src/generic/treectlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        treectlg.cpp
   3 // Purpose:     generic tree control implementation
   4 // Author:      Robert Roebling
   5 // Created:     01/02/97
   6 // Modified:    22/10/98 - almost total rewrite, simpler interface (VZ)
   7 // Id:          $Id$
   8 // Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // =============================================================================
  13 // declarations
  14 // =============================================================================
  15
  16 // -----------------------------------------------------------------------------
  17 // headers
  18 // -----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21   #pragma implementation "treectlg.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_TREECTRL
  32
  33 #include "wx/treebase.h"
  34 #include "wx/generic/treectlg.h"
  35 #include "wx/timer.h"
  36 #include "wx/textctrl.h"
  37 #include "wx/imaglist.h"
  38 #include "wx/settings.h"
  39 #include "wx/dcclient.h"
  40
  41 // -----------------------------------------------------------------------------
  42 // array types
  43 // -----------------------------------------------------------------------------
  44
  45 class WXDLLEXPORT wxGenericTreeItem;
  46
  47 WX_DEFINE_EXPORTED_ARRAY(wxGenericTreeItem *, wxArrayGenericTreeItems);
  48 //WX_DEFINE_OBJARRAY(wxArrayTreeItemIds);
  49
  50 // ----------------------------------------------------------------------------
  51 // constants
  52 // ----------------------------------------------------------------------------
  53
  54 static const int NO_IMAGE = -1;
  55
  56 #define PIXELS_PER_UNIT 10
  57
  58 // ----------------------------------------------------------------------------
  59 // Aqua arrows
  60 // ----------------------------------------------------------------------------
  61
  62 /* XPM */
  63 static const char *aqua_arrow_right[] = {
  64 /* columns rows colors chars-per-pixel */
  65 "13 11 4 1",
  66 "  c None",
  67 "b c #C0C0C0",
  68 "c c #707070",
  69 "d c #A0A0A0",
  70 /* pixels */
  71 "    b        ",
  72 "    ddb      ",
  73 "    cccdb    ",
  74 "    cccccd   ",
  75 "    ccccccdb ",
  76 "    ccccccccd",
  77 "    ccccccdb ",
  78 "    cccccb   ",
  79 "    cccdb    ",
  80 "    ddb      ",
  81 "    b        "
  82 };
  83
  84 /* XPM */
  85 static const char *aqua_arrow_down[] = {
  86 /* columns rows colors chars-per-pixel */
  87 "13 11 4 1",
  88 "  c None",
  89 "b c #C0C0C0",
  90 "c c #707070",
  91 "d c #A0A0A0",
  92 /* pixels */
  93 "             ",
  94 "             ",
  95 " bdcccccccdb ",
  96 "  dcccccccd  ",
  97 "  bcccccccb  ",
  98 "   dcccccd   ",
  99 "   bcccccb   ",
 100 "    bcccd    ",
 101 "     dcd     ",
 102 "     bcb     ",
 103 "      d      "
 104 };
 105
 106 // -----------------------------------------------------------------------------
 107 // private classes
 108 // -----------------------------------------------------------------------------
 109
 110 // timer used for enabling in-place edit
 111 class WXDLLEXPORT wxTreeRenameTimer: public wxTimer
 112 {
 113 public:
 114     wxTreeRenameTimer( wxGenericTreeCtrl *owner );
 115
 116     void Notify();
 117
 118 private:
 119     wxGenericTreeCtrl   *m_owner;
 120 };
 121
 122 // control used for in-place edit
 123 class WXDLLEXPORT wxTreeTextCtrl: public wxTextCtrl
 124 {
 125 public:
 126     wxTreeTextCtrl( wxWindow *parent,
 127                     const wxWindowID id,
 128                     bool *accept,
 129                     wxString *res,
 130                     wxGenericTreeCtrl *owner,
 131                     const wxString &value = wxEmptyString,
 132                     const wxPoint &pos = wxDefaultPosition,
 133                     const wxSize &size = wxDefaultSize,
 134                     int style = wxSIMPLE_BORDER,
 135                     const wxValidator& validator = wxDefaultValidator,
 136                     const wxString &name = wxTextCtrlNameStr );
 137
 138     void OnChar( wxKeyEvent &event );
 139     void OnKeyUp( wxKeyEvent &event );
 140     void OnKillFocus( wxFocusEvent &event );
 141
 142 private:
 143     bool               *m_accept;
 144     wxString           *m_res;
 145     wxGenericTreeCtrl  *m_owner;
 146     wxString            m_startValue;
 147     bool                m_finished;
 148
 149     DECLARE_EVENT_TABLE()
 150 };
 151
 152 // a tree item
 153 class WXDLLEXPORT wxGenericTreeItem
 154 {
 155 public:
 156     // ctors & dtor
 157     wxGenericTreeItem() { m_data = NULL; }
 158     wxGenericTreeItem( wxGenericTreeItem *parent,
 159                        const wxString& text,
 160                        int image,
 161                        int selImage,
 162                        wxTreeItemData *data );
 163
 164     ~wxGenericTreeItem();
 165
 166     // trivial accessors
 167     wxArrayGenericTreeItems& GetChildren() { return m_children; }
 168
 169     const wxString& GetText() const { return m_text; }
 170     int GetImage(wxTreeItemIcon which = wxTreeItemIcon_Normal) const
 171         { return m_images[which]; }
 172     wxTreeItemData *GetData() const { return m_data; }
 173
 174     // returns the current image for the item (depending on its
 175     // selected/expanded/whatever state)
 176     int GetCurrentImage() const;
 177
 178     void SetText( const wxString &text );
 179     void SetImage(int image, wxTreeItemIcon which) { m_images[which] = image; }
 180     void SetData(wxTreeItemData *data) { m_data = data; }
 181
 182     void SetHasPlus(bool has = TRUE) { m_hasPlus = has; }
 183
 184     void SetBold(bool bold) { m_isBold = bold; }
 185
 186     int GetX() const { return m_x; }
 187     int GetY() const { return m_y; }
 188
 189     void SetX(int x) { m_x = x; }
 190     void SetY(int y) { m_y = y; }
 191
 192     int  GetHeight() const { return m_height; }
 193     int  GetWidth()  const { return m_width; }
 194
 195     void SetHeight(int h) { m_height = h; }
 196     void SetWidth(int w) { m_width = w; }
 197
 198     wxGenericTreeItem *GetParent() const { return m_parent; }
 199
 200     // operations
 201         // deletes all children notifying the treectrl about it if !NULL
 202         // pointer given
 203     void DeleteChildren(wxGenericTreeCtrl *tree = NULL);
 204
 205     // get count of all children (and grand children if 'recursively')
 206     size_t GetChildrenCount(bool recursively = TRUE) const;
 207
 208     void Insert(wxGenericTreeItem *child, size_t index)
 209     { m_children.Insert(child, index); }
 210
 211     void GetSize( int &x, int &y, const wxGenericTreeCtrl* );
 212
 213         // return the item at given position (or NULL if no item), onButton is
 214         // TRUE if the point belongs to the item's button, otherwise it lies
 215         // on the button's label
 216     wxGenericTreeItem *HitTest( const wxPoint& point,
 217                                 const wxGenericTreeCtrl *,
 218                                 int &flags,
 219                                 int level );
 220
 221     void Expand() { m_isCollapsed = FALSE; }
 222     void Collapse() { m_isCollapsed = TRUE; }
 223
 224     void SetHilight( bool set = TRUE ) { m_hasHilight = set; }
 225
 226     // status inquiries
 227     bool HasChildren() const { return !m_children.IsEmpty(); }
 228     bool IsSelected()  const { return m_hasHilight != 0; }
 229     bool IsExpanded()  const { return !m_isCollapsed; }
 230     bool HasPlus()     const { return m_hasPlus || HasChildren(); }
 231     bool IsBold()      const { return m_isBold != 0; }
 232
 233     // attributes
 234         // get them - may be NULL
 235     wxTreeItemAttr *GetAttributes() const { return m_attr; }
 236         // get them ensuring that the pointer is not NULL
 237     wxTreeItemAttr& Attr()
 238     {
 239         if ( !m_attr )
 240         {
 241             m_attr = new wxTreeItemAttr;
 242             m_ownsAttr = TRUE;
 243         }
 244         return *m_attr;
 245     }
 246         // set them
 247     void SetAttributes(wxTreeItemAttr *attr)
 248     {
 249         if ( m_ownsAttr ) delete m_attr;
 250         m_attr = attr;
 251         m_ownsAttr = FALSE;
 252     }
 253         // set them and delete when done
 254     void AssignAttributes(wxTreeItemAttr *attr)
 255     {
 256         SetAttributes(attr);
 257         m_ownsAttr = TRUE;
 258     }
 259
 260 private:
 261     // since there can be very many of these, we save size by chosing
 262     // the smallest representation for the elements and by ordering
 263     // the members to avoid padding.
 264     wxString            m_text;         // label to be rendered for item
 265
 266     wxTreeItemData     *m_data;         // user-provided data
 267
 268     wxArrayGenericTreeItems m_children; // list of children
 269     wxGenericTreeItem  *m_parent;       // parent of this item
 270
 271     wxTreeItemAttr     *m_attr;         // attributes???
 272
 273     // tree ctrl images for the normal, selected, expanded and
 274     // expanded+selected states
 275     short               m_images[wxTreeItemIcon_Max];
 276
 277     wxCoord             m_x;            // (virtual) offset from top
 278     short               m_y;            // (virtual) offset from left
 279     short               m_width;        // width of this item
 280     unsigned char       m_height;       // height of this item
 281
 282     // use bitfields to save size
 283     int                 m_isCollapsed :1;
 284     int                 m_hasHilight  :1; // same as focused
 285     int                 m_hasPlus     :1; // used for item which doesn't have
 286                                           // children but has a [+] button
 287     int                 m_isBold      :1; // render the label in bold font
 288     int                 m_ownsAttr    :1; // delete attribute when done
 289 };
 290
 291 // =============================================================================
 292 // implementation
 293 // =============================================================================
 294
 295 // ----------------------------------------------------------------------------
 296 // private functions
 297 // ----------------------------------------------------------------------------
 298
 299 // translate the key or mouse event flags to the type of selection we're
 300 // dealing with
 301 static void EventFlagsToSelType(long style,
 302                                 bool shiftDown,
 303                                 bool ctrlDown,
 304                                 bool &is_multiple,
 305                                 bool &extended_select,
 306                                 bool &unselect_others)
 307 {
 308     is_multiple = (style & wxTR_MULTIPLE) != 0;
 309     extended_select = shiftDown && is_multiple;
 310     unselect_others = !(extended_select || (ctrlDown && is_multiple));
 311 }
 312
 313 // -----------------------------------------------------------------------------
 314 // wxTreeRenameTimer (internal)
 315 // -----------------------------------------------------------------------------
 316
 317 wxTreeRenameTimer::wxTreeRenameTimer( wxGenericTreeCtrl *owner )
 318 {
 319     m_owner = owner;
 320 }
 321
 322 void wxTreeRenameTimer::Notify()
 323 {
 324     m_owner->OnRenameTimer();
 325 }
 326
 327 //-----------------------------------------------------------------------------
 328 // wxTreeTextCtrl (internal)
 329 //-----------------------------------------------------------------------------
 330
 331 BEGIN_EVENT_TABLE(wxTreeTextCtrl,wxTextCtrl)
 332     EVT_CHAR           (wxTreeTextCtrl::OnChar)
 333     EVT_KEY_UP         (wxTreeTextCtrl::OnKeyUp)
 334     EVT_KILL_FOCUS     (wxTreeTextCtrl::OnKillFocus)
 335 END_EVENT_TABLE()
 336
 337 wxTreeTextCtrl::wxTreeTextCtrl( wxWindow *parent,
 338                                 const wxWindowID id,
 339                                 bool *accept,
 340                                 wxString *res,
 341                                 wxGenericTreeCtrl *owner,
 342                                 const wxString &value,
 343                                 const wxPoint &pos,
 344                                 const wxSize &size,
 345                                 int style,
 346                                 const wxValidator& validator,
 347                                 const wxString &name )
 348     : wxTextCtrl( parent, id, value, pos, size, style, validator, name )
 349 {
 350     m_res = res;
 351     m_accept = accept;
 352     m_owner = owner;
 353     (*m_accept) = FALSE;
 354     (*m_res) = wxEmptyString;
 355     m_startValue = value;
 356     m_finished = FALSE;
 357 }
 358
 359 void wxTreeTextCtrl::OnChar( wxKeyEvent &event )
 360 {
 361     if (event.m_keyCode == WXK_RETURN)
 362     {
 363         (*m_accept) = TRUE;
 364         (*m_res) = GetValue();
 365
 366         if ((*m_res) != m_startValue)
 367             m_owner->OnRenameAccept();
 368
 369         if (!wxPendingDelete.Member(this))
 370             wxPendingDelete.Append(this);
 371
 372         m_finished = TRUE;
 373         m_owner->SetFocus(); // This doesn't work. TODO.
 374
 375         return;
 376     }
 377     if (event.m_keyCode == WXK_ESCAPE)
 378     {
 379         (*m_accept) = FALSE;
 380         (*m_res) = "";
 381
 382         if (!wxPendingDelete.Member(this))
 383             wxPendingDelete.Append(this);
 384
 385         m_finished = TRUE;
 386         m_owner->SetFocus(); // This doesn't work. TODO.
 387
 388         return;
 389     }
 390     event.Skip();
 391 }
 392
 393 void wxTreeTextCtrl::OnKeyUp( wxKeyEvent &event )
 394 {
 395     if (m_finished)
 396     {
 397         event.Skip();
 398         return;
 399     }
 400
 401     // auto-grow the textctrl:
 402     wxSize parentSize = m_owner->GetSize();
 403     wxPoint myPos = GetPosition();
 404     wxSize mySize = GetSize();
 405     int sx, sy;
 406     GetTextExtent(GetValue() + _T("M"), &sx, &sy);
 407     if (myPos.x + sx > parentSize.x) sx = parentSize.x - myPos.x;
 408     if (mySize.x > sx) sx = mySize.x;
 409     SetSize(sx, -1);
 410
 411     event.Skip();
 412 }
 413
 414 void wxTreeTextCtrl::OnKillFocus( wxFocusEvent &event )
 415 {
 416     if (m_finished)
 417     {
 418         event.Skip();
 419         return;
 420     }
 421
 422     if (!wxPendingDelete.Member(this))
 423         wxPendingDelete.Append(this);
 424
 425     (*m_accept) = TRUE;
 426     (*m_res) = GetValue();
 427
 428     if ((*m_res) != m_startValue)
 429         m_owner->OnRenameAccept();
 430 }
 431
 432 // -----------------------------------------------------------------------------
 433 // wxGenericTreeItem
 434 // -----------------------------------------------------------------------------
 435
 436 wxGenericTreeItem::wxGenericTreeItem(wxGenericTreeItem *parent,
 437                                      const wxString& text,
 438                                      int image, int selImage,
 439                                      wxTreeItemData *data)
 440                  : m_text(text)
 441 {
 442     m_images[wxTreeItemIcon_Normal] = image;
 443     m_images[wxTreeItemIcon_Selected] = selImage;
 444     m_images[wxTreeItemIcon_Expanded] = NO_IMAGE;
 445     m_images[wxTreeItemIcon_SelectedExpanded] = NO_IMAGE;
 446
 447     m_data = data;
 448     m_x = m_y = 0;
 449
 450     m_isCollapsed = TRUE;
 451     m_hasHilight = FALSE;
 452     m_hasPlus = FALSE;
 453     m_isBold = FALSE;
 454
 455     m_parent = parent;
 456
 457     m_attr = (wxTreeItemAttr *)NULL;
 458     m_ownsAttr = FALSE;
 459
 460     // We don't know the height here yet.
 461     m_width = 0;
 462     m_height = 0;
 463 }
 464
 465 wxGenericTreeItem::~wxGenericTreeItem()
 466 {
 467     delete m_data;
 468
 469     if (m_ownsAttr) delete m_attr;
 470
 471     wxASSERT_MSG( m_children.IsEmpty(),
 472                   wxT("please call DeleteChildren() before deleting the item") );
 473 }
 474
 475 void wxGenericTreeItem::DeleteChildren(wxGenericTreeCtrl *tree)
 476 {
 477     size_t count = m_children.Count();
 478     for ( size_t n = 0; n < count; n++ )
 479     {
 480         wxGenericTreeItem *child = m_children[n];
 481         if (tree)
 482             tree->SendDeleteEvent(child);
 483
 484         child->DeleteChildren(tree);
 485         delete child;
 486     }
 487
 488     m_children.Empty();
 489 }
 490
 491 void wxGenericTreeItem::SetText( const wxString &text )
 492 {
 493     m_text = text;
 494 }
 495
 496 size_t wxGenericTreeItem::GetChildrenCount(bool recursively) const
 497 {
 498     size_t count = m_children.Count();
 499     if ( !recursively )
 500         return count;
 501
 502     size_t total = count;
 503     for (size_t n = 0; n < count; ++n)
 504     {
 505         total += m_children[n]->GetChildrenCount();
 506     }
 507
 508     return total;
 509 }
 510
 511 void wxGenericTreeItem::GetSize( int &x, int &y,
 512                                  const wxGenericTreeCtrl *theButton )
 513 {
 514     int bottomY=m_y+theButton->GetLineHeight(this);
 515     if ( y < bottomY ) y = bottomY;
 516     int width = m_x +  m_width;
 517     if ( x < width ) x = width;
 518
 519     if (IsExpanded())
 520     {
 521         size_t count = m_children.Count();
 522         for ( size_t n = 0; n < count; ++n )
 523         {
 524             m_children[n]->GetSize( x, y, theButton );
 525         }
 526     }
 527 }
 528
 529 wxGenericTreeItem *wxGenericTreeItem::HitTest(const wxPoint& point,
 530                                               const wxGenericTreeCtrl *theCtrl,
 531                                               int &flags,
 532                                               int level)
 533 {
 534     // for a hidden root node, don't evaluate it, but do evaluate children
 535     if ( !(level == 0 && theCtrl->HasFlag(wxTR_HIDE_ROOT)) )
 536     {
 537         // evaluate the item
 538         int h = theCtrl->GetLineHeight(this);
 539         if ((point.y > m_y) && (point.y < m_y + h))
 540         {
 541             int y_mid = m_y + h/2;
 542             if (point.y < y_mid )
 543                 flags |= wxTREE_HITTEST_ONITEMUPPERPART;
 544             else
 545                 flags |= wxTREE_HITTEST_ONITEMLOWERPART;
 546
 547             // 5 is the size of the plus sign
 548             int xCross = m_x - theCtrl->GetSpacing();
 549             if ((point.x > xCross-5) && (point.x < xCross+5) &&
 550                 (point.y > y_mid-5) && (point.y < y_mid+5) &&
 551                 HasPlus() && theCtrl->HasButtons() )
 552             {
 553                 flags |= wxTREE_HITTEST_ONITEMBUTTON;
 554                 return this;
 555             }
 556
 557             if ((point.x >= m_x) && (point.x <= m_x+m_width))
 558             {
 559                 int image_w = -1;
 560                 int image_h;
 561
 562                 // assuming every image (normal and selected) has the same size!
 563                 if ( (GetImage() != NO_IMAGE) && theCtrl->m_imageListNormal )
 564                     theCtrl->m_imageListNormal->GetSize(GetImage(),
 565                                                         image_w, image_h);
 566
 567                 if ((image_w != -1) && (point.x <= m_x + image_w + 1))
 568                     flags |= wxTREE_HITTEST_ONITEMICON;
 569                 else
 570                     flags |= wxTREE_HITTEST_ONITEMLABEL;
 571
 572                 return this;
 573             }
 574
 575             if (point.x < m_x)
 576                 flags |= wxTREE_HITTEST_ONITEMINDENT;
 577             if (point.x > m_x+m_width)
 578                 flags |= wxTREE_HITTEST_ONITEMRIGHT;
 579
 580             return this;
 581         }
 582
 583         // if children are expanded, fall through to evaluate them
 584         if (m_isCollapsed) return (wxGenericTreeItem*) NULL;
 585     }
 586
 587     // evaluate children
 588     size_t count = m_children.Count();
 589     for ( size_t n = 0; n < count; n++ )
 590     {
 591         wxGenericTreeItem *res = m_children[n]->HitTest( point,
 592                                                          theCtrl,
 593                                                          flags,
 594                                                          level + 1 );
 595         if ( res != NULL )
 596             return res;
 597     }
 598
 599     return (wxGenericTreeItem*) NULL;
 600 }
 601
 602 int wxGenericTreeItem::GetCurrentImage() const
 603 {
 604     int image = NO_IMAGE;
 605     if ( IsExpanded() )
 606     {
 607         if ( IsSelected() )
 608         {
 609             image = GetImage(wxTreeItemIcon_SelectedExpanded);
 610         }
 611
 612         if ( image == NO_IMAGE )
 613         {
 614             // we usually fall back to the normal item, but try just the
 615             // expanded one (and not selected) first in this case
 616             image = GetImage(wxTreeItemIcon_Expanded);
 617         }
 618     }
 619     else // not expanded
 620     {
 621         if ( IsSelected() )
 622             image = GetImage(wxTreeItemIcon_Selected);
 623     }
 624
 625     // maybe it doesn't have the specific image we want,
 626     // try the default one instead
 627     if ( image == NO_IMAGE ) image = GetImage();
 628
 629     return image;
 630 }
 631
 632 // -----------------------------------------------------------------------------
 633 // wxGenericTreeCtrl implementation
 634 // -----------------------------------------------------------------------------
 635
 636 IMPLEMENT_DYNAMIC_CLASS(wxGenericTreeCtrl, wxScrolledWindow)
 637
 638 BEGIN_EVENT_TABLE(wxGenericTreeCtrl,wxScrolledWindow)
 639     EVT_PAINT          (wxGenericTreeCtrl::OnPaint)
 640     EVT_MOUSE_EVENTS   (wxGenericTreeCtrl::OnMouse)
 641     EVT_CHAR           (wxGenericTreeCtrl::OnChar)
 642     EVT_SET_FOCUS      (wxGenericTreeCtrl::OnSetFocus)
 643     EVT_KILL_FOCUS     (wxGenericTreeCtrl::OnKillFocus)
 644     EVT_IDLE           (wxGenericTreeCtrl::OnIdle)
 645 END_EVENT_TABLE()
 646
 647 #if !defined(__WXMSW__) || defined(__WIN16__) || defined(__WXUNIVERSAL__)
 648 /*
 649  * wxTreeCtrl has to be a real class or we have problems with
 650  * the run-time information.
 651  */
 652
 653 IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxGenericTreeCtrl)
 654 #endif
 655
 656 // -----------------------------------------------------------------------------
 657 // construction/destruction
 658 // -----------------------------------------------------------------------------
 659
 660 void wxGenericTreeCtrl::Init()
 661 {
 662     m_current = m_key_current = m_anchor = (wxGenericTreeItem *) NULL;
 663     m_hasFocus = FALSE;
 664     m_dirty = FALSE;
 665
 666     m_lineHeight = 10;
 667     m_indent = 15;
 668     m_spacing = 18;
 669
 670     m_hilightBrush = new wxBrush
 671                          (
 672                             wxSystemSettings::GetColour
 673                             (
 674                                 wxSYS_COLOUR_HIGHLIGHT
 675                             ),
 676                             wxSOLID
 677                          );
 678
 679     m_hilightUnfocusedBrush = new wxBrush
 680                               (
 681                                  wxSystemSettings::GetColour
 682                                  (
 683                                      wxSYS_COLOUR_BTNSHADOW
 684                                  ),
 685                                  wxSOLID
 686                               );
 687
 688     m_imageListNormal = m_imageListButtons =
 689     m_imageListState = (wxImageList *) NULL;
 690     m_ownsImageListNormal = m_ownsImageListButtons =
 691     m_ownsImageListState = FALSE;
 692
 693     m_dragCount = 0;
 694     m_isDragging = FALSE;
 695     m_dropTarget = m_oldSelection = (wxGenericTreeItem *)NULL;
 696
 697     m_renameTimer = new wxTreeRenameTimer( this );
 698     m_lastOnSame = FALSE;
 699
 700     m_normalFont = wxSystemSettings::GetFont( wxSYS_DEFAULT_GUI_FONT );
 701     m_boldFont = wxFont( m_normalFont.GetPointSize(),
 702                          m_normalFont.GetFamily(),
 703                          m_normalFont.GetStyle(),
 704                          wxBOLD,
 705                          m_normalFont.GetUnderlined());
 706 }
 707
 708 bool wxGenericTreeCtrl::Create(wxWindow *parent,
 709                                wxWindowID id,
 710                                const wxPoint& pos,
 711                                const wxSize& size,
 712                                long style,
 713                                const wxValidator &validator,
 714                                const wxString& name )
 715 {
 716 #ifdef __WXMAC__
 717     int major,minor;
 718     wxGetOsVersion( &major, &minor );
 719
 720     if (style & wxTR_HAS_BUTTONS) style |= wxTR_MAC_BUTTONS;
 721     if (style & wxTR_HAS_BUTTONS) style &= ~wxTR_HAS_BUTTONS;
 722     style &= ~wxTR_LINES_AT_ROOT;
 723     style |= wxTR_NO_LINES;
 724     if (major < 10)
 725         style |= wxTR_ROW_LINES;
 726     if (major >= 10)
 727         style |= wxTR_AQUA_BUTTONS;
 728 #endif
 729
 730     if (style & wxTR_AQUA_BUTTONS)
 731     {
 732         m_arrowRight = new wxBitmap( aqua_arrow_right );
 733         m_arrowDown = new wxBitmap( aqua_arrow_down );
 734     }
 735     else
 736     {
 737         m_arrowRight = NULL;
 738         m_arrowDown = NULL;
 739     }
 740
 741     wxScrolledWindow::Create( parent, id, pos, size,
 742                               style|wxHSCROLL|wxVSCROLL, name );
 743
 744     // If the tree display has no buttons, but does have
 745     // connecting lines, we can use a narrower layout.
 746     // It may not be a good idea to force this...
 747     if (!HasButtons() && !HasFlag(wxTR_NO_LINES))
 748     {
 749         m_indent= 10;
 750         m_spacing = 10;
 751     }
 752
 753 #if wxUSE_VALIDATORS
 754     SetValidator( validator );
 755 #endif
 756
 757     SetForegroundColour( wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOWTEXT) );
 758     SetBackgroundColour( wxSystemSettings::GetColour(wxSYS_COLOUR_LISTBOX) );
 759
 760 //  m_dottedPen = wxPen( "grey", 0, wxDOT );  too slow under XFree86
 761     m_dottedPen = wxPen( wxT("grey"), 0, 0 );
 762
 763     return TRUE;
 764 }
 765
 766 wxGenericTreeCtrl::~wxGenericTreeCtrl()
 767 {
 768     delete m_hilightBrush;
 769     delete m_hilightUnfocusedBrush;
 770
 771     if (m_arrowRight) delete m_arrowRight;
 772     if (m_arrowDown) delete m_arrowDown;
 773
 774     DeleteAllItems();
 775
 776     delete m_renameTimer;
 777     if (m_ownsImageListNormal) delete m_imageListNormal;
 778     if (m_ownsImageListState) delete m_imageListState;
 779     if (m_ownsImageListButtons) delete m_imageListButtons;
 780 }
 781
 782 // -----------------------------------------------------------------------------
 783 // accessors
 784 // -----------------------------------------------------------------------------
 785
 786 size_t wxGenericTreeCtrl::GetCount() const
 787 {
 788     return m_anchor == NULL ? 0u : m_anchor->GetChildrenCount();
 789 }
 790
 791 void wxGenericTreeCtrl::SetIndent(unsigned int indent)
 792 {
 793     m_indent = (unsigned short) indent;
 794     m_dirty = TRUE;
 795 }
 796
 797 void wxGenericTreeCtrl::SetSpacing(unsigned int spacing)
 798 {
 799     m_spacing = (unsigned short) spacing;
 800     m_dirty = TRUE;
 801 }
 802
 803 size_t wxGenericTreeCtrl::GetChildrenCount(const wxTreeItemId& item, bool recursively)
 804 {
 805     wxCHECK_MSG( item.IsOk(), 0u, wxT("invalid tree item") );
 806
 807     return ((wxGenericTreeItem*) item.m_pItem)->GetChildrenCount(recursively);
 808 }
 809
 810 void wxGenericTreeCtrl::SetWindowStyle(const long styles)
 811 {
 812         // right now, just sets the styles.  Eventually, we may
 813         // want to update the inherited styles, but right now
 814         // none of the parents has updatable styles
 815     m_windowStyle = styles;
 816     m_dirty = TRUE;
 817 }
 818
 819 // -----------------------------------------------------------------------------
 820 // functions to work with tree items
 821 // -----------------------------------------------------------------------------
 822
 823 wxString wxGenericTreeCtrl::GetItemText(const wxTreeItemId& item) const
 824 {
 825     wxCHECK_MSG( item.IsOk(), wxT(""), wxT("invalid tree item") );
 826
 827     return ((wxGenericTreeItem*) item.m_pItem)->GetText();
 828 }
 829
 830 int wxGenericTreeCtrl::GetItemImage(const wxTreeItemId& item,
 831                              wxTreeItemIcon which) const
 832 {
 833     wxCHECK_MSG( item.IsOk(), -1, wxT("invalid tree item") );
 834
 835     return ((wxGenericTreeItem*) item.m_pItem)->GetImage(which);
 836 }
 837
 838 wxTreeItemData *wxGenericTreeCtrl::GetItemData(const wxTreeItemId& item) const
 839 {
 840     wxCHECK_MSG( item.IsOk(), NULL, wxT("invalid tree item") );
 841
 842     return ((wxGenericTreeItem*) item.m_pItem)->GetData();
 843 }
 844
 845 void wxGenericTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
 846 {
 847     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 848
 849     wxClientDC dc(this);
 850     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 851     pItem->SetText(text);
 852     CalculateSize(pItem, dc);
 853     RefreshLine(pItem);
 854 }
 855
 856 void wxGenericTreeCtrl::SetItemImage(const wxTreeItemId& item,
 857                               int image,
 858                               wxTreeItemIcon which)
 859 {
 860     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 861
 862     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 863     pItem->SetImage(image, which);
 864
 865     wxClientDC dc(this);
 866     CalculateSize(pItem, dc);
 867     RefreshLine(pItem);
 868 }
 869
 870 void wxGenericTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)
 871 {
 872     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 873
 874     ((wxGenericTreeItem*) item.m_pItem)->SetData(data);
 875 }
 876
 877 void wxGenericTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
 878 {
 879     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 880
 881     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 882     pItem->SetHasPlus(has);
 883     RefreshLine(pItem);
 884 }
 885
 886 void wxGenericTreeCtrl::SetItemBold(const wxTreeItemId& item, bool bold)
 887 {
 888     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 889
 890     // avoid redrawing the tree if no real change
 891     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 892     if ( pItem->IsBold() != bold )
 893     {
 894         pItem->SetBold(bold);
 895         RefreshLine(pItem);
 896     }
 897 }
 898
 899 void wxGenericTreeCtrl::SetItemTextColour(const wxTreeItemId& item,
 900                                    const wxColour& col)
 901 {
 902     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 903
 904     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 905     pItem->Attr().SetTextColour(col);
 906     RefreshLine(pItem);
 907 }
 908
 909 void wxGenericTreeCtrl::SetItemBackgroundColour(const wxTreeItemId& item,
 910                                          const wxColour& col)
 911 {
 912     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 913
 914     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 915     pItem->Attr().SetBackgroundColour(col);
 916     RefreshLine(pItem);
 917 }
 918
 919 void wxGenericTreeCtrl::SetItemFont(const wxTreeItemId& item, const wxFont& font)
 920 {
 921     wxCHECK_RET( item.IsOk(), wxT("invalid tree item") );
 922
 923     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 924     pItem->Attr().SetFont(font);
 925     RefreshLine(pItem);
 926 }
 927
 928 bool wxGenericTreeCtrl::SetFont( const wxFont &font )
 929 {
 930     wxScrolledWindow::SetFont(font);
 931
 932     m_normalFont = font ;
 933     m_boldFont = wxFont( m_normalFont.GetPointSize(),
 934                             m_normalFont.GetFamily(),
 935                             m_normalFont.GetStyle(),
 936                             wxBOLD,
 937                             m_normalFont.GetUnderlined());
 938
 939     return TRUE;
 940 }
 941
 942
 943 // -----------------------------------------------------------------------------
 944 // item status inquiries
 945 // -----------------------------------------------------------------------------
 946
 947 bool wxGenericTreeCtrl::IsVisible(const wxTreeItemId& item) const
 948 {
 949     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
 950
 951     // An item is only visible if it's not a descendant of a collapsed item
 952     wxGenericTreeItem *pItem = (wxGenericTreeItem*) item.m_pItem;
 953     wxGenericTreeItem* parent = pItem->GetParent();
 954     while (parent)
 955     {
 956         if (!parent->IsExpanded())
 957             return FALSE;
 958         parent = parent->GetParent();
 959     }
 960
 961     int startX, startY;
 962     GetViewStart(& startX, & startY);
 963
 964     wxSize clientSize = GetClientSize();
 965
 966     wxRect rect;
 967     if (!GetBoundingRect(item, rect))
 968         return FALSE;
 969     if (rect.GetWidth() == 0 || rect.GetHeight() == 0)
 970         return FALSE;
 971     if (rect.GetBottom() < 0 || rect.GetTop() > clientSize.y)
 972         return FALSE;
 973     if (rect.GetRight() < 0 || rect.GetLeft() > clientSize.x)
 974         return FALSE;
 975
 976     return TRUE;
 977 }
 978
 979 bool wxGenericTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
 980 {
 981     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
 982
 983     // consider that the item does have children if it has the "+" button: it
 984     // might not have them (if it had never been expanded yet) but then it
 985     // could have them as well and it's better to err on this side rather than
 986     // disabling some operations which are restricted to the items with
 987     // children for an item which does have them
 988     return ((wxGenericTreeItem*) item.m_pItem)->HasPlus();
 989 }
 990
 991 bool wxGenericTreeCtrl::IsExpanded(const wxTreeItemId& item) const
 992 {
 993     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
 994
 995     return ((wxGenericTreeItem*) item.m_pItem)->IsExpanded();
 996 }
 997
 998 bool wxGenericTreeCtrl::IsSelected(const wxTreeItemId& item) const
 999 {
1000     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
1001
1002     return ((wxGenericTreeItem*) item.m_pItem)->IsSelected();
1003 }
1004
1005 bool wxGenericTreeCtrl::IsBold(const wxTreeItemId& item) const
1006 {
1007     wxCHECK_MSG( item.IsOk(), FALSE, wxT("invalid tree item") );
1008
1009     return ((wxGenericTreeItem*) item.m_pItem)->IsBold();
1010 }
1011
1012 // -----------------------------------------------------------------------------
1013 // navigation
1014 // -----------------------------------------------------------------------------
1015
1016 wxTreeItemId wxGenericTreeCtrl::GetParent(const wxTreeItemId& item) const
1017 {
1018     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1019
1020     return ((wxGenericTreeItem*) item.m_pItem)->GetParent();
1021 }
1022
1023 wxTreeItemId wxGenericTreeCtrl::GetFirstChild(const wxTreeItemId& item, long& cookie) const
1024 {
1025     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1026
1027     cookie = 0;
1028     return GetNextChild(item, cookie);
1029 }
1030
1031 wxTreeItemId wxGenericTreeCtrl::GetNextChild(const wxTreeItemId& item, long& cookie) const
1032 {
1033     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1034
1035     wxArrayGenericTreeItems& children = ((wxGenericTreeItem*) item.m_pItem)->GetChildren();
1036     if ( (size_t)cookie < children.Count() )
1037     {
1038         return children.Item((size_t)cookie++);
1039     }
1040     else
1041     {
1042         // there are no more of them
1043         return wxTreeItemId();
1044     }
1045 }
1046
1047 wxTreeItemId wxGenericTreeCtrl::GetLastChild(const wxTreeItemId& item) const
1048 {
1049     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1050
1051     wxArrayGenericTreeItems& children = ((wxGenericTreeItem*) item.m_pItem)->GetChildren();
1052     return (children.IsEmpty() ? wxTreeItemId() : wxTreeItemId(children.Last()));
1053 }
1054
1055 wxTreeItemId wxGenericTreeCtrl::GetNextSibling(const wxTreeItemId& item) const
1056 {
1057     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1058
1059     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
1060     wxGenericTreeItem *parent = i->GetParent();
1061     if ( parent == NULL )
1062     {
1063         // root item doesn't have any siblings
1064         return wxTreeItemId();
1065     }
1066
1067     wxArrayGenericTreeItems& siblings = parent->GetChildren();
1068     int index = siblings.Index(i);
1069     wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
1070
1071     size_t n = (size_t)(index + 1);
1072     return n == siblings.Count() ? wxTreeItemId() : wxTreeItemId(siblings[n]);
1073 }
1074
1075 wxTreeItemId wxGenericTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const
1076 {
1077     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1078
1079     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
1080     wxGenericTreeItem *parent = i->GetParent();
1081     if ( parent == NULL )
1082     {
1083         // root item doesn't have any siblings
1084         return wxTreeItemId();
1085     }
1086
1087     wxArrayGenericTreeItems& siblings = parent->GetChildren();
1088     int index = siblings.Index(i);
1089     wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
1090
1091     return index == 0 ? wxTreeItemId()
1092                       : wxTreeItemId(siblings[(size_t)(index - 1)]);
1093 }
1094
1095 // Only for internal use right now, but should probably be public
1096 wxTreeItemId wxGenericTreeCtrl::GetNext(const wxTreeItemId& item) const
1097 {
1098     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1099
1100     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
1101
1102     // First see if there are any children.
1103     wxArrayGenericTreeItems& children = i->GetChildren();
1104     if (children.GetCount() > 0)
1105     {
1106          return children.Item(0);
1107     }
1108     else
1109     {
1110          // Try a sibling of this or ancestor instead
1111          wxTreeItemId p = item;
1112          wxTreeItemId toFind;
1113          do
1114          {
1115               toFind = GetNextSibling(p);
1116               p = GetParent(p);
1117          } while (p.IsOk() && !toFind.IsOk());
1118          return toFind;
1119     }
1120 }
1121
1122 wxTreeItemId wxGenericTreeCtrl::GetFirstVisibleItem() const
1123 {
1124     wxTreeItemId id = GetRootItem();
1125     if (!id.IsOk())
1126         return id;
1127
1128     do
1129     {
1130         if (IsVisible(id))
1131               return id;
1132         id = GetNext(id);
1133     } while (id.IsOk());
1134
1135     return wxTreeItemId();
1136 }
1137
1138 wxTreeItemId wxGenericTreeCtrl::GetNextVisible(const wxTreeItemId& item) const
1139 {
1140     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1141
1142     wxTreeItemId id = item;
1143     if (id.IsOk())
1144     {
1145         while (id = GetNext(id), id.IsOk())
1146         {
1147             if (IsVisible(id))
1148                 return id;
1149         }
1150     }
1151     return wxTreeItemId();
1152 }
1153
1154 wxTreeItemId wxGenericTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
1155 {
1156     wxCHECK_MSG( item.IsOk(), wxTreeItemId(), wxT("invalid tree item") );
1157
1158     wxFAIL_MSG(wxT("not implemented"));
1159
1160     return wxTreeItemId();
1161 }
1162
1163 // -----------------------------------------------------------------------------
1164 // operations
1165 // -----------------------------------------------------------------------------
1166
1167 wxTreeItemId wxGenericTreeCtrl::DoInsertItem(const wxTreeItemId& parentId,
1168                                       size_t previous,
1169                                       const wxString& text,
1170                                       int image, int selImage,
1171                                       wxTreeItemData *data)
1172 {
1173     wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
1174     if ( !parent )
1175     {
1176         // should we give a warning here?
1177         return AddRoot(text, image, selImage, data);
1178     }
1179
1180     m_dirty = TRUE;     // do this first so stuff below doesn't cause flicker
1181
1182     wxGenericTreeItem *item =
1183         new wxGenericTreeItem( parent, text, image, selImage, data );
1184
1185     if ( data != NULL )
1186     {
1187         data->m_pItem = (long) item;
1188     }
1189
1190     parent->Insert( item, previous );
1191
1192     return item;
1193 }
1194
1195 wxTreeItemId wxGenericTreeCtrl::AddRoot(const wxString& text,
1196                                  int image, int selImage,
1197                                  wxTreeItemData *data)
1198 {
1199     wxCHECK_MSG( !m_anchor, wxTreeItemId(), wxT("tree can have only one root") );
1200
1201     m_dirty = TRUE;     // do this first so stuff below doesn't cause flicker
1202
1203     m_anchor = new wxGenericTreeItem((wxGenericTreeItem *)NULL, text,
1204                                    image, selImage, data);
1205     if ( data != NULL )
1206     {
1207         data->m_pItem = (long) m_anchor;
1208     }
1209
1210     if (HasFlag(wxTR_HIDE_ROOT))
1211     {
1212         // if root is hidden, make sure we can navigate
1213         // into children
1214         m_anchor->SetHasPlus();
1215         Expand(m_anchor);
1216     }
1217
1218     if (!HasFlag(wxTR_MULTIPLE))
1219     {
1220         m_current = m_key_current = m_anchor;
1221         m_current->SetHilight( TRUE );
1222     }
1223
1224     return m_anchor;
1225 }
1226
1227 wxTreeItemId wxGenericTreeCtrl::PrependItem(const wxTreeItemId& parent,
1228                                      const wxString& text,
1229                                      int image, int selImage,
1230                                      wxTreeItemData *data)
1231 {
1232     return DoInsertItem(parent, 0u, text, image, selImage, data);
1233 }
1234
1235 wxTreeItemId wxGenericTreeCtrl::InsertItem(const wxTreeItemId& parentId,
1236                                     const wxTreeItemId& idPrevious,
1237                                     const wxString& text,
1238                                     int image, int selImage,
1239                                     wxTreeItemData *data)
1240 {
1241     wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
1242     if ( !parent )
1243     {
1244         // should we give a warning here?
1245         return AddRoot(text, image, selImage, data);
1246     }
1247
1248     int index = parent->GetChildren().Index((wxGenericTreeItem*) idPrevious.m_pItem);
1249     wxASSERT_MSG( index != wxNOT_FOUND,
1250                   wxT("previous item in wxGenericTreeCtrl::InsertItem() is not a sibling") );
1251
1252     return DoInsertItem(parentId, (size_t)++index, text, image, selImage, data);
1253 }
1254
1255 wxTreeItemId wxGenericTreeCtrl::InsertItem(const wxTreeItemId& parentId,
1256                                     size_t before,
1257                                     const wxString& text,
1258                                     int image, int selImage,
1259                                     wxTreeItemData *data)
1260 {
1261     wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
1262     if ( !parent )
1263     {
1264         // should we give a warning here?
1265         return AddRoot(text, image, selImage, data);
1266     }
1267
1268     return DoInsertItem(parentId, before, text, image, selImage, data);
1269 }
1270
1271 wxTreeItemId wxGenericTreeCtrl::AppendItem(const wxTreeItemId& parentId,
1272                                     const wxString& text,
1273                                     int image, int selImage,
1274                                     wxTreeItemData *data)
1275 {
1276     wxGenericTreeItem *parent = (wxGenericTreeItem*) parentId.m_pItem;
1277     if ( !parent )
1278     {
1279         // should we give a warning here?
1280         return AddRoot(text, image, selImage, data);
1281     }
1282
1283     return DoInsertItem( parent, parent->GetChildren().Count(), text,
1284                          image, selImage, data);
1285 }
1286
1287 void wxGenericTreeCtrl::SendDeleteEvent(wxGenericTreeItem *item)
1288 {
1289     wxTreeEvent event( wxEVT_COMMAND_TREE_DELETE_ITEM, GetId() );
1290     event.m_item = (long) item;
1291     event.SetEventObject( this );
1292     ProcessEvent( event );
1293 }
1294
1295 void wxGenericTreeCtrl::DeleteChildren(const wxTreeItemId& itemId)
1296 {
1297     m_dirty = TRUE;     // do this first so stuff below doesn't cause flicker
1298
1299     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1300     item->DeleteChildren(this);
1301 }
1302
1303 void wxGenericTreeCtrl::Delete(const wxTreeItemId& itemId)
1304 {
1305     m_dirty = TRUE;     // do this first so stuff below doesn't cause flicker
1306
1307     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1308
1309     // don't stay with invalid m_key_current or we will crash in
1310     // the next call to OnChar()
1311     bool changeKeyCurrent = FALSE;
1312     wxGenericTreeItem *itemKey = m_key_current;
1313     while ( itemKey )
1314     {
1315         if ( itemKey == item )
1316         {
1317             // m_key_current is a descendant of the item being deleted
1318             changeKeyCurrent = TRUE;
1319             break;
1320         }
1321         itemKey = itemKey->GetParent();
1322     }
1323
1324     wxGenericTreeItem *parent = item->GetParent();
1325     if ( parent )
1326     {
1327         parent->GetChildren().Remove( item );  // remove by value
1328     }
1329
1330     if ( changeKeyCurrent )
1331     {
1332         // may be NULL or not
1333         m_key_current = parent;
1334     }
1335
1336     item->DeleteChildren(this);
1337     SendDeleteEvent(item);
1338     delete item;
1339 }
1340
1341 void wxGenericTreeCtrl::DeleteAllItems()
1342 {
1343     if ( m_anchor )
1344     {
1345         m_dirty = TRUE;
1346
1347         m_anchor->DeleteChildren(this);
1348         delete m_anchor;
1349
1350         m_anchor = NULL;
1351     }
1352 }
1353
1354 void wxGenericTreeCtrl::Expand(const wxTreeItemId& itemId)
1355 {
1356     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1357
1358     wxCHECK_RET( item, _T("invalid item in wxGenericTreeCtrl::Expand") );
1359
1360     if ( !item->HasPlus() )
1361         return;
1362
1363     if ( item->IsExpanded() )
1364         return;
1365
1366     wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_EXPANDING, GetId() );
1367     event.m_item = (long) item;
1368     event.SetEventObject( this );
1369
1370     if ( ProcessEvent( event ) && !event.IsAllowed() )
1371     {
1372         // cancelled by program
1373         return;
1374     }
1375
1376     item->Expand();
1377     CalculatePositions();
1378
1379     RefreshSubtree(item);
1380
1381     event.SetEventType(wxEVT_COMMAND_TREE_ITEM_EXPANDED);
1382     ProcessEvent( event );
1383 }
1384
1385 void wxGenericTreeCtrl::ExpandAll(const wxTreeItemId& item)
1386 {
1387     Expand(item);
1388     if ( IsExpanded(item) )
1389     {
1390         long cookie;
1391         wxTreeItemId child = GetFirstChild(item, cookie);
1392         while ( child.IsOk() )
1393         {
1394             ExpandAll(child);
1395
1396             child = GetNextChild(item, cookie);
1397         }
1398     }
1399 }
1400
1401 void wxGenericTreeCtrl::Collapse(const wxTreeItemId& itemId)
1402 {
1403     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1404
1405     if ( !item->IsExpanded() )
1406         return;
1407
1408     wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_COLLAPSING, GetId() );
1409     event.m_item = (long) item;
1410     event.SetEventObject( this );
1411     if ( ProcessEvent( event ) && !event.IsAllowed() )
1412     {
1413         // cancelled by program
1414         return;
1415     }
1416
1417     item->Collapse();
1418
1419 #if 0  // TODO why should items be collapsed recursively?
1420     wxArrayGenericTreeItems& children = item->GetChildren();
1421     size_t count = children.Count();
1422     for ( size_t n = 0; n < count; n++ )
1423     {
1424         Collapse(children[n]);
1425     }
1426 #endif
1427
1428     CalculatePositions();
1429
1430     RefreshSubtree(item);
1431
1432     event.SetEventType(wxEVT_COMMAND_TREE_ITEM_COLLAPSED);
1433     ProcessEvent( event );
1434 }
1435
1436 void wxGenericTreeCtrl::CollapseAndReset(const wxTreeItemId& item)
1437 {
1438     Collapse(item);
1439     DeleteChildren(item);
1440 }
1441
1442 void wxGenericTreeCtrl::Toggle(const wxTreeItemId& itemId)
1443 {
1444     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1445
1446     if (item->IsExpanded())
1447         Collapse(itemId);
1448     else
1449         Expand(itemId);
1450 }
1451
1452 void wxGenericTreeCtrl::Unselect()
1453 {
1454     if (m_current)
1455     {
1456         m_current->SetHilight( FALSE );
1457         RefreshLine( m_current );
1458     }
1459 }
1460
1461 void wxGenericTreeCtrl::UnselectAllChildren(wxGenericTreeItem *item)
1462 {
1463     if (item->IsSelected())
1464     {
1465         item->SetHilight(FALSE);
1466         RefreshLine(item);
1467     }
1468
1469     if (item->HasChildren())
1470     {
1471         wxArrayGenericTreeItems& children = item->GetChildren();
1472         size_t count = children.Count();
1473         for ( size_t n = 0; n < count; ++n )
1474         {
1475             UnselectAllChildren(children[n]);
1476         }
1477     }
1478 }
1479
1480 void wxGenericTreeCtrl::UnselectAll()
1481 {
1482     wxTreeItemId rootItem = GetRootItem();
1483
1484     // the tree might not have the root item at all
1485     if ( rootItem )
1486     {
1487         UnselectAllChildren((wxGenericTreeItem*) rootItem.m_pItem);
1488     }
1489 }
1490
1491 // Recursive function !
1492 // To stop we must have crt_item<last_item
1493 // Algorithm :
1494 // Tag all next children, when no more children,
1495 // Move to parent (not to tag)
1496 // Keep going... if we found last_item, we stop.
1497 bool wxGenericTreeCtrl::TagNextChildren(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select)
1498 {
1499     wxGenericTreeItem *parent = crt_item->GetParent();
1500
1501     if (parent == NULL) // This is root item
1502         return TagAllChildrenUntilLast(crt_item, last_item, select);
1503
1504     wxArrayGenericTreeItems& children = parent->GetChildren();
1505     int index = children.Index(crt_item);
1506     wxASSERT( index != wxNOT_FOUND ); // I'm not a child of my parent?
1507
1508     size_t count = children.Count();
1509     for (size_t n=(size_t)(index+1); n<count; ++n)
1510     {
1511         if (TagAllChildrenUntilLast(children[n], last_item, select)) return TRUE;
1512     }
1513
1514     return TagNextChildren(parent, last_item, select);
1515 }
1516
1517 bool wxGenericTreeCtrl::TagAllChildrenUntilLast(wxGenericTreeItem *crt_item, wxGenericTreeItem *last_item, bool select)
1518 {
1519     crt_item->SetHilight(select);
1520     RefreshLine(crt_item);
1521
1522     if (crt_item==last_item)
1523         return TRUE;
1524
1525     if (crt_item->HasChildren())
1526     {
1527         wxArrayGenericTreeItems& children = crt_item->GetChildren();
1528         size_t count = children.Count();
1529         for ( size_t n = 0; n < count; ++n )
1530         {
1531             if (TagAllChildrenUntilLast(children[n], last_item, select))
1532                 return TRUE;
1533         }
1534     }
1535
1536   return FALSE;
1537 }
1538
1539 void wxGenericTreeCtrl::SelectItemRange(wxGenericTreeItem *item1, wxGenericTreeItem *item2)
1540 {
1541     // item2 is not necessary after item1
1542     wxGenericTreeItem *first=NULL, *last=NULL;
1543
1544     // choice first' and 'last' between item1 and item2
1545     if (item1->GetY()<item2->GetY())
1546     {
1547         first=item1;
1548         last=item2;
1549     }
1550     else
1551     {
1552         first=item2;
1553         last=item1;
1554     }
1555
1556     bool select = m_current->IsSelected();
1557
1558     if ( TagAllChildrenUntilLast(first,last,select) )
1559         return;
1560
1561     TagNextChildren(first,last,select);
1562 }
1563
1564 void wxGenericTreeCtrl::SelectItem(const wxTreeItemId& itemId,
1565                             bool unselect_others,
1566                             bool extended_select)
1567 {
1568     wxCHECK_RET( itemId.IsOk(), wxT("invalid tree item") );
1569
1570     bool is_single=!(GetWindowStyleFlag() & wxTR_MULTIPLE);
1571     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1572
1573     //wxCHECK_RET( ( (!unselect_others) && is_single),
1574     //           wxT("this is a single selection tree") );
1575
1576     // to keep going anyhow !!!
1577     if (is_single)
1578     {
1579         if (item->IsSelected())
1580             return; // nothing to do
1581         unselect_others = TRUE;
1582         extended_select = FALSE;
1583     }
1584     else if ( unselect_others && item->IsSelected() )
1585     {
1586         // selection change if there is more than one item currently selected
1587         wxArrayTreeItemIds selected_items;
1588         if ( GetSelections(selected_items) == 1 )
1589             return;
1590     }
1591
1592     wxTreeEvent event( wxEVT_COMMAND_TREE_SEL_CHANGING, GetId() );
1593     event.m_item = (long) item;
1594     event.m_itemOld = (long) m_current;
1595     event.SetEventObject( this );
1596     // TODO : Here we don't send any selection mode yet !
1597
1598     if ( GetEventHandler()->ProcessEvent( event ) && !event.IsAllowed() )
1599         return;
1600
1601     wxTreeItemId parent = GetParent( itemId );
1602     while (parent.IsOk())
1603     {
1604         if (!IsExpanded(parent))
1605             Expand( parent );
1606
1607         parent = GetParent( parent );
1608     }
1609
1610     EnsureVisible( itemId );
1611
1612     // ctrl press
1613     if (unselect_others)
1614     {
1615         if (is_single) Unselect(); // to speed up thing
1616         else UnselectAll();
1617     }
1618
1619     // shift press
1620     if (extended_select)
1621     {
1622         if ( !m_current )
1623         {
1624             m_current = m_key_current = (wxGenericTreeItem*) GetRootItem().m_pItem;
1625         }
1626
1627         // don't change the mark (m_current)
1628         SelectItemRange(m_current, item);
1629     }
1630     else
1631     {
1632         bool select=TRUE; // the default
1633
1634         // Check if we need to toggle hilight (ctrl mode)
1635         if (!unselect_others)
1636             select=!item->IsSelected();
1637
1638         m_current = m_key_current = item;
1639         m_current->SetHilight(select);
1640         RefreshLine( m_current );
1641     }
1642
1643     event.SetEventType(wxEVT_COMMAND_TREE_SEL_CHANGED);
1644     GetEventHandler()->ProcessEvent( event );
1645 }
1646
1647 void wxGenericTreeCtrl::FillArray(wxGenericTreeItem *item,
1648                            wxArrayTreeItemIds &array) const
1649 {
1650     if ( item->IsSelected() )
1651         array.Add(wxTreeItemId(item));
1652
1653     if ( item->HasChildren() )
1654     {
1655         wxArrayGenericTreeItems& children = item->GetChildren();
1656         size_t count = children.GetCount();
1657         for ( size_t n = 0; n < count; ++n )
1658             FillArray(children[n], array);
1659     }
1660 }
1661
1662 size_t wxGenericTreeCtrl::GetSelections(wxArrayTreeItemIds &array) const
1663 {
1664     array.Empty();
1665     wxTreeItemId idRoot = GetRootItem();
1666     if ( idRoot.IsOk() )
1667     {
1668         FillArray((wxGenericTreeItem*) idRoot.m_pItem, array);
1669     }
1670     //else: the tree is empty, so no selections
1671
1672     return array.Count();
1673 }
1674
1675 void wxGenericTreeCtrl::EnsureVisible(const wxTreeItemId& item)
1676 {
1677     if (!item.IsOk()) return;
1678
1679     wxGenericTreeItem *gitem = (wxGenericTreeItem*) item.m_pItem;
1680
1681     // first expand all parent branches
1682     wxGenericTreeItem *parent = gitem->GetParent();
1683     while ( parent )
1684     {
1685         Expand(parent);
1686         parent = parent->GetParent();
1687     }
1688
1689     //if (parent) CalculatePositions();
1690
1691     ScrollTo(item);
1692 }
1693
1694 void wxGenericTreeCtrl::ScrollTo(const wxTreeItemId &item)
1695 {
1696     if (!item.IsOk()) return;
1697
1698     // We have to call this here because the label in
1699     // question might just have been added and no screen
1700     // update taken place.
1701     if (m_dirty) wxYieldIfNeeded();
1702
1703     wxGenericTreeItem *gitem = (wxGenericTreeItem*) item.m_pItem;
1704
1705     // now scroll to the item
1706     int item_y = gitem->GetY();
1707
1708     int start_x = 0;
1709     int start_y = 0;
1710     GetViewStart( &start_x, &start_y );
1711     start_y *= PIXELS_PER_UNIT;
1712
1713     int client_h = 0;
1714     int client_w = 0;
1715     GetClientSize( &client_w, &client_h );
1716
1717     if (item_y < start_y+3)
1718     {
1719         // going down
1720         int x = 0;
1721         int y = 0;
1722         m_anchor->GetSize( x, y, this );
1723         y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1724         x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1725         int x_pos = GetScrollPos( wxHORIZONTAL );
1726         // Item should appear at top
1727         SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, item_y/PIXELS_PER_UNIT );
1728     }
1729     else if (item_y+GetLineHeight(gitem) > start_y+client_h)
1730     {
1731         // going up
1732         int x = 0;
1733         int y = 0;
1734         m_anchor->GetSize( x, y, this );
1735         y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1736         x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1737         item_y += PIXELS_PER_UNIT+2;
1738         int x_pos = GetScrollPos( wxHORIZONTAL );
1739         // Item should appear at bottom
1740         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 );
1741     }
1742 }
1743
1744 // FIXME: tree sorting functions are not reentrant and not MT-safe!
1745 static wxGenericTreeCtrl *s_treeBeingSorted = NULL;
1746
1747 static int LINKAGEMODE tree_ctrl_compare_func(wxGenericTreeItem **item1,
1748                                   wxGenericTreeItem **item2)
1749 {
1750     wxCHECK_MSG( s_treeBeingSorted, 0, wxT("bug in wxGenericTreeCtrl::SortChildren()") );
1751
1752     return s_treeBeingSorted->OnCompareItems(*item1, *item2);
1753 }
1754
1755 int wxGenericTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
1756                                const wxTreeItemId& item2)
1757 {
1758     return wxStrcmp(GetItemText(item1), GetItemText(item2));
1759 }
1760
1761 void wxGenericTreeCtrl::SortChildren(const wxTreeItemId& itemId)
1762 {
1763     wxCHECK_RET( itemId.IsOk(), wxT("invalid tree item") );
1764
1765     wxGenericTreeItem *item = (wxGenericTreeItem*) itemId.m_pItem;
1766
1767     wxCHECK_RET( !s_treeBeingSorted,
1768                  wxT("wxGenericTreeCtrl::SortChildren is not reentrant") );
1769
1770     wxArrayGenericTreeItems& children = item->GetChildren();
1771     if ( children.Count() > 1 )
1772     {
1773         m_dirty = TRUE;
1774
1775         s_treeBeingSorted = this;
1776         children.Sort(tree_ctrl_compare_func);
1777         s_treeBeingSorted = NULL;
1778     }
1779     //else: don't make the tree dirty as nothing changed
1780 }
1781
1782 wxImageList *wxGenericTreeCtrl::GetImageList() const
1783 {
1784     return m_imageListNormal;
1785 }
1786
1787 wxImageList *wxGenericTreeCtrl::GetButtonsImageList() const
1788 {
1789     return m_imageListButtons;
1790 }
1791
1792 wxImageList *wxGenericTreeCtrl::GetStateImageList() const
1793 {
1794     return m_imageListState;
1795 }
1796
1797 void wxGenericTreeCtrl::CalculateLineHeight()
1798 {
1799     wxClientDC dc(this);
1800     m_lineHeight = (int)(dc.GetCharHeight() + 4);
1801
1802     if ( m_imageListNormal )
1803     {
1804         // Calculate a m_lineHeight value from the normal Image sizes.
1805         // May be toggle off. Then wxGenericTreeCtrl will spread when
1806         // necessary (which might look ugly).
1807         int n = m_imageListNormal->GetImageCount();
1808         for (int i = 0; i < n ; i++)
1809         {
1810             int width = 0, height = 0;
1811             m_imageListNormal->GetSize(i, width, height);
1812             if (height > m_lineHeight) m_lineHeight = height;
1813         }
1814     }
1815
1816     if (m_imageListButtons)
1817     {
1818         // Calculate a m_lineHeight value from the Button image sizes.
1819         // May be toggle off. Then wxGenericTreeCtrl will spread when
1820         // necessary (which might look ugly).
1821         int n = m_imageListButtons->GetImageCount();
1822         for (int i = 0; i < n ; i++)
1823         {
1824             int width = 0, height = 0;
1825             m_imageListButtons->GetSize(i, width, height);
1826             if (height > m_lineHeight) m_lineHeight = height;
1827         }
1828     }
1829
1830     if (m_lineHeight < 30)
1831         m_lineHeight += 2;                 // at least 2 pixels
1832     else
1833         m_lineHeight += m_lineHeight/10;   // otherwise 10% extra spacing
1834 }
1835
1836 void wxGenericTreeCtrl::SetImageList(wxImageList *imageList)
1837 {
1838     if (m_ownsImageListNormal) delete m_imageListNormal;
1839     m_imageListNormal = imageList;
1840     m_ownsImageListNormal = FALSE;
1841     m_dirty = TRUE;
1842     CalculateLineHeight();
1843 }
1844
1845 void wxGenericTreeCtrl::SetStateImageList(wxImageList *imageList)
1846 {
1847     if (m_ownsImageListState) delete m_imageListState;
1848     m_imageListState = imageList;
1849     m_ownsImageListState = FALSE;
1850 }
1851
1852 void wxGenericTreeCtrl::SetButtonsImageList(wxImageList *imageList)
1853 {
1854     if (m_ownsImageListButtons) delete m_imageListButtons;
1855     m_imageListButtons = imageList;
1856     m_ownsImageListButtons = FALSE;
1857     m_dirty = TRUE;
1858     CalculateLineHeight();
1859 }
1860
1861 void wxGenericTreeCtrl::AssignImageList(wxImageList *imageList)
1862 {
1863     SetImageList(imageList);
1864     m_ownsImageListNormal = TRUE;
1865 }
1866
1867 void wxGenericTreeCtrl::AssignStateImageList(wxImageList *imageList)
1868 {
1869     SetStateImageList(imageList);
1870     m_ownsImageListState = TRUE;
1871 }
1872
1873 void wxGenericTreeCtrl::AssignButtonsImageList(wxImageList *imageList)
1874 {
1875     SetButtonsImageList(imageList);
1876     m_ownsImageListButtons = TRUE;
1877 }
1878
1879 // -----------------------------------------------------------------------------
1880 // helpers
1881 // -----------------------------------------------------------------------------
1882
1883 void wxGenericTreeCtrl::AdjustMyScrollbars()
1884 {
1885     if (m_anchor)
1886     {
1887         int x = 0, y = 0;
1888         m_anchor->GetSize( x, y, this );
1889         y += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1890         x += PIXELS_PER_UNIT+2; // one more scrollbar unit + 2 pixels
1891         int x_pos = GetScrollPos( wxHORIZONTAL );
1892         int y_pos = GetScrollPos( wxVERTICAL );
1893         SetScrollbars( PIXELS_PER_UNIT, PIXELS_PER_UNIT, x/PIXELS_PER_UNIT, y/PIXELS_PER_UNIT, x_pos, y_pos );
1894     }
1895     else
1896     {
1897         SetScrollbars( 0, 0, 0, 0 );
1898     }
1899 }
1900
1901 int wxGenericTreeCtrl::GetLineHeight(wxGenericTreeItem *item) const
1902 {
1903     if (GetWindowStyleFlag() & wxTR_HAS_VARIABLE_ROW_HEIGHT)
1904         return item->GetHeight();
1905     else
1906         return m_lineHeight;
1907 }
1908
1909 void wxGenericTreeCtrl::PaintItem(wxGenericTreeItem *item, wxDC& dc)
1910 {
1911     // TODO implement "state" icon on items
1912
1913     wxTreeItemAttr *attr = item->GetAttributes();
1914     if ( attr && attr->HasFont() )
1915         dc.SetFont(attr->GetFont());
1916     else if (item->IsBold())
1917         dc.SetFont(m_boldFont);
1918
1919     long text_w = 0, text_h = 0;
1920     dc.GetTextExtent( item->GetText(), &text_w, &text_h );
1921
1922     int image_h = 0, image_w = 0;
1923     int image = item->GetCurrentImage();
1924     if ( image != NO_IMAGE )
1925     {
1926         if ( m_imageListNormal )
1927         {
1928             m_imageListNormal->GetSize( image, image_w, image_h );
1929             image_w += 4;
1930         }
1931         else
1932         {
1933             image = NO_IMAGE;
1934         }
1935     }
1936
1937     int total_h = GetLineHeight(item);
1938
1939     if ( item->IsSelected() )
1940     {
1941         dc.SetBrush(*(m_hasFocus ? m_hilightBrush : m_hilightUnfocusedBrush));
1942     }
1943     else
1944     {
1945         wxColour colBg;
1946         if ( attr && attr->HasBackgroundColour() )
1947             colBg = attr->GetBackgroundColour();
1948         else
1949             colBg = m_backgroundColour;
1950         dc.SetBrush(wxBrush(colBg, wxSOLID));
1951     }
1952
1953     int offset = HasFlag(wxTR_ROW_LINES) ? 1 : 0;
1954
1955     if ( HasFlag(wxTR_FULL_ROW_HIGHLIGHT) )
1956     {
1957         int x, y, w, h;
1958
1959         DoGetPosition(&x, &y);
1960         DoGetSize(&w, &h);
1961         dc.DrawRectangle(x, item->GetY()+offset, w, total_h-offset);
1962     }
1963     else
1964     {
1965         if ( item->IsSelected() && image != NO_IMAGE )
1966         {
1967             // If it's selected, and there's an image, then we should
1968             // take care to leave the area under the image painted in the
1969             // background colour.
1970             dc.DrawRectangle( item->GetX() + image_w - 2, item->GetY()+offset,
1971                               item->GetWidth() - image_w + 2, total_h-offset );
1972         }
1973         else
1974         {
1975             dc.DrawRectangle( item->GetX()-2, item->GetY()+offset,
1976                               item->GetWidth()+2, total_h-offset );
1977         }
1978     }
1979
1980     if ( image != NO_IMAGE )
1981     {
1982         dc.SetClippingRegion( item->GetX(), item->GetY(), image_w-2, total_h );
1983         m_imageListNormal->Draw( image, dc,
1984                                  item->GetX(),
1985                                  item->GetY() +((total_h > image_h)?((total_h-image_h)/2):0),
1986                                  wxIMAGELIST_DRAW_TRANSPARENT );
1987         dc.DestroyClippingRegion();
1988     }
1989
1990     dc.SetBackgroundMode(wxTRANSPARENT);
1991     int extraH = (total_h > text_h) ? (total_h - text_h)/2 : 0;
1992     dc.DrawText( item->GetText(),
1993                  (wxCoord)(image_w + item->GetX()),
1994                  (wxCoord)(item->GetY() + extraH));
1995
1996     // restore normal font
1997     dc.SetFont( m_normalFont );
1998 }
1999
2000 // Now y stands for the top of the item, whereas it used to stand for middle !
2001 void wxGenericTreeCtrl::PaintLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y )
2002 {
2003     int x = level*m_indent;
2004     if (!HasFlag(wxTR_HIDE_ROOT))
2005     {
2006         x += m_indent;
2007     }
2008     else if (level == 0)
2009     {
2010         // always expand hidden root
2011         int origY = y;
2012         wxArrayGenericTreeItems& children = item->GetChildren();
2013         int count = children.Count();
2014         if (count > 0)
2015         {
2016             int n = 0, oldY;
2017             do {
2018                 oldY = y;
2019                 PaintLevel(children[n], dc, 1, y);
2020             } while (++n < count);
2021
2022             if (!HasFlag(wxTR_NO_LINES) && HasFlag(wxTR_LINES_AT_ROOT) && count > 0)
2023             {
2024                 // draw line down to last child
2025                 origY += GetLineHeight(children[0])>>1;
2026                 oldY += GetLineHeight(children[n-1])>>1;
2027                 dc.DrawLine(3, origY, 3, oldY);
2028             }
2029         }
2030         return;
2031     }
2032
2033     item->SetX(x+m_spacing);
2034     item->SetY(y);
2035
2036     int h = GetLineHeight(item);
2037     int y_top = y;
2038     int y_mid = y_top + (h>>1);
2039     y += h;
2040
2041     int exposed_x = dc.LogicalToDeviceX(0);
2042     int exposed_y = dc.LogicalToDeviceY(y_top);
2043
2044     if (IsExposed(exposed_x, exposed_y, 10000, h))  // 10000 = very much
2045     {
2046         wxPen *pen =
2047 #ifndef __WXMAC__
2048             // don't draw rect outline if we already have the
2049             // background color under Mac
2050             (item->IsSelected() && m_hasFocus) ? wxBLACK_PEN :
2051 #endif // !__WXMAC__
2052             wxTRANSPARENT_PEN;
2053
2054         wxColour colText;
2055         if ( item->IsSelected() )
2056         {
2057             colText = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
2058         }
2059         else
2060         {
2061             wxTreeItemAttr *attr = item->GetAttributes();
2062             if (attr && attr->HasTextColour())
2063                 colText = attr->GetTextColour();
2064             else
2065                 colText = GetForegroundColour();
2066         }
2067
2068         // prepare to draw
2069         dc.SetTextForeground(colText);
2070         dc.SetPen(*pen);
2071
2072         // draw
2073         PaintItem(item, dc);
2074
2075         if (HasFlag(wxTR_ROW_LINES))
2076         {
2077             // if the background colour is white, choose a
2078             // contrasting color for the lines
2079             dc.SetPen(*((GetBackgroundColour() == *wxWHITE)
2080                          ? wxMEDIUM_GREY_PEN : wxWHITE_PEN));
2081             dc.DrawLine(0, y_top, 10000, y_top);
2082             dc.DrawLine(0, y, 10000, y);
2083         }
2084
2085         // restore DC objects
2086         dc.SetBrush(*wxWHITE_BRUSH);
2087         dc.SetPen(m_dottedPen);
2088         dc.SetTextForeground(*wxBLACK);
2089
2090         if (item->HasPlus() && HasButtons())  // should the item show a button?
2091         {
2092             if (!HasFlag(wxTR_NO_LINES))
2093             {
2094                 if (x > (signed)m_indent)
2095                     dc.DrawLine(x - m_indent, y_mid, x - 5, y_mid);
2096                 else if (HasFlag(wxTR_LINES_AT_ROOT))
2097                     dc.DrawLine(3, y_mid, x - 5, y_mid);
2098                 dc.DrawLine(x + 5, y_mid, x + m_spacing, y_mid);
2099             }
2100
2101             if (m_imageListButtons != NULL)
2102             {
2103                 // draw the image button here
2104                 int image_h = 0, image_w = 0, image = wxTreeItemIcon_Normal;
2105                 if (item->IsExpanded()) image = wxTreeItemIcon_Expanded;
2106                 if (item->IsSelected())
2107                     image += wxTreeItemIcon_Selected - wxTreeItemIcon_Normal;
2108                 m_imageListButtons->GetSize(image, image_w, image_h);
2109                 int xx = x - (image_w>>1);
2110                 int yy = y_mid - (image_h>>1);
2111                 dc.SetClippingRegion(xx, yy, image_w, image_h);
2112                 m_imageListButtons->Draw(image, dc, xx, yy,
2113                                          wxIMAGELIST_DRAW_TRANSPARENT);
2114                 dc.DestroyClippingRegion();
2115             }
2116             else if (HasFlag(wxTR_TWIST_BUTTONS))
2117             {
2118                 // draw the twisty button here
2119
2120                 if (HasFlag(wxTR_AQUA_BUTTONS))
2121                 {
2122                     if (item->IsExpanded())
2123                         dc.DrawBitmap( *m_arrowDown, x-5, y_mid-6, TRUE );
2124                     else
2125                         dc.DrawBitmap( *m_arrowRight, x-5, y_mid-6, TRUE );
2126                 }
2127                 else
2128                 {
2129                     dc.SetBrush(*m_hilightBrush);
2130                     dc.SetPen(*wxBLACK_PEN);
2131                     wxPoint button[3];
2132
2133                     if (item->IsExpanded())
2134                     {
2135                         button[0].x = x-5;
2136                         button[0].y = y_mid-2;
2137                         button[1].x = x+5;
2138                         button[1].y = y_mid-2;
2139                         button[2].x = x;
2140                         button[2].y = y_mid+3;
2141                     }
2142                     else
2143                     {
2144                         button[0].y = y_mid-5;
2145                         button[0].x = x-2;
2146                         button[1].y = y_mid+5;
2147                         button[1].x = x-2;
2148                         button[2].y = y_mid;
2149                         button[2].x = x+3;
2150                     }
2151                     dc.DrawPolygon(3, button);
2152                     dc.SetPen(m_dottedPen);
2153                 }
2154             }
2155             else // if (HasFlag(wxTR_HAS_BUTTONS))
2156             {
2157                 // draw the plus sign here
2158                 dc.SetPen(*wxGREY_PEN);
2159                 dc.SetBrush(*wxWHITE_BRUSH);
2160                 dc.DrawRectangle(x-5, y_mid-4, 11, 9);
2161                 dc.SetPen(*wxBLACK_PEN);
2162                 dc.DrawLine(x-2, y_mid, x+3, y_mid);
2163                 if (!item->IsExpanded())
2164                     dc.DrawLine(x, y_mid-2, x, y_mid+3);
2165                 dc.SetPen(m_dottedPen);
2166             }
2167         }
2168         else if (!HasFlag(wxTR_NO_LINES))  // no button; maybe a line?
2169         {
2170             // draw the horizontal line here
2171             int x_start = x;
2172             if (x > (signed)m_indent)
2173                 x_start -= m_indent;
2174             else if (HasFlag(wxTR_LINES_AT_ROOT))
2175                 x_start = 3;
2176             dc.DrawLine(x_start, y_mid, x + m_spacing, y_mid);
2177         }
2178     }
2179
2180     if (item->IsExpanded())
2181     {
2182         wxArrayGenericTreeItems& children = item->GetChildren();
2183         int count = children.Count();
2184         if (count > 0)
2185         {
2186             int n = 0, oldY;
2187             ++level;
2188             do {
2189                 oldY = y;
2190                 PaintLevel(children[n], dc, level, y);
2191             } while (++n < count);
2192
2193             if (!HasFlag(wxTR_NO_LINES) && count > 0)
2194             {
2195                 // draw line down to last child
2196                 oldY += GetLineHeight(children[n-1])>>1;
2197                 if (HasButtons()) y_mid += 5;
2198                 dc.DrawLine(x, y_mid, x, oldY);
2199             }
2200         }
2201     }
2202 }
2203
2204 void wxGenericTreeCtrl::DrawDropEffect(wxGenericTreeItem *item)
2205 {
2206     if ( item )
2207     {
2208         if ( item->HasPlus() )
2209         {
2210             // it's a folder, indicate it by a border
2211             DrawBorder(item);
2212         }
2213         else
2214         {
2215             // draw a line under the drop target because the item will be
2216             // dropped there
2217             DrawLine(item, TRUE /* below */);
2218         }
2219
2220         SetCursor(wxCURSOR_BULLSEYE);
2221     }
2222     else
2223     {
2224         // can't drop here
2225         SetCursor(wxCURSOR_NO_ENTRY);
2226     }
2227 }
2228
2229 void wxGenericTreeCtrl::DrawBorder(const wxTreeItemId &item)
2230 {
2231     wxCHECK_RET( item.IsOk(), _T("invalid item in wxGenericTreeCtrl::DrawLine") );
2232
2233     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
2234
2235     wxClientDC dc(this);
2236     PrepareDC( dc );
2237     dc.SetLogicalFunction(wxINVERT);
2238     dc.SetBrush(*wxTRANSPARENT_BRUSH);
2239
2240     int w = i->GetWidth() + 2;
2241     int h = GetLineHeight(i) + 2;
2242
2243     dc.DrawRectangle( i->GetX() - 1, i->GetY() - 1, w, h);
2244 }
2245
2246 void wxGenericTreeCtrl::DrawLine(const wxTreeItemId &item, bool below)
2247 {
2248     wxCHECK_RET( item.IsOk(), _T("invalid item in wxGenericTreeCtrl::DrawLine") );
2249
2250     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
2251
2252     wxClientDC dc(this);
2253     PrepareDC( dc );
2254     dc.SetLogicalFunction(wxINVERT);
2255
2256     int x = i->GetX(),
2257         y = i->GetY();
2258     if ( below )
2259     {
2260         y += GetLineHeight(i) - 1;
2261     }
2262
2263     dc.DrawLine( x, y, x + i->GetWidth(), y);
2264 }
2265
2266 // -----------------------------------------------------------------------------
2267 // wxWindows callbacks
2268 // -----------------------------------------------------------------------------
2269
2270 void wxGenericTreeCtrl::OnPaint( wxPaintEvent &WXUNUSED(event) )
2271 {
2272     wxPaintDC dc(this);
2273     PrepareDC( dc );
2274
2275     if ( !m_anchor)
2276         return;
2277
2278     dc.SetFont( m_normalFont );
2279     dc.SetPen( m_dottedPen );
2280
2281     // this is now done dynamically
2282     //if(GetImageList() == NULL)
2283     // m_lineHeight = (int)(dc.GetCharHeight() + 4);
2284
2285     int y = 2;
2286     PaintLevel( m_anchor, dc, 0, y );
2287 }
2288
2289 void wxGenericTreeCtrl::OnSetFocus( wxFocusEvent &event )
2290 {
2291     m_hasFocus = TRUE;
2292
2293     RefreshSelected();
2294
2295     event.Skip();
2296 }
2297
2298 void wxGenericTreeCtrl::OnKillFocus( wxFocusEvent &event )
2299 {
2300     m_hasFocus = FALSE;
2301
2302     RefreshSelected();
2303
2304     event.Skip();
2305 }
2306
2307 void wxGenericTreeCtrl::OnChar( wxKeyEvent &event )
2308 {
2309     wxTreeEvent te( wxEVT_COMMAND_TREE_KEY_DOWN, GetId() );
2310     te.m_evtKey = event;
2311     te.SetEventObject( this );
2312     if ( GetEventHandler()->ProcessEvent( te ) )
2313     {
2314         // intercepted by the user code
2315         return;
2316     }
2317
2318     if ( (m_current == 0) || (m_key_current == 0) )
2319     {
2320         event.Skip();
2321         return;
2322     }
2323
2324     // how should the selection work for this event?
2325     bool is_multiple, extended_select, unselect_others;
2326     EventFlagsToSelType(GetWindowStyleFlag(),
2327                         event.ShiftDown(),
2328                         event.ControlDown(),
2329                         is_multiple, extended_select, unselect_others);
2330
2331     // + : Expand
2332     // - : Collaspe
2333     // * : Expand all/Collapse all
2334     // ' ' | return : activate
2335     // up    : go up (not last children!)
2336     // down  : go down
2337     // left  : go to parent
2338     // right : open if parent and go next
2339     // home  : go to root
2340     // end   : go to last item without opening parents
2341     switch (event.KeyCode())
2342     {
2343         case '+':
2344         case WXK_ADD:
2345             if (m_current->HasPlus() && !IsExpanded(m_current))
2346             {
2347                 Expand(m_current);
2348             }
2349             break;
2350
2351         case '*':
2352         case WXK_MULTIPLY:
2353             if ( !IsExpanded(m_current) )
2354             {
2355                 // expand all
2356                 ExpandAll(m_current);
2357                 break;
2358             }
2359             //else: fall through to Collapse() it
2360
2361         case '-':
2362         case WXK_SUBTRACT:
2363             if (IsExpanded(m_current))
2364             {
2365                 Collapse(m_current);
2366             }
2367             break;
2368
2369         case ' ':
2370         case WXK_RETURN:
2371             {
2372                 wxTreeEvent event( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
2373                 event.m_item = (long) m_current;
2374                 event.SetEventObject( this );
2375                 GetEventHandler()->ProcessEvent( event );
2376             }
2377             break;
2378
2379             // up goes to the previous sibling or to the last
2380             // of its children if it's expanded
2381         case WXK_UP:
2382             {
2383                 wxTreeItemId prev = GetPrevSibling( m_key_current );
2384                 if (!prev)
2385                 {
2386                     prev = GetParent( m_key_current );
2387                     if ((prev == GetRootItem()) && HasFlag(wxTR_HIDE_ROOT))
2388                     {
2389                         break;  // don't go to root if it is hidden
2390                     }
2391                     if (prev)
2392                     {
2393                         long cookie = 0;
2394                         wxTreeItemId current = m_key_current;
2395                         // TODO: Huh?  If we get here, we'd better be the first child of our parent.  How else could it be?
2396                         if (current == GetFirstChild( prev, cookie ))
2397                         {
2398                             // otherwise we return to where we came from
2399                             SelectItem( prev, unselect_others, extended_select );
2400                             m_key_current= (wxGenericTreeItem*) prev.m_pItem;
2401                             EnsureVisible( prev );
2402                             break;
2403                         }
2404                     }
2405                 }
2406                 if (prev)
2407                 {
2408                     while ( IsExpanded(prev) && HasChildren(prev) )
2409                     {
2410                         wxTreeItemId child = GetLastChild(prev);
2411                         if ( child )
2412                         {
2413                             prev = child;
2414                         }
2415                     }
2416
2417                     SelectItem( prev, unselect_others, extended_select );
2418                     m_key_current=(wxGenericTreeItem*) prev.m_pItem;
2419                     EnsureVisible( prev );
2420                 }
2421             }
2422             break;
2423
2424             // left arrow goes to the parent
2425         case WXK_LEFT:
2426             {
2427                 wxTreeItemId prev = GetParent( m_current );
2428                 if ((prev == GetRootItem()) && HasFlag(wxTR_HIDE_ROOT))
2429                 {
2430                     // don't go to root if it is hidden
2431                     prev = GetPrevSibling( m_current );
2432                 }
2433                 if (prev)
2434                 {
2435                     EnsureVisible( prev );
2436                     SelectItem( prev, unselect_others, extended_select );
2437                 }
2438             }
2439             break;
2440
2441         case WXK_RIGHT:
2442             // this works the same as the down arrow except that we
2443             // also expand the item if it wasn't expanded yet
2444             Expand(m_current);
2445             // fall through
2446
2447         case WXK_DOWN:
2448             {
2449                 if (IsExpanded(m_key_current) && HasChildren(m_key_current))
2450                 {
2451                     long cookie = 0;
2452                     wxTreeItemId child = GetFirstChild( m_key_current, cookie );
2453                     SelectItem( child, unselect_others, extended_select );
2454                     m_key_current=(wxGenericTreeItem*) child.m_pItem;
2455                     EnsureVisible( child );
2456                 }
2457                 else
2458                 {
2459                     wxTreeItemId next = GetNextSibling( m_key_current );
2460                     if (!next)
2461                     {
2462                         wxTreeItemId current = m_key_current;
2463                         while (current && !next)
2464                         {
2465                             current = GetParent( current );
2466                             if (current) next = GetNextSibling( current );
2467                         }
2468                     }
2469                     if (next)
2470                     {
2471                         SelectItem( next, unselect_others, extended_select );
2472                         m_key_current=(wxGenericTreeItem*) next.m_pItem;
2473                         EnsureVisible( next );
2474                     }
2475                 }
2476             }
2477             break;
2478
2479             // <End> selects the last visible tree item
2480         case WXK_END:
2481             {
2482                 wxTreeItemId last = GetRootItem();
2483
2484                 while ( last.IsOk() && IsExpanded(last) )
2485                 {
2486                     wxTreeItemId lastChild = GetLastChild(last);
2487
2488                     // it may happen if the item was expanded but then all of
2489                     // its children have been deleted - so IsExpanded() returned
2490                     // TRUE, but GetLastChild() returned invalid item
2491                     if ( !lastChild )
2492                         break;
2493
2494                     last = lastChild;
2495                 }
2496
2497                 if ( last.IsOk() )
2498                 {
2499                     EnsureVisible( last );
2500                     SelectItem( last, unselect_others, extended_select );
2501                 }
2502             }
2503             break;
2504
2505             // <Home> selects the root item
2506         case WXK_HOME:
2507             {
2508                 wxTreeItemId prev = GetRootItem();
2509                 if (!prev) break;
2510                 if (HasFlag(wxTR_HIDE_ROOT))
2511                 {
2512                     long dummy;
2513                     prev = GetFirstChild(prev, dummy);
2514                     if (!prev) break;
2515                 }
2516                 EnsureVisible( prev );
2517                 SelectItem( prev, unselect_others, extended_select );
2518             }
2519             break;
2520
2521         default:
2522             event.Skip();
2523     }
2524 }
2525
2526 wxTreeItemId wxGenericTreeCtrl::HitTest(const wxPoint& point, int& flags)
2527 {
2528     // JACS: removed wxYieldIfNeeded() because it can cause the window
2529     // to be deleted from under us if a close window event is pending
2530
2531     int w, h;
2532     GetSize(&w, &h);
2533     flags=0;
2534     if (point.x<0) flags |= wxTREE_HITTEST_TOLEFT;
2535     if (point.x>w) flags |= wxTREE_HITTEST_TORIGHT;
2536     if (point.y<0) flags |= wxTREE_HITTEST_ABOVE;
2537     if (point.y>h) flags |= wxTREE_HITTEST_BELOW;
2538     if (flags) return wxTreeItemId();
2539
2540     if (m_anchor == NULL)
2541     {
2542         flags = wxTREE_HITTEST_NOWHERE;
2543         return wxTreeItemId();
2544     }
2545
2546     wxClientDC dc(this);
2547     PrepareDC(dc);
2548     wxCoord x = dc.DeviceToLogicalX( point.x );
2549     wxCoord y = dc.DeviceToLogicalY( point.y );
2550     wxGenericTreeItem *hit =  m_anchor->HitTest(wxPoint(x, y),
2551                                                 this,
2552                                                 flags,
2553                                                 0 );
2554     if (hit == NULL)
2555     {
2556         flags = wxTREE_HITTEST_NOWHERE;
2557         return wxTreeItemId();
2558     }
2559     return hit;
2560 }
2561
2562 // get the bounding rectangle of the item (or of its label only)
2563 bool wxGenericTreeCtrl::GetBoundingRect(const wxTreeItemId& item,
2564                          wxRect& rect,
2565                          bool WXUNUSED(textOnly)) const
2566 {
2567     wxCHECK_MSG( item.IsOk(), FALSE, _T("invalid item in wxGenericTreeCtrl::GetBoundingRect") );
2568
2569     wxGenericTreeItem *i = (wxGenericTreeItem*) item.m_pItem;
2570
2571     int startX, startY;
2572     GetViewStart(& startX, & startY);
2573
2574     rect.x = i->GetX() - startX*PIXELS_PER_UNIT;
2575     rect.y = i->GetY() - startY*PIXELS_PER_UNIT;
2576     rect.width = i->GetWidth();
2577     //rect.height = i->GetHeight();
2578     rect.height = GetLineHeight(i);
2579
2580     return TRUE;
2581 }
2582
2583 /* **** */
2584
2585 void wxGenericTreeCtrl::Edit( const wxTreeItemId& item )
2586 {
2587     if (!item.IsOk()) return;
2588
2589     m_currentEdit = (wxGenericTreeItem*) item.m_pItem;
2590
2591     wxTreeEvent te( wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT, GetId() );
2592     te.m_item = (long) m_currentEdit;
2593     te.SetEventObject( this );
2594     GetEventHandler()->ProcessEvent( te );
2595
2596     if (!te.IsAllowed()) return;
2597
2598     // We have to call this here because the label in
2599     // question might just have been added and no screen
2600     // update taken place.
2601     if (m_dirty) wxYieldIfNeeded();
2602
2603     wxString s = m_currentEdit->GetText();
2604     int x = m_currentEdit->GetX();
2605     int y = m_currentEdit->GetY();
2606     int w = m_currentEdit->GetWidth();
2607     int h = m_currentEdit->GetHeight();
2608
2609     int image_h = 0;
2610     int image_w = 0;
2611
2612     int image = m_currentEdit->GetCurrentImage();
2613     if ( image != NO_IMAGE )
2614     {
2615         if ( m_imageListNormal )
2616         {
2617             m_imageListNormal->GetSize( image, image_w, image_h );
2618             image_w += 4;
2619         }
2620         else
2621         {
2622             wxFAIL_MSG(_T("you must create an image list to use images!"));
2623         }
2624     }
2625     x += image_w;
2626     w -= image_w + 4; // I don't know why +4 is needed
2627
2628     wxClientDC dc(this);
2629     PrepareDC( dc );
2630     x = dc.LogicalToDeviceX( x );
2631     y = dc.LogicalToDeviceY( y );
2632
2633     wxTreeTextCtrl *text = new wxTreeTextCtrl(this, -1,
2634                                               &m_renameAccept,
2635                                               &m_renameRes,
2636                                               this,
2637                                               s,
2638                                               wxPoint(x-4,y-4),
2639                                               wxSize(w+11,h+8));
2640     text->SetFocus();
2641 }
2642
2643 void wxGenericTreeCtrl::OnRenameTimer()
2644 {
2645     Edit( m_current );
2646 }
2647
2648 void wxGenericTreeCtrl::OnRenameAccept()
2649 {
2650     // TODO if the validator fails this causes a crash
2651     wxTreeEvent le( wxEVT_COMMAND_TREE_END_LABEL_EDIT, GetId() );
2652     le.m_item = (long) m_currentEdit;
2653     le.SetEventObject( this );
2654     le.m_label = m_renameRes;
2655     GetEventHandler()->ProcessEvent( le );
2656
2657     if (!le.IsAllowed()) return;
2658
2659     SetItemText( m_currentEdit, m_renameRes );
2660 }
2661
2662 void wxGenericTreeCtrl::OnMouse( wxMouseEvent &event )
2663 {
2664     if ( !m_anchor ) return;
2665
2666     // we process left mouse up event (enables in-place edit), right down
2667     // (pass to the user code), left dbl click (activate item) and
2668     // dragging/moving events for items drag-and-drop
2669     if ( !(event.LeftDown() ||
2670            event.LeftUp() ||
2671            event.RightDown() ||
2672            event.LeftDClick() ||
2673            event.Dragging() ||
2674            ((event.Moving() || event.RightUp()) && m_isDragging)) )
2675     {
2676         event.Skip();
2677
2678         return;
2679     }
2680
2681     wxClientDC dc(this);
2682     PrepareDC(dc);
2683     wxCoord x = dc.DeviceToLogicalX( event.GetX() );
2684     wxCoord y = dc.DeviceToLogicalY( event.GetY() );
2685
2686     int flags = 0;
2687     wxGenericTreeItem *item = m_anchor->HitTest( wxPoint(x,y),
2688                                                  this,
2689                                                  flags,
2690                                                  0 );
2691
2692     if ( event.Dragging() && !m_isDragging )
2693     {
2694         if (m_dragCount == 0)
2695             m_dragStart = wxPoint(x,y);
2696
2697         m_dragCount++;
2698
2699         if (m_dragCount != 3)
2700         {
2701             // wait until user drags a bit further...
2702             return;
2703         }
2704
2705         wxEventType command = event.RightIsDown()
2706                               ? wxEVT_COMMAND_TREE_BEGIN_RDRAG
2707                               : wxEVT_COMMAND_TREE_BEGIN_DRAG;
2708
2709         wxTreeEvent nevent( command, GetId() );
2710         nevent.m_item = (long) m_current;
2711         nevent.SetEventObject(this);
2712
2713         // by default the dragging is not supported, the user code must
2714         // explicitly allow the event for it to take place
2715         nevent.Veto();
2716
2717         if ( GetEventHandler()->ProcessEvent(nevent) && nevent.IsAllowed() )
2718         {
2719             // we're going to drag this item
2720             m_isDragging = TRUE;
2721
2722             // remember the old cursor because we will change it while
2723             // dragging
2724             m_oldCursor = m_cursor;
2725
2726             // in a single selection control, hide the selection temporarily
2727             if ( !(GetWindowStyleFlag() & wxTR_MULTIPLE) )
2728             {
2729                 m_oldSelection = (wxGenericTreeItem*) GetSelection().m_pItem;
2730
2731                 if ( m_oldSelection )
2732                 {
2733                     m_oldSelection->SetHilight(FALSE);
2734                     RefreshLine(m_oldSelection);
2735                 }
2736             }
2737
2738             CaptureMouse();
2739         }
2740     }
2741     else if ( event.Moving() )
2742     {
2743         if ( item != m_dropTarget )
2744         {
2745             // unhighlight the previous drop target
2746             DrawDropEffect(m_dropTarget);
2747
2748             m_dropTarget = item;
2749
2750             // highlight the current drop target if any
2751             DrawDropEffect(m_dropTarget);
2752
2753             wxYieldIfNeeded();
2754         }
2755     }
2756     else if ( (event.LeftUp() || event.RightUp()) && m_isDragging )
2757     {
2758         // erase the highlighting
2759         DrawDropEffect(m_dropTarget);
2760
2761         if ( m_oldSelection )
2762         {
2763             m_oldSelection->SetHilight(TRUE);
2764             RefreshLine(m_oldSelection);
2765             m_oldSelection = (wxGenericTreeItem *)NULL;
2766         }
2767
2768         // generate the drag end event
2769         wxTreeEvent event(wxEVT_COMMAND_TREE_END_DRAG, GetId());
2770
2771         event.m_item = (long) item;
2772         event.m_pointDrag = wxPoint(x, y);
2773         event.SetEventObject(this);
2774
2775         (void)GetEventHandler()->ProcessEvent(event);
2776
2777         m_isDragging = FALSE;
2778         m_dropTarget = (wxGenericTreeItem *)NULL;
2779
2780         ReleaseMouse();
2781
2782         SetCursor(m_oldCursor);
2783
2784         wxYieldIfNeeded();
2785     }
2786     else
2787     {
2788         // here we process only the messages which happen on tree items
2789
2790         m_dragCount = 0;
2791
2792         if (item == NULL) return;  /* we hit the blank area */
2793
2794         if ( event.RightDown() )
2795         {
2796             wxTreeEvent nevent(wxEVT_COMMAND_TREE_ITEM_RIGHT_CLICK, GetId());
2797             nevent.m_item = (long) item;
2798             CalcScrolledPosition(x, y,
2799                                  &nevent.m_pointDrag.x,
2800                                  &nevent.m_pointDrag.y);
2801             nevent.SetEventObject(this);
2802             GetEventHandler()->ProcessEvent(nevent);
2803         }
2804         else if ( event.LeftUp() )
2805         {
2806             if ( m_lastOnSame )
2807             {
2808                 if ( (item == m_current) &&
2809                      (flags & wxTREE_HITTEST_ONITEMLABEL) &&
2810                      HasFlag(wxTR_EDIT_LABELS) )
2811                 {
2812                     if ( m_renameTimer->IsRunning() )
2813                         m_renameTimer->Stop();
2814
2815                     m_renameTimer->Start( 100, TRUE );
2816                 }
2817
2818                 m_lastOnSame = FALSE;
2819             }
2820         }
2821         else // !RightDown() && !LeftUp() ==> LeftDown() || LeftDClick()
2822         {
2823             if ( event.LeftDown() )
2824             {
2825                 m_lastOnSame = item == m_current;
2826             }
2827
2828             if ( flags & wxTREE_HITTEST_ONITEMBUTTON )
2829             {
2830                 // only toggle the item for a single click, double click on
2831                 // the button doesn't do anything (it toggles the item twice)
2832                 if ( event.LeftDown() )
2833                 {
2834                     Toggle( item );
2835                 }
2836
2837                 // don't select the item if the button was clicked
2838                 return;
2839             }
2840
2841             // how should the selection work for this event?
2842             bool is_multiple, extended_select, unselect_others;
2843             EventFlagsToSelType(GetWindowStyleFlag(),
2844                                 event.ShiftDown(),
2845                                 event.ControlDown(),
2846                                 is_multiple, extended_select, unselect_others);
2847
2848             SelectItem(item, unselect_others, extended_select);
2849
2850             // For some reason, Windows isn't recognizing a left double-click,
2851             // so we need to simulate it here.  Allow 200 milliseconds for now.
2852             if ( event.LeftDClick() )
2853             {
2854                 // double clicking should not start editing the item label
2855                 m_renameTimer->Stop();
2856                 m_lastOnSame = FALSE;
2857
2858                 // send activate event first
2859                 wxTreeEvent nevent( wxEVT_COMMAND_TREE_ITEM_ACTIVATED, GetId() );
2860                 nevent.m_item = (long) item;
2861                 CalcScrolledPosition(x, y,
2862                                      &nevent.m_pointDrag.x,
2863                                      &nevent.m_pointDrag.y);
2864                 nevent.SetEventObject( this );
2865                 if ( !GetEventHandler()->ProcessEvent( nevent ) )
2866                 {
2867                     // if the user code didn't process the activate event,
2868                     // handle it ourselves by toggling the item when it is
2869                     // double clicked
2870                     if ( item->HasPlus() )
2871                     {
2872                         Toggle(item);
2873                     }
2874                 }
2875             }
2876         }
2877     }
2878 }
2879
2880 void wxGenericTreeCtrl::OnIdle( wxIdleEvent &WXUNUSED(event) )
2881 {
2882     /* after all changes have been done to the tree control,
2883      * we actually redraw the tree when everything is over */
2884
2885     if (!m_dirty) return;
2886
2887     m_dirty = FALSE;
2888
2889     CalculatePositions();
2890     Refresh();
2891     AdjustMyScrollbars();
2892 }
2893
2894 void wxGenericTreeCtrl::CalculateSize( wxGenericTreeItem *item, wxDC &dc )
2895 {
2896     wxCoord text_w = 0;
2897     wxCoord text_h = 0;
2898
2899     wxTreeItemAttr *attr = item->GetAttributes();
2900     if ( attr && attr->HasFont() )
2901         dc.SetFont(attr->GetFont());
2902     else if ( item->IsBold() )
2903         dc.SetFont(m_boldFont);
2904
2905     dc.GetTextExtent( item->GetText(), &text_w, &text_h );
2906     text_h+=2;
2907
2908     // restore normal font
2909     dc.SetFont( m_normalFont );
2910
2911     int image_h = 0;
2912     int image_w = 0;
2913     int image = item->GetCurrentImage();
2914     if ( image != NO_IMAGE )
2915     {
2916         if ( m_imageListNormal )
2917         {
2918             m_imageListNormal->GetSize( image, image_w, image_h );
2919             image_w += 4;
2920         }
2921     }
2922
2923     int total_h = (image_h > text_h) ? image_h : text_h;
2924
2925     if (total_h < 30)
2926         total_h += 2;            // at least 2 pixels
2927     else
2928         total_h += total_h/10;   // otherwise 10% extra spacing
2929
2930     item->SetHeight(total_h);
2931     if (total_h>m_lineHeight)
2932         m_lineHeight=total_h;
2933
2934     item->SetWidth(image_w+text_w+2);
2935 }
2936
2937 // -----------------------------------------------------------------------------
2938 // for developper : y is now the top of the level
2939 // not the middle of it !
2940 void wxGenericTreeCtrl::CalculateLevel( wxGenericTreeItem *item, wxDC &dc, int level, int &y )
2941 {
2942     int x = level*m_indent;
2943     if (!HasFlag(wxTR_HIDE_ROOT))
2944     {
2945         x += m_indent;
2946     }
2947     else if (level == 0)
2948     {
2949         // a hidden root is not evaluated, but its
2950         // children are always calculated
2951         goto Recurse;
2952     }
2953
2954     CalculateSize( item, dc );
2955
2956     // set its position
2957     item->SetX( x+m_spacing );
2958     item->SetY( y );
2959     y += GetLineHeight(item);
2960
2961     if ( !item->IsExpanded() )
2962     {
2963         // we don't need to calculate collapsed branches
2964         return;
2965     }
2966
2967   Recurse:
2968     wxArrayGenericTreeItems& children = item->GetChildren();
2969     size_t n, count = children.Count();
2970     ++level;
2971     for (n = 0; n < count; ++n )
2972         CalculateLevel( children[n], dc, level, y );  // recurse
2973 }
2974
2975 void wxGenericTreeCtrl::CalculatePositions()
2976 {
2977     if ( !m_anchor ) return;
2978
2979     wxClientDC dc(this);
2980     PrepareDC( dc );
2981
2982     dc.SetFont( m_normalFont );
2983
2984     dc.SetPen( m_dottedPen );
2985     //if(GetImageList() == NULL)
2986     // m_lineHeight = (int)(dc.GetCharHeight() + 4);
2987
2988     int y = 2;
2989     CalculateLevel( m_anchor, dc, 0, y ); // start recursion
2990 }
2991
2992 void wxGenericTreeCtrl::RefreshSubtree(wxGenericTreeItem *item)
2993 {
2994     if (m_dirty) return;
2995
2996     wxClientDC dc(this);
2997     PrepareDC(dc);
2998
2999     wxRect client = GetClientRect();
3000
3001     wxRect rect;
3002     rect.x = dc.LogicalToDeviceX(-client.x);
3003     rect.width = client.width;
3004     rect.y = dc.LogicalToDeviceY(-client.y + item->GetY());
3005     rect.height = client.height;
3006
3007     Refresh(TRUE, &rect);
3008
3009     AdjustMyScrollbars();
3010 }
3011
3012 void wxGenericTreeCtrl::RefreshLine( wxGenericTreeItem *item )
3013 {
3014     if (m_dirty) return;
3015
3016     wxClientDC dc(this);
3017     PrepareDC(dc);
3018
3019     wxRect client = GetClientRect();
3020
3021     wxRect rect;
3022     rect.x = dc.LogicalToDeviceX(-client.x);
3023     rect.y = dc.LogicalToDeviceY(-client.y + item->GetY());
3024     rect.width = client.width;
3025     rect.height = GetLineHeight(item); //dc.GetCharHeight() + 6;
3026
3027     Refresh(TRUE, &rect);
3028 }
3029
3030 void wxGenericTreeCtrl::RefreshSelected()
3031 {
3032     // TODO: this is awfully inefficient, we should keep the list of all
3033     //       selected items internally, should be much faster
3034     if ( m_anchor )
3035         RefreshSelectedUnder(m_anchor);
3036 }
3037
3038 void wxGenericTreeCtrl::RefreshSelectedUnder(wxGenericTreeItem *item)
3039 {
3040     if ( item->IsSelected() )
3041         RefreshLine(item);
3042
3043     const wxArrayGenericTreeItems& children = item->GetChildren();
3044     size_t count = children.GetCount();
3045     for ( size_t n = 0; n < count; n++ )
3046     {
3047         RefreshSelectedUnder(children[n]);
3048     }
3049 }
3050
3051 // ----------------------------------------------------------------------------
3052 // changing colours: we need to refresh the tree control
3053 // ----------------------------------------------------------------------------
3054
3055 bool wxGenericTreeCtrl::SetBackgroundColour(const wxColour& colour)
3056 {
3057     if ( !wxWindow::SetBackgroundColour(colour) )
3058         return FALSE;
3059
3060     Refresh();
3061
3062     return TRUE;
3063 }
3064
3065 bool wxGenericTreeCtrl::SetForegroundColour(const wxColour& colour)
3066 {
3067     if ( !wxWindow::SetForegroundColour(colour) )
3068         return FALSE;
3069
3070     Refresh();
3071
3072     return TRUE;
3073 }
3074
3075 #endif // wxUSE_TREECTRL