001 /*
002 * Copyright (c) 2004 World Wide Web Consortium,
003 *
004 * (Massachusetts Institute of Technology, European Research Consortium for
005 * Informatics and Mathematics, Keio University). All Rights Reserved. This
006 * work is distributed under the W3C(r) Software License [1] in the hope that
007 * it will be useful, but WITHOUT ANY WARRANTY; without even the implied
008 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
009 *
010 * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
011 */
012
013 package org.w3c.dom;
014
015 /**
016 * The <code>DOMImplementationList</code> interface provides the abstraction
017 * of an ordered collection of DOM implementations, without defining or
018 * constraining how this collection is implemented. The items in the
019 * <code>DOMImplementationList</code> are accessible via an integral index,
020 * starting from 0.
021 * <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>.
022 * @since DOM Level 3
023 */
024 public interface DOMImplementationList {
025 /**
026 * Returns the <code>index</code>th item in the collection. If
027 * <code>index</code> is greater than or equal to the number of
028 * <code>DOMImplementation</code>s in the list, this returns
029 * <code>null</code>.
030 * @param index Index into the collection.
031 * @return The <code>DOMImplementation</code> at the <code>index</code>
032 * th position in the <code>DOMImplementationList</code>, or
033 * <code>null</code> if that is not a valid index.
034 */
035 public DOMImplementation item(int index);
036
037 /**
038 * The number of <code>DOMImplementation</code>s in the list. The range
039 * of valid child node indices is 0 to <code>length-1</code> inclusive.
040 */
041 public int getLength();
042
043 }