gomp-20050608-branch/libjava/classpath/javax/accessibility/AccessibleHypertext.java

   1 /* AccessibleHypertext.java -- aids in accessibly rendering hypertext
   2    Copyright (C) 2000, 2002, 2005  Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package javax.accessibility;
  40
  41 /**
  42  * Objects which present hyperlinks in a document should implement this
  43  * interface.  Accessibility software can use the implementations of this
  44  * interface to aid the user in navigating the links.
  45  *
  46  * <p>The <code>AccessibleContext.getAccessibleText()</code> method
  47  * should return an instance of this interface only when it is supported.
  48  *
  49  * @author Eric Blake (ebb9@email.byu.edu)
  50  * @see Accessible
  51  * @see AccessibleContext
  52  * @see AccessibleText
  53  * @see AccessibleContext#getAccessibleText()
  54  * @since 1.2
  55  * @status updated to 1.4
  56  */
  57 public interface AccessibleHypertext extends AccessibleText
  58 {
  59   /**
  60    * Returns the number of links in the document, if any exist.
  61    *
  62    * @return the number of links, or -1
  63    */
  64   int getLinkCount();
  65
  66   /**
  67    * Returns link object denoted by the number <code>i</code> in this
  68    * document, or null if i is out of bounds.
  69    *
  70    * @param i the ith hyperlink of the document
  71    * @return link object denoted by <code>i</code>
  72    */
  73   AccessibleHyperlink getLink(int i);
  74
  75   /**
  76    * Returns the link index for this character index if it resides within
  77    * one of the hyperlinks of the document. If no association exists at that
  78    * character, or c is out of bounds, returns -1.
  79    *
  80    * @param c the character index
  81    * @return the link index, or -1
  82    */
  83   int getLinkIndex(int c);
  84 } // interface AccessibleHypertext