Proyectos de Subversion Moodle

Rev

| Ultima modificación | Ver Log |

Rev Autor Línea Nro. Línea
1 efrain 1 
<?php
2 
 
3 
// must be called POST validation
4 
 
5 
/**
6 
 * Transform that supplies default values for the src and alt attributes
7 
 * in img tags, as well as prevents the img tag from being removed
8 
 * because of a missing alt tag. This needs to be registered as both
9 
 * a pre and post attribute transform.
10 
 */
11 
class HTMLPurifier_AttrTransform_ImgRequired extends HTMLPurifier_AttrTransform
12 
{
13 
 
14 
    /**
15 
     * @param array $attr
16 
     * @param HTMLPurifier_Config $config
17 
     * @param HTMLPurifier_Context $context
18 
     * @return array
19 
     */
20 
    public function transform($attr, $config, $context)
21 
    {
22 
        $src = true;
23 
        if (!isset($attr['src'])) {
24 
            if ($config->get('Core.RemoveInvalidImg')) {
25 
                return $attr;
26 
            }
27 
            $attr['src'] = $config->get('Attr.DefaultInvalidImage');
28 
            $src = false;
29 
        }
30 
 
31 
        if (!isset($attr['alt'])) {
32 
            if ($src) {
33 
                $alt = $config->get('Attr.DefaultImageAlt');
34 
                if ($alt === null) {
35 
                    $attr['alt'] = basename($attr['src']);
36 
                } else {
37 
                    $attr['alt'] = $alt;
38 
                }
39 
            } else {
40 
                $attr['alt'] = $config->get('Attr.DefaultInvalidImageAlt');
41 
            }
42 
        }
43 
        return $attr;
44 
    }
45 
}
46 
 
47 
// vim: et sw=4 sts=4