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/*******************************************************************************
* Copyright (c) 2006, 2007 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
******************************************************************************/
package org.eclipse.core.databinding.observable.map;
import org.eclipse.core.databinding.observable.ObservableEvent;
/**
* Map change event describing an incremental change of an
* {@link IObservableMap} object.
*
* @param <K>
* type of the keys to the map
* @param <V>
* type of the values in the map
* @since 1.0
*
*/
public class MapChangeEvent<K, V> extends
ObservableEvent<MapChangeEvent<K, V>, IMapChangeListener<K, V>> {
/**
*
*/
private static final long serialVersionUID = -8092347212410548463L;
static final Object TYPE = new Object();
/**
* Description of the change to the source observable map. Listeners must
* not change this field.
*/
public MapDiff<? extends K, ? extends V> diff;
/**
* Always identical to <code>EventObject.source</code> but the type
* information is maintained.
*/
private IObservableMap<K, V> typedSource;
/**
* Creates a new map change event
*
* @param source
* the source observable map
* @param diff
* the map change
*/
public MapChangeEvent(IObservableMap<K, V> source,
MapDiff<? extends K, ? extends V> diff) {
super(source);
this.typedSource = source;
this.diff = diff;
}
/**
* Returns the observable map from which this event originated.
*
* @return the observable map from which this event originated
*/
public IObservableMap<K, V> getObservableMap() {
return typedSource;
}
/**
* @since 1.5
*/
protected void dispatch(IMapChangeListener<K, V> listener) {
listener.handleMapChange(this);
}
protected Object getListenerType() {
return TYPE;
}
}
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