library/HTMLPurifier/AttrDef/Switch.php

   1 <?php
   2
   3 /**
   4  * Decorator that, depending on a token, switches between two definitions.
   5  */
   6 class HTMLPurifier_AttrDef_Switch
   7 {
   8
   9     /**
  10      * @type string
  11      */
  12     protected $tag;
  13
  14     /**
  15      * @type HTMLPurifier_AttrDef
  16      */
  17     protected $withTag;
  18
  19     /**
  20      * @type HTMLPurifier_AttrDef
  21      */
  22     protected $withoutTag;
  23
  24     /**
  25      * @param string $tag Tag name to switch upon
  26      * @param HTMLPurifier_AttrDef $with_tag Call if token matches tag
  27      * @param HTMLPurifier_AttrDef $without_tag Call if token doesn't match, or there is no token
  28      */
  29     public function __construct($tag, $with_tag, $without_tag)
  30     {
  31         $this->tag = $tag;
  32         $this->withTag = $with_tag;
  33         $this->withoutTag = $without_tag;
  34     }
  35
  36     /**
  37      * @param string $string
  38      * @param HTMLPurifier_Config $config
  39      * @param HTMLPurifier_Context $context
  40      * @return bool|string
  41      */
  42     public function validate($string, $config, $context)
  43     {
  44         $token = $context->get('CurrentToken', true);
  45         if (!$token || $token->name !== $this->tag) {
  46             return $this->withoutTag->validate($string, $config, $context);
  47         } else {
  48             return $this->withTag->validate($string, $config, $context);
  49         }
  50     }
  51 }
  52
  53 // vim: et sw=4 sts=4