4 * Validates a Percentage as defined by the CSS spec.
6 class HTMLPurifier_AttrDef_CSS_Percentage
extends HTMLPurifier_AttrDef
10 * Instance to defer number validation to.
11 * @type HTMLPurifier_AttrDef_CSS_Number
13 protected $number_def;
16 * @param bool $non_negative Whether to forbid negative values
18 public function __construct($non_negative = false)
20 $this->number_def
= new HTMLPurifier_AttrDef_CSS_Number($non_negative);
24 * @param string $string
25 * @param HTMLPurifier_Config $config
26 * @param HTMLPurifier_Context $context
29 public function validate($string, $config, $context)
31 $string = $this->parseCDATA($string);
36 $length = strlen($string);
40 if ($string[$length - 1] !== '%') {
44 $number = substr($string, 0, $length - 1);
45 $number = $this->number_def
->validate($number, $config, $context);
47 if ($number === false) {