inc/3rdparty/htmlpurifier/HTMLPurifier/AttrDef/CSS/TextDecoration.php

   1 <?php
   2
   3 /**
   4  * Validates the value for the CSS property text-decoration
   5  * @note This class could be generalized into a version that acts sort of
   6  *       like Enum except you can compound the allowed values.
   7  */
   8 class HTMLPurifier_AttrDef_CSS_TextDecoration extends HTMLPurifier_AttrDef
   9 {
  10
  11     /**
  12      * @param string $string
  13      * @param HTMLPurifier_Config $config
  14      * @param HTMLPurifier_Context $context
  15      * @return bool|string
  16      */
  17     public function validate($string, $config, $context)
  18     {
  19         static $allowed_values = array(
  20             'line-through' => true,
  21             'overline' => true,
  22             'underline' => true,
  23         );
  24
  25         $string = strtolower($this->parseCDATA($string));
  26
  27         if ($string === 'none') {
  28             return $string;
  29         }
  30
  31         $parts = explode(' ', $string);
  32         $final = '';
  33         foreach ($parts as $part) {
  34             if (isset($allowed_values[$part])) {
  35                 $final .= $part . ' ';
  36             }
  37         }
  38         $final = rtrim($final);
  39         if ($final === '') {
  40             return false;
  41         }
  42         return $final;
  43     }
  44 }
  45
  46 // vim: et sw=4 sts=4