src/generic/treectlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        treectlg.cpp
   3 // Purpose:     generic tree control implementation
   4 // Author:      Robert Roebling
   5 // Created:     01/02/97
   6 // Modified:    22/10/98 - almost total rewrite, simpler interface (VZ)
   7 // Id:          $Id$
   8 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // =============================================================================
  13 // declarations
  14 // =============================================================================
  15
  16 // -----------------------------------------------------------------------------
  17 // headers
  18 // -----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21   #pragma implementation "treectlg.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_TREECTRL
  32
  33 #include "wx/treebase.h"
  34 #include "wx/generic/treectlg.h"
  35 #include "wx/timer.h"
  36 #include "wx/textctrl.h"
  37 #include "wx/imaglist.h"
  38 #include "wx/settings.h"
  39 #include "wx/dcclient.h"
  40
  41 // -----------------------------------------------------------------------------
  42 // array types
  43 // -----------------------------------------------------------------------------
  44
  45 class WXDLLEXPORT wxGenericTreeItem;
  46
  47 WX_DEFINE_EXPORTED_ARRAY(wxGenericTreeItem *, wxArrayGenericTreeItems);
  48 //WX_DEFINE_OBJARRAY(wxArrayTreeItemIds);
  49
  50 // ----------------------------------------------------------------------------
  51 // constants
  52 // ----------------------------------------------------------------------------
  53
  54 static const int NO_IMAGE = -1;
  55
  56 #define PIXELS_PER_UNIT 10
  57
  58 // ----------------------------------------------------------------------------
  59 // Aqua arrows
  60 // ----------------------------------------------------------------------------
  61
  62 /* XPM */
  63 static const char *aqua_arrow_right[] = {
  64 /* columns rows colors chars-per-pixel */
  65 "13 11 4 1",
  66 "  c None",
  67 "b c #C0C0C0",
  68 "c c #707070",
  69 "d c #A0A0A0",
  70 /* pixels */
  71 "    b        ",
  72 "    ddb      ",
  73 "    cccdb    ",
  74 "    cccccd   ",
  75 "    ccccccdb ",
  76 "    ccccccccd",
  77 "    ccccccdb ",
  78 "    cccccb   ",
  79 "    cccdb    ",
  80 "    ddb      ",
  81 "    b        "
  82 };
  83
  84 /* XPM */
  85 static const char *aqua_arrow_down[] = {
  86 /* columns rows colors chars-per-pixel */
  87 "13 11 4 1",
  88 "  c None",
  89 "b c #C0C0C0",
  90 "c c #707070",
  91 "d c #A0A0A0",
  92 /* pixels */
  93 "             ",
  94 "             ",
  95 " bdcccccccdb ",
  96 "  dcccccccd  ",
  97 "  bcccccccb  ",
  98 "   dcccccd   ",
  99 "   bcccccb   ",
 100 "    bcccd    ",
 101 "     dcd     ",
 102 "     bcb     ",
 103 "      d      "
 104 };
 105
 106 // -----------------------------------------------------------------------------
 107 // private classes
 108 // -----------------------------------------------------------------------------
 109
 110 // timer used for enabling in-place edit
 111 class WXDLLEXPORT wxTreeRenameTimer: public wxTimer
 112 {
 113 public:
 114     wxTreeRenameTimer( wxGenericTreeCtrl *owner );
 115
 116     void Notify();
 117
 118 private:
 119     wxGenericTreeCtrl   *m_owner;
 120 };
 121
 122 // control used for in-place edit
 123 class WXDLLEXPORT wxTreeTextCtrl: public wxTextCtrl
 124 {
 125 public:
 126     wxTreeTextCtrl( wxWindow *parent,
 127                     const wxWindowID id,
 128                     bool *accept,
 129                     wxString *res,
 130                     wxGenericTreeCtrl *owner,
 131                     const wxString &value = wxEmptyString,
 132                     const wxPoint &pos = wxDefaultPosition,
 133                     const wxSize &size = wxDefaultSize,
 134                     int style = wxSIMPLE_BORDER,
 135                     const wxValidator& validator = wxDefaultValidator,
 136                     const wxString &name = wxTextCtrlNameStr );
 137
 138     void OnChar( wxKeyEvent &event );
 139     void OnKeyUp( wxKeyEvent &event );
 140     void OnKillFocus( wxFocusEvent &event );
 141
 142 private:
 143     bool               *m_accept;
 144     wxString           *m_res;
 145     wxGenericTreeCtrl  *m_owner;
 146     wxString            m_startValue;
 147     bool                m_finished;
 148
 149     DECLARE_EVENT_TABLE()
 150 };
 151
 152 // a tree item
 153 class WXDLLEXPORT wxGenericTreeItem
 154 {
 155 public:
 156     // ctors & dtor
 157     wxGenericTreeItem() { m_data = NULL; }
 158     wxGenericTreeItem( wxGenericTreeItem *parent,
 159                        const wxString& text,
 160                        int image,
 161                        int selImage,
 162                        wxTreeItemData *data );
 163
 164     ~wxGenericTreeItem();
 165
 166     // trivial accessors
 167     wxArrayGenericTreeItems& GetChildren() { return m_children; }
 168
 169     const wxString& GetText() const { return m_text; }
 170     int GetImage(wxTreeItemIcon which = wxTreeItemIcon_Normal) const
 171         { return m_images[which]; }
 172     wxTreeItemData *GetData() const { return m_data; }
 173
 174     // returns the current image for the item (depending on its
 175     // selected/expanded/whatever state)
 176     int GetCurrentImage() const;
 177
 178     void SetText( const wxString &text );
 179     void SetImage(int image, wxTreeItemIcon which) { m_images[which] = image; }
 180     void SetData(wxTreeItemData *data) { m_data = data; }
 181
 182     void SetHasPlus(bool has = TRUE) { m_hasPlus = has; }
 183
 184     void SetBold(bool bold) { m_isBold = bold; }
 185
 186     int GetX() const { return m_x; }
 187     int GetY() const { return m_y; }
 188
 189     void SetX(int x) { m_x = x; }
 190     void SetY(int y) { m_y = y; }
 191
 192     int  GetHeight() const { return m_height; }
 193     int  GetWidth()  const { return m_width; }
 194
 195     void SetHeight(int h) { m_height = h; }
 196     void SetWidth(int w) { m_width = w; }
 197
 198     wxGenericTreeItem *GetParent() const { return m_parent; }
 199
 200     // operations
 201         // deletes all children notifying the treectrl about it if !NULL
 202         // pointer given
 203     void DeleteChildren(wxGenericTreeCtrl *tree = NULL);
 204
 205     // get count of all children (and grand children if 'recursively')
 206     size_t GetChildrenCount(bool recursively = TRUE) const;
 207
 208     void Insert(wxGenericTreeItem *child, size_t index)
 209     { m_children.Insert(child, index); }
 210
 211     void GetSize( int &x, int &y, const wxGenericTreeCtrl* );
 212
 213         // return the item at given position (or NULL if no item), onButton is
 214         // TRUE if the point belongs to the item's button, otherwise it lies
 215         // on the button's label
 216     wxGenericTreeItem *HitTest( const wxPoint& point,
 217                                 const wxGenericTreeCtrl *,
 218                                 int &flags,
 219                                 int level );
 220
 221     void Expand() { m_isCollapsed = FALSE; }
 222     void Collapse() { m_isCollapsed = TRUE; }
 223
 224     void SetHilight( bool set = TRUE ) { m_hasHilight = set; }
 225
 226     // status inquiries
 227     bool HasChildren() const { return !m_children.IsEmpty(); }
 228     bool IsSelected()  const { return m_hasHilight != 0; }
 229     bool IsExpanded()  const { return !m_isCollapsed; }
 230     bool HasPlus()     const { return m_hasPlus || HasChildren(); }
 231     bool IsBold()      const { return m_isBold != 0; }
 232
 233     // attributes
 234         // get them - may be NULL
 235     wxTreeItemAttr *GetAttributes() const { return m_attr; }
 236         // get them ensuring that the pointer is not NULL
 237     wxTreeItemAttr& Attr()
 238     {
 239         if ( !m_attr )
 240         {
 241             m_attr = new wxTreeItemAttr;
 242             m_ownsAttr = TRUE;
 243         }
 244         return *m_attr;
 245     }
 246         // set them
 247     void SetAttributes(wxTreeItemAttr *attr)
 248     {
 249         if ( m_ownsAttr ) delete m_attr;
 250         m_attr = attr;
 251         m_ownsAttr = FALSE;
 252     }
 253         // set them and delete when done
 254     void AssignAttributes(wxTreeItemAttr *attr)
 255     {
 256         SetAttributes(attr);
 257         m_ownsAttr = TRUE;
 258     }
 259
 260 private:
 261     // since there can be very many of these, we save size by chosing
 262     // the smallest representation for the elements and by ordering
 263     // the members to avoid padding.
 264     wxString            m_text;         // label to be rendered for item
 265
 266     wxTreeItemData     *m_data;         // user-provided data
 267
 268     wxArrayGenericTreeItems m_children; // list of children
 269     wxGenericTreeItem  *m_parent;       // parent of this item
 270
 271     wxTreeItemAttr     *m_attr;         // attributes???
 272
 273     // tree ctrl images for the normal, selected, expanded and
 274     // expanded+selected states
 275     short               m_images[wxTreeItemIcon_Max];
 276
 277     wxCoord             m_x;            // (virtual) offset from top
 278     short               m_y;            // (virtual) offset from left
 279     short               m_width;        // width of this item
 280     unsigned char       m_height;       // height of this item
 281
 282     // use bitfields to save size
 283     int                 m_isCollapsed :1;
 284     int                 m_hasHilight  :1; // same as focused
 285     int                 m_hasPlus     :1; // used for item which doesn't have
 286                                           // children but has a [+] button
 287     int                 m_isBold      :1; // render the label in bold font
 288     int                 m_ownsAttr    :1; // delete attribute when done
 289 };
 290
 291 // =============================================================================
 292 // implementation
 293 // =============================================================================
 294
 295 // ----------------------------------------------------------------------------
 296 // private functions
 297 // ----------------------------------------------------------------------------
 298
 299 // translate the key or mouse event flags to the type of selection we're
 300 // dealing with
 301 static void EventFlagsToSelType(long style,
 302                                 bool shiftDown,
 303                                 bool ctrlDown,
 304                                 bool &is_multiple,
 305                                 bool &extended_select,
 306                                 bool &unselect_others)
 307 {
 308     is_multiple = (style & wxTR_MULTIPLE) != 0;
 309     extended_select = shiftDown && is_multiple;
 310     unselect_others = !(extended_select || (ctrlDown && is_multiple));
 311 }
 312
 313 // -----------------------------------------------------------------------------
 314 // wxTreeRenameTimer (internal)
 315 // -----------------------------------------------------------------------------
 316
 317 wxTreeRenameTimer::wxTreeRenameTimer( wxGenericTreeCtrl *owner )
 318 {
 319     m_owner = owner;
 320 }
 321
 322 void wxTreeRenameTimer::Notify()
 323 {
 324     m_owner->OnRenameTimer();
 325 }
 326
 327 //-----------------------------------------------------------------------------
 328 // wxTreeTextCtrl (internal)
 329 //-----------------------------------------------------------------------------
 330
 331 BEGIN_EVENT_TABLE(wxTreeTextCtrl,wxTextCtrl)
 332     EVT_CHAR           (wxTreeTextCtrl::OnChar)
 333     EVT_KEY_UP         (wxTreeTextCtrl::OnKeyUp)
 334     EVT_KILL_FOCUS     (wxTreeTextCtrl::OnKillFocus)
 335 END_EVENT_TABLE()
 336
 337 wxTreeTextCtrl::wxTreeTextCtrl( wxWindow *parent,
 338                                 const wxWindowID id,
 339                                 bool *accept,
 340                                 wxString *res,
 341                                 wxGenericTreeCtrl *owner,
 342                                 const wxString &value,
 343                                 const wxPoint &pos,
 344                                 const wxSize &size,
 345                                 int style,
 346                                 const wxValidator& validator,
 347                                 const wxString &name )
 348     : wxTextCtrl( parent, id, value, pos, size, style, validator, name )
 349 {
 350     m_res = res;
 351     m_accept = accept;
 352     m_owner = owner;
 353     (*m_accept) = FALSE;
 354     (*m_res) = wxEmptyString;
 355     m_startValue = value;
 356     m_finished = FALSE;
 357 }
 358
 359 void wxTreeTextCtrl::OnChar( wxKeyEvent &event )
 360 {
 361     if (event.m_keyCode == WXK_RETURN)
 362     {
 363         (*m_accept) = TRUE;
 364         (*m_res) = GetValue();
 365
 366         if ((*m_res) != m_startValue)
 367             m_owner->OnRenameAccept();
 368
 369         if (!wxPendingDelete.Member(this))
 370             wxPendingDelete.Append(this);
 371
 372         m_finished = TRUE;
 373         m_owner->SetFocus(); // This doesn't work. TODO.
 374
 375         return;
 376     }
 377     if (event.m_keyCode == WXK_ESCAPE)
 378     {
 379         (*m_accept) = FALSE;
 380         (*m_res) = "";
 381
 382         if (!wxPendingDelete.Member(this))
 383             wxPendingDelete.Append(this);
 384
 385         m_finished = TRUE;
 386         m_owner->SetFocus(); // This doesn't work. TODO.
 387
 388         return;
 389     }
 390     event.Skip();
 391 }
 392
 393 void wxTreeTextCtrl::OnKeyUp( wxKeyEvent &event )
 394 {
 395     if (m_finished)
 396     {
 397         event.Skip();
 398         return;
 399     }
 400
 401     // auto-grow the textctrl:
 402     wxSize parentSize = m_owner->GetSize();
 403     wxPoint myPos = GetPosition();
 404     wxSize mySize = GetSize();
 405     int sx, sy;
 406     GetTextExtent(GetValue() + _T("M"), &sx, &sy);
 407     if (myPos.x + sx > parentSize.x) sx = parentSize.x - myPos.x;
 408     if (mySize.x > sx) sx = mySize.x;
 409     SetSize(sx, -1);
 410
 411     event.Skip();
 412 }
 413
 414 void wxTreeTextCtrl::OnKillFocus( wxFocusEvent &event )
 415 {
 416     if (m_finished)
 417     {
 418         event.Skip();
 419         return;
 420     }
 421
 422     if (!wxPendingDelete.Member(this))
 423         wxPendingDelete.Append(this);
 424
 425     (*m_accept) = TRUE;
 426     (*m_res) = GetValue();
 427
 428     if ((*m_res) != m_startValue)
 429         m_owner->OnRenameAccept();
 430 }
 431
 432 // -----------------------------------------------------------------------------
 433 // wxGenericTreeItem
 434 // -----------------------------------------------------------------------------
 435
 436 wxGenericTreeItem::wxGenericTreeItem(wxGenericTreeItem *parent,
 437                                      const wxString& text,
 438                                      int image, int selImage,
 439                                      wxTreeItemData *data)
 440                  : m_text(text)
 441 {
 442     m_images[wxTreeItemIcon_Normal] = image;
 443     m_images[wxTreeItemIcon_Selected] = selImage;
 444     m_images[wxTreeItemIcon_Expanded] = NO_IMAGE;
 445     m_images[wxTreeItemIcon_SelectedExpanded] = NO_IMAGE;
 446
 447     m_data = data;
 448     m_x = m_y = 0;
 449
 450     m_isCollapsed = TRUE;
 451     m_hasHilight = FALSE;
 452     m_hasPlus = FALSE;
 453     m_isBold = FALSE;
 454
 455     m_parent = parent;
 456
 457     m_attr = (wxTreeItemAttr *)NULL;
 458     m_ownsAttr = FALSE;
 459
 460     // We don't know the height here yet.
 461     m_width = 0;
 462     m_height = 0;
 463 }
 464
 465 wxGenericTreeItem::~wxGenericTreeItem()
 466 {
 467     delete m_data;
 468
 469     if (m_ownsAttr) delete m_attr;
 470
 471     wxASSERT_MSG( m_children.IsEmpty(),
 472                   wxT("please call DeleteChildren() before deleting the item") );
 473 }
 474
 475 void wxGenericTreeItem::DeleteChildren(wxGenericTreeCtrl *tree)
 476 {
 477     size_t count = m_children.Count();
 478     for ( size_t n = 0; n < count; n++ )
 479     {
 480         wxGenericTreeItem *child = m_children[n];
 481         if (tree)
 482             tree->SendDeleteEvent(child);
 483
 484         child->DeleteChildren(tree);
 485         delete child;
 486     }
 487
 488     m_children.Empty();
 489 }
 490
 491 void wxGenericTreeItem::SetText( const wxString &text )
 492 {
 493     m_text = text;
 494 }
 495
 496 size_t wxGenericTreeItem::GetChildrenCount(bool recursively) const
 497 {
 498     size_t count = m_children.Count();
 499     if ( !recursively )
 500         return count;
 501
 502     size_t total = count;
 503     for (size_t n = 0; n < count; ++n)
 504     {
 505         total += m_children[n]->GetChildrenCount();
 506     }
 507
 508     return total;
 509 }
 510
 511 void wxGenericTreeItem::GetSize( int &x, int &y,
 512                                  const wxGenericTreeCtrl *theButton )
 513 {
 514     int bottomY=m_y+theButton->GetLineHeight(this);
 515     if ( y < bottomY ) y = bottomY;
 516     int width = m_x +  m_width;
 517     if ( x < width ) x = width;
 518
 519     if (IsExpanded())
 520     {
 521         size_t count = m_children.Count();
 522         for ( size_t n = 0; n < count; ++n )
 523         {
 524             m_children[n]->GetSize( x, y, theButton );
 525         }
 526     }
 527 }
 528
 529 wxGenericTreeItem *wxGenericTreeItem::HitTest(const wxPoint& point,
 530                                               const wxGenericTreeCtrl *theCtrl,
 531                                               int &flags,
 532                                               int level)
 533 {
 534     // for a hidden root node, don't evaluate it, but do evaluate children
 535     if ( !(level == 0 && theCtrl->HasFlag(wxTR_HIDE_ROOT)) )
 536     {
 537         // evaluate the item
 538         int h = theCtrl->GetLineHeight(this);
 539         if ((point.y > m_y) && (point.y < m_y + h))
 540         {
 541             int y_mid = m_y + h/2;
 542             if (point.y < y_mid )
 543                 flags |= wxTREE_HITTEST_ONITEMUPPERPART;
 544             else
 545                 flags |= wxTREE_HITTEST_ONITEMLOWERPART;
 546
 547             // 5 is the size of the plus sign
 548             int xCross = m_x - theCtrl->GetSpacing();
 549             if ((point.x > xCross-5) && (point.x < xCross+5) &&
 550                 (point.y > y_mid-5) && (point.y < y_mid+5) &&
 551                 HasPlus() && theCtrl->HasButtons() )
 552             {
 553                 flags |= wxTREE_HITTEST_ONITEMBUTTON;
 554                 return this;
 555             }
 556
 557             if ((point.x >= m_x) && (point.x <= m_x+m_width))
 558             {
 559                 int image_w = -1;
 560                 int image_h;
 561
 562                 // assuming every image (normal and selected) has the same size!
 563                 if ( (GetImage() != NO_IMAGE) && theCtrl->m_imageListNormal )
 564                     theCtrl->m_imageListNormal->GetSize(GetImage(),
 565                                                         image_w, image_h);
 566
 567                 if ((image_w != -1) && (point.x <= m_x + image_w + 1))
 568                     flags |= wxTREE_HITTEST_ONITEMICON;
 569                 else
 570                     flags |= wxTREE_HITTEST_ONITEMLABEL;
 571
 572                 return this;
 573             }
 574
 575             if (point.x < m_x)
 576                 flags |= wxTREE_HITTEST_ONITEMINDENT;
 577             if (point.x > m_x+m_width)
 578                 flags |= wxTREE_HITTEST_ONITEMRIGHT;
 579
 580             return this;
 581         }
 582
 583         // if children are expanded, fall through to evaluate them
 584         if (m_isCollapsed) return (wxGenericTreeItem*) NULL;
 585     }
 586
 587     // evaluate children
 588     size_t count = m_children.Count();
 589     for ( size_t n = 0; n < count; n++ )
 590     {
 591         wxGenericTreeItem *res = m_children[n]->HitTest( point,
 592                                                          theCtrl,
 593                                                          flags,
 594                                                          level + 1 );
 595         if ( res != NULL )
 596             return res;
 597     }
 598
 599     return (wxGenericTreeItem*) NULL;
 600 }
 601
 602 int wxGenericTreeItem::GetCurrentImage() const
 603 {
 604     int image = NO_IMAGE;
 605     if ( IsExpanded() )
 606     {
 607         if ( IsSelected() )
 608         {
 609             image = GetImage(wxTreeItemIcon_SelectedExpanded);
 610         }
 611
 612         if ( image == NO_IMAGE )
 613         {
 614             // we usually fall back to the normal item, but try just the
 615             // expanded one (and not selected) first in this case
 616             image = GetImage(wxTreeItemIcon_Expanded);
 617         }
 618     }
 619     else // not expanded
 620     {
 621         if ( IsSelected() )
 622             image = GetImage(wxTreeItemIcon_Selected);
 623     }
 624
 625     // maybe it doesn't have the specific image we want,
 626     // try the default one instead
 627     if ( image == NO_IMAGE ) image = GetImage();
 628
 629     return image;
 630 }
 631
 632 // -----------------------------------------------------------------------------
 633 // wxGenericTreeCtrl implementation
 634 // -----------------------------------------------------------------------------
 635
 636 IMPLEMENT_DYNAMIC_CLASS(wxGenericTreeCtrl, wxScrolledWindow)
 637
 638 BEGIN_EVENT_TABLE(wxGenericTreeCtrl,wxScrolledWindow)
 639     EVT_PAINT          (wxGenericTreeCtrl::OnPaint)
 640     EVT_MOUSE_EVENTS   (wxGenericTreeCtrl::OnMouse)
 641     EVT_CHAR           (wxGenericTreeCtrl::OnChar)
 642     EVT_SET_FOCUS      (wxGenericTreeCtrl::OnSetFocus)
 643     EVT_KILL_FOCUS     (wxGenericTreeCtrl::OnKillFocus)
 644     EVT_IDLE           (wxGenericTreeCtrl::OnIdle)
 645 END_EVENT_TABLE()
 646
 647 #if !defined(__WXMSW__) || defined(__WIN16__) || defined(__WXUNIVERSAL__)
 648 /*
 649  * wxTreeCtrl has to be a real class or we have problems with
 650  * the run-time information.
 651  */
 652
 653 IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxGenericTreeCtrl)
 654 #endif
 655
 656 // -----------------------------------------------------------------------------
 657 // construction/destruction
 658 // -----------------------------------------------------------------------------
 659
 660 void wxGenericTreeCtrl::Init()
 661 {
 662     m_current = m_key_current = m_anchor = (wxGenericTreeItem *) NULL;
 663     m_hasFocus = FALSE;
 664     m_dirty = FALSE;
 665
 666     m_lineHeight = 10;
 667     m_indent = 15;
 668     m_spacing = 18;
 669
 670     m_hilightBrush = new wxBrush
 671                          (
 672                             wxSystemSettings::GetColour
 673                             (
 674                                 wxSYS_COLOUR_HIGHLIGHT
 675                             ),
 676                             wxSOLID
 677                          );
 678
 679     m_hilightUnfocusedBrush = new wxBrush
 680                               (
 681                                  wxSystemSettings::GetColour
 682                                  (
 683                                      wxSYS_COLOUR_BTNSHADOW
 684                                  ),
 685                                  wxSOLID
 686                               );
 687
 688     m_imageListNormal = m_imageListButtons =
 689     m_imageListState = (wxImageList *) NULL;
 690     m_ownsImageListNormal = m_ownsImageListButtons =
 691     m_ownsImageListState = FALSE;
 692
 693     m_dragCount = 0;
 694     m_isDragging = FALSE;
 695     m_dropTarget = m_oldSelection = (wxGenericTreeItem *)NULL;
 696
 697     m_renameTimer = new wxTreeRenameTimer( this );
 698     m_lastOnSame = FALSE;
 699
 700     m_normalFont = wxSystemSettings::GetFont( wxSYS_DEFAULT_GUI_FONT );
 701     m_boldFont = wxFont( m_normalFont.GetPointSize(),
 702                          m_normalFont.GetFamily(),
 703                          m_normalFont.GetStyle(),
 704                          wxBOLD,
 705                          m_normalFont.GetUnderlined());
 706 }
 707
 708 bool wxGenericTreeCtrl::Create(wxWindow *parent,
 709                                wxWindowID id,
 710                                const wxPoint& pos,
 711                                const wxSize& size,
 712                                long style,
 713                                const wxValidator &validator,
 714                                const wxString& name )
 715 {
 716 #ifdef __WXMAC__
 717     int major,minor;
 718     wxGetOsVersion( &major, &minor );
 719
 720     if (style & wxTR_HAS_BUTTONS) style |= wxTR_MAC_BUTTONS;
 721     if (style & wxTR_HAS_BUTTONS) style &= ~wxTR_HAS_BUTTONS;
 722     style &= ~wxTR_LINES_AT_ROOT;
 723     style |= wxTR_NO_LINES;
 724     if (major < 10)
 725         style |= wxTR_ROW_LINES;
 726     if (major >= 10)
 727         style |= wxTR_AQUA_BUTTONS;
 728 #endif
 729
 730     if (style & wxTR_AQUA_BUTTONS)
 731     {
 732         m_arrowRight = new wxBitmap( aqua_arrow_right );
 733         m_arrowDown = new wxBitmap( aqua_arrow_down );
 734     }
 735     else
 736     {
 737         m_arrowRight = NULL;
 738         m_arrowDown = NULL;
 739     }
 740
 741     wxScrolledWindow::Create( parent, id, pos, size,
 742                               style|wxHSCROLL|wxVSCROLL, name );
 743
 744     // If the tree display has no buttons, but does have
 745     // connecting lines, we can use a narrower layout.
 746     // It may not be a good idea to force this...
 747     if (!HasButtons() && !HasFlag(wxTR_NO_LINES))
 748     {
 749         m_indent= 10;
 750         m_spacing = 10;
 751     }
 752
 753 #if wxUSE_VALIDATORS
 754     SetValidator( validator );
 755 #endif
 756
 757     SetForegroundColour( wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT) );
 758     SetBackgroundColour( wxSystemSettings::GetColour(wxSYS_COLOUR_LISTBOX) );
 759
 760 //  m_dottedPen = wxPen( "grey", 0, wxDOT );  too slow under XFree86
 761     m_dottedPen = wxPen( wxT("grey"), 0, 0 );
 762
 763     return TRUE;
 764 }
 765
 766 wxGenericTreeCtrl::~wxGenericTreeCtrl()
 767 {
 768     delete m_hilightBrush;
 769     delete m_hilightUnfocusedBrush;
 770
 771     if (m_arrowRight) delete m_arrowRight;
 772     if (m_arrowDown) delete m_arrowDown;
 773
 774     DeleteAllItems();
 775
 776     delete m_renameTimer;
 777     if (m_ownsImageListNormal) delete m_imageListNormal;
 778     if (m_ownsImageListState) delete m_imageListState;
 779     if (m_ownsImageListButtons) delete m_imageListButtons;
 780 }
 781
 782 // -----------------------------------------------------------------------------
 783 // accessors
 784 // -----------------------------------------------------------------------------
 785
 786 size_t wxGenericTreeCtrl::GetCount() const
 787 {
 788     return m_anchor == NULL ? 0u : m_anchor->GetChildrenCount();
 789 }
 790
 791 void wxGenericTreeCtrl::SetIndent(unsigned int indent)
 792 {
 793     m_indent = (unsigned short) indent;
 794     m_dirty = TRUE;
 795 }
 796
 797 void wxGenericTreeCtrl::SetSpacing(unsigned int spacing)
 798 {
 799     m_spacing = (unsigned short) spacing;
 800     m_dirty = TRUE;
 801 }
 802
 803 size_t wxGenericTreeCtrl::GetChildrenCount(const wxTreeItemId& item, bool recursively)
 804 {
 805     wxCHECK_MSG( item.IsOk(), 0u, wxT("invalid tree item") );
 806
 807     return ((wxGenericTreeItem*) item.m_pItem)->GetChildrenCount(recursively);
 808 }
 809
 810 void wxGenericTreeCtrl::SetWindowStyle(const long styles)
 811 {
 812         // right now, just sets the styles.  Eventually, we may
 813         // want to update the inherited styles, but right now
 814         // none of the parents has updatable styles
 815     m_windowStyle = styles;
 816     m_dirty = TRUE;
 817 }
 818
 819 // -----------------------------------------------------------------------------
 820 // functions to work with tree items
 821 // -----------------------------------------------------------------------------
 822
 823 wxString wxGenericTreeCtrl::GetItemText(const wxTreeItemId& item) const
 824 {
 825     wxCHECK_MSG( item.IsOk(), wxT(""), wxT("invalid tree item") );
 826
 827     return ((wxGenericTreeItem*) item.m_pItem)->GetText();
 828 }
 829
 830 int wxGenericTreeCtrl::GetItemImage(const wxTreeItemId& item,
 831                              wxTreeItemIcon which) const
 832 {
 833     wxCHECK_MSG( item.IsOk(), -1, wxT("invalid tree item") );
 834
 835     return ((wxGenericTreeItem*) item.m_pItem)->GetImage(which);
 836 }
 837
 838 wxTreeItemData *wxGenericTreeCtrl::GetItemData(const wxTreeItemId& item) const
 839 {
 840     wxCHECK_MSG( item.IsOk(), NULL, wxT("invalid tree item") );
 841
 842     return ((wxGenericTreeItem*) item.m_pItem)->GetData();
 843 }
 844
 845 void wxGenericTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
 846 {
 847     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 848
 849     wxClientDC dc(this);
 850     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 851     pItem->SetText(text);
 852     CalculateSize(pItem, dc);
 853     RefreshLine(pItem);
 854 }
 855
 856 void wxGenericTreeCtrl::SetItemImage(const wxTreeItemId& item,
 857                               int image,
 858                               wxTreeItemIcon which)
 859 {
 860     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 861
 862     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 863     pItem->SetImage(image, which);
 864
 865     wxClientDC dc(this);
 866     CalculateSize(pItem, dc);
 867     RefreshLine(pItem);
 868 }
 869
 870 void wxGenericTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)
 871 {
 872     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 873
 874     ((wxGenericTreeItem*) item.m_pItem)->SetData(data);
 875 }
 876
 877 void wxGenericTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
 878 {
 879     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 880
 881     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 882     pItem->SetHasPlus(has);
 883     RefreshLine(pItem);
 884 }
 885
 886 void wxGenericTreeCtrl::SetItemBold(const wxTreeItemId& item, bool bold)
 887 {
 888     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 889
 890     // avoid redrawing the tree if no real change
 891     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 892     if ( pItem->IsBold() != bold )
 893     {
 894         pItem->SetBold(bold);
 895         RefreshLine(pItem);
 896     }
 897 }
 898
 899 void wxGenericTreeCtrl::SetItemTextColour(const wxTreeItemId& item,
 900                                    const wxColour& col)
 901 {
 902     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 903
 904     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 905     pItem->Attr().SetTextColour(col);
 906     RefreshLine(pItem);
 907 }
 908
 909 void wxGenericTreeCtrl::SetItemBackgroundColour(const wxTreeItemId& item,
 910                                          const wxColour& col)
 911 {
 912     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 913
 914     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 915     pItem->Attr().SetBackgroundColour(col);
 916     RefreshLine(pItem);
 917 }
 918
 919 void wxGenericTreeCtrl::SetItemFont(const wxTreeItemId& item, const wxFont& font)
 920 {
 921     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 922
 923     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 924     pItem->Attr().SetFont(font);
 925     RefreshLine(pItem);
 926 }
 927
 928 bool wxGenericTreeCtrl::SetFont( const wxFont &font )
 929 {
 930     wxScrolledWindow::SetFont(font);
 931
 932     m_normalFont = font ;
 933     m_boldFont = wxFont( m_normalFont.GetPointSize(),
 934                             m_normalFont.GetFamily(),
 935                             m_normalFont.GetStyle(),
 936                             wxBOLD,
 937                             m_normalFont.GetUnderlined());
 938
 939     return TRUE;
 940 }
 941
 942
 943 // -----------------------------------------------------------------------------
 944 // item status inquiries
 945 // -----------------------------------------------------------------------------
 946
 947 bool wxGenericTreeCtrl::IsVisible(const wxTreeItemId& item) const
 948 {
 949     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
 950
 951     // An item is only visible if it's not a descendant of a collapsed item
 952     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 953     wxGenericTreeItem* parent = pItem->GetParent();
 954     while (parent)
 955     {
 956         if (!parent->IsExpanded())
 957             return FALSE;
 958         parent = parent->GetParent();
 959     }
 960
 961     int startX, startY;
 962     GetViewStart(& startX, & startY);
 963
 964     wxSize clientSize = GetClientSize();
 965
 966     wxRect rect;
 967     if (!GetBoundingRect(item, rect))
 968         return FALSE;
 969     if (rect.GetWidth() == 0 || rect.GetHeight() == 0)
 970         return FALSE;
 971     if (rect.GetBottom() < 0 || rect.GetTop() > clientSize.y)
 972         return FALSE;
 973     if (rect.GetRight() < 0 || rect.GetLeft() > clientSize.x)
 974         return FALSE;
 975
 976     return TRUE;
 977 }
 978
 979 bool wxGenericTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
 980 {
 981     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
 982
 983     // consider that the item does have children if it has the "+" button: it
 984     // might not have them (if it had never been expanded yet) but then it
 985     // could have them as well and it's better to err on this side rather than
 986     // disabling some operations which are restricted to the items with
 987     // children for an item which does have them
 988     return ((wxGenericTreeItem*) item.m_pItem)->HasPlus();
 989 }
 990
 991 bool wxGenericTreeCtrl::IsExpanded(const wxTreeItemId& item) const
 992 {
 993     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
 994
 995     return ((wxGenericTreeItem*) item.m_pItem)->IsExpanded();
 996 }
 997
 998 bool wxGenericTreeCtrl::IsSelected(const wxTreeItemId& item) const
 999 {
1000     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
1001
1002     return ((wxGenericTreeItem*) item.m_pItem)->IsSelected();
1003 }
1004
1005 bool wxGenericTreeCtrl::IsBold(const wxTreeItemId& item) const
1006 {
1007     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
1008
1009     return ((wxGenericTreeItem*) item.m_pItem)->IsBold();
1010 }
1011
1012 // -----------------------------------------------------------------------------
1013 // navigation
1014 // -----------------------------------------------------------------------------
1015
1016 wxTreeItemId wxGenericTreeCtrl::GetParent(const wxTreeItemId& item) const
1017 {
1018     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1019
1020     return ((wxGenericTreeItem*) item.m_pItem)->GetParent();
1021 }
1022
1023 wxTreeItemId wxGenericTreeCtrl::GetFirstChild(const wxTreeItemId& item, long& cookie) const
1024 {
1025     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1026
1027     cookie = 0;
1028     return GetNextChild(item, cookie);
1029 }
1030
1031 wxTreeItemId wxGenericTreeCtrl::GetNextChild(const wxTreeItemId& item, long& cookie) const
1032 {
1033     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1034
1035     wxArrayGenericTreeItems& children = ((wxGenericTreeItem*) item.m_pItem)->GetChildren();
1036     if ( (size_t)cookie < children.Count() )
1037     {
1038         return children.Item((size_t)cookie++);
1039     }
1040     else
1041     {
1042         // there are no more of them
1043         return wxTreeItemId();
1044     }
1045 }
1046
1047 wxTreeItemId wxGenericTreeCtrl::GetLastChild(const wxTreeItemId& item) const
1048 {
1049     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1050
1051     wxArrayGenericTreeItems& children = ((wxGenericTreeItem*) item.m_pItem)->GetChildren();
1052     return (children.IsEmpty() ? wxTreeItemId() : wxTreeItemId(children.Last()));
1053 }
1054
1055 wxTreeItemId wxGenericTreeCtrl::GetNextSibling(const wxTreeItemId& item) const
1056 {
1057     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1058
1059     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
1060     wxGenericTreeItem *parent = i->GetParent();
1061     if ( parent == NULL )
1062     {
1063         // root item doesn't have any siblings
1064         return wxTreeItemId();
1065     }
1066
1067     wxArrayGenericTreeItems& siblings = parent->GetChildren();
1068     int index = siblings.Index(i);
1069     wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
1070
1071     size_t n = (size_t)(index + 1);
1072     return n == siblings.Count() ? wxTreeItemId() : wxTreeItemId(siblings[n]);
1073 }
1074
1075 wxTreeItemId wxGenericTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const
1076 {
1077     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1078
1079     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
1080     wxGenericTreeItem *parent = i->GetParent();
1081     if ( parent == NULL )
1082     {
1083         // root item doesn't have any siblings
1084         return wxTreeItemId();
1085     }
1086
1087     wxArrayGenericTreeItems& siblings = parent->GetChildren();
1088     int index = siblings.Index(i);
1089     wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
1090
1091     return index == 0 ? wxTreeItemId()
1092                       : wxTreeItemId(siblings[(size_t)(index - 1)]);
1093 }
1094
1095 // Only for internal use right now, but should probably be public
1096 wxTreeItemId wxGenericTreeCtrl::GetNext(const wxTreeItemId& item) const
1097 {
1098     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1099
1100     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
1101
1102     // First see if there are any children.
1103     wxArrayGenericTreeItems& children = i->GetChildren();
1104     if (children.GetCount() > 0)
1105     {
1106          return children.Item(0);
1107     }
1108     else
1109     {
1110          // Try a sibling of this or ancestor instead
1111          wxTreeItemId p = item;
1112          wxTreeItemId toFind;
1113          do
1114          {
1115               toFind = GetNextSibling(p);
1116               p = GetParent(p);
1117          } while (p.IsOk() && !toFind.IsOk());
1118          return toFind;
1119     }
1120 }
1121
1122 wxTreeItemId wxGenericTreeCtrl::GetFirstVisibleItem() const
1123 {
1124     wxTreeItemId id = GetRootItem();
1125     if (!id.IsOk())
1126         return id;
1127
1128     do
1129     {
1130         if (IsVisible(id))
1131               return id;
1132         id = GetNext(id);
1133     } while (id.IsOk());
1134
1135     return wxTreeItemId();
1136 }
1137
1138 wxTreeItemId wxGenericTreeCtrl::GetNextVisible(const wxTreeItemId& item) const
1139 {
1140     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1141
1142     wxTreeItemId id = item;
1143     if (id.IsOk())
1144     {
1145         while (id = GetNext(id), id.IsOk())
1146         {
1147             if (IsVisible(id))
1148                 return id;
1149         }
1150     }
1151     return wxTreeItemId();
1152 }
1153
1154 wxTreeItemId wxGenericTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
1155 {
1156     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1157
1158     wxFAIL_MSG(wxT("not implemented"));
1159
1160     return wxTreeItemId();
1161 }
1162
1163 // -----------------------------------------------------------------------------
1164 // operations
1165 // -----------------------------------------------------------------------------
1166
1167 wxTreeItemId wxGenericTreeCtrl::DoInsertItem(const wxTreeItemId& parentId,
1168                                       size_t previous,
1169                                       const wxString& text,
1170                                       int image, int selImage,
1171                                       wxTreeItemData *data)
1172 {
1173     wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
1174     if ( !parent )
1175     {
1176         // should we give a warning here?
1177         return AddRoot(text, image, selImage, data);
1178     }
1179
1180     m_dirty = TRUE;     // do this first so stuff below doesn't cause flicker
1181
1182     wxGenericTreeItem *item =
1183         new wxGenericTreeItem( parent, text, image, selImage, data );
1184
1185     if ( data != NULL )
1186     {
1187         data->m_pItem = (long) item;
1188     }
1189
1190     parent->Insert( item, previous );
1191
1192     return item;
1193 }
1194
1195 wxTreeItemId wxGenericTreeCtrl::AddRoot(const wxString& text,
1196                                  int image, int selImage,
1197                                  wxTreeItemData *data)
1198 {
1199     wxCHECK_MSG( !m_anchor, wxTreeItemId(), wxT("tree can have only one root") );
1200
1201     m_dirty = TRUE;     // do this first so stuff below doesn't cause flicker
1202
1203     m_anchor = new wxGenericTreeItem((wxGenericTreeItem *)NULL, text,
1204                                    image, selImage, data);
1205     if ( data != NULL )
1206     {
1207         data->m_pItem = (long) m_anchor;
1208     }
1209
1210     if (HasFlag(wxTR_HIDE_ROOT))
1211     {
1212         // if root is hidden, make sure we can navigate
1213         // into children
1214         m_anchor->SetHasPlus();
1215         m_anchor->Expand();
1216         CalculatePositions();
1217     }
1218
1219     if (!HasFlag(wxTR_MULTIPLE))
1220     {
1221         m_current = m_key_current = m_anchor;
1222         m_current->SetHilight( TRUE );
1223     }
1224
1225     return m_anchor;
1226 }
1227
1228 wxTreeItemId wxGenericTreeCtrl::PrependItem(const wxTreeItemId& parent,
1229                                      const wxString& text,
1230                                      int image, int selImage,
1231                                      wxTreeItemData *data)
1232 {
1233     return DoInsertItem(parent, 0u, text, image, selImage, data);
1234 }
1235
1236 wxTreeItemId wxGenericTreeCtrl::InsertItem(const wxTreeItemId& parentId,
1237                                     const wxTreeItemId& idPrevious,
1238                                     const wxString& text,
1239                                     int image, int selImage,
1240                                     wxTreeItemData *data)
1241 {
1242     wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
1243     if ( !parent )
1244     {
1245         // should we give a warning here?
1246         return AddRoot(text, image, selImage, data);
1247     }
1248
1249     int index = parent->GetChildren().Index((wxGenericTreeItem*) idPrevious.m_pItem);
1250     wxASSERT_MSG( index != wxNOT_FOUND,
1251                   wxT("previous item in wxGenericTreeCtrl::InsertItem() is not a sibling") );
1252
1253     return DoInsertItem(parentId, (size_t)++index, text, image, selImage, data);
1254 }
1255
1256 wxTreeItemId wxGenericTreeCtrl::InsertItem(const wxTreeItemId& parentId,
1257                                     size_t before,
1258                                     const wxString& text,
1259                                     int image, int selImage,
1260                                     wxTreeItemData *data)
1261 {
1262     wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
1263     if ( !parent )
1264     {
1265         // should we give a warning here?
1266         return AddRoot(text, image, selImage, data);
1267     }
1268
1269     return DoInsertItem(parentId, before, text, image, selImage, data);
1270 }
1271
1272 wxTreeItemId wxGenericTreeCtrl::AppendItem(const wxTreeItemId& parentId,
1273                                     const wxString& text,
1274                                     int image, int selImage,
1275                                     wxTreeItemData *data)
1276 {
1277     wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
1278     if ( !parent )
1279     {
1280         // should we give a warning here?
1281         return AddRoot(text, image, selImage, data);
1282     }
1283
1284     return DoInsertItem( parent, parent->GetChildren().Count(), text,
1285                          image, selImage, data);
1286 }
1287
1288 void wxGenericTreeCtrl::SendDeleteEvent(wxGenericTreeItem *item)
1289 {
1290     wxTreeEvent event( wxEVT_COMMAND_TREE_DELETE_ITEM, GetId() );
1291     event.m_item = (long) item;
1292     event.SetEventObject( this );
1293     ProcessEvent( event );
1294 }
1295
1296 void wxGenericTreeCtrl::DeleteChildren(const wxTreeItemId& itemId)
1297 {
1298     m_dirty = TRUE;     // do this first so stuff below doesn't cause flicker
1299
1300     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1301     item->DeleteChildren(this);
1302 }
1303
1304 void wxGenericTreeCtrl::Delete(const wxTreeItemId& itemId)
1305 {
1306     m_dirty = TRUE;     // do this first so stuff below doesn't cause flicker
1307
1308     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1309
1310     // don't stay with invalid m_key_current or we will crash in
1311     // the next call to OnChar()
1312     bool changeKeyCurrent = FALSE;
1313     wxGenericTreeItem *itemKey = m_key_current;
1314     while ( itemKey )
1315     {
1316         if ( itemKey == item )
1317         {
1318             // m_key_current is a descendant of the item being deleted
1319             changeKeyCurrent = TRUE;
1320             break;
1321         }
1322         itemKey = itemKey->GetParent();
1323     }
1324
1325     wxGenericTreeItem *parent = item->GetParent();
1326     if ( parent )
1327     {
1328         parent->GetChildren().Remove( item );  // remove by value
1329     }
1330
1331     if ( changeKeyCurrent )
1332     {
1333         // may be NULL or not
1334         m_key_current = parent;
1335     }
1336
1337     item->DeleteChildren(this);
1338     SendDeleteEvent(item);
1339     delete item;
1340 }
1341
1342 void wxGenericTreeCtrl::DeleteAllItems()
1343 {
1344     if ( m_anchor )
1345     {
1346         m_dirty = TRUE;
1347
1348         m_anchor->DeleteChildren(this);
1349         delete m_anchor;
1350
1351         m_anchor = NULL;
1352     }
1353 }
1354
1355 void wxGenericTreeCtrl::Expand(const wxTreeItemId& itemId)
1356 {
1357     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1358
1359     wxCHECK_RET( item, _T("invalid item in wxGenericTreeCtrl::Expand") );
1360     wxCHECK_RET( !HasFlag(wxTR_HIDE_ROOT) || itemId != GetRootItem(),
1361                  _T("can't expand hidden root") );
1362
1363     if ( !item->HasPlus() )
1364         return;
1365
1366     if ( item->IsExpanded() )
1367         return;
1368
1369     wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_EXPANDING, GetId() );
1370     event.m_item = (long) item;
1371     event.SetEventObject( this );
1372
1373     if ( ProcessEvent( event ) && !event.IsAllowed() )
1374     {
1375         // cancelled by program
1376         return;
1377     }
1378
1379     item->Expand();
1380     CalculatePositions();
1381
1382     RefreshSubtree(item);
1383
1384     event.SetEventType(wxEVT_COMMAND_TREE_ITEM_EXPANDED);
1385     ProcessEvent( event );
1386 }
1387
1388 void wxGenericTreeCtrl::ExpandAll(const wxTreeItemId& item)
1389 {
1390     Expand(item);
1391     if ( IsExpanded(item) )
1392     {
1393         long cookie;
1394         wxTreeItemId child = GetFirstChild(item, cookie);
1395         while ( child.IsOk() )
1396         {
1397             ExpandAll(child);
1398
1399             child = GetNextChild(item, cookie);
1400         }
1401     }
1402 }
1403
1404 void wxGenericTreeCtrl::Collapse(const wxTreeItemId& itemId)
1405 {
1406     wxCHECK_RET( !HasFlag(wxTR_HIDE_ROOT) || itemId != GetRootItem(),
1407                  _T("can't collapse hidden root") );
1408
1409     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1410
1411     if ( !item->IsExpanded() )
1412         return;
1413
1414     wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_COLLAPSING, GetId() );
1415     event.m_item = (long) item;
1416     event.SetEventObject( this );
1417     if ( ProcessEvent( event ) && !event.IsAllowed() )
1418     {
1419         // cancelled by program
1420         return;
1421     }
1422
1423     item->Collapse();
1424
1425 #if 0  // TODO why should items be collapsed recursively?
1426     wxArrayGenericTreeItems& children = item->GetChildren();
1427     size_t count = children.Count();
1428     for ( size_t n = 0; n < count; n++ )
1429     {
1430         Collapse(children[n]);
1431     }
1432 #endif
1433
1434     CalculatePositions();
1435
1436     RefreshSubtree(item);
1437
1438     event.SetEventType(wxEVT_COMMAND_TREE_ITEM_COLLAPSED);
1439     ProcessEvent( event );
1440 }
1441
1442 void wxGenericTreeCtrl::CollapseAndReset(const wxTreeItemId& item)
1443 {
1444     Collapse(item);
1445     DeleteChildren(item);
1446 }
1447
1448 void wxGenericTreeCtrl::Toggle(const wxTreeItemId& itemId)
1449 {
1450     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1451
1452     if (item->IsExpanded())
1453         Collapse(itemId);
1454     else
1455         Expand(itemId);
1456 }
1457
1458 void wxGenericTreeCtrl::Unselect()
1459 {
1460     if (m_current)
1461     {
1462         m_current->SetHilight( FALSE );
1463         RefreshLine( m_current );
1464     }
1465 }
1466
1467 void wxGenericTreeCtrl::UnselectAllChildren(wxGenericTreeItem *item)
1468 {
1469     if (item->IsSelected())
1470     {
1471         item->SetHilight(FALSE);
1472         RefreshLine(item);
1473     }
1474
1475     if (item->HasChildren())
1476     {
1477         wxArrayGenericTreeItems& children = item->GetChildren();
1478         size_t count = children.Count();
1479         for ( size_t n = 0; n < count; ++n )
1480         {
1481             UnselectAllChildren(children[n]);
1482         }
1483     }
1484 }
1485
1486 void wxGenericTreeCtrl::UnselectAll()
1487 {
1488     wxTreeItemId rootItem = GetRootItem();
1489
1490     // the tree might not have the root item at all
1491     if ( rootItem )
1492     {
1493         UnselectAllChildren((wxGenericTreeItem*) rootItem.m_pItem);
1494     }
1495 }
1496
1497 // Recursive function !
1498 // To stop we must have crt_item<last_item
1499 // Algorithm :
1500 // Tag all next children, when no more children,
1501 // Move to parent (not to tag)
1502 // Keep going... if we found last_item, we stop.
1503 bool wxGenericTreeCtrl::TagNextChildren(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select)
1504 {
1505     wxGenericTreeItem *parent = crt_item->GetParent();
1506
1507     if (parent == NULL) // This is root item
1508         return TagAllChildrenUntilLast(crt_item, last_item, select);
1509
1510     wxArrayGenericTreeItems& children = parent->GetChildren();
1511     int index = children.Index(crt_item);
1512     wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
1513
1514     size_t count = children.Count();
1515     for (size_t n=(size_t)(index+1); n<count; ++n)
1516     {
1517         if (TagAllChildrenUntilLast(children[n], last_item, select)) return TRUE;
1518     }
1519
1520     return TagNextChildren(parent, last_item, select);
1521 }
1522
1523 bool wxGenericTreeCtrl::TagAllChildrenUntilLast(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select)
1524 {
1525     crt_item->SetHilight(select);
1526     RefreshLine(crt_item);
1527
1528     if (crt_item==last_item)
1529         return TRUE;
1530
1531     if (crt_item->HasChildren())
1532     {
1533         wxArrayGenericTreeItems& children = crt_item->GetChildren();
1534         size_t count = children.Count();
1535         for ( size_t n = 0; n < count; ++n )
1536         {
1537             if (TagAllChildrenUntilLast(children[n], last_item, select))
1538                 return TRUE;
1539         }
1540     }
1541
1542   return FALSE;
1543 }
1544
1545 void wxGenericTreeCtrl::SelectItemRange(wxGenericTreeItem *item1, wxGenericTreeItem *item2)
1546 {
1547     // item2 is not necessary after item1
1548     wxGenericTreeItem *first=NULL, *last=NULL;
1549
1550     // choice first' and 'last' between item1 and item2
1551     if (item1->GetY()<item2->GetY())
1552     {
1553         first=item1;
1554         last=item2;
1555     }
1556     else
1557     {
1558         first=item2;
1559         last=item1;
1560     }
1561
1562     bool select = m_current->IsSelected();
1563
1564     if ( TagAllChildrenUntilLast(first,last,select) )
1565         return;
1566
1567     TagNextChildren(first,last,select);
1568 }
1569
1570 void wxGenericTreeCtrl::SelectItem(const wxTreeItemId& itemId,
1571                             bool unselect_others,
1572                             bool extended_select)
1573 {
1574     wxCHECK_RET( itemId.IsOk(), wxT("invalid tree item") );
1575
1576     bool is_single=!(GetWindowStyleFlag() & wxTR_MULTIPLE);
1577     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1578
1579     //wxCHECK_RET( ( (!unselect_others) && is_single),
1580     //           wxT("this is a single selection tree") );
1581
1582     // to keep going anyhow !!!
1583     if (is_single)
1584     {
1585         if (item->IsSelected())
1586             return; // nothing to do
1587         unselect_others = TRUE;
1588         extended_select = FALSE;
1589     }
1590     else if ( unselect_others && item->IsSelected() )
1591     {
1592         // selection change if there is more than one item currently selected
1593         wxArrayTreeItemIds selected_items;
1594         if ( GetSelections(selected_items) == 1 )
1595             return;
1596     }
1597
1598     wxTreeEvent event( wxEVT_COMMAND_TREE_SEL_CHANGING, GetId() );
1599     event.m_item = (long) item;
1600     event.m_itemOld = (long) m_current;
1601     event.SetEventObject( this );
1602     // TODO : Here we don't send any selection mode yet !
1603
1604     if ( GetEventHandler()->ProcessEvent( event ) && !event.IsAllowed() )
1605         return;
1606
1607     wxTreeItemId parent = GetParent( itemId );
1608     while (parent.IsOk())
1609     {
1610         if (!IsExpanded(parent))
1611             Expand( parent );
1612
1613         parent = GetParent( parent );
1614     }
1615
1616     EnsureVisible( itemId );
1617
1618     // ctrl press
1619     if (unselect_others)
1620     {
1621         if (is_single) Unselect(); // to speed up thing
1622         else UnselectAll();
1623     }
1624
1625     // shift press
1626     if (extended_select)
1627     {
1628         if ( !m_current )
1629         {
1630             m_current = m_key_current = (wxGenericTreeItem*) GetRootItem().m_pItem;
1631         }
1632
1633         // don't change the mark (m_current)
1634         SelectItemRange(m_current, item);
1635     }
1636     else
1637     {
1638         bool select=TRUE; // the default
1639
1640         // Check if we need to toggle hilight (ctrl mode)
1641         if (!unselect_others)
1642             select=!item->IsSelected();
1643
1644         m_current = m_key_current = item;
1645         m_current->SetHilight(select);
1646         RefreshLine( m_current );
1647     }
1648
1649     event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED);
1650     GetEventHandler()->ProcessEvent( event );
1651 }
1652
1653 void wxGenericTreeCtrl::FillArray(wxGenericTreeItem *item,
1654                            wxArrayTreeItemIds &array) const
1655 {
1656     if ( item->IsSelected() )
1657         array.Add(wxTreeItemId(item));
1658
1659     if ( item->HasChildren() )
1660     {
1661         wxArrayGenericTreeItems& children = item->GetChildren();
1662         size_t count = children.GetCount();
1663         for ( size_t n = 0; n < count; ++n )
1664             FillArray(children[n], array);
1665     }
1666 }
1667
1668 size_t wxGenericTreeCtrl::GetSelections(wxArrayTreeItemIds &array) const
1669 {
1670     array.Empty();
1671     wxTreeItemId idRoot = GetRootItem();
1672     if ( idRoot.IsOk() )
1673     {
1674         FillArray((wxGenericTreeItem*) idRoot.m_pItem, array);
1675     }
1676     //else: the tree is empty, so no selections
1677
1678     return array.Count();
1679 }
1680
1681 void wxGenericTreeCtrl::EnsureVisible(const wxTreeItemId& item)
1682 {
1683     if (!item.IsOk()) return;
1684
1685     wxGenericTreeItem *gitem = (wxGenericTreeItem*) item.m_pItem;
1686
1687     // first expand all parent branches
1688     wxGenericTreeItem *parent = gitem->GetParent();
1689
1690     if ( HasFlag(wxTR_HIDE_ROOT) )
1691     {
1692         while ( parent != m_anchor )
1693         {
1694             Expand(parent);
1695             parent = parent->GetParent();
1696         }
1697     }
1698     else
1699     {
1700         while ( parent )
1701         {
1702             Expand(parent);
1703             parent = parent->GetParent();
1704         }
1705     }
1706
1707     //if (parent) CalculatePositions();
1708
1709     ScrollTo(item);
1710 }
1711
1712 void wxGenericTreeCtrl::ScrollTo(const wxTreeItemId &item)
1713 {
1714     if (!item.IsOk()) return;
1715
1716     // We have to call this here because the label in
1717     // question might just have been added and no screen
1718     // update taken place.
1719     if (m_dirty) wxYieldIfNeeded();
1720
1721     wxGenericTreeItem *gitem = (wxGenericTreeItem*) item.m_pItem;
1722
1723     // now scroll to the item
1724     int item_y = gitem->GetY();
1725
1726     int start_x = 0;
1727     int start_y = 0;
1728     GetViewStart( &start_x, &start_y );
1729     start_y *= PIXELS_PER_UNIT;
1730
1731     int client_h = 0;
1732     int client_w = 0;
1733     GetClientSize( &client_w, &client_h );
1734
1735     if (item_y < start_y+3)
1736     {
1737         // going down
1738         int x = 0;
1739         int y = 0;
1740         m_anchor->GetSize( x, y, this );
1741         y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1742         x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1743         int x_pos = GetScrollPos( wxHORIZONTAL );
1744         // Item should appear at top
1745         SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, item_y/PIXELS_PER_UNIT );
1746     }
1747     else if (item_y+GetLineHeight(gitem) > start_y+client_h)
1748     {
1749         // going up
1750         int x = 0;
1751         int y = 0;
1752         m_anchor->GetSize( x, y, this );
1753         y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1754         x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1755         item_y += PIXELS_PER_UNIT+2;
1756         int x_pos = GetScrollPos( wxHORIZONTAL );
1757         // Item should appear at bottom
1758         SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, (item_y+GetLineHeight(gitem)-client_h)/PIXELS_PER_UNIT );
1759     }
1760 }
1761
1762 // FIXME: tree sorting functions are not reentrant and not MT-safe!
1763 static wxGenericTreeCtrl *s_treeBeingSorted = NULL;
1764
1765 static int LINKAGEMODE tree_ctrl_compare_func(wxGenericTreeItem **item1,
1766                                   wxGenericTreeItem **item2)
1767 {
1768     wxCHECK_MSG( s_treeBeingSorted, 0, wxT("bug in wxGenericTreeCtrl::SortChildren()") );
1769
1770     return s_treeBeingSorted->OnCompareItems(*item1, *item2);
1771 }
1772
1773 int wxGenericTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
1774                                const wxTreeItemId& item2)
1775 {
1776     return wxStrcmp(GetItemText(item1), GetItemText(item2));
1777 }
1778
1779 void wxGenericTreeCtrl::SortChildren(const wxTreeItemId& itemId)
1780 {
1781     wxCHECK_RET( itemId.IsOk(), wxT("invalid tree item") );
1782
1783     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1784
1785     wxCHECK_RET( !s_treeBeingSorted,
1786                  wxT("wxGenericTreeCtrl::SortChildren is not reentrant") );
1787
1788     wxArrayGenericTreeItems& children = item->GetChildren();
1789     if ( children.Count() > 1 )
1790     {
1791         m_dirty = TRUE;
1792
1793         s_treeBeingSorted = this;
1794         children.Sort(tree_ctrl_compare_func);
1795         s_treeBeingSorted = NULL;
1796     }
1797     //else: don't make the tree dirty as nothing changed
1798 }
1799
1800 wxImageList *wxGenericTreeCtrl::GetImageList() const
1801 {
1802     return m_imageListNormal;
1803 }
1804
1805 wxImageList *wxGenericTreeCtrl::GetButtonsImageList() const
1806 {
1807     return m_imageListButtons;
1808 }
1809
1810 wxImageList *wxGenericTreeCtrl::GetStateImageList() const
1811 {
1812     return m_imageListState;
1813 }
1814
1815 void wxGenericTreeCtrl::CalculateLineHeight()
1816 {
1817     wxClientDC dc(this);
1818     m_lineHeight = (int)(dc.GetCharHeight() + 4);
1819
1820     if ( m_imageListNormal )
1821     {
1822         // Calculate a m_lineHeight value from the normal Image sizes.
1823         // May be toggle off. Then wxGenericTreeCtrl will spread when
1824         // necessary (which might look ugly).
1825         int n = m_imageListNormal->GetImageCount();
1826         for (int i = 0; i < n ; i++)
1827         {
1828             int width = 0, height = 0;
1829             m_imageListNormal->GetSize(i, width, height);
1830             if (height > m_lineHeight) m_lineHeight = height;
1831         }
1832     }
1833
1834     if (m_imageListButtons)
1835     {
1836         // Calculate a m_lineHeight value from the Button image sizes.
1837         // May be toggle off. Then wxGenericTreeCtrl will spread when
1838         // necessary (which might look ugly).
1839         int n = m_imageListButtons->GetImageCount();
1840         for (int i = 0; i < n ; i++)
1841         {
1842             int width = 0, height = 0;
1843             m_imageListButtons->GetSize(i, width, height);
1844             if (height > m_lineHeight) m_lineHeight = height;
1845         }
1846     }
1847
1848     if (m_lineHeight < 30)
1849         m_lineHeight += 2;                 // at least 2 pixels
1850     else
1851         m_lineHeight += m_lineHeight/10;   // otherwise 10% extra spacing
1852 }
1853
1854 void wxGenericTreeCtrl::SetImageList(wxImageList *imageList)
1855 {
1856     if (m_ownsImageListNormal) delete m_imageListNormal;
1857     m_imageListNormal = imageList;
1858     m_ownsImageListNormal = FALSE;
1859     m_dirty = TRUE;
1860     CalculateLineHeight();
1861 }
1862
1863 void wxGenericTreeCtrl::SetStateImageList(wxImageList *imageList)
1864 {
1865     if (m_ownsImageListState) delete m_imageListState;
1866     m_imageListState = imageList;
1867     m_ownsImageListState = FALSE;
1868 }
1869
1870 void wxGenericTreeCtrl::SetButtonsImageList(wxImageList *imageList)
1871 {
1872     if (m_ownsImageListButtons) delete m_imageListButtons;
1873     m_imageListButtons = imageList;
1874     m_ownsImageListButtons = FALSE;
1875     m_dirty = TRUE;
1876     CalculateLineHeight();
1877 }
1878
1879 void wxGenericTreeCtrl::AssignImageList(wxImageList *imageList)
1880 {
1881     SetImageList(imageList);
1882     m_ownsImageListNormal = TRUE;
1883 }
1884
1885 void wxGenericTreeCtrl::AssignStateImageList(wxImageList *imageList)
1886 {
1887     SetStateImageList(imageList);
1888     m_ownsImageListState = TRUE;
1889 }
1890
1891 void wxGenericTreeCtrl::AssignButtonsImageList(wxImageList *imageList)
1892 {
1893     SetButtonsImageList(imageList);
1894     m_ownsImageListButtons = TRUE;
1895 }
1896
1897 // -----------------------------------------------------------------------------
1898 // helpers
1899 // -----------------------------------------------------------------------------
1900
1901 void wxGenericTreeCtrl::AdjustMyScrollbars()
1902 {
1903     if (m_anchor)
1904     {
1905         int x = 0, y = 0;
1906         m_anchor->GetSize( x, y, this );
1907         y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1908         x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1909         int x_pos = GetScrollPos( wxHORIZONTAL );
1910         int y_pos = GetScrollPos( wxVERTICAL );
1911         SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, y_pos );
1912     }
1913     else
1914     {
1915         SetScrollbars( 0, 0, 0, 0 );
1916     }
1917 }
1918
1919 int wxGenericTreeCtrl::GetLineHeight(wxGenericTreeItem *item) const
1920 {
1921     if (GetWindowStyleFlag() & wxTR_HAS_VARIABLE_ROW_HEIGHT)
1922         return item->GetHeight();
1923     else
1924         return m_lineHeight;
1925 }
1926
1927 void wxGenericTreeCtrl::PaintItem(wxGenericTreeItem *item, wxDC& dc)
1928 {
1929     // TODO implement "state" icon on items
1930
1931     wxTreeItemAttr *attr = item->GetAttributes();
1932     if ( attr && attr->HasFont() )
1933         dc.SetFont(attr->GetFont());
1934     else if (item->IsBold())
1935         dc.SetFont(m_boldFont);
1936
1937     long text_w = 0, text_h = 0;
1938     dc.GetTextExtent( item->GetText(), &text_w, &text_h );
1939
1940     int image_h = 0, image_w = 0;
1941     int image = item->GetCurrentImage();
1942     if ( image != NO_IMAGE )
1943     {
1944         if ( m_imageListNormal )
1945         {
1946             m_imageListNormal->GetSize( image, image_w, image_h );
1947             image_w += 4;
1948         }
1949         else
1950         {
1951             image = NO_IMAGE;
1952         }
1953     }
1954
1955     int total_h = GetLineHeight(item);
1956
1957     if ( item->IsSelected() )
1958     {
1959         dc.SetBrush(*(m_hasFocus ? m_hilightBrush : m_hilightUnfocusedBrush));
1960     }
1961     else
1962     {
1963         wxColour colBg;
1964         if ( attr && attr->HasBackgroundColour() )
1965             colBg = attr->GetBackgroundColour();
1966         else
1967             colBg = m_backgroundColour;
1968         dc.SetBrush(wxBrush(colBg, wxSOLID));
1969     }
1970
1971     int offset = HasFlag(wxTR_ROW_LINES) ? 1 : 0;
1972
1973     if ( HasFlag(wxTR_FULL_ROW_HIGHLIGHT) )
1974     {
1975         int x, y, w, h;
1976
1977         DoGetPosition(&x, &y);
1978         DoGetSize(&w, &h);
1979         dc.DrawRectangle(x, item->GetY()+offset, w, total_h-offset);
1980     }
1981     else
1982     {
1983         if ( item->IsSelected() && image != NO_IMAGE )
1984         {
1985             // If it's selected, and there's an image, then we should
1986             // take care to leave the area under the image painted in the
1987             // background colour.
1988             dc.DrawRectangle( item->GetX() + image_w - 2, item->GetY()+offset,
1989                               item->GetWidth() - image_w + 2, total_h-offset );
1990         }
1991         else
1992         {
1993             dc.DrawRectangle( item->GetX()-2, item->GetY()+offset,
1994                               item->GetWidth()+2, total_h-offset );
1995         }
1996     }
1997
1998     if ( image != NO_IMAGE )
1999     {
2000         dc.SetClippingRegion( item->GetX(), item->GetY(), image_w-2, total_h );
2001         m_imageListNormal->Draw( image, dc,
2002                                  item->GetX(),
2003                                  item->GetY() +((total_h > image_h)?((total_h-image_h)/2):0),
2004                                  wxIMAGELIST_DRAW_TRANSPARENT );
2005         dc.DestroyClippingRegion();
2006     }
2007
2008     dc.SetBackgroundMode(wxTRANSPARENT);
2009     int extraH = (total_h > text_h) ? (total_h - text_h)/2 : 0;
2010     dc.DrawText( item->GetText(),
2011                  (wxCoord)(image_w + item->GetX()),
2012                  (wxCoord)(item->GetY() + extraH));
2013
2014     // restore normal font
2015     dc.SetFont( m_normalFont );
2016 }
2017
2018 // Now y stands for the top of the item, whereas it used to stand for middle !
2019 void wxGenericTreeCtrl::PaintLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y )
2020 {
2021     int x = level*m_indent;
2022     if (!HasFlag(wxTR_HIDE_ROOT))
2023     {
2024         x += m_indent;
2025     }
2026     else if (level == 0)
2027     {
2028         // always expand hidden root
2029         int origY = y;
2030         wxArrayGenericTreeItems& children = item->GetChildren();
2031         int count = children.Count();
2032         if (count > 0)
2033         {
2034             int n = 0, oldY;
2035             do {
2036                 oldY = y;
2037                 PaintLevel(children[n], dc, 1, y);
2038             } while (++n < count);
2039
2040             if (!HasFlag(wxTR_NO_LINES) && HasFlag(wxTR_LINES_AT_ROOT) && count > 0)
2041             {
2042                 // draw line down to last child
2043                 origY += GetLineHeight(children[0])>>1;
2044                 oldY += GetLineHeight(children[n-1])>>1;
2045                 dc.DrawLine(3, origY, 3, oldY);
2046             }
2047         }
2048         return;
2049     }
2050
2051     item->SetX(x+m_spacing);
2052     item->SetY(y);
2053
2054     int h = GetLineHeight(item);
2055     int y_top = y;
2056     int y_mid = y_top + (h>>1);
2057     y += h;
2058
2059     int exposed_x = dc.LogicalToDeviceX(0);
2060     int exposed_y = dc.LogicalToDeviceY(y_top);
2061
2062     if (IsExposed(exposed_x, exposed_y, 10000, h))  // 10000 = very much
2063     {
2064         wxPen *pen =
2065 #ifndef __WXMAC__
2066             // don't draw rect outline if we already have the
2067             // background color under Mac
2068             (item->IsSelected() && m_hasFocus) ? wxBLACK_PEN :
2069 #endif // !__WXMAC__
2070             wxTRANSPARENT_PEN;
2071
2072         wxColour colText;
2073         if ( item->IsSelected() )
2074         {
2075             colText = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
2076         }
2077         else
2078         {
2079             wxTreeItemAttr *attr = item->GetAttributes();
2080             if (attr && attr->HasTextColour())
2081                 colText = attr->GetTextColour();
2082             else
2083                 colText = GetForegroundColour();
2084         }
2085
2086         // prepare to draw
2087         dc.SetTextForeground(colText);
2088         dc.SetPen(*pen);
2089
2090         // draw
2091         PaintItem(item, dc);
2092
2093         if (HasFlag(wxTR_ROW_LINES))
2094         {
2095             // if the background colour is white, choose a
2096             // contrasting color for the lines
2097             dc.SetPen(*((GetBackgroundColour() == *wxWHITE)
2098                          ? wxMEDIUM_GREY_PEN : wxWHITE_PEN));
2099             dc.DrawLine(0, y_top, 10000, y_top);
2100             dc.DrawLine(0, y, 10000, y);
2101         }
2102
2103         // restore DC objects
2104         dc.SetBrush(*wxWHITE_BRUSH);
2105         dc.SetPen(m_dottedPen);
2106         dc.SetTextForeground(*wxBLACK);
2107
2108         if (item->HasPlus() && HasButtons())  // should the item show a button?
2109         {
2110             if (!HasFlag(wxTR_NO_LINES))
2111             {
2112                 if (x > (signed)m_indent)
2113                     dc.DrawLine(x - m_indent, y_mid, x - 5, y_mid);
2114                 else if (HasFlag(wxTR_LINES_AT_ROOT))
2115                     dc.DrawLine(3, y_mid, x - 5, y_mid);
2116                 dc.DrawLine(x + 5, y_mid, x + m_spacing, y_mid);
2117             }
2118
2119             if (m_imageListButtons != NULL)
2120             {
2121                 // draw the image button here
2122                 int image_h = 0, image_w = 0, image = wxTreeItemIcon_Normal;
2123                 if (item->IsExpanded()) image = wxTreeItemIcon_Expanded;
2124                 if (item->IsSelected())
2125                     image += wxTreeItemIcon_Selected - wxTreeItemIcon_Normal;
2126                 m_imageListButtons->GetSize(image, image_w, image_h);
2127                 int xx = x - (image_w>>1);
2128                 int yy = y_mid - (image_h>>1);
2129                 dc.SetClippingRegion(xx, yy, image_w, image_h);
2130                 m_imageListButtons->Draw(image, dc, xx, yy,
2131                                          wxIMAGELIST_DRAW_TRANSPARENT);
2132                 dc.DestroyClippingRegion();
2133             }
2134             else if (HasFlag(wxTR_TWIST_BUTTONS))
2135             {
2136                 // draw the twisty button here
2137
2138                 if (HasFlag(wxTR_AQUA_BUTTONS))
2139                 {
2140                     if (item->IsExpanded())
2141                         dc.DrawBitmap( *m_arrowDown, x-5, y_mid-6, TRUE );
2142                     else
2143                         dc.DrawBitmap( *m_arrowRight, x-5, y_mid-6, TRUE );
2144                 }
2145                 else
2146                 {
2147                     dc.SetBrush(*m_hilightBrush);
2148                     dc.SetPen(*wxBLACK_PEN);
2149                     wxPoint button[3];
2150
2151                     if (item->IsExpanded())
2152                     {
2153                         button[0].x = x-5;
2154                         button[0].y = y_mid-2;
2155                         button[1].x = x+5;
2156                         button[1].y = y_mid-2;
2157                         button[2].x = x;
2158                         button[2].y = y_mid+3;
2159                     }
2160                     else
2161                     {
2162                         button[0].y = y_mid-5;
2163                         button[0].x = x-2;
2164                         button[1].y = y_mid+5;
2165                         button[1].x = x-2;
2166                         button[2].y = y_mid;
2167                         button[2].x = x+3;
2168                     }
2169                     dc.DrawPolygon(3, button);
2170                     dc.SetPen(m_dottedPen);
2171                 }
2172             }
2173             else // if (HasFlag(wxTR_HAS_BUTTONS))
2174             {
2175                 // draw the plus sign here
2176                 dc.SetPen(*wxGREY_PEN);
2177                 dc.SetBrush(*wxWHITE_BRUSH);
2178                 dc.DrawRectangle(x-5, y_mid-4, 11, 9);
2179                 dc.SetPen(*wxBLACK_PEN);
2180                 dc.DrawLine(x-2, y_mid, x+3, y_mid);
2181                 if (!item->IsExpanded())
2182                     dc.DrawLine(x, y_mid-2, x, y_mid+3);
2183                 dc.SetPen(m_dottedPen);
2184             }
2185         }
2186         else if (!HasFlag(wxTR_NO_LINES))  // no button; maybe a line?
2187         {
2188             // draw the horizontal line here
2189             int x_start = x;
2190             if (x > (signed)m_indent)
2191                 x_start -= m_indent;
2192             else if (HasFlag(wxTR_LINES_AT_ROOT))
2193                 x_start = 3;
2194             dc.DrawLine(x_start, y_mid, x + m_spacing, y_mid);
2195         }
2196     }
2197
2198     if (item->IsExpanded())
2199     {
2200         wxArrayGenericTreeItems& children = item->GetChildren();
2201         int count = children.Count();
2202         if (count > 0)
2203         {
2204             int n = 0, oldY;
2205             ++level;
2206             do {
2207                 oldY = y;
2208                 PaintLevel(children[n], dc, level, y);
2209             } while (++n < count);
2210
2211             if (!HasFlag(wxTR_NO_LINES) && count > 0)
2212             {
2213                 // draw line down to last child
2214                 oldY += GetLineHeight(children[n-1])>>1;
2215                 if (HasButtons()) y_mid += 5;
2216                 dc.DrawLine(x, y_mid, x, oldY);
2217             }
2218         }
2219     }
2220 }
2221
2222 void wxGenericTreeCtrl::DrawDropEffect(wxGenericTreeItem *item)
2223 {
2224     if ( item )
2225     {
2226         if ( item->HasPlus() )
2227         {
2228             // it's a folder, indicate it by a border
2229             DrawBorder(item);
2230         }
2231         else
2232         {
2233             // draw a line under the drop target because the item will be
2234             // dropped there
2235             DrawLine(item, TRUE /* below */);
2236         }
2237
2238         SetCursor(wxCURSOR_BULLSEYE);
2239     }
2240     else
2241     {
2242         // can't drop here
2243         SetCursor(wxCURSOR_NO_ENTRY);
2244     }
2245 }
2246
2247 void wxGenericTreeCtrl::DrawBorder(const wxTreeItemId &item)
2248 {
2249     wxCHECK_RET( item.IsOk(), _T("invalid item in wxGenericTreeCtrl::DrawLine") );
2250
2251     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
2252
2253     wxClientDC dc(this);
2254     PrepareDC( dc );
2255     dc.SetLogicalFunction(wxINVERT);
2256     dc.SetBrush(*wxTRANSPARENT_BRUSH);
2257
2258     int w = i->GetWidth() + 2;
2259     int h = GetLineHeight(i) + 2;
2260
2261     dc.DrawRectangle( i->GetX() - 1, i->GetY() - 1, w, h);
2262 }
2263
2264 void wxGenericTreeCtrl::DrawLine(const wxTreeItemId &item, bool below)
2265 {
2266     wxCHECK_RET( item.IsOk(), _T("invalid item in wxGenericTreeCtrl::DrawLine") );
2267
2268     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
2269
2270     wxClientDC dc(this);
2271     PrepareDC( dc );
2272     dc.SetLogicalFunction(wxINVERT);
2273
2274     int x = i->GetX(),
2275         y = i->GetY();
2276     if ( below )
2277     {
2278         y += GetLineHeight(i) - 1;
2279     }
2280
2281     dc.DrawLine( x, y, x + i->GetWidth(), y);
2282 }
2283
2284 // -----------------------------------------------------------------------------
2285 // wxWindows callbacks
2286 // -----------------------------------------------------------------------------
2287
2288 void wxGenericTreeCtrl::OnPaint( wxPaintEvent &WXUNUSED(event) )
2289 {
2290     wxPaintDC dc(this);
2291     PrepareDC( dc );
2292
2293     if ( !m_anchor)
2294         return;
2295
2296     dc.SetFont( m_normalFont );
2297     dc.SetPen( m_dottedPen );
2298
2299     // this is now done dynamically
2300     //if(GetImageList() == NULL)
2301     // m_lineHeight = (int)(dc.GetCharHeight() + 4);
2302
2303     int y = 2;
2304     PaintLevel( m_anchor, dc, 0, y );
2305 }
2306
2307 void wxGenericTreeCtrl::OnSetFocus( wxFocusEvent &event )
2308 {
2309     m_hasFocus = TRUE;
2310
2311     RefreshSelected();
2312
2313     event.Skip();
2314 }
2315
2316 void wxGenericTreeCtrl::OnKillFocus( wxFocusEvent &event )
2317 {
2318     m_hasFocus = FALSE;
2319
2320     RefreshSelected();
2321
2322     event.Skip();
2323 }
2324
2325 void wxGenericTreeCtrl::OnChar( wxKeyEvent &event )
2326 {
2327     wxTreeEvent te( wxEVT_COMMAND_TREE_KEY_DOWN, GetId() );
2328     te.m_evtKey = event;
2329     te.SetEventObject( this );
2330     if ( GetEventHandler()->ProcessEvent( te ) )
2331     {
2332         // intercepted by the user code
2333         return;
2334     }
2335
2336     if ( (m_current == 0) || (m_key_current == 0) )
2337     {
2338         event.Skip();
2339         return;
2340     }
2341
2342     // how should the selection work for this event?
2343     bool is_multiple, extended_select, unselect_others;
2344     EventFlagsToSelType(GetWindowStyleFlag(),
2345                         event.ShiftDown(),
2346                         event.ControlDown(),
2347                         is_multiple, extended_select, unselect_others);
2348
2349     // + : Expand
2350     // - : Collaspe
2351     // * : Expand all/Collapse all
2352     // ' ' | return : activate
2353     // up    : go up (not last children!)
2354     // down  : go down
2355     // left  : go to parent
2356     // right : open if parent and go next
2357     // home  : go to root
2358     // end   : go to last item without opening parents
2359     switch (event.KeyCode())
2360     {
2361         case '+':
2362         case WXK_ADD:
2363             if (m_current->HasPlus() && !IsExpanded(m_current))
2364             {
2365                 Expand(m_current);
2366             }
2367             break;
2368
2369         case '*':
2370         case WXK_MULTIPLY:
2371             if ( !IsExpanded(m_current) )
2372             {
2373                 // expand all
2374                 ExpandAll(m_current);
2375                 break;
2376             }
2377             //else: fall through to Collapse() it
2378
2379         case '-':
2380         case WXK_SUBTRACT:
2381             if (IsExpanded(m_current))
2382             {
2383                 Collapse(m_current);
2384             }
2385             break;
2386
2387         case ' ':
2388         case WXK_RETURN:
2389             {
2390                 wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
2391                 event.m_item = (long) m_current;
2392                 event.SetEventObject( this );
2393                 GetEventHandler()->ProcessEvent( event );
2394             }
2395             break;
2396
2397             // up goes to the previous sibling or to the last
2398             // of its children if it's expanded
2399         case WXK_UP:
2400             {
2401                 wxTreeItemId prev = GetPrevSibling( m_key_current );
2402                 if (!prev)
2403                 {
2404                     prev = GetParent( m_key_current );
2405                     if ((prev == GetRootItem()) && HasFlag(wxTR_HIDE_ROOT))
2406                     {
2407                         break;  // don't go to root if it is hidden
2408                     }
2409                     if (prev)
2410                     {
2411                         long cookie = 0;
2412                         wxTreeItemId current = m_key_current;
2413                         // TODO: Huh?  If we get here, we'd better be the first child of our parent.  How else could it be?
2414                         if (current == GetFirstChild( prev, cookie ))
2415                         {
2416                             // otherwise we return to where we came from
2417                             SelectItem( prev, unselect_others, extended_select );
2418                             m_key_current= (wxGenericTreeItem*) prev.m_pItem;
2419                             EnsureVisible( prev );
2420                             break;
2421                         }
2422                     }
2423                 }
2424                 if (prev)
2425                 {
2426                     while ( IsExpanded(prev) && HasChildren(prev) )
2427                     {
2428                         wxTreeItemId child = GetLastChild(prev);
2429                         if ( child )
2430                         {
2431                             prev = child;
2432                         }
2433                     }
2434
2435                     SelectItem( prev, unselect_others, extended_select );
2436                     m_key_current=(wxGenericTreeItem*) prev.m_pItem;
2437                     EnsureVisible( prev );
2438                 }
2439             }
2440             break;
2441
2442             // left arrow goes to the parent
2443         case WXK_LEFT:
2444             {
2445                 wxTreeItemId prev = GetParent( m_current );
2446                 if ((prev == GetRootItem()) && HasFlag(wxTR_HIDE_ROOT))
2447                 {
2448                     // don't go to root if it is hidden
2449                     prev = GetPrevSibling( m_current );
2450                 }
2451                 if (prev)
2452                 {
2453                     EnsureVisible( prev );
2454                     SelectItem( prev, unselect_others, extended_select );
2455                 }
2456             }
2457             break;
2458
2459         case WXK_RIGHT:
2460             // this works the same as the down arrow except that we
2461             // also expand the item if it wasn't expanded yet
2462             Expand(m_current);
2463             // fall through
2464
2465         case WXK_DOWN:
2466             {
2467                 if (IsExpanded(m_key_current) && HasChildren(m_key_current))
2468                 {
2469                     long cookie = 0;
2470                     wxTreeItemId child = GetFirstChild( m_key_current, cookie );
2471                     SelectItem( child, unselect_others, extended_select );
2472                     m_key_current=(wxGenericTreeItem*) child.m_pItem;
2473                     EnsureVisible( child );
2474                 }
2475                 else
2476                 {
2477                     wxTreeItemId next = GetNextSibling( m_key_current );
2478                     if (!next)
2479                     {
2480                         wxTreeItemId current = m_key_current;
2481                         while (current && !next)
2482                         {
2483                             current = GetParent( current );
2484                             if (current) next = GetNextSibling( current );
2485                         }
2486                     }
2487                     if (next)
2488                     {
2489                         SelectItem( next, unselect_others, extended_select );
2490                         m_key_current=(wxGenericTreeItem*) next.m_pItem;
2491                         EnsureVisible( next );
2492                     }
2493                 }
2494             }
2495             break;
2496
2497             // <End> selects the last visible tree item
2498         case WXK_END:
2499             {
2500                 wxTreeItemId last = GetRootItem();
2501
2502                 while ( last.IsOk() && IsExpanded(last) )
2503                 {
2504                     wxTreeItemId lastChild = GetLastChild(last);
2505
2506                     // it may happen if the item was expanded but then all of
2507                     // its children have been deleted - so IsExpanded() returned
2508                     // TRUE, but GetLastChild() returned invalid item
2509                     if ( !lastChild )
2510                         break;
2511
2512                     last = lastChild;
2513                 }
2514
2515                 if ( last.IsOk() )
2516                 {
2517                     EnsureVisible( last );
2518                     SelectItem( last, unselect_others, extended_select );
2519                 }
2520             }
2521             break;
2522
2523             // <Home> selects the root item
2524         case WXK_HOME:
2525             {
2526                 wxTreeItemId prev = GetRootItem();
2527                 if (!prev) break;
2528                 if (HasFlag(wxTR_HIDE_ROOT))
2529                 {
2530                     long dummy;
2531                     prev = GetFirstChild(prev, dummy);
2532                     if (!prev) break;
2533                 }
2534                 EnsureVisible( prev );
2535                 SelectItem( prev, unselect_others, extended_select );
2536             }
2537             break;
2538
2539         default:
2540             event.Skip();
2541     }
2542 }
2543
2544 wxTreeItemId wxGenericTreeCtrl::HitTest(const wxPoint& point, int& flags)
2545 {
2546     // JACS: removed wxYieldIfNeeded() because it can cause the window
2547     // to be deleted from under us if a close window event is pending
2548
2549     int w, h;
2550     GetSize(&w, &h);
2551     flags=0;
2552     if (point.x<0) flags |= wxTREE_HITTEST_TOLEFT;
2553     if (point.x>w) flags |= wxTREE_HITTEST_TORIGHT;
2554     if (point.y<0) flags |= wxTREE_HITTEST_ABOVE;
2555     if (point.y>h) flags |= wxTREE_HITTEST_BELOW;
2556     if (flags) return wxTreeItemId();
2557
2558     if (m_anchor == NULL)
2559     {
2560         flags = wxTREE_HITTEST_NOWHERE;
2561         return wxTreeItemId();
2562     }
2563
2564     wxGenericTreeItem *hit =  m_anchor->HitTest(CalcUnscrolledPosition(point),
2565                                                 this, flags, 0);
2566     if (hit == NULL)
2567     {
2568         flags = wxTREE_HITTEST_NOWHERE;
2569         return wxTreeItemId();
2570     }
2571     return hit;
2572 }
2573
2574 // get the bounding rectangle of the item (or of its label only)
2575 bool wxGenericTreeCtrl::GetBoundingRect(const wxTreeItemId& item,
2576                          wxRect& rect,
2577                          bool WXUNUSED(textOnly)) const
2578 {
2579     wxCHECK_MSG( item.IsOk(), FALSE, _T("invalid item in wxGenericTreeCtrl::GetBoundingRect") );
2580
2581     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
2582
2583     int startX, startY;
2584     GetViewStart(& startX, & startY);
2585
2586     rect.x = i->GetX() - startX*PIXELS_PER_UNIT;
2587     rect.y = i->GetY() - startY*PIXELS_PER_UNIT;
2588     rect.width = i->GetWidth();
2589     //rect.height = i->GetHeight();
2590     rect.height = GetLineHeight(i);
2591
2592     return TRUE;
2593 }
2594
2595 /* **** */
2596
2597 void wxGenericTreeCtrl::Edit( const wxTreeItemId& item )
2598 {
2599     if (!item.IsOk()) return;
2600
2601     m_currentEdit = (wxGenericTreeItem*) item.m_pItem;
2602
2603     wxTreeEvent te( wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT, GetId() );
2604     te.m_item = (long) m_currentEdit;
2605     te.SetEventObject( this );
2606     GetEventHandler()->ProcessEvent( te );
2607
2608     if (!te.IsAllowed()) return;
2609
2610     // We have to call this here because the label in
2611     // question might just have been added and no screen
2612     // update taken place.
2613     if (m_dirty) wxYieldIfNeeded();
2614
2615     wxString s = m_currentEdit->GetText();
2616     int w = m_currentEdit->GetWidth();
2617     int h = m_currentEdit->GetHeight();
2618     int x, y;
2619     CalcScrolledPosition(m_currentEdit->GetX(), m_currentEdit->GetY(), &x, &y);
2620
2621     int image_h = 0;
2622     int image_w = 0;
2623
2624     int image = m_currentEdit->GetCurrentImage();
2625     if ( image != NO_IMAGE )
2626     {
2627         if ( m_imageListNormal )
2628         {
2629             m_imageListNormal->GetSize( image, image_w, image_h );
2630             image_w += 4;
2631         }
2632         else
2633         {
2634             wxFAIL_MSG(_T("you must create an image list to use images!"));
2635         }
2636     }
2637     x += image_w;
2638     w -= image_w + 4; // I don't know why +4 is needed
2639
2640     wxTreeTextCtrl *text = new wxTreeTextCtrl(this, -1,
2641                                               &m_renameAccept,
2642                                               &m_renameRes,
2643                                               this,
2644                                               s,
2645                                               wxPoint(x-4,y-4),
2646                                               wxSize(w+11,h+8));
2647     text->SetFocus();
2648 }
2649
2650 void wxGenericTreeCtrl::OnRenameTimer()
2651 {
2652     Edit( m_current );
2653 }
2654
2655 void wxGenericTreeCtrl::OnRenameAccept()
2656 {
2657     // TODO if the validator fails this causes a crash
2658     wxTreeEvent le( wxEVT_COMMAND_TREE_END_LABEL_EDIT, GetId() );
2659     le.m_item = (long) m_currentEdit;
2660     le.SetEventObject( this );
2661     le.m_label = m_renameRes;
2662     GetEventHandler()->ProcessEvent( le );
2663
2664     if (!le.IsAllowed()) return;
2665
2666     SetItemText( m_currentEdit, m_renameRes );
2667 }
2668
2669 void wxGenericTreeCtrl::OnMouse( wxMouseEvent &event )
2670 {
2671     if ( !m_anchor ) return;
2672
2673     // we process left mouse up event (enables in-place edit), right down
2674     // (pass to the user code), left dbl click (activate item) and
2675     // dragging/moving events for items drag-and-drop
2676     if ( !(event.LeftDown() ||
2677            event.LeftUp() ||
2678            event.RightDown() ||
2679            event.LeftDClick() ||
2680            event.Dragging() ||
2681            ((event.Moving() || event.RightUp()) && m_isDragging)) )
2682     {
2683         event.Skip();
2684
2685         return;
2686     }
2687
2688     wxPoint pt = CalcUnscrolledPosition(event.GetPosition());
2689
2690     int flags = 0;
2691     wxGenericTreeItem *item = m_anchor->HitTest(pt, this, flags, 0);
2692
2693     if ( event.Dragging() && !m_isDragging )
2694     {
2695         if (m_dragCount == 0)
2696             m_dragStart = pt;
2697
2698         m_dragCount++;
2699
2700         if (m_dragCount != 3)
2701         {
2702             // wait until user drags a bit further...
2703             return;
2704         }
2705
2706         wxEventType command = event.RightIsDown()
2707                               ? wxEVT_COMMAND_TREE_BEGIN_RDRAG
2708                               : wxEVT_COMMAND_TREE_BEGIN_DRAG;
2709
2710         wxTreeEvent nevent( command, GetId() );
2711         nevent.m_item = (long) m_current;
2712         nevent.SetEventObject(this);
2713
2714         // by default the dragging is not supported, the user code must
2715         // explicitly allow the event for it to take place
2716         nevent.Veto();
2717
2718         if ( GetEventHandler()->ProcessEvent(nevent) && nevent.IsAllowed() )
2719         {
2720             // we're going to drag this item
2721             m_isDragging = TRUE;
2722
2723             // remember the old cursor because we will change it while
2724             // dragging
2725             m_oldCursor = m_cursor;
2726
2727             // in a single selection control, hide the selection temporarily
2728             if ( !(GetWindowStyleFlag() & wxTR_MULTIPLE) )
2729             {
2730                 m_oldSelection = (wxGenericTreeItem*) GetSelection().m_pItem;
2731
2732                 if ( m_oldSelection )
2733                 {
2734                     m_oldSelection->SetHilight(FALSE);
2735                     RefreshLine(m_oldSelection);
2736                 }
2737             }
2738
2739             CaptureMouse();
2740         }
2741     }
2742     else if ( event.Moving() )
2743     {
2744         if ( item != m_dropTarget )
2745         {
2746             // unhighlight the previous drop target
2747             DrawDropEffect(m_dropTarget);
2748
2749             m_dropTarget = item;
2750
2751             // highlight the current drop target if any
2752             DrawDropEffect(m_dropTarget);
2753
2754             wxYieldIfNeeded();
2755         }
2756     }
2757     else if ( (event.LeftUp() || event.RightUp()) && m_isDragging )
2758     {
2759         // erase the highlighting
2760         DrawDropEffect(m_dropTarget);
2761
2762         if ( m_oldSelection )
2763         {
2764             m_oldSelection->SetHilight(TRUE);
2765             RefreshLine(m_oldSelection);
2766             m_oldSelection = (wxGenericTreeItem *)NULL;
2767         }
2768
2769         // generate the drag end event
2770         wxTreeEvent event(wxEVT_COMMAND_TREE_END_DRAG, GetId());
2771
2772         event.m_item = (long) item;
2773         event.m_pointDrag = pt;
2774         event.SetEventObject(this);
2775
2776         (void)GetEventHandler()->ProcessEvent(event);
2777
2778         m_isDragging = FALSE;
2779         m_dropTarget = (wxGenericTreeItem *)NULL;
2780
2781         ReleaseMouse();
2782
2783         SetCursor(m_oldCursor);
2784
2785         wxYieldIfNeeded();
2786     }
2787     else
2788     {
2789         // here we process only the messages which happen on tree items
2790
2791         m_dragCount = 0;
2792
2793         if (item == NULL) return;  /* we hit the blank area */
2794
2795         if ( event.RightDown() )
2796         {
2797             wxTreeEvent nevent(wxEVT_COMMAND_TREE_ITEM_RIGHT_CLICK, GetId());
2798             nevent.m_item = (long) item;
2799             nevent.m_pointDrag = CalcScrolledPosition(pt);
2800             nevent.SetEventObject(this);
2801             GetEventHandler()->ProcessEvent(nevent);
2802         }
2803         else if ( event.LeftUp() )
2804         {
2805             if ( m_lastOnSame )
2806             {
2807                 if ( (item == m_current) &&
2808                      (flags & wxTREE_HITTEST_ONITEMLABEL) &&
2809                      HasFlag(wxTR_EDIT_LABELS) )
2810                 {
2811                     if ( m_renameTimer->IsRunning() )
2812                         m_renameTimer->Stop();
2813
2814                     m_renameTimer->Start( 100, TRUE );
2815                 }
2816
2817                 m_lastOnSame = FALSE;
2818             }
2819         }
2820         else // !RightDown() && !LeftUp() ==> LeftDown() || LeftDClick()
2821         {
2822             if ( event.LeftDown() )
2823             {
2824                 m_lastOnSame = item == m_current;
2825             }
2826
2827             if ( flags & wxTREE_HITTEST_ONITEMBUTTON )
2828             {
2829                 // only toggle the item for a single click, double click on
2830                 // the button doesn't do anything (it toggles the item twice)
2831                 if ( event.LeftDown() )
2832                 {
2833                     Toggle( item );
2834                 }
2835
2836                 // don't select the item if the button was clicked
2837                 return;
2838             }
2839
2840             // how should the selection work for this event?
2841             bool is_multiple, extended_select, unselect_others;
2842             EventFlagsToSelType(GetWindowStyleFlag(),
2843                                 event.ShiftDown(),
2844                                 event.ControlDown(),
2845                                 is_multiple, extended_select, unselect_others);
2846
2847             SelectItem(item, unselect_others, extended_select);
2848
2849             // For some reason, Windows isn't recognizing a left double-click,
2850             // so we need to simulate it here.  Allow 200 milliseconds for now.
2851             if ( event.LeftDClick() )
2852             {
2853                 // double clicking should not start editing the item label
2854                 m_renameTimer->Stop();
2855                 m_lastOnSame = FALSE;
2856
2857                 // send activate event first
2858                 wxTreeEvent nevent( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
2859                 nevent.m_item = (long) item;
2860                 nevent.m_pointDrag = CalcScrolledPosition(pt);
2861                 nevent.SetEventObject( this );
2862                 if ( !GetEventHandler()->ProcessEvent( nevent ) )
2863                 {
2864                     // if the user code didn't process the activate event,
2865                     // handle it ourselves by toggling the item when it is
2866                     // double clicked
2867                     if ( item->HasPlus() )
2868                     {
2869                         Toggle(item);
2870                     }
2871                 }
2872             }
2873         }
2874     }
2875 }
2876
2877 void wxGenericTreeCtrl::OnIdle( wxIdleEvent &WXUNUSED(event) )
2878 {
2879     /* after all changes have been done to the tree control,
2880      * we actually redraw the tree when everything is over */
2881
2882     if (!m_dirty) return;
2883
2884     m_dirty = FALSE;
2885
2886     CalculatePositions();
2887     Refresh();
2888     AdjustMyScrollbars();
2889 }
2890
2891 void wxGenericTreeCtrl::CalculateSize( wxGenericTreeItem *item, wxDC &dc )
2892 {
2893     wxCoord text_w = 0;
2894     wxCoord text_h = 0;
2895
2896     wxTreeItemAttr *attr = item->GetAttributes();
2897     if ( attr && attr->HasFont() )
2898         dc.SetFont(attr->GetFont());
2899     else if ( item->IsBold() )
2900         dc.SetFont(m_boldFont);
2901
2902     dc.GetTextExtent( item->GetText(), &text_w, &text_h );
2903     text_h+=2;
2904
2905     // restore normal font
2906     dc.SetFont( m_normalFont );
2907
2908     int image_h = 0;
2909     int image_w = 0;
2910     int image = item->GetCurrentImage();
2911     if ( image != NO_IMAGE )
2912     {
2913         if ( m_imageListNormal )
2914         {
2915             m_imageListNormal->GetSize( image, image_w, image_h );
2916             image_w += 4;
2917         }
2918     }
2919
2920     int total_h = (image_h > text_h) ? image_h : text_h;
2921
2922     if (total_h < 30)
2923         total_h += 2;            // at least 2 pixels
2924     else
2925         total_h += total_h/10;   // otherwise 10% extra spacing
2926
2927     item->SetHeight(total_h);
2928     if (total_h>m_lineHeight)
2929         m_lineHeight=total_h;
2930
2931     item->SetWidth(image_w+text_w+2);
2932 }
2933
2934 // -----------------------------------------------------------------------------
2935 // for developper : y is now the top of the level
2936 // not the middle of it !
2937 void wxGenericTreeCtrl::CalculateLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y )
2938 {
2939     int x = level*m_indent;
2940     if (!HasFlag(wxTR_HIDE_ROOT))
2941     {
2942         x += m_indent;
2943     }
2944     else if (level == 0)
2945     {
2946         // a hidden root is not evaluated, but its
2947         // children are always calculated
2948         goto Recurse;
2949     }
2950
2951     CalculateSize( item, dc );
2952
2953     // set its position
2954     item->SetX( x+m_spacing );
2955     item->SetY( y );
2956     y += GetLineHeight(item);
2957
2958     if ( !item->IsExpanded() )
2959     {
2960         // we don't need to calculate collapsed branches
2961         return;
2962     }
2963
2964   Recurse:
2965     wxArrayGenericTreeItems& children = item->GetChildren();
2966     size_t n, count = children.Count();
2967     ++level;
2968     for (n = 0; n < count; ++n )
2969         CalculateLevel( children[n], dc, level, y );  // recurse
2970 }
2971
2972 void wxGenericTreeCtrl::CalculatePositions()
2973 {
2974     if ( !m_anchor ) return;
2975
2976     wxClientDC dc(this);
2977     PrepareDC( dc );
2978
2979     dc.SetFont( m_normalFont );
2980
2981     dc.SetPen( m_dottedPen );
2982     //if(GetImageList() == NULL)
2983     // m_lineHeight = (int)(dc.GetCharHeight() + 4);
2984
2985     int y = 2;
2986     CalculateLevel( m_anchor, dc, 0, y ); // start recursion
2987 }
2988
2989 void wxGenericTreeCtrl::RefreshSubtree(wxGenericTreeItem *item)
2990 {
2991     if (m_dirty) return;
2992
2993     wxSize client = GetClientSize();
2994
2995     wxRect rect;
2996     CalcScrolledPosition(0, item->GetY(), &rect.x, &rect.y);
2997     rect.width = client.x;
2998     rect.height = client.y;
2999
3000     Refresh(TRUE, &rect);
3001
3002     AdjustMyScrollbars();
3003 }
3004
3005 void wxGenericTreeCtrl::RefreshLine( wxGenericTreeItem *item )
3006 {
3007     if (m_dirty) return;
3008
3009     wxRect rect;
3010     CalcScrolledPosition(0, item->GetY(), &rect.x, &rect.y);
3011     rect.width = GetClientSize().x;
3012     rect.height = GetLineHeight(item); //dc.GetCharHeight() + 6;
3013
3014     Refresh(TRUE, &rect);
3015 }
3016
3017 void wxGenericTreeCtrl::RefreshSelected()
3018 {
3019     // TODO: this is awfully inefficient, we should keep the list of all
3020     //       selected items internally, should be much faster
3021     if ( m_anchor )
3022         RefreshSelectedUnder(m_anchor);
3023 }
3024
3025 void wxGenericTreeCtrl::RefreshSelectedUnder(wxGenericTreeItem *item)
3026 {
3027     if ( item->IsSelected() )
3028         RefreshLine(item);
3029
3030     const wxArrayGenericTreeItems& children = item->GetChildren();
3031     size_t count = children.GetCount();
3032     for ( size_t n = 0; n < count; n++ )
3033     {
3034         RefreshSelectedUnder(children[n]);
3035     }
3036 }
3037
3038 // ----------------------------------------------------------------------------
3039 // changing colours: we need to refresh the tree control
3040 // ----------------------------------------------------------------------------
3041
3042 bool wxGenericTreeCtrl::SetBackgroundColour(const wxColour& colour)
3043 {
3044     if ( !wxWindow::SetBackgroundColour(colour) )
3045         return FALSE;
3046
3047     Refresh();
3048
3049     return TRUE;
3050 }
3051
3052 bool wxGenericTreeCtrl::SetForegroundColour(const wxColour& colour)
3053 {
3054     if ( !wxWindow::SetForegroundColour(colour) )
3055         return FALSE;
3056
3057     Refresh();
3058
3059     return TRUE;
3060 }
3061
3062 #endif // wxUSE_TREECTRL