New Twiddle

application.controller.js

import Ember from 'ember';

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

application.template.hbs

<h1>App</h1>
<div class="toolbar">
  {{link-to 'Guide' 'guide'}}
  {{link-to 'Guide/View' 'guide.view'}}
  {{outlet 'toolbar'}}
</div>
{{outlet}}

guide.empty-toolbar.template.hbs

<!-- Nothing -->

guide.index.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  activate() {
  	this.send('showPrint');
  }
});

guide.index.template.hbs

Index.

guide.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  showPrint() {
  	this.render('guide/toolbar', {
      into: 'application',
      outlet: 'toolbar'
    });
  },
  
  hidePrint() {
  	this.render('guide/empty-toolbar', {
      into: 'application',
      outlet: 'toolbar'
    });
  },
  
  actions: {
    showPrint() {
    	this.showPrint();
    },
    hidePrint() {
      this.hidePrint();
    },
    print() {
      alert('Printing!');
    } 
  }
});

guide.template.hbs

<h3>Guide</h3>
{{outlet}}

guide.toolbar.template.hbs

<button {{action 'print'}}>Print!</button>

guide.view.route.js

import Ember from 'ember';

export default Ember.Route.extend({
  activate() {
  	this.send('hidePrint');
  }
});

guide.view.template.hbs

The view!

router.js

import Ember from 'ember';
import config from './config/environment';

var Router = Ember.Router.extend({
  location: config.locationType
});

Router.map(function() {
  this.route('guide', function() {
    this.route('view');
  });
});

export default Router;

twiddle.json

{
  "version": "0.4.16",
  "EmberENV": {
    "FEATURES": {}
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.1.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.1.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.1.0/ember-template-compiler.js"
  }
}