protected void Application_Start(object sender, EventArgs e)
{
	ObjectFactory.Initialized += ObjectFactory_Initialized;
}

void ObjectFactory_Initialized(object sender, Telerik.Sitefinity.Data.ExecutedEventArgs e)
{
	if (e.CommandName != "RegisterCommonTypes")
		return;

	IToolboxFilter currentFilter = ObjectFactory.Resolve<IToolboxFilter>("Telerik.Sitefinity.DesignerToolbox.DefaultToolboxFilter");
	IToolboxFilter newFilter = new RoleToolboxFilter(currentFilter);
	ObjectFactory.Container.RegisterInstance<IToolboxFilter>(typeof(RoleToolboxFilter).FullName, newFilter);
}