library/HTMLPurifier/AttrTransform/ImgSpace.php

   1 <?php
   2
   3 require_once 'HTMLPurifier/AttrTransform.php';
   4
   5 /**
   6  * Pre-transform that changes deprecated hspace and vspace attributes to CSS
   7  */
   8 class HTMLPurifier_AttrTransform_ImgSpace
   9 extends HTMLPurifier_AttrTransform {
  10
  11     var $attr;
  12     var $css = array(
  13         'hspace' => array('left', 'right'),
  14         'vspace' => array('top', 'bottom')
  15     );
  16
  17     function HTMLPurifier_AttrTransform_ImgSpace($attr) {
  18         $this->attr = $attr;
  19         if (!isset($this->css[$attr])) {
  20             trigger_error(htmlspecialchars($attr) . ' is not valid space attribute');
  21         }
  22     }
  23
  24     function transform($attr, $config, &$context) {
  25
  26         if (!isset($attr[$this->attr])) return $attr;
  27
  28         $width = $this->confiscateAttr($attr, $this->attr);
  29         // some validation could happen here
  30
  31         if (!isset($this->css[$this->attr])) return $attr;
  32
  33         $style = '';
  34         foreach ($this->css[$this->attr] as $suffix) {
  35             $property = "margin-$suffix";
  36             $style .= "$property:{$width}px;";
  37         }
  38
  39         $this->prependCSS($attr, $style);
  40
  41         return $attr;
  42
  43     }
  44
  45 }
  46
  47 ?>