/* * Copyright (c) 2003, 2006, 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;  import java.util.*;import java.awt.*;import javax.swing.text.*;  /** * <P>The AccessibleExtendedText interface contains additional methods * not provided by the AccessibleText interface * * Applications can determine if an object supports the AccessibleExtendedText * interface by first obtaining its AccessibleContext (see {@link Accessible}) * and then calling the {@link AccessibleContext#getAccessibleText} method of * AccessibleContext.  If the return value is an instance of * AccessibleExtendedText, the object supports this interface. * * @see Accessible * @see Accessible#getAccessibleContext * @see AccessibleContext * @see AccessibleContext#getAccessibleText * * @author       Peter Korn * @author       Lynn Monsanto * @since 1.5 */public interface AccessibleExtendedText {     /**     * Constant used to indicate that the part of the text that should be     * retrieved is a line of text.     *     * @see AccessibleText#getAtIndex     * @see AccessibleText#getAfterIndex     * @see AccessibleText#getBeforeIndex     */    public static final int LINE = 4; // BugID: 4849720     /**     * Constant used to indicate that the part of the text that should be     * retrieved is contiguous text with the same text attributes.     *     * @see AccessibleText#getAtIndex     * @see AccessibleText#getAfterIndex     * @see AccessibleText#getBeforeIndex     */    public static final int ATTRIBUTE_RUN = 5; // BugID: 4849720     /**     * Returns the text between two indices     *     * @param startIndex the start index in the text     * @param endIndex the end index in the text     * @return the text string if the indices are valid.     * Otherwise, null is returned.     */    public String getTextRange(int startIndex, int endIndex);     /**     * Returns the <code>AccessibleTextSequence</code> at a given index.     *     * @param part the <code>CHARACTER</code>, <code>WORD</code>,     * <code>SENTENCE</code>, <code>LINE</code> or <code>ATTRIBUTE_RUN</code>     * to retrieve     * @param index an index within the text     * @return an <code>AccessibleTextSequence</code> specifying the text     * if part and index are valid.  Otherwise, null is returned.     *     * @see AccessibleText#CHARACTER     * @see AccessibleText#WORD     * @see AccessibleText#SENTENCE     */    public AccessibleTextSequence getTextSequenceAt(int part, int index);     /**     * Returns the <code>AccessibleTextSequence</code> after a given index.     *     * @param part the <code>CHARACTER</code>, <code>WORD</code>,     * <code>SENTENCE</code>, <code>LINE</code> or <code>ATTRIBUTE_RUN</code>     * to retrieve     * @param index an index within the text     * @return an <code>AccessibleTextSequence</code> specifying the text     * if part and index are valid.  Otherwise, null is returned.     *     * @see AccessibleText#CHARACTER     * @see AccessibleText#WORD     * @see AccessibleText#SENTENCE     */    public AccessibleTextSequence getTextSequenceAfter(int part, int index);     /**     * Returns the <code>AccessibleTextSequence</code> before a given index.     *     * @param part the <code>CHARACTER</code>, <code>WORD</code>,     * <code>SENTENCE</code>, <code>LINE</code> or <code>ATTRIBUTE_RUN</code>     * to retrieve     * @param index an index within the text     * @return an <code>AccessibleTextSequence</code> specifying the text     * if part and index are valid.  Otherwise, null is returned.     *     * @see AccessibleText#CHARACTER     * @see AccessibleText#WORD     * @see AccessibleText#SENTENCE     */    public AccessibleTextSequence getTextSequenceBefore(int part, int index);     /**     * Returns the bounding rectangle of the text between two indices.     *     * @param startIndex the start index in the text     * @param endIndex the end index in the text     * @return the bounding rectangle of the text if the indices are valid.     * Otherwise, null is returned.     */    public Rectangle getTextBounds(int startIndex, int endIndex);}