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