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