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, _T("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                  _T("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, _T("menu can't be attached to NULL menubar") );
 500
 501     // use IsAttached() to prevent this from happening
 502     wxASSERT_MSG( !m_menuBar, _T("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, _T("detaching unattached menu?") );
 511
 512     m_menuBar = NULL;
 513 }
 514
 515 // ----------------------------------------------------------------------------
 516 // wxMenu functions forwarded to wxMenuItem
 517 // ----------------------------------------------------------------------------
 518
 519 void wxMenuBase::Enable( int id, bool enable )
 520 {
 521     wxMenuItem *item = FindItem(id);
 522
 523     wxCHECK_RET( item, wxT("wxMenu::Enable: no such item") );
 524
 525     item->Enable(enable);
 526 }
 527
 528 bool wxMenuBase::IsEnabled( int id ) const
 529 {
 530     wxMenuItem *item = FindItem(id);
 531
 532     wxCHECK_MSG( item, false, wxT("wxMenu::IsEnabled: no such item") );
 533
 534     return item->IsEnabled();
 535 }
 536
 537 void wxMenuBase::Check( int id, bool enable )
 538 {
 539     wxMenuItem *item = FindItem(id);
 540
 541     wxCHECK_RET( item, wxT("wxMenu::Check: no such item") );
 542
 543     item->Check(enable);
 544 }
 545
 546 bool wxMenuBase::IsChecked( int id ) const
 547 {
 548     wxMenuItem *item = FindItem(id);
 549
 550     wxCHECK_MSG( item, false, wxT("wxMenu::IsChecked: no such item") );
 551
 552     return item->IsChecked();
 553 }
 554
 555 void wxMenuBase::SetLabel( int id, const wxString &label )
 556 {
 557     wxMenuItem *item = FindItem(id);
 558
 559     wxCHECK_RET( item, wxT("wxMenu::SetLabel: no such item") );
 560
 561     item->SetItemLabel(label);
 562 }
 563
 564 wxString wxMenuBase::GetLabel( int id ) const
 565 {
 566     wxMenuItem *item = FindItem(id);
 567
 568     wxCHECK_MSG( item, wxEmptyString, wxT("wxMenu::GetLabel: no such item") );
 569
 570     return item->GetItemLabel();
 571 }
 572
 573 void wxMenuBase::SetHelpString( int id, const wxString& helpString )
 574 {
 575     wxMenuItem *item = FindItem(id);
 576
 577     wxCHECK_RET( item, wxT("wxMenu::SetHelpString: no such item") );
 578
 579     item->SetHelp( helpString );
 580 }
 581
 582 wxString wxMenuBase::GetHelpString( int id ) const
 583 {
 584     wxMenuItem *item = FindItem(id);
 585
 586     wxCHECK_MSG( item, wxEmptyString, wxT("wxMenu::GetHelpString: no such item") );
 587
 588     return item->GetHelp();
 589 }
 590
 591 // ----------------------------------------------------------------------------
 592 // wxMenuBarBase ctor and dtor
 593 // ----------------------------------------------------------------------------
 594
 595 wxMenuBarBase::wxMenuBarBase()
 596 {
 597     // not attached yet
 598     m_menuBarFrame = NULL;
 599 }
 600
 601 wxMenuBarBase::~wxMenuBarBase()
 602 {
 603     WX_CLEAR_LIST(wxMenuList, m_menus);
 604 }
 605
 606 // ----------------------------------------------------------------------------
 607 // wxMenuBar item access: the base class versions manage m_menus list, the
 608 // derived class should reflect the changes in the real menubar
 609 // ----------------------------------------------------------------------------
 610
 611 wxMenu *wxMenuBarBase::GetMenu(size_t pos) const
 612 {
 613     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 614     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::GetMenu()") );
 615
 616     return node->GetData();
 617 }
 618
 619 bool wxMenuBarBase::Append(wxMenu *menu, const wxString& WXUNUSED(title))
 620 {
 621     wxCHECK_MSG( menu, false, wxT("can't append NULL menu") );
 622
 623     m_menus.Append(menu);
 624     menu->Attach(this);
 625
 626     return true;
 627 }
 628
 629 bool wxMenuBarBase::Insert(size_t pos, wxMenu *menu,
 630                            const wxString& title)
 631 {
 632     if ( pos == m_menus.GetCount() )
 633     {
 634         return wxMenuBarBase::Append(menu, title);
 635     }
 636     else // not at the end
 637     {
 638         wxCHECK_MSG( menu, false, wxT("can't insert NULL menu") );
 639
 640         wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 641         wxCHECK_MSG( node, false, wxT("bad index in wxMenuBar::Insert()") );
 642
 643         m_menus.Insert(node, menu);
 644         menu->Attach(this);
 645
 646         return true;
 647     }
 648 }
 649
 650 wxMenu *wxMenuBarBase::Replace(size_t pos, wxMenu *menu,
 651                                const wxString& WXUNUSED(title))
 652 {
 653     wxCHECK_MSG( menu, NULL, wxT("can't insert NULL menu") );
 654
 655     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 656     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::Replace()") );
 657
 658     wxMenu *menuOld = node->GetData();
 659     node->SetData(menu);
 660
 661     menu->Attach(this);
 662     menuOld->Detach();
 663
 664     return menuOld;
 665 }
 666
 667 wxMenu *wxMenuBarBase::Remove(size_t pos)
 668 {
 669     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 670     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::Remove()") );
 671
 672     wxMenu *menu = node->GetData();
 673     m_menus.Erase(node);
 674     menu->Detach();
 675
 676     return menu;
 677 }
 678
 679 int wxMenuBarBase::FindMenu(const wxString& title) const
 680 {
 681     wxString label = wxMenuItem::GetLabelText(title);
 682
 683     size_t count = GetMenuCount();
 684     for ( size_t i = 0; i < count; i++ )
 685     {
 686         wxString title2 = GetMenuLabel(i);
 687         if ( (title2 == title) ||
 688              (wxMenuItem::GetLabelText(title2) == label) )
 689         {
 690             // found
 691             return (int)i;
 692         }
 693     }
 694
 695     return wxNOT_FOUND;
 696
 697 }
 698
 699 // ----------------------------------------------------------------------------
 700 // wxMenuBar attaching/detaching to/from the frame
 701 // ----------------------------------------------------------------------------
 702
 703 void wxMenuBarBase::Attach(wxFrame *frame)
 704 {
 705     wxASSERT_MSG( !IsAttached(), wxT("menubar already attached!") );
 706
 707     m_menuBarFrame = frame;
 708 }
 709
 710 void wxMenuBarBase::Detach()
 711 {
 712     wxASSERT_MSG( IsAttached(), wxT("detaching unattached menubar") );
 713
 714     m_menuBarFrame = NULL;
 715 }
 716
 717 // ----------------------------------------------------------------------------
 718 // wxMenuBar searching for items
 719 // ----------------------------------------------------------------------------
 720
 721 wxMenuItem *wxMenuBarBase::FindItem(int id, wxMenu **menu) const
 722 {
 723     if ( menu )
 724         *menu = NULL;
 725
 726     wxMenuItem *item = NULL;
 727     size_t count = GetMenuCount(), i;
 728     wxMenuList::const_iterator it;
 729     for ( i = 0, it = m_menus.begin(); !item && (i < count); i++, it++ )
 730     {
 731         item = (*it)->FindItem(id, menu);
 732     }
 733
 734     return item;
 735 }
 736
 737 int wxMenuBarBase::FindMenuItem(const wxString& menu, const wxString& item) const
 738 {
 739     wxString label = wxMenuItem::GetLabelText(menu);
 740
 741     int i = 0;
 742     wxMenuList::compatibility_iterator node;
 743     for ( node = m_menus.GetFirst(); node; node = node->GetNext(), i++ )
 744     {
 745         if ( label == wxMenuItem::GetLabelText(GetMenuLabel(i)) )
 746             return node->GetData()->FindItem(item);
 747     }
 748
 749     return wxNOT_FOUND;
 750 }
 751
 752 // ---------------------------------------------------------------------------
 753 // wxMenuBar functions forwarded to wxMenuItem
 754 // ---------------------------------------------------------------------------
 755
 756 void wxMenuBarBase::Enable(int id, bool enable)
 757 {
 758     wxMenuItem *item = FindItem(id);
 759
 760     wxCHECK_RET( item, wxT("attempt to enable an item which doesn't exist") );
 761
 762     item->Enable(enable);
 763 }
 764
 765 void wxMenuBarBase::Check(int id, bool check)
 766 {
 767     wxMenuItem *item = FindItem(id);
 768
 769     wxCHECK_RET( item, wxT("attempt to check an item which doesn't exist") );
 770     wxCHECK_RET( item->IsCheckable(), wxT("attempt to check an uncheckable item") );
 771
 772     item->Check(check);
 773 }
 774
 775 bool wxMenuBarBase::IsChecked(int id) const
 776 {
 777     wxMenuItem *item = FindItem(id);
 778
 779     wxCHECK_MSG( item, false, wxT("wxMenuBar::IsChecked(): no such item") );
 780
 781     return item->IsChecked();
 782 }
 783
 784 bool wxMenuBarBase::IsEnabled(int id) const
 785 {
 786     wxMenuItem *item = FindItem(id);
 787
 788     wxCHECK_MSG( item, false, wxT("wxMenuBar::IsEnabled(): no such item") );
 789
 790     return item->IsEnabled();
 791 }
 792
 793 void wxMenuBarBase::SetLabel(int id, const wxString& label)
 794 {
 795     wxMenuItem *item = FindItem(id);
 796
 797     wxCHECK_RET( item, wxT("wxMenuBar::SetLabel(): no such item") );
 798
 799     item->SetItemLabel(label);
 800 }
 801
 802 wxString wxMenuBarBase::GetLabel(int id) const
 803 {
 804     wxMenuItem *item = FindItem(id);
 805
 806     wxCHECK_MSG( item, wxEmptyString,
 807                  wxT("wxMenuBar::GetLabel(): no such item") );
 808
 809     return item->GetItemLabel();
 810 }
 811
 812 void wxMenuBarBase::SetHelpString(int id, const wxString& helpString)
 813 {
 814     wxMenuItem *item = FindItem(id);
 815
 816     wxCHECK_RET( item, wxT("wxMenuBar::SetHelpString(): no such item") );
 817
 818     item->SetHelp(helpString);
 819 }
 820
 821 wxString wxMenuBarBase::GetHelpString(int id) const
 822 {
 823     wxMenuItem *item = FindItem(id);
 824
 825     wxCHECK_MSG( item, wxEmptyString,
 826                  wxT("wxMenuBar::GetHelpString(): no such item") );
 827
 828     return item->GetHelp();
 829 }
 830
 831 void wxMenuBarBase::UpdateMenus()
 832 {
 833     wxEvtHandler* source;
 834     wxMenu* menu;
 835     int nCount = GetMenuCount();
 836     for (int n = 0; n < nCount; n++)
 837     {
 838         menu = GetMenu( n );
 839         if (menu != NULL)
 840         {
 841             source = menu->GetEventHandler();
 842             if (source != NULL)
 843                 menu->UpdateUI( source );
 844         }
 845     }
 846 }
 847
 848 #if WXWIN_COMPATIBILITY_2_8
 849 // get or change the label of the menu at given position
 850 void wxMenuBarBase::SetLabelTop(size_t pos, const wxString& label)
 851 {
 852     SetMenuLabel(pos, label);
 853 }
 854
 855 wxString wxMenuBarBase::GetLabelTop(size_t pos) const
 856 {
 857     return GetMenuLabelText(pos);
 858 }
 859 #endif
 860
 861 #endif // wxUSE_MENUS