Created
July 3, 2014 18:10
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| /* Put your CSS here */ | |
| html, body { | |
| margin: 20px; | |
| } | |
| .hidden { | |
| display: none; | |
| } |
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| <!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> |
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| 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(); | |
| }); | |
| } | |
| }); |
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