src/generic/datavgen.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/datavgen.cpp
   3 // Purpose:     wxDataViewCtrl generic implementation
   4 // Author:      Robert Roebling
   5 // Modified by: Francesco Montorsi, Guru Kathiresan, Bo Yang
   6 // Id:          $Id$
   7 // Copyright:   (c) 1998 Robert Roebling
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // For compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 #if wxUSE_DATAVIEWCTRL
  19
  20 #include "wx/dataview.h"
  21
  22 #ifdef wxUSE_GENERICDATAVIEWCTRL
  23
  24 #ifndef WX_PRECOMP
  25     #ifdef __WXMSW__
  26         #include "wx/msw/private.h"
  27         #include "wx/msw/wrapwin.h"
  28         #include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
  29     #endif
  30     #include "wx/sizer.h"
  31     #include "wx/log.h"
  32     #include "wx/dcclient.h"
  33     #include "wx/timer.h"
  34     #include "wx/settings.h"
  35     #include "wx/msgdlg.h"
  36     #include "wx/dcscreen.h"
  37     #include "wx/frame.h"
  38 #endif
  39
  40 #include "wx/stockitem.h"
  41 #include "wx/calctrl.h"
  42 #include "wx/popupwin.h"
  43 #include "wx/renderer.h"
  44 #include "wx/dcbuffer.h"
  45 #include "wx/icon.h"
  46 #include "wx/list.h"
  47 #include "wx/listimpl.cpp"
  48 #include "wx/imaglist.h"
  49 #include "wx/headerctrl.h"
  50 #include "wx/dnd.h"
  51 #include "wx/stopwatch.h"
  52
  53 //-----------------------------------------------------------------------------
  54 // classes
  55 //-----------------------------------------------------------------------------
  56
  57 class wxDataViewColumn;
  58 class wxDataViewHeaderWindow;
  59 class wxDataViewCtrl;
  60
  61 //-----------------------------------------------------------------------------
  62 // classes
  63 //-----------------------------------------------------------------------------
  64
  65 static const int SCROLL_UNIT_X = 15;
  66
  67 // the cell padding on the left/right
  68 static const int PADDING_RIGHTLEFT = 3;
  69
  70 // the expander space margin
  71 static const int EXPANDER_MARGIN = 4;
  72
  73 #ifdef __WXMSW__
  74 static const int EXPANDER_OFFSET = 4;
  75 #else
  76 static const int EXPANDER_OFFSET = 1;
  77 #endif
  78
  79 // Below is the compare stuff.
  80 // For the generic implementation, both the leaf nodes and the nodes are sorted for
  81 // fast search when needed
  82 static wxDataViewModel* g_model;
  83 static int g_column = -2;
  84 static bool g_asending = true;
  85
  86 //-----------------------------------------------------------------------------
  87 // wxDataViewColumn
  88 //-----------------------------------------------------------------------------
  89
  90 void wxDataViewColumn::Init(int width, wxAlignment align, int flags)
  91 {
  92     m_width = width;
  93     m_minWidth = 0;
  94     m_align = align;
  95     m_flags = flags;
  96     m_sort = false;
  97     m_sortAscending = true;
  98 }
  99
 100 int wxDataViewColumn::GetWidth() const
 101 {
 102     switch ( m_width )
 103     {
 104         case wxCOL_WIDTH_DEFAULT:
 105             return wxDVC_DEFAULT_WIDTH;
 106
 107         case wxCOL_WIDTH_AUTOSIZE:
 108             wxCHECK_MSG( m_owner, wxDVC_DEFAULT_WIDTH, "no owner control" );
 109             return m_owner->GetBestColumnWidth(m_owner->GetColumnIndex(this));
 110
 111         default:
 112             return m_width;
 113     }
 114 }
 115
 116 void wxDataViewColumn::UpdateDisplay()
 117 {
 118     if (m_owner)
 119     {
 120         int idx = m_owner->GetColumnIndex( this );
 121         m_owner->OnColumnChange( idx );
 122     }
 123 }
 124
 125 //-----------------------------------------------------------------------------
 126 // wxDataViewHeaderWindow
 127 //-----------------------------------------------------------------------------
 128
 129 class wxDataViewHeaderWindow : public wxHeaderCtrl
 130 {
 131 public:
 132     wxDataViewHeaderWindow(wxDataViewCtrl *parent)
 133         : wxHeaderCtrl(parent)
 134     {
 135     }
 136
 137     wxDataViewCtrl *GetOwner() const
 138         { return static_cast<wxDataViewCtrl *>(GetParent()); }
 139
 140 protected:
 141     // implement/override wxHeaderCtrl functions by forwarding them to the main
 142     // control
 143     virtual const wxHeaderColumn& GetColumn(unsigned int idx) const
 144     {
 145         return *(GetOwner()->GetColumn(idx));
 146     }
 147
 148     virtual bool UpdateColumnWidthToFit(unsigned int idx, int widthTitle)
 149     {
 150         wxDataViewCtrl * const owner = GetOwner();
 151
 152         int widthContents = owner->GetBestColumnWidth(idx);
 153         owner->GetColumn(idx)->SetWidth(wxMax(widthTitle, widthContents));
 154         owner->OnColumnChange(idx);
 155
 156         return true;
 157     }
 158
 159 private:
 160     bool SendEvent(wxEventType type, unsigned int n)
 161     {
 162         wxDataViewCtrl * const owner = GetOwner();
 163         wxDataViewEvent event(type, owner->GetId());
 164
 165         event.SetEventObject(owner);
 166         event.SetColumn(n);
 167         event.SetDataViewColumn(owner->GetColumn(n));
 168         event.SetModel(owner->GetModel());
 169
 170         // for events created by wxDataViewHeaderWindow the
 171         // row / value fields are not valid
 172         return owner->GetEventHandler()->ProcessEvent(event);
 173     }
 174
 175     void OnClick(wxHeaderCtrlEvent& event)
 176     {
 177         const unsigned idx = event.GetColumn();
 178
 179         if ( SendEvent(wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_CLICK, idx) )
 180             return;
 181
 182         // default handling for the column click is to sort by this column or
 183         // toggle its sort order
 184         wxDataViewCtrl * const owner = GetOwner();
 185         wxDataViewColumn * const col = owner->GetColumn(idx);
 186         if ( !col->IsSortable() )
 187         {
 188             // no default handling for non-sortable columns
 189             event.Skip();
 190             return;
 191         }
 192
 193         if ( col->IsSortKey() )
 194         {
 195             // already using this column for sorting, just change the order
 196             col->ToggleSortOrder();
 197         }
 198         else // not using this column for sorting yet
 199         {
 200             // first unset the old sort column if any
 201             int oldSortKey = owner->GetSortingColumnIndex();
 202             if ( oldSortKey != wxNOT_FOUND )
 203             {
 204                 owner->GetColumn(oldSortKey)->UnsetAsSortKey();
 205                 owner->OnColumnChange(oldSortKey);
 206             }
 207
 208             owner->SetSortingColumnIndex(idx);
 209             col->SetAsSortKey();
 210         }
 211
 212         wxDataViewModel * const model = owner->GetModel();
 213         if ( model )
 214             model->Resort();
 215
 216         owner->OnColumnChange(idx);
 217     }
 218
 219     void OnRClick(wxHeaderCtrlEvent& event)
 220     {
 221         if ( !SendEvent(wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_RIGHT_CLICK,
 222                         event.GetColumn()) )
 223             event.Skip();
 224     }
 225
 226     void OnResize(wxHeaderCtrlEvent& event)
 227     {
 228         wxDataViewCtrl * const owner = GetOwner();
 229
 230         const unsigned col = event.GetColumn();
 231         owner->GetColumn(col)->SetWidth(event.GetWidth());
 232         GetOwner()->OnColumnChange(col);
 233     }
 234
 235     void OnEndReorder(wxHeaderCtrlEvent& event)
 236     {
 237         wxDataViewCtrl * const owner = GetOwner();
 238         owner->ColumnMoved(owner->GetColumn(event.GetColumn()),
 239                         event.GetNewOrder());
 240     }
 241
 242     DECLARE_EVENT_TABLE()
 243     wxDECLARE_NO_COPY_CLASS(wxDataViewHeaderWindow);
 244 };
 245
 246 BEGIN_EVENT_TABLE(wxDataViewHeaderWindow, wxHeaderCtrl)
 247     EVT_HEADER_CLICK(wxID_ANY, wxDataViewHeaderWindow::OnClick)
 248     EVT_HEADER_RIGHT_CLICK(wxID_ANY, wxDataViewHeaderWindow::OnRClick)
 249
 250     EVT_HEADER_RESIZING(wxID_ANY, wxDataViewHeaderWindow::OnResize)
 251     EVT_HEADER_END_RESIZE(wxID_ANY, wxDataViewHeaderWindow::OnResize)
 252
 253     EVT_HEADER_END_REORDER(wxID_ANY, wxDataViewHeaderWindow::OnEndReorder)
 254 END_EVENT_TABLE()
 255
 256 //-----------------------------------------------------------------------------
 257 // wxDataViewRenameTimer
 258 //-----------------------------------------------------------------------------
 259
 260 class wxDataViewRenameTimer: public wxTimer
 261 {
 262 private:
 263     wxDataViewMainWindow *m_owner;
 264
 265 public:
 266     wxDataViewRenameTimer( wxDataViewMainWindow *owner );
 267     void Notify();
 268 };
 269
 270 //-----------------------------------------------------------------------------
 271 // wxDataViewTreeNode
 272 //-----------------------------------------------------------------------------
 273
 274 class wxDataViewTreeNode;
 275 WX_DEFINE_ARRAY( wxDataViewTreeNode *, wxDataViewTreeNodes );
 276 WX_DEFINE_ARRAY( void* , wxDataViewTreeLeaves);
 277
 278 int LINKAGEMODE wxGenericTreeModelNodeCmp( wxDataViewTreeNode ** node1,
 279                                            wxDataViewTreeNode ** node2);
 280 int LINKAGEMODE wxGenericTreeModelItemCmp( void ** id1, void ** id2);
 281
 282 class wxDataViewTreeNode
 283 {
 284 public:
 285     wxDataViewTreeNode( wxDataViewTreeNode * parent = NULL )
 286     {
 287         m_parent = parent;
 288         if (!parent)
 289             m_open = true;
 290         else
 291             m_open = false;
 292         m_hasChildren = false;
 293         m_subTreeCount  = 0;
 294     }
 295
 296     ~wxDataViewTreeNode()
 297     {
 298     }
 299
 300     wxDataViewTreeNode * GetParent() const { return m_parent; }
 301     void SetParent( wxDataViewTreeNode * parent ) { m_parent = parent; }
 302     wxDataViewTreeNodes &  GetNodes() { return m_nodes; }
 303     wxDataViewTreeLeaves & GetChildren() { return m_leaves; }
 304
 305     void AddNode( wxDataViewTreeNode * node )
 306     {
 307         m_leaves.Add( node->GetItem().GetID() );
 308         if (g_column >= -1)
 309             m_leaves.Sort( &wxGenericTreeModelItemCmp );
 310         m_nodes.Add( node );
 311         if (g_column >= -1)
 312             m_nodes.Sort( &wxGenericTreeModelNodeCmp );
 313     }
 314     void AddLeaf( void * leaf )
 315     {
 316         m_leaves.Add( leaf );
 317         if (g_column >= -1)
 318             m_leaves.Sort( &wxGenericTreeModelItemCmp );
 319     }
 320
 321     wxDataViewItem & GetItem() { return m_item; }
 322     const wxDataViewItem & GetItem() const { return m_item; }
 323     void SetItem( const wxDataViewItem & item ) { m_item = item; }
 324
 325     unsigned int GetChildrenNumber() const { return m_leaves.GetCount(); }
 326     unsigned int GetNodeNumber() const { return m_nodes.GetCount(); }
 327     int GetIndentLevel() const
 328     {
 329         int ret = 0;
 330         const wxDataViewTreeNode * node = this;
 331         while( node->GetParent()->GetParent() != NULL )
 332         {
 333             node = node->GetParent();
 334             ret ++;
 335         }
 336         return ret;
 337     }
 338
 339     bool IsOpen() const
 340     {
 341         return m_open;
 342     }
 343
 344     void ToggleOpen()
 345     {
 346         int len = m_nodes.GetCount();
 347         int sum = 0;
 348         for ( int i = 0;i < len; i ++)
 349             sum += m_nodes[i]->GetSubTreeCount();
 350
 351         sum += m_leaves.GetCount();
 352         if (m_open)
 353         {
 354             ChangeSubTreeCount(-sum);
 355             m_open = !m_open;
 356         }
 357         else
 358         {
 359             m_open = !m_open;
 360             ChangeSubTreeCount(sum);
 361         }
 362     }
 363     bool HasChildren() const { return m_hasChildren; }
 364     void SetHasChildren( bool has ){ m_hasChildren = has; }
 365
 366     void SetSubTreeCount( int num ) { m_subTreeCount = num; }
 367     int GetSubTreeCount() const { return m_subTreeCount; }
 368     void ChangeSubTreeCount( int num )
 369     {
 370         if( !m_open )
 371             return;
 372         m_subTreeCount += num;
 373         if( m_parent )
 374             m_parent->ChangeSubTreeCount(num);
 375     }
 376
 377     void Resort()
 378     {
 379         if (g_column >= -1)
 380         {
 381             m_nodes.Sort( &wxGenericTreeModelNodeCmp );
 382             int len = m_nodes.GetCount();
 383             for (int i = 0; i < len; i ++)
 384                 m_nodes[i]->Resort();
 385             m_leaves.Sort( &wxGenericTreeModelItemCmp );
 386         }
 387     }
 388
 389 private:
 390     wxDataViewTreeNode  *m_parent;
 391     wxDataViewTreeNodes  m_nodes;
 392     wxDataViewTreeLeaves m_leaves;
 393     wxDataViewItem       m_item;
 394     bool                 m_open;
 395     bool                 m_hasChildren;
 396     int                  m_subTreeCount;
 397 };
 398
 399 int LINKAGEMODE wxGenericTreeModelNodeCmp( wxDataViewTreeNode ** node1,
 400                                            wxDataViewTreeNode ** node2)
 401 {
 402     return g_model->Compare( (*node1)->GetItem(), (*node2)->GetItem(), g_column, g_asending );
 403 }
 404
 405 int LINKAGEMODE wxGenericTreeModelItemCmp( void ** id1, void ** id2)
 406 {
 407     return g_model->Compare( *id1, *id2, g_column, g_asending );
 408 }
 409
 410
 411 //-----------------------------------------------------------------------------
 412 // wxDataViewMainWindow
 413 //-----------------------------------------------------------------------------
 414
 415 WX_DEFINE_SORTED_USER_EXPORTED_ARRAY_SIZE_T(unsigned int, wxDataViewSelection,
 416                                             WXDLLIMPEXP_ADV);
 417 WX_DECLARE_LIST(wxDataViewItem, ItemList);
 418 WX_DEFINE_LIST(ItemList)
 419
 420 class wxDataViewMainWindow: public wxWindow
 421 {
 422 public:
 423     wxDataViewMainWindow( wxDataViewCtrl *parent,
 424                             wxWindowID id,
 425                             const wxPoint &pos = wxDefaultPosition,
 426                             const wxSize &size = wxDefaultSize,
 427                             const wxString &name = wxT("wxdataviewctrlmainwindow") );
 428     virtual ~wxDataViewMainWindow();
 429
 430     bool IsList() const { return GetOwner()->GetModel()->IsListModel(); }
 431     bool IsVirtualList() const { return m_root == NULL; }
 432
 433     // notifications from wxDataViewModel
 434     bool ItemAdded( const wxDataViewItem &parent, const wxDataViewItem &item );
 435     bool ItemDeleted( const wxDataViewItem &parent, const wxDataViewItem &item );
 436     bool ItemChanged( const wxDataViewItem &item );
 437     bool ValueChanged( const wxDataViewItem &item, unsigned int model_column );
 438     bool Cleared();
 439     void Resort()
 440     {
 441         if (!IsVirtualList())
 442         {
 443             SortPrepare();
 444             m_root->Resort();
 445         }
 446         UpdateDisplay();
 447     }
 448
 449     void SortPrepare()
 450     {
 451         g_model = GetOwner()->GetModel();
 452         wxDataViewColumn* col = GetOwner()->GetSortingColumn();
 453         if( !col )
 454         {
 455             if (g_model->HasDefaultCompare())
 456                 g_column = -1;
 457             else
 458                 g_column = -2;
 459
 460             g_asending = true;
 461             return;
 462         }
 463         g_column = col->GetModelColumn();
 464         g_asending = col->IsSortOrderAscending();
 465     }
 466
 467     void SetOwner( wxDataViewCtrl* owner ) { m_owner = owner; }
 468     wxDataViewCtrl *GetOwner() { return m_owner; }
 469     const wxDataViewCtrl *GetOwner() const { return m_owner; }
 470
 471 #if wxUSE_DRAG_AND_DROP
 472     wxBitmap CreateItemBitmap( unsigned int row, int &indent );
 473 #endif // wxUSE_DRAG_AND_DROP
 474     void OnPaint( wxPaintEvent &event );
 475     void OnArrowChar(unsigned int newCurrent, const wxKeyEvent& event);
 476     void OnChar( wxKeyEvent &event );
 477     void OnMouse( wxMouseEvent &event );
 478     void OnSetFocus( wxFocusEvent &event );
 479     void OnKillFocus( wxFocusEvent &event );
 480
 481     void UpdateDisplay();
 482     void RecalculateDisplay();
 483     void OnInternalIdle();
 484
 485     void OnRenameTimer();
 486
 487     void ScrollWindow( int dx, int dy, const wxRect *rect = NULL );
 488     void ScrollTo( int rows, int column );
 489
 490     unsigned GetCurrentRow() const { return m_currentRow; }
 491     bool HasCurrentRow() { return m_currentRow != (unsigned int)-1; }
 492     void ChangeCurrentRow( unsigned int row );
 493
 494     bool IsSingleSel() const { return !GetParent()->HasFlag(wxDV_MULTIPLE); }
 495     bool IsEmpty() { return GetRowCount() == 0; }
 496
 497     int GetCountPerPage() const;
 498     int GetEndOfLastCol() const;
 499     unsigned int GetFirstVisibleRow() const;
 500
 501     // I change this method to un const because in the tree view,
 502     // the displaying number of the tree are changing along with the
 503     // expanding/collapsing of the tree nodes
 504     unsigned int GetLastVisibleRow();
 505     unsigned int GetRowCount();
 506
 507     wxDataViewItem GetSelection() const;
 508     wxDataViewSelection GetSelections(){ return m_selection; }
 509     void SetSelections( const wxDataViewSelection & sel )
 510         { m_selection = sel; UpdateDisplay(); }
 511     void Select( const wxArrayInt& aSelections );
 512     void SelectAllRows( bool on );
 513     void SelectRow( unsigned int row, bool on );
 514     void SelectRows( unsigned int from, unsigned int to, bool on );
 515     void ReverseRowSelection( unsigned int row );
 516     bool IsRowSelected( unsigned int row );
 517     void SendSelectionChangedEvent( const wxDataViewItem& item);
 518
 519     void RefreshRow( unsigned int row );
 520     void RefreshRows( unsigned int from, unsigned int to );
 521     void RefreshRowsAfter( unsigned int firstRow );
 522
 523     // returns the colour to be used for drawing the rules
 524     wxColour GetRuleColour() const
 525     {
 526         return wxSystemSettings::GetColour(wxSYS_COLOUR_3DLIGHT);
 527     }
 528
 529     wxRect GetLineRect( unsigned int row ) const;
 530
 531     int GetLineStart( unsigned int row ) const;  // row * m_lineHeight in fixed mode
 532     int GetLineHeight( unsigned int row ) const; // m_lineHeight in fixed mode
 533     int GetLineAt( unsigned int y ) const;       // y / m_lineHeight in fixed mode
 534
 535     // Some useful functions for row and item mapping
 536     wxDataViewItem GetItemByRow( unsigned int row ) const;
 537     int GetRowByItem( const wxDataViewItem & item ) const;
 538
 539     // Methods for building the mapping tree
 540     void BuildTree( wxDataViewModel  * model );
 541     void DestroyTree();
 542     void HitTest( const wxPoint & point, wxDataViewItem & item, wxDataViewColumn* &column );
 543     wxRect GetItemRect( const wxDataViewItem & item, const wxDataViewColumn* column );
 544
 545     void Expand( unsigned int row );
 546     void Collapse( unsigned int row );
 547     bool IsExpanded( unsigned int row ) const;
 548     bool HasChildren( unsigned int row ) const;
 549
 550 #if wxUSE_DRAG_AND_DROP
 551     bool EnableDragSource( const wxDataFormat &format );
 552     bool EnableDropTarget( const wxDataFormat &format );
 553
 554     void RemoveDropHint();
 555     wxDragResult OnDragOver( wxDataFormat format, wxCoord x, wxCoord y, wxDragResult def );
 556     bool OnDrop( wxDataFormat format, wxCoord x, wxCoord y );
 557     wxDragResult OnData( wxDataFormat format, wxCoord x, wxCoord y, wxDragResult def );
 558     void OnLeave();
 559 #endif // wxUSE_DRAG_AND_DROP
 560
 561 private:
 562     wxDataViewTreeNode * GetTreeNodeByRow( unsigned int row ) const;
 563     // We did not need this temporarily
 564     // wxDataViewTreeNode * GetTreeNodeByItem( const wxDataViewItem & item );
 565
 566     int RecalculateCount();
 567
 568     wxDataViewEvent SendExpanderEvent( wxEventType type, const wxDataViewItem & item );
 569
 570     wxDataViewTreeNode * FindNode( const wxDataViewItem & item );
 571
 572 private:
 573     wxDataViewCtrl             *m_owner;
 574     int                         m_lineHeight;
 575     bool                        m_dirty;
 576
 577     wxDataViewColumn           *m_currentCol;
 578     unsigned int                m_currentRow;
 579     wxDataViewSelection         m_selection;
 580
 581     wxDataViewRenameTimer      *m_renameTimer;
 582     bool                        m_lastOnSame;
 583
 584     bool                        m_hasFocus;
 585
 586 #if wxUSE_DRAG_AND_DROP
 587     int                         m_dragCount;
 588     wxPoint                     m_dragStart;
 589
 590     bool                        m_dragEnabled;
 591     wxDataFormat                m_dragFormat;
 592
 593     bool                        m_dropEnabled;
 594     wxDataFormat                m_dropFormat;
 595     bool                        m_dropHint;
 596     unsigned int                m_dropHintLine;
 597 #endif // wxUSE_DRAG_AND_DROP
 598
 599     // for double click logic
 600     unsigned int m_lineLastClicked,
 601         m_lineBeforeLastClicked,
 602         m_lineSelectSingleOnUp;
 603
 604     // the pen used to draw horiz/vertical rules
 605     wxPen m_penRule;
 606
 607     // the pen used to draw the expander and the lines
 608     wxPen m_penExpander;
 609
 610     // This is the tree structure of the model
 611     wxDataViewTreeNode * m_root;
 612     int m_count;
 613
 614     // This is the tree node under the cursor
 615     wxDataViewTreeNode * m_underMouse;
 616
 617 private:
 618     DECLARE_DYNAMIC_CLASS(wxDataViewMainWindow)
 619     DECLARE_EVENT_TABLE()
 620 };
 621
 622 // ---------------------------------------------------------
 623 // wxGenericDataViewModelNotifier
 624 // ---------------------------------------------------------
 625
 626 class wxGenericDataViewModelNotifier: public wxDataViewModelNotifier
 627 {
 628 public:
 629     wxGenericDataViewModelNotifier( wxDataViewMainWindow *mainWindow )
 630         { m_mainWindow = mainWindow; }
 631
 632     virtual bool ItemAdded( const wxDataViewItem & parent, const wxDataViewItem & item )
 633         { return m_mainWindow->ItemAdded( parent , item ); }
 634     virtual bool ItemDeleted( const wxDataViewItem &parent, const wxDataViewItem &item )
 635         { return m_mainWindow->ItemDeleted( parent, item ); }
 636     virtual bool ItemChanged( const wxDataViewItem & item )
 637         { return m_mainWindow->ItemChanged(item);  }
 638     virtual bool ValueChanged( const wxDataViewItem & item , unsigned int col )
 639         { return m_mainWindow->ValueChanged( item, col ); }
 640     virtual bool Cleared()
 641         { return m_mainWindow->Cleared(); }
 642     virtual void Resort()
 643         { m_mainWindow->Resort(); }
 644
 645     wxDataViewMainWindow    *m_mainWindow;
 646 };
 647
 648 // ---------------------------------------------------------
 649 // wxDataViewRenderer
 650 // ---------------------------------------------------------
 651
 652 IMPLEMENT_ABSTRACT_CLASS(wxDataViewRenderer, wxDataViewRendererBase)
 653
 654 wxDataViewRenderer::wxDataViewRenderer( const wxString &varianttype,
 655                                         wxDataViewCellMode mode,
 656                                         int align) :
 657     wxDataViewCustomRendererBase( varianttype, mode, align )
 658 {
 659     m_align = align;
 660     m_mode = mode;
 661     m_ellipsizeMode = wxELLIPSIZE_MIDDLE;
 662     m_dc = NULL;
 663 }
 664
 665 wxDataViewRenderer::~wxDataViewRenderer()
 666 {
 667     delete m_dc;
 668 }
 669
 670 wxDC *wxDataViewRenderer::GetDC()
 671 {
 672     if (m_dc == NULL)
 673     {
 674         if (GetOwner() == NULL)
 675             return NULL;
 676         if (GetOwner()->GetOwner() == NULL)
 677             return NULL;
 678         m_dc = new wxClientDC( GetOwner()->GetOwner() );
 679     }
 680
 681     return m_dc;
 682 }
 683
 684 void wxDataViewRenderer::SetAlignment( int align )
 685 {
 686     m_align=align;
 687 }
 688
 689 int wxDataViewRenderer::GetAlignment() const
 690 {
 691     return m_align;
 692 }
 693
 694 // ---------------------------------------------------------
 695 // wxDataViewCustomRenderer
 696 // ---------------------------------------------------------
 697
 698 IMPLEMENT_ABSTRACT_CLASS(wxDataViewCustomRenderer, wxDataViewRenderer)
 699
 700 wxDataViewCustomRenderer::wxDataViewCustomRenderer( const wxString &varianttype,
 701                         wxDataViewCellMode mode, int align ) :
 702     wxDataViewRenderer( varianttype, mode, align )
 703 {
 704 }
 705
 706 // ---------------------------------------------------------
 707 // wxDataViewTextRenderer
 708 // ---------------------------------------------------------
 709
 710 IMPLEMENT_CLASS(wxDataViewTextRenderer, wxDataViewRenderer)
 711
 712 wxDataViewTextRenderer::wxDataViewTextRenderer( const wxString &varianttype,
 713                                                 wxDataViewCellMode mode, int align ) :
 714     wxDataViewRenderer( varianttype, mode, align )
 715 {
 716 }
 717
 718 bool wxDataViewTextRenderer::SetValue( const wxVariant &value )
 719 {
 720     m_text = value.GetString();
 721
 722     return true;
 723 }
 724
 725 bool wxDataViewTextRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 726 {
 727     return false;
 728 }
 729
 730 bool wxDataViewTextRenderer::HasEditorCtrl() const
 731 {
 732     return true;
 733 }
 734
 735 wxControl* wxDataViewTextRenderer::CreateEditorCtrl( wxWindow *parent,
 736         wxRect labelRect, const wxVariant &value )
 737 {
 738     wxTextCtrl* ctrl = new wxTextCtrl( parent, wxID_ANY, value,
 739                                        wxPoint(labelRect.x,labelRect.y),
 740                                        wxSize(labelRect.width,labelRect.height) );
 741
 742     // select the text in the control an place the cursor at the end
 743     ctrl->SetInsertionPointEnd();
 744     ctrl->SelectAll();
 745
 746     return ctrl;
 747 }
 748
 749 bool wxDataViewTextRenderer::GetValueFromEditorCtrl( wxControl *editor, wxVariant &value )
 750 {
 751     wxTextCtrl *text = (wxTextCtrl*) editor;
 752     value = text->GetValue();
 753     return true;
 754 }
 755
 756 bool wxDataViewTextRenderer::Render(wxRect rect, wxDC *dc, int state)
 757 {
 758     RenderText(m_text, 0, rect, dc, state);
 759     return true;
 760 }
 761
 762 wxSize wxDataViewTextRenderer::GetSize() const
 763 {
 764     if (!m_text.empty())
 765         return GetTextExtent(m_text);
 766     else
 767         return wxSize(wxDVC_DEFAULT_RENDERER_SIZE,wxDVC_DEFAULT_RENDERER_SIZE);
 768 }
 769
 770 // ---------------------------------------------------------
 771 // wxDataViewBitmapRenderer
 772 // ---------------------------------------------------------
 773
 774 IMPLEMENT_CLASS(wxDataViewBitmapRenderer, wxDataViewRenderer)
 775
 776 wxDataViewBitmapRenderer::wxDataViewBitmapRenderer( const wxString &varianttype,
 777                                                     wxDataViewCellMode mode, int align ) :
 778     wxDataViewRenderer( varianttype, mode, align )
 779 {
 780 }
 781
 782 bool wxDataViewBitmapRenderer::SetValue( const wxVariant &value )
 783 {
 784     if (value.GetType() == wxT("wxBitmap"))
 785         m_bitmap << value;
 786     if (value.GetType() == wxT("wxIcon"))
 787         m_icon << value;
 788
 789     return true;
 790 }
 791
 792 bool wxDataViewBitmapRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 793 {
 794     return false;
 795 }
 796
 797 bool wxDataViewBitmapRenderer::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
 798 {
 799     if (m_bitmap.Ok())
 800         dc->DrawBitmap( m_bitmap, cell.x, cell.y );
 801     else if (m_icon.Ok())
 802         dc->DrawIcon( m_icon, cell.x, cell.y );
 803
 804     return true;
 805 }
 806
 807 wxSize wxDataViewBitmapRenderer::GetSize() const
 808 {
 809     if (m_bitmap.Ok())
 810         return wxSize( m_bitmap.GetWidth(), m_bitmap.GetHeight() );
 811     else if (m_icon.Ok())
 812         return wxSize( m_icon.GetWidth(), m_icon.GetHeight() );
 813
 814     return wxSize(wxDVC_DEFAULT_RENDERER_SIZE,wxDVC_DEFAULT_RENDERER_SIZE);
 815 }
 816
 817 // ---------------------------------------------------------
 818 // wxDataViewToggleRenderer
 819 // ---------------------------------------------------------
 820
 821 IMPLEMENT_ABSTRACT_CLASS(wxDataViewToggleRenderer, wxDataViewRenderer)
 822
 823 wxDataViewToggleRenderer::wxDataViewToggleRenderer( const wxString &varianttype,
 824                         wxDataViewCellMode mode, int align ) :
 825     wxDataViewRenderer( varianttype, mode, align )
 826 {
 827     m_toggle = false;
 828 }
 829
 830 bool wxDataViewToggleRenderer::SetValue( const wxVariant &value )
 831 {
 832     m_toggle = value.GetBool();
 833
 834     return true;
 835 }
 836
 837 bool wxDataViewToggleRenderer::GetValue( wxVariant &WXUNUSED(value) ) const
 838 {
 839     return false;
 840 }
 841
 842 bool wxDataViewToggleRenderer::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
 843 {
 844     int flags = 0;
 845     if (m_toggle)
 846         flags |= wxCONTROL_CHECKED;
 847     if (GetMode() != wxDATAVIEW_CELL_ACTIVATABLE ||
 848         GetEnabled() == false)
 849         flags |= wxCONTROL_DISABLED;
 850
 851     // check boxes we draw must always have the same, standard size (if it's
 852     // bigger than the cell size the checkbox will be truncated because the
 853     // caller had set the clipping rectangle to prevent us from drawing outside
 854     // the cell)
 855     cell.SetSize(GetSize());
 856
 857     wxRendererNative::Get().DrawCheckBox(
 858             GetOwner()->GetOwner(),
 859             *dc,
 860             cell,
 861             flags );
 862
 863     return true;
 864 }
 865
 866 bool wxDataViewToggleRenderer::WXOnLeftClick(const wxPoint& WXUNUSED(cursor),
 867                                              const wxRect& WXUNUSED(cell),
 868                                              wxDataViewModel *model,
 869                                              const wxDataViewItem& item,
 870                                              unsigned int col)
 871 {
 872     if (model->IsEnabled(item, col))
 873     {
 874         model->ChangeValue(!m_toggle, item, col);
 875         return true;
 876     }
 877
 878     return false;
 879 }
 880
 881 wxSize wxDataViewToggleRenderer::GetSize() const
 882 {
 883     // the window parameter is not used by GetCheckBoxSize() so it's
 884     // safe to pass NULL
 885     return wxRendererNative::Get().GetCheckBoxSize(NULL);
 886 }
 887
 888 // ---------------------------------------------------------
 889 // wxDataViewProgressRenderer
 890 // ---------------------------------------------------------
 891
 892 IMPLEMENT_ABSTRACT_CLASS(wxDataViewProgressRenderer, wxDataViewRenderer)
 893
 894 wxDataViewProgressRenderer::wxDataViewProgressRenderer( const wxString &label,
 895     const wxString &varianttype, wxDataViewCellMode mode, int align ) :
 896     wxDataViewRenderer( varianttype, mode, align )
 897 {
 898     m_label = label;
 899     m_value = 0;
 900 }
 901
 902 bool wxDataViewProgressRenderer::SetValue( const wxVariant &value )
 903 {
 904     m_value = (long) value;
 905
 906     if (m_value < 0) m_value = 0;
 907     if (m_value > 100) m_value = 100;
 908
 909     return true;
 910 }
 911
 912 bool wxDataViewProgressRenderer::GetValue( wxVariant &value ) const
 913 {
 914     value = (long) m_value;
 915     return true;
 916 }
 917
 918 bool
 919 wxDataViewProgressRenderer::Render(wxRect rect, wxDC *dc, int WXUNUSED(state))
 920 {
 921     // deflate the rect to leave a small border between bars in adjacent rows
 922     wxRect bar = rect.Deflate(0, 1);
 923
 924     dc->SetBrush( *wxTRANSPARENT_BRUSH );
 925     dc->SetPen( *wxBLACK_PEN );
 926     dc->DrawRectangle( bar );
 927
 928     bar.width = (int)(bar.width * m_value / 100.);
 929     dc->SetPen( *wxTRANSPARENT_PEN );
 930
 931     const wxDataViewItemAttr& attr = GetAttr();
 932     dc->SetBrush( attr.HasColour() ? wxBrush(attr.GetColour())
 933                                   : *wxBLUE_BRUSH );
 934     dc->DrawRectangle( bar );
 935
 936     return true;
 937 }
 938
 939 wxSize wxDataViewProgressRenderer::GetSize() const
 940 {
 941     return wxSize(40,12);
 942 }
 943
 944 // ---------------------------------------------------------
 945 // wxDataViewDateRenderer
 946 // ---------------------------------------------------------
 947
 948 #define wxUSE_DATE_RENDERER_POPUP (wxUSE_CALENDARCTRL && wxUSE_POPUPWIN)
 949
 950 #if wxUSE_DATE_RENDERER_POPUP
 951
 952 class wxDataViewDateRendererPopupTransient: public wxPopupTransientWindow
 953 {
 954 public:
 955     wxDataViewDateRendererPopupTransient( wxWindow* parent, wxDateTime *value,
 956         wxDataViewModel *model, const wxDataViewItem & item, unsigned int col) :
 957         wxPopupTransientWindow( parent, wxBORDER_SIMPLE ),
 958         m_item( item )
 959     {
 960         m_model = model;
 961         m_col = col;
 962         m_cal = new wxCalendarCtrl( this, wxID_ANY, *value );
 963         wxBoxSizer *sizer = new wxBoxSizer( wxHORIZONTAL );
 964         sizer->Add( m_cal, 1, wxGROW );
 965         SetSizer( sizer );
 966         sizer->Fit( this );
 967     }
 968
 969     void OnCalendar( wxCalendarEvent &event );
 970
 971     wxCalendarCtrl      *m_cal;
 972     wxDataViewModel *m_model;
 973     unsigned int               m_col;
 974     const wxDataViewItem &   m_item;
 975
 976 protected:
 977     virtual void OnDismiss()
 978     {
 979     }
 980
 981 private:
 982     DECLARE_EVENT_TABLE()
 983 };
 984
 985 BEGIN_EVENT_TABLE(wxDataViewDateRendererPopupTransient,wxPopupTransientWindow)
 986     EVT_CALENDAR( wxID_ANY, wxDataViewDateRendererPopupTransient::OnCalendar )
 987 END_EVENT_TABLE()
 988
 989 void wxDataViewDateRendererPopupTransient::OnCalendar( wxCalendarEvent &event )
 990 {
 991     m_model->ChangeValue( event.GetDate(), m_item, m_col );
 992     DismissAndNotify();
 993 }
 994
 995 #endif // wxUSE_DATE_RENDERER_POPUP
 996
 997 IMPLEMENT_ABSTRACT_CLASS(wxDataViewDateRenderer, wxDataViewRenderer)
 998
 999 wxDataViewDateRenderer::wxDataViewDateRenderer( const wxString &varianttype,
1000                         wxDataViewCellMode mode, int align ) :
1001     wxDataViewRenderer( varianttype, mode, align )
1002 {
1003 }
1004
1005 bool wxDataViewDateRenderer::SetValue( const wxVariant &value )
1006 {
1007     m_date = value.GetDateTime();
1008
1009     return true;
1010 }
1011
1012 bool wxDataViewDateRenderer::GetValue( wxVariant &value ) const
1013 {
1014     value = m_date;
1015     return true;
1016 }
1017
1018 bool wxDataViewDateRenderer::Render( wxRect cell, wxDC *dc, int state )
1019 {
1020     wxString tmp = m_date.FormatDate();
1021     RenderText( tmp, 0, cell, dc, state );
1022     return true;
1023 }
1024
1025 wxSize wxDataViewDateRenderer::GetSize() const
1026 {
1027     return GetTextExtent(m_date.FormatDate());
1028 }
1029
1030 bool wxDataViewDateRenderer::WXOnActivate(const wxRect& WXUNUSED(cell),
1031                                           wxDataViewModel *model,
1032                                           const wxDataViewItem& item,
1033                                           unsigned int col)
1034 {
1035     wxDateTime dtOld = m_date;
1036
1037 #if wxUSE_DATE_RENDERER_POPUP
1038     wxDataViewDateRendererPopupTransient *popup = new wxDataViewDateRendererPopupTransient(
1039         GetOwner()->GetOwner()->GetParent(), &dtOld, model, item, col);
1040     wxPoint pos = wxGetMousePosition();
1041     popup->Move( pos );
1042     popup->Layout();
1043     popup->Popup( popup->m_cal );
1044 #else // !wxUSE_DATE_RENDERER_POPUP
1045     wxMessageBox(dtOld.Format());
1046 #endif // wxUSE_DATE_RENDERER_POPUP/!wxUSE_DATE_RENDERER_POPUP
1047
1048     return true;
1049 }
1050
1051 // ---------------------------------------------------------
1052 // wxDataViewIconTextRenderer
1053 // ---------------------------------------------------------
1054
1055 IMPLEMENT_CLASS(wxDataViewIconTextRenderer, wxDataViewRenderer)
1056
1057 wxDataViewIconTextRenderer::wxDataViewIconTextRenderer(
1058 const wxString &varianttype, wxDataViewCellMode mode, int align ) :
1059     wxDataViewRenderer( varianttype, mode, align )
1060 {
1061     SetMode(mode);
1062     SetAlignment(align);
1063 }
1064
1065 bool wxDataViewIconTextRenderer::SetValue( const wxVariant &value )
1066 {
1067     m_value << value;
1068     return true;
1069 }
1070
1071 bool wxDataViewIconTextRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
1072 {
1073     return false;
1074 }
1075
1076 bool wxDataViewIconTextRenderer::Render(wxRect rect, wxDC *dc, int state)
1077 {
1078     int xoffset = 0;
1079
1080     const wxIcon& icon = m_value.GetIcon();
1081     if ( icon.IsOk() )
1082     {
1083         dc->DrawIcon(icon, rect.x, rect.y + (rect.height - icon.GetHeight())/2);
1084         xoffset = icon.GetWidth()+4;
1085     }
1086
1087     RenderText(m_value.GetText(), xoffset, rect, dc, state);
1088
1089     return true;
1090 }
1091
1092 wxSize wxDataViewIconTextRenderer::GetSize() const
1093 {
1094     if (!m_value.GetText().empty())
1095     {
1096         wxSize size = GetTextExtent(m_value.GetText());
1097
1098         if (m_value.GetIcon().IsOk())
1099             size.x += m_value.GetIcon().GetWidth() + 4;
1100         return size;
1101     }
1102     return wxSize(80,20);
1103 }
1104
1105 wxControl* wxDataViewIconTextRenderer::CreateEditorCtrl(wxWindow *parent, wxRect labelRect, const wxVariant& value)
1106 {
1107     wxDataViewIconText iconText;
1108     iconText << value;
1109
1110     wxString text = iconText.GetText();
1111
1112     // adjust the label rect to take the width of the icon into account
1113     if (iconText.GetIcon().IsOk())
1114     {
1115         int w = iconText.GetIcon().GetWidth() + 4;
1116         labelRect.x += w;
1117         labelRect.width -= w;
1118     }
1119
1120     wxTextCtrl* ctrl = new wxTextCtrl( parent, wxID_ANY, text,
1121                                        wxPoint(labelRect.x,labelRect.y),
1122                                        wxSize(labelRect.width,labelRect.height) );
1123
1124     // select the text in the control an place the cursor at the end
1125     ctrl->SetInsertionPointEnd();
1126     ctrl->SelectAll();
1127
1128     return ctrl;
1129 }
1130
1131 bool wxDataViewIconTextRenderer::GetValueFromEditorCtrl( wxControl *editor, wxVariant& value )
1132 {
1133     wxTextCtrl *text = (wxTextCtrl*) editor;
1134
1135     wxDataViewIconText iconText(text->GetValue(), m_value.GetIcon());
1136     value << iconText;
1137     return true;
1138 }
1139
1140 //-----------------------------------------------------------------------------
1141 // wxDataViewDropTarget
1142 //-----------------------------------------------------------------------------
1143
1144 #if wxUSE_DRAG_AND_DROP
1145
1146 class wxBitmapCanvas: public wxWindow
1147 {
1148 public:
1149     wxBitmapCanvas( wxWindow *parent, const wxBitmap &bitmap, const wxSize &size ) :
1150     wxWindow( parent, wxID_ANY, wxPoint(0,0), size )
1151     {
1152         m_bitmap = bitmap;
1153         Connect( wxEVT_PAINT, wxPaintEventHandler(wxBitmapCanvas::OnPaint) );
1154     }
1155
1156     void OnPaint( wxPaintEvent &WXUNUSED(event) )
1157     {
1158         wxPaintDC dc(this);
1159         dc.DrawBitmap( m_bitmap, 0, 0);
1160     }
1161
1162     wxBitmap m_bitmap;
1163 };
1164
1165 class wxDataViewDropSource: public wxDropSource
1166 {
1167 public:
1168     wxDataViewDropSource( wxDataViewMainWindow *win, unsigned int row ) :
1169         wxDropSource( win )
1170     {
1171         m_win = win;
1172         m_row = row;
1173         m_hint = NULL;
1174     }
1175
1176     ~wxDataViewDropSource()
1177     {
1178         delete m_hint;
1179     }
1180
1181     virtual bool GiveFeedback( wxDragResult WXUNUSED(effect) )
1182     {
1183         wxPoint pos = wxGetMousePosition();
1184
1185         if (!m_hint)
1186         {
1187             int liney = m_win->GetLineStart( m_row );
1188             int linex = 0;
1189             m_win->GetOwner()->CalcUnscrolledPosition( 0, liney, NULL, &liney );
1190             m_win->ClientToScreen( &linex, &liney );
1191             m_dist_x = pos.x - linex;
1192             m_dist_y = pos.y - liney;
1193
1194             int indent = 0;
1195             wxBitmap ib = m_win->CreateItemBitmap( m_row, indent );
1196             m_dist_x -= indent;
1197             m_hint = new wxFrame( m_win->GetParent(), wxID_ANY, wxEmptyString,
1198                                         wxPoint(pos.x - m_dist_x, pos.y + 5 ),
1199                                         ib.GetSize(),
1200                                         wxFRAME_TOOL_WINDOW |
1201                                         wxFRAME_FLOAT_ON_PARENT |
1202                                         wxFRAME_NO_TASKBAR |
1203                                         wxNO_BORDER );
1204             new wxBitmapCanvas( m_hint, ib, ib.GetSize() );
1205             m_hint->Show();
1206         }
1207         else
1208         {
1209             m_hint->Move( pos.x - m_dist_x, pos.y + 5  );
1210             m_hint->SetTransparent( 128 );
1211         }
1212
1213         return false;
1214     }
1215
1216     wxDataViewMainWindow   *m_win;
1217     unsigned int            m_row;
1218     wxFrame                *m_hint;
1219     int m_dist_x,m_dist_y;
1220 };
1221
1222
1223 class wxDataViewDropTarget: public wxDropTarget
1224 {
1225 public:
1226     wxDataViewDropTarget( wxDataObject *obj, wxDataViewMainWindow *win ) :
1227         wxDropTarget( obj )
1228     {
1229         m_win = win;
1230     }
1231
1232     virtual wxDragResult OnDragOver( wxCoord x, wxCoord y, wxDragResult def )
1233     {
1234         wxDataFormat format = GetMatchingPair();
1235         if (format == wxDF_INVALID)
1236             return wxDragNone;
1237         return m_win->OnDragOver( format, x, y, def);
1238     }
1239
1240     virtual bool OnDrop( wxCoord x, wxCoord y )
1241     {
1242         wxDataFormat format = GetMatchingPair();
1243         if (format == wxDF_INVALID)
1244             return false;
1245         return m_win->OnDrop( format, x, y );
1246     }
1247
1248     virtual wxDragResult OnData( wxCoord x, wxCoord y, wxDragResult def )
1249     {
1250         wxDataFormat format = GetMatchingPair();
1251         if (format == wxDF_INVALID)
1252             return wxDragNone;
1253         if (!GetData())
1254             return wxDragNone;
1255         return m_win->OnData( format, x, y, def );
1256     }
1257
1258     virtual void OnLeave()
1259         { m_win->OnLeave(); }
1260
1261     wxDataViewMainWindow   *m_win;
1262 };
1263
1264 #endif // wxUSE_DRAG_AND_DROP
1265
1266 //-----------------------------------------------------------------------------
1267 // wxDataViewRenameTimer
1268 //-----------------------------------------------------------------------------
1269
1270 wxDataViewRenameTimer::wxDataViewRenameTimer( wxDataViewMainWindow *owner )
1271 {
1272     m_owner = owner;
1273 }
1274
1275 void wxDataViewRenameTimer::Notify()
1276 {
1277     m_owner->OnRenameTimer();
1278 }
1279
1280 //-----------------------------------------------------------------------------
1281 // wxDataViewMainWindow
1282 //-----------------------------------------------------------------------------
1283
1284 // The tree building helper, declared firstly
1285 static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
1286                              wxDataViewTreeNode * node);
1287
1288 int LINKAGEMODE wxDataViewSelectionCmp( unsigned int row1, unsigned int row2 )
1289 {
1290     if (row1 > row2) return 1;
1291     if (row1 == row2) return 0;
1292     return -1;
1293 }
1294
1295 IMPLEMENT_ABSTRACT_CLASS(wxDataViewMainWindow, wxWindow)
1296
1297 BEGIN_EVENT_TABLE(wxDataViewMainWindow,wxWindow)
1298     EVT_PAINT         (wxDataViewMainWindow::OnPaint)
1299     EVT_MOUSE_EVENTS  (wxDataViewMainWindow::OnMouse)
1300     EVT_SET_FOCUS     (wxDataViewMainWindow::OnSetFocus)
1301     EVT_KILL_FOCUS    (wxDataViewMainWindow::OnKillFocus)
1302     EVT_CHAR          (wxDataViewMainWindow::OnChar)
1303 END_EVENT_TABLE()
1304
1305 wxDataViewMainWindow::wxDataViewMainWindow( wxDataViewCtrl *parent, wxWindowID id,
1306     const wxPoint &pos, const wxSize &size, const wxString &name ) :
1307     wxWindow( parent, id, pos, size, wxWANTS_CHARS|wxBORDER_NONE, name ),
1308     m_selection( wxDataViewSelectionCmp )
1309
1310 {
1311     SetOwner( parent );
1312
1313     m_lastOnSame = false;
1314     m_renameTimer = new wxDataViewRenameTimer( this );
1315
1316     // TODO: user better initial values/nothing selected
1317     m_currentCol = NULL;
1318     m_currentRow = 0;
1319
1320     m_lineHeight = wxMax( 17, GetCharHeight() + 2 ); // 17 = mini icon height + 1
1321
1322 #if wxUSE_DRAG_AND_DROP
1323     m_dragCount = 0;
1324     m_dragStart = wxPoint(0,0);
1325
1326     m_dragEnabled = false;
1327     m_dropEnabled = false;
1328     m_dropHint = false;
1329     m_dropHintLine = (unsigned int) -1;
1330 #endif // wxUSE_DRAG_AND_DROP
1331
1332     m_lineLastClicked = (unsigned int) -1;
1333     m_lineBeforeLastClicked = (unsigned int) -1;
1334     m_lineSelectSingleOnUp = (unsigned int) -1;
1335
1336     m_hasFocus = false;
1337
1338     SetBackgroundColour( *wxWHITE );
1339
1340     SetBackgroundStyle(wxBG_STYLE_CUSTOM);
1341
1342     m_penRule = wxPen(GetRuleColour());
1343
1344     // compose a pen whichcan draw black lines
1345     // TODO: maybe there is something system colour to use
1346     m_penExpander = wxPen(wxColour(0,0,0));
1347
1348     m_root = new wxDataViewTreeNode( NULL );
1349     m_root->SetHasChildren(true);
1350
1351     // Make m_count = -1 will cause the class recaculate the real displaying number of rows.
1352     m_count = -1;
1353     m_underMouse = NULL;
1354     UpdateDisplay();
1355 }
1356
1357 wxDataViewMainWindow::~wxDataViewMainWindow()
1358 {
1359     DestroyTree();
1360     delete m_renameTimer;
1361 }
1362
1363
1364 #if wxUSE_DRAG_AND_DROP
1365 bool wxDataViewMainWindow::EnableDragSource( const wxDataFormat &format )
1366 {
1367     m_dragFormat = format;
1368     m_dragEnabled = format != wxDF_INVALID;
1369
1370     return true;
1371 }
1372
1373 bool wxDataViewMainWindow::EnableDropTarget( const wxDataFormat &format )
1374 {
1375     m_dropFormat = format;
1376     m_dropEnabled = format != wxDF_INVALID;
1377
1378     if (m_dropEnabled)
1379         SetDropTarget( new wxDataViewDropTarget( new wxCustomDataObject( format ), this ) );
1380
1381     return true;
1382 }
1383
1384 void wxDataViewMainWindow::RemoveDropHint()
1385 {
1386     if (m_dropHint)
1387     {
1388             m_dropHint = false;
1389             RefreshRow( m_dropHintLine );
1390             m_dropHintLine = (unsigned int) -1;
1391     }
1392 }
1393
1394 wxDragResult wxDataViewMainWindow::OnDragOver( wxDataFormat format, wxCoord x,
1395                                                wxCoord y, wxDragResult def )
1396 {
1397     int xx = x;
1398     int yy = y;
1399     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1400     unsigned int row = GetLineAt( yy );
1401
1402     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1403     {
1404         RemoveDropHint();
1405         return wxDragNone;
1406     }
1407
1408     wxDataViewItem item = GetItemByRow( row );
1409
1410     wxDataViewModel *model = GetOwner()->GetModel();
1411
1412     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, m_owner->GetId() );
1413     event.SetEventObject( m_owner );
1414     event.SetItem( item );
1415     event.SetModel( model );
1416     event.SetDataFormat( format );
1417     if (!m_owner->HandleWindowEvent( event ))
1418     {
1419         RemoveDropHint();
1420         return wxDragNone;
1421     }
1422
1423     if (!event.IsAllowed())
1424     {
1425         RemoveDropHint();
1426         return wxDragNone;
1427     }
1428
1429
1430     if (m_dropHint && (row != m_dropHintLine))
1431         RefreshRow( m_dropHintLine );
1432     m_dropHint = true;
1433     m_dropHintLine = row;
1434     RefreshRow( row );
1435
1436     return def;
1437 }
1438
1439 bool wxDataViewMainWindow::OnDrop( wxDataFormat format, wxCoord x, wxCoord y )
1440 {
1441     RemoveDropHint();
1442
1443     int xx = x;
1444     int yy = y;
1445     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1446     unsigned int row = GetLineAt( yy );
1447
1448     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1449         return false;
1450
1451     wxDataViewItem item = GetItemByRow( row );
1452
1453     wxDataViewModel *model = GetOwner()->GetModel();
1454
1455     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, m_owner->GetId() );
1456     event.SetEventObject( m_owner );
1457     event.SetItem( item );
1458     event.SetModel( model );
1459     event.SetDataFormat( format );
1460     if (!m_owner->HandleWindowEvent( event ))
1461         return false;
1462
1463     if (!event.IsAllowed())
1464         return false;
1465
1466     return true;
1467 }
1468
1469 wxDragResult wxDataViewMainWindow::OnData( wxDataFormat format, wxCoord x, wxCoord y,
1470                                            wxDragResult def )
1471 {
1472     int xx = x;
1473     int yy = y;
1474     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1475     unsigned int row = GetLineAt( yy );
1476
1477     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1478         return wxDragNone;
1479
1480     wxDataViewItem item = GetItemByRow( row );
1481
1482     wxDataViewModel *model = GetOwner()->GetModel();
1483
1484     wxCustomDataObject *obj = (wxCustomDataObject *) GetDropTarget()->GetDataObject();
1485
1486     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP, m_owner->GetId() );
1487     event.SetEventObject( m_owner );
1488     event.SetItem( item );
1489     event.SetModel( model );
1490     event.SetDataFormat( format );
1491     event.SetDataSize( obj->GetSize() );
1492     event.SetDataBuffer( obj->GetData() );
1493     if (!m_owner->HandleWindowEvent( event ))
1494         return wxDragNone;
1495
1496     if (!event.IsAllowed())
1497         return wxDragNone;
1498
1499     return def;
1500 }
1501
1502 void wxDataViewMainWindow::OnLeave()
1503 {
1504     RemoveDropHint();
1505 }
1506
1507 wxBitmap wxDataViewMainWindow::CreateItemBitmap( unsigned int row, int &indent )
1508 {
1509     int height = GetLineHeight( row );
1510     int width = 0;
1511     unsigned int cols = GetOwner()->GetColumnCount();
1512     unsigned int col;
1513     for (col = 0; col < cols; col++)
1514     {
1515         wxDataViewColumn *column = GetOwner()->GetColumnAt(col);
1516         if (column->IsHidden())
1517             continue;      // skip it!
1518         width += column->GetWidth();
1519     }
1520
1521     indent = 0;
1522     if (!IsList())
1523     {
1524         wxDataViewTreeNode *node = GetTreeNodeByRow(row);
1525         indent = GetOwner()->GetIndent() * node->GetIndentLevel();
1526         indent = indent + m_lineHeight;
1527             // try to use the m_lineHeight as the expander space
1528
1529         if(!node->HasChildren())
1530             delete node;
1531     }
1532     width -= indent;
1533
1534     wxBitmap bitmap( width, height );
1535     wxMemoryDC dc( bitmap );
1536     dc.SetFont( GetFont() );
1537     dc.SetPen( *wxBLACK_PEN );
1538     dc.SetBrush( *wxWHITE_BRUSH );
1539     dc.DrawRectangle( 0,0,width,height );
1540
1541     wxDataViewModel *model = m_owner->GetModel();
1542
1543     wxDataViewColumn *expander = GetOwner()->GetExpanderColumn();
1544     if (!expander)
1545     {
1546         // TODO-RTL: last column for RTL support
1547         expander = GetOwner()->GetColumnAt( 0 );
1548         GetOwner()->SetExpanderColumn(expander);
1549     }
1550
1551
1552     int x = 0;
1553     for (col = 0; col < cols; col++)
1554     {
1555         wxDataViewColumn *column = GetOwner()->GetColumnAt( col );
1556         wxDataViewRenderer *cell = column->GetRenderer();
1557
1558         if (column->IsHidden())
1559             continue;       // skip it!
1560
1561         width = column->GetWidth();
1562
1563         if (column == expander)
1564             width -= indent;
1565
1566         wxDataViewItem item = GetItemByRow( row );
1567         cell->PrepareForItem(model, item, column->GetModelColumn());
1568
1569         wxRect item_rect(x, 0, width, height);
1570         item_rect.Deflate(PADDING_RIGHTLEFT, 0);
1571
1572         // dc.SetClippingRegion( item_rect );
1573         cell->WXCallRender(item_rect, &dc, 0);
1574         // dc.DestroyClippingRegion();
1575
1576         x += width;
1577     }
1578
1579     return bitmap;
1580 }
1581
1582 #endif // wxUSE_DRAG_AND_DROP
1583
1584
1585 void wxDataViewMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
1586 {
1587     wxDataViewModel *model = GetOwner()->GetModel();
1588     wxAutoBufferedPaintDC dc( this );
1589
1590 #ifdef __WXMSW__
1591     dc.SetBrush(GetOwner()->GetBackgroundColour());
1592     dc.SetPen( *wxTRANSPARENT_PEN );
1593     dc.DrawRectangle(GetClientSize());
1594 #endif
1595
1596     // prepare the DC
1597     GetOwner()->PrepareDC( dc );
1598     dc.SetFont( GetFont() );
1599
1600     wxRect update = GetUpdateRegion().GetBox();
1601     m_owner->CalcUnscrolledPosition( update.x, update.y, &update.x, &update.y );
1602
1603     // compute which items needs to be redrawn
1604     unsigned int item_start = GetLineAt( wxMax(0,update.y) );
1605     unsigned int item_count =
1606         wxMin( (int)(  GetLineAt( wxMax(0,update.y+update.height) ) - item_start + 1),
1607             (int)(GetRowCount( ) - item_start));
1608     unsigned int item_last = item_start + item_count;
1609
1610     // Send the event to wxDataViewCtrl itself.
1611     wxWindow * const parent = GetParent();
1612     wxDataViewEvent cache_event(wxEVT_COMMAND_DATAVIEW_CACHE_HINT, parent->GetId());
1613     cache_event.SetEventObject(parent);
1614     cache_event.SetCache(item_start, item_last - 1);
1615     parent->ProcessWindowEvent(cache_event);
1616
1617     // compute which columns needs to be redrawn
1618     unsigned int cols = GetOwner()->GetColumnCount();
1619     if ( !cols )
1620     {
1621         // we assume that we have at least one column below and painting an
1622         // empty control is unnecessary anyhow
1623         return;
1624     }
1625
1626     unsigned int col_start = 0;
1627     unsigned int x_start;
1628     for (x_start = 0; col_start < cols; col_start++)
1629     {
1630         wxDataViewColumn *col = GetOwner()->GetColumnAt(col_start);
1631         if (col->IsHidden())
1632             continue;      // skip it!
1633
1634         unsigned int w = col->GetWidth();
1635         if (x_start+w >= (unsigned int)update.x)
1636             break;
1637
1638         x_start += w;
1639     }
1640
1641     unsigned int col_last = col_start;
1642     unsigned int x_last = x_start;
1643     for (; col_last < cols; col_last++)
1644     {
1645         wxDataViewColumn *col = GetOwner()->GetColumnAt(col_last);
1646         if (col->IsHidden())
1647             continue;      // skip it!
1648
1649         if (x_last > (unsigned int)update.GetRight())
1650             break;
1651
1652         x_last += col->GetWidth();
1653     }
1654
1655     // Draw horizontal rules if required
1656     if ( m_owner->HasFlag(wxDV_HORIZ_RULES) )
1657     {
1658         dc.SetPen(m_penRule);
1659         dc.SetBrush(*wxTRANSPARENT_BRUSH);
1660
1661         for (unsigned int i = item_start; i <= item_last; i++)
1662         {
1663             int y = GetLineStart( i );
1664             dc.DrawLine(x_start, y, x_last, y);
1665         }
1666     }
1667
1668     // Draw vertical rules if required
1669     if ( m_owner->HasFlag(wxDV_VERT_RULES) )
1670     {
1671         dc.SetPen(m_penRule);
1672         dc.SetBrush(*wxTRANSPARENT_BRUSH);
1673
1674         // NB: Vertical rules are drawn in the last pixel of a column so that
1675         //     they align perfectly with native MSW wxHeaderCtrl as well as for
1676         //     consistency with MSW native list control. There's no vertical
1677         //     rule at the most-left side of the control.
1678
1679         int x = x_start - 1;
1680         for (unsigned int i = col_start; i < col_last; i++)
1681         {
1682             wxDataViewColumn *col = GetOwner()->GetColumnAt(i);
1683             if (col->IsHidden())
1684                 continue;       // skip it
1685
1686             x += col->GetWidth();
1687
1688             dc.DrawLine(x, GetLineStart( item_start ),
1689                         x, GetLineStart( item_last ) );
1690         }
1691     }
1692
1693     // redraw the background for the items which are selected/current
1694     for (unsigned int item = item_start; item < item_last; item++)
1695     {
1696         bool selected = m_selection.Index( item ) != wxNOT_FOUND;
1697         if (selected || item == m_currentRow)
1698         {
1699             int flags = selected ? (int)wxCONTROL_SELECTED : 0;
1700             if (item == m_currentRow)
1701                 flags |= wxCONTROL_CURRENT;
1702             if (m_hasFocus)
1703                 flags |= wxCONTROL_FOCUSED;
1704
1705             wxRect rect( x_start, GetLineStart( item ),
1706                          x_last - x_start, GetLineHeight( item ) );
1707             wxRendererNative::Get().DrawItemSelectionRect
1708                                 (
1709                                     this,
1710                                     dc,
1711                                     rect,
1712                                     flags
1713                                 );
1714         }
1715     }
1716
1717 #if wxUSE_DRAG_AND_DROP
1718     if (m_dropHint)
1719     {
1720         wxRect rect( x_start, GetLineStart( m_dropHintLine ),
1721                      x_last - x_start, GetLineHeight( m_dropHintLine ) );
1722         dc.SetPen( *wxBLACK_PEN );
1723         dc.SetBrush( *wxTRANSPARENT_BRUSH );
1724         dc.DrawRectangle( rect );
1725     }
1726 #endif // wxUSE_DRAG_AND_DROP
1727
1728     wxDataViewColumn *expander = GetOwner()->GetExpanderColumn();
1729     if (!expander)
1730     {
1731         // TODO-RTL: last column for RTL support
1732         expander = GetOwner()->GetColumnAt( 0 );
1733         GetOwner()->SetExpanderColumn(expander);
1734     }
1735
1736     // redraw all cells for all rows which must be repainted and all columns
1737     wxRect cell_rect;
1738     cell_rect.x = x_start;
1739     for (unsigned int i = col_start; i < col_last; i++)
1740     {
1741         wxDataViewColumn *col = GetOwner()->GetColumnAt( i );
1742         wxDataViewRenderer *cell = col->GetRenderer();
1743         cell_rect.width = col->GetWidth();
1744
1745         if ( col->IsHidden() || cell_rect.width <= 0 )
1746             continue;       // skip it!
1747
1748         for (unsigned int item = item_start; item < item_last; item++)
1749         {
1750             // get the cell value and set it into the renderer
1751             wxDataViewTreeNode *node = NULL;
1752             wxDataViewItem dataitem;
1753
1754             if (!IsVirtualList())
1755             {
1756                 node = GetTreeNodeByRow(item);
1757                 if( node == NULL )
1758                     continue;
1759
1760                 dataitem = node->GetItem();
1761
1762                 if ((i > 0) && model->IsContainer(dataitem) &&
1763                     !model->HasContainerColumns(dataitem))
1764                     continue;
1765             }
1766             else
1767             {
1768                 dataitem = wxDataViewItem( wxUIntToPtr(item+1) );
1769             }
1770
1771             cell->PrepareForItem(model, dataitem, col->GetModelColumn());
1772
1773             // update cell_rect
1774             cell_rect.y = GetLineStart( item );
1775             cell_rect.height = GetLineHeight( item );
1776
1777             // deal with the expander
1778             int indent = 0;
1779             if ((!IsList()) && (col == expander))
1780             {
1781                 // Calculate the indent first
1782                 indent = GetOwner()->GetIndent() * node->GetIndentLevel();
1783
1784                 // we reserve m_lineHeight of horizontal space for the expander
1785                 // but leave EXPANDER_MARGIN around the expander itself
1786                 int exp_x = cell_rect.x + indent + EXPANDER_MARGIN;
1787
1788                 indent += m_lineHeight;
1789
1790                 // draw expander if needed and visible
1791                 if ( node->HasChildren() && exp_x < cell_rect.GetRight() )
1792                 {
1793                     dc.SetPen( m_penExpander );
1794                     dc.SetBrush( wxNullBrush );
1795
1796                     int exp_size = m_lineHeight - 2*EXPANDER_MARGIN;
1797                     int exp_y = cell_rect.y + (cell_rect.height - exp_size)/2
1798                                    + EXPANDER_MARGIN - EXPANDER_OFFSET;
1799
1800                     const wxRect rect(exp_x, exp_y, exp_size, exp_size);
1801
1802                     int flag = 0;
1803                     if ( m_underMouse == node )
1804                         flag |= wxCONTROL_CURRENT;
1805                     if ( node->IsOpen() )
1806                         flag |= wxCONTROL_EXPANDED;
1807
1808                     // ensure that we don't overflow the cell (which might
1809                     // happen if the column is very narrow)
1810                     wxDCClipper clip(dc, cell_rect);
1811
1812                     wxRendererNative::Get().DrawTreeItemButton( this, dc, rect, flag);
1813                 }
1814
1815                 // force the expander column to left-center align
1816                 cell->SetAlignment( wxALIGN_CENTER_VERTICAL );
1817             }
1818             if (node && !node->HasChildren())
1819             {
1820                 // Yes, if the node does not have any child, it must be a leaf which
1821                 // mean that it is a temporarily created by GetTreeNodeByRow
1822                 wxDELETE(node);
1823             }
1824
1825             wxRect item_rect = cell_rect;
1826             item_rect.Deflate(PADDING_RIGHTLEFT, 0);
1827
1828             // account for the tree indent (harmless if we're not indented)
1829             item_rect.x += indent;
1830             item_rect.width -= indent;
1831
1832             if ( item_rect.width <= 0 )
1833                 continue;
1834
1835             int state = 0;
1836             if (m_hasFocus && (m_selection.Index(item) != wxNOT_FOUND))
1837                 state |= wxDATAVIEW_CELL_SELECTED;
1838
1839             // TODO: it would be much more efficient to create a clipping
1840             //       region for the entire column being rendered (in the OnPaint
1841             //       of wxDataViewMainWindow) instead of a single clip region for
1842             //       each cell. However it would mean that each renderer should
1843             //       respect the given wxRect's top & bottom coords, eventually
1844             //       violating only the left & right coords - however the user can
1845             //       make its own renderer and thus we cannot be sure of that.
1846             wxDCClipper clip(dc, item_rect);
1847
1848             cell->WXCallRender(item_rect, &dc, state);
1849         }
1850
1851         cell_rect.x += cell_rect.width;
1852     }
1853 }
1854
1855 void wxDataViewMainWindow::OnRenameTimer()
1856 {
1857     // We have to call this here because changes may just have
1858     // been made and no screen update taken place.
1859     if ( m_dirty )
1860     {
1861         // TODO: use wxTheApp->SafeYieldFor(NULL, wxEVT_CATEGORY_UI) instead
1862         //       (needs to be tested!)
1863         wxSafeYield();
1864     }
1865
1866     wxDataViewItem item = GetItemByRow( m_currentRow );
1867
1868     wxRect labelRect = GetItemRect(item, m_currentCol);
1869
1870     m_currentCol->GetRenderer()->StartEditing( item, labelRect );
1871 }
1872
1873 //-----------------------------------------------------------------------------
1874 // Helper class for do operation on the tree node
1875 //-----------------------------------------------------------------------------
1876 class DoJob
1877 {
1878 public:
1879     DoJob() { }
1880     virtual ~DoJob() { }
1881
1882     // The return value control how the tree-walker tranverse the tree
1883     // 0: Job done, stop tranverse and return
1884     // 1: Ignore the current node's subtree and continue
1885     // 2: Job not done, continue
1886     enum  { OK = 0 , IGR = 1, CONT = 2 };
1887     virtual int operator() ( wxDataViewTreeNode * node ) = 0;
1888     virtual int operator() ( void * n ) = 0;
1889 };
1890
1891 bool Walker( wxDataViewTreeNode * node, DoJob & func )
1892 {
1893     if( node==NULL )
1894         return false;
1895
1896     switch( func( node ) )
1897     {
1898         case DoJob::OK :
1899             return true;
1900         case DoJob::IGR:
1901             return false;
1902         case DoJob::CONT:
1903         default:
1904             ;
1905     }
1906
1907     const wxDataViewTreeNodes& nodes = node->GetNodes();
1908     const wxDataViewTreeLeaves& leaves = node->GetChildren();
1909
1910     int len_nodes = nodes.GetCount();
1911     int len = leaves.GetCount();
1912     int i = 0, nodes_i = 0;
1913
1914     for(; i < len; i ++ )
1915     {
1916         void * n = leaves[i];
1917         if( nodes_i < len_nodes && n == nodes[nodes_i]->GetItem().GetID() )
1918         {
1919             wxDataViewTreeNode * nd = nodes[nodes_i];
1920             nodes_i++;
1921
1922             if( Walker( nd , func ) )
1923                 return true;
1924
1925         }
1926         else
1927             switch( func( n ) )
1928             {
1929                 case DoJob::OK :
1930                     return true;
1931                 case DoJob::IGR:
1932                     continue;
1933                 case DoJob::CONT:
1934                 default:
1935                 ;
1936             }
1937     }
1938     return false;
1939 }
1940
1941 bool wxDataViewMainWindow::ItemAdded(const wxDataViewItem & parent, const wxDataViewItem & item)
1942 {
1943     GetOwner()->InvalidateColBestWidths();
1944
1945     if (IsVirtualList())
1946     {
1947         wxDataViewVirtualListModel *list_model =
1948             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
1949         m_count = list_model->GetCount();
1950         UpdateDisplay();
1951         return true;
1952     }
1953
1954     SortPrepare();
1955
1956     wxDataViewTreeNode * node;
1957     node = FindNode(parent);
1958
1959     if( node == NULL )
1960         return false;
1961
1962     node->SetHasChildren( true );
1963
1964     if( g_model->IsContainer( item ) )
1965     {
1966         wxDataViewTreeNode * newnode = new wxDataViewTreeNode( node );
1967         newnode->SetItem(item);
1968         newnode->SetHasChildren( true );
1969         node->AddNode( newnode);
1970     }
1971     else
1972         node->AddLeaf( item.GetID() );
1973
1974     node->ChangeSubTreeCount(1);
1975
1976     m_count = -1;
1977     UpdateDisplay();
1978
1979     return true;
1980 }
1981
1982 static void DestroyTreeHelper( wxDataViewTreeNode * node);
1983
1984 bool wxDataViewMainWindow::ItemDeleted(const wxDataViewItem& parent,
1985                                        const wxDataViewItem& item)
1986 {
1987     GetOwner()->InvalidateColBestWidths();
1988
1989     if (IsVirtualList())
1990     {
1991         wxDataViewVirtualListModel *list_model =
1992             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
1993         m_count = list_model->GetCount();
1994
1995         if( m_currentRow > GetRowCount() )
1996             m_currentRow = m_count - 1;
1997
1998         // TODO: why empty the entire selection?
1999         m_selection.Empty();
2000
2001         UpdateDisplay();
2002
2003         return true;
2004     }
2005
2006     wxDataViewTreeNode * node = FindNode(parent);
2007
2008     // Notice that it is possible that the item being deleted is not in the
2009     // tree at all, for example we could be deleting a never shown (because
2010     // collapsed) item in a tree model. So it's not an error if we don't know
2011     // about this item, just return without doing anything then.
2012     if ( !node || node->GetChildren().Index(item.GetID()) == wxNOT_FOUND )
2013         return false;
2014
2015     int sub = -1;
2016     node->GetChildren().Remove( item.GetID() );
2017     // Manipolate selection
2018     if( m_selection.GetCount() > 1 )
2019     {
2020         m_selection.Empty();
2021     }
2022     bool isContainer = false;
2023     wxDataViewTreeNodes nds = node->GetNodes();
2024     for (size_t i = 0; i < nds.GetCount(); i ++)
2025     {
2026         if (nds[i]->GetItem() == item)
2027         {
2028             isContainer = true;
2029             break;
2030         }
2031     }
2032     if( isContainer )
2033     {
2034         wxDataViewTreeNode * n = NULL;
2035         wxDataViewTreeNodes nodes = node->GetNodes();
2036         int len = nodes.GetCount();
2037         for( int i = 0; i < len; i ++)
2038         {
2039             if( nodes[i]->GetItem() == item )
2040             {
2041                 n = nodes[i];
2042                 break;
2043             }
2044         }
2045
2046         wxCHECK_MSG( n != NULL, false, "item not found" );
2047
2048         node->GetNodes().Remove( n );
2049         sub -= n->GetSubTreeCount();
2050         ::DestroyTreeHelper(n);
2051     }
2052     // Make the row number invalid and get a new valid one when user call GetRowCount
2053     m_count = -1;
2054     node->ChangeSubTreeCount(sub);
2055
2056     // Change the current row to the last row if the current exceed the max row number
2057     if( m_currentRow > GetRowCount() )
2058         m_currentRow = m_count - 1;
2059
2060     UpdateDisplay();
2061
2062     return true;
2063 }
2064
2065 bool wxDataViewMainWindow::ItemChanged(const wxDataViewItem & item)
2066 {
2067     GetOwner()->InvalidateColBestWidths();
2068
2069     SortPrepare();
2070     g_model->Resort();
2071
2072     // Send event
2073     wxWindow *parent = GetParent();
2074     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
2075     le.SetEventObject(parent);
2076     le.SetModel(GetOwner()->GetModel());
2077     le.SetItem(item);
2078     parent->GetEventHandler()->ProcessEvent(le);
2079
2080     return true;
2081 }
2082
2083 bool wxDataViewMainWindow::ValueChanged( const wxDataViewItem & item, unsigned int model_column )
2084 {
2085     int view_column = -1;
2086     unsigned int n_col = m_owner->GetColumnCount();
2087     for (unsigned i = 0; i < n_col; i++)
2088     {
2089         wxDataViewColumn *column = m_owner->GetColumn( i );
2090         if (column->GetModelColumn() == model_column)
2091         {
2092             view_column = (int) i;
2093             break;
2094         }
2095     }
2096     if (view_column == -1)
2097         return false;
2098
2099     GetOwner()->InvalidateColBestWidth(view_column);
2100
2101     // NOTE: to be valid, we cannot use e.g. INT_MAX - 1
2102 /*#define MAX_VIRTUAL_WIDTH       100000
2103
2104     wxRect rect( 0, row*m_lineHeight, MAX_VIRTUAL_WIDTH, m_lineHeight );
2105     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2106     Refresh( true, &rect );
2107
2108     return true;
2109 */
2110     SortPrepare();
2111     g_model->Resort();
2112
2113     // Send event
2114     wxWindow *parent = GetParent();
2115     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
2116     le.SetEventObject(parent);
2117     le.SetModel(GetOwner()->GetModel());
2118     le.SetItem(item);
2119     le.SetColumn(view_column);
2120     le.SetDataViewColumn(GetOwner()->GetColumn(view_column));
2121     parent->GetEventHandler()->ProcessEvent(le);
2122
2123     return true;
2124 }
2125
2126 bool wxDataViewMainWindow::Cleared()
2127 {
2128     GetOwner()->InvalidateColBestWidths();
2129
2130     DestroyTree();
2131     m_selection.Clear();
2132
2133     SortPrepare();
2134     BuildTree( GetOwner()->GetModel() );
2135
2136     UpdateDisplay();
2137
2138     return true;
2139 }
2140
2141 void wxDataViewMainWindow::UpdateDisplay()
2142 {
2143     m_dirty = true;
2144     m_underMouse = NULL;
2145 }
2146
2147 void wxDataViewMainWindow::OnInternalIdle()
2148 {
2149     wxWindow::OnInternalIdle();
2150
2151     if (m_dirty)
2152     {
2153         RecalculateDisplay();
2154         m_dirty = false;
2155     }
2156 }
2157
2158 void wxDataViewMainWindow::RecalculateDisplay()
2159 {
2160     wxDataViewModel *model = GetOwner()->GetModel();
2161     if (!model)
2162     {
2163         Refresh();
2164         return;
2165     }
2166
2167     int width = GetEndOfLastCol();
2168     int height = GetLineStart( GetRowCount() );
2169
2170     SetVirtualSize( width, height );
2171     GetOwner()->SetScrollRate( 10, m_lineHeight );
2172
2173     Refresh();
2174 }
2175
2176 void wxDataViewMainWindow::ScrollWindow( int dx, int dy, const wxRect *rect )
2177 {
2178     m_underMouse = NULL;
2179
2180     wxWindow::ScrollWindow( dx, dy, rect );
2181
2182     if (GetOwner()->m_headerArea)
2183         GetOwner()->m_headerArea->ScrollWindow( dx, 0 );
2184 }
2185
2186 void wxDataViewMainWindow::ScrollTo( int rows, int column )
2187 {
2188     m_underMouse = NULL;
2189
2190     int x, y;
2191     m_owner->GetScrollPixelsPerUnit( &x, &y );
2192     int sy = GetLineStart( rows )/y;
2193     int sx = 0;
2194     if( column != -1 )
2195     {
2196         wxRect rect = GetClientRect();
2197         int colnum = 0;
2198         int x_start, w = 0;
2199         int xx, yy, xe;
2200         m_owner->CalcUnscrolledPosition( rect.x, rect.y, &xx, &yy );
2201         for (x_start = 0; colnum < column; colnum++)
2202         {
2203             wxDataViewColumn *col = GetOwner()->GetColumnAt(colnum);
2204             if (col->IsHidden())
2205                 continue;      // skip it!
2206
2207             w = col->GetWidth();
2208             x_start += w;
2209         }
2210
2211         int x_end = x_start + w;
2212         xe = xx + rect.width;
2213         if( x_end > xe )
2214         {
2215             sx = ( xx + x_end - xe )/x;
2216         }
2217         if( x_start < xx )
2218         {
2219             sx = x_start/x;
2220         }
2221     }
2222     m_owner->Scroll( sx, sy );
2223 }
2224
2225 int wxDataViewMainWindow::GetCountPerPage() const
2226 {
2227     wxSize size = GetClientSize();
2228     return size.y / m_lineHeight;
2229 }
2230
2231 int wxDataViewMainWindow::GetEndOfLastCol() const
2232 {
2233     int width = 0;
2234     unsigned int i;
2235     for (i = 0; i < GetOwner()->GetColumnCount(); i++)
2236     {
2237         const wxDataViewColumn *c =
2238             const_cast<wxDataViewCtrl*>(GetOwner())->GetColumnAt( i );
2239
2240         if (!c->IsHidden())
2241             width += c->GetWidth();
2242     }
2243     return width;
2244 }
2245
2246 unsigned int wxDataViewMainWindow::GetFirstVisibleRow() const
2247 {
2248     int x = 0;
2249     int y = 0;
2250     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
2251
2252     return GetLineAt( y );
2253 }
2254
2255 unsigned int wxDataViewMainWindow::GetLastVisibleRow()
2256 {
2257     wxSize client_size = GetClientSize();
2258     m_owner->CalcUnscrolledPosition( client_size.x, client_size.y,
2259                                     &client_size.x, &client_size.y );
2260
2261     // we should deal with the pixel here
2262     unsigned int row = GetLineAt(client_size.y) - 1;
2263
2264     return wxMin( GetRowCount()-1, row );
2265 }
2266
2267 unsigned int wxDataViewMainWindow::GetRowCount()
2268 {
2269     if ( m_count == -1 )
2270     {
2271         m_count = RecalculateCount();
2272         UpdateDisplay();
2273     }
2274     return m_count;
2275 }
2276
2277 void wxDataViewMainWindow::ChangeCurrentRow( unsigned int row )
2278 {
2279     m_currentRow = row;
2280
2281     // send event
2282 }
2283
2284 void wxDataViewMainWindow::SelectAllRows( bool on )
2285 {
2286     if (IsEmpty())
2287         return;
2288
2289     if (on)
2290     {
2291         m_selection.Clear();
2292         for (unsigned int i = 0; i < GetRowCount(); i++)
2293             m_selection.Add( i );
2294         Refresh();
2295     }
2296     else
2297     {
2298         unsigned int first_visible = GetFirstVisibleRow();
2299         unsigned int last_visible = GetLastVisibleRow();
2300         unsigned int i;
2301         for (i = 0; i < m_selection.GetCount(); i++)
2302         {
2303             unsigned int row = m_selection[i];
2304             if ((row >= first_visible) && (row <= last_visible))
2305                 RefreshRow( row );
2306         }
2307         m_selection.Clear();
2308     }
2309 }
2310
2311 void wxDataViewMainWindow::SelectRow( unsigned int row, bool on )
2312 {
2313     if (m_selection.Index( row ) == wxNOT_FOUND)
2314     {
2315         if (on)
2316         {
2317             m_selection.Add( row );
2318             RefreshRow( row );
2319         }
2320     }
2321     else
2322     {
2323         if (!on)
2324         {
2325             m_selection.Remove( row );
2326             RefreshRow( row );
2327         }
2328     }
2329 }
2330
2331 void wxDataViewMainWindow::SelectRows( unsigned int from, unsigned int to, bool on )
2332 {
2333     if (from > to)
2334     {
2335         unsigned int tmp = from;
2336         from = to;
2337         to = tmp;
2338     }
2339
2340     unsigned int i;
2341     for (i = from; i <= to; i++)
2342     {
2343         if (m_selection.Index( i ) == wxNOT_FOUND)
2344         {
2345             if (on)
2346                 m_selection.Add( i );
2347         }
2348         else
2349         {
2350             if (!on)
2351                 m_selection.Remove( i );
2352         }
2353     }
2354     RefreshRows( from, to );
2355 }
2356
2357 void wxDataViewMainWindow::Select( const wxArrayInt& aSelections )
2358 {
2359     for (size_t i=0; i < aSelections.GetCount(); i++)
2360     {
2361         int n = aSelections[i];
2362
2363         m_selection.Add( n );
2364         RefreshRow( n );
2365     }
2366 }
2367
2368 void wxDataViewMainWindow::ReverseRowSelection( unsigned int row )
2369 {
2370     if (m_selection.Index( row ) == wxNOT_FOUND)
2371         m_selection.Add( row );
2372     else
2373         m_selection.Remove( row );
2374     RefreshRow( row );
2375 }
2376
2377 bool wxDataViewMainWindow::IsRowSelected( unsigned int row )
2378 {
2379     return (m_selection.Index( row ) != wxNOT_FOUND);
2380 }
2381
2382 void wxDataViewMainWindow::SendSelectionChangedEvent( const wxDataViewItem& item)
2383 {
2384     wxWindow *parent = GetParent();
2385     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED, parent->GetId());
2386
2387     le.SetEventObject(parent);
2388     le.SetModel(GetOwner()->GetModel());
2389     le.SetItem( item );
2390
2391     parent->GetEventHandler()->ProcessEvent(le);
2392 }
2393
2394 void wxDataViewMainWindow::RefreshRow( unsigned int row )
2395 {
2396     wxRect rect( 0, GetLineStart( row ), GetEndOfLastCol(), GetLineHeight( row ) );
2397     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2398
2399     wxSize client_size = GetClientSize();
2400     wxRect client_rect( 0, 0, client_size.x, client_size.y );
2401     wxRect intersect_rect = client_rect.Intersect( rect );
2402     if (intersect_rect.width > 0)
2403         Refresh( true, &intersect_rect );
2404 }
2405
2406 void wxDataViewMainWindow::RefreshRows( unsigned int from, unsigned int to )
2407 {
2408     if (from > to)
2409     {
2410         unsigned int tmp = to;
2411         to = from;
2412         from = tmp;
2413     }
2414
2415     wxRect rect( 0, GetLineStart( from ), GetEndOfLastCol(), GetLineStart( (to-from+1) ) );
2416     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2417
2418     wxSize client_size = GetClientSize();
2419     wxRect client_rect( 0, 0, client_size.x, client_size.y );
2420     wxRect intersect_rect = client_rect.Intersect( rect );
2421     if (intersect_rect.width > 0)
2422         Refresh( true, &intersect_rect );
2423 }
2424
2425 void wxDataViewMainWindow::RefreshRowsAfter( unsigned int firstRow )
2426 {
2427     wxSize client_size = GetClientSize();
2428     int start = GetLineStart( firstRow );
2429     m_owner->CalcScrolledPosition( start, 0, &start, NULL );
2430     if (start > client_size.y) return;
2431
2432     wxRect rect( 0, start, client_size.x, client_size.y - start );
2433
2434     Refresh( true, &rect );
2435 }
2436
2437 void wxDataViewMainWindow::OnArrowChar(unsigned int newCurrent, const wxKeyEvent& event)
2438 {
2439     wxCHECK_RET( newCurrent < GetRowCount(),
2440                 wxT("invalid item index in OnArrowChar()") );
2441
2442     // if there is no selection, we cannot move it anywhere
2443     if (!HasCurrentRow())
2444         return;
2445
2446     unsigned int oldCurrent = m_currentRow;
2447
2448     // in single selection we just ignore Shift as we can't select several
2449     // items anyhow
2450     if ( event.ShiftDown() && !IsSingleSel() )
2451     {
2452         RefreshRow( oldCurrent );
2453
2454         ChangeCurrentRow( newCurrent );
2455
2456         // select all the items between the old and the new one
2457         if ( oldCurrent > newCurrent )
2458         {
2459             newCurrent = oldCurrent;
2460             oldCurrent = m_currentRow;
2461         }
2462
2463         SelectRows( oldCurrent, newCurrent, true );
2464         if (oldCurrent!=newCurrent)
2465             SendSelectionChangedEvent(GetItemByRow(m_selection[0]));
2466     }
2467     else // !shift
2468     {
2469         RefreshRow( oldCurrent );
2470
2471         // all previously selected items are unselected unless ctrl is held
2472         if ( !event.ControlDown() )
2473             SelectAllRows(false);
2474
2475         ChangeCurrentRow( newCurrent );
2476
2477         if ( !event.ControlDown() )
2478         {
2479             SelectRow( m_currentRow, true );
2480             SendSelectionChangedEvent(GetItemByRow(m_currentRow));
2481         }
2482         else
2483             RefreshRow( m_currentRow );
2484     }
2485
2486     GetOwner()->EnsureVisible( m_currentRow, -1 );
2487 }
2488
2489 wxRect wxDataViewMainWindow::GetLineRect( unsigned int row ) const
2490 {
2491     wxRect rect;
2492     rect.x = 0;
2493     rect.y = GetLineStart( row );
2494     rect.width = GetEndOfLastCol();
2495     rect.height = GetLineHeight( row );
2496
2497     return rect;
2498 }
2499
2500 int wxDataViewMainWindow::GetLineStart( unsigned int row ) const
2501 {
2502     const wxDataViewModel *model = GetOwner()->GetModel();
2503
2504     if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
2505     {
2506         // TODO make more efficient
2507
2508         int start = 0;
2509
2510         unsigned int r;
2511         for (r = 0; r < row; r++)
2512         {
2513             const wxDataViewTreeNode* node = GetTreeNodeByRow(r);
2514             if (!node) return start;
2515
2516             wxDataViewItem item = node->GetItem();
2517
2518             if (node && !node->HasChildren())
2519             {
2520                 // Yes, if the node does not have any child, it must be a leaf which
2521                 // mean that it is a temporarily created by GetTreeNodeByRow
2522                 wxDELETE(node);
2523             }
2524
2525             unsigned int cols = GetOwner()->GetColumnCount();
2526             unsigned int col;
2527             int height = m_lineHeight;
2528             for (col = 0; col < cols; col++)
2529             {
2530                 const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2531                 if (column->IsHidden())
2532                     continue;      // skip it!
2533
2534                 if ((col != 0) &&
2535                     model->IsContainer(item) &&
2536                     !model->HasContainerColumns(item))
2537                     continue;      // skip it!
2538
2539                 wxDataViewRenderer *renderer =
2540                     const_cast<wxDataViewRenderer*>(column->GetRenderer());
2541                 renderer->PrepareForItem(model, item, column->GetModelColumn());
2542
2543                 height = wxMax( height, renderer->GetSize().y );
2544             }
2545
2546             start += height;
2547         }
2548
2549         return start;
2550     }
2551     else
2552     {
2553         return row * m_lineHeight;
2554     }
2555 }
2556
2557 int wxDataViewMainWindow::GetLineAt( unsigned int y ) const
2558 {
2559     const wxDataViewModel *model = GetOwner()->GetModel();
2560
2561     // check for the easy case first
2562     if ( !GetOwner()->HasFlag(wxDV_VARIABLE_LINE_HEIGHT) )
2563         return y / m_lineHeight;
2564
2565     // TODO make more efficient
2566     unsigned int row = 0;
2567     unsigned int yy = 0;
2568     for (;;)
2569     {
2570         const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
2571         if (!node)
2572         {
2573             // not really correct...
2574             return row + ((y-yy) / m_lineHeight);
2575         }
2576
2577         wxDataViewItem item = node->GetItem();
2578
2579         if (node && !node->HasChildren())
2580         {
2581             // Yes, if the node does not have any child, it must be a leaf which
2582             // mean that it is a temporarily created by GetTreeNodeByRow
2583             wxDELETE(node);
2584         }
2585
2586         unsigned int cols = GetOwner()->GetColumnCount();
2587         unsigned int col;
2588         int height = m_lineHeight;
2589         for (col = 0; col < cols; col++)
2590         {
2591             const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2592             if (column->IsHidden())
2593                 continue;      // skip it!
2594
2595             if ((col != 0) &&
2596                 model->IsContainer(item) &&
2597                 !model->HasContainerColumns(item))
2598                 continue;      // skip it!
2599
2600             wxDataViewRenderer *renderer =
2601                 const_cast<wxDataViewRenderer*>(column->GetRenderer());
2602             renderer->PrepareForItem(model, item, column->GetModelColumn());
2603
2604             height = wxMax( height, renderer->GetSize().y );
2605         }
2606
2607         yy += height;
2608         if (y < yy)
2609             return row;
2610
2611         row++;
2612     }
2613 }
2614
2615 int wxDataViewMainWindow::GetLineHeight( unsigned int row ) const
2616 {
2617     const wxDataViewModel *model = GetOwner()->GetModel();
2618
2619     if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
2620     {
2621         wxASSERT( !IsVirtualList() );
2622
2623         const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
2624         // wxASSERT( node );
2625         if (!node) return m_lineHeight;
2626
2627         wxDataViewItem item = node->GetItem();
2628
2629         if (node && !node->HasChildren())
2630         {
2631                 // Yes, if the node does not have any child, it must be a leaf which
2632                 // mean that it is a temporarily created by GetTreeNodeByRow
2633             wxDELETE(node);
2634         }
2635
2636         int height = m_lineHeight;
2637
2638         unsigned int cols = GetOwner()->GetColumnCount();
2639         unsigned int col;
2640         for (col = 0; col < cols; col++)
2641         {
2642             const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2643             if (column->IsHidden())
2644                 continue;      // skip it!
2645
2646             if ((col != 0) &&
2647                 model->IsContainer(item) &&
2648                 !model->HasContainerColumns(item))
2649                 continue;      // skip it!
2650
2651             wxDataViewRenderer *renderer =
2652                 const_cast<wxDataViewRenderer*>(column->GetRenderer());
2653             renderer->PrepareForItem(model, item, column->GetModelColumn());
2654
2655             height = wxMax( height, renderer->GetSize().y );
2656         }
2657
2658         return height;
2659     }
2660     else
2661     {
2662         return m_lineHeight;
2663     }
2664 }
2665
2666 class RowToItemJob: public DoJob
2667 {
2668 public:
2669     RowToItemJob( unsigned int row , int current )
2670         { this->row = row; this->current = current; }
2671     virtual ~RowToItemJob() {}
2672
2673     virtual int operator() ( wxDataViewTreeNode * node )
2674     {
2675         current ++;
2676         if( current == static_cast<int>(row))
2677         {
2678             ret = node->GetItem();
2679             return DoJob::OK;
2680         }
2681
2682         if( node->GetSubTreeCount() + current < static_cast<int>(row) )
2683         {
2684             current += node->GetSubTreeCount();
2685             return  DoJob::IGR;
2686         }
2687         else
2688         {
2689             // If the current has no child node, we can find the desired item of the row
2690             // number directly.
2691             // This if can speed up finding in some case, and will has a very good effect
2692             // when it comes to list view
2693             if( node->GetNodes().GetCount() == 0)
2694             {
2695                 int index = static_cast<int>(row) - current - 1;
2696                 ret = node->GetChildren().Item( index );
2697                 return DoJob::OK;
2698             }
2699             return DoJob::CONT;
2700         }
2701     }
2702
2703     virtual int operator() ( void * n )
2704     {
2705         current ++;
2706         if( current == static_cast<int>(row))
2707         {
2708             ret = wxDataViewItem( n );
2709             return DoJob::OK;
2710         }
2711         return DoJob::CONT;
2712     }
2713
2714     wxDataViewItem GetResult() const
2715         { return ret; }
2716
2717 private:
2718     unsigned int row;
2719     int current;
2720     wxDataViewItem ret;
2721 };
2722
2723 wxDataViewItem wxDataViewMainWindow::GetItemByRow(unsigned int row) const
2724 {
2725     if (IsVirtualList())
2726     {
2727         return wxDataViewItem( wxUIntToPtr(row+1) );
2728     }
2729     else
2730     {
2731         RowToItemJob job( row, -2 );
2732         Walker( m_root , job );
2733         return job.GetResult();
2734     }
2735 }
2736
2737 class RowToTreeNodeJob: public DoJob
2738 {
2739 public:
2740     RowToTreeNodeJob( unsigned int row , int current, wxDataViewTreeNode * node )
2741     {
2742         this->row = row;
2743         this->current = current;
2744         ret = NULL;
2745         parent = node;
2746     }
2747     virtual ~RowToTreeNodeJob(){ }
2748
2749     virtual int operator() ( wxDataViewTreeNode * node )
2750     {
2751         current ++;
2752         if( current == static_cast<int>(row))
2753         {
2754             ret = node;
2755             return DoJob::OK;
2756         }
2757
2758         if( node->GetSubTreeCount() + current < static_cast<int>(row) )
2759         {
2760             current += node->GetSubTreeCount();
2761             return  DoJob::IGR;
2762         }
2763         else
2764         {
2765             parent = node;
2766
2767             // If the current node has no children, we can find the desired item of the
2768             // row number directly.
2769             // This if can speed up finding in some case, and will have a very good
2770             // effect for list views.
2771             if( node->GetNodes().GetCount() == 0)
2772             {
2773                 int index = static_cast<int>(row) - current - 1;
2774                 void * n = node->GetChildren().Item( index );
2775                 ret = new wxDataViewTreeNode( parent );
2776                 ret->SetItem( wxDataViewItem( n ));
2777                 ret->SetHasChildren(false);
2778                 return DoJob::OK;
2779             }
2780             return DoJob::CONT;
2781         }
2782     }
2783
2784     virtual int operator() ( void * n )
2785     {
2786         current ++;
2787         if( current == static_cast<int>(row))
2788         {
2789             ret = new wxDataViewTreeNode( parent );
2790             ret->SetItem( wxDataViewItem( n ));
2791             ret->SetHasChildren(false);
2792             return DoJob::OK;
2793         }
2794
2795         return DoJob::CONT;
2796     }
2797
2798     wxDataViewTreeNode * GetResult() const
2799         { return ret; }
2800
2801 private:
2802     unsigned int row;
2803     int current;
2804     wxDataViewTreeNode * ret;
2805     wxDataViewTreeNode * parent;
2806 };
2807
2808 wxDataViewTreeNode * wxDataViewMainWindow::GetTreeNodeByRow(unsigned int row) const
2809 {
2810     wxASSERT( !IsVirtualList() );
2811
2812     RowToTreeNodeJob job( row , -2, m_root );
2813     Walker( m_root , job );
2814     return job.GetResult();
2815 }
2816
2817 wxDataViewEvent wxDataViewMainWindow::SendExpanderEvent( wxEventType type,
2818                                                          const wxDataViewItem & item )
2819 {
2820     wxWindow *parent = GetParent();
2821     wxDataViewEvent le(type, parent->GetId());
2822
2823     le.SetEventObject(parent);
2824     le.SetModel(GetOwner()->GetModel());
2825     le.SetItem( item );
2826
2827     parent->GetEventHandler()->ProcessEvent(le);
2828     return le;
2829 }
2830
2831 bool wxDataViewMainWindow::IsExpanded( unsigned int row ) const
2832 {
2833     if (IsList())
2834         return false;
2835
2836     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2837     if (!node)
2838         return false;
2839
2840     if (!node->HasChildren())
2841     {
2842         delete node;
2843         return false;
2844     }
2845
2846     return node->IsOpen();
2847 }
2848
2849 bool wxDataViewMainWindow::HasChildren( unsigned int row ) const
2850 {
2851     if (IsList())
2852         return false;
2853
2854     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2855     if (!node)
2856         return false;
2857
2858     if (!node->HasChildren())
2859     {
2860         delete node;
2861         return false;
2862     }
2863
2864     return true;
2865 }
2866
2867 void wxDataViewMainWindow::Expand( unsigned int row )
2868 {
2869     if (IsList())
2870         return;
2871
2872     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2873     if (!node)
2874         return;
2875
2876     if (!node->HasChildren())
2877     {
2878         delete node;
2879         return;
2880     }
2881
2882             if (!node->IsOpen())
2883             {
2884                 wxDataViewEvent e =
2885                     SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, node->GetItem());
2886
2887                 // Check if the user prevent expanding
2888                 if( e.GetSkipped() )
2889                     return;
2890
2891                 node->ToggleOpen();
2892
2893                 // build the children of current node
2894                 if( node->GetChildrenNumber() == 0 )
2895                 {
2896                     SortPrepare();
2897                     ::BuildTreeHelper(GetOwner()->GetModel(), node->GetItem(), node);
2898                 }
2899
2900                 // By expanding the node all row indices that are currently in the selection list
2901                 // and are greater than our node have become invalid. So we have to correct that now.
2902                 const unsigned rowAdjustment = node->GetSubTreeCount();
2903                 for(unsigned i=0; i<m_selection.size(); ++i)
2904                 {
2905                     const unsigned testRow = m_selection[i];
2906                     // all rows above us are not affected, so skip them
2907                     if(testRow <= row)
2908                         continue;
2909
2910                     m_selection[i] += rowAdjustment;
2911                 }
2912
2913                 if(m_currentRow > row)
2914                     ChangeCurrentRow(m_currentRow + rowAdjustment);
2915
2916                 m_count = -1;
2917                 UpdateDisplay();
2918                 // Send the expanded event
2919                 SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED,node->GetItem());
2920             }
2921 }
2922
2923 void wxDataViewMainWindow::Collapse(unsigned int row)
2924 {
2925     if (IsList())
2926         return;
2927
2928     wxDataViewTreeNode *node = GetTreeNodeByRow(row);
2929     if (!node)
2930         return;
2931
2932     if (!node->HasChildren())
2933     {
2934         delete node;
2935         return;
2936     }
2937
2938         if (node->IsOpen())
2939         {
2940             wxDataViewEvent e =
2941                 SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING,node->GetItem());
2942             if( e.GetSkipped() )
2943                 return;
2944
2945             // Find out if there are selected items below the current node.
2946             bool selectCollapsingRow = false;
2947             const unsigned rowAdjustment = node->GetSubTreeCount();
2948             unsigned maxRowToBeTested = row + rowAdjustment;
2949             for(unsigned i=0; i<m_selection.size(); ++i)
2950             {
2951                 const unsigned testRow = m_selection[i];
2952                 if(testRow > row && testRow <= maxRowToBeTested)
2953                 {
2954                     selectCollapsingRow = true;
2955                     // get out as soon as we have found a node that is selected
2956                     break;
2957                 }
2958             }
2959
2960             node->ToggleOpen();
2961
2962             // If the node to be closed has selected items the user won't see those any longer.
2963             // We select the collapsing node in this case.
2964             if(selectCollapsingRow)
2965             {
2966                 SelectAllRows(false);
2967                 ChangeCurrentRow(row);
2968                 SelectRow(row, true);
2969                 SendSelectionChangedEvent(GetItemByRow(row));
2970             }
2971             else
2972             {
2973                 // if there were no selected items below our node we still need to "fix" the
2974                 // selection list to adjust for the changing of the row indices.
2975                 // We actually do the opposite of what we are doing in Expand().
2976                 for(unsigned i=0; i<m_selection.size(); ++i)
2977                 {
2978                     const unsigned testRow = m_selection[i];
2979                     // all rows above us are not affected, so skip them
2980                     if(testRow <= row)
2981                         continue;
2982
2983                     m_selection[i] -= rowAdjustment;
2984                 }
2985
2986                 // if the "current row" is being collapsed away we change it to the current row ;-)
2987                 if(m_currentRow > row && m_currentRow <= maxRowToBeTested)
2988                     ChangeCurrentRow(row);
2989                 else if(m_currentRow > row)
2990                     ChangeCurrentRow(m_currentRow - rowAdjustment);
2991             }
2992
2993             m_count = -1;
2994             UpdateDisplay();
2995             SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED,node->GetItem());
2996         }
2997 }
2998
2999 wxDataViewTreeNode * wxDataViewMainWindow::FindNode( const wxDataViewItem & item )
3000 {
3001     const wxDataViewModel * model = GetOwner()->GetModel();
3002     if( model == NULL )
3003         return NULL;
3004
3005     if (!item.IsOk())
3006         return m_root;
3007
3008     // Compose the parent-chain for the item we are looking for
3009     wxVector<wxDataViewItem> parentChain;
3010     wxDataViewItem it( item );
3011     while( it.IsOk() )
3012     {
3013         parentChain.push_back(it);
3014         it = model->GetParent(it);
3015     }
3016
3017     // Find the item along the parent-chain.
3018     // This algorithm is designed to speed up the node-finding method
3019     wxDataViewTreeNode* node = m_root;
3020     for( unsigned iter = parentChain.size()-1; iter>=0; --iter )
3021     {
3022         if( node->HasChildren() )
3023         {
3024             if( node->GetChildrenNumber() == 0 )
3025             {
3026                 SortPrepare();
3027                 ::BuildTreeHelper(model, node->GetItem(), node);
3028             }
3029
3030             const wxDataViewTreeNodes& nodes = node->GetNodes();
3031             bool found = false;
3032
3033             for (unsigned i = 0; i < nodes.GetCount(); ++i)
3034             {
3035                 wxDataViewTreeNode* currentNode = nodes[i];
3036                 if (currentNode->GetItem() == parentChain[iter])
3037                 {
3038                     if (currentNode->GetItem() == item)
3039                         return currentNode;
3040
3041                     node = currentNode;
3042                     found = true;
3043                     break;
3044                 }
3045             }
3046             if (!found)
3047                 return NULL;
3048         }
3049         else
3050             return NULL;
3051     }
3052     return NULL;
3053 }
3054
3055 void wxDataViewMainWindow::HitTest( const wxPoint & point, wxDataViewItem & item,
3056                                     wxDataViewColumn* &column )
3057 {
3058     wxDataViewColumn *col = NULL;
3059     unsigned int cols = GetOwner()->GetColumnCount();
3060     unsigned int colnum = 0;
3061     int x, y;
3062     m_owner->CalcUnscrolledPosition( point.x, point.y, &x, &y );
3063     for (unsigned x_start = 0; colnum < cols; colnum++)
3064     {
3065         col = GetOwner()->GetColumnAt(colnum);
3066         if (col->IsHidden())
3067             continue;      // skip it!
3068
3069         unsigned int w = col->GetWidth();
3070         if (x_start+w >= (unsigned int)x)
3071             break;
3072
3073         x_start += w;
3074     }
3075
3076     column = col;
3077     item = GetItemByRow( GetLineAt( y ) );
3078 }
3079
3080 wxRect wxDataViewMainWindow::GetItemRect( const wxDataViewItem & item,
3081                                           const wxDataViewColumn* column )
3082 {
3083     int xpos = 0;
3084     int width = 0;
3085
3086     unsigned int cols = GetOwner()->GetColumnCount();
3087     // If column is null the loop will compute the combined width of all columns.
3088     // Otherwise, it will compute the x position of the column we are looking for.
3089     for (unsigned int i = 0; i < cols; i++)
3090     {
3091         wxDataViewColumn* col = GetOwner()->GetColumnAt( i );
3092
3093         if (col == column)
3094             break;
3095
3096         if (col->IsHidden())
3097             continue;      // skip it!
3098
3099         xpos += col->GetWidth();
3100         width += col->GetWidth();
3101     }
3102
3103     if(column != 0)
3104     {
3105         // If we have a column, we need can get its width directly.
3106         if(column->IsHidden())
3107             width = 0;
3108         else
3109             width = column->GetWidth();
3110
3111     }
3112     else
3113     {
3114         // If we have no column, we reset the x position back to zero.
3115         xpos = 0;
3116     }
3117
3118     // we have to take an expander column into account and compute its indentation
3119     // to get the correct x position where the actual text is
3120     int indent = 0;
3121     int row = GetRowByItem(item);
3122     if (!IsList() && (column == 0 || GetOwner()->GetExpanderColumn() == column) )
3123     {
3124         wxDataViewTreeNode* node = GetTreeNodeByRow(row);
3125         indent = GetOwner()->GetIndent() * node->GetIndentLevel();
3126         indent = indent + m_lineHeight; // use m_lineHeight as the width of the expander
3127
3128         if(!node->HasChildren())
3129             delete node;
3130     }
3131
3132     wxRect itemRect( xpos + indent,
3133                      GetLineStart( row ),
3134                      width - indent,
3135                      GetLineHeight( row ) );
3136
3137     GetOwner()->CalcScrolledPosition(  itemRect.x,  itemRect.y,
3138                                       &itemRect.x, &itemRect.y );
3139
3140     return itemRect;
3141 }
3142
3143 int wxDataViewMainWindow::RecalculateCount()
3144 {
3145     if (IsVirtualList())
3146     {
3147         wxDataViewVirtualListModel *list_model =
3148             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
3149
3150         return list_model->GetCount();
3151     }
3152     else
3153     {
3154         return m_root->GetSubTreeCount();
3155     }
3156 }
3157
3158 class ItemToRowJob : public DoJob
3159 {
3160 public:
3161     ItemToRowJob(const wxDataViewItem& item_, wxVector<wxDataViewItem>::reverse_iterator iter)
3162         : m_iter(iter),
3163         item(item_)
3164     {
3165         ret = -1;
3166     }
3167
3168     // Maybe binary search will help to speed up this process
3169     virtual int operator() ( wxDataViewTreeNode * node)
3170     {
3171         ret ++;
3172         if( node->GetItem() == item )
3173         {
3174             return DoJob::OK;
3175         }
3176
3177         if( node->GetItem() == *m_iter )
3178         {
3179             m_iter++;
3180             return DoJob::CONT;
3181         }
3182         else
3183         {
3184             ret += node->GetSubTreeCount();
3185             return DoJob::IGR;
3186         }
3187
3188     }
3189
3190     virtual int operator() ( void * n )
3191     {
3192         ret ++;
3193         if( n == item.GetID() )
3194             return DoJob::OK;
3195         return DoJob::CONT;
3196     }
3197
3198     // the row number is begin from zero
3199     int GetResult() const
3200         { return ret -1; }
3201
3202 private:
3203     wxVector<wxDataViewItem>::reverse_iterator m_iter;
3204     wxDataViewItem item;
3205     int ret;
3206
3207 };
3208
3209 int wxDataViewMainWindow::GetRowByItem(const wxDataViewItem & item) const
3210 {
3211     const wxDataViewModel * model = GetOwner()->GetModel();
3212     if( model == NULL )
3213         return -1;
3214
3215     if (IsVirtualList())
3216     {
3217         return wxPtrToUInt( item.GetID() ) -1;
3218     }
3219     else
3220     {
3221         if( !item.IsOk() )
3222             return -1;
3223
3224         // Compose the parent-chain of the item we are looking for
3225         wxVector<wxDataViewItem> parentChain;
3226         wxDataViewItem it( item );
3227         while( it.IsOk() )
3228         {
3229             parentChain.push_back(it);
3230             it = model->GetParent(it);
3231         }
3232
3233         // add an 'invalid' item to represent our 'invisible' root node
3234         parentChain.push_back(wxDataViewItem());
3235
3236         // the parent chain was created by adding the deepest parent first.
3237         // so if we want to start at the root node, we have to iterate backwards through the vector
3238         ItemToRowJob job( item, parentChain.rbegin() );
3239         Walker( m_root, job );
3240         return job.GetResult();
3241     }
3242 }
3243
3244 static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
3245                              wxDataViewTreeNode * node)
3246 {
3247     if( !model->IsContainer( item ) )
3248         return;
3249
3250     wxDataViewItemArray children;
3251     unsigned int num = model->GetChildren( item, children);
3252
3253     unsigned int index = 0;
3254     while( index < num )
3255     {
3256         if( model->IsContainer( children[index] ) )
3257         {
3258             wxDataViewTreeNode * n = new wxDataViewTreeNode( node );
3259             n->SetItem(children[index]);
3260             n->SetHasChildren( true );
3261             node->AddNode( n );
3262         }
3263         else
3264         {
3265             node->AddLeaf( children[index].GetID() );
3266         }
3267         index ++;
3268     }
3269     node->SetSubTreeCount( num );
3270     wxDataViewTreeNode * n = node->GetParent();
3271     if( n != NULL)
3272         n->ChangeSubTreeCount(num);
3273
3274 }
3275
3276 void wxDataViewMainWindow::BuildTree(wxDataViewModel * model)
3277 {
3278     DestroyTree();
3279
3280     if (GetOwner()->GetModel()->IsVirtualListModel())
3281     {
3282         m_count = -1;
3283         return;
3284     }
3285
3286     m_root = new wxDataViewTreeNode( NULL );
3287     m_root->SetHasChildren(true);
3288
3289     // First we define a invalid item to fetch the top-level elements
3290     wxDataViewItem item;
3291     SortPrepare();
3292     BuildTreeHelper( model, item, m_root);
3293     m_count = -1;
3294 }
3295
3296 static void DestroyTreeHelper( wxDataViewTreeNode * node )
3297 {
3298     if( node->GetNodeNumber() != 0 )
3299     {
3300         int len = node->GetNodeNumber();
3301         wxDataViewTreeNodes& nodes = node->GetNodes();
3302         for (int i = 0; i < len; i++)
3303             DestroyTreeHelper(nodes[i]);
3304     }
3305     delete node;
3306 }
3307
3308 void wxDataViewMainWindow::DestroyTree()
3309 {
3310     if (!IsVirtualList())
3311     {
3312         ::DestroyTreeHelper(m_root);
3313             m_count = 0;
3314             m_root = NULL;
3315     }
3316 }
3317
3318 void wxDataViewMainWindow::OnChar( wxKeyEvent &event )
3319 {
3320     wxWindow * const parent = GetParent();
3321
3322     // propagate the char event upwards
3323     wxKeyEvent eventForParent(event);
3324     eventForParent.SetEventObject(parent);
3325     if ( parent->ProcessWindowEvent(eventForParent) )
3326         return;
3327
3328     if ( parent->HandleAsNavigationKey(event) )
3329         return;
3330
3331     // no item -> nothing to do
3332     if (!HasCurrentRow())
3333     {
3334         event.Skip();
3335         return;
3336     }
3337
3338     // don't use m_linesPerPage directly as it might not be computed yet
3339     const int pageSize = GetCountPerPage();
3340     wxCHECK_RET( pageSize, wxT("should have non zero page size") );
3341
3342     switch ( event.GetKeyCode() )
3343     {
3344         case WXK_RETURN:
3345             {
3346                 wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED,
3347                                    parent->GetId());
3348                 le.SetItem( GetItemByRow(m_currentRow) );
3349                 le.SetEventObject(parent);
3350                 le.SetModel(GetOwner()->GetModel());
3351
3352                 parent->GetEventHandler()->ProcessEvent(le);
3353             }
3354             break;
3355
3356         case WXK_UP:
3357             if ( m_currentRow > 0 )
3358                 OnArrowChar( m_currentRow - 1, event );
3359             break;
3360
3361         case WXK_DOWN:
3362             if ( m_currentRow < GetRowCount() - 1 )
3363                 OnArrowChar( m_currentRow + 1, event );
3364             break;
3365         // Add the process for tree expanding/collapsing
3366         case WXK_LEFT:
3367         {
3368             if (IsList())
3369                break;
3370
3371             wxDataViewTreeNode* node = GetTreeNodeByRow(m_currentRow);
3372             if (!node)
3373                 break;
3374
3375             if (node->HasChildren() && node->IsOpen())
3376             {
3377                 Collapse(m_currentRow);
3378             }
3379             else    // if the node is already closed we move the selection to its parent
3380             {
3381                 wxDataViewTreeNode *parent_node = node->GetParent();
3382
3383                 if(!node->HasChildren())
3384                     delete node;
3385
3386                 if (parent_node)
3387                 {
3388                     int parent = GetRowByItem( parent_node->GetItem() );
3389                     if ( parent >= 0 )
3390                     {
3391                         unsigned int row = m_currentRow;
3392                         SelectRow( row, false);
3393                         SelectRow( parent, true );
3394                         ChangeCurrentRow( parent );
3395                         GetOwner()->EnsureVisible( parent, -1 );
3396                         SendSelectionChangedEvent( parent_node->GetItem() );
3397                     }
3398                 }
3399             }
3400             break;
3401         }
3402         case WXK_RIGHT:
3403         {
3404             if (!IsExpanded( m_currentRow ))
3405                 Expand( m_currentRow );
3406             else
3407             {
3408                 unsigned int row = m_currentRow;
3409                 SelectRow( row, false );
3410                 SelectRow( row + 1, true );
3411                 ChangeCurrentRow( row + 1 );
3412                 GetOwner()->EnsureVisible( row + 1, -1 );
3413                 SendSelectionChangedEvent( GetItemByRow(row+1) );
3414             }
3415             break;
3416         }
3417         case WXK_END:
3418         {
3419             if (!IsEmpty())
3420                 OnArrowChar( GetRowCount() - 1, event );
3421             break;
3422         }
3423         case WXK_HOME:
3424             if (!IsEmpty())
3425                 OnArrowChar( 0, event );
3426             break;
3427
3428         case WXK_PAGEUP:
3429             {
3430                 int steps = pageSize - 1;
3431                 int index = m_currentRow - steps;
3432                 if (index < 0)
3433                     index = 0;
3434
3435                 OnArrowChar( index, event );
3436             }
3437             break;
3438
3439         case WXK_PAGEDOWN:
3440             {
3441                 int steps = pageSize - 1;
3442                 unsigned int index = m_currentRow + steps;
3443                 unsigned int count = GetRowCount();
3444                 if ( index >= count )
3445                     index = count - 1;
3446
3447                 OnArrowChar( index, event );
3448             }
3449             break;
3450
3451         case WXK_F2:
3452             {
3453                 if(m_selection.size() == 1)
3454                 {
3455                     // TODO: we need to revise that when we have a concept for a 'current column'
3456                     GetOwner()->StartEditor(GetItemByRow(m_selection[0]), 0);
3457                 }
3458             }
3459             break;
3460
3461         default:
3462             event.Skip();
3463     }
3464 }
3465
3466 void wxDataViewMainWindow::OnMouse( wxMouseEvent &event )
3467 {
3468     if (event.GetEventType() == wxEVT_MOUSEWHEEL)
3469     {
3470         // let the base handle mouse wheel events.
3471         event.Skip();
3472         return;
3473     }
3474
3475     // set the focus to ourself if any of the mouse buttons are pressed
3476     if(event.ButtonDown() && !HasFocus())
3477         SetFocus();
3478
3479     int x = event.GetX();
3480     int y = event.GetY();
3481     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
3482     wxDataViewColumn *col = NULL;
3483
3484     int xpos = 0;
3485     unsigned int cols = GetOwner()->GetColumnCount();
3486     unsigned int i;
3487     for (i = 0; i < cols; i++)
3488     {
3489         wxDataViewColumn *c = GetOwner()->GetColumnAt( i );
3490         if (c->IsHidden())
3491             continue;      // skip it!
3492
3493         if (x < xpos + c->GetWidth())
3494         {
3495             col = c;
3496             break;
3497         }
3498         xpos += c->GetWidth();
3499     }
3500     if (!col)
3501     {
3502         event.Skip();
3503         return;
3504     }
3505
3506     wxDataViewRenderer *cell = col->GetRenderer();
3507     unsigned int current = GetLineAt( y );
3508     if ((current >= GetRowCount()) || (x > GetEndOfLastCol()))
3509     {
3510         // Unselect all if below the last row ?
3511         event.Skip();
3512         return;
3513     }
3514
3515     // Test whether the mouse is hovered on the tree item button
3516     bool hoverOverExpander = false;
3517     if ((!IsList()) && (GetOwner()->GetExpanderColumn() == col))
3518     {
3519         wxDataViewTreeNode * node = GetTreeNodeByRow(current);
3520         if( node!=NULL && node->HasChildren() )
3521         {
3522             int indent = node->GetIndentLevel();
3523             indent = GetOwner()->GetIndent()*indent;
3524
3525             // we make the rectangle we are looking in a bit bigger than the actual
3526             // visual expander so the user can hit that little thing reliably
3527             wxRect rect( xpos + indent,
3528                         GetLineStart( current ) + (GetLineHeight(current) - m_lineHeight)/2,
3529                         m_lineHeight, m_lineHeight);
3530             if( rect.Contains(x, y) )
3531             {
3532                 // So the mouse is over the expander
3533                 hoverOverExpander = true;
3534                 if (m_underMouse && m_underMouse != node)
3535                 {
3536                     // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
3537                     RefreshRow(GetRowByItem(m_underMouse->GetItem()));
3538                 }
3539                 if (m_underMouse != node)
3540                 {
3541                     // wxLogMessage("Do the row: %d", current);
3542                     RefreshRow(current);
3543                 }
3544                 m_underMouse = node;
3545             }
3546         }
3547         if (node!=NULL && !node->HasChildren())
3548             delete node;
3549     }
3550     if (!hoverOverExpander)
3551     {
3552         if (m_underMouse != NULL)
3553         {
3554             // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
3555             RefreshRow(GetRowByItem(m_underMouse->GetItem()));
3556             m_underMouse = NULL;
3557         }
3558     }
3559
3560     wxDataViewModel *model = GetOwner()->GetModel();
3561
3562 #if wxUSE_DRAG_AND_DROP
3563     if (event.Dragging())
3564     {
3565         if (m_dragCount == 0)
3566         {
3567             // we have to report the raw, physical coords as we want to be
3568             // able to call HitTest(event.m_pointDrag) from the user code to
3569             // get the item being dragged
3570             m_dragStart = event.GetPosition();
3571         }
3572
3573         m_dragCount++;
3574
3575         if (m_dragCount != 3)
3576             return;
3577
3578         if (event.LeftIsDown())
3579         {
3580             m_owner->CalcUnscrolledPosition( m_dragStart.x, m_dragStart.y,
3581                                              &m_dragStart.x, &m_dragStart.y );
3582             unsigned int drag_item_row = GetLineAt( m_dragStart.y );
3583             wxDataViewItem item = GetItemByRow( drag_item_row );
3584
3585             // Notify cell about drag
3586             wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_BEGIN_DRAG, m_owner->GetId() );
3587             event.SetEventObject( m_owner );
3588             event.SetItem( item );
3589             event.SetModel( model );
3590             if (!m_owner->HandleWindowEvent( event ))
3591                 return;
3592
3593             if (!event.IsAllowed())
3594                 return;
3595
3596             wxDataObject *obj = event.GetDataObject();
3597             if (!obj)
3598                 return;
3599
3600             wxDataViewDropSource drag( this, drag_item_row );
3601             drag.SetData( *obj );
3602             /* wxDragResult res = */ drag.DoDragDrop();
3603             delete obj;
3604         }
3605         return;
3606     }
3607     else
3608     {
3609         m_dragCount = 0;
3610     }
3611 #endif // wxUSE_DRAG_AND_DROP
3612
3613     bool simulateClick = false;
3614
3615     if (event.ButtonDClick())
3616     {
3617         m_renameTimer->Stop();
3618         m_lastOnSame = false;
3619     }
3620
3621     wxDataViewItem item = GetItemByRow(current);
3622     bool ignore_other_columns =
3623         ((GetOwner()->GetExpanderColumn() != col) &&
3624         (model->IsContainer(item)) &&
3625         (!model->HasContainerColumns(item)));
3626
3627     if (event.LeftDClick())
3628     {
3629         if(hoverOverExpander)
3630         {
3631             // a double click on the expander will be converted into a "simulated" normal click
3632             simulateClick = true;
3633         }
3634         else if ( current == m_lineLastClicked )
3635         {
3636             if ((!ignore_other_columns) && (cell->GetMode() == wxDATAVIEW_CELL_ACTIVATABLE))
3637             {
3638                 const unsigned colIdx = col->GetModelColumn();
3639
3640                 cell->PrepareForItem(model, item, colIdx);
3641
3642                 wxRect cell_rect( xpos, GetLineStart( current ),
3643                                 col->GetWidth(), GetLineHeight( current ) );
3644                 cell->WXOnActivate( cell_rect, model, item, colIdx );
3645             }
3646             else
3647             {
3648                 wxWindow *parent = GetParent();
3649                 wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED, parent->GetId());
3650                 le.SetItem( item );
3651                 le.SetColumn( col->GetModelColumn() );
3652                 le.SetDataViewColumn( col );
3653                 le.SetEventObject(parent);
3654                 le.SetModel(GetOwner()->GetModel());
3655
3656                 parent->GetEventHandler()->ProcessEvent(le);
3657             }
3658             return;
3659         }
3660         else
3661         {
3662             // The first click was on another item, so don't interpret this as
3663             // a double click, but as a simple click instead
3664             simulateClick = true;
3665         }
3666     }
3667
3668     if (event.LeftUp() && !hoverOverExpander)
3669     {
3670         if (m_lineSelectSingleOnUp != (unsigned int)-1)
3671         {
3672             // select single line
3673             SelectAllRows( false );
3674             SelectRow( m_lineSelectSingleOnUp, true );
3675             SendSelectionChangedEvent( GetItemByRow(m_lineSelectSingleOnUp) );
3676         }
3677
3678         // If the user click the expander, we do not do editing even if the column
3679         // with expander are editable
3680         if (m_lastOnSame && !ignore_other_columns)
3681         {
3682             if ((col == m_currentCol) && (current == m_currentRow) &&
3683                 (cell->GetMode() & wxDATAVIEW_CELL_EDITABLE) )
3684             {
3685                 m_renameTimer->Start( 100, true );
3686             }
3687         }
3688
3689         m_lastOnSame = false;
3690         m_lineSelectSingleOnUp = (unsigned int)-1;
3691     }
3692     else if(!event.LeftUp())
3693     {
3694         // This is necessary, because after a DnD operation in
3695         // from and to ourself, the up event is swallowed by the
3696         // DnD code. So on next non-up event (which means here and
3697         // now) m_lineSelectSingleOnUp should be reset.
3698         m_lineSelectSingleOnUp = (unsigned int)-1;
3699     }
3700
3701     if (event.RightDown())
3702     {
3703         m_lineBeforeLastClicked = m_lineLastClicked;
3704         m_lineLastClicked = current;
3705
3706         // If the item is already selected, do not update the selection.
3707         // Multi-selections should not be cleared if a selected item is clicked.
3708         if (!IsRowSelected(current))
3709         {
3710             SelectAllRows(false);
3711             ChangeCurrentRow(current);
3712             SelectRow(m_currentRow,true);
3713             SendSelectionChangedEvent(GetItemByRow( m_currentRow ) );
3714         }
3715     }
3716     else if (event.RightUp())
3717     {
3718         wxVariant value;
3719         model->GetValue( value, item, col->GetModelColumn() );
3720         wxWindow *parent = GetParent();
3721         wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_CONTEXT_MENU, parent->GetId());
3722         le.SetItem( item );
3723         le.SetColumn( col->GetModelColumn() );
3724         le.SetDataViewColumn( col );
3725         le.SetEventObject(parent);
3726         le.SetModel(GetOwner()->GetModel());
3727         le.SetValue(value);
3728         parent->GetEventHandler()->ProcessEvent(le);
3729     }
3730     else if (event.MiddleDown())
3731     {
3732     }
3733
3734     if((event.LeftDown() || simulateClick) && hoverOverExpander)
3735     {
3736         wxDataViewTreeNode* node = GetTreeNodeByRow(current);
3737
3738         // hoverOverExpander being true tells us that our node must be
3739         // valid and have children.
3740         // So we don't need any extra checks.
3741         if( node->IsOpen() )
3742             Collapse(current);
3743         else
3744             Expand(current);
3745     }
3746     else if ((event.LeftDown() || simulateClick) && !hoverOverExpander)
3747     {
3748         m_lineBeforeLastClicked = m_lineLastClicked;
3749         m_lineLastClicked = current;
3750
3751         unsigned int oldCurrentRow = m_currentRow;
3752         bool oldWasSelected = IsRowSelected(m_currentRow);
3753
3754         bool cmdModifierDown = event.CmdDown();
3755         if ( IsSingleSel() || !(cmdModifierDown || event.ShiftDown()) )
3756         {
3757             if ( IsSingleSel() || !IsRowSelected(current) )
3758             {
3759                 SelectAllRows( false );
3760                 ChangeCurrentRow(current);
3761                 SelectRow(m_currentRow,true);
3762                 SendSelectionChangedEvent(GetItemByRow( m_currentRow ) );
3763             }
3764             else // multi sel & current is highlighted & no mod keys
3765             {
3766                 m_lineSelectSingleOnUp = current;
3767                 ChangeCurrentRow(current); // change focus
3768             }
3769         }
3770         else // multi sel & either ctrl or shift is down
3771         {
3772             if (cmdModifierDown)
3773             {
3774                 ChangeCurrentRow(current);
3775                 ReverseRowSelection(m_currentRow);
3776                 SendSelectionChangedEvent(GetItemByRow(m_currentRow));
3777             }
3778             else if (event.ShiftDown())
3779             {
3780                 ChangeCurrentRow(current);
3781
3782                 unsigned int lineFrom = oldCurrentRow,
3783                     lineTo = current;
3784
3785                 if ( lineTo < lineFrom )
3786                 {
3787                     lineTo = lineFrom;
3788                     lineFrom = m_currentRow;
3789                 }
3790
3791                 SelectRows(lineFrom, lineTo, true);
3792                 SendSelectionChangedEvent(GetItemByRow(m_selection[0]) );
3793             }
3794             else // !ctrl, !shift
3795             {
3796                 // test in the enclosing if should make it impossible
3797                 wxFAIL_MSG( wxT("how did we get here?") );
3798             }
3799         }
3800
3801         if (m_currentRow != oldCurrentRow)
3802             RefreshRow( oldCurrentRow );
3803
3804         wxDataViewColumn *oldCurrentCol = m_currentCol;
3805
3806         // Update selection here...
3807         m_currentCol = col;
3808
3809         m_lastOnSame = !simulateClick && ((col == oldCurrentCol) &&
3810                         (current == oldCurrentRow)) && oldWasSelected;
3811
3812         // Call LeftClick after everything else as under GTK+
3813         if (cell->GetMode() & wxDATAVIEW_CELL_ACTIVATABLE)
3814         {
3815             // notify cell about click
3816             cell->PrepareForItem(model, item, col->GetModelColumn());
3817
3818             wxRect cell_rect( xpos, GetLineStart( current ),
3819                               col->GetWidth(), GetLineHeight( current ) );
3820
3821             // Report position relative to the cell's custom area, i.e.
3822             // no the entire space as given by the control but the one
3823             // used by the renderer after calculation of alignment etc.
3824
3825             // adjust the rectangle ourselves to account for the alignment
3826             wxRect rectItem = cell_rect;
3827             const int align = cell->GetAlignment();
3828             if ( align != wxDVR_DEFAULT_ALIGNMENT )
3829             {
3830                 const wxSize size = cell->GetSize();
3831
3832                 if ( size.x >= 0 && size.x < cell_rect.width )
3833                 {
3834                     if ( align & wxALIGN_CENTER_HORIZONTAL )
3835                         rectItem.x += (cell_rect.width - size.x)/2;
3836                     else if ( align & wxALIGN_RIGHT )
3837                         rectItem.x += cell_rect.width - size.x;
3838                     // else: wxALIGN_LEFT is the default
3839                 }
3840
3841                 if ( size.y >= 0 && size.y < cell_rect.height )
3842                 {
3843                     if ( align & wxALIGN_CENTER_VERTICAL )
3844                         rectItem.y += (cell_rect.height - size.y)/2;
3845                     else if ( align & wxALIGN_BOTTOM )
3846                         rectItem.y += cell_rect.height - size.y;
3847                     // else: wxALIGN_TOP is the default
3848                 }
3849             }
3850
3851             wxPoint pos( event.GetPosition() );
3852             pos.x -= rectItem.x;
3853             pos.y -= rectItem.y;
3854
3855             m_owner->CalcUnscrolledPosition( pos.x, pos.y, &pos.x, &pos.y );
3856
3857              /* ignore ret */ cell->WXOnLeftClick( pos, cell_rect,
3858                               model, item, col->GetModelColumn());
3859         }
3860     }
3861 }
3862
3863 void wxDataViewMainWindow::OnSetFocus( wxFocusEvent &event )
3864 {
3865     m_hasFocus = true;
3866
3867     if (HasCurrentRow())
3868         Refresh();
3869
3870     event.Skip();
3871 }
3872
3873 void wxDataViewMainWindow::OnKillFocus( wxFocusEvent &event )
3874 {
3875     m_hasFocus = false;
3876
3877     if (HasCurrentRow())
3878         Refresh();
3879
3880     event.Skip();
3881 }
3882
3883 wxDataViewItem wxDataViewMainWindow::GetSelection() const
3884 {
3885     if( m_selection.GetCount() != 1 )
3886         return wxDataViewItem();
3887
3888     return GetItemByRow( m_selection.Item(0));
3889 }
3890
3891 //-----------------------------------------------------------------------------
3892 // wxDataViewCtrl
3893 //-----------------------------------------------------------------------------
3894
3895 WX_DEFINE_LIST(wxDataViewColumnList)
3896
3897 IMPLEMENT_DYNAMIC_CLASS(wxDataViewCtrl, wxDataViewCtrlBase)
3898 BEGIN_EVENT_TABLE(wxDataViewCtrl, wxDataViewCtrlBase)
3899     EVT_SIZE(wxDataViewCtrl::OnSize)
3900 END_EVENT_TABLE()
3901
3902 wxDataViewCtrl::~wxDataViewCtrl()
3903 {
3904     if (m_notifier)
3905         GetModel()->RemoveNotifier( m_notifier );
3906
3907     m_cols.Clear();
3908     m_colsBestWidths.clear();
3909 }
3910
3911 void wxDataViewCtrl::Init()
3912 {
3913     m_cols.DeleteContents(true);
3914     m_notifier = NULL;
3915
3916     // No sorting column at start
3917     m_sortingColumnIdx = wxNOT_FOUND;
3918
3919     m_headerArea = NULL;
3920 }
3921
3922 bool wxDataViewCtrl::Create(wxWindow *parent,
3923                             wxWindowID id,
3924                             const wxPoint& pos,
3925                             const wxSize& size,
3926                             long style,
3927                             const wxValidator& validator,
3928                             const wxString& name)
3929 {
3930 //    if ( (style & wxBORDER_MASK) == 0)
3931 //        style |= wxBORDER_SUNKEN;
3932
3933     Init();
3934
3935     if (!wxControl::Create( parent, id, pos, size,
3936                             style | wxScrolledWindowStyle, validator, name))
3937         return false;
3938
3939     SetInitialSize(size);
3940
3941 #ifdef __WXMAC__
3942     MacSetClipChildren( true );
3943 #endif
3944
3945     m_clientArea = new wxDataViewMainWindow( this, wxID_ANY );
3946
3947     // We use the cursor keys for moving the selection, not scrolling, so call
3948     // this method to ensure wxScrollHelperEvtHandler doesn't catch all
3949     // keyboard events forwarded to us from wxListMainWindow.
3950     DisableKeyboardScrolling();
3951
3952     if (HasFlag(wxDV_NO_HEADER))
3953         m_headerArea = NULL;
3954     else
3955         m_headerArea = new wxDataViewHeaderWindow(this);
3956
3957     SetTargetWindow( m_clientArea );
3958
3959     wxBoxSizer *sizer = new wxBoxSizer( wxVERTICAL );
3960     if (m_headerArea)
3961         sizer->Add( m_headerArea, 0, wxGROW );
3962     sizer->Add( m_clientArea, 1, wxGROW );
3963     SetSizer( sizer );
3964
3965     return true;
3966 }
3967
3968 wxBorder wxDataViewCtrl::GetDefaultBorder() const
3969 {
3970     return wxBORDER_THEME;
3971 }
3972
3973 #ifdef __WXMSW__
3974 WXLRESULT wxDataViewCtrl::MSWWindowProc(WXUINT nMsg,
3975                                         WXWPARAM wParam,
3976                                         WXLPARAM lParam)
3977 {
3978     WXLRESULT rc = wxDataViewCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
3979
3980 #ifndef __WXWINCE__
3981     // we need to process arrows ourselves for scrolling
3982     if ( nMsg == WM_GETDLGCODE )
3983     {
3984         rc |= DLGC_WANTARROWS;
3985     }
3986 #endif
3987
3988     return rc;
3989 }
3990 #endif
3991
3992 wxSize wxDataViewCtrl::GetSizeAvailableForScrollTarget(const wxSize& size)
3993 {
3994     wxSize newsize = size;
3995     if (!HasFlag(wxDV_NO_HEADER) && (m_headerArea))
3996     newsize.y -= m_headerArea->GetSize().y;
3997
3998     return newsize;
3999 }
4000
4001 void wxDataViewCtrl::OnSize( wxSizeEvent &WXUNUSED(event) )
4002 {
4003     // We need to override OnSize so that our scrolled
4004     // window a) does call Layout() to use sizers for
4005     // positioning the controls but b) does not query
4006     // the sizer for their size and use that for setting
4007     // the scrollable area as set that ourselves by
4008     // calling SetScrollbar() further down.
4009
4010     Layout();
4011
4012     AdjustScrollbars();
4013 }
4014
4015 void wxDataViewCtrl::SetFocus()
4016 {
4017     if (m_clientArea)
4018         m_clientArea->SetFocus();
4019 }
4020
4021 bool wxDataViewCtrl::AssociateModel( wxDataViewModel *model )
4022 {
4023     if (!wxDataViewCtrlBase::AssociateModel( model ))
4024         return false;
4025
4026     m_notifier = new wxGenericDataViewModelNotifier( m_clientArea );
4027
4028     model->AddNotifier( m_notifier );
4029
4030     m_clientArea->DestroyTree();
4031
4032     m_clientArea->BuildTree(model);
4033
4034     m_clientArea->UpdateDisplay();
4035
4036     return true;
4037 }
4038
4039 #if wxUSE_DRAG_AND_DROP
4040
4041 bool wxDataViewCtrl::EnableDragSource( const wxDataFormat &format )
4042 {
4043     return m_clientArea->EnableDragSource( format );
4044 }
4045
4046 bool wxDataViewCtrl::EnableDropTarget( const wxDataFormat &format )
4047 {
4048     return m_clientArea->EnableDropTarget( format );
4049 }
4050
4051 #endif // wxUSE_DRAG_AND_DROP
4052
4053 bool wxDataViewCtrl::AppendColumn( wxDataViewColumn *col )
4054 {
4055     if (!wxDataViewCtrlBase::AppendColumn(col))
4056         return false;
4057
4058     m_cols.Append( col );
4059     m_colsBestWidths.push_back(0);
4060     OnColumnsCountChanged();
4061     return true;
4062 }
4063
4064 bool wxDataViewCtrl::PrependColumn( wxDataViewColumn *col )
4065 {
4066     if (!wxDataViewCtrlBase::PrependColumn(col))
4067         return false;
4068
4069     m_cols.Insert( col );
4070     m_colsBestWidths.insert(m_colsBestWidths.begin(), 0);
4071     OnColumnsCountChanged();
4072     return true;
4073 }
4074
4075 bool wxDataViewCtrl::InsertColumn( unsigned int pos, wxDataViewColumn *col )
4076 {
4077     if (!wxDataViewCtrlBase::InsertColumn(pos,col))
4078         return false;
4079
4080     m_cols.Insert( pos, col );
4081     m_colsBestWidths.insert(m_colsBestWidths.begin() + pos, 0);
4082     OnColumnsCountChanged();
4083     return true;
4084 }
4085
4086 void wxDataViewCtrl::OnColumnChange(unsigned int idx)
4087 {
4088     if ( m_headerArea )
4089         m_headerArea->UpdateColumn(idx);
4090
4091     m_clientArea->UpdateDisplay();
4092 }
4093
4094 void wxDataViewCtrl::OnColumnsCountChanged()
4095 {
4096     if (m_headerArea)
4097         m_headerArea->SetColumnCount(GetColumnCount());
4098
4099     m_clientArea->UpdateDisplay();
4100 }
4101
4102 void wxDataViewCtrl::DoSetExpanderColumn()
4103 {
4104     m_clientArea->UpdateDisplay();
4105 }
4106
4107 void wxDataViewCtrl::DoSetIndent()
4108 {
4109     m_clientArea->UpdateDisplay();
4110 }
4111
4112 unsigned int wxDataViewCtrl::GetColumnCount() const
4113 {
4114     return m_cols.GetCount();
4115 }
4116
4117 wxDataViewColumn* wxDataViewCtrl::GetColumn( unsigned int idx ) const
4118 {
4119     return m_cols[idx];
4120 }
4121
4122 wxDataViewColumn *wxDataViewCtrl::GetColumnAt(unsigned int pos) const
4123 {
4124     // columns can't be reordered if there is no header window which allows
4125     // to do this
4126     const unsigned idx = m_headerArea ? m_headerArea->GetColumnsOrder()[pos]
4127                                     : pos;
4128
4129     return GetColumn(idx);
4130 }
4131
4132 int wxDataViewCtrl::GetColumnIndex(const wxDataViewColumn *column) const
4133 {
4134     const unsigned count = m_cols.size();
4135     for ( unsigned n = 0; n < count; n++ )
4136     {
4137         if ( m_cols[n] == column )
4138             return n;
4139     }
4140
4141     return wxNOT_FOUND;
4142 }
4143
4144 unsigned int wxDataViewCtrl::GetBestColumnWidth(int idx) const
4145 {
4146     if ( m_colsBestWidths[idx] != 0 )
4147         return m_colsBestWidths[idx];
4148
4149     const int count = m_clientArea->GetRowCount();
4150     wxDataViewColumn *column = GetColumn(idx);
4151     wxDataViewRenderer *renderer =
4152         const_cast<wxDataViewRenderer*>(column->GetRenderer());
4153
4154     class MaxWidthCalculator
4155     {
4156     public:
4157         MaxWidthCalculator(wxDataViewMainWindow *clientArea,
4158                            wxDataViewRenderer *renderer,
4159                            const wxDataViewModel *model,
4160                            unsigned column)
4161             : m_width(0),
4162               m_clientArea(clientArea),
4163               m_renderer(renderer),
4164               m_model(model),
4165               m_column(column)
4166         {
4167         }
4168
4169         void UpdateWithWidth(int width)
4170         {
4171             m_width = wxMax(m_width, width);
4172         }
4173
4174         void UpdateWithRow(int row)
4175         {
4176             wxDataViewItem item = m_clientArea->GetItemByRow(row);
4177             m_renderer->PrepareForItem(m_model, item, m_column);
4178             m_width = wxMax(m_width, m_renderer->GetSize().x);
4179         }
4180
4181         int GetMaxWidth() const { return m_width; }
4182
4183     private:
4184         int m_width;
4185         wxDataViewMainWindow *m_clientArea;
4186         wxDataViewRenderer *m_renderer;
4187         const wxDataViewModel *m_model;
4188         unsigned m_column;
4189     };
4190
4191     MaxWidthCalculator calculator(m_clientArea, renderer,
4192                                   GetModel(), column->GetModelColumn());
4193
4194     if ( m_headerArea )
4195     {
4196         int header_width = m_headerArea->GetTextExtent(column->GetTitle()).x;
4197         // Labels on native MSW header are indented on both sides
4198         header_width +=
4199             wxRendererNative::Get().GetHeaderButtonMargin(m_headerArea);
4200         calculator.UpdateWithWidth(header_width);
4201     }
4202
4203     // The code below deserves some explanation. For very large controls, we
4204     // simply can't afford to calculate sizes for all items, it takes too
4205     // long. So the best we can do is to check the first and the last N/2
4206     // items in the control for some sufficiently large N and calculate best
4207     // sizes from that. That can result in the calculated best width being too
4208     // small for some outliers, but it's better to get slightly imperfect
4209     // result than to wait several seconds after every update. To avoid highly
4210     // visible miscalculations, we also include all currently visible items
4211     // no matter what.  Finally, the value of N is determined dynamically by
4212     // measuring how much time we spent on the determining item widths so far.
4213
4214 #if wxUSE_STOPWATCH
4215     int top_part_end = count;
4216     static const long CALC_TIMEOUT = 20/*ms*/;
4217     // don't call wxStopWatch::Time() too often
4218     static const unsigned CALC_CHECK_FREQ = 100;
4219     wxStopWatch timer;
4220 #else
4221     // use some hard-coded limit, that's the best we can do without timer
4222     int top_part_end = wxMin(500, count);
4223 #endif // wxUSE_STOPWATCH/!wxUSE_STOPWATCH
4224
4225     int row = 0;
4226
4227     for ( row = 0; row < top_part_end; row++ )
4228     {
4229 #if wxUSE_STOPWATCH
4230         if ( row % CALC_CHECK_FREQ == CALC_CHECK_FREQ-1 &&
4231              timer.Time() > CALC_TIMEOUT )
4232             break;
4233 #endif // wxUSE_STOPWATCH
4234         calculator.UpdateWithRow(row);
4235     }
4236
4237     // row is the first unmeasured item now; that's our value of N/2
4238
4239     if ( row < count )
4240     {
4241         top_part_end = row;
4242
4243         // add bottom N/2 items now:
4244         const int bottom_part_start = wxMax(row, count - row);
4245         for ( row = bottom_part_start; row < count; row++ )
4246         {
4247             calculator.UpdateWithRow(row);
4248         }
4249
4250         // finally, include currently visible items in the calculation:
4251         const wxPoint origin = CalcUnscrolledPosition(wxPoint(0, 0));
4252         int first_visible = m_clientArea->GetLineAt(origin.y);
4253         int last_visible = m_clientArea->GetLineAt(origin.y + GetClientSize().y);
4254
4255         first_visible = wxMax(first_visible, top_part_end);
4256         last_visible = wxMin(bottom_part_start, last_visible);
4257
4258         for ( row = first_visible; row < last_visible; row++ )
4259         {
4260             calculator.UpdateWithRow(row);
4261         }
4262
4263         wxLogTrace("dataview",
4264                    "determined best size from %d top, %d bottom plus %d more visible items out of %d total",
4265                    top_part_end,
4266                    count - bottom_part_start,
4267                    wxMax(0, last_visible - first_visible),
4268                    count);
4269     }
4270
4271     int max_width = calculator.GetMaxWidth();
4272     if ( max_width > 0 )
4273         max_width += 2 * PADDING_RIGHTLEFT;
4274
4275     const_cast<wxDataViewCtrl*>(this)->m_colsBestWidths[idx] = max_width;
4276     return max_width;
4277 }
4278
4279 void wxDataViewCtrl::ColumnMoved(wxDataViewColumn * WXUNUSED(col),
4280                                 unsigned int WXUNUSED(new_pos))
4281 {
4282     // do _not_ reorder m_cols elements here, they should always be in the
4283     // order in which columns were added, we only display the columns in
4284     // different order
4285     m_clientArea->UpdateDisplay();
4286 }
4287
4288 bool wxDataViewCtrl::DeleteColumn( wxDataViewColumn *column )
4289 {
4290     wxDataViewColumnList::compatibility_iterator ret = m_cols.Find( column );
4291     if (!ret)
4292         return false;
4293
4294     m_colsBestWidths.erase(m_colsBestWidths.begin() + GetColumnIndex(column));
4295     m_cols.Erase(ret);
4296     OnColumnsCountChanged();
4297
4298     return true;
4299 }
4300
4301 bool wxDataViewCtrl::ClearColumns()
4302 {
4303     m_cols.Clear();
4304     m_colsBestWidths.clear();
4305     OnColumnsCountChanged();
4306     return true;
4307 }
4308
4309 void wxDataViewCtrl::InvalidateColBestWidth(int idx)
4310 {
4311     m_colsBestWidths[idx] = 0;
4312
4313     if ( m_headerArea )
4314         m_headerArea->UpdateColumn(idx);
4315 }
4316
4317 void wxDataViewCtrl::InvalidateColBestWidths()
4318 {
4319     m_colsBestWidths.clear();
4320     m_colsBestWidths.resize(m_cols.size());
4321
4322     if ( m_headerArea )
4323     {
4324         const unsigned cols = m_headerArea->GetColumnCount();
4325         for ( unsigned i = 0; i < cols; i++ )
4326             m_headerArea->UpdateColumn(i);
4327     }
4328 }
4329
4330 int wxDataViewCtrl::GetColumnPosition( const wxDataViewColumn *column ) const
4331 {
4332 #if 1
4333     unsigned int len = GetColumnCount();
4334     for ( unsigned int i = 0; i < len; i++ )
4335     {
4336         wxDataViewColumn * col = GetColumnAt(i);
4337         if (column==col)
4338             return i;
4339     }
4340
4341     return wxNOT_FOUND;
4342 #else
4343     // This returns the position in pixels which is not what we want.
4344     int ret = 0,
4345         dummy = 0;
4346     unsigned int len = GetColumnCount();
4347     for ( unsigned int i = 0; i < len; i++ )
4348     {
4349         wxDataViewColumn * col = GetColumnAt(i);
4350         if (col->IsHidden())
4351             continue;
4352         ret += col->GetWidth();
4353         if (column==col)
4354         {
4355             CalcScrolledPosition( ret, dummy, &ret, &dummy );
4356             break;
4357         }
4358     }
4359     return ret;
4360 #endif
4361 }
4362
4363 wxDataViewColumn *wxDataViewCtrl::GetSortingColumn() const
4364 {
4365     return m_sortingColumnIdx == wxNOT_FOUND ? NULL
4366                                             : GetColumn(m_sortingColumnIdx);
4367 }
4368
4369 wxDataViewItem wxDataViewCtrl::DoGetCurrentItem() const
4370 {
4371     return GetItemByRow(m_clientArea->GetCurrentRow());
4372 }
4373
4374 void wxDataViewCtrl::DoSetCurrentItem(const wxDataViewItem& item)
4375 {
4376     const int row = m_clientArea->GetRowByItem(item);
4377
4378     const unsigned oldCurrent = m_clientArea->GetCurrentRow();
4379     if ( static_cast<unsigned>(row) != oldCurrent )
4380     {
4381         m_clientArea->ChangeCurrentRow(row);
4382         m_clientArea->RefreshRow(oldCurrent);
4383         m_clientArea->RefreshRow(row);
4384     }
4385 }
4386
4387 // Selection code with wxDataViewItem as parameters
4388 wxDataViewItem wxDataViewCtrl::GetSelection() const
4389 {
4390     return m_clientArea->GetSelection();
4391 }
4392
4393 int wxDataViewCtrl::GetSelections( wxDataViewItemArray & sel ) const
4394 {
4395     sel.Empty();
4396     wxDataViewSelection selection = m_clientArea->GetSelections();
4397     int len = selection.GetCount();
4398     for( int i = 0; i < len; i ++)
4399     {
4400         unsigned int row = selection[i];
4401         sel.Add( m_clientArea->GetItemByRow( row ) );
4402     }
4403     return len;
4404 }
4405
4406 void wxDataViewCtrl::SetSelections( const wxDataViewItemArray & sel )
4407 {
4408     wxDataViewSelection selection(wxDataViewSelectionCmp);
4409
4410     wxDataViewItem last_parent;
4411
4412     int len = sel.GetCount();
4413     for( int i = 0; i < len; i ++ )
4414     {
4415         wxDataViewItem item = sel[i];
4416         wxDataViewItem parent = GetModel()->GetParent( item );
4417         if (parent)
4418         {
4419             if (parent != last_parent)
4420                 ExpandAncestors(item);
4421         }
4422
4423         last_parent = parent;
4424         int row = m_clientArea->GetRowByItem( item );
4425         if( row >= 0 )
4426             selection.Add( static_cast<unsigned int>(row) );
4427     }
4428
4429     m_clientArea->SetSelections( selection );
4430 }
4431
4432 void wxDataViewCtrl::Select( const wxDataViewItem & item )
4433 {
4434     ExpandAncestors( item );
4435
4436     int row = m_clientArea->GetRowByItem( item );
4437     if( row >= 0 )
4438     {
4439         // Unselect all rows before select another in the single select mode
4440         if (m_clientArea->IsSingleSel())
4441             m_clientArea->SelectAllRows(false);
4442
4443         m_clientArea->SelectRow(row, true);
4444
4445         // Also set focus to the selected item
4446         m_clientArea->ChangeCurrentRow( row );
4447     }
4448 }
4449
4450 void wxDataViewCtrl::Unselect( const wxDataViewItem & item )
4451 {
4452     int row = m_clientArea->GetRowByItem( item );
4453     if( row >= 0 )
4454         m_clientArea->SelectRow(row, false);
4455 }
4456
4457 bool wxDataViewCtrl::IsSelected( const wxDataViewItem & item ) const
4458 {
4459     int row = m_clientArea->GetRowByItem( item );
4460     if( row >= 0 )
4461     {
4462         return m_clientArea->IsRowSelected(row);
4463     }
4464     return false;
4465 }
4466
4467 // Selection code with row number as parameter
4468 int wxDataViewCtrl::GetSelections( wxArrayInt & sel ) const
4469 {
4470     sel.Empty();
4471     wxDataViewSelection selection = m_clientArea->GetSelections();
4472     int len = selection.GetCount();
4473     for( int i = 0; i < len; i ++)
4474     {
4475         unsigned int row = selection[i];
4476         sel.Add( row );
4477     }
4478     return len;
4479 }
4480
4481 void wxDataViewCtrl::SetSelections( const wxArrayInt & sel )
4482 {
4483     wxDataViewSelection selection(wxDataViewSelectionCmp);
4484     int len = sel.GetCount();
4485     for( int i = 0; i < len; i ++ )
4486     {
4487         int row = sel[i];
4488         if( row >= 0 )
4489             selection.Add( static_cast<unsigned int>(row) );
4490     }
4491     m_clientArea->SetSelections( selection );
4492 }
4493
4494 void wxDataViewCtrl::Select( int row )
4495 {
4496     if( row >= 0 )
4497     {
4498         if (m_clientArea->IsSingleSel())
4499             m_clientArea->SelectAllRows(false);
4500         m_clientArea->SelectRow( row, true );
4501     }
4502 }
4503
4504 void wxDataViewCtrl::Unselect( int row )
4505 {
4506     if( row >= 0 )
4507         m_clientArea->SelectRow(row, false);
4508 }
4509
4510 bool wxDataViewCtrl::IsSelected( int row ) const
4511 {
4512     if( row >= 0 )
4513         return m_clientArea->IsRowSelected(row);
4514     return false;
4515 }
4516
4517 void wxDataViewCtrl::SelectRange( int from, int to )
4518 {
4519     wxArrayInt sel;
4520     for( int i = from; i < to; i ++ )
4521         sel.Add( i );
4522     m_clientArea->Select(sel);
4523 }
4524
4525 void wxDataViewCtrl::UnselectRange( int from, int to )
4526 {
4527     wxDataViewSelection sel = m_clientArea->GetSelections();
4528     for( int i = from; i < to; i ++ )
4529         if( sel.Index( i ) != wxNOT_FOUND )
4530             sel.Remove( i );
4531     m_clientArea->SetSelections(sel);
4532 }
4533
4534 void wxDataViewCtrl::SelectAll()
4535 {
4536     m_clientArea->SelectAllRows(true);
4537 }
4538
4539 void wxDataViewCtrl::UnselectAll()
4540 {
4541     m_clientArea->SelectAllRows(false);
4542 }
4543
4544 void wxDataViewCtrl::EnsureVisible( int row, int column )
4545 {
4546     if( row < 0 )
4547         row = 0;
4548     if( row > (int) m_clientArea->GetRowCount() )
4549         row = m_clientArea->GetRowCount();
4550
4551     int first = m_clientArea->GetFirstVisibleRow();
4552     int last = m_clientArea->GetLastVisibleRow();
4553     if( row < first )
4554         m_clientArea->ScrollTo( row, column );
4555     else if( row > last )
4556         m_clientArea->ScrollTo( row - last + first, column );
4557     else
4558         m_clientArea->ScrollTo( first, column );
4559 }
4560
4561 void wxDataViewCtrl::EnsureVisible( const wxDataViewItem & item, const wxDataViewColumn * column )
4562 {
4563     ExpandAncestors( item );
4564
4565     m_clientArea->RecalculateDisplay();
4566
4567     int row = m_clientArea->GetRowByItem(item);
4568     if( row >= 0 )
4569     {
4570         if( column == NULL )
4571             EnsureVisible(row, -1);
4572         else
4573             EnsureVisible( row, GetColumnIndex(column) );
4574     }
4575
4576 }
4577
4578 void wxDataViewCtrl::HitTest( const wxPoint & point, wxDataViewItem & item,
4579                               wxDataViewColumn* &column ) const
4580 {
4581     m_clientArea->HitTest(point, item, column);
4582 }
4583
4584 wxRect wxDataViewCtrl::GetItemRect( const wxDataViewItem & item,
4585                                     const wxDataViewColumn* column ) const
4586 {
4587     return m_clientArea->GetItemRect(item, column);
4588 }
4589
4590 wxDataViewItem wxDataViewCtrl::GetItemByRow( unsigned int row ) const
4591 {
4592     return m_clientArea->GetItemByRow( row );
4593 }
4594
4595 int wxDataViewCtrl::GetRowByItem( const wxDataViewItem & item ) const
4596 {
4597     return m_clientArea->GetRowByItem( item );
4598 }
4599
4600 void wxDataViewCtrl::Expand( const wxDataViewItem & item )
4601 {
4602     ExpandAncestors( item );
4603
4604     int row = m_clientArea->GetRowByItem( item );
4605     if (row != -1)
4606         m_clientArea->Expand(row);
4607 }
4608
4609 void wxDataViewCtrl::Collapse( const wxDataViewItem & item )
4610 {
4611     int row = m_clientArea->GetRowByItem( item );
4612     if (row != -1)
4613         m_clientArea->Collapse(row);
4614 }
4615
4616 bool wxDataViewCtrl::IsExpanded( const wxDataViewItem & item ) const
4617 {
4618     int row = m_clientArea->GetRowByItem( item );
4619     if (row != -1)
4620         return m_clientArea->IsExpanded(row);
4621     return false;
4622 }
4623
4624 void wxDataViewCtrl::StartEditor( const wxDataViewItem & item, unsigned int column )
4625 {
4626     wxDataViewColumn* col = GetColumn( column );
4627     if (!col)
4628         return;
4629
4630     wxRect itemRect = GetItemRect(item, col);
4631     wxDataViewRenderer* renderer = col->GetRenderer();
4632     if (renderer->GetMode() == wxDATAVIEW_CELL_EDITABLE)
4633         renderer->StartEditing(item, itemRect);
4634 }
4635
4636 #endif // !wxUSE_GENERICDATAVIEWCTRL
4637
4638 #endif // wxUSE_DATAVIEWCTRL