App.FlashMessageView = Ember.View.extend
  templateName: 'flash_message'
  classNames: ['flash-message']
  classNameBindings: ['message:active']
  message: (-> @get('controller.flash_message')).property('controller.flash_message')

  inactivator: (->
    if @get('message')
      Ember.run.later (=> @set 'controller.flash_message', ''), 4000
  ).observes('message')