/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jface.viewers;

import java.util.EventObject;

/**
 * Event object describing a tree node being expanded
 * or collapsed. The source of these events is the tree viewer.
 *
 * @see ITreeViewerListener
 */
public class TreeExpansionEvent extends EventObject {

	/**
	 * The element that was expanded or collapsed.
	 */
	private Object element;
/**
 * Creates a new event for the given source and element.
 *
 * @param source the tree viewer
 * @param element the element
 */
public TreeExpansionEvent(AbstractTreeViewer source, Object element) {
	super(source);
	this.element = element;
}
/**
 * Returns the element that got expanded or collapsed.
 *
 * @return the element
 */
public Object getElement() {
	return element;
}
/**
 * Returns the originator of the event.
 *
 * @return the originating tree viewer
 */
public AbstractTreeViewer getTreeViewer() {
	return (AbstractTreeViewer) source;
}
}