org.puremvc.java.interfaces
Interface IObserver

All Known Implementing Classes:
Observer

public interface IObserver

The interface definition for a PureMVC Observer.

In PureMVC, IObserver implementors assume these responsibilities:

PureMVC does not rely upon underlying event models such as the one provided with Flash, and ActionScript 3 does not have an inherent event model.

The Observer Pattern as implemented within PureMVC exists to support event driven communication between the application and the actors of the MVC triad.

An Observer is an object that encapsulates information about an interested object with a notification method that should be called when an INotification is broadcast. The Observer then acts as a proxy for notifying the interested object.

Observers can receive Notifications by having their notifyObserver method invoked, passing in an object implementing the INotification interface, such as a subclass of Notification.

See Also:
IView, INotification

Method Summary
 boolean compareNotifyContext(java.lang.Object object)
          Compare the given object to the notificaiton context object.
 void notifyObserver(INotification notification)
          Notify the interested object.
 void setNotifyContext(java.lang.Object notifyContext)
          Set the notification context.
 void setNotifyMethod(IFunction notifyMethod)
          Set the notification method.
 

Method Detail

setNotifyMethod

void setNotifyMethod(IFunction notifyMethod)
Set the notification method.

The notification method should take one parameter of type INotification

Parameters:
notifyMethod - the notification (callback) method of the interested object

setNotifyContext

void setNotifyContext(java.lang.Object notifyContext)
Set the notification context.

Parameters:
notifyContext - the notification context (this) of the interested object

notifyObserver

void notifyObserver(INotification notification)
Notify the interested object.

Parameters:
notification - the INotification to pass to the interested object's notification method

compareNotifyContext

boolean compareNotifyContext(java.lang.Object object)
Compare the given object to the notificaiton context object.

Parameters:
object - the object to compare.
Returns:
boolean indicating if the notification context and the object are the same.