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   1  <?php
   2  
   3  /**
   4   * Special-case enum attribute definition that lazy loads allowed frame targets
   5   */
   6  class HTMLPurifier_AttrDef_HTML_FrameTarget extends HTMLPurifier_AttrDef_Enum
   7  {
   8  
   9      /**
  10       * @type array
  11       */
  12      public $valid_values = false; // uninitialized value
  13  
  14      /**
  15       * @type bool
  16       */
  17      protected $case_sensitive = false;
  18  
  19      public function __construct()
  20      {
  21      }
  22  
  23      /**
  24       * @param string $string
  25       * @param HTMLPurifier_Config $config
  26       * @param HTMLPurifier_Context $context
  27       * @return bool|string
  28       */
  29      public function validate($string, $config, $context)
  30      {
  31          if ($this->valid_values === false) {
  32              $this->valid_values = $config->get('Attr.AllowedFrameTargets');
  33          }
  34          return parent::validate($string, $config, $context);
  35      }
  36  }
  37  
  38  // vim: et sw=4 sts=4