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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   * The gradebook simple view - initial view to select your search options
  19   *
  20   * @package   gradereport_singleview
  21   * @copyright 2014 Moodle Pty Ltd (http://moodle.com)
  22   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  namespace gradereport_singleview\local\screen;
  26  
  27  use gradereport_singleview;
  28  use moodle_url;
  29  
  30  defined('MOODLE_INTERNAL') || die;
  31  
  32  /**
  33   * The gradebook simple view - initial view to select your search options
  34   *
  35   * @package   gradereport_singleview
  36   * @copyright 2014 Moodle Pty Ltd (http://moodle.com)
  37   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  38   */
  39  class select extends screen {
  40  
  41      /**
  42       * Initialise this screen
  43       *
  44       * @param bool $selfitemisempty Has an item been selected (will be false)
  45       */
  46      public function init($selfitemisempty = false) {
  47          global $DB;
  48  
  49          $roleids = explode(',', get_config('moodle', 'gradebookroles'));
  50  
  51          $this->items = get_role_users(
  52              $roleids, $this->context, false, '',
  53              'u.id, u.lastname, u.firstname', null, $this->groupid,
  54              $this->perpage * $this->page, $this->perpage
  55          );
  56          $this->item = $DB->get_record('course', array('id' => $this->courseid));
  57      }
  58  
  59      /**
  60       * Get the type of items on this screen, not valid so return false.
  61       *
  62       * @return bool
  63       */
  64      public function item_type() {
  65          return false;
  66      }
  67  
  68      /**
  69       * Return the HTML for the page.
  70       *
  71       * @return string
  72       */
  73      public function html() {
  74          global $OUTPUT;
  75  
  76          $html = '';
  77  
  78          $types = gradereport_singleview::valid_screens();
  79  
  80          foreach ($types as $type) {
  81              $classname = "gradereport_singleview\\local\\screen\\$type}";
  82  
  83              $screen = new $classname($this->courseid, null, $this->groupid);
  84  
  85              if (!$screen instanceof selectable_items) {
  86                  continue;
  87              }
  88  
  89              $options = $screen->options();
  90  
  91              if (empty($options)) {
  92                  continue;
  93              }
  94  
  95              $params = array(
  96                  'id' => $this->courseid,
  97                  'item' => $screen->item_type(),
  98                  'group' => $this->groupid
  99              );
 100  
 101              $url = new moodle_url('/grade/report/singleview/index.php', $params);
 102  
 103              $select = new \single_select($url, 'itemid', $options);
 104              $select->set_label($screen->description());
 105              $html .= $OUTPUT->render($select);
 106          }
 107  
 108          if (empty($html)) {
 109              $OUTPUT->notification(get_string('noscreens', 'gradereport_singleview'));
 110          }
 111  
 112          return $html;
 113      }
 114  
 115      /**
 116       * Should we show the next prev selector?
 117       * @return bool
 118       */
 119      public function supports_next_prev() {
 120          return false;
 121      }
 122  }