src/gtk/menu.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        menu.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "menu.h"
  12 #pragma implementation "menuitem.h"
  13 #endif
  14
  15 #include "wx/menu.h"
  16 #include "wx/log.h"
  17 #include "wx/intl.h"
  18 #include "wx/app.h"
  19
  20 #include "gdk/gdk.h"
  21 #include "gtk/gtk.h"
  22
  23 //-----------------------------------------------------------------------------
  24 // wxMenuBar
  25 //-----------------------------------------------------------------------------
  26
  27 IMPLEMENT_DYNAMIC_CLASS(wxMenuBar,wxWindow)
  28
  29 wxMenuBar::wxMenuBar( long style )
  30 {
  31     m_needParent = FALSE; // hmmm
  32
  33     PreCreation( (wxWindow *) NULL, -1, wxDefaultPosition, wxDefaultSize, style, "menu" );
  34
  35     m_menus.DeleteContents( TRUE );
  36
  37     m_menubar = gtk_menu_bar_new();
  38
  39     if (style & wxMB_DOCKABLE)
  40     {
  41         m_widget = gtk_handle_box_new();
  42         gtk_container_add( GTK_CONTAINER(m_widget), GTK_WIDGET(m_menubar) );
  43         gtk_widget_show( GTK_WIDGET(m_menubar) );
  44     }
  45     else
  46     {
  47         m_widget = GTK_WIDGET(m_menubar);
  48     }
  49
  50     PostCreation();
  51
  52     Show( TRUE );
  53 }
  54
  55 wxMenuBar::wxMenuBar()
  56 {
  57     m_needParent = FALSE; // hmmm
  58
  59     PreCreation( (wxWindow *) NULL, -1, wxDefaultPosition, wxDefaultSize, 0, "menu" );
  60
  61     m_menus.DeleteContents( TRUE );
  62
  63     m_menubar = gtk_menu_bar_new();
  64
  65     m_widget = GTK_WIDGET(m_menubar);
  66
  67     PostCreation();
  68
  69     Show( TRUE );
  70 }
  71
  72 void wxMenuBar::Append( wxMenu *menu, const wxString &title )
  73 {
  74     m_menus.Append( menu );
  75
  76     wxString s = _T("");
  77     for ( const wxChar *pc = title; *pc != _T('\0'); pc++ )
  78     {
  79         if (*pc == _T('&'))
  80         {
  81             pc++; /* skip it */
  82 #if (GTK_MINOR_VERSION > 0)
  83     //      s << '_';  not yet
  84 #endif
  85         }
  86         s << *pc;
  87     }
  88
  89     menu->SetTitle(s);
  90     menu->m_owner = gtk_menu_item_new_with_label( MBSTRINGCAST s.mbc_str() );
  91     gtk_widget_show( menu->m_owner );
  92     gtk_menu_item_set_submenu( GTK_MENU_ITEM(menu->m_owner), menu->m_menu );
  93
  94     gtk_menu_bar_append( GTK_MENU_BAR(m_menubar), menu->m_owner );
  95 }
  96
  97 static int FindMenuItemRecursive( const wxMenu *menu, const wxString &menuString, const wxString &itemString )
  98 {
  99     if (menu->GetTitle() == menuString)
 100     {
 101         int res = menu->FindItem( itemString );
 102         if (res != wxNOT_FOUND)
 103             return res;
 104     }
 105
 106     wxNode *node = ((wxMenu *)menu)->GetItems().First();    // const_cast
 107     while (node)
 108     {
 109         wxMenuItem *item = (wxMenuItem*)node->Data();
 110         if (item->IsSubMenu())
 111             return FindMenuItemRecursive(item->GetSubMenu(), menuString, itemString);
 112
 113         node = node->Next();
 114     }
 115
 116     return wxNOT_FOUND;
 117 }
 118
 119 wxMenuItem *wxMenuBar::FindItemForId(int itemId, wxMenu **menuForItem = NULL) const
 120 {
 121     if ( menuForItem )
 122     {
 123         // TODO return the pointer to the menu
 124
 125         *menuForItem = NULL;
 126     }
 127
 128     return FindItem(itemId);
 129 }
 130
 131 int wxMenuBar::FindMenuItem( const wxString &menuString, const wxString &itemString ) const
 132 {
 133     wxNode *node = m_menus.First();
 134     while (node)
 135     {
 136         wxMenu *menu = (wxMenu*)node->Data();
 137         int res = FindMenuItemRecursive( menu, menuString, itemString);
 138         if (res != -1) return res;
 139         node = node->Next();
 140     }
 141     return -1;
 142 }
 143
 144 // Find a wxMenuItem using its id. Recurses down into sub-menus
 145 static wxMenuItem* FindMenuItemByIdRecursive(const wxMenu* menu, int id)
 146 {
 147     wxMenuItem* result = menu->FindItem(id);
 148
 149     wxNode *node = ((wxMenu *)menu)->GetItems().First(); // const_cast
 150     while ( node && result == NULL )
 151     {
 152         wxMenuItem *item = (wxMenuItem*)node->Data();
 153         if (item->IsSubMenu())
 154         {
 155             result = FindMenuItemByIdRecursive( item->GetSubMenu(), id );
 156         }
 157         node = node->Next();
 158     }
 159
 160     return result;
 161 }
 162
 163 wxMenuItem* wxMenuBar::FindItem( int id ) const
 164 {
 165     wxMenuItem* result = 0;
 166     wxNode *node = m_menus.First();
 167     while (node && result == 0)
 168     {
 169         wxMenu *menu = (wxMenu*)node->Data();
 170         result = FindMenuItemByIdRecursive( menu, id );
 171         node = node->Next();
 172     }
 173
 174     return result;
 175 }
 176
 177 void wxMenuBar::Check( int id, bool check )
 178 {
 179     wxMenuItem* item = FindMenuItemById( id );
 180
 181     wxCHECK_RET( item, _T("wxMenuBar::Check: no such item") );
 182
 183     item->Check(check);
 184 }
 185
 186 bool wxMenuBar::IsChecked( int id ) const
 187 {
 188     wxMenuItem* item = FindMenuItemById( id );
 189
 190     wxCHECK_MSG( item, FALSE, _T("wxMenuBar::IsChecked: no such item") );
 191
 192     return item->IsChecked();
 193 }
 194
 195 void wxMenuBar::Enable( int id, bool enable )
 196 {
 197     wxMenuItem* item = FindMenuItemById( id );
 198
 199     wxCHECK_RET( item, _T("wxMenuBar::Enable: no such item") );
 200
 201     item->Enable(enable);
 202 }
 203
 204 bool wxMenuBar::IsEnabled( int id ) const
 205 {
 206     wxMenuItem* item = FindMenuItemById( id );
 207
 208     wxCHECK_MSG( item, FALSE, _T("wxMenuBar::IsEnabled: no such item") );
 209
 210     return item->IsEnabled();
 211 }
 212
 213 wxString wxMenuBar::GetLabel( int id ) const
 214 {
 215     wxMenuItem* item = FindMenuItemById( id );
 216
 217     wxCHECK_MSG( item, _T(""), _T("wxMenuBar::GetLabel: no such item") );
 218
 219     return item->GetText();
 220 }
 221
 222 void wxMenuBar::SetLabel( int id, const wxString &label )
 223 {
 224     wxMenuItem* item = FindMenuItemById( id );
 225
 226     wxCHECK_RET( item, _T("wxMenuBar::SetLabel: no such item") );
 227
 228     item->SetText( label );
 229 }
 230
 231 void wxMenuBar::EnableTop( int pos, bool flag )
 232 {
 233     wxNode *node = m_menus.Nth( pos );
 234
 235     wxCHECK_RET( node, _T("menu not found") );
 236
 237     wxMenu* menu = (wxMenu*)node->Data();
 238
 239     if (menu->m_owner)
 240         gtk_widget_set_sensitive( menu->m_owner, flag );
 241 }
 242
 243 wxString wxMenuBar::GetLabelTop( int pos ) const
 244 {
 245     wxNode *node = m_menus.Nth( pos );
 246
 247     wxCHECK_MSG( node, _T("invalid"), _T("menu not found") );
 248
 249     wxMenu* menu = (wxMenu*)node->Data();
 250
 251     return menu->GetTitle();
 252 }
 253
 254 void wxMenuBar::SetLabelTop( int pos, const wxString& label )
 255 {
 256     wxNode *node = m_menus.Nth( pos );
 257
 258     wxCHECK_RET( node, _T("menu not found") );
 259
 260     wxMenu* menu = (wxMenu*)node->Data();
 261
 262     menu->SetTitle( label );
 263 }
 264
 265 void wxMenuBar::SetHelpString( int id, const wxString& helpString )
 266 {
 267     wxMenuItem* item = FindMenuItemById( id );
 268
 269     wxCHECK_RET( item, _T("wxMenuBar::SetHelpString: no such item") );
 270
 271     item->SetHelp( helpString );
 272 }
 273
 274 wxString wxMenuBar::GetHelpString( int id ) const
 275 {
 276     wxMenuItem* item = FindMenuItemById( id );
 277
 278     wxCHECK_MSG( item, _T(""), _T("wxMenuBar::GetHelpString: no such item") );
 279
 280     return item->GetHelp();
 281 }
 282
 283 //-----------------------------------------------------------------------------
 284 // "activate"
 285 //-----------------------------------------------------------------------------
 286
 287 static void gtk_menu_clicked_callback( GtkWidget *widget, wxMenu *menu )
 288 {
 289     int id = menu->FindMenuIdByMenuItem(widget);
 290
 291     /* should find it for normal (not popup) menu */
 292     wxASSERT( (id != -1) || (menu->GetInvokingWindow() != NULL) );
 293
 294     if (!menu->IsEnabled(id))
 295         return;
 296
 297     wxMenuItem* item = menu->FindItem( id );
 298     wxCHECK_RET( item, _T("error in menu item callback") );
 299
 300     if (item->IsCheckable())
 301     {
 302         if (item->GetCheckedFlag() == item->IsChecked())
 303         {
 304             /* the menu item has been checked by calling wxMenuItem->Check() */
 305             return;
 306         }
 307         else
 308         {
 309             /* the user pressed on the menu item -> report */
 310             item->SetCheckedFlag(item->IsChecked());  /* make consistent again */
 311         }
 312     }
 313
 314     wxCommandEvent event( wxEVT_COMMAND_MENU_SELECTED, id );
 315     event.SetEventObject( menu );
 316     event.SetInt(id );
 317
 318     if (menu->GetCallback())
 319     {
 320         (void) (*(menu->GetCallback())) (*menu, event);
 321         return;
 322     }
 323
 324     if (menu->GetEventHandler()->ProcessEvent(event))
 325         return;
 326
 327     wxWindow *win = menu->GetInvokingWindow();
 328     if (win)
 329         win->GetEventHandler()->ProcessEvent( event );
 330 }
 331
 332 //-----------------------------------------------------------------------------
 333 // "select"
 334 //-----------------------------------------------------------------------------
 335
 336 static void gtk_menu_hilight_callback( GtkWidget *widget, wxMenu *menu )
 337 {
 338     int id = menu->FindMenuIdByMenuItem(widget);
 339
 340     wxASSERT( id != -1 ); // should find it!
 341
 342     if (!menu->IsEnabled(id))
 343         return;
 344
 345     wxMenuEvent event( wxEVT_MENU_HIGHLIGHT, id );
 346     event.SetEventObject( menu );
 347
 348 /*   wxMSW doesn't call callback here either
 349
 350      if (menu->m_callback)
 351      {
 352         (void) (*(menu->m_callback)) (*menu, event);
 353         return;
 354      }
 355 */
 356
 357     if (menu->GetEventHandler()->ProcessEvent(event))
 358         return;
 359
 360     wxWindow *win = menu->GetInvokingWindow();
 361     if (win) win->GetEventHandler()->ProcessEvent( event );
 362 }
 363
 364 //-----------------------------------------------------------------------------
 365 // "deselect"
 366 //-----------------------------------------------------------------------------
 367
 368 static void gtk_menu_nolight_callback( GtkWidget *widget, wxMenu *menu )
 369 {
 370     int id = menu->FindMenuIdByMenuItem(widget);
 371
 372     wxASSERT( id != -1 ); // should find it!
 373
 374     if (!menu->IsEnabled(id))
 375         return;
 376
 377     wxMenuEvent event( wxEVT_MENU_HIGHLIGHT, -1 );
 378     event.SetEventObject( menu );
 379
 380     if (menu->GetEventHandler()->ProcessEvent(event))
 381         return;
 382
 383     wxWindow *win = menu->GetInvokingWindow();
 384     if (win)
 385         win->GetEventHandler()->ProcessEvent( event );
 386 }
 387
 388 //-----------------------------------------------------------------------------
 389 // wxMenuItem
 390 //-----------------------------------------------------------------------------
 391
 392 IMPLEMENT_DYNAMIC_CLASS(wxMenuItem,wxObject)
 393
 394 wxMenuItem::wxMenuItem()
 395 {
 396     m_id = ID_SEPARATOR;
 397     m_isCheckMenu = FALSE;
 398     m_isChecked = FALSE;
 399     m_isEnabled = TRUE;
 400     m_subMenu = (wxMenu *) NULL;
 401     m_menuItem = (GtkWidget *) NULL;
 402 }
 403
 404 // it's valid for this function to be called even if m_menuItem == NULL
 405 void wxMenuItem::SetName( const wxString& str )
 406 {
 407     m_text = _T("");
 408     for ( const wxChar *pc = str; *pc != _T('\0'); pc++ )
 409     {
 410         if (*pc == _T('&'))
 411         {
 412             pc++; /* skip it */
 413 #if (GTK_MINOR_VERSION > 0)
 414             m_text << _T('_');
 415 #endif
 416         }
 417         m_text << *pc;
 418     }
 419
 420     if (m_menuItem)
 421     {
 422         GtkLabel *label = GTK_LABEL( GTK_BIN(m_menuItem)->child );
 423         gtk_label_set( label, m_text.mbc_str());
 424     }
 425 }
 426
 427 void wxMenuItem::Check( bool check )
 428 {
 429     wxCHECK_RET( m_menuItem, _T("invalid menu item") );
 430
 431     wxCHECK_RET( IsCheckable(), _T("Can't check uncheckable item!") )
 432
 433     if (check == m_isChecked) return;
 434
 435     m_isChecked = check;
 436     gtk_check_menu_item_set_state( (GtkCheckMenuItem*)m_menuItem, (gint)check );
 437 }
 438
 439 void wxMenuItem::Enable( bool enable )
 440 {
 441     wxCHECK_RET( m_menuItem, _T("invalid menu item") );
 442
 443     gtk_widget_set_sensitive( m_menuItem, enable );
 444     m_isEnabled = enable;
 445 }
 446
 447 bool wxMenuItem::IsChecked() const
 448 {
 449     wxCHECK_MSG( m_menuItem, FALSE, _T("invalid menu item") );
 450
 451     wxCHECK( IsCheckable(), FALSE ); // can't get state of uncheckable item!
 452
 453     bool bIsChecked = ((GtkCheckMenuItem*)m_menuItem)->active != 0;
 454
 455     return bIsChecked;
 456 }
 457
 458 //-----------------------------------------------------------------------------
 459 // wxMenu
 460 //-----------------------------------------------------------------------------
 461
 462 IMPLEMENT_DYNAMIC_CLASS(wxMenu,wxEvtHandler)
 463
 464 wxMenu::wxMenu( const wxString& title, const wxFunction func )
 465 {
 466     m_title = title;
 467     m_items.DeleteContents( TRUE );
 468     m_invokingWindow = (wxWindow *) NULL;
 469
 470 #if (GTK_MINOR_VERSION > 0)
 471     m_accel = gtk_accel_group_new();
 472     m_factory = gtk_item_factory_new( GTK_TYPE_MENU, "<main>", m_accel );
 473     m_menu = gtk_item_factory_get_widget( m_factory, "<main>" );
 474 #else
 475     m_menu = gtk_menu_new();  // Do not show!
 476 #endif
 477
 478     m_callback = func;
 479     m_eventHandler = this;
 480     m_clientData = (void*) NULL;
 481
 482     if (m_title.IsNull()) m_title = _T("");
 483     if (m_title != _T(""))
 484     {
 485         Append(-2, m_title);
 486         AppendSeparator();
 487     }
 488
 489     m_owner = (GtkWidget*) NULL;
 490 }
 491
 492 wxMenu::~wxMenu()
 493 {
 494     /* how do we delete an item-factory ? */
 495 }
 496
 497 void wxMenu::SetTitle( const wxString& title )
 498 {
 499     // TODO Waiting for something better
 500     m_title = title;
 501 }
 502
 503 const wxString wxMenu::GetTitle() const
 504 {
 505     return m_title;
 506 }
 507
 508 void wxMenu::AppendSeparator()
 509 {
 510     wxMenuItem *mitem = new wxMenuItem();
 511     mitem->SetId(ID_SEPARATOR);
 512
 513     GtkWidget *menuItem = gtk_menu_item_new();
 514     gtk_menu_append( GTK_MENU(m_menu), menuItem );
 515     gtk_widget_show( menuItem );
 516
 517     mitem->SetMenuItem(menuItem);
 518     m_items.Append( mitem );
 519 }
 520
 521 void wxMenu::Append( int id, const wxString &item, const wxString &helpStr, bool checkable )
 522 {
 523     wxMenuItem *mitem = new wxMenuItem();
 524     mitem->SetId(id);
 525     mitem->SetText(item);
 526     mitem->SetHelp(helpStr);
 527     mitem->SetCheckable(checkable);
 528     const wxChar *text = mitem->GetText();
 529
 530 #if (GTK_MINOR_VERSION > 0)
 531     wxChar buf[100];
 532     wxStrcpy( buf, _T("/") );
 533     wxStrcat( buf, text );
 534
 535     const wxWX2MBbuf pbuf = wxConv_current->cWX2MB(buf);
 536     GtkItemFactoryEntry entry;
 537     entry.path = MBSTRINGCAST pbuf;
 538     entry.accelerator = (gchar*) NULL;
 539     entry.callback = (GtkItemFactoryCallback) gtk_menu_clicked_callback;
 540     entry.callback_action = 0;
 541     if (checkable)
 542         entry.item_type = "<CheckItem>";
 543     else
 544         entry.item_type = "<Item>";
 545
 546     gtk_item_factory_create_item( m_factory, &entry, (gpointer) this, 2 );  /* what is 2 ? */
 547
 548     /* in order to get the pointer to the item we need the item text _without_ underscores */
 549     wxString s = _T("<main>/");
 550     for ( const wxChar *pc = text; *pc != _T('\0'); pc++ )
 551     {
 552         if (*pc == _T('_')) pc++; /* skip it */
 553         s << *pc;
 554     }
 555
 556     GtkWidget *menuItem = gtk_item_factory_get_widget( m_factory, s.mbc_str() );
 557
 558 #else
 559
 560     GtkWidget *menuItem = checkable ? gtk_check_menu_item_new_with_label(text)
 561                                     : gtk_menu_item_new_with_label(text);
 562
 563     gtk_signal_connect( GTK_OBJECT(menuItem), "activate",
 564                         GTK_SIGNAL_FUNC(gtk_menu_clicked_callback),
 565                         (gpointer)this );
 566
 567     gtk_menu_append( GTK_MENU(m_menu), menuItem );
 568     gtk_widget_show( menuItem );
 569
 570 #endif
 571
 572     gtk_signal_connect( GTK_OBJECT(menuItem), "select",
 573                         GTK_SIGNAL_FUNC(gtk_menu_hilight_callback),
 574                         (gpointer)this );
 575
 576     gtk_signal_connect( GTK_OBJECT(menuItem), "deselect",
 577                         GTK_SIGNAL_FUNC(gtk_menu_nolight_callback),
 578                         (gpointer)this );
 579
 580     mitem->SetMenuItem(menuItem);
 581
 582     m_items.Append( mitem );
 583 }
 584
 585 void wxMenu::Append( int id, const wxString &text, wxMenu *subMenu, const wxString &helpStr )
 586 {
 587     wxMenuItem *mitem = new wxMenuItem();
 588     mitem->SetId(id);
 589     mitem->SetText(text);
 590     mitem->SetHelp(helpStr);
 591
 592     GtkWidget *menuItem = gtk_menu_item_new_with_label(mitem->GetText().mbc_str());
 593     mitem->SetMenuItem(menuItem);
 594     mitem->SetSubMenu(subMenu);
 595
 596     gtk_signal_connect( GTK_OBJECT(menuItem), "select",
 597                         GTK_SIGNAL_FUNC(gtk_menu_hilight_callback),
 598                         (gpointer*)this );
 599
 600     gtk_signal_connect( GTK_OBJECT(menuItem), "deselect",
 601                         GTK_SIGNAL_FUNC(gtk_menu_nolight_callback),
 602                         (gpointer*)this );
 603
 604     gtk_menu_item_set_submenu( GTK_MENU_ITEM(menuItem), subMenu->m_menu );
 605     gtk_menu_append( GTK_MENU(m_menu), menuItem );
 606     gtk_widget_show( menuItem );
 607     m_items.Append( mitem );
 608 }
 609
 610 void wxMenu::Append( wxMenuItem *item )
 611 {
 612     m_items.Append( item );
 613
 614     GtkWidget *menuItem = (GtkWidget*) NULL;
 615
 616     if (item->IsSeparator())
 617         menuItem = gtk_menu_item_new();
 618     else if (item->IsSubMenu())
 619         menuItem = gtk_menu_item_new_with_label(item->GetText().mbc_str());
 620     else
 621         menuItem = item->IsCheckable() ? gtk_check_menu_item_new_with_label(item->GetText().mbc_str())
 622                                        : gtk_menu_item_new_with_label(item->GetText().mbc_str());
 623
 624     if (!item->IsSeparator())
 625     {
 626         gtk_signal_connect( GTK_OBJECT(menuItem), "select",
 627                             GTK_SIGNAL_FUNC(gtk_menu_hilight_callback),
 628                             (gpointer*)this );
 629
 630         gtk_signal_connect( GTK_OBJECT(menuItem), "deselect",
 631                             GTK_SIGNAL_FUNC(gtk_menu_nolight_callback),
 632                             (gpointer*)this );
 633
 634         if (!item->IsSubMenu())
 635         {
 636             gtk_signal_connect( GTK_OBJECT(menuItem), "activate",
 637                                 GTK_SIGNAL_FUNC(gtk_menu_clicked_callback),
 638                                 (gpointer*)this );
 639         }
 640     }
 641
 642     gtk_menu_append( GTK_MENU(m_menu), menuItem );
 643     gtk_widget_show( menuItem );
 644     item->SetMenuItem(menuItem);
 645 }
 646
 647 int wxMenu::FindItem( const wxString itemString ) const
 648 {
 649     wxString s = _T("");
 650     for ( const wxChar *pc = itemString; *pc != _T('\0'); pc++ )
 651     {
 652         if (*pc == _T('&'))
 653         {
 654             pc++; /* skip it */
 655 #if (GTK_MINOR_VERSION > 0)
 656             s << _T('_');
 657 #endif
 658         }
 659         s << *pc;
 660     }
 661
 662     wxNode *node = m_items.First();
 663     while (node)
 664     {
 665         wxMenuItem *item = (wxMenuItem*)node->Data();
 666         if (item->GetText() == s)
 667         {
 668             return item->GetId();
 669         }
 670         node = node->Next();
 671     }
 672
 673     return wxNOT_FOUND;
 674 }
 675
 676 void wxMenu::Enable( int id, bool enable )
 677 {
 678     wxMenuItem *item = FindItem(id);
 679
 680     wxCHECK_RET( item, _T("wxMenu::Enable: no such item") );
 681
 682     item->Enable(enable);
 683 }
 684
 685 bool wxMenu::IsEnabled( int id ) const
 686 {
 687     wxMenuItem *item = FindItem(id);
 688
 689     wxCHECK_MSG( item, FALSE, _T("wxMenu::IsEnabled: no such item") );
 690
 691     return item->IsEnabled();
 692 }
 693
 694 void wxMenu::Check( int id, bool enable )
 695 {
 696     wxMenuItem *item = FindItem(id);
 697
 698     wxCHECK_RET( item, _T("wxMenu::Check: no such item") );
 699
 700     item->Check(enable);
 701 }
 702
 703 bool wxMenu::IsChecked( int id ) const
 704 {
 705     wxMenuItem *item = FindItem(id);
 706
 707     wxCHECK_MSG( item, FALSE, _T("wxMenu::IsChecked: no such item") );
 708
 709     return item->IsChecked();
 710 }
 711
 712 void wxMenu::SetLabel( int id, const wxString &label )
 713 {
 714     wxMenuItem *item = FindItem(id);
 715
 716     wxCHECK_RET( item, _T("wxMenu::SetLabel: no such item") );
 717
 718     item->SetText(label);
 719 }
 720
 721 wxString wxMenu::GetLabel( int id ) const
 722 {
 723     wxMenuItem *item = FindItem(id);
 724
 725     wxCHECK_MSG( item, _T(""), _T("wxMenu::GetLabel: no such item") );
 726
 727     return item->GetText();
 728 }
 729
 730 void wxMenu::SetHelpString( int id, const wxString& helpString )
 731 {
 732     wxMenuItem *item = FindItem(id);
 733
 734     wxCHECK_RET( item, _T("wxMenu::SetHelpString: no such item") );
 735
 736     item->SetHelp( helpString );
 737 }
 738
 739 wxString wxMenu::GetHelpString( int id ) const
 740 {
 741     wxMenuItem *item = FindItem(id);
 742
 743     wxCHECK_MSG( item, _T(""), _T("wxMenu::GetHelpString: no such item") );
 744
 745     return item->GetHelp();
 746 }
 747
 748 int wxMenu::FindMenuIdByMenuItem( GtkWidget *menuItem ) const
 749 {
 750     wxNode *node = m_items.First();
 751     while (node)
 752     {
 753         wxMenuItem *item = (wxMenuItem*)node->Data();
 754         if (item->GetMenuItem() == menuItem)
 755            return item->GetId();
 756         node = node->Next();
 757     }
 758
 759     return wxNOT_FOUND;
 760 }
 761
 762 wxMenuItem *wxMenu::FindItem(int id) const
 763 {
 764     wxNode *node = m_items.First();
 765     while (node)
 766     {
 767         wxMenuItem *item = (wxMenuItem*)node->Data();
 768         if (item->GetId() == id)
 769         {
 770             return item;
 771         }
 772         node = node->Next();
 773     }
 774
 775     /* Not finding anything here can be correct
 776      * when search the entire menu system for
 777      * an entry -> no error message. */
 778
 779     return (wxMenuItem *) NULL;
 780 }
 781
 782 void wxMenu::SetInvokingWindow( wxWindow *win )
 783 {
 784     m_invokingWindow = win;
 785 }
 786
 787 wxWindow *wxMenu::GetInvokingWindow()
 788 {
 789     return m_invokingWindow;
 790 }
 791
 792 // Update a menu and all submenus recursively. source is the object that has
 793 // the update event handlers defined for it. If NULL, the menu or associated
 794 // window will be used.
 795 void wxMenu::UpdateUI(wxEvtHandler* source)
 796 {
 797   if (!source && GetInvokingWindow())
 798     source = GetInvokingWindow()->GetEventHandler();
 799   if (!source)
 800     source = GetEventHandler();
 801   if (!source)
 802     source = this;
 803
 804   wxNode* node = GetItems().First();
 805   while (node)
 806   {
 807     wxMenuItem* item = (wxMenuItem*) node->Data();
 808     if ( !item->IsSeparator() )
 809     {
 810       wxWindowID id = item->GetId();
 811       wxUpdateUIEvent event(id);
 812       event.SetEventObject( source );
 813
 814       if (source->ProcessEvent(event))
 815       {
 816         if (event.GetSetText())
 817           SetLabel(id, event.GetText());
 818         if (event.GetSetChecked())
 819           Check(id, event.GetChecked());
 820         if (event.GetSetEnabled())
 821           Enable(id, event.GetEnabled());
 822       }
 823
 824       if (item->GetSubMenu())
 825         item->GetSubMenu()->UpdateUI(source);
 826     }
 827     node = node->Next();
 828   }
 829 }
 830