----- Original Message ----- From: "Jules Suggate" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, December 08, 2008 6:49 AM Subject: [flexcoders] Parsley MVC :: some thoughts
> Anyone used Parsley MVC? I'm a bit confused by it. > > There's the standard MVC FrontController class, which exposes a method > dispatchEvent() for app-wide notifications. It also has a concept of > interceptors which is nice... so far so good. > > BUT... that dispatchEvent() call executes *synchronously*. Control > won't return to your code until *every single listener* to that event > finishes executing!! In a single-threaded environment like Flash > Player, I would have thought this to be a disastrous design > decision... can anyone shed any light on this, as I'm sure there's > something I'm missing here! Why is it disastrous? The flash player is single threaded so it's not possible have concurrently running code (something I think that Adobe should address in the future) so why shouldn't all the waiting listeners be called? It's not possible to resume execution elsewhere while a listener is still active because that would require semaphores to handle pseudo concurrency and I'm sure that holds true not just for the listeners themselves but also for the mechanism that calls the waiting listeners. Paul > > TIA, > +J > > PS another thing I haven't figured out yet is how to inject > dependencies into a View component... it seems Parsley can only inject > into objects that have been created in the Parsley config file ... and > because View components are instantiated by the Flex framework, from > what I can tell Parsley has no way to reference them... this has the > unpleasant side-effect of requiring all my View code to access the > FrontController directly through the FrontController.root static > property. > > In fact, the FrontController class is bugging me -- it is a concrete > class with no abstract interface I can code to. It's making me nervous > about lock-in to the Parsley framework. > > Kinda goes against the whole IoC thing, no? > > PPS And yeah, I will post this to the Parsley forums, but I want the > esteemed opinion of those on this list too! > > ------------------------------------ > > -- > Flexcoders Mailing List > FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt > Alternative FAQ location: > https://share.acrobat.com/adc/document.do?docid=942dbdc8-e469-446f-b4cf-1e62079f6847 > Search Archives: > http://www.mail-archive.com/flexcoders%40yahoogroups.comYahoo! Groups > Links > > >
