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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 * Image Alt text is long. 25 * Image Alt text is long or user must confirm that Alt text is as short as possible. 26 * 27 * @package tool_brickfield 28 * @copyright 2020 onward: Brickfield Education Labs, www.brickfield.ie 29 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 30 */ 31 class img_alt_is_too_long extends brickfield_accessibility_test { 32 33 /** @var int The default severity code for this test. */ 34 public $defaultseverity = \tool_brickfield\local\htmlchecker\brickfield_accessibility::BA_TEST_SEVERE; 35 36 /** 37 * The main check function. This is called by the parent class to actually check content. 38 */ 39 public function check(): void { 40 global $alttextlengthlimit; 41 42 foreach ($this->get_all_elements('img') as $img) { 43 $alttextlengthlimit = 125; 44 if ($img->hasAttribute('alt') && strlen($img->getAttribute('alt')) > $alttextlengthlimit) { 45 $this->add_report($img); 46 } 47 } 48 } 49 }
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