motion/ui/ui_control.rb in bubble-wrap-1.1.3 vs motion/ui/ui_control.rb in bubble-wrap-1.1.4

@@ -1,7 +1,14 @@
 module UIControlWrap
-  def when(events, &block)
+  def when(events, options={}, &block)
     @callback ||= {}
-    @callback[events] = block
-    addTarget(@callback[events], action:'call', forControlEvents: events)
+    @callback[events] ||= []
+    
+    unless options[:append]
+      @callback[events] = []
+      removeTarget(nil, action: nil, forControlEvents: events)
+    end
+
+    @callback[events] << block
+    addTarget(@callback[events].last, action:'call', forControlEvents: events)
   end
 end