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 * This file is available under and governed by the GNU General Public
 * License version 2 only, as published by the Free Software Foundation.
 * However, the following notice accompanied the original version of this
 * file and, per its terms, should not be removed:
 *
 * 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
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package org.w3c.dom.css;

import org.w3c.dom.DOMException;


 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:1.4, DOM Level 2
/**
 *  The <code>CSSRule</code> 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 <code>CSSUnknownRule</code> interface.
 * <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 1.4, DOM Level 2
 */
public interface CSSRule {
    // RuleType
    
The rule is a CSSUnknownRule.

/**
     * The rule is a <code>CSSUnknownRule</code>.
     */
    public static final short UNKNOWN_RULE              = 0;
    
The rule is a CSSStyleRule.

/**
     * The rule is a <code>CSSStyleRule</code>.
     */
    public static final short STYLE_RULE                = 1;
    
The rule is a CSSCharsetRule.

/**
     * The rule is a <code>CSSCharsetRule</code>.
     */
    public static final short CHARSET_RULE              = 2;
    
The rule is a CSSImportRule.

/**
     * The rule is a <code>CSSImportRule</code>.
     */
    public static final short IMPORT_RULE               = 3;
    
The rule is a CSSMediaRule.

/**
     * The rule is a <code>CSSMediaRule</code>.
     */
    public static final short MEDIA_RULE                = 4;
    
The rule is a CSSFontFaceRule.

/**
     * The rule is a <code>CSSFontFaceRule</code>.
     */
    public static final short FONT_FACE_RULE            = 5;
    
The rule is a CSSPageRule.

/**
     * The rule is a <code>CSSPageRule</code>.
     */
    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.

/**
     *  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 <code>CSSRule</code> interface to the specific
     * derived interface implied by the <code>type</code>.
     */
    public short getType();

    
 The parsable textual representation of the rule. This reflects the
current state of the rule and not its initial value.

/**
     *  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:
  • 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.
/**
     *  The parsable textual representation of the rule. This reflects the
     * current state of the rule and not its initial value.
     * @exception DOMException
     *   SYNTAX_ERR: Raised if the specified CSS string value has a syntax
     *   error and is unparsable.
     *   <br>INVALID_MODIFICATION_ERR: Raised if the specified CSS string
     *   value represents a different type of rule than the current one.
     *   <br>HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at
     *   this point in the style sheet.
     *   <br>NO_MODIFICATION_ALLOWED_ERR: Raised if the rule is readonly.
     */
    public void setCssText(String cssText)
                        throws DOMException;

    
 The style sheet that contains this rule.

/**
     *  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.

/**
     *  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 <code>null</code>.
     */
    public CSSRule getParentRule();

}