30 /**
31 * The listener interface for receiving <code>WindowEvents</code>, including
32 * <code>WINDOW_GAINED_FOCUS</code> and <code>WINDOW_LOST_FOCUS</code> events.
33 * The class that is interested in processing a <code>WindowEvent</code>
34 * either implements this interface (and
35 * all the methods it contains) or extends the abstract
36 * <code>WindowAdapter</code> class (overriding only the methods of interest).
37 * The listener object created from that class is then registered with a
38 * <code>Window</code>
39 * using the <code>Window</code>'s <code>addWindowFocusListener</code> method.
40 * When the <code>Window</code>'s
41 * status changes by virtue of it being opened, closed, activated, deactivated,
42 * iconified, or deiconified, or by focus being transfered into or out of the
43 * <code>Window</code>, the relevant method in the listener object is invoked,
44 * and the <code>WindowEvent</code> is passed to it.
45 *
46 * @author David Mendenhall
47 *
48 * @see WindowAdapter
49 * @see WindowEvent
50 * @see <a href="http://java.sun.com/docs/books/tutorial/post1.0/ui/windowlistener.html">Tutorial: Writing a Window Listener</a>
51 *
52 * @since 1.4
53 */
54 public interface WindowFocusListener extends EventListener {
55
56 /**
57 * Invoked when the Window is set to be the focused Window, which means
58 * that the Window, or one of its subcomponents, will receive keyboard
59 * events.
60 */
61 public void windowGainedFocus(WindowEvent e);
62
63 /**
64 * Invoked when the Window is no longer the focused Window, which means
65 * that keyboard events will no longer be delivered to the Window or any of
66 * its subcomponents.
67 */
68 public void windowLostFocus(WindowEvent e);
69 }
|
30 /**
31 * The listener interface for receiving <code>WindowEvents</code>, including
32 * <code>WINDOW_GAINED_FOCUS</code> and <code>WINDOW_LOST_FOCUS</code> events.
33 * The class that is interested in processing a <code>WindowEvent</code>
34 * either implements this interface (and
35 * all the methods it contains) or extends the abstract
36 * <code>WindowAdapter</code> class (overriding only the methods of interest).
37 * The listener object created from that class is then registered with a
38 * <code>Window</code>
39 * using the <code>Window</code>'s <code>addWindowFocusListener</code> method.
40 * When the <code>Window</code>'s
41 * status changes by virtue of it being opened, closed, activated, deactivated,
42 * iconified, or deiconified, or by focus being transfered into or out of the
43 * <code>Window</code>, the relevant method in the listener object is invoked,
44 * and the <code>WindowEvent</code> is passed to it.
45 *
46 * @author David Mendenhall
47 *
48 * @see WindowAdapter
49 * @see WindowEvent
50 * @see <a href="http://docs.oracle.com/javase/tutorial/uiswing/events/windowlistener.html">Tutorial: Writing a Window Listener</a>
51 *
52 * @since 1.4
53 */
54 public interface WindowFocusListener extends EventListener {
55
56 /**
57 * Invoked when the Window is set to be the focused Window, which means
58 * that the Window, or one of its subcomponents, will receive keyboard
59 * events.
60 */
61 public void windowGainedFocus(WindowEvent e);
62
63 /**
64 * Invoked when the Window is no longer the focused Window, which means
65 * that keyboard events will no longer be delivered to the Window or any of
66 * its subcomponents.
67 */
68 public void windowLostFocus(WindowEvent e);
69 }
|