/*******************************************************************************
* Copyright (c) 2000, 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
*******************************************************************************/
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 {
/**
* Generated serial version UID for this class.
* @since 3.1
*/
private static final long serialVersionUID = 3618414930227835185L;
/**
* 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;
}
}