Subversion-Projekte lars-tiefland.php_share

<?php

// $Header: /cvsroot/html2ps/css.content.inc.php,v 1.8 2007/03/15 18:37:30 Konstantin Exp $

require_once(HTML2PS_DIR.'value.content.php');

/**

 * Handles 'content' CSS property (

 *

 * 'content'

 *  Value:   normal   |   [   <string>   |   <uri>   |   <counter>   |

 *  attr(<identifier>)  | open-quote |  close-quote |  no-open-quote |

 *  no-close-quote ]+ | inherit

 *  Initial:  	normal

 *  Applies to:  	:before and :after pseudo-elements

 *  Inherited:  	no

 *  Percentages:  	N/A

 *  Media:  	all

 *  Computed  value: for  URI  values, the  absolute  URI; for  attr()

 *  values, the resulting string; otherwise as specified

 *

 * This property  is used with the :before  and :after pseudo-elements

 * to  generate  content in  a  document.  Values  have the  following

 * meanings:

 *

 * normal

 *    The pseudo-element is not generated.

 * <string>

 *    Text content (see the section on strings).

 * <uri>

 *    The value  is a URI that  designates an external  resource. If a

 *    user  agent cannot  support the  resource because  of  the media

 *    types it supports, it must ignore the resource.

 * <counter>

 *    Counters  may   be  specified  with   two  different  functions:

 *    'counter()'   or  'counters()'.  The   former  has   two  forms:

 *    'counter(name)' or 'counter(name, style)'. The generated text is

 *    the value of  the named counter at this  point in the formatting

 *    structure; it is formatted  in the indicated style ('decimal' by

 *    default).   The   latter    function   also   has   two   forms:

 *    'counters(name, string)' or 'counters(name, string, style)'. The

 *    generated text is the value  of all counters with the given name

 *    at  this point  in the  formatting structure,  separated  by the

 *    specified  string. The  counters are  rendered in  the indicated

 *    style  ('decimal'  by default).  See  the  section on  automatic

 *    counters and numbering for more information.

 * open-quote and close-quote

 *    These  values are replaced  by the  appropriate string  from the

 *    'quotes' property.

 * no-open-quote and no-close-quote

 *    Same as 'none', but increments (decrements) the level of nesting

 *    for quotes.

 * attr(X)

 *    This function returns  as a string the value  of attribute X for

 *    the subject of the selector. The string is not parsed by the CSS

 *    processor.  If  the subject  of  the  selector  doesn't have  an

 *    attribute X,  an empty string is  returned. The case-sensitivity

 *    of attribute  names depends on  the document language.  Note. In

 *    CSS 2.1,  it is  not possible to  refer to attribute  values for

 *    other elements than the subject of the selector.

 */

class CSSContent extends CSSPropertyHandler {

  function CSSContent() {

    $this->CSSPropertyHandler(false, false);

  }

  function &default_value() {

    $data =& new ValueContent();

    return $data;

  }

  // CSS 2.1 p 12.2:

  // Value: [ <string> | <uri> | <counter> | attr(X) | open-quote | close-quote | no-open-quote | no-close-quote ]+ | inherit

  //

  // TODO: process values other than <string>

  //

  function &parse($value) {

    if ($value == 'inherit') {

      return CSS_PROPERTY_INHERIT;

    };

    $value_obj =& ValueContent::parse($value);

    return $value_obj;

  }

  function get_property_code() {

    return CSS_CONTENT;

  }

  function get_property_name() {

    return 'content';

  }

}

CSS::register_css_property(new CSSContent);

?>