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         parent::__construct(false); // opacity is non-negative, but we will clamp it
   8     }
   9
  10     public function validate($number, $config, $context) {
  11         $result = parent::validate($number, $config, $context);
  12         if ($result === false) return $result;
  13         $float = (float) $result;
  14         if ($float < 0.0) $result = '0';
  15         if ($float > 1.0) $result = '1';
  16         return $result;
  17     }
  18
  19 }
  20
  21 // vim: et sw=4 sts=4