/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * 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).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package java.awt.event;

import java.util.EventListener;

/**

 * The listener interface for receiving window events.

 * The class that is interested in processing a window event

 * either implements this interface (and all the methods it

 * contains) or extends the abstract <code>WindowAdapter</code> class

 * (overriding only the methods of interest).

 * The listener object created from that class is then registered 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.

 *

 * @author Carl Quinn

 *

 * @see WindowAdapter

 * @see WindowEvent

 * @see <a href="http://docs.oracle.com/javase/tutorial/uiswing/events/windowlistener.html">Tutorial: How to Write Window Listeners</a>

 *

 * @since 1.1

 */

public interface WindowListener extends EventListener {

    /**

     * Invoked the first time a window is made visible.

     */

    public void windowOpened(WindowEvent e);

    /**

     * Invoked when the user attempts to close the window

     * from the window's system menu.

     */

    public void windowClosing(WindowEvent e);

    /**

     * Invoked when a window has been closed as the result

     * of calling dispose on the window.

     */

    public void windowClosed(WindowEvent e);

    /**

     * Invoked when a window is changed from a normal to a

     * minimized state. For many platforms, a minimized window

     * is displayed as the icon specified in the window's

     * iconImage property.

     * @see java.awt.Frame#setIconImage

     */

    public void windowIconified(WindowEvent e);

    /**

     * Invoked when a window is changed from a minimized

     * to a normal state.

     */

    public void windowDeiconified(WindowEvent e);

    /**

     * Invoked when the Window is set to be the active Window. Only a Frame or

     * a Dialog can be the active Window. The native windowing system may

     * denote the active Window or its children with special decorations, such

     * as a highlighted title bar. The active Window is always either the

     * focused Window, or the first Frame or Dialog that is an owner of the

     * focused Window.

     */

    public void windowActivated(WindowEvent e);

    /**

     * Invoked when a Window is no longer the active Window. Only a Frame or a

     * Dialog can be the active Window. The native windowing system may denote

     * the active Window or its children with special decorations, such as a

     * highlighted title bar. The active Window is always either the focused

     * Window, or the first Frame or Dialog that is an owner of the focused

     * Window.

     */

    public void windowDeactivated(WindowEvent e);

}