Package rea.events

Class EventBroadcast<T extends UpdateEvent>

java.lang.Object

rea.events.EventBroadcast<T>

Type Parameters:

T - the type of event that can be listened to.

public class EventBroadcast<T extends UpdateEvent>
extends Object

Event broadcast to registered listeners. Listeners can be added and removed using the addListener(rea.events.UpdateListener<T>) and removeListener(rea.events.UpdateListener<T>) methods. Listeners are automatically removed if they throw an exception. Events are broadcast to all listeners using the broadcast(T) method.

Author:

José Paulo Leal jpleal@fc.up.pt

Field Summary

Fields

Modifier and Type	Field	Description
(package private) Set<UpdateListener<T>>	listeners	The listeners registered to receive events.

Constructor Summary

Constructors

Constructor	Description
EventBroadcast()	Create an instance of this class.

Method Summary

Modifier and Type	Method	Description
void	addListener(UpdateListener<T> listener)	Add a listener to the list of listeners.
void	broadcast(T event)	Broadcast an event to all listeners.
Set<UpdateListener<T>>	getListeners()	Get all the currently registered listeners.
void	removeListener(UpdateListener<T> listener)	Remove a listener from the list of listeners.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

listeners

Set<UpdateListener<T extends UpdateEvent>> listeners

The listeners registered to receive events.

Constructor Details

EventBroadcast

public EventBroadcast()

Create an instance of this class. No particular initializations are performed.

Method Details

addListener

public void addListener(UpdateListener<T> listener)

Add a listener to the list of listeners.

Parameters:

listener - the listener to add.

removeListener

public void removeListener(UpdateListener<T> listener)

Remove a listener from the list of listeners.

Parameters:

listener - the listener to remove.

getListeners

public Set<UpdateListener<T>> getListeners()

Get all the currently registered listeners. Listeners are automatically removed if they throw an exception.

Returns:

set of listeners.

broadcast

public void broadcast(T event)

Broadcast an event to all listeners. If the events is not handled by a listener, the listener is removed.

Parameters:

event - the event to broadcast.