/* * Copyright (c) 1997, 1999, 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; /** * This AccessibleSelection interface * provides the standard mechanism for an assistive technology to determine * what the current selected children are, as well as modify the selection set. * Any object that has children that can be selected should support * the AccessibleSelection interface.  Applications can determine if an object supports the * AccessibleSelection interface by first obtaining its AccessibleContext (see * {@link Accessible}) and then calling the * {@link AccessibleContext#getAccessibleSelection} method. * If the return value is not null, the object supports this interface. * * @see Accessible * @see Accessible#getAccessibleContext * @see AccessibleContext * @see AccessibleContext#getAccessibleSelection * * @author      Peter Korn * @author      Hans Muller * @author      Willie Walker */public interface AccessibleSelection {     /**     * Returns the number of Accessible children currently selected.     * If no children are selected, the return value will be 0.     *     * @return the number of items currently selected.     */     public int getAccessibleSelectionCount();     /**     * Returns an Accessible representing the specified selected child     * of the object.  If there isn't a selection, or there are     * fewer children selected than the integer passed in, the return     * value will be null.     * <p>Note that the index represents the i-th selected child, which     * is different from the i-th child.     *     * @param i the zero-based index of selected children     * @return the i-th selected child     * @see #getAccessibleSelectionCount     */     public Accessible getAccessibleSelection(int i);     /**     * Determines if the current child of this object is selected.     *     * @return true if the current child of this object is selected; else false.     * @param i the zero-based index of the child in this Accessible object.     * @see AccessibleContext#getAccessibleChild     */     public boolean isAccessibleChildSelected(int i);     /**     * Adds the specified Accessible child of the object to the object's     * selection.  If the object supports multiple selections,     * the specified child is added to any existing selection, otherwise     * it replaces any existing selection in the object.  If the     * specified child is already selected, this method has no effect.     *     * @param i the zero-based index of the child     * @see AccessibleContext#getAccessibleChild     */     public void addAccessibleSelection(int i);     /**     * Removes the specified child of the object from the object's     * selection.  If the specified item isn't currently selected, this     * method has no effect.     *     * @param i the zero-based index of the child     * @see AccessibleContext#getAccessibleChild     */     public void removeAccessibleSelection(int i);     /**     * Clears the selection in the object, so that no children in the     * object are selected.     */     public void clearAccessibleSelection();     /**     * Causes every child of the object to be selected     * if the object supports multiple selections.     */     public void selectAllAccessibleSelection();}