lib/shoes/swt/slot.rb in shoes-swt-4.0.0.pre6 vs lib/shoes/swt/slot.rb in shoes-swt-4.0.0.pre7

@@ -26,16 +26,27 @@
       # #904 #905
       def update_visibility
         # Only alter contents on a visibility change
         return if @last_hidden_state == dsl.hidden?
 
-        if @last_hidden_state = dsl.hidden?
+        @last_hidden_state = dsl.hidden?
+
+        if @last_hidden_state
           dsl.contents.each(&:hide)
         else
           dsl.contents.each(&:show)
         end
       end
+
+      def redraw_target
+        @dsl
+      end
+
+      def remove
+        app.click_listener.remove_listeners_for(dsl)
+      end
     end
+
     class Flow < Slot; end
     class Stack < Slot; end
   end
 end