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