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 // helper functions
  88 // ----------------------------------------------------------------------------
  89
  90 namespace
  91 {
  92
  93 // Return the expander column or, if it is not set, the first column and also
  94 // set it as the expander one for the future.
  95 wxDataViewColumn* GetExpanderColumnOrFirstOne(wxDataViewCtrl* dataview)
  96 {
  97     wxDataViewColumn* expander = dataview->GetExpanderColumn();
  98     if (!expander)
  99     {
 100         // TODO-RTL: last column for RTL support
 101         expander = dataview->GetColumnAt( 0 );
 102         dataview->SetExpanderColumn(expander);
 103     }
 104
 105     return expander;
 106 }
 107
 108 } // anonymous namespace
 109
 110 //-----------------------------------------------------------------------------
 111 // wxDataViewColumn
 112 //-----------------------------------------------------------------------------
 113
 114 void wxDataViewColumn::Init(int width, wxAlignment align, int flags)
 115 {
 116     m_width = width;
 117     m_minWidth = 0;
 118     m_align = align;
 119     m_flags = flags;
 120     m_sort = false;
 121     m_sortAscending = true;
 122 }
 123
 124 int wxDataViewColumn::GetWidth() const
 125 {
 126     switch ( m_width )
 127     {
 128         case wxCOL_WIDTH_DEFAULT:
 129             return wxDVC_DEFAULT_WIDTH;
 130
 131         case wxCOL_WIDTH_AUTOSIZE:
 132             wxCHECK_MSG( m_owner, wxDVC_DEFAULT_WIDTH, "no owner control" );
 133             return m_owner->GetBestColumnWidth(m_owner->GetColumnIndex(this));
 134
 135         default:
 136             return m_width;
 137     }
 138 }
 139
 140 void wxDataViewColumn::UpdateDisplay()
 141 {
 142     if (m_owner)
 143     {
 144         int idx = m_owner->GetColumnIndex( this );
 145         m_owner->OnColumnChange( idx );
 146     }
 147 }
 148
 149 void wxDataViewColumn::SetSortOrder(bool ascending)
 150 {
 151     if ( !m_owner )
 152         return;
 153
 154     // First unset the old sort column if any.
 155     int oldSortKey = m_owner->GetSortingColumnIndex();
 156     if ( oldSortKey != wxNOT_FOUND )
 157     {
 158         m_owner->GetColumn(oldSortKey)->UnsetAsSortKey();
 159     }
 160
 161     // Now set this one as the new sort column.
 162     const int idx = m_owner->GetColumnIndex(this);
 163     m_owner->SetSortingColumnIndex(idx);
 164
 165     m_sort = true;
 166     m_sortAscending = ascending;
 167
 168     // Call this directly instead of using UpdateDisplay() as we already have
 169     // the column index, no need to look it up again.
 170     m_owner->OnColumnChange(idx);
 171 }
 172
 173 //-----------------------------------------------------------------------------
 174 // wxDataViewHeaderWindow
 175 //-----------------------------------------------------------------------------
 176
 177 class wxDataViewHeaderWindow : public wxHeaderCtrl
 178 {
 179 public:
 180     wxDataViewHeaderWindow(wxDataViewCtrl *parent)
 181         : wxHeaderCtrl(parent)
 182     {
 183     }
 184
 185     wxDataViewCtrl *GetOwner() const
 186         { return static_cast<wxDataViewCtrl *>(GetParent()); }
 187
 188 protected:
 189     // implement/override wxHeaderCtrl functions by forwarding them to the main
 190     // control
 191     virtual const wxHeaderColumn& GetColumn(unsigned int idx) const
 192     {
 193         return *(GetOwner()->GetColumn(idx));
 194     }
 195
 196     virtual bool UpdateColumnWidthToFit(unsigned int idx, int widthTitle)
 197     {
 198         wxDataViewCtrl * const owner = GetOwner();
 199
 200         int widthContents = owner->GetBestColumnWidth(idx);
 201         owner->GetColumn(idx)->SetWidth(wxMax(widthTitle, widthContents));
 202         owner->OnColumnChange(idx);
 203
 204         return true;
 205     }
 206
 207 private:
 208     bool SendEvent(wxEventType type, unsigned int n)
 209     {
 210         wxDataViewCtrl * const owner = GetOwner();
 211         wxDataViewEvent event(type, owner->GetId());
 212
 213         event.SetEventObject(owner);
 214         event.SetColumn(n);
 215         event.SetDataViewColumn(owner->GetColumn(n));
 216         event.SetModel(owner->GetModel());
 217
 218         // for events created by wxDataViewHeaderWindow the
 219         // row / value fields are not valid
 220         return owner->ProcessWindowEvent(event);
 221     }
 222
 223     void OnClick(wxHeaderCtrlEvent& event)
 224     {
 225         const unsigned idx = event.GetColumn();
 226
 227         if ( SendEvent(wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_CLICK, idx) )
 228             return;
 229
 230         // default handling for the column click is to sort by this column or
 231         // toggle its sort order
 232         wxDataViewCtrl * const owner = GetOwner();
 233         wxDataViewColumn * const col = owner->GetColumn(idx);
 234         if ( !col->IsSortable() )
 235         {
 236             // no default handling for non-sortable columns
 237             event.Skip();
 238             return;
 239         }
 240
 241         if ( col->IsSortKey() )
 242         {
 243             // already using this column for sorting, just change the order
 244             col->ToggleSortOrder();
 245         }
 246         else // not using this column for sorting yet
 247         {
 248             col->SetSortOrder(true);
 249         }
 250
 251         wxDataViewModel * const model = owner->GetModel();
 252         if ( model )
 253             model->Resort();
 254
 255         owner->OnColumnChange(idx);
 256
 257         SendEvent(wxEVT_COMMAND_DATAVIEW_COLUMN_SORTED, idx);
 258     }
 259
 260     void OnRClick(wxHeaderCtrlEvent& event)
 261     {
 262         if ( !SendEvent(wxEVT_COMMAND_DATAVIEW_COLUMN_HEADER_RIGHT_CLICK,
 263                         event.GetColumn()) )
 264             event.Skip();
 265     }
 266
 267     void OnResize(wxHeaderCtrlEvent& event)
 268     {
 269         wxDataViewCtrl * const owner = GetOwner();
 270
 271         const unsigned col = event.GetColumn();
 272         owner->GetColumn(col)->SetWidth(event.GetWidth());
 273         GetOwner()->OnColumnChange(col);
 274     }
 275
 276     void OnEndReorder(wxHeaderCtrlEvent& event)
 277     {
 278         wxDataViewCtrl * const owner = GetOwner();
 279         owner->ColumnMoved(owner->GetColumn(event.GetColumn()),
 280                         event.GetNewOrder());
 281     }
 282
 283     DECLARE_EVENT_TABLE()
 284     wxDECLARE_NO_COPY_CLASS(wxDataViewHeaderWindow);
 285 };
 286
 287 BEGIN_EVENT_TABLE(wxDataViewHeaderWindow, wxHeaderCtrl)
 288     EVT_HEADER_CLICK(wxID_ANY, wxDataViewHeaderWindow::OnClick)
 289     EVT_HEADER_RIGHT_CLICK(wxID_ANY, wxDataViewHeaderWindow::OnRClick)
 290
 291     EVT_HEADER_RESIZING(wxID_ANY, wxDataViewHeaderWindow::OnResize)
 292     EVT_HEADER_END_RESIZE(wxID_ANY, wxDataViewHeaderWindow::OnResize)
 293
 294     EVT_HEADER_END_REORDER(wxID_ANY, wxDataViewHeaderWindow::OnEndReorder)
 295 END_EVENT_TABLE()
 296
 297 //-----------------------------------------------------------------------------
 298 // wxDataViewRenameTimer
 299 //-----------------------------------------------------------------------------
 300
 301 class wxDataViewRenameTimer: public wxTimer
 302 {
 303 private:
 304     wxDataViewMainWindow *m_owner;
 305
 306 public:
 307     wxDataViewRenameTimer( wxDataViewMainWindow *owner );
 308     void Notify();
 309 };
 310
 311 //-----------------------------------------------------------------------------
 312 // wxDataViewTreeNode
 313 //-----------------------------------------------------------------------------
 314
 315 class wxDataViewTreeNode;
 316 WX_DEFINE_ARRAY( wxDataViewTreeNode *, wxDataViewTreeNodes );
 317
 318 int LINKAGEMODE wxGenericTreeModelNodeCmp( wxDataViewTreeNode ** node1,
 319                                            wxDataViewTreeNode ** node2);
 320
 321 class wxDataViewTreeNode
 322 {
 323 public:
 324     wxDataViewTreeNode(wxDataViewTreeNode *parent, const wxDataViewItem& item)
 325         : m_parent(parent),
 326           m_item(item),
 327           m_branchData(NULL)
 328     {
 329     }
 330
 331     ~wxDataViewTreeNode()
 332     {
 333         if ( m_branchData )
 334         {
 335             wxDataViewTreeNodes& nodes = m_branchData->children;
 336             for ( wxDataViewTreeNodes::iterator i = nodes.begin();
 337                   i != nodes.end();
 338                   ++i )
 339             {
 340                 delete *i;
 341             }
 342
 343             delete m_branchData;
 344         }
 345     }
 346
 347     static wxDataViewTreeNode* CreateRootNode()
 348     {
 349         wxDataViewTreeNode *n = new wxDataViewTreeNode(NULL, wxDataViewItem());
 350         n->SetHasChildren(true);
 351         n->m_branchData->open = true;
 352         return n;
 353     }
 354
 355     wxDataViewTreeNode * GetParent() const { return m_parent; }
 356
 357     const wxDataViewTreeNodes& GetChildNodes() const
 358     {
 359         wxASSERT( m_branchData != NULL );
 360         return m_branchData->children;
 361     }
 362
 363     void InsertChild(wxDataViewTreeNode *node, unsigned index)
 364     {
 365         if ( !m_branchData )
 366             m_branchData = new BranchNodeData;
 367
 368         m_branchData->children.Insert(node, index);
 369
 370         // TODO: insert into sorted array directly in O(log n) instead of resorting in O(n log n)
 371         if (g_column >= -1)
 372             m_branchData->children.Sort( &wxGenericTreeModelNodeCmp );
 373     }
 374
 375     void RemoveChild(wxDataViewTreeNode *node)
 376     {
 377         wxCHECK_RET( m_branchData != NULL, "leaf node doesn't have children" );
 378         m_branchData->children.Remove(node);
 379     }
 380
 381     const wxDataViewItem & GetItem() const { return m_item; }
 382     void SetItem( const wxDataViewItem & item ) { m_item = item; }
 383
 384     int GetIndentLevel() const
 385     {
 386         int ret = 0;
 387         const wxDataViewTreeNode * node = this;
 388         while( node->GetParent()->GetParent() != NULL )
 389         {
 390             node = node->GetParent();
 391             ret ++;
 392         }
 393         return ret;
 394     }
 395
 396     bool IsOpen() const
 397     {
 398         return m_branchData && m_branchData->open;
 399     }
 400
 401     void ToggleOpen()
 402     {
 403         wxCHECK_RET( m_branchData != NULL, "can't open leaf node" );
 404
 405         int sum = 0;
 406
 407         const wxDataViewTreeNodes& nodes = m_branchData->children;
 408         const int len = nodes.GetCount();
 409         for ( int i = 0;i < len; i ++)
 410             sum += 1 + nodes[i]->GetSubTreeCount();
 411
 412         if (m_branchData->open)
 413         {
 414             ChangeSubTreeCount(-sum);
 415             m_branchData->open = !m_branchData->open;
 416         }
 417         else
 418         {
 419             m_branchData->open = !m_branchData->open;
 420             ChangeSubTreeCount(+sum);
 421         }
 422     }
 423
 424     // "HasChildren" property corresponds to model's IsContainer(). Note that it may be true
 425     // even if GetChildNodes() is empty; see below.
 426     bool HasChildren() const
 427     {
 428         return m_branchData != NULL;
 429     }
 430
 431     void SetHasChildren(bool has)
 432     {
 433         if ( !has )
 434         {
 435             wxDELETE(m_branchData);
 436         }
 437         else if ( m_branchData == NULL )
 438         {
 439             m_branchData = new BranchNodeData;
 440         }
 441     }
 442
 443     int GetSubTreeCount() const
 444     {
 445         return m_branchData ? m_branchData->subTreeCount : 0;
 446     }
 447
 448     void ChangeSubTreeCount( int num )
 449     {
 450         wxASSERT( m_branchData != NULL );
 451
 452         if( !m_branchData->open )
 453             return;
 454
 455         m_branchData->subTreeCount += num;
 456         wxASSERT( m_branchData->subTreeCount >= 0 );
 457
 458         if( m_parent )
 459             m_parent->ChangeSubTreeCount(num);
 460     }
 461
 462     void Resort()
 463     {
 464         if ( !m_branchData )
 465             return;
 466
 467         if (g_column >= -1)
 468         {
 469             wxDataViewTreeNodes& nodes = m_branchData->children;
 470
 471             nodes.Sort( &wxGenericTreeModelNodeCmp );
 472             int len = nodes.GetCount();
 473             for (int i = 0; i < len; i ++)
 474             {
 475                 if ( nodes[i]->HasChildren() )
 476                     nodes[i]->Resort();
 477             }
 478         }
 479     }
 480
 481
 482 private:
 483     wxDataViewTreeNode  *m_parent;
 484
 485     // Corresponding model item.
 486     wxDataViewItem       m_item;
 487
 488     // Data specific to non-leaf (branch, inner) nodes. They are kept in a
 489     // separate struct in order to conserve memory.
 490     struct BranchNodeData
 491     {
 492         BranchNodeData()
 493             : open(false),
 494               subTreeCount(0)
 495         {
 496         }
 497
 498         // Child nodes. Note that this may be empty even if m_hasChildren in
 499         // case this branch of the tree wasn't expanded and realized yet.
 500         wxDataViewTreeNodes  children;
 501
 502         // Is the branch node currently open (expanded)?
 503         bool                 open;
 504
 505         // Total count of expanded (i.e. visible with the help of some
 506         // scrolling) items in the subtree, but excluding this node. I.e. it is
 507         // 0 for leaves and is the number of rows the subtree occupies for
 508         // branch nodes.
 509         int                  subTreeCount;
 510     };
 511
 512     BranchNodeData *m_branchData;
 513 };
 514
 515
 516 int LINKAGEMODE wxGenericTreeModelNodeCmp( wxDataViewTreeNode ** node1,
 517                                            wxDataViewTreeNode ** node2)
 518 {
 519     return g_model->Compare( (*node1)->GetItem(), (*node2)->GetItem(), g_column, g_asending );
 520 }
 521
 522
 523 //-----------------------------------------------------------------------------
 524 // wxDataViewMainWindow
 525 //-----------------------------------------------------------------------------
 526
 527 WX_DEFINE_SORTED_ARRAY_SIZE_T(unsigned int, wxDataViewSelection);
 528
 529 class wxDataViewMainWindow: public wxWindow
 530 {
 531 public:
 532     wxDataViewMainWindow( wxDataViewCtrl *parent,
 533                             wxWindowID id,
 534                             const wxPoint &pos = wxDefaultPosition,
 535                             const wxSize &size = wxDefaultSize,
 536                             const wxString &name = wxT("wxdataviewctrlmainwindow") );
 537     virtual ~wxDataViewMainWindow();
 538
 539     bool IsList() const { return GetModel()->IsListModel(); }
 540     bool IsVirtualList() const { return m_root == NULL; }
 541
 542     // notifications from wxDataViewModel
 543     bool ItemAdded( const wxDataViewItem &parent, const wxDataViewItem &item );
 544     bool ItemDeleted( const wxDataViewItem &parent, const wxDataViewItem &item );
 545     bool ItemChanged( const wxDataViewItem &item );
 546     bool ValueChanged( const wxDataViewItem &item, unsigned int model_column );
 547     bool Cleared();
 548     void Resort()
 549     {
 550         if (!IsVirtualList())
 551         {
 552             SortPrepare();
 553             m_root->Resort();
 554         }
 555         UpdateDisplay();
 556     }
 557
 558     void SortPrepare()
 559     {
 560         g_model = GetModel();
 561         wxDataViewColumn* col = GetOwner()->GetSortingColumn();
 562         if( !col )
 563         {
 564             if (g_model->HasDefaultCompare())
 565                 g_column = -1;
 566             else
 567                 g_column = -2;
 568
 569             g_asending = true;
 570             return;
 571         }
 572         g_column = col->GetModelColumn();
 573         g_asending = col->IsSortOrderAscending();
 574     }
 575
 576     void SetOwner( wxDataViewCtrl* owner ) { m_owner = owner; }
 577     wxDataViewCtrl *GetOwner() { return m_owner; }
 578     const wxDataViewCtrl *GetOwner() const { return m_owner; }
 579
 580     wxDataViewModel* GetModel() { return GetOwner()->GetModel(); }
 581     const wxDataViewModel* GetModel() const { return GetOwner()->GetModel(); }
 582
 583 #if wxUSE_DRAG_AND_DROP
 584     wxBitmap CreateItemBitmap( unsigned int row, int &indent );
 585 #endif // wxUSE_DRAG_AND_DROP
 586     void OnPaint( wxPaintEvent &event );
 587     void OnChar( wxKeyEvent &event );
 588     void OnVerticalNavigation(unsigned int newCurrent, const wxKeyEvent& event);
 589     void OnLeftKey();
 590     void OnRightKey();
 591     void OnMouse( wxMouseEvent &event );
 592     void OnSetFocus( wxFocusEvent &event );
 593     void OnKillFocus( wxFocusEvent &event );
 594
 595     void UpdateDisplay();
 596     void RecalculateDisplay();
 597     void OnInternalIdle();
 598
 599     void OnRenameTimer();
 600
 601     void ScrollWindow( int dx, int dy, const wxRect *rect = NULL );
 602     void ScrollTo( int rows, int column );
 603
 604     unsigned GetCurrentRow() const { return m_currentRow; }
 605     bool HasCurrentRow() { return m_currentRow != (unsigned int)-1; }
 606     void ChangeCurrentRow( unsigned int row );
 607
 608     bool IsSingleSel() const { return !GetParent()->HasFlag(wxDV_MULTIPLE); }
 609     bool IsEmpty() { return GetRowCount() == 0; }
 610
 611     int GetCountPerPage() const;
 612     int GetEndOfLastCol() const;
 613     unsigned int GetFirstVisibleRow() const;
 614
 615     // I change this method to un const because in the tree view,
 616     // the displaying number of the tree are changing along with the
 617     // expanding/collapsing of the tree nodes
 618     unsigned int GetLastVisibleRow();
 619     unsigned int GetRowCount();
 620
 621     const wxDataViewSelection& GetSelections() const { return m_selection; }
 622     void SetSelections( const wxDataViewSelection & sel )
 623         { m_selection = sel; UpdateDisplay(); }
 624     void Select( const wxArrayInt& aSelections );
 625     void SelectAllRows( bool on );
 626     void SelectRow( unsigned int row, bool on );
 627     void SelectRows( unsigned int from, unsigned int to, bool on );
 628     void ReverseRowSelection( unsigned int row );
 629     bool IsRowSelected( unsigned int row );
 630     void SendSelectionChangedEvent( const wxDataViewItem& item);
 631
 632     void RefreshRow( unsigned int row );
 633     void RefreshRows( unsigned int from, unsigned int to );
 634     void RefreshRowsAfter( unsigned int firstRow );
 635
 636     // returns the colour to be used for drawing the rules
 637     wxColour GetRuleColour() const
 638     {
 639         return wxSystemSettings::GetColour(wxSYS_COLOUR_3DLIGHT);
 640     }
 641
 642     wxRect GetLineRect( unsigned int row ) const;
 643
 644     int GetLineStart( unsigned int row ) const;  // row * m_lineHeight in fixed mode
 645     int GetLineHeight( unsigned int row ) const; // m_lineHeight in fixed mode
 646     int GetLineAt( unsigned int y ) const;       // y / m_lineHeight in fixed mode
 647
 648     void SetRowHeight( int lineHeight ) { m_lineHeight = lineHeight; }
 649
 650     // Some useful functions for row and item mapping
 651     wxDataViewItem GetItemByRow( unsigned int row ) const;
 652     int GetRowByItem( const wxDataViewItem & item ) const;
 653
 654     // Methods for building the mapping tree
 655     void BuildTree( wxDataViewModel  * model );
 656     void DestroyTree();
 657     void HitTest( const wxPoint & point, wxDataViewItem & item, wxDataViewColumn* &column );
 658     wxRect GetItemRect( const wxDataViewItem & item, const wxDataViewColumn* column );
 659
 660     void Expand( unsigned int row );
 661     void Collapse( unsigned int row );
 662     bool IsExpanded( unsigned int row ) const;
 663     bool HasChildren( unsigned int row ) const;
 664
 665 #if wxUSE_DRAG_AND_DROP
 666     bool EnableDragSource( const wxDataFormat &format );
 667     bool EnableDropTarget( const wxDataFormat &format );
 668
 669     void RemoveDropHint();
 670     wxDragResult OnDragOver( wxDataFormat format, wxCoord x, wxCoord y, wxDragResult def );
 671     bool OnDrop( wxDataFormat format, wxCoord x, wxCoord y );
 672     wxDragResult OnData( wxDataFormat format, wxCoord x, wxCoord y, wxDragResult def );
 673     void OnLeave();
 674 #endif // wxUSE_DRAG_AND_DROP
 675
 676 private:
 677     wxDataViewTreeNode * GetTreeNodeByRow( unsigned int row ) const;
 678     // We did not need this temporarily
 679     // wxDataViewTreeNode * GetTreeNodeByItem( const wxDataViewItem & item );
 680
 681     int RecalculateCount();
 682
 683     // Return false only if the event was vetoed by its handler.
 684     bool SendExpanderEvent(wxEventType type, const wxDataViewItem& item);
 685
 686     wxDataViewTreeNode * FindNode( const wxDataViewItem & item );
 687
 688 private:
 689     wxDataViewCtrl             *m_owner;
 690     int                         m_lineHeight;
 691     bool                        m_dirty;
 692
 693     wxDataViewColumn           *m_currentCol;
 694     unsigned int                m_currentRow;
 695     wxDataViewSelection         m_selection;
 696
 697     wxDataViewRenameTimer      *m_renameTimer;
 698     bool                        m_lastOnSame;
 699
 700     bool                        m_hasFocus;
 701
 702 #if wxUSE_DRAG_AND_DROP
 703     int                         m_dragCount;
 704     wxPoint                     m_dragStart;
 705
 706     bool                        m_dragEnabled;
 707     wxDataFormat                m_dragFormat;
 708
 709     bool                        m_dropEnabled;
 710     wxDataFormat                m_dropFormat;
 711     bool                        m_dropHint;
 712     unsigned int                m_dropHintLine;
 713 #endif // wxUSE_DRAG_AND_DROP
 714
 715     // for double click logic
 716     unsigned int m_lineLastClicked,
 717         m_lineBeforeLastClicked,
 718         m_lineSelectSingleOnUp;
 719
 720     // the pen used to draw horiz/vertical rules
 721     wxPen m_penRule;
 722
 723     // the pen used to draw the expander and the lines
 724     wxPen m_penExpander;
 725
 726     // This is the tree structure of the model
 727     wxDataViewTreeNode * m_root;
 728     int m_count;
 729
 730     // This is the tree node under the cursor
 731     wxDataViewTreeNode * m_underMouse;
 732
 733 private:
 734     DECLARE_DYNAMIC_CLASS(wxDataViewMainWindow)
 735     DECLARE_EVENT_TABLE()
 736 };
 737
 738 // ---------------------------------------------------------
 739 // wxGenericDataViewModelNotifier
 740 // ---------------------------------------------------------
 741
 742 class wxGenericDataViewModelNotifier: public wxDataViewModelNotifier
 743 {
 744 public:
 745     wxGenericDataViewModelNotifier( wxDataViewMainWindow *mainWindow )
 746         { m_mainWindow = mainWindow; }
 747
 748     virtual bool ItemAdded( const wxDataViewItem & parent, const wxDataViewItem & item )
 749         { return m_mainWindow->ItemAdded( parent , item ); }
 750     virtual bool ItemDeleted( const wxDataViewItem &parent, const wxDataViewItem &item )
 751         { return m_mainWindow->ItemDeleted( parent, item ); }
 752     virtual bool ItemChanged( const wxDataViewItem & item )
 753         { return m_mainWindow->ItemChanged(item);  }
 754     virtual bool ValueChanged( const wxDataViewItem & item , unsigned int col )
 755         { return m_mainWindow->ValueChanged( item, col ); }
 756     virtual bool Cleared()
 757         { return m_mainWindow->Cleared(); }
 758     virtual void Resort()
 759         { m_mainWindow->Resort(); }
 760
 761     wxDataViewMainWindow    *m_mainWindow;
 762 };
 763
 764 // ---------------------------------------------------------
 765 // wxDataViewRenderer
 766 // ---------------------------------------------------------
 767
 768 IMPLEMENT_ABSTRACT_CLASS(wxDataViewRenderer, wxDataViewRendererBase)
 769
 770 wxDataViewRenderer::wxDataViewRenderer( const wxString &varianttype,
 771                                         wxDataViewCellMode mode,
 772                                         int align) :
 773     wxDataViewCustomRendererBase( varianttype, mode, align )
 774 {
 775     m_align = align;
 776     m_mode = mode;
 777     m_ellipsizeMode = wxELLIPSIZE_MIDDLE;
 778     m_dc = NULL;
 779 }
 780
 781 wxDataViewRenderer::~wxDataViewRenderer()
 782 {
 783     delete m_dc;
 784 }
 785
 786 wxDC *wxDataViewRenderer::GetDC()
 787 {
 788     if (m_dc == NULL)
 789     {
 790         if (GetOwner() == NULL)
 791             return NULL;
 792         if (GetOwner()->GetOwner() == NULL)
 793             return NULL;
 794         m_dc = new wxClientDC( GetOwner()->GetOwner() );
 795     }
 796
 797     return m_dc;
 798 }
 799
 800 void wxDataViewRenderer::SetAlignment( int align )
 801 {
 802     m_align=align;
 803 }
 804
 805 int wxDataViewRenderer::GetAlignment() const
 806 {
 807     return m_align;
 808 }
 809
 810 // ---------------------------------------------------------
 811 // wxDataViewCustomRenderer
 812 // ---------------------------------------------------------
 813
 814 IMPLEMENT_ABSTRACT_CLASS(wxDataViewCustomRenderer, wxDataViewRenderer)
 815
 816 wxDataViewCustomRenderer::wxDataViewCustomRenderer( const wxString &varianttype,
 817                         wxDataViewCellMode mode, int align ) :
 818     wxDataViewRenderer( varianttype, mode, align )
 819 {
 820 }
 821
 822 // ---------------------------------------------------------
 823 // wxDataViewTextRenderer
 824 // ---------------------------------------------------------
 825
 826 IMPLEMENT_CLASS(wxDataViewTextRenderer, wxDataViewRenderer)
 827
 828 wxDataViewTextRenderer::wxDataViewTextRenderer( const wxString &varianttype,
 829                                                 wxDataViewCellMode mode, int align ) :
 830     wxDataViewRenderer( varianttype, mode, align )
 831 {
 832 }
 833
 834 bool wxDataViewTextRenderer::SetValue( const wxVariant &value )
 835 {
 836     m_text = value.GetString();
 837
 838     return true;
 839 }
 840
 841 bool wxDataViewTextRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 842 {
 843     return false;
 844 }
 845
 846 bool wxDataViewTextRenderer::HasEditorCtrl() const
 847 {
 848     return true;
 849 }
 850
 851 wxWindow* wxDataViewTextRenderer::CreateEditorCtrl( wxWindow *parent,
 852         wxRect labelRect, const wxVariant &value )
 853 {
 854     wxTextCtrl* ctrl = new wxTextCtrl( parent, wxID_ANY, value,
 855                                        wxPoint(labelRect.x,labelRect.y),
 856                                        wxSize(labelRect.width,labelRect.height),
 857                                        wxTE_PROCESS_ENTER );
 858
 859     // select the text in the control an place the cursor at the end
 860     ctrl->SetInsertionPointEnd();
 861     ctrl->SelectAll();
 862
 863     return ctrl;
 864 }
 865
 866 bool wxDataViewTextRenderer::GetValueFromEditorCtrl( wxWindow *editor, wxVariant &value )
 867 {
 868     wxTextCtrl *text = (wxTextCtrl*) editor;
 869     value = text->GetValue();
 870     return true;
 871 }
 872
 873 bool wxDataViewTextRenderer::Render(wxRect rect, wxDC *dc, int state)
 874 {
 875     RenderText(m_text, 0, rect, dc, state);
 876     return true;
 877 }
 878
 879 wxSize wxDataViewTextRenderer::GetSize() const
 880 {
 881     if (!m_text.empty())
 882         return GetTextExtent(m_text);
 883     else
 884         return wxSize(wxDVC_DEFAULT_RENDERER_SIZE,wxDVC_DEFAULT_RENDERER_SIZE);
 885 }
 886
 887 // ---------------------------------------------------------
 888 // wxDataViewBitmapRenderer
 889 // ---------------------------------------------------------
 890
 891 IMPLEMENT_CLASS(wxDataViewBitmapRenderer, wxDataViewRenderer)
 892
 893 wxDataViewBitmapRenderer::wxDataViewBitmapRenderer( const wxString &varianttype,
 894                                                     wxDataViewCellMode mode, int align ) :
 895     wxDataViewRenderer( varianttype, mode, align )
 896 {
 897 }
 898
 899 bool wxDataViewBitmapRenderer::SetValue( const wxVariant &value )
 900 {
 901     if (value.GetType() == wxT("wxBitmap"))
 902         m_bitmap << value;
 903     if (value.GetType() == wxT("wxIcon"))
 904         m_icon << value;
 905
 906     return true;
 907 }
 908
 909 bool wxDataViewBitmapRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
 910 {
 911     return false;
 912 }
 913
 914 bool wxDataViewBitmapRenderer::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
 915 {
 916     if (m_bitmap.IsOk())
 917         dc->DrawBitmap( m_bitmap, cell.x, cell.y );
 918     else if (m_icon.IsOk())
 919         dc->DrawIcon( m_icon, cell.x, cell.y );
 920
 921     return true;
 922 }
 923
 924 wxSize wxDataViewBitmapRenderer::GetSize() const
 925 {
 926     if (m_bitmap.IsOk())
 927         return wxSize( m_bitmap.GetWidth(), m_bitmap.GetHeight() );
 928     else if (m_icon.IsOk())
 929         return wxSize( m_icon.GetWidth(), m_icon.GetHeight() );
 930
 931     return wxSize(wxDVC_DEFAULT_RENDERER_SIZE,wxDVC_DEFAULT_RENDERER_SIZE);
 932 }
 933
 934 // ---------------------------------------------------------
 935 // wxDataViewToggleRenderer
 936 // ---------------------------------------------------------
 937
 938 IMPLEMENT_ABSTRACT_CLASS(wxDataViewToggleRenderer, wxDataViewRenderer)
 939
 940 wxDataViewToggleRenderer::wxDataViewToggleRenderer( const wxString &varianttype,
 941                         wxDataViewCellMode mode, int align ) :
 942     wxDataViewRenderer( varianttype, mode, align )
 943 {
 944     m_toggle = false;
 945 }
 946
 947 bool wxDataViewToggleRenderer::SetValue( const wxVariant &value )
 948 {
 949     m_toggle = value.GetBool();
 950
 951     return true;
 952 }
 953
 954 bool wxDataViewToggleRenderer::GetValue( wxVariant &WXUNUSED(value) ) const
 955 {
 956     return false;
 957 }
 958
 959 bool wxDataViewToggleRenderer::Render( wxRect cell, wxDC *dc, int WXUNUSED(state) )
 960 {
 961     int flags = 0;
 962     if (m_toggle)
 963         flags |= wxCONTROL_CHECKED;
 964     if (GetMode() != wxDATAVIEW_CELL_ACTIVATABLE ||
 965         GetEnabled() == false)
 966         flags |= wxCONTROL_DISABLED;
 967
 968     // check boxes we draw must always have the same, standard size (if it's
 969     // bigger than the cell size the checkbox will be truncated because the
 970     // caller had set the clipping rectangle to prevent us from drawing outside
 971     // the cell)
 972     cell.SetSize(GetSize());
 973
 974     wxRendererNative::Get().DrawCheckBox(
 975             GetOwner()->GetOwner(),
 976             *dc,
 977             cell,
 978             flags );
 979
 980     return true;
 981 }
 982
 983 bool wxDataViewToggleRenderer::WXOnLeftClick(const wxPoint& cursor,
 984                                              const wxRect& cell,
 985                                              wxDataViewModel *model,
 986                                              const wxDataViewItem& item,
 987                                              unsigned int col)
 988 {
 989     // only react to clicks directly on the checkbox, not elsewhere in the same cell:
 990     if (!wxRect(GetSize()).Contains(cursor))
 991         return false;
 992
 993     return WXOnActivate(cell, model, item, col);
 994 }
 995
 996 bool wxDataViewToggleRenderer::WXOnActivate(const wxRect& WXUNUSED(cell),
 997                                             wxDataViewModel *model,
 998                                             const wxDataViewItem& item,
 999                                             unsigned int col)
1000 {
1001     if (model->IsEnabled(item, col))
1002     {
1003         model->ChangeValue(!m_toggle, item, col);
1004         return true;
1005     }
1006
1007     return false;
1008 }
1009
1010 wxSize wxDataViewToggleRenderer::GetSize() const
1011 {
1012     // the window parameter is not used by GetCheckBoxSize() so it's
1013     // safe to pass NULL
1014     return wxRendererNative::Get().GetCheckBoxSize(NULL);
1015 }
1016
1017 // ---------------------------------------------------------
1018 // wxDataViewProgressRenderer
1019 // ---------------------------------------------------------
1020
1021 IMPLEMENT_ABSTRACT_CLASS(wxDataViewProgressRenderer, wxDataViewRenderer)
1022
1023 wxDataViewProgressRenderer::wxDataViewProgressRenderer( const wxString &label,
1024     const wxString &varianttype, wxDataViewCellMode mode, int align ) :
1025     wxDataViewRenderer( varianttype, mode, align )
1026 {
1027     m_label = label;
1028     m_value = 0;
1029 }
1030
1031 bool wxDataViewProgressRenderer::SetValue( const wxVariant &value )
1032 {
1033     m_value = (long) value;
1034
1035     if (m_value < 0) m_value = 0;
1036     if (m_value > 100) m_value = 100;
1037
1038     return true;
1039 }
1040
1041 bool wxDataViewProgressRenderer::GetValue( wxVariant &value ) const
1042 {
1043     value = (long) m_value;
1044     return true;
1045 }
1046
1047 bool
1048 wxDataViewProgressRenderer::Render(wxRect rect, wxDC *dc, int WXUNUSED(state))
1049 {
1050     // deflate the rect to leave a small border between bars in adjacent rows
1051     wxRect bar = rect.Deflate(0, 1);
1052
1053     dc->SetBrush( *wxTRANSPARENT_BRUSH );
1054     dc->SetPen( *wxBLACK_PEN );
1055     dc->DrawRectangle( bar );
1056
1057     bar.width = (int)(bar.width * m_value / 100.);
1058     dc->SetPen( *wxTRANSPARENT_PEN );
1059
1060     const wxDataViewItemAttr& attr = GetAttr();
1061     dc->SetBrush( attr.HasColour() ? wxBrush(attr.GetColour())
1062                                   : *wxBLUE_BRUSH );
1063     dc->DrawRectangle( bar );
1064
1065     return true;
1066 }
1067
1068 wxSize wxDataViewProgressRenderer::GetSize() const
1069 {
1070     return wxSize(40,12);
1071 }
1072
1073 // ---------------------------------------------------------
1074 // wxDataViewDateRenderer
1075 // ---------------------------------------------------------
1076
1077 #define wxUSE_DATE_RENDERER_POPUP (wxUSE_CALENDARCTRL && wxUSE_POPUPWIN)
1078
1079 #if wxUSE_DATE_RENDERER_POPUP
1080
1081 class wxDataViewDateRendererPopupTransient: public wxPopupTransientWindow
1082 {
1083 public:
1084     wxDataViewDateRendererPopupTransient( wxWindow* parent, wxDateTime *value,
1085         wxDataViewModel *model, const wxDataViewItem & item, unsigned int col) :
1086         wxPopupTransientWindow( parent, wxBORDER_SIMPLE ),
1087         m_item( item )
1088     {
1089         m_model = model;
1090         m_col = col;
1091         m_cal = new wxCalendarCtrl( this, wxID_ANY, *value );
1092         wxBoxSizer *sizer = new wxBoxSizer( wxHORIZONTAL );
1093         sizer->Add( m_cal, 1, wxGROW );
1094         SetSizer( sizer );
1095         sizer->Fit( this );
1096     }
1097
1098     void OnCalendar( wxCalendarEvent &event );
1099
1100     wxCalendarCtrl      *m_cal;
1101     wxDataViewModel *m_model;
1102     unsigned int               m_col;
1103     const wxDataViewItem &   m_item;
1104
1105 protected:
1106     virtual void OnDismiss()
1107     {
1108     }
1109
1110 private:
1111     DECLARE_EVENT_TABLE()
1112 };
1113
1114 BEGIN_EVENT_TABLE(wxDataViewDateRendererPopupTransient,wxPopupTransientWindow)
1115     EVT_CALENDAR( wxID_ANY, wxDataViewDateRendererPopupTransient::OnCalendar )
1116 END_EVENT_TABLE()
1117
1118 void wxDataViewDateRendererPopupTransient::OnCalendar( wxCalendarEvent &event )
1119 {
1120     m_model->ChangeValue( event.GetDate(), m_item, m_col );
1121     DismissAndNotify();
1122 }
1123
1124 #endif // wxUSE_DATE_RENDERER_POPUP
1125
1126 IMPLEMENT_ABSTRACT_CLASS(wxDataViewDateRenderer, wxDataViewRenderer)
1127
1128 wxDataViewDateRenderer::wxDataViewDateRenderer( const wxString &varianttype,
1129                         wxDataViewCellMode mode, int align ) :
1130     wxDataViewRenderer( varianttype, mode, align )
1131 {
1132 }
1133
1134 bool wxDataViewDateRenderer::SetValue( const wxVariant &value )
1135 {
1136     m_date = value.GetDateTime();
1137
1138     return true;
1139 }
1140
1141 bool wxDataViewDateRenderer::GetValue( wxVariant &value ) const
1142 {
1143     value = m_date;
1144     return true;
1145 }
1146
1147 bool wxDataViewDateRenderer::Render( wxRect cell, wxDC *dc, int state )
1148 {
1149     wxString tmp = m_date.FormatDate();
1150     RenderText( tmp, 0, cell, dc, state );
1151     return true;
1152 }
1153
1154 wxSize wxDataViewDateRenderer::GetSize() const
1155 {
1156     return GetTextExtent(m_date.FormatDate());
1157 }
1158
1159 bool wxDataViewDateRenderer::WXOnActivate(const wxRect& WXUNUSED(cell),
1160                                           wxDataViewModel *model,
1161                                           const wxDataViewItem& item,
1162                                           unsigned int col)
1163 {
1164     wxDateTime dtOld = m_date;
1165
1166 #if wxUSE_DATE_RENDERER_POPUP
1167     wxDataViewDateRendererPopupTransient *popup = new wxDataViewDateRendererPopupTransient(
1168         GetOwner()->GetOwner()->GetParent(), &dtOld, model, item, col);
1169     wxPoint pos = wxGetMousePosition();
1170     popup->Move( pos );
1171     popup->Layout();
1172     popup->Popup( popup->m_cal );
1173 #else // !wxUSE_DATE_RENDERER_POPUP
1174     wxMessageBox(dtOld.Format());
1175 #endif // wxUSE_DATE_RENDERER_POPUP/!wxUSE_DATE_RENDERER_POPUP
1176
1177     return true;
1178 }
1179
1180 // ---------------------------------------------------------
1181 // wxDataViewIconTextRenderer
1182 // ---------------------------------------------------------
1183
1184 IMPLEMENT_CLASS(wxDataViewIconTextRenderer, wxDataViewRenderer)
1185
1186 wxDataViewIconTextRenderer::wxDataViewIconTextRenderer(
1187 const wxString &varianttype, wxDataViewCellMode mode, int align ) :
1188     wxDataViewRenderer( varianttype, mode, align )
1189 {
1190     SetMode(mode);
1191     SetAlignment(align);
1192 }
1193
1194 bool wxDataViewIconTextRenderer::SetValue( const wxVariant &value )
1195 {
1196     m_value << value;
1197     return true;
1198 }
1199
1200 bool wxDataViewIconTextRenderer::GetValue( wxVariant& WXUNUSED(value) ) const
1201 {
1202     return false;
1203 }
1204
1205 bool wxDataViewIconTextRenderer::Render(wxRect rect, wxDC *dc, int state)
1206 {
1207     int xoffset = 0;
1208
1209     const wxIcon& icon = m_value.GetIcon();
1210     if ( icon.IsOk() )
1211     {
1212         dc->DrawIcon(icon, rect.x, rect.y + (rect.height - icon.GetHeight())/2);
1213         xoffset = icon.GetWidth()+4;
1214     }
1215
1216     RenderText(m_value.GetText(), xoffset, rect, dc, state);
1217
1218     return true;
1219 }
1220
1221 wxSize wxDataViewIconTextRenderer::GetSize() const
1222 {
1223     if (!m_value.GetText().empty())
1224     {
1225         wxSize size = GetTextExtent(m_value.GetText());
1226
1227         if (m_value.GetIcon().IsOk())
1228             size.x += m_value.GetIcon().GetWidth() + 4;
1229         return size;
1230     }
1231     return wxSize(80,20);
1232 }
1233
1234 wxWindow* wxDataViewIconTextRenderer::CreateEditorCtrl(wxWindow *parent, wxRect labelRect, const wxVariant& value)
1235 {
1236     wxDataViewIconText iconText;
1237     iconText << value;
1238
1239     wxString text = iconText.GetText();
1240
1241     // adjust the label rect to take the width of the icon into account
1242     if (iconText.GetIcon().IsOk())
1243     {
1244         int w = iconText.GetIcon().GetWidth() + 4;
1245         labelRect.x += w;
1246         labelRect.width -= w;
1247     }
1248
1249     wxTextCtrl* ctrl = new wxTextCtrl( parent, wxID_ANY, text,
1250                                        wxPoint(labelRect.x,labelRect.y),
1251                                        wxSize(labelRect.width,labelRect.height),
1252                                        wxTE_PROCESS_ENTER );
1253
1254     // select the text in the control an place the cursor at the end
1255     ctrl->SetInsertionPointEnd();
1256     ctrl->SelectAll();
1257
1258     return ctrl;
1259 }
1260
1261 bool wxDataViewIconTextRenderer::GetValueFromEditorCtrl( wxWindow *editor, wxVariant& value )
1262 {
1263     wxTextCtrl *text = (wxTextCtrl*) editor;
1264
1265     wxDataViewIconText iconText(text->GetValue(), m_value.GetIcon());
1266     value << iconText;
1267     return true;
1268 }
1269
1270 //-----------------------------------------------------------------------------
1271 // wxDataViewDropTarget
1272 //-----------------------------------------------------------------------------
1273
1274 #if wxUSE_DRAG_AND_DROP
1275
1276 class wxBitmapCanvas: public wxWindow
1277 {
1278 public:
1279     wxBitmapCanvas( wxWindow *parent, const wxBitmap &bitmap, const wxSize &size ) :
1280     wxWindow( parent, wxID_ANY, wxPoint(0,0), size )
1281     {
1282         m_bitmap = bitmap;
1283         Connect( wxEVT_PAINT, wxPaintEventHandler(wxBitmapCanvas::OnPaint) );
1284     }
1285
1286     void OnPaint( wxPaintEvent &WXUNUSED(event) )
1287     {
1288         wxPaintDC dc(this);
1289         dc.DrawBitmap( m_bitmap, 0, 0);
1290     }
1291
1292     wxBitmap m_bitmap;
1293 };
1294
1295 class wxDataViewDropSource: public wxDropSource
1296 {
1297 public:
1298     wxDataViewDropSource( wxDataViewMainWindow *win, unsigned int row ) :
1299         wxDropSource( win )
1300     {
1301         m_win = win;
1302         m_row = row;
1303         m_hint = NULL;
1304     }
1305
1306     ~wxDataViewDropSource()
1307     {
1308         delete m_hint;
1309     }
1310
1311     virtual bool GiveFeedback( wxDragResult WXUNUSED(effect) )
1312     {
1313         wxPoint pos = wxGetMousePosition();
1314
1315         if (!m_hint)
1316         {
1317             int liney = m_win->GetLineStart( m_row );
1318             int linex = 0;
1319             m_win->GetOwner()->CalcUnscrolledPosition( 0, liney, NULL, &liney );
1320             m_win->ClientToScreen( &linex, &liney );
1321             m_dist_x = pos.x - linex;
1322             m_dist_y = pos.y - liney;
1323
1324             int indent = 0;
1325             wxBitmap ib = m_win->CreateItemBitmap( m_row, indent );
1326             m_dist_x -= indent;
1327             m_hint = new wxFrame( m_win->GetParent(), wxID_ANY, wxEmptyString,
1328                                         wxPoint(pos.x - m_dist_x, pos.y + 5 ),
1329                                         ib.GetSize(),
1330                                         wxFRAME_TOOL_WINDOW |
1331                                         wxFRAME_FLOAT_ON_PARENT |
1332                                         wxFRAME_NO_TASKBAR |
1333                                         wxNO_BORDER );
1334             new wxBitmapCanvas( m_hint, ib, ib.GetSize() );
1335             m_hint->Show();
1336         }
1337         else
1338         {
1339             m_hint->Move( pos.x - m_dist_x, pos.y + 5  );
1340             m_hint->SetTransparent( 128 );
1341         }
1342
1343         return false;
1344     }
1345
1346     wxDataViewMainWindow   *m_win;
1347     unsigned int            m_row;
1348     wxFrame                *m_hint;
1349     int m_dist_x,m_dist_y;
1350 };
1351
1352
1353 class wxDataViewDropTarget: public wxDropTarget
1354 {
1355 public:
1356     wxDataViewDropTarget( wxDataObject *obj, wxDataViewMainWindow *win ) :
1357         wxDropTarget( obj )
1358     {
1359         m_win = win;
1360     }
1361
1362     virtual wxDragResult OnDragOver( wxCoord x, wxCoord y, wxDragResult def )
1363     {
1364         wxDataFormat format = GetMatchingPair();
1365         if (format == wxDF_INVALID)
1366             return wxDragNone;
1367         return m_win->OnDragOver( format, x, y, def);
1368     }
1369
1370     virtual bool OnDrop( wxCoord x, wxCoord y )
1371     {
1372         wxDataFormat format = GetMatchingPair();
1373         if (format == wxDF_INVALID)
1374             return false;
1375         return m_win->OnDrop( format, x, y );
1376     }
1377
1378     virtual wxDragResult OnData( wxCoord x, wxCoord y, wxDragResult def )
1379     {
1380         wxDataFormat format = GetMatchingPair();
1381         if (format == wxDF_INVALID)
1382             return wxDragNone;
1383         if (!GetData())
1384             return wxDragNone;
1385         return m_win->OnData( format, x, y, def );
1386     }
1387
1388     virtual void OnLeave()
1389         { m_win->OnLeave(); }
1390
1391     wxDataViewMainWindow   *m_win;
1392 };
1393
1394 #endif // wxUSE_DRAG_AND_DROP
1395
1396 //-----------------------------------------------------------------------------
1397 // wxDataViewRenameTimer
1398 //-----------------------------------------------------------------------------
1399
1400 wxDataViewRenameTimer::wxDataViewRenameTimer( wxDataViewMainWindow *owner )
1401 {
1402     m_owner = owner;
1403 }
1404
1405 void wxDataViewRenameTimer::Notify()
1406 {
1407     m_owner->OnRenameTimer();
1408 }
1409
1410 //-----------------------------------------------------------------------------
1411 // wxDataViewMainWindow
1412 //-----------------------------------------------------------------------------
1413
1414 // The tree building helper, declared firstly
1415 static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
1416                              wxDataViewTreeNode * node);
1417
1418 int LINKAGEMODE wxDataViewSelectionCmp( unsigned int row1, unsigned int row2 )
1419 {
1420     if (row1 > row2) return 1;
1421     if (row1 == row2) return 0;
1422     return -1;
1423 }
1424
1425 IMPLEMENT_ABSTRACT_CLASS(wxDataViewMainWindow, wxWindow)
1426
1427 BEGIN_EVENT_TABLE(wxDataViewMainWindow,wxWindow)
1428     EVT_PAINT         (wxDataViewMainWindow::OnPaint)
1429     EVT_MOUSE_EVENTS  (wxDataViewMainWindow::OnMouse)
1430     EVT_SET_FOCUS     (wxDataViewMainWindow::OnSetFocus)
1431     EVT_KILL_FOCUS    (wxDataViewMainWindow::OnKillFocus)
1432     EVT_CHAR          (wxDataViewMainWindow::OnChar)
1433 END_EVENT_TABLE()
1434
1435 wxDataViewMainWindow::wxDataViewMainWindow( wxDataViewCtrl *parent, wxWindowID id,
1436     const wxPoint &pos, const wxSize &size, const wxString &name ) :
1437     wxWindow( parent, id, pos, size, wxWANTS_CHARS|wxBORDER_NONE, name ),
1438     m_selection( wxDataViewSelectionCmp )
1439
1440 {
1441     SetOwner( parent );
1442
1443     m_lastOnSame = false;
1444     m_renameTimer = new wxDataViewRenameTimer( this );
1445
1446     // TODO: user better initial values/nothing selected
1447     m_currentCol = NULL;
1448     m_currentRow = 0;
1449
1450     m_lineHeight = wxMax( 17, GetCharHeight() + 2 ); // 17 = mini icon height + 1
1451
1452 #if wxUSE_DRAG_AND_DROP
1453     m_dragCount = 0;
1454     m_dragStart = wxPoint(0,0);
1455
1456     m_dragEnabled = false;
1457     m_dropEnabled = false;
1458     m_dropHint = false;
1459     m_dropHintLine = (unsigned int) -1;
1460 #endif // wxUSE_DRAG_AND_DROP
1461
1462     m_lineLastClicked = (unsigned int) -1;
1463     m_lineBeforeLastClicked = (unsigned int) -1;
1464     m_lineSelectSingleOnUp = (unsigned int) -1;
1465
1466     m_hasFocus = false;
1467
1468     SetBackgroundColour( *wxWHITE );
1469
1470     SetBackgroundStyle(wxBG_STYLE_CUSTOM);
1471
1472     m_penRule = wxPen(GetRuleColour());
1473
1474     // compose a pen whichcan draw black lines
1475     // TODO: maybe there is something system colour to use
1476     m_penExpander = wxPen(wxColour(0,0,0));
1477
1478     m_root = wxDataViewTreeNode::CreateRootNode();
1479
1480     // Make m_count = -1 will cause the class recaculate the real displaying number of rows.
1481     m_count = -1;
1482     m_underMouse = NULL;
1483     UpdateDisplay();
1484 }
1485
1486 wxDataViewMainWindow::~wxDataViewMainWindow()
1487 {
1488     DestroyTree();
1489     delete m_renameTimer;
1490 }
1491
1492
1493 #if wxUSE_DRAG_AND_DROP
1494 bool wxDataViewMainWindow::EnableDragSource( const wxDataFormat &format )
1495 {
1496     m_dragFormat = format;
1497     m_dragEnabled = format != wxDF_INVALID;
1498
1499     return true;
1500 }
1501
1502 bool wxDataViewMainWindow::EnableDropTarget( const wxDataFormat &format )
1503 {
1504     m_dropFormat = format;
1505     m_dropEnabled = format != wxDF_INVALID;
1506
1507     if (m_dropEnabled)
1508         SetDropTarget( new wxDataViewDropTarget( new wxCustomDataObject( format ), this ) );
1509
1510     return true;
1511 }
1512
1513 void wxDataViewMainWindow::RemoveDropHint()
1514 {
1515     if (m_dropHint)
1516     {
1517             m_dropHint = false;
1518             RefreshRow( m_dropHintLine );
1519             m_dropHintLine = (unsigned int) -1;
1520     }
1521 }
1522
1523 wxDragResult wxDataViewMainWindow::OnDragOver( wxDataFormat format, wxCoord x,
1524                                                wxCoord y, wxDragResult def )
1525 {
1526     int xx = x;
1527     int yy = y;
1528     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1529     unsigned int row = GetLineAt( yy );
1530
1531     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1532     {
1533         RemoveDropHint();
1534         return wxDragNone;
1535     }
1536
1537     wxDataViewItem item = GetItemByRow( row );
1538
1539     wxDataViewModel *model = GetModel();
1540
1541     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, m_owner->GetId() );
1542     event.SetEventObject( m_owner );
1543     event.SetItem( item );
1544     event.SetModel( model );
1545     event.SetDataFormat( format );
1546     if (!m_owner->HandleWindowEvent( event ))
1547     {
1548         RemoveDropHint();
1549         return wxDragNone;
1550     }
1551
1552     if (!event.IsAllowed())
1553     {
1554         RemoveDropHint();
1555         return wxDragNone;
1556     }
1557
1558
1559     if (m_dropHint && (row != m_dropHintLine))
1560         RefreshRow( m_dropHintLine );
1561     m_dropHint = true;
1562     m_dropHintLine = row;
1563     RefreshRow( row );
1564
1565     return def;
1566 }
1567
1568 bool wxDataViewMainWindow::OnDrop( wxDataFormat format, wxCoord x, wxCoord y )
1569 {
1570     RemoveDropHint();
1571
1572     int xx = x;
1573     int yy = y;
1574     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1575     unsigned int row = GetLineAt( yy );
1576
1577     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1578         return false;
1579
1580     wxDataViewItem item = GetItemByRow( row );
1581
1582     wxDataViewModel *model = GetModel();
1583
1584     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP_POSSIBLE, m_owner->GetId() );
1585     event.SetEventObject( m_owner );
1586     event.SetItem( item );
1587     event.SetModel( model );
1588     event.SetDataFormat( format );
1589     if (!m_owner->HandleWindowEvent( event ))
1590         return false;
1591
1592     if (!event.IsAllowed())
1593         return false;
1594
1595     return true;
1596 }
1597
1598 wxDragResult wxDataViewMainWindow::OnData( wxDataFormat format, wxCoord x, wxCoord y,
1599                                            wxDragResult def )
1600 {
1601     int xx = x;
1602     int yy = y;
1603     m_owner->CalcUnscrolledPosition( xx, yy, &xx, &yy );
1604     unsigned int row = GetLineAt( yy );
1605
1606     if ((row >= GetRowCount()) || (xx > GetEndOfLastCol()))
1607         return wxDragNone;
1608
1609     wxDataViewItem item = GetItemByRow( row );
1610
1611     wxDataViewModel *model = GetModel();
1612
1613     wxCustomDataObject *obj = (wxCustomDataObject *) GetDropTarget()->GetDataObject();
1614
1615     wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_DROP, m_owner->GetId() );
1616     event.SetEventObject( m_owner );
1617     event.SetItem( item );
1618     event.SetModel( model );
1619     event.SetDataFormat( format );
1620     event.SetDataSize( obj->GetSize() );
1621     event.SetDataBuffer( obj->GetData() );
1622     if (!m_owner->HandleWindowEvent( event ))
1623         return wxDragNone;
1624
1625     if (!event.IsAllowed())
1626         return wxDragNone;
1627
1628     return def;
1629 }
1630
1631 void wxDataViewMainWindow::OnLeave()
1632 {
1633     RemoveDropHint();
1634 }
1635
1636 wxBitmap wxDataViewMainWindow::CreateItemBitmap( unsigned int row, int &indent )
1637 {
1638     int height = GetLineHeight( row );
1639     int width = 0;
1640     unsigned int cols = GetOwner()->GetColumnCount();
1641     unsigned int col;
1642     for (col = 0; col < cols; col++)
1643     {
1644         wxDataViewColumn *column = GetOwner()->GetColumnAt(col);
1645         if (column->IsHidden())
1646             continue;      // skip it!
1647         width += column->GetWidth();
1648     }
1649
1650     indent = 0;
1651     if (!IsList())
1652     {
1653         wxDataViewTreeNode *node = GetTreeNodeByRow(row);
1654         indent = GetOwner()->GetIndent() * node->GetIndentLevel();
1655         indent = indent + m_lineHeight;
1656             // try to use the m_lineHeight as the expander space
1657     }
1658     width -= indent;
1659
1660     wxBitmap bitmap( width, height );
1661     wxMemoryDC dc( bitmap );
1662     dc.SetFont( GetFont() );
1663     dc.SetPen( *wxBLACK_PEN );
1664     dc.SetBrush( *wxWHITE_BRUSH );
1665     dc.DrawRectangle( 0,0,width,height );
1666
1667     wxDataViewModel *model = m_owner->GetModel();
1668
1669     wxDataViewColumn * const
1670         expander = GetExpanderColumnOrFirstOne(GetOwner());
1671
1672     int x = 0;
1673     for (col = 0; col < cols; col++)
1674     {
1675         wxDataViewColumn *column = GetOwner()->GetColumnAt( col );
1676         wxDataViewRenderer *cell = column->GetRenderer();
1677
1678         if (column->IsHidden())
1679             continue;       // skip it!
1680
1681         width = column->GetWidth();
1682
1683         if (column == expander)
1684             width -= indent;
1685
1686         wxDataViewItem item = GetItemByRow( row );
1687         cell->PrepareForItem(model, item, column->GetModelColumn());
1688
1689         wxRect item_rect(x, 0, width, height);
1690         item_rect.Deflate(PADDING_RIGHTLEFT, 0);
1691
1692         // dc.SetClippingRegion( item_rect );
1693         cell->WXCallRender(item_rect, &dc, 0);
1694         // dc.DestroyClippingRegion();
1695
1696         x += width;
1697     }
1698
1699     return bitmap;
1700 }
1701
1702 #endif // wxUSE_DRAG_AND_DROP
1703
1704
1705 void wxDataViewMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
1706 {
1707     wxDataViewModel *model = GetModel();
1708     wxAutoBufferedPaintDC dc( this );
1709
1710 #ifdef __WXMSW__
1711     dc.SetBrush(GetOwner()->GetBackgroundColour());
1712     dc.SetPen( *wxTRANSPARENT_PEN );
1713     dc.DrawRectangle(GetClientSize());
1714 #endif
1715
1716     if ( IsEmpty() )
1717     {
1718         // No items to draw.
1719         return;
1720     }
1721
1722     // prepare the DC
1723     GetOwner()->PrepareDC( dc );
1724     dc.SetFont( GetFont() );
1725
1726     wxRect update = GetUpdateRegion().GetBox();
1727     m_owner->CalcUnscrolledPosition( update.x, update.y, &update.x, &update.y );
1728
1729     // compute which items needs to be redrawn
1730     unsigned int item_start = GetLineAt( wxMax(0,update.y) );
1731     unsigned int item_count =
1732         wxMin( (int)(  GetLineAt( wxMax(0,update.y+update.height) ) - item_start + 1),
1733             (int)(GetRowCount( ) - item_start));
1734     unsigned int item_last = item_start + item_count;
1735
1736     // Send the event to wxDataViewCtrl itself.
1737     wxWindow * const parent = GetParent();
1738     wxDataViewEvent cache_event(wxEVT_COMMAND_DATAVIEW_CACHE_HINT, parent->GetId());
1739     cache_event.SetEventObject(parent);
1740     cache_event.SetCache(item_start, item_last - 1);
1741     parent->ProcessWindowEvent(cache_event);
1742
1743     // compute which columns needs to be redrawn
1744     unsigned int cols = GetOwner()->GetColumnCount();
1745     if ( !cols )
1746     {
1747         // we assume that we have at least one column below and painting an
1748         // empty control is unnecessary anyhow
1749         return;
1750     }
1751
1752     unsigned int col_start = 0;
1753     unsigned int x_start;
1754     for (x_start = 0; col_start < cols; col_start++)
1755     {
1756         wxDataViewColumn *col = GetOwner()->GetColumnAt(col_start);
1757         if (col->IsHidden())
1758             continue;      // skip it!
1759
1760         unsigned int w = col->GetWidth();
1761         if (x_start+w >= (unsigned int)update.x)
1762             break;
1763
1764         x_start += w;
1765     }
1766
1767     unsigned int col_last = col_start;
1768     unsigned int x_last = x_start;
1769     for (; col_last < cols; col_last++)
1770     {
1771         wxDataViewColumn *col = GetOwner()->GetColumnAt(col_last);
1772         if (col->IsHidden())
1773             continue;      // skip it!
1774
1775         if (x_last > (unsigned int)update.GetRight())
1776             break;
1777
1778         x_last += col->GetWidth();
1779     }
1780
1781     // Draw horizontal rules if required
1782     if ( m_owner->HasFlag(wxDV_HORIZ_RULES) )
1783     {
1784         dc.SetPen(m_penRule);
1785         dc.SetBrush(*wxTRANSPARENT_BRUSH);
1786
1787         for (unsigned int i = item_start; i <= item_last; i++)
1788         {
1789             int y = GetLineStart( i );
1790             dc.DrawLine(x_start, y, x_last, y);
1791         }
1792     }
1793
1794     // Draw vertical rules if required
1795     if ( m_owner->HasFlag(wxDV_VERT_RULES) )
1796     {
1797         dc.SetPen(m_penRule);
1798         dc.SetBrush(*wxTRANSPARENT_BRUSH);
1799
1800         // NB: Vertical rules are drawn in the last pixel of a column so that
1801         //     they align perfectly with native MSW wxHeaderCtrl as well as for
1802         //     consistency with MSW native list control. There's no vertical
1803         //     rule at the most-left side of the control.
1804
1805         int x = x_start - 1;
1806         for (unsigned int i = col_start; i < col_last; i++)
1807         {
1808             wxDataViewColumn *col = GetOwner()->GetColumnAt(i);
1809             if (col->IsHidden())
1810                 continue;       // skip it
1811
1812             x += col->GetWidth();
1813
1814             dc.DrawLine(x, GetLineStart( item_start ),
1815                         x, GetLineStart( item_last ) );
1816         }
1817     }
1818
1819     // redraw the background for the items which are selected/current
1820     for (unsigned int item = item_start; item < item_last; item++)
1821     {
1822         bool selected = m_selection.Index( item ) != wxNOT_FOUND;
1823         if (selected || item == m_currentRow)
1824         {
1825             int flags = selected ? (int)wxCONTROL_SELECTED : 0;
1826             if (item == m_currentRow)
1827                 flags |= wxCONTROL_CURRENT;
1828             if (m_hasFocus)
1829                 flags |= wxCONTROL_FOCUSED;
1830
1831             wxRect rect( x_start, GetLineStart( item ),
1832                          x_last - x_start, GetLineHeight( item ) );
1833             wxRendererNative::Get().DrawItemSelectionRect
1834                                 (
1835                                     this,
1836                                     dc,
1837                                     rect,
1838                                     flags
1839                                 );
1840         }
1841     }
1842
1843 #if wxUSE_DRAG_AND_DROP
1844     if (m_dropHint)
1845     {
1846         wxRect rect( x_start, GetLineStart( m_dropHintLine ),
1847                      x_last - x_start, GetLineHeight( m_dropHintLine ) );
1848         dc.SetPen( *wxBLACK_PEN );
1849         dc.SetBrush( *wxTRANSPARENT_BRUSH );
1850         dc.DrawRectangle( rect );
1851     }
1852 #endif // wxUSE_DRAG_AND_DROP
1853
1854     wxDataViewColumn * const
1855         expander = GetExpanderColumnOrFirstOne(GetOwner());
1856
1857     // redraw all cells for all rows which must be repainted and all columns
1858     wxRect cell_rect;
1859     cell_rect.x = x_start;
1860     for (unsigned int i = col_start; i < col_last; i++)
1861     {
1862         wxDataViewColumn *col = GetOwner()->GetColumnAt( i );
1863         wxDataViewRenderer *cell = col->GetRenderer();
1864         cell_rect.width = col->GetWidth();
1865
1866         if ( col->IsHidden() || cell_rect.width <= 0 )
1867             continue;       // skip it!
1868
1869         for (unsigned int item = item_start; item < item_last; item++)
1870         {
1871             // get the cell value and set it into the renderer
1872             wxDataViewTreeNode *node = NULL;
1873             wxDataViewItem dataitem;
1874
1875             if (!IsVirtualList())
1876             {
1877                 node = GetTreeNodeByRow(item);
1878                 if( node == NULL )
1879                     continue;
1880
1881                 dataitem = node->GetItem();
1882
1883                 // Skip all columns of "container" rows except the expander
1884                 // column itself unless HasContainerColumns() overrides this.
1885                 if ( col != expander &&
1886                         model->IsContainer(dataitem) &&
1887                             !model->HasContainerColumns(dataitem) )
1888                     continue;
1889             }
1890             else
1891             {
1892                 dataitem = wxDataViewItem( wxUIntToPtr(item+1) );
1893             }
1894
1895             cell->PrepareForItem(model, dataitem, col->GetModelColumn());
1896
1897             // update cell_rect
1898             cell_rect.y = GetLineStart( item );
1899             cell_rect.height = GetLineHeight( item );
1900
1901             // deal with the expander
1902             int indent = 0;
1903             if ((!IsList()) && (col == expander))
1904             {
1905                 // Calculate the indent first
1906                 indent = GetOwner()->GetIndent() * node->GetIndentLevel();
1907
1908                 // we reserve m_lineHeight of horizontal space for the expander
1909                 // but leave EXPANDER_MARGIN around the expander itself
1910                 int exp_x = cell_rect.x + indent + EXPANDER_MARGIN;
1911
1912                 indent += m_lineHeight;
1913
1914                 // draw expander if needed and visible
1915                 if ( node->HasChildren() && exp_x < cell_rect.GetRight() )
1916                 {
1917                     dc.SetPen( m_penExpander );
1918                     dc.SetBrush( wxNullBrush );
1919
1920                     int exp_size = m_lineHeight - 2*EXPANDER_MARGIN;
1921                     int exp_y = cell_rect.y + (cell_rect.height - exp_size)/2
1922                                    + EXPANDER_MARGIN - EXPANDER_OFFSET;
1923
1924                     const wxRect rect(exp_x, exp_y, exp_size, exp_size);
1925
1926                     int flag = 0;
1927                     if ( m_underMouse == node )
1928                         flag |= wxCONTROL_CURRENT;
1929                     if ( node->IsOpen() )
1930                         flag |= wxCONTROL_EXPANDED;
1931
1932                     // ensure that we don't overflow the cell (which might
1933                     // happen if the column is very narrow)
1934                     wxDCClipper clip(dc, cell_rect);
1935
1936                     wxRendererNative::Get().DrawTreeItemButton( this, dc, rect, flag);
1937                 }
1938
1939                 // force the expander column to left-center align
1940                 cell->SetAlignment( wxALIGN_CENTER_VERTICAL );
1941             }
1942
1943             wxRect item_rect = cell_rect;
1944             item_rect.Deflate(PADDING_RIGHTLEFT, 0);
1945
1946             // account for the tree indent (harmless if we're not indented)
1947             item_rect.x += indent;
1948             item_rect.width -= indent;
1949
1950             if ( item_rect.width <= 0 )
1951                 continue;
1952
1953             int state = 0;
1954             if (m_hasFocus && (m_selection.Index(item) != wxNOT_FOUND))
1955                 state |= wxDATAVIEW_CELL_SELECTED;
1956
1957             // TODO: it would be much more efficient to create a clipping
1958             //       region for the entire column being rendered (in the OnPaint
1959             //       of wxDataViewMainWindow) instead of a single clip region for
1960             //       each cell. However it would mean that each renderer should
1961             //       respect the given wxRect's top & bottom coords, eventually
1962             //       violating only the left & right coords - however the user can
1963             //       make its own renderer and thus we cannot be sure of that.
1964             wxDCClipper clip(dc, item_rect);
1965
1966             cell->WXCallRender(item_rect, &dc, state);
1967         }
1968
1969         cell_rect.x += cell_rect.width;
1970     }
1971 }
1972
1973 void wxDataViewMainWindow::OnRenameTimer()
1974 {
1975     // We have to call this here because changes may just have
1976     // been made and no screen update taken place.
1977     if ( m_dirty )
1978     {
1979         // TODO: use wxTheApp->SafeYieldFor(NULL, wxEVT_CATEGORY_UI) instead
1980         //       (needs to be tested!)
1981         wxSafeYield();
1982     }
1983
1984     wxDataViewItem item = GetItemByRow( m_currentRow );
1985
1986     wxRect labelRect = GetItemRect(item, m_currentCol);
1987
1988     m_currentCol->GetRenderer()->StartEditing( item, labelRect );
1989 }
1990
1991 //-----------------------------------------------------------------------------
1992 // Helper class for do operation on the tree node
1993 //-----------------------------------------------------------------------------
1994 class DoJob
1995 {
1996 public:
1997     DoJob() { }
1998     virtual ~DoJob() { }
1999
2000     // The return value control how the tree-walker tranverse the tree
2001     enum
2002     {
2003         DONE,          // Job done, stop traversing and return
2004         SKIP_SUBTREE,  // Ignore the current node's subtree and continue
2005         CONTINUE       // Job not done, continue
2006     };
2007
2008     virtual int operator() ( wxDataViewTreeNode * node ) = 0;
2009 };
2010
2011 bool Walker( wxDataViewTreeNode * node, DoJob & func )
2012 {
2013     wxCHECK_MSG( node, false, "can't walk NULL node" );
2014
2015     switch( func( node ) )
2016     {
2017         case DoJob::DONE:
2018             return true;
2019         case DoJob::SKIP_SUBTREE:
2020             return false;
2021         case DoJob::CONTINUE:
2022             break;
2023     }
2024
2025     if ( node->HasChildren() )
2026     {
2027         const wxDataViewTreeNodes& nodes = node->GetChildNodes();
2028
2029         for ( wxDataViewTreeNodes::const_iterator i = nodes.begin();
2030               i != nodes.end();
2031               ++i )
2032         {
2033             if ( Walker(*i, func) )
2034                 return true;
2035         }
2036     }
2037
2038     return false;
2039 }
2040
2041 bool wxDataViewMainWindow::ItemAdded(const wxDataViewItem & parent, const wxDataViewItem & item)
2042 {
2043     if (IsVirtualList())
2044     {
2045         wxDataViewVirtualListModel *list_model =
2046             (wxDataViewVirtualListModel*) GetModel();
2047         m_count = list_model->GetCount();
2048     }
2049     else
2050     {
2051         SortPrepare();
2052
2053         wxDataViewTreeNode *parentNode = FindNode(parent);
2054
2055         if ( !parentNode )
2056             return false;
2057
2058         wxDataViewItemArray siblings;
2059         GetModel()->GetChildren(parent, siblings);
2060         int itemPos = siblings.Index(item, /*fromEnd=*/true);
2061         wxCHECK_MSG( itemPos != wxNOT_FOUND, false, "adding non-existent item?" );
2062
2063         wxDataViewTreeNode *itemNode = new wxDataViewTreeNode(parentNode, item);
2064         itemNode->SetHasChildren(GetModel()->IsContainer(item));
2065
2066         parentNode->SetHasChildren(true);
2067         parentNode->InsertChild(itemNode, itemPos);
2068         parentNode->ChangeSubTreeCount(+1);
2069
2070         m_count = -1;
2071     }
2072
2073     GetOwner()->InvalidateColBestWidths();
2074     UpdateDisplay();
2075
2076     return true;
2077 }
2078
2079 bool wxDataViewMainWindow::ItemDeleted(const wxDataViewItem& parent,
2080                                        const wxDataViewItem& item)
2081 {
2082     if (IsVirtualList())
2083     {
2084         wxDataViewVirtualListModel *list_model =
2085             (wxDataViewVirtualListModel*) GetModel();
2086         m_count = list_model->GetCount();
2087
2088         if ( !m_selection.empty() )
2089         {
2090             const int row = GetRowByItem(item);
2091
2092             int rowIndexInSelection = wxNOT_FOUND;
2093
2094             const size_t selCount = m_selection.size();
2095             for ( size_t i = 0; i < selCount; i++ )
2096             {
2097                 if ( m_selection[i] == (unsigned)row )
2098                     rowIndexInSelection = i;
2099                 else if ( m_selection[i] > (unsigned)row )
2100                     m_selection[i]--;
2101             }
2102
2103             if ( rowIndexInSelection != wxNOT_FOUND )
2104                 m_selection.RemoveAt(rowIndexInSelection);
2105         }
2106
2107     }
2108     else // general case
2109     {
2110         wxDataViewTreeNode *parentNode = FindNode(parent);
2111
2112         // Notice that it is possible that the item being deleted is not in the
2113         // tree at all, for example we could be deleting a never shown (because
2114         // collapsed) item in a tree model. So it's not an error if we don't know
2115         // about this item, just return without doing anything then.
2116         if ( !parentNode )
2117             return false;
2118
2119         wxCHECK_MSG( parentNode->HasChildren(), false, "parent node doesn't have children?" );
2120         const wxDataViewTreeNodes& parentsChildren = parentNode->GetChildNodes();
2121
2122         // We can't use FindNode() to find 'item', because it was already
2123         // removed from the model by the time ItemDeleted() is called, so we
2124         // have to do it manually. We keep track of its position as well for
2125         // later use.
2126         int itemPosInNode = 0;
2127         wxDataViewTreeNode *itemNode = NULL;
2128         for ( wxDataViewTreeNodes::const_iterator i = parentsChildren.begin();
2129               i != parentsChildren.end();
2130               ++i, ++itemPosInNode )
2131         {
2132             if( (*i)->GetItem() == item )
2133             {
2134                 itemNode = *i;
2135                 break;
2136             }
2137         }
2138
2139         // If the parent wasn't expanded, it's possible that we didn't have a
2140         // node corresponding to 'item' and so there's nothing left to do.
2141         if ( !itemNode )
2142         {
2143             // If this was the last child to be removed, it's possible the parent
2144             // node became a leaf. Let's ask the model about it.
2145             if ( parentNode->GetChildNodes().empty() )
2146                 parentNode->SetHasChildren(GetModel()->IsContainer(parent));
2147
2148             return false;
2149         }
2150
2151         // Delete the item from wxDataViewTreeNode representation:
2152         const int itemsDeleted = 1 + itemNode->GetSubTreeCount();
2153
2154         parentNode->RemoveChild(itemNode);
2155         delete itemNode;
2156         parentNode->ChangeSubTreeCount(-itemsDeleted);
2157
2158         // Make the row number invalid and get a new valid one when user call GetRowCount
2159         m_count = -1;
2160
2161         // If this was the last child to be removed, it's possible the parent
2162         // node became a leaf. Let's ask the model about it.
2163         if ( parentNode->GetChildNodes().empty() )
2164             parentNode->SetHasChildren(GetModel()->IsContainer(parent));
2165
2166         // Update selection by removing 'item' and its entire children tree from the selection.
2167         if ( !m_selection.empty() )
2168         {
2169             // we can't call GetRowByItem() on 'item', as it's already deleted, so compute it from
2170             // the parent ('parentNode') and position in its list of children
2171             int itemRow;
2172             if ( itemPosInNode == 0 )
2173             {
2174                 // 1st child, row number is that of the parent parentNode + 1
2175                 itemRow = GetRowByItem(parentNode->GetItem()) + 1;
2176             }
2177             else
2178             {
2179                 // row number is that of the sibling above 'item' + its subtree if any + 1
2180                 const wxDataViewTreeNode *siblingNode = parentNode->GetChildNodes()[itemPosInNode - 1];
2181
2182                 itemRow = GetRowByItem(siblingNode->GetItem()) +
2183                           siblingNode->GetSubTreeCount() +
2184                           1;
2185             }
2186
2187             wxDataViewSelection newsel(wxDataViewSelectionCmp);
2188
2189             const size_t numSelections = m_selection.size();
2190             for ( size_t i = 0; i < numSelections; ++i )
2191             {
2192                 const int s = m_selection[i];
2193                 if ( s < itemRow )
2194                     newsel.push_back(s);
2195                 else if ( s >= itemRow + itemsDeleted )
2196                     newsel.push_back(s - itemsDeleted);
2197                 // else: deleted item, remove from selection
2198             }
2199
2200             m_selection = newsel;
2201         }
2202     }
2203
2204     // Change the current row to the last row if the current exceed the max row number
2205     if( m_currentRow > GetRowCount() )
2206         ChangeCurrentRow(m_count - 1);
2207
2208     GetOwner()->InvalidateColBestWidths();
2209     UpdateDisplay();
2210
2211     return true;
2212 }
2213
2214 bool wxDataViewMainWindow::ItemChanged(const wxDataViewItem & item)
2215 {
2216     SortPrepare();
2217     g_model->Resort();
2218
2219     GetOwner()->InvalidateColBestWidths();
2220
2221     // Send event
2222     wxWindow *parent = GetParent();
2223     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
2224     le.SetEventObject(parent);
2225     le.SetModel(GetModel());
2226     le.SetItem(item);
2227     parent->ProcessWindowEvent(le);
2228
2229     return true;
2230 }
2231
2232 bool wxDataViewMainWindow::ValueChanged( const wxDataViewItem & item, unsigned int model_column )
2233 {
2234     int view_column = -1;
2235     unsigned int n_col = m_owner->GetColumnCount();
2236     for (unsigned i = 0; i < n_col; i++)
2237     {
2238         wxDataViewColumn *column = m_owner->GetColumn( i );
2239         if (column->GetModelColumn() == model_column)
2240         {
2241             view_column = (int) i;
2242             break;
2243         }
2244     }
2245     if (view_column == -1)
2246         return false;
2247
2248     // NOTE: to be valid, we cannot use e.g. INT_MAX - 1
2249 /*#define MAX_VIRTUAL_WIDTH       100000
2250
2251     wxRect rect( 0, row*m_lineHeight, MAX_VIRTUAL_WIDTH, m_lineHeight );
2252     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2253     Refresh( true, &rect );
2254
2255     return true;
2256 */
2257     SortPrepare();
2258     g_model->Resort();
2259
2260     GetOwner()->InvalidateColBestWidth(view_column);
2261
2262     // Send event
2263     wxWindow *parent = GetParent();
2264     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
2265     le.SetEventObject(parent);
2266     le.SetModel(GetModel());
2267     le.SetItem(item);
2268     le.SetColumn(view_column);
2269     le.SetDataViewColumn(GetOwner()->GetColumn(view_column));
2270     parent->ProcessWindowEvent(le);
2271
2272     return true;
2273 }
2274
2275 bool wxDataViewMainWindow::Cleared()
2276 {
2277     DestroyTree();
2278     m_selection.Clear();
2279
2280     SortPrepare();
2281     BuildTree( GetModel() );
2282
2283     GetOwner()->InvalidateColBestWidths();
2284     UpdateDisplay();
2285
2286     return true;
2287 }
2288
2289 void wxDataViewMainWindow::UpdateDisplay()
2290 {
2291     m_dirty = true;
2292     m_underMouse = NULL;
2293 }
2294
2295 void wxDataViewMainWindow::OnInternalIdle()
2296 {
2297     wxWindow::OnInternalIdle();
2298
2299     if (m_dirty)
2300     {
2301         RecalculateDisplay();
2302         m_dirty = false;
2303     }
2304 }
2305
2306 void wxDataViewMainWindow::RecalculateDisplay()
2307 {
2308     wxDataViewModel *model = GetModel();
2309     if (!model)
2310     {
2311         Refresh();
2312         return;
2313     }
2314
2315     int width = GetEndOfLastCol();
2316     int height = GetLineStart( GetRowCount() );
2317
2318     SetVirtualSize( width, height );
2319     GetOwner()->SetScrollRate( 10, m_lineHeight );
2320
2321     Refresh();
2322 }
2323
2324 void wxDataViewMainWindow::ScrollWindow( int dx, int dy, const wxRect *rect )
2325 {
2326     m_underMouse = NULL;
2327
2328     wxWindow::ScrollWindow( dx, dy, rect );
2329
2330     if (GetOwner()->m_headerArea)
2331         GetOwner()->m_headerArea->ScrollWindow( dx, 0 );
2332 }
2333
2334 void wxDataViewMainWindow::ScrollTo( int rows, int column )
2335 {
2336     m_underMouse = NULL;
2337
2338     int x, y;
2339     m_owner->GetScrollPixelsPerUnit( &x, &y );
2340     int sy = GetLineStart( rows )/y;
2341     int sx = 0;
2342     if( column != -1 )
2343     {
2344         wxRect rect = GetClientRect();
2345         int colnum = 0;
2346         int x_start, w = 0;
2347         int xx, yy, xe;
2348         m_owner->CalcUnscrolledPosition( rect.x, rect.y, &xx, &yy );
2349         for (x_start = 0; colnum < column; colnum++)
2350         {
2351             wxDataViewColumn *col = GetOwner()->GetColumnAt(colnum);
2352             if (col->IsHidden())
2353                 continue;      // skip it!
2354
2355             w = col->GetWidth();
2356             x_start += w;
2357         }
2358
2359         int x_end = x_start + w;
2360         xe = xx + rect.width;
2361         if( x_end > xe )
2362         {
2363             sx = ( xx + x_end - xe )/x;
2364         }
2365         if( x_start < xx )
2366         {
2367             sx = x_start/x;
2368         }
2369     }
2370     m_owner->Scroll( sx, sy );
2371 }
2372
2373 int wxDataViewMainWindow::GetCountPerPage() const
2374 {
2375     wxSize size = GetClientSize();
2376     return size.y / m_lineHeight;
2377 }
2378
2379 int wxDataViewMainWindow::GetEndOfLastCol() const
2380 {
2381     int width = 0;
2382     unsigned int i;
2383     for (i = 0; i < GetOwner()->GetColumnCount(); i++)
2384     {
2385         const wxDataViewColumn *c =
2386             const_cast<wxDataViewCtrl*>(GetOwner())->GetColumnAt( i );
2387
2388         if (!c->IsHidden())
2389             width += c->GetWidth();
2390     }
2391     return width;
2392 }
2393
2394 unsigned int wxDataViewMainWindow::GetFirstVisibleRow() const
2395 {
2396     int x = 0;
2397     int y = 0;
2398     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
2399
2400     return GetLineAt( y );
2401 }
2402
2403 unsigned int wxDataViewMainWindow::GetLastVisibleRow()
2404 {
2405     wxSize client_size = GetClientSize();
2406     m_owner->CalcUnscrolledPosition( client_size.x, client_size.y,
2407                                     &client_size.x, &client_size.y );
2408
2409     // we should deal with the pixel here
2410     unsigned int row = GetLineAt(client_size.y) - 1;
2411
2412     return wxMin( GetRowCount()-1, row );
2413 }
2414
2415 unsigned int wxDataViewMainWindow::GetRowCount()
2416 {
2417     if ( m_count == -1 )
2418     {
2419         m_count = RecalculateCount();
2420         UpdateDisplay();
2421     }
2422     return m_count;
2423 }
2424
2425 void wxDataViewMainWindow::ChangeCurrentRow( unsigned int row )
2426 {
2427     m_currentRow = row;
2428
2429     // send event
2430 }
2431
2432 void wxDataViewMainWindow::SelectAllRows( bool on )
2433 {
2434     if (IsEmpty())
2435         return;
2436
2437     if (on)
2438     {
2439         m_selection.Clear();
2440         for (unsigned int i = 0; i < GetRowCount(); i++)
2441             m_selection.Add( i );
2442         Refresh();
2443     }
2444     else
2445     {
2446         unsigned int first_visible = GetFirstVisibleRow();
2447         unsigned int last_visible = GetLastVisibleRow();
2448         unsigned int i;
2449         for (i = 0; i < m_selection.GetCount(); i++)
2450         {
2451             unsigned int row = m_selection[i];
2452             if ((row >= first_visible) && (row <= last_visible))
2453                 RefreshRow( row );
2454         }
2455         m_selection.Clear();
2456     }
2457 }
2458
2459 void wxDataViewMainWindow::SelectRow( unsigned int row, bool on )
2460 {
2461     if (m_selection.Index( row ) == wxNOT_FOUND)
2462     {
2463         if (on)
2464         {
2465             m_selection.Add( row );
2466             RefreshRow( row );
2467         }
2468     }
2469     else
2470     {
2471         if (!on)
2472         {
2473             m_selection.Remove( row );
2474             RefreshRow( row );
2475         }
2476     }
2477 }
2478
2479 void wxDataViewMainWindow::SelectRows( unsigned int from, unsigned int to, bool on )
2480 {
2481     if (from > to)
2482     {
2483         unsigned int tmp = from;
2484         from = to;
2485         to = tmp;
2486     }
2487
2488     unsigned int i;
2489     for (i = from; i <= to; i++)
2490     {
2491         if (m_selection.Index( i ) == wxNOT_FOUND)
2492         {
2493             if (on)
2494                 m_selection.Add( i );
2495         }
2496         else
2497         {
2498             if (!on)
2499                 m_selection.Remove( i );
2500         }
2501     }
2502     RefreshRows( from, to );
2503 }
2504
2505 void wxDataViewMainWindow::Select( const wxArrayInt& aSelections )
2506 {
2507     for (size_t i=0; i < aSelections.GetCount(); i++)
2508     {
2509         int n = aSelections[i];
2510
2511         m_selection.Add( n );
2512         RefreshRow( n );
2513     }
2514 }
2515
2516 void wxDataViewMainWindow::ReverseRowSelection( unsigned int row )
2517 {
2518     if (m_selection.Index( row ) == wxNOT_FOUND)
2519         m_selection.Add( row );
2520     else
2521         m_selection.Remove( row );
2522     RefreshRow( row );
2523 }
2524
2525 bool wxDataViewMainWindow::IsRowSelected( unsigned int row )
2526 {
2527     return (m_selection.Index( row ) != wxNOT_FOUND);
2528 }
2529
2530 void wxDataViewMainWindow::SendSelectionChangedEvent( const wxDataViewItem& item)
2531 {
2532     wxWindow *parent = GetParent();
2533     wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED, parent->GetId());
2534
2535     le.SetEventObject(parent);
2536     le.SetModel(GetModel());
2537     le.SetItem( item );
2538
2539     parent->ProcessWindowEvent(le);
2540 }
2541
2542 void wxDataViewMainWindow::RefreshRow( unsigned int row )
2543 {
2544     wxRect rect( 0, GetLineStart( row ), GetEndOfLastCol(), GetLineHeight( row ) );
2545     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2546
2547     wxSize client_size = GetClientSize();
2548     wxRect client_rect( 0, 0, client_size.x, client_size.y );
2549     wxRect intersect_rect = client_rect.Intersect( rect );
2550     if (intersect_rect.width > 0)
2551         Refresh( true, &intersect_rect );
2552 }
2553
2554 void wxDataViewMainWindow::RefreshRows( unsigned int from, unsigned int to )
2555 {
2556     if (from > to)
2557     {
2558         unsigned int tmp = to;
2559         to = from;
2560         from = tmp;
2561     }
2562
2563     wxRect rect( 0, GetLineStart( from ), GetEndOfLastCol(), GetLineStart( (to-from+1) ) );
2564     m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
2565
2566     wxSize client_size = GetClientSize();
2567     wxRect client_rect( 0, 0, client_size.x, client_size.y );
2568     wxRect intersect_rect = client_rect.Intersect( rect );
2569     if (intersect_rect.width > 0)
2570         Refresh( true, &intersect_rect );
2571 }
2572
2573 void wxDataViewMainWindow::RefreshRowsAfter( unsigned int firstRow )
2574 {
2575     wxSize client_size = GetClientSize();
2576     int start = GetLineStart( firstRow );
2577     m_owner->CalcScrolledPosition( start, 0, &start, NULL );
2578     if (start > client_size.y) return;
2579
2580     wxRect rect( 0, start, client_size.x, client_size.y - start );
2581
2582     Refresh( true, &rect );
2583 }
2584
2585 wxRect wxDataViewMainWindow::GetLineRect( unsigned int row ) const
2586 {
2587     wxRect rect;
2588     rect.x = 0;
2589     rect.y = GetLineStart( row );
2590     rect.width = GetEndOfLastCol();
2591     rect.height = GetLineHeight( row );
2592
2593     return rect;
2594 }
2595
2596 int wxDataViewMainWindow::GetLineStart( unsigned int row ) const
2597 {
2598     const wxDataViewModel *model = GetModel();
2599
2600     if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
2601     {
2602         // TODO make more efficient
2603
2604         int start = 0;
2605
2606         unsigned int r;
2607         for (r = 0; r < row; r++)
2608         {
2609             const wxDataViewTreeNode* node = GetTreeNodeByRow(r);
2610             if (!node) return start;
2611
2612             wxDataViewItem item = node->GetItem();
2613
2614             unsigned int cols = GetOwner()->GetColumnCount();
2615             unsigned int col;
2616             int height = m_lineHeight;
2617             for (col = 0; col < cols; col++)
2618             {
2619                 const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2620                 if (column->IsHidden())
2621                     continue;      // skip it!
2622
2623                 if ((col != 0) &&
2624                     model->IsContainer(item) &&
2625                     !model->HasContainerColumns(item))
2626                     continue;      // skip it!
2627
2628                 wxDataViewRenderer *renderer =
2629                     const_cast<wxDataViewRenderer*>(column->GetRenderer());
2630                 renderer->PrepareForItem(model, item, column->GetModelColumn());
2631
2632                 height = wxMax( height, renderer->GetSize().y );
2633             }
2634
2635             start += height;
2636         }
2637
2638         return start;
2639     }
2640     else
2641     {
2642         return row * m_lineHeight;
2643     }
2644 }
2645
2646 int wxDataViewMainWindow::GetLineAt( unsigned int y ) const
2647 {
2648     const wxDataViewModel *model = GetModel();
2649
2650     // check for the easy case first
2651     if ( !GetOwner()->HasFlag(wxDV_VARIABLE_LINE_HEIGHT) )
2652         return y / m_lineHeight;
2653
2654     // TODO make more efficient
2655     unsigned int row = 0;
2656     unsigned int yy = 0;
2657     for (;;)
2658     {
2659         const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
2660         if (!node)
2661         {
2662             // not really correct...
2663             return row + ((y-yy) / m_lineHeight);
2664         }
2665
2666         wxDataViewItem item = node->GetItem();
2667
2668         unsigned int cols = GetOwner()->GetColumnCount();
2669         unsigned int col;
2670         int height = m_lineHeight;
2671         for (col = 0; col < cols; col++)
2672         {
2673             const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2674             if (column->IsHidden())
2675                 continue;      // skip it!
2676
2677             if ((col != 0) &&
2678                 model->IsContainer(item) &&
2679                 !model->HasContainerColumns(item))
2680                 continue;      // skip it!
2681
2682             wxDataViewRenderer *renderer =
2683                 const_cast<wxDataViewRenderer*>(column->GetRenderer());
2684             renderer->PrepareForItem(model, item, column->GetModelColumn());
2685
2686             height = wxMax( height, renderer->GetSize().y );
2687         }
2688
2689         yy += height;
2690         if (y < yy)
2691             return row;
2692
2693         row++;
2694     }
2695 }
2696
2697 int wxDataViewMainWindow::GetLineHeight( unsigned int row ) const
2698 {
2699     const wxDataViewModel *model = GetModel();
2700
2701     if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
2702     {
2703         wxASSERT( !IsVirtualList() );
2704
2705         const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
2706         // wxASSERT( node );
2707         if (!node) return m_lineHeight;
2708
2709         wxDataViewItem item = node->GetItem();
2710
2711         int height = m_lineHeight;
2712
2713         unsigned int cols = GetOwner()->GetColumnCount();
2714         unsigned int col;
2715         for (col = 0; col < cols; col++)
2716         {
2717             const wxDataViewColumn *column = GetOwner()->GetColumn(col);
2718             if (column->IsHidden())
2719                 continue;      // skip it!
2720
2721             if ((col != 0) &&
2722                 model->IsContainer(item) &&
2723                 !model->HasContainerColumns(item))
2724                 continue;      // skip it!
2725
2726             wxDataViewRenderer *renderer =
2727                 const_cast<wxDataViewRenderer*>(column->GetRenderer());
2728             renderer->PrepareForItem(model, item, column->GetModelColumn());
2729
2730             height = wxMax( height, renderer->GetSize().y );
2731         }
2732
2733         return height;
2734     }
2735     else
2736     {
2737         return m_lineHeight;
2738     }
2739 }
2740
2741
2742 class RowToTreeNodeJob: public DoJob
2743 {
2744 public:
2745     RowToTreeNodeJob( unsigned int row , int current, wxDataViewTreeNode * node )
2746     {
2747         this->row = row;
2748         this->current = current;
2749         ret = NULL;
2750         parent = node;
2751     }
2752
2753     virtual int operator() ( wxDataViewTreeNode * node )
2754     {
2755         current ++;
2756         if( current == static_cast<int>(row))
2757         {
2758             ret = node;
2759             return DoJob::DONE;
2760         }
2761
2762         if( node->GetSubTreeCount() + current < static_cast<int>(row) )
2763         {
2764             current += node->GetSubTreeCount();
2765             return  DoJob::SKIP_SUBTREE;
2766         }
2767         else
2768         {
2769             parent = node;
2770
2771             // If the current node has only leaf children, we can find the
2772             // desired node directly. This can speed up finding the node
2773             // in some cases, and will have a very good effect for list views.
2774             if ( node->HasChildren() &&
2775                  (int)node->GetChildNodes().size() == node->GetSubTreeCount() )
2776             {
2777                 const int index = static_cast<int>(row) - current - 1;
2778                 ret = node->GetChildNodes()[index];
2779                 return DoJob::DONE;
2780             }
2781
2782             return DoJob::CONTINUE;
2783         }
2784     }
2785
2786     wxDataViewTreeNode * GetResult() const
2787         { return ret; }
2788
2789 private:
2790     unsigned int row;
2791     int current;
2792     wxDataViewTreeNode * ret;
2793     wxDataViewTreeNode * parent;
2794 };
2795
2796 wxDataViewTreeNode * wxDataViewMainWindow::GetTreeNodeByRow(unsigned int row) const
2797 {
2798     wxASSERT( !IsVirtualList() );
2799
2800     RowToTreeNodeJob job( row , -2, m_root );
2801     Walker( m_root , job );
2802     return job.GetResult();
2803 }
2804
2805 wxDataViewItem wxDataViewMainWindow::GetItemByRow(unsigned int row) const
2806 {
2807     if (IsVirtualList())
2808     {
2809         return wxDataViewItem( wxUIntToPtr(row+1) );
2810     }
2811     else
2812     {
2813         wxDataViewTreeNode *node = GetTreeNodeByRow(row);
2814         return node ? node->GetItem() : wxDataViewItem();
2815     }
2816 }
2817
2818 bool
2819 wxDataViewMainWindow::SendExpanderEvent(wxEventType type,
2820                                         const wxDataViewItem& item)
2821 {
2822     wxWindow *parent = GetParent();
2823     wxDataViewEvent le(type, parent->GetId());
2824
2825     le.SetEventObject(parent);
2826     le.SetModel(GetModel());
2827     le.SetItem( item );
2828
2829     return !parent->ProcessWindowEvent(le) || le.IsAllowed();
2830 }
2831
2832 bool wxDataViewMainWindow::IsExpanded( unsigned int row ) const
2833 {
2834     if (IsList())
2835         return false;
2836
2837     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2838     if (!node)
2839         return false;
2840
2841     if (!node->HasChildren())
2842         return false;
2843
2844     return node->IsOpen();
2845 }
2846
2847 bool wxDataViewMainWindow::HasChildren( unsigned int row ) const
2848 {
2849     if (IsList())
2850         return false;
2851
2852     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2853     if (!node)
2854         return false;
2855
2856     if (!node->HasChildren())
2857         return false;
2858
2859     return true;
2860 }
2861
2862 void wxDataViewMainWindow::Expand( unsigned int row )
2863 {
2864     if (IsList())
2865         return;
2866
2867     wxDataViewTreeNode * node = GetTreeNodeByRow(row);
2868     if (!node)
2869         return;
2870
2871     if (!node->HasChildren())
2872         return;
2873
2874             if (!node->IsOpen())
2875             {
2876                 if ( !SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, node->GetItem()) )
2877                 {
2878                     // Vetoed by the event handler.
2879                     return;
2880                 }
2881
2882                 node->ToggleOpen();
2883
2884                 // build the children of current node
2885                 if( node->GetChildNodes().empty() )
2886                 {
2887                     SortPrepare();
2888                     ::BuildTreeHelper(GetModel(), node->GetItem(), node);
2889                 }
2890
2891                 // By expanding the node all row indices that are currently in the selection list
2892                 // and are greater than our node have become invalid. So we have to correct that now.
2893                 const unsigned rowAdjustment = node->GetSubTreeCount();
2894                 for(unsigned i=0; i<m_selection.size(); ++i)
2895                 {
2896                     const unsigned testRow = m_selection[i];
2897                     // all rows above us are not affected, so skip them
2898                     if(testRow <= row)
2899                         continue;
2900
2901                     m_selection[i] += rowAdjustment;
2902                 }
2903
2904                 if(m_currentRow > row)
2905                     ChangeCurrentRow(m_currentRow + rowAdjustment);
2906
2907                 m_count = -1;
2908                 UpdateDisplay();
2909                 // Send the expanded event
2910                 SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED,node->GetItem());
2911             }
2912 }
2913
2914 void wxDataViewMainWindow::Collapse(unsigned int row)
2915 {
2916     if (IsList())
2917         return;
2918
2919     wxDataViewTreeNode *node = GetTreeNodeByRow(row);
2920     if (!node)
2921         return;
2922
2923     if (!node->HasChildren())
2924         return;
2925
2926         if (node->IsOpen())
2927         {
2928             if ( !SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING,node->GetItem()) )
2929             {
2930                 // Vetoed by the event handler.
2931                 return;
2932             }
2933
2934             // Find out if there are selected items below the current node.
2935             bool selectCollapsingRow = false;
2936             const unsigned rowAdjustment = node->GetSubTreeCount();
2937             unsigned maxRowToBeTested = row + rowAdjustment;
2938             for(unsigned i=0; i<m_selection.size(); ++i)
2939             {
2940                 const unsigned testRow = m_selection[i];
2941                 if(testRow > row && testRow <= maxRowToBeTested)
2942                 {
2943                     selectCollapsingRow = true;
2944                     // get out as soon as we have found a node that is selected
2945                     break;
2946                 }
2947             }
2948
2949             node->ToggleOpen();
2950
2951             // If the node to be closed has selected items the user won't see those any longer.
2952             // We select the collapsing node in this case.
2953             if(selectCollapsingRow)
2954             {
2955                 SelectAllRows(false);
2956                 ChangeCurrentRow(row);
2957                 SelectRow(row, true);
2958                 SendSelectionChangedEvent(GetItemByRow(row));
2959             }
2960             else
2961             {
2962                 // if there were no selected items below our node we still need to "fix" the
2963                 // selection list to adjust for the changing of the row indices.
2964                 // We actually do the opposite of what we are doing in Expand().
2965                 for(unsigned i=0; i<m_selection.size(); ++i)
2966                 {
2967                     const unsigned testRow = m_selection[i];
2968                     // all rows above us are not affected, so skip them
2969                     if(testRow <= row)
2970                         continue;
2971
2972                     m_selection[i] -= rowAdjustment;
2973                 }
2974
2975                 // if the "current row" is being collapsed away we change it to the current row ;-)
2976                 if(m_currentRow > row && m_currentRow <= maxRowToBeTested)
2977                     ChangeCurrentRow(row);
2978                 else if(m_currentRow > row)
2979                     ChangeCurrentRow(m_currentRow - rowAdjustment);
2980             }
2981
2982             m_count = -1;
2983             UpdateDisplay();
2984             SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED,node->GetItem());
2985         }
2986 }
2987
2988 wxDataViewTreeNode * wxDataViewMainWindow::FindNode( const wxDataViewItem & item )
2989 {
2990     const wxDataViewModel * model = GetModel();
2991     if( model == NULL )
2992         return NULL;
2993
2994     if (!item.IsOk())
2995         return m_root;
2996
2997     // Compose the parent-chain for the item we are looking for
2998     wxVector<wxDataViewItem> parentChain;
2999     wxDataViewItem it( item );
3000     while( it.IsOk() )
3001     {
3002         parentChain.push_back(it);
3003         it = model->GetParent(it);
3004     }
3005
3006     // Find the item along the parent-chain.
3007     // This algorithm is designed to speed up the node-finding method
3008     wxDataViewTreeNode* node = m_root;
3009     for( unsigned iter = parentChain.size()-1; ; --iter )
3010     {
3011         if( node->HasChildren() )
3012         {
3013             if( node->GetChildNodes().empty() )
3014             {
3015                 // Even though the item is a container, it doesn't have any
3016                 // child nodes in the control's representation yet. We have
3017                 // to realize its subtree now.
3018                 SortPrepare();
3019                 ::BuildTreeHelper(model, node->GetItem(), node);
3020             }
3021
3022             const wxDataViewTreeNodes& nodes = node->GetChildNodes();
3023             bool found = false;
3024
3025             for (unsigned i = 0; i < nodes.GetCount(); ++i)
3026             {
3027                 wxDataViewTreeNode* currentNode = nodes[i];
3028                 if (currentNode->GetItem() == parentChain[iter])
3029                 {
3030                     if (currentNode->GetItem() == item)
3031                         return currentNode;
3032
3033                     node = currentNode;
3034                     found = true;
3035                     break;
3036                 }
3037             }
3038             if (!found)
3039                 return NULL;
3040         }
3041         else
3042             return NULL;
3043
3044         if ( !iter )
3045             break;
3046     }
3047     return NULL;
3048 }
3049
3050 void wxDataViewMainWindow::HitTest( const wxPoint & point, wxDataViewItem & item,
3051                                     wxDataViewColumn* &column )
3052 {
3053     wxDataViewColumn *col = NULL;
3054     unsigned int cols = GetOwner()->GetColumnCount();
3055     unsigned int colnum = 0;
3056     int x, y;
3057     m_owner->CalcUnscrolledPosition( point.x, point.y, &x, &y );
3058     for (unsigned x_start = 0; colnum < cols; colnum++)
3059     {
3060         col = GetOwner()->GetColumnAt(colnum);
3061         if (col->IsHidden())
3062             continue;      // skip it!
3063
3064         unsigned int w = col->GetWidth();
3065         if (x_start+w >= (unsigned int)x)
3066             break;
3067
3068         x_start += w;
3069     }
3070
3071     column = col;
3072     item = GetItemByRow( GetLineAt( y ) );
3073 }
3074
3075 wxRect wxDataViewMainWindow::GetItemRect( const wxDataViewItem & item,
3076                                           const wxDataViewColumn* column )
3077 {
3078     int xpos = 0;
3079     int width = 0;
3080
3081     unsigned int cols = GetOwner()->GetColumnCount();
3082     // If column is null the loop will compute the combined width of all columns.
3083     // Otherwise, it will compute the x position of the column we are looking for.
3084     for (unsigned int i = 0; i < cols; i++)
3085     {
3086         wxDataViewColumn* col = GetOwner()->GetColumnAt( i );
3087
3088         if (col == column)
3089             break;
3090
3091         if (col->IsHidden())
3092             continue;      // skip it!
3093
3094         xpos += col->GetWidth();
3095         width += col->GetWidth();
3096     }
3097
3098     if(column != 0)
3099     {
3100         // If we have a column, we need can get its width directly.
3101         if(column->IsHidden())
3102             width = 0;
3103         else
3104             width = column->GetWidth();
3105
3106     }
3107     else
3108     {
3109         // If we have no column, we reset the x position back to zero.
3110         xpos = 0;
3111     }
3112
3113     // we have to take an expander column into account and compute its indentation
3114     // to get the correct x position where the actual text is
3115     int indent = 0;
3116     int row = GetRowByItem(item);
3117     if (!IsList() &&
3118             (column == 0 || GetExpanderColumnOrFirstOne(GetOwner()) == column) )
3119     {
3120         wxDataViewTreeNode* node = GetTreeNodeByRow(row);
3121         indent = GetOwner()->GetIndent() * node->GetIndentLevel();
3122         indent = indent + m_lineHeight; // use m_lineHeight as the width of the expander
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*) 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::DONE;
3168         }
3169
3170         if( node->GetItem() == *m_iter )
3171         {
3172             m_iter++;
3173             return DoJob::CONTINUE;
3174         }
3175         else
3176         {
3177             ret += node->GetSubTreeCount();
3178             return DoJob::SKIP_SUBTREE;
3179         }
3180
3181     }
3182
3183     // the row number is begin from zero
3184     int GetResult() const
3185         { return ret -1; }
3186
3187 private:
3188     wxVector<wxDataViewItem>::reverse_iterator m_iter;
3189     wxDataViewItem item;
3190     int ret;
3191
3192 };
3193
3194 int wxDataViewMainWindow::GetRowByItem(const wxDataViewItem & item) const
3195 {
3196     const wxDataViewModel * model = GetModel();
3197     if( model == NULL )
3198         return -1;
3199
3200     if (IsVirtualList())
3201     {
3202         return wxPtrToUInt( item.GetID() ) -1;
3203     }
3204     else
3205     {
3206         if( !item.IsOk() )
3207             return -1;
3208
3209         // Compose the parent-chain of the item we are looking for
3210         wxVector<wxDataViewItem> parentChain;
3211         wxDataViewItem it( item );
3212         while( it.IsOk() )
3213         {
3214             parentChain.push_back(it);
3215             it = model->GetParent(it);
3216         }
3217
3218         // add an 'invalid' item to represent our 'invisible' root node
3219         parentChain.push_back(wxDataViewItem());
3220
3221         // the parent chain was created by adding the deepest parent first.
3222         // so if we want to start at the root node, we have to iterate backwards through the vector
3223         ItemToRowJob job( item, parentChain.rbegin() );
3224         Walker( m_root, job );
3225         return job.GetResult();
3226     }
3227 }
3228
3229 static void BuildTreeHelper( const wxDataViewModel * model,  const wxDataViewItem & item,
3230                              wxDataViewTreeNode * node)
3231 {
3232     if( !model->IsContainer( item ) )
3233         return;
3234
3235     wxDataViewItemArray children;
3236     unsigned int num = model->GetChildren( item, children);
3237
3238     for ( unsigned int index = 0; index < num; index++ )
3239     {
3240         wxDataViewTreeNode *n = new wxDataViewTreeNode(node, children[index]);
3241
3242         if( model->IsContainer(children[index]) )
3243             n->SetHasChildren( true );
3244
3245         node->InsertChild(n, index);
3246     }
3247
3248     wxASSERT( node->IsOpen() );
3249     node->ChangeSubTreeCount(+num);
3250 }
3251
3252 void wxDataViewMainWindow::BuildTree(wxDataViewModel * model)
3253 {
3254     DestroyTree();
3255
3256     if (GetModel()->IsVirtualListModel())
3257     {
3258         m_count = -1;
3259         return;
3260     }
3261
3262     m_root = wxDataViewTreeNode::CreateRootNode();
3263
3264     // First we define a invalid item to fetch the top-level elements
3265     wxDataViewItem item;
3266     SortPrepare();
3267     BuildTreeHelper( model, item, m_root);
3268     m_count = -1;
3269 }
3270
3271 void wxDataViewMainWindow::DestroyTree()
3272 {
3273     if (!IsVirtualList())
3274     {
3275         wxDELETE(m_root);
3276         m_count = 0;
3277     }
3278 }
3279
3280 void wxDataViewMainWindow::OnChar( wxKeyEvent &event )
3281 {
3282     wxWindow * const parent = GetParent();
3283
3284     // propagate the char event upwards
3285     wxKeyEvent eventForParent(event);
3286     eventForParent.SetEventObject(parent);
3287     if ( parent->ProcessWindowEvent(eventForParent) )
3288         return;
3289
3290     if ( parent->HandleAsNavigationKey(event) )
3291         return;
3292
3293     // no item -> nothing to do
3294     if (!HasCurrentRow())
3295     {
3296         event.Skip();
3297         return;
3298     }
3299
3300     // don't use m_linesPerPage directly as it might not be computed yet
3301     const int pageSize = GetCountPerPage();
3302     wxCHECK_RET( pageSize, wxT("should have non zero page size") );
3303
3304     switch ( event.GetKeyCode() )
3305     {
3306         case WXK_RETURN:
3307             {
3308                 // Enter activates the item, i.e. sends wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED to
3309                 // it. Only if that event is not handled do we activate column renderer (which
3310                 // is normally done by Space).
3311
3312                 const wxDataViewItem item = GetItemByRow(m_currentRow);
3313
3314                 wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED,
3315                                    parent->GetId());
3316                 le.SetItem(item);
3317                 le.SetEventObject(parent);
3318                 le.SetModel(GetModel());
3319
3320                 if ( parent->ProcessWindowEvent(le) )
3321                     break;
3322                 // else: fall through to WXK_SPACE handling
3323             }
3324
3325         case WXK_SPACE:
3326             {
3327                 // Activate the first activatable column if there is any:
3328                 wxDataViewColumn *activatableCol = NULL;
3329
3330                 const unsigned cols = GetOwner()->GetColumnCount();
3331                 for ( unsigned i = 0; i < cols; i++ )
3332                 {
3333                     wxDataViewColumn *c = GetOwner()->GetColumnAt(i);
3334                     if ( c->IsHidden() )
3335                         continue;
3336                     if ( c->GetRenderer()->GetMode() == wxDATAVIEW_CELL_ACTIVATABLE )
3337                     {
3338                         activatableCol = c;
3339                         break;
3340                     }
3341                 }
3342
3343                 if ( activatableCol )
3344                 {
3345                     const wxDataViewItem item = GetItemByRow(m_currentRow);
3346
3347                     const unsigned colIdx = activatableCol->GetModelColumn();
3348                     const wxRect cell_rect = GetOwner()->GetItemRect(item, activatableCol);
3349
3350                     wxDataViewRenderer *cell = activatableCol->GetRenderer();
3351                     cell->PrepareForItem(GetModel(), item, colIdx);
3352                     cell->WXOnActivate(cell_rect, GetModel(), item, colIdx);
3353                 }
3354             }
3355             break;
3356
3357         case WXK_UP:
3358             if ( m_currentRow > 0 )
3359                 OnVerticalNavigation( m_currentRow - 1, event );
3360             break;
3361
3362         case WXK_DOWN:
3363             if ( m_currentRow + 1 < GetRowCount() )
3364                 OnVerticalNavigation( m_currentRow + 1, event );
3365             break;
3366         // Add the process for tree expanding/collapsing
3367         case WXK_LEFT:
3368             OnLeftKey();
3369             break;
3370
3371         case WXK_RIGHT:
3372             OnRightKey();
3373             break;
3374
3375         case WXK_END:
3376         {
3377             if (!IsEmpty())
3378                 OnVerticalNavigation( GetRowCount() - 1, event );
3379             break;
3380         }
3381         case WXK_HOME:
3382             if (!IsEmpty())
3383                 OnVerticalNavigation( 0, event );
3384             break;
3385
3386         case WXK_PAGEUP:
3387             {
3388                 int steps = pageSize - 1;
3389                 int index = m_currentRow - steps;
3390                 if (index < 0)
3391                     index = 0;
3392
3393                 OnVerticalNavigation( index, event );
3394             }
3395             break;
3396
3397         case WXK_PAGEDOWN:
3398             {
3399                 int steps = pageSize - 1;
3400                 unsigned int index = m_currentRow + steps;
3401                 unsigned int count = GetRowCount();
3402                 if ( index >= count )
3403                     index = count - 1;
3404
3405                 OnVerticalNavigation( index, event );
3406             }
3407             break;
3408
3409         case WXK_F2:
3410             {
3411                 if( !m_selection.empty() )
3412                 {
3413                     // TODO: we need to revise that when we have a concept for a 'current column'
3414                     GetOwner()->StartEditor(GetItemByRow(m_selection[0]), 0);
3415                 }
3416             }
3417             break;
3418
3419         default:
3420             event.Skip();
3421     }
3422 }
3423
3424 void wxDataViewMainWindow::OnVerticalNavigation(unsigned int newCurrent, const wxKeyEvent& event)
3425 {
3426     wxCHECK_RET( newCurrent < GetRowCount(),
3427                 wxT("invalid item index in OnVerticalNavigation()") );
3428
3429     // if there is no selection, we cannot move it anywhere
3430     if (!HasCurrentRow())
3431         return;
3432
3433     unsigned int oldCurrent = m_currentRow;
3434
3435     // in single selection we just ignore Shift as we can't select several
3436     // items anyhow
3437     if ( event.ShiftDown() && !IsSingleSel() )
3438     {
3439         RefreshRow( oldCurrent );
3440
3441         ChangeCurrentRow( newCurrent );
3442
3443         // select all the items between the old and the new one
3444         if ( oldCurrent > newCurrent )
3445         {
3446             newCurrent = oldCurrent;
3447             oldCurrent = m_currentRow;
3448         }
3449
3450         SelectRows( oldCurrent, newCurrent, true );
3451         if (oldCurrent!=newCurrent)
3452             SendSelectionChangedEvent(GetItemByRow(m_selection[0]));
3453     }
3454     else // !shift
3455     {
3456         RefreshRow( oldCurrent );
3457
3458         // all previously selected items are unselected unless ctrl is held
3459         if ( !event.ControlDown() )
3460             SelectAllRows(false);
3461
3462         ChangeCurrentRow( newCurrent );
3463
3464         if ( !event.ControlDown() )
3465         {
3466             SelectRow( m_currentRow, true );
3467             SendSelectionChangedEvent(GetItemByRow(m_currentRow));
3468         }
3469         else
3470             RefreshRow( m_currentRow );
3471     }
3472
3473     GetOwner()->EnsureVisible( m_currentRow, -1 );
3474 }
3475
3476 void wxDataViewMainWindow::OnLeftKey()
3477 {
3478     if (IsList())
3479        return;
3480
3481     wxDataViewTreeNode* node = GetTreeNodeByRow(m_currentRow);
3482     if (!node)
3483         return;
3484
3485     if (node->HasChildren() && node->IsOpen())
3486     {
3487         Collapse(m_currentRow);
3488     }
3489     else    // if the node is already closed we move the selection to its parent
3490     {
3491         wxDataViewTreeNode *parent_node = node->GetParent();
3492
3493         if (parent_node)
3494         {
3495             int parent = GetRowByItem( parent_node->GetItem() );
3496             if ( parent >= 0 )
3497             {
3498                 unsigned int row = m_currentRow;
3499                 SelectRow( row, false);
3500                 SelectRow( parent, true );
3501                 ChangeCurrentRow( parent );
3502                 GetOwner()->EnsureVisible( parent, -1 );
3503                 SendSelectionChangedEvent( parent_node->GetItem() );
3504             }
3505         }
3506     }
3507 }
3508
3509 void wxDataViewMainWindow::OnRightKey()
3510 {
3511     if (!IsExpanded( m_currentRow ))
3512         Expand( m_currentRow );
3513     else
3514     {
3515         unsigned int row = m_currentRow;
3516         SelectRow( row, false );
3517         SelectRow( row + 1, true );
3518         ChangeCurrentRow( row + 1 );
3519         GetOwner()->EnsureVisible( row + 1, -1 );
3520         SendSelectionChangedEvent( GetItemByRow(row+1) );
3521     }
3522 }
3523
3524 void wxDataViewMainWindow::OnMouse( wxMouseEvent &event )
3525 {
3526     if (event.GetEventType() == wxEVT_MOUSEWHEEL)
3527     {
3528         // let the base handle mouse wheel events.
3529         event.Skip();
3530         return;
3531     }
3532
3533     // set the focus to ourself if any of the mouse buttons are pressed
3534     if(event.ButtonDown() && !HasFocus())
3535         SetFocus();
3536
3537     int x = event.GetX();
3538     int y = event.GetY();
3539     m_owner->CalcUnscrolledPosition( x, y, &x, &y );
3540     wxDataViewColumn *col = NULL;
3541
3542     int xpos = 0;
3543     unsigned int cols = GetOwner()->GetColumnCount();
3544     unsigned int i;
3545     for (i = 0; i < cols; i++)
3546     {
3547         wxDataViewColumn *c = GetOwner()->GetColumnAt( i );
3548         if (c->IsHidden())
3549             continue;      // skip it!
3550
3551         if (x < xpos + c->GetWidth())
3552         {
3553             col = c;
3554             break;
3555         }
3556         xpos += c->GetWidth();
3557     }
3558
3559     wxDataViewModel* const model = GetModel();
3560
3561     const unsigned int current = GetLineAt( y );
3562     const wxDataViewItem item = GetItemByRow(current);
3563
3564     // Handle right clicking here, before everything else as context menu
3565     // events should be sent even when we click outside of any item, unlike all
3566     // the other ones.
3567     if (event.RightUp())
3568     {
3569         wxWindow *parent = GetParent();
3570         wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_CONTEXT_MENU, parent->GetId());
3571         le.SetEventObject(parent);
3572         le.SetModel(model);
3573
3574         if ( item.IsOk() && col )
3575         {
3576             le.SetItem( item );
3577             le.SetColumn( col->GetModelColumn() );
3578             le.SetDataViewColumn( col );
3579
3580             wxVariant value;
3581             model->GetValue( value, item, col->GetModelColumn() );
3582             le.SetValue(value);
3583         }
3584
3585         parent->ProcessWindowEvent(le);
3586         return;
3587     }
3588
3589     if (!col)
3590     {
3591         event.Skip();
3592         return;
3593     }
3594
3595     wxDataViewRenderer *cell = col->GetRenderer();
3596     if ((current >= GetRowCount()) || (x > GetEndOfLastCol()))
3597     {
3598         // Unselect all if below the last row ?
3599         event.Skip();
3600         return;
3601     }
3602
3603     wxDataViewColumn* const
3604         expander = GetExpanderColumnOrFirstOne(GetOwner());
3605
3606     // Test whether the mouse is hovering over the expander (a.k.a tree "+"
3607     // button) and also determine the offset of the real cell start, skipping
3608     // the indentation and the expander itself.
3609     bool hoverOverExpander = false;
3610     int itemOffset = 0;
3611     if ((!IsList()) && (expander == col))
3612     {
3613         wxDataViewTreeNode * node = GetTreeNodeByRow(current);
3614
3615         int indent = node->GetIndentLevel();
3616         itemOffset = GetOwner()->GetIndent()*indent;
3617
3618         if ( node->HasChildren() )
3619         {
3620             // we make the rectangle we are looking in a bit bigger than the actual
3621             // visual expander so the user can hit that little thing reliably
3622             wxRect rect(itemOffset,
3623                         GetLineStart( current ) + (GetLineHeight(current) - m_lineHeight)/2,
3624                         m_lineHeight, m_lineHeight);
3625
3626             if( rect.Contains(x, y) )
3627             {
3628                 // So the mouse is over the expander
3629                 hoverOverExpander = true;
3630                 if (m_underMouse && m_underMouse != node)
3631                 {
3632                     // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
3633                     RefreshRow(GetRowByItem(m_underMouse->GetItem()));
3634                 }
3635                 if (m_underMouse != node)
3636                 {
3637                     // wxLogMessage("Do the row: %d", current);
3638                     RefreshRow(current);
3639                 }
3640                 m_underMouse = node;
3641             }
3642         }
3643
3644         // Account for the expander as well, even if this item doesn't have it,
3645         // its parent does so it still counts for the offset.
3646         itemOffset += m_lineHeight;
3647     }
3648     if (!hoverOverExpander)
3649     {
3650         if (m_underMouse != NULL)
3651         {
3652             // wxLogMessage("Undo the row: %d", GetRowByItem(m_underMouse->GetItem()));
3653             RefreshRow(GetRowByItem(m_underMouse->GetItem()));
3654             m_underMouse = NULL;
3655         }
3656     }
3657
3658 #if wxUSE_DRAG_AND_DROP
3659     if (event.Dragging())
3660     {
3661         if (m_dragCount == 0)
3662         {
3663             // we have to report the raw, physical coords as we want to be
3664             // able to call HitTest(event.m_pointDrag) from the user code to
3665             // get the item being dragged
3666             m_dragStart = event.GetPosition();
3667         }
3668
3669         m_dragCount++;
3670
3671         if (m_dragCount != 3)
3672             return;
3673
3674         if (event.LeftIsDown())
3675         {
3676             m_owner->CalcUnscrolledPosition( m_dragStart.x, m_dragStart.y,
3677                                              &m_dragStart.x, &m_dragStart.y );
3678             unsigned int drag_item_row = GetLineAt( m_dragStart.y );
3679             wxDataViewItem itemDragged = GetItemByRow( drag_item_row );
3680
3681             // Notify cell about drag
3682             wxDataViewEvent event( wxEVT_COMMAND_DATAVIEW_ITEM_BEGIN_DRAG, m_owner->GetId() );
3683             event.SetEventObject( m_owner );
3684             event.SetItem( itemDragged );
3685             event.SetModel( model );
3686             if (!m_owner->HandleWindowEvent( event ))
3687                 return;
3688
3689             if (!event.IsAllowed())
3690                 return;
3691
3692             wxDataObject *obj = event.GetDataObject();
3693             if (!obj)
3694                 return;
3695
3696             wxDataViewDropSource drag( this, drag_item_row );
3697             drag.SetData( *obj );
3698             /* wxDragResult res = */ drag.DoDragDrop();
3699             delete obj;
3700         }
3701         return;
3702     }
3703     else
3704     {
3705         m_dragCount = 0;
3706     }
3707 #endif // wxUSE_DRAG_AND_DROP
3708
3709     bool simulateClick = false;
3710
3711     if (event.ButtonDClick())
3712     {
3713         m_renameTimer->Stop();
3714         m_lastOnSame = false;
3715     }
3716
3717     bool ignore_other_columns =
3718         ((expander != col) &&
3719         (model->IsContainer(item)) &&
3720         (!model->HasContainerColumns(item)));
3721
3722     if (event.LeftDClick())
3723     {
3724         if(hoverOverExpander)
3725         {
3726             // a double click on the expander will be converted into a "simulated" normal click
3727             simulateClick = true;
3728         }
3729         else if ( current == m_lineLastClicked )
3730         {
3731             bool activated = false;
3732
3733             if ((!ignore_other_columns) && (cell->GetMode() == wxDATAVIEW_CELL_ACTIVATABLE))
3734             {
3735                 const unsigned colIdx = col->GetModelColumn();
3736
3737                 cell->PrepareForItem(model, item, colIdx);
3738
3739                 wxRect cell_rect( xpos, GetLineStart( current ),
3740                                 col->GetWidth(), GetLineHeight( current ) );
3741                 activated = cell->WXOnActivate( cell_rect, model, item, colIdx );
3742             }
3743
3744             if ( !activated )
3745             {
3746                 wxWindow *parent = GetParent();
3747                 wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_ACTIVATED, parent->GetId());
3748                 le.SetItem( item );
3749                 le.SetColumn( col->GetModelColumn() );
3750                 le.SetDataViewColumn( col );
3751                 le.SetEventObject(parent);
3752                 le.SetModel(GetModel());
3753
3754                 parent->ProcessWindowEvent(le);
3755             }
3756             return;
3757         }
3758         else
3759         {
3760             // The first click was on another item, so don't interpret this as
3761             // a double click, but as a simple click instead
3762             simulateClick = true;
3763         }
3764     }
3765
3766     if (event.LeftUp() && !hoverOverExpander)
3767     {
3768         if (m_lineSelectSingleOnUp != (unsigned int)-1)
3769         {
3770             // select single line
3771             SelectAllRows( false );
3772             SelectRow( m_lineSelectSingleOnUp, true );
3773             SendSelectionChangedEvent( GetItemByRow(m_lineSelectSingleOnUp) );
3774         }
3775
3776         // If the user click the expander, we do not do editing even if the column
3777         // with expander are editable
3778         if (m_lastOnSame && !ignore_other_columns)
3779         {
3780             if ((col == m_currentCol) && (current == m_currentRow) &&
3781                 (cell->GetMode() & wxDATAVIEW_CELL_EDITABLE) )
3782             {
3783                 m_renameTimer->Start( 100, true );
3784             }
3785         }
3786
3787         m_lastOnSame = false;
3788         m_lineSelectSingleOnUp = (unsigned int)-1;
3789     }
3790     else if(!event.LeftUp())
3791     {
3792         // This is necessary, because after a DnD operation in
3793         // from and to ourself, the up event is swallowed by the
3794         // DnD code. So on next non-up event (which means here and
3795         // now) m_lineSelectSingleOnUp should be reset.
3796         m_lineSelectSingleOnUp = (unsigned int)-1;
3797     }
3798
3799     if (event.RightDown())
3800     {
3801         m_lineBeforeLastClicked = m_lineLastClicked;
3802         m_lineLastClicked = current;
3803
3804         // If the item is already selected, do not update the selection.
3805         // Multi-selections should not be cleared if a selected item is clicked.
3806         if (!IsRowSelected(current))
3807         {
3808             SelectAllRows(false);
3809             const unsigned oldCurrent = m_currentRow;
3810             ChangeCurrentRow(current);
3811             SelectRow(m_currentRow,true);
3812             RefreshRow(oldCurrent);
3813             SendSelectionChangedEvent(GetItemByRow( m_currentRow ) );
3814         }
3815     }
3816     else if (event.MiddleDown())
3817     {
3818     }
3819
3820     if((event.LeftDown() || simulateClick) && hoverOverExpander)
3821     {
3822         wxDataViewTreeNode* node = GetTreeNodeByRow(current);
3823
3824         // hoverOverExpander being true tells us that our node must be
3825         // valid and have children.
3826         // So we don't need any extra checks.
3827         if( node->IsOpen() )
3828             Collapse(current);
3829         else
3830             Expand(current);
3831     }
3832     else if ((event.LeftDown() || simulateClick) && !hoverOverExpander)
3833     {
3834         m_lineBeforeLastClicked = m_lineLastClicked;
3835         m_lineLastClicked = current;
3836
3837         unsigned int oldCurrentRow = m_currentRow;
3838         bool oldWasSelected = IsRowSelected(m_currentRow);
3839
3840         bool cmdModifierDown = event.CmdDown();
3841         if ( IsSingleSel() || !(cmdModifierDown || event.ShiftDown()) )
3842         {
3843             if ( IsSingleSel() || !IsRowSelected(current) )
3844             {
3845                 SelectAllRows( false );
3846                 ChangeCurrentRow(current);
3847                 SelectRow(m_currentRow,true);
3848                 SendSelectionChangedEvent(GetItemByRow( m_currentRow ) );
3849             }
3850             else // multi sel & current is highlighted & no mod keys
3851             {
3852                 m_lineSelectSingleOnUp = current;
3853                 ChangeCurrentRow(current); // change focus
3854             }
3855         }
3856         else // multi sel & either ctrl or shift is down
3857         {
3858             if (cmdModifierDown)
3859             {
3860                 ChangeCurrentRow(current);
3861                 ReverseRowSelection(m_currentRow);
3862                 SendSelectionChangedEvent(GetItemByRow(m_currentRow));
3863             }
3864             else if (event.ShiftDown())
3865             {
3866                 ChangeCurrentRow(current);
3867
3868                 unsigned int lineFrom = oldCurrentRow,
3869                     lineTo = current;
3870
3871                 if ( lineTo < lineFrom )
3872                 {
3873                     lineTo = lineFrom;
3874                     lineFrom = m_currentRow;
3875                 }
3876
3877                 SelectRows(lineFrom, lineTo, true);
3878                 SendSelectionChangedEvent(GetItemByRow(m_selection[0]) );
3879             }
3880             else // !ctrl, !shift
3881             {
3882                 // test in the enclosing if should make it impossible
3883                 wxFAIL_MSG( wxT("how did we get here?") );
3884             }
3885         }
3886
3887         if (m_currentRow != oldCurrentRow)
3888             RefreshRow( oldCurrentRow );
3889
3890         wxDataViewColumn *oldCurrentCol = m_currentCol;
3891
3892         // Update selection here...
3893         m_currentCol = col;
3894
3895         m_lastOnSame = !simulateClick && ((col == oldCurrentCol) &&
3896                         (current == oldCurrentRow)) && oldWasSelected;
3897
3898         // Call LeftClick after everything else as under GTK+
3899         if (cell->GetMode() & wxDATAVIEW_CELL_ACTIVATABLE)
3900         {
3901             // notify cell about click
3902             cell->PrepareForItem(model, item, col->GetModelColumn());
3903
3904             wxRect cell_rect( xpos + itemOffset,
3905                               GetLineStart( current ),
3906                               col->GetWidth() - itemOffset,
3907                               GetLineHeight( current ) );
3908
3909             // Report position relative to the cell's custom area, i.e.
3910             // no the entire space as given by the control but the one
3911             // used by the renderer after calculation of alignment etc.
3912
3913             // adjust the rectangle ourselves to account for the alignment
3914             wxRect rectItem = cell_rect;
3915             const int align = cell->GetAlignment();
3916             if ( align != wxDVR_DEFAULT_ALIGNMENT )
3917             {
3918                 const wxSize size = cell->GetSize();
3919
3920                 if ( size.x >= 0 && size.x < cell_rect.width )
3921                 {
3922                     if ( align & wxALIGN_CENTER_HORIZONTAL )
3923                         rectItem.x += (cell_rect.width - size.x)/2;
3924                     else if ( align & wxALIGN_RIGHT )
3925                         rectItem.x += cell_rect.width - size.x;
3926                     // else: wxALIGN_LEFT is the default
3927                 }
3928
3929                 if ( size.y >= 0 && size.y < cell_rect.height )
3930                 {
3931                     if ( align & wxALIGN_CENTER_VERTICAL )
3932                         rectItem.y += (cell_rect.height - size.y)/2;
3933                     else if ( align & wxALIGN_BOTTOM )
3934                         rectItem.y += cell_rect.height - size.y;
3935                     // else: wxALIGN_TOP is the default
3936                 }
3937             }
3938
3939             wxPoint pos( event.GetPosition() );
3940             pos.x -= rectItem.x;
3941             pos.y -= rectItem.y;
3942
3943             m_owner->CalcUnscrolledPosition( pos.x, pos.y, &pos.x, &pos.y );
3944
3945              /* ignore ret */ cell->WXOnLeftClick( pos, cell_rect,
3946                               model, item, col->GetModelColumn());
3947         }
3948     }
3949 }
3950
3951 void wxDataViewMainWindow::OnSetFocus( wxFocusEvent &event )
3952 {
3953     m_hasFocus = true;
3954
3955     if (HasCurrentRow())
3956         Refresh();
3957
3958     event.Skip();
3959 }
3960
3961 void wxDataViewMainWindow::OnKillFocus( wxFocusEvent &event )
3962 {
3963     m_hasFocus = false;
3964
3965     if (HasCurrentRow())
3966         Refresh();
3967
3968     event.Skip();
3969 }
3970
3971 //-----------------------------------------------------------------------------
3972 // wxDataViewCtrl
3973 //-----------------------------------------------------------------------------
3974
3975 WX_DEFINE_LIST(wxDataViewColumnList)
3976
3977 IMPLEMENT_DYNAMIC_CLASS(wxDataViewCtrl, wxDataViewCtrlBase)
3978 BEGIN_EVENT_TABLE(wxDataViewCtrl, wxDataViewCtrlBase)
3979     EVT_SIZE(wxDataViewCtrl::OnSize)
3980 END_EVENT_TABLE()
3981
3982 wxDataViewCtrl::~wxDataViewCtrl()
3983 {
3984     if (m_notifier)
3985         GetModel()->RemoveNotifier( m_notifier );
3986
3987     m_cols.Clear();
3988     m_colsBestWidths.clear();
3989 }
3990
3991 void wxDataViewCtrl::Init()
3992 {
3993     m_cols.DeleteContents(true);
3994     m_notifier = NULL;
3995
3996     // No sorting column at start
3997     m_sortingColumnIdx = wxNOT_FOUND;
3998
3999     m_headerArea = NULL;
4000
4001     m_colsDirty = false;
4002 }
4003
4004 bool wxDataViewCtrl::Create(wxWindow *parent,
4005                             wxWindowID id,
4006                             const wxPoint& pos,
4007                             const wxSize& size,
4008                             long style,
4009                             const wxValidator& validator,
4010                             const wxString& name)
4011 {
4012 //    if ( (style & wxBORDER_MASK) == 0)
4013 //        style |= wxBORDER_SUNKEN;
4014
4015     Init();
4016
4017     if (!wxControl::Create( parent, id, pos, size,
4018                             style | wxScrolledWindowStyle, validator, name))
4019         return false;
4020
4021     SetInitialSize(size);
4022
4023 #ifdef __WXMAC__
4024     MacSetClipChildren( true );
4025 #endif
4026
4027     m_clientArea = new wxDataViewMainWindow( this, wxID_ANY );
4028
4029     // We use the cursor keys for moving the selection, not scrolling, so call
4030     // this method to ensure wxScrollHelperEvtHandler doesn't catch all
4031     // keyboard events forwarded to us from wxListMainWindow.
4032     DisableKeyboardScrolling();
4033
4034     if (HasFlag(wxDV_NO_HEADER))
4035         m_headerArea = NULL;
4036     else
4037         m_headerArea = new wxDataViewHeaderWindow(this);
4038
4039     SetTargetWindow( m_clientArea );
4040
4041     wxBoxSizer *sizer = new wxBoxSizer( wxVERTICAL );
4042     if (m_headerArea)
4043         sizer->Add( m_headerArea, 0, wxGROW );
4044     sizer->Add( m_clientArea, 1, wxGROW );
4045     SetSizer( sizer );
4046
4047     return true;
4048 }
4049
4050 wxBorder wxDataViewCtrl::GetDefaultBorder() const
4051 {
4052     return wxBORDER_THEME;
4053 }
4054
4055 #ifdef __WXMSW__
4056 WXLRESULT wxDataViewCtrl::MSWWindowProc(WXUINT nMsg,
4057                                         WXWPARAM wParam,
4058                                         WXLPARAM lParam)
4059 {
4060     WXLRESULT rc = wxDataViewCtrlBase::MSWWindowProc(nMsg, wParam, lParam);
4061
4062 #ifndef __WXWINCE__
4063     // we need to process arrows ourselves for scrolling
4064     if ( nMsg == WM_GETDLGCODE )
4065     {
4066         rc |= DLGC_WANTARROWS;
4067     }
4068 #endif
4069
4070     return rc;
4071 }
4072 #endif
4073
4074 wxSize wxDataViewCtrl::GetSizeAvailableForScrollTarget(const wxSize& size)
4075 {
4076     wxSize newsize = size;
4077     if (!HasFlag(wxDV_NO_HEADER) && (m_headerArea))
4078     newsize.y -= m_headerArea->GetSize().y;
4079
4080     return newsize;
4081 }
4082
4083 void wxDataViewCtrl::OnSize( wxSizeEvent &WXUNUSED(event) )
4084 {
4085     // We need to override OnSize so that our scrolled
4086     // window a) does call Layout() to use sizers for
4087     // positioning the controls but b) does not query
4088     // the sizer for their size and use that for setting
4089     // the scrollable area as set that ourselves by
4090     // calling SetScrollbar() further down.
4091
4092     Layout();
4093
4094     AdjustScrollbars();
4095
4096     // We must redraw the headers if their height changed. Normally this
4097     // shouldn't happen as the control shouldn't let itself be resized beneath
4098     // its minimal height but avoid the display artefacts that appear if it
4099     // does happen, e.g. because there is really not enough vertical space.
4100     if ( !HasFlag(wxDV_NO_HEADER) && m_headerArea &&
4101             m_headerArea->GetSize().y <= m_headerArea->GetBestSize(). y )
4102     {
4103         m_headerArea->Refresh();
4104     }
4105 }
4106
4107 void wxDataViewCtrl::SetFocus()
4108 {
4109     if (m_clientArea)
4110         m_clientArea->SetFocus();
4111 }
4112
4113 bool wxDataViewCtrl::AssociateModel( wxDataViewModel *model )
4114 {
4115     if (!wxDataViewCtrlBase::AssociateModel( model ))
4116         return false;
4117
4118     m_notifier = new wxGenericDataViewModelNotifier( m_clientArea );
4119
4120     model->AddNotifier( m_notifier );
4121
4122     m_clientArea->DestroyTree();
4123
4124     m_clientArea->BuildTree(model);
4125
4126     m_clientArea->UpdateDisplay();
4127
4128     return true;
4129 }
4130
4131 #if wxUSE_DRAG_AND_DROP
4132
4133 bool wxDataViewCtrl::EnableDragSource( const wxDataFormat &format )
4134 {
4135     return m_clientArea->EnableDragSource( format );
4136 }
4137
4138 bool wxDataViewCtrl::EnableDropTarget( const wxDataFormat &format )
4139 {
4140     return m_clientArea->EnableDropTarget( format );
4141 }
4142
4143 #endif // wxUSE_DRAG_AND_DROP
4144
4145 bool wxDataViewCtrl::AppendColumn( wxDataViewColumn *col )
4146 {
4147     if (!wxDataViewCtrlBase::AppendColumn(col))
4148         return false;
4149
4150     m_cols.Append( col );
4151     m_colsBestWidths.push_back(0);
4152     OnColumnsCountChanged();
4153     return true;
4154 }
4155
4156 bool wxDataViewCtrl::PrependColumn( wxDataViewColumn *col )
4157 {
4158     if (!wxDataViewCtrlBase::PrependColumn(col))
4159         return false;
4160
4161     m_cols.Insert( col );
4162     m_colsBestWidths.insert(m_colsBestWidths.begin(), 0);
4163     OnColumnsCountChanged();
4164     return true;
4165 }
4166
4167 bool wxDataViewCtrl::InsertColumn( unsigned int pos, wxDataViewColumn *col )
4168 {
4169     if (!wxDataViewCtrlBase::InsertColumn(pos,col))
4170         return false;
4171
4172     m_cols.Insert( pos, col );
4173     m_colsBestWidths.insert(m_colsBestWidths.begin() + pos, 0);
4174     OnColumnsCountChanged();
4175     return true;
4176 }
4177
4178 void wxDataViewCtrl::OnColumnChange(unsigned int idx)
4179 {
4180     if ( m_headerArea )
4181         m_headerArea->UpdateColumn(idx);
4182
4183     m_clientArea->UpdateDisplay();
4184 }
4185
4186 void wxDataViewCtrl::OnColumnsCountChanged()
4187 {
4188     if (m_headerArea)
4189         m_headerArea->SetColumnCount(GetColumnCount());
4190
4191     m_clientArea->UpdateDisplay();
4192 }
4193
4194 void wxDataViewCtrl::DoSetExpanderColumn()
4195 {
4196     m_clientArea->UpdateDisplay();
4197 }
4198
4199 void wxDataViewCtrl::DoSetIndent()
4200 {
4201     m_clientArea->UpdateDisplay();
4202 }
4203
4204 unsigned int wxDataViewCtrl::GetColumnCount() const
4205 {
4206     return m_cols.GetCount();
4207 }
4208
4209 bool wxDataViewCtrl::SetRowHeight( int lineHeight )
4210 {
4211     if ( !m_clientArea )
4212         return false;
4213
4214     m_clientArea->SetRowHeight(lineHeight);
4215
4216     return true;
4217 }
4218
4219 wxDataViewColumn* wxDataViewCtrl::GetColumn( unsigned int idx ) const
4220 {
4221     return m_cols[idx];
4222 }
4223
4224 wxDataViewColumn *wxDataViewCtrl::GetColumnAt(unsigned int pos) const
4225 {
4226     // columns can't be reordered if there is no header window which allows
4227     // to do this
4228     const unsigned idx = m_headerArea ? m_headerArea->GetColumnsOrder()[pos]
4229                                     : pos;
4230
4231     return GetColumn(idx);
4232 }
4233
4234 int wxDataViewCtrl::GetColumnIndex(const wxDataViewColumn *column) const
4235 {
4236     const unsigned count = m_cols.size();
4237     for ( unsigned n = 0; n < count; n++ )
4238     {
4239         if ( m_cols[n] == column )
4240             return n;
4241     }
4242
4243     return wxNOT_FOUND;
4244 }
4245
4246 unsigned int wxDataViewCtrl::GetBestColumnWidth(int idx) const
4247 {
4248     if ( m_colsBestWidths[idx] != 0 )
4249         return m_colsBestWidths[idx];
4250
4251     const int count = m_clientArea->GetRowCount();
4252     wxDataViewColumn *column = GetColumn(idx);
4253     wxDataViewRenderer *renderer =
4254         const_cast<wxDataViewRenderer*>(column->GetRenderer());
4255
4256     class MaxWidthCalculator
4257     {
4258     public:
4259         MaxWidthCalculator(wxDataViewMainWindow *clientArea,
4260                            wxDataViewRenderer *renderer,
4261                            const wxDataViewModel *model,
4262                            unsigned column)
4263             : m_width(0),
4264               m_clientArea(clientArea),
4265               m_renderer(renderer),
4266               m_model(model),
4267               m_column(column)
4268         {
4269         }
4270
4271         void UpdateWithWidth(int width)
4272         {
4273             m_width = wxMax(m_width, width);
4274         }
4275
4276         void UpdateWithRow(int row)
4277         {
4278             wxDataViewItem item = m_clientArea->GetItemByRow(row);
4279             m_renderer->PrepareForItem(m_model, item, m_column);
4280             m_width = wxMax(m_width, m_renderer->GetSize().x);
4281         }
4282
4283         int GetMaxWidth() const { return m_width; }
4284
4285     private:
4286         int m_width;
4287         wxDataViewMainWindow *m_clientArea;
4288         wxDataViewRenderer *m_renderer;
4289         const wxDataViewModel *m_model;
4290         unsigned m_column;
4291     };
4292
4293     MaxWidthCalculator calculator(m_clientArea, renderer,
4294                                   GetModel(), column->GetModelColumn());
4295
4296     if ( m_headerArea )
4297     {
4298         int header_width = m_headerArea->GetTextExtent(column->GetTitle()).x;
4299         // Labels on native MSW header are indented on both sides
4300         header_width +=
4301             wxRendererNative::Get().GetHeaderButtonMargin(m_headerArea);
4302         calculator.UpdateWithWidth(header_width);
4303     }
4304
4305     // The code below deserves some explanation. For very large controls, we
4306     // simply can't afford to calculate sizes for all items, it takes too
4307     // long. So the best we can do is to check the first and the last N/2
4308     // items in the control for some sufficiently large N and calculate best
4309     // sizes from that. That can result in the calculated best width being too
4310     // small for some outliers, but it's better to get slightly imperfect
4311     // result than to wait several seconds after every update. To avoid highly
4312     // visible miscalculations, we also include all currently visible items
4313     // no matter what.  Finally, the value of N is determined dynamically by
4314     // measuring how much time we spent on the determining item widths so far.
4315
4316 #if wxUSE_STOPWATCH
4317     int top_part_end = count;
4318     static const long CALC_TIMEOUT = 20/*ms*/;
4319     // don't call wxStopWatch::Time() too often
4320     static const unsigned CALC_CHECK_FREQ = 100;
4321     wxStopWatch timer;
4322 #else
4323     // use some hard-coded limit, that's the best we can do without timer
4324     int top_part_end = wxMin(500, count);
4325 #endif // wxUSE_STOPWATCH/!wxUSE_STOPWATCH
4326
4327     int row = 0;
4328
4329     for ( row = 0; row < top_part_end; row++ )
4330     {
4331 #if wxUSE_STOPWATCH
4332         if ( row % CALC_CHECK_FREQ == CALC_CHECK_FREQ-1 &&
4333              timer.Time() > CALC_TIMEOUT )
4334             break;
4335 #endif // wxUSE_STOPWATCH
4336         calculator.UpdateWithRow(row);
4337     }
4338
4339     // row is the first unmeasured item now; that's our value of N/2
4340
4341     if ( row < count )
4342     {
4343         top_part_end = row;
4344
4345         // add bottom N/2 items now:
4346         const int bottom_part_start = wxMax(row, count - row);
4347         for ( row = bottom_part_start; row < count; row++ )
4348         {
4349             calculator.UpdateWithRow(row);
4350         }
4351
4352         // finally, include currently visible items in the calculation:
4353         const wxPoint origin = CalcUnscrolledPosition(wxPoint(0, 0));
4354         int first_visible = m_clientArea->GetLineAt(origin.y);
4355         int last_visible = m_clientArea->GetLineAt(origin.y + GetClientSize().y);
4356
4357         first_visible = wxMax(first_visible, top_part_end);
4358         last_visible = wxMin(bottom_part_start, last_visible);
4359
4360         for ( row = first_visible; row < last_visible; row++ )
4361         {
4362             calculator.UpdateWithRow(row);
4363         }
4364
4365         wxLogTrace("dataview",
4366                    "determined best size from %d top, %d bottom plus %d more visible items out of %d total",
4367                    top_part_end,
4368                    count - bottom_part_start,
4369                    wxMax(0, last_visible - first_visible),
4370                    count);
4371     }
4372
4373     int max_width = calculator.GetMaxWidth();
4374     if ( max_width > 0 )
4375         max_width += 2 * PADDING_RIGHTLEFT;
4376
4377     const_cast<wxDataViewCtrl*>(this)->m_colsBestWidths[idx] = max_width;
4378     return max_width;
4379 }
4380
4381 void wxDataViewCtrl::ColumnMoved(wxDataViewColumn * WXUNUSED(col),
4382                                 unsigned int WXUNUSED(new_pos))
4383 {
4384     // do _not_ reorder m_cols elements here, they should always be in the
4385     // order in which columns were added, we only display the columns in
4386     // different order
4387     m_clientArea->UpdateDisplay();
4388 }
4389
4390 bool wxDataViewCtrl::DeleteColumn( wxDataViewColumn *column )
4391 {
4392     wxDataViewColumnList::compatibility_iterator ret = m_cols.Find( column );
4393     if (!ret)
4394         return false;
4395
4396     m_colsBestWidths.erase(m_colsBestWidths.begin() + GetColumnIndex(column));
4397     m_cols.Erase(ret);
4398     OnColumnsCountChanged();
4399
4400     return true;
4401 }
4402
4403 bool wxDataViewCtrl::ClearColumns()
4404 {
4405     SetExpanderColumn(NULL);
4406     m_cols.Clear();
4407     m_colsBestWidths.clear();
4408     OnColumnsCountChanged();
4409     return true;
4410 }
4411
4412 void wxDataViewCtrl::InvalidateColBestWidth(int idx)
4413 {
4414     m_colsBestWidths[idx] = 0;
4415     m_colsDirty = true;
4416 }
4417
4418 void wxDataViewCtrl::InvalidateColBestWidths()
4419 {
4420     m_colsBestWidths.clear();
4421     m_colsBestWidths.resize(m_cols.size());
4422     m_colsDirty = true;
4423 }
4424
4425 void wxDataViewCtrl::UpdateColWidths()
4426 {
4427     if ( !m_headerArea )
4428         return;
4429
4430     const unsigned len = m_colsBestWidths.size();
4431     for ( unsigned i = 0; i < len; i++ )
4432     {
4433         if ( m_colsBestWidths[i] == 0 )
4434             m_headerArea->UpdateColumn(i);
4435     }
4436 }
4437
4438 void wxDataViewCtrl::OnInternalIdle()
4439 {
4440     wxDataViewCtrlBase::OnInternalIdle();
4441
4442     if ( m_colsDirty )
4443     {
4444         m_colsDirty = false;
4445         UpdateColWidths();
4446     }
4447 }
4448
4449 int wxDataViewCtrl::GetColumnPosition( const wxDataViewColumn *column ) const
4450 {
4451 #if 1
4452     unsigned int len = GetColumnCount();
4453     for ( unsigned int i = 0; i < len; i++ )
4454     {
4455         wxDataViewColumn * col = GetColumnAt(i);
4456         if (column==col)
4457             return i;
4458     }
4459
4460     return wxNOT_FOUND;
4461 #else
4462     // This returns the position in pixels which is not what we want.
4463     int ret = 0,
4464         dummy = 0;
4465     unsigned int len = GetColumnCount();
4466     for ( unsigned int i = 0; i < len; i++ )
4467     {
4468         wxDataViewColumn * col = GetColumnAt(i);
4469         if (col->IsHidden())
4470             continue;
4471         ret += col->GetWidth();
4472         if (column==col)
4473         {
4474             CalcScrolledPosition( ret, dummy, &ret, &dummy );
4475             break;
4476         }
4477     }
4478     return ret;
4479 #endif
4480 }
4481
4482 wxDataViewColumn *wxDataViewCtrl::GetSortingColumn() const
4483 {
4484     return m_sortingColumnIdx == wxNOT_FOUND ? NULL
4485                                             : GetColumn(m_sortingColumnIdx);
4486 }
4487
4488 wxDataViewItem wxDataViewCtrl::DoGetCurrentItem() const
4489 {
4490     return GetItemByRow(m_clientArea->GetCurrentRow());
4491 }
4492
4493 void wxDataViewCtrl::DoSetCurrentItem(const wxDataViewItem& item)
4494 {
4495     const int row = m_clientArea->GetRowByItem(item);
4496
4497     const unsigned oldCurrent = m_clientArea->GetCurrentRow();
4498     if ( static_cast<unsigned>(row) != oldCurrent )
4499     {
4500         m_clientArea->ChangeCurrentRow(row);
4501         m_clientArea->RefreshRow(oldCurrent);
4502         m_clientArea->RefreshRow(row);
4503     }
4504 }
4505
4506 int wxDataViewCtrl::GetSelectedItemsCount() const
4507 {
4508     return m_clientArea->GetSelections().size();
4509 }
4510
4511 int wxDataViewCtrl::GetSelections( wxDataViewItemArray & sel ) const
4512 {
4513     sel.Empty();
4514     const wxDataViewSelection& selections = m_clientArea->GetSelections();
4515
4516     const size_t len = selections.size();
4517     for ( size_t i = 0; i < len; i++ )
4518     {
4519         wxDataViewItem item = m_clientArea->GetItemByRow(selections[i]);
4520         if ( item.IsOk() )
4521         {
4522             sel.Add(item);
4523         }
4524         else
4525         {
4526             wxFAIL_MSG( "invalid item in selection - bad internal state" );
4527         }
4528     }
4529
4530     return sel.size();
4531 }
4532
4533 void wxDataViewCtrl::SetSelections( const wxDataViewItemArray & sel )
4534 {
4535     wxDataViewSelection selection(wxDataViewSelectionCmp);
4536
4537     wxDataViewItem last_parent;
4538
4539     int len = sel.GetCount();
4540     for( int i = 0; i < len; i ++ )
4541     {
4542         wxDataViewItem item = sel[i];
4543         wxDataViewItem parent = GetModel()->GetParent( item );
4544         if (parent)
4545         {
4546             if (parent != last_parent)
4547                 ExpandAncestors(item);
4548         }
4549
4550         last_parent = parent;
4551         int row = m_clientArea->GetRowByItem( item );
4552         if( row >= 0 )
4553             selection.Add( static_cast<unsigned int>(row) );
4554     }
4555
4556     m_clientArea->SetSelections( selection );
4557 }
4558
4559 void wxDataViewCtrl::Select( const wxDataViewItem & item )
4560 {
4561     ExpandAncestors( item );
4562
4563     int row = m_clientArea->GetRowByItem( item );
4564     if( row >= 0 )
4565     {
4566         // Unselect all rows before select another in the single select mode
4567         if (m_clientArea->IsSingleSel())
4568             m_clientArea->SelectAllRows(false);
4569
4570         m_clientArea->SelectRow(row, true);
4571
4572         // Also set focus to the selected item
4573         m_clientArea->ChangeCurrentRow( row );
4574     }
4575 }
4576
4577 void wxDataViewCtrl::Unselect( const wxDataViewItem & item )
4578 {
4579     int row = m_clientArea->GetRowByItem( item );
4580     if( row >= 0 )
4581         m_clientArea->SelectRow(row, false);
4582 }
4583
4584 bool wxDataViewCtrl::IsSelected( const wxDataViewItem & item ) const
4585 {
4586     int row = m_clientArea->GetRowByItem( item );
4587     if( row >= 0 )
4588     {
4589         return m_clientArea->IsRowSelected(row);
4590     }
4591     return false;
4592 }
4593
4594 void wxDataViewCtrl::SelectAll()
4595 {
4596     m_clientArea->SelectAllRows(true);
4597 }
4598
4599 void wxDataViewCtrl::UnselectAll()
4600 {
4601     m_clientArea->SelectAllRows(false);
4602 }
4603
4604 void wxDataViewCtrl::EnsureVisible( int row, int column )
4605 {
4606     if( row < 0 )
4607         row = 0;
4608     if( row > (int) m_clientArea->GetRowCount() )
4609         row = m_clientArea->GetRowCount();
4610
4611     int first = m_clientArea->GetFirstVisibleRow();
4612     int last = m_clientArea->GetLastVisibleRow();
4613     if( row < first )
4614         m_clientArea->ScrollTo( row, column );
4615     else if( row > last )
4616         m_clientArea->ScrollTo( row - last + first, column );
4617     else
4618         m_clientArea->ScrollTo( first, column );
4619 }
4620
4621 void wxDataViewCtrl::EnsureVisible( const wxDataViewItem & item, const wxDataViewColumn * column )
4622 {
4623     ExpandAncestors( item );
4624
4625     m_clientArea->RecalculateDisplay();
4626
4627     int row = m_clientArea->GetRowByItem(item);
4628     if( row >= 0 )
4629     {
4630         if( column == NULL )
4631             EnsureVisible(row, -1);
4632         else
4633             EnsureVisible( row, GetColumnIndex(column) );
4634     }
4635
4636 }
4637
4638 void wxDataViewCtrl::HitTest( const wxPoint & point, wxDataViewItem & item,
4639                               wxDataViewColumn* &column ) const
4640 {
4641     m_clientArea->HitTest(point, item, column);
4642 }
4643
4644 wxRect wxDataViewCtrl::GetItemRect( const wxDataViewItem & item,
4645                                     const wxDataViewColumn* column ) const
4646 {
4647     return m_clientArea->GetItemRect(item, column);
4648 }
4649
4650 wxDataViewItem wxDataViewCtrl::GetItemByRow( unsigned int row ) const
4651 {
4652     return m_clientArea->GetItemByRow( row );
4653 }
4654
4655 int wxDataViewCtrl::GetRowByItem( const wxDataViewItem & item ) const
4656 {
4657     return m_clientArea->GetRowByItem( item );
4658 }
4659
4660 void wxDataViewCtrl::Expand( const wxDataViewItem & item )
4661 {
4662     ExpandAncestors( item );
4663
4664     int row = m_clientArea->GetRowByItem( item );
4665     if (row != -1)
4666         m_clientArea->Expand(row);
4667 }
4668
4669 void wxDataViewCtrl::Collapse( const wxDataViewItem & item )
4670 {
4671     int row = m_clientArea->GetRowByItem( item );
4672     if (row != -1)
4673         m_clientArea->Collapse(row);
4674 }
4675
4676 bool wxDataViewCtrl::IsExpanded( const wxDataViewItem & item ) const
4677 {
4678     int row = m_clientArea->GetRowByItem( item );
4679     if (row != -1)
4680         return m_clientArea->IsExpanded(row);
4681     return false;
4682 }
4683
4684 void wxDataViewCtrl::StartEditor( const wxDataViewItem & item, unsigned int column )
4685 {
4686     wxDataViewColumn* col = GetColumn( column );
4687     if (!col)
4688         return;
4689
4690     wxDataViewRenderer* renderer = col->GetRenderer();
4691     if (renderer->GetMode() != wxDATAVIEW_CELL_EDITABLE)
4692         return;
4693
4694     const wxRect itemRect = GetItemRect(item, col);
4695     renderer->StartEditing(item, itemRect);
4696 }
4697
4698 #endif // !wxUSE_GENERICDATAVIEWCTRL
4699
4700 #endif // wxUSE_DATAVIEWCTRL