src/generic/datavgen.cpp

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