/* * Copyright (c) 1997, 2005, 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.accessibility; /** * The AccessibleAction interface should be supported by any object * that can perform one or more actions.  This interface * provides the standard mechanism for an assistive technology to determine * what those actions are as well as tell the object to perform them. * Any object that can be manipulated should support this * interface.  Applications can determine if an object supports the * AccessibleAction interface by first obtaining its AccessibleContext (see * {@link Accessible}) and then calling the {@link AccessibleContext#getAccessibleAction} * method.  If the return value is not null, the object supports this interface. * * @see Accessible * @see Accessible#getAccessibleContext * @see AccessibleContext * @see AccessibleContext#getAccessibleAction * * @author      Peter Korn * @author      Hans Muller * @author      Willie Walker * @author      Lynn Monsanto */public interface AccessibleAction {     /**     * An action which causes a tree node to     * collapse if expanded and expand if collapsed.     * @since 1.5     */    public static final String TOGGLE_EXPAND =        new String ("toggle expand");     /**     * An action which increments a value.     * @since 1.5     */    public static final String INCREMENT =        new String ("increment");      /**     * An action which decrements a value.     * @since 1.5     */    public static final String DECREMENT =        new String ("decrement");     /**     * An action which causes a component to execute its default action.     * @since 1.6     */    public static final String CLICK = new String("click");     /**     * An action which causes a popup to become visible if it is hidden and     * hidden if it is visible.     * @since 1.6     */    public static final String TOGGLE_POPUP = new String("toggle popup");     /**     * Returns the number of accessible actions available in this object     * If there are more than one, the first one is considered the "default"     * action of the object.     *     * @return the zero-based number of Actions in this object     */    public int getAccessibleActionCount();     /**     * Returns a description of the specified action of the object.     *     * @param i zero-based index of the actions     * @return a String description of the action     * @see #getAccessibleActionCount     */    public String getAccessibleActionDescription(int i);     /**     * Performs the specified Action on the object     *     * @param i zero-based index of actions     * @return true if the action was performed; otherwise false.     * @see #getAccessibleActionCount     */    public boolean doAccessibleAction(int i);}