gomp-20050608-branch/libjava/classpath/external/w3c_dom/org/w3c/dom/html2/HTMLOptionsCollection.java

   1 /*
   2  * Copyright (c) 2003 World Wide Web Consortium,
   3  * (Massachusetts Institute of Technology, Institut National de
   4  * Recherche en Informatique et en Automatique, Keio University). All
   5  * Rights Reserved. This program is distributed under the W3C's Software
   6  * Intellectual Property License. This program is distributed in the
   7  * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
   8  * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
   9  * PURPOSE.
  10  * See W3C License http://www.w3.org/Consortium/Legal/ for more details.
  11  */
  12
  13 package org.w3c.dom.html2;
  14
  15 import org.w3c.dom.Node;
  16 import org.w3c.dom.DOMException;
  17
  18 /**
  19  *  An <code>HTMLOptionsCollection</code> is a list of nodes representing HTML
  20  * option element. An individual node may be accessed by either ordinal
  21  * index or the node's <code>name</code> or <code>id</code> attributes.
  22  * Collections in the HTML DOM are assumed to be live meaning that they are
  23  * automatically updated when the underlying document is changed.
  24  * <p>See also the <a href='http://www.w3.org/TR/2003/REC-DOM-Level-2-HTML-20030109'>Document Object Model (DOM) Level 2 HTML Specification</a>.
  25  * @since DOM Level 2
  26  */
  27 public interface HTMLOptionsCollection {
  28     /**
  29      *  This attribute specifies the length or size of the list.
  30      */
  31     public int getLength();
  32     /**
  33      *  This attribute specifies the length or size of the list.
  34      * @exception DOMException
  35      *    NOT_SUPPORTED_ERR: if setting the length is not allowed by the
  36      *   implementation.
  37      */
  38     public void setLength(int length)
  39                           throws DOMException;
  40
  41     /**
  42      *  This method retrieves a node specified by ordinal index. Nodes are
  43      * numbered in tree order (depth-first traversal order).
  44      * @param index The index of the node to be fetched. The index origin is
  45      *   0.
  46      * @return The <code>Node</code> at the corresponding position upon
  47      *   success. A value of <code>null</code> is returned if the index is
  48      *   out of range.
  49      */
  50     public Node item(int index);
  51
  52     /**
  53      * This method retrieves a <code>Node</code> using a name. It first
  54      * searches for a <code>Node</code> with a matching <code>id</code>
  55      * attribute. If it doesn't find one, it then searches for a
  56      * <code>Node</code> with a matching <code>name</code> attribute, but
  57      * only on those elements that are allowed a name attribute. This method
  58      * is case insensitive in HTML documents and case sensitive in XHTML
  59      * documents.
  60      * @param name The name of the <code>Node</code> to be fetched.
  61      * @return The <code>Node</code> with a <code>name</code> or
  62      *   <code>id</code> attribute whose value corresponds to the specified
  63      *   string. Upon failure (e.g., no node with this name exists), returns
  64      *   <code>null</code>.
  65      */
  66     public Node namedItem(String name);
  67
  68 }