more visible items out of %d total",
4305                    top_part_end,
4306                    count - bottom_part_start,
4307                    wxMax(0, last_visible - first_visible),
4308                    count);
4309     }
4310
4311     int max_width = calculator.GetMaxWidth();
4312     if ( max_width > 0 )
4313         max_width += 2 * PADDING_RIGHTLEFT;
4314
4315     const_cast<wxDataViewCtrl*>(this)->m_colsBestWidths[idx] = max_width;
4316     return max_width;
4317 }
4318
4319 void wxDataViewCtrl::ColumnMoved(wxDataViewColumn * WXUNUSED(col),
4320                                 unsigned int WXUNUSED(new_pos))
4321 {
4322     // do _not_ reorder m_cols elements here, they should always be in the
4323     // order in which columns were added, we only display the columns in
4324     // different order
4325     m_clientArea->UpdateDisplay();
4326 }
4327
4328 bool wxDataViewCtrl::DeleteColumn( wxDataViewColumn *column )
4329 {
4330     wxDataViewColumnList::compatibility_iterator ret = m_cols.Find( column );
4331     if (!ret)
4332         return false;
4333
4334     m_colsBestWidths.erase(m_colsBestWidths.begin() + GetColumnIndex(column));
4335     m_cols.Erase(ret);
4336     OnColumnsCountChanged();
4337
4338     return true;
4339 }
4340
4341 bool wxDataViewCtrl::ClearColumns()
4342 {
4343     m_cols.Clear();
4344     m_colsBestWidths.clear();
4345     OnColumnsCountChanged();
4346     return true;
4347 }
4348
4349 void wxDataViewCtrl::InvalidateColBestWidth(int idx)
4350 {
4351     m_colsBestWidths[idx] = 0;
4352
4353     if ( m_headerArea )
4354         m_headerArea->UpdateColumn(idx);
4355 }
4356
4357 void wxDataViewCtrl::InvalidateColBestWidths()
4358 {
4359     m_colsBestWidths.clear();
4360     m_colsBestWidths.resize(m_cols.size());
4361
4362     if ( m_headerArea )
4363     {
4364         const unsigned cols = m_headerArea->GetColumnCount();
4365         for ( unsigned i = 0; i < cols; i++ )
4366             m_headerArea->UpdateColumn(i);
4367     }
4368 }
4369
4370 int wxDataViewCtrl::GetColumnPosition( const wxDataViewColumn *column ) const
4371 {
4372 #if 1
4373     unsigned int len = GetColumnCount();
4374     for ( unsigned int i = 0; i < len; i++ )
4375     {
4376         wxDataViewColumn * col = GetColumnAt(i);
4377         if (column==col)
4378             return i;
4379     }
4380
4381     return wxNOT_FOUND;
4382 #else
4383     // This returns the position in pixels which is not what we want.
4384     int ret = 0,
4385         dummy = 0;
4386     unsigned int len = GetColumnCount();
4387     for ( unsigned int i = 0; i < len; i++ )
4388     {
4389         wxDataViewColumn * col = GetColumnAt(i);
4390         if (col->IsHidden())
4391             continue;
4392         ret += col->GetWidth();
4393         if (column==col)
4394         {
4395             CalcScrolledPosition( ret, dummy, &ret, &dummy );
4396             break;
4397         }
4398     }
4399     return ret;
4400 #endif
4401 }
4402
4403 wxDataViewColumn *wxDataViewCtrl::GetSortingColumn() const
4404 {
4405     return m_sortingColumnIdx == wxNOT_FOUND ? NULL
4406                                             : GetColumn(m_sortingColumnIdx);
4407 }
4408
4409 wxDataViewItem wxDataViewCtrl::DoGetCurrentItem() const
4410 {
4411     return GetItemByRow(m_clientArea->GetCurrentRow());
4412 }
4413
4414 void wxDataViewCtrl::DoSetCurrentItem(const wxDataViewItem& item)
4415 {
4416     const int row = m_clientArea->GetRowByItem(item);
4417
4418     const unsigned oldCurrent = m_clientArea->GetCurrentRow();
4419     if ( static_cast<unsigned>(row) != oldCurrent )
4420     {
4421         m_clientArea->ChangeCurrentRow(row);
4422         m_clientArea->RefreshRow(oldCurrent);
4423         m_clientArea->RefreshRow(row);
4424     }
4425 }
4426
4427 // Selection code with wxDataViewItem as parameters
4428 wxDataViewItem wxDataViewCtrl::GetSelection() const
4429 {
4430     return m_clientArea->GetSelection();
4431 }
4432
4433 int wxDataViewCtrl::GetSelections( wxDataViewItemArray & sel ) const
4434 {
4435     sel.Empty();
4436     wxDataViewSelection selection = m_clientArea->GetSelections();
4437     int len = selection.GetCount();
4438     for( int i = 0; i < len; i ++)
4439     {
4440         unsigned int row = selection[i];
4441         sel.Add( m_clientArea->GetItemByRow( row ) );
4442     }
4443     return len;
4444 }
4445
4446 void wxDataViewCtrl::SetSelections( const wxDataViewItemArray & sel )
4447 {
4448     wxDataViewSelection selection(wxDataViewSelectionCmp);
4449
4450     wxDataViewItem last_parent;
4451
4452     int len = sel.GetCount();
4453     for( int i = 0; i < len; i ++ )
4454     {
4455         wxDataViewItem item = sel[i];
4456         wxDataViewItem parent = GetModel()->GetParent( item );
4457         if (parent)
4458         {
4459             if (parent != last_parent)
4460                 ExpandAncestors(item);
4461         }
4462
4463         last_parent = parent;
4464         int row = m_clientArea->GetRowByItem( item );
4465         if( row >= 0 )
4466             selection.Add( static_cast<unsigned int>(row) );
4467     }
4468
4469     m_clientArea->SetSelections( selection );
4470 }
4471
4472 void wxDataViewCtrl::Select( const wxDataViewItem & item )
4473 {
4474     ExpandAncestors( item );
4475
4476     int row = m_clientArea->GetRowByItem( item );
4477     if( row >= 0 )
4478     {
4479         // Unselect all rows before select another in the single select mode
4480         if (m_clientArea->IsSingleSel())
4481             m_clientArea->SelectAllRows(false);
4482
4483         m_clientArea->SelectRow(row, true);
4484
4485         // Also set focus to the selected item
4486         m_clientArea->ChangeCurrentRow( row );
4487     }
4488 }
4489
4490 void wxDataViewCtrl::Unselect( const wxDataViewItem & item )
4491 {
4492     int row = m_clientArea->GetRowByItem( item );
4493     if( row >= 0 )
4494         m_clientArea->SelectRow(row, false);
4495 }
4496
4497 bool wxDataViewCtrl::IsSelected( const wxDataViewItem & item ) const
4498 {
4499     int row = m_clientArea->GetRowByItem( item );
4500     if( row >= 0 )
4501     {
4502         return m_clientArea->IsRowSelected(row);
4503     }
4504     return false;
4505 }
4506
4507 // Selection code with row number as parameter
4508 int wxDataViewCtrl::GetSelections( wxArrayInt & sel ) const
4509 {
4510     sel.Empty();
4511     wxDataViewSelection selection = m_clientArea->GetSelections();
4512     int len = selection.GetCount();
4513     for( int i = 0; i < len; i ++)
4514     {
4515         unsigned int row = selection[i];
4516         sel.Add( row );
4517     }
4518     return len;
4519 }
4520
4521 void wxDataViewCtrl::SetSelections( const wxArrayInt & sel )
4522 {
4523     wxDataViewSelection selection(wxDataViewSelectionCmp);
4524     int len = sel.GetCount();
4525     for( int i = 0; i < len; i ++ )
4526     {
4527         int row = sel[i];
4528         if( row >= 0 )
4529             selection.Add( static_cast<unsigned int>(row) );
4530     }
4531     m_clientArea->SetSelections( selection );
4532 }
4533
4534 void wxDataViewCtrl::Select( int row )
4535 {
4536     if( row >= 0 )
4537     {
4538         if (m_clientArea->IsSingleSel())
4539             m_clientArea->SelectAllRows(false);
4540         m_clientArea->SelectRow( row, true );
4541     }
4542 }
4543
4544 void wxDataViewCtrl::Unselect( int row )
4545 {
4546     if( row >= 0 )
4547         m_clientArea->SelectRow(row, false);
4548 }
4549
4550 bool wxDataViewCtrl::IsSelected( int row ) const
4551 {
4552     if( row >= 0 )
4553         return m_clientArea->IsRowSelected(row);
4554     return false;
4555 }
4556
4557 void wxDataViewCtrl::SelectRange( int from, int to )
4558 {
4559     wxArrayInt sel;
4560     for( int i = from; i < to; i ++ )
4561         sel.Add( i );
4562     m_clientArea->Select(sel);
4563 }
4564
4565 void wxDataViewCtrl::UnselectRange( int from, int to )
4566 {
4567     wxDataViewSelection sel = m_clientArea->GetSelections();
4568     for( int i = from; i < to; i ++ )
4569         if( sel.Index( i ) != wxNOT_FOUND )
4570             sel.Remove( i );
4571     m_clientArea->SetSelections(sel);
4572 }
4573
4574 void wxDataViewCtrl::SelectAll()
4575 {
4576     m_clientArea->SelectAllRows(true);
4577 }
4578
4579 void wxDataViewCtrl::UnselectAll()
4580 {
4581     m_clientArea->SelectAllRows(false);
4582 }
4583
4584 void wxDataViewCtrl::EnsureVisible( int row, int column )
4585 {
4586     if( row < 0 )
4587         row = 0;
4588     if( row > (int) m_clientArea->GetRowCount() )
4589         row = m_clientArea->GetRowCount();
4590
4591     int first = m_clientArea->GetFirstVisibleRow();
4592     int last = m_clientArea->GetLastVisibleRow();
4593     if( row < first )
4594         m_clientArea->ScrollTo( row, column );
4595     else if( row > last )
4596         m_clientArea->ScrollTo( row - last + first, column );
4597     else
4598         m_clientArea->ScrollTo( first, column );
4599 }
4600
4601 void wxDataViewCtrl::EnsureVisible( const wxDataViewItem & item, const wxDataViewColumn * column )
4602 {
4603     ExpandAncestors( item );
4604
4605     m_clientArea->RecalculateDisplay();
4606
4607     int row = m_clientArea->GetRowByItem(item);
4608     if( row >= 0 )
4609     {
4610         if( column == NULL )
4611             EnsureVisible(row, -1);
4612         else
4613             EnsureVisible( row, GetColumnIndex(column) );
4614     }
4615
4616 }
4617
4618 void wxDataViewCtrl::HitTest( const wxPoint & point, wxDataViewItem & item,
4619                               wxDataViewColumn* &column ) const
4620 {
4621     m_clientArea->HitTest(point, item, column);
4622 }
4623
4624 wxRect wxDataViewCtrl::GetItemRect( const wxDataViewItem & item,
4625                                     const wxDataViewColumn* column ) const
4626 {
4627     return m_clientArea->GetItemRect(item, column);
4628 }
4629
4630 wxDataViewItem wxDataViewCtrl::GetItemByRow( unsigned int row ) const
4631 {
4632     return m_clientArea->GetItemByRow( row );
4633 }
4634
4635 int wxDataViewCtrl::GetRowByItem( const wxDataViewItem & item ) const
4636 {
4637     return m_clientArea->GetRowByItem( item );
4638 }
4639
4640 void wxDataViewCtrl::Expand( const wxDataViewItem & item )
4641 {
4642     ExpandAncestors( item );
4643
4644     int row = m_clientArea->GetRowByItem( item );
4645     if (row != -1)
4646         m_clientArea->Expand(row);
4647 }
4648
4649 void wxDataViewCtrl::Collapse( const wxDataViewItem & item )
4650 {
4651     int row = m_clientArea->GetRowByItem( item );
4652     if (row != -1)
4653         m_clientArea->Collapse(row);
4654 }
4655
4656 bool wxDataViewCtrl::IsExpanded( const wxDataViewItem & item ) const
4657 {
4658     int row = m_clientArea->GetRowByItem( item );
4659     if (row != -1)
4660         return m_clientArea->IsExpanded(row);
4661     return false;
4662 }
4663
4664 void wxDataViewCtrl::StartEditor( const wxDataViewItem & item, unsigned int column )
4665 {
4666     wxDataViewColumn* col = GetColumn( column );
4667     if (!col)
4668         return;
4669
4670     wxRect itemRect = GetItemRect(item, col);
4671     wxDataViewRenderer* renderer = col->GetRenderer();
4672     if (renderer->GetMode() == wxDATAVIEW_CELL_EDITABLE)
4673         renderer->StartEditing(item, itemRect);
4674 }
4675
4676 #endif // !wxUSE_GENERICDATAVIEWCTRL
4677
4678 #endif // wxUSE_DATAVIEWCTRL