lib/htmlpurifier/HTMLPurifier/ChildDef/Chameleon.php

   1 <?php
   2
   3 require_once 'HTMLPurifier/ChildDef.php';
   4
   5 /**
   6  * Definition that uses different definitions depending on context.
   7  *
   8  * The del and ins tags are notable because they allow different types of
   9  * elements depending on whether or not they're in a block or inline context.
  10  * Chameleon allows this behavior to happen by using two different
  11  * definitions depending on context.  While this somewhat generalized,
  12  * it is specifically intended for those two tags.
  13  */
  14 class HTMLPurifier_ChildDef_Chameleon extends HTMLPurifier_ChildDef
  15 {
  16
  17     /**
  18      * Instance of the definition object to use when inline. Usually stricter.
  19      * @public
  20      */
  21     var $inline;
  22
  23     /**
  24      * Instance of the definition object to use when block.
  25      * @public
  26      */
  27     var $block;
  28
  29     var $type = 'chameleon';
  30
  31     /**
  32      * @param $inline List of elements to allow when inline.
  33      * @param $block List of elements to allow when block.
  34      */
  35     function HTMLPurifier_ChildDef_Chameleon($inline, $block) {
  36         $this->inline = new HTMLPurifier_ChildDef_Optional($inline);
  37         $this->block  = new HTMLPurifier_ChildDef_Optional($block);
  38         $this->elements = $this->block->elements;
  39     }
  40
  41     function validateChildren($tokens_of_children, $config, &$context) {
  42         if ($context->get('IsInline') === false) {
  43             return $this->block->validateChildren(
  44                 $tokens_of_children, $config, $context);
  45         } else {
  46             return $this->inline->validateChildren(
  47                 $tokens_of_children, $config, $context);
  48         }
  49     }
  50 }
  51