That change event will only be triggered if you actually assign a new value:
model.someWrappedArrayCollectionInstance = anotherObject;
Modifying that same instance will not trigger the change event for
this property.
But something like this might work for you:
<adobe.ac:Observe
source="{ model.someWrappedArrayCollectionInstance.length }"
handler="{ handler }" />
Peter
On 3/1/07, sethelijahroot <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> Having some questions about how best to implement this. So far, I'm
> not having much success.
>
> (I'll be using Paul Williams Observe tag as extended by Alex Uhlmann )
>
> I can't get the handler function to trigger, because the source is not
> dispatching a proper event. I can listen to the events in my Class,
> and using ArrayCollection.addItem dispatches just fine.
>
> The problem lies in translating that eventListener into something the
> Observe tag can see as an Event("changed") or something similar.
>
> Help!
>
> <mxml
> creationComplete="runTest()">
>
> <mx:Script>
> private var model:Model = Model.getInstance();
>
> private function runTest():void
> {
> // This should trigger the observe tag to run the handler
> model.someWrappedArrayCollectionInstance.addSpecificDataTypeObj( {} );
> }
>
> private function handler( myList:* ):void
> {
> // THIS IS WHAT I CAN'T GET TO TRIGGER!!
> }
> </mx:Script>
>
> <adobe.ac:Observe
> source="{ model.someWrappedArrayCollectionInstance }"
> handler="{ handler }" />
>
> </mxml>
> _________________________________________________
>
> import mx.events.CollectionEvent;
> public class WrappedArrayCollection
> {
> private var collection:ArrayCollection = new ArrayCollection([]);
>
> public function WrappedArrayCollection()
> {
> collection.addEventListener( CollectionEvent.COLLECTION_CHANGE,
> collectionChangeHandler );
> }
>
> private function collectionChangeHandler():void
> {
> trace("this part works fine");
> // Should i dispatch an event here for the binding to trigger?
> }
>
> public function addSpecificDataTypeObj( obj:SpecificDataType ):void
> {
> collection.addItem( obj );
> }
> }
>
>
>
>
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