protected var controller:IController

protected static var instanceMap:Array

protected var model:IModel

protected var multitonKey:String

protected var view:IView

public function Facade(key:String)

Constructor.

This IFacade implementation is a Multiton, so you should not call the constructor directly, but instead call the static Factory method, passing the unique key for this instance Facade.getInstance( multitonKey )

Parameters

key:String

Throws

— Error if instance for this Multiton key has already been constructed

public static function getInstance(key:String):IFacade

Facade Multiton Factory method

Parameters

key:String

Returns

IFacade — the Multiton instance of the Facade

public function hasCommand(notificationName:String):Boolean

Check if a Command is registered for a given Notification

Parameters

notificationName:String

Returns

Boolean — whether a Command is currently registered for the given notificationName.

public function hasMediator(mediatorName:String):Boolean

Check if a Mediator is registered or not

Parameters

mediatorName:String

Returns

Boolean — whether a Mediator is registered with the given mediatorName.

public function hasProxy(proxyName:String):Boolean

Check if a Proxy is registered

Parameters

proxyName:String

Returns

Boolean — whether a Proxy is currently registered with the given proxyName.

protected function initializeController():void

Initialize the Controller.

Called by the initializeFacade method. Override this method in your subclass of Facade if one or both of the following are true:

• You wish to initialize a different IController.
• You have Commands to register with the Controller at startup..

If you don't want to initialize a different IController, call super.initializeController() at the beginning of your method, then register Commands.

protected function initializeFacade():void

Initialize the Multiton Facade instance.

Called automatically by the constructor. Override in your subclass to do any subclass specific initializations. Be sure to call super.initializeFacade(), though.

protected function initializeModel():void

Initialize the Model.

Called by the initializeFacade method. Override this method in your subclass of Facade if one or both of the following are true:

• You wish to initialize a different IModel.
• You have Proxys to register with the Model that do not retrieve a reference to the Facade at construction time.

If you don't want to initialize a different IModel, call super.initializeModel() at the beginning of your method, then register Proxys.

Note: This method is rarely overridden; in practice you are more likely to use a Command to create and register Proxys with the Model, since Proxys with mutable data will likely need to send INotifications and thus will likely want to fetch a reference to the Facade during their construction.

public function initializeNotifier(key:String):void

Set the Multiton key for this facade instance.

Not called directly, but instead from the constructor when getInstance is invoked. It is necessary to be public in order to implement INotifier.

Parameters

key:String

protected function initializeView():void

Initialize the View.

Called by the initializeFacade method. Override this method in your subclass of Facade if one or both of the following are true:

• You wish to initialize a different IView.
• You have Observers to register with the View

If you don't want to initialize a different IView, call super.initializeView() at the beginning of your method, then register IMediator instances.

Note: This method is rarely overridden; in practice you are more likely to use a Command to create and register Mediators with the View, since IMediator instances will need to send INotifications and thus will likely want to fetch a reference to the Facade during their construction.

public function notifyObservers(notification:INotification):void

Notify Observers.

This method is left public mostly for backward compatibility, and to allow you to send custom notification classes using the facade.

P> Usually you should just call sendNotification and pass the parameters, never having to construct the notification yourself.

Parameters

notification:INotification — the INotification to have the View notify Observers of.

public function registerCommand(notificationName:String, commandClassRef:Class):void

Register an ICommand with the Controller by Notification name.

Parameters

	notificationName:String — the name of the INotification to associate the ICommand with
	commandClassRef:Class — a reference to the Class of the ICommand

public function registerMediator(mediator:IMediator):void

Register a IMediator with the View.

Parameters

mediator:IMediator — the name to associate with this IMediator

public function registerProxy(proxy:IProxy):void

Register an IProxy with the Model by name.

Parameters

proxy:IProxy — the name of the IProxy.

public function removeCommand(notificationName:String):void

Remove a previously registered ICommand to INotification mapping from the Controller.

Parameters

notificationName:String — the name of the INotification to remove the ICommand mapping for

public function removeCore(key:String):void

Remove a Core

Parameters

key:String — of the Core to remove

public function removeMediator(mediatorName:String):IMediator

Remove an IMediator from the View.

Parameters

mediatorName:String — name of the IMediator to be removed.

Returns

IMediator — the IMediator that was removed from the View

public function removeProxy(proxyName:String):IProxy

Remove an IProxy from the Model by name.

Parameters

proxyName:String — the IProxy to remove from the Model.

Returns

IProxy — the IProxy that was removed from the Model

public function retrieveMediator(mediatorName:String):IMediator

Retrieve an IMediator from the View.

Parameters

mediatorName:String

Returns

IMediator — the IMediator previously registered with the given mediatorName.

public function retrieveProxy(proxyName:String):IProxy

Retrieve an IProxy from the Model by name.

Parameters

proxyName:String — the name of the proxy to be retrieved.

Returns

IProxy — the IProxy instance previously registered with the given proxyName.

public function sendNotification(notificationName:String, body:Object = null, type:String = null):void

Create and send an INotification.

Keeps us from having to construct new notification instances in our implementation code.

Parameters

	notificationName:String — the name of the notiification to send
	body:Object (default = null) — the body of the notification (optional)
	type:String (default = null) — the type of the notification (optional)

protected const MULTITON_MSG:String = "Facade instance for this Multiton key already constructed!"