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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 * Each source anchor contains text. 25 * a (anchor) element must contain text. The text may occur in the anchor text or in the title attribute of the anchor 26 * or in the Alt text of an image used within the anchor. 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 a_must_contain_text extends brickfield_accessibility_test { 33 /** @var int The default severity code for this test. */ 34 public $defaultseverity = \tool_brickfield\local\htmlchecker\brickfield_accessibility::BA_TEST_SEVERE; 35 36 /** 37 * The main check function. This is called by the parent class to actually check content. 38 */ 39 public function check(): void { 40 foreach ($this->get_all_elements('a') as $a) { 41 if (!$this->element_contains_readable_text($a) && ($a->hasAttribute('href'))) { 42 $this->add_report($a); 43 } 44 } 45 } 46 47 /** 48 * Returns if a link is not a candidate to be an anchor (which does 49 * not need text). 50 * @param \DOMElement $a 51 * @return bool Whether is is a link (TRUE) or an anchor (FALSE) 52 */ 53 public function is_not_anchor(\DOMElement $a): bool { 54 return (!($a->hasAttribute('name') && !$a->hasAttribute('href'))); 55 } 56 }
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