net.lecousin.framework.collections

Class CollectionListener.Keep<T>

java.lang.Object

net.lecousin.framework.collections.CollectionListener.Keep<T>

Type Parameters:

T - type of elements

All Implemented Interfaces:

CollectionListener<T>

Enclosing interface:

CollectionListener<T>

public static class CollectionListener.Keep<T>
extends Object
implements CollectionListener<T>

Keeps a collection of elements, such as listeners can be added asynchronously. It implements CollectionListener to get collection changes events, and allows listeners to be added and removed even some events already occurred.

Nested Class Summary

Nested classes/interfaces inherited from interface net.lecousin.framework.collections.CollectionListener

CollectionListener.Keep<T>

Field Summary

Fields

Modifier and Type	Field and Description
protected Collection<T>	col
protected Throwable	error
protected LinkedList<Pair<CollectionListener<T>,Task<Void,NoException>>>	listeners
protected byte	priority

Constructor Summary

Constructors

Constructor and Description
Keep(Collection<T> implementation, byte listenersCallPriority) Constructor.

Method Summary

Modifier and Type	Method and Description
void	addListener(CollectionListener<T> listener) Add a listener.
void	elementsAdded(Collection<? extends T> elements) Elements have been added.
void	elementsChanged(Collection<? extends T> elements) Elements have changed.
void	elementsReady(Collection<? extends T> elements) First elements are ready.
void	elementsRemoved(Collection<? extends T> elements) Elements have been removed.
void	error(Throwable error) An error occured while getting elements.
void	removeListener(CollectionListener<T> listener) Remove a listener.

Methods inherited from class java.lang.Object

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

Field Detail

col

protected Collection<T> col

priority

protected byte priority

error

protected Throwable error

listeners

protected LinkedList<Pair<CollectionListener<T>,Task<Void,NoException>>> listeners

Constructor Detail

Keep

public Keep(Collection<T> implementation,
            byte listenersCallPriority)

Constructor.

Method Detail

elementsReady

public void elementsReady(Collection<? extends T> elements)

Description copied from interface: CollectionListener

First elements are ready.

Specified by:

elementsReady in interface CollectionListener<T>

elementsAdded

public void elementsAdded(Collection<? extends T> elements)

Description copied from interface: CollectionListener

Elements have been added.

Specified by:

elementsAdded in interface CollectionListener<T>

elementsRemoved

public void elementsRemoved(Collection<? extends T> elements)

Description copied from interface: CollectionListener

Elements have been removed.

Specified by:

elementsRemoved in interface CollectionListener<T>

elementsChanged

public void elementsChanged(Collection<? extends T> elements)

Description copied from interface: CollectionListener

Elements have changed.

Specified by:

elementsChanged in interface CollectionListener<T>

error

public void error(Throwable error)

Description copied from interface: CollectionListener

An error occured while getting elements.

Specified by:

error in interface CollectionListener<T>

addListener

public void addListener(CollectionListener<T> listener)

Add a listener.

removeListener

public void removeListener(CollectionListener<T> listener)

Remove a listener. Note that the listener may still be called if some calls are pending in tasks.