/*

 * 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.  Oracle designates this

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

 * by Oracle 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,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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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;

/**

 * Objects implementing the <code>NamedNodeMap</code> interface are used to

 * represent collections of nodes that can be accessed by name. Note that

 * <code>NamedNodeMap</code> does not inherit from <code>NodeList</code>;

 * <code>NamedNodeMaps</code> are not maintained in any particular order.

 * Objects contained in an object implementing <code>NamedNodeMap</code> may

 * also be accessed by an ordinal index, but this is simply to allow

 * convenient enumeration of the contents of a <code>NamedNodeMap</code>,

 * and does not imply that the DOM specifies an order to these Nodes.

 * <p><code>NamedNodeMap</code> objects in the DOM are live.

 * <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>.

 */

public interface NamedNodeMap {

    /**

     * Retrieves a node specified by name.

     * @param name The <code>nodeName</code> of a node to retrieve.

     * @return A <code>Node</code> (of any type) with the specified

     *   <code>nodeName</code>, or <code>null</code> if it does not identify

     *   any node in this map.

     */

    public Node getNamedItem(String name);

    /**

     * Adds a node using its <code>nodeName</code> attribute. If a node with

     * that name is already present in this map, it is replaced by the new

     * one. Replacing a node by itself has no effect.

     * <br>As the <code>nodeName</code> attribute is used to derive the name

     * which the node must be stored under, multiple nodes of certain types

     * (those that have a "special" string value) cannot be stored as the

     * names would clash. This is seen as preferable to allowing nodes to be

     * aliased.

     * @param arg A node to store in this map. The node will later be

     *   accessible using the value of its <code>nodeName</code> attribute.

     * @return If the new <code>Node</code> replaces an existing node the

     *   replaced <code>Node</code> is returned, otherwise <code>null</code>

     *   is returned.

     * @exception DOMException

     *   WRONG_DOCUMENT_ERR: Raised if <code>arg</code> was created from a

     *   different document than the one that created this map.

     *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this map is readonly.

     *   <br>INUSE_ATTRIBUTE_ERR: Raised if <code>arg</code> is an

     *   <code>Attr</code> that is already an attribute of another

     *   <code>Element</code> object. The DOM user must explicitly clone

     *   <code>Attr</code> nodes to re-use them in other elements.

     *   <br>HIERARCHY_REQUEST_ERR: Raised if an attempt is made to add a node

     *   doesn't belong in this NamedNodeMap. Examples would include trying

     *   to insert something other than an Attr node into an Element's map

     *   of attributes, or a non-Entity node into the DocumentType's map of

     *   Entities.

     */

    public Node setNamedItem(Node arg)

                             throws DOMException;

    /**

     * Removes a node specified by name. When this map contains the attributes

     * attached to an element, if the removed attribute is known to have a

     * default value, an attribute immediately appears containing the

     * default value as well as the corresponding namespace URI, local name,

     * and prefix when applicable.

     * @param name The <code>nodeName</code> of the node to remove.

     * @return The node removed from this map if a node with such a name

     *   exists.

     * @exception DOMException

     *   NOT_FOUND_ERR: Raised if there is no node named <code>name</code> in

     *   this map.

     *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this map is readonly.

     */

    public Node removeNamedItem(String name)

                                throws DOMException;

    /**

     * Returns the <code>index</code>th item in the map. If <code>index</code>

     * is greater than or equal to the number of nodes in this map, this

     * returns <code>null</code>.

     * @param index Index into this map.

     * @return The node at the <code>index</code>th position in the map, or

     *   <code>null</code> if that is not a valid index.

     */

    public Node item(int index);

    /**

     * The number of nodes in this map. The range of valid child node indices

     * is <code>0</code> to <code>length-1</code> inclusive.

     */

    public int getLength();

    /**

     * Retrieves a node specified by local name and namespace URI.

     * <br>Per [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]

     * , applications must use the value null as the namespaceURI parameter

     * for methods if they wish to have no namespace.

     * @param namespaceURI The namespace URI of the node to retrieve.

     * @param localName The local name of the node to retrieve.

     * @return A <code>Node</code> (of any type) with the specified local

     *   name and namespace URI, or <code>null</code> if they do not

     *   identify any node in this map.

     * @exception DOMException

     *   NOT_SUPPORTED_ERR: May be raised if the implementation does not

     *   support the feature "XML" and the language exposed through the

     *   Document does not support XML Namespaces (such as [<a href='http://www.w3.org/TR/1999/REC-html401-19991224/'>HTML 4.01</a>]).

     * @since DOM Level 2

     */

    public Node getNamedItemNS(String namespaceURI,

                               String localName)

                               throws DOMException;

    /**

     * Adds a node using its <code>namespaceURI</code> and

     * <code>localName</code>. If a node with that namespace URI and that

     * local name is already present in this map, it is replaced by the new

     * one. Replacing a node by itself has no effect.

     * <br>Per [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]

     * , applications must use the value null as the namespaceURI parameter

     * for methods if they wish to have no namespace.

     * @param arg A node to store in this map. The node will later be

     *   accessible using the value of its <code>namespaceURI</code> and

     *   <code>localName</code> attributes.

     * @return If the new <code>Node</code> replaces an existing node the

     *   replaced <code>Node</code> is returned, otherwise <code>null</code>

     *   is returned.

     * @exception DOMException

     *   WRONG_DOCUMENT_ERR: Raised if <code>arg</code> was created from a

     *   different document than the one that created this map.

     *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this map is readonly.

     *   <br>INUSE_ATTRIBUTE_ERR: Raised if <code>arg</code> is an

     *   <code>Attr</code> that is already an attribute of another

     *   <code>Element</code> object. The DOM user must explicitly clone

     *   <code>Attr</code> nodes to re-use them in other elements.

     *   <br>HIERARCHY_REQUEST_ERR: Raised if an attempt is made to add a node

     *   doesn't belong in this NamedNodeMap. Examples would include trying

     *   to insert something other than an Attr node into an Element's map

     *   of attributes, or a non-Entity node into the DocumentType's map of

     *   Entities.

     *   <br>NOT_SUPPORTED_ERR: May be raised if the implementation does not

     *   support the feature "XML" and the language exposed through the

     *   Document does not support XML Namespaces (such as [<a href='http://www.w3.org/TR/1999/REC-html401-19991224/'>HTML 4.01</a>]).

     * @since DOM Level 2

     */

    public Node setNamedItemNS(Node arg)

                               throws DOMException;

    /**

     * Removes a node specified by local name and namespace URI. A removed

     * attribute may be known to have a default value when this map contains

     * the attributes attached to an element, as returned by the attributes

     * attribute of the <code>Node</code> interface. If so, an attribute

     * immediately appears containing the default value as well as the

     * corresponding namespace URI, local name, and prefix when applicable.

     * <br>Per [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]

     * , applications must use the value null as the namespaceURI parameter

     * for methods if they wish to have no namespace.

     * @param namespaceURI The namespace URI of the node to remove.

     * @param localName The local name of the node to remove.

     * @return The node removed from this map if a node with such a local

     *   name and namespace URI exists.

     * @exception DOMException

     *   NOT_FOUND_ERR: Raised if there is no node with the specified

     *   <code>namespaceURI</code> and <code>localName</code> in this map.

     *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this map is readonly.

     *   <br>NOT_SUPPORTED_ERR: May be raised if the implementation does not

     *   support the feature "XML" and the language exposed through the

     *   Document does not support XML Namespaces (such as [<a href='http://www.w3.org/TR/1999/REC-html401-19991224/'>HTML 4.01</a>]).

     * @since DOM Level 2

     */

    public Node removeNamedItemNS(String namespaceURI,

                                  String localName)

                                  throws DOMException;

}