Stetic.WidgetEditSession.OnRootWidgetChanged C# (CSharp) Method

        void OnRootWidgetChanged()
        {
            if (designer != null) {
                if (designer.Parent is Gtk.Plug)
                    ((Gtk.Plug)designer.Parent).Remove (designer);
                designer = null;
            }

            if (plug != null) {
                Gdk.Threads.Enter ();
                plug.Add (WrapperWidget);
                plug.ShowAll ();
                Gdk.Threads.Leave ();
            }

            if (frontend != null)
                frontend.NotifyRootWidgetChanged ();
            if (RootWidgetChanged != null)
                RootWidgetChanged (this, EventArgs.Empty);
        }