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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;
  18  
  19  /**
  20   * Helper base class to check that input tags have an appropriate tab order
  21   *
  22   * @package    tool_brickfield
  23   * @copyright  2020 onward: Brickfield Education Labs, www.brickfield.ie
  24   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  25   */
  26  class input_tab_index extends brickfield_accessibility_test {
  27      /** @var string The tag name that this test applies to */
  28      public $tag;
  29  
  30      /** @var string The type of input tag this is */
  31      public $type;
  32  
  33      /** @var bool Wehether or not we should check the type attribute of the input tags */
  34      public $notype = false;
  35  
  36      /** Iterate through all the input items and make sure the tabindex exists and is numeric. */
  37      public function check() {
  38          foreach ($this->get_all_elements($this->tag) as $element) {
  39              if (($element->getAttribute('type') == $this->type)
  40                  && (!($element->hasAttribute('tabindex'))
  41                      || !is_numeric($element->getAttribute('tabindex')))) {
  42                  $this->add_report($element);
  43              }
  44          }
  45      }
  46  }