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   * 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
   * or visit www.oracle.com if you need additional information or have any
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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;
  
  import org.w3c.dom.Attr;
  import org.w3c.dom.CDATASection;
  import org.w3c.dom.Comment;
  import org.w3c.dom.DOMConfiguration;
  import org.w3c.dom.DOMException;
  import org.w3c.dom.DOMImplementation;
  import org.w3c.dom.DocumentFragment;
  import org.w3c.dom.DocumentType;
  import org.w3c.dom.Element;
  import org.w3c.dom.EntityReference;
  import org.w3c.dom.Node;
  import org.w3c.dom.NodeList;
  import org.w3c.dom.ProcessingInstruction;
  import org.w3c.dom.Text;
  
  /**
   * The <code>Document</code> interface represents the entire HTML or XML
   * document. Conceptually, it is the root of the document tree, and provides
   * the primary access to the document's data.
   * <p>Since elements, text nodes, comments, processing instructions, etc.
   * cannot exist outside the context of a <code>Document</code>, the
   * <code>Document</code> interface also contains the factory methods needed
   * to create these objects. The <code>Node</code> objects created have a
   * <code>ownerDocument</code> attribute which associates them with the
   * <code>Document</code> within whose context they were created.
   * <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 Document extends org.w3c.dom.Node {
      /**
       * The Document Type Declaration (see <code>DocumentType</code>)
       * associated with this document. For XML documents without a document
       * type declaration this returns <code>null</code>. For HTML documents,
       * a <code>DocumentType</code> object may be returned, independently of
       * the presence or absence of document type declaration in the HTML
       * document.
       * <br>This provides direct access to the <code>DocumentType</code> node,
       * child node of this <code>Document</code>. This node can be set at
       * document creation time and later changed through the use of child
       * nodes manipulation methods, such as <code>Node.insertBefore</code>,
       * or <code>Node.replaceChild</code>. Note, however, that while some
       * implementations may instantiate different types of
       * <code>Document</code> objects supporting additional features than the
       * "Core", such as "HTML" [<a href='http://www.w3.org/TR/2003/REC-DOM-Level-2-HTML-20030109'>DOM Level 2 HTML</a>]
       * , based on the <code>DocumentType</code> specified at creation time,
       * changing it afterwards is very unlikely to result in a change of the
       * features supported.
       *
       * @since DOM Level 3
       */
      public DocumentType getDoctype();
  
      /**
       * The <code>DOMImplementation</code> object that handles this document. A
       * DOM application may use objects from multiple implementations.
       */
      public DOMImplementation getImplementation();
  
      /**
       * This is a convenience attribute that allows direct access to the child
       * node that is the document element of the document.
       */
      public org.w3c.dom.Element getDocumentElement();
  
      /**
       * Creates an element of the type specified. Note that the instance
       * returned implements the <code>Element</code> interface, so attributes
       * can be specified directly on the returned object.
       * <br>In addition, if there are known attributes with default values,
       * <code>Attr</code> nodes representing them are automatically created
       * and attached to the element.
       * <br>To create an element with a qualified name and namespace URI, use
       * the <code>createElementNS</code> method.
       * @param tagName The name of the element type to instantiate. For XML,
       *   this is case-sensitive, otherwise it depends on the
       *   case-sensitivity of the markup language in use. In that case, the
       *   name is mapped to the canonical form of that markup by the DOM
       *   implementation.
       * @return A new <code>Element</code> object with the
       *   <code>nodeName</code> attribute set to <code>tagName</code>, and
       *   <code>localName</code>, <code>prefix</code>, and
       *   <code>namespaceURI</code> set to <code>null</code>.
       * @exception org.w3c.dom.DOMException
       *   INVALID_CHARACTER_ERR: Raised if the specified name is not an XML
       *   name according to the XML version in use specified in the
       *   <code>Document.xmlVersion</code> attribute.
       */
      public org.w3c.dom.Element createElement(String tagName)
                                   throws org.w3c.dom.DOMException;
  
      /**
       * Creates an empty <code>DocumentFragment</code> object.
       * @return A new <code>DocumentFragment</code>.
       */
      public DocumentFragment createDocumentFragment();
  
      /**
       * Creates a <code>Text</code> node given the specified string.
       * @param data The data for the node.
       * @return The new <code>Text</code> object.
       */
      public Text createTextNode(String data);
  
      /**
       * Creates a <code>Comment</code> node given the specified string.
       * @param data The data for the node.
       * @return The new <code>Comment</code> object.
       */
      public Comment createComment(String data);
  
      /**
       * Creates a <code>CDATASection</code> node whose value is the specified
       * string.
       * @param data The data for the <code>CDATASection</code> contents.
       * @return The new <code>CDATASection</code> object.
       * @exception org.w3c.dom.DOMException
       *   NOT_SUPPORTED_ERR: Raised if this document is an HTML document.
       */
      public CDATASection createCDATASection(String data)
                                             throws org.w3c.dom.DOMException;
  
      /**
       * Creates a <code>ProcessingInstruction</code> node given the specified
       * name and data strings.
       * @param target The target part of the processing instruction.Unlike
       *   <code>Document.createElementNS</code> or
       *   <code>Document.createAttributeNS</code>, no namespace well-formed
       *   checking is done on the target name. Applications should invoke
       *   <code>Document.normalizeDocument()</code> with the parameter "
       *   namespaces" set to <code>true</code> in order to ensure that the
       *   target name is namespace well-formed.
       * @param data The data for the node.
       * @return The new <code>ProcessingInstruction</code> object.
       * @exception org.w3c.dom.DOMException
       *   INVALID_CHARACTER_ERR: Raised if the specified target is not an XML
       *   name according to the XML version in use specified in the
       *   <code>Document.xmlVersion</code> attribute.
       *   <br>NOT_SUPPORTED_ERR: Raised if this document is an HTML document.
       */
      public ProcessingInstruction createProcessingInstruction(String target,
                                                               String data)
                                                               throws org.w3c.dom.DOMException;
  
      /**
       * Creates an <code>Attr</code> of the given name. Note that the
       * <code>Attr</code> instance can then be set on an <code>Element</code>
       * using the <code>setAttributeNode</code> method.
       * <br>To create an attribute with a qualified name and namespace URI, use
       * the <code>createAttributeNS</code> method.
       * @param name The name of the attribute.
       * @return A new <code>Attr</code> object with the <code>nodeName</code>
       *   attribute set to <code>name</code>, and <code>localName</code>,
       *   <code>prefix</code>, and <code>namespaceURI</code> set to
       *   <code>null</code>. The value of the attribute is the empty string.
       * @exception org.w3c.dom.DOMException
       *   INVALID_CHARACTER_ERR: Raised if the specified name is not an XML
       *   name according to the XML version in use specified in the
       *   <code>Document.xmlVersion</code> attribute.
       */
      public org.w3c.dom.Attr createAttribute(String name)
                                  throws org.w3c.dom.DOMException;
  
      /**
       * Creates an <code>EntityReference</code> object. In addition, if the
       * referenced entity is known, the child list of the
       * <code>EntityReference</code> node is made the same as that of the
       * corresponding <code>Entity</code> node.
       * <p ><b>Note:</b> If any descendant of the <code>Entity</code> node has
       * an unbound namespace prefix, the corresponding descendant of the
       * created <code>EntityReference</code> node is also unbound; (its
       * <code>namespaceURI</code> is <code>null</code>). The DOM Level 2 and
       * 3 do not support any mechanism to resolve namespace prefixes in this
       * case.
       * @param name The name of the entity to reference.Unlike
       *   <code>Document.createElementNS</code> or
       *   <code>Document.createAttributeNS</code>, no namespace well-formed
       *   checking is done on the entity name. Applications should invoke
       *   <code>Document.normalizeDocument()</code> with the parameter "
       *   namespaces" set to <code>true</code> in order to ensure that the
       *   entity name is namespace well-formed.
       * @return The new <code>EntityReference</code> object.
       * @exception org.w3c.dom.DOMException
       *   INVALID_CHARACTER_ERR: Raised if the specified name is not an XML
       *   name according to the XML version in use specified in the
       *   <code>Document.xmlVersion</code> attribute.
       *   <br>NOT_SUPPORTED_ERR: Raised if this document is an HTML document.
       */
      public EntityReference createEntityReference(String name)
                                                   throws org.w3c.dom.DOMException;
  
      /**
       * Returns a <code>NodeList</code> of all the <code>Elements</code> in
       * document order with a given tag name and are contained in the
       * document.
       * @param tagname  The name of the tag to match on. The special value "*"
       *   matches all tags. For XML, the <code>tagname</code> parameter is
       *   case-sensitive, otherwise it depends on the case-sensitivity of the
       *   markup language in use.
       * @return A new <code>NodeList</code> object containing all the matched
       *   <code>Elements</code>.
       */
      public org.w3c.dom.NodeList getElementsByTagName(String tagname);
  
      /**
       * Imports a node from another document to this document, without altering
       * or removing the source node from the original document; this method
       * creates a new copy of the source node. The returned node has no
       * parent; (<code>parentNode</code> is <code>null</code>).
       * <br>For all nodes, importing a node creates a node object owned by the
       * importing document, with attribute values identical to the source
       * node's <code>nodeName</code> and <code>nodeType</code>, plus the
       * attributes related to namespaces (<code>prefix</code>,
       * <code>localName</code>, and <code>namespaceURI</code>). As in the
       * <code>cloneNode</code> operation, the source node is not altered.
       * User data associated to the imported node is not carried over.
       * However, if any <code>UserDataHandlers</code> has been specified
       * along with the associated data these handlers will be called with the
       * appropriate parameters before this method returns.
       * <br>Additional information is copied as appropriate to the
       * <code>nodeType</code>, attempting to mirror the behavior expected if
       * a fragment of XML or HTML source was copied from one document to
       * another, recognizing that the two documents may have different DTDs
       * in the XML case. The following list describes the specifics for each
       * type of node.
       * <dl>
       * <dt>ATTRIBUTE_NODE</dt>
       * <dd>The <code>ownerElement</code> attribute
       * is set to <code>null</code> and the <code>specified</code> flag is
       * set to <code>true</code> on the generated <code>Attr</code>. The
       * descendants of the source <code>Attr</code> are recursively imported
       * and the resulting nodes reassembled to form the corresponding subtree.
       * Note that the <code>deep</code> parameter has no effect on
       * <code>Attr</code> nodes; they always carry their children with them
       * when imported.</dd>
       * <dt>DOCUMENT_FRAGMENT_NODE</dt>
       * <dd>If the <code>deep</code> option
       * was set to <code>true</code>, the descendants of the source
       * <code>DocumentFragment</code> are recursively imported and the
       * resulting nodes reassembled under the imported
       * <code>DocumentFragment</code> to form the corresponding subtree.
       * Otherwise, this simply generates an empty
       * <code>DocumentFragment</code>.</dd>
       * <dt>DOCUMENT_NODE</dt>
       * <dd><code>Document</code>
       * nodes cannot be imported.</dd>
       * <dt>DOCUMENT_TYPE_NODE</dt>
       * <dd><code>DocumentType</code>
       * nodes cannot be imported.</dd>
       * <dt>ELEMENT_NODE</dt>
       * <dd><em>Specified</em> attribute nodes of the source element are imported, and the generated
       * <code>Attr</code> nodes are attached to the generated
       * <code>Element</code>. Default attributes are <em>not</em> copied, though if the document being imported into defines default
       * attributes for this element name, those are assigned. If the
       * <code>importNode</code> <code>deep</code> parameter was set to
       * <code>true</code>, the descendants of the source element are
       * recursively imported and the resulting nodes reassembled to form the
       * corresponding subtree.</dd>
       * <dt>ENTITY_NODE</dt>
       * <dd><code>Entity</code> nodes can be
       * imported, however in the current release of the DOM the
       * <code>DocumentType</code> is readonly. Ability to add these imported
       * nodes to a <code>DocumentType</code> will be considered for addition
       * to a future release of the DOM.On import, the <code>publicId</code>,
       * <code>systemId</code>, and <code>notationName</code> attributes are
       * copied. If a <code>deep</code> import is requested, the descendants
       * of the the source <code>Entity</code> are recursively imported and
       * the resulting nodes reassembled to form the corresponding subtree.</dd>
       * <dt>
       * ENTITY_REFERENCE_NODE</dt>
       * <dd>Only the <code>EntityReference</code> itself is
       * copied, even if a <code>deep</code> import is requested, since the
       * source and destination documents might have defined the entity
       * differently. If the document being imported into provides a
       * definition for this entity name, its value is assigned.</dd>
       * <dt>NOTATION_NODE</dt>
       * <dd>
       * <code>Notation</code> nodes can be imported, however in the current
       * release of the DOM the <code>DocumentType</code> is readonly. Ability
       * to add these imported nodes to a <code>DocumentType</code> will be
       * considered for addition to a future release of the DOM.On import, the
       * <code>publicId</code> and <code>systemId</code> attributes are copied.
       * Note that the <code>deep</code> parameter has no effect on this type
       * of nodes since they cannot have any children.</dd>
       * <dt>
       * PROCESSING_INSTRUCTION_NODE</dt>
       * <dd>The imported node copies its
       * <code>target</code> and <code>data</code> values from those of the
       * source node.Note that the <code>deep</code> parameter has no effect
       * on this type of nodes since they cannot have any children.</dd>
       * <dt>TEXT_NODE,
       * CDATA_SECTION_NODE, COMMENT_NODE</dt>
       * <dd>These three types of nodes inheriting
       * from <code>CharacterData</code> copy their <code>data</code> and
       * <code>length</code> attributes from those of the source node.Note
       * that the <code>deep</code> parameter has no effect on these types of
       * nodes since they cannot have any children.</dd>
       * </dl>
       * @param importedNode The node to import.
       * @param deep If <code>true</code>, recursively import the subtree under
       *   the specified node; if <code>false</code>, import only the node
       *   itself, as explained above. This has no effect on nodes that cannot
       *   have any children, and on <code>Attr</code>, and
       *   <code>EntityReference</code> nodes.
       * @return The imported node that belongs to this <code>Document</code>.
       * @exception org.w3c.dom.DOMException
       *   NOT_SUPPORTED_ERR: Raised if the type of node being imported is not
       *   supported.
       *   <br>INVALID_CHARACTER_ERR: Raised if one of the imported names is not
       *   an XML name according to the XML version in use specified in the
       *   <code>Document.xmlVersion</code> attribute. This may happen when
       *   importing an XML 1.1 [<a href='http://www.w3.org/TR/2004/REC-xml11-20040204/'>XML 1.1</a>] element
       *   into an XML 1.0 document, for instance.
       * @since DOM Level 2
       */
      public org.w3c.dom.Node importNode(org.w3c.dom.Node importedNode,
                                         boolean deep)
                             throws org.w3c.dom.DOMException;
  
      /**
       * Creates an element of the given qualified 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 <code>null</code> as the
       * namespaceURI parameter for methods if they wish to have no namespace.
       * @param namespaceURI The namespace URI of the element to create.
       * @param qualifiedName The qualified name of the element type to
       *   instantiate.
       * @return A new <code>Element</code> object with the following
       *   attributes:
       * <table border='1' cellpadding='3'>
       * <tr>
       * <th>Attribute</th>
       * <th>Value</th>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'><code>Node.nodeName</code></td>
       * <td valign='top' rowspan='1' colspan='1'>
       *   <code>qualifiedName</code></td>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'><code>Node.namespaceURI</code></td>
       * <td valign='top' rowspan='1' colspan='1'>
       *   <code>namespaceURI</code></td>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'><code>Node.prefix</code></td>
       * <td valign='top' rowspan='1' colspan='1'>prefix, extracted
       *   from <code>qualifiedName</code>, or <code>null</code> if there is
       *   no prefix</td>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'><code>Node.localName</code></td>
       * <td valign='top' rowspan='1' colspan='1'>local name, extracted from
       *   <code>qualifiedName</code></td>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'><code>Element.tagName</code></td>
       * <td valign='top' rowspan='1' colspan='1'>
       *   <code>qualifiedName</code></td>
       * </tr>
       * </table>
       * @exception org.w3c.dom.DOMException
       *   INVALID_CHARACTER_ERR: Raised if the specified
       *   <code>qualifiedName</code> is not an XML name according to the XML
       *   version in use specified in the <code>Document.xmlVersion</code>
       *   attribute.
       *   <br>NAMESPACE_ERR: Raised if the <code>qualifiedName</code> is a
       *   malformed qualified name, if the <code>qualifiedName</code> has a
       *   prefix and the <code>namespaceURI</code> is <code>null</code>, or
       *   if the <code>qualifiedName</code> has a prefix that is "xml" and
       *   the <code>namespaceURI</code> is different from "<a href='http://www.w3.org/XML/1998/namespace'>
       *   http://www.w3.org/XML/1998/namespace</a>" [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]
       *   , or if the <code>qualifiedName</code> or its prefix is "xmlns" and
       *   the <code>namespaceURI</code> is different from "<a href='http://www.w3.org/2000/xmlns/'>http://www.w3.org/2000/xmlns/</a>", or if the <code>namespaceURI</code> is "<a href='http://www.w3.org/2000/xmlns/'>http://www.w3.org/2000/xmlns/</a>" and neither the <code>qualifiedName</code> nor its prefix is "xmlns".
       *   <br>NOT_SUPPORTED_ERR: Always thrown if the current document does not
       *   support the <code>"XML"</code> feature, since namespaces were
       *   defined by XML.
       * @since DOM Level 2
       */
      public org.w3c.dom.Element createElementNS(String namespaceURI,
                                                 String qualifiedName)
                                     throws org.w3c.dom.DOMException;
  
      /**
       * Creates an attribute of the given qualified 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 <code>null</code> as the
       * <code>namespaceURI</code> parameter for methods if they wish to have
       * no namespace.
       * @param namespaceURI The namespace URI of the attribute to create.
       * @param qualifiedName The qualified name of the attribute to
       *   instantiate.
       * @return A new <code>Attr</code> object with the following attributes:
       * <table border='1' cellpadding='3'>
       * <tr>
       * <th>
       *   Attribute</th>
       * <th>Value</th>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'><code>Node.nodeName</code></td>
       * <td valign='top' rowspan='1' colspan='1'>qualifiedName</td>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'>
       *   <code>Node.namespaceURI</code></td>
       * <td valign='top' rowspan='1' colspan='1'><code>namespaceURI</code></td>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'>
       *   <code>Node.prefix</code></td>
       * <td valign='top' rowspan='1' colspan='1'>prefix, extracted from
       *   <code>qualifiedName</code>, or <code>null</code> if there is no
       *   prefix</td>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'><code>Node.localName</code></td>
       * <td valign='top' rowspan='1' colspan='1'>local name, extracted from
       *   <code>qualifiedName</code></td>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'><code>Attr.name</code></td>
       * <td valign='top' rowspan='1' colspan='1'>
       *   <code>qualifiedName</code></td>
       * </tr>
       * <tr>
       * <td valign='top' rowspan='1' colspan='1'><code>Node.nodeValue</code></td>
       * <td valign='top' rowspan='1' colspan='1'>the empty
       *   string</td>
       * </tr>
       * </table>
       * @exception org.w3c.dom.DOMException
       *   INVALID_CHARACTER_ERR: Raised if the specified
       *   <code>qualifiedName</code> is not an XML name according to the XML
       *   version in use specified in the <code>Document.xmlVersion</code>
       *   attribute.
       *   <br>NAMESPACE_ERR: Raised if the <code>qualifiedName</code> is a
       *   malformed qualified name, if the <code>qualifiedName</code> has a
       *   prefix and the <code>namespaceURI</code> is <code>null</code>, if
       *   the <code>qualifiedName</code> has a prefix that is "xml" and the
       *   <code>namespaceURI</code> is different from "<a href='http://www.w3.org/XML/1998/namespace'>
       *   http://www.w3.org/XML/1998/namespace</a>", if the <code>qualifiedName</code> or its prefix is "xmlns" and the
       *   <code>namespaceURI</code> is different from "<a href='http://www.w3.org/2000/xmlns/'>http://www.w3.org/2000/xmlns/</a>", or if the <code>namespaceURI</code> is "<a href='http://www.w3.org/2000/xmlns/'>http://www.w3.org/2000/xmlns/</a>" and neither the <code>qualifiedName</code> nor its prefix is "xmlns".
       *   <br>NOT_SUPPORTED_ERR: Always thrown if the current document does not
       *   support the <code>"XML"</code> feature, since namespaces were
       *   defined by XML.
       * @since DOM Level 2
       */
      public Attr createAttributeNS(String namespaceURI,
                                    String qualifiedName)
                                    throws org.w3c.dom.DOMException;
  
      /**
       * Returns a <code>NodeList</code> of all the <code>Elements</code> with a
       * given local name and namespace URI in document order.
       * @param namespaceURI The namespace URI of the elements to match on. The
       *   special value <code>"*"</code> matches all namespaces.
       * @param localName The local name of the elements to match on. The
       *   special value "*" matches all local names.
       * @return A new <code>NodeList</code> object containing all the matched
       *   <code>Elements</code>.
       * @since DOM Level 2
       */
      public NodeList getElementsByTagNameNS(String namespaceURI,
                                             String localName);
  
      /**
       * Returns the <code>Element</code> that has an ID attribute with the
       * given value. If no such element exists, this returns <code>null</code>
       * . If more than one element has an ID attribute with that value, what
       * is returned is undefined.
       * <br> The DOM implementation is expected to use the attribute
       * <code>Attr.isId</code> to determine if an attribute is of type ID.
       * <p ><b>Note:</b> Attributes with the name "ID" or "id" are not of type
       * ID unless so defined.
       * @param elementId The unique <code>id</code> value for an element.
       * @return The matching element or <code>null</code> if there is none.
       * @since DOM Level 2
       */
      public Element getElementById(String elementId);
  
      /**
       * An attribute specifying the encoding used for this document at the time
       * of the parsing. This is <code>null</code> when it is not known, such
       * as when the <code>Document</code> was created in memory.
       * @since DOM Level 3
       */
      public String getInputEncoding();
  
      /**
       * An attribute specifying, as part of the <a href='http://www.w3.org/TR/2004/REC-xml-20040204#NT-XMLDecl'>XML declaration</a>, the encoding of this document. This is <code>null</code> when
       * unspecified or when it is not known, such as when the
       * <code>Document</code> was created in memory.
       * @since DOM Level 3
       */
      public String getXmlEncoding();
  
      /**
       * An attribute specifying, as part of the <a href='http://www.w3.org/TR/2004/REC-xml-20040204#NT-XMLDecl'>XML declaration</a>, whether this document is standalone. This is <code>false</code> when
       * unspecified.
       * <p ><b>Note:</b>  No verification is done on the value when setting
       * this attribute. Applications should use
       * <code>Document.normalizeDocument()</code> with the "validate"
       * parameter to verify if the value matches the <a href='http://www.w3.org/TR/2004/REC-xml-20040204#sec-rmd'>validity
       * constraint for standalone document declaration</a> as defined in [<a href='http://www.w3.org/TR/2004/REC-xml-20040204'>XML 1.0</a>].
       * @since DOM Level 3
       */
      public boolean getXmlStandalone();
      /**
       * An attribute specifying, as part of the <a href='http://www.w3.org/TR/2004/REC-xml-20040204#NT-XMLDecl'>XML declaration</a>, whether this document is standalone. This is <code>false</code> when
       * unspecified.
       * <p ><b>Note:</b>  No verification is done on the value when setting
       * this attribute. Applications should use
       * <code>Document.normalizeDocument()</code> with the "validate"
       * parameter to verify if the value matches the <a href='http://www.w3.org/TR/2004/REC-xml-20040204#sec-rmd'>validity
       * constraint for standalone document declaration</a> as defined in [<a href='http://www.w3.org/TR/2004/REC-xml-20040204'>XML 1.0</a>].
       * @exception org.w3c.dom.DOMException
       *    NOT_SUPPORTED_ERR: Raised if this document does not support the
       *   "XML" feature.
       * @since DOM Level 3
       */
      public void setXmlStandalone(boolean xmlStandalone)
                                    throws org.w3c.dom.DOMException;
  
      /**
       *  An attribute specifying, as part of the <a href='http://www.w3.org/TR/2004/REC-xml-20040204#NT-XMLDecl'>XML declaration</a>, the version number of this document. If there is no declaration and if
       * this document supports the "XML" feature, the value is
       * <code>"1.0"</code>. If this document does not support the "XML"
       * feature, the value is always <code>null</code>. Changing this
       * attribute will affect methods that check for invalid characters in
       * XML names. Application should invoke
       * <code>Document.normalizeDocument()</code> in order to check for
       * invalid characters in the <code>Node</code>s that are already part of
       * this <code>Document</code>.
       * <br> DOM applications may use the
       * <code>DOMImplementation.hasFeature(feature, version)</code> method
       * with parameter values "XMLVersion" and "1.0" (respectively) to
       * determine if an implementation supports [<a href='http://www.w3.org/TR/2004/REC-xml-20040204'>XML 1.0</a>]. DOM
       * applications may use the same method with parameter values
       * "XMLVersion" and "1.1" (respectively) to determine if an
       * implementation supports [<a href='http://www.w3.org/TR/2004/REC-xml11-20040204/'>XML 1.1</a>]. In both
       * cases, in order to support XML, an implementation must also support
       * the "XML" feature defined in this specification. <code>Document</code>
       *  objects supporting a version of the "XMLVersion" feature must not
       * raise a <code>NOT_SUPPORTED_ERR</code> exception for the same version
       * number when using <code>Document.xmlVersion</code>.
       * @since DOM Level 3
       */
      public String getXmlVersion();
      /**
       *  An attribute specifying, as part of the <a href='http://www.w3.org/TR/2004/REC-xml-20040204#NT-XMLDecl'>XML declaration</a>, the version number of this document. If there is no declaration and if
       * this document supports the "XML" feature, the value is
       * <code>"1.0"</code>. If this document does not support the "XML"
       * feature, the value is always <code>null</code>. Changing this
       * attribute will affect methods that check for invalid characters in
       * XML names. Application should invoke
       * <code>Document.normalizeDocument()</code> in order to check for
       * invalid characters in the <code>Node</code>s that are already part of
       * this <code>Document</code>.
       * <br> DOM applications may use the
       * <code>DOMImplementation.hasFeature(feature, version)</code> method
       * with parameter values "XMLVersion" and "1.0" (respectively) to
       * determine if an implementation supports [<a href='http://www.w3.org/TR/2004/REC-xml-20040204'>XML 1.0</a>]. DOM
       * applications may use the same method with parameter values
       * "XMLVersion" and "1.1" (respectively) to determine if an
       * implementation supports [<a href='http://www.w3.org/TR/2004/REC-xml11-20040204/'>XML 1.1</a>]. In both
       * cases, in order to support XML, an implementation must also support
       * the "XML" feature defined in this specification. <code>Document</code>
       *  objects supporting a version of the "XMLVersion" feature must not
       * raise a <code>NOT_SUPPORTED_ERR</code> exception for the same version
       * number when using <code>Document.xmlVersion</code>.
       * @exception org.w3c.dom.DOMException
       *    NOT_SUPPORTED_ERR: Raised if the version is set to a value that is
       *   not supported by this <code>Document</code> or if this document
       *   does not support the "XML" feature.
       * @since DOM Level 3
       */
      public void setXmlVersion(String xmlVersion)
                                    throws org.w3c.dom.DOMException;
  
      /**
       * An attribute specifying whether error checking is enforced or not. When
       * set to <code>false</code>, the implementation is free to not test
       * every possible error case normally defined on DOM operations, and not
       * raise any <code>DOMException</code> on DOM operations or report
       * errors while using <code>Document.normalizeDocument()</code>. In case
       * of error, the behavior is undefined. This attribute is
       * <code>true</code> by default.
       * @since DOM Level 3
       */
      public boolean getStrictErrorChecking();
      /**
       * An attribute specifying whether error checking is enforced or not. When
       * set to <code>false</code>, the implementation is free to not test
       * every possible error case normally defined on DOM operations, and not
       * raise any <code>DOMException</code> on DOM operations or report
       * errors while using <code>Document.normalizeDocument()</code>. In case
       * of error, the behavior is undefined. This attribute is
       * <code>true</code> by default.
       * @since DOM Level 3
       */
      public void setStrictErrorChecking(boolean strictErrorChecking);
  
      /**
       *  The location of the document or <code>null</code> if undefined or if
       * the <code>Document</code> was created using
       * <code>DOMImplementation.createDocument</code>. No lexical checking is
       * performed when setting this attribute; this could result in a
       * <code>null</code> value returned when using <code>Node.baseURI</code>
       * .
       * <br> Beware that when the <code>Document</code> supports the feature
       * "HTML" [<a href='http://www.w3.org/TR/2003/REC-DOM-Level-2-HTML-20030109'>DOM Level 2 HTML</a>]
       * , the href attribute of the HTML BASE element takes precedence over
       * this attribute when computing <code>Node.baseURI</code>.
       * @since DOM Level 3
       */
      public String getDocumentURI();
      /**
       *  The location of the document or <code>null</code> if undefined or if
       * the <code>Document</code> was created using
       * <code>DOMImplementation.createDocument</code>. No lexical checking is
       * performed when setting this attribute; this could result in a
       * <code>null</code> value returned when using <code>Node.baseURI</code>
       * .
       * <br> Beware that when the <code>Document</code> supports the feature
       * "HTML" [<a href='http://www.w3.org/TR/2003/REC-DOM-Level-2-HTML-20030109'>DOM Level 2 HTML</a>]
       * , the href attribute of the HTML BASE element takes precedence over
       * this attribute when computing <code>Node.baseURI</code>.
       * @since DOM Level 3
       */
      public void setDocumentURI(String documentURI);
  
      /**
       *  Attempts to adopt a node from another document to this document. If
       * supported, it changes the <code>ownerDocument</code> of the source
       * node, its children, as well as the attached attribute nodes if there
       * are any. If the source node has a parent it is first removed from the
       * child list of its parent. This effectively allows moving a subtree
       * from one document to another (unlike <code>importNode()</code> which
       * create a copy of the source node instead of moving it). When it
       * fails, applications should use <code>Document.importNode()</code>
       * instead. Note that if the adopted node is already part of this
       * document (i.e. the source and target document are the same), this
       * method still has the effect of removing the source node from the
       * child list of its parent, if any. The following list describes the
       * specifics for each type of node.
       * <dl>
       * <dt>ATTRIBUTE_NODE</dt>
       * <dd>The
       * <code>ownerElement</code> attribute is set to <code>null</code> and
       * the <code>specified</code> flag is set to <code>true</code> on the
       * adopted <code>Attr</code>. The descendants of the source
       * <code>Attr</code> are recursively adopted.</dd>
       * <dt>DOCUMENT_FRAGMENT_NODE</dt>
       * <dd>The
       * descendants of the source node are recursively adopted.</dd>
       * <dt>DOCUMENT_NODE</dt>
       * <dd>
       * <code>Document</code> nodes cannot be adopted.</dd>
       * <dt>DOCUMENT_TYPE_NODE</dt>
       * <dd>
       * <code>DocumentType</code> nodes cannot be adopted.</dd>
       * <dt>ELEMENT_NODE</dt>
       * <dd><em>Specified</em> attribute nodes of the source element are adopted. Default attributes
       * are discarded, though if the document being adopted into defines
       * default attributes for this element name, those are assigned. The
       * descendants of the source element are recursively adopted.</dd>
       * <dt>ENTITY_NODE</dt>
       * <dd>
       * <code>Entity</code> nodes cannot be adopted.</dd>
       * <dt>ENTITY_REFERENCE_NODE</dt>
       * <dd>Only
       * the <code>EntityReference</code> node itself is adopted, the
       * descendants are discarded, since the source and destination documents
       * might have defined the entity differently. If the document being
       * imported into provides a definition for this entity name, its value
       * is assigned.</dd>
       * <dt>NOTATION_NODE</dt>
       * <dd><code>Notation</code> nodes cannot be
       * adopted.</dd>
       * <dt>PROCESSING_INSTRUCTION_NODE, TEXT_NODE, CDATA_SECTION_NODE,
       * COMMENT_NODE</dt>
       * <dd>These nodes can all be adopted. No specifics.</dd>
       * </dl>
       * <p ><b>Note:</b>  Since it does not create new nodes unlike the
       * <code>Document.importNode()</code> method, this method does not raise
       * an <code>INVALID_CHARACTER_ERR</code> exception, and applications
       * should use the <code>Document.normalizeDocument()</code> method to
       * check if an imported name is not an XML name according to the XML
       * version in use.
       * @param source The node to move into this document.
       * @return The adopted node, or <code>null</code> if this operation
       *   fails, such as when the source node comes from a different
       *   implementation.
       * @exception org.w3c.dom.DOMException
       *   NOT_SUPPORTED_ERR: Raised if the source node is of type
       *   <code>DOCUMENT</code>, <code>DOCUMENT_TYPE</code>.
       *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised when the source node is
       *   readonly.
       * @since DOM Level 3
       */
      public org.w3c.dom.Node adoptNode(org.w3c.dom.Node source)
                            throws org.w3c.dom.DOMException;
  
      /**
       *  The configuration used when <code>Document.normalizeDocument()</code>
       * is invoked.
       * @since DOM Level 3
       */
      public DOMConfiguration getDomConfig();
  
      /**
       *  This method acts as if the document was going through a save and load
       * cycle, putting the document in a "normal" form. As a consequence,
       * this method updates the replacement tree of
       * <code>EntityReference</code> nodes and normalizes <code>Text</code>
       * nodes, as defined in the method <code>Node.normalize()</code>.
       * <br> Otherwise, the actual result depends on the features being set on
       * the <code>Document.domConfig</code> object and governing what
       * operations actually take place. Noticeably this method could also
       * make the document namespace well-formed according to the algorithm
       * described in , check the character normalization, remove the
       * <code>CDATASection</code> nodes, etc. See
       * <code>DOMConfiguration</code> for details.
       * <pre>// Keep in the document
       * the information defined // in the XML Information Set (Java example)
       * DOMConfiguration docConfig = myDocument.getDomConfig();
       * docConfig.setParameter("infoset", Boolean.TRUE);
       * myDocument.normalizeDocument();</pre>
       *
       * <br>Mutation events, when supported, are generated to reflect the
       * changes occurring on the document.
       * <br> If errors occur during the invocation of this method, such as an
       * attempt to update a read-only node or a <code>Node.nodeName</code>
       * contains an invalid character according to the XML version in use,
       * errors or warnings (<code>DOMError.SEVERITY_ERROR</code> or
       * <code>DOMError.SEVERITY_WARNING</code>) will be reported using the
       * <code>DOMErrorHandler</code> object associated with the "error-handler
       * " parameter. Note this method might also report fatal errors (
       * <code>DOMError.SEVERITY_FATAL_ERROR</code>) if an implementation
       * cannot recover from an error.
       * @since DOM Level 3
       */
      public void normalizeDocument();
  
      /**
       * Rename an existing node of type <code>ELEMENT_NODE</code> or
       * <code>ATTRIBUTE_NODE</code>.
       * <br>When possible this simply changes the name of the given node,
       * otherwise this creates a new node with the specified name and
       * replaces the existing node with the new node as described below.
       * <br>If simply changing the name of the given node is not possible, the
       * following operations are performed: a new node is created, any
       * registered event listener is registered on the new node, any user
       * data attached to the old node is removed from that node, the old node
       * is removed from its parent if it has one, the children are moved to
       * the new node, if the renamed node is an <code>Element</code> its
       * attributes are moved to the new node, the new node is inserted at the
       * position the old node used to have in its parent's child nodes list
       * if it has one, the user data that was attached to the old node is
       * attached to the new node.
       * <br>When the node being renamed is an <code>Element</code> only the
       * specified attributes are moved, default attributes originated from
       * the DTD are updated according to the new element name. In addition,
       * the implementation may update default attributes from other schemas.
       * Applications should use <code>Document.normalizeDocument()</code> to
       * guarantee these attributes are up-to-date.
       * <br>When the node being renamed is an <code>Attr</code> that is
       * attached to an <code>Element</code>, the node is first removed from
       * the <code>Element</code> attributes map. Then, once renamed, either
       * by modifying the existing node or creating a new one as described
       * above, it is put back.
       * <br>In addition,
       * <ul>
       * <li> a user data event <code>NODE_RENAMED</code> is fired,
       * </li>
       * <li>
       * when the implementation supports the feature "MutationNameEvents",
       * each mutation operation involved in this method fires the appropriate
       * event, and in the end the event {
       * <code>http://www.w3.org/2001/xml-events</code>,
       * <code>DOMElementNameChanged</code>} or {
       * <code>http://www.w3.org/2001/xml-events</code>,
       * <code>DOMAttributeNameChanged</code>} is fired.
       * </li>
       * </ul>
       * @param n The node to rename.
       * @param namespaceURI The new namespace URI.
       * @param qualifiedName The new qualified name.
       * @return The renamed node. This is either the specified node or the new
       *   node that was created to replace the specified node.
       * @exception org.w3c.dom.DOMException
       *   NOT_SUPPORTED_ERR: Raised when the type of the specified node is
       *   neither <code>ELEMENT_NODE</code> nor <code>ATTRIBUTE_NODE</code>,
       *   or if the implementation does not support the renaming of the
       *   document element.
       *   <br>INVALID_CHARACTER_ERR: Raised if the new qualified name is not an
       *   XML name according to the XML version in use specified in the
       *   <code>Document.xmlVersion</code> attribute.
       *   <br>WRONG_DOCUMENT_ERR: Raised when the specified node was created
       *   from a different document than this document.
       *   <br>NAMESPACE_ERR: Raised if the <code>qualifiedName</code> is a
       *   malformed qualified name, if the <code>qualifiedName</code> has a
       *   prefix and the <code>namespaceURI</code> is <code>null</code>, or
       *   if the <code>qualifiedName</code> has a prefix that is "xml" and
       *   the <code>namespaceURI</code> is different from "<a href='http://www.w3.org/XML/1998/namespace'>
       *   http://www.w3.org/XML/1998/namespace</a>" [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]
       *   . Also raised, when the node being renamed is an attribute, if the
       *   <code>qualifiedName</code>, or its prefix, is "xmlns" and the
       *   <code>namespaceURI</code> is different from "<a href='http://www.w3.org/2000/xmlns/'>http://www.w3.org/2000/xmlns/</a>".
       * @since DOM Level 3
       */
      public org.w3c.dom.Node renameNode(Node n,
                                         String namespaceURI,
                                         String qualifiedName)
                             throws DOMException;
  
  }
  