ember-with-custom-events

application.controller.js

import Ember from 'ember';

class ItemRating extends HTMLElement {
	createdCallback () {
    this.insertAdjacentHTML('afterbegin', `
			<a data-rating="1">&#9733;</a>
			<a data-rating="2">&#9733;</a>
			<a data-rating="3">&#9733;</a>
			<a data-rating="4">&#9733;</a>
			<a data-rating="5">&#9733;</a>
		`);
  }
  
  attachedCallback () {
    this.addEventListener('click', (e) => {
      var rating = parseInt(e.target.getAttribute('data-rating'));
      var e = new CustomEvent('rateitem', {
        bubbles: true,
        details: {
          rating: rating
        }
      });
      this.dispatchEvent(e);
    });
  }
}

document.registerElement('item-rating', ItemRating);

export default Ember.Controller.extend({
  actions: {
    doSomethingWithRating: function (){
      console.log('action fired from rateitem event with args', arguments);
    }
  }
});

application.template.hbs

<item-rating onrateitem={{action 'doSomethingWithRating'}}></item-rating>

twiddle.json

{
  "version": "0.4.9",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.9/ember.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/1.13.11/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.9/ember-template-compiler.js"
  }
}