src/common/menucmn.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/menucmn.cpp
   3 // Purpose:     wxMenu and wxMenuBar methods common to all ports
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     26.10.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_MENUS
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/intl.h"
  31     #include "wx/log.h"
  32     #include "wx/menu.h"
  33     #include "wx/frame.h"
  34 #endif
  35
  36 #include "wx/stockitem.h"
  37
  38 // ----------------------------------------------------------------------------
  39 // template lists
  40 // ----------------------------------------------------------------------------
  41
  42 #include "wx/listimpl.cpp"
  43
  44 WX_DEFINE_LIST(wxMenuList)
  45 WX_DEFINE_LIST(wxMenuItemList)
  46
  47 // ============================================================================
  48 // implementation
  49 // ============================================================================
  50
  51 // ----------------------------------------------------------------------------
  52 // wxMenuItemBase
  53 // ----------------------------------------------------------------------------
  54
  55 wxMenuItemBase::wxMenuItemBase(wxMenu *parentMenu,
  56                                int id,
  57                                const wxString& text,
  58                                const wxString& help,
  59                                wxItemKind kind,
  60                                wxMenu *subMenu)
  61 {
  62     // notice that parentMenu can be NULL: the item can be attached to the menu
  63     // later with SetMenu()
  64
  65     m_parentMenu  = parentMenu;
  66     m_subMenu     = subMenu;
  67     m_isEnabled   = true;
  68     m_isChecked   = false;
  69     m_id          = id;
  70     m_kind        = kind;
  71     if (m_id == wxID_ANY)
  72         m_id = wxWindow::NewControlId();
  73     if (m_id == wxID_SEPARATOR)
  74         m_kind = wxITEM_SEPARATOR;
  75
  76     SetItemLabel(text);
  77     SetHelp(help);
  78 }
  79
  80 wxMenuItemBase::~wxMenuItemBase()
  81 {
  82     delete m_subMenu;
  83 }
  84
  85 #if wxUSE_ACCEL
  86
  87 wxAcceleratorEntry *wxMenuItemBase::GetAccel() const
  88 {
  89     return wxAcceleratorEntry::Create(GetItemLabel());
  90 }
  91
  92 void wxMenuItemBase::SetAccel(wxAcceleratorEntry *accel)
  93 {
  94     wxString text = m_text.BeforeFirst(wxT('\t'));
  95     if ( accel )
  96     {
  97         text += wxT('\t');
  98         text += accel->ToString();
  99     }
 100
 101     SetItemLabel(text);
 102 }
 103
 104 #endif // wxUSE_ACCEL
 105
 106 void wxMenuItemBase::SetItemLabel(const wxString& str)
 107 {
 108     m_text = str;
 109
 110     if ( m_text.empty() && !IsSeparator() )
 111     {
 112         wxASSERT_MSG( wxIsStockID(GetId()),
 113                       wxT("A non-stock menu item with an empty label?") );
 114         m_text = wxGetStockLabel(GetId(), wxSTOCK_WITH_ACCELERATOR |
 115                                           wxSTOCK_WITH_MNEMONIC);
 116     }
 117 }
 118
 119 void wxMenuItemBase::SetHelp(const wxString& str)
 120 {
 121     m_help = str;
 122
 123     if ( m_help.empty() && !IsSeparator() && wxIsStockID(GetId()) )
 124     {
 125         // get a stock help string
 126         m_help = wxGetStockHelpString(GetId());
 127     }
 128 }
 129
 130 #ifndef __WXPM__
 131 wxString wxMenuItemBase::GetLabelText(const wxString& text)
 132 {
 133     return wxStripMenuCodes(text);
 134 }
 135 #endif
 136
 137 #if WXWIN_COMPATIBILITY_2_8
 138 wxString wxMenuItemBase::GetLabelFromText(const wxString& text)
 139 {
 140     return GetLabelText(text);
 141 }
 142 #endif
 143
 144 bool wxMenuBase::ms_locked = true;
 145
 146 // ----------------------------------------------------------------------------
 147 // wxMenu ctor and dtor
 148 // ----------------------------------------------------------------------------
 149
 150 void wxMenuBase::Init(long style)
 151 {
 152     m_menuBar = NULL;
 153     m_menuParent = NULL;
 154
 155     m_invokingWindow = NULL;
 156     m_style = style;
 157     m_clientData = NULL;
 158     m_eventHandler = this;
 159 }
 160
 161 wxMenuBase::~wxMenuBase()
 162 {
 163     WX_CLEAR_LIST(wxMenuItemList, m_items);
 164 }
 165
 166 // ----------------------------------------------------------------------------
 167 // wxMenu item adding/removing
 168 // ----------------------------------------------------------------------------
 169
 170 void wxMenuBase::AddSubMenu(wxMenu *submenu)
 171 {
 172     wxCHECK_RET( submenu, wxT("can't add a NULL submenu") );
 173
 174     submenu->SetParent((wxMenu *)this);
 175 }
 176
 177 wxMenuItem* wxMenuBase::DoAppend(wxMenuItem *item)
 178 {
 179     wxCHECK_MSG( item, NULL, wxT("invalid item in wxMenu::Append()") );
 180
 181     m_items.Append(item);
 182     item->SetMenu((wxMenu*)this);
 183     if ( item->IsSubMenu() )
 184     {
 185         AddSubMenu(item->GetSubMenu());
 186     }
 187
 188     return item;
 189 }
 190
 191 wxMenuItem* wxMenuBase::Insert(size_t pos, wxMenuItem *item)
 192 {
 193     wxCHECK_MSG( item, NULL, wxT("invalid item in wxMenu::Insert") );
 194
 195     if ( pos == GetMenuItemCount() )
 196     {
 197         return DoAppend(item);
 198     }
 199     else
 200     {
 201         wxCHECK_MSG( pos < GetMenuItemCount(), NULL,
 202                      wxT("invalid index in wxMenu::Insert") );
 203
 204         return DoInsert(pos, item);
 205     }
 206 }
 207
 208 wxMenuItem* wxMenuBase::DoInsert(size_t pos, wxMenuItem *item)
 209 {
 210     wxCHECK_MSG( item, NULL, wxT("invalid item in wxMenu::Insert()") );
 211
 212     wxMenuItemList::compatibility_iterator node = m_items.Item(pos);
 213     wxCHECK_MSG( node, NULL, wxT("invalid index in wxMenu::Insert()") );
 214
 215     m_items.Insert(node, item);
 216     item->SetMenu((wxMenu*)this);
 217     if ( item->IsSubMenu() )
 218     {
 219         AddSubMenu(item->GetSubMenu());
 220     }
 221
 222     return item;
 223 }
 224
 225 wxMenuItem *wxMenuBase::Remove(wxMenuItem *item)
 226 {
 227     wxCHECK_MSG( item, NULL, wxT("invalid item in wxMenu::Remove") );
 228
 229     return DoRemove(item);
 230 }
 231
 232 wxMenuItem *wxMenuBase::DoRemove(wxMenuItem *item)
 233 {
 234     wxMenuItemList::compatibility_iterator node = m_items.Find(item);
 235
 236     // if we get here, the item is valid or one of Remove() functions is broken
 237     wxCHECK_MSG( node, NULL, wxT("bug in wxMenu::Remove logic") );
 238
 239     // we detach the item, but we do delete the list node (i.e. don't call
 240     // DetachNode() here!)
 241     m_items.Erase(node);
 242
 243     // item isn't attached to anything any more
 244     item->SetMenu(NULL);
 245     wxMenu *submenu = item->GetSubMenu();
 246     if ( submenu )
 247     {
 248         submenu->SetParent(NULL);
 249         if ( submenu->IsAttached() )
 250             submenu->Detach();
 251     }
 252
 253     return item;
 254 }
 255
 256 bool wxMenuBase::Delete(wxMenuItem *item)
 257 {
 258     wxCHECK_MSG( item, false, wxT("invalid item in wxMenu::Delete") );
 259
 260     return DoDelete(item);
 261 }
 262
 263 bool wxMenuBase::DoDelete(wxMenuItem *item)
 264 {
 265     wxMenuItem *item2 = DoRemove(item);
 266     wxCHECK_MSG( item2, false, wxT("failed to delete menu item") );
 267
 268     // don't delete the submenu
 269     item2->SetSubMenu(NULL);
 270
 271     delete item2;
 272
 273     return true;
 274 }
 275
 276 bool wxMenuBase::Destroy(wxMenuItem *item)
 277 {
 278     wxCHECK_MSG( item, false, wxT("invalid item in wxMenu::Destroy") );
 279
 280     return DoDestroy(item);
 281 }
 282
 283 bool wxMenuBase::DoDestroy(wxMenuItem *item)
 284 {
 285     wxMenuItem *item2 = DoRemove(item);
 286     wxCHECK_MSG( item2, false, wxT("failed to delete menu item") );
 287
 288     delete item2;
 289
 290     return true;
 291 }
 292
 293 // ----------------------------------------------------------------------------
 294 // wxMenu searching for items
 295 // ----------------------------------------------------------------------------
 296
 297 // Finds the item id matching the given string, wxNOT_FOUND if not found.
 298 int wxMenuBase::FindItem(const wxString& text) const
 299 {
 300     wxString label = wxMenuItem::GetLabelText(text);
 301     for ( wxMenuItemList::compatibility_iterator node = m_items.GetFirst();
 302           node;
 303           node = node->GetNext() )
 304     {
 305         wxMenuItem *item = node->GetData();
 306         if ( item->IsSubMenu() )
 307         {
 308             int rc = item->GetSubMenu()->FindItem(label);
 309             if ( rc != wxNOT_FOUND )
 310                 return rc;
 311         }
 312
 313         // we execute this code for submenus as well to alllow finding them by
 314         // name just like the ordinary items
 315         if ( !item->IsSeparator() )
 316         {
 317             if ( item->GetItemLabelText() == label )
 318                 return item->GetId();
 319         }
 320     }
 321
 322     return wxNOT_FOUND;
 323 }
 324
 325 // recursive search for item by id
 326 wxMenuItem *wxMenuBase::FindItem(int itemId, wxMenu **itemMenu) const
 327 {
 328     if ( itemMenu )
 329         *itemMenu = NULL;
 330
 331     wxMenuItem *item = NULL;
 332     for ( wxMenuItemList::compatibility_iterator node = m_items.GetFirst();
 333           node && !item;
 334           node = node->GetNext() )
 335     {
 336         item = node->GetData();
 337
 338         if ( item->GetId() == itemId )
 339         {
 340             if ( itemMenu )
 341                 *itemMenu = (wxMenu *)this;
 342         }
 343         else if ( item->IsSubMenu() )
 344         {
 345             item = item->GetSubMenu()->FindItem(itemId, itemMenu);
 346         }
 347         else
 348         {
 349             // don't exit the loop
 350             item = NULL;
 351         }
 352     }
 353
 354     return item;
 355 }
 356
 357 // non recursive search
 358 wxMenuItem *wxMenuBase::FindChildItem(int id, size_t *ppos) const
 359 {
 360     wxMenuItem *item = NULL;
 361     wxMenuItemList::compatibility_iterator node = GetMenuItems().GetFirst();
 362
 363     size_t pos;
 364     for ( pos = 0; node; pos++ )
 365     {
 366         if ( node->GetData()->GetId() == id )
 367         {
 368             item = node->GetData();
 369
 370             break;
 371         }
 372
 373         node = node->GetNext();
 374     }
 375
 376     if ( ppos )
 377     {
 378         *ppos = item ? pos : (size_t)wxNOT_FOUND;
 379     }
 380
 381     return item;
 382 }
 383
 384 // find by position
 385 wxMenuItem* wxMenuBase::FindItemByPosition(size_t position) const
 386 {
 387     wxCHECK_MSG( position < m_items.GetCount(), NULL,
 388                  wxT("wxMenu::FindItemByPosition(): invalid menu index") );
 389
 390     return m_items.Item( position )->GetData();
 391 }
 392
 393 // ----------------------------------------------------------------------------
 394 // wxMenu helpers used by derived classes
 395 // ----------------------------------------------------------------------------
 396
 397 // Update a menu and all submenus recursively. source is the object that has
 398 // the update event handlers defined for it. If NULL, the menu or associated
 399 // window will be used.
 400 void wxMenuBase::UpdateUI(wxEvtHandler* source)
 401 {
 402     if (GetInvokingWindow())
 403     {
 404         // Don't update menus if the parent
 405         // frame is about to get deleted
 406         wxWindow *tlw = wxGetTopLevelParent( GetInvokingWindow() );
 407         if (tlw && wxPendingDelete.Member(tlw))
 408             return;
 409     }
 410
 411     if ( !source && GetInvokingWindow() )
 412         source = GetInvokingWindow()->GetEventHandler();
 413     if ( !source )
 414         source = GetEventHandler();
 415     if ( !source )
 416         source = this;
 417
 418     wxMenuItemList::compatibility_iterator  node = GetMenuItems().GetFirst();
 419     while ( node )
 420     {
 421         wxMenuItem* item = node->GetData();
 422         if ( !item->IsSeparator() )
 423         {
 424             wxWindowID id = item->GetId();
 425             wxUpdateUIEvent event(id);
 426             event.SetEventObject( source );
 427
 428             if ( source->ProcessEvent(event) )
 429             {
 430                 // if anything changed, update the changed attribute
 431                 if (event.GetSetText())
 432                     SetLabel(id, event.GetText());
 433                 if (event.GetSetChecked())
 434                     Check(id, event.GetChecked());
 435                 if (event.GetSetEnabled())
 436                     Enable(id, event.GetEnabled());
 437             }
 438
 439             // recurse to the submenus
 440             if ( item->GetSubMenu() )
 441                 item->GetSubMenu()->UpdateUI(source);
 442         }
 443         //else: item is a separator (which doesn't process update UI events)
 444
 445         node = node->GetNext();
 446     }
 447 }
 448
 449 bool wxMenuBase::SendEvent(int id, int checked)
 450 {
 451     wxCommandEvent event(wxEVT_COMMAND_MENU_SELECTED, id);
 452     event.SetEventObject(this);
 453     event.SetInt(checked);
 454
 455     bool processed = false;
 456
 457     // Try the menu's event handler first
 458     wxEvtHandler *handler = GetEventHandler();
 459     if ( handler )
 460         processed = handler->SafelyProcessEvent(event);
 461
 462     // Try the window the menu was popped up from or its menu bar belongs to
 463     if ( !processed )
 464     {
 465         wxWindow * const win = GetWindow();
 466         if ( win )
 467             processed = win->HandleWindowEvent(event);
 468     }
 469
 470     return processed;
 471 }
 472
 473 // ----------------------------------------------------------------------------
 474 // wxMenu attaching/detaching to/from menu bar
 475 // ----------------------------------------------------------------------------
 476
 477 wxMenuBar* wxMenuBase::GetMenuBar() const
 478 {
 479     if(GetParent())
 480         return GetParent()->GetMenuBar();
 481     return m_menuBar;
 482 }
 483
 484 void wxMenuBase::Attach(wxMenuBarBase *menubar)
 485 {
 486     // use Detach() instead!
 487     wxASSERT_MSG( menubar, wxT("menu can't be attached to NULL menubar") );
 488
 489     // use IsAttached() to prevent this from happening
 490     wxASSERT_MSG( !m_menuBar, wxT("attaching menu twice?") );
 491
 492     m_menuBar = (wxMenuBar *)menubar;
 493 }
 494
 495 void wxMenuBase::Detach()
 496 {
 497     // use IsAttached() to prevent this from happening
 498     wxASSERT_MSG( m_menuBar, wxT("detaching unattached menu?") );
 499
 500     m_menuBar = NULL;
 501 }
 502
 503 // ----------------------------------------------------------------------------
 504 // wxMenu invoking window handling
 505 // ----------------------------------------------------------------------------
 506
 507 void wxMenuBase::SetInvokingWindow(wxWindow *win)
 508 {
 509     wxASSERT_MSG( !GetParent(),
 510                     "should only be called for top level popup menus" );
 511     wxASSERT_MSG( !IsAttached(),
 512                     "menus attached to menu bar can't have invoking window" );
 513
 514     m_invokingWindow = win;
 515 }
 516
 517 wxWindow *wxMenuBase::GetInvokingWindow() const
 518 {
 519     // only the popup menu itself has a non-NULL invoking window so recurse
 520     // upwards until we find it
 521     const wxMenuBase *menu = this;
 522     while ( menu->GetParent() )
 523     {
 524         menu = menu->GetParent();
 525     }
 526
 527     // menu is a top level menu here
 528     return menu->m_invokingWindow;
 529 }
 530
 531 wxWindow *wxMenuBase::GetWindow() const
 532 {
 533     return GetMenuBar() ? GetMenuBar()->GetFrame() : GetInvokingWindow();
 534 }
 535
 536 // ----------------------------------------------------------------------------
 537 // wxMenu functions forwarded to wxMenuItem
 538 // ----------------------------------------------------------------------------
 539
 540 void wxMenuBase::Enable( int id, bool enable )
 541 {
 542     wxMenuItem *item = FindItem(id);
 543
 544     wxCHECK_RET( item, wxT("wxMenu::Enable: no such item") );
 545
 546     item->Enable(enable);
 547 }
 548
 549 bool wxMenuBase::IsEnabled( int id ) const
 550 {
 551     wxMenuItem *item = FindItem(id);
 552
 553     wxCHECK_MSG( item, false, wxT("wxMenu::IsEnabled: no such item") );
 554
 555     return item->IsEnabled();
 556 }
 557
 558 void wxMenuBase::Check( int id, bool enable )
 559 {
 560     wxMenuItem *item = FindItem(id);
 561
 562     wxCHECK_RET( item, wxT("wxMenu::Check: no such item") );
 563
 564     item->Check(enable);
 565 }
 566
 567 bool wxMenuBase::IsChecked( int id ) const
 568 {
 569     wxMenuItem *item = FindItem(id);
 570
 571     wxCHECK_MSG( item, false, wxT("wxMenu::IsChecked: no such item") );
 572
 573     return item->IsChecked();
 574 }
 575
 576 void wxMenuBase::SetLabel( int id, const wxString &label )
 577 {
 578     wxMenuItem *item = FindItem(id);
 579
 580     wxCHECK_RET( item, wxT("wxMenu::SetLabel: no such item") );
 581
 582     item->SetItemLabel(label);
 583 }
 584
 585 wxString wxMenuBase::GetLabel( int id ) const
 586 {
 587     wxMenuItem *item = FindItem(id);
 588
 589     wxCHECK_MSG( item, wxEmptyString, wxT("wxMenu::GetLabel: no such item") );
 590
 591     return item->GetItemLabel();
 592 }
 593
 594 void wxMenuBase::SetHelpString( int id, const wxString& helpString )
 595 {
 596     wxMenuItem *item = FindItem(id);
 597
 598     wxCHECK_RET( item, wxT("wxMenu::SetHelpString: no such item") );
 599
 600     item->SetHelp( helpString );
 601 }
 602
 603 wxString wxMenuBase::GetHelpString( int id ) const
 604 {
 605     wxMenuItem *item = FindItem(id);
 606
 607     wxCHECK_MSG( item, wxEmptyString, wxT("wxMenu::GetHelpString: no such item") );
 608
 609     return item->GetHelp();
 610 }
 611
 612 // ----------------------------------------------------------------------------
 613 // wxMenuBarBase ctor and dtor
 614 // ----------------------------------------------------------------------------
 615
 616 wxMenuBarBase::wxMenuBarBase()
 617 {
 618     // not attached yet
 619     m_menuBarFrame = NULL;
 620 }
 621
 622 wxMenuBarBase::~wxMenuBarBase()
 623 {
 624     WX_CLEAR_LIST(wxMenuList, m_menus);
 625 }
 626
 627 // ----------------------------------------------------------------------------
 628 // wxMenuBar item access: the base class versions manage m_menus list, the
 629 // derived class should reflect the changes in the real menubar
 630 // ----------------------------------------------------------------------------
 631
 632 wxMenu *wxMenuBarBase::GetMenu(size_t pos) const
 633 {
 634     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 635     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::GetMenu()") );
 636
 637     return node->GetData();
 638 }
 639
 640 bool wxMenuBarBase::Append(wxMenu *menu, const wxString& title)
 641 {
 642     wxCHECK_MSG( menu, false, wxT("can't append NULL menu") );
 643     wxCHECK_MSG( !title.empty(), false, wxT("can't append menu with empty title") );
 644
 645     m_menus.Append(menu);
 646     menu->Attach(this);
 647
 648     return true;
 649 }
 650
 651 bool wxMenuBarBase::Insert(size_t pos, wxMenu *menu,
 652                            const wxString& title)
 653 {
 654     if ( pos == m_menus.GetCount() )
 655     {
 656         return wxMenuBarBase::Append(menu, title);
 657     }
 658     else // not at the end
 659     {
 660         wxCHECK_MSG( menu, false, wxT("can't insert NULL menu") );
 661
 662         wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 663         wxCHECK_MSG( node, false, wxT("bad index in wxMenuBar::Insert()") );
 664
 665         m_menus.Insert(node, menu);
 666         menu->Attach(this);
 667
 668         return true;
 669     }
 670 }
 671
 672 wxMenu *wxMenuBarBase::Replace(size_t pos, wxMenu *menu,
 673                                const wxString& WXUNUSED(title))
 674 {
 675     wxCHECK_MSG( menu, NULL, wxT("can't insert NULL menu") );
 676
 677     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 678     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::Replace()") );
 679
 680     wxMenu *menuOld = node->GetData();
 681     node->SetData(menu);
 682
 683     menu->Attach(this);
 684     menuOld->Detach();
 685
 686     return menuOld;
 687 }
 688
 689 wxMenu *wxMenuBarBase::Remove(size_t pos)
 690 {
 691     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 692     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::Remove()") );
 693
 694     wxMenu *menu = node->GetData();
 695     m_menus.Erase(node);
 696     menu->Detach();
 697
 698     return menu;
 699 }
 700
 701 int wxMenuBarBase::FindMenu(const wxString& title) const
 702 {
 703     wxString label = wxMenuItem::GetLabelText(title);
 704
 705     size_t count = GetMenuCount();
 706     for ( size_t i = 0; i < count; i++ )
 707     {
 708         wxString title2 = GetMenuLabel(i);
 709         if ( (title2 == title) ||
 710              (wxMenuItem::GetLabelText(title2) == label) )
 711         {
 712             // found
 713             return (int)i;
 714         }
 715     }
 716
 717     return wxNOT_FOUND;
 718
 719 }
 720
 721 // ----------------------------------------------------------------------------
 722 // wxMenuBar attaching/detaching to/from the frame
 723 // ----------------------------------------------------------------------------
 724
 725 void wxMenuBarBase::Attach(wxFrame *frame)
 726 {
 727     wxASSERT_MSG( !IsAttached(), wxT("menubar already attached!") );
 728
 729     m_menuBarFrame = frame;
 730 }
 731
 732 void wxMenuBarBase::Detach()
 733 {
 734     wxASSERT_MSG( IsAttached(), wxT("detaching unattached menubar") );
 735
 736     m_menuBarFrame = NULL;
 737 }
 738
 739 // ----------------------------------------------------------------------------
 740 // wxMenuBar searching for items
 741 // ----------------------------------------------------------------------------
 742
 743 wxMenuItem *wxMenuBarBase::FindItem(int id, wxMenu **menu) const
 744 {
 745     if ( menu )
 746         *menu = NULL;
 747
 748     wxMenuItem *item = NULL;
 749     size_t count = GetMenuCount(), i;
 750     wxMenuList::const_iterator it;
 751     for ( i = 0, it = m_menus.begin(); !item && (i < count); i++, it++ )
 752     {
 753         item = (*it)->FindItem(id, menu);
 754     }
 755
 756     return item;
 757 }
 758
 759 int wxMenuBarBase::FindMenuItem(const wxString& menu, const wxString& item) const
 760 {
 761     wxString label = wxMenuItem::GetLabelText(menu);
 762
 763     int i = 0;
 764     wxMenuList::compatibility_iterator node;
 765     for ( node = m_menus.GetFirst(); node; node = node->GetNext(), i++ )
 766     {
 767         if ( label == wxMenuItem::GetLabelText(GetMenuLabel(i)) )
 768             return node->GetData()->FindItem(item);
 769     }
 770
 771     return wxNOT_FOUND;
 772 }
 773
 774 // ---------------------------------------------------------------------------
 775 // wxMenuBar functions forwarded to wxMenuItem
 776 // ---------------------------------------------------------------------------
 777
 778 void wxMenuBarBase::Enable(int id, bool enable)
 779 {
 780     wxMenuItem *item = FindItem(id);
 781
 782     wxCHECK_RET( item, wxT("attempt to enable an item which doesn't exist") );
 783
 784     item->Enable(enable);
 785 }
 786
 787 void wxMenuBarBase::Check(int id, bool check)
 788 {
 789     wxMenuItem *item = FindItem(id);
 790
 791     wxCHECK_RET( item, wxT("attempt to check an item which doesn't exist") );
 792     wxCHECK_RET( item->IsCheckable(), wxT("attempt to check an uncheckable item") );
 793
 794     item->Check(check);
 795 }
 796
 797 bool wxMenuBarBase::IsChecked(int id) const
 798 {
 799     wxMenuItem *item = FindItem(id);
 800
 801     wxCHECK_MSG( item, false, wxT("wxMenuBar::IsChecked(): no such item") );
 802
 803     return item->IsChecked();
 804 }
 805
 806 bool wxMenuBarBase::IsEnabled(int id) const
 807 {
 808     wxMenuItem *item = FindItem(id);
 809
 810     wxCHECK_MSG( item, false, wxT("wxMenuBar::IsEnabled(): no such item") );
 811
 812     return item->IsEnabled();
 813 }
 814
 815 void wxMenuBarBase::SetLabel(int id, const wxString& label)
 816 {
 817     wxMenuItem *item = FindItem(id);
 818
 819     wxCHECK_RET( item, wxT("wxMenuBar::SetLabel(): no such item") );
 820
 821     item->SetItemLabel(label);
 822 }
 823
 824 wxString wxMenuBarBase::GetLabel(int id) const
 825 {
 826     wxMenuItem *item = FindItem(id);
 827
 828     wxCHECK_MSG( item, wxEmptyString,
 829                  wxT("wxMenuBar::GetLabel(): no such item") );
 830
 831     return item->GetItemLabel();
 832 }
 833
 834 void wxMenuBarBase::SetHelpString(int id, const wxString& helpString)
 835 {
 836     wxMenuItem *item = FindItem(id);
 837
 838     wxCHECK_RET( item, wxT("wxMenuBar::SetHelpString(): no such item") );
 839
 840     item->SetHelp(helpString);
 841 }
 842
 843 wxString wxMenuBarBase::GetHelpString(int id) const
 844 {
 845     wxMenuItem *item = FindItem(id);
 846
 847     wxCHECK_MSG( item, wxEmptyString,
 848                  wxT("wxMenuBar::GetHelpString(): no such item") );
 849
 850     return item->GetHelp();
 851 }
 852
 853 void wxMenuBarBase::UpdateMenus()
 854 {
 855     wxEvtHandler* source;
 856     wxMenu* menu;
 857     int nCount = GetMenuCount();
 858     for (int n = 0; n < nCount; n++)
 859     {
 860         menu = GetMenu( n );
 861         if (menu != NULL)
 862         {
 863             source = menu->GetEventHandler();
 864             if (source != NULL)
 865                 menu->UpdateUI( source );
 866         }
 867     }
 868 }
 869
 870 #if WXWIN_COMPATIBILITY_2_8
 871 // get or change the label of the menu at given position
 872 void wxMenuBarBase::SetLabelTop(size_t pos, const wxString& label)
 873 {
 874     SetMenuLabel(pos, label);
 875 }
 876
 877 wxString wxMenuBarBase::GetLabelTop(size_t pos) const
 878 {
 879     return GetMenuLabelText(pos);
 880 }
 881 #endif
 882
 883 #endif // wxUSE_MENUS