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