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 013package 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 */ 024public 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}