Proyectos de Subversion Moodle

Rev

| Ultima modificación | Ver Log |

Rev Autor Línea Nro. Línea
1 efrain 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 
    /**
9 
     * @type HTMLPurifier_AttrDef
10 
     */
11 
    public $def;
12 
    /**
13 
     * @type bool
14 
     */
15 
    public $allow;
16 
 
17 
    /**
18 
     * @param HTMLPurifier_AttrDef $def Definition to wrap
19 
     * @param bool $allow Whether or not to allow !important
20 
     */
21 
    public function __construct($def, $allow = false)
22 
    {
23 
        $this->def = $def;
24 
        $this->allow = $allow;
25 
    }
26 
 
27 
    /**
28 
     * Intercepts and removes !important if necessary
29 
     * @param string $string
30 
     * @param HTMLPurifier_Config $config
31 
     * @param HTMLPurifier_Context $context
32 
     * @return bool|string
33 
     */
34 
    public function validate($string, $config, $context)
35 
    {
36 
        // test for ! and important tokens
37 
        $string = trim($string);
38 
        $is_important = false;
39 
        // :TODO: optimization: test directly for !important and ! important
40 
        if (strlen($string) >= 9 && substr($string, -9) === 'important') {
41 
            $temp = rtrim(substr($string, 0, -9));
42 
            // use a temp, because we might want to restore important
43 
            if (strlen($temp) >= 1 && substr($temp, -1) === '!') {
44 
                $string = rtrim(substr($temp, 0, -1));
45 
                $is_important = true;
46 
            }
47 
        }
48 
        $string = $this->def->validate($string, $config, $context);
49 
        if ($this->allow && $is_important) {
50 
            $string .= ' !important';
51 
        }
52 
        return $string;
53 
    }
54 
}
55 
 
56 
// vim: et sw=4 sts=4