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