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 #endif
  34
  35 #include "wx/stockitem.h"
  36
  37 // ----------------------------------------------------------------------------
  38 // template lists
  39 // ----------------------------------------------------------------------------
  40
  41 #include "wx/listimpl.cpp"
  42
  43 WX_DEFINE_LIST(wxMenuList)
  44 WX_DEFINE_LIST(wxMenuItemList)
  45
  46 // ============================================================================
  47 // implementation
  48 // ============================================================================
  49
  50 // ----------------------------------------------------------------------------
  51 // wxMenuItemBase
  52 // ----------------------------------------------------------------------------
  53
  54 wxMenuItemBase::wxMenuItemBase(wxMenu *parentMenu,
  55                                int id,
  56                                const wxString& text,
  57                                const wxString& help,
  58                                wxItemKind kind,
  59                                wxMenu *subMenu)
  60 {
  61     // notice that parentMenu can be NULL: the item can be attached to the menu
  62     // later with SetMenu()
  63
  64     m_parentMenu  = parentMenu;
  65     m_subMenu     = subMenu;
  66     m_isEnabled   = true;
  67     m_isChecked   = false;
  68     m_id          = id;
  69     m_kind        = kind;
  70     if (m_id == wxID_ANY)
  71         m_id = wxWindow::NewControlId();
  72     if (m_id == wxID_SEPARATOR)
  73         m_kind = wxITEM_SEPARATOR;
  74
  75     SetItemLabel(text);
  76     SetHelp(help);
  77 }
  78
  79 wxMenuItemBase::~wxMenuItemBase()
  80 {
  81     delete m_subMenu;
  82 }
  83
  84 #if wxUSE_ACCEL
  85
  86 wxAcceleratorEntry *wxMenuItemBase::GetAccel() const
  87 {
  88     return wxAcceleratorEntry::Create(GetItemLabel());
  89 }
  90
  91 void wxMenuItemBase::SetAccel(wxAcceleratorEntry *accel)
  92 {
  93     wxString text = m_text.BeforeFirst(wxT('\t'));
  94     if ( accel )
  95     {
  96         text += wxT('\t');
  97         text += accel->ToString();
  98     }
  99
 100     SetItemLabel(text);
 101 }
 102
 103 #endif // wxUSE_ACCEL
 104
 105 void wxMenuItemBase::SetItemLabel(const wxString& str)
 106 {
 107     m_text = str;
 108
 109     if ( m_text.empty() && !IsSeparator() )
 110     {
 111         wxASSERT_MSG( wxIsStockID(GetId()),
 112                       wxT("A non-stock menu item with an empty label?") );
 113         m_text = wxGetStockLabel(GetId(), wxSTOCK_WITH_ACCELERATOR |
 114                                           wxSTOCK_WITH_MNEMONIC);
 115     }
 116 }
 117
 118 void wxMenuItemBase::SetHelp(const wxString& str)
 119 {
 120     m_help = str;
 121
 122     if ( m_help.empty() && !IsSeparator() && wxIsStockID(GetId()) )
 123     {
 124         // get a stock help string
 125         m_help = wxGetStockHelpString(GetId());
 126     }
 127 }
 128
 129 #ifndef __WXPM__
 130 wxString wxMenuItemBase::GetLabelText(const wxString& text)
 131 {
 132     return wxStripMenuCodes(text);
 133 }
 134 #endif
 135
 136 #if WXWIN_COMPATIBILITY_2_8
 137 wxString wxMenuItemBase::GetLabelFromText(const wxString& text)
 138 {
 139     return GetLabelText(text);
 140 }
 141 #endif
 142
 143 bool wxMenuBase::ms_locked = true;
 144
 145 // ----------------------------------------------------------------------------
 146 // wxMenu ctor and dtor
 147 // ----------------------------------------------------------------------------
 148
 149 void wxMenuBase::Init(long style)
 150 {
 151     m_menuBar = NULL;
 152     m_menuParent = NULL;
 153
 154     m_invokingWindow = NULL;
 155     m_style = style;
 156     m_clientData = NULL;
 157     m_eventHandler = this;
 158 }
 159
 160 wxMenuBase::~wxMenuBase()
 161 {
 162     WX_CLEAR_LIST(wxMenuItemList, m_items);
 163 }
 164
 165 // ----------------------------------------------------------------------------
 166 // wxMenu item adding/removing
 167 // ----------------------------------------------------------------------------
 168
 169 void wxMenuBase::AddSubMenu(wxMenu *submenu)
 170 {
 171     wxCHECK_RET( submenu, wxT("can't add a NULL submenu") );
 172
 173     submenu->SetParent((wxMenu *)this);
 174 }
 175
 176 wxMenuItem* wxMenuBase::DoAppend(wxMenuItem *item)
 177 {
 178     wxCHECK_MSG( item, NULL, wxT("invalid item in wxMenu::Append()") );
 179
 180     m_items.Append(item);
 181     item->SetMenu((wxMenu*)this);
 182     if ( item->IsSubMenu() )
 183     {
 184         AddSubMenu(item->GetSubMenu());
 185     }
 186
 187     return item;
 188 }
 189
 190 wxMenuItem* wxMenuBase::Insert(size_t pos, wxMenuItem *item)
 191 {
 192     wxCHECK_MSG( item, NULL, wxT("invalid item in wxMenu::Insert") );
 193
 194     if ( pos == GetMenuItemCount() )
 195     {
 196         return DoAppend(item);
 197     }
 198     else
 199     {
 200         wxCHECK_MSG( pos < GetMenuItemCount(), NULL,
 201                      wxT("invalid index in wxMenu::Insert") );
 202
 203         return DoInsert(pos, item);
 204     }
 205 }
 206
 207 wxMenuItem* wxMenuBase::DoInsert(size_t pos, wxMenuItem *item)
 208 {
 209     wxCHECK_MSG( item, NULL, wxT("invalid item in wxMenu::Insert()") );
 210
 211     wxMenuItemList::compatibility_iterator node = m_items.Item(pos);
 212     wxCHECK_MSG( node, NULL, wxT("invalid index in wxMenu::Insert()") );
 213
 214     m_items.Insert(node, item);
 215     item->SetMenu((wxMenu*)this);
 216     if ( item->IsSubMenu() )
 217     {
 218         AddSubMenu(item->GetSubMenu());
 219     }
 220
 221     return item;
 222 }
 223
 224 wxMenuItem *wxMenuBase::Remove(wxMenuItem *item)
 225 {
 226     wxCHECK_MSG( item, NULL, wxT("invalid item in wxMenu::Remove") );
 227
 228     return DoRemove(item);
 229 }
 230
 231 wxMenuItem *wxMenuBase::DoRemove(wxMenuItem *item)
 232 {
 233     wxMenuItemList::compatibility_iterator node = m_items.Find(item);
 234
 235     // if we get here, the item is valid or one of Remove() functions is broken
 236     wxCHECK_MSG( node, NULL, wxT("bug in wxMenu::Remove logic") );
 237
 238     // we detach the item, but we do delete the list node (i.e. don't call
 239     // DetachNode() here!)
 240     m_items.Erase(node);
 241
 242     // item isn't attached to anything any more
 243     item->SetMenu(NULL);
 244     wxMenu *submenu = item->GetSubMenu();
 245     if ( submenu )
 246     {
 247         submenu->SetParent(NULL);
 248         if ( submenu->IsAttached() )
 249             submenu->Detach();
 250     }
 251
 252     return item;
 253 }
 254
 255 bool wxMenuBase::Delete(wxMenuItem *item)
 256 {
 257     wxCHECK_MSG( item, false, wxT("invalid item in wxMenu::Delete") );
 258
 259     return DoDelete(item);
 260 }
 261
 262 bool wxMenuBase::DoDelete(wxMenuItem *item)
 263 {
 264     wxMenuItem *item2 = DoRemove(item);
 265     wxCHECK_MSG( item2, false, wxT("failed to delete menu item") );
 266
 267     // don't delete the submenu
 268     item2->SetSubMenu(NULL);
 269
 270     delete item2;
 271
 272     return true;
 273 }
 274
 275 bool wxMenuBase::Destroy(wxMenuItem *item)
 276 {
 277     wxCHECK_MSG( item, false, wxT("invalid item in wxMenu::Destroy") );
 278
 279     return DoDestroy(item);
 280 }
 281
 282 bool wxMenuBase::DoDestroy(wxMenuItem *item)
 283 {
 284     wxMenuItem *item2 = DoRemove(item);
 285     wxCHECK_MSG( item2, false, wxT("failed to delete menu item") );
 286
 287     delete item2;
 288
 289     return true;
 290 }
 291
 292 // ----------------------------------------------------------------------------
 293 // wxMenu searching for items
 294 // ----------------------------------------------------------------------------
 295
 296 // Finds the item id matching the given string, wxNOT_FOUND if not found.
 297 int wxMenuBase::FindItem(const wxString& text) const
 298 {
 299     wxString label = wxMenuItem::GetLabelText(text);
 300     for ( wxMenuItemList::compatibility_iterator node = m_items.GetFirst();
 301           node;
 302           node = node->GetNext() )
 303     {
 304         wxMenuItem *item = node->GetData();
 305         if ( item->IsSubMenu() )
 306         {
 307             int rc = item->GetSubMenu()->FindItem(label);
 308             if ( rc != wxNOT_FOUND )
 309                 return rc;
 310         }
 311
 312         // we execute this code for submenus as well to alllow finding them by
 313         // name just like the ordinary items
 314         if ( !item->IsSeparator() )
 315         {
 316             if ( item->GetItemLabelText() == label )
 317                 return item->GetId();
 318         }
 319     }
 320
 321     return wxNOT_FOUND;
 322 }
 323
 324 // recursive search for item by id
 325 wxMenuItem *wxMenuBase::FindItem(int itemId, wxMenu **itemMenu) const
 326 {
 327     if ( itemMenu )
 328         *itemMenu = NULL;
 329
 330     wxMenuItem *item = NULL;
 331     for ( wxMenuItemList::compatibility_iterator node = m_items.GetFirst();
 332           node && !item;
 333           node = node->GetNext() )
 334     {
 335         item = node->GetData();
 336
 337         if ( item->GetId() == itemId )
 338         {
 339             if ( itemMenu )
 340                 *itemMenu = (wxMenu *)this;
 341         }
 342         else if ( item->IsSubMenu() )
 343         {
 344             item = item->GetSubMenu()->FindItem(itemId, itemMenu);
 345         }
 346         else
 347         {
 348             // don't exit the loop
 349             item = NULL;
 350         }
 351     }
 352
 353     return item;
 354 }
 355
 356 // non recursive search
 357 wxMenuItem *wxMenuBase::FindChildItem(int id, size_t *ppos) const
 358 {
 359     wxMenuItem *item = NULL;
 360     wxMenuItemList::compatibility_iterator node = GetMenuItems().GetFirst();
 361
 362     size_t pos;
 363     for ( pos = 0; node; pos++ )
 364     {
 365         if ( node->GetData()->GetId() == id )
 366         {
 367             item = node->GetData();
 368
 369             break;
 370         }
 371
 372         node = node->GetNext();
 373     }
 374
 375     if ( ppos )
 376     {
 377         *ppos = item ? pos : (size_t)wxNOT_FOUND;
 378     }
 379
 380     return item;
 381 }
 382
 383 // find by position
 384 wxMenuItem* wxMenuBase::FindItemByPosition(size_t position) const
 385 {
 386     wxCHECK_MSG( position < m_items.GetCount(), NULL,
 387                  wxT("wxMenu::FindItemByPosition(): invalid menu index") );
 388
 389     return m_items.Item( position )->GetData();
 390 }
 391
 392 // ----------------------------------------------------------------------------
 393 // wxMenu helpers used by derived classes
 394 // ----------------------------------------------------------------------------
 395
 396 // Update a menu and all submenus recursively. source is the object that has
 397 // the update event handlers defined for it. If NULL, the menu or associated
 398 // window will be used.
 399 void wxMenuBase::UpdateUI(wxEvtHandler* source)
 400 {
 401     if (GetInvokingWindow())
 402     {
 403         // Don't update menus if the parent
 404         // frame is about to get deleted
 405         wxWindow *tlw = wxGetTopLevelParent( GetInvokingWindow() );
 406         if (tlw && wxPendingDelete.Member(tlw))
 407             return;
 408     }
 409
 410     if ( !source && GetInvokingWindow() )
 411         source = GetInvokingWindow()->GetEventHandler();
 412     if ( !source )
 413         source = GetEventHandler();
 414     if ( !source )
 415         source = this;
 416
 417     wxMenuItemList::compatibility_iterator  node = GetMenuItems().GetFirst();
 418     while ( node )
 419     {
 420         wxMenuItem* item = node->GetData();
 421         if ( !item->IsSeparator() )
 422         {
 423             wxWindowID id = item->GetId();
 424             wxUpdateUIEvent event(id);
 425             event.SetEventObject( source );
 426
 427             if ( source->ProcessEvent(event) )
 428             {
 429                 // if anything changed, update the changed attribute
 430                 if (event.GetSetText())
 431                     SetLabel(id, event.GetText());
 432                 if (event.GetSetChecked())
 433                     Check(id, event.GetChecked());
 434                 if (event.GetSetEnabled())
 435                     Enable(id, event.GetEnabled());
 436             }
 437
 438             // recurse to the submenus
 439             if ( item->GetSubMenu() )
 440                 item->GetSubMenu()->UpdateUI(source);
 441         }
 442         //else: item is a separator (which doesn't process update UI events)
 443
 444         node = node->GetNext();
 445     }
 446 }
 447
 448 bool wxMenuBase::SendEvent(int id, int checked)
 449 {
 450     wxCommandEvent event(wxEVT_COMMAND_MENU_SELECTED, id);
 451     event.SetEventObject(this);
 452     event.SetInt(checked);
 453
 454     bool processed = false;
 455
 456     // Try the menu's event handler
 457     // if ( !processed )
 458     {
 459         wxEvtHandler *handler = GetEventHandler();
 460         if ( handler )
 461             processed = handler->SafelyProcessEvent(event);
 462     }
 463
 464     // Try the window the menu was popped up from (and up through the
 465     // hierarchy)
 466     if ( !processed )
 467     {
 468         const wxMenuBase *menu = this;
 469         while ( menu )
 470         {
 471             wxWindow *win = menu->GetInvokingWindow();
 472             if ( win )
 473             {
 474                 processed = win->HandleWindowEvent(event);
 475                 break;
 476             }
 477
 478             menu = menu->GetParent();
 479         }
 480     }
 481
 482     return processed;
 483 }
 484
 485 // ----------------------------------------------------------------------------
 486 // wxMenu attaching/detaching to/from menu bar
 487 // ----------------------------------------------------------------------------
 488
 489 wxMenuBar* wxMenuBase::GetMenuBar() const
 490 {
 491     if(GetParent())
 492         return GetParent()->GetMenuBar();
 493     return m_menuBar;
 494 }
 495
 496 void wxMenuBase::Attach(wxMenuBarBase *menubar)
 497 {
 498     // use Detach() instead!
 499     wxASSERT_MSG( menubar, wxT("menu can't be attached to NULL menubar") );
 500
 501     // use IsAttached() to prevent this from happening
 502     wxASSERT_MSG( !m_menuBar, wxT("attaching menu twice?") );
 503
 504     m_menuBar = (wxMenuBar *)menubar;
 505 }
 506
 507 void wxMenuBase::Detach()
 508 {
 509     // use IsAttached() to prevent this from happening
 510     wxASSERT_MSG( m_menuBar, wxT("detaching unattached menu?") );
 511
 512     m_menuBar = NULL;
 513 }
 514
 515 // ----------------------------------------------------------------------------
 516 // wxMenu invoking window handling
 517 // ----------------------------------------------------------------------------
 518
 519 void wxMenuBase::SetInvokingWindow(wxWindow *win)
 520 {
 521     wxASSERT_MSG( !GetParent(),
 522                     "should only be called for top level popup menus" );
 523     wxASSERT_MSG( !IsAttached(),
 524                     "menus attached to menu bar can't have invoking window" );
 525
 526     m_invokingWindow = win;
 527 }
 528
 529 wxWindow *wxMenuBase::GetInvokingWindow() const
 530 {
 531     // only the popup menu itself has a non-NULL invoking window so recurse
 532     // upwards until we find it
 533     const wxMenuBase *menu = this;
 534     while ( menu->GetParent() )
 535     {
 536         menu = menu->GetParent();
 537     }
 538
 539     // menu is a top level menu here
 540     return menu->m_invokingWindow;
 541 }
 542
 543 // ----------------------------------------------------------------------------
 544 // wxMenu functions forwarded to wxMenuItem
 545 // ----------------------------------------------------------------------------
 546
 547 void wxMenuBase::Enable( int id, bool enable )
 548 {
 549     wxMenuItem *item = FindItem(id);
 550
 551     wxCHECK_RET( item, wxT("wxMenu::Enable: no such item") );
 552
 553     item->Enable(enable);
 554 }
 555
 556 bool wxMenuBase::IsEnabled( int id ) const
 557 {
 558     wxMenuItem *item = FindItem(id);
 559
 560     wxCHECK_MSG( item, false, wxT("wxMenu::IsEnabled: no such item") );
 561
 562     return item->IsEnabled();
 563 }
 564
 565 void wxMenuBase::Check( int id, bool enable )
 566 {
 567     wxMenuItem *item = FindItem(id);
 568
 569     wxCHECK_RET( item, wxT("wxMenu::Check: no such item") );
 570
 571     item->Check(enable);
 572 }
 573
 574 bool wxMenuBase::IsChecked( int id ) const
 575 {
 576     wxMenuItem *item = FindItem(id);
 577
 578     wxCHECK_MSG( item, false, wxT("wxMenu::IsChecked: no such item") );
 579
 580     return item->IsChecked();
 581 }
 582
 583 void wxMenuBase::SetLabel( int id, const wxString &label )
 584 {
 585     wxMenuItem *item = FindItem(id);
 586
 587     wxCHECK_RET( item, wxT("wxMenu::SetLabel: no such item") );
 588
 589     item->SetItemLabel(label);
 590 }
 591
 592 wxString wxMenuBase::GetLabel( int id ) const
 593 {
 594     wxMenuItem *item = FindItem(id);
 595
 596     wxCHECK_MSG( item, wxEmptyString, wxT("wxMenu::GetLabel: no such item") );
 597
 598     return item->GetItemLabel();
 599 }
 600
 601 void wxMenuBase::SetHelpString( int id, const wxString& helpString )
 602 {
 603     wxMenuItem *item = FindItem(id);
 604
 605     wxCHECK_RET( item, wxT("wxMenu::SetHelpString: no such item") );
 606
 607     item->SetHelp( helpString );
 608 }
 609
 610 wxString wxMenuBase::GetHelpString( int id ) const
 611 {
 612     wxMenuItem *item = FindItem(id);
 613
 614     wxCHECK_MSG( item, wxEmptyString, wxT("wxMenu::GetHelpString: no such item") );
 615
 616     return item->GetHelp();
 617 }
 618
 619 // ----------------------------------------------------------------------------
 620 // wxMenuBarBase ctor and dtor
 621 // ----------------------------------------------------------------------------
 622
 623 wxMenuBarBase::wxMenuBarBase()
 624 {
 625     // not attached yet
 626     m_menuBarFrame = NULL;
 627 }
 628
 629 wxMenuBarBase::~wxMenuBarBase()
 630 {
 631     WX_CLEAR_LIST(wxMenuList, m_menus);
 632 }
 633
 634 // ----------------------------------------------------------------------------
 635 // wxMenuBar item access: the base class versions manage m_menus list, the
 636 // derived class should reflect the changes in the real menubar
 637 // ----------------------------------------------------------------------------
 638
 639 wxMenu *wxMenuBarBase::GetMenu(size_t pos) const
 640 {
 641     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 642     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::GetMenu()") );
 643
 644     return node->GetData();
 645 }
 646
 647 bool wxMenuBarBase::Append(wxMenu *menu, const wxString& title)
 648 {
 649     wxCHECK_MSG( menu, false, wxT("can't append NULL menu") );
 650     wxCHECK_MSG( !title.empty(), false, wxT("can't append menu with empty title") );
 651
 652     m_menus.Append(menu);
 653     menu->Attach(this);
 654
 655     return true;
 656 }
 657
 658 bool wxMenuBarBase::Insert(size_t pos, wxMenu *menu,
 659                            const wxString& title)
 660 {
 661     if ( pos == m_menus.GetCount() )
 662     {
 663         return wxMenuBarBase::Append(menu, title);
 664     }
 665     else // not at the end
 666     {
 667         wxCHECK_MSG( menu, false, wxT("can't insert NULL menu") );
 668
 669         wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 670         wxCHECK_MSG( node, false, wxT("bad index in wxMenuBar::Insert()") );
 671
 672         m_menus.Insert(node, menu);
 673         menu->Attach(this);
 674
 675         return true;
 676     }
 677 }
 678
 679 wxMenu *wxMenuBarBase::Replace(size_t pos, wxMenu *menu,
 680                                const wxString& WXUNUSED(title))
 681 {
 682     wxCHECK_MSG( menu, NULL, wxT("can't insert NULL menu") );
 683
 684     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 685     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::Replace()") );
 686
 687     wxMenu *menuOld = node->GetData();
 688     node->SetData(menu);
 689
 690     menu->Attach(this);
 691     menuOld->Detach();
 692
 693     return menuOld;
 694 }
 695
 696 wxMenu *wxMenuBarBase::Remove(size_t pos)
 697 {
 698     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 699     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::Remove()") );
 700
 701     wxMenu *menu = node->GetData();
 702     m_menus.Erase(node);
 703     menu->Detach();
 704
 705     return menu;
 706 }
 707
 708 int wxMenuBarBase::FindMenu(const wxString& title) const
 709 {
 710     wxString label = wxMenuItem::GetLabelText(title);
 711
 712     size_t count = GetMenuCount();
 713     for ( size_t i = 0; i < count; i++ )
 714     {
 715         wxString title2 = GetMenuLabel(i);
 716         if ( (title2 == title) ||
 717              (wxMenuItem::GetLabelText(title2) == label) )
 718         {
 719             // found
 720             return (int)i;
 721         }
 722     }
 723
 724     return wxNOT_FOUND;
 725
 726 }
 727
 728 // ----------------------------------------------------------------------------
 729 // wxMenuBar attaching/detaching to/from the frame
 730 // ----------------------------------------------------------------------------
 731
 732 void wxMenuBarBase::Attach(wxFrame *frame)
 733 {
 734     wxASSERT_MSG( !IsAttached(), wxT("menubar already attached!") );
 735
 736     m_menuBarFrame = frame;
 737 }
 738
 739 void wxMenuBarBase::Detach()
 740 {
 741     wxASSERT_MSG( IsAttached(), wxT("detaching unattached menubar") );
 742
 743     m_menuBarFrame = NULL;
 744 }
 745
 746 // ----------------------------------------------------------------------------
 747 // wxMenuBar searching for items
 748 // ----------------------------------------------------------------------------
 749
 750 wxMenuItem *wxMenuBarBase::FindItem(int id, wxMenu **menu) const
 751 {
 752     if ( menu )
 753         *menu = NULL;
 754
 755     wxMenuItem *item = NULL;
 756     size_t count = GetMenuCount(), i;
 757     wxMenuList::const_iterator it;
 758     for ( i = 0, it = m_menus.begin(); !item && (i < count); i++, it++ )
 759     {
 760         item = (*it)->FindItem(id, menu);
 761     }
 762
 763     return item;
 764 }
 765
 766 int wxMenuBarBase::FindMenuItem(const wxString& menu, const wxString& item) const
 767 {
 768     wxString label = wxMenuItem::GetLabelText(menu);
 769
 770     int i = 0;
 771     wxMenuList::compatibility_iterator node;
 772     for ( node = m_menus.GetFirst(); node; node = node->GetNext(), i++ )
 773     {
 774         if ( label == wxMenuItem::GetLabelText(GetMenuLabel(i)) )
 775             return node->GetData()->FindItem(item);
 776     }
 777
 778     return wxNOT_FOUND;
 779 }
 780
 781 // ---------------------------------------------------------------------------
 782 // wxMenuBar functions forwarded to wxMenuItem
 783 // ---------------------------------------------------------------------------
 784
 785 void wxMenuBarBase::Enable(int id, bool enable)
 786 {
 787     wxMenuItem *item = FindItem(id);
 788
 789     wxCHECK_RET( item, wxT("attempt to enable an item which doesn't exist") );
 790
 791     item->Enable(enable);
 792 }
 793
 794 void wxMenuBarBase::Check(int id, bool check)
 795 {
 796     wxMenuItem *item = FindItem(id);
 797
 798     wxCHECK_RET( item, wxT("attempt to check an item which doesn't exist") );
 799     wxCHECK_RET( item->IsCheckable(), wxT("attempt to check an uncheckable item") );
 800
 801     item->Check(check);
 802 }
 803
 804 bool wxMenuBarBase::IsChecked(int id) const
 805 {
 806     wxMenuItem *item = FindItem(id);
 807
 808     wxCHECK_MSG( item, false, wxT("wxMenuBar::IsChecked(): no such item") );
 809
 810     return item->IsChecked();
 811 }
 812
 813 bool wxMenuBarBase::IsEnabled(int id) const
 814 {
 815     wxMenuItem *item = FindItem(id);
 816
 817     wxCHECK_MSG( item, false, wxT("wxMenuBar::IsEnabled(): no such item") );
 818
 819     return item->IsEnabled();
 820 }
 821
 822 void wxMenuBarBase::SetLabel(int id, const wxString& label)
 823 {
 824     wxMenuItem *item = FindItem(id);
 825
 826     wxCHECK_RET( item, wxT("wxMenuBar::SetLabel(): no such item") );
 827
 828     item->SetItemLabel(label);
 829 }
 830
 831 wxString wxMenuBarBase::GetLabel(int id) const
 832 {
 833     wxMenuItem *item = FindItem(id);
 834
 835     wxCHECK_MSG( item, wxEmptyString,
 836                  wxT("wxMenuBar::GetLabel(): no such item") );
 837
 838     return item->GetItemLabel();
 839 }
 840
 841 void wxMenuBarBase::SetHelpString(int id, const wxString& helpString)
 842 {
 843     wxMenuItem *item = FindItem(id);
 844
 845     wxCHECK_RET( item, wxT("wxMenuBar::SetHelpString(): no such item") );
 846
 847     item->SetHelp(helpString);
 848 }
 849
 850 wxString wxMenuBarBase::GetHelpString(int id) const
 851 {
 852     wxMenuItem *item = FindItem(id);
 853
 854     wxCHECK_MSG( item, wxEmptyString,
 855                  wxT("wxMenuBar::GetHelpString(): no such item") );
 856
 857     return item->GetHelp();
 858 }
 859
 860 void wxMenuBarBase::UpdateMenus()
 861 {
 862     wxEvtHandler* source;
 863     wxMenu* menu;
 864     int nCount = GetMenuCount();
 865     for (int n = 0; n < nCount; n++)
 866     {
 867         menu = GetMenu( n );
 868         if (menu != NULL)
 869         {
 870             source = menu->GetEventHandler();
 871             if (source != NULL)
 872                 menu->UpdateUI( source );
 873         }
 874     }
 875 }
 876
 877 #if WXWIN_COMPATIBILITY_2_8
 878 // get or change the label of the menu at given position
 879 void wxMenuBarBase::SetLabelTop(size_t pos, const wxString& label)
 880 {
 881     SetMenuLabel(pos, label);
 882 }
 883
 884 wxString wxMenuBarBase::GetLabelTop(size_t pos) const
 885 {
 886     return GetMenuLabelText(pos);
 887 }
 888 #endif
 889
 890 #endif // wxUSE_MENUS