/*
 * Copyright (c) 1997, 2017, 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 Accessible) and then calling the AccessibleContext.getAccessibleAction method. If the return value is not null, the object supports this interface.
Author:Peter Korn, Hans Muller, Willie Walker, Lynn Monsanto
See Also:
/** * The {@code 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 {@code AccessibleAction} interface by first obtaining its * {@code AccessibleContext} (see {@link Accessible}) and then calling the * {@link AccessibleContext#getAccessibleAction} method. If the return value is * not {@code null}, the object supports this interface. * * @author Peter Korn * @author Hans Muller * @author Willie Walker * @author Lynn Monsanto * @see Accessible * @see Accessible#getAccessibleContext * @see AccessibleContext * @see AccessibleContext#getAccessibleAction */
public interface AccessibleAction {
An action which causes a tree node to collapse if expanded and expand if collapsed.
Since:1.5
/** * 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 ("toggleexpand");
An action which increments a value.
Since:1.5
/** * 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
/** * 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
/** * 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
/** * 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.
Returns:the zero-based number of actions in this object
/** * 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.
Params:
  • i – zero-based index of the actions
See Also:
Returns:a String description of the action
/** * Returns a description of the specified action of the object. * * @param i zero-based index of the actions * @return a {@code String} description of the action * @see #getAccessibleActionCount */
public String getAccessibleActionDescription(int i);
Performs the specified action on the object.
Params:
  • i – zero-based index of actions
See Also:
Returns:true if the action was performed; otherwise false
/** * Performs the specified action on the object. * * @param i zero-based index of actions * @return {@code true} if the action was performed; otherwise {@code false} * @see #getAccessibleActionCount */
public boolean doAccessibleAction(int i); }