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/msw/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 void wxTreeCtrl::SetItemBold(const wxTreeItemId& item, bool bold)
 340 {
 341     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_BOLD);
 342     tvItem.state = bold ? TVIS_BOLD : 0;
 343     DoSetItem(&tvItem);
 344 }
 345
 346 // ----------------------------------------------------------------------------
 347 // Item status
 348 // ----------------------------------------------------------------------------
 349
 350 bool wxTreeCtrl::IsVisible(const wxTreeItemId& item) const
 351 {
 352     // Bug in Gnu-Win32 headers, so don't use the macro TreeView_GetItemRect
 353     RECT rect;
 354     return SendMessage(wxhWnd, TVM_GETITEMRECT, FALSE, (LPARAM)&rect) != 0;
 355
 356 }
 357
 358 bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
 359 {
 360     wxTreeViewItem tvItem(item, TVIF_CHILDREN);
 361     DoGetItem(&tvItem);
 362
 363     return tvItem.cChildren != 0;
 364 }
 365
 366 bool wxTreeCtrl::IsExpanded(const wxTreeItemId& item) const
 367 {
 368     // probably not a good idea to put it here
 369     //wxASSERT( ItemHasChildren(item) );
 370
 371     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_EXPANDED);
 372     DoGetItem(&tvItem);
 373
 374     return (tvItem.state & TVIS_EXPANDED) != 0;
 375 }
 376
 377 bool wxTreeCtrl::IsSelected(const wxTreeItemId& item) const
 378 {
 379     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_SELECTED);
 380     DoGetItem(&tvItem);
 381
 382     return (tvItem.state & TVIS_SELECTED) != 0;
 383 }
 384
 385 bool wxTreeCtrl::IsBold(const wxTreeItemId& item) const
 386 {
 387     wxTreeViewItem tvItem(item, TVIF_STATE, TVIS_BOLD);
 388     DoGetItem(&tvItem);
 389
 390     return (tvItem.state & TVIS_BOLD) != 0;
 391 }
 392
 393 // ----------------------------------------------------------------------------
 394 // navigation
 395 // ----------------------------------------------------------------------------
 396
 397 wxTreeItemId wxTreeCtrl::GetRootItem() const
 398 {
 399     return wxTreeItemId((WXHTREEITEM) TreeView_GetRoot(wxhWnd));
 400 }
 401
 402 wxTreeItemId wxTreeCtrl::GetSelection() const
 403 {
 404     return wxTreeItemId((WXHTREEITEM) TreeView_GetSelection(wxhWnd));
 405 }
 406
 407 wxTreeItemId wxTreeCtrl::GetParent(const wxTreeItemId& item) const
 408 {
 409     return wxTreeItemId((WXHTREEITEM) TreeView_GetParent(wxhWnd, (HTREEITEM) (WXHTREEITEM) item));
 410 }
 411
 412 wxTreeItemId wxTreeCtrl::GetFirstChild(const wxTreeItemId& item,
 413                                        long& _cookie) const
 414 {
 415     // remember the last child returned in 'cookie'
 416     _cookie = (long)TreeView_GetChild(wxhWnd, (HTREEITEM) (WXHTREEITEM)item);
 417
 418     return wxTreeItemId((WXHTREEITEM)_cookie);
 419 }
 420
 421 wxTreeItemId wxTreeCtrl::GetNextChild(const wxTreeItemId& WXUNUSED(item),
 422                                       long& _cookie) const
 423 {
 424     wxTreeItemId l=wxTreeItemId((WXHTREEITEM) TreeView_GetNextSibling(wxhWnd,
 425                 (HTREEITEM) (WXHTREEITEM)_cookie));
 426     _cookie=(long)l;
 427     return l;
 428 }
 429
 430 wxTreeItemId wxTreeCtrl::GetNextSibling(const wxTreeItemId& item) const
 431 {
 432     return wxTreeItemId((WXHTREEITEM) TreeView_GetNextSibling(wxhWnd, (HTREEITEM) (WXHTREEITEM) item));
 433 }
 434
 435 wxTreeItemId wxTreeCtrl::GetPrevSibling(const wxTreeItemId& item) const
 436 {
 437     return wxTreeItemId((WXHTREEITEM) TreeView_GetPrevSibling(wxhWnd, (HTREEITEM) (WXHTREEITEM) item));
 438 }
 439
 440 wxTreeItemId wxTreeCtrl::GetFirstVisibleItem() const
 441 {
 442     return wxTreeItemId((WXHTREEITEM) TreeView_GetFirstVisible(wxhWnd));
 443 }
 444
 445 wxTreeItemId wxTreeCtrl::GetNextVisible(const wxTreeItemId& item) const
 446 {
 447     wxASSERT_MSG( IsVisible(item), "The item you call GetNextVisible() "
 448                                    "for must be visible itself!");
 449
 450     return wxTreeItemId((WXHTREEITEM) TreeView_GetNextVisible(wxhWnd, (HTREEITEM) (WXHTREEITEM) item));
 451 }
 452
 453 wxTreeItemId wxTreeCtrl::GetPrevVisible(const wxTreeItemId& item) const
 454 {
 455     wxASSERT_MSG( IsVisible(item), "The item you call GetPrevVisible() "
 456                                    "for must be visible itself!");
 457
 458     return wxTreeItemId((WXHTREEITEM) TreeView_GetPrevVisible(wxhWnd, (HTREEITEM) (WXHTREEITEM) item));
 459 }
 460
 461 // ----------------------------------------------------------------------------
 462 // Usual operations
 463 // ----------------------------------------------------------------------------
 464
 465 wxTreeItemId wxTreeCtrl::DoInsertItem(const wxTreeItemId& parent,
 466                                       wxTreeItemId hInsertAfter,
 467                                       const wxString& text,
 468                                       int image, int selectedImage,
 469                                       wxTreeItemData *data)
 470 {
 471     TV_INSERTSTRUCT tvIns;
 472     tvIns.hParent = (HTREEITEM) (WXHTREEITEM)parent;
 473     tvIns.hInsertAfter = (HTREEITEM) (WXHTREEITEM) hInsertAfter;
 474     UINT mask = 0;
 475     if ( !text.IsEmpty() )
 476     {
 477         mask |= TVIF_TEXT;
 478         tvIns.item.pszText = (char *)text.c_str();  // cast is ok
 479     }
 480
 481     if ( image != -1 )
 482     {
 483         mask |= TVIF_IMAGE;
 484         tvIns.item.iImage = image;
 485
 486         if ( selectedImage == -1 )
 487         {
 488             // take the same image for selected icon if not specified
 489             selectedImage = image;
 490         }
 491     }
 492
 493     if ( selectedImage != -1 )
 494     {
 495         mask |= TVIF_SELECTEDIMAGE;
 496         tvIns.item.iSelectedImage = selectedImage;
 497     }
 498
 499     if ( data != NULL )
 500     {
 501         mask |= TVIF_PARAM;
 502         tvIns.item.lParam = (LPARAM)data;
 503     }
 504
 505     tvIns.item.mask = mask;
 506
 507     HTREEITEM id = (HTREEITEM) TreeView_InsertItem(wxhWnd, &tvIns);
 508     if ( id == 0 )
 509     {
 510         wxLogLastError("TreeView_InsertItem");
 511     }
 512
 513     if ( data != NULL )
 514     {
 515         // associate the application tree item with Win32 tree item handle
 516         data->SetId((WXHTREEITEM)id);
 517     }
 518
 519     return wxTreeItemId((WXHTREEITEM)id);
 520 }
 521
 522 // for compatibility only
 523 wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parent,
 524                                     const wxString& text,
 525                                     int image, int selImage,
 526                                     long insertAfter)
 527 {
 528     return DoInsertItem(parent, (WXHTREEITEM)insertAfter, text,
 529                         image, selImage, NULL);
 530 }
 531
 532 wxTreeItemId wxTreeCtrl::AddRoot(const wxString& text,
 533                                  int image, int selectedImage,
 534                                  wxTreeItemData *data)
 535 {
 536     return DoInsertItem(wxTreeItemId((WXHTREEITEM) 0), (WXHTREEITEM) 0,
 537                         text, image, selectedImage, data);
 538 }
 539
 540 wxTreeItemId wxTreeCtrl::PrependItem(const wxTreeItemId& parent,
 541                                      const wxString& text,
 542                                      int image, int selectedImage,
 543                                      wxTreeItemData *data)
 544 {
 545     return DoInsertItem(parent, (WXHTREEITEM) TVI_FIRST,
 546                         text, image, selectedImage, data);
 547 }
 548
 549 wxTreeItemId wxTreeCtrl::InsertItem(const wxTreeItemId& parent,
 550                                     const wxTreeItemId& idPrevious,
 551                                     const wxString& text,
 552                                     int image, int selectedImage,
 553                                     wxTreeItemData *data)
 554 {
 555     return DoInsertItem(parent, idPrevious, text, image, selectedImage, data);
 556 }
 557
 558 wxTreeItemId wxTreeCtrl::AppendItem(const wxTreeItemId& parent,
 559                                     const wxString& text,
 560                                     int image, int selectedImage,
 561                                     wxTreeItemData *data)
 562 {
 563     return DoInsertItem(parent, (WXHTREEITEM) TVI_LAST,
 564                         text, image, selectedImage, data);
 565 }
 566
 567 void wxTreeCtrl::Delete(const wxTreeItemId& item)
 568 {
 569     if ( !TreeView_DeleteItem(wxhWnd, (HTREEITEM)(WXHTREEITEM)item) )
 570     {
 571         wxLogLastError("TreeView_DeleteItem");
 572     }
 573 }
 574
 575 void wxTreeCtrl::DeleteAllItems()
 576 {
 577     if ( !TreeView_DeleteAllItems(wxhWnd) )
 578     {
 579         wxLogLastError("TreeView_DeleteAllItems");
 580     }
 581 }
 582
 583 void wxTreeCtrl::DoExpand(const wxTreeItemId& item, int flag)
 584 {
 585     wxASSERT_MSG( flag == TVE_COLLAPSE || flag == TVE_COLLAPSERESET ||
 586                   flag == TVE_EXPAND   || flag == TVE_TOGGLE,
 587                   "Unknown flag in wxTreeCtrl::DoExpand" );
 588
 589     // TreeView_Expand doesn't send TVN_ITEMEXPAND(ING) messages, so we must
 590     // emulate them
 591     if ( TreeView_Expand(wxhWnd, (HTREEITEM) (WXHTREEITEM) item, flag) != 0 )
 592     {
 593         wxTreeEvent event(wxEVT_NULL, m_windowId);
 594         event.m_item = item;
 595
 596         bool isExpanded = IsExpanded(item);
 597
 598         event.SetEventObject(this);
 599
 600         // @@@ return values of {EXPAND|COLLAPS}ING event handler is discarded
 601         event.SetEventType(g_events[isExpanded][TRUE]);
 602         GetEventHandler()->ProcessEvent(event);
 603
 604         event.SetEventType(g_events[isExpanded][FALSE]);
 605         GetEventHandler()->ProcessEvent(event);
 606     }
 607     else
 608     {
 609         // I wonder if it really ever happens...
 610         wxLogDebug("TreeView_Expand: change didn't took place.");
 611     }
 612 }
 613
 614 void wxTreeCtrl::Expand(const wxTreeItemId& item)
 615 {
 616     DoExpand(item, TVE_EXPAND);
 617 }
 618
 619 void wxTreeCtrl::Collapse(const wxTreeItemId& item)
 620 {
 621     DoExpand(item, TVE_COLLAPSE);
 622 }
 623
 624 void wxTreeCtrl::CollapseAndReset(const wxTreeItemId& item)
 625 {
 626     DoExpand(item, TVE_COLLAPSERESET);
 627 }
 628
 629 void wxTreeCtrl::Toggle(const wxTreeItemId& item)
 630 {
 631     DoExpand(item, TVE_TOGGLE);
 632 }
 633
 634 void wxTreeCtrl::ExpandItem(const wxTreeItemId& item, int action)
 635 {
 636         DoExpand(item, action);
 637 }
 638
 639 void wxTreeCtrl::Unselect()
 640 {
 641     SelectItem(wxTreeItemId((WXHTREEITEM) 0));
 642 }
 643
 644 void wxTreeCtrl::SelectItem(const wxTreeItemId& item)
 645 {
 646     if ( !TreeView_SelectItem(wxhWnd, (HTREEITEM) (WXHTREEITEM) item) )
 647     {
 648         wxLogLastError("TreeView_SelectItem");
 649     }
 650 }
 651
 652 void wxTreeCtrl::EnsureVisible(const wxTreeItemId& item)
 653 {
 654     // no error return
 655     TreeView_EnsureVisible(wxhWnd, (HTREEITEM) (WXHTREEITEM) item);
 656 }
 657
 658 void wxTreeCtrl::ScrollTo(const wxTreeItemId& item)
 659 {
 660     if ( !TreeView_SelectSetFirstVisible(wxhWnd, (HTREEITEM) (WXHTREEITEM) item) )
 661     {
 662         wxLogLastError("TreeView_SelectSetFirstVisible");
 663     }
 664 }
 665
 666 wxTextCtrl* wxTreeCtrl::GetEditControl() const
 667 {
 668     return m_textCtrl;
 669 }
 670
 671 void wxTreeCtrl::DeleteTextCtrl()
 672 {
 673     if ( m_textCtrl )
 674     {
 675         m_textCtrl->UnsubclassWin();
 676         m_textCtrl->SetHWND(0);
 677         delete m_textCtrl;
 678         m_textCtrl = NULL;
 679     }
 680 }
 681
 682 wxTextCtrl* wxTreeCtrl::EditLabel(const wxTreeItemId& item,
 683                                   wxClassInfo* textControlClass)
 684 {
 685     wxASSERT( textControlClass->IsKindOf(CLASSINFO(wxTextCtrl)) );
 686
 687     HWND hWnd = (HWND) TreeView_EditLabel(wxhWnd, (HTREEITEM) (WXHTREEITEM) item);
 688
 689     wxCHECK_MSG( hWnd, NULL, "Can't edit tree ctrl label" );
 690
 691     DeleteTextCtrl();
 692
 693     m_textCtrl = (wxTextCtrl *)textControlClass->CreateObject();
 694     m_textCtrl->SetHWND((WXHWND)hWnd);
 695     m_textCtrl->SubclassWin((WXHWND)hWnd);
 696
 697     return m_textCtrl;
 698 }
 699
 700 // End label editing, optionally cancelling the edit
 701 void wxTreeCtrl::EndEditLabel(const wxTreeItemId& item, bool discardChanges)
 702 {
 703     TreeView_EndEditLabelNow(wxhWnd, discardChanges);
 704
 705     DeleteTextCtrl();
 706 }
 707
 708 wxTreeItemId wxTreeCtrl::HitTest(const wxPoint& point, int& flags)
 709 {
 710     TV_HITTESTINFO hitTestInfo;
 711     hitTestInfo.pt.x = (int)point.x;
 712     hitTestInfo.pt.y = (int)point.y;
 713
 714     TreeView_HitTest(wxhWnd, &hitTestInfo);
 715
 716     flags = 0;
 717
 718     // avoid repetition
 719     #define TRANSLATE_FLAG(flag) if ( hitTestInfo.flags & TVHT_##flag ) \
 720                                     flags |= wxTREE_HITTEST_##flag
 721
 722     TRANSLATE_FLAG(ABOVE);
 723     TRANSLATE_FLAG(BELOW);
 724     TRANSLATE_FLAG(NOWHERE);
 725     TRANSLATE_FLAG(ONITEMBUTTON);
 726     TRANSLATE_FLAG(ONITEMICON);
 727     TRANSLATE_FLAG(ONITEMINDENT);
 728     TRANSLATE_FLAG(ONITEMLABEL);
 729     TRANSLATE_FLAG(ONITEMRIGHT);
 730     TRANSLATE_FLAG(ONITEMSTATEICON);
 731     TRANSLATE_FLAG(TOLEFT);
 732     TRANSLATE_FLAG(TORIGHT);
 733
 734     #undef TRANSLATE_FLAG
 735
 736     return wxTreeItemId((WXHTREEITEM) hitTestInfo.hItem);
 737 }
 738
 739 void wxTreeCtrl::SortChildren(const wxTreeItemId& item,
 740                               wxTreeItemCmpFunc *cmpFunction)
 741 {
 742     if ( cmpFunction == NULL )
 743     {
 744         TreeView_SortChildren(wxhWnd, (HTREEITEM) (WXHTREEITEM) item, 0);
 745     }
 746     else
 747     {
 748         // TODO: use TreeView_SortChildrenCB
 749         wxFAIL_MSG("wxTreeCtrl::SortChildren not implemented");
 750     }
 751 }
 752
 753 // TODO
 754 size_t wxTreeCtrl::GetChildrenCount(const wxTreeItemId& item, bool recursively)
 755 {
 756     return 0;
 757 }
 758
 759 // ----------------------------------------------------------------------------
 760 // implementation
 761 // ----------------------------------------------------------------------------
 762
 763 bool wxTreeCtrl::MSWCommand(WXUINT cmd, WXWORD id)
 764 {
 765     if ( cmd == EN_UPDATE )
 766     {
 767         wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, id);
 768         event.SetEventObject( this );
 769         ProcessCommand(event);
 770     }
 771     else if ( cmd == EN_KILLFOCUS )
 772     {
 773         wxCommandEvent event(wxEVT_KILL_FOCUS, id);
 774         event.SetEventObject( this );
 775         ProcessCommand(event);
 776     }
 777     else
 778     {
 779         // nothing done
 780         return FALSE;
 781     }
 782
 783     // command processed
 784     return TRUE;
 785 }
 786
 787 // process WM_NOTIFY Windows message
 788 bool wxTreeCtrl::MSWNotify(WXWPARAM wParam, WXLPARAM lParam, WXLPARAM *result)
 789 {
 790     wxTreeEvent event(wxEVT_NULL, m_windowId);
 791     wxEventType eventType = wxEVT_NULL;
 792     NMHDR *hdr = (NMHDR *)lParam;
 793
 794     switch ( hdr->code )
 795     {
 796         case TVN_BEGINDRAG:
 797             eventType = wxEVT_COMMAND_TREE_BEGIN_DRAG;
 798             // fall through
 799
 800         case TVN_BEGINRDRAG:
 801             {
 802                 if ( eventType == wxEVT_NULL )
 803                     eventType = wxEVT_COMMAND_TREE_BEGIN_RDRAG;
 804                 //else: left drag, already set above
 805
 806                 NM_TREEVIEW *tv = (NM_TREEVIEW *)lParam;
 807
 808                 event.m_item = (WXHTREEITEM) tv->itemNew.hItem;
 809                 event.m_pointDrag = wxPoint(tv->ptDrag.x, tv->ptDrag.y);
 810                 break;
 811             }
 812
 813         case TVN_BEGINLABELEDIT:
 814             {
 815                 eventType = wxEVT_COMMAND_TREE_BEGIN_LABEL_EDIT;
 816                 TV_DISPINFO *info = (TV_DISPINFO *)lParam;
 817
 818                 event.m_item = (WXHTREEITEM) info->item.hItem;
 819                 break;
 820             }
 821
 822         case TVN_DELETEITEM:
 823             {
 824                 eventType = wxEVT_COMMAND_TREE_DELETE_ITEM;
 825                 NM_TREEVIEW *tv = (NM_TREEVIEW *)lParam;
 826
 827                 event.m_item = (WXHTREEITEM) tv->itemOld.hItem;
 828                 break;
 829             }
 830
 831         case TVN_ENDLABELEDIT:
 832             {
 833                 eventType = wxEVT_COMMAND_TREE_END_LABEL_EDIT;
 834                 TV_DISPINFO *info = (TV_DISPINFO *)lParam;
 835
 836                 event.m_item = (WXHTREEITEM) info->item.hItem;
 837                 break;
 838             }
 839
 840         case TVN_GETDISPINFO:
 841             eventType = wxEVT_COMMAND_TREE_GET_INFO;
 842             // fall through
 843
 844         case TVN_SETDISPINFO:
 845             {
 846                 if ( eventType == wxEVT_NULL )
 847                     eventType = wxEVT_COMMAND_TREE_SET_INFO;
 848                 //else: get, already set above
 849
 850                 TV_DISPINFO *info = (TV_DISPINFO *)lParam;
 851
 852                 event.m_item = (WXHTREEITEM) info->item.hItem;
 853                 break;
 854             }
 855
 856         case TVN_ITEMEXPANDING:
 857             event.m_code = FALSE;
 858             // fall through
 859
 860         case TVN_ITEMEXPANDED:
 861             {
 862                 NM_TREEVIEW* tv = (NM_TREEVIEW*)lParam;
 863
 864                 bool expand = FALSE;
 865                 switch ( tv->action )
 866                 {
 867                     case TVE_EXPAND:
 868                         expand = TRUE;
 869                         break;
 870
 871                     case TVE_COLLAPSE:
 872                         expand = FALSE;
 873                         break;
 874
 875                     default:
 876                         wxLogDebug("unexpected code %d in TVN_ITEMEXPAND "
 877                                    "message", tv->action);
 878                 }
 879
 880                 bool ing = (hdr->code == TVN_ITEMEXPANDING);
 881                 eventType = g_events[expand][ing];
 882
 883                 event.m_item = (WXHTREEITEM) tv->itemNew.hItem;
 884                 break;
 885             }
 886
 887         case TVN_KEYDOWN:
 888             {
 889                 eventType = wxEVT_COMMAND_TREE_KEY_DOWN;
 890                 TV_KEYDOWN *info = (TV_KEYDOWN *)lParam;
 891
 892                 event.m_code = wxCharCodeMSWToWX(info->wVKey);
 893                 break;
 894             }
 895
 896         case TVN_SELCHANGED:
 897             eventType = wxEVT_COMMAND_TREE_SEL_CHANGED;
 898             // fall through
 899
 900         case TVN_SELCHANGING:
 901             {
 902                 if ( eventType == wxEVT_NULL )
 903                     eventType = wxEVT_COMMAND_TREE_SEL_CHANGING;
 904                 //else: already set above
 905
 906                 NM_TREEVIEW* tv = (NM_TREEVIEW *)lParam;
 907
 908                 event.m_item = (WXHTREEITEM) tv->itemNew.hItem;
 909                 event.m_itemOld = (WXHTREEITEM) tv->itemOld.hItem;
 910                 break;
 911             }
 912
 913         default:
 914             return wxControl::MSWNotify(wParam, lParam, result);
 915     }
 916
 917     event.SetEventObject(this);
 918     event.SetEventType(eventType);
 919
 920     bool processed = GetEventHandler()->ProcessEvent(event);
 921
 922     // post processing
 923     if ( hdr->code == TVN_DELETEITEM )
 924     {
 925         // NB: we might process this message using wxWindows event tables, but
 926         //     due to overhead of wxWin event system we prefer to do it here
 927         //     (otherwise deleting a tree with many items is just too slow)
 928         NM_TREEVIEW* tv = (NM_TREEVIEW *)lParam;
 929         wxTreeItemData *data = (wxTreeItemData *)tv->itemOld.lParam;
 930         delete data; // may be NULL, ok
 931     }
 932
 933     *result = !event.IsAllowed();
 934
 935     return processed;
 936 }
 937
 938 // ----------------------------------------------------------------------------
 939 // Tree event
 940 // ----------------------------------------------------------------------------
 941
 942 IMPLEMENT_DYNAMIC_CLASS(wxTreeEvent, wxNotifyEvent)
 943
 944 wxTreeEvent::wxTreeEvent(wxEventType commandType, int id)
 945            : wxNotifyEvent(commandType, id)
 946 {
 947     m_code = 0;
 948     m_itemOld = 0;
 949 }
 950
 951 #endif // __WIN95__
 952