New Twiddle

application.controller.js

import Ember from 'ember';

const { computed } = Ember;
const { alias } = computed;

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
  
  computedSomeProp: computed('my-mouse-response', function() {
		let content = this.get('my-mouse-response');
    if (content == 'Mouse entered') {
     	return "Oh you did not"; 
    } else {
      return "Wait what, you left"
    }
  }),
  
  response: alias('my-mouse-response'),
  
  actions: {
   	mouseDidEnter(content) {
    	this.set('my-mouse-response', content);
    },
    
    mouseDidLeave(content) {
      this.set('my-mouse-response', content);
    }
  }
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>
{{mouse-component onWhatEverEnter='mouseDidEnter' onWhatEverLeave='mouseDidLeave'}}

<br>
<br>
This is from controller: <strong>{{my-mouse-response}}</strong>

<br>
<br>
Alias for response: {{response}}
<br>
<br>
Some CP on controller: {{computedSomeProp}}

mouse-component.component.js

import Ember from 'ember';

export default Ember.Component.extend({
  
  mouseEnter() {
    let content = "Mouse entered";
    this.set("content", content);
    this.sendAction('onWhatEverEnter', content);
  },
  
  mouseLeave() {
    let content = "Mouse left";
    this.set("content", content);
    this.sendAction('onWhatEverLeave', content); 
  }
});

mouse-component.template.hbs

<div style="width: 200px; height: 200px; background-color: #ccc;">
	{{content}}
</div>

twiddle.json

{
  "version": "0.4.10",
  "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.debug.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"
  }
}