File indexing completed on 2024-12-22 05:36:18

 <?php
 
 /**
  * Decorator which enables !important to be used in CSS values.
  */
 class HTMLPurifier_AttrDef_CSS_ImportantDecorator extends HTMLPurifier_AttrDef
 {
     /**
      * @type HTMLPurifier_AttrDef
      */
     public $def;
     /**
      * @type bool
      */
     public $allow;
 
     /**
      * @param HTMLPurifier_AttrDef $def Definition to wrap
      * @param bool $allow Whether or not to allow !important
      */
     public function __construct($def, $allow = false)
     {
         $this->def = $def;
         $this->allow = $allow;
     }
 
     /**
      * Intercepts and removes !important if necessary
      * @param string $string
      * @param HTMLPurifier_Config $config
      * @param HTMLPurifier_Context $context
      * @return bool|string
      */
     public function validate($string, $config, $context)
     {
         // test for ! and important tokens
         $string = trim($string);
         $is_important = false;
         // :TODO: optimization: test directly for !important and ! important
         if (strlen($string) >= 9 && substr($string, -9) === 'important') {
             $temp = rtrim(substr($string, 0, -9));
             // use a temp, because we might want to restore important
             if (strlen($temp) >= 1 && substr($temp, -1) === '!') {
                 $string = rtrim(substr($temp, 0, -1));
                 $is_important = true;
             }
         }
         $string = $this->def->validate($string, $config, $context);
         if ($this->allow && $is_important) {
             $string .= ' !important';
         }
         return $string;
     }
 }
 
 // vim: et sw=4 sts=4