NAME

       CSS::DOM::Rule - CSS rule class for CSS::DOM

VERSION

       Version 0.16

SYNOPSIS

         use CSS::DOM::Rule ':all'; # import constants

         use CSS::DOM;
         $sheet = new CSS::DOM;
         $sheet->insertRule('bla blah blah {}');
         $rule = $sheet->cssRules->[0];

         $rule->type; # STYLE_RULE
         $rule->cssText; # 'bla blah blah {}' or similar
         $rule->cssText('p { margin: 0 }'); # replace it
         $rule->parentStyleSheet; # $sheet

DESCRIPTION

       This module provides the CSS rule class for CSS::DOM. It implements the CSSRule and
       CSSUnknownRule DOM interfaces.

METHODS

   Constructor
       Only call the constructor on this class to create an 'unknown' rule. You have to call the
       constructor on a particular subclass to get another type. Normally you do not need to call
       this directly anyway. (See CSS::DOM's "parse" and "insertRule" methods.) But just in case
       you do want to call it, here it is:

         new CSS::DOM::Rule $parent; # unknown rule

         require CSS::DOM::Rule::Style
         new CSS::DOM::Rule::Style $parent;
         # etc.

       $parent is the parent rule, if the rule is nested, or the parent style sheet otherwise.

   Object Methods
       type
           Returns one of the constants below indicating the type of rule.

       cssText
           Returns this rule's CSS code. If you pass an argument, it will be parsed as the new
           CSS code for this rule (replacing the existing data), and the old value will be
           returned. This method will die if the replacement CSS code creates a different type of
           rule.

       parentStyleSheet
           This returns the style sheet to which the rule belongs.

       parentRule
           This returns the rule's parent rule, if there is one, or an empty list otherwise.
           There is only a parent rule if this one is nested, e.g., inside a media rule.

EXPORTS

       The following constants that indicate the type of rule will be exported on request
       (individually or with the ':all' tag):

         UNKNOWN_RULE
         STYLE_RULE
         CHARSET_RULE
         IMPORT_RULE
         MEDIA_RULE
         FONT_FACE_RULE
         PAGE_RULE

SEE ALSO

       CSS::DOM

       CSS::DOM::Rule::Style

       CSS::DOM::Rule::Media

       CSS::DOM::Rule::Page

       CSS::DOM::Rule::Import