## org.w3c.dom.css
Interface CSSRule

All Known Subinterfaces:
  CSSCharsetRule, CSSFontFaceRule, CSSImportRule, CSSMediaRule, CSSPageRule, CSSStyleRule, CSSUnknownRule

public interface CSSRule

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

Field Summary
`static short` `CHARSET_RULE` The rule is a `CSSCharsetRule`.
`static short` `FONT_FACE_RULE` The rule is a `CSSFontFaceRule`.
`static short` `IMPORT_RULE` The rule is a `CSSImportRule`.
`static short` `MEDIA_RULE` The rule is a `CSSMediaRule`.
`static short` `PAGE_RULE` The rule is a `CSSPageRule`.
`static short` `STYLE_RULE` The rule is a `CSSStyleRule`.
`static short` `UNKNOWN_RULE` The rule is a `CSSUnknownRule`.

Method Summary
`java.lang.String` `getCssText()` The parsable textual representation of the rule.
`CSSRule` `getParentRule()` If this rule is contained inside another rule (e.g.
`CSSStyleSheet` `getParentStyleSheet()` The style sheet that contains this rule.
`short` `getType()` The type of the rule, as defined above.
`void` `setCssText(java.lang.String cssText)` The parsable textual representation of the rule.

Field Detail

### UNKNOWN_RULE

    public static final short UNKNOWN_RULE

  The rule is a `CSSUnknownRule`.

### STYLE_RULE

    public static final short STYLE_RULE

  The rule is a `CSSStyleRule`.

### CHARSET_RULE

    public static final short CHARSET_RULE

  The rule is a `CSSCharsetRule`.

### IMPORT_RULE

    public static final short IMPORT_RULE

  The rule is a `CSSImportRule`.

### MEDIA_RULE

    public static final short MEDIA_RULE

  The rule is a `CSSMediaRule`.

### FONT_FACE_RULE

    public static final short FONT_FACE_RULE

  The rule is a `CSSFontFaceRule`.

### PAGE_RULE

    public static final short PAGE_RULE

  The rule is a `CSSPageRule`.

Method Detail

### getType

    public short getType()

  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`.

### getCssText

    public java.lang.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.

### setCssText

    public void setCssText(java.lang.String cssText)
                    throws DOMException

  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.

### getParentStyleSheet

    public CSSStyleSheet getParentStyleSheet()

  The style sheet that contains this rule.

### getParentRule

    public CSSRule getParentRule()

  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`.

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