/* * Copyright (c) 1997, 2003, Oracle and/or its affiliates. All rights reserved. * 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 javax.swing; import java.awt.*;import java.awt.event.*; /** * Any component that can be placed into a menu should implement this interface. * This interface is used by <code>MenuSelectionManager</code> * to handle selection and navigation in menu hierarchies. * * @author Arnaud Weber */ public interface MenuElement {     /**     * Processes a mouse event. <code>event</code> is a <code>MouseEvent</code>     * with source being the receiving element's component.     * <code>path</code> is the path of the receiving element in the menu     * hierarchy including the receiving element itself.     * <code>manager</code> is the <code>MenuSelectionManager</code>     * for the menu hierarchy.     * This method should process the <code>MouseEvent</code> and change     * the menu selection if necessary     * by using <code>MenuSelectionManager</code>'s API     * Note: you do not have to forward the event to sub-components.     * This is done automatically by the <code>MenuSelectionManager</code>.     */    public void processMouseEvent(MouseEvent event,MenuElement path[],MenuSelectionManager manager);      /**     *  Process a key event.     */    public void processKeyEvent(KeyEvent event,MenuElement path[],MenuSelectionManager manager);     /**     * Call by the <code>MenuSelectionManager</code> when the     * <code>MenuElement</code> is added or remove from     * the menu selection.     */    public void menuSelectionChanged(boolean isIncluded);     /**     * This method should return an array containing the sub-elements for the receiving menu element     *     * @return an array of MenuElements     */    public MenuElement[] getSubElements();     /**     * This method should return the java.awt.Component used to paint the receiving element.     * The returned component will be used to convert events and detect if an event is inside     * a MenuElement's component.     *     * @return the Component value     */    public Component getComponent();}