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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* published by the Free Software Foundation. Oracle designates this
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*
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* 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).
*
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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} listener
* and override the methods for the events of interest. (If you implement the
* {@code WindowListener} 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}
* 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} is passed to it.
*
* @see WindowEvent
* @see WindowListener
* @see <a href="https://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
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