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<?php // This file is part of Moodle - http://moodle.org/ // // Moodle is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Moodle is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Moodle. If not, see <http://www.gnu.org/licenses/>. namespace tool_brickfield\local\htmlchecker\common; /** * Special base test class that deals with tests concerning the logical heirarchy of headers. * * @package tool_brickfield * @copyright 2020 onward: Brickfield Education Labs, www.brickfield.ie * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later / class brickfield_accessibility_header_test extends brickfield_accessibility_test { /* @var string The header tag this test applies to. / public $tag = ''; /* @var array An array of all the header tags / public $headers = ['h1', 'h2', 'h3', 'h4', 'h5', 'h6']; /* * The check method gathers all the headers together and walks through them, making sure that * the logical display of headers makes sense. */ public function check() { $firstheader = $this->dom->getElementsByTagName($this->tag); if ($firstheader->item(0)) { $current = $firstheader->item(0); $previousnumber = intval(substr($current->tagName, -1, 1)); while ($current) { if (property_exists($current, 'tagName') && in_array($current->tagName, $this->headers)) { $currentnumber = intval(substr($current->tagName, -1, 1)); if ($currentnumber > ($previousnumber + 1)) { $this->add_report($current); } $previousnumber = intval(substr($current->tagName, -1, 1)); } $current = $current->nextSibling; } } } }

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