How to receive transitionEnd events on the view layer, which option is the most suitable?

transition_end_on_app.js

App = Em.Application.create({

  customEvents: {
    webkitTransitionEnd:  'transitionEnd'
  }
});

Em.View.extend({ 

  transitionEnd: function(event) {
    // write you APP logic. TransitionEnd will fire multiple times for each transitioned CSS property  
  },

});

transition_end_on_view.js

Em.View.extend({ 

  transitionEnd: function(event) {
    // write you APP logic. TransitionEnd will fire multiple times for each transitioned CSS property  
  },

  didInsertElement: function() {
    this._super();

    self.$().on('webkitTransitionEnd', function(event) { 
      self.transitionEnd(event);
    });

  })

});