4 * Pre-transform that changes proprietary background attribute to CSS.
6 class HTMLPurifier_AttrTransform_Background extends HTMLPurifier_AttrTransform
10 * @param HTMLPurifier_Config $config
11 * @param HTMLPurifier_Context $context
14 public function transform($attr, $config, $context)
16 if (!isset($attr['background'])) {
20 $background = $this->confiscateAttr($attr, 'background');
21 // some validation should happen here
23 $this->prependCSS($attr, "background-image:url($background);");