bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TreeExpansionEvent.java

package org.eclipse.jface.viewers;

/*
 * (c) Copyright IBM Corp. 2000, 2001.
 * All Rights Reserved.
 */
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;
}
}