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 wxWindow *wxMenuBase::GetWindow() const
 544 {
 545     return GetMenuBar() ? GetMenuBar()->GetFrame() : GetInvokingWindow();
 546 }
 547
 548 // ----------------------------------------------------------------------------
 549 // wxMenu functions forwarded to wxMenuItem
 550 // ----------------------------------------------------------------------------
 551
 552 void wxMenuBase::Enable( int id, bool enable )
 553 {
 554     wxMenuItem *item = FindItem(id);
 555
 556     wxCHECK_RET( item, wxT("wxMenu::Enable: no such item") );
 557
 558     item->Enable(enable);
 559 }
 560
 561 bool wxMenuBase::IsEnabled( int id ) const
 562 {
 563     wxMenuItem *item = FindItem(id);
 564
 565     wxCHECK_MSG( item, false, wxT("wxMenu::IsEnabled: no such item") );
 566
 567     return item->IsEnabled();
 568 }
 569
 570 void wxMenuBase::Check( int id, bool enable )
 571 {
 572     wxMenuItem *item = FindItem(id);
 573
 574     wxCHECK_RET( item, wxT("wxMenu::Check: no such item") );
 575
 576     item->Check(enable);
 577 }
 578
 579 bool wxMenuBase::IsChecked( int id ) const
 580 {
 581     wxMenuItem *item = FindItem(id);
 582
 583     wxCHECK_MSG( item, false, wxT("wxMenu::IsChecked: no such item") );
 584
 585     return item->IsChecked();
 586 }
 587
 588 void wxMenuBase::SetLabel( int id, const wxString &label )
 589 {
 590     wxMenuItem *item = FindItem(id);
 591
 592     wxCHECK_RET( item, wxT("wxMenu::SetLabel: no such item") );
 593
 594     item->SetItemLabel(label);
 595 }
 596
 597 wxString wxMenuBase::GetLabel( int id ) const
 598 {
 599     wxMenuItem *item = FindItem(id);
 600
 601     wxCHECK_MSG( item, wxEmptyString, wxT("wxMenu::GetLabel: no such item") );
 602
 603     return item->GetItemLabel();
 604 }
 605
 606 void wxMenuBase::SetHelpString( int id, const wxString& helpString )
 607 {
 608     wxMenuItem *item = FindItem(id);
 609
 610     wxCHECK_RET( item, wxT("wxMenu::SetHelpString: no such item") );
 611
 612     item->SetHelp( helpString );
 613 }
 614
 615 wxString wxMenuBase::GetHelpString( int id ) const
 616 {
 617     wxMenuItem *item = FindItem(id);
 618
 619     wxCHECK_MSG( item, wxEmptyString, wxT("wxMenu::GetHelpString: no such item") );
 620
 621     return item->GetHelp();
 622 }
 623
 624 // ----------------------------------------------------------------------------
 625 // wxMenuBarBase ctor and dtor
 626 // ----------------------------------------------------------------------------
 627
 628 wxMenuBarBase::wxMenuBarBase()
 629 {
 630     // not attached yet
 631     m_menuBarFrame = NULL;
 632 }
 633
 634 wxMenuBarBase::~wxMenuBarBase()
 635 {
 636     WX_CLEAR_LIST(wxMenuList, m_menus);
 637 }
 638
 639 // ----------------------------------------------------------------------------
 640 // wxMenuBar item access: the base class versions manage m_menus list, the
 641 // derived class should reflect the changes in the real menubar
 642 // ----------------------------------------------------------------------------
 643
 644 wxMenu *wxMenuBarBase::GetMenu(size_t pos) const
 645 {
 646     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 647     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::GetMenu()") );
 648
 649     return node->GetData();
 650 }
 651
 652 bool wxMenuBarBase::Append(wxMenu *menu, const wxString& title)
 653 {
 654     wxCHECK_MSG( menu, false, wxT("can't append NULL menu") );
 655     wxCHECK_MSG( !title.empty(), false, wxT("can't append menu with empty title") );
 656
 657     m_menus.Append(menu);
 658     menu->Attach(this);
 659
 660     return true;
 661 }
 662
 663 bool wxMenuBarBase::Insert(size_t pos, wxMenu *menu,
 664                            const wxString& title)
 665 {
 666     if ( pos == m_menus.GetCount() )
 667     {
 668         return wxMenuBarBase::Append(menu, title);
 669     }
 670     else // not at the end
 671     {
 672         wxCHECK_MSG( menu, false, wxT("can't insert NULL menu") );
 673
 674         wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 675         wxCHECK_MSG( node, false, wxT("bad index in wxMenuBar::Insert()") );
 676
 677         m_menus.Insert(node, menu);
 678         menu->Attach(this);
 679
 680         return true;
 681     }
 682 }
 683
 684 wxMenu *wxMenuBarBase::Replace(size_t pos, wxMenu *menu,
 685                                const wxString& WXUNUSED(title))
 686 {
 687     wxCHECK_MSG( menu, NULL, wxT("can't insert NULL menu") );
 688
 689     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 690     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::Replace()") );
 691
 692     wxMenu *menuOld = node->GetData();
 693     node->SetData(menu);
 694
 695     menu->Attach(this);
 696     menuOld->Detach();
 697
 698     return menuOld;
 699 }
 700
 701 wxMenu *wxMenuBarBase::Remove(size_t pos)
 702 {
 703     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 704     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::Remove()") );
 705
 706     wxMenu *menu = node->GetData();
 707     m_menus.Erase(node);
 708     menu->Detach();
 709
 710     return menu;
 711 }
 712
 713 int wxMenuBarBase::FindMenu(const wxString& title) const
 714 {
 715     wxString label = wxMenuItem::GetLabelText(title);
 716
 717     size_t count = GetMenuCount();
 718     for ( size_t i = 0; i < count; i++ )
 719     {
 720         wxString title2 = GetMenuLabel(i);
 721         if ( (title2 == title) ||
 722              (wxMenuItem::GetLabelText(title2) == label) )
 723         {
 724             // found
 725             return (int)i;
 726         }
 727     }
 728
 729     return wxNOT_FOUND;
 730
 731 }
 732
 733 // ----------------------------------------------------------------------------
 734 // wxMenuBar attaching/detaching to/from the frame
 735 // ----------------------------------------------------------------------------
 736
 737 void wxMenuBarBase::Attach(wxFrame *frame)
 738 {
 739     wxASSERT_MSG( !IsAttached(), wxT("menubar already attached!") );
 740
 741     m_menuBarFrame = frame;
 742 }
 743
 744 void wxMenuBarBase::Detach()
 745 {
 746     wxASSERT_MSG( IsAttached(), wxT("detaching unattached menubar") );
 747
 748     m_menuBarFrame = NULL;
 749 }
 750
 751 // ----------------------------------------------------------------------------
 752 // wxMenuBar searching for items
 753 // ----------------------------------------------------------------------------
 754
 755 wxMenuItem *wxMenuBarBase::FindItem(int id, wxMenu **menu) const
 756 {
 757     if ( menu )
 758         *menu = NULL;
 759
 760     wxMenuItem *item = NULL;
 761     size_t count = GetMenuCount(), i;
 762     wxMenuList::const_iterator it;
 763     for ( i = 0, it = m_menus.begin(); !item && (i < count); i++, it++ )
 764     {
 765         item = (*it)->FindItem(id, menu);
 766     }
 767
 768     return item;
 769 }
 770
 771 int wxMenuBarBase::FindMenuItem(const wxString& menu, const wxString& item) const
 772 {
 773     wxString label = wxMenuItem::GetLabelText(menu);
 774
 775     int i = 0;
 776     wxMenuList::compatibility_iterator node;
 777     for ( node = m_menus.GetFirst(); node; node = node->GetNext(), i++ )
 778     {
 779         if ( label == wxMenuItem::GetLabelText(GetMenuLabel(i)) )
 780             return node->GetData()->FindItem(item);
 781     }
 782
 783     return wxNOT_FOUND;
 784 }
 785
 786 // ---------------------------------------------------------------------------
 787 // wxMenuBar functions forwarded to wxMenuItem
 788 // ---------------------------------------------------------------------------
 789
 790 void wxMenuBarBase::Enable(int id, bool enable)
 791 {
 792     wxMenuItem *item = FindItem(id);
 793
 794     wxCHECK_RET( item, wxT("attempt to enable an item which doesn't exist") );
 795
 796     item->Enable(enable);
 797 }
 798
 799 void wxMenuBarBase::Check(int id, bool check)
 800 {
 801     wxMenuItem *item = FindItem(id);
 802
 803     wxCHECK_RET( item, wxT("attempt to check an item which doesn't exist") );
 804     wxCHECK_RET( item->IsCheckable(), wxT("attempt to check an uncheckable item") );
 805
 806     item->Check(check);
 807 }
 808
 809 bool wxMenuBarBase::IsChecked(int id) const
 810 {
 811     wxMenuItem *item = FindItem(id);
 812
 813     wxCHECK_MSG( item, false, wxT("wxMenuBar::IsChecked(): no such item") );
 814
 815     return item->IsChecked();
 816 }
 817
 818 bool wxMenuBarBase::IsEnabled(int id) const
 819 {
 820     wxMenuItem *item = FindItem(id);
 821
 822     wxCHECK_MSG( item, false, wxT("wxMenuBar::IsEnabled(): no such item") );
 823
 824     return item->IsEnabled();
 825 }
 826
 827 void wxMenuBarBase::SetLabel(int id, const wxString& label)
 828 {
 829     wxMenuItem *item = FindItem(id);
 830
 831     wxCHECK_RET( item, wxT("wxMenuBar::SetLabel(): no such item") );
 832
 833     item->SetItemLabel(label);
 834 }
 835
 836 wxString wxMenuBarBase::GetLabel(int id) const
 837 {
 838     wxMenuItem *item = FindItem(id);
 839
 840     wxCHECK_MSG( item, wxEmptyString,
 841                  wxT("wxMenuBar::GetLabel(): no such item") );
 842
 843     return item->GetItemLabel();
 844 }
 845
 846 void wxMenuBarBase::SetHelpString(int id, const wxString& helpString)
 847 {
 848     wxMenuItem *item = FindItem(id);
 849
 850     wxCHECK_RET( item, wxT("wxMenuBar::SetHelpString(): no such item") );
 851
 852     item->SetHelp(helpString);
 853 }
 854
 855 wxString wxMenuBarBase::GetHelpString(int id) const
 856 {
 857     wxMenuItem *item = FindItem(id);
 858
 859     wxCHECK_MSG( item, wxEmptyString,
 860                  wxT("wxMenuBar::GetHelpString(): no such item") );
 861
 862     return item->GetHelp();
 863 }
 864
 865 void wxMenuBarBase::UpdateMenus()
 866 {
 867     wxEvtHandler* source;
 868     wxMenu* menu;
 869     int nCount = GetMenuCount();
 870     for (int n = 0; n < nCount; n++)
 871     {
 872         menu = GetMenu( n );
 873         if (menu != NULL)
 874         {
 875             source = menu->GetEventHandler();
 876             if (source != NULL)
 877                 menu->UpdateUI( source );
 878         }
 879     }
 880 }
 881
 882 #if WXWIN_COMPATIBILITY_2_8
 883 // get or change the label of the menu at given position
 884 void wxMenuBarBase::SetLabelTop(size_t pos, const wxString& label)
 885 {
 886     SetMenuLabel(pos, label);
 887 }
 888
 889 wxString wxMenuBarBase::GetLabelTop(size_t pos) const
 890 {
 891     return GetMenuLabelText(pos);
 892 }
 893 #endif
 894
 895 #endif // wxUSE_MENUS