J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-1998 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * 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 | * @author Dave Moore |
| 42 | */ |
| 43 | public interface AncestorListener extends EventListener { |
| 44 | /** |
| 45 | * Called when the source or one of its ancestors is made visible |
| 46 | * either by setVisible(true) being called or by its being |
| 47 | * added to the component hierarchy. The method is only called |
| 48 | * if the source has actually become visible. For this to be true |
| 49 | * all its parents must be visible and it must be in a hierarchy |
| 50 | * rooted at a Window |
| 51 | */ |
| 52 | public void ancestorAdded(AncestorEvent event); |
| 53 | |
| 54 | /** |
| 55 | * Called when the source or one of its ancestors is made invisible |
| 56 | * either by setVisible(false) being called or by its being |
| 57 | * remove from the component hierarchy. The method is only called |
| 58 | * if the source has actually become invisible. For this to be true |
| 59 | * at least one of its parents must by invisible or it is not in |
| 60 | * a hierarchy rooted at a Window |
| 61 | */ |
| 62 | public void ancestorRemoved(AncestorEvent event); |
| 63 | |
| 64 | /** |
| 65 | * Called when either the source or one of its ancestors is moved. |
| 66 | */ |
| 67 | public void ancestorMoved(AncestorEvent event); |
| 68 | |
| 69 | } |