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jeremybenn |
/*
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* Copyright (c) 2004 World Wide Web Consortium,
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*
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* (Massachusetts Institute of Technology, European Research Consortium for
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* Informatics and Mathematics, Keio University). All Rights Reserved. This
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* work is distributed under the W3C(r) Software License [1] in the hope that
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* it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
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*/
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package org.w3c.dom;
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/**
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* The <code>Element</code> interface represents an element in an HTML or XML
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* document. Elements may have attributes associated with them; since the
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* <code>Element</code> interface inherits from <code>Node</code>, the
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* generic <code>Node</code> interface attribute <code>attributes</code> may
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* be used to retrieve the set of all attributes for an element. There are
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* methods on the <code>Element</code> interface to retrieve either an
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* <code>Attr</code> object by name or an attribute value by name. In XML,
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* where an attribute value may contain entity references, an
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* <code>Attr</code> object should be retrieved to examine the possibly
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* fairly complex sub-tree representing the attribute value. On the other
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* hand, in HTML, where all attributes have simple string values, methods to
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* directly access an attribute value can safely be used as a convenience.
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* <p ><b>Note:</b> In DOM Level 2, the method <code>normalize</code> is
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* inherited from the <code>Node</code> interface where it was moved.
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* <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>.
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*/
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public interface Element extends Node {
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/**
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* The name of the element. If <code>Node.localName</code> is different
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* from <code>null</code>, this attribute is a qualified name. For
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* example, in:
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* <pre> <elementExample id="demo"> ...
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* </elementExample> , </pre>
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* <code>tagName</code> has the value
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* <code>"elementExample"</code>. Note that this is case-preserving in
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* XML, as are all of the operations of the DOM. The HTML DOM returns
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* the <code>tagName</code> of an HTML element in the canonical
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* uppercase form, regardless of the case in the source HTML document.
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*/
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public String getTagName();
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/**
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* Retrieves an attribute value by name.
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* @param name The name of the attribute to retrieve.
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* @return The <code>Attr</code> value as a string, or the empty string
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* if that attribute does not have a specified or default value.
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*/
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public String getAttribute(String name);
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/**
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* Adds a new attribute. If an attribute with that name is already present
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* in the element, its value is changed to be that of the value
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* parameter. This value is a simple string; it is not parsed as it is
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* being set. So any markup (such as syntax to be recognized as an
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* entity reference) is treated as literal text, and needs to be
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* appropriately escaped by the implementation when it is written out.
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* In order to assign an attribute value that contains entity
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* references, the user must create an <code>Attr</code> node plus any
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* <code>Text</code> and <code>EntityReference</code> nodes, build the
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* appropriate subtree, and use <code>setAttributeNode</code> to assign
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* it as the value of an attribute.
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* <br>To set an attribute with a qualified name and namespace URI, use
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* the <code>setAttributeNS</code> method.
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* @param name The name of the attribute to create or alter.
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* @param value Value to set in string form.
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* @exception DOMException
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* INVALID_CHARACTER_ERR: Raised if the specified name is not an XML
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* name according to the XML version in use specified in the
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* <code>Document.xmlVersion</code> attribute.
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* <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
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*/
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public void setAttribute(String name,
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String value)
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throws DOMException;
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/**
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* Removes an attribute by name. If a default value for the removed
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* attribute is defined in the DTD, a new attribute immediately appears
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* with the default value as well as the corresponding namespace URI,
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* local name, and prefix when applicable. The implementation may handle
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* default values from other schemas similarly but applications should
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* use <code>Document.normalizeDocument()</code> to guarantee this
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* information is up-to-date.
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* <br>If no attribute with this name is found, this method has no effect.
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* <br>To remove an attribute by local name and namespace URI, use the
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* <code>removeAttributeNS</code> method.
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* @param name The name of the attribute to remove.
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* @exception DOMException
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* NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
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*/
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public void removeAttribute(String name)
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throws DOMException;
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/**
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* Retrieves an attribute node by name.
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* <br>To retrieve an attribute node by qualified name and namespace URI,
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* use the <code>getAttributeNodeNS</code> method.
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* @param name The name (<code>nodeName</code>) of the attribute to
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* retrieve.
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* @return The <code>Attr</code> node with the specified name (
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* <code>nodeName</code>) or <code>null</code> if there is no such
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* attribute.
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*/
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public Attr getAttributeNode(String name);
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/**
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* Adds a new attribute node. If an attribute with that name (
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* <code>nodeName</code>) is already present in the element, it is
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* replaced by the new one. Replacing an attribute node by itself has no
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* effect.
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* <br>To add a new attribute node with a qualified name and namespace
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* URI, use the <code>setAttributeNodeNS</code> method.
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* @param newAttr The <code>Attr</code> node to add to the attribute list.
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* @return If the <code>newAttr</code> attribute replaces an existing
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* attribute, the replaced <code>Attr</code> node is returned,
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* otherwise <code>null</code> is returned.
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* @exception DOMException
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* WRONG_DOCUMENT_ERR: Raised if <code>newAttr</code> was created from a
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* different document than the one that created the element.
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* <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
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* <br>INUSE_ATTRIBUTE_ERR: Raised if <code>newAttr</code> is already an
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* attribute of another <code>Element</code> object. The DOM user must
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* explicitly clone <code>Attr</code> nodes to re-use them in other
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* elements.
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*/
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public Attr setAttributeNode(Attr newAttr)
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throws DOMException;
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/**
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* Removes the specified attribute node. If a default value for the
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* removed <code>Attr</code> node is defined in the DTD, a new node
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* immediately appears with the default value as well as the
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* corresponding namespace URI, local name, and prefix when applicable.
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* The implementation may handle default values from other schemas
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* similarly but applications should use
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* <code>Document.normalizeDocument()</code> to guarantee this
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* information is up-to-date.
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* @param oldAttr The <code>Attr</code> node to remove from the attribute
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* list.
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* @return The <code>Attr</code> node that was removed.
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* @exception DOMException
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* NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
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* <br>NOT_FOUND_ERR: Raised if <code>oldAttr</code> is not an attribute
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* of the element.
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*/
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public Attr removeAttributeNode(Attr oldAttr)
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throws DOMException;
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/**
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* Returns a <code>NodeList</code> of all descendant <code>Elements</code>
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* with a given tag name, in document order.
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* @param name The name of the tag to match on. The special value "*"
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* matches all tags.
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* @return A list of matching <code>Element</code> nodes.
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*/
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public NodeList getElementsByTagName(String name);
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/**
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* Retrieves an attribute value by local name and namespace URI.
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* <br>Per [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]
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* , applications must use the value <code>null</code> as the
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* <code>namespaceURI</code> parameter for methods if they wish to have
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* no namespace.
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* @param namespaceURI The namespace URI of the attribute to retrieve.
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* @param localName The local name of the attribute to retrieve.
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* @return The <code>Attr</code> value as a string, or the empty string
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* if that attribute does not have a specified or default value.
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* @exception DOMException
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* NOT_SUPPORTED_ERR: May be raised if the implementation does not
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* support the feature <code>"XML"</code> and the language exposed
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* 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>]).
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* @since DOM Level 2
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*/
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public String getAttributeNS(String namespaceURI,
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String localName)
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throws DOMException;
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/**
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* Adds a new attribute. If an attribute with the same local name and
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* namespace URI is already present on the element, its prefix is
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* changed to be the prefix part of the <code>qualifiedName</code>, and
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* its value is changed to be the <code>value</code> parameter. This
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* value is a simple string; it is not parsed as it is being set. So any
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* markup (such as syntax to be recognized as an entity reference) is
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* treated as literal text, and needs to be appropriately escaped by the
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* implementation when it is written out. In order to assign an
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* attribute value that contains entity references, the user must create
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* an <code>Attr</code> node plus any <code>Text</code> and
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* <code>EntityReference</code> nodes, build the appropriate subtree,
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* and use <code>setAttributeNodeNS</code> or
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* <code>setAttributeNode</code> to assign it as the value of an
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* attribute.
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* <br>Per [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]
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* , applications must use the value <code>null</code> as the
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* <code>namespaceURI</code> parameter for methods if they wish to have
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* no namespace.
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* @param namespaceURI The namespace URI of the attribute to create or
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* alter.
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* @param qualifiedName The qualified name of the attribute to create or
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* alter.
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* @param value The value to set in string form.
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* @exception DOMException
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* INVALID_CHARACTER_ERR: Raised if the specified qualified name is not
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* an XML name according to the XML version in use specified in the
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* <code>Document.xmlVersion</code> attribute.
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* <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
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* <br>NAMESPACE_ERR: Raised if the <code>qualifiedName</code> is
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* malformed per the Namespaces in XML specification, if the
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* <code>qualifiedName</code> has a prefix and the
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* <code>namespaceURI</code> is <code>null</code>, if the
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* <code>qualifiedName</code> has a prefix that is "xml" and the
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* <code>namespaceURI</code> is different from "<a href='http://www.w3.org/XML/1998/namespace'>
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* http://www.w3.org/XML/1998/namespace</a>", if the <code>qualifiedName</code> or its prefix is "xmlns" and the
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* <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".
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* <br>NOT_SUPPORTED_ERR: May be raised if the implementation does not
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* support the feature <code>"XML"</code> and the language exposed
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* 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>]).
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* @since DOM Level 2
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*/
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public void setAttributeNS(String namespaceURI,
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String qualifiedName,
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String value)
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throws DOMException;
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/**
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* Removes an attribute by local name and namespace URI. If a default
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* value for the removed attribute is defined in the DTD, a new
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* attribute immediately appears with the default value as well as the
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* corresponding namespace URI, local name, and prefix when applicable.
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* The implementation may handle default values from other schemas
|
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* similarly but applications should use
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* <code>Document.normalizeDocument()</code> to guarantee this
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* information is up-to-date.
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* <br>If no attribute with this local name and namespace URI is found,
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* this method has no effect.
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* <br>Per [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]
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* , applications must use the value <code>null</code> as the
|
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* <code>namespaceURI</code> parameter for methods if they wish to have
|
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* no namespace.
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* @param namespaceURI The namespace URI of the attribute to remove.
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* @param localName The local name of the attribute to remove.
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* @exception DOMException
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* NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
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* <br>NOT_SUPPORTED_ERR: May be raised if the implementation does not
|
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* support the feature <code>"XML"</code> and the language exposed
|
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|
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* 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>]).
|
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|
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* @since DOM Level 2
|
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*/
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public void removeAttributeNS(String namespaceURI,
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|
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String localName)
|
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throws DOMException;
|
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|
|
|
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|
|
/**
|
259 |
|
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* Retrieves an <code>Attr</code> node by local name and namespace URI.
|
260 |
|
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* <br>Per [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]
|
261 |
|
|
* , applications must use the value <code>null</code> as the
|
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|
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* <code>namespaceURI</code> parameter for methods if they wish to have
|
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|
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* no namespace.
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* @param namespaceURI The namespace URI of the attribute to retrieve.
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* @param localName The local name of the attribute to retrieve.
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* @return The <code>Attr</code> node with the specified attribute local
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* name and namespace URI or <code>null</code> if there is no such
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* attribute.
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* @exception DOMException
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* NOT_SUPPORTED_ERR: May be raised if the implementation does not
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* support the feature <code>"XML"</code> and the language exposed
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* 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>]).
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* @since DOM Level 2
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*/
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public Attr getAttributeNodeNS(String namespaceURI,
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String localName)
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throws DOMException;
|
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/**
|
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* Adds a new attribute. If an attribute with that local name and that
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|
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* namespace URI is already present in the element, it is replaced by
|
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|
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* the new one. Replacing an attribute node by itself has no effect.
|
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|
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* <br>Per [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]
|
284 |
|
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* , applications must use the value <code>null</code> as the
|
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|
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* <code>namespaceURI</code> parameter for methods if they wish to have
|
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* no namespace.
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|
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* @param newAttr The <code>Attr</code> node to add to the attribute list.
|
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|
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* @return If the <code>newAttr</code> attribute replaces an existing
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* attribute with the same local name and namespace URI, the replaced
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* <code>Attr</code> node is returned, otherwise <code>null</code> is
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* returned.
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* @exception DOMException
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|
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* WRONG_DOCUMENT_ERR: Raised if <code>newAttr</code> was created from a
|
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|
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* different document than the one that created the element.
|
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|
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* <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
|
296 |
|
|
* <br>INUSE_ATTRIBUTE_ERR: Raised if <code>newAttr</code> is already an
|
297 |
|
|
* attribute of another <code>Element</code> object. The DOM user must
|
298 |
|
|
* explicitly clone <code>Attr</code> nodes to re-use them in other
|
299 |
|
|
* elements.
|
300 |
|
|
* <br>NOT_SUPPORTED_ERR: May be raised if the implementation does not
|
301 |
|
|
* support the feature <code>"XML"</code> and the language exposed
|
302 |
|
|
* 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>]).
|
303 |
|
|
* @since DOM Level 2
|
304 |
|
|
*/
|
305 |
|
|
public Attr setAttributeNodeNS(Attr newAttr)
|
306 |
|
|
throws DOMException;
|
307 |
|
|
|
308 |
|
|
/**
|
309 |
|
|
* Returns a <code>NodeList</code> of all the descendant
|
310 |
|
|
* <code>Elements</code> with a given local name and namespace URI in
|
311 |
|
|
* document order.
|
312 |
|
|
* @param namespaceURI The namespace URI of the elements to match on. The
|
313 |
|
|
* special value "*" matches all namespaces.
|
314 |
|
|
* @param localName The local name of the elements to match on. The
|
315 |
|
|
* special value "*" matches all local names.
|
316 |
|
|
* @return A new <code>NodeList</code> object containing all the matched
|
317 |
|
|
* <code>Elements</code>.
|
318 |
|
|
* @exception DOMException
|
319 |
|
|
* NOT_SUPPORTED_ERR: May be raised if the implementation does not
|
320 |
|
|
* support the feature <code>"XML"</code> and the language exposed
|
321 |
|
|
* 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>]).
|
322 |
|
|
* @since DOM Level 2
|
323 |
|
|
*/
|
324 |
|
|
public NodeList getElementsByTagNameNS(String namespaceURI,
|
325 |
|
|
String localName)
|
326 |
|
|
throws DOMException;
|
327 |
|
|
|
328 |
|
|
/**
|
329 |
|
|
* Returns <code>true</code> when an attribute with a given name is
|
330 |
|
|
* specified on this element or has a default value, <code>false</code>
|
331 |
|
|
* otherwise.
|
332 |
|
|
* @param name The name of the attribute to look for.
|
333 |
|
|
* @return <code>true</code> if an attribute with the given name is
|
334 |
|
|
* specified on this element or has a default value, <code>false</code>
|
335 |
|
|
* otherwise.
|
336 |
|
|
* @since DOM Level 2
|
337 |
|
|
*/
|
338 |
|
|
public boolean hasAttribute(String name);
|
339 |
|
|
|
340 |
|
|
/**
|
341 |
|
|
* Returns <code>true</code> when an attribute with a given local name and
|
342 |
|
|
* namespace URI is specified on this element or has a default value,
|
343 |
|
|
* <code>false</code> otherwise.
|
344 |
|
|
* <br>Per [<a href='http://www.w3.org/TR/1999/REC-xml-names-19990114/'>XML Namespaces</a>]
|
345 |
|
|
* , applications must use the value <code>null</code> as the
|
346 |
|
|
* <code>namespaceURI</code> parameter for methods if they wish to have
|
347 |
|
|
* no namespace.
|
348 |
|
|
* @param namespaceURI The namespace URI of the attribute to look for.
|
349 |
|
|
* @param localName The local name of the attribute to look for.
|
350 |
|
|
* @return <code>true</code> if an attribute with the given local name
|
351 |
|
|
* and namespace URI is specified or has a default value on this
|
352 |
|
|
* element, <code>false</code> otherwise.
|
353 |
|
|
* @exception DOMException
|
354 |
|
|
* NOT_SUPPORTED_ERR: May be raised if the implementation does not
|
355 |
|
|
* support the feature <code>"XML"</code> and the language exposed
|
356 |
|
|
* 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>]).
|
357 |
|
|
* @since DOM Level 2
|
358 |
|
|
*/
|
359 |
|
|
public boolean hasAttributeNS(String namespaceURI,
|
360 |
|
|
String localName)
|
361 |
|
|
throws DOMException;
|
362 |
|
|
|
363 |
|
|
/**
|
364 |
|
|
* The type information associated with this element.
|
365 |
|
|
* @since DOM Level 3
|
366 |
|
|
*/
|
367 |
|
|
public TypeInfo getSchemaTypeInfo();
|
368 |
|
|
|
369 |
|
|
/**
|
370 |
|
|
* If the parameter <code>isId</code> is <code>true</code>, this method
|
371 |
|
|
* declares the specified attribute to be a user-determined ID attribute
|
372 |
|
|
* . This affects the value of <code>Attr.isId</code> and the behavior
|
373 |
|
|
* of <code>Document.getElementById</code>, but does not change any
|
374 |
|
|
* schema that may be in use, in particular this does not affect the
|
375 |
|
|
* <code>Attr.schemaTypeInfo</code> of the specified <code>Attr</code>
|
376 |
|
|
* node. Use the value <code>false</code> for the parameter
|
377 |
|
|
* <code>isId</code> to undeclare an attribute for being a
|
378 |
|
|
* user-determined ID attribute.
|
379 |
|
|
* <br> To specify an attribute by local name and namespace URI, use the
|
380 |
|
|
* <code>setIdAttributeNS</code> method.
|
381 |
|
|
* @param name The name of the attribute.
|
382 |
|
|
* @param isId Whether the attribute is a of type ID.
|
383 |
|
|
* @exception DOMException
|
384 |
|
|
* NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
|
385 |
|
|
* <br>NOT_FOUND_ERR: Raised if the specified node is not an attribute
|
386 |
|
|
* of this element.
|
387 |
|
|
* @since DOM Level 3
|
388 |
|
|
*/
|
389 |
|
|
public void setIdAttribute(String name,
|
390 |
|
|
boolean isId)
|
391 |
|
|
throws DOMException;
|
392 |
|
|
|
393 |
|
|
/**
|
394 |
|
|
* If the parameter <code>isId</code> is <code>true</code>, this method
|
395 |
|
|
* declares the specified attribute to be a user-determined ID attribute
|
396 |
|
|
* . This affects the value of <code>Attr.isId</code> and the behavior
|
397 |
|
|
* of <code>Document.getElementById</code>, but does not change any
|
398 |
|
|
* schema that may be in use, in particular this does not affect the
|
399 |
|
|
* <code>Attr.schemaTypeInfo</code> of the specified <code>Attr</code>
|
400 |
|
|
* node. Use the value <code>false</code> for the parameter
|
401 |
|
|
* <code>isId</code> to undeclare an attribute for being a
|
402 |
|
|
* user-determined ID attribute.
|
403 |
|
|
* @param namespaceURI The namespace URI of the attribute.
|
404 |
|
|
* @param localName The local name of the attribute.
|
405 |
|
|
* @param isId Whether the attribute is a of type ID.
|
406 |
|
|
* @exception DOMException
|
407 |
|
|
* NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
|
408 |
|
|
* <br>NOT_FOUND_ERR: Raised if the specified node is not an attribute
|
409 |
|
|
* of this element.
|
410 |
|
|
* @since DOM Level 3
|
411 |
|
|
*/
|
412 |
|
|
public void setIdAttributeNS(String namespaceURI,
|
413 |
|
|
String localName,
|
414 |
|
|
boolean isId)
|
415 |
|
|
throws DOMException;
|
416 |
|
|
|
417 |
|
|
/**
|
418 |
|
|
* If the parameter <code>isId</code> is <code>true</code>, this method
|
419 |
|
|
* declares the specified attribute to be a user-determined ID attribute
|
420 |
|
|
* . This affects the value of <code>Attr.isId</code> and the behavior
|
421 |
|
|
* of <code>Document.getElementById</code>, but does not change any
|
422 |
|
|
* schema that may be in use, in particular this does not affect the
|
423 |
|
|
* <code>Attr.schemaTypeInfo</code> of the specified <code>Attr</code>
|
424 |
|
|
* node. Use the value <code>false</code> for the parameter
|
425 |
|
|
* <code>isId</code> to undeclare an attribute for being a
|
426 |
|
|
* user-determined ID attribute.
|
427 |
|
|
* @param idAttr The attribute node.
|
428 |
|
|
* @param isId Whether the attribute is a of type ID.
|
429 |
|
|
* @exception DOMException
|
430 |
|
|
* NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
|
431 |
|
|
* <br>NOT_FOUND_ERR: Raised if the specified node is not an attribute
|
432 |
|
|
* of this element.
|
433 |
|
|
* @since DOM Level 3
|
434 |
|
|
*/
|
435 |
|
|
public void setIdAttributeNode(Attr idAttr,
|
436 |
|
|
boolean isId)
|
437 |
|
|
throws DOMException;
|
438 |
|
|
|
439 |
|
|
}
|