TreeExpansionEvent


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  import java.util.EventObject  ;
14  
15  /**
16   * Event object describing a tree node being expanded
17   * or collapsed. The source of these events is the tree viewer.
18   *
19   * @see ITreeViewerListener
20   */
21  public class TreeExpansionEvent extends EventObject   {
22  
23      /**
24       * Generated serial version UID for this class.
25       * @since 3.1
26       */
27      private static final long serialVersionUID = 3618414930227835185L;
28      
29      /**
30       * The element that was expanded or collapsed.
31       */
32      private Object   element;
33  
34      /**
35       * Creates a new event for the given source and element.
36       *
37       * @param source the tree viewer
38       * @param element the element
39       */
40      public TreeExpansionEvent(AbstractTreeViewer source, Object   element) {
41          super(source);
42          this.element = element;
43      }
44  
45      /**
46       * Returns the element that got expanded or collapsed.
47       *
48       * @return the element
49       */
50      public Object   getElement() {
51          return element;
52      }
53  
54      /**
55       * Returns the originator of the event.
56       *
57       * @return the originating tree viewer
58       */
59      public AbstractTreeViewer getTreeViewer() {
60          return (AbstractTreeViewer) source;
61      }
62  }
63
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags