DOMImplementationList.java revision 628:2bfaf29cc90b 
1/*
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24
25/*
26 * This file is available under and governed by the GNU General Public
27 * License version 2 only, as published by the Free Software Foundation.
28 * However, the following notice accompanied the original version of this
29 * file and, per its terms, should not be removed:
30 *
31 * Copyright (c) 2004 World Wide Web Consortium,
32 *
33 * (Massachusetts Institute of Technology, European Research Consortium for
34 * Informatics and Mathematics, Keio University). All Rights Reserved. This
35 * work is distributed under the W3C(r) Software License [1] in the hope that
36 * it will be useful, but WITHOUT ANY WARRANTY; without even the implied
37 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
38 *
39 * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
40 */
41
42package org.w3c.dom;
43
44/**
45 *  The <code>DOMImplementationList</code> interface provides the abstraction
46 * of an ordered collection of DOM implementations, without defining or
47 * constraining how this collection is implemented. The items in the
48 * <code>DOMImplementationList</code> are accessible via an integral index,
49 * starting from 0.
50 * <p>See also the <a href='http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407'>Document Object Model (DOM) Level 3 Core Specification</a>.
51 * @since 1.5, DOM Level 3
52 */
53public interface DOMImplementationList {
54    /**
55     *  Returns the <code>index</code>th item in the collection. If
56     * <code>index</code> is greater than or equal to the number of
57     * <code>DOMImplementation</code>s in the list, this returns
58     * <code>null</code>.
59     * @param index Index into the collection.
60     * @return  The <code>DOMImplementation</code> at the <code>index</code>
61     *   th position in the <code>DOMImplementationList</code>, or
62     *   <code>null</code> if that is not a valid index.
63     */
64    public DOMImplementation item(int index);
65
66    /**
67     *  The number of <code>DOMImplementation</code>s in the list. The range
68     * of valid child node indices is 0 to <code>length-1</code> inclusive.
69     */
70    public int getLength();
71
72}
73