lib/strategies/ui_label.rb in motion_bindable-0.2.5 vs lib/strategies/ui_label.rb in motion_bindable-0.3.0

@@ -1,17 +1,11 @@
 module MotionBindable::Strategies
-
   class UILabel < ::MotionBindable::Strategy
+    include MotionBindable::StrategyHelpers
 
     def start_observing_object
-      # Observe the attribute
-      object.addObserver(
-        self,
-        forKeyPath: attr_name,
-        options: NSKeyValueObservingOptionNew | NSKeyValueObservingOptionOld,
-        context: nil
-      )
+      observe_object { |_, new| on_object_change(new) }
     end
 
     def on_object_change(new = nil)
       @bound.text = (new || attribute)
       @bound.setNeedsDisplay
@@ -20,12 +14,10 @@
     def observeValueForKeyPath(_, ofObject: _, change: _, context: _)
       on_object_change
     end
 
     def unbind
-      object.removeObserver(self, forKeyPath: attr_name)
+      stop_observe_object
       super
     end
-
   end
-
 end