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.StyleSheet;


 The CSSStyleSheet interface is a concrete interface used to 
represent a CSS style sheet i.e., a style sheet whose content type is 
"text/css". 

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

Since:DOM Level 2
/**
 *  The <code>CSSStyleSheet</code> interface is a concrete interface used to 
 * represent a CSS style sheet i.e., a style sheet whose content type is 
 * "text/css". 
 * <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 CSSStyleSheet extends StyleSheet {
    
 If this style sheet comes from an @import rule, the 
ownerRule attribute will contain the 
CSSImportRule. In that case, the ownerNode 
attribute in the StyleSheet interface will be 
null. If the style sheet comes from an element or a 
processing instruction, the ownerRule attribute will be 
null and the ownerNode attribute will 
contain the Node. 

/**
     *  If this style sheet comes from an <code>@import</code> rule, the 
     * <code>ownerRule</code> attribute will contain the 
     * <code>CSSImportRule</code>. In that case, the <code>ownerNode</code> 
     * attribute in the <code>StyleSheet</code> interface will be 
     * <code>null</code>. If the style sheet comes from an element or a 
     * processing instruction, the <code>ownerRule</code> attribute will be 
     * <code>null</code> and the <code>ownerNode</code> attribute will 
     * contain the <code>Node</code>. 
     */
    public CSSRule getOwnerRule();

    
 The list of all CSS rules contained within the style sheet. This 
includes both rule sets and at-rules. 

/**
     *  The list of all CSS rules contained within the style sheet. This 
     * includes both rule sets and at-rules. 
     */
    public CSSRuleList getCssRules();

    
 Used to insert a new rule into the style sheet. The new rule now 
becomes part of the cascade. 

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 style sheet's rule list of the rule 
  before which to insert the specified rule. If the specified index 
  is equal to the length of the style sheet's rule collection, the 
  rule will be added to the end of the style sheet.
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 style sheet is 
  readonly.
  
    SYNTAX_ERR: Raised if the specified rule has a syntax error and 
  is unparsable.
Returns: The index within the style sheet's rule collection of the 
  newly inserted rule.
/**
     *  Used to insert a new rule into the style sheet. The new rule now 
     * becomes part of the cascade. 
     * @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 style sheet's rule list of the rule 
     *   before which to insert the specified rule. If the specified index 
     *   is equal to the length of the style sheet's rule collection, the 
     *   rule will be added to the end of the style sheet. 
     * @return  The index within the style sheet'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 style sheet 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 style sheet. 

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

}