org.eclipse.gef.common.collections

Class MultisetListenerHelper<E>

java.lang.Object

org.eclipse.gef.common.collections.MultisetListenerHelper<E>

Type Parameters:

E - The element type of the ObservableMultiset.

Direct Known Subclasses:

MultisetExpressionHelper

public class MultisetListenerHelper<E>
extends Object

A utility class to support change notifications for an ObservableMultiset.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MultisetListenerHelper.AtomicChange<E> A simple implementation of an MultisetChangeListener.Change.
static class	MultisetListenerHelper.ElementarySubChange<E> An elementary change related to a single element of a Multiset.

Constructor Summary

Constructors

Constructor and Description
MultisetListenerHelper(ObservableMultiset<E> source) Constructs a new MultisetListenerHelper for the given source ObservableMultiset.

Method Summary

Modifier and Type	Method and Description
void	addListener(InvalidationListener listener) Adds a new InvalidationListener to this MultisetListenerHelper.
void	addListener(MultisetChangeListener<? super E> listener) Adds a new SetMultimapChangeListener to this MultisetListenerHelper.
void	fireValueChangedEvent(MultisetChangeListener.Change<? extends E> change) Notifies all attached InvalidationListeners and MultisetChangeListeners about the change.
protected ObservableMultiset<E>	getSource() Returns the source ObservableMultiset this MultisetListenerHelper is bound to, which is used in change notifications.
protected void	notifyInvalidationListeners() Notifies all registered InvalidationListeners.
protected void	notifyMultisetChangeListeners(MultisetChangeListener.Change<? extends E> change) Notifies the attached MultisetChangeListeners about the related change.
void	removeListener(InvalidationListener listener) Removes the given InvalidationListener from this MultisetListenerHelper.
void	removeListener(MultisetChangeListener<? super E> listener) Removes the given MultisetChangeListener from this MultisetListenerHelper.

Methods inherited from class java.lang.Object

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

Constructor Detail

MultisetListenerHelper

public MultisetListenerHelper(ObservableMultiset<E> source)

Constructs a new MultisetListenerHelper for the given source ObservableMultiset.

Parameters:

source - The ObservableMultiset to use as source in change notifications.

Method Detail

addListener

public void addListener(InvalidationListener listener)

Adds a new InvalidationListener to this MultisetListenerHelper. If the same listener is added more than once, it will be registered more than once and will receive multiple change events.

Parameters:

listener - The listener to add.

addListener

public void addListener(MultisetChangeListener<? super E> listener)

Adds a new SetMultimapChangeListener to this MultisetListenerHelper. If the same listener is added more than once, it will be registered more than once and will receive multiple change events.

Parameters:

listener - The listener to add.

fireValueChangedEvent

public void fireValueChangedEvent(MultisetChangeListener.Change<? extends E> change)

Notifies all attached InvalidationListeners and MultisetChangeListeners about the change.

Parameters:

change - The change to notify listeners about.

getSource

protected ObservableMultiset<E> getSource()

Returns the source ObservableMultiset this MultisetListenerHelper is bound to, which is used in change notifications.

Returns:

The source ObservableMultiset.

notifyInvalidationListeners

protected void notifyInvalidationListeners()

Notifies all registered InvalidationListeners.

notifyMultisetChangeListeners

protected void notifyMultisetChangeListeners(MultisetChangeListener.Change<? extends E> change)

Notifies the attached MultisetChangeListeners about the related change.

Parameters:

change - The applied change.

removeListener

public void removeListener(InvalidationListener listener)

Removes the given InvalidationListener from this MultisetListenerHelper. If its was registered more than once, removes one occurrence.

Parameters:

listener - The listener to remove.

removeListener

public void removeListener(MultisetChangeListener<? super E> listener)

Removes the given MultisetChangeListener from this MultisetListenerHelper. If its was registered more than once, removes one occurrence.

Parameters:

listener - The listener to remove.