| /* AccessibleAction.java -- aids in accessibly performing actions |
| Copyright (C) 2000, 2002, 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package javax.accessibility; |
| |
| /** |
| * If an object implements this interface then it must be able to perform one |
| * or more actions. Accessibility software can use the implementations of this |
| * interface to discover and perform actions on an object. |
| * |
| * <p>The <code>AccessibleContext.getAccessibleAction()</code> method should |
| * return <code>null</code> if an object does not implement this interface. |
| * |
| * @author Eric Blake (ebb9@email.byu.edu) |
| * @see Accessible |
| * @see AccessibleContext |
| * @see AccessibleContext#getAccessibleAction() |
| * @since 1.2 |
| * @status updated to 1.4 |
| */ |
| public interface AccessibleAction |
| { |
| |
| /** |
| * The name of an action which decrements a value. |
| * |
| * @since 1.5 |
| */ |
| static final String DECREMENT = "decrement"; |
| |
| /** |
| * The name of an action which increments a value. |
| * |
| * @since 1.5 |
| */ |
| static final String INCREMENT = "increment"; |
| |
| /** |
| * The name of an action which toggles the expansion of a tree node. |
| * |
| * @since 1.5 |
| */ |
| static final String TOGGLE_EXPAND = "toggle expand"; |
| |
| /** |
| * Get the number possible actions for this object, with the zeroth |
| * representing the default action. |
| * |
| * @return the 0-based number of actions |
| */ |
| int getAccessibleActionCount(); |
| |
| /** |
| * Get a description for the specified action. Returns null if out of |
| * bounds. |
| * |
| * @param i the action to describe, 0-based |
| * @return description of the action |
| */ |
| String getAccessibleActionDescription(int i); |
| |
| /** |
| * Perform the specified action. Does nothing if out of bounds. |
| * |
| * @param i the action to perform, 0-based |
| * @return true if the action was performed |
| */ |
| boolean doAccessibleAction(int i); |
| } // interface AccessibleAction |