src/msw/treectrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        treectrl.cpp
   3 // Purpose:     wxTreeCtrl
   4 // Author:      Julian Smart
   5 // Modified by: Vadim Zeitlin to be less MSW-specific on 10.10.98
   6 // Created:     1997
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19 #ifdef __GNUG__
  20     #pragma implementation "treectrl.h"
  21 #endif
  22
  23 // For compilers that support precompilation, includes "wx.h".
  24 #include "wx/wxprec.h"
  25
  26 #ifdef __BORLANDC__
  27     #pragma hdrstop
  28 #endif
  29
  30 #ifndef WX_PRECOMP
  31     #include "wx.h"
  32 #endif
  33
  34 #if defined(__WIN95__)
  35
  36 #include "wx/log.h"
  37 #include "wx/imaglist.h"
  38
  39 #include "wx/msw/private.h"
  40
  41 #ifndef __GNUWIN32__
  42     #include <commctrl.h>
  43 #endif
  44
  45 #ifdef GetFirstChild
  46 #undef GetFirstChild
  47 #endif
  48
  49 #ifdef GetNextChild
  50 #undef GetNextChild
  51 #endif
  52
  53 #ifdef GetNextSibling
  54 #undef GetNextSibling
  55 #endif
  56
  57 #include "wx/treectrl.h"
  58
  59 // Bug in headers, sometimes
  60 #ifndef TVIS_FOCUSED
  61     #define TVIS_FOCUSED            0x0001
  62 #endif
  63
  64 // ----------------------------------------------------------------------------
  65 // private classes
  66 // ----------------------------------------------------------------------------
  67
  68 // a convenient wrapper around TV_ITEM struct which adds a ctor
  69 struct wxTreeViewItem : public TV_ITEM
  70 {
  71     wxTreeViewItem(const wxTreeItemId& item,
  72                    UINT mask_, UINT stateMask_ = 0)
  73     {
  74         mask = mask_;
  75         stateMask = stateMask_;
  76         hItem = (HTREEITEM) (WXHTREEITEM) item;
  77     }
  78 };
  79
  80 // ----------------------------------------------------------------------------
  81 // macros
  82 // ----------------------------------------------------------------------------
  83
  84 #if !USE_SHARED_LIBRARY
  85     IMPLEMENT_DYNAMIC_CLASS(wxTreeCtrl, wxControl)
  86 #endif
  87
  88 // hide the ugly cast (of course, the macro is _quite_ ugly too...)
  89 #define wxhWnd    ((HWND)m_hWnd)
  90
  91 // ----------------------------------------------------------------------------
  92 // variables
  93 // ----------------------------------------------------------------------------
  94
  95 // handy table for sending events
  96 static const wxEventType g_events[2][2] =
  97 {
  98     { wxEVT_COMMAND_TREE_ITEM_COLLAPSED, wxEVT_COMMAND_TREE_ITEM_COLLAPSING },
  99     { wxEVT_COMMAND_TREE_ITEM_EXPANDED,  wxEVT_COMMAND_TREE_ITEM_EXPANDING  }
 100 };
 101
 102 // ============================================================================
 103 // implementation
 104 // ============================================================================
 105
 106 // ----------------------------------------------------------------------------
 107 // construction and destruction
 108 // ----------------------------------------------------------------------------
 109
 110 void wxTreeCtrl::Init()
 111 {
 112     m_imageListNormal = NULL;
 113     m_imageListState = NULL;
 114     m_textCtrl = NULL;
 115 }
 116
 117 bool wxTreeCtrl::Create(wxWindow *parent, wxWindowID id,
 118                         const wxPoint& pos, const wxSize& size,
 119                         long style, const wxValidator& validator,
 120                         const wxString& name)
 121 {
 122     Init();
 123
 124     wxSystemSettings settings;
 125
 126     SetName(name);
 127     SetValidator(validator);
 128
 129     m_windowStyle = style;
 130
 131     SetParent(parent);
 132
 133     m_windowId = (id == -1) ? NewControlId() : id;
 134
 135     DWORD wstyle = WS_VISIBLE | WS_CHILD | WS_TABSTOP | TVS_HASLINES;
 136
 137     bool want3D;
 138     WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ;
 139
 140     // Even with extended styles, need to combine with WS_BORDER
 141     // for them to look right.
 142     if ( want3D || wxStyleHasBorder(m_windowStyle) )
 143     {
 144         wstyle |= WS_BORDER;
 145     }
 146
 147     if ( m_windowStyle & wxTR_HAS_BUTTONS )
 148         wstyle |= TVS_HASBUTTONS;
 149
 150     if ( m_windowStyle & wxTR_EDIT_LABELS )
 151         wstyle |= TVS_EDITLABELS;
 152
 153     if ( m_windowStyle & wxTR_LINES_AT_ROOT )
 154         wstyle |= TVS_LINESATROOT;
 155
 156     // Create the tree control.
 157     m_hWnd = (WXHWND)::CreateWindowEx
 158                        (
 159                         exStyle,
 160                         WC_TREEVIEW,
 161                         "",
 162                         wstyle,
 163                         pos.x, pos.y, size.x, size.y,
 164                         (HWND)parent->GetHWND(),
 165                         (HMENU)m_windowId,
 166                         wxGetInstance(),
 167                         NULL
 168                        );
 169
 170     wxCHECK_MSG( m_hWnd, FALSE, "Failed to create tree ctrl" );
 171
 172     if ( parent )
 173         parent->AddChild(this);
 174
 175     SubclassWin(m_hWnd);
 176
 177     return TRUE;
 178 }
 179
 180 wxTreeCtrl::~wxTreeCtrl()
 181 {
 182     DeleteTextCtrl();
 183
 184     // delete user data to prevent memory leaks
 185     DeleteAllItems();
 186 }
 187
 188 // ----------------------------------------------------------------------------
 189 // accessors
 190 // ----------------------------------------------------------------------------
 191
 192 // simple wrappers which add error checking in debug mode
 193
 194 bool wxTreeCtrl::DoGetItem(wxTreeViewItem* tvItem) const
 195 {
 196     if ( !TreeView_GetItem(wxhWnd, tvItem) )
 197     {
 198         wxLogLastError("TreeView_GetItem");
 199
 200         return FALSE;
 201     }
 202
 203     return TRUE;
 204 }
 205
 206 void wxTreeCtrl::DoSetItem(wxTreeViewItem* tvItem)
 207 {
 208     if ( TreeView_SetItem(wxhWnd, tvItem) == -1 )
 209     {
 210         wxLogLastError("TreeView_SetItem");
 211     }
 212 }
 213
 214 size_t wxTreeCtrl::GetCount() const
 215 {
 216     return (size_t)TreeView_GetCount(wxhWnd);
 217 }
 218
 219 unsigned int wxTreeCtrl::GetIndent() const
 220 {
 221     return TreeView_GetIndent(wxhWnd);
 222 }
 223
 224 void wxTreeCtrl::SetIndent(unsigned int indent)
 225 {
 226     TreeView_SetIndent(wxhWnd, indent);
 227 }
 228
 229 wxImageList *wxTreeCtrl::GetImageList() const
 230 {
 231     return m_imageListNormal;
 232 }
 233
 234 wxImageList *wxTreeCtrl::GetStateImageList() const
 235 {
 236     return m_imageListNormal;
 237 }
 238
 239 void wxTreeCtrl::SetAnyImageList(wxImageList *imageList, int which)
 240 {
 241     // no error return
 242     TreeView_SetImageList(wxhWnd,
 243                           imageList ? imageList->GetHIMAGELIST() : 0,
 244                           which);
 245 }
 246
 247 void wxTreeCtrl::SetImageList(wxImageList *imageList)
 248 {
 249     SetAnyImageList(m_imageListNormal = imageList, TVSIL_NORMAL);
 250 }
 251
 252 void wxTreeCtrl::SetStateImageList(wxImageList *imageList)
 253 {
 254     SetAnyImageList(m_imageListState = imageList, TVSIL_STATE);
 255 }
 256
 257 // ----------------------------------------------------------------------------
 258 // Item access
 259 // ----------------------------------------------------------------------------
 260
 261 wxString wxTreeCtrl::GetItemText(const wxTreeItemId& item) const
 262 {
 263     char buf[512];  // the size is arbitrary...
 264
 265     wxTreeViewItem tvItem(item, TVIF_TEXT);
 266     tvItem.pszText = buf;
 267     tvItem.cchTextMax = WXSIZEOF(buf);
 268     if ( !DoGetItem(&tvItem) )
 269     {
 270         // don't return some garbage which was on stack, but an empty string
 271         buf[0] = '\0';
 272     }
 273
 274     return wxString(buf);
 275 }
 276
 277 void wxTreeCtrl::SetItemText(const wxTreeItemId& item, const wxString& text)
 278 {
 279     wxTreeViewItem tvItem(item, TVIF_TEXT);
 280     tvItem.pszText = (char *)text.c_str();  // conversion is ok
 281     DoSetItem(&tvItem);
 282 }
 283
 284 int wxTreeCtrl::GetItemImage(const wxTreeItemId& item) const
 285 {
 286     wxTreeViewItem tvItem(item, TVIF_IMAGE);
 287     DoGetItem(&tvItem);
 288
 289     return tvItem.iImage;
 290 }
 291
 292 void wxTreeCtrl::SetItemImage(const wxTreeItemId& item, int image)
 293 {
 294     wxTreeViewItem tvItem(item, TVIF_IMAGE);
 295     tvItem.iImage = image;
 296     DoSetItem(&tvItem);
 297 }
 298
 299 int wxTreeCtrl::GetItemSelectedImage(const wxTreeItemId& item) const
 300 {
 301     wxTreeViewItem tvItem(item, TVIF_SELECTEDIMAGE);
 302     DoGetItem(&tvItem);
 303
 304     return tvItem.iSelectedImage;
 305 }
 306
 307 void wxTreeCtrl::SetItemSelectedImage(const wxTreeItemId& item, int image)
 308 {
 309     wxTreeViewItem tvItem(item, TVIF_SELECTEDIMAGE);
 310     tvItem.iSelectedImage = image;
 311     DoSetItem(&tvItem);
 312 }
 313
 314 wxTreeItemData *wxTreeCtrl::GetItemData(const wxTreeItemId& item) const
 315 {
 316     wxTreeViewItem tvItem(item, TVIF_PARAM);
 317     if ( !DoGetItem(&tvItem) )
 318     {
 319         return NULL;
 320     }
 321
 322     return (wxTreeItemData *)tvItem.lParam;
 323 }
 324
 325 void wxTreeCtrl::SetItemData(const wxTreeItemId& item, wxTreeItemData *data)
 326 {
 327     wxTreeViewItem tvItem(item, TVIF_PARAM);
 328     tvItem.lParam = (LPARAM)data;
 329     DoSetItem(&tvItem);
 330 }
 331
 332 void wxTreeCtrl::SetItemHasChildren(const wxTreeItemId& item, bool has)
 333 {
 334     wxTreeViewItem tvItem(item, TVIF_CHILDREN);
 335     tvItem.cChildren = (int)has;
 336     DoSetItem(&tvItem);
 337 }
 338
 339 // ----------------------------------------------------------------------------
 340 // Item status
 341 // ----------------------------------------------------------------------------
 342
 343 bool wxTreeCtrl::IsVisible(const wxTreeItemId& item) const
 344 {
 345     RECT rect;
 346 //    return (TreeView_GetItemRect(wxhWnd, (HTREEITEM) (WXHTREEITEM)item, &rect, FALSE) != 0);
 347     // Bug in Gnu-Win32 headers, so don't use the macro.
 348     return (SendMessage((wxhWnd), TVM_GETITEMRECT, (WPARAM) FALSE, (LPARAM) & rect) != 0);
 349
 350 }
 351
 352 bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
 353 {
 354     wxTreeViewItem tvItem(item, TVIF_CHILDREN);
 355     DoGetItem(&tvItem);
 356
 357     return tvItem.cChildren != 0;
 358 }
 359
 360 bool wxTreeCtrl::IsExpanded(const wxTreeItemId& item) const
 361 {
 362     // probably not a good idea to put it here
 363     //wxASSERT( ItemHasChildren(item) );
 364
 365     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_EXPANDED);
 366     DoGetItem(&tvItem);
 367
 368     return (tvItem.state & TVIS_EXPANDED) != 0;
 369 }
 370
 371 bool wxTreeCtrl::IsSelected(const wxTreeItemId& item) const
 372 {
 373     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_SELECTED);
 374     DoGetItem(&tvItem);
 375
 376     return (tvItem.state & TVIS_SELECTED) != 0;
 377 }
 378
 379 // ----------------------------------------------------------------------------
 380 // navigation
 381 // ----------------------------------------------------------------------------
 382
 383 wxTreeItemId wxTreeCtrl::GetRootItem() const
 384 {
 385     return wxTreeItemId((WXHTREEITEM) TreeView_GetRoot(wxhWnd));
 386 }
 387
 388 wxTreeItemId wxTreeCtrl::GetSelection() const
 389 {
 390     return wxTreeItemId((WXHTREEITEM) TreeView_GetSelection(wxhWnd));
 391 }
 392
 393 wxTreeItemId wxTreeCtrl::GetParent(const wxTreeItemId& item) const
 394 {
 395     return wxTreeItemId((WXHTREEITEM) TreeView_GetParent(wxhWnd, (HTREEITEM) (WXHTREEITEM) item));
 396 }
 397
 398 wxTreeItemId wxTreeCtrl::GetFirstChild(const wxTreeItemId& item,
 399                                        long& _cookie) const
 400 {
 401     // remember the last child returned in 'cookie'
 402     _cookie = (long)TreeView_GetChild(wxhWnd, (HTREEITEM) (WXHTREEITEM)item);
 403
 404     return wxTreeItemId((WXHTREEITEM)_cookie);
 405 }
 406
 407 wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& WXUNUSED(item),
 408                                       long& _cookie) const
 409 {
 410     wxTreeItemId l=wxTreeItemId((WXHTREEITEM) TreeView_GetNextSibling(wxhWnd,
 411                 (HTREEITEM) (WXHTREEITEM)_cookie));
 412     _cookie=(long)l;
 413     return l;
 414 }
 415
 416 wxTreeItemId wxTreeCtrl::GetNextSibling(const wxTreeItemId& item) const
 417 {
 418     return wxTreeItemId((WXHTREEITEM) TreeView_GetNextSibling(wxhWnd, (HTREEITEM) (WXHTREEITEM) item));
 419 }
 420
 421 wxTreeItemId wxTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const
 422 {
 423     return wxTreeItemId((WXHTREEITEM) TreeView_GetPrevSibling(wxhWnd, (HTREEITEM) (WXHTREEITEM) item));
 424 }
 425
 426 wxTreeItemId wxTreeCtrl::GetFirstVisibleItem() const
 427 {
 428     return wxTreeItemId((WXHTREEITEM) TreeView_GetFirstVisible(wxhWnd));
 429 }
 430
 431 wxTreeItemId wxTreeCtrl::GetNextVisible(const wxTreeItemId& item) const
 432 {
 433     wxASSERT_MSG( IsVisible(item), "The item you call GetNextVisible() "
 434                                    "for must be visible itself!");
 435
 436     return wxTreeItemId((WXHTREEITEM) TreeView_GetNextVisible(wxhWnd, (HTREEITEM) (WXHTREEITEM) item));
 437 }
 438
 439 wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
 440 {
 441     wxASSERT_MSG( IsVisible(item), "The item you call GetPrevVisible() "
 442                                    "for must be visible itself!");
 443
 444     return wxTreeItemId((WXHTREEITEM) TreeView_GetPrevVisible(wxhWnd, (HTREEITEM) (WXHTREEITEM) item));
 445 }
 446
 447 // ----------------------------------------------------------------------------
 448 // Usual operations
 449 // ----------------------------------------------------------------------------
 450
 451 wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parent,
 452                                       wxTreeItemId hInsertAfter,
 453                                       const wxString& text,
 454                                       int image, int selectedImage,
 455                                       wxTreeItemData *data)
 456 {
 457     TV_INSERTSTRUCT tvIns;
 458     tvIns.hParent = (HTREEITEM) (WXHTREEITEM)parent;
 459     tvIns.hInsertAfter = (HTREEITEM) (WXHTREEITEM) hInsertAfter;
 460     UINT mask = 0;
 461     if ( !text.IsEmpty() )
 462     {
 463         mask |= TVIF_TEXT;
 464         tvIns.item.pszText = (char *)text.c_str();  // cast is ok
 465     }
 466
 467     if ( image != -1 )
 468     {
 469         mask |= TVIF_IMAGE;
 470         tvIns.item.iImage = image;
 471
 472         if ( selectedImage == -1 )
 473         {
 474             // take the same image for selected icon if not specified
 475             selectedImage = image;
 476         }
 477     }
 478
 479     if ( selectedImage != -1 )
 480     {
 481         mask |= TVIF_SELECTEDIMAGE;
 482         tvIns.item.iSelectedImage = selectedImage;
 483     }
 484
 485     if ( data != NULL )
 486     {
 487         mask |= TVIF_PARAM;
 488         tvIns.item.lParam = (LPARAM)data;
 489     }
 490
 491     tvIns.item.mask = mask;
 492
 493     HTREEITEM id = TreeView_InsertItem(wxhWnd, &tvIns);
 494     if ( id == 0 )
 495     {
 496         wxLogLastError("TreeView_InsertItem");
 497     }
 498
 499     if ( data != NULL )
 500     {
 501         // associate the application tree item with Win32 tree item handle
 502         data->SetId((WXHTREEITEM)id);
 503     }
 504
 505     return wxTreeItemId((WXHTREEITEM)id);
 506 }
 507
 508 // for compatibility only
 509 wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parent,
 510                                     const wxString& text,
 511                                     int image, int selImage,
 512                                     long insertAfter)
 513 {
 514     return DoInsertItem(parent, (WXHTREEITEM)insertAfter, text,
 515                         image, selImage, NULL);
 516 }
 517
 518 wxTreeItemId wxTreeCtrl::AddRoot(const wxString& text,
 519                                  int image, int selectedImage,
 520                                  wxTreeItemData *data)
 521 {
 522     return DoInsertItem(wxTreeItemId((WXHTREEITEM) 0), (WXHTREEITEM) 0,
 523                         text, image, selectedImage, data);
 524 }
 525
 526 wxTreeItemId wxTreeCtrl::PrependItem(const wxTreeItemId& parent,
 527                                      const wxString& text,
 528                                      int image, int selectedImage,
 529                                      wxTreeItemData *data)
 530 {
 531     return DoInsertItem(parent, (WXHTREEITEM) TVI_FIRST,
 532                         text, image, selectedImage, data);
 533 }
 534
 535 wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parent,
 536                                     const wxTreeItemId& idPrevious,
 537                                     const wxString& text,
 538                                     int image, int selectedImage,
 539                                     wxTreeItemData *data)
 540 {
 541     return DoInsertItem(parent, idPrevious, text, image, selectedImage, data);
 542 }
 543
 544 wxTreeItemId wxTreeCtrl::AppendItem(const wxTreeItemId& parent,
 545                                     const wxString& text,
 546                                     int image, int selectedImage,
 547                                     wxTreeItemData *data)
 548 {
 549     return DoInsertItem(parent, (WXHTREEITEM) TVI_LAST,
 550                         text, image, selectedImage, data);
 551 }
 552
 553 void wxTreeCtrl::Delete(const wxTreeItemId& item)
 554 {
 555     wxTreeItemData *data = GetItemData(item);
 556         if(data!=NULL)
 557                 delete data;    // may be NULL, ok
 558
 559     if ( !TreeView_DeleteItem(wxhWnd, (HTREEITEM)(WXHTREEITEM)item) )
 560     {
 561         wxLogLastError("TreeView_DeleteItem");
 562     }
 563 }
 564
 565 void wxTreeCtrl::DeleteAllItems()
 566 {
 567     if ( !TreeView_DeleteAllItems(wxhWnd) )
 568     {
 569         wxLogLastError("TreeView_DeleteAllItems");
 570     }
 571 }
 572
 573 void wxTreeCtrl::DoExpand(const wxTreeItemId& item, int flag)
 574 {
 575     wxASSERT_MSG( flag == TVE_COLLAPSE || flag == TVE_COLLAPSERESET ||
 576                   flag == TVE_EXPAND   || flag == TVE_TOGGLE,
 577                   "Unknown flag in wxTreeCtrl::DoExpand" );
 578
 579     // TreeView_Expand doesn't send TVN_ITEMEXPAND(ING) messages, so we must
 580     // emulate them
 581     if ( TreeView_Expand(wxhWnd, (HTREEITEM) (WXHTREEITEM) item, flag) != 0 )
 582     {
 583         wxTreeEvent event(wxEVT_NULL, m_windowId);
 584         event.m_item = item;
 585
 586         bool isExpanded = IsExpanded(item);
 587
 588         event.SetEventObject(this);
 589
 590         // @@@ return values of {EXPAND|COLLAPS}ING event handler is discarded
 591         event.SetEventType(g_events[isExpanded][TRUE]);
 592         GetEventHandler()->ProcessEvent(event);
 593
 594         event.SetEventType(g_events[isExpanded][FALSE]);
 595         GetEventHandler()->ProcessEvent(event);
 596     }
 597     else
 598     {
 599         // I wonder if it really ever happens...
 600         wxLogDebug("TreeView_Expand: change didn't took place.");
 601     }
 602 }
 603
 604 void wxTreeCtrl::Expand(const wxTreeItemId& item)
 605 {
 606     DoExpand(item, TVE_EXPAND);
 607 }
 608
 609 void wxTreeCtrl::Collapse(const wxTreeItemId& item)
 610 {
 611     DoExpand(item, TVE_COLLAPSE);
 612 }
 613
 614 void wxTreeCtrl::CollapseAndReset(const wxTreeItemId& item)
 615 {
 616     DoExpand(item, TVE_COLLAPSERESET);
 617 }
 618
 619 void wxTreeCtrl::Toggle(const wxTreeItemId& item)
 620 {
 621     DoExpand(item, TVE_TOGGLE);
 622 }
 623
 624 void wxTreeCtrl::ExpandItem(const wxTreeItemId& item, int action)
 625 {
 626         DoExpand(item, action);
 627 }
 628
 629 void wxTreeCtrl::Unselect()
 630 {
 631     SelectItem(wxTreeItemId((WXHTREEITEM) 0));
 632 }
 633
 634 void wxTreeCtrl::SelectItem(const wxTreeItemId& item)
 635 {
 636     if ( !TreeView_SelectItem(wxhWnd, (HTREEITEM) (WXHTREEITEM) item) )
 637     {
 638         wxLogLastError("TreeView_SelectItem");
 639     }
 640 }
 641
 642 void wxTreeCtrl::EnsureVisible(const wxTreeItemId& item)
 643 {
 644     // no error return
 645     TreeView_EnsureVisible(wxhWnd, (HTREEITEM) (WXHTREEITEM) item);
 646 }
 647
 648 void wxTreeCtrl::ScrollTo(const wxTreeItemId& item)
 649 {
 650     if ( !TreeView_SelectSetFirstVisible(wxhWnd, (HTREEITEM) (WXHTREEITEM) item) )
 651     {
 652         wxLogLastError("TreeView_SelectSetFirstVisible");
 653     }
 654 }
 655
 656 wxTextCtrl* wxTreeCtrl::GetEditControl() const
 657 {
 658     return m_textCtrl;
 659 }
 660
 661 void wxTreeCtrl::DeleteTextCtrl()
 662 {
 663     if ( m_textCtrl )
 664     {
 665         m_textCtrl->UnsubclassWin();
 666         m_textCtrl->SetHWND(0);
 667         delete m_textCtrl;
 668         m_textCtrl = NULL;
 669     }
 670 }
 671
 672 wxTextCtrl* wxTreeCtrl::EditLabel(const wxTreeItemId& item,
 673                                   wxClassInfo* textControlClass)
 674 {
 675     wxASSERT( textControlClass->IsKindOf(CLASSINFO(wxTextCtrl)) );
 676
 677     HWND hWnd = (HWND) TreeView_EditLabel(wxhWnd, (HTREEITEM) (WXHTREEITEM) item);
 678
 679     wxCHECK_MSG( hWnd, NULL, "Can't edit tree ctrl label" );
 680
 681     DeleteTextCtrl();
 682
 683     m_textCtrl = (wxTextCtrl *)textControlClass->CreateObject();
 684     m_textCtrl->SetHWND((WXHWND)hWnd);
 685     m_textCtrl->SubclassWin((WXHWND)hWnd);
 686
 687     return m_textCtrl;
 688 }
 689
 690 // End label editing, optionally cancelling the edit
 691 void wxTreeCtrl::EndEditLabel(const wxTreeItemId& item, bool discardChanges)
 692 {
 693     TreeView_EndEditLabelNow(wxhWnd, discardChanges);
 694
 695     DeleteTextCtrl();
 696 }
 697
 698 wxTreeItemId wxTreeCtrl::HitTest(const wxPoint& point, int& flags)
 699 {
 700     TV_HITTESTINFO hitTestInfo;
 701     hitTestInfo.pt.x = (int)point.x;
 702     hitTestInfo.pt.y = (int)point.y;
 703
 704     TreeView_HitTest(wxhWnd, &hitTestInfo);
 705
 706     flags = 0;
 707
 708     // avoid repetition
 709     #define TRANSLATE_FLAG(flag) if ( hitTestInfo.flags & TVHT_##flag ) \
 710                                     flags |= wxTREE_HITTEST_##flag
 711
 712     TRANSLATE_FLAG(ABOVE);
 713     TRANSLATE_FLAG(BELOW);
 714     TRANSLATE_FLAG(NOWHERE);
 715     TRANSLATE_FLAG(ONITEMBUTTON);
 716     TRANSLATE_FLAG(ONITEMICON);
 717     TRANSLATE_FLAG(ONITEMINDENT);
 718     TRANSLATE_FLAG(ONITEMLABEL);
 719     TRANSLATE_FLAG(ONITEMRIGHT);
 720     TRANSLATE_FLAG(ONITEMSTATEICON);
 721     TRANSLATE_FLAG(TOLEFT);
 722     TRANSLATE_FLAG(TORIGHT);
 723
 724     #undef TRANSLATE_FLAG
 725
 726     return wxTreeItemId((WXHTREEITEM) hitTestInfo.hItem);
 727 }
 728
 729 void wxTreeCtrl::SortChildren(const wxTreeItemId& item,
 730                               wxTreeItemCmpFunc *cmpFunction)
 731 {
 732     if ( cmpFunction == NULL )
 733     {
 734         TreeView_SortChildren(wxhWnd, (HTREEITEM) (WXHTREEITEM) item, 0);
 735     }
 736     else
 737     {
 738         // TODO: use TreeView_SortChildrenCB
 739         wxFAIL_MSG("wxTreeCtrl::SortChildren not implemented");
 740     }
 741 }
 742
 743 // ----------------------------------------------------------------------------
 744 // implementation
 745 // ----------------------------------------------------------------------------
 746
 747 bool wxTreeCtrl::MSWCommand(WXUINT cmd, WXWORD id)
 748 {
 749     if ( cmd == EN_UPDATE )
 750     {
 751         wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, id);
 752         event.SetEventObject( this );
 753         ProcessCommand(event);
 754     }
 755     else if ( cmd == EN_KILLFOCUS )
 756     {
 757         wxCommandEvent event(wxEVT_KILL_FOCUS, id);
 758         event.SetEventObject( this );
 759         ProcessCommand(event);
 760     }
 761     else
 762     {
 763         // nothing done
 764         return FALSE;
 765     }
 766
 767     // command processed
 768     return TRUE;
 769 }
 770
 771 // process WM_NOTIFY Windows message
 772 bool wxTreeCtrl::MSWNotify(WXWPARAM wParam, WXLPARAM lParam, WXLPARAM *result)
 773 {
 774     wxTreeEvent event(wxEVT_NULL, m_windowId);
 775     wxEventType eventType = wxEVT_NULL;
 776     NMHDR *hdr = (NMHDR *)lParam;
 777
 778     switch ( hdr->code )
 779     {
 780         case TVN_BEGINDRAG:
 781             eventType = wxEVT_COMMAND_TREE_BEGIN_DRAG;
 782             // fall through
 783
 784         case TVN_BEGINRDRAG:
 785             {
 786                 if ( eventType == wxEVT_NULL )
 787                     eventType = wxEVT_COMMAND_TREE_BEGIN_RDRAG;
 788                 //else: left drag, already set above
 789
 790                 NM_TREEVIEW *tv = (NM_TREEVIEW *)lParam;
 791
 792                 event.m_item = (WXHTREEITEM) tv->itemNew.hItem;
 793                 event.m_pointDrag = wxPoint(tv->ptDrag.x, tv->ptDrag.y);
 794                 break;
 795             }
 796
 797         case TVN_BEGINLABELEDIT:
 798             {
 799                 eventType = wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT;
 800                 TV_DISPINFO *info = (TV_DISPINFO *)lParam;
 801
 802                 event.m_item = (WXHTREEITEM) info->item.hItem;
 803                 break;
 804             }
 805
 806         case TVN_DELETEITEM:
 807             {
 808                 eventType = wxEVT_COMMAND_TREE_DELETE_ITEM;
 809                 NM_TREEVIEW *tv = (NM_TREEVIEW *)lParam;
 810
 811                 event.m_item = (WXHTREEITEM) tv->itemOld.hItem;
 812                 break;
 813             }
 814
 815         case TVN_ENDLABELEDIT:
 816             {
 817                 eventType = wxEVT_COMMAND_TREE_END_LABEL_EDIT;
 818                 TV_DISPINFO *info = (TV_DISPINFO *)lParam;
 819
 820                 event.m_item = (WXHTREEITEM) info->item.hItem;
 821                 break;
 822             }
 823
 824         case TVN_GETDISPINFO:
 825             eventType = wxEVT_COMMAND_TREE_GET_INFO;
 826             // fall through
 827
 828         case TVN_SETDISPINFO:
 829             {
 830                 if ( eventType == wxEVT_NULL )
 831                     eventType = wxEVT_COMMAND_TREE_SET_INFO;
 832                 //else: get, already set above
 833
 834                 TV_DISPINFO *info = (TV_DISPINFO *)lParam;
 835
 836                 event.m_item = (WXHTREEITEM) info->item.hItem;
 837                 break;
 838             }
 839
 840         case TVN_ITEMEXPANDING:
 841             event.m_code = FALSE;
 842             // fall through
 843
 844         case TVN_ITEMEXPANDED:
 845             {
 846                 NM_TREEVIEW* tv = (NM_TREEVIEW*)lParam;
 847
 848                 bool expand = FALSE;
 849                 switch ( tv->action )
 850                 {
 851                     case TVE_EXPAND:
 852                         expand = TRUE;
 853                         break;
 854
 855                     case TVE_COLLAPSE:
 856                         expand = FALSE;
 857                         break;
 858
 859                     default:
 860                         wxLogDebug("unexpected code %d in TVN_ITEMEXPAND "
 861                                    "message", tv->action);
 862                 }
 863
 864                 bool ing = (hdr->code == TVN_ITEMEXPANDING);
 865                 eventType = g_events[expand][ing];
 866
 867                 event.m_item = (WXHTREEITEM) tv->itemNew.hItem;
 868                 break;
 869             }
 870
 871         case TVN_KEYDOWN:
 872             {
 873                 eventType = wxEVT_COMMAND_TREE_KEY_DOWN;
 874                 TV_KEYDOWN *info = (TV_KEYDOWN *)lParam;
 875
 876                 event.m_code = wxCharCodeMSWToWX(info->wVKey);
 877                 break;
 878             }
 879
 880         case TVN_SELCHANGED:
 881             eventType = wxEVT_COMMAND_TREE_SEL_CHANGED;
 882             // fall through
 883
 884         case TVN_SELCHANGING:
 885             {
 886                 if ( eventType == wxEVT_NULL )
 887                     eventType = wxEVT_COMMAND_TREE_SEL_CHANGING;
 888                 //else: already set above
 889
 890                 NM_TREEVIEW* tv = (NM_TREEVIEW *)lParam;
 891
 892                 event.m_item = (WXHTREEITEM) tv->itemNew.hItem;
 893                 event.m_itemOld = (WXHTREEITEM) tv->itemOld.hItem;
 894                 break;
 895             }
 896
 897         default:
 898             return wxControl::MSWNotify(wParam, lParam, result);
 899     }
 900
 901     event.SetEventObject(this);
 902     event.SetEventType(eventType);
 903
 904     bool processed = GetEventHandler()->ProcessEvent(event);
 905
 906     // post processing
 907     if ( hdr->code == TVN_DELETEITEM )
 908     {
 909         // NB: we might process this message using wxWindows event tables, but
 910         //     due to overhead of wxWin event system we prefer to do it here
 911         //     (otherwise deleting a tree with many items is just too slow)
 912         NM_TREEVIEW* tv = (NM_TREEVIEW *)lParam;
 913         wxTreeItemData *data = (wxTreeItemData *)tv->itemOld.lParam;
 914         delete data; // may be NULL, ok
 915     }
 916
 917     *result = !event.IsAllowed();
 918
 919     return processed;
 920 }
 921
 922 // ----------------------------------------------------------------------------
 923 // Tree event
 924 // ----------------------------------------------------------------------------
 925
 926 IMPLEMENT_DYNAMIC_CLASS(wxTreeEvent, wxCommandEvent)
 927
 928 wxTreeEvent::wxTreeEvent(wxEventType commandType, int id)
 929            : wxNotifyEvent(commandType, id)
 930 {
 931     m_code = 0;
 932     m_itemOld = 0;
 933 }
 934
 935 #endif // __WIN95__
 936