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Commit | Line | Data |
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f45a286b AD |
1 | <?php |
2 | ||
3 | /** | |
4 | * Decorator which enables !important to be used in CSS values. | |
5 | */ | |
6 | class HTMLPurifier_AttrDef_CSS_ImportantDecorator extends HTMLPurifier_AttrDef | |
7 | { | |
8 | public $def, $allow; | |
9 | ||
10 | /** | |
11 | * @param $def Definition to wrap | |
12 | * @param $allow Whether or not to allow !important | |
13 | */ | |
14 | public function __construct($def, $allow = false) { | |
15 | $this->def = $def; | |
16 | $this->allow = $allow; | |
17 | } | |
18 | /** | |
19 | * Intercepts and removes !important if necessary | |
20 | */ | |
21 | public function validate($string, $config, $context) { | |
22 | // test for ! and important tokens | |
23 | $string = trim($string); | |
24 | $is_important = false; | |
25 | // :TODO: optimization: test directly for !important and ! important | |
26 | if (strlen($string) >= 9 && substr($string, -9) === 'important') { | |
27 | $temp = rtrim(substr($string, 0, -9)); | |
28 | // use a temp, because we might want to restore important | |
29 | if (strlen($temp) >= 1 && substr($temp, -1) === '!') { | |
30 | $string = rtrim(substr($temp, 0, -1)); | |
31 | $is_important = true; | |
32 | } | |
33 | } | |
34 | $string = $this->def->validate($string, $config, $context); | |
35 | if ($this->allow && $is_important) $string .= ' !important'; | |
36 | return $string; | |
37 | } | |
38 | } | |
39 | ||
40 | // vim: et sw=4 sts=4 |