progress

components.progress-bar.js

import Ember from 'ember';

export default Ember.Component.extend({
  
  progress: Ember.inject.service(),
  
  classNames: ['progress-bar'],
  
  attributeBindings: ['role'],
  
  role: 'progressbar',
  
  progressInstance: Ember.computed(
    'progress.registry.@each.name',
    'name',
    function() {
      let registry = this.get('progress.registry');
      let thisName = this.get('name');
      
      return registry.findBy('name', thisName) || null;
    }
  ),
  
  progressPercent: Ember.computed.alias('progressInstance.percent'),
  
  progressBarStyle: Ember.computed('progressPercent', function() {
  	let progressPercent = this.get('progressPercent');
    return Ember.String.htmlSafe(`width: ${progressPercent}`);
  })
  
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  
  appName: 'Ember Twiddle',
  
  progress: Ember.inject.service()
  
});

services.progress.js

import Ember from 'ember';

export default Ember.Service.extend({
  
  init() {
  	this._super(...arguments);
    this.registry = [];
  }
  
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{progress-bar name="main"}}
<br>
<br>

templates.components.progress-bar.hbs

<div class="bar" style={{progressBarStyle}}></div>

twiddle.json

{
  "version": "0.10.5",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.8.0",
    "ember-data": "2.8.0",
    "ember-template-compiler": "2.8.0",
    "ember-testing": "2.8.0"
  },
  "addons": {}
}