MACROMEDIA FLASH 8-COMPONENTS LANGUAGE Reference page 828

Description
Event; broadcast to all registered listeners when the content finishes loading.
The first usage example uses a dispatcher/listener event model. A component instance
( ) dispatches an event (in this case, ) and the event is handled by a
loaderInstance complete
function, also called a handler, on a listener object ( ) that you create. You
listenerObject
define a method with the same name as the event on the listener object; the method is called
when the event is triggered. When the event is triggered, it automatically passes an event
object ( ) to the listener object method. Each event object has properties that
eventObject
contain information about the event. You can use these properties to write code that handles
the event. Finally, you call the method on the
EventDispatcher.addEventListener()
component instance that broadcasts the event to register the listener with the instance. When
the instance dispatches the event, the listener is called.
For more information, see "EventDispatcher class" on page 499.
The second usage example uses an handler and must be attached directly to a Loader
on()
instance. The keyword , used inside an handler attached to a component, refers to
this on()
the component instance. For example, the following code, attached to the Loader instance
, sends "_level0.myLoaderComponent" to the Output panel:
myLoaderComponent
on (complete) {
trace(this);
}
Example
The following example creates a Loader component, , and then defines a listener
my_ldr
object for a event. The example loads an image from a web page; when loading is
complete
complete, the listener displays a message in the Output panel.
Drag a Loader component to the library, then add the following code to the first frame of
the timeline.
/**
Requires:
- Loader component in Library.
*/
System.security.allowDomain("http://www.flash-mx.com");
//Create loader instance.
this.createClassObject(mx.controls.Loader, "my_ldr", 10);
//Create listener object.
var loaderListener:Object = new Object();
loaderListener.complete = function(evt_obj:Object){
824 Loader component