Implement NSMenuValidation protocol for the wxNSMenuItemTarget

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23435 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/cocoa/menuitem.mm

@@ -47,6 +47,7 @@
 }
 
 - (void)wxMenuItemAction: (id)sender;
+- (BOOL)validateMenuItem: (id)menuItem;
 @end //interface wxNSMenuItemTarget
 
 @implementation wxNSMenuItemTarget : NSObject
@@ -68,6 +69,15 @@
     }
 }
 
+- (BOOL)validateMenuItem: (id)menuItem
+{
+    // TODO: Do wxWindows validation here and avoid sending during idle time
+    wxLogDebug("wxMenuItemAction");
+    wxMenuItem *item = wxMenuItem::GetFromCocoa(menuItem);
+    wxCHECK_MSG(item,NO,"validateMenuItem received but no wxMenuItem exists!");
+    return item->IsEnabled();
+}
+
 @end //implementation wxNSMenuItemTarget
 
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