/*******************************************************************************
* Copyright (c) 2006, 2015 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
* Stefan Xenos <sxenos@gmail.com> - Bug 335792
* Stefan Xenos <sxenos@gmail.com> - Bug 474065
******************************************************************************/
package org.eclipse.core.databinding.observable.map;
import org.eclipse.core.databinding.observable.IObservablesListener;
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 {
/**
*
*/
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<K, V> diff;
/**
* Creates a new map change event
*
* @param source
* the source observable map
* @param diff
* the map change
*/
public MapChangeEvent(IObservableMap<K, V> source, MapDiff<K, V> diff) {
super(source);
this.diff = diff;
}
/**
* Returns the observable map from which this event originated.
*
* @return the observable map from which this event originated
*/
@SuppressWarnings("unchecked")
public IObservableMap<K, V> getObservableMap() {
return (IObservableMap<K, V>) getSource();
}
@SuppressWarnings("unchecked")
@Override
protected void dispatch(IObservablesListener listener) {
((IMapChangeListener<K, V>) listener).handleMapChange(this);
}
@Override
protected Object getListenerType() {
return TYPE;
}
}