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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   * Handles displaying the calendar upcoming events block.
  19   *
  20   * @package    block_calendar_upcoming
  21   * @copyright  2004 Eloy Lafuente (stronk7) {@link http://stronk7.com}
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  class block_calendar_upcoming extends block_base {
  25  
  26      /**
  27       * Initialise the block.
  28       */
  29      public function init() {
  30          $this->title = get_string('pluginname', 'block_calendar_upcoming');
  31      }
  32  
  33      /**
  34       * Return the content of this block.
  35       *
  36       * @return stdClass the content
  37       */
  38      public function get_content() {
  39          global $CFG;
  40  
  41          require_once($CFG->dirroot.'/calendar/lib.php');
  42  
  43          if ($this->content !== null) {
  44              return $this->content;
  45          }
  46          $this->content = new stdClass;
  47          $this->content->text = '';
  48  
  49          $filtercourse    = array();
  50          if (empty($this->instance)) { // Overrides: use no course at all.
  51              $courseshown = false;
  52              $this->content->footer = '';
  53  
  54          } else {
  55              $courseshown = $this->page->course->id;
  56              $this->content->footer = '<div class="gotocal"><a href="'.$CFG->wwwroot.
  57                                       '/calendar/view.php?view=upcoming&amp;course='.$courseshown.'">'.
  58                                        get_string('gotocalendar', 'calendar').'</a>...</div>';
  59              $context = context_course::instance($courseshown);
  60              if (has_any_capability(array('moodle/calendar:manageentries', 'moodle/calendar:manageownentries'), $context)) {
  61                  $this->content->footer .= '<div class="newevent"><a href="'.$CFG->wwwroot.
  62                                            '/calendar/event.php?action=new&amp;course='.$courseshown.'">'.
  63                                             get_string('newevent', 'calendar').'</a>...</div>';
  64              }
  65              if ($courseshown == SITEID) {
  66                  // Being displayed at site level. This will cause the filter to fall back to auto-detecting
  67                  // the list of courses it will be grabbing events from.
  68                  $filtercourse = calendar_get_default_courses();
  69              } else {
  70                  // Forcibly filter events to include only those from the particular course we are in.
  71                  $filtercourse = array($courseshown => $this->page->course);
  72              }
  73          }
  74  
  75          list($courses, $group, $user) = calendar_set_filters($filtercourse);
  76  
  77          $defaultlookahead = CALENDAR_DEFAULT_UPCOMING_LOOKAHEAD;
  78          if (isset($CFG->calendar_lookahead)) {
  79              $defaultlookahead = intval($CFG->calendar_lookahead);
  80          }
  81          $lookahead = get_user_preferences('calendar_lookahead', $defaultlookahead);
  82  
  83          $defaultmaxevents = CALENDAR_DEFAULT_UPCOMING_MAXEVENTS;
  84          if (isset($CFG->calendar_maxevents)) {
  85              $defaultmaxevents = intval($CFG->calendar_maxevents);
  86          }
  87          $maxevents = get_user_preferences('calendar_maxevents', $defaultmaxevents);
  88          $events = calendar_get_upcoming($courses, $group, $user, $lookahead, $maxevents);
  89  
  90          if (!empty($this->instance)) {
  91              $link = 'view.php?view=day&amp;course='.$courseshown.'&amp;';
  92              $showcourselink = ($this->page->course->id == SITEID);
  93              $this->content->text = calendar_get_block_upcoming($events, $link, $showcourselink);
  94          }
  95  
  96          if (empty($this->content->text)) {
  97              $this->content->text = '<div class="post">'. get_string('noupcomingevents', 'calendar').'</div>';
  98          }
  99  
 100          return $this->content;
 101      }
 102  }
 103  
 104