001/* 002 * Copyright (c) 2000 World Wide Web Consortium, 003 * (Massachusetts Institute of Technology, Institut National de 004 * Recherche en Informatique et en Automatique, Keio University). All 005 * Rights Reserved. This program is distributed under the W3C's Software 006 * Intellectual Property License. This program is distributed in the 007 * hope that it will be useful, but WITHOUT ANY WARRANTY; without even 008 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 009 * PURPOSE. 010 * See W3C License http://www.w3.org/Consortium/Legal/ for more details. 011 */ 012 013package org.w3c.dom; 014 015/** 016 * The <code>NodeList</code> interface provides the abstraction of an ordered 017 * collection of nodes, without defining or constraining how this collection 018 * is implemented. <code>NodeList</code> objects in the DOM are live. 019 * <p>The items in the <code>NodeList</code> are accessible via an integral 020 * index, starting from 0. 021 * <p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113'>Document Object Model (DOM) Level 2 Core Specification</a>. 022 */ 023public interface NodeList { 024 /** 025 * Returns the <code>index</code>th item in the collection. If 026 * <code>index</code> is greater than or equal to the number of nodes in 027 * the list, this returns <code>null</code>. 028 * @param indexIndex into the collection. 029 * @return The node at the <code>index</code>th position in the 030 * <code>NodeList</code>, or <code>null</code> if that is not a valid 031 * index. 032 */ 033 public Node item(int index); 034 035 /** 036 * The number of nodes in the list. The range of valid child node indices 037 * is 0 to <code>length-1</code> inclusive. 038 */ 039 public int getLength(); 040 041}