org.hippoecm.frontend.model.event

Interface IObservationContext<T extends IObservable>

All Superinterfaces:

org.apache.wicket.util.io.IClusterable, Serializable

public interface IObservationContext<T extends IObservable>
extends org.apache.wicket.util.io.IClusterable

The context representing the observer registry to the observable. Framework clients should not implement this interface.

Method Summary

Modifier and Type	Method and Description
void	notifyObservers(EventCollection<IEvent<T>> events) Notify observers of events that pertain to an observable.
void	registerObserver(IObserver<?> observer) Register an observer.
void	unregisterObserver(IObserver<?> observer) Unregister an observer.

Method Detail

notifyObservers

void notifyObservers(EventCollection<IEvent<T>> events)

Notify observers of events that pertain to an observable. The events are dispatched to registered observers.

Implementations should minimize the number of calls to this method, as all observers will be notified.

Parameters:

events - The events to be dispatched to observers

registerObserver

void registerObserver(IObserver<?> observer)

Register an observer. Allows observables to delegate subscriptions to one another. When an observable has been implemented in terms of another observable, it can translate events of the underlying observable into events that are appropriate for its own type.

Parameters:

observer -

unregisterObserver

void unregisterObserver(IObserver<?> observer)

Unregister an observer.

Parameters:

observer -