Question

I thought I had custom events nailed in Flex, but seemingly not. I am trying to loosely couple my application by dispatching events between classes instead of using horrid parent.parent.parent statements.

I have a ComboBox inside a custom HBox class… for simplicity I am doing the following

public function onComboBoxChange(event:MouseEvent):void {     trace('dispatching event');     dispatchEvent(new Event('hello')); } 

I have a custom List class that I would like to respond to the event…

public function CustomList() {     //...     this.addEventListener(FlexEvent.INITIALIZE, onInit); }  private function onInit(event:FlexEvent):void {     this.addEventListener('hello', onHello); }  private function onHello(event:Event):void {     trace('oh hello'); } 

However the event listener is never called.

Both CustomList and CustomHBox have the same parent.

I was under the impression you could dispatchEvent from any object and all other active objects would be able to listen for it. Not that simple?

Thanks!

Answer 1

Your list either needs to call addEventListener(‘hello’) on the combobox directly, or the combobox needs to dispatch the event with a bubbles argument of true.

Your concept of events is missing ‘bubbling’ you can read more about events in flash on the Adobe site.