0N/A/*
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2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
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0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
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0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
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0N/A * You should have received a copy of the GNU General Public License version
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2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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0N/A */
0N/A
0N/Apackage java.awt.event;
0N/A
0N/Aimport java.util.EventListener;
0N/A
0N/A/**
0N/A * The listener interface for receiving <code>WindowEvents</code>, including
0N/A * <code>WINDOW_GAINED_FOCUS</code> and <code>WINDOW_LOST_FOCUS</code> events.
0N/A * The class that is interested in processing a <code>WindowEvent</code>
0N/A * either implements this interface (and
0N/A * all the methods it contains) or extends the abstract
0N/A * <code>WindowAdapter</code> class (overriding only the methods of interest).
0N/A * The listener object created from that class is then registered with a
0N/A * <code>Window</code>
0N/A * using the <code>Window</code>'s <code>addWindowFocusListener</code> method.
0N/A * When the <code>Window</code>'s
0N/A * status changes by virtue of it being opened, closed, activated, deactivated,
0N/A * iconified, or deiconified, or by focus being transfered into or out of the
0N/A * <code>Window</code>, the relevant method in the listener object is invoked,
0N/A * and the <code>WindowEvent</code> is passed to it.
0N/A *
0N/A * @author David Mendenhall
0N/A *
0N/A * @see WindowAdapter
0N/A * @see WindowEvent
0N/A * @see <a href="http://java.sun.com/docs/books/tutorial/post1.0/ui/windowlistener.html">Tutorial: Writing a Window Listener</a>
0N/A *
0N/A * @since 1.4
0N/A */
0N/Apublic interface WindowFocusListener extends EventListener {
0N/A
0N/A /**
0N/A * Invoked when the Window is set to be the focused Window, which means
0N/A * that the Window, or one of its subcomponents, will receive keyboard
0N/A * events.
0N/A */
0N/A public void windowGainedFocus(WindowEvent e);
0N/A
0N/A /**
0N/A * Invoked when the Window is no longer the focused Window, which means
0N/A * that keyboard events will no longer be delivered to the Window or any of
0N/A * its subcomponents.
0N/A */
0N/A public void windowLostFocus(WindowEvent e);
0N/A}