move data from progress event to another class

Question

in Flex if i have a loader class (i.e., XMLLoader) and a document class (document.as) and in document.as I'm instantiating XMLLoader

var ldr:XMLLoader = new XMLLoader(url);

... and on the document.as class I have a text box, which I would like updated with the progress from that XMLLoader is making by using URLLoaders progress event, continously. Meaning, the box would show the load in bytes that it is recieving

I'm not sure how to constantly push data out of an event and add it to another class. For example:

myLstnr.addEventListener(ProgressEvent.PROGRESS, getProgress);

private function getProgress():void
{
    // as progress updates, move it to document.as class's textbox
{

Answer 1

Your event handler (getProcess) must accept the ProgressEvent as a parameter. From that, you get the needed info. When you do, just write it out to the text field you want, e.g.

document.textfield.text = event.bytesLoaded;

Answer 2

You can dispatch an event to the other class from inside your getProgress(). Creating custom events

Answer 3

You will want to re-dispatch the ProgressEvent. You can use a custom made event to store your event object. So for example:

private function getProgress(event:ProgressEvent):void {
    dispatchEvent(new CustomObjectDataEvent(event, 'progress'));
}

Where CustomObjectDataEvent is a custom event class that you create that stores an object(the ProgressEvent) in your custom event object. Here is an example implementation of the custom event that stores this object:

package events
{
    import flash.events.Event;

    public class CustomObjectDataEvent extends Event
    {
     public var objectData:Object;

     public function CustomObjectDataEvent(objectData:Object, type:String, bubbles:Boolean=false) {
      super(type, bubbles);
      this.objectData = objectData;
     }

     public override function clone():Event {
      return new CustomObjectDataEvent(objectData, type, bubbles);
     }
    }
}

Check out: http://livedocs.adobe.com/flex/3/html/createevents_3.html for more information on dispatching custom events.