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Java > Open Source Codes > org > eclipse > jface > viewers > ITreeViewerListener


1 /*******************************************************************************
2  * Copyright (c) 2000, 2006 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.jface.viewers;
12
13 /**
14  * A listener which is notified when a tree viewer expands or collapses
15  * a node.
16  */
17 public interface ITreeViewerListener {
18     /**
19      * Notifies that a node in the tree has been collapsed.
20      *
21      * @param event event object describing details
22      */
23     public void treeCollapsed(TreeExpansionEvent event);
24
25     /**
26      * Notifies that a node in the tree has been expanded.
27      *
28      * @param event event object describing details
29      */
30     public void treeExpanded(TreeExpansionEvent event);
31 }
32
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