diff options
Diffstat (limited to 'lib/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/ImportantDecorator.php')
-rw-r--r-- | lib/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/ImportantDecorator.php | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/lib/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/ImportantDecorator.php b/lib/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/ImportantDecorator.php new file mode 100644 index 000000000..4e6b35e5a --- /dev/null +++ b/lib/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/ImportantDecorator.php @@ -0,0 +1,40 @@ +<?php + +/** + * Decorator which enables !important to be used in CSS values. + */ +class HTMLPurifier_AttrDef_CSS_ImportantDecorator extends HTMLPurifier_AttrDef +{ + public $def, $allow; + + /** + * @param $def Definition to wrap + * @param $allow Whether or not to allow !important + */ + public function __construct($def, $allow = false) { + $this->def = $def; + $this->allow = $allow; + } + /** + * Intercepts and removes !important if necessary + */ + public function validate($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 |