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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;
The CSSRule interface is the abstract base interface for any type of CSS statement. This includes both rule sets and at-rules. An implementation is expected to preserve all rules specified in a CSS style sheet, even if the rule is not recognized by the parser. Unrecognized rules are represented using the CSSUnknownRule interface.

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

Since:
DOM Level 2
public interface CSSRule {
    // RuleType
    
The rule is a CSSUnknownRule.
    public static final short UNKNOWN_RULE              = 0;
    
The rule is a CSSStyleRule.
    public static final short STYLE_RULE                = 1;
    
The rule is a CSSCharsetRule.
    public static final short CHARSET_RULE              = 2;
    
The rule is a CSSImportRule.
    public static final short IMPORT_RULE               = 3;
    
The rule is a CSSMediaRule.
    public static final short MEDIA_RULE                = 4;
    
The rule is a CSSFontFaceRule.
    public static final short FONT_FACE_RULE            = 5;
    
The rule is a CSSPageRule.
    public static final short PAGE_RULE                 = 6;

    
The type of the rule, as defined above. The expectation is that binding-specific casting methods can be used to cast down from an instance of the CSSRule interface to the specific derived interface implied by the type.
    public short getType();

    
The parsable textual representation of the rule. This reflects the current state of the rule and not its initial value.
    public String getCssText();
    
The parsable textual representation of the rule. This reflects the current state of the rule and not its initial value.

Throws:
org.w3c.dom.DOMException SYNTAX_ERR: Raised if the specified CSS string value has a syntax error and is unparsable.
INVALID_MODIFICATION_ERR: Raised if the specified CSS string value represents a different type of rule than the current one.
HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at this point in the style sheet.
NO_MODIFICATION_ALLOWED_ERR: Raised if the rule is readonly.
    public void setCssText(String cssText)
                        throws DOMException;

    
The style sheet that contains this rule.
    public CSSStyleSheet getParentStyleSheet();

    
If this rule is contained inside another rule (e.g. a style rule inside an

Media:
block), this is the containing rule. If this rule is not nested inside any other rules, this returns null.
    public CSSRule getParentRule();
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