src/common/menucmn.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        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) wxWindows team
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "menubase.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_MENUS
  32
  33 #include <ctype.h>
  34
  35 #ifndef WX_PRECOMP
  36     #include "wx/intl.h"
  37     #include "wx/log.h"
  38     #include "wx/menu.h"
  39 #endif
  40
  41 // ----------------------------------------------------------------------------
  42 // template lists
  43 // ----------------------------------------------------------------------------
  44
  45 #include "wx/listimpl.cpp"
  46
  47 WX_DEFINE_LIST(wxMenuList);
  48 WX_DEFINE_LIST(wxMenuItemList);
  49
  50 // ============================================================================
  51 // implementation
  52 // ============================================================================
  53
  54 // ----------------------------------------------------------------------------
  55 // wxMenuItem
  56 // ----------------------------------------------------------------------------
  57
  58 wxMenuItemBase::~wxMenuItemBase()
  59 {
  60     delete m_subMenu;
  61 }
  62
  63 #if wxUSE_ACCEL
  64
  65 // return wxAcceleratorEntry for the given menu string or NULL if none
  66 // specified
  67 wxAcceleratorEntry *wxGetAccelFromString(const wxString& label)
  68 {
  69     // check for accelerators: they are given after '\t'
  70     int posTab = label.Find(wxT('\t'));
  71     if ( posTab != wxNOT_FOUND ) {
  72         // parse the accelerator string
  73         int keyCode = 0;
  74         int accelFlags = wxACCEL_NORMAL;
  75         wxString current;
  76         for ( size_t n = (size_t)posTab + 1; n < label.Len(); n++ ) {
  77             if ( (label[n] == '+') || (label[n] == '-') ) {
  78                 if ( current == _("ctrl") )
  79                     accelFlags |= wxACCEL_CTRL;
  80                 else if ( current == _("alt") )
  81                     accelFlags |= wxACCEL_ALT;
  82                 else if ( current == _("shift") )
  83                     accelFlags |= wxACCEL_SHIFT;
  84                 else {
  85                     // we may have "Ctrl-+", for example, but we still want to
  86                     // catch typos like "Crtl-A" so only give the warning if we
  87                     // have something before the current '+' or '-', else take
  88                     // it as a literal symbol
  89                     if ( current.empty() )
  90                     {
  91                         current += label[n];
  92
  93                         // skip clearing it below
  94                         continue;
  95                     }
  96                     else
  97                     {
  98                         wxLogDebug(wxT("Unknown accel modifier: '%s'"),
  99                                    current.c_str());
 100                     }
 101                 }
 102
 103                 current.clear();
 104             }
 105             else {
 106                 current += wxTolower(label[n]);
 107             }
 108         }
 109
 110         if ( current.IsEmpty() ) {
 111             wxLogDebug(wxT("No accel key found, accel string ignored."));
 112         }
 113         else {
 114             if ( current.Len() == 1 ) {
 115                 // it's a letter
 116                 keyCode = wxToupper(current[0U]);
 117             }
 118             else {
 119                 // is it a function key?
 120                 if ( current[0U] == 'f' && isdigit(current[1U]) &&
 121                      (current.Len() == 2 ||
 122                      (current.Len() == 3 && isdigit(current[2U]))) ) {
 123                     int n;
 124                     wxSscanf(current.c_str() + 1, wxT("%d"), &n);
 125
 126                     keyCode = WXK_F1 + n - 1;
 127                 }
 128                 else {
 129                     // several special cases
 130                     current.MakeUpper();
 131                     if ( current == wxT("DEL") ) {
 132                         keyCode = WXK_DELETE;
 133                     }
 134                     else if ( current == wxT("DELETE") ) {
 135                         keyCode = WXK_DELETE;
 136                     }
 137                     else if ( current == wxT("INS") ) {
 138                         keyCode = WXK_INSERT;
 139                     }
 140                     else if ( current == wxT("INSERT") ) {
 141                         keyCode = WXK_INSERT;
 142                     }
 143 #if 0
 144                     else if ( current == wxT("PGUP") ) {
 145                         keyCode = VK_PRIOR;
 146                     }
 147                     else if ( current == wxT("PGDN") ) {
 148                         keyCode = VK_NEXT;
 149                     }
 150 #endif
 151                     else
 152                     {
 153                         wxLogDebug(wxT("Unrecognized accel key '%s', accel string ignored."),
 154                                    current.c_str());
 155                     }
 156                 }
 157             }
 158         }
 159
 160         if ( keyCode ) {
 161             // we do have something
 162             return new wxAcceleratorEntry(accelFlags, keyCode);
 163         }
 164     }
 165
 166     return (wxAcceleratorEntry *)NULL;
 167 }
 168
 169 wxAcceleratorEntry *wxMenuItemBase::GetAccel() const
 170 {
 171     return wxGetAccelFromString(GetText());
 172 }
 173
 174 void wxMenuItemBase::SetAccel(wxAcceleratorEntry *accel)
 175 {
 176     wxString text = m_text.BeforeFirst(wxT('\t'));
 177     if ( accel )
 178     {
 179         text += wxT('\t');
 180
 181         int flags = accel->GetFlags();
 182         if ( flags & wxACCEL_ALT )
 183             text += wxT("Alt-");
 184         if ( flags & wxACCEL_CTRL )
 185             text += wxT("Ctrl-");
 186         if ( flags & wxACCEL_SHIFT )
 187             text += wxT("Shift-");
 188
 189         int code = accel->GetKeyCode();
 190         switch ( code )
 191         {
 192             case WXK_F1:
 193             case WXK_F2:
 194             case WXK_F3:
 195             case WXK_F4:
 196             case WXK_F5:
 197             case WXK_F6:
 198             case WXK_F7:
 199             case WXK_F8:
 200             case WXK_F9:
 201             case WXK_F10:
 202             case WXK_F11:
 203             case WXK_F12:
 204                 text << wxT('F') << code - WXK_F1 + 1;
 205                 break;
 206
 207             // if there are any other keys wxGetAccelFromString() may return,
 208             // we should process them here
 209
 210             default:
 211                 if ( wxIsalnum(code) )
 212                 {
 213                     text << (wxChar)code;
 214
 215                     break;
 216                 }
 217
 218                 wxFAIL_MSG( wxT("unknown keyboard accel") );
 219         }
 220     }
 221
 222     SetText(text);
 223 }
 224
 225 #endif // wxUSE_ACCEL
 226
 227 // ----------------------------------------------------------------------------
 228 // wxMenu ctor and dtor
 229 // ----------------------------------------------------------------------------
 230
 231 void wxMenuBase::Init(long style)
 232 {
 233     m_items.DeleteContents(TRUE);
 234
 235     m_menuBar = (wxMenuBar *)NULL;
 236     m_menuParent = (wxMenu *)NULL;
 237
 238     m_invokingWindow = (wxWindow *)NULL;
 239     m_style = style;
 240     m_clientData = (void *)NULL;
 241     m_eventHandler = this;
 242
 243 #if wxUSE_MENU_CALLBACK
 244     m_callback = (wxFunction) NULL;
 245 #endif // wxUSE_MENU_CALLBACK
 246 }
 247
 248 wxMenuBase::~wxMenuBase()
 249 {
 250     // nothing to do, wxMenuItemList dtor will delete the menu items.
 251
 252     // Actually, in GTK, the submenus have to get deleted first.
 253 }
 254
 255 // ----------------------------------------------------------------------------
 256 // wxMenu item adding/removing
 257 // ----------------------------------------------------------------------------
 258
 259 void wxMenuBase::AddSubMenu(wxMenu *submenu)
 260 {
 261     wxCHECK_RET( submenu, _T("can't add a NULL submenu") );
 262
 263     if ( m_menuBar )
 264     {
 265         submenu->Attach(m_menuBar);
 266     }
 267
 268     submenu->SetParent((wxMenu *)this);
 269 }
 270
 271 bool wxMenuBase::DoAppend(wxMenuItem *item)
 272 {
 273     wxCHECK_MSG( item, FALSE, wxT("invalid item in wxMenu::Append()") );
 274
 275     m_items.Append(item);
 276     if ( item->IsSubMenu() )
 277     {
 278         AddSubMenu(item->GetSubMenu());
 279     }
 280
 281     return TRUE;
 282 }
 283
 284 bool wxMenuBase::Insert(size_t pos, wxMenuItem *item)
 285 {
 286     wxCHECK_MSG( item, FALSE, wxT("invalid item in wxMenu::Insert") );
 287
 288     if ( pos == GetMenuItemCount() )
 289     {
 290         return DoAppend(item);
 291     }
 292     else
 293     {
 294         wxCHECK_MSG( pos < GetMenuItemCount(), FALSE,
 295                      wxT("invalid index in wxMenu::Insert") );
 296
 297         return DoInsert(pos, item);
 298     }
 299 }
 300
 301 bool wxMenuBase::DoInsert(size_t pos, wxMenuItem *item)
 302 {
 303     wxCHECK_MSG( item, FALSE, wxT("invalid item in wxMenu::Insert()") );
 304
 305     wxMenuItemList::Node *node = m_items.Item(pos);
 306     wxCHECK_MSG( node, FALSE, wxT("invalid index in wxMenu::Insert()") );
 307
 308     m_items.Insert(node, item);
 309     if ( item->IsSubMenu() )
 310     {
 311         AddSubMenu(item->GetSubMenu());
 312     }
 313
 314     return TRUE;
 315 }
 316
 317 wxMenuItem *wxMenuBase::Remove(wxMenuItem *item)
 318 {
 319     wxCHECK_MSG( item, NULL, wxT("invalid item in wxMenu::Remove") );
 320
 321     return DoRemove(item);
 322 }
 323
 324 wxMenuItem *wxMenuBase::DoRemove(wxMenuItem *item)
 325 {
 326     wxMenuItemList::Node *node = m_items.Find(item);
 327
 328     // if we get here, the item is valid or one of Remove() functions is broken
 329     wxCHECK_MSG( node, NULL, wxT("bug in wxMenu::Remove logic") );
 330
 331     // we detach the item, but we do delete the list node (i.e. don't call
 332     // DetachNode() here!)
 333     node->SetData((wxMenuItem *)NULL);  // to prevent it from deleting the item
 334     m_items.DeleteNode(node);
 335
 336     // item isn't attached to anything any more
 337     wxMenu *submenu = item->GetSubMenu();
 338     if ( submenu )
 339     {
 340         submenu->SetParent((wxMenu *)NULL);
 341     }
 342
 343     return item;
 344 }
 345
 346 bool wxMenuBase::Delete(wxMenuItem *item)
 347 {
 348     wxCHECK_MSG( item, FALSE, wxT("invalid item in wxMenu::Delete") );
 349
 350     return DoDelete(item);
 351 }
 352
 353 bool wxMenuBase::DoDelete(wxMenuItem *item)
 354 {
 355     wxMenuItem *item2 = DoRemove(item);
 356     wxCHECK_MSG( item2, FALSE, wxT("failed to delete menu item") );
 357
 358     // don't delete the submenu
 359     item2->SetSubMenu((wxMenu *)NULL);
 360
 361     delete item2;
 362
 363     return TRUE;
 364 }
 365
 366 bool wxMenuBase::Destroy(wxMenuItem *item)
 367 {
 368     wxCHECK_MSG( item, FALSE, wxT("invalid item in wxMenu::Destroy") );
 369
 370     return DoDestroy(item);
 371 }
 372
 373 bool wxMenuBase::DoDestroy(wxMenuItem *item)
 374 {
 375     wxMenuItem *item2 = DoRemove(item);
 376     wxCHECK_MSG( item2, FALSE, wxT("failed to delete menu item") );
 377
 378     delete item2;
 379
 380     return TRUE;
 381 }
 382
 383 // ----------------------------------------------------------------------------
 384 // wxMenu searching for items
 385 // ----------------------------------------------------------------------------
 386
 387 // Finds the item id matching the given string, -1 if not found.
 388 int wxMenuBase::FindItem(const wxString& text) const
 389 {
 390     wxString label = wxMenuItem::GetLabelFromText(text);
 391     for ( wxMenuItemList::Node *node = m_items.GetFirst();
 392           node;
 393           node = node->GetNext() )
 394     {
 395         wxMenuItem *item = node->GetData();
 396         if ( item->IsSubMenu() )
 397         {
 398             int rc = item->GetSubMenu()->FindItem(label);
 399             if ( rc != wxNOT_FOUND )
 400                 return rc;
 401         }
 402
 403         // we execute this code for submenus as well to alllow finding them by
 404         // name just like the ordinary items
 405         if ( !item->IsSeparator() )
 406         {
 407             if ( item->GetLabel() == label )
 408                 return item->GetId();
 409         }
 410     }
 411
 412     return wxNOT_FOUND;
 413 }
 414
 415 // recursive search for item by id
 416 wxMenuItem *wxMenuBase::FindItem(int itemId, wxMenu **itemMenu) const
 417 {
 418     if ( itemMenu )
 419         *itemMenu = NULL;
 420
 421     wxMenuItem *item = NULL;
 422     for ( wxMenuItemList::Node *node = m_items.GetFirst();
 423           node && !item;
 424           node = node->GetNext() )
 425     {
 426         item = node->GetData();
 427
 428         if ( item->GetId() == itemId )
 429         {
 430             if ( itemMenu )
 431                 *itemMenu = (wxMenu *)this;
 432         }
 433         else if ( item->IsSubMenu() )
 434         {
 435             item = item->GetSubMenu()->FindItem(itemId, itemMenu);
 436         }
 437         else
 438         {
 439             // don't exit the loop
 440             item = NULL;
 441         }
 442     }
 443
 444     return item;
 445 }
 446
 447 // non recursive search
 448 wxMenuItem *wxMenuBase::FindChildItem(int id, size_t *ppos) const
 449 {
 450     wxMenuItem *item = (wxMenuItem *)NULL;
 451     wxMenuItemList::Node *node = GetMenuItems().GetFirst();
 452
 453     size_t pos;
 454     for ( pos = 0; node; pos++ )
 455     {
 456         if ( node->GetData()->GetId() == id )
 457         {
 458             item = node->GetData();
 459
 460             break;
 461         }
 462
 463         node = node->GetNext();
 464     }
 465
 466     if ( ppos )
 467     {
 468         *ppos = item ? pos : (size_t)wxNOT_FOUND;
 469     }
 470
 471     return item;
 472 }
 473
 474 // ----------------------------------------------------------------------------
 475 // wxMenu helpers used by derived classes
 476 // ----------------------------------------------------------------------------
 477
 478 // Update a menu and all submenus recursively. source is the object that has
 479 // the update event handlers defined for it. If NULL, the menu or associated
 480 // window will be used.
 481 void wxMenuBase::UpdateUI(wxEvtHandler* source)
 482 {
 483     if ( !source && GetInvokingWindow() )
 484         source = GetInvokingWindow()->GetEventHandler();
 485     if ( !source )
 486         source = GetEventHandler();
 487     if ( !source )
 488         source = this;
 489
 490     wxMenuItemList::Node* node = GetMenuItems().GetFirst();
 491     while ( node )
 492     {
 493         wxMenuItem* item = node->GetData();
 494         if ( !item->IsSeparator() )
 495         {
 496             wxWindowID id = item->GetId();
 497             wxUpdateUIEvent event(id);
 498             event.SetEventObject( source );
 499
 500             if ( source->ProcessEvent(event) )
 501             {
 502                 // if anything changed, update the chanegd attribute
 503                 if (event.GetSetText())
 504                     SetLabel(id, event.GetText());
 505                 if (event.GetSetChecked())
 506                     Check(id, event.GetChecked());
 507                 if (event.GetSetEnabled())
 508                     Enable(id, event.GetEnabled());
 509             }
 510
 511             // recurse to the submenus
 512             if ( item->GetSubMenu() )
 513                 item->GetSubMenu()->UpdateUI(source);
 514         }
 515         //else: item is a separator (which don't process update UI events)
 516
 517         node = node->GetNext();
 518     }
 519 }
 520
 521 bool wxMenuBase::SendEvent(int id, int checked)
 522 {
 523     wxCommandEvent event(wxEVT_COMMAND_MENU_SELECTED, id);
 524     event.SetEventObject(this);
 525     event.SetInt(checked);
 526
 527     bool processed = FALSE;
 528
 529 #if wxUSE_MENU_CALLBACK
 530     // Try a callback
 531     if (m_callback)
 532     {
 533         (void)(*(m_callback))(*this, event);
 534         processed = TRUE;
 535     }
 536 #endif // wxUSE_MENU_CALLBACK
 537
 538     // Try the menu's event handler
 539     if ( !processed )
 540     {
 541         wxEvtHandler *handler = GetEventHandler();
 542         if ( handler )
 543             processed = handler->ProcessEvent(event);
 544     }
 545
 546     // Try the window the menu was popped up from (and up through the
 547     // hierarchy)
 548     if ( !processed )
 549     {
 550         const wxMenuBase *menu = this;
 551         while ( menu )
 552         {
 553             wxWindow *win = menu->GetInvokingWindow();
 554             if ( win )
 555             {
 556                 processed = win->GetEventHandler()->ProcessEvent(event);
 557                 break;
 558             }
 559
 560             menu = menu->GetParent();
 561         }
 562     }
 563
 564     return processed;
 565 }
 566
 567 // ----------------------------------------------------------------------------
 568 // wxMenu attaching/detaching to/from menu bar
 569 // ----------------------------------------------------------------------------
 570
 571 void wxMenuBase::Attach(wxMenuBarBase *menubar)
 572 {
 573     // use Detach() instead!
 574     wxASSERT_MSG( menubar, _T("menu can't be attached to NULL menubar") );
 575
 576     // use IsAttached() to prevent this from happening
 577     wxASSERT_MSG( !m_menuBar, _T("attaching menu twice?") );
 578
 579     m_menuBar = (wxMenuBar *)menubar;
 580 }
 581
 582 void wxMenuBase::Detach()
 583 {
 584     // use IsAttached() to prevent this from happening
 585     wxASSERT_MSG( m_menuBar, _T("detaching unattached menu?") );
 586
 587     m_menuBar = NULL;
 588 }
 589
 590 // ----------------------------------------------------------------------------
 591 // wxMenu functions forwarded to wxMenuItem
 592 // ----------------------------------------------------------------------------
 593
 594 void wxMenuBase::Enable( int id, bool enable )
 595 {
 596     wxMenuItem *item = FindItem(id);
 597
 598     wxCHECK_RET( item, wxT("wxMenu::Enable: no such item") );
 599
 600     item->Enable(enable);
 601 }
 602
 603 bool wxMenuBase::IsEnabled( int id ) const
 604 {
 605     wxMenuItem *item = FindItem(id);
 606
 607     wxCHECK_MSG( item, FALSE, wxT("wxMenu::IsEnabled: no such item") );
 608
 609     return item->IsEnabled();
 610 }
 611
 612 void wxMenuBase::Check( int id, bool enable )
 613 {
 614     wxMenuItem *item = FindItem(id);
 615
 616     wxCHECK_RET( item, wxT("wxMenu::Check: no such item") );
 617
 618     item->Check(enable);
 619 }
 620
 621 bool wxMenuBase::IsChecked( int id ) const
 622 {
 623     wxMenuItem *item = FindItem(id);
 624
 625     wxCHECK_MSG( item, FALSE, wxT("wxMenu::IsChecked: no such item") );
 626
 627     return item->IsChecked();
 628 }
 629
 630 void wxMenuBase::SetLabel( int id, const wxString &label )
 631 {
 632     wxMenuItem *item = FindItem(id);
 633
 634     wxCHECK_RET( item, wxT("wxMenu::SetLabel: no such item") );
 635
 636     item->SetText(label);
 637 }
 638
 639 wxString wxMenuBase::GetLabel( int id ) const
 640 {
 641     wxMenuItem *item = FindItem(id);
 642
 643     wxCHECK_MSG( item, wxT(""), wxT("wxMenu::GetLabel: no such item") );
 644
 645     return item->GetText();
 646 }
 647
 648 void wxMenuBase::SetHelpString( int id, const wxString& helpString )
 649 {
 650     wxMenuItem *item = FindItem(id);
 651
 652     wxCHECK_RET( item, wxT("wxMenu::SetHelpString: no such item") );
 653
 654     item->SetHelp( helpString );
 655 }
 656
 657 wxString wxMenuBase::GetHelpString( int id ) const
 658 {
 659     wxMenuItem *item = FindItem(id);
 660
 661     wxCHECK_MSG( item, wxT(""), wxT("wxMenu::GetHelpString: no such item") );
 662
 663     return item->GetHelp();
 664 }
 665
 666 // ----------------------------------------------------------------------------
 667 // wxMenuBarBase ctor and dtor
 668 // ----------------------------------------------------------------------------
 669
 670 wxMenuBarBase::wxMenuBarBase()
 671 {
 672     // we own the menus when we get them
 673     m_menus.DeleteContents(TRUE);
 674
 675     // not attached yet
 676     m_menuBarFrame = NULL;
 677 }
 678
 679 wxMenuBarBase::~wxMenuBarBase()
 680 {
 681     // nothing to do, the list will delete the menus because of the call to
 682     // DeleteContents() above
 683 }
 684
 685 // ----------------------------------------------------------------------------
 686 // wxMenuBar item access: the base class versions manage m_menus list, the
 687 // derived class should reflect the changes in the real menubar
 688 // ----------------------------------------------------------------------------
 689
 690 wxMenu *wxMenuBarBase::GetMenu(size_t pos) const
 691 {
 692     wxMenuList::Node *node = m_menus.Item(pos);
 693     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::GetMenu()") );
 694
 695     return node->GetData();
 696 }
 697
 698 bool wxMenuBarBase::Append(wxMenu *menu, const wxString& WXUNUSED(title))
 699 {
 700     wxCHECK_MSG( menu, FALSE, wxT("can't append NULL menu") );
 701
 702     m_menus.Append(menu);
 703     menu->Attach(this);
 704
 705     return TRUE;
 706 }
 707
 708 bool wxMenuBarBase::Insert(size_t pos, wxMenu *menu,
 709                            const wxString& title)
 710 {
 711     if ( pos == m_menus.GetCount() )
 712     {
 713         return wxMenuBarBase::Append(menu, title);
 714     }
 715     else // not at the end
 716     {
 717         wxCHECK_MSG( menu, FALSE, wxT("can't insert NULL menu") );
 718
 719         wxMenuList::Node *node = m_menus.Item(pos);
 720         wxCHECK_MSG( node, FALSE, wxT("bad index in wxMenuBar::Insert()") );
 721
 722         m_menus.Insert(node, menu);
 723         menu->Attach(this);
 724
 725         return TRUE;
 726     }
 727 }
 728
 729 wxMenu *wxMenuBarBase::Replace(size_t pos, wxMenu *menu,
 730                                const wxString& WXUNUSED(title))
 731 {
 732     wxCHECK_MSG( menu, NULL, wxT("can't insert NULL menu") );
 733
 734     wxMenuList::Node *node = m_menus.Item(pos);
 735     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::Replace()") );
 736
 737     wxMenu *menuOld = node->GetData();
 738     node->SetData(menu);
 739
 740     menu->Attach(this);
 741     menuOld->Detach();
 742
 743     return menuOld;
 744 }
 745
 746 wxMenu *wxMenuBarBase::Remove(size_t pos)
 747 {
 748     wxMenuList::Node *node = m_menus.Item(pos);
 749     wxCHECK_MSG( node, NULL, wxT("bad index in wxMenuBar::Remove()") );
 750
 751     node = m_menus.DetachNode(node);
 752     wxCHECK( node, NULL );  // unexpected
 753     wxMenu *menu = node->GetData();
 754     menu->Detach();
 755
 756     delete node;
 757
 758     return menu;
 759 }
 760
 761 int wxMenuBarBase::FindMenu(const wxString& title) const
 762 {
 763     wxString label = wxMenuItem::GetLabelFromText(title);
 764
 765     size_t count = GetMenuCount();
 766     for ( size_t i = 0; i < count; i++ )
 767     {
 768         wxString title2 = GetLabelTop(i);
 769         if ( (title2 == title) ||
 770              (wxMenuItem::GetLabelFromText(title2) == label) )
 771         {
 772             // found
 773             return (int)i;
 774         }
 775     }
 776
 777     return wxNOT_FOUND;
 778
 779 }
 780
 781 // ----------------------------------------------------------------------------
 782 // wxMenuBar attaching/detaching to/from the frame
 783 // ----------------------------------------------------------------------------
 784
 785 void wxMenuBarBase::Attach(wxFrame *frame)
 786 {
 787     wxASSERT_MSG( !IsAttached(), wxT("menubar already attached!") );
 788
 789     m_menuBarFrame = frame;
 790 }
 791
 792 void wxMenuBarBase::Detach()
 793 {
 794     wxASSERT_MSG( IsAttached(), wxT("detaching unattached menubar") );
 795
 796     m_menuBarFrame = NULL;
 797 }
 798
 799 // ----------------------------------------------------------------------------
 800 // wxMenuBar searching for items
 801 // ----------------------------------------------------------------------------
 802
 803 wxMenuItem *wxMenuBarBase::FindItem(int id, wxMenu **menu) const
 804 {
 805     if ( menu )
 806         *menu = NULL;
 807
 808     wxMenuItem *item = NULL;
 809     size_t count = GetMenuCount();
 810     for ( size_t i = 0; !item && (i < count); i++ )
 811     {
 812         item = m_menus[i]->FindItem(id, menu);
 813     }
 814
 815     return item;
 816 }
 817
 818 int wxMenuBarBase::FindMenuItem(const wxString& menu, const wxString& item) const
 819 {
 820     wxString label = wxMenuItem::GetLabelFromText(menu);
 821
 822     int i = 0;
 823     wxMenuList::Node *node;
 824     for ( node = m_menus.GetFirst(); node; node = node->GetNext(), i++ )
 825     {
 826         if ( label == wxMenuItem::GetLabelFromText(GetLabelTop(i)) )
 827             return node->GetData()->FindItem(item);
 828     }
 829
 830     return wxNOT_FOUND;
 831 }
 832
 833 // ---------------------------------------------------------------------------
 834 // wxMenuBar functions forwarded to wxMenuItem
 835 // ---------------------------------------------------------------------------
 836
 837 void wxMenuBarBase::Enable(int id, bool enable)
 838 {
 839     wxMenuItem *item = FindItem(id);
 840
 841     wxCHECK_RET( item, wxT("attempt to enable an item which doesn't exist") );
 842
 843     item->Enable(enable);
 844 }
 845
 846 void wxMenuBarBase::Check(int id, bool check)
 847 {
 848     wxMenuItem *item = FindItem(id);
 849
 850     wxCHECK_RET( item, wxT("attempt to check an item which doesn't exist") );
 851     wxCHECK_RET( item->IsCheckable(), wxT("attempt to check an uncheckable item") );
 852
 853     item->Check(check);
 854 }
 855
 856 bool wxMenuBarBase::IsChecked(int id) const
 857 {
 858     wxMenuItem *item = FindItem(id);
 859
 860     wxCHECK_MSG( item, FALSE, wxT("wxMenuBar::IsChecked(): no such item") );
 861
 862     return item->IsChecked();
 863 }
 864
 865 bool wxMenuBarBase::IsEnabled(int id) const
 866 {
 867     wxMenuItem *item = FindItem(id);
 868
 869     wxCHECK_MSG( item, FALSE, wxT("wxMenuBar::IsEnabled(): no such item") );
 870
 871     return item->IsEnabled();
 872 }
 873
 874 void wxMenuBarBase::SetLabel(int id, const wxString& label)
 875 {
 876     wxMenuItem *item = FindItem(id);
 877
 878     wxCHECK_RET( item, wxT("wxMenuBar::SetLabel(): no such item") );
 879
 880     item->SetText(label);
 881 }
 882
 883 wxString wxMenuBarBase::GetLabel(int id) const
 884 {
 885     wxMenuItem *item = FindItem(id);
 886
 887     wxCHECK_MSG( item, wxEmptyString,
 888                  wxT("wxMenuBar::GetLabel(): no such item") );
 889
 890     return item->GetText();
 891 }
 892
 893 void wxMenuBarBase::SetHelpString(int id, const wxString& helpString)
 894 {
 895     wxMenuItem *item = FindItem(id);
 896
 897     wxCHECK_RET( item, wxT("wxMenuBar::SetHelpString(): no such item") );
 898
 899     item->SetHelp(helpString);
 900 }
 901
 902 wxString wxMenuBarBase::GetHelpString(int id) const
 903 {
 904     wxMenuItem *item = FindItem(id);
 905
 906     wxCHECK_MSG( item, wxEmptyString,
 907                  wxT("wxMenuBar::GetHelpString(): no such item") );
 908
 909     return item->GetHelp();
 910 }
 911
 912 #endif // wxUSE_MENUS