library/HTMLPurifier/AttrTransform/ImgSpace.php

   1 <?php
   2
   3 /**
   4  * Pre-transform that changes deprecated hspace and vspace attributes to CSS
   5  */
   6 class HTMLPurifier_AttrTransform_ImgSpace extends HTMLPurifier_AttrTransform {
   7
   8     protected $attr;
   9     protected $css = array(
  10         'hspace' => array('left', 'right'),
  11         'vspace' => array('top', 'bottom')
  12     );
  13
  14     public function __construct($attr) {
  15         $this->attr = $attr;
  16         if (!isset($this->css[$attr])) {
  17             trigger_error(htmlspecialchars($attr) . ' is not valid space attribute');
  18         }
  19     }
  20
  21     public function transform($attr, $config, $context) {
  22
  23         if (!isset($attr[$this->attr])) return $attr;
  24
  25         $width = $this->confiscateAttr($attr, $this->attr);
  26         // some validation could happen here
  27
  28         if (!isset($this->css[$this->attr])) return $attr;
  29
  30         $style = '';
  31         foreach ($this->css[$this->attr] as $suffix) {
  32             $property = "margin-$suffix";
  33             $style .= "$property:{$width}px;";
  34         }
  35
  36         $this->prependCSS($attr, $style);
  37
  38         return $attr;
  39
  40     }
  41
  42 }
  43
  44 // vim: et sw=4 sts=4