Passing Actions from Parent To Child Component

components.tab-content.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
  	toggleActive() {
      let title = this.get('title'),
          icon = this.get('icon');
    	this.toggleProperty('tabActive');
      this.get('onTabChange')({
      	title: title,
        icon: icon
      });
    }
  }
});

components.tab-title.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
  	onTabChange(tab) {
    	this.set('title', tab.title);
    	this.set('icon', tab.icon);
    }
  }
});

controllers.application.js

import Ember from 'ember';

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

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>
{{#tab-title as |onTabChange|}}
	{{#tab-content title="f" icon=":)" onTabChange=onTabChange}}
  	foo
  {{/tab-content}}
	{{#tab-content title="b" icon=":D" onTabChange=onTabChange}}
  	bar
  {{/tab-content}}
	{{#tab-content title="s" icon="B)" onTabChange=onTabChange}}
  	stuff
  {{/tab-content}}
{{/tab-title}}

templates.components.tab-content.hbs

<span {{action 'toggleActive'}}>{{title}}</span>
{{#if tabActive}}
 <div style="display:inline-block">
 {{yield}}
 </div>
{{/if}}

templates.components.tab-title.hbs

<h1>{{icon}} - {{title}}</h1>
{{yield (action 'onTabChange')}}

twiddle.json

{
  "version": "0.7.2",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "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/2.4.4/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.4.3/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember-template-compiler.js"
  }
}