MVC with FLEX

There has been a lot of talk about flex being the next generation development tech for enterprise solutions. Whenever one gets to think about the idea of building enterprise solutions , one word can never be ignored "DESIGN PATTERNS". When you think of a MVC implementation with flex Caingorm and pureMVC frameworks are the ones all developement teams will consider.
I havent used pureMVC but worked with Cairngorm and havent felt too good with it. The problem I face with Cairngorm is that there is need to use observers to detect the change in the model. I mean the the view really has no idea when the model it consumes would change.
The problem here is when multiple UI components are trying to detect a change to the model, you have no idea about the order in which the views react. So cairngirm became a sure shot way of getting into trouble for me.

So I had to find other approaches. And a different approach find did I. :-) . Here is a brief description of my little MVC implementation.

1. Create an interface that acts a contract between the view and the controller(handler)

2. Have the view implement the interface. This helps you create a handler that doesnt need to know much about the view that is consuming it.

Ex: -- > mx:Application implements="com.simplemvc.IsampleInterface"

3.Create a reference to the handler in the view . The handler should also hold a refernce to tghe view. Have something like

Ex:--> handler:SampleHandler id="myHandler" view="{this}" myData="{this.gridData}"



4. Call the methods in handlers/controllers when you need to .
Ex: handler.getData();

5.Have the handler call your remote Object/web service/httpservice and call back the view using the reference
Ex:view.updateCollection(data:ArrayCollection)

Checkout the source code here

Comments welcome.