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
  49 // ----------------------------------------------------------------------------
  50 // constants
  51 // ----------------------------------------------------------------------------
  52
  53 static const int NO_IMAGE = -1;
  54
  55 static const int PIXELS_PER_UNIT = 10;
  56
  57 // ----------------------------------------------------------------------------
  58 // Aqua arrows
  59 // ----------------------------------------------------------------------------
  60
  61 /* XPM */
  62 static const char *aqua_arrow_right[] = {
  63 /* columns rows colors chars-per-pixel */
  64 "13 11 4 1",
  65 "  c None",
  66 "b c #C0C0C0",
  67 "c c #707070",
  68 "d c #A0A0A0",
  69 /* pixels */
  70 "    b        ",
  71 "    ddb      ",
  72 "    cccdb    ",
  73 "    cccccd   ",
  74 "    ccccccdb ",
  75 "    ccccccccd",
  76 "    ccccccdb ",
  77 "    cccccb   ",
  78 "    cccdb    ",
  79 "    ddb      ",
  80 "    b        "
  81 };
  82
  83 /* XPM */
  84 static const char *aqua_arrow_down[] = {
  85 /* columns rows colors chars-per-pixel */
  86 "13 11 4 1",
  87 "  c None",
  88 "b c #C0C0C0",
  89 "c c #707070",
  90 "d c #A0A0A0",
  91 /* pixels */
  92 "             ",
  93 "             ",
  94 " bdcccccccdb ",
  95 "  dcccccccd  ",
  96 "  bcccccccb  ",
  97 "   dcccccd   ",
  98 "   bcccccb   ",
  99 "    bcccd    ",
 100 "     dcd     ",
 101 "     bcb     ",
 102 "      d      "
 103 };
 104
 105 // -----------------------------------------------------------------------------
 106 // private classes
 107 // -----------------------------------------------------------------------------
 108
 109 // timer used for enabling in-place edit
 110 class WXDLLEXPORT wxTreeRenameTimer: public wxTimer
 111 {
 112 public:
 113     // start editing the current item after half a second (if the mouse hasn't
 114     // been clicked/moved)
 115     enum { DELAY = 500 };
 116
 117     wxTreeRenameTimer( wxGenericTreeCtrl *owner );
 118
 119     virtual void Notify();
 120
 121 private:
 122     wxGenericTreeCtrl *m_owner;
 123 };
 124
 125 // control used for in-place edit
 126 class WXDLLEXPORT wxTreeTextCtrl: public wxTextCtrl
 127 {
 128 public:
 129     wxTreeTextCtrl(wxGenericTreeCtrl *owner, wxGenericTreeItem *item);
 130
 131 protected:
 132     void OnChar( wxKeyEvent &event );
 133     void OnKeyUp( wxKeyEvent &event );
 134     void OnKillFocus( wxFocusEvent &event );
 135
 136     bool AcceptChanges();
 137     void Finish();
 138
 139 private:
 140     wxGenericTreeCtrl  *m_owner;
 141     wxGenericTreeItem  *m_itemEdited;
 142     wxString            m_startValue;
 143     bool                m_finished;
 144
 145     DECLARE_EVENT_TABLE()
 146 };
 147
 148 // timer used to clear wxGenericTreeCtrl::m_findPrefix if no key was pressed
 149 // for a sufficiently long time
 150 class WXDLLEXPORT wxTreeFindTimer : public wxTimer
 151 {
 152 public:
 153     // reset the current prefix after half a second of inactivity
 154     enum { DELAY = 500 };
 155
 156     wxTreeFindTimer( wxGenericTreeCtrl *owner ) { m_owner = owner; }
 157
 158     virtual void Notify() { m_owner->m_findPrefix.clear(); }
 159
 160 private:
 161     wxGenericTreeCtrl *m_owner;
 162 };
 163
 164 // a tree item
 165 class WXDLLEXPORT wxGenericTreeItem
 166 {
 167 public:
 168     // ctors & dtor
 169     wxGenericTreeItem() { m_data = NULL; }
 170     wxGenericTreeItem( wxGenericTreeItem *parent,
 171                        const wxString& text,
 172                        int image,
 173                        int selImage,
 174                        wxTreeItemData *data );
 175
 176     ~wxGenericTreeItem();
 177
 178     // trivial accessors
 179     wxArrayGenericTreeItems& GetChildren() { return m_children; }
 180
 181     const wxString& GetText() const { return m_text; }
 182     int GetImage(wxTreeItemIcon which = wxTreeItemIcon_Normal) const
 183         { return m_images[which]; }
 184     wxTreeItemData *GetData() const { return m_data; }
 185
 186     // returns the current image for the item (depending on its
 187     // selected/expanded/whatever state)
 188     int GetCurrentImage() const;
 189
 190     void SetText( const wxString &text );
 191     void SetImage(int image, wxTreeItemIcon which) { m_images[which] = image; }
 192     void SetData(wxTreeItemData *data) { m_data = data; }
 193
 194     void SetHasPlus(bool has = TRUE) { m_hasPlus = has; }
 195
 196     void SetBold(bool bold) { m_isBold = bold; }
 197
 198     int GetX() const { return m_x; }
 199     int GetY() const { return m_y; }
 200
 201     void SetX(int x) { m_x = x; }
 202     void SetY(int y) { m_y = y; }
 203
 204     int  GetHeight() const { return m_height; }
 205     int  GetWidth()  const { return m_width; }
 206
 207     void SetHeight(int h) { m_height = h; }
 208     void SetWidth(int w) { m_width = w; }
 209
 210     wxGenericTreeItem *GetParent() const { return m_parent; }
 211
 212     // operations
 213         // deletes all children notifying the treectrl about it if !NULL
 214         // pointer given
 215     void DeleteChildren(wxGenericTreeCtrl *tree = NULL);
 216
 217     // get count of all children (and grand children if 'recursively')
 218     size_t GetChildrenCount(bool recursively = TRUE) const;
 219
 220     void Insert(wxGenericTreeItem *child, size_t index)
 221     { m_children.Insert(child, index); }
 222
 223     void GetSize( int &x, int &y, const wxGenericTreeCtrl* );
 224
 225         // return the item at given position (or NULL if no item), onButton is
 226         // TRUE if the point belongs to the item's button, otherwise it lies
 227         // on the button's label
 228     wxGenericTreeItem *HitTest( const wxPoint& point,
 229                                 const wxGenericTreeCtrl *,
 230                                 int &flags,
 231                                 int level );
 232
 233     void Expand() { m_isCollapsed = FALSE; }
 234     void Collapse() { m_isCollapsed = TRUE; }
 235
 236     void SetHilight( bool set = TRUE ) { m_hasHilight = set; }
 237
 238     // status inquiries
 239     bool HasChildren() const { return !m_children.IsEmpty(); }
 240     bool IsSelected()  const { return m_hasHilight != 0; }
 241     bool IsExpanded()  const { return !m_isCollapsed; }
 242     bool HasPlus()     const { return m_hasPlus || HasChildren(); }
 243     bool IsBold()      const { return m_isBold != 0; }
 244
 245     // attributes
 246         // get them - may be NULL
 247     wxTreeItemAttr *GetAttributes() const { return m_attr; }
 248         // get them ensuring that the pointer is not NULL
 249     wxTreeItemAttr& Attr()
 250     {
 251         if ( !m_attr )
 252         {
 253             m_attr = new wxTreeItemAttr;
 254             m_ownsAttr = TRUE;
 255         }
 256         return *m_attr;
 257     }
 258         // set them
 259     void SetAttributes(wxTreeItemAttr *attr)
 260     {
 261         if ( m_ownsAttr ) delete m_attr;
 262         m_attr = attr;
 263         m_ownsAttr = FALSE;
 264     }
 265         // set them and delete when done
 266     void AssignAttributes(wxTreeItemAttr *attr)
 267     {
 268         SetAttributes(attr);
 269         m_ownsAttr = TRUE;
 270     }
 271
 272 private:
 273     // since there can be very many of these, we save size by chosing
 274     // the smallest representation for the elements and by ordering
 275     // the members to avoid padding.
 276     wxString            m_text;         // label to be rendered for item
 277
 278     wxTreeItemData     *m_data;         // user-provided data
 279
 280     wxArrayGenericTreeItems m_children; // list of children
 281     wxGenericTreeItem  *m_parent;       // parent of this item
 282
 283     wxTreeItemAttr     *m_attr;         // attributes???
 284
 285     // tree ctrl images for the normal, selected, expanded and
 286     // expanded+selected states
 287     short               m_images[wxTreeItemIcon_Max];
 288
 289     wxCoord             m_x;            // (virtual) offset from top
 290     short               m_y;            // (virtual) offset from left
 291     short               m_width;        // width of this item
 292     unsigned char       m_height;       // height of this item
 293
 294     // use bitfields to save size
 295     int                 m_isCollapsed :1;
 296     int                 m_hasHilight  :1; // same as focused
 297     int                 m_hasPlus     :1; // used for item which doesn't have
 298                                           // children but has a [+] button
 299     int                 m_isBold      :1; // render the label in bold font
 300     int                 m_ownsAttr    :1; // delete attribute when done
 301 };
 302
 303 // =============================================================================
 304 // implementation
 305 // =============================================================================
 306
 307 // ----------------------------------------------------------------------------
 308 // private functions
 309 // ----------------------------------------------------------------------------
 310
 311 // translate the key or mouse event flags to the type of selection we're
 312 // dealing with
 313 static void EventFlagsToSelType(long style,
 314                                 bool shiftDown,
 315                                 bool ctrlDown,
 316                                 bool &is_multiple,
 317                                 bool &extended_select,
 318                                 bool &unselect_others)
 319 {
 320     is_multiple = (style & wxTR_MULTIPLE) != 0;
 321     extended_select = shiftDown && is_multiple;
 322     unselect_others = !(extended_select || (ctrlDown && is_multiple));
 323 }
 324
 325 // check if the given item is under another one
 326 static bool IsDescendantOf(wxGenericTreeItem *parent, wxGenericTreeItem *item)
 327 {
 328     while ( item )
 329     {
 330         if ( item == parent )
 331         {
 332             // item is a descendant of parent
 333             return TRUE;
 334         }
 335
 336         item = item->GetParent();
 337     }
 338
 339     return FALSE;
 340 }
 341
 342 // -----------------------------------------------------------------------------
 343 // wxTreeRenameTimer (internal)
 344 // -----------------------------------------------------------------------------
 345
 346 wxTreeRenameTimer::wxTreeRenameTimer( wxGenericTreeCtrl *owner )
 347 {
 348     m_owner = owner;
 349 }
 350
 351 void wxTreeRenameTimer::Notify()
 352 {
 353     m_owner->OnRenameTimer();
 354 }
 355
 356 //-----------------------------------------------------------------------------
 357 // wxTreeTextCtrl (internal)
 358 //-----------------------------------------------------------------------------
 359
 360 BEGIN_EVENT_TABLE(wxTreeTextCtrl,wxTextCtrl)
 361     EVT_CHAR           (wxTreeTextCtrl::OnChar)
 362     EVT_KEY_UP         (wxTreeTextCtrl::OnKeyUp)
 363     EVT_KILL_FOCUS     (wxTreeTextCtrl::OnKillFocus)
 364 END_EVENT_TABLE()
 365
 366 wxTreeTextCtrl::wxTreeTextCtrl(wxGenericTreeCtrl *owner,
 367                                wxGenericTreeItem *item)
 368               : m_itemEdited(item), m_startValue(item->GetText())
 369 {
 370     m_owner = owner;
 371     m_finished = FALSE;
 372
 373     int w = m_itemEdited->GetWidth(),
 374         h = m_itemEdited->GetHeight();
 375
 376     int x, y;
 377     m_owner->CalcScrolledPosition(item->GetX(), item->GetY(), &x, &y);
 378
 379     int image_h = 0,
 380         image_w = 0;
 381
 382     int image = item->GetCurrentImage();
 383     if ( image != NO_IMAGE )
 384     {
 385         if ( m_owner->m_imageListNormal )
 386         {
 387             m_owner->m_imageListNormal->GetSize( image, image_w, image_h );
 388             image_w += 4;
 389         }
 390         else
 391         {
 392             wxFAIL_MSG(_T("you must create an image list to use images!"));
 393         }
 394     }
 395
 396     // FIXME: what are all these hardcoded 4, 8 and 11s really?
 397     x += image_w;
 398     w -= image_w + 4;
 399
 400     (void)Create(m_owner, wxID_ANY, m_startValue,
 401                  wxPoint(x - 4, y - 4), wxSize(w + 11, h + 8));
 402 }
 403
 404 bool wxTreeTextCtrl::AcceptChanges()
 405 {
 406     const wxString value = GetValue();
 407
 408     if ( value == m_startValue )
 409     {
 410         // nothing changed, always accept
 411         return TRUE;
 412     }
 413
 414     if ( !m_owner->OnRenameAccept(m_itemEdited, value) )
 415     {
 416         // vetoed by the user
 417         return FALSE;
 418     }
 419
 420     // accepted, do rename the item
 421     m_owner->SetItemText(m_itemEdited, value);
 422
 423     return TRUE;
 424 }
 425
 426 void wxTreeTextCtrl::Finish()
 427 {
 428     if ( !m_finished )
 429     {
 430         wxPendingDelete.Append(this);
 431
 432         m_finished = TRUE;
 433
 434         m_owner->SetFocus(); // This doesn't work. TODO.
 435     }
 436 }
 437
 438 void wxTreeTextCtrl::OnChar( wxKeyEvent &event )
 439 {
 440     switch ( event.m_keyCode )
 441     {
 442         case WXK_RETURN:
 443             if ( !AcceptChanges() )
 444             {
 445                 // vetoed by the user, don't disappear
 446                 break;
 447             }
 448             //else: fall through
 449
 450         case WXK_ESCAPE:
 451             Finish();
 452             break;
 453
 454         default:
 455             event.Skip();
 456     }
 457 }
 458
 459 void wxTreeTextCtrl::OnKeyUp( wxKeyEvent &event )
 460 {
 461     if ( !m_finished )
 462     {
 463         // auto-grow the textctrl:
 464         wxSize parentSize = m_owner->GetSize();
 465         wxPoint myPos = GetPosition();
 466         wxSize mySize = GetSize();
 467         int sx, sy;
 468         GetTextExtent(GetValue() + _T("M"), &sx, &sy);
 469         if (myPos.x + sx > parentSize.x)
 470             sx = parentSize.x - myPos.x;
 471         if (mySize.x > sx)
 472             sx = mySize.x;
 473         SetSize(sx, -1);
 474     }
 475
 476     event.Skip();
 477 }
 478
 479 void wxTreeTextCtrl::OnKillFocus( wxFocusEvent &event )
 480 {
 481     if ( m_finished )
 482     {
 483         event.Skip();
 484         return;
 485     }
 486
 487     if ( AcceptChanges() )
 488     {
 489         Finish();
 490     }
 491 }
 492
 493 // -----------------------------------------------------------------------------
 494 // wxGenericTreeItem
 495 // -----------------------------------------------------------------------------
 496
 497 wxGenericTreeItem::wxGenericTreeItem(wxGenericTreeItem *parent,
 498                                      const wxString& text,
 499                                      int image, int selImage,
 500                                      wxTreeItemData *data)
 501                  : m_text(text)
 502 {
 503     m_images[wxTreeItemIcon_Normal] = image;
 504     m_images[wxTreeItemIcon_Selected] = selImage;
 505     m_images[wxTreeItemIcon_Expanded] = NO_IMAGE;
 506     m_images[wxTreeItemIcon_SelectedExpanded] = NO_IMAGE;
 507
 508     m_data = data;
 509     m_x = m_y = 0;
 510
 511     m_isCollapsed = TRUE;
 512     m_hasHilight = FALSE;
 513     m_hasPlus = FALSE;
 514     m_isBold = FALSE;
 515
 516     m_parent = parent;
 517
 518     m_attr = (wxTreeItemAttr *)NULL;
 519     m_ownsAttr = FALSE;
 520
 521     // We don't know the height here yet.
 522     m_width = 0;
 523     m_height = 0;
 524 }
 525
 526 wxGenericTreeItem::~wxGenericTreeItem()
 527 {
 528     delete m_data;
 529
 530     if (m_ownsAttr) delete m_attr;
 531
 532     wxASSERT_MSG( m_children.IsEmpty(),
 533                   wxT("please call DeleteChildren() before deleting the item") );
 534 }
 535
 536 void wxGenericTreeItem::DeleteChildren(wxGenericTreeCtrl *tree)
 537 {
 538     size_t count = m_children.Count();
 539     for ( size_t n = 0; n < count; n++ )
 540     {
 541         wxGenericTreeItem *child = m_children[n];
 542         if (tree)
 543             tree->SendDeleteEvent(child);
 544
 545         child->DeleteChildren(tree);
 546         delete child;
 547     }
 548
 549     m_children.Empty();
 550 }
 551
 552 void wxGenericTreeItem::SetText( const wxString &text )
 553 {
 554     m_text = text;
 555 }
 556
 557 size_t wxGenericTreeItem::GetChildrenCount(bool recursively) const
 558 {
 559     size_t count = m_children.Count();
 560     if ( !recursively )
 561         return count;
 562
 563     size_t total = count;
 564     for (size_t n = 0; n < count; ++n)
 565     {
 566         total += m_children[n]->GetChildrenCount();
 567     }
 568
 569     return total;
 570 }
 571
 572 void wxGenericTreeItem::GetSize( int &x, int &y,
 573                                  const wxGenericTreeCtrl *theButton )
 574 {
 575     int bottomY=m_y+theButton->GetLineHeight(this);
 576     if ( y < bottomY ) y = bottomY;
 577     int width = m_x +  m_width;
 578     if ( x < width ) x = width;
 579
 580     if (IsExpanded())
 581     {
 582         size_t count = m_children.Count();
 583         for ( size_t n = 0; n < count; ++n )
 584         {
 585             m_children[n]->GetSize( x, y, theButton );
 586         }
 587     }
 588 }
 589
 590 wxGenericTreeItem *wxGenericTreeItem::HitTest(const wxPoint& point,
 591                                               const wxGenericTreeCtrl *theCtrl,
 592                                               int &flags,
 593                                               int level)
 594 {
 595     // for a hidden root node, don't evaluate it, but do evaluate children
 596     if ( !(level == 0 && theCtrl->HasFlag(wxTR_HIDE_ROOT)) )
 597     {
 598         // evaluate the item
 599         int h = theCtrl->GetLineHeight(this);
 600         if ((point.y > m_y) && (point.y < m_y + h))
 601         {
 602             int y_mid = m_y + h/2;
 603             if (point.y < y_mid )
 604                 flags |= wxTREE_HITTEST_ONITEMUPPERPART;
 605             else
 606                 flags |= wxTREE_HITTEST_ONITEMLOWERPART;
 607
 608             // 5 is the size of the plus sign
 609             int xCross = m_x - theCtrl->GetSpacing();
 610             if ((point.x > xCross-5) && (point.x < xCross+5) &&
 611                 (point.y > y_mid-5) && (point.y < y_mid+5) &&
 612                 HasPlus() && theCtrl->HasButtons() )
 613             {
 614                 flags |= wxTREE_HITTEST_ONITEMBUTTON;
 615                 return this;
 616             }
 617
 618             if ((point.x >= m_x) && (point.x <= m_x+m_width))
 619             {
 620                 int image_w = -1;
 621                 int image_h;
 622
 623                 // assuming every image (normal and selected) has the same size!
 624                 if ( (GetImage() != NO_IMAGE) && theCtrl->m_imageListNormal )
 625                     theCtrl->m_imageListNormal->GetSize(GetImage(),
 626                                                         image_w, image_h);
 627
 628                 if ((image_w != -1) && (point.x <= m_x + image_w + 1))
 629                     flags |= wxTREE_HITTEST_ONITEMICON;
 630                 else
 631                     flags |= wxTREE_HITTEST_ONITEMLABEL;
 632
 633                 return this;
 634             }
 635
 636             if (point.x < m_x)
 637                 flags |= wxTREE_HITTEST_ONITEMINDENT;
 638             if (point.x > m_x+m_width)
 639                 flags |= wxTREE_HITTEST_ONITEMRIGHT;
 640
 641             return this;
 642         }
 643
 644         // if children are expanded, fall through to evaluate them
 645         if (m_isCollapsed) return (wxGenericTreeItem*) NULL;
 646     }
 647
 648     // evaluate children
 649     size_t count = m_children.Count();
 650     for ( size_t n = 0; n < count; n++ )
 651     {
 652         wxGenericTreeItem *res = m_children[n]->HitTest( point,
 653                                                          theCtrl,
 654                                                          flags,
 655                                                          level + 1 );
 656         if ( res != NULL )
 657             return res;
 658     }
 659
 660     return (wxGenericTreeItem*) NULL;
 661 }
 662
 663 int wxGenericTreeItem::GetCurrentImage() const
 664 {
 665     int image = NO_IMAGE;
 666     if ( IsExpanded() )
 667     {
 668         if ( IsSelected() )
 669         {
 670             image = GetImage(wxTreeItemIcon_SelectedExpanded);
 671         }
 672
 673         if ( image == NO_IMAGE )
 674         {
 675             // we usually fall back to the normal item, but try just the
 676             // expanded one (and not selected) first in this case
 677             image = GetImage(wxTreeItemIcon_Expanded);
 678         }
 679     }
 680     else // not expanded
 681     {
 682         if ( IsSelected() )
 683             image = GetImage(wxTreeItemIcon_Selected);
 684     }
 685
 686     // maybe it doesn't have the specific image we want,
 687     // try the default one instead
 688     if ( image == NO_IMAGE ) image = GetImage();
 689
 690     return image;
 691 }
 692
 693 // -----------------------------------------------------------------------------
 694 // wxGenericTreeCtrl implementation
 695 // -----------------------------------------------------------------------------
 696
 697 IMPLEMENT_DYNAMIC_CLASS(wxGenericTreeCtrl, wxScrolledWindow)
 698
 699 BEGIN_EVENT_TABLE(wxGenericTreeCtrl,wxScrolledWindow)
 700     EVT_PAINT          (wxGenericTreeCtrl::OnPaint)
 701     EVT_MOUSE_EVENTS   (wxGenericTreeCtrl::OnMouse)
 702     EVT_CHAR           (wxGenericTreeCtrl::OnChar)
 703     EVT_SET_FOCUS      (wxGenericTreeCtrl::OnSetFocus)
 704     EVT_KILL_FOCUS     (wxGenericTreeCtrl::OnKillFocus)
 705     EVT_IDLE           (wxGenericTreeCtrl::OnIdle)
 706 END_EVENT_TABLE()
 707
 708 #if !defined(__WXMSW__) || defined(__WIN16__) || defined(__WXUNIVERSAL__)
 709 /*
 710  * wxTreeCtrl has to be a real class or we have problems with
 711  * the run-time information.
 712  */
 713
 714 IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxGenericTreeCtrl)
 715 #endif
 716
 717 // -----------------------------------------------------------------------------
 718 // construction/destruction
 719 // -----------------------------------------------------------------------------
 720
 721 void wxGenericTreeCtrl::Init()
 722 {
 723     m_current = m_key_current = m_anchor = (wxGenericTreeItem *) NULL;
 724     m_hasFocus = FALSE;
 725     m_dirty = FALSE;
 726
 727     m_lineHeight = 10;
 728     m_indent = 15;
 729     m_spacing = 18;
 730
 731     m_hilightBrush = new wxBrush
 732                          (
 733                             wxSystemSettings::GetColour
 734                             (
 735                                 wxSYS_COLOUR_HIGHLIGHT
 736                             ),
 737                             wxSOLID
 738                          );
 739
 740     m_hilightUnfocusedBrush = new wxBrush
 741                               (
 742                                  wxSystemSettings::GetColour
 743                                  (
 744                                      wxSYS_COLOUR_BTNSHADOW
 745                                  ),
 746                                  wxSOLID
 747                               );
 748
 749     m_imageListNormal = m_imageListButtons =
 750     m_imageListState = (wxImageList *) NULL;
 751     m_ownsImageListNormal = m_ownsImageListButtons =
 752     m_ownsImageListState = FALSE;
 753
 754     m_dragCount = 0;
 755     m_isDragging = FALSE;
 756     m_dropTarget = m_oldSelection = (wxGenericTreeItem *)NULL;
 757
 758     m_renameTimer = NULL;
 759     m_findTimer = NULL;
 760
 761     m_lastOnSame = FALSE;
 762
 763     m_normalFont = wxSystemSettings::GetFont( wxSYS_DEFAULT_GUI_FONT );
 764     m_boldFont = wxFont( m_normalFont.GetPointSize(),
 765                          m_normalFont.GetFamily(),
 766                          m_normalFont.GetStyle(),
 767                          wxBOLD,
 768                          m_normalFont.GetUnderlined());
 769 }
 770
 771 bool wxGenericTreeCtrl::Create(wxWindow *parent,
 772                                wxWindowID id,
 773                                const wxPoint& pos,
 774                                const wxSize& size,
 775                                long style,
 776                                const wxValidator &validator,
 777                                const wxString& name )
 778 {
 779 #ifdef __WXMAC__
 780     int major,minor;
 781     wxGetOsVersion( &major, &minor );
 782
 783     if (style & wxTR_HAS_BUTTONS) style |= wxTR_MAC_BUTTONS;
 784     if (style & wxTR_HAS_BUTTONS) style &= ~wxTR_HAS_BUTTONS;
 785     style &= ~wxTR_LINES_AT_ROOT;
 786     style |= wxTR_NO_LINES;
 787     if (major < 10)
 788         style |= wxTR_ROW_LINES;
 789     if (major >= 10)
 790         style |= wxTR_AQUA_BUTTONS;
 791 #endif
 792
 793     if (style & wxTR_AQUA_BUTTONS)
 794     {
 795         m_arrowRight = new wxBitmap( aqua_arrow_right );
 796         m_arrowDown = new wxBitmap( aqua_arrow_down );
 797     }
 798     else
 799     {
 800         m_arrowRight = NULL;
 801         m_arrowDown = NULL;
 802     }
 803
 804     wxScrolledWindow::Create( parent, id, pos, size,
 805                               style|wxHSCROLL|wxVSCROLL, name );
 806
 807     // If the tree display has no buttons, but does have
 808     // connecting lines, we can use a narrower layout.
 809     // It may not be a good idea to force this...
 810     if (!HasButtons() && !HasFlag(wxTR_NO_LINES))
 811     {
 812         m_indent= 10;
 813         m_spacing = 10;
 814     }
 815
 816 #if wxUSE_VALIDATORS
 817     SetValidator( validator );
 818 #endif
 819
 820     SetForegroundColour( wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT) );
 821     SetBackgroundColour( wxSystemSettings::GetColour(wxSYS_COLOUR_LISTBOX) );
 822
 823 //  m_dottedPen = wxPen( "grey", 0, wxDOT );  too slow under XFree86
 824     m_dottedPen = wxPen( wxT("grey"), 0, 0 );
 825
 826     return TRUE;
 827 }
 828
 829 wxGenericTreeCtrl::~wxGenericTreeCtrl()
 830 {
 831     delete m_hilightBrush;
 832     delete m_hilightUnfocusedBrush;
 833
 834     delete m_arrowRight;
 835     delete m_arrowDown;
 836
 837     DeleteAllItems();
 838
 839     delete m_renameTimer;
 840     delete m_findTimer;
 841
 842     if (m_ownsImageListNormal)
 843         delete m_imageListNormal;
 844     if (m_ownsImageListState)
 845         delete m_imageListState;
 846     if (m_ownsImageListButtons)
 847         delete m_imageListButtons;
 848 }
 849
 850 // -----------------------------------------------------------------------------
 851 // accessors
 852 // -----------------------------------------------------------------------------
 853
 854 size_t wxGenericTreeCtrl::GetCount() const
 855 {
 856     return m_anchor == NULL ? 0u : m_anchor->GetChildrenCount();
 857 }
 858
 859 void wxGenericTreeCtrl::SetIndent(unsigned int indent)
 860 {
 861     m_indent = (unsigned short) indent;
 862     m_dirty = TRUE;
 863 }
 864
 865 void wxGenericTreeCtrl::SetSpacing(unsigned int spacing)
 866 {
 867     m_spacing = (unsigned short) spacing;
 868     m_dirty = TRUE;
 869 }
 870
 871 size_t wxGenericTreeCtrl::GetChildrenCount(const wxTreeItemId& item, bool recursively)
 872 {
 873     wxCHECK_MSG( item.IsOk(), 0u, wxT("invalid tree item") );
 874
 875     return ((wxGenericTreeItem*) item.m_pItem)->GetChildrenCount(recursively);
 876 }
 877
 878 void wxGenericTreeCtrl::SetWindowStyle(const long styles)
 879 {
 880     if (!HasFlag(wxTR_HIDE_ROOT) && (styles & wxTR_HIDE_ROOT))
 881     {
 882         // if we will hide the root, make sure children are visible
 883         m_anchor->SetHasPlus();
 884         m_anchor->Expand();
 885         CalculatePositions();
 886     }
 887
 888     // right now, just sets the styles.  Eventually, we may
 889     // want to update the inherited styles, but right now
 890     // none of the parents has updatable styles
 891     m_windowStyle = styles;
 892     m_dirty = TRUE;
 893 }
 894
 895 // -----------------------------------------------------------------------------
 896 // functions to work with tree items
 897 // -----------------------------------------------------------------------------
 898
 899 wxString wxGenericTreeCtrl::GetItemText(const wxTreeItemId& item) const
 900 {
 901     wxCHECK_MSG( item.IsOk(), wxT(""), wxT("invalid tree item") );
 902
 903     return ((wxGenericTreeItem*) item.m_pItem)->GetText();
 904 }
 905
 906 int wxGenericTreeCtrl::GetItemImage(const wxTreeItemId& item,
 907                              wxTreeItemIcon which) const
 908 {
 909     wxCHECK_MSG( item.IsOk(), -1, wxT("invalid tree item") );
 910
 911     return ((wxGenericTreeItem*) item.m_pItem)->GetImage(which);
 912 }
 913
 914 wxTreeItemData *wxGenericTreeCtrl::GetItemData(const wxTreeItemId& item) const
 915 {
 916     wxCHECK_MSG( item.IsOk(), NULL, wxT("invalid tree item") );
 917
 918     return ((wxGenericTreeItem*) item.m_pItem)->GetData();
 919 }
 920
 921 void wxGenericTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
 922 {
 923     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 924
 925     wxClientDC dc(this);
 926     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 927     pItem->SetText(text);
 928     CalculateSize(pItem, dc);
 929     RefreshLine(pItem);
 930 }
 931
 932 void wxGenericTreeCtrl::SetItemImage(const wxTreeItemId& item,
 933                               int image,
 934                               wxTreeItemIcon which)
 935 {
 936     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 937
 938     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 939     pItem->SetImage(image, which);
 940
 941     wxClientDC dc(this);
 942     CalculateSize(pItem, dc);
 943     RefreshLine(pItem);
 944 }
 945
 946 void wxGenericTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)
 947 {
 948     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 949
 950     ((wxGenericTreeItem*) item.m_pItem)->SetData(data);
 951 }
 952
 953 void wxGenericTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
 954 {
 955     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 956
 957     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 958     pItem->SetHasPlus(has);
 959     RefreshLine(pItem);
 960 }
 961
 962 void wxGenericTreeCtrl::SetItemBold(const wxTreeItemId& item, bool bold)
 963 {
 964     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 965
 966     // avoid redrawing the tree if no real change
 967     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 968     if ( pItem->IsBold() != bold )
 969     {
 970         pItem->SetBold(bold);
 971         RefreshLine(pItem);
 972     }
 973 }
 974
 975 void wxGenericTreeCtrl::SetItemTextColour(const wxTreeItemId& item,
 976                                    const wxColour& col)
 977 {
 978     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 979
 980     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 981     pItem->Attr().SetTextColour(col);
 982     RefreshLine(pItem);
 983 }
 984
 985 void wxGenericTreeCtrl::SetItemBackgroundColour(const wxTreeItemId& item,
 986                                          const wxColour& col)
 987 {
 988     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 989
 990     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 991     pItem->Attr().SetBackgroundColour(col);
 992     RefreshLine(pItem);
 993 }
 994
 995 void wxGenericTreeCtrl::SetItemFont(const wxTreeItemId& item, const wxFont& font)
 996 {
 997     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 998
 999     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
1000     pItem->Attr().SetFont(font);
1001     RefreshLine(pItem);
1002 }
1003
1004 bool wxGenericTreeCtrl::SetFont( const wxFont &font )
1005 {
1006     wxScrolledWindow::SetFont(font);
1007
1008     m_normalFont = font ;
1009     m_boldFont = wxFont( m_normalFont.GetPointSize(),
1010                             m_normalFont.GetFamily(),
1011                             m_normalFont.GetStyle(),
1012                             wxBOLD,
1013                             m_normalFont.GetUnderlined());
1014
1015     return TRUE;
1016 }
1017
1018
1019 // -----------------------------------------------------------------------------
1020 // item status inquiries
1021 // -----------------------------------------------------------------------------
1022
1023 bool wxGenericTreeCtrl::IsVisible(const wxTreeItemId& item) const
1024 {
1025     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
1026
1027     // An item is only visible if it's not a descendant of a collapsed item
1028     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
1029     wxGenericTreeItem* parent = pItem->GetParent();
1030     while (parent)
1031     {
1032         if (!parent->IsExpanded())
1033             return FALSE;
1034         parent = parent->GetParent();
1035     }
1036
1037     int startX, startY;
1038     GetViewStart(& startX, & startY);
1039
1040     wxSize clientSize = GetClientSize();
1041
1042     wxRect rect;
1043     if (!GetBoundingRect(item, rect))
1044         return FALSE;
1045     if (rect.GetWidth() == 0 || rect.GetHeight() == 0)
1046         return FALSE;
1047     if (rect.GetBottom() < 0 || rect.GetTop() > clientSize.y)
1048         return FALSE;
1049     if (rect.GetRight() < 0 || rect.GetLeft() > clientSize.x)
1050         return FALSE;
1051
1052     return TRUE;
1053 }
1054
1055 bool wxGenericTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
1056 {
1057     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
1058
1059     // consider that the item does have children if it has the "+" button: it
1060     // might not have them (if it had never been expanded yet) but then it
1061     // could have them as well and it's better to err on this side rather than
1062     // disabling some operations which are restricted to the items with
1063     // children for an item which does have them
1064     return ((wxGenericTreeItem*) item.m_pItem)->HasPlus();
1065 }
1066
1067 bool wxGenericTreeCtrl::IsExpanded(const wxTreeItemId& item) const
1068 {
1069     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
1070
1071     return ((wxGenericTreeItem*) item.m_pItem)->IsExpanded();
1072 }
1073
1074 bool wxGenericTreeCtrl::IsSelected(const wxTreeItemId& item) const
1075 {
1076     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
1077
1078     return ((wxGenericTreeItem*) item.m_pItem)->IsSelected();
1079 }
1080
1081 bool wxGenericTreeCtrl::IsBold(const wxTreeItemId& item) const
1082 {
1083     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
1084
1085     return ((wxGenericTreeItem*) item.m_pItem)->IsBold();
1086 }
1087
1088 // -----------------------------------------------------------------------------
1089 // navigation
1090 // -----------------------------------------------------------------------------
1091
1092 wxTreeItemId wxGenericTreeCtrl::GetParent(const wxTreeItemId& item) const
1093 {
1094     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1095
1096     return ((wxGenericTreeItem*) item.m_pItem)->GetParent();
1097 }
1098
1099 wxTreeItemId wxGenericTreeCtrl::GetFirstChild(const wxTreeItemId& item, long& cookie) const
1100 {
1101     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1102
1103     cookie = 0;
1104     return GetNextChild(item, cookie);
1105 }
1106
1107 wxTreeItemId wxGenericTreeCtrl::GetNextChild(const wxTreeItemId& item, long& cookie) const
1108 {
1109     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1110
1111     wxArrayGenericTreeItems& children = ((wxGenericTreeItem*) item.m_pItem)->GetChildren();
1112     if ( (size_t)cookie < children.Count() )
1113     {
1114         return children.Item((size_t)cookie++);
1115     }
1116     else
1117     {
1118         // there are no more of them
1119         return wxTreeItemId();
1120     }
1121 }
1122
1123 wxTreeItemId wxGenericTreeCtrl::GetLastChild(const wxTreeItemId& item) const
1124 {
1125     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1126
1127     wxArrayGenericTreeItems& children = ((wxGenericTreeItem*) item.m_pItem)->GetChildren();
1128     return (children.IsEmpty() ? wxTreeItemId() : wxTreeItemId(children.Last()));
1129 }
1130
1131 wxTreeItemId wxGenericTreeCtrl::GetNextSibling(const wxTreeItemId& item) const
1132 {
1133     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1134
1135     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
1136     wxGenericTreeItem *parent = i->GetParent();
1137     if ( parent == NULL )
1138     {
1139         // root item doesn't have any siblings
1140         return wxTreeItemId();
1141     }
1142
1143     wxArrayGenericTreeItems& siblings = parent->GetChildren();
1144     int index = siblings.Index(i);
1145     wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
1146
1147     size_t n = (size_t)(index + 1);
1148     return n == siblings.Count() ? wxTreeItemId() : wxTreeItemId(siblings[n]);
1149 }
1150
1151 wxTreeItemId wxGenericTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const
1152 {
1153     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1154
1155     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
1156     wxGenericTreeItem *parent = i->GetParent();
1157     if ( parent == NULL )
1158     {
1159         // root item doesn't have any siblings
1160         return wxTreeItemId();
1161     }
1162
1163     wxArrayGenericTreeItems& siblings = parent->GetChildren();
1164     int index = siblings.Index(i);
1165     wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
1166
1167     return index == 0 ? wxTreeItemId()
1168                       : wxTreeItemId(siblings[(size_t)(index - 1)]);
1169 }
1170
1171 // Only for internal use right now, but should probably be public
1172 wxTreeItemId wxGenericTreeCtrl::GetNext(const wxTreeItemId& item) const
1173 {
1174     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1175
1176     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
1177
1178     // First see if there are any children.
1179     wxArrayGenericTreeItems& children = i->GetChildren();
1180     if (children.GetCount() > 0)
1181     {
1182          return children.Item(0);
1183     }
1184     else
1185     {
1186          // Try a sibling of this or ancestor instead
1187          wxTreeItemId p = item;
1188          wxTreeItemId toFind;
1189          do
1190          {
1191               toFind = GetNextSibling(p);
1192               p = GetParent(p);
1193          } while (p.IsOk() && !toFind.IsOk());
1194          return toFind;
1195     }
1196 }
1197
1198 wxTreeItemId wxGenericTreeCtrl::GetFirstVisibleItem() const
1199 {
1200     wxTreeItemId id = GetRootItem();
1201     if (!id.IsOk())
1202         return id;
1203
1204     do
1205     {
1206         if (IsVisible(id))
1207               return id;
1208         id = GetNext(id);
1209     } while (id.IsOk());
1210
1211     return wxTreeItemId();
1212 }
1213
1214 wxTreeItemId wxGenericTreeCtrl::GetNextVisible(const wxTreeItemId& item) const
1215 {
1216     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1217
1218     wxTreeItemId id = item;
1219     if (id.IsOk())
1220     {
1221         while (id = GetNext(id), id.IsOk())
1222         {
1223             if (IsVisible(id))
1224                 return id;
1225         }
1226     }
1227     return wxTreeItemId();
1228 }
1229
1230 wxTreeItemId wxGenericTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
1231 {
1232     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1233
1234     wxFAIL_MSG(wxT("not implemented"));
1235
1236     return wxTreeItemId();
1237 }
1238
1239 // find the first item starting with the given prefix after the given item
1240 wxTreeItemId wxGenericTreeCtrl::FindItem(const wxTreeItemId& idParent,
1241                                          const wxString& prefixOrig) const
1242 {
1243     // match is case insensitive as this is more convenient to the user: having
1244     // to press Shift-letter to go to the item starting with a capital letter
1245     // would be too bothersome
1246     wxString prefix = prefixOrig.Lower();
1247
1248     // determine the starting point: we shouldn't take the current item (this
1249     // allows to switch between two items starting with the same letter just by
1250     // pressing it) but we shouldn't jump to the next one if the user is
1251     // continuing to type as otherwise he might easily skip the item he wanted
1252     wxTreeItemId id = idParent;
1253     if ( prefix.length() == 1 )
1254     {
1255         id = GetNext(id);
1256     }
1257
1258     // look for the item starting with the given prefix after it
1259     while ( id.IsOk() && !GetItemText(id).Lower().StartsWith(prefix) )
1260     {
1261         id = GetNext(id);
1262     }
1263
1264     // if we haven't found anything...
1265     if ( !id.IsOk() )
1266     {
1267         // ... wrap to the beginning
1268         id = GetRootItem();
1269         if ( HasFlag(wxTR_HIDE_ROOT) )
1270         {
1271             // can't select virtual root
1272             id = GetNext(id);
1273         }
1274
1275         // and try all the items (stop when we get to the one we started from)
1276         while ( id != idParent && !GetItemText(id).Lower().StartsWith(prefix) )
1277         {
1278             id = GetNext(id);
1279         }
1280     }
1281
1282     return id;
1283 }
1284
1285 // -----------------------------------------------------------------------------
1286 // operations
1287 // -----------------------------------------------------------------------------
1288
1289 wxTreeItemId wxGenericTreeCtrl::DoInsertItem(const wxTreeItemId& parentId,
1290                                       size_t previous,
1291                                       const wxString& text,
1292                                       int image, int selImage,
1293                                       wxTreeItemData *data)
1294 {
1295     wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
1296     if ( !parent )
1297     {
1298         // should we give a warning here?
1299         return AddRoot(text, image, selImage, data);
1300     }
1301
1302     m_dirty = TRUE;     // do this first so stuff below doesn't cause flicker
1303
1304     wxGenericTreeItem *item =
1305         new wxGenericTreeItem( parent, text, image, selImage, data );
1306
1307     if ( data != NULL )
1308     {
1309         data->m_pItem = (long) item;
1310     }
1311
1312     parent->Insert( item, previous );
1313
1314     return item;
1315 }
1316
1317 wxTreeItemId wxGenericTreeCtrl::AddRoot(const wxString& text,
1318                                  int image, int selImage,
1319                                  wxTreeItemData *data)
1320 {
1321     wxCHECK_MSG( !m_anchor, wxTreeItemId(), wxT("tree can have only one root") );
1322
1323     m_dirty = TRUE;     // do this first so stuff below doesn't cause flicker
1324
1325     m_anchor = new wxGenericTreeItem((wxGenericTreeItem *)NULL, text,
1326                                    image, selImage, data);
1327     if ( data != NULL )
1328     {
1329         data->m_pItem = (long) m_anchor;
1330     }
1331
1332     if (HasFlag(wxTR_HIDE_ROOT))
1333     {
1334         // if root is hidden, make sure we can navigate
1335         // into children
1336         m_anchor->SetHasPlus();
1337         m_anchor->Expand();
1338         CalculatePositions();
1339     }
1340
1341     if (!HasFlag(wxTR_MULTIPLE))
1342     {
1343         m_current = m_key_current = m_anchor;
1344         m_current->SetHilight( TRUE );
1345     }
1346
1347     return m_anchor;
1348 }
1349
1350 wxTreeItemId wxGenericTreeCtrl::PrependItem(const wxTreeItemId& parent,
1351                                      const wxString& text,
1352                                      int image, int selImage,
1353                                      wxTreeItemData *data)
1354 {
1355     return DoInsertItem(parent, 0u, text, image, selImage, data);
1356 }
1357
1358 wxTreeItemId wxGenericTreeCtrl::InsertItem(const wxTreeItemId& parentId,
1359                                     const wxTreeItemId& idPrevious,
1360                                     const wxString& text,
1361                                     int image, int selImage,
1362                                     wxTreeItemData *data)
1363 {
1364     wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
1365     if ( !parent )
1366     {
1367         // should we give a warning here?
1368         return AddRoot(text, image, selImage, data);
1369     }
1370
1371     int index = -1;
1372     if (idPrevious.IsOk())
1373     {
1374         index = parent->GetChildren().Index((wxGenericTreeItem*) idPrevious.m_pItem);
1375         wxASSERT_MSG( index != wxNOT_FOUND,
1376                       wxT("previous item in wxGenericTreeCtrl::InsertItem() is not a sibling") );
1377     }
1378
1379     return DoInsertItem(parentId, (size_t)++index, text, image, selImage, data);
1380 }
1381
1382 wxTreeItemId wxGenericTreeCtrl::InsertItem(const wxTreeItemId& parentId,
1383                                     size_t before,
1384                                     const wxString& text,
1385                                     int image, int selImage,
1386                                     wxTreeItemData *data)
1387 {
1388     wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
1389     if ( !parent )
1390     {
1391         // should we give a warning here?
1392         return AddRoot(text, image, selImage, data);
1393     }
1394
1395     return DoInsertItem(parentId, before, text, image, selImage, data);
1396 }
1397
1398 wxTreeItemId wxGenericTreeCtrl::AppendItem(const wxTreeItemId& parentId,
1399                                     const wxString& text,
1400                                     int image, int selImage,
1401                                     wxTreeItemData *data)
1402 {
1403     wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
1404     if ( !parent )
1405     {
1406         // should we give a warning here?
1407         return AddRoot(text, image, selImage, data);
1408     }
1409
1410     return DoInsertItem( parent, parent->GetChildren().Count(), text,
1411                          image, selImage, data);
1412 }
1413
1414 void wxGenericTreeCtrl::SendDeleteEvent(wxGenericTreeItem *item)
1415 {
1416     wxTreeEvent event( wxEVT_COMMAND_TREE_DELETE_ITEM, GetId() );
1417     event.m_item = (long) item;
1418     event.SetEventObject( this );
1419     ProcessEvent( event );
1420 }
1421
1422 void wxGenericTreeCtrl::DeleteChildren(const wxTreeItemId& itemId)
1423 {
1424     m_dirty = TRUE;     // do this first so stuff below doesn't cause flicker
1425
1426     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1427     item->DeleteChildren(this);
1428 }
1429
1430 void wxGenericTreeCtrl::Delete(const wxTreeItemId& itemId)
1431 {
1432     m_dirty = TRUE;     // do this first so stuff below doesn't cause flicker
1433
1434     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1435
1436     wxGenericTreeItem *parent = item->GetParent();
1437
1438     // don't keep stale pointers around!
1439     if ( IsDescendantOf(item, m_key_current) )
1440     {
1441         m_key_current = parent;
1442     }
1443
1444     if ( IsDescendantOf(item, m_current) )
1445     {
1446         m_current = parent;
1447     }
1448
1449     // remove the item from the tree
1450     if ( parent )
1451     {
1452         parent->GetChildren().Remove( item );  // remove by value
1453     }
1454     else // deleting the root
1455     {
1456         // nothing will be left in the tree
1457         m_anchor = NULL;
1458     }
1459
1460     // and delete all of its children and the item itself now
1461     item->DeleteChildren(this);
1462     SendDeleteEvent(item);
1463     delete item;
1464 }
1465
1466 void wxGenericTreeCtrl::DeleteAllItems()
1467 {
1468     if ( m_anchor )
1469     {
1470         Delete(m_anchor);
1471     }
1472 }
1473
1474 void wxGenericTreeCtrl::Expand(const wxTreeItemId& itemId)
1475 {
1476     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1477
1478     wxCHECK_RET( item, _T("invalid item in wxGenericTreeCtrl::Expand") );
1479     wxCHECK_RET( !HasFlag(wxTR_HIDE_ROOT) || itemId != GetRootItem(),
1480                  _T("can't expand hidden root") );
1481
1482     if ( !item->HasPlus() )
1483         return;
1484
1485     if ( item->IsExpanded() )
1486         return;
1487
1488     wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_EXPANDING, GetId() );
1489     event.m_item = (long) item;
1490     event.SetEventObject( this );
1491
1492     if ( ProcessEvent( event ) && !event.IsAllowed() )
1493     {
1494         // cancelled by program
1495         return;
1496     }
1497
1498     item->Expand();
1499     CalculatePositions();
1500
1501     RefreshSubtree(item);
1502
1503     event.SetEventType(wxEVT_COMMAND_TREE_ITEM_EXPANDED);
1504     ProcessEvent( event );
1505 }
1506
1507 void wxGenericTreeCtrl::ExpandAll(const wxTreeItemId& item)
1508 {
1509     if ( !HasFlag(wxTR_HIDE_ROOT) || item != GetRootItem())
1510     {
1511         Expand(item);
1512         if ( !IsExpanded(item) )
1513             return;
1514     }
1515
1516     long cookie;
1517     wxTreeItemId child = GetFirstChild(item, cookie);
1518     while ( child.IsOk() )
1519     {
1520         ExpandAll(child);
1521
1522         child = GetNextChild(item, cookie);
1523     }
1524 }
1525
1526 void wxGenericTreeCtrl::Collapse(const wxTreeItemId& itemId)
1527 {
1528     wxCHECK_RET( !HasFlag(wxTR_HIDE_ROOT) || itemId != GetRootItem(),
1529                  _T("can't collapse hidden root") );
1530
1531     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1532
1533     if ( !item->IsExpanded() )
1534         return;
1535
1536     wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_COLLAPSING, GetId() );
1537     event.m_item = (long) item;
1538     event.SetEventObject( this );
1539     if ( ProcessEvent( event ) && !event.IsAllowed() )
1540     {
1541         // cancelled by program
1542         return;
1543     }
1544
1545     item->Collapse();
1546
1547 #if 0  // TODO why should items be collapsed recursively?
1548     wxArrayGenericTreeItems& children = item->GetChildren();
1549     size_t count = children.Count();
1550     for ( size_t n = 0; n < count; n++ )
1551     {
1552         Collapse(children[n]);
1553     }
1554 #endif
1555
1556     CalculatePositions();
1557
1558     RefreshSubtree(item);
1559
1560     event.SetEventType(wxEVT_COMMAND_TREE_ITEM_COLLAPSED);
1561     ProcessEvent( event );
1562 }
1563
1564 void wxGenericTreeCtrl::CollapseAndReset(const wxTreeItemId& item)
1565 {
1566     Collapse(item);
1567     DeleteChildren(item);
1568 }
1569
1570 void wxGenericTreeCtrl::Toggle(const wxTreeItemId& itemId)
1571 {
1572     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1573
1574     if (item->IsExpanded())
1575         Collapse(itemId);
1576     else
1577         Expand(itemId);
1578 }
1579
1580 void wxGenericTreeCtrl::Unselect()
1581 {
1582     if (m_current)
1583     {
1584         m_current->SetHilight( FALSE );
1585         RefreshLine( m_current );
1586
1587         m_current = NULL;
1588     }
1589 }
1590
1591 void wxGenericTreeCtrl::UnselectAllChildren(wxGenericTreeItem *item)
1592 {
1593     if (item->IsSelected())
1594     {
1595         item->SetHilight(FALSE);
1596         RefreshLine(item);
1597     }
1598
1599     if (item->HasChildren())
1600     {
1601         wxArrayGenericTreeItems& children = item->GetChildren();
1602         size_t count = children.Count();
1603         for ( size_t n = 0; n < count; ++n )
1604         {
1605             UnselectAllChildren(children[n]);
1606         }
1607     }
1608 }
1609
1610 void wxGenericTreeCtrl::UnselectAll()
1611 {
1612     wxTreeItemId rootItem = GetRootItem();
1613
1614     // the tree might not have the root item at all
1615     if ( rootItem )
1616     {
1617         UnselectAllChildren((wxGenericTreeItem*) rootItem.m_pItem);
1618     }
1619 }
1620
1621 // Recursive function !
1622 // To stop we must have crt_item<last_item
1623 // Algorithm :
1624 // Tag all next children, when no more children,
1625 // Move to parent (not to tag)
1626 // Keep going... if we found last_item, we stop.
1627 bool wxGenericTreeCtrl::TagNextChildren(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select)
1628 {
1629     wxGenericTreeItem *parent = crt_item->GetParent();
1630
1631     if (parent == NULL) // This is root item
1632         return TagAllChildrenUntilLast(crt_item, last_item, select);
1633
1634     wxArrayGenericTreeItems& children = parent->GetChildren();
1635     int index = children.Index(crt_item);
1636     wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
1637
1638     size_t count = children.Count();
1639     for (size_t n=(size_t)(index+1); n<count; ++n)
1640     {
1641         if (TagAllChildrenUntilLast(children[n], last_item, select)) return TRUE;
1642     }
1643
1644     return TagNextChildren(parent, last_item, select);
1645 }
1646
1647 bool wxGenericTreeCtrl::TagAllChildrenUntilLast(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select)
1648 {
1649     crt_item->SetHilight(select);
1650     RefreshLine(crt_item);
1651
1652     if (crt_item==last_item)
1653         return TRUE;
1654
1655     if (crt_item->HasChildren())
1656     {
1657         wxArrayGenericTreeItems& children = crt_item->GetChildren();
1658         size_t count = children.Count();
1659         for ( size_t n = 0; n < count; ++n )
1660         {
1661             if (TagAllChildrenUntilLast(children[n], last_item, select))
1662                 return TRUE;
1663         }
1664     }
1665
1666   return FALSE;
1667 }
1668
1669 void wxGenericTreeCtrl::SelectItemRange(wxGenericTreeItem *item1, wxGenericTreeItem *item2)
1670 {
1671     // item2 is not necessary after item1
1672     wxGenericTreeItem *first=NULL, *last=NULL;
1673
1674     // choice first' and 'last' between item1 and item2
1675     if (item1->GetY()<item2->GetY())
1676     {
1677         first=item1;
1678         last=item2;
1679     }
1680     else
1681     {
1682         first=item2;
1683         last=item1;
1684     }
1685
1686     bool select = m_current->IsSelected();
1687
1688     if ( TagAllChildrenUntilLast(first,last,select) )
1689         return;
1690
1691     TagNextChildren(first,last,select);
1692 }
1693
1694 void wxGenericTreeCtrl::SelectItem(const wxTreeItemId& itemId,
1695                                    bool unselect_others,
1696                                    bool extended_select)
1697 {
1698     wxCHECK_RET( itemId.IsOk(), wxT("invalid tree item") );
1699
1700     bool is_single=!(GetWindowStyleFlag() & wxTR_MULTIPLE);
1701     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1702
1703     //wxCHECK_RET( ( (!unselect_others) && is_single),
1704     //           wxT("this is a single selection tree") );
1705
1706     // to keep going anyhow !!!
1707     if (is_single)
1708     {
1709         if (item->IsSelected())
1710             return; // nothing to do
1711         unselect_others = TRUE;
1712         extended_select = FALSE;
1713     }
1714     else if ( unselect_others && item->IsSelected() )
1715     {
1716         // selection change if there is more than one item currently selected
1717         wxArrayTreeItemIds selected_items;
1718         if ( GetSelections(selected_items) == 1 )
1719             return;
1720     }
1721
1722     wxTreeEvent event( wxEVT_COMMAND_TREE_SEL_CHANGING, GetId() );
1723     event.m_item = (long) item;
1724     event.m_itemOld = (long) m_current;
1725     event.SetEventObject( this );
1726     // TODO : Here we don't send any selection mode yet !
1727
1728     if ( GetEventHandler()->ProcessEvent( event ) && !event.IsAllowed() )
1729         return;
1730
1731     wxTreeItemId parent = GetParent( itemId );
1732     while (parent.IsOk())
1733     {
1734         if (!IsExpanded(parent))
1735             Expand( parent );
1736
1737         parent = GetParent( parent );
1738     }
1739
1740     EnsureVisible( itemId );
1741
1742     // ctrl press
1743     if (unselect_others)
1744     {
1745         if (is_single) Unselect(); // to speed up thing
1746         else UnselectAll();
1747     }
1748
1749     // shift press
1750     if (extended_select)
1751     {
1752         if ( !m_current )
1753         {
1754             m_current = m_key_current = (wxGenericTreeItem*) GetRootItem().m_pItem;
1755         }
1756
1757         // don't change the mark (m_current)
1758         SelectItemRange(m_current, item);
1759     }
1760     else
1761     {
1762         bool select=TRUE; // the default
1763
1764         // Check if we need to toggle hilight (ctrl mode)
1765         if (!unselect_others)
1766             select=!item->IsSelected();
1767
1768         m_current = m_key_current = item;
1769         m_current->SetHilight(select);
1770         RefreshLine( m_current );
1771     }
1772
1773     event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED);
1774     GetEventHandler()->ProcessEvent( event );
1775 }
1776
1777 void wxGenericTreeCtrl::FillArray(wxGenericTreeItem *item,
1778                                   wxArrayTreeItemIds &array) const
1779 {
1780     if ( item->IsSelected() )
1781         array.Add(wxTreeItemId(item));
1782
1783     if ( item->HasChildren() )
1784     {
1785         wxArrayGenericTreeItems& children = item->GetChildren();
1786         size_t count = children.GetCount();
1787         for ( size_t n = 0; n < count; ++n )
1788             FillArray(children[n], array);
1789     }
1790 }
1791
1792 size_t wxGenericTreeCtrl::GetSelections(wxArrayTreeItemIds &array) const
1793 {
1794     array.Empty();
1795     wxTreeItemId idRoot = GetRootItem();
1796     if ( idRoot.IsOk() )
1797     {
1798         FillArray((wxGenericTreeItem*) idRoot.m_pItem, array);
1799     }
1800     //else: the tree is empty, so no selections
1801
1802     return array.Count();
1803 }
1804
1805 void wxGenericTreeCtrl::EnsureVisible(const wxTreeItemId& item)
1806 {
1807     if (!item.IsOk()) return;
1808
1809     wxGenericTreeItem *gitem = (wxGenericTreeItem*) item.m_pItem;
1810
1811     // first expand all parent branches
1812     wxGenericTreeItem *parent = gitem->GetParent();
1813
1814     if ( HasFlag(wxTR_HIDE_ROOT) )
1815     {
1816         while ( parent != m_anchor )
1817         {
1818             Expand(parent);
1819             parent = parent->GetParent();
1820         }
1821     }
1822     else
1823     {
1824         while ( parent )
1825         {
1826             Expand(parent);
1827             parent = parent->GetParent();
1828         }
1829     }
1830
1831     //if (parent) CalculatePositions();
1832
1833     ScrollTo(item);
1834 }
1835
1836 void wxGenericTreeCtrl::ScrollTo(const wxTreeItemId &item)
1837 {
1838     if (!item.IsOk()) return;
1839
1840     // We have to call this here because the label in
1841     // question might just have been added and no screen
1842     // update taken place.
1843     if (m_dirty) wxYieldIfNeeded();
1844
1845     wxGenericTreeItem *gitem = (wxGenericTreeItem*) item.m_pItem;
1846
1847     // now scroll to the item
1848     int item_y = gitem->GetY();
1849
1850     int start_x = 0;
1851     int start_y = 0;
1852     GetViewStart( &start_x, &start_y );
1853     start_y *= PIXELS_PER_UNIT;
1854
1855     int client_h = 0;
1856     int client_w = 0;
1857     GetClientSize( &client_w, &client_h );
1858
1859     if (item_y < start_y+3)
1860     {
1861         // going down
1862         int x = 0;
1863         int y = 0;
1864         m_anchor->GetSize( x, y, this );
1865         y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1866         x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1867         int x_pos = GetScrollPos( wxHORIZONTAL );
1868         // Item should appear at top
1869         SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, item_y/PIXELS_PER_UNIT );
1870     }
1871     else if (item_y+GetLineHeight(gitem) > start_y+client_h)
1872     {
1873         // going up
1874         int x = 0;
1875         int y = 0;
1876         m_anchor->GetSize( x, y, this );
1877         y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1878         x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1879         item_y += PIXELS_PER_UNIT+2;
1880         int x_pos = GetScrollPos( wxHORIZONTAL );
1881         // Item should appear at bottom
1882         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 );
1883     }
1884 }
1885
1886 // FIXME: tree sorting functions are not reentrant and not MT-safe!
1887 static wxGenericTreeCtrl *s_treeBeingSorted = NULL;
1888
1889 static int LINKAGEMODE tree_ctrl_compare_func(wxGenericTreeItem **item1,
1890                                   wxGenericTreeItem **item2)
1891 {
1892     wxCHECK_MSG( s_treeBeingSorted, 0, wxT("bug in wxGenericTreeCtrl::SortChildren()") );
1893
1894     return s_treeBeingSorted->OnCompareItems(*item1, *item2);
1895 }
1896
1897 int wxGenericTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
1898                                const wxTreeItemId& item2)
1899 {
1900     return wxStrcmp(GetItemText(item1), GetItemText(item2));
1901 }
1902
1903 void wxGenericTreeCtrl::SortChildren(const wxTreeItemId& itemId)
1904 {
1905     wxCHECK_RET( itemId.IsOk(), wxT("invalid tree item") );
1906
1907     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1908
1909     wxCHECK_RET( !s_treeBeingSorted,
1910                  wxT("wxGenericTreeCtrl::SortChildren is not reentrant") );
1911
1912     wxArrayGenericTreeItems& children = item->GetChildren();
1913     if ( children.Count() > 1 )
1914     {
1915         m_dirty = TRUE;
1916
1917         s_treeBeingSorted = this;
1918         children.Sort(tree_ctrl_compare_func);
1919         s_treeBeingSorted = NULL;
1920     }
1921     //else: don't make the tree dirty as nothing changed
1922 }
1923
1924 wxImageList *wxGenericTreeCtrl::GetImageList() const
1925 {
1926     return m_imageListNormal;
1927 }
1928
1929 wxImageList *wxGenericTreeCtrl::GetButtonsImageList() const
1930 {
1931     return m_imageListButtons;
1932 }
1933
1934 wxImageList *wxGenericTreeCtrl::GetStateImageList() const
1935 {
1936     return m_imageListState;
1937 }
1938
1939 void wxGenericTreeCtrl::CalculateLineHeight()
1940 {
1941     wxClientDC dc(this);
1942     m_lineHeight = (int)(dc.GetCharHeight() + 4);
1943
1944     if ( m_imageListNormal )
1945     {
1946         // Calculate a m_lineHeight value from the normal Image sizes.
1947         // May be toggle off. Then wxGenericTreeCtrl will spread when
1948         // necessary (which might look ugly).
1949         int n = m_imageListNormal->GetImageCount();
1950         for (int i = 0; i < n ; i++)
1951         {
1952             int width = 0, height = 0;
1953             m_imageListNormal->GetSize(i, width, height);
1954             if (height > m_lineHeight) m_lineHeight = height;
1955         }
1956     }
1957
1958     if (m_imageListButtons)
1959     {
1960         // Calculate a m_lineHeight value from the Button image sizes.
1961         // May be toggle off. Then wxGenericTreeCtrl will spread when
1962         // necessary (which might look ugly).
1963         int n = m_imageListButtons->GetImageCount();
1964         for (int i = 0; i < n ; i++)
1965         {
1966             int width = 0, height = 0;
1967             m_imageListButtons->GetSize(i, width, height);
1968             if (height > m_lineHeight) m_lineHeight = height;
1969         }
1970     }
1971
1972     if (m_lineHeight < 30)
1973         m_lineHeight += 2;                 // at least 2 pixels
1974     else
1975         m_lineHeight += m_lineHeight/10;   // otherwise 10% extra spacing
1976 }
1977
1978 void wxGenericTreeCtrl::SetImageList(wxImageList *imageList)
1979 {
1980     if (m_ownsImageListNormal) delete m_imageListNormal;
1981     m_imageListNormal = imageList;
1982     m_ownsImageListNormal = FALSE;
1983     m_dirty = TRUE;
1984     // Don't do any drawing if we're setting the list to NULL,
1985     // since we may be in the process of deleting the tree control.
1986     if (imageList)
1987         CalculateLineHeight();
1988 }
1989
1990 void wxGenericTreeCtrl::SetStateImageList(wxImageList *imageList)
1991 {
1992     if (m_ownsImageListState) delete m_imageListState;
1993     m_imageListState = imageList;
1994     m_ownsImageListState = FALSE;
1995 }
1996
1997 void wxGenericTreeCtrl::SetButtonsImageList(wxImageList *imageList)
1998 {
1999     if (m_ownsImageListButtons) delete m_imageListButtons;
2000     m_imageListButtons = imageList;
2001     m_ownsImageListButtons = FALSE;
2002     m_dirty = TRUE;
2003     CalculateLineHeight();
2004 }
2005
2006 void wxGenericTreeCtrl::AssignImageList(wxImageList *imageList)
2007 {
2008     SetImageList(imageList);
2009     m_ownsImageListNormal = TRUE;
2010 }
2011
2012 void wxGenericTreeCtrl::AssignStateImageList(wxImageList *imageList)
2013 {
2014     SetStateImageList(imageList);
2015     m_ownsImageListState = TRUE;
2016 }
2017
2018 void wxGenericTreeCtrl::AssignButtonsImageList(wxImageList *imageList)
2019 {
2020     SetButtonsImageList(imageList);
2021     m_ownsImageListButtons = TRUE;
2022 }
2023
2024 // -----------------------------------------------------------------------------
2025 // helpers
2026 // -----------------------------------------------------------------------------
2027
2028 void wxGenericTreeCtrl::AdjustMyScrollbars()
2029 {
2030     if (m_anchor)
2031     {
2032         int x = 0, y = 0;
2033         m_anchor->GetSize( x, y, this );
2034         y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
2035         x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
2036         int x_pos = GetScrollPos( wxHORIZONTAL );
2037         int y_pos = GetScrollPos( wxVERTICAL );
2038         SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, y_pos );
2039     }
2040     else
2041     {
2042         SetScrollbars( 0, 0, 0, 0 );
2043     }
2044 }
2045
2046 int wxGenericTreeCtrl::GetLineHeight(wxGenericTreeItem *item) const
2047 {
2048     if (GetWindowStyleFlag() & wxTR_HAS_VARIABLE_ROW_HEIGHT)
2049         return item->GetHeight();
2050     else
2051         return m_lineHeight;
2052 }
2053
2054 void wxGenericTreeCtrl::PaintItem(wxGenericTreeItem *item, wxDC& dc)
2055 {
2056     // TODO implement "state" icon on items
2057
2058     wxTreeItemAttr *attr = item->GetAttributes();
2059     if ( attr && attr->HasFont() )
2060         dc.SetFont(attr->GetFont());
2061     else if (item->IsBold())
2062         dc.SetFont(m_boldFont);
2063
2064     long text_w = 0, text_h = 0;
2065     dc.GetTextExtent( item->GetText(), &text_w, &text_h );
2066
2067     int image_h = 0, image_w = 0;
2068     int image = item->GetCurrentImage();
2069     if ( image != NO_IMAGE )
2070     {
2071         if ( m_imageListNormal )
2072         {
2073             m_imageListNormal->GetSize( image, image_w, image_h );
2074             image_w += 4;
2075         }
2076         else
2077         {
2078             image = NO_IMAGE;
2079         }
2080     }
2081
2082     int total_h = GetLineHeight(item);
2083
2084     if ( item->IsSelected() )
2085     {
2086         dc.SetBrush(*(m_hasFocus ? m_hilightBrush : m_hilightUnfocusedBrush));
2087     }
2088     else
2089     {
2090         wxColour colBg;
2091         if ( attr && attr->HasBackgroundColour() )
2092             colBg = attr->GetBackgroundColour();
2093         else
2094             colBg = m_backgroundColour;
2095         dc.SetBrush(wxBrush(colBg, wxSOLID));
2096     }
2097
2098     int offset = HasFlag(wxTR_ROW_LINES) ? 1 : 0;
2099
2100     if ( HasFlag(wxTR_FULL_ROW_HIGHLIGHT) )
2101     {
2102         int x, y, w, h;
2103
2104         DoGetPosition(&x, &y);
2105         DoGetSize(&w, &h);
2106         dc.DrawRectangle(x, item->GetY()+offset, w, total_h-offset);
2107     }
2108     else
2109     {
2110         if ( item->IsSelected() && image != NO_IMAGE )
2111         {
2112             // If it's selected, and there's an image, then we should
2113             // take care to leave the area under the image painted in the
2114             // background colour.
2115             dc.DrawRectangle( item->GetX() + image_w - 2, item->GetY()+offset,
2116                               item->GetWidth() - image_w + 2, total_h-offset );
2117         }
2118         else
2119         {
2120             dc.DrawRectangle( item->GetX()-2, item->GetY()+offset,
2121                               item->GetWidth()+2, total_h-offset );
2122         }
2123     }
2124
2125     if ( image != NO_IMAGE )
2126     {
2127         dc.SetClippingRegion( item->GetX(), item->GetY(), image_w-2, total_h );
2128         m_imageListNormal->Draw( image, dc,
2129                                  item->GetX(),
2130                                  item->GetY() +((total_h > image_h)?((total_h-image_h)/2):0),
2131                                  wxIMAGELIST_DRAW_TRANSPARENT );
2132         dc.DestroyClippingRegion();
2133     }
2134
2135     dc.SetBackgroundMode(wxTRANSPARENT);
2136     int extraH = (total_h > text_h) ? (total_h - text_h)/2 : 0;
2137     dc.DrawText( item->GetText(),
2138                  (wxCoord)(image_w + item->GetX()),
2139                  (wxCoord)(item->GetY() + extraH));
2140
2141     // restore normal font
2142     dc.SetFont( m_normalFont );
2143 }
2144
2145 // Now y stands for the top of the item, whereas it used to stand for middle !
2146 void wxGenericTreeCtrl::PaintLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y )
2147 {
2148     int x = level*m_indent;
2149     if (!HasFlag(wxTR_HIDE_ROOT))
2150     {
2151         x += m_indent;
2152     }
2153     else if (level == 0)
2154     {
2155         // always expand hidden root
2156         int origY = y;
2157         wxArrayGenericTreeItems& children = item->GetChildren();
2158         int count = children.Count();
2159         if (count > 0)
2160         {
2161             int n = 0, oldY;
2162             do {
2163                 oldY = y;
2164                 PaintLevel(children[n], dc, 1, y);
2165             } while (++n < count);
2166
2167             if (!HasFlag(wxTR_NO_LINES) && HasFlag(wxTR_LINES_AT_ROOT) && count > 0)
2168             {
2169                 // draw line down to last child
2170                 origY += GetLineHeight(children[0])>>1;
2171                 oldY += GetLineHeight(children[n-1])>>1;
2172                 dc.DrawLine(3, origY, 3, oldY);
2173             }
2174         }
2175         return;
2176     }
2177
2178     item->SetX(x+m_spacing);
2179     item->SetY(y);
2180
2181     int h = GetLineHeight(item);
2182     int y_top = y;
2183     int y_mid = y_top + (h>>1);
2184     y += h;
2185
2186     int exposed_x = dc.LogicalToDeviceX(0);
2187     int exposed_y = dc.LogicalToDeviceY(y_top);
2188
2189     if (IsExposed(exposed_x, exposed_y, 10000, h))  // 10000 = very much
2190     {
2191         wxPen *pen =
2192 #ifndef __WXMAC__
2193             // don't draw rect outline if we already have the
2194             // background color under Mac
2195             (item->IsSelected() && m_hasFocus) ? wxBLACK_PEN :
2196 #endif // !__WXMAC__
2197             wxTRANSPARENT_PEN;
2198
2199         wxColour colText;
2200         if ( item->IsSelected() )
2201         {
2202             colText = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
2203         }
2204         else
2205         {
2206             wxTreeItemAttr *attr = item->GetAttributes();
2207             if (attr && attr->HasTextColour())
2208                 colText = attr->GetTextColour();
2209             else
2210                 colText = GetForegroundColour();
2211         }
2212
2213         // prepare to draw
2214         dc.SetTextForeground(colText);
2215         dc.SetPen(*pen);
2216
2217         // draw
2218         PaintItem(item, dc);
2219
2220         if (HasFlag(wxTR_ROW_LINES))
2221         {
2222             // if the background colour is white, choose a
2223             // contrasting color for the lines
2224             dc.SetPen(*((GetBackgroundColour() == *wxWHITE)
2225                          ? wxMEDIUM_GREY_PEN : wxWHITE_PEN));
2226             dc.DrawLine(0, y_top, 10000, y_top);
2227             dc.DrawLine(0, y, 10000, y);
2228         }
2229
2230         // restore DC objects
2231         dc.SetBrush(*wxWHITE_BRUSH);
2232         dc.SetPen(m_dottedPen);
2233         dc.SetTextForeground(*wxBLACK);
2234
2235         if (item->HasPlus() && HasButtons())  // should the item show a button?
2236         {
2237             if (!HasFlag(wxTR_NO_LINES))
2238             {
2239                 if (x > (signed)m_indent)
2240                     dc.DrawLine(x - m_indent, y_mid, x - 5, y_mid);
2241                 else if (HasFlag(wxTR_LINES_AT_ROOT))
2242                     dc.DrawLine(3, y_mid, x - 5, y_mid);
2243                 dc.DrawLine(x + 5, y_mid, x + m_spacing, y_mid);
2244             }
2245
2246             if (m_imageListButtons != NULL)
2247             {
2248                 // draw the image button here
2249                 int image_h = 0, image_w = 0, image = wxTreeItemIcon_Normal;
2250                 if (item->IsExpanded()) image = wxTreeItemIcon_Expanded;
2251                 if (item->IsSelected())
2252                     image += wxTreeItemIcon_Selected - wxTreeItemIcon_Normal;
2253                 m_imageListButtons->GetSize(image, image_w, image_h);
2254                 int xx = x - (image_w>>1);
2255                 int yy = y_mid - (image_h>>1);
2256                 dc.SetClippingRegion(xx, yy, image_w, image_h);
2257                 m_imageListButtons->Draw(image, dc, xx, yy,
2258                                          wxIMAGELIST_DRAW_TRANSPARENT);
2259                 dc.DestroyClippingRegion();
2260             }
2261             else if (HasFlag(wxTR_TWIST_BUTTONS))
2262             {
2263                 // draw the twisty button here
2264
2265                 if (HasFlag(wxTR_AQUA_BUTTONS))
2266                 {
2267                     if (item->IsExpanded())
2268                         dc.DrawBitmap( *m_arrowDown, x-5, y_mid-6, TRUE );
2269                     else
2270                         dc.DrawBitmap( *m_arrowRight, x-5, y_mid-6, TRUE );
2271                 }
2272                 else
2273                 {
2274                     dc.SetBrush(*m_hilightBrush);
2275                     dc.SetPen(*wxBLACK_PEN);
2276                     wxPoint button[3];
2277
2278                     if (item->IsExpanded())
2279                     {
2280                         button[0].x = x-5;
2281                         button[0].y = y_mid-2;
2282                         button[1].x = x+5;
2283                         button[1].y = y_mid-2;
2284                         button[2].x = x;
2285                         button[2].y = y_mid+3;
2286                     }
2287                     else
2288                     {
2289                         button[0].y = y_mid-5;
2290                         button[0].x = x-2;
2291                         button[1].y = y_mid+5;
2292                         button[1].x = x-2;
2293                         button[2].y = y_mid;
2294                         button[2].x = x+3;
2295                     }
2296                     dc.DrawPolygon(3, button);
2297                     dc.SetPen(m_dottedPen);
2298                 }
2299             }
2300             else // if (HasFlag(wxTR_HAS_BUTTONS))
2301             {
2302                 // draw the plus sign here
2303                 dc.SetPen(*wxGREY_PEN);
2304                 dc.SetBrush(*wxWHITE_BRUSH);
2305                 dc.DrawRectangle(x-5, y_mid-4, 11, 9);
2306                 dc.SetPen(*wxBLACK_PEN);
2307                 dc.DrawLine(x-2, y_mid, x+3, y_mid);
2308                 if (!item->IsExpanded())
2309                     dc.DrawLine(x, y_mid-2, x, y_mid+3);
2310                 dc.SetPen(m_dottedPen);
2311             }
2312         }
2313         else if (!HasFlag(wxTR_NO_LINES))  // no button; maybe a line?
2314         {
2315             // draw the horizontal line here
2316             int x_start = x;
2317             if (x > (signed)m_indent)
2318                 x_start -= m_indent;
2319             else if (HasFlag(wxTR_LINES_AT_ROOT))
2320                 x_start = 3;
2321             dc.DrawLine(x_start, y_mid, x + m_spacing, y_mid);
2322         }
2323     }
2324
2325     if (item->IsExpanded())
2326     {
2327         wxArrayGenericTreeItems& children = item->GetChildren();
2328         int count = children.Count();
2329         if (count > 0)
2330         {
2331             int n = 0, oldY;
2332             ++level;
2333             do {
2334                 oldY = y;
2335                 PaintLevel(children[n], dc, level, y);
2336             } while (++n < count);
2337
2338             if (!HasFlag(wxTR_NO_LINES) && count > 0)
2339             {
2340                 // draw line down to last child
2341                 oldY += GetLineHeight(children[n-1])>>1;
2342                 if (HasButtons()) y_mid += 5;
2343                 dc.DrawLine(x, y_mid, x, oldY);
2344             }
2345         }
2346     }
2347 }
2348
2349 void wxGenericTreeCtrl::DrawDropEffect(wxGenericTreeItem *item)
2350 {
2351     if ( item )
2352     {
2353         if ( item->HasPlus() )
2354         {
2355             // it's a folder, indicate it by a border
2356             DrawBorder(item);
2357         }
2358         else
2359         {
2360             // draw a line under the drop target because the item will be
2361             // dropped there
2362             DrawLine(item, TRUE /* below */);
2363         }
2364
2365         SetCursor(wxCURSOR_BULLSEYE);
2366     }
2367     else
2368     {
2369         // can't drop here
2370         SetCursor(wxCURSOR_NO_ENTRY);
2371     }
2372 }
2373
2374 void wxGenericTreeCtrl::DrawBorder(const wxTreeItemId &item)
2375 {
2376     wxCHECK_RET( item.IsOk(), _T("invalid item in wxGenericTreeCtrl::DrawLine") );
2377
2378     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
2379
2380     wxClientDC dc(this);
2381     PrepareDC( dc );
2382     dc.SetLogicalFunction(wxINVERT);
2383     dc.SetBrush(*wxTRANSPARENT_BRUSH);
2384
2385     int w = i->GetWidth() + 2;
2386     int h = GetLineHeight(i) + 2;
2387
2388     dc.DrawRectangle( i->GetX() - 1, i->GetY() - 1, w, h);
2389 }
2390
2391 void wxGenericTreeCtrl::DrawLine(const wxTreeItemId &item, bool below)
2392 {
2393     wxCHECK_RET( item.IsOk(), _T("invalid item in wxGenericTreeCtrl::DrawLine") );
2394
2395     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
2396
2397     wxClientDC dc(this);
2398     PrepareDC( dc );
2399     dc.SetLogicalFunction(wxINVERT);
2400
2401     int x = i->GetX(),
2402         y = i->GetY();
2403     if ( below )
2404     {
2405         y += GetLineHeight(i) - 1;
2406     }
2407
2408     dc.DrawLine( x, y, x + i->GetWidth(), y);
2409 }
2410
2411 // -----------------------------------------------------------------------------
2412 // wxWindows callbacks
2413 // -----------------------------------------------------------------------------
2414
2415 void wxGenericTreeCtrl::OnPaint( wxPaintEvent &WXUNUSED(event) )
2416 {
2417     wxPaintDC dc(this);
2418     PrepareDC( dc );
2419
2420     if ( !m_anchor)
2421         return;
2422
2423     dc.SetFont( m_normalFont );
2424     dc.SetPen( m_dottedPen );
2425
2426     // this is now done dynamically
2427     //if(GetImageList() == NULL)
2428     // m_lineHeight = (int)(dc.GetCharHeight() + 4);
2429
2430     int y = 2;
2431     PaintLevel( m_anchor, dc, 0, y );
2432 }
2433
2434 void wxGenericTreeCtrl::OnSetFocus( wxFocusEvent &event )
2435 {
2436     m_hasFocus = TRUE;
2437
2438     RefreshSelected();
2439
2440     event.Skip();
2441 }
2442
2443 void wxGenericTreeCtrl::OnKillFocus( wxFocusEvent &event )
2444 {
2445     m_hasFocus = FALSE;
2446
2447     RefreshSelected();
2448
2449     event.Skip();
2450 }
2451
2452 void wxGenericTreeCtrl::OnChar( wxKeyEvent &event )
2453 {
2454     wxTreeEvent te( wxEVT_COMMAND_TREE_KEY_DOWN, GetId() );
2455     te.m_evtKey = event;
2456     te.SetEventObject( this );
2457     if ( GetEventHandler()->ProcessEvent( te ) )
2458     {
2459         // intercepted by the user code
2460         return;
2461     }
2462
2463     if ( (m_current == 0) || (m_key_current == 0) )
2464     {
2465         event.Skip();
2466         return;
2467     }
2468
2469     // how should the selection work for this event?
2470     bool is_multiple, extended_select, unselect_others;
2471     EventFlagsToSelType(GetWindowStyleFlag(),
2472                         event.ShiftDown(),
2473                         event.ControlDown(),
2474                         is_multiple, extended_select, unselect_others);
2475
2476     // + : Expand
2477     // - : Collaspe
2478     // * : Expand all/Collapse all
2479     // ' ' | return : activate
2480     // up    : go up (not last children!)
2481     // down  : go down
2482     // left  : go to parent
2483     // right : open if parent and go next
2484     // home  : go to root
2485     // end   : go to last item without opening parents
2486     // alnum : start or continue searching for the item with this prefix
2487     int keyCode = event.KeyCode();
2488     switch ( keyCode )
2489     {
2490         case '+':
2491         case WXK_ADD:
2492             if (m_current->HasPlus() && !IsExpanded(m_current))
2493             {
2494                 Expand(m_current);
2495             }
2496             break;
2497
2498         case '*':
2499         case WXK_MULTIPLY:
2500             if ( !IsExpanded(m_current) )
2501             {
2502                 // expand all
2503                 ExpandAll(m_current);
2504                 break;
2505             }
2506             //else: fall through to Collapse() it
2507
2508         case '-':
2509         case WXK_SUBTRACT:
2510             if (IsExpanded(m_current))
2511             {
2512                 Collapse(m_current);
2513             }
2514             break;
2515
2516         case ' ':
2517         case WXK_RETURN:
2518             if ( !event.HasModifiers() )
2519             {
2520                 wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
2521                 event.m_item = (long) m_current;
2522                 event.SetEventObject( this );
2523                 GetEventHandler()->ProcessEvent( event );
2524             }
2525
2526             // in any case, also generate the normal key event for this key,
2527             // even if we generated the ACTIVATED event above: this is what
2528             // wxMSW does and it makes sense because you might not want to
2529             // process ACTIVATED event at all and handle Space and Return
2530             // directly (and differently) which would be impossible otherwise
2531             event.Skip();
2532             break;
2533
2534             // up goes to the previous sibling or to the last
2535             // of its children if it's expanded
2536         case WXK_UP:
2537             {
2538                 wxTreeItemId prev = GetPrevSibling( m_key_current );
2539                 if (!prev)
2540                 {
2541                     prev = GetParent( m_key_current );
2542                     if ((prev == GetRootItem()) && HasFlag(wxTR_HIDE_ROOT))
2543                     {
2544                         break;  // don't go to root if it is hidden
2545                     }
2546                     if (prev)
2547                     {
2548                         long cookie = 0;
2549                         wxTreeItemId current = m_key_current;
2550                         // TODO: Huh?  If we get here, we'd better be the first child of our parent.  How else could it be?
2551                         if (current == GetFirstChild( prev, cookie ))
2552                         {
2553                             // otherwise we return to where we came from
2554                             SelectItem( prev, unselect_others, extended_select );
2555                             m_key_current= (wxGenericTreeItem*) prev.m_pItem;
2556                             break;
2557                         }
2558                     }
2559                 }
2560                 if (prev)
2561                 {
2562                     while ( IsExpanded(prev) && HasChildren(prev) )
2563                     {
2564                         wxTreeItemId child = GetLastChild(prev);
2565                         if ( child )
2566                         {
2567                             prev = child;
2568                         }
2569                     }
2570
2571                     SelectItem( prev, unselect_others, extended_select );
2572                     m_key_current=(wxGenericTreeItem*) prev.m_pItem;
2573                 }
2574             }
2575             break;
2576
2577             // left arrow goes to the parent
2578         case WXK_LEFT:
2579             {
2580                 wxTreeItemId prev = GetParent( m_current );
2581                 if ((prev == GetRootItem()) && HasFlag(wxTR_HIDE_ROOT))
2582                 {
2583                     // don't go to root if it is hidden
2584                     prev = GetPrevSibling( m_current );
2585                 }
2586                 if (prev)
2587                 {
2588                     SelectItem( prev, unselect_others, extended_select );
2589                 }
2590             }
2591             break;
2592
2593         case WXK_RIGHT:
2594             // this works the same as the down arrow except that we
2595             // also expand the item if it wasn't expanded yet
2596             Expand(m_current);
2597             // fall through
2598
2599         case WXK_DOWN:
2600             {
2601                 if (IsExpanded(m_key_current) && HasChildren(m_key_current))
2602                 {
2603                     long cookie = 0;
2604                     wxTreeItemId child = GetFirstChild( m_key_current, cookie );
2605                     SelectItem( child, unselect_others, extended_select );
2606                     m_key_current=(wxGenericTreeItem*) child.m_pItem;
2607                 }
2608                 else
2609                 {
2610                     wxTreeItemId next = GetNextSibling( m_key_current );
2611                     if (!next)
2612                     {
2613                         wxTreeItemId current = m_key_current;
2614                         while (current && !next)
2615                         {
2616                             current = GetParent( current );
2617                             if (current) next = GetNextSibling( current );
2618                         }
2619                     }
2620                     if (next)
2621                     {
2622                         SelectItem( next, unselect_others, extended_select );
2623                         m_key_current=(wxGenericTreeItem*) next.m_pItem;
2624                     }
2625                 }
2626             }
2627             break;
2628
2629             // <End> selects the last visible tree item
2630         case WXK_END:
2631             {
2632                 wxTreeItemId last = GetRootItem();
2633
2634                 while ( last.IsOk() && IsExpanded(last) )
2635                 {
2636                     wxTreeItemId lastChild = GetLastChild(last);
2637
2638                     // it may happen if the item was expanded but then all of
2639                     // its children have been deleted - so IsExpanded() returned
2640                     // TRUE, but GetLastChild() returned invalid item
2641                     if ( !lastChild )
2642                         break;
2643
2644                     last = lastChild;
2645                 }
2646
2647                 if ( last.IsOk() )
2648                 {
2649                     SelectItem( last, unselect_others, extended_select );
2650                 }
2651             }
2652             break;
2653
2654             // <Home> selects the root item
2655         case WXK_HOME:
2656             {
2657                 wxTreeItemId prev = GetRootItem();
2658                 if (!prev)
2659                     break;
2660
2661                 if ( HasFlag(wxTR_HIDE_ROOT) )
2662                 {
2663                     long dummy;
2664                     prev = GetFirstChild(prev, dummy);
2665                     if (!prev)
2666                         break;
2667                 }
2668
2669                 SelectItem( prev, unselect_others, extended_select );
2670             }
2671             break;
2672
2673         default:
2674             // do not use wxIsalnum() here
2675             if ( !event.HasModifiers() &&
2676                  ((keyCode >= '0' && keyCode <= '9') ||
2677                   (keyCode >= 'a' && keyCode <= 'z') ||
2678                   (keyCode >= 'A' && keyCode <= 'Z' )))
2679             {
2680                 // find the next item starting with the given prefix
2681                 char ch = (char)keyCode;
2682
2683                 wxTreeItemId id = FindItem(m_current, m_findPrefix + (wxChar)ch);
2684                 if ( !id.IsOk() )
2685                 {
2686                     // no such item
2687                     break;
2688                 }
2689
2690                 SelectItem(id);
2691
2692                 m_findPrefix += ch;
2693
2694                 // also start the timer to reset the current prefix if the user
2695                 // doesn't press any more alnum keys soon -- we wouldn't want
2696                 // to use this prefix for a new item search
2697                 if ( !m_findTimer )
2698                 {
2699                     m_findTimer = new wxTreeFindTimer(this);
2700                 }
2701
2702                 m_findTimer->Start(wxTreeFindTimer::DELAY, wxTIMER_ONE_SHOT);
2703             }
2704             else
2705             {
2706                 event.Skip();
2707             }
2708     }
2709 }
2710
2711 wxTreeItemId wxGenericTreeCtrl::HitTest(const wxPoint& point, int& flags)
2712 {
2713     // JACS: removed wxYieldIfNeeded() because it can cause the window
2714     // to be deleted from under us if a close window event is pending
2715
2716     int w, h;
2717     GetSize(&w, &h);
2718     flags=0;
2719     if (point.x<0) flags |= wxTREE_HITTEST_TOLEFT;
2720     if (point.x>w) flags |= wxTREE_HITTEST_TORIGHT;
2721     if (point.y<0) flags |= wxTREE_HITTEST_ABOVE;
2722     if (point.y>h) flags |= wxTREE_HITTEST_BELOW;
2723     if (flags) return wxTreeItemId();
2724
2725     if (m_anchor == NULL)
2726     {
2727         flags = wxTREE_HITTEST_NOWHERE;
2728         return wxTreeItemId();
2729     }
2730
2731     wxGenericTreeItem *hit =  m_anchor->HitTest(CalcUnscrolledPosition(point),
2732                                                 this, flags, 0);
2733     if (hit == NULL)
2734     {
2735         flags = wxTREE_HITTEST_NOWHERE;
2736         return wxTreeItemId();
2737     }
2738     return hit;
2739 }
2740
2741 // get the bounding rectangle of the item (or of its label only)
2742 bool wxGenericTreeCtrl::GetBoundingRect(const wxTreeItemId& item,
2743                                         wxRect& rect,
2744                                         bool WXUNUSED(textOnly)) const
2745 {
2746     wxCHECK_MSG( item.IsOk(), FALSE, _T("invalid item in wxGenericTreeCtrl::GetBoundingRect") );
2747
2748     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
2749
2750     int startX, startY;
2751     GetViewStart(& startX, & startY);
2752
2753     rect.x = i->GetX() - startX*PIXELS_PER_UNIT;
2754     rect.y = i->GetY() - startY*PIXELS_PER_UNIT;
2755     rect.width = i->GetWidth();
2756     //rect.height = i->GetHeight();
2757     rect.height = GetLineHeight(i);
2758
2759     return TRUE;
2760 }
2761
2762 void wxGenericTreeCtrl::Edit( const wxTreeItemId& item )
2763 {
2764     wxCHECK_RET( item.IsOk(), _T("can't edit an invalid item") );
2765
2766     wxGenericTreeItem *itemEdit = (wxGenericTreeItem *)item.m_pItem;
2767
2768     wxTreeEvent te( wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT, GetId() );
2769     te.m_item = (long) itemEdit;
2770     te.SetEventObject( this );
2771     if ( GetEventHandler()->ProcessEvent( te ) && !te.IsAllowed() )
2772     {
2773         // vetoed by user
2774         return;
2775     }
2776
2777     // We have to call this here because the label in
2778     // question might just have been added and no screen
2779     // update taken place.
2780     if ( m_dirty )
2781         wxYieldIfNeeded();
2782
2783     wxTreeTextCtrl *text = new wxTreeTextCtrl(this, itemEdit);
2784
2785     text->SetFocus();
2786 }
2787
2788 bool wxGenericTreeCtrl::OnRenameAccept(wxGenericTreeItem *item,
2789                                        const wxString& value)
2790 {
2791     wxTreeEvent le( wxEVT_COMMAND_TREE_END_LABEL_EDIT, GetId() );
2792     le.m_item = (long) item;
2793     le.SetEventObject( this );
2794     le.m_label = value;
2795
2796     return !GetEventHandler()->ProcessEvent( le ) || le.IsAllowed();
2797 }
2798
2799 void wxGenericTreeCtrl::OnRenameTimer()
2800 {
2801     Edit( m_current );
2802 }
2803
2804 void wxGenericTreeCtrl::OnMouse( wxMouseEvent &event )
2805 {
2806     if ( !m_anchor ) return;
2807
2808     // we process left mouse up event (enables in-place edit), right down
2809     // (pass to the user code), left dbl click (activate item) and
2810     // dragging/moving events for items drag-and-drop
2811     if ( !(event.LeftDown() ||
2812            event.LeftUp() ||
2813            event.RightDown() ||
2814            event.LeftDClick() ||
2815            event.Dragging() ||
2816            ((event.Moving() || event.RightUp()) && m_isDragging)) )
2817     {
2818         event.Skip();
2819
2820         return;
2821     }
2822
2823     wxPoint pt = CalcUnscrolledPosition(event.GetPosition());
2824
2825     int flags = 0;
2826     wxGenericTreeItem *item = m_anchor->HitTest(pt, this, flags, 0);
2827
2828     if ( event.Dragging() && !m_isDragging )
2829     {
2830         if (m_dragCount == 0)
2831             m_dragStart = pt;
2832
2833         m_dragCount++;
2834
2835         if (m_dragCount != 3)
2836         {
2837             // wait until user drags a bit further...
2838             return;
2839         }
2840
2841         wxEventType command = event.RightIsDown()
2842                               ? wxEVT_COMMAND_TREE_BEGIN_RDRAG
2843                               : wxEVT_COMMAND_TREE_BEGIN_DRAG;
2844
2845         wxTreeEvent nevent( command, GetId() );
2846         nevent.m_item = (long) m_current;
2847         nevent.SetEventObject(this);
2848
2849         // by default the dragging is not supported, the user code must
2850         // explicitly allow the event for it to take place
2851         nevent.Veto();
2852
2853         if ( GetEventHandler()->ProcessEvent(nevent) && nevent.IsAllowed() )
2854         {
2855             // we're going to drag this item
2856             m_isDragging = TRUE;
2857
2858             // remember the old cursor because we will change it while
2859             // dragging
2860             m_oldCursor = m_cursor;
2861
2862             // in a single selection control, hide the selection temporarily
2863             if ( !(GetWindowStyleFlag() & wxTR_MULTIPLE) )
2864             {
2865                 m_oldSelection = (wxGenericTreeItem*) GetSelection().m_pItem;
2866
2867                 if ( m_oldSelection )
2868                 {
2869                     m_oldSelection->SetHilight(FALSE);
2870                     RefreshLine(m_oldSelection);
2871                 }
2872             }
2873
2874             CaptureMouse();
2875         }
2876     }
2877     else if ( event.Moving() )
2878     {
2879         if ( item != m_dropTarget )
2880         {
2881             // unhighlight the previous drop target
2882             DrawDropEffect(m_dropTarget);
2883
2884             m_dropTarget = item;
2885
2886             // highlight the current drop target if any
2887             DrawDropEffect(m_dropTarget);
2888
2889             wxYieldIfNeeded();
2890         }
2891     }
2892     else if ( (event.LeftUp() || event.RightUp()) && m_isDragging )
2893     {
2894         // erase the highlighting
2895         DrawDropEffect(m_dropTarget);
2896
2897         if ( m_oldSelection )
2898         {
2899             m_oldSelection->SetHilight(TRUE);
2900             RefreshLine(m_oldSelection);
2901             m_oldSelection = (wxGenericTreeItem *)NULL;
2902         }
2903
2904         // generate the drag end event
2905         wxTreeEvent event(wxEVT_COMMAND_TREE_END_DRAG, GetId());
2906
2907         event.m_item = (long) item;
2908         event.m_pointDrag = pt;
2909         event.SetEventObject(this);
2910
2911         (void)GetEventHandler()->ProcessEvent(event);
2912
2913         m_isDragging = FALSE;
2914         m_dropTarget = (wxGenericTreeItem *)NULL;
2915
2916         ReleaseMouse();
2917
2918         SetCursor(m_oldCursor);
2919
2920         wxYieldIfNeeded();
2921     }
2922     else
2923     {
2924         // here we process only the messages which happen on tree items
2925
2926         m_dragCount = 0;
2927
2928         if (item == NULL) return;  /* we hit the blank area */
2929
2930         if ( event.RightDown() )
2931         {
2932             wxTreeEvent nevent(wxEVT_COMMAND_TREE_ITEM_RIGHT_CLICK, GetId());
2933             nevent.m_item = (long) item;
2934             nevent.m_pointDrag = CalcScrolledPosition(pt);
2935             nevent.SetEventObject(this);
2936             GetEventHandler()->ProcessEvent(nevent);
2937         }
2938         else if ( event.LeftUp() )
2939         {
2940             if ( m_lastOnSame )
2941             {
2942                 if ( (item == m_current) &&
2943                      (flags & wxTREE_HITTEST_ONITEMLABEL) &&
2944                      HasFlag(wxTR_EDIT_LABELS) )
2945                 {
2946                     if ( m_renameTimer )
2947                     {
2948                         if ( m_renameTimer->IsRunning() )
2949                             m_renameTimer->Stop();
2950                     }
2951                     else
2952                     {
2953                         m_renameTimer = new wxTreeRenameTimer( this );
2954                     }
2955
2956                     m_renameTimer->Start( wxTreeRenameTimer::DELAY, TRUE );
2957                 }
2958
2959                 m_lastOnSame = FALSE;
2960             }
2961         }
2962         else // !RightDown() && !LeftUp() ==> LeftDown() || LeftDClick()
2963         {
2964             if ( event.LeftDown() )
2965             {
2966                 m_lastOnSame = item == m_current;
2967             }
2968
2969             if ( flags & wxTREE_HITTEST_ONITEMBUTTON )
2970             {
2971                 // only toggle the item for a single click, double click on
2972                 // the button doesn't do anything (it toggles the item twice)
2973                 if ( event.LeftDown() )
2974                 {
2975                     Toggle( item );
2976                 }
2977
2978                 // don't select the item if the button was clicked
2979                 return;
2980             }
2981
2982             // how should the selection work for this event?
2983             bool is_multiple, extended_select, unselect_others;
2984             EventFlagsToSelType(GetWindowStyleFlag(),
2985                                 event.ShiftDown(),
2986                                 event.ControlDown(),
2987                                 is_multiple, extended_select, unselect_others);
2988
2989             SelectItem(item, unselect_others, extended_select);
2990
2991             // For some reason, Windows isn't recognizing a left double-click,
2992             // so we need to simulate it here.  Allow 200 milliseconds for now.
2993             if ( event.LeftDClick() )
2994             {
2995                 // double clicking should not start editing the item label
2996                 if ( m_renameTimer )
2997                     m_renameTimer->Stop();
2998
2999                 m_lastOnSame = FALSE;
3000
3001                 // send activate event first
3002                 wxTreeEvent nevent( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
3003                 nevent.m_item = (long) item;
3004                 nevent.m_pointDrag = CalcScrolledPosition(pt);
3005                 nevent.SetEventObject( this );
3006                 if ( !GetEventHandler()->ProcessEvent( nevent ) )
3007                 {
3008                     // if the user code didn't process the activate event,
3009                     // handle it ourselves by toggling the item when it is
3010                     // double clicked
3011                     if ( item->HasPlus() )
3012                     {
3013                         Toggle(item);
3014                     }
3015                 }
3016             }
3017         }
3018     }
3019 }
3020
3021 void wxGenericTreeCtrl::OnIdle( wxIdleEvent &WXUNUSED(event) )
3022 {
3023     /* after all changes have been done to the tree control,
3024      * we actually redraw the tree when everything is over */
3025
3026     if (!m_dirty) return;
3027
3028     m_dirty = FALSE;
3029
3030     CalculatePositions();
3031     Refresh();
3032     AdjustMyScrollbars();
3033 }
3034
3035 void wxGenericTreeCtrl::CalculateSize( wxGenericTreeItem *item, wxDC &dc )
3036 {
3037     wxCoord text_w = 0;
3038     wxCoord text_h = 0;
3039
3040     wxTreeItemAttr *attr = item->GetAttributes();
3041     if ( attr && attr->HasFont() )
3042         dc.SetFont(attr->GetFont());
3043     else if ( item->IsBold() )
3044         dc.SetFont(m_boldFont);
3045
3046     dc.GetTextExtent( item->GetText(), &text_w, &text_h );
3047     text_h+=2;
3048
3049     // restore normal font
3050     dc.SetFont( m_normalFont );
3051
3052     int image_h = 0;
3053     int image_w = 0;
3054     int image = item->GetCurrentImage();
3055     if ( image != NO_IMAGE )
3056     {
3057         if ( m_imageListNormal )
3058         {
3059             m_imageListNormal->GetSize( image, image_w, image_h );
3060             image_w += 4;
3061         }
3062     }
3063
3064     int total_h = (image_h > text_h) ? image_h : text_h;
3065
3066     if (total_h < 30)
3067         total_h += 2;            // at least 2 pixels
3068     else
3069         total_h += total_h/10;   // otherwise 10% extra spacing
3070
3071     item->SetHeight(total_h);
3072     if (total_h>m_lineHeight)
3073         m_lineHeight=total_h;
3074
3075     item->SetWidth(image_w+text_w+2);
3076 }
3077
3078 // -----------------------------------------------------------------------------
3079 // for developper : y is now the top of the level
3080 // not the middle of it !
3081 void wxGenericTreeCtrl::CalculateLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y )
3082 {
3083     int x = level*m_indent;
3084     if (!HasFlag(wxTR_HIDE_ROOT))
3085     {
3086         x += m_indent;
3087     }
3088     else if (level == 0)
3089     {
3090         // a hidden root is not evaluated, but its
3091         // children are always calculated
3092         goto Recurse;
3093     }
3094
3095     CalculateSize( item, dc );
3096
3097     // set its position
3098     item->SetX( x+m_spacing );
3099     item->SetY( y );
3100     y += GetLineHeight(item);
3101
3102     if ( !item->IsExpanded() )
3103     {
3104         // we don't need to calculate collapsed branches
3105         return;
3106     }
3107
3108   Recurse:
3109     wxArrayGenericTreeItems& children = item->GetChildren();
3110     size_t n, count = children.Count();
3111     ++level;
3112     for (n = 0; n < count; ++n )
3113         CalculateLevel( children[n], dc, level, y );  // recurse
3114 }
3115
3116 void wxGenericTreeCtrl::CalculatePositions()
3117 {
3118     if ( !m_anchor ) return;
3119
3120     wxClientDC dc(this);
3121     PrepareDC( dc );
3122
3123     dc.SetFont( m_normalFont );
3124
3125     dc.SetPen( m_dottedPen );
3126     //if(GetImageList() == NULL)
3127     // m_lineHeight = (int)(dc.GetCharHeight() + 4);
3128
3129     int y = 2;
3130     CalculateLevel( m_anchor, dc, 0, y ); // start recursion
3131 }
3132
3133 void wxGenericTreeCtrl::RefreshSubtree(wxGenericTreeItem *item)
3134 {
3135     if (m_dirty) return;
3136
3137     wxSize client = GetClientSize();
3138
3139     wxRect rect;
3140     CalcScrolledPosition(0, item->GetY(), NULL, &rect.y);
3141     rect.width = client.x;
3142     rect.height = client.y;
3143
3144     Refresh(TRUE, &rect);
3145
3146     AdjustMyScrollbars();
3147 }
3148
3149 void wxGenericTreeCtrl::RefreshLine( wxGenericTreeItem *item )
3150 {
3151     if (m_dirty) return;
3152
3153     wxRect rect;
3154     CalcScrolledPosition(0, item->GetY(), NULL, &rect.y);
3155     rect.width = GetClientSize().x;
3156     rect.height = GetLineHeight(item); //dc.GetCharHeight() + 6;
3157
3158     Refresh(TRUE, &rect);
3159 }
3160
3161 void wxGenericTreeCtrl::RefreshSelected()
3162 {
3163     // TODO: this is awfully inefficient, we should keep the list of all
3164     //       selected items internally, should be much faster
3165     if ( m_anchor )
3166         RefreshSelectedUnder(m_anchor);
3167 }
3168
3169 void wxGenericTreeCtrl::RefreshSelectedUnder(wxGenericTreeItem *item)
3170 {
3171     if ( item->IsSelected() )
3172         RefreshLine(item);
3173
3174     const wxArrayGenericTreeItems& children = item->GetChildren();
3175     size_t count = children.GetCount();
3176     for ( size_t n = 0; n < count; n++ )
3177     {
3178         RefreshSelectedUnder(children[n]);
3179     }
3180 }
3181
3182 // ----------------------------------------------------------------------------
3183 // changing colours: we need to refresh the tree control
3184 // ----------------------------------------------------------------------------
3185
3186 bool wxGenericTreeCtrl::SetBackgroundColour(const wxColour& colour)
3187 {
3188     if ( !wxWindow::SetBackgroundColour(colour) )
3189         return FALSE;
3190
3191     Refresh();
3192
3193     return TRUE;
3194 }
3195
3196 bool wxGenericTreeCtrl::SetForegroundColour(const wxColour& colour)
3197 {
3198     if ( !wxWindow::SetForegroundColour(colour) )
3199         return FALSE;
3200
3201     Refresh();
3202
3203     return TRUE;
3204 }
3205
3206 #endif // wxUSE_TREECTRL