textbender.g.util
Class CollectionRelayer<E>

java.lang.Object
  CollectionRelayer<E>

All Implemented Interfaces:

EventListener, CollectionListener<E>

Direct Known Subclasses:

CollectionRelayerLL

@ThreadSafe
public class CollectionRelayer<E>
extends Object
implements CollectionListener<E>

Relayer of collection events to listeners. Thread-safe if the provided collection of listeners, and the listeners themselves are thread-safe.

Nested Class Summary

Nested classes/interfaces inherited from interface CollectionListener

CollectionListener.Registry<E>

Constructor Summary

CollectionRelayer(Collection<CollectionListener<E>> listeners)
Creates a CollectionRelayer.

Method Summary

void	elementAdded(CollectionEvent.ElementAdded<E> e) Relays the event to the listeners.
void	elementRemoved(CollectionEvent.ElementRemoved<E> e) Relays the event to the listeners.
protected Collection<CollectionListener<E>>	listenersCopy() Returns a copy of the listener collection.

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionRelayer

public CollectionRelayer(Collection<CollectionListener<E>> listeners)

Creates a CollectionRelayer.

Parameters:

listeners - to whom events are relayed

Method Detail

elementAdded

public final void elementAdded(CollectionEvent.ElementAdded<E> e)

Relays the event to the listeners.

Specified by:

elementAdded in interface CollectionListener<E>

elementRemoved

public final void elementRemoved(CollectionEvent.ElementRemoved<E> e)

Relays the event to the listeners.

Specified by:

elementRemoved in interface CollectionListener<E>

listenersCopy

protected Collection<CollectionListener<E>> listenersCopy()

Returns a copy of the listener collection. A copy is used to guard against collection modification during relay, e.g. by the listeners themselves, which would cause relay iteration to fail.