/*******************************************************************************
* 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.list;
import org.eclipse.core.databinding.observable.IObservablesListener;
import org.eclipse.core.databinding.observable.ObservableEvent;
/**
* List change event describing an incremental change of an
* {@link IObservableList} object.
*
* @param <E>
* the type of the elements in this change event
*
* @since 1.0
*/
public class ListChangeEvent<E> extends ObservableEvent {
/**
*
*/
private static final long serialVersionUID = -9154315534258776672L;
static final Object TYPE = new Object();
/**
* Description of the change to the source observable list. Listeners must
* not change this field.
*/
public ListDiff<E> diff;
/**
* Always identical to <code>EventObject.source</code> but the type
* information is maintained.
*/
private IObservableList<E> typedSource;
/**
* Creates a new list change event.
*
* @param source
* the source observable list
* @param diff
* the list change
*/
public ListChangeEvent(IObservableList<E> source, ListDiff<E> diff) {
super(source);
this.typedSource = source;
this.diff = diff;
}
/**
* Returns the observable list from which this event originated.
*
* @return the observable list from which this event originated
*/
public IObservableList<E> getObservableList() {
return typedSource;
}
@SuppressWarnings("unchecked")
@Override
protected void dispatch(IObservablesListener listener) {
((IListChangeListener<E>) listener).handleListChange(this);
}
@Override
protected Object getListenerType() {
return TYPE;
}
}