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::GetWindow() const
 518 {
 519     // only the top level menus have non-NULL invoking window or a pointer to
 520     // the menu bar so recurse upwards until we find it
 521     const wxMenuBase *menu = this;
 522     while ( menu->GetParent() )
 523     {
 524         menu = menu->GetParent();
 525     }
 526
 527     return menu->GetMenuBar() ? menu->GetMenuBar()->GetFrame()
 528                               : menu->GetInvokingWindow();
 529 }
 530
 531 // ----------------------------------------------------------------------------
 532 // wxMenu functions forwarded to wxMenuItem
 533 // ----------------------------------------------------------------------------
 534
 535 void wxMenuBase::Enable( int id, bool enable )
 536 {
 537     wxMenuItem *item = FindItem(id);
 538
 539     wxCHECK_RET( item, wxT("wxMenu::Enable: no such item") );
 540
 541     item->Enable(enable);
 542 }
 543
 544 bool wxMenuBase::IsEnabled( int id ) const
 545 {
 546     wxMenuItem *item = FindItem(id);
 547
 548     wxCHECK_MSG( item, false, wxT("wxMenu::IsEnabled: no such item") );
 549
 550     return item->IsEnabled();
 551 }
 552
 553 void wxMenuBase::Check( int id, bool enable )
 554 {
 555     wxMenuItem *item = FindItem(id);
 556
 557     wxCHECK_RET( item, wxT("wxMenu::Check: no such item") );
 558
 559     item->Check(enable);
 560 }
 561
 562 bool wxMenuBase::IsChecked( int id ) const
 563 {
 564     wxMenuItem *item = FindItem(id);
 565
 566     wxCHECK_MSG( item, false, wxT("wxMenu::IsChecked: no such item") );
 567
 568     return item->IsChecked();
 569 }
 570
 571 void wxMenuBase::SetLabel( int id, const wxString &label )
 572 {
 573     wxMenuItem *item = FindItem(id);
 574
 575     wxCHECK_RET( item, wxT("wxMenu::SetLabel: no such item") );
 576
 577     item->SetItemLabel(label);
 578 }
 579
 580 wxString wxMenuBase::GetLabel( int id ) const
 581 {
 582     wxMenuItem *item = FindItem(id);
 583
 584     wxCHECK_MSG( item, wxEmptyString, wxT("wxMenu::GetLabel: no such item") );
 585
 586     return item->GetItemLabel();
 587 }
 588
 589 void wxMenuBase::SetHelpString( int id, const wxString& helpString )
 590 {
 591     wxMenuItem *item = FindItem(id);
 592
 593     wxCHECK_RET( item, wxT("wxMenu::SetHelpString: no such item") );
 594
 595     item->SetHelp( helpString );
 596 }
 597
 598 wxString wxMenuBase::GetHelpString( int id ) const
 599 {
 600     wxMenuItem *item = FindItem(id);
 601
 602     wxCHECK_MSG( item, wxEmptyString, wxT("wxMenu::GetHelpString: no such item") );
 603
 604     return item->GetHelp();
 605 }
 606
 607 // ----------------------------------------------------------------------------
 608 // wxMenuBarBase ctor and dtor
 609 // ----------------------------------------------------------------------------
 610
 611 wxMenuBarBase::wxMenuBarBase()
 612 {
 613     // not attached yet
 614     m_menuBarFrame = NULL;
 615 }
 616
 617 wxMenuBarBase::~wxMenuBarBase()
 618 {
 619     WX_CLEAR_LIST(wxMenuList, m_menus);
 620 }
 621
 622 // ----------------------------------------------------------------------------
 623 // wxMenuBar item access: the base class versions manage m_menus list, the
 624 // derived class should reflect the changes in the real menubar
 625 // ----------------------------------------------------------------------------
 626
 627 wxMenu *wxMenuBarBase::GetMenu(size_t pos) const
 628 {
 629     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 630     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::GetMenu()") );
 631
 632     return node->GetData();
 633 }
 634
 635 bool wxMenuBarBase::Append(wxMenu *menu, const wxString& title)
 636 {
 637     wxCHECK_MSG( menu, false, wxT("can't append NULL menu") );
 638     wxCHECK_MSG( !title.empty(), false, wxT("can't append menu with empty title") );
 639
 640     m_menus.Append(menu);
 641     menu->Attach(this);
 642
 643     return true;
 644 }
 645
 646 bool wxMenuBarBase::Insert(size_t pos, wxMenu *menu,
 647                            const wxString& title)
 648 {
 649     if ( pos == m_menus.GetCount() )
 650     {
 651         return wxMenuBarBase::Append(menu, title);
 652     }
 653     else // not at the end
 654     {
 655         wxCHECK_MSG( menu, false, wxT("can't insert NULL menu") );
 656
 657         wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 658         wxCHECK_MSG( node, false, wxT("bad index in wxMenuBar::Insert()") );
 659
 660         m_menus.Insert(node, menu);
 661         menu->Attach(this);
 662
 663         return true;
 664     }
 665 }
 666
 667 wxMenu *wxMenuBarBase::Replace(size_t pos, wxMenu *menu,
 668                                const wxString& WXUNUSED(title))
 669 {
 670     wxCHECK_MSG( menu, NULL, wxT("can't insert NULL menu") );
 671
 672     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 673     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::Replace()") );
 674
 675     wxMenu *menuOld = node->GetData();
 676     node->SetData(menu);
 677
 678     menu->Attach(this);
 679     menuOld->Detach();
 680
 681     return menuOld;
 682 }
 683
 684 wxMenu *wxMenuBarBase::Remove(size_t pos)
 685 {
 686     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 687     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::Remove()") );
 688
 689     wxMenu *menu = node->GetData();
 690     m_menus.Erase(node);
 691     menu->Detach();
 692
 693     return menu;
 694 }
 695
 696 int wxMenuBarBase::FindMenu(const wxString& title) const
 697 {
 698     wxString label = wxMenuItem::GetLabelText(title);
 699
 700     size_t count = GetMenuCount();
 701     for ( size_t i = 0; i < count; i++ )
 702     {
 703         wxString title2 = GetMenuLabel(i);
 704         if ( (title2 == title) ||
 705              (wxMenuItem::GetLabelText(title2) == label) )
 706         {
 707             // found
 708             return (int)i;
 709         }
 710     }
 711
 712     return wxNOT_FOUND;
 713
 714 }
 715
 716 // ----------------------------------------------------------------------------
 717 // wxMenuBar attaching/detaching to/from the frame
 718 // ----------------------------------------------------------------------------
 719
 720 void wxMenuBarBase::Attach(wxFrame *frame)
 721 {
 722     wxASSERT_MSG( !IsAttached(), wxT("menubar already attached!") );
 723
 724     m_menuBarFrame = frame;
 725 }
 726
 727 void wxMenuBarBase::Detach()
 728 {
 729     wxASSERT_MSG( IsAttached(), wxT("detaching unattached menubar") );
 730
 731     m_menuBarFrame = NULL;
 732 }
 733
 734 // ----------------------------------------------------------------------------
 735 // wxMenuBar searching for items
 736 // ----------------------------------------------------------------------------
 737
 738 wxMenuItem *wxMenuBarBase::FindItem(int id, wxMenu **menu) const
 739 {
 740     if ( menu )
 741         *menu = NULL;
 742
 743     wxMenuItem *item = NULL;
 744     size_t count = GetMenuCount(), i;
 745     wxMenuList::const_iterator it;
 746     for ( i = 0, it = m_menus.begin(); !item && (i < count); i++, it++ )
 747     {
 748         item = (*it)->FindItem(id, menu);
 749     }
 750
 751     return item;
 752 }
 753
 754 int wxMenuBarBase::FindMenuItem(const wxString& menu, const wxString& item) const
 755 {
 756     wxString label = wxMenuItem::GetLabelText(menu);
 757
 758     int i = 0;
 759     wxMenuList::compatibility_iterator node;
 760     for ( node = m_menus.GetFirst(); node; node = node->GetNext(), i++ )
 761     {
 762         if ( label == wxMenuItem::GetLabelText(GetMenuLabel(i)) )
 763             return node->GetData()->FindItem(item);
 764     }
 765
 766     return wxNOT_FOUND;
 767 }
 768
 769 // ---------------------------------------------------------------------------
 770 // wxMenuBar functions forwarded to wxMenuItem
 771 // ---------------------------------------------------------------------------
 772
 773 void wxMenuBarBase::Enable(int id, bool enable)
 774 {
 775     wxMenuItem *item = FindItem(id);
 776
 777     wxCHECK_RET( item, wxT("attempt to enable an item which doesn't exist") );
 778
 779     item->Enable(enable);
 780 }
 781
 782 void wxMenuBarBase::Check(int id, bool check)
 783 {
 784     wxMenuItem *item = FindItem(id);
 785
 786     wxCHECK_RET( item, wxT("attempt to check an item which doesn't exist") );
 787     wxCHECK_RET( item->IsCheckable(), wxT("attempt to check an uncheckable item") );
 788
 789     item->Check(check);
 790 }
 791
 792 bool wxMenuBarBase::IsChecked(int id) const
 793 {
 794     wxMenuItem *item = FindItem(id);
 795
 796     wxCHECK_MSG( item, false, wxT("wxMenuBar::IsChecked(): no such item") );
 797
 798     return item->IsChecked();
 799 }
 800
 801 bool wxMenuBarBase::IsEnabled(int id) const
 802 {
 803     wxMenuItem *item = FindItem(id);
 804
 805     wxCHECK_MSG( item, false, wxT("wxMenuBar::IsEnabled(): no such item") );
 806
 807     return item->IsEnabled();
 808 }
 809
 810 void wxMenuBarBase::SetLabel(int id, const wxString& label)
 811 {
 812     wxMenuItem *item = FindItem(id);
 813
 814     wxCHECK_RET( item, wxT("wxMenuBar::SetLabel(): no such item") );
 815
 816     item->SetItemLabel(label);
 817 }
 818
 819 wxString wxMenuBarBase::GetLabel(int id) const
 820 {
 821     wxMenuItem *item = FindItem(id);
 822
 823     wxCHECK_MSG( item, wxEmptyString,
 824                  wxT("wxMenuBar::GetLabel(): no such item") );
 825
 826     return item->GetItemLabel();
 827 }
 828
 829 void wxMenuBarBase::SetHelpString(int id, const wxString& helpString)
 830 {
 831     wxMenuItem *item = FindItem(id);
 832
 833     wxCHECK_RET( item, wxT("wxMenuBar::SetHelpString(): no such item") );
 834
 835     item->SetHelp(helpString);
 836 }
 837
 838 wxString wxMenuBarBase::GetHelpString(int id) const
 839 {
 840     wxMenuItem *item = FindItem(id);
 841
 842     wxCHECK_MSG( item, wxEmptyString,
 843                  wxT("wxMenuBar::GetHelpString(): no such item") );
 844
 845     return item->GetHelp();
 846 }
 847
 848 void wxMenuBarBase::UpdateMenus()
 849 {
 850     wxEvtHandler* source;
 851     wxMenu* menu;
 852     int nCount = GetMenuCount();
 853     for (int n = 0; n < nCount; n++)
 854     {
 855         menu = GetMenu( n );
 856         if (menu != NULL)
 857         {
 858             source = menu->GetEventHandler();
 859             if (source != NULL)
 860                 menu->UpdateUI( source );
 861         }
 862     }
 863 }
 864
 865 #if WXWIN_COMPATIBILITY_2_8
 866 // get or change the label of the menu at given position
 867 void wxMenuBarBase::SetLabelTop(size_t pos, const wxString& label)
 868 {
 869     SetMenuLabel(pos, label);
 870 }
 871
 872 wxString wxMenuBarBase::GetLabelTop(size_t pos) const
 873 {
 874     return GetMenuLabelText(pos);
 875 }
 876 #endif
 877
 878 #endif // wxUSE_MENUS