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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  /**
  18   * Form for usage page to select number of samples.
  19   *
  20   * @package core_cache
  21   * @copyright 2021 The Open University
  22   * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  namespace core_cache\output;
  26  
  27  defined('MOODLE_INTERNAL') || die();
  28  
  29  require_once($CFG->libdir . '/formslib.php');
  30  
  31  /**
  32   * Form for usage page to select number of samples.
  33   *
  34   * @package core_cache
  35   */
  36  class usage_samples_form extends \moodleform {
  37      /**
  38       * Constructor sets form up to use GET request to current page.
  39       */
  40      public function __construct() {
  41          parent::__construct(null, null, 'get');
  42      }
  43  
  44      /**
  45       * Adds controls to form.
  46       */
  47      protected function definition() {
  48          $mform = $this->_form;
  49  
  50          $radioarray = [];
  51          foreach ([50, 100, 200, 500, 1000] as $samples) {
  52              $radioarray[] = $mform->createElement('radio', 'samples', '', $samples, $samples);
  53          }
  54          $mform->setDefault('samples', 50);
  55          $mform->addGroup($radioarray, 'samplesradios', get_string('usage_samples', 'cache'), [' '], false);
  56          $mform->addElement('submit', 'submit', get_string('update'));
  57      }
  58  }