library/HTMLPurifier/AttrTransform/BoolToCSS.php

   1 <?php
   2
   3 /**
   4  * Pre-transform that changes converts a boolean attribute to fixed CSS
   5  */
   6 class HTMLPurifier_AttrTransform_BoolToCSS extends HTMLPurifier_AttrTransform {
   7
   8     /**
   9      * Name of boolean attribute that is trigger
  10      */
  11     protected $attr;
  12
  13     /**
  14      * CSS declarations to add to style, needs trailing semicolon
  15      */
  16     protected $css;
  17
  18     /**
  19      * @param $attr string attribute name to convert from
  20      * @param $css string CSS declarations to add to style (needs semicolon)
  21      */
  22     public function __construct($attr, $css) {
  23         $this->attr = $attr;
  24         $this->css  = $css;
  25     }
  26
  27     public function transform($attr, $config, $context) {
  28         if (!isset($attr[$this->attr])) return $attr;
  29         unset($attr[$this->attr]);
  30         $this->prependCSS($attr, $this->css);
  31         return $attr;
  32     }
  33
  34 }
  35
  36 // vim: et sw=4 sts=4