28 /**
  29  * An abstract adapter class for receiving window events.
  30  * The methods in this class are empty. This class exists as
  31  * convenience for creating listener objects.
  32  * <P>
  33  * Extend this class to create a <code>WindowEvent</code> listener
  34  * and override the methods for the events of interest. (If you implement the
  35  * <code>WindowListener</code> interface, you have to define all of
  36  * the methods in it. This abstract class defines null methods for them
  37  * all, so you can only have to define methods for events you care about.)
  38  * <P>
  39  * Create a listener object using the extended class and then register it with
  40  * a Window using the window's <code>addWindowListener</code>
  41  * method. When the window's status changes by virtue of being opened,
  42  * closed, activated or deactivated, iconified or deiconified,
  43  * the relevant method in the listener
  44  * object is invoked, and the <code>WindowEvent</code> is passed to it.
  45  *
  46  * @see WindowEvent
  47  * @see WindowListener
  48  * @see <a href="http://java.sun.com/docs/books/tutorial/post1.0/ui/windowlistener.html">Tutorial: Writing a Window Listener</a>
  49  *
  50  * @author Carl Quinn
  51  * @author Amy Fowler
  52  * @author David Mendenhall
  53  * @since 1.1
  54  */
  55 public abstract class WindowAdapter
  56     implements WindowListener, WindowStateListener, WindowFocusListener
  57 {
  58     /**
  59      * Invoked when a window has been opened.
  60      */
  61     public void windowOpened(WindowEvent e) {}
  62 
  63     /**
  64      * Invoked when a window is in the process of being closed.
  65      * The close operation can be overridden at this point.
  66      */
  67     public void windowClosing(WindowEvent e) {}
  68 

  28 /**
  29  * An abstract adapter class for receiving window events.
  30  * The methods in this class are empty. This class exists as
  31  * convenience for creating listener objects.
  32  * <P>
  33  * Extend this class to create a <code>WindowEvent</code> listener
  34  * and override the methods for the events of interest. (If you implement the
  35  * <code>WindowListener</code> interface, you have to define all of
  36  * the methods in it. This abstract class defines null methods for them
  37  * all, so you can only have to define methods for events you care about.)
  38  * <P>
  39  * Create a listener object using the extended class and then register it with
  40  * a Window using the window's <code>addWindowListener</code>
  41  * method. When the window's status changes by virtue of being opened,
  42  * closed, activated or deactivated, iconified or deiconified,
  43  * the relevant method in the listener
  44  * object is invoked, and the <code>WindowEvent</code> is passed to it.
  45  *
  46  * @see WindowEvent
  47  * @see WindowListener
  48  * @see <a href="http://docs.oracle.com/javase/tutorial/uiswing/events/windowlistener.html">Tutorial: Writing a Window Listener</a>
  49  *
  50  * @author Carl Quinn
  51  * @author Amy Fowler
  52  * @author David Mendenhall
  53  * @since 1.1
  54  */
  55 public abstract class WindowAdapter
  56     implements WindowListener, WindowStateListener, WindowFocusListener
  57 {
  58     /**
  59      * Invoked when a window has been opened.
  60      */
  61     public void windowOpened(WindowEvent e) {}
  62 
  63     /**
  64      * Invoked when a window is in the process of being closed.
  65      * The close operation can be overridden at this point.
  66      */
  67     public void windowClosing(WindowEvent e) {}
  68