/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

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/*

 * This file is available under and governed by the GNU General Public

 * License version 2 only, as published by the Free Software Foundation.

 * However, the following notice accompanied the original version of this

 * file and, per its terms, should not be removed:

 *

 * Copyright (c) 2004 World Wide Web Consortium,

 *

 * (Massachusetts Institute of Technology, European Research Consortium for

 * Informatics and Mathematics, Keio University). All Rights Reserved. This

 * work is distributed under the W3C(r) Software License [1] in the hope that

 * it will be useful, but WITHOUT ANY WARRANTY; without even the implied

 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

 *

 * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231

 */

package org.w3c.dom;

/**

 *  The <code>NameList</code> interface provides the abstraction of an ordered

 * collection of parallel pairs of name and namespace values (which could be

 * null values), without defining or constraining how this collection is

 * implemented. The items in the <code>NameList</code> are accessible via an

 * integral index, starting from 0.

 * <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>.

 * @since DOM Level 3

 */

public interface NameList {

    /**

     *  Returns the <code>index</code>th name item in the collection.

     * @param index Index into the collection.

     * @return  The name at the <code>index</code>th position in the

     *   <code>NameList</code>, or <code>null</code> if there is no name for

     *   the specified index or if the index is out of range.

     */

    public String getName(int index);

    /**

     *  Returns the <code>index</code>th namespaceURI item in the collection.

     * @param index Index into the collection.

     * @return  The namespace URI at the <code>index</code>th position in the

     *   <code>NameList</code>, or <code>null</code> if there is no name for

     *   the specified index or if the index is out of range.

     */

    public String getNamespaceURI(int index);

    /**

     *  The number of pairs (name and namespaceURI) in the list. The range of

     * valid child node indices is 0 to <code>length-1</code> inclusive.

     */

    public int getLength();

    /**

     *  Test if a name is part of this <code>NameList</code>.

     * @param str  The name to look for.

     * @return  <code>true</code> if the name has been found,

     *   <code>false</code> otherwise.

     */

    public boolean contains(String str);

    /**

     *  Test if the pair namespaceURI/name is part of this

     * <code>NameList</code>.

     * @param namespaceURI  The namespace URI to look for.

     * @param name  The name to look for.

     * @return  <code>true</code> if the pair namespaceURI/name has been

     *   found, <code>false</code> otherwise.

     */

    public boolean containsNS(String namespaceURI,

                              String name);

}