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   1  <?php
   2  
   3  /**
   4   * Pre-transform that changes deprecated bgcolor attribute to CSS.
   5   */
   6  class HTMLPurifier_AttrTransform_BgColor extends HTMLPurifier_AttrTransform
   7  {
   8      /**
   9       * @param array $attr
  10       * @param HTMLPurifier_Config $config
  11       * @param HTMLPurifier_Context $context
  12       * @return array
  13       */
  14      public function transform($attr, $config, $context)
  15      {
  16          if (!isset($attr['bgcolor'])) {
  17              return $attr;
  18          }
  19  
  20          $bgcolor = $this->confiscateAttr($attr, 'bgcolor');
  21          // some validation should happen here
  22  
  23          $this->prependCSS($attr, "background-color:$bgcolor;");
  24          return $attr;
  25      }
  26  }
  27  
  28  // vim: et sw=4 sts=4