4 * Pre-transform that changes deprecated hspace and vspace attributes to CSS
6 class HTMLPurifier_AttrTransform_ImgSpace extends HTMLPurifier_AttrTransform {
9 protected $css = array(
10 'hspace' => array('left', 'right'),
11 'vspace' => array('top', 'bottom')
14 public function __construct($attr) {
16 if (!isset($this->css[$attr])) {
17 trigger_error(htmlspecialchars($attr) . ' is not valid space attribute');
21 public function transform($attr, $config, $context) {
23 if (!isset($attr[$this->attr])) return $attr;
25 $width = $this->confiscateAttr($attr, $this->attr);
26 // some validation could happen here
28 if (!isset($this->css[$this->attr])) return $attr;
31 foreach ($this->css[$this->attr] as $suffix) {
32 $property = "margin-$suffix";
33 $style .= "$property:{$width}px;";
36 $this->prependCSS($attr, $style);