001    /*
002     * Copyright (c) 2000 World Wide Web Consortium,
003     * (Massachusetts Institute of Technology, Institut National de
004     * Recherche en Informatique et en Automatique, Keio University). All
005     * Rights Reserved. This program is distributed under the W3C's Software
006     * Intellectual Property License. This program is distributed in the
007     * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
008     * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
009     * PURPOSE.
010     * See W3C License http://www.w3.org/Consortium/Legal/ for more details.
011     */
012    
013    package org.w3c.dom.css;
014    
015    import org.w3c.dom.DOMException;
016    import org.w3c.dom.stylesheets.StyleSheet;
017    
018    /**
019     *  The <code>CSSStyleSheet</code> interface is a concrete interface used to 
020     * represent a CSS style sheet i.e., a style sheet whose content type is 
021     * "text/css". 
022     * <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>.
023     * @since DOM Level 2
024     */
025    public interface CSSStyleSheet extends StyleSheet {
026        /**
027         *  If this style sheet comes from an <code>@import</code> rule, the 
028         * <code>ownerRule</code> attribute will contain the 
029         * <code>CSSImportRule</code>. In that case, the <code>ownerNode</code> 
030         * attribute in the <code>StyleSheet</code> interface will be 
031         * <code>null</code>. If the style sheet comes from an element or a 
032         * processing instruction, the <code>ownerRule</code> attribute will be 
033         * <code>null</code> and the <code>ownerNode</code> attribute will 
034         * contain the <code>Node</code>. 
035         */
036        public CSSRule getOwnerRule();
037    
038        /**
039         *  The list of all CSS rules contained within the style sheet. This 
040         * includes both rule sets and at-rules. 
041         */
042        public CSSRuleList getCssRules();
043    
044        /**
045         *  Used to insert a new rule into the style sheet. The new rule now 
046         * becomes part of the cascade. 
047         * @param rule  The parsable text representing the rule. For rule sets 
048         *   this contains both the selector and the style declaration. For 
049         *   at-rules, this specifies both the at-identifier and the rule 
050         *   content. 
051         * @param index  The index within the style sheet's rule list of the rule 
052         *   before which to insert the specified rule. If the specified index 
053         *   is equal to the length of the style sheet's rule collection, the 
054         *   rule will be added to the end of the style sheet. 
055         * @return  The index within the style sheet's rule collection of the 
056         *   newly inserted rule. 
057         * @exception DOMException
058         *   HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at the 
059         *   specified index e.g. if an <code>@import</code> rule is inserted 
060         *   after a standard rule set or other at-rule.
061         *   <br>INDEX_SIZE_ERR: Raised if the specified index is not a valid 
062         *   insertion point.
063         *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this style sheet is 
064         *   readonly.
065         *   <br>SYNTAX_ERR: Raised if the specified rule has a syntax error and 
066         *   is unparsable.
067         */
068        public int insertRule(String rule, 
069                              int index)
070                              throws DOMException;
071    
072        /**
073         *  Used to delete a rule from the style sheet. 
074         * @param index  The index within the style sheet's rule list of the rule 
075         *   to remove. 
076         * @exception DOMException
077         *   INDEX_SIZE_ERR: Raised if the specified index does not correspond to 
078         *   a rule in the style sheet's rule list.
079         *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if this style sheet is 
080         *   readonly.
081         */
082        public void deleteRule(int index)
083                               throws DOMException;
084    
085    }