knomedia/jsbin.jizuti.css

## jsbin.jizuti.css
/* Put your CSS here */
html, body {
    margin: 20px;
}
.hidden {
  display: none;
}

## jsbin.jizuti.html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Ember Starter Kit</title>
    <link rel="stylesheet" href="http://cdnjs.cloudflare.com/ajax/libs/normalize/2.1.0/normalize.css">
    <link rel="stylesheet" href="style.css" type="text/css" media="screen" charset="utf-8">
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
    <script src="http://builds.handlebarsjs.com.s3.amazonaws.com/handlebars-v1.3.0.js"></script>
    <script src="http://builds.emberjs.com/tags/v1.5.1/ember.js"></script>
  </head>
  <body>

    <div class='wrapper'>

      <div>
        <p>
          Small example of managing focus in ember using events
        </p>
      </div>
      <div id='emberz'></div>


    </div>
    <script type="text/x-handlebars">
      {{outlet}}
    </script>


    <script type="text/x-handlebars" data-template-name="index">
      <div class='group-header'>
        <h3>Some Button that reveals some content</h3>
        <button {{action 'toggle'}} aria-controls='group-detail'>
          {{buttonLabel}}
        </button>
      </div>

      <div id='group-detail' role='region' tabindex='0'
           {{bind-attr aria-expanded='expanded'}}
           {{bind-attr class='isExpanded::hidden'}} >
           <span tabindex='0'>Here are some details</span>
      </div>

    </script>
  </body>
</html>

## jsbin.jizuti.js
App = Ember.Application.create();

App.Router.map(function() {
  // put your routes here
});

App.IndexRoute = Ember.Route.extend({
  model: function() {
    return ['red', 'yellow', 'blue'];
  }
});


App.IndexController = Ember.ObjectController.extend(Ember.Evented, {
  isExpanded: false,

  expanded: function(){
    return '' + this.get('isExpanded');
  }.property('isExpanded'),

  buttonLabel: function() {
    return (this.get('isExpanded'))? 'Hide Details' : 'Show Details';
  }.property('isExpanded'),

  actions: {
    toggle: function() {
      var eventName = 'groupExpanded';
      this.toggleProperty('isExpanded');
      if(!this.get('isExpanded')) {
        eventName = 'groupHidden';
      }
      this.trigger(eventName);
      return false;
    }
  }

});

App.IndexView = Ember.View.extend({
  didInsertElement: function(){
    this.get('controller').on('groupExpanded', this, this.focusDetails);
    this.get('controller').on('groupHidden', this, this.focusHeader);
  },
  willDestroyElement: function() {
    this.get('controller').off('groupExpanded', this, this.focusDetails);
    this.get('controller').off('groupHidden', this, this.focusHeader);
  },

  focusDetails: function() {
    Ember.run.scheduleOnce('afterRender', this, function() {
      this.$('#group-detail').focus();
    });
  },

  focusHeader: function() {
    Ember.run.scheduleOnce('afterRender', this, function() {
      this.$('.group-header button').focus();
    });
  }
});
	/* Put your CSS here */
	html, body {
	margin: 20px;
	}
	.hidden {
	display: none;
	}
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>Ember Starter Kit</title>
	<link rel="stylesheet" href="http://cdnjs.cloudflare.com/ajax/libs/normalize/2.1.0/normalize.css">
	<link rel="stylesheet" href="style.css" type="text/css" media="screen" charset="utf-8">
	<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
	<script src="http://builds.handlebarsjs.com.s3.amazonaws.com/handlebars-v1.3.0.js"></script>
	<script src="http://builds.emberjs.com/tags/v1.5.1/ember.js"></script>
	</head>
	<body>

	<div class='wrapper'>

	<div>
	<p>
	Small example of managing focus in ember using events
	</p>
	</div>
	<div id='emberz'></div>


	</div>
	<script type="text/x-handlebars">
	{{outlet}}
	</script>


	<script type="text/x-handlebars" data-template-name="index">
	<div class='group-header'>
	<h3>Some Button that reveals some content</h3>
	<button {{action 'toggle'}} aria-controls='group-detail'>
	{{buttonLabel}}
	</button>
	</div>

	<div id='group-detail' role='region' tabindex='0'
	{{bind-attr aria-expanded='expanded'}}
	{{bind-attr class='isExpanded::hidden'}} >
	<span tabindex='0'>Here are some details</span>
	</div>

	</script>
	</body>
	</html>
	App = Ember.Application.create();

	App.Router.map(function() {
	// put your routes here
	});

	App.IndexRoute = Ember.Route.extend({
	model: function() {
	return ['red', 'yellow', 'blue'];
	}
	});


	App.IndexController = Ember.ObjectController.extend(Ember.Evented, {
	isExpanded: false,

	expanded: function(){
	return '' + this.get('isExpanded');
	}.property('isExpanded'),

	buttonLabel: function() {
	return (this.get('isExpanded'))? 'Hide Details' : 'Show Details';
	}.property('isExpanded'),

	actions: {
	toggle: function() {
	var eventName = 'groupExpanded';
	this.toggleProperty('isExpanded');
	if(!this.get('isExpanded')) {
	eventName = 'groupHidden';
	}
	this.trigger(eventName);
	return false;
	}
	}

	});

	App.IndexView = Ember.View.extend({
	didInsertElement: function(){
	this.get('controller').on('groupExpanded', this, this.focusDetails);
	this.get('controller').on('groupHidden', this, this.focusHeader);
	},
	willDestroyElement: function() {
	this.get('controller').off('groupExpanded', this, this.focusDetails);
	this.get('controller').off('groupHidden', this, this.focusHeader);
	},

	focusDetails: function() {
	Ember.run.scheduleOnce('afterRender', this, function() {
	this.$('#group-detail').focus();
	});
	},

	focusHeader: function() {
	Ember.run.scheduleOnce('afterRender', this, function() {
	this.$('.group-header button').focus();
	});
	}
	});