java.awt.event.ComponentAdapter Maven / Gradle / Ivy
/*
NOTICE
(c) 2005-2007 Sun Microsystems, Inc. All Rights Reserved.
Neither this file nor any files generated from it describe a complete
specification, and they may only be used as described below. For
example, no permission is given for you to incorporate this file, in
whole or in part, in an implementation of a Java specification.
Sun Microsystems Inc. owns the copyright in this file and it is provided
to you for informative, as opposed to normative, use. The file and any
files generated from it may be used to generate other informative
documentation, such as a unified set of documents of API signatures for
a platform that includes technologies expressed as Java APIs. The file
may also be used to produce "compilation stubs," which allow
applications to be compiled and validated for such platforms.
Any work generated from this file, such as unified javadocs or compiled
stub files, must be accompanied by this notice in its entirety.
This work corresponds to the API signatures of JSR 217: Personal Basis
Profile 1.1. In the event of a discrepency between this work and the
JSR 217 specification, which is available at
http://www.jcp.org/en/jsr/detail?id=217, the latter takes precedence.
*/
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.
*
* Extend this class to create a ComponentEvent listener
* and override the methods for the events of interest. (If you implement the
* ComponentListener 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.)
*
* Create a listener object using your class and then register it with a
* component using the component's addComponentListener
* method. When the component's size, location, or visibility
* changes, the relevant method in the listener object is invoked,
* and the ComponentEvent is passed to it.
*
* @see ComponentEvent
* @see ComponentListener
* @see Tutorial: Writing a Component Listener
* @see Reference: The Java Class Libraries (update file)
*
* @author Carl Quinn
* @version 1.15 01/23/03
* @since 1.1
*/
public abstract class ComponentAdapter implements ComponentListener
{
public ComponentAdapter() { }
/**
* 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) { }
}