Detecting keypress (SO)

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle'
});

application.template.hbs

<style>
html, body {
  width:100%;
  height:100%;
  margin:0;
  padding:0;
}

.app-body { 
  width:100%;
  height:100%;
  background:#212121;
  color:#eee;
  padding:20px;
  box-sizing:border-box;
}

*:focus {
  outline: 4px solid tomato;
}
</style>
<h1>Welcome to {{appName}}</h1>
<p>Answer to <a href="http://stackoverflow.com/questions/34958499/detecting-keypress-in-ember-js-v2" target="_blank">Detecting keypress in Ember.js 2.x</a></p>
<br>
<br>
{{outlet}}
{{my-component item=this setAction="updateKey" }}

<br>
<br>

my-component.component.js

import Ember from 'ember';

export default Ember.Component.extend({
  didRender: function() {
    this.$().attr({ tabindex: 1 });
    this.$().focus();
  },
  shortcutKey: null,
  
  keyDown(event) {
    this.set('shortcutKey', String.fromCharCode(event.keyCode));
  }
});

my-component.template.hbs

<div class="app-body"> 
	Pressed: {{shortcutKey}} 
</div> 

twiddle.json

{
  "version": "0.5.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.2.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember-template-compiler.js"
  }
}