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             const size_t selCount = m_selection.size();
2027             for ( size_t i = 0; i < selCount; i++ )
2028             {
2029                 if ( m_selection[i] > (unsigned)row )
2030                     m_selection[i]--;
2031             }
2032
2033             int itemRow = m_selection.Index(row);
2034             if ( itemRow != wxNOT_FOUND )
2035                 m_selection.RemoveAt(itemRow);
2036         }
2037
2038     }
2039     else // general case
2040     {
2041         wxDataViewTreeNode * node = FindNode(parent);
2042
2043         // Notice that it is possible that the item being deleted is not in the
2044         // tree at all, for example we could be deleting a never shown (because
2045         // collapsed) item in a tree model. So it's not an error if we don't know
2046         // about this item, just return without doing anything then.
2047         if ( !node )
2048             return false;
2049
2050         int itemPosInNode = node->GetChildren().Index(item.GetID());
2051         if ( itemPosInNode == wxNOT_FOUND )
2052             return false;
2053
2054         bool isContainer = false;
2055         wxDataViewTreeNode *itemNode = NULL;
2056
2057         const wxDataViewTreeNodes nds = node->GetNodes();
2058         for (size_t i = 0; i < nds.GetCount(); i ++)
2059         {
2060             if (nds[i]->GetItem() == item)
2061             {
2062                 isContainer = true;
2063                 itemNode = nds[i];
2064                 break;
2065             }
2066         }
2067
2068         // Delete the item from wxDataViewTreeNode representation:
2069         int itemsDeleted = 1;
2070         node->GetChildren().Remove( item.GetID() );
2071
2072         if( isContainer )
2073         {
2074             wxDataViewTreeNode *n = node->FindItemAsNode(item);
2075
2076             wxCHECK_MSG( n != NULL, false, "item not found" );
2077
2078             node->GetNodes().Remove( n );
2079             itemsDeleted += n->GetSubTreeCount();
2080             ::DestroyTreeHelper(n);
2081         }
2082
2083         // Make the row number invalid and get a new valid one when user call GetRowCount
2084         m_count = -1;
2085         node->ChangeSubTreeCount(-itemsDeleted);
2086
2087         // Update selection by removing 'item' and its entire children tree from the selection.
2088         if ( !m_selection.empty() )
2089         {
2090             // we can't call GetRowByItem() on 'item', as it's already deleted, so compute it from
2091             // the parent ('node') and position in its list of children
2092             int itemRow;
2093             if ( itemPosInNode == 0 )
2094             {
2095                 // 1st child, row number is that of the parent node + 1
2096                 itemRow = GetRowByItem(node->GetItem()) + 1;
2097             }
2098             else
2099             {
2100                 // row number is that of the sibling above 'item' + its subtree if any + 1
2101                 const wxDataViewItem sibling = wxDataViewItem(node->GetChildren()[itemPosInNode - 1]);
2102                 const wxDataViewTreeNode *siblingNode = node->FindItemAsNode(sibling);
2103
2104                 itemRow = GetRowByItem(sibling);
2105                 if ( siblingNode )
2106                     itemRow += siblingNode->GetSubTreeCount();
2107                 itemRow += 1;
2108             }
2109
2110             wxDataViewSelection newsel(wxDataViewSelectionCmp);
2111
2112             const size_t numSelections = m_selection.size();
2113             for ( size_t i = 0; i < numSelections; ++i )
2114             {
2115                 const int s = m_selection[i];
2116                 if ( s < itemRow )
2117                     newsel.push_back(s);
2118                 else if ( s >= itemRow + itemsDeleted )
2119                     newsel.push_back(s - itemsDeleted);
2120                 // else: deleted item, remove from selection
2121             }
2122
2123             m_selection = newsel;
2124         }
2125     }
2126
2127     // Change the current row to the last row if the current exceed the max row number
2128     if( m_currentRow > GetRowCount() )
2129         ChangeCurrentRow(m_count - 1);
2130
2131     GetOwner()->UpdateColBestWidths();
2132     UpdateDisplay();
2133
2134     return true;
2135 }
2136
2137 bool wxDataViewMainWindow::ItemChanged(const wxDataViewItem & item)
2138 {
2139     SortPrepare();
2140     g_model->Resort();
2141
2142     GetOwner()->UpdateColBestWidths();
2143
2144     // Send event
2145     wxWindow *parent = GetParent();
2146     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
2147     le.SetEventObject(parent);
2148     le.SetModel(GetOwner()->GetModel());
2149     le.SetItem(item);
2150     parent->GetEventHandler()->ProcessEvent(le);
2151
2152     return true;
2153 }
2154
2155 bool wxDataViewMainWindow::ValueChanged( const wxDataViewItem & item, unsigned int model_column )
2156 {
2157     int view_column = -1;
2158     unsigned int n_col = m_owner->GetColumnCount();
2159     for (unsigned i = 0; i < n_col; i++)
2160     {
2161         wxDataViewColumn *column = m_owner->GetColumn( i );
2162         if (column->GetModelColumn() == model_column)
2163         {
2164             view_column = (int) i;
2165             break;
2166         }
2167     }
2168     if (view_column == -1)
2169         return false;
2170
2171     // NOTE: to be valid, we cannot use e.g. INT_MAX - 1
2172 /*#define MAX_VIRTUAL_WIDTH       100000
2173
2174     wxRect rect( 0, row*m_lineHeight, MAX_VIRTUAL_WIDTH, m_lineHeight );
2175     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2176     Refresh( true, &rect );
2177
2178     return true;
2179 */
2180     SortPrepare();
2181     g_model->Resort();
2182
2183     GetOwner()->UpdateColBestWidth(view_column);
2184
2185     // Send event
2186     wxWindow *parent = GetParent();
2187     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
2188     le.SetEventObject(parent);
2189     le.SetModel(GetOwner()->GetModel());
2190     le.SetItem(item);
2191     le.SetColumn(view_column);
2192     le.SetDataViewColumn(GetOwner()->GetColumn(view_column));
2193     parent->GetEventHandler()->ProcessEvent(le);
2194
2195     return true;
2196 }
2197
2198 bool wxDataViewMainWindow::Cleared()
2199 {
2200     DestroyTree();
2201     m_selection.Clear();
2202
2203     SortPrepare();
2204     BuildTree( GetOwner()->GetModel() );
2205
2206     GetOwner()->UpdateColBestWidths();
2207     UpdateDisplay();
2208
2209     return true;
2210 }
2211
2212 void wxDataViewMainWindow::UpdateDisplay()
2213 {
2214     m_dirty = true;
2215     m_underMouse = NULL;
2216 }
2217
2218 void wxDataViewMainWindow::OnInternalIdle()
2219 {
2220     wxWindow::OnInternalIdle();
2221
2222     if (m_dirty)
2223     {
2224         RecalculateDisplay();
2225         m_dirty = false;
2226     }
2227 }
2228
2229 void wxDataViewMainWindow::RecalculateDisplay()
2230 {
2231     wxDataViewModel *model = GetOwner()->GetModel();
2232     if (!model)
2233     {
2234         Refresh();
2235         return;
2236     }
2237
2238     int width = GetEndOfLastCol();
2239     int height = GetLineStart( GetRowCount() );
2240
2241     SetVirtualSize( width, height );
2242     GetOwner()->SetScrollRate( 10, m_lineHeight );
2243
2244     Refresh();
2245 }
2246
2247 void wxDataViewMainWindow::ScrollWindow( int dx, int dy, const wxRect *rect )
2248 {
2249     m_underMouse = NULL;
2250
2251     wxWindow::ScrollWindow( dx, dy, rect );
2252
2253     if (GetOwner()->m_headerArea)
2254         GetOwner()->m_headerArea->ScrollWindow( dx, 0 );
2255 }
2256
2257 void wxDataViewMainWindow::ScrollTo( int rows, int column )
2258 {
2259     m_underMouse = NULL;
2260
2261     int x, y;
2262     m_owner->GetScrollPixelsPerUnit( &x, &y );
2263     int sy = GetLineStart( rows )/y;
2264     int sx = 0;
2265     if( column != -1 )
2266     {
2267         wxRect rect = GetClientRect();
2268         int colnum = 0;
2269         int x_start, w = 0;
2270         int xx, yy, xe;
2271         m_owner->CalcUnscrolledPosition( rect.x, rect.y, &xx, &yy );
2272         for (x_start = 0; colnum < column; colnum++)
2273         {
2274             wxDataViewColumn *col = GetOwner()->GetColumnAt(colnum);
2275             if (col->IsHidden())
2276                 continue;      // skip it!
2277
2278             w = col->GetWidth();
2279             x_start += w;
2280         }
2281
2282         int x_end = x_start + w;
2283         xe = xx + rect.width;
2284         if( x_end > xe )
2285         {
2286             sx = ( xx + x_end - xe )/x;
2287         }
2288         if( x_start < xx )
2289         {
2290             sx = x_start/x;
2291         }
2292     }
2293     m_owner->Scroll( sx, sy );
2294 }
2295
2296 int wxDataViewMainWindow::GetCountPerPage() const
2297 {
2298     wxSize size = GetClientSize();
2299     return size.y / m_lineHeight;
2300 }
2301
2302 int wxDataViewMainWindow::GetEndOfLastCol() const
2303 {
2304     int width = 0;
2305     unsigned int i;
2306     for (i = 0; i < GetOwner()->GetColumnCount(); i++)
2307     {
2308         const wxDataViewColumn *c =
2309             const_cast<wxDataViewCtrl*>(GetOwner())->GetColumnAt( i );
2310
2311         if (!c->IsHidden())
2312             width += c->GetWidth();
2313     }
2314     return width;
2315 }
2316
2317 unsigned int wxDataViewMainWindow::GetFirstVisibleRow() const
2318 {
2319     int x = 0;
2320     int y = 0;
2321     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
2322
2323     return GetLineAt( y );
2324 }
2325
2326 unsigned int wxDataViewMainWindow::GetLastVisibleRow()
2327 {
2328     wxSize client_size = GetClientSize();
2329     m_owner->CalcUnscrolledPosition( client_size.x, client_size.y,
2330                                     &client_size.x, &client_size.y );
2331
2332     // we should deal with the pixel here
2333     unsigned int row = GetLineAt(client_size.y) - 1;
2334
2335     return wxMin( GetRowCount()-1, row );
2336 }
2337
2338 unsigned int wxDataViewMainWindow::GetRowCount()
2339 {
2340     if ( m_count == -1 )
2341     {
2342         m_count = RecalculateCount();
2343         UpdateDisplay();
2344     }
2345     return m_count;
2346 }
2347
2348 void wxDataViewMainWindow::ChangeCurrentRow( unsigned int row )
2349 {
2350     m_currentRow = row;
2351
2352     // send event
2353 }
2354
2355 void wxDataViewMainWindow::SelectAllRows( bool on )
2356 {
2357     if (IsEmpty())
2358         return;
2359
2360     if (on)
2361     {
2362         m_selection.Clear();
2363         for (unsigned int i = 0; i < GetRowCount(); i++)
2364             m_selection.Add( i );
2365         Refresh();
2366     }
2367     else
2368     {
2369         unsigned int first_visible = GetFirstVisibleRow();
2370         unsigned int last_visible = GetLastVisibleRow();
2371         unsigned int i;
2372         for (i = 0; i < m_selection.GetCount(); i++)
2373         {
2374             unsigned int row = m_selection[i];
2375             if ((row >= first_visible) && (row <= last_visible))
2376                 RefreshRow( row );
2377         }
2378         m_selection.Clear();
2379     }
2380 }
2381
2382 void wxDataViewMainWindow::SelectRow( unsigned int row, bool on )
2383 {
2384     if (m_selection.Index( row ) == wxNOT_FOUND)
2385     {
2386         if (on)
2387         {
2388             m_selection.Add( row );
2389             RefreshRow( row );
2390         }
2391     }
2392     else
2393     {
2394         if (!on)
2395         {
2396             m_selection.Remove( row );
2397             RefreshRow( row );
2398         }
2399     }
2400 }
2401
2402 void wxDataViewMainWindow::SelectRows( unsigned int from, unsigned int to, bool on )
2403 {
2404     if (from > to)
2405     {
2406         unsigned int tmp = from;
2407         from = to;
2408         to = tmp;
2409     }
2410
2411     unsigned int i;
2412     for (i = from; i <= to; i++)
2413     {
2414         if (m_selection.Index( i ) == wxNOT_FOUND)
2415         {
2416             if (on)
2417                 m_selection.Add( i );
2418         }
2419         else
2420         {
2421             if (!on)
2422                 m_selection.Remove( i );
2423         }
2424     }
2425     RefreshRows( from, to );
2426 }
2427
2428 void wxDataViewMainWindow::Select( const wxArrayInt& aSelections )
2429 {
2430     for (size_t i=0; i < aSelections.GetCount(); i++)
2431     {
2432         int n = aSelections[i];
2433
2434         m_selection.Add( n );
2435         RefreshRow( n );
2436     }
2437 }
2438
2439 void wxDataViewMainWindow::ReverseRowSelection( unsigned int row )
2440 {
2441     if (m_selection.Index( row ) == wxNOT_FOUND)
2442         m_selection.Add( row );
2443     else
2444         m_selection.Remove( row );
2445     RefreshRow( row );
2446 }
2447
2448 bool wxDataViewMainWindow::IsRowSelected( unsigned int row )
2449 {
2450     return (m_selection.Index( row ) != wxNOT_FOUND);
2451 }
2452
2453 void wxDataViewMainWindow::SendSelectionChangedEvent( const wxDataViewItem& item)
2454 {
2455     wxWindow *parent = GetParent();
2456     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED, parent->GetId());
2457
2458     le.SetEventObject(parent);
2459     le.SetModel(GetOwner()->GetModel());
2460     le.SetItem( item );
2461
2462     parent->GetEventHandler()->ProcessEvent(le);
2463 }
2464
2465 void wxDataViewMainWindow::RefreshRow( unsigned int row )
2466 {
2467     wxRect rect( 0, GetLineStart( row ), GetEndOfLastCol(), GetLineHeight( row ) );
2468     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2469
2470     wxSize client_size = GetClientSize();
2471     wxRect client_rect( 0, 0, client_size.x, client_size.y );
2472     wxRect intersect_rect = client_rect.Intersect( rect );
2473     if (intersect_rect.width > 0)
2474         Refresh( true, &intersect_rect );
2475 }
2476
2477 void wxDataViewMainWindow::RefreshRows( unsigned int from, unsigned int to )
2478 {
2479     if (from > to)
2480     {
2481         unsigned int tmp = to;
2482         to = from;
2483         from = tmp;
2484     }
2485
2486     wxRect rect( 0, GetLineStart( from ), GetEndOfLastCol(), GetLineStart( (to-from+1) ) );
2487     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2488
2489     wxSize client_size = GetClientSize();
2490     wxRect client_rect( 0, 0, client_size.x, client_size.y );
2491     wxRect intersect_rect = client_rect.Intersect( rect );
2492     if (intersect_rect.width > 0)
2493         Refresh( true, &intersect_rect );
2494 }
2495
2496 void wxDataViewMainWindow::RefreshRowsAfter( unsigned int firstRow )
2497 {
2498     wxSize client_size = GetClientSize();
2499     int start = GetLineStart( firstRow );
2500     m_owner->CalcScrolledPosition( start, 0, &start, NULL );
2501     if (start > client_size.y) return;
2502
2503     wxRect rect( 0, start, client_size.x, client_size.y - start );
2504
2505     Refresh( true, &rect );
2506 }
2507
2508 void wxDataViewMainWindow::OnArrowChar(unsigned int newCurrent, const wxKeyEvent& event)
2509 {
2510     wxCHECK_RET( newCurrent < GetRowCount(),
2511                 wxT("invalid item index in OnArrowChar()") );
2512
2513     // if there is no selection, we cannot move it anywhere
2514     if (!HasCurrentRow())
2515         return;
2516
2517     unsigned int oldCurrent = m_currentRow;
2518
2519     // in single selection we just ignore Shift as we can't select several
2520     // items anyhow
2521     if ( event.ShiftDown() && !IsSingleSel() )
2522     {
2523         RefreshRow( oldCurrent );
2524
2525         ChangeCurrentRow( newCurrent );
2526
2527         // select all the items between the old and the new one
2528         if ( oldCurrent > newCurrent )
2529         {
2530             newCurrent = oldCurrent;
2531             oldCurrent = m_currentRow;
2532         }
2533
2534         SelectRows( oldCurrent, newCurrent, true );
2535         if (oldCurrent!=newCurrent)
2536             SendSelectionChangedEvent(GetItemByRow(m_selection[0]));
2537     }
2538     else // !shift
2539     {
2540         RefreshRow( oldCurrent );
2541
2542         // all previously selected items are unselected unless ctrl is held
2543         if ( !event.ControlDown() )
2544             SelectAllRows(false);
2545
2546         ChangeCurrentRow( newCurrent );
2547
2548         if ( !event.ControlDown() )
2549         {
2550             SelectRow( m_currentRow, true );
2551             SendSelectionChangedEvent(GetItemByRow(m_currentRow));
2552         }
2553         else
2554             RefreshRow( m_currentRow );
2555     }
2556
2557     GetOwner()->EnsureVisible( m_currentRow, -1 );
2558 }
2559
2560 wxRect wxDataViewMainWindow::GetLineRect( unsigned int row ) const
2561 {
2562     wxRect rect;
2563     rect.x = 0;
2564     rect.y = GetLineStart( row );
2565     rect.width = GetEndOfLastCol();
2566     rect.height = GetLineHeight( row );
2567
2568     return rect;
2569 }
2570
2571 int wxDataViewMainWindow::GetLineStart( unsigned int row ) const
2572 {
2573     const wxDataViewModel *model = GetOwner()->GetModel();
2574
2575     if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
2576     {
2577         // TODO make more efficient
2578
2579         int start = 0;
2580
2581         unsigned int r;
2582         for (r = 0; r < row; r++)
2583         {
2584             const wxDataViewTreeNode* node = GetTreeNodeByRow(r);
2585             if (!node) return start;
2586
2587             wxDataViewItem item = node->GetItem();
2588
2589             if (node && !node->HasChildren())
2590             {
2591                 // Yes, if the node does not have any child, it must be a leaf which
2592                 // mean that it is a temporarily created by GetTreeNodeByRow
2593                 wxDELETE(node);
2594             }
2595
2596             unsigned int cols = GetOwner()->GetColumnCount();
2597             unsigned int col;
2598             int height = m_lineHeight;
2599             for (col = 0; col < cols; col++)
2600             {
2601                 const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2602                 if (column->IsHidden())
2603                     continue;      // skip it!
2604
2605                 if ((col != 0) &&
2606                     model->IsContainer(item) &&
2607                     !model->HasContainerColumns(item))
2608                     continue;      // skip it!
2609
2610                 wxDataViewRenderer *renderer =
2611                     const_cast<wxDataViewRenderer*>(column->GetRenderer());
2612                 renderer->PrepareForItem(model, item, column->GetModelColumn());
2613
2614                 height = wxMax( height, renderer->GetSize().y );
2615             }
2616
2617             start += height;
2618         }
2619
2620         return start;
2621     }
2622     else
2623     {
2624         return row * m_lineHeight;
2625     }
2626 }
2627
2628 int wxDataViewMainWindow::GetLineAt( unsigned int y ) const
2629 {
2630     const wxDataViewModel *model = GetOwner()->GetModel();
2631
2632     // check for the easy case first
2633     if ( !GetOwner()->HasFlag(wxDV_VARIABLE_LINE_HEIGHT) )
2634         return y / m_lineHeight;
2635
2636     // TODO make more efficient
2637     unsigned int row = 0;
2638     unsigned int yy = 0;
2639     for (;;)
2640     {
2641         const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
2642         if (!node)
2643         {
2644             // not really correct...
2645             return row + ((y-yy) / m_lineHeight);
2646         }
2647
2648         wxDataViewItem item = node->GetItem();
2649
2650         if (node && !node->HasChildren())
2651         {
2652             // Yes, if the node does not have any child, it must be a leaf which
2653             // mean that it is a temporarily created by GetTreeNodeByRow
2654             wxDELETE(node);
2655         }
2656
2657         unsigned int cols = GetOwner()->GetColumnCount();
2658         unsigned int col;
2659         int height = m_lineHeight;
2660         for (col = 0; col < cols; col++)
2661         {
2662             const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2663             if (column->IsHidden())
2664                 continue;      // skip it!
2665
2666             if ((col != 0) &&
2667                 model->IsContainer(item) &&
2668                 !model->HasContainerColumns(item))
2669                 continue;      // skip it!
2670
2671             wxDataViewRenderer *renderer =
2672                 const_cast<wxDataViewRenderer*>(column->GetRenderer());
2673             renderer->PrepareForItem(model, item, column->GetModelColumn());
2674
2675             height = wxMax( height, renderer->GetSize().y );
2676         }
2677
2678         yy += height;
2679         if (y < yy)
2680             return row;
2681
2682         row++;
2683     }
2684 }
2685
2686 int wxDataViewMainWindow::GetLineHeight( unsigned int row ) const
2687 {
2688     const wxDataViewModel *model = GetOwner()->GetModel();
2689
2690     if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
2691     {
2692         wxASSERT( !IsVirtualList() );
2693
2694         const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
2695         // wxASSERT( node );
2696         if (!node) return m_lineHeight;
2697
2698         wxDataViewItem item = node->GetItem();
2699
2700         if (node && !node->HasChildren())
2701         {
2702                 // Yes, if the node does not have any child, it must be a leaf which
2703                 // mean that it is a temporarily created by GetTreeNodeByRow
2704             wxDELETE(node);
2705         }
2706
2707         int height = m_lineHeight;
2708
2709         unsigned int cols = GetOwner()->GetColumnCount();
2710         unsigned int col;
2711         for (col = 0; col < cols; col++)
2712         {
2713             const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2714             if (column->IsHidden())
2715                 continue;      // skip it!
2716
2717             if ((col != 0) &&
2718                 model->IsContainer(item) &&
2719                 !model->HasContainerColumns(item))
2720                 continue;      // skip it!
2721
2722             wxDataViewRenderer *renderer =
2723                 const_cast<wxDataViewRenderer*>(column->GetRenderer());
2724             renderer->PrepareForItem(model, item, column->GetModelColumn());
2725
2726             height = wxMax( height, renderer->GetSize().y );
2727         }
2728
2729         return height;
2730     }
2731     else
2732     {
2733         return m_lineHeight;
2734     }
2735 }
2736
2737 class RowToItemJob: public DoJob
2738 {
2739 public:
2740     RowToItemJob( unsigned int row , int current )
2741         { this->row = row; this->current = current; }
2742     virtual ~RowToItemJob() {}
2743
2744     virtual int operator() ( wxDataViewTreeNode * node )
2745     {
2746         current ++;
2747         if( current == static_cast<int>(row))
2748         {
2749             ret = node->GetItem();
2750             return DoJob::OK;
2751         }
2752
2753         if( node->GetSubTreeCount() + current < static_cast<int>(row) )
2754         {
2755             current += node->GetSubTreeCount();
2756             return  DoJob::IGR;
2757         }
2758         else
2759         {
2760             // If the current has no child node, we can find the desired item of the row
2761             // number directly.
2762             // This if can speed up finding in some case, and will has a very good effect
2763             // when it comes to list view
2764             if( node->GetNodes().GetCount() == 0)
2765             {
2766                 int index = static_cast<int>(row) - current - 1;
2767                 ret = wxDataViewItem(node->GetChildren().Item( index ));
2768                 return DoJob::OK;
2769             }
2770             return DoJob::CONT;
2771         }
2772     }
2773
2774     virtual int operator() ( void * n )
2775     {
2776         current ++;
2777         if( current == static_cast<int>(row))
2778         {
2779             ret = wxDataViewItem( n );
2780             return DoJob::OK;
2781         }
2782         return DoJob::CONT;
2783     }
2784
2785     wxDataViewItem GetResult() const
2786         { return ret; }
2787
2788 private:
2789     unsigned int row;
2790     int current;
2791     wxDataViewItem ret;
2792 };
2793
2794 wxDataViewItem wxDataViewMainWindow::GetItemByRow(unsigned int row) const
2795 {
2796     if (IsVirtualList())
2797     {
2798         return wxDataViewItem( wxUIntToPtr(row+1) );
2799     }
2800     else
2801     {
2802         RowToItemJob job( row, -2 );
2803         Walker( m_root , job );
2804         return job.GetResult();
2805     }
2806 }
2807
2808 class RowToTreeNodeJob: public DoJob
2809 {
2810 public:
2811     RowToTreeNodeJob( unsigned int row , int current, wxDataViewTreeNode * node )
2812     {
2813         this->row = row;
2814         this->current = current;
2815         ret = NULL;
2816         parent = node;
2817     }
2818     virtual ~RowToTreeNodeJob(){ }
2819
2820     virtual int operator() ( wxDataViewTreeNode * node )
2821     {
2822         current ++;
2823         if( current == static_cast<int>(row))
2824         {
2825             ret = node;
2826             return DoJob::OK;
2827         }
2828
2829         if( node->GetSubTreeCount() + current < static_cast<int>(row) )
2830         {
2831             current += node->GetSubTreeCount();
2832             return  DoJob::IGR;
2833         }
2834         else
2835         {
2836             parent = node;
2837
2838             // If the current node has no children, we can find the desired item of the
2839             // row number directly.
2840             // This if can speed up finding in some case, and will have a very good
2841             // effect for list views.
2842             if( node->GetNodes().GetCount() == 0)
2843             {
2844                 int index = static_cast<int>(row) - current - 1;
2845                 void * n = node->GetChildren().Item( index );
2846                 ret = new wxDataViewTreeNode( parent );
2847                 ret->SetItem( wxDataViewItem( n ));
2848                 ret->SetHasChildren(false);
2849                 return DoJob::OK;
2850             }
2851             return DoJob::CONT;
2852         }
2853     }
2854
2855     virtual int operator() ( void * n )
2856     {
2857         current ++;
2858         if( current == static_cast<int>(row))
2859         {
2860             ret = new wxDataViewTreeNode( parent );
2861             ret->SetItem( wxDataViewItem( n ));
2862             ret->SetHasChildren(false);
2863             return DoJob::OK;
2864         }
2865
2866         return DoJob::CONT;
2867     }
2868
2869     wxDataViewTreeNode * GetResult() const
2870         { return ret; }
2871
2872 private:
2873     unsigned int row;
2874     int current;
2875     wxDataViewTreeNode * ret;
2876     wxDataViewTreeNode * parent;
2877 };
2878
2879 wxDataViewTreeNode * wxDataViewMainWindow::GetTreeNodeByRow(unsigned int row) const
2880 {
2881     wxASSERT( !IsVirtualList() );
2882
2883     RowToTreeNodeJob job( row , -2, m_root );
2884     Walker( m_root , job );
2885     return job.GetResult();
2886 }
2887
2888 wxDataViewEvent wxDataViewMainWindow::SendExpanderEvent( wxEventType type,
2889                                                          const wxDataViewItem & item )
2890 {
2891     wxWindow *parent = GetParent();
2892     wxDataViewEvent le(type, parent->GetId());
2893
2894     le.SetEventObject(parent);
2895     le.SetModel(GetOwner()->GetModel());
2896     le.SetItem( item );
2897
2898     parent->GetEventHandler()->ProcessEvent(le);
2899     return le;
2900 }
2901
2902 bool wxDataViewMainWindow::IsExpanded( unsigned int row ) const
2903 {
2904     if (IsList())
2905         return false;
2906
2907     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2908     if (!node)
2909         return false;
2910
2911     if (!node->HasChildren())
2912     {
2913         delete node;
2914         return false;
2915     }
2916
2917     return node->IsOpen();
2918 }
2919
2920 bool wxDataViewMainWindow::HasChildren( unsigned int row ) const
2921 {
2922     if (IsList())
2923         return false;
2924
2925     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2926     if (!node)
2927         return false;
2928
2929     if (!node->HasChildren())
2930     {
2931         delete node;
2932         return false;
2933     }
2934
2935     return true;
2936 }
2937
2938 void wxDataViewMainWindow::Expand( unsigned int row )
2939 {
2940     if (IsList())
2941         return;
2942
2943     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2944     if (!node)
2945         return;
2946
2947     if (!node->HasChildren())
2948     {
2949         delete node;
2950         return;
2951     }
2952
2953             if (!node->IsOpen())
2954             {
2955                 wxDataViewEvent e =
2956                     SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, node->GetItem());
2957
2958                 // Check if the user prevent expanding
2959                 if( e.GetSkipped() )
2960                     return;
2961
2962                 node->ToggleOpen();
2963
2964                 // build the children of current node
2965                 if( node->GetChildrenNumber() == 0 )
2966                 {
2967                     SortPrepare();
2968                     ::BuildTreeHelper(GetOwner()->GetModel(), node->GetItem(), node);
2969                 }
2970
2971                 // By expanding the node all row indices that are currently in the selection list
2972                 // and are greater than our node have become invalid. So we have to correct that now.
2973                 const unsigned rowAdjustment = node->GetSubTreeCount();
2974                 for(unsigned i=0; i<m_selection.size(); ++i)
2975                 {
2976                     const unsigned testRow = m_selection[i];
2977                     // all rows above us are not affected, so skip them
2978                     if(testRow <= row)
2979                         continue;
2980
2981                     m_selection[i] += rowAdjustment;
2982                 }
2983
2984                 if(m_currentRow > row)
2985                     ChangeCurrentRow(m_currentRow + rowAdjustment);
2986
2987                 m_count = -1;
2988                 UpdateDisplay();
2989                 // Send the expanded event
2990                 SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED,node->GetItem());
2991             }
2992 }
2993
2994 void wxDataViewMainWindow::Collapse(unsigned int row)
2995 {
2996     if (IsList())
2997         return;
2998
2999     wxDataViewTreeNode *node = GetTreeNodeByRow(row);
3000     if (!node)
3001         return;
3002
3003     if (!node->HasChildren())
3004     {
3005         delete node;
3006         return;
3007     }
3008
3009         if (node->IsOpen())
3010         {
3011             wxDataViewEvent e =
3012                 SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING,node->GetItem());
3013             if( e.GetSkipped() )
3014                 return;
3015
3016             // Find out if there are selected items below the current node.
3017             bool selectCollapsingRow = false;
3018             const unsigned rowAdjustment = node->GetSubTreeCount();
3019             unsigned maxRowToBeTested = row + rowAdjustment;
3020             for(unsigned i=0; i<m_selection.size(); ++i)
3021             {
3022                 const unsigned testRow = m_selection[i];
3023                 if(testRow > row && testRow <= maxRowToBeTested)
3024                 {
3025                     selectCollapsingRow = true;
3026                     // get out as soon as we have found a node that is selected
3027                     break;
3028                 }
3029             }
3030
3031             node->ToggleOpen();
3032
3033             // If the node to be closed has selected items the user won't see those any longer.
3034             // We select the collapsing node in this case.
3035             if(selectCollapsingRow)
3036             {
3037                 SelectAllRows(false);
3038                 ChangeCurrentRow(row);
3039                 SelectRow(row, true);
3040                 SendSelectionChangedEvent(GetItemByRow(row));
3041             }
3042             else
3043             {
3044                 // if there were no selected items below our node we still need to "fix" the
3045                 // selection list to adjust for the changing of the row indices.
3046                 // We actually do the opposite of what we are doing in Expand().
3047                 for(unsigned i=0; i<m_selection.size(); ++i)
3048                 {
3049                     const unsigned testRow = m_selection[i];
3050                     // all rows above us are not affected, so skip them
3051                     if(testRow <= row)
3052                         continue;
3053
3054                     m_selection[i] -= rowAdjustment;
3055                 }
3056
3057                 // if the "current row" is being collapsed away we change it to the current row ;-)
3058                 if(m_currentRow > row && m_currentRow <= maxRowToBeTested)
3059                     ChangeCurrentRow(row);
3060                 else if(m_currentRow > row)
3061                     ChangeCurrentRow(m_currentRow - rowAdjustment);
3062             }
3063
3064             m_count = -1;
3065             UpdateDisplay();
3066             SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED,node->GetItem());
3067         }
3068 }
3069
3070 wxDataViewTreeNode * wxDataViewMainWindow::FindNode( const wxDataViewItem & item )
3071 {
3072     const wxDataViewModel * model = GetOwner()->GetModel();
3073     if( model == NULL )
3074         return NULL;
3075
3076     if (!item.IsOk())
3077         return m_root;
3078
3079     // Compose the parent-chain for the item we are looking for
3080     wxVector<wxDataViewItem> parentChain;
3081     wxDataViewItem it( item );
3082     while( it.IsOk() )
3083     {
3084         parentChain.push_back(it);
3085         it = model->GetParent(it);
3086     }
3087
3088     // Find the item along the parent-chain.
3089     // This algorithm is designed to speed up the node-finding method
3090     wxDataViewTreeNode* node = m_root;
3091     for( unsigned iter = parentChain.size()-1; ; --iter )
3092     {
3093         if( node->HasChildren() )
3094         {
3095             if( node->GetChildrenNumber() == 0 )
3096             {
3097                 SortPrepare();
3098                 ::BuildTreeHelper(model, node->GetItem(), node);
3099             }
3100
3101             const wxDataViewTreeNodes& nodes = node->GetNodes();
3102             bool found = false;
3103
3104             for (unsigned i = 0; i < nodes.GetCount(); ++i)
3105             {
3106                 wxDataViewTreeNode* currentNode = nodes[i];
3107                 if (currentNode->GetItem() == parentChain[iter])
3108                 {
3109                     if (currentNode->GetItem() == item)
3110                         return currentNode;
3111
3112                     node = currentNode;
3113                     found = true;
3114                     break;
3115                 }
3116             }
3117             if (!found)
3118                 return NULL;
3119         }
3120         else
3121             return NULL;
3122
3123         if ( !iter )
3124             break;
3125     }
3126     return NULL;
3127 }
3128
3129 void wxDataViewMainWindow::HitTest( const wxPoint & point, wxDataViewItem & item,
3130                                     wxDataViewColumn* &column )
3131 {
3132     wxDataViewColumn *col = NULL;
3133     unsigned int cols = GetOwner()->GetColumnCount();
3134     unsigned int colnum = 0;
3135     int x, y;
3136     m_owner->CalcUnscrolledPosition( point.x, point.y, &x, &y );
3137     for (unsigned x_start = 0; colnum < cols; colnum++)
3138     {
3139         col = GetOwner()->GetColumnAt(colnum);
3140         if (col->IsHidden())
3141             continue;      // skip it!
3142
3143         unsigned int w = col->GetWidth();
3144         if (x_start+w >= (unsigned int)x)
3145             break;
3146
3147         x_start += w;
3148     }
3149
3150     column = col;
3151     item = GetItemByRow( GetLineAt( y ) );
3152 }
3153
3154 wxRect wxDataViewMainWindow::GetItemRect( const wxDataViewItem & item,
3155                                           const wxDataViewColumn* column )
3156 {
3157     int xpos = 0;
3158     int width = 0;
3159
3160     unsigned int cols = GetOwner()->GetColumnCount();
3161     // If column is null the loop will compute the combined width of all columns.
3162     // Otherwise, it will compute the x position of the column we are looking for.
3163     for (unsigned int i = 0; i < cols; i++)
3164     {
3165         wxDataViewColumn* col = GetOwner()->GetColumnAt( i );
3166
3167         if (col == column)
3168             break;
3169
3170         if (col->IsHidden())
3171             continue;      // skip it!
3172
3173         xpos += col->GetWidth();
3174         width += col->GetWidth();
3175     }
3176
3177     if(column != 0)
3178     {
3179         // If we have a column, we need can get its width directly.
3180         if(column->IsHidden())
3181             width = 0;
3182         else
3183             width = column->GetWidth();
3184
3185     }
3186     else
3187     {
3188         // If we have no column, we reset the x position back to zero.
3189         xpos = 0;
3190     }
3191
3192     // we have to take an expander column into account and compute its indentation
3193     // to get the correct x position where the actual text is
3194     int indent = 0;
3195     int row = GetRowByItem(item);
3196     if (!IsList() && (column == 0 || GetOwner()->GetExpanderColumn() == column) )
3197     {
3198         wxDataViewTreeNode* node = GetTreeNodeByRow(row);
3199         indent = GetOwner()->GetIndent() * node->GetIndentLevel();
3200         indent = indent + m_lineHeight; // use m_lineHeight as the width of the expander
3201
3202         if(!node->HasChildren())
3203             delete node;
3204     }
3205
3206     wxRect itemRect( xpos + indent,
3207                      GetLineStart( row ),
3208                      width - indent,
3209                      GetLineHeight( row ) );
3210
3211     GetOwner()->CalcScrolledPosition(  itemRect.x,  itemRect.y,
3212                                       &itemRect.x, &itemRect.y );
3213
3214     return itemRect;
3215 }
3216
3217 int wxDataViewMainWindow::RecalculateCount()
3218 {
3219     if (IsVirtualList())
3220     {
3221         wxDataViewVirtualListModel *list_model =
3222             (wxDataViewVirtualListModel*) GetOwner()->GetModel();
3223
3224         return list_model->GetCount();
3225     }
3226     else
3227     {
3228         return m_root->GetSubTreeCount();
3229     }
3230 }
3231
3232 class ItemToRowJob : public DoJob
3233 {
3234 public:
3235     ItemToRowJob(const wxDataViewItem& item_, wxVector<wxDataViewItem>::reverse_iterator iter)
3236         : m_iter(iter),
3237         item(item_)
3238     {
3239         ret = -1;
3240     }
3241
3242     // Maybe binary search will help to speed up this process
3243     virtual int operator() ( wxDataViewTreeNode * node)
3244     {
3245         ret ++;
3246         if( node->GetItem() == item )
3247         {
3248             return DoJob::OK;
3249         }
3250
3251         if( node->GetItem() == *m_iter )
3252         {
3253             m_iter++;
3254             return DoJob::CONT;
3255         }
3256         else
3257         {
3258             ret += node->GetSubTreeCount();
3259             return DoJob::IGR;
3260         }
3261
3262     }
3263
3264     virtual int operator() ( void * n )
3265     {
3266         ret ++;
3267         if( n == item.GetID() )
3268             return DoJob::OK;
3269         return DoJob::CONT;
3270     }
3271
3272     // the row number is begin from zero
3273     int GetResult() const
3274         { return ret -1; }
3275
3276 private:
3277     wxVector<wxDataViewItem>::reverse_iterator m_iter;
3278     wxDataViewItem item;
3279     int ret;
3280
3281 };
3282
3283 int wxDataViewMainWindow::GetRowByItem(const wxDataViewItem & item) const
3284 {
3285     const wxDataViewModel * model = GetOwner()->GetModel();
3286     if( model == NULL )
3287         return -1;
3288
3289     if (IsVirtualList())
3290     {
3291         return wxPtrToUInt( item.GetID() ) -1;
3292     }
3293     else
3294     {
3295         if( !item.IsOk() )
3296             return -1;
3297
3298         // Compose the parent-chain of the item we are looking for
3299         wxVector<wxDataViewItem> parentChain;
3300         wxDataViewItem it( item );
3301         while( it.IsOk() )
3302         {
3303             parentChain.push_back(it);
3304             it = model->GetParent(it);
3305         }
3306
3307         // add an 'invalid' item to represent our 'invisible' root node
3308         parentChain.push_back(wxDataViewItem());
3309
3310         // the parent chain was created by adding the deepest parent first.
3311         // so if we want to start at the root node, we have to iterate backwards through the vector
3312         ItemToRowJob job( item, parentChain.rbegin() );
3313         Walker( m_root, job );
3314         return job.GetResult();
3315     }
3316 }
3317
3318 static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
3319                              wxDataViewTreeNode * node)
3320 {
3321     if( !model->IsContainer( item ) )
3322         return;
3323
3324     wxDataViewItemArray children;
3325     unsigned int num = model->GetChildren( item, children);
3326
3327     unsigned int index = 0;
3328     while( index < num )
3329     {
3330         if( model->IsContainer( children[index] ) )
3331         {
3332             wxDataViewTreeNode * n = new wxDataViewTreeNode( node );
3333             n->SetItem(children[index]);
3334             n->SetHasChildren( true );
3335             node->AddNode( n );
3336         }
3337         else
3338         {
3339             node->AddLeaf( children[index].GetID() );
3340         }
3341         index ++;
3342     }
3343     node->SetSubTreeCount( num );
3344     wxDataViewTreeNode * n = node->GetParent();
3345     if( n != NULL)
3346         n->ChangeSubTreeCount(num);
3347
3348 }
3349
3350 void wxDataViewMainWindow::BuildTree(wxDataViewModel * model)
3351 {
3352     DestroyTree();
3353
3354     if (GetOwner()->GetModel()->IsVirtualListModel())
3355     {
3356         m_count = -1;
3357         return;
3358     }
3359
3360     m_root = new wxDataViewTreeNode( NULL );
3361     m_root->SetHasChildren(true);
3362
3363     // First we define a invalid item to fetch the top-level elements
3364     wxDataViewItem item;
3365     SortPrepare();
3366     BuildTreeHelper( model, item, m_root);
3367     m_count = -1;
3368 }
3369
3370 static void DestroyTreeHelper( wxDataViewTreeNode * node )
3371 {
3372     if( node->GetNodeNumber() != 0 )
3373     {
3374         int len = node->GetNodeNumber();
3375         wxDataViewTreeNodes& nodes = node->GetNodes();
3376         for (int i = 0; i < len; i++)
3377             DestroyTreeHelper(nodes[i]);
3378     }
3379     delete node;
3380 }
3381
3382 void wxDataViewMainWindow::DestroyTree()
3383 {
3384     if (!IsVirtualList())
3385     {
3386         ::DestroyTreeHelper(m_root);
3387             m_count = 0;
3388             m_root = NULL;
3389     }
3390 }
3391
3392 void wxDataViewMainWindow::OnChar( wxKeyEvent &event )
3393 {
3394     wxWindow * const parent = GetParent();
3395
3396     // propagate the char event upwards
3397     wxKeyEvent eventForParent(event);
3398     eventForParent.SetEventObject(parent);
3399     if ( parent->ProcessWindowEvent(eventForParent) )
3400         return;
3401
3402     if ( parent->HandleAsNavigationKey(event) )
3403         return;
3404
3405     // no item -> nothing to do
3406     if (!HasCurrentRow())
3407     {
3408         event.Skip();
3409         return;
3410     }
3411
3412     // don't use m_linesPerPage directly as it might not be computed yet
3413     const int pageSize = GetCountPerPage();
3414     wxCHECK_RET( pageSize, wxT("should have non zero page size") );
3415
3416     switch ( event.GetKeyCode() )
3417     {
3418         case WXK_RETURN:
3419             {
3420                 wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED,
3421                                    parent->GetId());
3422                 le.SetItem( GetItemByRow(m_currentRow) );
3423                 le.SetEventObject(parent);
3424                 le.SetModel(GetOwner()->GetModel());
3425
3426                 parent->GetEventHandler()->ProcessEvent(le);
3427             }
3428             break;
3429
3430         case WXK_UP:
3431             if ( m_currentRow > 0 )
3432                 OnArrowChar( m_currentRow - 1, event );
3433             break;
3434
3435         case WXK_DOWN:
3436             if ( m_currentRow + 1 < GetRowCount() )
3437                 OnArrowChar( m_currentRow + 1, event );
3438             break;
3439         // Add the process for tree expanding/collapsing
3440         case WXK_LEFT:
3441         {
3442             if (IsList())
3443                break;
3444
3445             wxDataViewTreeNode* node = GetTreeNodeByRow(m_currentRow);
3446             if (!node)
3447                 break;
3448
3449             if (node->HasChildren() && node->IsOpen())
3450             {
3451                 Collapse(m_currentRow);
3452             }
3453             else    // if the node is already closed we move the selection to its parent
3454             {
3455                 wxDataViewTreeNode *parent_node = node->GetParent();
3456
3457                 if(!node->HasChildren())
3458                     delete node;
3459
3460                 if (parent_node)
3461                 {
3462                     int parent = GetRowByItem( parent_node->GetItem() );
3463                     if ( parent >= 0 )
3464                     {
3465                         unsigned int row = m_currentRow;
3466                         SelectRow( row, false);
3467                         SelectRow( parent, true );
3468                         ChangeCurrentRow( parent );
3469                         GetOwner()->EnsureVisible( parent, -1 );
3470                         SendSelectionChangedEvent( parent_node->GetItem() );
3471                     }
3472                 }
3473             }
3474             break;
3475         }
3476         case WXK_RIGHT:
3477         {
3478             if (!IsExpanded( m_currentRow ))
3479                 Expand( m_currentRow );
3480             else
3481             {
3482                 unsigned int row = m_currentRow;
3483                 SelectRow( row, false );
3484                 SelectRow( row + 1, true );
3485                 ChangeCurrentRow( row + 1 );
3486                 GetOwner()->EnsureVisible( row + 1, -1 );
3487                 SendSelectionChangedEvent( GetItemByRow(row+1) );
3488             }
3489             break;
3490         }
3491         case WXK_END:
3492         {
3493             if (!IsEmpty())
3494                 OnArrowChar( GetRowCount() - 1, event );
3495             break;
3496         }
3497         case WXK_HOME:
3498             if (!IsEmpty())
3499                 OnArrowChar( 0, event );
3500             break;
3501
3502         case WXK_PAGEUP:
3503             {
3504                 int steps = pageSize - 1;
3505                 int index = m_currentRow - steps;
3506                 if (index < 0)
3507                     index = 0;
3508
3509                 OnArrowChar( index, event );
3510             }
3511             break;
3512
3513         case WXK_PAGEDOWN:
3514             {
3515                 int steps = pageSize - 1;
3516                 unsigned int index = m_currentRow + steps;
3517                 unsigned int count = GetRowCount();
3518                 if ( index >= count )
3519                     index = count - 1;
3520
3521                 OnArrowChar( index, event );
3522             }
3523             break;
3524
3525         case WXK_F2:
3526             {
3527                 if(m_selection.size() == 1)
3528                 {
3529                     // TODO: we need to revise that when we have a concept for a 'current column'
3530                     GetOwner()->StartEditor(GetItemByRow(m_selection[0]), 0);
3531                 }
3532             }
3533             break;
3534
3535         default:
3536             event.Skip();
3537     }
3538 }
3539
3540 void wxDataViewMainWindow::OnMouse( wxMouseEvent &event )
3541 {
3542     if (event.GetEventType() == wxEVT_MOUSEWHEEL)
3543     {
3544         // let the base handle mouse wheel events.
3545         event.Skip();
3546         return;
3547     }
3548
3549     // set the focus to ourself if any of the mouse buttons are pressed
3550     if(event.ButtonDown() && !HasFocus())
3551         SetFocus();
3552
3553     int x = event.GetX();
3554     int y = event.GetY();
3555     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
3556     wxDataViewColumn *col = NULL;
3557
3558     int xpos = 0;
3559     unsigned int cols = GetOwner()->GetColumnCount();
3560     unsigned int i;
3561     for (i = 0; i < cols; i++)
3562     {
3563         wxDataViewColumn *c = GetOwner()->GetColumnAt( i );
3564         if (c->IsHidden())
3565             continue;      // skip it!
3566
3567         if (x < xpos + c->GetWidth())
3568         {
3569             col = c;
3570             break;
3571         }
3572         xpos += c->GetWidth();
3573     }
3574     if (!col)
3575     {
3576         event.Skip();
3577         return;
3578     }
3579
3580     wxDataViewRenderer *cell = col->GetRenderer();
3581     unsigned int current = GetLineAt( y );
3582     if ((current >= GetRowCount()) || (x > GetEndOfLastCol()))
3583     {
3584         // Unselect all if below the last row ?
3585         event.Skip();
3586         return;
3587     }
3588
3589     // Test whether the mouse is hovering over the expander (a.k.a tree "+"
3590     // button) and also determine the offset of the real cell start, skipping
3591     // the indentation and the expander itself.
3592     bool hoverOverExpander = false;
3593     int expanderOffset = 0;
3594     if ((!IsList()) && (GetOwner()->GetExpanderColumn() == col))
3595     {
3596         wxDataViewTreeNode * node = GetTreeNodeByRow(current);
3597         if( node!=NULL && node->HasChildren() )
3598         {
3599             int indent = node->GetIndentLevel();
3600             indent = GetOwner()->GetIndent()*indent;
3601
3602             // we make the rectangle we are looking in a bit bigger than the actual
3603             // visual expander so the user can hit that little thing reliably
3604             wxRect rect( xpos + indent,
3605                         GetLineStart( current ) + (GetLineHeight(current) - m_lineHeight)/2,
3606                         m_lineHeight, m_lineHeight);
3607
3608             expanderOffset = indent + m_lineHeight;
3609
3610             if( rect.Contains(x, y) )
3611             {
3612                 // So the mouse is over the expander
3613                 hoverOverExpander = true;
3614                 if (m_underMouse && m_underMouse != node)
3615                 {
3616                     // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
3617                     RefreshRow(GetRowByItem(m_underMouse->GetItem()));
3618                 }
3619                 if (m_underMouse != node)
3620                 {
3621                     // wxLogMessage("Do the row: %d", current);
3622                     RefreshRow(current);
3623                 }
3624                 m_underMouse = node;
3625             }
3626         }
3627         if (node!=NULL && !node->HasChildren())
3628             delete node;
3629     }
3630     if (!hoverOverExpander)
3631     {
3632         if (m_underMouse != NULL)
3633         {
3634             // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
3635             RefreshRow(GetRowByItem(m_underMouse->GetItem()));
3636             m_underMouse = NULL;
3637         }
3638     }
3639
3640     wxDataViewModel *model = GetOwner()->GetModel();
3641
3642 #if wxUSE_DRAG_AND_DROP
3643     if (event.Dragging())
3644     {
3645         if (m_dragCount == 0)
3646         {
3647             // we have to report the raw, physical coords as we want to be
3648             // able to call HitTest(event.m_pointDrag) from the user code to
3649             // get the item being dragged
3650             m_dragStart = event.GetPosition();
3651         }
3652
3653         m_dragCount++;
3654
3655         if (m_dragCount != 3)
3656             return;
3657
3658         if (event.LeftIsDown())
3659         {
3660             m_owner->CalcUnscrolledPosition( m_dragStart.x, m_dragStart.y,
3661                                              &m_dragStart.x, &m_dragStart.y );
3662             unsigned int drag_item_row = GetLineAt( m_dragStart.y );
3663             wxDataViewItem item = GetItemByRow( drag_item_row );
3664
3665             // Notify cell about drag
3666             wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_BEGIN_DRAG, m_owner->GetId() );
3667             event.SetEventObject( m_owner );
3668             event.SetItem( item );
3669             event.SetModel( model );
3670             if (!m_owner->HandleWindowEvent( event ))
3671                 return;
3672
3673             if (!event.IsAllowed())
3674                 return;
3675
3676             wxDataObject *obj = event.GetDataObject();
3677             if (!obj)
3678                 return;
3679
3680             wxDataViewDropSource drag( this, drag_item_row );
3681             drag.SetData( *obj );
3682             /* wxDragResult res = */ drag.DoDragDrop();
3683             delete obj;
3684         }
3685         return;
3686     }
3687     else
3688     {
3689         m_dragCount = 0;
3690     }
3691 #endif // wxUSE_DRAG_AND_DROP
3692
3693     bool simulateClick = false;
3694
3695     if (event.ButtonDClick())
3696     {
3697         m_renameTimer->Stop();
3698         m_lastOnSame = false;
3699     }
3700
3701     wxDataViewItem item = GetItemByRow(current);
3702     bool ignore_other_columns =
3703         ((GetOwner()->GetExpanderColumn() != col) &&
3704         (model->IsContainer(item)) &&
3705         (!model->HasContainerColumns(item)));
3706
3707     if (event.LeftDClick())
3708     {
3709         if(hoverOverExpander)
3710         {
3711             // a double click on the expander will be converted into a "simulated" normal click
3712             simulateClick = true;
3713         }
3714         else if ( current == m_lineLastClicked )
3715         {
3716             if ((!ignore_other_columns) && (cell->GetMode() == wxDATAVIEW_CELL_ACTIVATABLE))
3717             {
3718                 const unsigned colIdx = col->GetModelColumn();
3719
3720                 cell->PrepareForItem(model, item, colIdx);
3721
3722                 wxRect cell_rect( xpos, GetLineStart( current ),
3723                                 col->GetWidth(), GetLineHeight( current ) );
3724                 cell->WXOnActivate( cell_rect, model, item, colIdx );
3725             }
3726             else
3727             {
3728                 wxWindow *parent = GetParent();
3729                 wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED, parent->GetId());
3730                 le.SetItem( item );
3731                 le.SetColumn( col->GetModelColumn() );
3732                 le.SetDataViewColumn( col );
3733                 le.SetEventObject(parent);
3734                 le.SetModel(GetOwner()->GetModel());
3735
3736                 parent->GetEventHandler()->ProcessEvent(le);
3737             }
3738             return;
3739         }
3740         else
3741         {
3742             // The first click was on another item, so don't interpret this as
3743             // a double click, but as a simple click instead
3744             simulateClick = true;
3745         }
3746     }
3747
3748     if (event.LeftUp() && !hoverOverExpander)
3749     {
3750         if (m_lineSelectSingleOnUp != (unsigned int)-1)
3751         {
3752             // select single line
3753             SelectAllRows( false );
3754             SelectRow( m_lineSelectSingleOnUp, true );
3755             SendSelectionChangedEvent( GetItemByRow(m_lineSelectSingleOnUp) );
3756         }
3757
3758         // If the user click the expander, we do not do editing even if the column
3759         // with expander are editable
3760         if (m_lastOnSame && !ignore_other_columns)
3761         {
3762             if ((col == m_currentCol) && (current == m_currentRow) &&
3763                 (cell->GetMode() & wxDATAVIEW_CELL_EDITABLE) )
3764             {
3765                 m_renameTimer->Start( 100, true );
3766             }
3767         }
3768
3769         m_lastOnSame = false;
3770         m_lineSelectSingleOnUp = (unsigned int)-1;
3771     }
3772     else if(!event.LeftUp())
3773     {
3774         // This is necessary, because after a DnD operation in
3775         // from and to ourself, the up event is swallowed by the
3776         // DnD code. So on next non-up event (which means here and
3777         // now) m_lineSelectSingleOnUp should be reset.
3778         m_lineSelectSingleOnUp = (unsigned int)-1;
3779     }
3780
3781     if (event.RightDown())
3782     {
3783         m_lineBeforeLastClicked = m_lineLastClicked;
3784         m_lineLastClicked = current;
3785
3786         // If the item is already selected, do not update the selection.
3787         // Multi-selections should not be cleared if a selected item is clicked.
3788         if (!IsRowSelected(current))
3789         {
3790             SelectAllRows(false);
3791             const unsigned oldCurrent = m_currentRow;
3792             ChangeCurrentRow(current);
3793             SelectRow(m_currentRow,true);
3794             RefreshRow(oldCurrent);
3795             SendSelectionChangedEvent(GetItemByRow( m_currentRow ) );
3796         }
3797     }
3798     else if (event.RightUp())
3799     {
3800         wxVariant value;
3801         model->GetValue( value, item, col->GetModelColumn() );
3802         wxWindow *parent = GetParent();
3803         wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_CONTEXT_MENU, parent->GetId());
3804         le.SetItem( item );
3805         le.SetColumn( col->GetModelColumn() );
3806         le.SetDataViewColumn( col );
3807         le.SetEventObject(parent);
3808         le.SetModel(GetOwner()->GetModel());
3809         le.SetValue(value);
3810         parent->GetEventHandler()->ProcessEvent(le);
3811     }
3812     else if (event.MiddleDown())
3813     {
3814     }
3815
3816     if((event.LeftDown() || simulateClick) && hoverOverExpander)
3817     {
3818         wxDataViewTreeNode* node = GetTreeNodeByRow(current);
3819
3820         // hoverOverExpander being true tells us that our node must be
3821         // valid and have children.
3822         // So we don't need any extra checks.
3823         if( node->IsOpen() )
3824             Collapse(current);
3825         else
3826             Expand(current);
3827     }
3828     else if ((event.LeftDown() || simulateClick) && !hoverOverExpander)
3829     {
3830         m_lineBeforeLastClicked = m_lineLastClicked;
3831         m_lineLastClicked = current;
3832
3833         unsigned int oldCurrentRow = m_currentRow;
3834         bool oldWasSelected = IsRowSelected(m_currentRow);
3835
3836         bool cmdModifierDown = event.CmdDown();
3837         if ( IsSingleSel() || !(cmdModifierDown || event.ShiftDown()) )
3838         {
3839             if ( IsSingleSel() || !IsRowSelected(current) )
3840             {
3841                 SelectAllRows( false );
3842                 ChangeCurrentRow(current);
3843                 SelectRow(m_currentRow,true);
3844                 SendSelectionChangedEvent(GetItemByRow( m_currentRow ) );
3845             }
3846             else // multi sel & current is highlighted & no mod keys
3847             {
3848                 m_lineSelectSingleOnUp = current;
3849                 ChangeCurrentRow(current); // change focus
3850             }
3851         }
3852         else // multi sel & either ctrl or shift is down
3853         {
3854             if (cmdModifierDown)
3855             {
3856                 ChangeCurrentRow(current);
3857                 ReverseRowSelection(m_currentRow);
3858                 SendSelectionChangedEvent(GetItemByRow(m_currentRow));
3859             }
3860             else if (event.ShiftDown())
3861             {
3862                 ChangeCurrentRow(current);
3863
3864                 unsigned int lineFrom = oldCurrentRow,
3865                     lineTo = current;
3866
3867                 if ( lineTo < lineFrom )
3868                 {
3869                     lineTo = lineFrom;
3870                     lineFrom = m_currentRow;
3871                 }
3872
3873                 SelectRows(lineFrom, lineTo, true);
3874                 SendSelectionChangedEvent(GetItemByRow(m_selection[0]) );
3875             }
3876             else // !ctrl, !shift
3877             {
3878                 // test in the enclosing if should make it impossible
3879                 wxFAIL_MSG( wxT("how did we get here?") );
3880             }
3881         }
3882
3883         if (m_currentRow != oldCurrentRow)
3884             RefreshRow( oldCurrentRow );
3885
3886         wxDataViewColumn *oldCurrentCol = m_currentCol;
3887
3888         // Update selection here...
3889         m_currentCol = col;
3890
3891         m_lastOnSame = !simulateClick && ((col == oldCurrentCol) &&
3892                         (current == oldCurrentRow)) && oldWasSelected;
3893
3894         // Call LeftClick after everything else as under GTK+
3895         if (cell->GetMode() & wxDATAVIEW_CELL_ACTIVATABLE)
3896         {
3897             // notify cell about click
3898             cell->PrepareForItem(model, item, col->GetModelColumn());
3899
3900             wxRect cell_rect( xpos + expanderOffset,
3901                               GetLineStart( current ),
3902                               col->GetWidth() - expanderOffset,
3903                               GetLineHeight( current ) );
3904
3905             // Report position relative to the cell's custom area, i.e.
3906             // no the entire space as given by the control but the one
3907             // used by the renderer after calculation of alignment etc.
3908
3909             // adjust the rectangle ourselves to account for the alignment
3910             wxRect rectItem = cell_rect;
3911             const int align = cell->GetAlignment();
3912             if ( align != wxDVR_DEFAULT_ALIGNMENT )
3913             {
3914                 const wxSize size = cell->GetSize();
3915
3916                 if ( size.x >= 0 && size.x < cell_rect.width )
3917                 {
3918                     if ( align & wxALIGN_CENTER_HORIZONTAL )
3919                         rectItem.x += (cell_rect.width - size.x)/2;
3920                     else if ( align & wxALIGN_RIGHT )
3921                         rectItem.x += cell_rect.width - size.x;
3922                     // else: wxALIGN_LEFT is the default
3923                 }
3924
3925                 if ( size.y >= 0 && size.y < cell_rect.height )
3926                 {
3927                     if ( align & wxALIGN_CENTER_VERTICAL )
3928                         rectItem.y += (cell_rect.height - size.y)/2;
3929                     else if ( align & wxALIGN_BOTTOM )
3930                         rectItem.y += cell_rect.height - size.y;
3931                     // else: wxALIGN_TOP is the default
3932                 }
3933             }
3934
3935             wxPoint pos( event.GetPosition() );
3936             pos.x -= rectItem.x;
3937             pos.y -= rectItem.y;
3938
3939             m_owner->CalcUnscrolledPosition( pos.x, pos.y, &pos.x, &pos.y );
3940
3941              /* ignore ret */ cell->WXOnLeftClick( pos, cell_rect,
3942                               model, item, col->GetModelColumn());
3943         }
3944     }
3945 }
3946
3947 void wxDataViewMainWindow::OnSetFocus( wxFocusEvent &event )
3948 {
3949     m_hasFocus = true;
3950
3951     if (HasCurrentRow())
3952         Refresh();
3953
3954     event.Skip();
3955 }
3956
3957 void wxDataViewMainWindow::OnKillFocus( wxFocusEvent &event )
3958 {
3959     m_hasFocus = false;
3960
3961     if (HasCurrentRow())
3962         Refresh();
3963
3964     event.Skip();
3965 }
3966
3967 //-----------------------------------------------------------------------------
3968 // wxDataViewCtrl
3969 //-----------------------------------------------------------------------------
3970
3971 WX_DEFINE_LIST(wxDataViewColumnList)
3972
3973 IMPLEMENT_DYNAMIC_CLASS(wxDataViewCtrl, wxDataViewCtrlBase)
3974 BEGIN_EVENT_TABLE(wxDataViewCtrl, wxDataViewCtrlBase)
3975     EVT_SIZE(wxDataViewCtrl::OnSize)
3976 END_EVENT_TABLE()
3977
3978 wxDataViewCtrl::~wxDataViewCtrl()
3979 {
3980     if (m_notifier)
3981         GetModel()->RemoveNotifier( m_notifier );
3982
3983     m_cols.Clear();
3984     m_colsBestWidths.clear();
3985 }
3986
3987 void wxDataViewCtrl::Init()
3988 {
3989     m_cols.DeleteContents(true);
3990     m_notifier = NULL;
3991
3992     // No sorting column at start
3993     m_sortingColumnIdx = wxNOT_FOUND;
3994
3995     m_headerArea = NULL;
3996 }
3997
3998 bool wxDataViewCtrl::Create(wxWindow *parent,
3999                             wxWindowID id,
4000                             const wxPoint& pos,
4001                             const wxSize& size,
4002                             long style,
4003                             const wxValidator& validator,
4004                             const wxString& name)
4005 {
4006 //    if ( (style & wxBORDER_MASK) == 0)
4007 //        style |= wxBORDER_SUNKEN;
4008
4009     Init();
4010
4011     if (!wxControl::Create( parent, id, pos, size,
4012                             style | wxScrolledWindowStyle, validator, name))
4013         return false;
4014
4015     SetInitialSize(size);
4016
4017 #ifdef __WXMAC__
4018     MacSetClipChildren( true );
4019 #endif
4020
4021     m_clientArea = new wxDataViewMainWindow( this, wxID_ANY );
4022
4023     // We use the cursor keys for moving the selection, not scrolling, so call
4024     // this method to ensure wxScrollHelperEvtHandler doesn't catch all
4025     // keyboard events forwarded to us from wxListMainWindow.
4026     DisableKeyboardScrolling();
4027
4028     if (HasFlag(wxDV_NO_HEADER))
4029         m_headerArea = NULL;
4030     else
4031         m_headerArea = new wxDataViewHeaderWindow(this);
4032
4033     SetTargetWindow( m_clientArea );
4034
4035     wxBoxSizer *sizer = new wxBoxSizer( wxVERTICAL );
4036     if (m_headerArea)
4037         sizer->Add( m_headerArea, 0, wxGROW );
4038     sizer->Add( m_clientArea, 1, wxGROW );
4039     SetSizer( sizer );
4040
4041     return true;
4042 }
4043
4044 wxBorder wxDataViewCtrl::GetDefaultBorder() const
4045 {
4046     return wxBORDER_THEME;
4047 }
4048
4049 #ifdef __WXMSW__
4050 WXLRESULT wxDataViewCtrl::MSWWindowProc(WXUINT nMsg,
4051                                         WXWPARAM wParam,
4052                                         WXLPARAM lParam)
4053 {
4054     WXLRESULT rc = wxDataViewCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
4055
4056 #ifndef __WXWINCE__
4057     // we need to process arrows ourselves for scrolling
4058     if ( nMsg == WM_GETDLGCODE )
4059     {
4060         rc |= DLGC_WANTARROWS;
4061     }
4062 #endif
4063
4064     return rc;
4065 }
4066 #endif
4067
4068 wxSize wxDataViewCtrl::GetSizeAvailableForScrollTarget(const wxSize& size)
4069 {
4070     wxSize newsize = size;
4071     if (!HasFlag(wxDV_NO_HEADER) && (m_headerArea))
4072     newsize.y -= m_headerArea->GetSize().y;
4073
4074     return newsize;
4075 }
4076
4077 void wxDataViewCtrl::OnSize( wxSizeEvent &WXUNUSED(event) )
4078 {
4079     // We need to override OnSize so that our scrolled
4080     // window a) does call Layout() to use sizers for
4081     // positioning the controls but b) does not query
4082     // the sizer for their size and use that for setting
4083     // the scrollable area as set that ourselves by
4084     // calling SetScrollbar() further down.
4085
4086     Layout();
4087
4088     AdjustScrollbars();
4089
4090     // We must redraw the headers if their height changed. Normally this
4091     // shouldn't happen as the control shouldn't let itself be resized beneath
4092     // its minimal height but avoid the display artefacts that appear if it
4093     // does happen, e.g. because there is really not enough vertical space.
4094     if ( !HasFlag(wxDV_NO_HEADER) && m_headerArea &&
4095             m_headerArea->GetSize().y <= m_headerArea->GetBestSize(). y )
4096     {
4097         m_headerArea->Refresh();
4098     }
4099 }
4100
4101 void wxDataViewCtrl::SetFocus()
4102 {
4103     if (m_clientArea)
4104         m_clientArea->SetFocus();
4105 }
4106
4107 bool wxDataViewCtrl::AssociateModel( wxDataViewModel *model )
4108 {
4109     if (!wxDataViewCtrlBase::AssociateModel( model ))
4110         return false;
4111
4112     m_notifier = new wxGenericDataViewModelNotifier( m_clientArea );
4113
4114     model->AddNotifier( m_notifier );
4115
4116     m_clientArea->DestroyTree();
4117
4118     m_clientArea->BuildTree(model);
4119
4120     m_clientArea->UpdateDisplay();
4121
4122     return true;
4123 }
4124
4125 #if wxUSE_DRAG_AND_DROP
4126
4127 bool wxDataViewCtrl::EnableDragSource( const wxDataFormat &format )
4128 {
4129     return m_clientArea->EnableDragSource( format );
4130 }
4131
4132 bool wxDataViewCtrl::EnableDropTarget( const wxDataFormat &format )
4133 {
4134     return m_clientArea->EnableDropTarget( format );
4135 }
4136
4137 #endif // wxUSE_DRAG_AND_DROP
4138
4139 bool wxDataViewCtrl::AppendColumn( wxDataViewColumn *col )
4140 {
4141     if (!wxDataViewCtrlBase::AppendColumn(col))
4142         return false;
4143
4144     m_cols.Append( col );
4145     m_colsBestWidths.push_back(0);
4146     OnColumnsCountChanged();
4147     return true;
4148 }
4149
4150 bool wxDataViewCtrl::PrependColumn( wxDataViewColumn *col )
4151 {
4152     if (!wxDataViewCtrlBase::PrependColumn(col))
4153         return false;
4154
4155     m_cols.Insert( col );
4156     m_colsBestWidths.insert(m_colsBestWidths.begin(), 0);
4157     OnColumnsCountChanged();
4158     return true;
4159 }
4160
4161 bool wxDataViewCtrl::InsertColumn( unsigned int pos, wxDataViewColumn *col )
4162 {
4163     if (!wxDataViewCtrlBase::InsertColumn(pos,col))
4164         return false;
4165
4166     m_cols.Insert( pos, col );
4167     m_colsBestWidths.insert(m_colsBestWidths.begin() + pos, 0);
4168     OnColumnsCountChanged();
4169     return true;
4170 }
4171
4172 void wxDataViewCtrl::OnColumnChange(unsigned int idx)
4173 {
4174     if ( m_headerArea )
4175         m_headerArea->UpdateColumn(idx);
4176
4177     m_clientArea->UpdateDisplay();
4178 }
4179
4180 void wxDataViewCtrl::OnColumnsCountChanged()
4181 {
4182     if (m_headerArea)
4183         m_headerArea->SetColumnCount(GetColumnCount());
4184
4185     m_clientArea->UpdateDisplay();
4186 }
4187
4188 void wxDataViewCtrl::DoSetExpanderColumn()
4189 {
4190     m_clientArea->UpdateDisplay();
4191 }
4192
4193 void wxDataViewCtrl::DoSetIndent()
4194 {
4195     m_clientArea->UpdateDisplay();
4196 }
4197
4198 unsigned int wxDataViewCtrl::GetColumnCount() const
4199 {
4200     return m_cols.GetCount();
4201 }
4202
4203 bool wxDataViewCtrl::SetRowHeight( int lineHeight )
4204 {
4205     if ( !m_clientArea )
4206         return false;
4207
4208     m_clientArea->SetRowHeight(lineHeight);
4209
4210     return true;
4211 }
4212
4213 wxDataViewColumn* wxDataViewCtrl::GetColumn( unsigned int idx ) const
4214 {
4215     return m_cols[idx];
4216 }
4217
4218 wxDataViewColumn *wxDataViewCtrl::GetColumnAt(unsigned int pos) const
4219 {
4220     // columns can't be reordered if there is no header window which allows
4221     // to do this
4222     const unsigned idx = m_headerArea ? m_headerArea->GetColumnsOrder()[pos]
4223                                     : pos;
4224
4225     return GetColumn(idx);
4226 }
4227
4228 int wxDataViewCtrl::GetColumnIndex(const wxDataViewColumn *column) const
4229 {
4230     const unsigned count = m_cols.size();
4231     for ( unsigned n = 0; n < count; n++ )
4232     {
4233         if ( m_cols[n] == column )
4234             return n;
4235     }
4236
4237     return wxNOT_FOUND;
4238 }
4239
4240 unsigned int wxDataViewCtrl::GetBestColumnWidth(int idx) const
4241 {
4242     if ( m_colsBestWidths[idx] != 0 )
4243         return m_colsBestWidths[idx];
4244
4245     const int count = m_clientArea->GetRowCount();
4246     wxDataViewColumn *column = GetColumn(idx);
4247     wxDataViewRenderer *renderer =
4248         const_cast<wxDataViewRenderer*>(column->GetRenderer());
4249
4250     class MaxWidthCalculator
4251     {
4252     public:
4253         MaxWidthCalculator(wxDataViewMainWindow *clientArea,
4254                            wxDataViewRenderer *renderer,
4255                            const wxDataViewModel *model,
4256                            unsigned column)
4257             : m_width(0),
4258               m_clientArea(clientArea),
4259               m_renderer(renderer),
4260               m_model(model),
4261               m_column(column)
4262         {
4263         }
4264
4265         void UpdateWithWidth(int width)
4266         {
4267             m_width = wxMax(m_width, width);
4268         }
4269
4270         void UpdateWithRow(int row)
4271         {
4272             wxDataViewItem item = m_clientArea->GetItemByRow(row);
4273             m_renderer->PrepareForItem(m_model, item, m_column);
4274             m_width = wxMax(m_width, m_renderer->GetSize().x);
4275         }
4276
4277         int GetMaxWidth() const { return m_width; }
4278
4279     private:
4280         int m_width;
4281         wxDataViewMainWindow *m_clientArea;
4282         wxDataViewRenderer *m_renderer;
4283         const wxDataViewModel *m_model;
4284         unsigned m_column;
4285     };
4286
4287     MaxWidthCalculator calculator(m_clientArea, renderer,
4288                                   GetModel(), column->GetModelColumn());
4289
4290     if ( m_headerArea )
4291     {
4292         int header_width = m_headerArea->GetTextExtent(column->GetTitle()).x;
4293         // Labels on native MSW header are indented on both sides
4294         header_width +=
4295             wxRendererNative::Get().GetHeaderButtonMargin(m_headerArea);
4296         calculator.UpdateWithWidth(header_width);
4297     }
4298
4299     // The code below deserves some explanation. For very large controls, we
4300     // simply can't afford to calculate sizes for all items, it takes too
4301     // long. So the best we can do is to check the first and the last N/2
4302     // items in the control for some sufficiently large N and calculate best
4303     // sizes from that. That can result in the calculated best width being too
4304     // small for some outliers, but it's better to get slightly imperfect
4305     // result than to wait several seconds after every update. To avoid highly
4306     // visible miscalculations, we also include all currently visible items
4307     // no matter what.  Finally, the value of N is determined dynamically by
4308     // measuring how much time we spent on the determining item widths so far.
4309
4310 #if wxUSE_STOPWATCH
4311     int top_part_end = count;
4312     static const long CALC_TIMEOUT = 20/*ms*/;
4313     // don't call wxStopWatch::Time() too often
4314     static const unsigned CALC_CHECK_FREQ = 100;
4315     wxStopWatch timer;
4316 #else
4317     // use some hard-coded limit, that's the best we can do without timer
4318     int top_part_end = wxMin(500, count);
4319 #endif // wxUSE_STOPWATCH/!wxUSE_STOPWATCH
4320
4321     int row = 0;
4322
4323     for ( row = 0; row < top_part_end; row++ )
4324     {
4325 #if wxUSE_STOPWATCH
4326         if ( row % CALC_CHECK_FREQ == CALC_CHECK_FREQ-1 &&
4327              timer.Time() > CALC_TIMEOUT )
4328             break;
4329 #endif // wxUSE_STOPWATCH
4330         calculator.UpdateWithRow(row);
4331     }
4332
4333     // row is the first unmeasured item now; that's our value of N/2
4334
4335     if ( row < count )
4336     {
4337         top_part_end = row;
4338
4339         // add bottom N/2 items now:
4340         const int bottom_part_start = wxMax(row, count - row);
4341         for ( row = bottom_part_start; row < count; row++ )
4342         {
4343             calculator.UpdateWithRow(row);
4344         }
4345
4346         // finally, include currently visible items in the calculation:
4347         const wxPoint origin = CalcUnscrolledPosition(wxPoint(0, 0));
4348         int first_visible = m_clientArea->GetLineAt(origin.y);
4349         int last_visible = m_clientArea->GetLineAt(origin.y + GetClientSize().y);
4350
4351         first_visible = wxMax(first_visible, top_part_end);
4352         last_visible = wxMin(bottom_part_start, last_visible);
4353
4354         for ( row = first_visible; row < last_visible; row++ )
4355         {
4356             calculator.UpdateWithRow(row);
4357         }
4358
4359         wxLogTrace("dataview",
4360                    "determined best size from %d top, %d bottom plus %d more visible items out of %d total",
4361                    top_part_end,
4362                    count - bottom_part_start,
4363                    wxMax(0, last_visible - first_visible),
4364                    count);
4365     }
4366
4367     int max_width = calculator.GetMaxWidth();
4368     if ( max_width > 0 )
4369         max_width += 2 * PADDING_RIGHTLEFT;
4370
4371     const_cast<wxDataViewCtrl*>(this)->m_colsBestWidths[idx] = max_width;
4372     return max_width;
4373 }
4374
4375 void wxDataViewCtrl::ColumnMoved(wxDataViewColumn * WXUNUSED(col),
4376                                 unsigned int WXUNUSED(new_pos))
4377 {
4378     // do _not_ reorder m_cols elements here, they should always be in the
4379     // order in which columns were added, we only display the columns in
4380     // different order
4381     m_clientArea->UpdateDisplay();
4382 }
4383
4384 bool wxDataViewCtrl::DeleteColumn( wxDataViewColumn *column )
4385 {
4386     wxDataViewColumnList::compatibility_iterator ret = m_cols.Find( column );
4387     if (!ret)
4388         return false;
4389
4390     m_colsBestWidths.erase(m_colsBestWidths.begin() + GetColumnIndex(column));
4391     m_cols.Erase(ret);
4392     OnColumnsCountChanged();
4393
4394     return true;
4395 }
4396
4397 bool wxDataViewCtrl::ClearColumns()
4398 {
4399     m_cols.Clear();
4400     m_colsBestWidths.clear();
4401     OnColumnsCountChanged();
4402     return true;
4403 }
4404
4405 void wxDataViewCtrl::UpdateColBestWidth(int idx)
4406 {
4407     m_colsBestWidths[idx] = 0;
4408
4409     if ( m_headerArea )
4410         m_headerArea->UpdateColumn(idx);
4411 }
4412
4413 void wxDataViewCtrl::UpdateColBestWidths()
4414 {
4415     m_colsBestWidths.clear();
4416     m_colsBestWidths.resize(m_cols.size());
4417
4418     if ( m_headerArea )
4419     {
4420         const unsigned cols = m_headerArea->GetColumnCount();
4421         for ( unsigned i = 0; i < cols; i++ )
4422             m_headerArea->UpdateColumn(i);
4423     }
4424 }
4425
4426 int wxDataViewCtrl::GetColumnPosition( const wxDataViewColumn *column ) const
4427 {
4428 #if 1
4429     unsigned int len = GetColumnCount();
4430     for ( unsigned int i = 0; i < len; i++ )
4431     {
4432         wxDataViewColumn * col = GetColumnAt(i);
4433         if (column==col)
4434             return i;
4435     }
4436
4437     return wxNOT_FOUND;
4438 #else
4439     // This returns the position in pixels which is not what we want.
4440     int ret = 0,
4441         dummy = 0;
4442     unsigned int len = GetColumnCount();
4443     for ( unsigned int i = 0; i < len; i++ )
4444     {
4445         wxDataViewColumn * col = GetColumnAt(i);
4446         if (col->IsHidden())
4447             continue;
4448         ret += col->GetWidth();
4449         if (column==col)
4450         {
4451             CalcScrolledPosition( ret, dummy, &ret, &dummy );
4452             break;
4453         }
4454     }
4455     return ret;
4456 #endif
4457 }
4458
4459 wxDataViewColumn *wxDataViewCtrl::GetSortingColumn() const
4460 {
4461     return m_sortingColumnIdx == wxNOT_FOUND ? NULL
4462                                             : GetColumn(m_sortingColumnIdx);
4463 }
4464
4465 wxDataViewItem wxDataViewCtrl::DoGetCurrentItem() const
4466 {
4467     return GetItemByRow(m_clientArea->GetCurrentRow());
4468 }
4469
4470 void wxDataViewCtrl::DoSetCurrentItem(const wxDataViewItem& item)
4471 {
4472     const int row = m_clientArea->GetRowByItem(item);
4473
4474     const unsigned oldCurrent = m_clientArea->GetCurrentRow();
4475     if ( static_cast<unsigned>(row) != oldCurrent )
4476     {
4477         m_clientArea->ChangeCurrentRow(row);
4478         m_clientArea->RefreshRow(oldCurrent);
4479         m_clientArea->RefreshRow(row);
4480     }
4481 }
4482
4483 int wxDataViewCtrl::GetSelectedItemsCount() const
4484 {
4485     return m_clientArea->GetSelections().size();
4486 }
4487
4488 int wxDataViewCtrl::GetSelections( wxDataViewItemArray & sel ) const
4489 {
4490     sel.Empty();
4491     const wxDataViewSelection& selections = m_clientArea->GetSelections();
4492
4493     const size_t len = selections.size();
4494     for ( size_t i = 0; i < len; i++ )
4495     {
4496         wxDataViewItem item = m_clientArea->GetItemByRow(selections[i]);
4497         if ( item.IsOk() )
4498         {
4499             sel.Add(item);
4500         }
4501         else
4502         {
4503             wxFAIL_MSG( "invalid item in selection - bad internal state" );
4504         }
4505     }
4506
4507     return sel.size();
4508 }
4509
4510 void wxDataViewCtrl::SetSelections( const wxDataViewItemArray & sel )
4511 {
4512     wxDataViewSelection selection(wxDataViewSelectionCmp);
4513
4514     wxDataViewItem last_parent;
4515
4516     int len = sel.GetCount();
4517     for( int i = 0; i < len; i ++ )
4518     {
4519         wxDataViewItem item = sel[i];
4520         wxDataViewItem parent = GetModel()->GetParent( item );
4521         if (parent)
4522         {
4523             if (parent != last_parent)
4524                 ExpandAncestors(item);
4525         }
4526
4527         last_parent = parent;
4528         int row = m_clientArea->GetRowByItem( item );
4529         if( row >= 0 )
4530             selection.Add( static_cast<unsigned int>(row) );
4531     }
4532
4533     m_clientArea->SetSelections( selection );
4534 }
4535
4536 void wxDataViewCtrl::Select( const wxDataViewItem & item )
4537 {
4538     ExpandAncestors( item );
4539
4540     int row = m_clientArea->GetRowByItem( item );
4541     if( row >= 0 )
4542     {
4543         // Unselect all rows before select another in the single select mode
4544         if (m_clientArea->IsSingleSel())
4545             m_clientArea->SelectAllRows(false);
4546
4547         m_clientArea->SelectRow(row, true);
4548
4549         // Also set focus to the selected item
4550         m_clientArea->ChangeCurrentRow( row );
4551     }
4552 }
4553
4554 void wxDataViewCtrl::Unselect( const wxDataViewItem & item )
4555 {
4556     int row = m_clientArea->GetRowByItem( item );
4557     if( row >= 0 )
4558         m_clientArea->SelectRow(row, false);
4559 }
4560
4561 bool wxDataViewCtrl::IsSelected( const wxDataViewItem & item ) const
4562 {
4563     int row = m_clientArea->GetRowByItem( item );
4564     if( row >= 0 )
4565     {
4566         return m_clientArea->IsRowSelected(row);
4567     }
4568     return false;
4569 }
4570
4571 void wxDataViewCtrl::SelectAll()
4572 {
4573     m_clientArea->SelectAllRows(true);
4574 }
4575
4576 void wxDataViewCtrl::UnselectAll()
4577 {
4578     m_clientArea->SelectAllRows(false);
4579 }
4580
4581 void wxDataViewCtrl::EnsureVisible( int row, int column )
4582 {
4583     if( row < 0 )
4584         row = 0;
4585     if( row > (int) m_clientArea->GetRowCount() )
4586         row = m_clientArea->GetRowCount();
4587
4588     int first = m_clientArea->GetFirstVisibleRow();
4589     int last = m_clientArea->GetLastVisibleRow();
4590     if( row < first )
4591         m_clientArea->ScrollTo( row, column );
4592     else if( row > last )
4593         m_clientArea->ScrollTo( row - last + first, column );
4594     else
4595         m_clientArea->ScrollTo( first, column );
4596 }
4597
4598 void wxDataViewCtrl::EnsureVisible( const wxDataViewItem & item, const wxDataViewColumn * column )
4599 {
4600     ExpandAncestors( item );
4601
4602     m_clientArea->RecalculateDisplay();
4603
4604     int row = m_clientArea->GetRowByItem(item);
4605     if( row >= 0 )
4606     {
4607         if( column == NULL )
4608             EnsureVisible(row, -1);
4609         else
4610             EnsureVisible( row, GetColumnIndex(column) );
4611     }
4612
4613 }
4614
4615 void wxDataViewCtrl::HitTest( const wxPoint & point, wxDataViewItem & item,
4616                               wxDataViewColumn* &column ) const
4617 {
4618     m_clientArea->HitTest(point, item, column);
4619 }
4620
4621 wxRect wxDataViewCtrl::GetItemRect( const wxDataViewItem & item,
4622                                     const wxDataViewColumn* column ) const
4623 {
4624     return m_clientArea->GetItemRect(item, column);
4625 }
4626
4627 wxDataViewItem wxDataViewCtrl::GetItemByRow( unsigned int row ) const
4628 {
4629     return m_clientArea->GetItemByRow( row );
4630 }
4631
4632 int wxDataViewCtrl::GetRowByItem( const wxDataViewItem & item ) const
4633 {
4634     return m_clientArea->GetRowByItem( item );
4635 }
4636
4637 void wxDataViewCtrl::Expand( const wxDataViewItem & item )
4638 {
4639     ExpandAncestors( item );
4640
4641     int row = m_clientArea->GetRowByItem( item );
4642     if (row != -1)
4643         m_clientArea->Expand(row);
4644 }
4645
4646 void wxDataViewCtrl::Collapse( const wxDataViewItem & item )
4647 {
4648     int row = m_clientArea->GetRowByItem( item );
4649     if (row != -1)
4650         m_clientArea->Collapse(row);
4651 }
4652
4653 bool wxDataViewCtrl::IsExpanded( const wxDataViewItem & item ) const
4654 {
4655     int row = m_clientArea->GetRowByItem( item );
4656     if (row != -1)
4657         return m_clientArea->IsExpanded(row);
4658     return false;
4659 }
4660
4661 void wxDataViewCtrl::StartEditor( const wxDataViewItem & item, unsigned int column )
4662 {
4663     wxDataViewColumn* col = GetColumn( column );
4664     if (!col)
4665         return;
4666
4667     wxRect itemRect = GetItemRect(item, col);
4668     wxDataViewRenderer* renderer = col->GetRenderer();
4669     if (renderer->GetMode() == wxDATAVIEW_CELL_EDITABLE)
4670         renderer->StartEditing(item, itemRect);
4671 }
4672
4673 #endif // !wxUSE_GENERICDATAVIEWCTRL
4674
4675 #endif // wxUSE_DATAVIEWCTRL