/* |
|
* Copyright (c) 1996, 2013, 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 |
|
* or visit www.oracle.com if you need additional information or have any |
|
* questions. |
|
*/ |
|
package java.awt.event; |
|
/** |
|
* An abstract adapter class for receiving component events. |
|
* The methods in this class are empty. This class exists as |
|
* convenience for creating listener objects. |
|
* <P> |
|
* Extend this class to create a <code>ComponentEvent</code> listener |
|
* and override the methods for the events of interest. (If you implement the |
|
* <code>ComponentListener</code> interface, you have to define all of |
|
* the methods in it. This abstract class defines null methods for them |
|
* all, so you can only have to define methods for events you care about.) |
|
* <P> |
|
* Create a listener object using your class and then register it with a |
|
* component using the component's <code>addComponentListener</code> |
|
* method. When the component's size, location, or visibility |
|
* changes, the relevant method in the listener object is invoked, |
|
* and the <code>ComponentEvent</code> is passed to it. |
|
* |
|
* @see ComponentEvent |
|
* @see ComponentListener |
|
* @see <a href="https://docs.oracle.com/javase/tutorial/uiswing/events/componentlistener.html">Tutorial: Writing a Component Listener</a> |
|
* |
|
* @author Carl Quinn |
|
* @since 1.1 |
|
*/ |
|
public abstract class ComponentAdapter implements ComponentListener { |
|
/** |
|
* Invoked when the component's size changes. |
|
*/ |
|
public void componentResized(ComponentEvent e) {} |
|
/** |
|
* Invoked when the component's position changes. |
|
*/ |
|
public void componentMoved(ComponentEvent e) {} |
|
/** |
|
* Invoked when the component has been made visible. |
|
*/ |
|
public void componentShown(ComponentEvent e) {} |
|
/** |
|
* Invoked when the component has been made invisible. |
|
*/ |
|
public void componentHidden(ComponentEvent e) {} |
|
} |