NAME

       CSS - Object oriented access to Cascading Style Sheets (CSS)

SYNOPSIS

         use CSS;

         # create a CSS object with the default options
         my $css = CSS->new();

         # create a CSS object with a specific parser
         my $css = CSS->new( { 'parser' => 'CSS::Parse::Lite' } );
         my $css = CSS->new( { 'parser' => 'CSS::Parse::Heavy' } );
         my $css = CSS->new( { 'parser' => 'CSS::Parse::Compiled' } );

         # create a CSS object with a specific adaptor
         my $css = CSS->new( { 'adaptor' => 'CSS::Adaptor' } );
         my $css = CSS->new( { 'adaptor' => 'CSS::Adaptor::Pretty' } );
         my $css = CSS->new( { 'adaptor' => 'CSS::Adaptor::Debug' } );

         # parse some CSS from a string
         $css->read_string( $css_data );
         $css->read_string( ( $css_data, $more_css_data ) );

         # parse some CSS from a file
         $css->read_file( 'my_file.css' );
         $css->read_file( ( 'my_file.css', 'my_other_file.css' ) );

         # output the CSS using the current adaptor
         print $css->output();

         # set a new adaptor and then output the CSS
         $css->set_adaptor( 'CSS::Adaptor::Foo' );
         print $css->output();

         # output the CSS using a tempory adaptor
         print $css->output( 'CSS::Adaptor::Bar' );

         # forget about the CSS we've already parsed
         $css->purge();

DESCRIPTION

       This module can be used, along with a CSS::Parse::* module, to parse CSS data and represent it as a tree
       of objects. Using a CSS::Adaptor::* module, the CSS data tree can then be transformed into other formats.

NOTICE

       From version 1.00 of this module onwards, backwards compatibility is broken. This is due to large changes
       in the way data is parsed and then represented internally. Version 0.08 is still available on CPAN:
       <http://search.cpan.org/author/IAMCAL/CSS-0.08/>

TREE STRUCTURE

       The CSS object is the head of the tree. It contains a list of CSS::Style objects which each represent a
       CSS ruleset. Each of these objects contains a list of selectors and properties. Each selector is stored
       as a CSS::Selector object. Each property object is stored as a CSS::Property object and contains a list
       of values. These values are stored as CSS::Value objects.

         foo, bar {
             baz: fop;
             woo: yay houpla;
         }

       The above example would be represented as a single CSS::Style object.  That object would then have two
       CSS::Selector objects representing 'foo' and 'bar'. It would also have two CSS::Property objects
       representing 'baz' and 'woo'. The 'baz' object then has a single child CSS::Value object for 'fop',
       whilst the 'woo' object has two child objects for 'yay' and 'houpla'.

METHODS

   CONSTRUCTOR
       "new()" or "new( { ..options.. } )"
           An optional hash can contain arguments:

             parser        module to use as the CSS parser
             adaptor       adaptor to use for output

   ACCESSORS
       "read_file( $filename )" or "read_file( @filenames )"
           Read one or mores files and parse the CSS within them.

       "read_string( $scalar )" or "read_string( @strings )"
           Read one or more strings and parse the CSS within them.

       "output()" or "output( 'CSS::Adaptor::Foo' )"
           Return a string representation of the CSS tree, using either the current adaptor or the specified
           one.

       "set_adaptor( 'CSS::Adaptor::Bar' )"
           Set the current adaptor for the CSS tree.

       "purge()"
           Forget all the objects in the CSS tree;

       "get_style_by_selector( 'selector_name' )"
           Returns the first CSS::Style object with the specified selector name attached. Returns zero on
           failure.

AUTHORS

       Copyright (C) 2001-2002, Allen Day <allenday@ucla.edu>

       Copyright (C) 2003-2004, Cal Henderson <cal@iamcal.com>

SEE ALSO

       CSS::Style, CSS::Selector, CSS::Property, CSS::Value, CSS::Parse, CSS::Parse::Lite, CSS::Parse::Heavy,
       CSS::Parse::Compiled, CSS::Parse::PRDGrammar, CSS::Adaptor, CSS::Adaptor::Pretty, CSS::Adaptor::Debug,
       perl(1)