I'm not sure I understand your question clearly but if I assume correctly I think the answer will be yes, there is no need for each descendant to instantiate its own responder.
Aaron On Sun, Jan 17, 2010 at 6:37 PM, Tim Romano <[email protected]> wrote: > > > Thank you, Aaron, for the helpful answers. My intention would be to have > each of the descendants of MYHTTPSERVICEBASE point to a different > destination and raise an event specific to that destination, and to have a > separate listeners for each kind of event. If I've understood you correctly, > there is no need for each of the descendants to instantiate their own > Responder and no requirement for them to override the base execute() method > too. > > Tim > > /* this method is in the descendant class and overrides the base method */ > private overrides function onResult(e:ResultEvent, token:Object=null):void > { > // raise a specific event > } > > /* these two methods are in the base class */ > > public function execute() : void { > myResponder = new AsyncResponder(onResult, onFault); > this.resultFormat= HTTPService.RESULT_FORMAT_TEXT; > var token: AsyncToken = this.send(); > token.addResponder(myResponder); > } > > private function onResult(e:ResultEvent, token:Object=null):void { > // this method is overridden by descendants > > } > > > > On 1/17/2010 3:38 PM, Aaron Hardy wrote: > > > > I'll take a crack at it. > > Can the event object be dispatched from within the MYHTTPSERVICEBASE? > Sure. I think there may be a separate underlying question here though. > Are you asking how? Maybe you can clarify? > > Will the GUI hear it if it's dispatched from the base class? > First of all, if the service classes you're talking about aren't on a > display list (it's very likely they are NOT) then an event doesn't bubble in > the traditional sense. Nothing will hear the event unless it specifically > has added an event listener to your service object. So if you want any view > component to hear the event being dispatched by your service object, the > view component will need to add an event listener to your service object. > Depending on the framework you're using, there may be some other mechanism > whereby the view can hear about a command's completion. Something else you > can do (though some architecture developers will cringe) is dispatch the > event off the stage, the system manager, or the base application from your > command and then the view would add an event listener to whichever object > that is. > > In a class that extends MYHTTPSERVICEBASE, can I override the onResult() > method that has been registered with the Responder by the base class? > Yes. In the case of your sample code, if you override onResult in your > class that extends MYHTTPSERVICEBASE, it is the overriding function that is > passed into the responder. That is, when you reference onResult, you're > referencing the "most extended" onResult function, not just the onResult > function in the class from which onResult is referenced. > > I hope that makes sense. It's very likely I misinterpreted your questions. > > Aaron > > > >
