ActionScript 3.0 :: DispatchEvent Versus A "State" Class?
Sep 17, 2010
Like most Flex/Flash Builder developers, I have been using the dispatchEvent method to communicate between different classes of an application. And, that works fine, but, I have been toying with a different idea about inter-class communications and would like you to shoot it down, if you can.
Why not have an application "state" class, instantiated as a singleton, which holds the information that is needed by the application's various classes? Examples would be current user and session, currentState of the parent application, selection criteria, data providers, etc. Each class would, of course, have to be aware of this state class. Each class in the application would post its relevant state to this "state" class, and likewise each class could establish listeners for changes to the relevant objects therein.
It just seems to me that, rather than dispatching events, setting up listeners that in turn fire off a listener method, I could instead bind, for example, a datagrid to the state class' relevant data provider, or whatever is needed. In other words, all "listening" and binding is performed against a single state class.
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[Code]...
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