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Differences Between: [Versions 310 and 311] [Versions 310 and 400] [Versions 310 and 401] [Versions 310 and 402] [Versions 310 and 403] [Versions 39 and 310]

   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   * Allows the user to manage calendar subscriptions.
  19   *
  20   * @copyright 2012 Jonathan Harker
  21   * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  22   * @package calendar
  23   */
  24  namespace core_calendar\local\event\forms;
  25  
  26  defined('MOODLE_INTERNAL') || die();
  27  
  28  require_once($CFG->libdir . '/formslib.php');
  29  
  30  /**
  31   * Form for adding a subscription to a Moodle course calendar.
  32   * @copyright 2012 Jonathan Harker
  33   * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  34   */
  35  class managesubscriptions extends \moodleform {
  36  
  37      use eventtype;
  38  
  39      /**
  40       * Defines the form used to add calendar subscriptions.
  41       */
  42      public function definition() {
  43          global $PAGE;
  44          $mform = $this->_form;
  45          $eventtypes = calendar_get_allowed_event_types();
  46          if (in_array(true, $eventtypes, true) === false) {
  47              print_error('nopermissiontoupdatecalendar');
  48          }
  49  
  50          $mform->addElement('header', 'addsubscriptionform', get_string('importcalendarheading', 'calendar'));
  51  
  52          // Name.
  53          $mform->addElement('text', 'name', get_string('subscriptionname', 'calendar'), array('maxsize' => '255', 'size' => '40'));
  54          $mform->addRule('name', get_string('required'), 'required');
  55          $mform->setType('name', PARAM_TEXT);
  56  
  57          // Import from (url | importfile).
  58          $mform->addElement('html', get_string('importfrominstructions', 'calendar'));
  59          $choices = array(CALENDAR_IMPORT_FROM_FILE => get_string('importfromfile', 'calendar'),
  60              CALENDAR_IMPORT_FROM_URL  => get_string('importfromurl',  'calendar'));
  61          $mform->addElement('select', 'importfrom', get_string('importcalendarfrom', 'calendar'), $choices);
  62          $mform->setDefault('importfrom', CALENDAR_IMPORT_FROM_URL);
  63  
  64          // URL.
  65          $mform->addElement('text', 'url', get_string('importfromurl', 'calendar'), array('maxsize' => '255', 'size' => '50'));
  66          // Cannot set as PARAM_URL since we need to allow webcal:// protocol.
  67          $mform->setType('url', PARAM_RAW);
  68          $mform->setForceLtr('url');
  69  
  70          // Poll interval
  71          $choices = calendar_get_pollinterval_choices();
  72          $mform->addElement('select', 'pollinterval', get_string('pollinterval', 'calendar'), $choices);
  73          $mform->setDefault('pollinterval', 604800);
  74          $mform->addHelpButton('pollinterval', 'pollinterval', 'calendar');
  75          $mform->setType('pollinterval', PARAM_INT);
  76  
  77          // Import file
  78          $mform->addElement('filepicker', 'importfile', get_string('importfromfile', 'calendar'), null, array('accepted_types' => '.ics'));
  79  
  80          // Disable appropriate elements depending on import from value.
  81          $mform->hideIf('pollinterval', 'importfrom', 'eq', CALENDAR_IMPORT_FROM_FILE);
  82          $mform->hideIf('url',  'importfrom', 'eq', CALENDAR_IMPORT_FROM_FILE);
  83          $mform->hideIf('importfile', 'importfrom', 'eq', CALENDAR_IMPORT_FROM_URL);
  84  
  85          // Add the select elements for the available event types.
  86          $this->add_event_type_elements($mform, $eventtypes);
  87  
  88          // Eventtype: 0 = user, 1 = site, anything else = course ID.
  89          $mform->addElement('submit', 'add', get_string('add'));
  90  
  91          // Add the javascript required to enhance this mform.
  92          $PAGE->requires->js_call_amd('core_calendar/event_form', 'init', [$mform->getAttribute('id')]);
  93      }
  94  
  95      /**
  96       * Validates the returned data.
  97       *
  98       * @param array $data
  99       * @param array $files
 100       * @return array
 101       */
 102      public function validation($data, $files) {
 103          global $USER;
 104  
 105          $errors = parent::validation($data, $files);
 106  
 107          $eventtype = isset($data['eventtype']) ? $data['eventtype'] : null;
 108          $coursekey = ($eventtype == 'group') ? 'groupcourseid' : 'courseid';
 109          $courseid = (!empty($data[$coursekey])) ? $data[$coursekey] : null;
 110          $eventtypes = calendar_get_allowed_event_types($courseid);
 111  
 112          if (empty($eventtype) || !isset($eventtypes[$eventtype])) {
 113              $errors['eventtype'] = get_string('invalideventtype', 'calendar');
 114          }
 115  
 116          if ($data['importfrom'] == CALENDAR_IMPORT_FROM_FILE) {
 117              if (empty($data['importfile'])) {
 118                  $errors['importfile'] = get_string('errorrequiredurlorfile', 'calendar');
 119              } else {
 120                  // Make sure the file area is not empty and contains only one file.
 121                  $draftitemid = $data['importfile'];
 122                  $fs = get_file_storage();
 123                  $usercontext = \context_user::instance($USER->id);
 124                  $files = $fs->get_area_files($usercontext->id, 'user', 'draft', $draftitemid, 'id DESC', false);
 125                  if (count($files) !== 1) {
 126                      $errors['importfile'] = get_string('errorrequiredurlorfile', 'calendar');
 127                  }
 128              }
 129          } else if (($data['importfrom'] == CALENDAR_IMPORT_FROM_URL)) {
 130              // Clean input calendar url.
 131              $url = clean_param($data['url'], PARAM_URL);
 132              try {
 133                  calendar_get_icalendar($url);
 134              } catch (\moodle_exception $e) {
 135                  $errors['url']  = get_string('errorinvalidicalurl', 'calendar');
 136              }
 137          } else {
 138              // Shouldn't happen.
 139              $errors['url'] = get_string('errorrequiredurlorfile', 'calendar');
 140          }
 141  
 142          return $errors;
 143      }
 144  
 145      public function definition_after_data() {
 146          $mform =& $this->_form;
 147  
 148          $mform->applyFilter('url', static::class . '::strip_webcal');
 149          $mform->applyFilter('url', 'trim');
 150      }
 151  
 152      /**
 153       * Replace webcal:// urls with http:// as
 154       * curl does not understand this protocol
 155       *
 156       * @param string @url url to examine
 157       * @return string url with webcal:// replaced
 158       */
 159      public static function strip_webcal($url) {
 160          if (strpos($url, 'webcal://') === 0) {
 161              $url = str_replace('webcal://', 'http://', $url);
 162          }
 163          return $url;
 164      }
 165  }