http://xml.apache.org/commons/components/external/: xml-commons provides an Apache-hosted set of DOM, SAX, and JAXP interfaces for use in other xml-based projects. Our hope is that we can standardize on both a common version and packaging scheme for these critical XML standards interfaces to make the lives of both our developers and users easier. The External Components portion of xml-commons contains interfaces that are defined by external standards organizations. For DOM, that's the W3C; for SAX it's David Megginson and sax.sourceforge.net; for JAXP it's Sun. 
/*
 * Copyright (c) 2000 World Wide Web Consortium,
 * (Massachusetts Institute of Technology, Institut National de
 * Recherche en Informatique et en Automatique, Keio University). All
 * Rights Reserved. This program is distributed under the W3C's Software
 * Intellectual Property License. This program 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 W3C License http://www.w3.org/Consortium/Legal/ for more details.
 */

package org.w3c.dom.css;

import org.w3c.dom.DOMException;
import org.w3c.dom.stylesheets.MediaList;


 The CSSMediaRule interface represents a @media rule in a CSS 
style sheet. A @media rule can be used to delimit style 
rules for specific media types. 

See also the Document Object Model (DOM) Level 2 Style Specification.

Since:DOM Level 2
/**
 *  The <code>CSSMediaRule</code> interface represents a @media rule in a CSS 
 * style sheet. A <code>@media</code> rule can be used to delimit style 
 * rules for specific media types. 
 * <p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Style-20001113'>Document Object Model (DOM) Level 2 Style Specification</a>.
 * @since DOM Level 2
 */
public interface CSSMediaRule extends CSSRule {
    
 A list of media types for this rule. 

/**
     *  A list of media types for this rule. 
     */
    public MediaList getMedia();

    
 A list of all CSS rules contained within the media block. 

/**
     *  A list of all CSS rules contained within the media block. 
     */
    public CSSRuleList getCssRules();

    
 Used to insert a new rule into the media block. 

Params:
  • rule –  The parsable text representing the rule. For rule sets 
  this contains both the selector and the style declaration. For 
  at-rules, this specifies both the at-identifier and the rule 
  content.
  • index –  The index within the media block's rule collection of 
  the rule before which to insert the specified rule. If the 
  specified index is equal to the length of the media blocks's rule 
  collection, the rule will be added to the end of the media block.
Throws:
  • DOMException – 
  HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at the 
  specified index, e.g., if an @import rule is inserted 
  after a standard rule set or other at-rule.
  
    INDEX_SIZE_ERR: Raised if the specified index is not a valid 
  insertion point.
  
    NO_MODIFICATION_ALLOWED_ERR: Raised if this media rule is 
  readonly.
  
    SYNTAX_ERR: Raised if the specified rule has a syntax error and 
  is unparsable.
Returns: The index within the media block's rule collection of the 
  newly inserted rule.
/**
     *  Used to insert a new rule into the media block. 
     * @param rule  The parsable text representing the rule. For rule sets 
     *   this contains both the selector and the style declaration. For 
     *   at-rules, this specifies both the at-identifier and the rule 
     *   content. 
     * @param index  The index within the media block's rule collection of 
     *   the rule before which to insert the specified rule. If the 
     *   specified index is equal to the length of the media blocks's rule 
     *   collection, the rule will be added to the end of the media block. 
     * @return  The index within the media block's rule collection of the 
     *   newly inserted rule. 
     * @exception DOMException
     *   HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at the 
     *   specified index, e.g., if an <code>@import</code> rule is inserted 
     *   after a standard rule set or other at-rule.
     *   <br>INDEX_SIZE_ERR: Raised if the specified index is not a valid 
     *   insertion point.
     *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this media rule is 
     *   readonly.
     *   <br>SYNTAX_ERR: Raised if the specified rule has a syntax error and 
     *   is unparsable.
     */
    public int insertRule(String rule, 
                          int index)
                          throws DOMException;

    
 Used to delete a rule from the media block. 

Params:
  • index –  The index within the media block's rule collection of 
  the rule to remove.
Throws:
  • DOMException – 
  INDEX_SIZE_ERR: Raised if the specified index does not correspond to 
  a rule in the media rule list.
  
    NO_MODIFICATION_ALLOWED_ERR: Raised if this media rule is 
  readonly.
/**
     *  Used to delete a rule from the media block. 
     * @param index  The index within the media block's rule collection of 
     *   the rule to remove. 
     * @exception DOMException
     *   INDEX_SIZE_ERR: Raised if the specified index does not correspond to 
     *   a rule in the media rule list.
     *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this media rule is 
     *   readonly.
     */
    public void deleteRule(int index)
                           throws DOMException;

}