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<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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namespace tool_brickfield\local\htmlchecker\common\checks;
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use tool_brickfield\local\htmlchecker\common\brickfield_accessibility_test;
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/**
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* Brickfield accessibility HTML checker library.
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*
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* Anchor should not open new window without warning.
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* a (anchor) element must not contain a target attribute unless the target attribute value is either _self, _top, or _parent.
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*
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* @package tool_brickfield
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* @copyright 2020 onward: Brickfield Education Labs, www.brickfield.ie
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class a_links_dont_open_new_window extends brickfield_accessibility_test {
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/** @var int $defaultseverity The default severity code for this test. */
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public $defaultseverity = \tool_brickfield\local\htmlchecker\brickfield_accessibility::BA_TEST_SEVERE;
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/** @var string[] A list of targets allowed that don't open a new window. */
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public $allowedtargets = array('_self', '_parent', '_top', '');
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/**
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* The main check function. This is called by the parent class to actually check content.
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*/
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public function check(): void {
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// Need to process all enabled lang versions of newwindowphrases.
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$text = brickfield_accessibility_test::get_all_newwindowphrases();
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foreach ($this->get_all_elements('a') as $a) {
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if ($a->hasAttribute('target') && !in_array($a->getAttribute('target'), $this->allowedtargets)) {
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$phrasefound = false;
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foreach ($text as $phrase) {
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// Sanity check for readable text.
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if (!brickfield_accessibility_test::is_text_readable($phrase)) {
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break;
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}
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$pos = stripos($a->nodeValue, $phrase);
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if ($pos !== false) {
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$phrasefound = true;
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break;
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}
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}
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if (!$phrasefound) {
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$this->add_report($a);
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}
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}
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}
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}
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}
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