X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2d17d68f470c31f7c145b095eb1a3e0c2f581f30..434d2cb3c67c7afc1637e867e47010d13ee8903f:/src/gtk1/menu.cpp

diff --git a/src/gtk1/menu.cpp b/src/gtk1/menu.cpp
index 147c0d5a1c..d2df6c95f6 100644
--- a/src/gtk1/menu.cpp
+++ b/src/gtk1/menu.cpp
@@ -15,6 +15,7 @@
 #include "wx/menu.h"
 #include "wx/log.h"
 #include "wx/intl.h"
+#include "wx/app.h"
 
 #include "gdk/gdk.h"
 #include "gtk/gtk.h"
@@ -25,6 +26,32 @@
 
 IMPLEMENT_DYNAMIC_CLASS(wxMenuBar,wxWindow)
 
+wxMenuBar::wxMenuBar( long style )
+{
+    m_needParent = FALSE; // hmmm
+
+    PreCreation( (wxWindow *) NULL, -1, wxDefaultPosition, wxDefaultSize, style, "menu" );
+
+    m_menus.DeleteContents( TRUE );
+
+    m_menubar = gtk_menu_bar_new();
+
+    if (style & wxMB_DOCKABLE)
+    {
+        m_widget = gtk_handle_box_new();
+        gtk_container_add( GTK_CONTAINER(m_widget), GTK_WIDGET(m_menubar) );
+        gtk_widget_show( GTK_WIDGET(m_menubar) );
+    }
+    else
+    {
+        m_widget = GTK_WIDGET(m_menubar);
+    }
+
+    PostCreation();
+
+    Show( TRUE );
+}
+
 wxMenuBar::wxMenuBar()
 {
     m_needParent = FALSE; // hmmm
@@ -45,41 +72,60 @@ wxMenuBar::wxMenuBar()
 void wxMenuBar::Append( wxMenu *menu, const wxString &title )
 {
     m_menus.Append( menu );
-    menu->m_title = title; 
-
-    int pos;
-    do 
+    
+    wxString s = _T("");
+    for ( const wxChar *pc = title; *pc != _T('\0'); pc++ )
     {
-        pos = menu->m_title.First( '&' );
-        if (pos != -1) menu->m_title.Remove( pos, 1 );
-    } while (pos != -1);
+        if (*pc == _T('&'))
+	{
+	    pc++; /* skip it */
+#if (GTK_MINOR_VERSION > 0)
+    //      s << '_';  not yet
+#endif
+        }
+        s << *pc;
+    }
 
-    GtkWidget *root_menu;
-    root_menu = gtk_menu_item_new_with_label( WXSTRINGCAST(menu->m_title) );
-    gtk_widget_show( root_menu );
-    gtk_menu_item_set_submenu( GTK_MENU_ITEM(root_menu), menu->m_menu );
+    menu->SetTitle(s);
+    menu->m_owner = gtk_menu_item_new_with_label( MBSTRINGCAST s.mbc_str() );
+    gtk_widget_show( menu->m_owner );
+    gtk_menu_item_set_submenu( GTK_MENU_ITEM(menu->m_owner), menu->m_menu );
 
-    gtk_menu_bar_append( GTK_MENU_BAR(m_menubar), root_menu );
+    gtk_menu_bar_append( GTK_MENU_BAR(m_menubar), menu->m_owner );
 }
 
 static int FindMenuItemRecursive( const wxMenu *menu, const wxString &menuString, const wxString &itemString )
 {
-    if (menu->m_title == menuString)
+    if (menu->GetTitle() == menuString)
     {
         int res = menu->FindItem( itemString );
-        if (res != -1) return res;
+        if (res != wxNOT_FOUND)
+            return res;
     }
-    
-    wxNode *node = menu->m_items.First();
+
+    wxNode *node = ((wxMenu *)menu)->GetItems().First();    // const_cast
     while (node)
     {
         wxMenuItem *item = (wxMenuItem*)node->Data();
         if (item->IsSubMenu())
             return FindMenuItemRecursive(item->GetSubMenu(), menuString, itemString);
+
         node = node->Next();
     }
 
-    return -1;
+    return wxNOT_FOUND;
+}
+
+wxMenuItem *wxMenuBar::FindItemForId(int itemId, wxMenu **menuForItem = NULL) const
+{
+    if ( menuForItem )
+    {
+        // TODO return the pointer to the menu
+
+        *menuForItem = NULL;
+    }
+
+    return FindItem(itemId);
 }
 
 int wxMenuBar::FindMenuItem( const wxString &menuString, const wxString &itemString ) const
@@ -95,26 +141,26 @@ int wxMenuBar::FindMenuItem( const wxString &menuString, const wxString &itemStr
     return -1;
 }
 
-/* Find a wxMenuItem using its id. Recurses down into sub-menus */
+// Find a wxMenuItem using its id. Recurses down into sub-menus
 static wxMenuItem* FindMenuItemByIdRecursive(const wxMenu* menu, int id)
 {
     wxMenuItem* result = menu->FindItem(id);
 
-    wxNode *node = menu->m_items.First();
-    while ( node && result == NULL ) 
+    wxNode *node = ((wxMenu *)menu)->GetItems().First(); // const_cast
+    while ( node && result == NULL )
     {
         wxMenuItem *item = (wxMenuItem*)node->Data();
         if (item->IsSubMenu())
-	{
+        {
             result = FindMenuItemByIdRecursive( item->GetSubMenu(), id );
-	}
+        }
         node = node->Next();
     }
 
     return result;
 }
 
-wxMenuItem* wxMenuBar::FindMenuItemById( int id ) const
+wxMenuItem* wxMenuBar::FindItem( int id ) const
 {
     wxMenuItem* result = 0;
     wxNode *node = m_menus.First();
@@ -124,34 +170,114 @@ wxMenuItem* wxMenuBar::FindMenuItemById( int id ) const
         result = FindMenuItemByIdRecursive( menu, id );
         node = node->Next();
     }
-    
+
     return result;
 }
 
 void wxMenuBar::Check( int id, bool check )
 {
     wxMenuItem* item = FindMenuItemById( id );
-    if (item) item->Check(check);
+
+    wxCHECK_RET( item, _T("wxMenuBar::Check: no such item") );
+
+    item->Check(check);
 }
 
-bool wxMenuBar::Checked( int id ) const
+bool wxMenuBar::IsChecked( int id ) const
 {
     wxMenuItem* item = FindMenuItemById( id );
-    if (item) return item->IsChecked();
-    return FALSE;
+
+    wxCHECK_MSG( item, FALSE, _T("wxMenuBar::IsChecked: no such item") );
+
+    return item->IsChecked();
 }
 
 void wxMenuBar::Enable( int id, bool enable )
 {
     wxMenuItem* item = FindMenuItemById( id );
-    if (item) item->Enable(enable);
+
+    wxCHECK_RET( item, _T("wxMenuBar::Enable: no such item") );
+
+    item->Enable(enable);
+}
+
+bool wxMenuBar::IsEnabled( int id ) const
+{
+    wxMenuItem* item = FindMenuItemById( id );
+
+    wxCHECK_MSG( item, FALSE, _T("wxMenuBar::IsEnabled: no such item") );
+
+    return item->IsEnabled();
 }
 
-bool wxMenuBar::Enabled( int id ) const
+wxString wxMenuBar::GetLabel( int id ) const
 {
     wxMenuItem* item = FindMenuItemById( id );
-    if (item) return item->IsEnabled();
-    return FALSE;
+
+    wxCHECK_MSG( item, _T(""), _T("wxMenuBar::GetLabel: no such item") );
+
+    return item->GetText();
+}
+
+void wxMenuBar::SetLabel( int id, const wxString &label )
+{
+    wxMenuItem* item = FindMenuItemById( id );
+
+    wxCHECK_RET( item, _T("wxMenuBar::SetLabel: no such item") );
+
+    item->SetText( label );
+}
+
+void wxMenuBar::EnableTop( int pos, bool flag )
+{
+    wxNode *node = m_menus.Nth( pos );
+
+    wxCHECK_RET( node, _T("menu not found") );
+
+    wxMenu* menu = (wxMenu*)node->Data();
+
+    if (menu->m_owner)
+        gtk_widget_set_sensitive( menu->m_owner, flag );
+}
+
+wxString wxMenuBar::GetLabelTop( int pos ) const
+{
+    wxNode *node = m_menus.Nth( pos );
+
+    wxCHECK_MSG( node, _T("invalid"), _T("menu not found") );
+
+    wxMenu* menu = (wxMenu*)node->Data();
+
+    return menu->GetTitle();
+}
+
+void wxMenuBar::SetLabelTop( int pos, const wxString& label )
+{
+    wxNode *node = m_menus.Nth( pos );
+
+    wxCHECK_RET( node, _T("menu not found") );
+
+    wxMenu* menu = (wxMenu*)node->Data();
+
+    menu->SetTitle( label );
+}
+
+void wxMenuBar::SetHelpString( int id, const wxString& helpString )
+{
+    wxMenuItem* item = FindMenuItemById( id );
+
+    wxCHECK_RET( item, _T("wxMenuBar::SetHelpString: no such item") );
+
+    item->SetHelp( helpString );
+}
+
+wxString wxMenuBar::GetHelpString( int id ) const
+{
+    wxMenuItem* item = FindMenuItemById( id );
+
+    wxCHECK_MSG( item, _T(""), _T("wxMenuBar::GetHelpString: no such item") );
+
+    return item->GetHelp();
 }
 
 //-----------------------------------------------------------------------------
@@ -163,41 +289,44 @@ static void gtk_menu_clicked_callback( GtkWidget *widget, wxMenu *menu )
     int id = menu->FindMenuIdByMenuItem(widget);
 
     /* should find it for normal (not popup) menu */
-    wxASSERT( (id != -1) || (menu->GetInvokingWindow() != NULL) ); 
+    wxASSERT( (id != -1) || (menu->GetInvokingWindow() != NULL) );
 
-    if (!menu->IsEnabled(id)) return;
+    if (!menu->IsEnabled(id))
+        return;
 
     wxMenuItem* item = menu->FindItem( id );
-    wxCHECK_RET( item, "error in menu item callback" );
-    
-    if (item->m_isCheckMenu)
+    wxCHECK_RET( item, _T("error in menu item callback") );
+
+    if (item->IsCheckable())
     {
-        if (item->m_isChecked == item->IsChecked())
+        if (item->GetCheckedFlag() == item->IsChecked())
         {
-	    /* the menu item has been checked by calling wxMenuItem->Check() */
+            /* the menu item has been checked by calling wxMenuItem->Check() */
             return;
-	}
-	else
-	{
-	    /* the user pressed on the menu item -> report */
-	    item->m_isChecked;  /* make consistent again */
-	}
+        }
+        else
+        {
+            /* the user pressed on the menu item -> report */
+            item->SetCheckedFlag(item->IsChecked());  /* make consistent again */
+        }
     }
 
     wxCommandEvent event( wxEVT_COMMAND_MENU_SELECTED, id );
     event.SetEventObject( menu );
     event.SetInt(id );
 
-    if (menu->m_callback)
+    if (menu->GetCallback())
     {
-        (void) (*(menu->m_callback)) (*menu, event);
+        (void) (*(menu->GetCallback())) (*menu, event);
         return;
     }
 
-    if (menu->GetEventHandler()->ProcessEvent(event)) return;
+    if (menu->GetEventHandler()->ProcessEvent(event))
+        return;
 
     wxWindow *win = menu->GetInvokingWindow();
-    if (win) win->GetEventHandler()->ProcessEvent( event );
+    if (win)
+        win->GetEventHandler()->ProcessEvent( event );
 }
 
 //-----------------------------------------------------------------------------
@@ -210,11 +339,11 @@ static void gtk_menu_hilight_callback( GtkWidget *widget, wxMenu *menu )
 
     wxASSERT( id != -1 ); // should find it!
 
-    if (!menu->IsEnabled(id)) return;
+    if (!menu->IsEnabled(id))
+        return;
 
-    wxCommandEvent event( wxEVT_MENU_HIGHLIGHT, id );
+    wxMenuEvent event( wxEVT_MENU_HIGHLIGHT, id );
     event.SetEventObject( menu );
-    event.SetInt(id );
 
 /*   wxMSW doesn't call callback here either
 
@@ -225,12 +354,37 @@ static void gtk_menu_hilight_callback( GtkWidget *widget, wxMenu *menu )
      }
 */
 
-    if (menu->GetEventHandler()->ProcessEvent(event)) return;
+    if (menu->GetEventHandler()->ProcessEvent(event))
+        return;
 
     wxWindow *win = menu->GetInvokingWindow();
     if (win) win->GetEventHandler()->ProcessEvent( event );
 }
 
+//-----------------------------------------------------------------------------
+// "deselect"
+//-----------------------------------------------------------------------------
+
+static void gtk_menu_nolight_callback( GtkWidget *widget, wxMenu *menu )
+{
+    int id = menu->FindMenuIdByMenuItem(widget);
+
+    wxASSERT( id != -1 ); // should find it!
+
+    if (!menu->IsEnabled(id))
+        return;
+
+    wxMenuEvent event( wxEVT_MENU_HIGHLIGHT, -1 );
+    event.SetEventObject( menu );
+
+    if (menu->GetEventHandler()->ProcessEvent(event))
+        return;
+
+    wxWindow *win = menu->GetInvokingWindow();
+    if (win)
+        win->GetEventHandler()->ProcessEvent( event );
+}
+
 //-----------------------------------------------------------------------------
 // wxMenuItem
 //-----------------------------------------------------------------------------
@@ -247,28 +401,34 @@ wxMenuItem::wxMenuItem()
     m_menuItem = (GtkWidget *) NULL;
 }
 
-/* it's valid for this function to be called even if m_menuItem == NULL */
+// it's valid for this function to be called even if m_menuItem == NULL
 void wxMenuItem::SetName( const wxString& str )
 {
-    m_text = "";
-    for ( const char *pc = str; *pc != '\0'; pc++ )
+    m_text = _T("");
+    for ( const wxChar *pc = str; *pc != _T('\0'); pc++ )
     {
-        if (*pc == '&') pc++; /* skip it */
+        if (*pc == _T('&'))
+	{
+	    pc++; /* skip it */
+#if (GTK_MINOR_VERSION > 0)
+            m_text << _T('_');
+#endif
+        }
         m_text << *pc;
     }
 
     if (m_menuItem)
     {
         GtkLabel *label = GTK_LABEL( GTK_BIN(m_menuItem)->child );
-        gtk_label_set( label, m_text.c_str());
+        gtk_label_set( label, m_text.mbc_str());
     }
 }
 
 void wxMenuItem::Check( bool check )
 {
-    wxCHECK_RET( m_menuItem, "invalid menu item" );
+    wxCHECK_RET( m_menuItem, _T("invalid menu item") );
 
-    wxCHECK_RET( IsCheckable(), "Can't check uncheckable item!" )
+    wxCHECK_RET( IsCheckable(), _T("Can't check uncheckable item!") )
 
     if (check == m_isChecked) return;
 
@@ -278,7 +438,7 @@ void wxMenuItem::Check( bool check )
 
 void wxMenuItem::Enable( bool enable )
 {
-    wxCHECK_RET( m_menuItem, "invalid menu item" );
+    wxCHECK_RET( m_menuItem, _T("invalid menu item") );
 
     gtk_widget_set_sensitive( m_menuItem, enable );
     m_isEnabled = enable;
@@ -286,7 +446,7 @@ void wxMenuItem::Enable( bool enable )
 
 bool wxMenuItem::IsChecked() const
 {
-    wxCHECK_MSG( m_menuItem, FALSE, "invalid menu item" );
+    wxCHECK_MSG( m_menuItem, FALSE, _T("invalid menu item") );
 
     wxCHECK( IsCheckable(), FALSE ); // can't get state of uncheckable item!
 
@@ -306,23 +466,37 @@ wxMenu::wxMenu( const wxString& title, const wxFunction func )
     m_title = title;
     m_items.DeleteContents( TRUE );
     m_invokingWindow = (wxWindow *) NULL;
+    
+#if (GTK_MINOR_VERSION > 0)
+    m_accel = gtk_accel_group_new();
+    m_factory = gtk_item_factory_new( GTK_TYPE_MENU, "<main>", m_accel );
+    m_menu = gtk_item_factory_get_widget( m_factory, "<main>" );
+#else    
     m_menu = gtk_menu_new();  // Do not show!
+#endif
 
     m_callback = func;
     m_eventHandler = this;
     m_clientData = (void*) NULL;
 
-    if (m_title.IsNull()) m_title = "";
-    if (m_title != "")
+    if (m_title.IsNull()) m_title = _T("");
+    if (m_title != _T(""))
     {
         Append(-2, m_title);
         AppendSeparator();
     }
+
+    m_owner = (GtkWidget*) NULL;
+}
+
+wxMenu::~wxMenu()
+{
+    /* how do we delete an item-factory ? */
 }
 
 void wxMenu::SetTitle( const wxString& title )
 {
-    /* Waiting for something better. */
+    // TODO Waiting for something better
     m_title = title;
 }
 
@@ -339,6 +513,7 @@ void wxMenu::AppendSeparator()
     GtkWidget *menuItem = gtk_menu_item_new();
     gtk_menu_append( GTK_MENU(m_menu), menuItem );
     gtk_widget_show( menuItem );
+    
     mitem->SetMenuItem(menuItem);
     m_items.Append( mitem );
 }
@@ -350,22 +525,60 @@ void wxMenu::Append( int id, const wxString &item, const wxString &helpStr, bool
     mitem->SetText(item);
     mitem->SetHelp(helpStr);
     mitem->SetCheckable(checkable);
-    const char *text = mitem->GetText();
+    const wxChar *text = mitem->GetText();
+    
+#if (GTK_MINOR_VERSION > 0)
+    wxChar buf[100];
+    wxStrcpy( buf, _T("/") );
+    wxStrcat( buf, text );
+    
+    const wxWX2MBbuf pbuf = wxConv_current->cWX2MB(buf);
+    GtkItemFactoryEntry entry;
+    entry.path = MBSTRINGCAST pbuf;
+    entry.accelerator = (gchar*) NULL;
+    entry.callback = (GtkItemFactoryCallback) gtk_menu_clicked_callback;
+    entry.callback_action = 0;
+    if (checkable)
+        entry.item_type = "<CheckItem>";
+    else
+        entry.item_type = "<Item>";
+    
+    gtk_item_factory_create_item( m_factory, &entry, (gpointer) this, 2 );  /* what is 2 ? */
+    
+    /* in order to get the pointer to the item we need the item text _without_ underscores */
+    wxString s = _T("<main>/");
+    for ( const wxChar *pc = text; *pc != _T('\0'); pc++ )
+    {
+        if (*pc == _T('_')) pc++; /* skip it */
+        s << *pc;
+    }
+    
+    GtkWidget *menuItem = gtk_item_factory_get_widget( m_factory, s.mbc_str() );
+    
+#else
+
     GtkWidget *menuItem = checkable ? gtk_check_menu_item_new_with_label(text)
                                     : gtk_menu_item_new_with_label(text);
-
-    mitem->SetMenuItem(menuItem);
-
+				    
     gtk_signal_connect( GTK_OBJECT(menuItem), "activate",
                         GTK_SIGNAL_FUNC(gtk_menu_clicked_callback),
-                        (gpointer*)this );
+                        (gpointer)this );
+			
+    gtk_menu_append( GTK_MENU(m_menu), menuItem );
+    gtk_widget_show( menuItem );
+    
+#endif
 
     gtk_signal_connect( GTK_OBJECT(menuItem), "select",
                         GTK_SIGNAL_FUNC(gtk_menu_hilight_callback),
-                        (gpointer*)this );
+                        (gpointer)this );
+
+    gtk_signal_connect( GTK_OBJECT(menuItem), "deselect",
+                        GTK_SIGNAL_FUNC(gtk_menu_nolight_callback),
+                        (gpointer)this );
+
+    mitem->SetMenuItem(menuItem);
 
-    gtk_menu_append( GTK_MENU(m_menu), menuItem );
-    gtk_widget_show( menuItem );
     m_items.Append( mitem );
 }
 
@@ -374,126 +587,162 @@ void wxMenu::Append( int id, const wxString &text, wxMenu *subMenu, const wxStri
     wxMenuItem *mitem = new wxMenuItem();
     mitem->SetId(id);
     mitem->SetText(text);
-
-    GtkWidget *menuItem = gtk_menu_item_new_with_label(mitem->GetText());
     mitem->SetHelp(helpStr);
+
+    GtkWidget *menuItem = gtk_menu_item_new_with_label(mitem->GetText().mbc_str());
     mitem->SetMenuItem(menuItem);
     mitem->SetSubMenu(subMenu);
 
+    gtk_signal_connect( GTK_OBJECT(menuItem), "select",
+                        GTK_SIGNAL_FUNC(gtk_menu_hilight_callback),
+                        (gpointer*)this );
+
+    gtk_signal_connect( GTK_OBJECT(menuItem), "deselect",
+                        GTK_SIGNAL_FUNC(gtk_menu_nolight_callback),
+                        (gpointer*)this );
+
     gtk_menu_item_set_submenu( GTK_MENU_ITEM(menuItem), subMenu->m_menu );
     gtk_menu_append( GTK_MENU(m_menu), menuItem );
     gtk_widget_show( menuItem );
     m_items.Append( mitem );
 }
 
-int wxMenu::FindItem( const wxString itemString ) const
+void wxMenu::Append( wxMenuItem *item )
 {
-    wxString s( itemString );
+    m_items.Append( item );
+
+    GtkWidget *menuItem = (GtkWidget*) NULL;
+
+    if (item->IsSeparator())
+        menuItem = gtk_menu_item_new();
+    else if (item->IsSubMenu())
+        menuItem = gtk_menu_item_new_with_label(item->GetText().mbc_str());
+    else
+        menuItem = item->IsCheckable() ? gtk_check_menu_item_new_with_label(item->GetText().mbc_str())
+                                       : gtk_menu_item_new_with_label(item->GetText().mbc_str());
+
+    if (!item->IsSeparator())
+    {
+        gtk_signal_connect( GTK_OBJECT(menuItem), "select",
+                            GTK_SIGNAL_FUNC(gtk_menu_hilight_callback),
+                            (gpointer*)this );
+
+        gtk_signal_connect( GTK_OBJECT(menuItem), "deselect",
+                            GTK_SIGNAL_FUNC(gtk_menu_nolight_callback),
+                            (gpointer*)this );
+
+        if (!item->IsSubMenu())
+        {
+            gtk_signal_connect( GTK_OBJECT(menuItem), "activate",
+                                GTK_SIGNAL_FUNC(gtk_menu_clicked_callback),
+                                (gpointer*)this );
+        }
+    }
+
+    gtk_menu_append( GTK_MENU(m_menu), menuItem );
+    gtk_widget_show( menuItem );
+    item->SetMenuItem(menuItem);
+}
 
-    int pos;
-    do 
+int wxMenu::FindItem( const wxString itemString ) const
+{
+    wxString s = _T("");
+    for ( const wxChar *pc = itemString; *pc != _T('\0'); pc++ )
     {
-        pos = s.First( '&' );
-        if (pos != -1) s.Remove( pos, 1 );
-    } while (pos != -1);
+        if (*pc == _T('&'))
+	{
+	    pc++; /* skip it */
+#if (GTK_MINOR_VERSION > 0)
+            s << _T('_');
+#endif
+        }
+        s << *pc;
+    }
 
     wxNode *node = m_items.First();
     while (node)
     {
         wxMenuItem *item = (wxMenuItem*)node->Data();
         if (item->GetText() == s)
-	{
+        {
             return item->GetId();
-	}
+        }
         node = node->Next();
     }
 
-    return -1;
+    return wxNOT_FOUND;
 }
 
 void wxMenu::Enable( int id, bool enable )
 {
     wxMenuItem *item = FindItem(id);
-    if (item)
-    { 
-        item->Enable(enable);
-    }
+
+    wxCHECK_RET( item, _T("wxMenu::Enable: no such item") );
+
+    item->Enable(enable);
 }
 
 bool wxMenu::IsEnabled( int id ) const
 {
     wxMenuItem *item = FindItem(id);
-    if (item)
-    {
-        return item->IsEnabled();
-    }
-    else
-    {
-        return FALSE;
-    }
+
+    wxCHECK_MSG( item, FALSE, _T("wxMenu::IsEnabled: no such item") );
+
+    return item->IsEnabled();
 }
 
 void wxMenu::Check( int id, bool enable )
 {
     wxMenuItem *item = FindItem(id);
-    if (item)
-    {
-        item->Check(enable);
-    }
+
+    wxCHECK_RET( item, _T("wxMenu::Check: no such item") );
+
+    item->Check(enable);
 }
 
 bool wxMenu::IsChecked( int id ) const
 {
     wxMenuItem *item = FindItem(id);
-    if (item)
-    {
-        return item->IsChecked();
-    }
-    else
-    {
-        return FALSE;
-    }
+
+    wxCHECK_MSG( item, FALSE, _T("wxMenu::IsChecked: no such item") );
+
+    return item->IsChecked();
 }
 
 void wxMenu::SetLabel( int id, const wxString &label )
 {
     wxMenuItem *item = FindItem(id);
-    if (item)
-    {
-        item->SetText(label);
-    }
+
+    wxCHECK_RET( item, _T("wxMenu::SetLabel: no such item") );
+
+    item->SetText(label);
 }
 
 wxString wxMenu::GetLabel( int id ) const
 {
     wxMenuItem *item = FindItem(id);
-    if (item)
-    { 
-        return item->GetText();
-    }
-    else
-    {
-        return "";
-    }
+
+    wxCHECK_MSG( item, _T(""), _T("wxMenu::GetLabel: no such item") );
+
+    return item->GetText();
 }
 
 void wxMenu::SetHelpString( int id, const wxString& helpString )
 {
     wxMenuItem *item = FindItem(id);
-    if (item) item->SetHelp( helpString );
+
+    wxCHECK_RET( item, _T("wxMenu::SetHelpString: no such item") );
+
+    item->SetHelp( helpString );
 }
 
 wxString wxMenu::GetHelpString( int id ) const
 {
     wxMenuItem *item = FindItem(id);
-    if (item)
-    { 
-        return item->GetHelp();
-    }
-    else
-    {
-        return "";
-    }
+
+    wxCHECK_MSG( item, _T(""), _T("wxMenu::GetHelpString: no such item") );
+
+    return item->GetHelp();
 }
 
 int wxMenu::FindMenuIdByMenuItem( GtkWidget *menuItem ) const
@@ -507,19 +756,19 @@ int wxMenu::FindMenuIdByMenuItem( GtkWidget *menuItem ) const
         node = node->Next();
     }
 
-    return -1;
+    return wxNOT_FOUND;
 }
 
 wxMenuItem *wxMenu::FindItem(int id) const
 {
     wxNode *node = m_items.First();
-    while (node) 
+    while (node)
     {
         wxMenuItem *item = (wxMenuItem*)node->Data();
         if (item->GetId() == id)
-	{
+        {
             return item;
-	}
+        }
         node = node->Next();
     }
 
@@ -540,4 +789,42 @@ wxWindow *wxMenu::GetInvokingWindow()
     return m_invokingWindow;
 }
 
+// Update a menu and all submenus recursively. source is the object that has
+// the update event handlers defined for it. If NULL, the menu or associated
+// window will be used.
+void wxMenu::UpdateUI(wxEvtHandler* source)
+{
+  if (!source && GetInvokingWindow())
+    source = GetInvokingWindow()->GetEventHandler();
+  if (!source)
+    source = GetEventHandler();
+  if (!source)
+    source = this;
+
+  wxNode* node = GetItems().First();
+  while (node)
+  {
+    wxMenuItem* item = (wxMenuItem*) node->Data();
+    if ( !item->IsSeparator() )
+    {
+      wxWindowID id = item->GetId();
+      wxUpdateUIEvent event(id);
+      event.SetEventObject( source );
+
+      if (source->ProcessEvent(event))
+      {
+        if (event.GetSetText())
+          SetLabel(id, event.GetText());
+        if (event.GetSetChecked())
+          Check(id, event.GetChecked());
+        if (event.GetSetEnabled())
+          Enable(id, event.GetEnabled());
+      }
+
+      if (item->GetSubMenu())
+        item->GetSubMenu()->UpdateUI(source);
+    }
+    node = node->Next();
+  }
+}