| /* |
| * Copyright (c) 1999, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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| */ |
| |
| package java.awt.event; |
| |
| /** |
| * An abstract adapter class for receiving ancestor moved and resized events. |
| * The methods in this class are empty. This class exists as a |
| * convenience for creating listener objects. |
| * <p> |
| * Extend this class and override the method for the event of interest. (If |
| * you implement the <code>HierarchyBoundsListener</code> interface, you have |
| * to define both methods in it. This abstract class defines null methods for |
| * them both, so you only have to define the method for the event you care |
| * about.) |
| * <p> |
| * Create a listener object using your class and then register it with a |
| * Component using the Component's <code>addHierarchyBoundsListener</code> |
| * method. When the hierarchy to which the Component belongs changes by |
| * resize or movement of an ancestor, the relevant method in the listener |
| * object is invoked, and the <code>HierarchyEvent</code> is passed to it. |
| * |
| * @author David Mendenhall |
| * @see HierarchyBoundsListener |
| * @see HierarchyEvent |
| * @since 1.3 |
| */ |
| public abstract class HierarchyBoundsAdapter implements HierarchyBoundsListener |
| { |
| /** |
| * Called when an ancestor of the source is moved. |
| */ |
| public void ancestorMoved(HierarchyEvent e) {} |
| |
| /** |
| * Called when an ancestor of the source is resized. |
| */ |
| public void ancestorResized(HierarchyEvent e) {} |
| } |