element.java

windows 代码

     *  Retrieves an attribute value by local name and namespace URI. 
     * HTML-only DOM implementations do not need to implement this method.
     * @param namespaceURI  The  namespace URI of the attribute to retrieve.
     * @param localName  The  local name of the attribute to retrieve.
     * @return  The <code>Attr</code> value as a string, or an 
     *   <code>null</code> if that attribute does not have a specified or 
     *   default value.  This is different from <code>getAttribute</code> 
     *   which never return <code>null</code> . 
     * @since DOM Level 2
     */
    public String getAttributeNS(String namespaceURI, 
                                 String localName);

    /**
     *  Adds a new attribute. If an attribute with the same local name and 
     * namespace URI is already present on the element, its prefix is changed 
     * to be the prefix part of the <code>qualifiedName</code> , and its 
     * value is changed to be the <code>value</code> parameter. This value is 
     * a simple string; it is not parsed as it is being set. So any markup 
     * (such as syntax to be recognized as an entity reference) is treated as 
     * literal text, and needs to be appropriately escaped by the 
     * implementation when it is written out. In order to assign an attribute 
     * value that contains entity references, the user must create an 
     * <code>Attr</code> node plus any <code>Text</code> and 
     * <code>EntityReference</code> nodes, build the appropriate subtree, and 
     * use <code>setAttributeNodeNS</code> or <code>setAttributeNode</code> to
     *  assign it as the value of an attribute.
     * <br> HTML-only DOM implementations do not need to implement this method.
     * @param namespaceURI  The  namespace URI of the attribute to create or 
     *   alter.
     * @param qualifiedName  The  qualified name of the attribute to create or 
     *   alter.
     * @param value  The value to set in string form.
     * @exception DOMException
     *    INVALID_CHARACTER_ERR: Raised if the specified qualified name 
     *   contains an illegal character.
     *   <br> NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
     *   <br> NAMESPACE_ERR: Raised if the <code>qualifiedName</code> is 
     *   malformed, if the <code>qualifiedName</code> has a prefix and the 
     *   <code>namespaceURI</code> is <code>null</code> or an empty string, 
     *   if the <code>qualifiedName</code> has a prefix that is "xml" and the 
     *   <code>namespaceURI</code> is different from 
     *   "http://www.w3.org/XML/1998/namespace", if the 
     *   <code>qualifiedName</code> has a prefix that is "xmlns" and the 
     *   <code>namespaceURI</code> is different from 
     *   "http://www.w3.org/2000/xmlns/", or if the <code>qualifiedName</code>
     *    is "xmlns" and the <code>namespaceURI</code> is different from 
     *   "http://www.w3.org/2000/xmlns/".
     * @since DOM Level 2
     */
    public void setAttributeNS(String namespaceURI, 
                               String qualifiedName, 
                               String value)
                               throws DOMException;

    /**
     *  Removes an attribute by local name and namespace URI. If the removed 
     * attribute has a default value it is immediately replaced. The 
     * replacing attribute has the same namespace URI and local name, as well 
     * as the original prefix.
     * <br> HTML-only DOM implementations do not need to implement this method.
     * @param namespaceURI  The  namespace URI of the attribute to remove.
     * @param localName  The  local name of the attribute to remove.
     * @exception DOMException
     *    NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
     * @since DOM Level 2
     */
    public void removeAttributeNS(String namespaceURI, 
                                  String localName)
                                  throws DOMException;

    /**
     *  Retrieves an <code>Attr</code> node by local name and namespace URI. 
     * HTML-only DOM implementations do not need to implement this method.
     * @param namespaceURI  The  namespace URI of the attribute to retrieve.
     * @param localName  The  local name of the attribute to retrieve.
     * @return  The <code>Attr</code> node with the specified attribute local 
     *   name and namespace URI or <code>null</code> if there is no such 
     *   attribute.
     * @since DOM Level 2
     */
    public Attr getAttributeNodeNS(String namespaceURI, 
                                   String localName);

    /**
     *  Adds a new attribute. If an attribute with that local name and that 
     * namespace URI is already present in the element, it is replaced by the 
     * new one.
     * <br> HTML-only DOM implementations do not need to implement this method.
     * @param newAttr  The <code>Attr</code> node to add to the attribute list.
     * @return  If the <code>newAttr</code> attribute replaces an existing 
     *   attribute with the same  local name and  namespace URI , the 
     *   replaced <code>Attr</code> node is returned, otherwise 
     *   <code>null</code> is returned.
     * @exception DOMException
     *    WRONG_DOCUMENT_ERR: Raised if <code>newAttr</code> was created from 
     *   a different document than the one that created the element.
     *   <br> NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly.
     *   <br> INUSE_ATTRIBUTE_ERR: Raised if <code>newAttr</code> 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.
     * @since DOM Level 2
     */
    public Attr setAttributeNodeNS(Attr newAttr)
                                   throws DOMException;

    /**
     *  Returns a <code>NodeList</code> of all the <code>Elements</code> with 
     * a given local name and namespace URI in the order in which they would 
     * be encountered in a preorder traversal of the <code>Document</code> 
     * tree, starting from this node.
     * <br> HTML-only DOM implementations do not need to implement this method.
     * @param namespaceURI  The  namespace URI of the elements to match on. 
     *   The special value "*" 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 <code>true</code> when an attribute with a given name is 
     * specified on this element or has a default value, <code>false</code> 
     * otherwise.
     * @param name  The name of the attribute to look for.
     * @return <code>true</code> if an attribute with the given name is 
     *   specified on this element or has a default value, <code>false</code> 
     *   otherwise.
     * @since DOM Level 2
     */
    public boolean hasAttribute(String name);

    /**
     *  Returns <code>true</code> when an attribute with a given local name 
     * and namespace URI is specified on this element or has a default value, 
     * <code>false</code> otherwise. HTML-only DOM implementations do not 
     * need to implement this method.
     * @param namespaceURI  The  namespace URI of the attribute to look for.
     * @param localName  The  local name of the attribute to look for.
     * @return <code>true</code> if an attribute with the given local name and 
     *   namespace URI is specified or has a default value on this element, 
     *   <code>false</code> otherwise.
     * @since DOM Level 2
     */
    public boolean hasAttributeNS(String namespaceURI, 
                                  String localName);

}