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POFlex Custom Event - Type Coercion Error - Application domain related?
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copied!<p>I've been looking at answers for my problem, I think I may be on the right track but I just can't understand how to implement the solution. I need help.</p> <p>I have a class, RootPackage.Utils.SelectableGraphic.as, a widget, RootPackage.Widgets.WidgetWithSelection.mxml and a custom event, RootPackage.Events.SelectableGraphicEvent. </p> <p>The SelectableGraphic dispatches SelectableGraphicEvents and the WidgetWithSelection listens to those events. My event looks like this : </p> <pre><code>{ import RootPackage.utils.SelectableGraphic; import flash.events.Event; public class SelectableGraphicEvent extends Event { public static const GRAPHIC_ADDED:String = 'Graphic_Added'; public static const GRAPHIC_CLICKED:String = 'Graphic_Clicked'; private var graphic:SelectableGraphic; public function SelectableGraphicEvent(type:String, gra:SelectableGraphic, bubbles:Boolean=false, cancelable:Boolean=false) { super(type, bubbles, cancelable); graphic = gra; } override public function clone():Event { return new SelectableGraphicEvent(type, graphic, bubbles, cancelable); } public function get Graphic():SelectableGraphic { return graphic; } } </code></pre> <p>My dispatch looks like this :</p> <pre><code>lastDrawnGraphic = new SelectableGraphic(...); lastDrawnGraphic.dispatchEvent(new SelectableGraphicEvent(SelectableGraphicEvent.GRAPHIC_ADDED, lastDrawnGraphic, true)); </code></pre> <p>And my listening function looks liek this :</p> <pre><code>private function SelectableGraphic_ClickHandler(event:SelectableGraphicEvent):void { gra:SelectableGraphic = event.Graphic; ... } </code></pre> <p>It crashes between the dispatch and the reception in the WidgetWithSelection, before entering the listening function. If I change the listening function header to listen to a basic Event, then it doesn't crash but, when I try to obtain the event.Graphic, it gives the same type coercion error. I've tried many work arounds, for example receiving a normal event, casting it to a SelectableGraphicEvent and using it. The cast operation returns a null value in this case.</p> <p>The type coercion error is something like : Error #1034: Type Coercion failed: cannot convert RootPackage.Events::SelectableGraphicEvent@b56b071to RootPackage.Events.SelectableGraphicEvent.</p> <p>Anyhow, I've read a bit about this and I believe it might be due to those classes being in a different application domain than my main application or something to that effect. Apparently there's a way of changing the application domain but I just don'T know how to do this. This has me confused at the moment, as you probably can tell from the last paragraph. Is there a simpler answer or can anyone explain to me what I should be doing?</p> <p>Thanks,</p> <p>Ggilmann</p> <p><strong>EDIT TO ADD:</strong></p> <p>Here is the part where the EventListener is added. The open() is on the Added_To_Stage event and the close() is on the Remove_From_Stage :</p> <pre><code>private function open():void { this.map.addEventListener(SelectableGraphicEvent.GRAPHIC_CLICKED, SelectableGraphic_ClickHandler); this.map.addEventListener(SelectableGraphicEvent.GRAPHIC_ADDED, SelectableGraphic_AddedHandler); _selectableGraphics = GetSelectableGraphics(); } private function close():void { this.map.removeEventListener(SelectableGraphicEvent.GRAPHIC_CLICKED, SelectableGraphic_ClickHandler); this.map.removeEventListener(SelectableGraphicEvent.GRAPHIC_ADDED, SelectableGraphic_AddedHandler); ClearSelection(); } </code></pre> <p>Basically, there's a map that contains a graphic layer that contains the selectable graphics. So when I dispatch from my SelectableGraphic, the event bubbles up to map (and beyond). The map catches the event and fires the appropriate SelectableGraphic_EventHandler.</p>

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