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