I had been thinking of doing something similar since I had seen requests on Flexcoders and thought this would be a useful and doable thing, but Doug beat me to the punch:
Monkey Patching FlexSprite to list all event listeners on any Flex component
Also, a very nice use of FlexSpry
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I had a customer who asked for help in modifying the Accordion component to change panes when a user moused over a pane header rather than when clicked upon. It turns out that this was a fairly straight forward modification.
In my extension to accordion upon child add, I merely add an eventlistenr to each child’s header, listening for mouseOver events and responding to them by dispatching a click event. Everything else just fall into place, since things are already wired to respond to the click event.
Here is my extension to accordion:
<mx:accordion xmlns:mx="http://www.adobe.com/2006/mxml">
childAdd="onChildAdd(event)">
<mx:script>
<!–[CDATA[
import mx.containers.accordionClasses.AccordionHeader;
import mx.containers.Accordion;
private function onChildAdd(e:Event):void{
var a:Accordion = e.target as Accordion;
var header:AccordionHeader=a.getHeaderAt(acc.numChildren-1) as AccordionHeader;
header.addEventListener(MouseEvent.MOUSE_OVER, onMouseOver);
}
private function onMouseOver(e:MouseEvent):void{
(e.target as AccordionHeader).dispatchEvent(new MouseEvent(MouseEvent.CLICK));
}
]]–>
</mx:script>
</mx:accordion>
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