Think of it like calling a method. There are no timers and no multiple threads. If an event is dispatched in the middle it bubbles up and then original event continues bubbling up.
Ronny Shibley > On Mar 4, 2015, at 11:30 PM, Mark Line <[email protected]> wrote: > > Hi, > > I was wondering if someone could confirm something for me about event > processing. I know if you two events are dispatched one after another, the > second event will be dispatched only after all handlers of the first event > are executed and the dispatchEvent method is returned. > > However does anyone know what would happen if during the event processing > of the first event it dispatched another event. Would the new event be > processed before any of the other event listeners (think event life cycle > if it was bubbling). > > A very basic example: > > <?xml version="1.0" encoding="utf-8"?> > <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"; > xmlns:s="library://ns.adobe.com/flex/spark" > xmlns:mx="library://ns.adobe.com/flex/mx" > creationComplete="init(event)"> > > <fx:Script> > <![CDATA[ > import mx.events.FlexEvent; > protected function button1_clickHandler(event:MouseEvent):void > { > trace("button1_clickHandler"); > this.dispatchEvent(new FlexEvent(FlexEvent.CHANGE_END)); > } > protected function eventOneHandler(event:Event):void > { > trace("eventOneHandler"); > this.dispatchEvent(new FlexEvent(FlexEvent.CHANGE_START)); > eventThreeHandler(new Event("blah")); > } > protected function eventTwoHandler(event:Event):void > { > trace("eventTwoHandler"); > } > protected function eventThreeHandler(event:Event):void > { > trace("eventThreeHandler"); > } > protected function init(event:FlexEvent):void > { > this.addEventListener(FlexEvent.CHANGE_END, eventOneHandler); > this.addEventListener(FlexEvent.CHANGE_START, eventTwoHandler); > } > ]]> > </fx:Script> > > <fx:Declarations> > <!-- Place non-visual elements (e.g., services, value objects) here --> > </fx:Declarations> > > <s:Button label="Click me" > click="button1_clickHandler(event)"/> > </s:Application> > > > Eg would Flex make sure the event handlers registered for my > this.addEventListener(FlexEvent.CHANGE_START, > eventTwoHandler) before return flow to the button1_clickHandler.
