src/generic/datavgen.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/datavgen.cpp
   3 // Purpose:     wxDataViewCtrl generic implementation
   4 // Author:      Robert Roebling
   5 // Modified by: Francesco Montorsi, Guru Kathiresan, Bo Yang
   6 // Id:          $Id$
   7 // Copyright:   (c) 1998 Robert Roebling
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // For compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 #if wxUSE_DATAVIEWCTRL
  19
  20 #include "wx/dataview.h"
  21
  22 #ifdef wxUSE_GENERICDATAVIEWCTRL
  23
  24 #ifndef WX_PRECOMP
  25     #ifdef __WXMSW__
  26         #include "wx/msw/private.h"
  27         #include "wx/msw/wrapwin.h"
  28         #include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
  29     #endif
  30     #include "wx/sizer.h"
  31     #include "wx/log.h"
  32     #include "wx/dcclient.h"
  33     #include "wx/timer.h"
  34     #include "wx/settings.h"
  35     #include "wx/msgdlg.h"
  36     #include "wx/dcscreen.h"
  37     #include "wx/frame.h"
  38 #endif
  39
  40 #include "wx/stockitem.h"
  41 #include "wx/calctrl.h"
  42 #include "wx/popupwin.h"
  43 #include "wx/renderer.h"
  44 #include "wx/dcbuffer.h"
  45 #include "wx/icon.h"
  46 #include "wx/list.h"
  47 #include "wx/listimpl.cpp"
  48 #include "wx/imaglist.h"
  49 #include "wx/headerctrl.h"
  50 #include "wx/dnd.h"
  51 #include "wx/stopwatch.h"
  52
  53 //-----------------------------------------------------------------------------
  54 // classes
  55 //-----------------------------------------------------------------------------
  56
  57 class wxDataViewColumn;
  58 class wxDataViewHeaderWindow;
  59 class wxDataViewCtrl;
  60
  61 //-----------------------------------------------------------------------------
  62 // classes
  63 //-----------------------------------------------------------------------------
  64
  65 static const int SCROLL_UNIT_X = 15;
  66
  67 // the cell padding on the left/right
  68 static const int PADDING_RIGHTLEFT = 3;
  69
  70 // the expander space margin
  71 static const int EXPANDER_MARGIN = 4;
  72
  73 #ifdef __WXMSW__
  74 static const int EXPANDER_OFFSET = 4;
  75 #else
  76 static const int EXPANDER_OFFSET = 1;
  77 #endif
  78
  79 // Below is the compare stuff.
  80 // For the generic implementation, both the leaf nodes and the nodes are sorted for
  81 // fast search when needed
  82 static wxDataViewModel* g_model;
  83 static int g_column = -2;
  84 static bool g_asending = true;
  85
  86 //-----------------------------------------------------------------------------
  87 // wxDataViewColumn
  88 //-----------------------------------------------------------------------------
  89
  90 void wxDataViewColumn::Init(int width, wxAlignment align, int flags)
  91 {
  92     m_width = width;
  93     m_minWidth = 0;
  94     m_align = align;
  95     m_flags = flags;
  96     m_sort = false;
  97     m_sortAscending = true;
  98 }
  99
 100 int wxDataViewColumn::GetWidth() const
 101 {
 102     switch ( m_width )
 103     {
 104         case wxCOL_WIDTH_DEFAULT:
 105             return wxDVC_DEFAULT_WIDTH;
 106
 107         case wxCOL_WIDTH_AUTOSIZE:
 108             wxCHECK_MSG( m_owner, wxDVC_DEFAULT_WIDTH, "no owner control" );
 109             return m_owner->GetBestColumnWidth(m_owner->GetColumnIndex(this));
 110
 111         default:
 112             return m_width;
 113     }
 114 }
 115
 116 void wxDataViewColumn::UpdateDisplay()
 117 {
 118     if (m_owner)
 119     {
 120         int idx = m_owner->GetColumnIndex( this );
 121         m_owner->OnColumnChange( idx );
 122     }
 123 }
 124
 125 //-----------------------------------------------------------------------------
 126 // wxDataViewHeaderWindow
 127 //-----------------------------------------------------------------------------
 128
 129 class wxDataViewHeaderWindow : public wxHeaderCtrl
 130 {
 131 public:
 132     wxDataViewHeaderWindow(wxDataViewCtrl *parent)
 133         : wxHeaderCtrl(parent)
 134     {
 135     }
 136
 137     wxDataViewCtrl *GetOwner() const
 138         { return static_cast<wxDataViewCtrl *>(GetParent()); }
 139
 140 protected:
 141     // implement/override wxHeaderCtrl functions by forwarding them to the main
 142     // control
 143     virtual const wxHeaderColumn& GetColumn(unsigned int idx) const
 144     {
 145         return *(GetOwner()->GetColumn(idx));
 146     }
 147
 148     virtual bool UpdateColumnWidthToFit(unsigned int idx, int widthTitle)
 149     {
 150         wxDataViewCtrl * const owner = GetOwner();
 151
 152         int widthContents = owner->GetBestColumnWidth(idx);
 153         owner->GetColumn(idx)->SetWidth(wxMax(widthTitle, widthContents));
 154         owner->OnColumnChange(idx);
 155
 156         return true;
 157     }
 158
 159 private:
 160     bool SendEvent(wxEventType type, unsigned int n)
 161     {
 162         wxDataViewCtrl * const owner = GetOwner();
 163         wxDataViewEvent event(type, owner->GetId());
 164
 165         event.SetEventObject(owner);
 166         event.SetColumn(n);
 167         event.SetDataViewColumn(owner->GetColumn(n));
 168         event.SetModel(owner->GetModel());
 169
 170         // for events created by wxDataViewHeaderWindow the
 171         // row / value fields are not valid
 172         return owner->GetEventHandler()->ProcessEvent(event);
 173     }
 174
 175     void OnClick(wxHeaderCtrlEvent& event)
 176     {
 177         const unsigned idx = event.GetColumn();
 178
 179         if ( SendEvent(wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_CLICK, idx) )
 180             return;
 181
 182         // default handling for the column click is to sort by this column or
 183         // toggle its sort order
 184         wxDataViewCtrl * const owner = GetOwner();
 185         wxDataViewColumn * const col = owner->GetColumn(idx);
 186         if ( !col->IsSortable() )
 187         {
 188             // no default handling for non-sortable columns
 189             event.Skip();
 190             return;
 191         }
 192
 193         if ( col->IsSortKey() )
 194         {
 195             // already using this column for sorting, just change the order
 196             col->ToggleSortOrder();
 197         }
 198         else // not using this column for sorting yet
 199         {
 200             // first unset the old sort column if any
 201             int oldSortKey = owner->GetSortingColumnIndex();
 202             if ( oldSortKey != wxNOT_FOUND )
 203             {
 204                 owner->GetColumn(oldSortKey)->UnsetAsSortKey();
 205                 owner->OnColumnChange(oldSortKey);
 206             }
 207
 208             owner->SetSortingColumnIndex(idx);
 209             col->SetAsSortKey();
 210         }
 211
 212         wxDataViewModel * const model = owner->GetModel();
 213         if ( model )
 214             model->Resort();
 215
 216         owner->OnColumnChange(idx);
 217
 218         SendEvent(wxEVT_COMMAND_DATAVIEW_COLUMN_SORTED, idx);
 219     }
 220
 221     void OnRClick(wxHeaderCtrlEvent& event)
 222     {
 223         if ( !SendEvent(wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_RIGHT_CLICK,
 224                         event.GetColumn()) )
 225             event.Skip();
 226     }
 227
 228     void OnResize(wxHeaderCtrlEvent& event)
 229     {
 230         wxDataViewCtrl * const owner = GetOwner();
 231
 232         const unsigned col = event.GetColumn();
 233         owner->GetColumn(col)->SetWidth(event.GetWidth());
 234         GetOwner()->OnColumnChange(col);
 235     }
 236
 237     void OnEndReorder(wxHeaderCtrlEvent& event)
 238     {
 239         wxDataViewCtrl * const owner = GetOwner();
 240         owner->ColumnMoved(owner->GetColumn(event.GetColumn()),
 241                         event.GetNewOrder());
 242     }
 243
 244     DECLARE_EVENT_TABLE()
 245     wxDECLARE_NO_COPY_CLASS(wxDataViewHeaderWindow);
 246 };
 247
 248 BEGIN_EVENT_TABLE(wxDataViewHeaderWindow, wxHeaderCtrl)
 249     EVT_HEADER_CLICK(wxID_ANY, wxDataViewHeaderWindow::OnClick)
 250     EVT_HEADER_RIGHT_CLICK(wxID_ANY, wxDataViewHeaderWindow::OnRClick)
 251
 252     EVT_HEADER_RESIZING(wxID_ANY, wxDataViewHeaderWindow::OnResize)
 253     EVT_HEADER_END_RESIZE(wxID_ANY, wxDataViewHeaderWindow::OnResize)
 254
 255     EVT_HEADER_END_REORDER(wxID_ANY, wxDataViewHeaderWindow::OnEndReorder)
 256 END_EVENT_TABLE()
 257
 258 //-----------------------------------------------------------------------------
 259 // wxDataViewRenameTimer
 260 //-----------------------------------------------------------------------------
 261
 262 class wxDataViewRenameTimer: public wxTimer
 263 {
 264 private:
 265     wxDataViewMainWindow *m_owner;
 266
 267 public:
 268     wxDataViewRenameTimer( wxDataViewMainWindow *owner );
 269     void Notify();
 270 };
 271
 272 //-----------------------------------------------------------------------------
 273 // wxDataViewTreeNode
 274 //-----------------------------------------------------------------------------
 275
 276 class wxDataViewTreeNode;
 277 WX_DEFINE_ARRAY( wxDataViewTreeNode *, wxDataViewTreeNodes );
 278 WX_DEFINE_ARRAY( void* , wxDataViewTreeLeaves);
 279
 280 int LINKAGEMODE wxGenericTreeModelNodeCmp( wxDataViewTreeNode ** node1,
 281                                            wxDataViewTreeNode ** node2);
 282 int LINKAGEMODE wxGenericTreeModelItemCmp( void ** id1, void ** id2);
 283
 284 class wxDataViewTreeNode
 285 {
 286 public:
 287     wxDataViewTreeNode( wxDataViewTreeNode * parent = NULL )
 288     {
 289         m_parent = parent;
 290         if (!parent)
 291             m_open = true;
 292         else
 293             m_open = false;
 294         m_hasChildren = false;
 295         m_subTreeCount  = 0;
 296     }
 297
 298     ~wxDataViewTreeNode()
 299     {
 300     }
 301
 302     wxDataViewTreeNode * GetParent() const { return m_parent; }
 303     void SetParent( wxDataViewTreeNode * parent ) { m_parent = parent; }
 304     wxDataViewTreeNodes &  GetNodes() { return m_nodes; }
 305     wxDataViewTreeLeaves & GetChildren() { return m_leaves; }
 306
 307     void AddNode( wxDataViewTreeNode * node )
 308     {
 309         m_leaves.Add( node->GetItem().GetID() );
 310         if (g_column >= -1)
 311             m_leaves.Sort( &wxGenericTreeModelItemCmp );
 312         m_nodes.Add( node );
 313         if (g_column >= -1)
 314             m_nodes.Sort( &wxGenericTreeModelNodeCmp );
 315     }
 316     void AddLeaf( void * leaf )
 317     {
 318         m_leaves.Add( leaf );
 319         if (g_column >= -1)
 320             m_leaves.Sort( &wxGenericTreeModelItemCmp );
 321     }
 322
 323     wxDataViewItem & GetItem() { return m_item; }
 324     const wxDataViewItem & GetItem() const { return m_item; }
 325     void SetItem( const wxDataViewItem & item ) { m_item = item; }
 326
 327     unsigned int GetChildrenNumber() const { return m_leaves.GetCount(); }
 328     unsigned int GetNodeNumber() const { return m_nodes.GetCount(); }
 329     int GetIndentLevel() const
 330     {
 331         int ret = 0;
 332         const wxDataViewTreeNode * node = this;
 333         while( node->GetParent()->GetParent() != NULL )
 334         {
 335             node = node->GetParent();
 336             ret ++;
 337         }
 338         return ret;
 339     }
 340
 341     bool IsOpen() const
 342     {
 343         return m_open;
 344     }
 345
 346     void ToggleOpen()
 347     {
 348         int len = m_nodes.GetCount();
 349         int sum = 0;
 350         for ( int i = 0;i < len; i ++)
 351             sum += m_nodes[i]->GetSubTreeCount();
 352
 353         sum += m_leaves.GetCount();
 354         if (m_open)
 355         {
 356             ChangeSubTreeCount(-sum);
 357             m_open = !m_open;
 358         }
 359         else
 360         {
 361             m_open = !m_open;
 362             ChangeSubTreeCount(sum);
 363         }
 364     }
 365     bool HasChildren() const { return m_hasChildren; }
 366     void SetHasChildren( bool has ){ m_hasChildren = has; }
 367
 368     void SetSubTreeCount( int num ) { m_subTreeCount = num; }
 369     int GetSubTreeCount() const { return m_subTreeCount; }
 370     void ChangeSubTreeCount( int num )
 371     {
 372         if( !m_open )
 373             return;
 374         m_subTreeCount += num;
 375         if( m_parent )
 376             m_parent->ChangeSubTreeCount(num);
 377     }
 378
 379     void Resort()
 380     {
 381         if (g_column >= -1)
 382         {
 383             m_nodes.Sort( &wxGenericTreeModelNodeCmp );
 384             int len = m_nodes.GetCount();
 385             for (int i = 0; i < len; i ++)
 386                 m_nodes[i]->Resort();
 387             m_leaves.Sort( &wxGenericTreeModelItemCmp );
 388         }
 389     }
 390
 391     // returns node corresponding to 'item' if its in m_nodes or NULL otherwise
 392     wxDataViewTreeNode *FindItemAsNode(const wxDataViewItem& item) const
 393     {
 394         for ( wxDataViewTreeNodes::const_iterator i = m_nodes.begin();
 395               i != m_nodes.end();
 396               ++i )
 397         {
 398             if( (*i)->GetItem() == item )
 399                 return *i;
 400         }
 401
 402         return NULL;
 403     }
 404
 405
 406 private:
 407     wxDataViewTreeNode  *m_parent;
 408     wxDataViewTreeNodes  m_nodes;
 409     wxDataViewTreeLeaves m_leaves;
 410     wxDataViewItem       m_item;
 411     bool                 m_open;
 412     bool                 m_hasChildren;
 413     int                  m_subTreeCount;
 414 };
 415
 416 int LINKAGEMODE wxGenericTreeModelNodeCmp( wxDataViewTreeNode ** node1,
 417                                            wxDataViewTreeNode ** node2)
 418 {
 419     return g_model->Compare( (*node1)->GetItem(), (*node2)->GetItem(), g_column, g_asending );
 420 }
 421
 422 int LINKAGEMODE wxGenericTreeModelItemCmp( void ** id1, void ** id2)
 423 {
 424     return g_model->Compare( wxDataViewItem(*id1), wxDataViewItem(*id2), g_column, g_asending );
 425 }
 426
 427
 428 //-----------------------------------------------------------------------------
 429 // wxDataViewMainWindow
 430 //-----------------------------------------------------------------------------
 431
 432 WX_DEFINE_SORTED_ARRAY_SIZE_T(unsigned int, wxDataViewSelection);
 433
 434 class wxDataViewMainWindow: public wxWindow
 435 {
 436 public:
 437     wxDataViewMainWindow( wxDataViewCtrl *parent,
 438                             wxWindowID id,
 439                             const wxPoint &pos = wxDefaultPosition,
 440                             const wxSize &size = wxDefaultSize,
 441                             const wxString &name = wxT("wxdataviewctrlmainwindow") );
 442     virtual ~wxDataViewMainWindow();
 443
 444     bool IsList() const { return GetOwner()->GetModel()->IsListModel(); }
 445     bool IsVirtualList() const { return m_root == NULL; }
 446
 447     // notifications from wxDataViewModel
 448     bool ItemAdded( const wxDataViewItem &parent, const wxDataViewItem &item );
 449     bool ItemDeleted( const wxDataViewItem &parent, const wxDataViewItem &item );
 450     bool ItemChanged( const wxDataViewItem &item );
 451     bool ValueChanged( const wxDataViewItem &item, unsigned int model_column );
 452     bool Cleared();
 453     void Resort()
 454     {
 455         if (!IsVirtualList())
 456         {
 457             SortPrepare();
 458             m_root->Resort();
 459         }
 460         UpdateDisplay();
 461     }
 462
 463     void SortPrepare()
 464     {
 465         g_model = GetOwner()->GetModel();
 466         wxDataViewColumn* col = GetOwner()->GetSortingColumn();
 467         if( !col )
 468         {
 469             if (g_model->HasDefaultCompare())
 470                 g_column = -1;
 471             else
 472                 g_column = -2;
 473
 474             g_asending = true;
 475             return;
 476         }
 477         g_column = col->GetModelColumn();
 478         g_asending = col->IsSortOrderAscending();
 479     }
 480
 481     void SetOwner( wxDataViewCtrl* owner ) { m_owner = owner; }
 482     wxDataViewCtrl *GetOwner() { return m_owner; }
 483     const wxDataViewCtrl *GetOwner() const { return m_owner; }
 484
 485 #if wxUSE_DRAG_AND_DROP
 486     wxBitmap CreateItemBitmap( unsigned int row, int &indent );
 487 #endif // wxUSE_DRAG_AND_DROP
 488     void OnPaint( wxPaintEvent &event );
 489     void OnArrowChar(unsigned int newCurrent, const wxKeyEvent& event);
 490     void OnChar( wxKeyEvent &event );
 491     void OnMouse( wxMouseEvent &event );
 492     void OnSetFocus( wxFocusEvent &event );
 493     void OnKillFocus( wxFocusEvent &event );
 494
 495     void UpdateDisplay();
 496     void RecalculateDisplay();
 497     void OnInternalIdle();
 498
 499     void OnRenameTimer();
 500
 501     void ScrollWindow( int dx, int dy, const wxRect *rect = NULL );
 502     void ScrollTo( int rows, int column );
 503
 504     unsigned GetCurrentRow() const { return m_currentRow; }
 505     bool HasCurrentRow() { return m_currentRow != (unsigned int)-1; }
 506     void ChangeCurrentRow( unsigned int row );
 507
 508     bool IsSingleSel() const { return !GetParent()->HasFlag(wxDV_MULTIPLE); }
 509     bool IsEmpty() { return GetRowCount() == 0; }
 510
 511     int GetCountPerPage() const;
 512     int GetEndOfLastCol() const;
 513     unsigned int GetFirstVisibleRow() const;
 514
 515     // I change this method to un const because in the tree view,
 516     // the displaying number of the tree are changing along with the
 517     // expanding/collapsing of the tree nodes
 518     unsigned int GetLastVisibleRow();
 519     unsigned int GetRowCount();
 520
 521     const wxDataViewSelection& GetSelections() const { return m_selection; }
 522     void SetSelections( const wxDataViewSelection & sel )
 523         { m_selection = sel; UpdateDisplay(); }
 524     void Select( const wxArrayInt& aSelections );
 525     void SelectAllRows( bool on );
 526     void SelectRow( unsigned int row, bool on );
 527     void SelectRows( unsigned int from, unsigned int to, bool on );
 528     void ReverseRowSelection( unsigned int row );
 529     bool IsRowSelected( unsigned int row );
 530     void SendSelectionChangedEvent( const wxDataViewItem& item);
 531
 532     void RefreshRow( unsigned int row );
 533     void RefreshRows( unsigned int from, unsigned int to );
 534     void RefreshRowsAfter( unsigned int firstRow );
 535
 536     // returns the colour to be used for drawing the rules
 537     wxColour GetRuleColour() const
 538     {
 539         return wxSystemSettings::GetColour(wxSYS_COLOUR_3DLIGHT);
 540     }
 541
 542     wxRect GetLineRect( unsigned int row ) const;
 543
 544     int GetLineStart( unsigned int row ) const;  // row * m_lineHeight in fixed mode
 545     int GetLineHeight( unsigned int row ) const; // m_lineHeight in fixed mode
 546     int GetLineAt( unsigned int y ) const;       // y / m_lineHeight in fixed mode
 547
 548     void SetRowHeight( int lineHeight ) { m_lineHeight = lineHeight; }
 549
 550     // Some useful functions for row and item mapping
 551     wxDataViewItem GetItemByRow( unsigned int row ) const;
 552     int GetRowByItem( const wxDataViewItem & item ) const;
 553
 554     // Methods for building the mapping tree
 555     void BuildTree( wxDataViewModel  * model );
 556     void DestroyTree();
 557     void HitTest( const wxPoint & point, wxDataViewItem & item, wxDataViewColumn* &column );
 558     wxRect GetItemRect( const wxDataViewItem & item, const wxDataViewColumn* column );
 559
 560     void Expand( unsigned int row );
 561     void Collapse( unsigned int row );
 562     bool IsExpanded( unsigned int row ) const;
 563     bool HasChildren( unsigned int row ) const;
 564
 565 #if wxUSE_DRAG_AND_DROP
 566     bool EnableDragSource( const wxDataFormat &format );
 567     bool EnableDropTarget( const wxDataFormat &format );
 568
 569     void RemoveDropHint();
 570     wxDragResult OnDragOver( wxDataFormat format, wxCoord x, wxCoord y, wxDragResult def );
 571     bool OnDrop( wxDataFormat format, wxCoord x, wxCoord y );
 572     wxDragResult OnData( wxDataFormat format, wxCoord x, wxCoord y, wxDragResult def );
 573     void OnLeave();
 574 #endif // wxUSE_DRAG_AND_DROP
 575
 576 private:
 577     wxDataViewTreeNode * GetTreeNodeByRow( unsigned int row ) const;
 578     // We did not need this temporarily
 579     // wxDataViewTreeNode * GetTreeNodeByItem( const wxDataViewItem & item );
 580
 581     int RecalculateCount();
 582
 583     wxDataViewEvent SendExpanderEvent( wxEventType type, const wxDataViewItem & item );
 584
 585     wxDataViewTreeNode * FindNode( const wxDataViewItem & item );
 586
 587 private:
 588     wxDataViewCtrl             *m_owner;
 589     int                         m_lineHeight;
 590     bool                        m_dirty;
 591
 592     wxDataViewColumn           *m_currentCol;
 593     unsigned int                m_currentRow;
 594     wxDataViewSelection         m_selection;
 595
 596     wxDataViewRenameTimer      *m_renameTimer;
 597     bool                        m_lastOnSame;
 598
 599     bool                        m_hasFocus;
 600
 601 #if wxUSE_DRAG_AND_DROP
 602     int                         m_dragCount;
 603     wxPoint                     m_dragStart;
 604
 605     bool                        m_dragEnabled;
 606     wxDataFormat                m_dragFormat;
 607
 608     bool                        m_dropEnabled;
 609     wxDataFormat                m_dropFormat;
 610     bool                        m_dropHint;
 611     unsigned int                m_dropHintLine;
 612 #endif // wxUSE_DRAG_AND_DROP
 613
 614     // for double click logic
 615     unsigned int m_lineLastClicked,
 616         m_lineBeforeLastClicked,
 617         m_lineSelectSingleOnUp;
 618
 619     // the pen used to draw horiz/vertical rules
 620     wxPen m_penRule;
 621
 622     // the pen used to draw the expander and the lines
 623     wxPen m_penExpander;
 624
 625     // This is the tree structure of the model
 626     wxDataViewTreeNode * m_root;
 627     int m_count;
 628
 629     // This is the tree node under the cursor
 630     wxDataViewTreeNode * m_underMouse;
 631
 632 private:
 633     DECLARE_DYNAMIC_CLASS(wxDataViewMainWindow)
 634     DECLARE_EVENT_TABLE()
 635 };
 636
 637 // ---------------------------------------------------------
 638 // wxGenericDataViewModelNotifier
 639 // ---------------------------------------------------------
 640
 641 class wxGenericDataViewModelNotifier: public wxDataViewModelNotifier
 642 {
 643 public:
 644     wxGenericDataViewModelNotifier( wxDataViewMainWindow *mainWindow )
 645         { m_mainWindow = mainWindow; }
 646
 647     virtual bool ItemAdded( const wxDataViewItem & parent, const wxDataViewItem & item )
 648         { return m_mainWindow->ItemAdded( parent , item ); }
 649     virtual bool ItemDeleted( const wxDataViewItem &parent, const wxDataViewItem &item )
 650         { return m_mainWindow->ItemDeleted( parent, item ); }
 651     virtual bool ItemChanged( const wxDataViewItem & item )
 652         { return m_mainWindow->ItemChanged(item);  }
 653     virtual bool ValueChanged( const wxDataViewItem & item , unsigned int col )
 654         { return m_mainWindow->ValueChanged( item, col ); }
 655     virtual bool Cleared()
 656         { return m_mainWindow->Cleared(); }
 657     virtual void Resort()
 658         { m_mainWindow->Resort(); }
 659
 660     wxDataViewMainWindow    *m_mainWindow;
 661 };
 662
 663 // ---------------------------------------------------------
 664 // wxDataViewRenderer
 665 // ---------------------------------------------------------
 666
 667 IMPLEMENT_ABSTRACT_CLASS(wxDataViewRenderer, wxDataViewRendererBase)
 668
 669 wxDataViewRenderer::wxDataViewRenderer( const wxString &varianttype,
 670                                         wxDataViewCellMode mode,
 671                                         int align) :
 672     wxDataViewCustomRendererBase( varianttype, mode, align )
 673 {
 674     m_align = align;
 675     m_mode = mode;
 676     m_ellipsizeMode = wxELLIPSIZE_MIDDLE;
 677     m_dc = NULL;
 678 }
 679
 680 wxDataViewRenderer::~wxDataViewRenderer()
 681 {
 682     delete m_dc;
 683 }
 684
 685 wxDC *wxDataViewRenderer::GetDC()
 686 {
 687     if (m_dc == NULL)
 688     {
 689         if (GetOwner() == NULL)
 690             return NULL;
 691         if (GetOwner()->GetOwner() == NULL)
 692             return NULL;
 693         m_dc = new wxClientDC( GetOwner()->GetOwner() );
 694     }
 695
 696     return m_dc;
 697 }
 698
 699 void wxDataViewRenderer::SetAlignment( int align )
 700 {
 701     m_align=align;
 702 }
 703
 704 int wxDataViewRenderer::GetAlignment() const
 705 {
 706     return m_align;
 707 }
 708
 709 // ---------------------------------------------------------
 710 // wxDataViewCustomRenderer
 711 // ---------------------------------------------------------
 712
 713 IMPLEMENT_ABSTRACT_CLASS(wxDataViewCustomRenderer, wxDataViewRenderer)
 714
 715 wxDataViewCustomRenderer::wxDataViewCustomRenderer( const wxString &varianttype,
 716                         wxDataViewCellMode mode, int align ) :
 717     wxDataViewRenderer( varianttype, mode, align )
 718 {
 719 }
 720
 721 // ---------------------------------------------------------
 722 // wxDataViewTextRenderer
 723 // ---------------------------------------------------------
 724
 725 IMPLEMENT_CLASS(wxDataViewTextRenderer, wxDataViewRenderer)
 726
 727 wxDataViewTextRenderer::wxDataViewTextRenderer( const wxString &varianttype,
 728                                                 wxDataViewCellMode mode, int align ) :
 729     wxDataViewRenderer( varianttype, mode, align )
 730 {
 731 }
 732
 733 bool wxDataViewTextRenderer::SetValue( const wxVariant &value )
 734 {
 735     m_text = value.GetString();
 736
 737     return true;
 738 }
 739
 740 bool wxDataViewTextRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 741 {
 742     return false;
 743 }
 744
 745 bool wxDataViewTextRenderer::HasEditorCtrl() const
 746 {
 747     return true;
 748 }
 749
 750 wxWindow* wxDataViewTextRenderer::CreateEditorCtrl( wxWindow *parent,
 751         wxRect labelRect, const wxVariant &value )
 752 {
 753     wxTextCtrl* ctrl = new wxTextCtrl( parent, wxID_ANY, value,
 754                                        wxPoint(labelRect.x,labelRect.y),
 755                                        wxSize(labelRect.width,labelRect.height) );
 756
 757     // select the text in the control an place the cursor at the end
 758     ctrl->SetInsertionPointEnd();
 759     ctrl->SelectAll();
 760
 761     return ctrl;
 762 }
 763
 764 bool wxDataViewTextRenderer::GetValueFromEditorCtrl( wxWindow *editor, wxVariant &value )
 765 {
 766     wxTextCtrl *text = (wxTextCtrl*) editor;
 767     value = text->GetValue();
 768     return true;
 769 }
 770
 771 bool wxDataViewTextRenderer::Render(wxRect rect, wxDC *dc, int state)
 772 {
 773     RenderText(m_text, 0, rect, dc, state);
 774     return true;
 775 }
 776
 777 wxSize wxDataViewTextRenderer::GetSize() const
 778 {
 779     if (!m_text.empty())
 780         return GetTextExtent(m_text);
 781     else
 782         return wxSize(wxDVC_DEFAULT_RENDERER_SIZE,wxDVC_DEFAULT_RENDERER_SIZE);
 783 }
 784
 785 // ---------------------------------------------------------
 786 // wxDataViewBitmapRenderer
 787 // ---------------------------------------------------------
 788
 789 IMPLEMENT_CLASS(wxDataViewBitmapRenderer, wxDataViewRenderer)
 790
 791 wxDataViewBitmapRenderer::wxDataViewBitmapRenderer( const wxString &varianttype,
 792                                                     wxDataViewCellMode mode, int align ) :
 793     wxDataViewRenderer( varianttype, mode, align )
 794 {
 795 }
 796
 797 bool wxDataViewBitmapRenderer::SetValue( const wxVariant &value )
 798 {
 799     if (value.GetType() == wxT("wxBitmap"))
 800         m_bitmap << value;
 801     if (value.GetType() == wxT("wxIcon"))
 802         m_icon << value;
 803
 804     return true;
 805 }
 806
 807 bool wxDataViewBitmapRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 808 {
 809     return false;
 810 }
 811
 812 bool wxDataViewBitmapRenderer::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
 813 {
 814     if (m_bitmap.IsOk())
 815         dc->DrawBitmap( m_bitmap, cell.x, cell.y );
 816     else if (m_icon.IsOk())
 817         dc->DrawIcon( m_icon, cell.x, cell.y );
 818
 819     return true;
 820 }
 821
 822 wxSize wxDataViewBitmapRenderer::GetSize() const
 823 {
 824     if (m_bitmap.IsOk())
 825         return wxSize( m_bitmap.GetWidth(), m_bitmap.GetHeight() );
 826     else if (m_icon.IsOk())
 827         return wxSize( m_icon.GetWidth(), m_icon.GetHeight() );
 828
 829     return wxSize(wxDVC_DEFAULT_RENDERER_SIZE,wxDVC_DEFAULT_RENDERER_SIZE);
 830 }
 831
 832 // ---------------------------------------------------------
 833 // wxDataViewToggleRenderer
 834 // ---------------------------------------------------------
 835
 836 IMPLEMENT_ABSTRACT_CLASS(wxDataViewToggleRenderer, wxDataViewRenderer)
 837
 838 wxDataViewToggleRenderer::wxDataViewToggleRenderer( const wxString &varianttype,
 839                         wxDataViewCellMode mode, int align ) :
 840     wxDataViewRenderer( varianttype, mode, align )
 841 {
 842     m_toggle = false;
 843 }
 844
 845 bool wxDataViewToggleRenderer::SetValue( const wxVariant &value )
 846 {
 847     m_toggle = value.GetBool();
 848
 849     return true;
 850 }
 851
 852 bool wxDataViewToggleRenderer::GetValue( wxVariant &WXUNUSED(value) ) const
 853 {
 854     return false;
 855 }
 856
 857 bool wxDataViewToggleRenderer::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
 858 {
 859     int flags = 0;
 860     if (m_toggle)
 861         flags |= wxCONTROL_CHECKED;
 862     if (GetMode() != wxDATAVIEW_CELL_ACTIVATABLE ||
 863         GetEnabled() == false)
 864         flags |= wxCONTROL_DISABLED;
 865
 866     // check boxes we draw must always have the same, standard size (if it's
 867     // bigger than the cell size the checkbox will be truncated because the
 868     // caller had set the clipping rectangle to prevent us from drawing outside
 869     // the cell)
 870     cell.SetSize(GetSize());
 871
 872     wxRendererNative::Get().DrawCheckBox(
 873             GetOwner()->GetOwner(),
 874             *dc,
 875             cell,
 876             flags );
 877
 878     return true;
 879 }
 880
 881 bool wxDataViewToggleRenderer::WXOnLeftClick(const wxPoint& cursor,
 882                                              const wxRect& WXUNUSED(cell),
 883                                              wxDataViewModel *model,
 884                                              const wxDataViewItem& item,
 885                                              unsigned int col)
 886 {
 887     // only react to clicks directly on the checkbox, not elsewhere in the same cell:
 888     if (!wxRect(GetSize()).Contains(cursor))
 889         return false;
 890
 891     if (model->IsEnabled(item, col))
 892     {
 893         model->ChangeValue(!m_toggle, item, col);
 894         return true;
 895     }
 896
 897     return false;
 898 }
 899
 900 wxSize wxDataViewToggleRenderer::GetSize() const
 901 {
 902     // the window parameter is not used by GetCheckBoxSize() so it's
 903     // safe to pass NULL
 904     return wxRendererNative::Get().GetCheckBoxSize(NULL);
 905 }
 906
 907 // ---------------------------------------------------------
 908 // wxDataViewProgressRenderer
 909 // ---------------------------------------------------------
 910
 911 IMPLEMENT_ABSTRACT_CLASS(wxDataViewProgressRenderer, wxDataViewRenderer)
 912
 913 wxDataViewProgressRenderer::wxDataViewProgressRenderer( const wxString &label,
 914     const wxString &varianttype, wxDataViewCellMode mode, int align ) :
 915     wxDataViewRenderer( varianttype, mode, align )
 916 {
 917     m_label = label;
 918     m_value = 0;
 919 }
 920
 921 bool wxDataViewProgressRenderer::SetValue( const wxVariant &value )
 922 {
 923     m_value = (long) value;
 924
 925     if (m_value < 0) m_value = 0;
 926     if (m_value > 100) m_value = 100;
 927
 928     return true;
 929 }
 930
 931 bool wxDataViewProgressRenderer::GetValue( wxVariant &value ) const
 932 {
 933     value = (long) m_value;
 934     return true;
 935 }
 936
 937 bool
 938 wxDataViewProgressRenderer::Render(wxRect rect, wxDC *dc, int WXUNUSED(state))
 939 {
 940     // deflate the rect to leave a small border between bars in adjacent rows
 941     wxRect bar = rect.Deflate(0, 1);
 942
 943     dc->SetBrush( *wxTRANSPARENT_BRUSH );
 944     dc->SetPen( *wxBLACK_PEN );
 945     dc->DrawRectangle( bar );
 946
 947     bar.width = (int)(bar.width * m_value / 100.);
 948     dc->SetPen( *wxTRANSPARENT_PEN );
 949
 950     const wxDataViewItemAttr& attr = GetAttr();
 951     dc->SetBrush( attr.HasColour() ? wxBrush(attr.GetColour())
 952                                   : *wxBLUE_BRUSH );
 953     dc->DrawRectangle( bar );
 954
 955     return true;
 956 }
 957
 958 wxSize wxDataViewProgressRenderer::GetSize() const
 959 {
 960     return wxSize(40,12);
 961 }
 962
 963 // ---------------------------------------------------------
 964 // wxDataViewDateRenderer
 965 // ---------------------------------------------------------
 966
 967 #define wxUSE_DATE_RENDERER_POPUP (wxUSE_CALENDARCTRL && wxUSE_POPUPWIN)
 968
 969 #if wxUSE_DATE_RENDERER_POPUP
 970
 971 class wxDataViewDateRendererPopupTransient: public wxPopupTransientWindow
 972 {
 973 public:
 974     wxDataViewDateRendererPopupTransient( wxWindow* parent, wxDateTime *value,
 975         wxDataViewModel *model, const wxDataViewItem & item, unsigned int col) :
 976         wxPopupTransientWindow( parent, wxBORDER_SIMPLE ),
 977         m_item( item )
 978     {
 979         m_model = model;
 980         m_col = col;
 981         m_cal = new wxCalendarCtrl( this, wxID_ANY, *value );
 982         wxBoxSizer *sizer = new wxBoxSizer( wxHORIZONTAL );
 983         sizer->Add( m_cal, 1, wxGROW );
 984         SetSizer( sizer );
 985         sizer->Fit( this );
 986     }
 987
 988     void OnCalendar( wxCalendarEvent &event );
 989
 990     wxCalendarCtrl      *m_cal;
 991     wxDataViewModel *m_model;
 992     unsigned int               m_col;
 993     const wxDataViewItem &   m_item;
 994
 995 protected:
 996     virtual void OnDismiss()
 997     {
 998     }
 999
1000 private:
1001     DECLARE_EVENT_TABLE()
1002 };
1003
1004 BEGIN_EVENT_TABLE(wxDataViewDateRendererPopupTransient,wxPopupTransientWindow)
1005     EVT_CALENDAR( wxID_ANY, wxDataViewDateRendererPopupTransient::OnCalendar )
1006 END_EVENT_TABLE()
1007
1008 void wxDataViewDateRendererPopupTransient::OnCalendar( wxCalendarEvent &event )
1009 {
1010     m_model->ChangeValue( event.GetDate(), m_item, m_col );
1011     DismissAndNotify();
1012 }
1013
1014 #endif // wxUSE_DATE_RENDERER_POPUP
1015
1016 IMPLEMENT_ABSTRACT_CLASS(wxDataViewDateRenderer, wxDataViewRenderer)
1017
1018 wxDataViewDateRenderer::wxDataViewDateRenderer( const wxString &varianttype,
1019                         wxDataViewCellMode mode, int align ) :
1020     wxDataViewRenderer( varianttype, mode, align )
1021 {
1022 }
1023
1024 bool wxDataViewDateRenderer::SetValue( const wxVariant &value )
1025 {
1026     m_date = value.GetDateTime();
1027
1028     return true;
1029 }
1030
1031 bool wxDataViewDateRenderer::GetValue( wxVariant &value ) const
1032 {
1033     value = m_date;
1034     return true;
1035 }
1036
1037 bool wxDataViewDateRenderer::Render( wxRect cell, wxDC *dc, int state )
1038 {
1039     wxString tmp = m_date.FormatDate();
1040     RenderText( tmp, 0, cell, dc, state );
1041     return true;
1042 }
1043
1044 wxSize wxDataViewDateRenderer::GetSize() const
1045 {
1046     return GetTextExtent(m_date.FormatDate());
1047 }
1048
1049 bool wxDataViewDateRenderer::WXOnActivate(const wxRect& WXUNUSED(cell),
1050                                           wxDataViewModel *model,
1051                                           const wxDataViewItem& item,
1052                                           unsigned int col)
1053 {
1054     wxDateTime dtOld = m_date;
1055
1056 #if wxUSE_DATE_RENDERER_POPUP
1057     wxDataViewDateRendererPopupTransient *popup = new wxDataViewDateRendererPopupTransient(
1058         GetOwner()->GetOwner()->GetParent(), &dtOld, model, item, col);
1059     wxPoint pos = wxGetMousePosition();
1060     popup->Move( pos );
1061     popup->Layout();
1062     popup->Popup( popup->m_cal );
1063 #else // !wxUSE_DATE_RENDERER_POPUP
1064     wxMessageBox(dtOld.Format());
1065 #endif // wxUSE_DATE_RENDERER_POPUP/!wxUSE_DATE_RENDERER_POPUP
1066
1067     return true;
1068 }
1069
1070 // ---------------------------------------------------------
1071 // wxDataViewIconTextRenderer
1072 // ---------------------------------------------------------
1073
1074 IMPLEMENT_CLASS(wxDataViewIconTextRenderer, wxDataViewRenderer)
1075
1076 wxDataViewIconTextRenderer::wxDataViewIconTextRenderer(
1077 const wxString &varianttype, wxDataViewCellMode mode, int align ) :
1078     wxDataViewRenderer( varianttype, mode, align )
1079 {
1080     SetMode(mode);
1081     SetAlignment(align);
1082 }
1083
1084 bool wxDataViewIconTextRenderer::SetValue( const wxVariant &value )
1085 {
1086     m_value << value;
1087     return true;
1088 }
1089
1090 bool wxDataViewIconTextRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
1091 {
1092     return false;
1093 }
1094
1095 bool wxDataViewIconTextRenderer::Render(wxRect rect, wxDC *dc, int state)
1096 {
1097     int xoffset = 0;
1098
1099     const wxIcon& icon = m_value.GetIcon();
1100     if ( icon.IsOk() )
1101     {
1102         dc->DrawIcon(icon, rect.x, rect.y + (rect.height - icon.GetHeight())/2);
1103         xoffset = icon.GetWidth()+4;
1104     }
1105
1106     RenderText(m_value.GetText(), xoffset, rect, dc, state);
1107
1108     return true;
1109 }
1110
1111 wxSize wxDataViewIconTextRenderer::GetSize() const
1112 {
1113     if (!m_value.GetText().empty())
1114     {
1115         wxSize size = GetTextExtent(m_value.GetText());
1116
1117         if (m_value.GetIcon().IsOk())
1118             size.x += m_value.GetIcon().GetWidth() + 4;
1119         return size;
1120     }
1121     return wxSize(80,20);
1122 }
1123
1124 wxWindow* wxDataViewIconTextRenderer::CreateEditorCtrl(wxWindow *parent, wxRect labelRect, const wxVariant& value)
1125 {
1126     wxDataViewIconText iconText;
1127     iconText << value;
1128
1129     wxString text = iconText.GetText();
1130
1131     // adjust the label rect to take the width of the icon into account
1132     if (iconText.GetIcon().IsOk())
1133     {
1134         int w = iconText.GetIcon().GetWidth() + 4;
1135         labelRect.x += w;
1136         labelRect.width -= w;
1137     }
1138
1139     wxTextCtrl* ctrl = new wxTextCtrl( parent, wxID_ANY, text,
1140                                        wxPoint(labelRect.x,labelRect.y),
1141                                        wxSize(labelRect.width,labelRect.height) );
1142
1143     // select the text in the control an place the cursor at the end
1144     ctrl->SetInsertionPointEnd();
1145     ctrl->SelectAll();
1146
1147     return ctrl;
1148 }
1149
1150 bool wxDataViewIconTextRenderer::GetValueFromEditorCtrl( wxWindow *editor, wxVariant& value )
1151 {
1152     wxTextCtrl *text = (wxTextCtrl*) editor;
1153
1154     wxDataViewIconText iconText(text->GetValue(), m_value.GetIcon());
1155     value << iconText;
1156     return true;
1157 }
1158
1159 //-----------------------------------------------------------------------------
1160 // wxDataViewDropTarget
1161 //-----------------------------------------------------------------------------
1162
1163 #if wxUSE_DRAG_AND_DROP
1164
1165 class wxBitmapCanvas: public wxWindow
1166 {
1167 public:
1168     wxBitmapCanvas( wxWindow *parent, const wxBitmap &bitmap, const wxSize &size ) :
1169     wxWindow( parent, wxID_ANY, wxPoint(0,0), size )
1170     {
1171         m_bitmap = bitmap;
1172         Connect( wxEVT_PAINT, wxPaintEventHandler(wxBitmapCanvas::OnPaint) );
1173     }
1174
1175     void OnPaint( wxPaintEvent &WXUNUSED(event) )
1176     {
1177         wxPaintDC dc(this);
1178         dc.DrawBitmap( m_bitmap, 0, 0);
1179     }
1180
1181     wxBitmap m_bitmap;
1182 };
1183
1184 class wxDataViewDropSource: public wxDropSource
1185 {
1186 public:
1187     wxDataViewDropSource( wxDataViewMainWindow *win, unsigned int row ) :
1188         wxDropSource( win )
1189     {
1190         m_win = win;
1191         m_row = row;
1192         m_hint = NULL;
1193     }
1194
1195     ~wxDataViewDropSource()
1196     {
1197         delete m_hint;
1198     }
1199
1200     virtual bool GiveFeedback( wxDragResult WXUNUSED(effect) )
1201     {
1202         wxPoint pos = wxGetMousePosition();
1203
1204         if (!m_hint)
1205         {
1206             int liney = m_win->GetLineStart( m_row );
1207             int linex = 0;
1208             m_win->GetOwner()->CalcUnscrolledPosition( 0, liney, NULL, &liney );
1209             m_win->ClientToScreen( &linex, &liney );
1210             m_dist_x = pos.x - linex;
1211             m_dist_y = pos.y - liney;
1212
1213             int indent = 0;
1214             wxBitmap ib = m_win->CreateItemBitmap( m_row, indent );
1215             m_dist_x -= indent;
1216             m_hint = new wxFrame( m_win->GetParent(), wxID_ANY, wxEmptyString,
1217                                         wxPoint(pos.x - m_dist_x, pos.y + 5 ),
1218                                         ib.GetSize(),
1219                                         wxFRAME_TOOL_WINDOW |
1220                                         wxFRAME_FLOAT_ON_PARENT |
1221                                         wxFRAME_NO_TASKBAR |
1222                                         wxNO_BORDER );
1223             new wxBitmapCanvas( m_hint, ib, ib.GetSize() );
1224             m_hint->Show();
1225         }
1226         else
1227         {
1228             m_hint->Move( pos.x - m_dist_x, pos.y + 5  );
1229             m_hint->SetTransparent( 128 );
1230         }
1231
1232         return false;
1233     }
1234
1235     wxDataViewMainWindow   *m_win;
1236     unsigned int            m_row;
1237     wxFrame                *m_hint;
1238     int m_dist_x,m_dist_y;
1239 };
1240
1241
1242 class wxDataViewDropTarget: public wxDropTarget
1243 {
1244 public:
1245     wxDataViewDropTarget( wxDataObject *obj, wxDataViewMainWindow *win ) :
1246         wxDropTarget( obj )
1247     {
1248         m_win = win;
1249     }
1250
1251     virtual wxDragResult OnDragOver( wxCoord x, wxCoord y, wxDragResult def )
1252     {
1253         wxDataFormat format = GetMatchingPair();
1254         if (format == wxDF_INVALID)
1255             return wxDragNone;
1256         return m_win->OnDragOver( format, x, y, def);
1257     }
1258
1259     virtual bool OnDrop( wxCoord x, wxCoord y )
1260     {
1261         wxDataFormat format = GetMatchingPair();
1262         if (format == wxDF_INVALID)
1263             return false;
1264         return m_win->OnDrop( format, x, y );
1265     }
1266
1267     virtual wxDragResult OnData( wxCoord x, wxCoord y, wxDragResult def )
1268     {
1269         wxDataFormat format = GetMatchingPair();
1270         if (format == wxDF_INVALID)
1271             return wxDragNone;
1272         if (!GetData())
1273             return wxDragNone;
1274         return m_win->OnData( format, x, y, def );
1275     }
1276
1277     virtual void OnLeave()
1278         { m_win->OnLeave(); }
1279
1280     wxDataViewMainWindow   *m_win;
1281 };
1282
1283 #endif // wxUSE_DRAG_AND_DROP
1284
1285 //-----------------------------------------------------------------------------
1286 // wxDataViewRenameTimer
1287 //-----------------------------------------------------------------------------
1288
1289 wxDataViewRenameTimer::wxDataViewRenameTimer( wxDataViewMainWindow *owner )
1290 {
1291     m_owner = owner;
1292 }
1293
1294 void wxDataViewRenameTimer::Notify()
1295 {
1296     m_owner->OnRenameTimer();
1297 }
1298
1299 //-----------------------------------------------------------------------------
1300 // wxDataViewMainWindow
1301 //-----------------------------------------------------------------------------
1302
1303 // The tree building helper, declared firstly
1304 static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
1305                              wxDataViewTreeNode * node);
1306
1307 int LINKAGEMODE wxDataViewSelectionCmp( unsigned int row1, unsigned int row2 )
1308 {
1309     if (row1 > row2) return 1;
1310     if (row1 == row2) return 0;
1311     return -1;
1312 }
1313
1314 IMPLEMENT_ABSTRACT_CLASS(wxDataViewMainWindow, wxWindow)
1315
1316 BEGIN_EVENT_TABLE(wxDataViewMainWindow,wxWindow)
1317     EVT_PAINT         (wxDataViewMainWindow::OnPaint)
1318     EVT_MOUSE_EVENTS  (wxDataViewMainWindow::OnMouse)
1319     EVT_SET_FOCUS     (wxDataViewMainWindow::OnSetFocus)
1320     EVT_KILL_FOCUS    (wxDataViewMainWindow::OnKillFocus)
1321     EVT_CHAR          (wxDataViewMainWindow::OnChar)
1322 END_EVENT_TABLE()
1323
1324 wxDataViewMainWindow::wxDataViewMainWindow( wxDataViewCtrl *parent, wxWindowID id,
1325     const wxPoint &pos, const wxSize &size, const wxString &name ) :
1326     wxWindow( parent, id, pos, size, wxWANTS_CHARS|wxBORDER_NONE, name ),
1327     m_selection( wxDataViewSelectionCmp )
1328
1329 {
1330     SetOwner( parent );
1331
1332     m_lastOnSame = false;
1333     m_renameTimer = new wxDataViewRenameTimer( this );
1334
1335     // TODO: user better initial values/nothing selected
1336     m_currentCol = NULL;
1337     m_currentRow = 0;
1338
1339     m_lineHeight = wxMax( 17, GetCharHeight() + 2 ); // 17 = mini icon height + 1
1340
1341 #if wxUSE_DRAG_AND_DROP
1342     m_dragCount = 0;
1343     m_dragStart = wxPoint(0,0);
1344
1345     m_dragEnabled = false;
1346     m_dropEnabled = false;
1347     m_dropHint = false;
1348     m_dropHintLine = (unsigned int) -1;
1349 #endif // wxUSE_DRAG_AND_DROP
1350
1351     m_lineLastClicked = (unsigned int) -1;
1352     m_lineBeforeLastClicked = (unsigned int) -1;
1353     m_lineSelectSingleOnUp = (unsigned int) -1;
1354
1355     m_hasFocus = false;
1356
1357     SetBackgroundColour( *wxWHITE );
1358
1359     SetBackgroundStyle(wxBG_STYLE_CUSTOM);
1360
1361     m_penRule = wxPen(GetRuleColour());
1362
1363     // compose a pen whichcan draw black lines
1364     // TODO: maybe there is something system colour to use
1365     m_penExpander = wxPen(wxColour(0,0,0));
1366
1367     m_root = new wxDataViewTreeNode( NULL );
1368     m_root->SetHasChildren(true);
1369
1370     // Make m_count = -1 will cause the class recaculate the real displaying number of rows.
1371     m_count = -1;
1372     m_underMouse = NULL;
1373     UpdateDisplay();
1374 }
1375
1376 wxDataViewMainWindow::~wxDataViewMainWindow()
1377 {
1378     DestroyTree();
1379     delete m_renameTimer;
1380 }
1381
1382
1383 #if wxUSE_DRAG_AND_DROP
1384 bool wxDataViewMainWindow::EnableDragSource( const wxDataFormat &format )
1385 {
1386     m_dragFormat = format;
1387     m_dragEnabled = format != wxDF_INVALID;
1388
1389     return true;
1390 }
1391
1392 bool wxDataViewMainWindow::EnableDropTarget( const wxDataFormat &format )
1393 {
1394     m_dropFormat = format;
1395     m_dropEnabled = format != wxDF_INVALID;
1396
1397     if (m_dropEnabled)
1398         SetDropTarget( new wxDataViewDropTarget( new wxCustomDataObject( format ), this ) );
1399
1400     return true;
1401 }
1402
1403 void wxDataViewMainWindow::RemoveDropHint()
1404 {
1405     if (m_dropHint)
1406     {
1407             m_dropHint = false;
1408             RefreshRow( m_dropHintLine );
1409             m_dropHintLine = (unsigned int) -1;
1410     }
1411 }
1412
1413 wxDragResult wxDataViewMainWindow::OnDragOver( wxDataFormat format, wxCoord x,
1414                                                wxCoord y, wxDragResult def )
1415 {
1416     int xx = x;
1417     int yy = y;
1418     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1419     unsigned int row = GetLineAt( yy );
1420
1421     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1422     {
1423         RemoveDropHint();
1424         return wxDragNone;
1425     }
1426
1427     wxDataViewItem item = GetItemByRow( row );
1428
1429     wxDataViewModel *model = GetOwner()->GetModel();
1430
1431     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, m_owner->GetId() );
1432     event.SetEventObject( m_owner );
1433     event.SetItem( item );
1434     event.SetModel( model );
1435     event.SetDataFormat( format );
1436     if (!m_owner->HandleWindowEvent( event ))
1437     {
1438         RemoveDropHint();
1439         return wxDragNone;
1440     }
1441
1442     if (!event.IsAllowed())
1443     {
1444         RemoveDropHint();
1445         return wxDragNone;
1446     }
1447
1448
1449     if (m_dropHint && (row != m_dropHintLine))
1450         RefreshRow( m_dropHintLine );
1451     m_dropHint = true;
1452     m_dropHintLine = row;
1453     RefreshRow( row );
1454
1455     return def;
1456 }
1457
1458 bool wxDataViewMainWindow::OnDrop( wxDataFormat format, wxCoord x, wxCoord y )
1459 {
1460     RemoveDropHint();
1461
1462     int xx = x;
1463     int yy = y;
1464     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1465     unsigned int row = GetLineAt( yy );
1466
1467     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1468         return false;
1469
1470     wxDataViewItem item = GetItemByRow( row );
1471
1472     wxDataViewModel *model = GetOwner()->GetModel();
1473
1474     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, m_owner->GetId() );
1475     event.SetEventObject( m_owner );
1476     event.SetItem( item );
1477     event.SetModel( model );
1478     event.SetDataFormat( format );
1479     if (!m_owner->HandleWindowEvent( event ))
1480         return false;
1481
1482     if (!event.IsAllowed())
1483         return false;
1484
1485     return true;
1486 }
1487
1488 wxDragResult wxDataViewMainWindow::OnData( wxDataFormat format, wxCoord x, wxCoord y,
1489                                            wxDragResult def )
1490 {
1491     int xx = x;
1492     int yy = y;
1493     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1494     unsigned int row = GetLineAt( yy );
1495
1496     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1497         return wxDragNone;
1498
1499     wxDataViewItem item = GetItemByRow( row );
1500
1501     wxDataViewModel *model = GetOwner()->GetModel();
1502
1503     wxCustomDataObject *obj = (wxCustomDataObject *) GetDropTarget()->GetDataObject();
1504
1505     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP, m_owner->GetId() );
1506     event.SetEventObject( m_owner );
1507     event.SetItem( item );
1508     event.SetModel( model );
1509     event.SetDataFormat( format );
1510     event.SetDataSize( obj->GetSize() );
1511     event.SetDataBuffer( obj->GetData() );
1512     if (!m_owner->HandleWindowEvent( event ))
1513         return wxDragNone;
1514
1515     if (!event.IsAllowed())
1516         return wxDragNone;
1517
1518     return def;
1519 }
1520
1521 void wxDataViewMainWindow::OnLeave()
1522 {
1523     RemoveDropHint();
1524 }
1525
1526 wxBitmap wxDataViewMainWindow::CreateItemBitmap( unsigned int row, int &indent )
1527 {
1528     int height = GetLineHeight( row );
1529     int width = 0;
1530     unsigned int cols = GetOwner()->GetColumnCount();
1531     unsigned int col;
1532     for (col = 0; col < cols; col++)
1533     {
1534         wxDataViewColumn *column = GetOwner()->GetColumnAt(col);
1535         if (column->IsHidden())
1536             continue;      // skip it!
1537         width += column->GetWidth();
1538     }
1539
1540     indent = 0;
1541     if (!IsList())
1542     {
1543         wxDataViewTreeNode *node = GetTreeNodeByRow(row);
1544         indent = GetOwner()->GetIndent() * node->GetIndentLevel();
1545         indent = indent + m_lineHeight;
1546             // try to use the m_lineHeight as the expander space
1547
1548         if(!node->HasChildren())
1549             delete node;
1550     }
1551     width -= indent;
1552
1553     wxBitmap bitmap( width, height );
1554     wxMemoryDC dc( bitmap );
1555     dc.SetFont( GetFont() );
1556     dc.SetPen( *wxBLACK_PEN );
1557     dc.SetBrush( *wxWHITE_BRUSH );
1558     dc.DrawRectangle( 0,0,width,height );
1559
1560     wxDataViewModel *model = m_owner->GetModel();
1561
1562     wxDataViewColumn *expander = GetOwner()->GetExpanderColumn();
1563     if (!expander)
1564     {
1565         // TODO-RTL: last column for RTL support
1566         expander = GetOwner()->GetColumnAt( 0 );
1567         GetOwner()->SetExpanderColumn(expander);
1568     }
1569
1570
1571     int x = 0;
1572     for (col = 0; col < cols; col++)
1573     {
1574         wxDataViewColumn *column = GetOwner()->GetColumnAt( col );
1575         wxDataViewRenderer *cell = column->GetRenderer();
1576
1577         if (column->IsHidden())
1578             continue;       // skip it!
1579
1580         width = column->GetWidth();
1581
1582         if (column == expander)
1583             width -= indent;
1584
1585         wxDataViewItem item = GetItemByRow( row );
1586         cell->PrepareForItem(model, item, column->GetModelColumn());
1587
1588         wxRect item_rect(x, 0, width, height);
1589         item_rect.Deflate(PADDING_RIGHTLEFT, 0);
1590
1591         // dc.SetClippingRegion( item_rect );
1592         cell->WXCallRender(item_rect, &dc, 0);
1593         // dc.DestroyClippingRegion();
1594
1595         x += width;
1596     }
1597
1598     return bitmap;
1599 }
1600
1601 #endif // wxUSE_DRAG_AND_DROP
1602
1603
1604 void wxDataViewMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
1605 {
1606     wxDataViewModel *model = GetOwner()->GetModel();
1607     wxAutoBufferedPaintDC dc( this );
1608
1609 #ifdef __WXMSW__
1610     dc.SetBrush(GetOwner()->GetBackgroundColour());
1611     dc.SetPen( *wxTRANSPARENT_PEN );
1612     dc.DrawRectangle(GetClientSize());
1613 #endif
1614
1615     if ( IsEmpty() )
1616     {
1617         // No items to draw.
1618         return;
1619     }
1620
1621     // prepare the DC
1622     GetOwner()->PrepareDC( dc );
1623     dc.SetFont( GetFont() );
1624
1625     wxRect update = GetUpdateRegion().GetBox();
1626     m_owner->CalcUnscrolledPosition( update.x, update.y, &update.x, &update.y );
1627
1628     // compute which items needs to be redrawn
1629     unsigned int item_start = GetLineAt( wxMax(0,update.y) );
1630     unsigned int item_count =
1631         wxMin( (int)(  GetLineAt( wxMax(0,update.y+update.height) ) - item_start + 1),
1632             (int)(GetRowCount( ) - item_start));
1633     unsigned int item_last = item_start + item_count;
1634
1635     // Send the event to wxDataViewCtrl itself.
1636     wxWindow * const parent = GetParent();
1637     wxDataViewEvent cache_event(wxEVT_COMMAND_DATAVIEW_CACHE_HINT, parent->GetId());
1638     cache_event.SetEventObject(parent);
1639     cache_event.SetCache(item_start, item_last - 1);
1640     parent->ProcessWindowEvent(cache_event);
1641
1642     // compute which columns needs to be redrawn
1643     unsigned int cols = GetOwner()->GetColumnCount();
1644     if ( !cols )
1645     {
1646         // we assume that we have at least one column below and painting an
1647         // empty control is unnecessary anyhow
1648         return;
1649     }
1650
1651     unsigned int col_start = 0;
1652     unsigned int x_start;
1653     for (x_start = 0; col_start < cols; col_start++)
1654     {
1655         wxDataViewColumn *col = GetOwner()->GetColumnAt(col_start);
1656         if (col->IsHidden())
1657             continue;      // skip it!
1658
1659         unsigned int w = col->GetWidth();
1660         if (x_start+w >= (unsigned int)update.x)
1661             break;
1662
1663         x_start += w;
1664     }
1665
1666     unsigned int col_last = col_start;
1667     unsigned int x_last = x_start;
1668     for (; col_last < cols; col_last++)
1669     {
1670         wxDataViewColumn *col = GetOwner()->GetColumnAt(col_last);
1671         if (col->IsHidden())
1672             continue;      // skip it!
1673
1674         if (x_last > (unsigned int)update.GetRight())
1675             break;
1676
1677         x_last += col->GetWidth();
1678     }
1679
1680     // Draw horizontal rules if required
1681     if ( m_owner->HasFlag(wxDV_HORIZ_RULES) )
1682     {
1683         dc.SetPen(m_penRule);
1684         dc.SetBrush(*wxTRANSPARENT_BRUSH);
1685
1686         for (unsigned int i = item_start; i <= item_last; i++)
1687         {
1688             int y = GetLineStart( i );
1689             dc.DrawLine(x_start, y, x_last, y);
1690         }
1691     }
1692
1693     // Draw vertical rules if required
1694     if ( m_owner->HasFlag(wxDV_VERT_RULES) )
1695     {
1696         dc.SetPen(m_penRule);
1697         dc.SetBrush(*wxTRANSPARENT_BRUSH);
1698
1699         // NB: Vertical rules are drawn in the last pixel of a column so that
1700         //     they align perfectly with native MSW wxHeaderCtrl as well as for
1701         //     consistency with MSW native list control. There's no vertical
1702         //     rule at the most-left side of the control.
1703
1704         int x = x_start - 1;
1705         for (unsigned int i = col_start; i < col_last; i++)
1706         {
1707             wxDataViewColumn *col = GetOwner()->GetColumnAt(i);
1708             if (col->IsHidden())
1709                 continue;       // skip it
1710
1711             x += col->GetWidth();
1712
1713             dc.DrawLine(x, GetLineStart( item_start ),
1714                         x, GetLineStart( item_last ) );
1715         }
1716     }
1717
1718     // redraw the background for the items which are selected/current
1719     for (unsigned int item = item_start; item < item_last; item++)
1720     {
1721         bool selected = m_selection.Index( item ) != wxNOT_FOUND;
1722         if (selected || item == m_currentRow)
1723         {
1724             int flags = selected ? (int)wxCONTROL_SELECTED : 0;
1725             if (item == m_currentRow)
1726                 flags |= wxCONTROL_CURRENT;
1727             if (m_hasFocus)
1728                 flags |= wxCONTROL_FOCUSED;
1729
1730             wxRect rect( x_start, GetLineStart( item ),
1731                          x_last - x_start, GetLineHeight( item ) );
1732             wxRendererNative::Get().DrawItemSelectionRect
1733                                 (
1734                                     this,
1735                                     dc,
1736                                     rect,
1737                                     flags
1738                                 );
1739         }
1740     }
1741
1742 #if wxUSE_DRAG_AND_DROP
1743     if (m_dropHint)
1744     {
1745         wxRect rect( x_start, GetLineStart( m_dropHintLine ),
1746                      x_last - x_start, GetLineHeight( m_dropHintLine ) );
1747         dc.SetPen( *wxBLACK_PEN );
1748         dc.SetBrush( *wxTRANSPARENT_BRUSH );
1749         dc.DrawRectangle( rect );
1750     }
1751 #endif // wxUSE_DRAG_AND_DROP
1752
1753     wxDataViewColumn *expander = GetOwner()->GetExpanderColumn();
1754     if (!expander)
1755     {
1756         // TODO-RTL: last column for RTL support
1757         expander = GetOwner()->GetColumnAt( 0 );
1758         GetOwner()->SetExpanderColumn(expander);
1759     }
1760
1761     // redraw all cells for all rows which must be repainted and all columns
1762     wxRect cell_rect;
1763     cell_rect.x = x_start;
1764     for (unsigned int i = col_start; i < col_last; i++)
1765     {
1766         wxDataViewColumn *col = GetOwner()->GetColumnAt( i );
1767         wxDataViewRenderer *cell = col->GetRenderer();
1768         cell_rect.width = col->GetWidth();
1769
1770         if ( col->IsHidden() || cell_rect.width <= 0 )
1771             continue;       // skip it!
1772
1773         for (unsigned int item = item_start; item < item_last; item++)
1774         {
1775             // get the cell value and set it into the renderer
1776             wxDataViewTreeNode *node = NULL;
1777             wxDataViewItem dataitem;
1778
1779             if (!IsVirtualList())
1780             {
1781                 node = GetTreeNodeByRow(item);
1782                 if( node == NULL )
1783                     continue;
1784
1785                 dataitem = node->GetItem();
1786
1787                 // Skip all columns of "container" rows except the expander
1788                 // column itself unless HasContainerColumns() overrides this.
1789                 if ( col != GetOwner()->GetExpanderColumn() &&
1790                         model->IsContainer(dataitem) &&
1791                             !model->HasContainerColumns(dataitem) )
1792                     continue;
1793             }
1794             else
1795             {
1796                 dataitem = wxDataViewItem( wxUIntToPtr(item+1) );
1797             }
1798
1799             cell->PrepareForItem(model, dataitem, col->GetModelColumn());
1800
1801             // update cell_rect
1802             cell_rect.y = GetLineStart( item );
1803             cell_rect.height = GetLineHeight( item );
1804
1805             // deal with the expander
1806             int indent = 0;
1807             if ((!IsList()) && (col == expander))
1808             {
1809                 // Calculate the indent first
1810                 indent = GetOwner()->GetIndent() * node->GetIndentLevel();
1811
1812                 // we reserve m_lineHeight of horizontal space for the expander
1813                 // but leave EXPANDER_MARGIN around the expander itself
1814                 int exp_x = cell_rect.x + indent + EXPANDER_MARGIN;
1815
1816                 indent += m_lineHeight;
1817
1818                 // draw expander if needed and visible
1819                 if ( node->HasChildren() && exp_x < cell_rect.GetRight() )
1820                 {
1821                     dc.SetPen( m_penExpander );
1822                     dc.SetBrush( wxNullBrush );
1823
1824                     int exp_size = m_lineHeight - 2*EXPANDER_MARGIN;
1825                     int exp_y = cell_rect.y + (cell_rect.height - exp_size)/2
1826                                    + EXPANDER_MARGIN - EXPANDER_OFFSET;
1827
1828                     const wxRect rect(exp_x, exp_y, exp_size, exp_size);
1829
1830                     int flag = 0;
1831                     if ( m_underMouse == node )
1832                         flag |= wxCONTROL_CURRENT;
1833                     if ( node->IsOpen() )
1834                         flag |= wxCONTROL_EXPANDED;
1835
1836                     // ensure that we don't overflow the cell (which might
1837                     // happen if the column is very narrow)
1838                     wxDCClipper clip(dc, cell_rect);
1839
1840                     wxRendererNative::Get().DrawTreeItemButton( this, dc, rect, flag);
1841                 }
1842
1843                 // force the expander column to left-center align
1844                 cell->SetAlignment( wxALIGN_CENTER_VERTICAL );
1845             }
1846             if (node && !node->HasChildren())
1847             {
1848                 // Yes, if the node does not have any child, it must be a leaf which
1849                 // mean that it is a temporarily created by GetTreeNodeByRow
1850                 wxDELETE(node);
1851             }
1852
1853             wxRect item_rect = cell_rect;
1854             item_rect.Deflate(PADDING_RIGHTLEFT, 0);
1855
1856             // account for the tree indent (harmless if we're not indented)
1857             item_rect.x += indent;
1858             item_rect.width -= indent;
1859
1860             if ( item_rect.width <= 0 )
1861                 continue;
1862
1863             int state = 0;
1864             if (m_hasFocus && (m_selection.Index(item) != wxNOT_FOUND))
1865                 state |= wxDATAVIEW_CELL_SELECTED;
1866
1867             // TODO: it would be much more efficient to create a clipping
1868             //       region for the entire column being rendered (in the OnPaint
1869             //       of wxDataViewMainWindow) instead of a single clip region for
1870             //       each cell. However it would mean that each renderer should
1871             //       respect the given wxRect's top & bottom coords, eventually
1872             //       violating only the left & right coords - however the user can
1873             //       make its own renderer and thus we cannot be sure of that.
1874             wxDCClipper clip(dc, item_rect);
1875
1876             cell->WXCallRender(item_rect, &dc, state);
1877         }
1878
1879         cell_rect.x += cell_rect.width;
1880     }
1881 }
1882
1883 void wxDataViewMainWindow::OnRenameTimer()
1884 {
1885     // We have to call this here because changes may just have
1886     // been made and no screen update taken place.
1887     if ( m_dirty )
1888     {
1889         // TODO: use wxTheApp->SafeYieldFor(NULL, wxEVT_CATEGORY_UI) instead
1890         //       (needs to be tested!)
1891         wxSafeYield();
1892     }
1893
1894     wxDataViewItem item = GetItemByRow( m_currentRow );
1895
1896     wxRect labelRect = GetItemRect(item, m_currentCol);
1897
1898     m_currentCol->GetRenderer()->StartEditing( item, labelRect );
1899 }
1900
1901 //-----------------------------------------------------------------------------
1902 // Helper class for do operation on the tree node
1903 //-----------------------------------------------------------------------------
1904 class DoJob
1905 {
1906 public:
1907     DoJob() { }
1908     virtual ~DoJob() { }
1909
1910     // The return value control how the tree-walker tranverse the tree
1911     // 0: Job done, stop tranverse and return
1912     // 1: Ignore the current node's subtree and continue
1913     // 2: Job not done, continue
1914     enum  { OK = 0 , IGR = 1, CONT = 2 };
1915     virtual int operator() ( wxDataViewTreeNode * node ) = 0;
1916     virtual int operator() ( void * n ) = 0;
1917 };
1918
1919 bool Walker( wxDataViewTreeNode * node, DoJob & func )
1920 {
1921     if( node==NULL )
1922         return false;
1923
1924     switch( func( node ) )
1925     {
1926         case DoJob::OK :
1927             return true;
1928         case DoJob::IGR:
1929             return false;
1930         case DoJob::CONT:
1931         default:
1932             ;
1933     }
1934
1935     const wxDataViewTreeNodes& nodes = node->GetNodes();
1936     const wxDataViewTreeLeaves& leaves = node->GetChildren();
1937
1938     int len_nodes = nodes.GetCount();
1939     int len = leaves.GetCount();
1940     int i = 0, nodes_i = 0;
1941
1942     for(; i < len; i ++ )
1943     {
1944         void * n = leaves[i];
1945         if( nodes_i < len_nodes && n == nodes[nodes_i]->GetItem().GetID() )
1946         {
1947             wxDataViewTreeNode * nd = nodes[nodes_i];
1948             nodes_i++;
1949
1950             if( Walker( nd , func ) )
1951                 return true;
1952
1953         }
1954         else
1955             switch( func( n ) )
1956             {
1957                 case DoJob::OK :
1958                     return true;
1959                 case DoJob::IGR:
1960                     continue;
1961                 case DoJob::CONT:
1962                 default:
1963                 ;
1964             }
1965     }
1966     return false;
1967 }
1968
1969 bool wxDataViewMainWindow::ItemAdded(const wxDataViewItem & parent, const wxDataViewItem & item)
1970 {
1971
1972     if (IsVirtualList())
1973     {
1974         wxDataViewVirtualListModel *list_model =
1975             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
1976         m_count = list_model->GetCount();
1977     }
1978     else
1979     {
1980         SortPrepare();
1981
1982         wxDataViewTreeNode * node;
1983         node = FindNode(parent);
1984
1985         if( node == NULL )
1986             return false;
1987
1988         node->SetHasChildren( true );
1989
1990         if( g_model->IsContainer( item ) )
1991         {
1992             wxDataViewTreeNode * newnode = new wxDataViewTreeNode( node );
1993             newnode->SetItem(item);
1994             newnode->SetHasChildren( true );
1995             node->AddNode( newnode);
1996         }
1997         else
1998             node->AddLeaf( item.GetID() );
1999
2000         node->ChangeSubTreeCount(1);
2001
2002         m_count = -1;
2003     }
2004
2005     GetOwner()->UpdateColBestWidths();
2006     UpdateDisplay();
2007
2008     return true;
2009 }
2010
2011 static void DestroyTreeHelper( wxDataViewTreeNode * node);
2012
2013 bool wxDataViewMainWindow::ItemDeleted(const wxDataViewItem& parent,
2014                                        const wxDataViewItem& item)
2015 {
2016     if (IsVirtualList())
2017     {
2018         wxDataViewVirtualListModel *list_model =
2019             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
2020         m_count = list_model->GetCount();
2021
2022         if ( !m_selection.empty() )
2023         {
2024             const int row = GetRowByItem(item);
2025
2026             int rowIndexInSelection = wxNOT_FOUND;
2027
2028             const size_t selCount = m_selection.size();
2029             for ( size_t i = 0; i < selCount; i++ )
2030             {
2031                 if ( m_selection[i] == (unsigned)row )
2032                     rowIndexInSelection = i;
2033                 else if ( m_selection[i] > (unsigned)row )
2034                     m_selection[i]--;
2035             }
2036
2037             if ( rowIndexInSelection != wxNOT_FOUND )
2038                 m_selection.RemoveAt(rowIndexInSelection);
2039         }
2040
2041     }
2042     else // general case
2043     {
2044         wxDataViewTreeNode * node = FindNode(parent);
2045
2046         // Notice that it is possible that the item being deleted is not in the
2047         // tree at all, for example we could be deleting a never shown (because
2048         // collapsed) item in a tree model. So it's not an error if we don't know
2049         // about this item, just return without doing anything then.
2050         if ( !node )
2051             return false;
2052
2053         int itemPosInNode = node->GetChildren().Index(item.GetID());
2054         if ( itemPosInNode == wxNOT_FOUND )
2055             return false;
2056
2057         bool isContainer = false;
2058         wxDataViewTreeNode *itemNode = NULL;
2059
2060         const wxDataViewTreeNodes nds = node->GetNodes();
2061         for (size_t i = 0; i < nds.GetCount(); i ++)
2062         {
2063             if (nds[i]->GetItem() == item)
2064             {
2065                 isContainer = true;
2066                 itemNode = nds[i];
2067                 break;
2068             }
2069         }
2070
2071         // Delete the item from wxDataViewTreeNode representation:
2072         int itemsDeleted = 1;
2073         node->GetChildren().Remove( item.GetID() );
2074
2075         if( isContainer )
2076         {
2077             wxDataViewTreeNode *n = node->FindItemAsNode(item);
2078
2079             wxCHECK_MSG( n != NULL, false, "item not found" );
2080
2081             node->GetNodes().Remove( n );
2082             itemsDeleted += n->GetSubTreeCount();
2083             ::DestroyTreeHelper(n);
2084         }
2085
2086         // Make the row number invalid and get a new valid one when user call GetRowCount
2087         m_count = -1;
2088         node->ChangeSubTreeCount(-itemsDeleted);
2089
2090         // Update selection by removing 'item' and its entire children tree from the selection.
2091         if ( !m_selection.empty() )
2092         {
2093             // we can't call GetRowByItem() on 'item', as it's already deleted, so compute it from
2094             // the parent ('node') and position in its list of children
2095             int itemRow;
2096             if ( itemPosInNode == 0 )
2097             {
2098                 // 1st child, row number is that of the parent node + 1
2099                 itemRow = GetRowByItem(node->GetItem()) + 1;
2100             }
2101             else
2102             {
2103                 // row number is that of the sibling above 'item' + its subtree if any + 1
2104                 const wxDataViewItem sibling = wxDataViewItem(node->GetChildren()[itemPosInNode - 1]);
2105                 const wxDataViewTreeNode *siblingNode = node->FindItemAsNode(sibling);
2106
2107                 itemRow = GetRowByItem(sibling);
2108                 if ( siblingNode )
2109                     itemRow += siblingNode->GetSubTreeCount();
2110                 itemRow += 1;
2111             }
2112
2113             wxDataViewSelection newsel(wxDataViewSelectionCmp);
2114
2115             const size_t numSelections = m_selection.size();
2116             for ( size_t i = 0; i < numSelections; ++i )
2117             {
2118                 const int s = m_selection[i];
2119                 if ( s < itemRow )
2120                     newsel.push_back(s);
2121                 else if ( s >= itemRow + itemsDeleted )
2122                     newsel.push_back(s - itemsDeleted);
2123                 // else: deleted item, remove from selection
2124             }
2125
2126             m_selection = newsel;
2127         }
2128     }
2129
2130     // Change the current row to the last row if the current exceed the max row number
2131     if( m_currentRow > GetRowCount() )
2132         ChangeCurrentRow(m_count - 1);
2133
2134     GetOwner()->UpdateColBestWidths();
2135     UpdateDisplay();
2136
2137     return true;
2138 }
2139
2140 bool wxDataViewMainWindow::ItemChanged(const wxDataViewItem & item)
2141 {
2142     SortPrepare();
2143     g_model->Resort();
2144
2145     GetOwner()->UpdateColBestWidths();
2146
2147     // Send event
2148     wxWindow *parent = GetParent();
2149     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
2150     le.SetEventObject(parent);
2151     le.SetModel(GetOwner()->GetModel());
2152     le.SetItem(item);
2153     parent->GetEventHandler()->ProcessEvent(le);
2154
2155     return true;
2156 }
2157
2158 bool wxDataViewMainWindow::ValueChanged( const wxDataViewItem & item, unsigned int model_column )
2159 {
2160     int view_column = -1;
2161     unsigned int n_col = m_owner->GetColumnCount();
2162     for (unsigned i = 0; i < n_col; i++)
2163     {
2164         wxDataViewColumn *column = m_owner->GetColumn( i );
2165         if (column->GetModelColumn() == model_column)
2166         {
2167             view_column = (int) i;
2168             break;
2169         }
2170     }
2171     if (view_column == -1)
2172         return false;
2173
2174     // NOTE: to be valid, we cannot use e.g. INT_MAX - 1
2175 /*#define MAX_VIRTUAL_WIDTH       100000
2176
2177     wxRect rect( 0, row*m_lineHeight, MAX_VIRTUAL_WIDTH, m_lineHeight );
2178     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2179     Refresh( true, &rect );
2180
2181     return true;
2182 */
2183     SortPrepare();
2184     g_model->Resort();
2185
2186     GetOwner()->UpdateColBestWidth(view_column);
2187
2188     // Send event
2189     wxWindow *parent = GetParent();
2190     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
2191     le.SetEventObject(parent);
2192     le.SetModel(GetOwner()->GetModel());
2193     le.SetItem(item);
2194     le.SetColumn(view_column);
2195     le.SetDataViewColumn(GetOwner()->GetColumn(view_column));
2196     parent->GetEventHandler()->ProcessEvent(le);
2197
2198     return true;
2199 }
2200
2201 bool wxDataViewMainWindow::Cleared()
2202 {
2203     DestroyTree();
2204     m_selection.Clear();
2205
2206     SortPrepare();
2207     BuildTree( GetOwner()->GetModel() );
2208
2209     GetOwner()->UpdateColBestWidths();
2210     UpdateDisplay();
2211
2212     return true;
2213 }
2214
2215 void wxDataViewMainWindow::UpdateDisplay()
2216 {
2217     m_dirty = true;
2218     m_underMouse = NULL;
2219 }
2220
2221 void wxDataViewMainWindow::OnInternalIdle()
2222 {
2223     wxWindow::OnInternalIdle();
2224
2225     if (m_dirty)
2226     {
2227         RecalculateDisplay();
2228         m_dirty = false;
2229     }
2230 }
2231
2232 void wxDataViewMainWindow::RecalculateDisplay()
2233 {
2234     wxDataViewModel *model = GetOwner()->GetModel();
2235     if (!model)
2236     {
2237         Refresh();
2238         return;
2239     }
2240
2241     int width = GetEndOfLastCol();
2242     int height = GetLineStart( GetRowCount() );
2243
2244     SetVirtualSize( width, height );
2245     GetOwner()->SetScrollRate( 10, m_lineHeight );
2246
2247     Refresh();
2248 }
2249
2250 void wxDataViewMainWindow::ScrollWindow( int dx, int dy, const wxRect *rect )
2251 {
2252     m_underMouse = NULL;
2253
2254     wxWindow::ScrollWindow( dx, dy, rect );
2255
2256     if (GetOwner()->m_headerArea)
2257         GetOwner()->m_headerArea->ScrollWindow( dx, 0 );
2258 }
2259
2260 void wxDataViewMainWindow::ScrollTo( int rows, int column )
2261 {
2262     m_underMouse = NULL;
2263
2264     int x, y;
2265     m_owner->GetScrollPixelsPerUnit( &x, &y );
2266     int sy = GetLineStart( rows )/y;
2267     int sx = 0;
2268     if( column != -1 )
2269     {
2270         wxRect rect = GetClientRect();
2271         int colnum = 0;
2272         int x_start, w = 0;
2273         int xx, yy, xe;
2274         m_owner->CalcUnscrolledPosition( rect.x, rect.y, &xx, &yy );
2275         for (x_start = 0; colnum < column; colnum++)
2276         {
2277             wxDataViewColumn *col = GetOwner()->GetColumnAt(colnum);
2278             if (col->IsHidden())
2279                 continue;      // skip it!
2280
2281             w = col->GetWidth();
2282             x_start += w;
2283         }
2284
2285         int x_end = x_start + w;
2286         xe = xx + rect.width;
2287         if( x_end > xe )
2288         {
2289             sx = ( xx + x_end - xe )/x;
2290         }
2291         if( x_start < xx )
2292         {
2293             sx = x_start/x;
2294         }
2295     }
2296     m_owner->Scroll( sx, sy );
2297 }
2298
2299 int wxDataViewMainWindow::GetCountPerPage() const
2300 {
2301     wxSize size = GetClientSize();
2302     return size.y / m_lineHeight;
2303 }
2304
2305 int wxDataViewMainWindow::GetEndOfLastCol() const
2306 {
2307     int width = 0;
2308     unsigned int i;
2309     for (i = 0; i < GetOwner()->GetColumnCount(); i++)
2310     {
2311         const wxDataViewColumn *c =
2312             const_cast<wxDataViewCtrl*>(GetOwner())->GetColumnAt( i );
2313
2314         if (!c->IsHidden())
2315             width += c->GetWidth();
2316     }
2317     return width;
2318 }
2319
2320 unsigned int wxDataViewMainWindow::GetFirstVisibleRow() const
2321 {
2322     int x = 0;
2323     int y = 0;
2324     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
2325
2326     return GetLineAt( y );
2327 }
2328
2329 unsigned int wxDataViewMainWindow::GetLastVisibleRow()
2330 {
2331     wxSize client_size = GetClientSize();
2332     m_owner->CalcUnscrolledPosition( client_size.x, client_size.y,
2333                                     &client_size.x, &client_size.y );
2334
2335     // we should deal with the pixel here
2336     unsigned int row = GetLineAt(client_size.y) - 1;
2337
2338     return wxMin( GetRowCount()-1, row );
2339 }
2340
2341 unsigned int wxDataViewMainWindow::GetRowCount()
2342 {
2343     if ( m_count == -1 )
2344     {
2345         m_count = RecalculateCount();
2346         UpdateDisplay();
2347     }
2348     return m_count;
2349 }
2350
2351 void wxDataViewMainWindow::ChangeCurrentRow( unsigned int row )
2352 {
2353     m_currentRow = row;
2354
2355     // send event
2356 }
2357
2358 void wxDataViewMainWindow::SelectAllRows( bool on )
2359 {
2360     if (IsEmpty())
2361         return;
2362
2363     if (on)
2364     {
2365         m_selection.Clear();
2366         for (unsigned int i = 0; i < GetRowCount(); i++)
2367             m_selection.Add( i );
2368         Refresh();
2369     }
2370     else
2371     {
2372         unsigned int first_visible = GetFirstVisibleRow();
2373         unsigned int last_visible = GetLastVisibleRow();
2374         unsigned int i;
2375         for (i = 0; i < m_selection.GetCount(); i++)
2376         {
2377             unsigned int row = m_selection[i];
2378             if ((row >= first_visible) && (row <= last_visible))
2379                 RefreshRow( row );
2380         }
2381         m_selection.Clear();
2382     }
2383 }
2384
2385 void wxDataViewMainWindow::SelectRow( unsigned int row, bool on )
2386 {
2387     if (m_selection.Index( row ) == wxNOT_FOUND)
2388     {
2389         if (on)
2390         {
2391             m_selection.Add( row );
2392             RefreshRow( row );
2393         }
2394     }
2395     else
2396     {
2397         if (!on)
2398         {
2399             m_selection.Remove( row );
2400             RefreshRow( row );
2401         }
2402     }
2403 }
2404
2405 void wxDataViewMainWindow::SelectRows( unsigned int from, unsigned int to, bool on )
2406 {
2407     if (from > to)
2408     {
2409         unsigned int tmp = from;
2410         from = to;
2411         to = tmp;
2412     }
2413
2414     unsigned int i;
2415     for (i = from; i <= to; i++)
2416     {
2417         if (m_selection.Index( i ) == wxNOT_FOUND)
2418         {
2419             if (on)
2420                 m_selection.Add( i );
2421         }
2422         else
2423         {
2424             if (!on)
2425                 m_selection.Remove( i );
2426         }
2427     }
2428     RefreshRows( from, to );
2429 }
2430
2431 void wxDataViewMainWindow::Select( const wxArrayInt& aSelections )
2432 {
2433     for (size_t i=0; i < aSelections.GetCount(); i++)
2434     {
2435         int n = aSelections[i];
2436
2437         m_selection.Add( n );
2438         RefreshRow( n );
2439     }
2440 }
2441
2442 void wxDataViewMainWindow::ReverseRowSelection( unsigned int row )
2443 {
2444     if (m_selection.Index( row ) == wxNOT_FOUND)
2445         m_selection.Add( row );
2446     else
2447         m_selection.Remove( row );
2448     RefreshRow( row );
2449 }
2450
2451 bool wxDataViewMainWindow::IsRowSelected( unsigned int row )
2452 {
2453     return (m_selection.Index( row ) != wxNOT_FOUND);
2454 }
2455
2456 void wxDataViewMainWindow::SendSelectionChangedEvent( const wxDataViewItem& item)
2457 {
2458     wxWindow *parent = GetParent();
2459     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED, parent->GetId());
2460
2461     le.SetEventObject(parent);
2462     le.SetModel(GetOwner()->GetModel());
2463     le.SetItem( item );
2464
2465     parent->GetEventHandler()->ProcessEvent(le);
2466 }
2467
2468 void wxDataViewMainWindow::RefreshRow( unsigned int row )
2469 {
2470     wxRect rect( 0, GetLineStart( row ), GetEndOfLastCol(), GetLineHeight( row ) );
2471     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2472
2473     wxSize client_size = GetClientSize();
2474     wxRect client_rect( 0, 0, client_size.x, client_size.y );
2475     wxRect intersect_rect = client_rect.Intersect( rect );
2476     if (intersect_rect.width > 0)
2477         Refresh( true, &intersect_rect );
2478 }
2479
2480 void wxDataViewMainWindow::RefreshRows( unsigned int from, unsigned int to )
2481 {
2482     if (from > to)
2483     {
2484         unsigned int tmp = to;
2485         to = from;
2486         from = tmp;
2487     }
2488
2489     wxRect rect( 0, GetLineStart( from ), GetEndOfLastCol(), GetLineStart( (to-from+1) ) );
2490     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2491
2492     wxSize client_size = GetClientSize();
2493     wxRect client_rect( 0, 0, client_size.x, client_size.y );
2494     wxRect intersect_rect = client_rect.Intersect( rect );
2495     if (intersect_rect.width > 0)
2496         Refresh( true, &intersect_rect );
2497 }
2498
2499 void wxDataViewMainWindow::RefreshRowsAfter( unsigned int firstRow )
2500 {
2501     wxSize client_size = GetClientSize();
2502     int start = GetLineStart( firstRow );
2503     m_owner->CalcScrolledPosition( start, 0, &start, NULL );
2504     if (start > client_size.y) return;
2505
2506     wxRect rect( 0, start, client_size.x, client_size.y - start );
2507
2508     Refresh( true, &rect );
2509 }
2510
2511 void wxDataViewMainWindow::OnArrowChar(unsigned int newCurrent, const wxKeyEvent& event)
2512 {
2513     wxCHECK_RET( newCurrent < GetRowCount(),
2514                 wxT("invalid item index in OnArrowChar()") );
2515
2516     // if there is no selection, we cannot move it anywhere
2517     if (!HasCurrentRow())
2518         return;
2519
2520     unsigned int oldCurrent = m_currentRow;
2521
2522     // in single selection we just ignore Shift as we can't select several
2523     // items anyhow
2524     if ( event.ShiftDown() && !IsSingleSel() )
2525     {
2526         RefreshRow( oldCurrent );
2527
2528         ChangeCurrentRow( newCurrent );
2529
2530         // select all the items between the old and the new one
2531         if ( oldCurrent > newCurrent )
2532         {
2533             newCurrent = oldCurrent;
2534             oldCurrent = m_currentRow;
2535         }
2536
2537         SelectRows( oldCurrent, newCurrent, true );
2538         if (oldCurrent!=newCurrent)
2539             SendSelectionChangedEvent(GetItemByRow(m_selection[0]));
2540     }
2541     else // !shift
2542     {
2543         RefreshRow( oldCurrent );
2544
2545         // all previously selected items are unselected unless ctrl is held
2546         if ( !event.ControlDown() )
2547             SelectAllRows(false);
2548
2549         ChangeCurrentRow( newCurrent );
2550
2551         if ( !event.ControlDown() )
2552         {
2553             SelectRow( m_currentRow, true );
2554             SendSelectionChangedEvent(GetItemByRow(m_currentRow));
2555         }
2556         else
2557             RefreshRow( m_currentRow );
2558     }
2559
2560     GetOwner()->EnsureVisible( m_currentRow, -1 );
2561 }
2562
2563 wxRect wxDataViewMainWindow::GetLineRect( unsigned int row ) const
2564 {
2565     wxRect rect;
2566     rect.x = 0;
2567     rect.y = GetLineStart( row );
2568     rect.width = GetEndOfLastCol();
2569     rect.height = GetLineHeight( row );
2570
2571     return rect;
2572 }
2573
2574 int wxDataViewMainWindow::GetLineStart( unsigned int row ) const
2575 {
2576     const wxDataViewModel *model = GetOwner()->GetModel();
2577
2578     if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
2579     {
2580         // TODO make more efficient
2581
2582         int start = 0;
2583
2584         unsigned int r;
2585         for (r = 0; r < row; r++)
2586         {
2587             const wxDataViewTreeNode* node = GetTreeNodeByRow(r);
2588             if (!node) return start;
2589
2590             wxDataViewItem item = node->GetItem();
2591
2592             if (node && !node->HasChildren())
2593             {
2594                 // Yes, if the node does not have any child, it must be a leaf which
2595                 // mean that it is a temporarily created by GetTreeNodeByRow
2596                 wxDELETE(node);
2597             }
2598
2599             unsigned int cols = GetOwner()->GetColumnCount();
2600             unsigned int col;
2601             int height = m_lineHeight;
2602             for (col = 0; col < cols; col++)
2603             {
2604                 const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2605                 if (column->IsHidden())
2606                     continue;      // skip it!
2607
2608                 if ((col != 0) &&
2609                     model->IsContainer(item) &&
2610                     !model->HasContainerColumns(item))
2611                     continue;      // skip it!
2612
2613                 wxDataViewRenderer *renderer =
2614                     const_cast<wxDataViewRenderer*>(column->GetRenderer());
2615                 renderer->PrepareForItem(model, item, column->GetModelColumn());
2616
2617                 height = wxMax( height, renderer->GetSize().y );
2618             }
2619
2620             start += height;
2621         }
2622
2623         return start;
2624     }
2625     else
2626     {
2627         return row * m_lineHeight;
2628     }
2629 }
2630
2631 int wxDataViewMainWindow::GetLineAt( unsigned int y ) const
2632 {
2633     const wxDataViewModel *model = GetOwner()->GetModel();
2634
2635     // check for the easy case first
2636     if ( !GetOwner()->HasFlag(wxDV_VARIABLE_LINE_HEIGHT) )
2637         return y / m_lineHeight;
2638
2639     // TODO make more efficient
2640     unsigned int row = 0;
2641     unsigned int yy = 0;
2642     for (;;)
2643     {
2644         const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
2645         if (!node)
2646         {
2647             // not really correct...
2648             return row + ((y-yy) / m_lineHeight);
2649         }
2650
2651         wxDataViewItem item = node->GetItem();
2652
2653         if (node && !node->HasChildren())
2654         {
2655             // Yes, if the node does not have any child, it must be a leaf which
2656             // mean that it is a temporarily created by GetTreeNodeByRow
2657             wxDELETE(node);
2658         }
2659
2660         unsigned int cols = GetOwner()->GetColumnCount();
2661         unsigned int col;
2662         int height = m_lineHeight;
2663         for (col = 0; col < cols; col++)
2664         {
2665             const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2666             if (column->IsHidden())
2667                 continue;      // skip it!
2668
2669             if ((col != 0) &&
2670                 model->IsContainer(item) &&
2671                 !model->HasContainerColumns(item))
2672                 continue;      // skip it!
2673
2674             wxDataViewRenderer *renderer =
2675                 const_cast<wxDataViewRenderer*>(column->GetRenderer());
2676             renderer->PrepareForItem(model, item, column->GetModelColumn());
2677
2678             height = wxMax( height, renderer->GetSize().y );
2679         }
2680
2681         yy += height;
2682         if (y < yy)
2683             return row;
2684
2685         row++;
2686     }
2687 }
2688
2689 int wxDataViewMainWindow::GetLineHeight( unsigned int row ) const
2690 {
2691     const wxDataViewModel *model = GetOwner()->GetModel();
2692
2693     if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
2694     {
2695         wxASSERT( !IsVirtualList() );
2696
2697         const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
2698         // wxASSERT( node );
2699         if (!node) return m_lineHeight;
2700
2701         wxDataViewItem item = node->GetItem();
2702
2703         if (node && !node->HasChildren())
2704         {
2705                 // Yes, if the node does not have any child, it must be a leaf which
2706                 // mean that it is a temporarily created by GetTreeNodeByRow
2707             wxDELETE(node);
2708         }
2709
2710         int height = m_lineHeight;
2711
2712         unsigned int cols = GetOwner()->GetColumnCount();
2713         unsigned int col;
2714         for (col = 0; col < cols; col++)
2715         {
2716             const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2717             if (column->IsHidden())
2718                 continue;      // skip it!
2719
2720             if ((col != 0) &&
2721                 model->IsContainer(item) &&
2722                 !model->HasContainerColumns(item))
2723                 continue;      // skip it!
2724
2725             wxDataViewRenderer *renderer =
2726                 const_cast<wxDataViewRenderer*>(column->GetRenderer());
2727             renderer->PrepareForItem(model, item, column->GetModelColumn());
2728
2729             height = wxMax( height, renderer->GetSize().y );
2730         }
2731
2732         return height;
2733     }
2734     else
2735     {
2736         return m_lineHeight;
2737     }
2738 }
2739
2740 class RowToItemJob: public DoJob
2741 {
2742 public:
2743     RowToItemJob( unsigned int row , int current )
2744         { this->row = row; this->current = current; }
2745     virtual ~RowToItemJob() {}
2746
2747     virtual int operator() ( wxDataViewTreeNode * node )
2748     {
2749         current ++;
2750         if( current == static_cast<int>(row))
2751         {
2752             ret = node->GetItem();
2753             return DoJob::OK;
2754         }
2755
2756         if( node->GetSubTreeCount() + current < static_cast<int>(row) )
2757         {
2758             current += node->GetSubTreeCount();
2759             return  DoJob::IGR;
2760         }
2761         else
2762         {
2763             // If the current has no child node, we can find the desired item of the row
2764             // number directly.
2765             // This if can speed up finding in some case, and will has a very good effect
2766             // when it comes to list view
2767             if( node->GetNodes().GetCount() == 0)
2768             {
2769                 int index = static_cast<int>(row) - current - 1;
2770                 ret = wxDataViewItem(node->GetChildren().Item( index ));
2771                 return DoJob::OK;
2772             }
2773             return DoJob::CONT;
2774         }
2775     }
2776
2777     virtual int operator() ( void * n )
2778     {
2779         current ++;
2780         if( current == static_cast<int>(row))
2781         {
2782             ret = wxDataViewItem( n );
2783             return DoJob::OK;
2784         }
2785         return DoJob::CONT;
2786     }
2787
2788     wxDataViewItem GetResult() const
2789         { return ret; }
2790
2791 private:
2792     unsigned int row;
2793     int current;
2794     wxDataViewItem ret;
2795 };
2796
2797 wxDataViewItem wxDataViewMainWindow::GetItemByRow(unsigned int row) const
2798 {
2799     if (IsVirtualList())
2800     {
2801         return wxDataViewItem( wxUIntToPtr(row+1) );
2802     }
2803     else
2804     {
2805         RowToItemJob job( row, -2 );
2806         Walker( m_root , job );
2807         return job.GetResult();
2808     }
2809 }
2810
2811 class RowToTreeNodeJob: public DoJob
2812 {
2813 public:
2814     RowToTreeNodeJob( unsigned int row , int current, wxDataViewTreeNode * node )
2815     {
2816         this->row = row;
2817         this->current = current;
2818         ret = NULL;
2819         parent = node;
2820     }
2821     virtual ~RowToTreeNodeJob(){ }
2822
2823     virtual int operator() ( wxDataViewTreeNode * node )
2824     {
2825         current ++;
2826         if( current == static_cast<int>(row))
2827         {
2828             ret = node;
2829             return DoJob::OK;
2830         }
2831
2832         if( node->GetSubTreeCount() + current < static_cast<int>(row) )
2833         {
2834             current += node->GetSubTreeCount();
2835             return  DoJob::IGR;
2836         }
2837         else
2838         {
2839             parent = node;
2840
2841             // If the current node has no children, we can find the desired item of the
2842             // row number directly.
2843             // This if can speed up finding in some case, and will have a very good
2844             // effect for list views.
2845             if( node->GetNodes().GetCount() == 0)
2846             {
2847                 int index = static_cast<int>(row) - current - 1;
2848                 void * n = node->GetChildren().Item( index );
2849                 ret = new wxDataViewTreeNode( parent );
2850                 ret->SetItem( wxDataViewItem( n ));
2851                 ret->SetHasChildren(false);
2852                 return DoJob::OK;
2853             }
2854             return DoJob::CONT;
2855         }
2856     }
2857
2858     virtual int operator() ( void * n )
2859     {
2860         current ++;
2861         if( current == static_cast<int>(row))
2862         {
2863             ret = new wxDataViewTreeNode( parent );
2864             ret->SetItem( wxDataViewItem( n ));
2865             ret->SetHasChildren(false);
2866             return DoJob::OK;
2867         }
2868
2869         return DoJob::CONT;
2870     }
2871
2872     wxDataViewTreeNode * GetResult() const
2873         { return ret; }
2874
2875 private:
2876     unsigned int row;
2877     int current;
2878     wxDataViewTreeNode * ret;
2879     wxDataViewTreeNode * parent;
2880 };
2881
2882 wxDataViewTreeNode * wxDataViewMainWindow::GetTreeNodeByRow(unsigned int row) const
2883 {
2884     wxASSERT( !IsVirtualList() );
2885
2886     RowToTreeNodeJob job( row , -2, m_root );
2887     Walker( m_root , job );
2888     return job.GetResult();
2889 }
2890
2891 wxDataViewEvent wxDataViewMainWindow::SendExpanderEvent( wxEventType type,
2892                                                          const wxDataViewItem & item )
2893 {
2894     wxWindow *parent = GetParent();
2895     wxDataViewEvent le(type, parent->GetId());
2896
2897     le.SetEventObject(parent);
2898     le.SetModel(GetOwner()->GetModel());
2899     le.SetItem( item );
2900
2901     parent->GetEventHandler()->ProcessEvent(le);
2902     return le;
2903 }
2904
2905 bool wxDataViewMainWindow::IsExpanded( unsigned int row ) const
2906 {
2907     if (IsList())
2908         return false;
2909
2910     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2911     if (!node)
2912         return false;
2913
2914     if (!node->HasChildren())
2915     {
2916         delete node;
2917         return false;
2918     }
2919
2920     return node->IsOpen();
2921 }
2922
2923 bool wxDataViewMainWindow::HasChildren( unsigned int row ) const
2924 {
2925     if (IsList())
2926         return false;
2927
2928     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2929     if (!node)
2930         return false;
2931
2932     if (!node->HasChildren())
2933     {
2934         delete node;
2935         return false;
2936     }
2937
2938     return true;
2939 }
2940
2941 void wxDataViewMainWindow::Expand( unsigned int row )
2942 {
2943     if (IsList())
2944         return;
2945
2946     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2947     if (!node)
2948         return;
2949
2950     if (!node->HasChildren())
2951     {
2952         delete node;
2953         return;
2954     }
2955
2956             if (!node->IsOpen())
2957             {
2958                 wxDataViewEvent e =
2959                     SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, node->GetItem());
2960
2961                 // Check if the user prevent expanding
2962                 if( !e.IsAllowed() )
2963                     return;
2964
2965                 node->ToggleOpen();
2966
2967                 // build the children of current node
2968                 if( node->GetChildrenNumber() == 0 )
2969                 {
2970                     SortPrepare();
2971                     ::BuildTreeHelper(GetOwner()->GetModel(), node->GetItem(), node);
2972                 }
2973
2974                 // By expanding the node all row indices that are currently in the selection list
2975                 // and are greater than our node have become invalid. So we have to correct that now.
2976                 const unsigned rowAdjustment = node->GetSubTreeCount();
2977                 for(unsigned i=0; i<m_selection.size(); ++i)
2978                 {
2979                     const unsigned testRow = m_selection[i];
2980                     // all rows above us are not affected, so skip them
2981                     if(testRow <= row)
2982                         continue;
2983
2984                     m_selection[i] += rowAdjustment;
2985                 }
2986
2987                 if(m_currentRow > row)
2988                     ChangeCurrentRow(m_currentRow + rowAdjustment);
2989
2990                 m_count = -1;
2991                 UpdateDisplay();
2992                 // Send the expanded event
2993                 SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED,node->GetItem());
2994             }
2995 }
2996
2997 void wxDataViewMainWindow::Collapse(unsigned int row)
2998 {
2999     if (IsList())
3000         return;
3001
3002     wxDataViewTreeNode *node = GetTreeNodeByRow(row);
3003     if (!node)
3004         return;
3005
3006     if (!node->HasChildren())
3007     {
3008         delete node;
3009         return;
3010     }
3011
3012         if (node->IsOpen())
3013         {
3014             wxDataViewEvent e =
3015                 SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING,node->GetItem());
3016             if( !e.IsAllowed() )
3017                 return;
3018
3019             // Find out if there are selected items below the current node.
3020             bool selectCollapsingRow = false;
3021             const unsigned rowAdjustment = node->GetSubTreeCount();
3022             unsigned maxRowToBeTested = row + rowAdjustment;
3023             for(unsigned i=0; i<m_selection.size(); ++i)
3024             {
3025                 const unsigned testRow = m_selection[i];
3026                 if(testRow > row && testRow <= maxRowToBeTested)
3027                 {
3028                     selectCollapsingRow = true;
3029                     // get out as soon as we have found a node that is selected
3030                     break;
3031                 }
3032             }
3033
3034             node->ToggleOpen();
3035
3036             // If the node to be closed has selected items the user won't see those any longer.
3037             // We select the collapsing node in this case.
3038             if(selectCollapsingRow)
3039             {
3040                 SelectAllRows(false);
3041                 ChangeCurrentRow(row);
3042                 SelectRow(row, true);
3043                 SendSelectionChangedEvent(GetItemByRow(row));
3044             }
3045             else
3046             {
3047                 // if there were no selected items below our node we still need to "fix" the
3048                 // selection list to adjust for the changing of the row indices.
3049                 // We actually do the opposite of what we are doing in Expand().
3050                 for(unsigned i=0; i<m_selection.size(); ++i)
3051                 {
3052                     const unsigned testRow = m_selection[i];
3053                     // all rows above us are not affected, so skip them
3054                     if(testRow <= row)
3055                         continue;
3056
3057                     m_selection[i] -= rowAdjustment;
3058                 }
3059
3060                 // if the "current row" is being collapsed away we change it to the current row ;-)
3061                 if(m_currentRow > row && m_currentRow <= maxRowToBeTested)
3062                     ChangeCurrentRow(row);
3063                 else if(m_currentRow > row)
3064                     ChangeCurrentRow(m_currentRow - rowAdjustment);
3065             }
3066
3067             m_count = -1;
3068             UpdateDisplay();
3069             SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED,node->GetItem());
3070         }
3071 }
3072
3073 wxDataViewTreeNode * wxDataViewMainWindow::FindNode( const wxDataViewItem & item )
3074 {
3075     const wxDataViewModel * model = GetOwner()->GetModel();
3076     if( model == NULL )
3077         return NULL;
3078
3079     if (!item.IsOk())
3080         return m_root;
3081
3082     // Compose the parent-chain for the item we are looking for
3083     wxVector<wxDataViewItem> parentChain;
3084     wxDataViewItem it( item );
3085     while( it.IsOk() )
3086     {
3087         parentChain.push_back(it);
3088         it = model->GetParent(it);
3089     }
3090
3091     // Find the item along the parent-chain.
3092     // This algorithm is designed to speed up the node-finding method
3093     wxDataViewTreeNode* node = m_root;
3094     for( unsigned iter = parentChain.size()-1; ; --iter )
3095     {
3096         if( node->HasChildren() )
3097         {
3098             if( node->GetChildrenNumber() == 0 )
3099             {
3100                 SortPrepare();
3101                 ::BuildTreeHelper(model, node->GetItem(), node);
3102             }
3103
3104             const wxDataViewTreeNodes& nodes = node->GetNodes();
3105             bool found = false;
3106
3107             for (unsigned i = 0; i < nodes.GetCount(); ++i)
3108             {
3109                 wxDataViewTreeNode* currentNode = nodes[i];
3110                 if (currentNode->GetItem() == parentChain[iter])
3111                 {
3112                     if (currentNode->GetItem() == item)
3113                         return currentNode;
3114
3115                     node = currentNode;
3116                     found = true;
3117                     break;
3118                 }
3119             }
3120             if (!found)
3121                 return NULL;
3122         }
3123         else
3124             return NULL;
3125
3126         if ( !iter )
3127             break;
3128     }
3129     return NULL;
3130 }
3131
3132 void wxDataViewMainWindow::HitTest( const wxPoint & point, wxDataViewItem & item,
3133                                     wxDataViewColumn* &column )
3134 {
3135     wxDataViewColumn *col = NULL;
3136     unsigned int cols = GetOwner()->GetColumnCount();
3137     unsigned int colnum = 0;
3138     int x, y;
3139     m_owner->CalcUnscrolledPosition( point.x, point.y, &x, &y );
3140     for (unsigned x_start = 0; colnum < cols; colnum++)
3141     {
3142         col = GetOwner()->GetColumnAt(colnum);
3143         if (col->IsHidden())
3144             continue;      // skip it!
3145
3146         unsigned int w = col->GetWidth();
3147         if (x_start+w >= (unsigned int)x)
3148             break;
3149
3150         x_start += w;
3151     }
3152
3153     column = col;
3154     item = GetItemByRow( GetLineAt( y ) );
3155 }
3156
3157 wxRect wxDataViewMainWindow::GetItemRect( const wxDataViewItem & item,
3158                                           const wxDataViewColumn* column )
3159 {
3160     int xpos = 0;
3161     int width = 0;
3162
3163     unsigned int cols = GetOwner()->GetColumnCount();
3164     // If column is null the loop will compute the combined width of all columns.
3165     // Otherwise, it will compute the x position of the column we are looking for.
3166     for (unsigned int i = 0; i < cols; i++)
3167     {
3168         wxDataViewColumn* col = GetOwner()->GetColumnAt( i );
3169
3170         if (col == column)
3171             break;
3172
3173         if (col->IsHidden())
3174             continue;      // skip it!
3175
3176         xpos += col->GetWidth();
3177         width += col->GetWidth();
3178     }
3179
3180     if(column != 0)
3181     {
3182         // If we have a column, we need can get its width directly.
3183         if(column->IsHidden())
3184             width = 0;
3185         else
3186             width = column->GetWidth();
3187
3188     }
3189     else
3190     {
3191         // If we have no column, we reset the x position back to zero.
3192         xpos = 0;
3193     }
3194
3195     // we have to take an expander column into account and compute its indentation
3196     // to get the correct x position where the actual text is
3197     int indent = 0;
3198     int row = GetRowByItem(item);
3199     if (!IsList() && (column == 0 || GetOwner()->GetExpanderColumn() == column) )
3200     {
3201         wxDataViewTreeNode* node = GetTreeNodeByRow(row);
3202         indent = GetOwner()->GetIndent() * node->GetIndentLevel();
3203         indent = indent + m_lineHeight; // use m_lineHeight as the width of the expander
3204
3205         if(!node->HasChildren())
3206             delete node;
3207     }
3208
3209     wxRect itemRect( xpos + indent,
3210                      GetLineStart( row ),
3211                      width - indent,
3212                      GetLineHeight( row ) );
3213
3214     GetOwner()->CalcScrolledPosition(  itemRect.x,  itemRect.y,
3215                                       &itemRect.x, &itemRect.y );
3216
3217     return itemRect;
3218 }
3219
3220 int wxDataViewMainWindow::RecalculateCount()
3221 {
3222     if (IsVirtualList())
3223     {
3224         wxDataViewVirtualListModel *list_model =
3225             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
3226
3227         return list_model->GetCount();
3228     }
3229     else
3230     {
3231         return m_root->GetSubTreeCount();
3232     }
3233 }
3234
3235 class ItemToRowJob : public DoJob
3236 {
3237 public:
3238     ItemToRowJob(const wxDataViewItem& item_, wxVector<wxDataViewItem>::reverse_iterator iter)
3239         : m_iter(iter),
3240         item(item_)
3241     {
3242         ret = -1;
3243     }
3244
3245     // Maybe binary search will help to speed up this process
3246     virtual int operator() ( wxDataViewTreeNode * node)
3247     {
3248         ret ++;
3249         if( node->GetItem() == item )
3250         {
3251             return DoJob::OK;
3252         }
3253
3254         if( node->GetItem() == *m_iter )
3255         {
3256             m_iter++;
3257             return DoJob::CONT;
3258         }
3259         else
3260         {
3261             ret += node->GetSubTreeCount();
3262             return DoJob::IGR;
3263         }
3264
3265     }
3266
3267     virtual int operator() ( void * n )
3268     {
3269         ret ++;
3270         if( n == item.GetID() )
3271             return DoJob::OK;
3272         return DoJob::CONT;
3273     }
3274
3275     // the row number is begin from zero
3276     int GetResult() const
3277         { return ret -1; }
3278
3279 private:
3280     wxVector<wxDataViewItem>::reverse_iterator m_iter;
3281     wxDataViewItem item;
3282     int ret;
3283
3284 };
3285
3286 int wxDataViewMainWindow::GetRowByItem(const wxDataViewItem & item) const
3287 {
3288     const wxDataViewModel * model = GetOwner()->GetModel();
3289     if( model == NULL )
3290         return -1;
3291
3292     if (IsVirtualList())
3293     {
3294         return wxPtrToUInt( item.GetID() ) -1;
3295     }
3296     else
3297     {
3298         if( !item.IsOk() )
3299             return -1;
3300
3301         // Compose the parent-chain of the item we are looking for
3302         wxVector<wxDataViewItem> parentChain;
3303         wxDataViewItem it( item );
3304         while( it.IsOk() )
3305         {
3306             parentChain.push_back(it);
3307             it = model->GetParent(it);
3308         }
3309
3310         // add an 'invalid' item to represent our 'invisible' root node
3311         parentChain.push_back(wxDataViewItem());
3312
3313         // the parent chain was created by adding the deepest parent first.
3314         // so if we want to start at the root node, we have to iterate backwards through the vector
3315         ItemToRowJob job( item, parentChain.rbegin() );
3316         Walker( m_root, job );
3317         return job.GetResult();
3318     }
3319 }
3320
3321 static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
3322                              wxDataViewTreeNode * node)
3323 {
3324     if( !model->IsContainer( item ) )
3325         return;
3326
3327     wxDataViewItemArray children;
3328     unsigned int num = model->GetChildren( item, children);
3329
3330     unsigned int index = 0;
3331     while( index < num )
3332     {
3333         if( model->IsContainer( children[index] ) )
3334         {
3335             wxDataViewTreeNode * n = new wxDataViewTreeNode( node );
3336             n->SetItem(children[index]);
3337             n->SetHasChildren( true );
3338             node->AddNode( n );
3339         }
3340         else
3341         {
3342             node->AddLeaf( children[index].GetID() );
3343         }
3344         index ++;
3345     }
3346     node->SetSubTreeCount( num );
3347     wxDataViewTreeNode * n = node->GetParent();
3348     if( n != NULL)
3349         n->ChangeSubTreeCount(num);
3350
3351 }
3352
3353 void wxDataViewMainWindow::BuildTree(wxDataViewModel * model)
3354 {
3355     DestroyTree();
3356
3357     if (GetOwner()->GetModel()->IsVirtualListModel())
3358     {
3359         m_count = -1;
3360         return;
3361     }
3362
3363     m_root = new wxDataViewTreeNode( NULL );
3364     m_root->SetHasChildren(true);
3365
3366     // First we define a invalid item to fetch the top-level elements
3367     wxDataViewItem item;
3368     SortPrepare();
3369     BuildTreeHelper( model, item, m_root);
3370     m_count = -1;
3371 }
3372
3373 static void DestroyTreeHelper( wxDataViewTreeNode * node )
3374 {
3375     if( node->GetNodeNumber() != 0 )
3376     {
3377         int len = node->GetNodeNumber();
3378         wxDataViewTreeNodes& nodes = node->GetNodes();
3379         for (int i = 0; i < len; i++)
3380             DestroyTreeHelper(nodes[i]);
3381     }
3382     delete node;
3383 }
3384
3385 void wxDataViewMainWindow::DestroyTree()
3386 {
3387     if (!IsVirtualList())
3388     {
3389         ::DestroyTreeHelper(m_root);
3390             m_count = 0;
3391             m_root = NULL;
3392     }
3393 }
3394
3395 void wxDataViewMainWindow::OnChar( wxKeyEvent &event )
3396 {
3397     wxWindow * const parent = GetParent();
3398
3399     // propagate the char event upwards
3400     wxKeyEvent eventForParent(event);
3401     eventForParent.SetEventObject(parent);
3402     if ( parent->ProcessWindowEvent(eventForParent) )
3403         return;
3404
3405     if ( parent->HandleAsNavigationKey(event) )
3406         return;
3407
3408     // no item -> nothing to do
3409     if (!HasCurrentRow())
3410     {
3411         event.Skip();
3412         return;
3413     }
3414
3415     // don't use m_linesPerPage directly as it might not be computed yet
3416     const int pageSize = GetCountPerPage();
3417     wxCHECK_RET( pageSize, wxT("should have non zero page size") );
3418
3419     switch ( event.GetKeyCode() )
3420     {
3421         case WXK_RETURN:
3422             {
3423                 wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED,
3424                                    parent->GetId());
3425                 le.SetItem( GetItemByRow(m_currentRow) );
3426                 le.SetEventObject(parent);
3427                 le.SetModel(GetOwner()->GetModel());
3428
3429                 parent->GetEventHandler()->ProcessEvent(le);
3430             }
3431             break;
3432
3433         case WXK_UP:
3434             if ( m_currentRow > 0 )
3435                 OnArrowChar( m_currentRow - 1, event );
3436             break;
3437
3438         case WXK_DOWN:
3439             if ( m_currentRow + 1 < GetRowCount() )
3440                 OnArrowChar( m_currentRow + 1, event );
3441             break;
3442         // Add the process for tree expanding/collapsing
3443         case WXK_LEFT:
3444         {
3445             if (IsList())
3446                break;
3447
3448             wxDataViewTreeNode* node = GetTreeNodeByRow(m_currentRow);
3449             if (!node)
3450                 break;
3451
3452             if (node->HasChildren() && node->IsOpen())
3453             {
3454                 Collapse(m_currentRow);
3455             }
3456             else    // if the node is already closed we move the selection to its parent
3457             {
3458                 wxDataViewTreeNode *parent_node = node->GetParent();
3459
3460                 if(!node->HasChildren())
3461                     delete node;
3462
3463                 if (parent_node)
3464                 {
3465                     int parent = GetRowByItem( parent_node->GetItem() );
3466                     if ( parent >= 0 )
3467                     {
3468                         unsigned int row = m_currentRow;
3469                         SelectRow( row, false);
3470                         SelectRow( parent, true );
3471                         ChangeCurrentRow( parent );
3472                         GetOwner()->EnsureVisible( parent, -1 );
3473                         SendSelectionChangedEvent( parent_node->GetItem() );
3474                     }
3475                 }
3476             }
3477             break;
3478         }
3479         case WXK_RIGHT:
3480         {
3481             if (!IsExpanded( m_currentRow ))
3482                 Expand( m_currentRow );
3483             else
3484             {
3485                 unsigned int row = m_currentRow;
3486                 SelectRow( row, false );
3487                 SelectRow( row + 1, true );
3488                 ChangeCurrentRow( row + 1 );
3489                 GetOwner()->EnsureVisible( row + 1, -1 );
3490                 SendSelectionChangedEvent( GetItemByRow(row+1) );
3491             }
3492             break;
3493         }
3494         case WXK_END:
3495         {
3496             if (!IsEmpty())
3497                 OnArrowChar( GetRowCount() - 1, event );
3498             break;
3499         }
3500         case WXK_HOME:
3501             if (!IsEmpty())
3502                 OnArrowChar( 0, event );
3503             break;
3504
3505         case WXK_PAGEUP:
3506             {
3507                 int steps = pageSize - 1;
3508                 int index = m_currentRow - steps;
3509                 if (index < 0)
3510                     index = 0;
3511
3512                 OnArrowChar( index, event );
3513             }
3514             break;
3515
3516         case WXK_PAGEDOWN:
3517             {
3518                 int steps = pageSize - 1;
3519                 unsigned int index = m_currentRow + steps;
3520                 unsigned int count = GetRowCount();
3521                 if ( index >= count )
3522                     index = count - 1;
3523
3524                 OnArrowChar( index, event );
3525             }
3526             break;
3527
3528         case WXK_F2:
3529             {
3530                 if(m_selection.size() == 1)
3531                 {
3532                     // TODO: we need to revise that when we have a concept for a 'current column'
3533                     GetOwner()->StartEditor(GetItemByRow(m_selection[0]), 0);
3534                 }
3535             }
3536             break;
3537
3538         default:
3539             event.Skip();
3540     }
3541 }
3542
3543 void wxDataViewMainWindow::OnMouse( wxMouseEvent &event )
3544 {
3545     if (event.GetEventType() == wxEVT_MOUSEWHEEL)
3546     {
3547         // let the base handle mouse wheel events.
3548         event.Skip();
3549         return;
3550     }
3551
3552     // set the focus to ourself if any of the mouse buttons are pressed
3553     if(event.ButtonDown() && !HasFocus())
3554         SetFocus();
3555
3556     int x = event.GetX();
3557     int y = event.GetY();
3558     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
3559     wxDataViewColumn *col = NULL;
3560
3561     int xpos = 0;
3562     unsigned int cols = GetOwner()->GetColumnCount();
3563     unsigned int i;
3564     for (i = 0; i < cols; i++)
3565     {
3566         wxDataViewColumn *c = GetOwner()->GetColumnAt( i );
3567         if (c->IsHidden())
3568             continue;      // skip it!
3569
3570         if (x < xpos + c->GetWidth())
3571         {
3572             col = c;
3573             break;
3574         }
3575         xpos += c->GetWidth();
3576     }
3577     if (!col)
3578     {
3579         event.Skip();
3580         return;
3581     }
3582
3583     wxDataViewRenderer *cell = col->GetRenderer();
3584     unsigned int current = GetLineAt( y );
3585     if ((current >= GetRowCount()) || (x > GetEndOfLastCol()))
3586     {
3587         // Unselect all if below the last row ?
3588         event.Skip();
3589         return;
3590     }
3591
3592     // Test whether the mouse is hovering over the expander (a.k.a tree "+"
3593     // button) and also determine the offset of the real cell start, skipping
3594     // the indentation and the expander itself.
3595     bool hoverOverExpander = false;
3596     int expanderOffset = 0;
3597     if ((!IsList()) && (GetOwner()->GetExpanderColumn() == col))
3598     {
3599         wxDataViewTreeNode * node = GetTreeNodeByRow(current);
3600         if( node!=NULL && node->HasChildren() )
3601         {
3602             int indent = node->GetIndentLevel();
3603             indent = GetOwner()->GetIndent()*indent;
3604
3605             // we make the rectangle we are looking in a bit bigger than the actual
3606             // visual expander so the user can hit that little thing reliably
3607             wxRect rect( xpos + indent,
3608                         GetLineStart( current ) + (GetLineHeight(current) - m_lineHeight)/2,
3609                         m_lineHeight, m_lineHeight);
3610
3611             expanderOffset = indent + m_lineHeight;
3612
3613             if( rect.Contains(x, y) )
3614             {
3615                 // So the mouse is over the expander
3616                 hoverOverExpander = true;
3617                 if (m_underMouse && m_underMouse != node)
3618                 {
3619                     // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
3620                     RefreshRow(GetRowByItem(m_underMouse->GetItem()));
3621                 }
3622                 if (m_underMouse != node)
3623                 {
3624                     // wxLogMessage("Do the row: %d", current);
3625                     RefreshRow(current);
3626                 }
3627                 m_underMouse = node;
3628             }
3629         }
3630         if (node!=NULL && !node->HasChildren())
3631             delete node;
3632     }
3633     if (!hoverOverExpander)
3634     {
3635         if (m_underMouse != NULL)
3636         {
3637             // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
3638             RefreshRow(GetRowByItem(m_underMouse->GetItem()));
3639             m_underMouse = NULL;
3640         }
3641     }
3642
3643     wxDataViewModel *model = GetOwner()->GetModel();
3644
3645 #if wxUSE_DRAG_AND_DROP
3646     if (event.Dragging())
3647     {
3648         if (m_dragCount == 0)
3649         {
3650             // we have to report the raw, physical coords as we want to be
3651             // able to call HitTest(event.m_pointDrag) from the user code to
3652             // get the item being dragged
3653             m_dragStart = event.GetPosition();
3654         }
3655
3656         m_dragCount++;
3657
3658         if (m_dragCount != 3)
3659             return;
3660
3661         if (event.LeftIsDown())
3662         {
3663             m_owner->CalcUnscrolledPosition( m_dragStart.x, m_dragStart.y,
3664                                              &m_dragStart.x, &m_dragStart.y );
3665             unsigned int drag_item_row = GetLineAt( m_dragStart.y );
3666             wxDataViewItem item = GetItemByRow( drag_item_row );
3667
3668             // Notify cell about drag
3669             wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_BEGIN_DRAG, m_owner->GetId() );
3670             event.SetEventObject( m_owner );
3671             event.SetItem( item );
3672             event.SetModel( model );
3673             if (!m_owner->HandleWindowEvent( event ))
3674                 return;
3675
3676             if (!event.IsAllowed())
3677                 return;
3678
3679             wxDataObject *obj = event.GetDataObject();
3680             if (!obj)
3681                 return;
3682
3683             wxDataViewDropSource drag( this, drag_item_row );
3684             drag.SetData( *obj );
3685             /* wxDragResult res = */ drag.DoDragDrop();
3686             delete obj;
3687         }
3688         return;
3689     }
3690     else
3691     {
3692         m_dragCount = 0;
3693     }
3694 #endif // wxUSE_DRAG_AND_DROP
3695
3696     bool simulateClick = false;
3697
3698     if (event.ButtonDClick())
3699     {
3700         m_renameTimer->Stop();
3701         m_lastOnSame = false;
3702     }
3703
3704     wxDataViewItem item = GetItemByRow(current);
3705     bool ignore_other_columns =
3706         ((GetOwner()->GetExpanderColumn() != col) &&
3707         (model->IsContainer(item)) &&
3708         (!model->HasContainerColumns(item)));
3709
3710     if (event.LeftDClick())
3711     {
3712         if(hoverOverExpander)
3713         {
3714             // a double click on the expander will be converted into a "simulated" normal click
3715             simulateClick = true;
3716         }
3717         else if ( current == m_lineLastClicked )
3718         {
3719             if ((!ignore_other_columns) && (cell->GetMode() == wxDATAVIEW_CELL_ACTIVATABLE))
3720             {
3721                 const unsigned colIdx = col->GetModelColumn();
3722
3723                 cell->PrepareForItem(model, item, colIdx);
3724
3725                 wxRect cell_rect( xpos, GetLineStart( current ),
3726                                 col->GetWidth(), GetLineHeight( current ) );
3727                 cell->WXOnActivate( cell_rect, model, item, colIdx );
3728             }
3729             else
3730             {
3731                 wxWindow *parent = GetParent();
3732                 wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED, parent->GetId());
3733                 le.SetItem( item );
3734                 le.SetColumn( col->GetModelColumn() );
3735                 le.SetDataViewColumn( col );
3736                 le.SetEventObject(parent);
3737                 le.SetModel(GetOwner()->GetModel());
3738
3739                 parent->GetEventHandler()->ProcessEvent(le);
3740             }
3741             return;
3742         }
3743         else
3744         {
3745             // The first click was on another item, so don't interpret this as
3746             // a double click, but as a simple click instead
3747             simulateClick = true;
3748         }
3749     }
3750
3751     if (event.LeftUp() && !hoverOverExpander)
3752     {
3753         if (m_lineSelectSingleOnUp != (unsigned int)-1)
3754         {
3755             // select single line
3756             SelectAllRows( false );
3757             SelectRow( m_lineSelectSingleOnUp, true );
3758             SendSelectionChangedEvent( GetItemByRow(m_lineSelectSingleOnUp) );
3759         }
3760
3761         // If the user click the expander, we do not do editing even if the column
3762         // with expander are editable
3763         if (m_lastOnSame && !ignore_other_columns)
3764         {
3765             if ((col == m_currentCol) && (current == m_currentRow) &&
3766                 (cell->GetMode() & wxDATAVIEW_CELL_EDITABLE) )
3767             {
3768                 m_renameTimer->Start( 100, true );
3769             }
3770         }
3771
3772         m_lastOnSame = false;
3773         m_lineSelectSingleOnUp = (unsigned int)-1;
3774     }
3775     else if(!event.LeftUp())
3776     {
3777         // This is necessary, because after a DnD operation in
3778         // from and to ourself, the up event is swallowed by the
3779         // DnD code. So on next non-up event (which means here and
3780         // now) m_lineSelectSingleOnUp should be reset.
3781         m_lineSelectSingleOnUp = (unsigned int)-1;
3782     }
3783
3784     if (event.RightDown())
3785     {
3786         m_lineBeforeLastClicked = m_lineLastClicked;
3787         m_lineLastClicked = current;
3788
3789         // If the item is already selected, do not update the selection.
3790         // Multi-selections should not be cleared if a selected item is clicked.
3791         if (!IsRowSelected(current))
3792         {
3793             SelectAllRows(false);
3794             const unsigned oldCurrent = m_currentRow;
3795             ChangeCurrentRow(current);
3796             SelectRow(m_currentRow,true);
3797             RefreshRow(oldCurrent);
3798             SendSelectionChangedEvent(GetItemByRow( m_currentRow ) );
3799         }
3800     }
3801     else if (event.RightUp())
3802     {
3803         wxVariant value;
3804         model->GetValue( value, item, col->GetModelColumn() );
3805         wxWindow *parent = GetParent();
3806         wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_CONTEXT_MENU, parent->GetId());
3807         le.SetItem( item );
3808         le.SetColumn( col->GetModelColumn() );
3809         le.SetDataViewColumn( col );
3810         le.SetEventObject(parent);
3811         le.SetModel(GetOwner()->GetModel());
3812         le.SetValue(value);
3813         parent->GetEventHandler()->ProcessEvent(le);
3814     }
3815     else if (event.MiddleDown())
3816     {
3817     }
3818
3819     if((event.LeftDown() || simulateClick) && hoverOverExpander)
3820     {
3821         wxDataViewTreeNode* node = GetTreeNodeByRow(current);
3822
3823         // hoverOverExpander being true tells us that our node must be
3824         // valid and have children.
3825         // So we don't need any extra checks.
3826         if( node->IsOpen() )
3827             Collapse(current);
3828         else
3829             Expand(current);
3830     }
3831     else if ((event.LeftDown() || simulateClick) && !hoverOverExpander)
3832     {
3833         m_lineBeforeLastClicked = m_lineLastClicked;
3834         m_lineLastClicked = current;
3835
3836         unsigned int oldCurrentRow = m_currentRow;
3837         bool oldWasSelected = IsRowSelected(m_currentRow);
3838
3839         bool cmdModifierDown = event.CmdDown();
3840         if ( IsSingleSel() || !(cmdModifierDown || event.ShiftDown()) )
3841         {
3842             if ( IsSingleSel() || !IsRowSelected(current) )
3843             {
3844                 SelectAllRows( false );
3845                 ChangeCurrentRow(current);
3846                 SelectRow(m_currentRow,true);
3847                 SendSelectionChangedEvent(GetItemByRow( m_currentRow ) );
3848             }
3849             else // multi sel & current is highlighted & no mod keys
3850             {
3851                 m_lineSelectSingleOnUp = current;
3852                 ChangeCurrentRow(current); // change focus
3853             }
3854         }
3855         else // multi sel & either ctrl or shift is down
3856         {
3857             if (cmdModifierDown)
3858             {
3859                 ChangeCurrentRow(current);
3860                 ReverseRowSelection(m_currentRow);
3861                 SendSelectionChangedEvent(GetItemByRow(m_currentRow));
3862             }
3863             else if (event.ShiftDown())
3864             {
3865                 ChangeCurrentRow(current);
3866
3867                 unsigned int lineFrom = oldCurrentRow,
3868                     lineTo = current;
3869
3870                 if ( lineTo < lineFrom )
3871                 {
3872                     lineTo = lineFrom;
3873                     lineFrom = m_currentRow;
3874                 }
3875
3876                 SelectRows(lineFrom, lineTo, true);
3877                 SendSelectionChangedEvent(GetItemByRow(m_selection[0]) );
3878             }
3879             else // !ctrl, !shift
3880             {
3881                 // test in the enclosing if should make it impossible
3882                 wxFAIL_MSG( wxT("how did we get here?") );
3883             }
3884         }
3885
3886         if (m_currentRow != oldCurrentRow)
3887             RefreshRow( oldCurrentRow );
3888
3889         wxDataViewColumn *oldCurrentCol = m_currentCol;
3890
3891         // Update selection here...
3892         m_currentCol = col;
3893
3894         m_lastOnSame = !simulateClick && ((col == oldCurrentCol) &&
3895                         (current == oldCurrentRow)) && oldWasSelected;
3896
3897         // Call LeftClick after everything else as under GTK+
3898         if (cell->GetMode() & wxDATAVIEW_CELL_ACTIVATABLE)
3899         {
3900             // notify cell about click
3901             cell->PrepareForItem(model, item, col->GetModelColumn());
3902
3903             wxRect cell_rect( xpos + expanderOffset,
3904                               GetLineStart( current ),
3905                               col->GetWidth() - expanderOffset,
3906                               GetLineHeight( current ) );
3907
3908             // Report position relative to the cell's custom area, i.e.
3909             // no the entire space as given by the control but the one
3910             // used by the renderer after calculation of alignment etc.
3911
3912             // adjust the rectangle ourselves to account for the alignment
3913             wxRect rectItem = cell_rect;
3914             const int align = cell->GetAlignment();
3915             if ( align != wxDVR_DEFAULT_ALIGNMENT )
3916             {
3917                 const wxSize size = cell->GetSize();
3918
3919                 if ( size.x >= 0 && size.x < cell_rect.width )
3920                 {
3921                     if ( align & wxALIGN_CENTER_HORIZONTAL )
3922                         rectItem.x += (cell_rect.width - size.x)/2;
3923                     else if ( align & wxALIGN_RIGHT )
3924                         rectItem.x += cell_rect.width - size.x;
3925                     // else: wxALIGN_LEFT is the default
3926                 }
3927
3928                 if ( size.y >= 0 && size.y < cell_rect.height )
3929                 {
3930                     if ( align & wxALIGN_CENTER_VERTICAL )
3931                         rectItem.y += (cell_rect.height - size.y)/2;
3932                     else if ( align & wxALIGN_BOTTOM )
3933                         rectItem.y += cell_rect.height - size.y;
3934                     // else: wxALIGN_TOP is the default
3935                 }
3936             }
3937
3938             wxPoint pos( event.GetPosition() );
3939             pos.x -= rectItem.x;
3940             pos.y -= rectItem.y;
3941
3942             m_owner->CalcUnscrolledPosition( pos.x, pos.y, &pos.x, &pos.y );
3943
3944              /* ignore ret */ cell->WXOnLeftClick( pos, cell_rect,
3945                               model, item, col->GetModelColumn());
3946         }
3947     }
3948 }
3949
3950 void wxDataViewMainWindow::OnSetFocus( wxFocusEvent &event )
3951 {
3952     m_hasFocus = true;
3953
3954     if (HasCurrentRow())
3955         Refresh();
3956
3957     event.Skip();
3958 }
3959
3960 void wxDataViewMainWindow::OnKillFocus( wxFocusEvent &event )
3961 {
3962     m_hasFocus = false;
3963
3964     if (HasCurrentRow())
3965         Refresh();
3966
3967     event.Skip();
3968 }
3969
3970 //-----------------------------------------------------------------------------
3971 // wxDataViewCtrl
3972 //-----------------------------------------------------------------------------
3973
3974 WX_DEFINE_LIST(wxDataViewColumnList)
3975
3976 IMPLEMENT_DYNAMIC_CLASS(wxDataViewCtrl, wxDataViewCtrlBase)
3977 BEGIN_EVENT_TABLE(wxDataViewCtrl, wxDataViewCtrlBase)
3978     EVT_SIZE(wxDataViewCtrl::OnSize)
3979 END_EVENT_TABLE()
3980
3981 wxDataViewCtrl::~wxDataViewCtrl()
3982 {
3983     if (m_notifier)
3984         GetModel()->RemoveNotifier( m_notifier );
3985
3986     m_cols.Clear();
3987     m_colsBestWidths.clear();
3988 }
3989
3990 void wxDataViewCtrl::Init()
3991 {
3992     m_cols.DeleteContents(true);
3993     m_notifier = NULL;
3994
3995     // No sorting column at start
3996     m_sortingColumnIdx = wxNOT_FOUND;
3997
3998     m_headerArea = NULL;
3999 }
4000
4001 bool wxDataViewCtrl::Create(wxWindow *parent,
4002                             wxWindowID id,
4003                             const wxPoint& pos,
4004                             const wxSize& size,
4005                             long style,
4006                             const wxValidator& validator,
4007                             const wxString& name)
4008 {
4009 //    if ( (style & wxBORDER_MASK) == 0)
4010 //        style |= wxBORDER_SUNKEN;
4011
4012     Init();
4013
4014     if (!wxControl::Create( parent, id, pos, size,
4015                             style | wxScrolledWindowStyle, validator, name))
4016         return false;
4017
4018     SetInitialSize(size);
4019
4020 #ifdef __WXMAC__
4021     MacSetClipChildren( true );
4022 #endif
4023
4024     m_clientArea = new wxDataViewMainWindow( this, wxID_ANY );
4025
4026     // We use the cursor keys for moving the selection, not scrolling, so call
4027     // this method to ensure wxScrollHelperEvtHandler doesn't catch all
4028     // keyboard events forwarded to us from wxListMainWindow.
4029     DisableKeyboardScrolling();
4030
4031     if (HasFlag(wxDV_NO_HEADER))
4032         m_headerArea = NULL;
4033     else
4034         m_headerArea = new wxDataViewHeaderWindow(this);
4035
4036     SetTargetWindow( m_clientArea );
4037
4038     wxBoxSizer *sizer = new wxBoxSizer( wxVERTICAL );
4039     if (m_headerArea)
4040         sizer->Add( m_headerArea, 0, wxGROW );
4041     sizer->Add( m_clientArea, 1, wxGROW );
4042     SetSizer( sizer );
4043
4044     return true;
4045 }
4046
4047 wxBorder wxDataViewCtrl::GetDefaultBorder() const
4048 {
4049     return wxBORDER_THEME;
4050 }
4051
4052 #ifdef __WXMSW__
4053 WXLRESULT wxDataViewCtrl::MSWWindowProc(WXUINT nMsg,
4054                                         WXWPARAM wParam,
4055                                         WXLPARAM lParam)
4056 {
4057     WXLRESULT rc = wxDataViewCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
4058
4059 #ifndef __WXWINCE__
4060     // we need to process arrows ourselves for scrolling
4061     if ( nMsg == WM_GETDLGCODE )
4062     {
4063         rc |= DLGC_WANTARROWS;
4064     }
4065 #endif
4066
4067     return rc;
4068 }
4069 #endif
4070
4071 wxSize wxDataViewCtrl::GetSizeAvailableForScrollTarget(const wxSize& size)
4072 {
4073     wxSize newsize = size;
4074     if (!HasFlag(wxDV_NO_HEADER) && (m_headerArea))
4075     newsize.y -= m_headerArea->GetSize().y;
4076
4077     return newsize;
4078 }
4079
4080 void wxDataViewCtrl::OnSize( wxSizeEvent &WXUNUSED(event) )
4081 {
4082     // We need to override OnSize so that our scrolled
4083     // window a) does call Layout() to use sizers for
4084     // positioning the controls but b) does not query
4085     // the sizer for their size and use that for setting
4086     // the scrollable area as set that ourselves by
4087     // calling SetScrollbar() further down.
4088
4089     Layout();
4090
4091     AdjustScrollbars();
4092
4093     // We must redraw the headers if their height changed. Normally this
4094     // shouldn't happen as the control shouldn't let itself be resized beneath
4095     // its minimal height but avoid the display artefacts that appear if it
4096     // does happen, e.g. because there is really not enough vertical space.
4097     if ( !HasFlag(wxDV_NO_HEADER) && m_headerArea &&
4098             m_headerArea->GetSize().y <= m_headerArea->GetBestSize(). y )
4099     {
4100         m_headerArea->Refresh();
4101     }
4102 }
4103
4104 void wxDataViewCtrl::SetFocus()
4105 {
4106     if (m_clientArea)
4107         m_clientArea->SetFocus();
4108 }
4109
4110 bool wxDataViewCtrl::AssociateModel( wxDataViewModel *model )
4111 {
4112     if (!wxDataViewCtrlBase::AssociateModel( model ))
4113         return false;
4114
4115     m_notifier = new wxGenericDataViewModelNotifier( m_clientArea );
4116
4117     model->AddNotifier( m_notifier );
4118
4119     m_clientArea->DestroyTree();
4120
4121     m_clientArea->BuildTree(model);
4122
4123     m_clientArea->UpdateDisplay();
4124
4125     return true;
4126 }
4127
4128 #if wxUSE_DRAG_AND_DROP
4129
4130 bool wxDataViewCtrl::EnableDragSource( const wxDataFormat &format )
4131 {
4132     return m_clientArea->EnableDragSource( format );
4133 }
4134
4135 bool wxDataViewCtrl::EnableDropTarget( const wxDataFormat &format )
4136 {
4137     return m_clientArea->EnableDropTarget( format );
4138 }
4139
4140 #endif // wxUSE_DRAG_AND_DROP
4141
4142 bool wxDataViewCtrl::AppendColumn( wxDataViewColumn *col )
4143 {
4144     if (!wxDataViewCtrlBase::AppendColumn(col))
4145         return false;
4146
4147     m_cols.Append( col );
4148     m_colsBestWidths.push_back(0);
4149     OnColumnsCountChanged();
4150     return true;
4151 }
4152
4153 bool wxDataViewCtrl::PrependColumn( wxDataViewColumn *col )
4154 {
4155     if (!wxDataViewCtrlBase::PrependColumn(col))
4156         return false;
4157
4158     m_cols.Insert( col );
4159     m_colsBestWidths.insert(m_colsBestWidths.begin(), 0);
4160     OnColumnsCountChanged();
4161     return true;
4162 }
4163
4164 bool wxDataViewCtrl::InsertColumn( unsigned int pos, wxDataViewColumn *col )
4165 {
4166     if (!wxDataViewCtrlBase::InsertColumn(pos,col))
4167         return false;
4168
4169     m_cols.Insert( pos, col );
4170     m_colsBestWidths.insert(m_colsBestWidths.begin() + pos, 0);
4171     OnColumnsCountChanged();
4172     return true;
4173 }
4174
4175 void wxDataViewCtrl::OnColumnChange(unsigned int idx)
4176 {
4177     if ( m_headerArea )
4178         m_headerArea->UpdateColumn(idx);
4179
4180     m_clientArea->UpdateDisplay();
4181 }
4182
4183 void wxDataViewCtrl::OnColumnsCountChanged()
4184 {
4185     if (m_headerArea)
4186         m_headerArea->SetColumnCount(GetColumnCount());
4187
4188     m_clientArea->UpdateDisplay();
4189 }
4190
4191 void wxDataViewCtrl::DoSetExpanderColumn()
4192 {
4193     m_clientArea->UpdateDisplay();
4194 }
4195
4196 void wxDataViewCtrl::DoSetIndent()
4197 {
4198     m_clientArea->UpdateDisplay();
4199 }
4200
4201 unsigned int wxDataViewCtrl::GetColumnCount() const
4202 {
4203     return m_cols.GetCount();
4204 }
4205
4206 bool wxDataViewCtrl::SetRowHeight( int lineHeight )
4207 {
4208     if ( !m_clientArea )
4209         return false;
4210
4211     m_clientArea->SetRowHeight(lineHeight);
4212
4213     return true;
4214 }
4215
4216 wxDataViewColumn* wxDataViewCtrl::GetColumn( unsigned int idx ) const
4217 {
4218     return m_cols[idx];
4219 }
4220
4221 wxDataViewColumn *wxDataViewCtrl::GetColumnAt(unsigned int pos) const
4222 {
4223     // columns can't be reordered if there is no header window which allows
4224     // to do this
4225     const unsigned idx = m_headerArea ? m_headerArea->GetColumnsOrder()[pos]
4226                                     : pos;
4227
4228     return GetColumn(idx);
4229 }
4230
4231 int wxDataViewCtrl::GetColumnIndex(const wxDataViewColumn *column) const
4232 {
4233     const unsigned count = m_cols.size();
4234     for ( unsigned n = 0; n < count; n++ )
4235     {
4236         if ( m_cols[n] == column )
4237             return n;
4238     }
4239
4240     return wxNOT_FOUND;
4241 }
4242
4243 unsigned int wxDataViewCtrl::GetBestColumnWidth(int idx) const
4244 {
4245     if ( m_colsBestWidths[idx] != 0 )
4246         return m_colsBestWidths[idx];
4247
4248     const int count = m_clientArea->GetRowCount();
4249     wxDataViewColumn *column = GetColumn(idx);
4250     wxDataViewRenderer *renderer =
4251         const_cast<wxDataViewRenderer*>(column->GetRenderer());
4252
4253     class MaxWidthCalculator
4254     {
4255     public:
4256         MaxWidthCalculator(wxDataViewMainWindow *clientArea,
4257                            wxDataViewRenderer *renderer,
4258                            const wxDataViewModel *model,
4259                            unsigned column)
4260             : m_width(0),
4261               m_clientArea(clientArea),
4262               m_renderer(renderer),
4263               m_model(model),
4264               m_column(column)
4265         {
4266         }
4267
4268         void UpdateWithWidth(int width)
4269         {
4270             m_width = wxMax(m_width, width);
4271         }
4272
4273         void UpdateWithRow(int row)
4274         {
4275             wxDataViewItem item = m_clientArea->GetItemByRow(row);
4276             m_renderer->PrepareForItem(m_model, item, m_column);
4277             m_width = wxMax(m_width, m_renderer->GetSize().x);
4278         }
4279
4280         int GetMaxWidth() const { return m_width; }
4281
4282     private:
4283         int m_width;
4284         wxDataViewMainWindow *m_clientArea;
4285         wxDataViewRenderer *m_renderer;
4286         const wxDataViewModel *m_model;
4287         unsigned m_column;
4288     };
4289
4290     MaxWidthCalculator calculator(m_clientArea, renderer,
4291                                   GetModel(), column->GetModelColumn());
4292
4293     if ( m_headerArea )
4294     {
4295         int header_width = m_headerArea->GetTextExtent(column->GetTitle()).x;
4296         // Labels on native MSW header are indented on both sides
4297         header_width +=
4298             wxRendererNative::Get().GetHeaderButtonMargin(m_headerArea);
4299         calculator.UpdateWithWidth(header_width);
4300     }
4301
4302     // The code below deserves some explanation. For very large controls, we
4303     // simply can't afford to calculate sizes for all items, it takes too
4304     // long. So the best we can do is to check the first and the last N/2
4305     // items in the control for some sufficiently large N and calculate best
4306     // sizes from that. That can result in the calculated best width being too
4307     // small for some outliers, but it's better to get slightly imperfect
4308     // result than to wait several seconds after every update. To avoid highly
4309     // visible miscalculations, we also include all currently visible items
4310     // no matter what.  Finally, the value of N is determined dynamically by
4311     // measuring how much time we spent on the determining item widths so far.
4312
4313 #if wxUSE_STOPWATCH
4314     int top_part_end = count;
4315     static const long CALC_TIMEOUT = 20/*ms*/;
4316     // don't call wxStopWatch::Time() too often
4317     static const unsigned CALC_CHECK_FREQ = 100;
4318     wxStopWatch timer;
4319 #else
4320     // use some hard-coded limit, that's the best we can do without timer
4321     int top_part_end = wxMin(500, count);
4322 #endif // wxUSE_STOPWATCH/!wxUSE_STOPWATCH
4323
4324     int row = 0;
4325
4326     for ( row = 0; row < top_part_end; row++ )
4327     {
4328 #if wxUSE_STOPWATCH
4329         if ( row % CALC_CHECK_FREQ == CALC_CHECK_FREQ-1 &&
4330              timer.Time() > CALC_TIMEOUT )
4331             break;
4332 #endif // wxUSE_STOPWATCH
4333         calculator.UpdateWithRow(row);
4334     }
4335
4336     // row is the first unmeasured item now; that's our value of N/2
4337
4338     if ( row < count )
4339     {
4340         top_part_end = row;
4341
4342         // add bottom N/2 items now:
4343         const int bottom_part_start = wxMax(row, count - row);
4344         for ( row = bottom_part_start; row < count; row++ )
4345         {
4346             calculator.UpdateWithRow(row);
4347         }
4348
4349         // finally, include currently visible items in the calculation:
4350         const wxPoint origin = CalcUnscrolledPosition(wxPoint(0, 0));
4351         int first_visible = m_clientArea->GetLineAt(origin.y);
4352         int last_visible = m_clientArea->GetLineAt(origin.y + GetClientSize().y);
4353
4354         first_visible = wxMax(first_visible, top_part_end);
4355         last_visible = wxMin(bottom_part_start, last_visible);
4356
4357         for ( row = first_visible; row < last_visible; row++ )
4358         {
4359             calculator.UpdateWithRow(row);
4360         }
4361
4362         wxLogTrace("dataview",
4363                    "determined best size from %d top, %d bottom plus %d more visible items out of %d total",
4364                    top_part_end,
4365                    count - bottom_part_start,
4366                    wxMax(0, last_visible - first_visible),
4367                    count);
4368     }
4369
4370     int max_width = calculator.GetMaxWidth();
4371     if ( max_width > 0 )
4372         max_width += 2 * PADDING_RIGHTLEFT;
4373
4374     const_cast<wxDataViewCtrl*>(this)->m_colsBestWidths[idx] = max_width;
4375     return max_width;
4376 }
4377
4378 void wxDataViewCtrl::ColumnMoved(wxDataViewColumn * WXUNUSED(col),
4379                                 unsigned int WXUNUSED(new_pos))
4380 {
4381     // do _not_ reorder m_cols elements here, they should always be in the
4382     // order in which columns were added, we only display the columns in
4383     // different order
4384     m_clientArea->UpdateDisplay();
4385 }
4386
4387 bool wxDataViewCtrl::DeleteColumn( wxDataViewColumn *column )
4388 {
4389     wxDataViewColumnList::compatibility_iterator ret = m_cols.Find( column );
4390     if (!ret)
4391         return false;
4392
4393     m_colsBestWidths.erase(m_colsBestWidths.begin() + GetColumnIndex(column));
4394     m_cols.Erase(ret);
4395     OnColumnsCountChanged();
4396
4397     return true;
4398 }
4399
4400 bool wxDataViewCtrl::ClearColumns()
4401 {
4402     m_cols.Clear();
4403     m_colsBestWidths.clear();
4404     OnColumnsCountChanged();
4405     return true;
4406 }
4407
4408 void wxDataViewCtrl::UpdateColBestWidth(int idx)
4409 {
4410     m_colsBestWidths[idx] = 0;
4411
4412     if ( m_headerArea )
4413         m_headerArea->UpdateColumn(idx);
4414 }
4415
4416 void wxDataViewCtrl::UpdateColBestWidths()
4417 {
4418     m_colsBestWidths.clear();
4419     m_colsBestWidths.resize(m_cols.size());
4420
4421     if ( m_headerArea )
4422     {
4423         const unsigned cols = m_headerArea->GetColumnCount();
4424         for ( unsigned i = 0; i < cols; i++ )
4425             m_headerArea->UpdateColumn(i);
4426     }
4427 }
4428
4429 int wxDataViewCtrl::GetColumnPosition( const wxDataViewColumn *column ) const
4430 {
4431 #if 1
4432     unsigned int len = GetColumnCount();
4433     for ( unsigned int i = 0; i < len; i++ )
4434     {
4435         wxDataViewColumn * col = GetColumnAt(i);
4436         if (column==col)
4437             return i;
4438     }
4439
4440     return wxNOT_FOUND;
4441 #else
4442     // This returns the position in pixels which is not what we want.
4443     int ret = 0,
4444         dummy = 0;
4445     unsigned int len = GetColumnCount();
4446     for ( unsigned int i = 0; i < len; i++ )
4447     {
4448         wxDataViewColumn * col = GetColumnAt(i);
4449         if (col->IsHidden())
4450             continue;
4451         ret += col->GetWidth();
4452         if (column==col)
4453         {
4454             CalcScrolledPosition( ret, dummy, &ret, &dummy );
4455             break;
4456         }
4457     }
4458     return ret;
4459 #endif
4460 }
4461
4462 wxDataViewColumn *wxDataViewCtrl::GetSortingColumn() const
4463 {
4464     return m_sortingColumnIdx == wxNOT_FOUND ? NULL
4465                                             : GetColumn(m_sortingColumnIdx);
4466 }
4467
4468 wxDataViewItem wxDataViewCtrl::DoGetCurrentItem() const
4469 {
4470     return GetItemByRow(m_clientArea->GetCurrentRow());
4471 }
4472
4473 void wxDataViewCtrl::DoSetCurrentItem(const wxDataViewItem& item)
4474 {
4475     const int row = m_clientArea->GetRowByItem(item);
4476
4477     const unsigned oldCurrent = m_clientArea->GetCurrentRow();
4478     if ( static_cast<unsigned>(row) != oldCurrent )
4479     {
4480         m_clientArea->ChangeCurrentRow(row);
4481         m_clientArea->RefreshRow(oldCurrent);
4482         m_clientArea->RefreshRow(row);
4483     }
4484 }
4485
4486 int wxDataViewCtrl::GetSelectedItemsCount() const
4487 {
4488     return m_clientArea->GetSelections().size();
4489 }
4490
4491 int wxDataViewCtrl::GetSelections( wxDataViewItemArray & sel ) const
4492 {
4493     sel.Empty();
4494     const wxDataViewSelection& selections = m_clientArea->GetSelections();
4495
4496     const size_t len = selections.size();
4497     for ( size_t i = 0; i < len; i++ )
4498     {
4499         wxDataViewItem item = m_clientArea->GetItemByRow(selections[i]);
4500         if ( item.IsOk() )
4501         {
4502             sel.Add(item);
4503         }
4504         else
4505         {
4506             wxFAIL_MSG( "invalid item in selection - bad internal state" );
4507         }
4508     }
4509
4510     return sel.size();
4511 }
4512
4513 void wxDataViewCtrl::SetSelections( const wxDataViewItemArray & sel )
4514 {
4515     wxDataViewSelection selection(wxDataViewSelectionCmp);
4516
4517     wxDataViewItem last_parent;
4518
4519     int len = sel.GetCount();
4520     for( int i = 0; i < len; i ++ )
4521     {
4522         wxDataViewItem item = sel[i];
4523         wxDataViewItem parent = GetModel()->GetParent( item );
4524         if (parent)
4525         {
4526             if (parent != last_parent)
4527                 ExpandAncestors(item);
4528         }
4529
4530         last_parent = parent;
4531         int row = m_clientArea->GetRowByItem( item );
4532         if( row >= 0 )
4533             selection.Add( static_cast<unsigned int>(row) );
4534     }
4535
4536     m_clientArea->SetSelections( selection );
4537 }
4538
4539 void wxDataViewCtrl::Select( const wxDataViewItem & item )
4540 {
4541     ExpandAncestors( item );
4542
4543     int row = m_clientArea->GetRowByItem( item );
4544     if( row >= 0 )
4545     {
4546         // Unselect all rows before select another in the single select mode
4547         if (m_clientArea->IsSingleSel())
4548             m_clientArea->SelectAllRows(false);
4549
4550         m_clientArea->SelectRow(row, true);
4551
4552         // Also set focus to the selected item
4553         m_clientArea->ChangeCurrentRow( row );
4554     }
4555 }
4556
4557 void wxDataViewCtrl::Unselect( const wxDataViewItem & item )
4558 {
4559     int row = m_clientArea->GetRowByItem( item );
4560     if( row >= 0 )
4561         m_clientArea->SelectRow(row, false);
4562 }
4563
4564 bool wxDataViewCtrl::IsSelected( const wxDataViewItem & item ) const
4565 {
4566     int row = m_clientArea->GetRowByItem( item );
4567     if( row >= 0 )
4568     {
4569         return m_clientArea->IsRowSelected(row);
4570     }
4571     return false;
4572 }
4573
4574 void wxDataViewCtrl::SelectAll()
4575 {
4576     m_clientArea->SelectAllRows(true);
4577 }
4578
4579 void wxDataViewCtrl::UnselectAll()
4580 {
4581     m_clientArea->SelectAllRows(false);
4582 }
4583
4584 void wxDataViewCtrl::EnsureVisible( int row, int column )
4585 {
4586     if( row < 0 )
4587         row = 0;
4588     if( row > (int) m_clientArea->GetRowCount() )
4589         row = m_clientArea->GetRowCount();
4590
4591     int first = m_clientArea->GetFirstVisibleRow();
4592     int last = m_clientArea->GetLastVisibleRow();
4593     if( row < first )
4594         m_clientArea->ScrollTo( row, column );
4595     else if( row > last )
4596         m_clientArea->ScrollTo( row - last + first, column );
4597     else
4598         m_clientArea->ScrollTo( first, column );
4599 }
4600
4601 void wxDataViewCtrl::EnsureVisible( const wxDataViewItem & item, const wxDataViewColumn * column )
4602 {
4603     ExpandAncestors( item );
4604
4605     m_clientArea->RecalculateDisplay();
4606
4607     int row = m_clientArea->GetRowByItem(item);
4608     if( row >= 0 )
4609     {
4610         if( column == NULL )
4611             EnsureVisible(row, -1);
4612         else
4613             EnsureVisible( row, GetColumnIndex(column) );
4614     }
4615
4616 }
4617
4618 void wxDataViewCtrl::HitTest( const wxPoint & point, wxDataViewItem & item,
4619                               wxDataViewColumn* &column ) const
4620 {
4621     m_clientArea->HitTest(point, item, column);
4622 }
4623
4624 wxRect wxDataViewCtrl::GetItemRect( const wxDataViewItem & item,
4625                                     const wxDataViewColumn* column ) const
4626 {
4627     return m_clientArea->GetItemRect(item, column);
4628 }
4629
4630 wxDataViewItem wxDataViewCtrl::GetItemByRow( unsigned int row ) const
4631 {
4632     return m_clientArea->GetItemByRow( row );
4633 }
4634
4635 int wxDataViewCtrl::GetRowByItem( const wxDataViewItem & item ) const
4636 {
4637     return m_clientArea->GetRowByItem( item );
4638 }
4639
4640 void wxDataViewCtrl::Expand( const wxDataViewItem & item )
4641 {
4642     ExpandAncestors( item );
4643
4644     int row = m_clientArea->GetRowByItem( item );
4645     if (row != -1)
4646         m_clientArea->Expand(row);
4647 }
4648
4649 void wxDataViewCtrl::Collapse( const wxDataViewItem & item )
4650 {
4651     int row = m_clientArea->GetRowByItem( item );
4652     if (row != -1)
4653         m_clientArea->Collapse(row);
4654 }
4655
4656 bool wxDataViewCtrl::IsExpanded( const wxDataViewItem & item ) const
4657 {
4658     int row = m_clientArea->GetRowByItem( item );
4659     if (row != -1)
4660         return m_clientArea->IsExpanded(row);
4661     return false;
4662 }
4663
4664 void wxDataViewCtrl::StartEditor( const wxDataViewItem & item, unsigned int column )
4665 {
4666     wxDataViewColumn* col = GetColumn( column );
4667     if (!col)
4668         return;
4669
4670     wxRect itemRect = GetItemRect(item, col);
4671     wxDataViewRenderer* renderer = col->GetRenderer();
4672     if (renderer->GetMode() == wxDATAVIEW_CELL_EDITABLE)
4673         renderer->StartEditing(item, itemRect);
4674 }
4675
4676 #endif // !wxUSE_GENERICDATAVIEWCTRL
4677
4678 #endif // wxUSE_DATAVIEWCTRL