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118 lines
3.9 KiB
Java
118 lines
3.9 KiB
Java
/*
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* Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package javax.accessibility;
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/**
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* The {@code AccessibleAction} interface should be supported by any object that
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* can perform one or more actions. This interface provides the standard
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* mechanism for an assistive technology to determine what those actions are as
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* well as tell the object to perform them. Any object that can be manipulated
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* should support this interface. Applications can determine if an object
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* supports the {@code AccessibleAction} interface by first obtaining its
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* {@code AccessibleContext} (see {@link Accessible}) and then calling the
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* {@link AccessibleContext#getAccessibleAction} method. If the return value is
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* not {@code null}, the object supports this interface.
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*
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* @author Peter Korn
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* @author Hans Muller
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* @author Willie Walker
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* @author Lynn Monsanto
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* @see Accessible
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* @see Accessible#getAccessibleContext
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* @see AccessibleContext
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* @see AccessibleContext#getAccessibleAction
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*/
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public interface AccessibleAction {
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/**
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* An action which causes a tree node to collapse if expanded and expand if
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* collapsed.
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*
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* @since 1.5
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*/
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public static final String TOGGLE_EXPAND =
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new String ("toggleexpand");
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/**
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* An action which increments a value.
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*
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* @since 1.5
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*/
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public static final String INCREMENT =
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new String ("increment");
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/**
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* An action which decrements a value.
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*
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* @since 1.5
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*/
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public static final String DECREMENT =
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new String ("decrement");
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/**
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* An action which causes a component to execute its default action.
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*
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* @since 1.6
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*/
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public static final String CLICK = new String("click");
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/**
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* An action which causes a popup to become visible if it is hidden and
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* hidden if it is visible.
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*
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* @since 1.6
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*/
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public static final String TOGGLE_POPUP = new String("toggle popup");
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/**
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* Returns the number of accessible actions available in this object If
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* there are more than one, the first one is considered the "default" action
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* of the object.
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*
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* @return the zero-based number of actions in this object
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*/
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public int getAccessibleActionCount();
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/**
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* Returns a description of the specified action of the object.
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*
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* @param i zero-based index of the actions
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* @return a {@code String} description of the action
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* @see #getAccessibleActionCount
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*/
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public String getAccessibleActionDescription(int i);
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/**
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* Performs the specified action on the object.
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*
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* @param i zero-based index of actions
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* @return {@code true} if the action was performed; otherwise {@code false}
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* @see #getAccessibleActionCount
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*/
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public boolean doAccessibleAction(int i);
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}
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