How to run function after view finish render change [duplicate]

Question

Possible Duplicate:
Using Ember.js, how do I run some js after a view is rendered?

I use JWPlayer to show video on my site and JWPlayer use javascript to create viewer.

I have to run JWPlayer script after my hidden view change to show.

jwplayer('video_space').setup({
    'flashplayer': 'player.swf',
    'file': 'http://content.longtailvideo.com/videos/flvplayer.flv',
    'controlbar': 'bottom',
    'width': '470',
    'height': '320'
  });

I binding my view with value on controller

<script type="text/x-handlebars" >
  {{#view Food.previewView }}
    Video session
    <div {{bindAttr class="showPreview"}}>
        <div id='video_space'>Video Loading...</div>
    </div>
    {{#view SC.Button target="Food.appController" action="show"}}
        show
    {{/view}} 
  {{/view}}
</script>

My javascript for all controller and view

Food = Ember.Application.create();

Food.appController = Ember.Object.create({
    showVideo: false,

    show: function(){
        Food.previewView.set('showVideo', true);
    }
});

Food.previewView = Ember.View.extend({
    showVideoBinding: 'Food.appController.showVideo',

    showPreview: function() {
        return this.get('showVideo') ? "show" : "hide";
    }.property('showVideo')
});

If I run JWPlayer script when change "showVideo" variable the video will error because $('#video_space') is still hidden.

Emberjs have some delegate method like "afterViewChange" or "viewDidChange" ?

testing code http://jsfiddle.net/apirak/Ay6Fh/

Answer 1

Override the Ember.View.didInsertElement function and place your customizations in there.

http://docs.emberjs.com/#doc=Ember.View&method=didInsertElement&src=false

Answer 2

One thing, you did an error when you created your appController, when creating objects you need to use .create instead of .extend, this mistake was causing the button to don't find the "show" action of you controller.

That said, you can still bind on showVideo for you actions, and when it changes you can call your JWPlayer script to show it up.