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WindowAdapter.java
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117 lines (106 loc) · 3.01 KB
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/*
* Copyright (c) 1996, 2013, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package java.awt.event;
/**
* An abstract adapter class for receiving window 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>WindowEvent</code> listener
* and override the methods for the events of interest. (If you implement the
* <code>WindowListener</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 the extended class and then register it with
* a Window using the window's <code>addWindowListener</code>
* method. When the window's status changes by virtue of being opened,
* closed, activated or deactivated, iconified or deiconified,
* the relevant method in the listener
* object is invoked, and the <code>WindowEvent</code> is passed to it.
*
* @see WindowEvent
* @see WindowListener
* @see <a href="http://docs.oracle.com/javase/tutorial/uiswing/events/windowlistener.html">Tutorial: Writing a Window Listener</a>
*
* @author Carl Quinn
* @author Amy Fowler
* @author David Mendenhall
* @since 1.1
*/
public abstract class WindowAdapter
implements WindowListener, WindowStateListener, WindowFocusListener
{
/**
* Invoked when a window has been opened.
*/
public void windowOpened(WindowEvent e) {}
/**
* Invoked when a window is in the process of being closed.
* The close operation can be overridden at this point.
*/
public void windowClosing(WindowEvent e) {}
/**
* Invoked when a window has been closed.
*/
public void windowClosed(WindowEvent e) {}
/**
* Invoked when a window is iconified.
*/
public void windowIconified(WindowEvent e) {}
/**
* Invoked when a window is de-iconified.
*/
public void windowDeiconified(WindowEvent e) {}
/**
* Invoked when a window is activated.
*/
public void windowActivated(WindowEvent e) {}
/**
* Invoked when a window is de-activated.
*/
public void windowDeactivated(WindowEvent e) {}
/**
* Invoked when a window state is changed.
* @since 1.4
*/
public void windowStateChanged(WindowEvent e) {}
/**
* Invoked when the Window is set to be the focused Window, which means
* that the Window, or one of its subcomponents, will receive keyboard
* events.
*
* @since 1.4
*/
public void windowGainedFocus(WindowEvent e) {}
/**
* Invoked when the Window is no longer the focused Window, which means
* that keyboard events will no longer be delivered to the Window or any of
* its subcomponents.
*
* @since 1.4
*/
public void windowLostFocus(WindowEvent e) {}
}