01 /*
02 * Copyright 1997-1998 Sun Microsystems, Inc. All Rights Reserved.
03 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04 *
05 * This code is free software; you can redistribute it and/or modify it
06 * under the terms of the GNU General Public License version 2 only, as
07 * published by the Free Software Foundation. Sun designates this
08 * particular file as subject to the "Classpath" exception as provided
09 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25 package javax.swing.event;
26
27 import java.awt.event.*;
28 import java.awt.*;
29 import java.util.*;
30
31 import javax.swing.*;
32
33 /**
34 * AncestorListener
35 *
36 * Interface to support notification when changes occur to a JComponent or one
37 * of its ancestors. These include movement and when the component becomes
38 * visible or invisible, either by the setVisible() method or by being added
39 * or removed from the component hierarchy.
40 *
41 * @version 1.19 05/05/07
42 * @author Dave Moore
43 */
44 public interface AncestorListener extends EventListener {
45 /**
46 * Called when the source or one of its ancestors is made visible
47 * either by setVisible(true) being called or by its being
48 * added to the component hierarchy. The method is only called
49 * if the source has actually become visible. For this to be true
50 * all its parents must be visible and it must be in a hierarchy
51 * rooted at a Window
52 */
53 public void ancestorAdded(AncestorEvent event);
54
55 /**
56 * Called when the source or one of its ancestors is made invisible
57 * either by setVisible(false) being called or by its being
58 * remove from the component hierarchy. The method is only called
59 * if the source has actually become invisible. For this to be true
60 * at least one of its parents must by invisible or it is not in
61 * a hierarchy rooted at a Window
62 */
63 public void ancestorRemoved(AncestorEvent event);
64
65 /**
66 * Called when either the source or one of its ancestors is moved.
67 */
68 public void ancestorMoved(AncestorEvent event);
69
70 }
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