library/HTMLPurifier/AttrDef/CSS/AlphaValue.php

   1 <?php
   2
   3 class HTMLPurifier_AttrDef_CSS_AlphaValue extends HTMLPurifier_AttrDef_CSS_Number
   4 {
   5
   6     public function __construct()
   7     {
   8         parent::__construct(false); // opacity is non-negative, but we will clamp it
   9     }
  10
  11     /**
  12      * @param string $number
  13      * @param HTMLPurifier_Config $config
  14      * @param HTMLPurifier_Context $context
  15      * @return string
  16      */
  17     public function validate($number, $config, $context)
  18     {
  19         $result = parent::validate($number, $config, $context);
  20         if ($result === false) {
  21             return $result;
  22         }
  23         $float = (float)$result;
  24         if ($float < 0.0) {
  25             $result = '0';
  26         }
  27         if ($float > 1.0) {
  28             $result = '1';
  29         }
  30         return $result;
  31     }
  32 }
  33
  34 // vim: et sw=4 sts=4