src/common/menucmn.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/menucmn.cpp
   3 // Purpose:     wxMenu and wxMenuBar methods common to all ports
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     26.10.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_MENUS
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/intl.h"
  31     #include "wx/log.h"
  32     #include "wx/menu.h"
  33     #include "wx/frame.h"
  34 #endif
  35
  36 #include "wx/stockitem.h"
  37
  38 // ----------------------------------------------------------------------------
  39 // template lists
  40 // ----------------------------------------------------------------------------
  41
  42 #include "wx/listimpl.cpp"
  43
  44 WX_DEFINE_LIST(wxMenuList)
  45 WX_DEFINE_LIST(wxMenuItemList)
  46
  47 // ============================================================================
  48 // implementation
  49 // ============================================================================
  50
  51 // ----------------------------------------------------------------------------
  52 // wxMenuItemBase
  53 // ----------------------------------------------------------------------------
  54
  55 wxMenuItemBase::wxMenuItemBase(wxMenu *parentMenu,
  56                                int id,
  57                                const wxString& text,
  58                                const wxString& help,
  59                                wxItemKind kind,
  60                                wxMenu *subMenu)
  61 {
  62     switch ( id )
  63     {
  64         case wxID_ANY:
  65             m_id = wxWindow::NewControlId();
  66             break;
  67
  68         case wxID_SEPARATOR:
  69             m_id = wxID_SEPARATOR;
  70
  71             // there is a lot of existing code just doing Append(wxID_SEPARATOR)
  72             // and it makes sense to omit the following optional parameters,
  73             // including the kind one which doesn't default to wxITEM_SEPARATOR,
  74             // of course, so override it here
  75             kind = wxITEM_SEPARATOR;
  76             break;
  77
  78         case wxID_NONE:
  79             // (popup) menu titles in wxMSW use this ID to indicate that
  80             // it's not a real menu item, so we don't want the check below to
  81             // apply to it
  82             m_id = id;
  83             break;
  84
  85         default:
  86             // ids are limited to 16 bits under MSW so portable code shouldn't
  87             // use ids outside of this range (negative ids generated by wx are
  88             // fine though)
  89             wxASSERT_MSG( (id >= 0 && id < SHRT_MAX) ||
  90                             (id >= wxID_AUTO_LOWEST && id <= wxID_AUTO_HIGHEST),
  91                           wxS("invalid id value") );
  92             m_id = id;
  93     }
  94
  95     // notice that parentMenu can be NULL: the item can be attached to the menu
  96     // later with SetMenu()
  97
  98     m_parentMenu  = parentMenu;
  99     m_subMenu     = subMenu;
 100     m_isEnabled   = true;
 101     m_isChecked   = false;
 102     m_id          = id;
 103     m_kind        = kind;
 104
 105     SetItemLabel(text);
 106     SetHelp(help);
 107 }
 108
 109 wxMenuItemBase::~wxMenuItemBase()
 110 {
 111     delete m_subMenu;
 112 }
 113
 114 #if wxUSE_ACCEL
 115
 116 wxAcceleratorEntry *wxMenuItemBase::GetAccel() const
 117 {
 118     return wxAcceleratorEntry::Create(GetItemLabel());
 119 }
 120
 121 void wxMenuItemBase::SetAccel(wxAcceleratorEntry *accel)
 122 {
 123     wxString text = m_text.BeforeFirst(wxT('\t'));
 124     if ( accel )
 125     {
 126         text += wxT('\t');
 127         text += accel->ToString();
 128     }
 129
 130     SetItemLabel(text);
 131 }
 132
 133 #endif // wxUSE_ACCEL
 134
 135 void wxMenuItemBase::SetItemLabel(const wxString& str)
 136 {
 137     m_text = str;
 138
 139     if ( m_text.empty() && !IsSeparator() )
 140     {
 141         wxASSERT_MSG( wxIsStockID(GetId()),
 142                       wxT("A non-stock menu item with an empty label?") );
 143         m_text = wxGetStockLabel(GetId(), wxSTOCK_WITH_ACCELERATOR |
 144                                           wxSTOCK_WITH_MNEMONIC);
 145     }
 146 }
 147
 148 void wxMenuItemBase::SetHelp(const wxString& str)
 149 {
 150     m_help = str;
 151
 152     if ( m_help.empty() && !IsSeparator() && wxIsStockID(GetId()) )
 153     {
 154         // get a stock help string
 155         m_help = wxGetStockHelpString(GetId());
 156     }
 157 }
 158
 159 #ifndef __WXPM__
 160 wxString wxMenuItemBase::GetLabelText(const wxString& text)
 161 {
 162     return wxStripMenuCodes(text);
 163 }
 164 #endif
 165
 166 #if WXWIN_COMPATIBILITY_2_8
 167 wxString wxMenuItemBase::GetLabelFromText(const wxString& text)
 168 {
 169     return GetLabelText(text);
 170 }
 171 #endif
 172
 173 bool wxMenuBase::ms_locked = true;
 174
 175 // ----------------------------------------------------------------------------
 176 // wxMenu ctor and dtor
 177 // ----------------------------------------------------------------------------
 178
 179 void wxMenuBase::Init(long style)
 180 {
 181     m_menuBar = NULL;
 182     m_menuParent = NULL;
 183
 184     m_invokingWindow = NULL;
 185     m_style = style;
 186     m_clientData = NULL;
 187     m_eventHandler = this;
 188 }
 189
 190 wxMenuBase::~wxMenuBase()
 191 {
 192     WX_CLEAR_LIST(wxMenuItemList, m_items);
 193 }
 194
 195 // ----------------------------------------------------------------------------
 196 // wxMenu item adding/removing
 197 // ----------------------------------------------------------------------------
 198
 199 void wxMenuBase::AddSubMenu(wxMenu *submenu)
 200 {
 201     wxCHECK_RET( submenu, wxT("can't add a NULL submenu") );
 202
 203     submenu->SetParent((wxMenu *)this);
 204 }
 205
 206 wxMenuItem* wxMenuBase::DoAppend(wxMenuItem *item)
 207 {
 208     wxCHECK_MSG( item, NULL, wxT("invalid item in wxMenu::Append()") );
 209
 210     m_items.Append(item);
 211     item->SetMenu((wxMenu*)this);
 212     if ( item->IsSubMenu() )
 213     {
 214         AddSubMenu(item->GetSubMenu());
 215     }
 216
 217     return item;
 218 }
 219
 220 wxMenuItem* wxMenuBase::Insert(size_t pos, wxMenuItem *item)
 221 {
 222     wxCHECK_MSG( item, NULL, wxT("invalid item in wxMenu::Insert") );
 223
 224     if ( pos == GetMenuItemCount() )
 225     {
 226         return DoAppend(item);
 227     }
 228     else
 229     {
 230         wxCHECK_MSG( pos < GetMenuItemCount(), NULL,
 231                      wxT("invalid index in wxMenu::Insert") );
 232
 233         return DoInsert(pos, item);
 234     }
 235 }
 236
 237 wxMenuItem* wxMenuBase::DoInsert(size_t pos, wxMenuItem *item)
 238 {
 239     wxCHECK_MSG( item, NULL, wxT("invalid item in wxMenu::Insert()") );
 240
 241     wxMenuItemList::compatibility_iterator node = m_items.Item(pos);
 242     wxCHECK_MSG( node, NULL, wxT("invalid index in wxMenu::Insert()") );
 243
 244     m_items.Insert(node, item);
 245     item->SetMenu((wxMenu*)this);
 246     if ( item->IsSubMenu() )
 247     {
 248         AddSubMenu(item->GetSubMenu());
 249     }
 250
 251     return item;
 252 }
 253
 254 wxMenuItem *wxMenuBase::Remove(wxMenuItem *item)
 255 {
 256     wxCHECK_MSG( item, NULL, wxT("invalid item in wxMenu::Remove") );
 257
 258     return DoRemove(item);
 259 }
 260
 261 wxMenuItem *wxMenuBase::DoRemove(wxMenuItem *item)
 262 {
 263     wxMenuItemList::compatibility_iterator node = m_items.Find(item);
 264
 265     // if we get here, the item is valid or one of Remove() functions is broken
 266     wxCHECK_MSG( node, NULL, wxT("bug in wxMenu::Remove logic") );
 267
 268     // we detach the item, but we do delete the list node (i.e. don't call
 269     // DetachNode() here!)
 270     m_items.Erase(node);
 271
 272     // item isn't attached to anything any more
 273     item->SetMenu(NULL);
 274     wxMenu *submenu = item->GetSubMenu();
 275     if ( submenu )
 276     {
 277         submenu->SetParent(NULL);
 278         if ( submenu->IsAttached() )
 279             submenu->Detach();
 280     }
 281
 282     return item;
 283 }
 284
 285 bool wxMenuBase::Delete(wxMenuItem *item)
 286 {
 287     wxCHECK_MSG( item, false, wxT("invalid item in wxMenu::Delete") );
 288
 289     return DoDelete(item);
 290 }
 291
 292 bool wxMenuBase::DoDelete(wxMenuItem *item)
 293 {
 294     wxMenuItem *item2 = DoRemove(item);
 295     wxCHECK_MSG( item2, false, wxT("failed to delete menu item") );
 296
 297     // don't delete the submenu
 298     item2->SetSubMenu(NULL);
 299
 300     delete item2;
 301
 302     return true;
 303 }
 304
 305 bool wxMenuBase::Destroy(wxMenuItem *item)
 306 {
 307     wxCHECK_MSG( item, false, wxT("invalid item in wxMenu::Destroy") );
 308
 309     return DoDestroy(item);
 310 }
 311
 312 bool wxMenuBase::DoDestroy(wxMenuItem *item)
 313 {
 314     wxMenuItem *item2 = DoRemove(item);
 315     wxCHECK_MSG( item2, false, wxT("failed to delete menu item") );
 316
 317     delete item2;
 318
 319     return true;
 320 }
 321
 322 // ----------------------------------------------------------------------------
 323 // wxMenu searching for items
 324 // ----------------------------------------------------------------------------
 325
 326 // Finds the item id matching the given string, wxNOT_FOUND if not found.
 327 int wxMenuBase::FindItem(const wxString& text) const
 328 {
 329     wxString label = wxMenuItem::GetLabelText(text);
 330     for ( wxMenuItemList::compatibility_iterator node = m_items.GetFirst();
 331           node;
 332           node = node->GetNext() )
 333     {
 334         wxMenuItem *item = node->GetData();
 335         if ( item->IsSubMenu() )
 336         {
 337             int rc = item->GetSubMenu()->FindItem(label);
 338             if ( rc != wxNOT_FOUND )
 339                 return rc;
 340         }
 341
 342         // we execute this code for submenus as well to alllow finding them by
 343         // name just like the ordinary items
 344         if ( !item->IsSeparator() )
 345         {
 346             if ( item->GetItemLabelText() == label )
 347                 return item->GetId();
 348         }
 349     }
 350
 351     return wxNOT_FOUND;
 352 }
 353
 354 // recursive search for item by id
 355 wxMenuItem *wxMenuBase::FindItem(int itemId, wxMenu **itemMenu) const
 356 {
 357     if ( itemMenu )
 358         *itemMenu = NULL;
 359
 360     wxMenuItem *item = NULL;
 361     for ( wxMenuItemList::compatibility_iterator node = m_items.GetFirst();
 362           node && !item;
 363           node = node->GetNext() )
 364     {
 365         item = node->GetData();
 366
 367         if ( item->GetId() == itemId )
 368         {
 369             if ( itemMenu )
 370                 *itemMenu = (wxMenu *)this;
 371         }
 372         else if ( item->IsSubMenu() )
 373         {
 374             item = item->GetSubMenu()->FindItem(itemId, itemMenu);
 375         }
 376         else
 377         {
 378             // don't exit the loop
 379             item = NULL;
 380         }
 381     }
 382
 383     return item;
 384 }
 385
 386 // non recursive search
 387 wxMenuItem *wxMenuBase::FindChildItem(int id, size_t *ppos) const
 388 {
 389     wxMenuItem *item = NULL;
 390     wxMenuItemList::compatibility_iterator node = GetMenuItems().GetFirst();
 391
 392     size_t pos;
 393     for ( pos = 0; node; pos++ )
 394     {
 395         if ( node->GetData()->GetId() == id )
 396         {
 397             item = node->GetData();
 398
 399             break;
 400         }
 401
 402         node = node->GetNext();
 403     }
 404
 405     if ( ppos )
 406     {
 407         *ppos = item ? pos : (size_t)wxNOT_FOUND;
 408     }
 409
 410     return item;
 411 }
 412
 413 // find by position
 414 wxMenuItem* wxMenuBase::FindItemByPosition(size_t position) const
 415 {
 416     wxCHECK_MSG( position < m_items.GetCount(), NULL,
 417                  wxT("wxMenu::FindItemByPosition(): invalid menu index") );
 418
 419     return m_items.Item( position )->GetData();
 420 }
 421
 422 // ----------------------------------------------------------------------------
 423 // wxMenu helpers used by derived classes
 424 // ----------------------------------------------------------------------------
 425
 426 // Update a menu and all submenus recursively. source is the object that has
 427 // the update event handlers defined for it. If NULL, the menu or associated
 428 // window will be used.
 429 void wxMenuBase::UpdateUI(wxEvtHandler* source)
 430 {
 431     if (GetInvokingWindow())
 432     {
 433         // Don't update menus if the parent
 434         // frame is about to get deleted
 435         wxWindow *tlw = wxGetTopLevelParent( GetInvokingWindow() );
 436         if (tlw && wxPendingDelete.Member(tlw))
 437             return;
 438     }
 439
 440     if ( !source && GetInvokingWindow() )
 441         source = GetInvokingWindow()->GetEventHandler();
 442     if ( !source )
 443         source = GetEventHandler();
 444     if ( !source )
 445         source = this;
 446
 447     wxMenuItemList::compatibility_iterator  node = GetMenuItems().GetFirst();
 448     while ( node )
 449     {
 450         wxMenuItem* item = node->GetData();
 451         if ( !item->IsSeparator() )
 452         {
 453             wxWindowID id = item->GetId();
 454             wxUpdateUIEvent event(id);
 455             event.SetEventObject( source );
 456
 457             if ( source->ProcessEvent(event) )
 458             {
 459                 // if anything changed, update the changed attribute
 460                 if (event.GetSetText())
 461                     SetLabel(id, event.GetText());
 462                 if (event.GetSetChecked())
 463                     Check(id, event.GetChecked());
 464                 if (event.GetSetEnabled())
 465                     Enable(id, event.GetEnabled());
 466             }
 467
 468             // recurse to the submenus
 469             if ( item->GetSubMenu() )
 470                 item->GetSubMenu()->UpdateUI(source);
 471         }
 472         //else: item is a separator (which doesn't process update UI events)
 473
 474         node = node->GetNext();
 475     }
 476 }
 477
 478 bool wxMenuBase::SendEvent(int id, int checked)
 479 {
 480     wxCommandEvent event(wxEVT_COMMAND_MENU_SELECTED, id);
 481     event.SetEventObject(this);
 482     event.SetInt(checked);
 483
 484     bool processed = false;
 485
 486     // Try the menu's event handler first
 487     wxEvtHandler *handler = GetEventHandler();
 488     if ( handler )
 489         processed = handler->SafelyProcessEvent(event);
 490
 491     // Try the window the menu was popped up from or its menu bar belongs to
 492     if ( !processed )
 493     {
 494         wxWindow * const win = GetWindow();
 495         if ( win )
 496             processed = win->HandleWindowEvent(event);
 497     }
 498
 499     return processed;
 500 }
 501
 502 // ----------------------------------------------------------------------------
 503 // wxMenu attaching/detaching to/from menu bar
 504 // ----------------------------------------------------------------------------
 505
 506 wxMenuBar* wxMenuBase::GetMenuBar() const
 507 {
 508     if(GetParent())
 509         return GetParent()->GetMenuBar();
 510     return m_menuBar;
 511 }
 512
 513 void wxMenuBase::Attach(wxMenuBarBase *menubar)
 514 {
 515     // use Detach() instead!
 516     wxASSERT_MSG( menubar, wxT("menu can't be attached to NULL menubar") );
 517
 518     // use IsAttached() to prevent this from happening
 519     wxASSERT_MSG( !m_menuBar, wxT("attaching menu twice?") );
 520
 521     m_menuBar = (wxMenuBar *)menubar;
 522 }
 523
 524 void wxMenuBase::Detach()
 525 {
 526     // use IsAttached() to prevent this from happening
 527     wxASSERT_MSG( m_menuBar, wxT("detaching unattached menu?") );
 528
 529     m_menuBar = NULL;
 530 }
 531
 532 // ----------------------------------------------------------------------------
 533 // wxMenu invoking window handling
 534 // ----------------------------------------------------------------------------
 535
 536 void wxMenuBase::SetInvokingWindow(wxWindow *win)
 537 {
 538     wxASSERT_MSG( !GetParent(),
 539                     "should only be called for top level popup menus" );
 540     wxASSERT_MSG( !IsAttached(),
 541                     "menus attached to menu bar can't have invoking window" );
 542
 543     m_invokingWindow = win;
 544 }
 545
 546 wxWindow *wxMenuBase::GetWindow() const
 547 {
 548     // only the top level menus have non-NULL invoking window or a pointer to
 549     // the menu bar so recurse upwards until we find it
 550     const wxMenuBase *menu = this;
 551     while ( menu->GetParent() )
 552     {
 553         menu = menu->GetParent();
 554     }
 555
 556     return menu->GetMenuBar() ? menu->GetMenuBar()->GetFrame()
 557                               : menu->GetInvokingWindow();
 558 }
 559
 560 // ----------------------------------------------------------------------------
 561 // wxMenu functions forwarded to wxMenuItem
 562 // ----------------------------------------------------------------------------
 563
 564 void wxMenuBase::Enable( int id, bool enable )
 565 {
 566     wxMenuItem *item = FindItem(id);
 567
 568     wxCHECK_RET( item, wxT("wxMenu::Enable: no such item") );
 569
 570     item->Enable(enable);
 571 }
 572
 573 bool wxMenuBase::IsEnabled( int id ) const
 574 {
 575     wxMenuItem *item = FindItem(id);
 576
 577     wxCHECK_MSG( item, false, wxT("wxMenu::IsEnabled: no such item") );
 578
 579     return item->IsEnabled();
 580 }
 581
 582 void wxMenuBase::Check( int id, bool enable )
 583 {
 584     wxMenuItem *item = FindItem(id);
 585
 586     wxCHECK_RET( item, wxT("wxMenu::Check: no such item") );
 587
 588     item->Check(enable);
 589 }
 590
 591 bool wxMenuBase::IsChecked( int id ) const
 592 {
 593     wxMenuItem *item = FindItem(id);
 594
 595     wxCHECK_MSG( item, false, wxT("wxMenu::IsChecked: no such item") );
 596
 597     return item->IsChecked();
 598 }
 599
 600 void wxMenuBase::SetLabel( int id, const wxString &label )
 601 {
 602     wxMenuItem *item = FindItem(id);
 603
 604     wxCHECK_RET( item, wxT("wxMenu::SetLabel: no such item") );
 605
 606     item->SetItemLabel(label);
 607 }
 608
 609 wxString wxMenuBase::GetLabel( int id ) const
 610 {
 611     wxMenuItem *item = FindItem(id);
 612
 613     wxCHECK_MSG( item, wxEmptyString, wxT("wxMenu::GetLabel: no such item") );
 614
 615     return item->GetItemLabel();
 616 }
 617
 618 void wxMenuBase::SetHelpString( int id, const wxString& helpString )
 619 {
 620     wxMenuItem *item = FindItem(id);
 621
 622     wxCHECK_RET( item, wxT("wxMenu::SetHelpString: no such item") );
 623
 624     item->SetHelp( helpString );
 625 }
 626
 627 wxString wxMenuBase::GetHelpString( int id ) const
 628 {
 629     wxMenuItem *item = FindItem(id);
 630
 631     wxCHECK_MSG( item, wxEmptyString, wxT("wxMenu::GetHelpString: no such item") );
 632
 633     return item->GetHelp();
 634 }
 635
 636 // ----------------------------------------------------------------------------
 637 // wxMenuBarBase ctor and dtor
 638 // ----------------------------------------------------------------------------
 639
 640 wxMenuBarBase::wxMenuBarBase()
 641 {
 642     // not attached yet
 643     m_menuBarFrame = NULL;
 644 }
 645
 646 wxMenuBarBase::~wxMenuBarBase()
 647 {
 648     WX_CLEAR_LIST(wxMenuList, m_menus);
 649 }
 650
 651 // ----------------------------------------------------------------------------
 652 // wxMenuBar item access: the base class versions manage m_menus list, the
 653 // derived class should reflect the changes in the real menubar
 654 // ----------------------------------------------------------------------------
 655
 656 wxMenu *wxMenuBarBase::GetMenu(size_t pos) const
 657 {
 658     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 659     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::GetMenu()") );
 660
 661     return node->GetData();
 662 }
 663
 664 bool wxMenuBarBase::Append(wxMenu *menu, const wxString& title)
 665 {
 666     wxCHECK_MSG( menu, false, wxT("can't append NULL menu") );
 667     wxCHECK_MSG( !title.empty(), false, wxT("can't append menu with empty title") );
 668
 669     m_menus.Append(menu);
 670     menu->Attach(this);
 671
 672     return true;
 673 }
 674
 675 bool wxMenuBarBase::Insert(size_t pos, wxMenu *menu,
 676                            const wxString& title)
 677 {
 678     if ( pos == m_menus.GetCount() )
 679     {
 680         return wxMenuBarBase::Append(menu, title);
 681     }
 682     else // not at the end
 683     {
 684         wxCHECK_MSG( menu, false, wxT("can't insert NULL menu") );
 685
 686         wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 687         wxCHECK_MSG( node, false, wxT("bad index in wxMenuBar::Insert()") );
 688
 689         m_menus.Insert(node, menu);
 690         menu->Attach(this);
 691
 692         return true;
 693     }
 694 }
 695
 696 wxMenu *wxMenuBarBase::Replace(size_t pos, wxMenu *menu,
 697                                const wxString& WXUNUSED(title))
 698 {
 699     wxCHECK_MSG( menu, NULL, wxT("can't insert NULL menu") );
 700
 701     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 702     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::Replace()") );
 703
 704     wxMenu *menuOld = node->GetData();
 705     node->SetData(menu);
 706
 707     menu->Attach(this);
 708     menuOld->Detach();
 709
 710     return menuOld;
 711 }
 712
 713 wxMenu *wxMenuBarBase::Remove(size_t pos)
 714 {
 715     wxMenuList::compatibility_iterator node = m_menus.Item(pos);
 716     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::Remove()") );
 717
 718     wxMenu *menu = node->GetData();
 719     m_menus.Erase(node);
 720     menu->Detach();
 721
 722     return menu;
 723 }
 724
 725 int wxMenuBarBase::FindMenu(const wxString& title) const
 726 {
 727     wxString label = wxMenuItem::GetLabelText(title);
 728
 729     size_t count = GetMenuCount();
 730     for ( size_t i = 0; i < count; i++ )
 731     {
 732         wxString title2 = GetMenuLabel(i);
 733         if ( (title2 == title) ||
 734              (wxMenuItem::GetLabelText(title2) == label) )
 735         {
 736             // found
 737             return (int)i;
 738         }
 739     }
 740
 741     return wxNOT_FOUND;
 742
 743 }
 744
 745 // ----------------------------------------------------------------------------
 746 // wxMenuBar attaching/detaching to/from the frame
 747 // ----------------------------------------------------------------------------
 748
 749 void wxMenuBarBase::Attach(wxFrame *frame)
 750 {
 751     wxASSERT_MSG( !IsAttached(), wxT("menubar already attached!") );
 752
 753     m_menuBarFrame = frame;
 754 }
 755
 756 void wxMenuBarBase::Detach()
 757 {
 758     wxASSERT_MSG( IsAttached(), wxT("detaching unattached menubar") );
 759
 760     m_menuBarFrame = NULL;
 761 }
 762
 763 // ----------------------------------------------------------------------------
 764 // wxMenuBar searching for items
 765 // ----------------------------------------------------------------------------
 766
 767 wxMenuItem *wxMenuBarBase::FindItem(int id, wxMenu **menu) const
 768 {
 769     if ( menu )
 770         *menu = NULL;
 771
 772     wxMenuItem *item = NULL;
 773     size_t count = GetMenuCount(), i;
 774     wxMenuList::const_iterator it;
 775     for ( i = 0, it = m_menus.begin(); !item && (i < count); i++, it++ )
 776     {
 777         item = (*it)->FindItem(id, menu);
 778     }
 779
 780     return item;
 781 }
 782
 783 int wxMenuBarBase::FindMenuItem(const wxString& menu, const wxString& item) const
 784 {
 785     wxString label = wxMenuItem::GetLabelText(menu);
 786
 787     int i = 0;
 788     wxMenuList::compatibility_iterator node;
 789     for ( node = m_menus.GetFirst(); node; node = node->GetNext(), i++ )
 790     {
 791         if ( label == wxMenuItem::GetLabelText(GetMenuLabel(i)) )
 792             return node->GetData()->FindItem(item);
 793     }
 794
 795     return wxNOT_FOUND;
 796 }
 797
 798 // ---------------------------------------------------------------------------
 799 // wxMenuBar functions forwarded to wxMenuItem
 800 // ---------------------------------------------------------------------------
 801
 802 void wxMenuBarBase::Enable(int id, bool enable)
 803 {
 804     wxMenuItem *item = FindItem(id);
 805
 806     wxCHECK_RET( item, wxT("attempt to enable an item which doesn't exist") );
 807
 808     item->Enable(enable);
 809 }
 810
 811 void wxMenuBarBase::Check(int id, bool check)
 812 {
 813     wxMenuItem *item = FindItem(id);
 814
 815     wxCHECK_RET( item, wxT("attempt to check an item which doesn't exist") );
 816     wxCHECK_RET( item->IsCheckable(), wxT("attempt to check an uncheckable item") );
 817
 818     item->Check(check);
 819 }
 820
 821 bool wxMenuBarBase::IsChecked(int id) const
 822 {
 823     wxMenuItem *item = FindItem(id);
 824
 825     wxCHECK_MSG( item, false, wxT("wxMenuBar::IsChecked(): no such item") );
 826
 827     return item->IsChecked();
 828 }
 829
 830 bool wxMenuBarBase::IsEnabled(int id) const
 831 {
 832     wxMenuItem *item = FindItem(id);
 833
 834     wxCHECK_MSG( item, false, wxT("wxMenuBar::IsEnabled(): no such item") );
 835
 836     return item->IsEnabled();
 837 }
 838
 839 void wxMenuBarBase::SetLabel(int id, const wxString& label)
 840 {
 841     wxMenuItem *item = FindItem(id);
 842
 843     wxCHECK_RET( item, wxT("wxMenuBar::SetLabel(): no such item") );
 844
 845     item->SetItemLabel(label);
 846 }
 847
 848 wxString wxMenuBarBase::GetLabel(int id) const
 849 {
 850     wxMenuItem *item = FindItem(id);
 851
 852     wxCHECK_MSG( item, wxEmptyString,
 853                  wxT("wxMenuBar::GetLabel(): no such item") );
 854
 855     return item->GetItemLabel();
 856 }
 857
 858 void wxMenuBarBase::SetHelpString(int id, const wxString& helpString)
 859 {
 860     wxMenuItem *item = FindItem(id);
 861
 862     wxCHECK_RET( item, wxT("wxMenuBar::SetHelpString(): no such item") );
 863
 864     item->SetHelp(helpString);
 865 }
 866
 867 wxString wxMenuBarBase::GetHelpString(int id) const
 868 {
 869     wxMenuItem *item = FindItem(id);
 870
 871     wxCHECK_MSG( item, wxEmptyString,
 872                  wxT("wxMenuBar::GetHelpString(): no such item") );
 873
 874     return item->GetHelp();
 875 }
 876
 877 void wxMenuBarBase::UpdateMenus()
 878 {
 879     wxEvtHandler* source;
 880     wxMenu* menu;
 881     int nCount = GetMenuCount();
 882     for (int n = 0; n < nCount; n++)
 883     {
 884         menu = GetMenu( n );
 885         if (menu != NULL)
 886         {
 887             source = menu->GetEventHandler();
 888             if (source != NULL)
 889                 menu->UpdateUI( source );
 890         }
 891     }
 892 }
 893
 894 #if WXWIN_COMPATIBILITY_2_8
 895 // get or change the label of the menu at given position
 896 void wxMenuBarBase::SetLabelTop(size_t pos, const wxString& label)
 897 {
 898     SetMenuLabel(pos, label);
 899 }
 900
 901 wxString wxMenuBarBase::GetLabelTop(size_t pos) const
 902 {
 903     return GetMenuLabelText(pos);
 904 }
 905 #endif
 906
 907 #endif // wxUSE_MENUS