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   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      public function validate($string, $config, $context) {
  12  
  13          static $allowed_values = array(
  14              'line-through' => true,
  15              'overline' => true,
  16              'underline' => true,
  17          );
  18  
  19          $string = strtolower($this->parseCDATA($string));
  20  
  21          if ($string === 'none') return $string;
  22  
  23          $parts = explode(' ', $string);
  24          $final = '';
  25          foreach ($parts as $part) {
  26              if (isset($allowed_values[$part])) {
  27                  $final .= $part . ' ';
  28              }
  29          }
  30          $final = rtrim($final);
  31          if ($final === '') return false;
  32          return $final;
  33  
  34      }
  35  
  36  }
  37  
  38  // vim: et sw=4 sts=4