test-focus-invalidation

components.my-but.js

import Ember from 'ember';

export default Ember.Component.extend({
  init: function() {
    this._super();
    console.log("lala");
  },
  tagName: 'button',
  classNameBindings: ['focused:focus'],
  click: function(event) {
    this.sendAction('onClick', this);
  },
  focusIn: function() {
    this.set('focused', true);
  },
  focusOut: function() {
    this.set('focused', false);
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  observeClicked: Ember.observer('clicked', function() {
    this.set('buttons', [0, 0, 0]);
  }),
  buttons: [1,2,3,4,5],
  clicked: false,
  actions: {
  	onClick: function(but) {
    	this.set('clicked', true); 
    }
  }
});

styles.app.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

button.focus {
 color: #f00; 
}

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{#each buttons as |button|}}
{{#my-but onClick=(action 'onClick')}}
click me {{ button }}
{{/my-but}}
{{/each}}
<br>
<br>

templates.components.my-but.hbs

{{yield}}

twiddle.json

{
  "version": "0.10.4",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.7.0",
    "ember-data": "2.7.0",
    "ember-template-compiler": "2.7.0"
  },
  "addons": {}
}