| 1 |
efrain |
1 |
<?php
|
|
|
2 |
// This file is part of Moodle - http://moodle.org/
|
|
|
3 |
//
|
|
|
4 |
// Moodle is free software: you can redistribute it and/or modify
|
|
|
5 |
// it under the terms of the GNU General Public License as published by
|
|
|
6 |
// the Free Software Foundation, either version 3 of the License, or
|
|
|
7 |
// (at your option) any later version.
|
|
|
8 |
//
|
|
|
9 |
// Moodle is distributed in the hope that it will be useful,
|
|
|
10 |
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
11 |
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
12 |
// GNU General Public License for more details.
|
|
|
13 |
//
|
|
|
14 |
// You should have received a copy of the GNU General Public License
|
|
|
15 |
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
|
|
|
16 |
|
|
|
17 |
namespace tool_brickfield\local\htmlchecker\common\checks;
|
|
|
18 |
|
|
|
19 |
use tool_brickfield\local\htmlchecker\common\brickfield_accessibility_test;
|
|
|
20 |
|
|
|
21 |
/**
|
|
|
22 |
* Brickfield accessibility HTML checker library.
|
|
|
23 |
*
|
|
|
24 |
* Alt text for all img elements used as source anchors is not empty when there is no other text in the anchor.
|
|
|
25 |
* img element cannot have alt attribute value of null or whitespace if the img element is contained by an
|
|
|
26 |
* a element and there is no other link text.
|
|
|
27 |
*
|
|
|
28 |
* @package tool_brickfield
|
|
|
29 |
* @copyright 2020 onward: Brickfield Education Labs, www.brickfield.ie
|
|
|
30 |
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
|
31 |
*/
|
|
|
32 |
class img_alt_not_empty_in_anchor extends brickfield_accessibility_test {
|
|
|
33 |
|
|
|
34 |
/** @var int The default severity code for this test. */
|
|
|
35 |
public $defaultseverity = \tool_brickfield\local\htmlchecker\brickfield_accessibility::BA_TEST_SEVERE;
|
|
|
36 |
|
|
|
37 |
/**
|
|
|
38 |
* The main check function. This is called by the parent class to actually check content
|
|
|
39 |
*/
|
|
|
40 |
public function check(): void {
|
|
|
41 |
foreach ($this->get_all_elements('a') as $a) {
|
|
|
42 |
if (!$a->nodeValue && $a->childNodes) {
|
|
|
43 |
foreach ($a->childNodes as $child) {
|
|
|
44 |
if ($this->property_is_equal($child, 'tagName', 'img')
|
|
|
45 |
&& trim($child->getAttribute('alt')) == '') {
|
|
|
46 |
$this->add_report($child);
|
|
|
47 |
}
|
|
|
48 |
}
|
|
|
49 |
}
|
|
|
50 |
}
|
|
|
51 |
}
|
|
|
52 |
}
|