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