calendar/view.php

   1 <?php // $Id$
   2
   3 /////////////////////////////////////////////////////////////////////////////
   4 //                                                                         //
   5 // NOTICE OF COPYRIGHT                                                     //
   6 //                                                                         //
   7 // Moodle - Calendar extension                                             //
   8 //                                                                         //
   9 // Copyright (C) 2003-2004  Greek School Network            www.sch.gr     //
  10 //                                                                         //
  11 // Designed by:                                                            //
  12 //     Avgoustos Tsinakos (tsinakos@teikav.edu.gr)                         //
  13 //     Jon Papaioannou (pj@moodle.org)                                     //
  14 //                                                                         //
  15 // Programming and development:                                            //
  16 //     Jon Papaioannou (pj@moodle.org)                                     //
  17 //                                                                         //
  18 // For bugs, suggestions, etc contact:                                     //
  19 //     Jon Papaioannou (pj@moodle.org)                                     //
  20 //                                                                         //
  21 // The current module was developed at the University of Macedonia         //
  22 // (www.uom.gr) under the funding of the Greek School Network (www.sch.gr) //
  23 // The aim of this project is to provide additional and improved           //
  24 // functionality to the Asynchronous Distance Education service that the   //
  25 // Greek School Network deploys.                                           //
  26 //                                                                         //
  27 // This program is free software; you can redistribute it and/or modify    //
  28 // it under the terms of the GNU General Public License as published by    //
  29 // the Free Software Foundation; either version 2 of the License, or       //
  30 // (at your option) any later version.                                     //
  31 //                                                                         //
  32 // This program is distributed in the hope that it will be useful,         //
  33 // but WITHOUT ANY WARRANTY; without even the implied warranty of          //
  34 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the           //
  35 // GNU General Public License for more details:                            //
  36 //                                                                         //
  37 //          http://www.gnu.org/copyleft/gpl.html                           //
  38 //                                                                         //
  39 /////////////////////////////////////////////////////////////////////////////
  40
  41 //  Display the calendar page.
  42
  43     require_once('../config.php');
  44     require_once($CFG->dirroot.'/course/lib.php');
  45     require_once($CFG->dirroot.'/calendar/lib.php');
  46
  47     $courseid = optional_param('course', 0, PARAM_INT);
  48     $view = optional_param('view', 'upcoming', PARAM_ALPHA);
  49     $day  = optional_param('cal_d', 0, PARAM_INT);
  50     $mon  = optional_param('cal_m', 0, PARAM_INT);
  51     $yr   = optional_param('cal_y', 0, PARAM_INT);
  52
  53     if(!$site = get_site()) {
  54         redirect($CFG->wwwroot.'/'.$CFG->admin.'/index.php');
  55     }
  56
  57     if ($courseid) {
  58         require_login($courseid);
  59     } else if ($CFG->forcelogin) {
  60         require_login();
  61     }
  62
  63     //add_to_log($course->id, "course", "view", "view.php?id=$course->id", "$course->id");
  64     $now = usergetdate(time());
  65     $pagetitle = '';
  66
  67     $nav = calendar_get_link_tag(get_string('calendar', 'calendar'), CALENDAR_URL.'view.php?view=upcoming&amp;', $now['mday'], $now['mon'], $now['year']);
  68
  69
  70     if(!checkdate($mon, $day, $yr)) {
  71         $day = intval($now['mday']);
  72         $mon = intval($now['mon']);
  73         $yr = intval($now['year']);
  74     }
  75     $time = make_timestamp($yr, $mon, $day);
  76
  77     switch($view) {
  78         case 'day':
  79             $nav .= ' -> '.userdate($time, get_string('strftimedate'));
  80             $pagetitle = get_string('dayview', 'calendar');
  81         break;
  82         case 'month':
  83             $nav .= ' -> '.userdate($time, get_string('strftimemonthyear'));
  84             $pagetitle = get_string('detailedmonthview', 'calendar');
  85         break;
  86         case 'upcoming':
  87             $pagetitle = get_string('upcomingevents', 'calendar');
  88         break;
  89     }
  90
  91     // If a course has been supplied in the URL, change the filters to show that one
  92     if (!empty($courseid)) {
  93         if ($course = get_record('course', 'id', $courseid)) {
  94             if ($course->id == SITEID) {
  95                 // If coming from the home page, show all courses
  96                 $SESSION->cal_courses_shown = calendar_get_default_courses(true);
  97                 calendar_set_referring_course(0);
  98
  99             } else {
 100                 // Otherwise show just this one
 101                 $SESSION->cal_courses_shown = $course->id;
 102                 calendar_set_referring_course($SESSION->cal_courses_shown);
 103             }
 104         }
 105     } else {
 106         $course = null;
 107     }
 108
 109     if (empty($USER->id) or isguest()) {
 110         $defaultcourses = calendar_get_default_courses();
 111         calendar_set_filters($courses, $groups, $users, $defaultcourses, $defaultcourses);
 112
 113     } else {
 114         calendar_set_filters($courses, $groups, $users);
 115     }
 116
 117     // Let's see if we are supposed to provide a referring course link
 118     // but NOT for the "main page" course
 119     if ($SESSION->cal_course_referer != SITEID &&
 120        ($shortname = get_field('course', 'shortname', 'id', $SESSION->cal_course_referer)) !== false) {
 121         // If we know about the referring course, show a return link and ALSO require login!
 122         require_login();
 123         $nav = '<a href="'.$CFG->wwwroot.'/course/view.php?id='.$SESSION->cal_course_referer.'">'.$shortname.'</a> -> '.$nav;
 124         if (empty($course)) {
 125             $course = get_record('course', 'id', $SESSION->cal_course_referer); // Useful to have around
 126         }
 127     }
 128
 129     $strcalendar = get_string('calendar', 'calendar');
 130     $prefsbutton = calendar_preferences_button();
 131
 132     // Print title and header
 133     print_header("$site->shortname: $strcalendar: $pagetitle", $strcalendar, $nav,
 134                  '', '', true, $prefsbutton, user_login_string($site));
 135
 136     echo calendar_overlib_html();
 137
 138     // Layout the whole page as three big columns.
 139     echo '<table id="calendar">';
 140     echo '<tr>';
 141
 142     // START: Main column
 143
 144     echo '<td class="maincalendar">';
 145
 146     switch($view) {
 147         case 'day':
 148             calendar_show_day($day, $mon, $yr, $courses, $groups, $users);
 149         break;
 150         case 'month':
 151             calendar_show_month_detailed($mon, $yr, $courses, $groups, $users);
 152         break;
 153         case 'upcoming':
 154             calendar_show_upcoming_events($courses, $groups, $users, get_user_preferences('calendar_lookahead', CALENDAR_UPCOMING_DAYS), get_user_preferences('calendar_maxevents', CALENDAR_UPCOMING_MAXEVENTS));
 155         break;
 156     }
 157
 158     echo '</td>';
 159
 160     // END: Main column
 161
 162     // START: Last column (3-month display)
 163     echo '<td class="sidecalendar">';
 164     echo '<div class="header">'.get_string('monthlyview', 'calendar').'</div>';
 165
 166     list($prevmon, $prevyr) = calendar_sub_month($mon, $yr);
 167     list($nextmon, $nextyr) = calendar_add_month($mon, $yr);
 168     $getvars = 'cal_d='.$day.'&amp;cal_m='.$mon.'&amp;cal_y='.$yr; // For filtering
 169
 170     echo '<div class="filters">';
 171     echo calendar_filter_controls($view, $getvars);
 172     echo '</div>';
 173
 174     echo '<div class="minicalendarblock">';
 175     echo calendar_top_controls('display', array('m' => $prevmon, 'y' => $prevyr));
 176     echo calendar_get_mini($courses, $groups, $users, $prevmon, $prevyr);
 177     echo '</div><div class="minicalendarblock">';
 178     echo calendar_top_controls('display', array('m' => $mon, 'y' => $yr));
 179     echo calendar_get_mini($courses, $groups, $users, $mon, $yr);
 180     echo '</div><div class="minicalendarblock">';
 181     echo calendar_top_controls('display', array('m' => $nextmon, 'y' => $nextyr));
 182     echo calendar_get_mini($courses, $groups, $users, $nextmon, $nextyr);
 183     echo '</div>';
 184
 185     echo '</td>';
 186
 187     echo '</tr></table>';
 188
 189     print_footer();
 190
 191
 192
 193 function calendar_show_day($d, $m, $y, $courses, $groups, $users) {
 194     global $CFG, $USER;
 195
 196     if (!checkdate($m, $d, $y)) {
 197         $now = usergetdate(time());
 198         list($d, $m, $y) = array(intval($now['mday']), intval($now['mon']), intval($now['year']));
 199     }
 200
 201     $getvars = 'from=day&amp;cal_d='.$d.'&amp;cal_m='.$m.'&amp;cal_y='.$y; // For filtering
 202
 203     $starttime = make_timestamp($y, $m, $d);
 204     $endtime   = make_timestamp($y, $m, $d + 1) - 1;
 205
 206     $events = calendar_get_upcoming($courses, $groups, $users, 1, 100, $starttime);
 207
 208     $text = '';
 209     if (!isguest() && !empty($USER->id)) {
 210         $text.= '<div class="buttons">';
 211         $text.= '<form action="'.CALENDAR_URL.'event.php" method="get">';
 212         $text.= '<input type="hidden" name="action" value="new" />';
 213         $text.= '<input type="hidden" name="cal_d" value="'.$d.'" />';
 214         $text.= '<input type="hidden" name="cal_m" value="'.$m.'" />';
 215         $text.= '<input type="hidden" name="cal_y" value="'.$y.'" />';
 216         $text.= '<input type="submit" value="'.get_string('newevent', 'calendar').'" />';
 217         $text.= '</form></div>';
 218     }
 219
 220     $text .= get_string('dayview', 'calendar').': '.calendar_course_filter_selector($getvars);
 221
 222     echo '<div class="header">'.$text.'</div>';
 223
 224     echo '<div class="controls">'.calendar_top_controls('day', array('d' => $d, 'm' => $m, 'y' => $y)).'</div>';
 225
 226     if (empty($events)) {
 227         // There is nothing to display today.
 228         echo '<h3>'.get_string('daywithnoevents', 'calendar').'</h3>';
 229
 230     } else {
 231
 232         echo '<div class="eventlist">';
 233
 234         $underway = array();
 235
 236         // First, print details about events that start today
 237         foreach ($events as $event) {
 238             if ($event->timestart >= $starttime && $event->timestart <= $endtime) {  // Print it now
 239
 240
 241 /*
 242                 $dayend = calendar_day_representation($event->timestart + $event->timeduration);
 243                 $timeend = calendar_time_representation($event->timestart + $event->timeduration);
 244                 $enddate = usergetdate($event->timestart + $event->timeduration);
 245                 // Set printable representation
 246                 echo calendar_get_link_tag($dayend, CALENDAR_URL.'view.php?view=day'.$morehref.'&amp;', $enddate['mday'], $enddate['mon'], $enddate['year']).' ('.$timeend.')';
 247 */
 248                 //unset($event->time);
 249                 $event->time = calendar_format_event_time($event, time(), '', false);
 250                 calendar_print_event($event);
 251
 252             } else {                                                                 // Save this for later
 253                 $underway[] = $event;
 254             }
 255         }
 256
 257         // Then, show a list of all events that just span this day
 258         if (!empty($underway)) {
 259             echo '<h3>'.get_string('spanningevents', 'calendar').':</h3>';
 260             foreach ($underway as $event) {
 261                 $event->time = calendar_format_event_time($event, time(), '', false);
 262                 calendar_print_event($event);
 263             }
 264         }
 265
 266         echo '</div>';
 267
 268     }
 269 }
 270
 271 function calendar_show_month_detailed($m, $y, $courses, $groups, $users) {
 272     global $CFG, $SESSION, $USER, $CALENDARDAYS;
 273     global $day, $mon, $yr;
 274
 275     $getvars = 'from=month&amp;cal_d='.$day.'&amp;cal_m='.$mon.'&amp;cal_y='.$yr; // For filtering
 276
 277     $display = &New stdClass;
 278     $display->minwday = get_user_preferences('calendar_startwday', CALENDAR_STARTING_WEEKDAY);
 279     $display->maxwday = $display->minwday + 6;
 280
 281     if(!empty($m) && !empty($y)) {
 282         $thisdate = usergetdate(time()); // Time and day at the user's location
 283         if($m == $thisdate['mon'] && $y == $thisdate['year']) {
 284             // Navigated to this month
 285             $date = $thisdate;
 286             $display->thismonth = true;
 287         }
 288         else {
 289             // Navigated to other month, let's do a nice trick and save us a lot of work...
 290             if(!checkdate($m, 1, $y)) {
 291                 $date = array('mday' => 1, 'mon' => $thisdate['mon'], 'year' => $thisdate['year']);
 292                 $display->thismonth = true;
 293             }
 294             else {
 295                 $date = array('mday' => 1, 'mon' => $m, 'year' => $y);
 296                 $display->thismonth = false;
 297             }
 298         }
 299     }
 300     else {
 301         $date = usergetdate(time());
 302         $display->thismonth = true;
 303     }
 304
 305     // Fill in the variables we 're going to use, nice and tidy
 306     list($d, $m, $y) = array($date['mday'], $date['mon'], $date['year']); // This is what we want to display
 307     $display->maxdays = calendar_days_in_month($m, $y);
 308
 309     if (get_user_timezone_offset() < 99) {
 310         // We 'll keep these values as GMT here, and offset them when the time comes to query the db
 311         $display->tstart = gmmktime(0, 0, 0, $m, 1, $y); // This is GMT
 312         $display->tend = gmmktime(23, 59, 59, $m, $display->maxdays, $y); // GMT
 313     } else {
 314         // no timezone info specified
 315         $display->tstart = mktime(0, 0, 0, $m, 1, $y);
 316         $display->tend = mktime(23, 59, 59, $m, $display->maxdays, $y);
 317     }
 318
 319     $startwday = gmdate('w', $display->tstart); // $display->tstart is already GMT, so don't use date(): messes with server's TZ
 320
 321     // Align the starting weekday to fall in our display range
 322     if($startwday < $display->minwday) {
 323         $startwday += 7;
 324     }
 325
 326     // Get events from database
 327     $whereclause = calendar_sql_where(usertime($display->tstart), usertime($display->tend), $users, $groups, $courses);
 328     if($whereclause === false) {
 329         $events = array();
 330     }
 331     else {
 332         $events = get_records_select('event', $whereclause, 'timestart');
 333     }
 334
 335     // Extract information: events vs. time
 336     calendar_events_by_day($events, $m, $y, $eventsbyday, $durationbyday, $typesbyday);
 337
 338     $text = '';
 339     if(!isguest() && !empty($USER->id)) {
 340         $text.= '<div class="buttons"><form action="'.CALENDAR_URL.'event.php" method="get">';
 341         $text.= '<input type="hidden" name="action" value="new" />';
 342         $text.= '<input type="hidden" name="cal_m" value="'.$m.'" />';
 343         $text.= '<input type="hidden" name="cal_y" value="'.$y.'" />';
 344         $text.= '<input type="submit" value="'.get_string('newevent', 'calendar').'" />';
 345         $text.= '</form></div>';
 346     }
 347
 348     $text .= get_string('detailedmonthview', 'calendar').': '.calendar_course_filter_selector($getvars);
 349
 350     echo '<div class="header">'.$text.'</div>';
 351
 352     echo '<div class="controls">';
 353     echo calendar_top_controls('month', array('m' => $m, 'y' => $y));
 354     echo '</div>';
 355
 356     // Start calendar display
 357     echo '<table class="calendarmonth"><tr class="weekdays">'; // Begin table. First row: day names
 358
 359     // Print out the names of the weekdays
 360     for($i = $display->minwday; $i <= $display->maxwday; ++$i) {
 361         // This uses the % operator to get the correct weekday no matter what shift we have
 362         // applied to the $display->minwday : $display->maxwday range from the default 0 : 6
 363         echo '<th>'.get_string($CALENDARDAYS[$i % 7], 'calendar').'</th>';
 364     }
 365
 366     echo '</tr><tr>'; // End of day names; prepare for day numbers
 367
 368     // For the table display. $week is the row; $dayweek is the column.
 369     $week = 1;
 370     $dayweek = $startwday;
 371
 372     // Paddding (the first week may have blank days in the beginning)
 373     for($i = $display->minwday; $i < $startwday; ++$i) {
 374         echo '<td>&nbsp;</td>'."\n";
 375     }
 376
 377     // Now display all the calendar
 378     for($day = 1; $day <= $display->maxdays; ++$day, ++$dayweek) {
 379         if($dayweek > $display->maxwday) {
 380             // We need to change week (table row)
 381             echo "</tr>\n<tr>";
 382             $dayweek = $display->minwday;
 383             ++$week;
 384         }
 385
 386         // Reset vars
 387         $cell = '';
 388         $dayhref = calendar_get_link_href(CALENDAR_URL.'view.php?view=day&amp;', $day, $m, $y);
 389
 390         if(CALENDAR_WEEKEND & (1 << ($dayweek % 7))) {
 391             // Weekend. This is true no matter what the exact range is.
 392             $class = 'weekend';
 393         }
 394         else {
 395             // Normal working day.
 396             $class = '';
 397         }
 398
 399         // Special visual fx if an event is defined
 400         if(isset($eventsbyday[$day])) {
 401             if(isset($typesbyday[$day]['startglobal'])) {
 402                 $class .= ' event_global';
 403             }
 404             else if(isset($typesbyday[$day]['startcourse'])) {
 405                 $class .= ' event_course';
 406             }
 407             else if(isset($typesbyday[$day]['startgroup'])) {
 408                 $class .= ' event_group';
 409             }
 410             else if(isset($typesbyday[$day]['startuser'])) {
 411                 $class .= ' event_user';
 412             }
 413             if(count($eventsbyday[$day]) == 1) {
 414                 $title = get_string('oneevent', 'calendar');
 415             }
 416             else {
 417                 $title = get_string('manyevents', 'calendar', count($eventsbyday[$day]));
 418             }
 419             $cell = '<div class="day"><a href="'.$dayhref.'" title="'.$title.'">'.$day.'</a></div>';
 420         }
 421         else {
 422             $cell = '<div class="day">'.$day.'</div>';
 423         }
 424
 425         // Special visual fx if an event spans many days
 426         if(isset($typesbyday[$day]['durationglobal'])) {
 427             $class .= ' duration_global';
 428         }
 429         else if(isset($typesbyday[$day]['durationcourse'])) {
 430             $class .= ' duration_course';
 431         }
 432         else if(isset($typesbyday[$day]['durationgroup'])) {
 433             $class .= ' duration_group';
 434         }
 435         else if(isset($typesbyday[$day]['durationuser'])) {
 436             $class .= ' duration_user';
 437         }
 438
 439         // Special visual fx for today
 440         if($display->thismonth && $day == $d) {
 441             $class .= ' today';
 442         }
 443
 444         // Just display it
 445         if(!empty($class)) {
 446             $class = ' class="'.trim($class).'"';
 447         }
 448         echo '<td'.$class.'>'.$cell;
 449
 450         if(isset($eventsbyday[$day])) {
 451             echo '<ul class="events-new">';
 452             foreach($eventsbyday[$day] as $eventindex) {
 453                 echo '<li><a href="'.$dayhref.'#event_'.$events[$eventindex]->id.'">'.format_string($events[$eventindex]->name, true).'</a></li>';
 454             }
 455             echo '</ul>';
 456         }
 457         if(isset($durationbyday[$day])) {
 458             echo '<ul class="events-underway">';
 459             foreach($durationbyday[$day] as $eventindex) {
 460                 echo '<li>['.format_string($events[$eventindex]->name,true).']</li>';
 461             }
 462             echo '</ul>';
 463         }
 464         echo "</td>\n";
 465     }
 466
 467     // Paddding (the last week may have blank days at the end)
 468     for($i = $dayweek; $i <= $display->maxwday; ++$i) {
 469         echo '<td>&nbsp;</td>';
 470     }
 471     echo "</tr>\n"; // Last row ends
 472
 473     echo "</table>\n"; // Tabular display of days ends
 474
 475     // OK, now for the filtering display
 476     echo '<div class="filters"><table><tr>';
 477
 478     // Global events
 479     if($SESSION->cal_show_global) {
 480         echo '<td class="event_global" style="width: 8px;"></td><td><strong>'.get_string('globalevents', 'calendar').':</strong> ';
 481         echo get_string('shown', 'calendar').' (<a href="'.CALENDAR_URL.'set.php?var=showglobal&amp;'.$getvars.'">'.get_string('clickhide', 'calendar').'</a>)</td>'."\n";
 482     }
 483     else {
 484         echo '<td style="width: 8px;"></td><td><strong>'.get_string('globalevents', 'calendar').':</strong> ';
 485         echo get_string('hidden', 'calendar').' (<a href="'.CALENDAR_URL.'set.php?var=showglobal&amp;'.$getvars.'">'.get_string('clickshow', 'calendar').'</a>)</td>'."\n";
 486     }
 487
 488     // Course events
 489     if(!empty($SESSION->cal_show_course)) {
 490         echo '<td class="event_course" style="width: 8px;"></td><td><strong>'.get_string('courseevents', 'calendar').':</strong> ';
 491         echo get_string('shown', 'calendar').' (<a href="'.CALENDAR_URL.'set.php?var=showcourses&amp;'.$getvars.'">'.get_string('clickhide', 'calendar').'</a>)</td>'."\n";
 492     }
 493     else {
 494         echo '<td style="width: 8px;"></td><td><strong>'.get_string('courseevents', 'calendar').':</strong> ';
 495         echo get_string('hidden', 'calendar').' (<a href="'.CALENDAR_URL.'set.php?var=showcourses&amp;'.$getvars.'">'.get_string('clickshow', 'calendar').'</a>)</td>'."\n";
 496     }
 497
 498     echo "</tr>\n";
 499
 500     if(!empty($USER->id) && !isguest()) {
 501         echo '<tr>';
 502         // Group events
 503         if($SESSION->cal_show_groups) {
 504             echo '<td class="event_group" style="width: 8px;"></td><td><strong>'.get_string('groupevents', 'calendar').':</strong> ';
 505             echo get_string('shown', 'calendar').' (<a href="'.CALENDAR_URL.'set.php?var=showgroups&amp;'.$getvars.'">'.get_string('clickhide', 'calendar').'</a>)</td>'."\n";
 506         }
 507         else {
 508             echo '<td style="width: 8px;"></td><td><strong>'.get_string('groupevents', 'calendar').':</strong> ';
 509             echo get_string('hidden', 'calendar').' (<a href="'.CALENDAR_URL.'set.php?var=showgroups&amp;'.$getvars.'">'.get_string('clickshow', 'calendar').'</a>)</td>'."\n";
 510         }
 511         // User events
 512         if($SESSION->cal_show_user) {
 513             echo '<td class="event_user" style="width: 8px;"></td><td><strong>'.get_string('userevents', 'calendar').':</strong> ';
 514             echo get_string('shown', 'calendar').' (<a href="'.CALENDAR_URL.'set.php?var=showuser&amp;'.$getvars.'">'.get_string('clickhide', 'calendar').'</a>)</td>'."\n";
 515         }
 516         else {
 517             echo '<td style="width: 8px;"></td><td><strong>'.get_string('userevents', 'calendar').':</strong> ';
 518             echo get_string('hidden', 'calendar').' (<a href="'.CALENDAR_URL.'set.php?var=showuser&amp;'.$getvars.'">'.get_string('clickshow', 'calendar').'</a>)</td>'."\n";
 519         }
 520         echo "</tr>\n";
 521     }
 522
 523     echo '</table></div>';
 524 }
 525
 526 function calendar_show_upcoming_events($courses, $groups, $users, $futuredays, $maxevents) {
 527     global $USER;
 528
 529     $events = calendar_get_upcoming($courses, $groups, $users, $futuredays, $maxevents);
 530
 531     $text = '';
 532
 533     if(!isguest() && !empty($USER->id)) {
 534         $text.= '<div class="buttons">';
 535         $text.= '<form action="'.CALENDAR_URL.'event.php" method="get">';
 536         $text.= '<input type="hidden" name="action" value="new" />';
 537         /*
 538         $text.= '<input type="hidden" name="cal_m" value="'.$m.'" />';
 539         $text.= '<input type="hidden" name="cal_y" value="'.$y.'" />';
 540         */
 541         $text.= '<input type="submit" value="'.get_string('newevent', 'calendar').'" />';
 542         $text.= '</form></div>';
 543     }
 544
 545     $text .= get_string('upcomingevents', 'calendar').': '.calendar_course_filter_selector('from=upcoming');
 546
 547     echo '<div class="header">'.$text.'</div>';
 548
 549     if ($events) {
 550         echo '<div class="eventlist">';
 551         foreach ($events as $event) {
 552             calendar_print_event($event);
 553         }
 554         echo '</div>';
 555     } else {
 556         print_heading(get_string('noupcomingevents', 'calendar'));
 557     }
 558 }
 559
 560 function calendar_course_filter_selector($getvars = '') {
 561     global $USER, $SESSION;
 562
 563     if (empty($USER->id) or isguest()) {
 564         return '';
 565     }
 566
 567     if (has_capability('moodle/calendar:manageentries', get_context_instance(CONTEXT_SYSTEM, SITEID)) && !empty($CFG->calendar_adminseesall)) {
 568         $courses = get_courses('all', 'c.shortname','c.id,c.shortname');
 569     } else {
 570         $courses = get_my_courses($USER->id, 'shortname');
 571     }
 572
 573     unset($courses[SITEID]);
 574
 575     $courseoptions[SITEID] = get_string('fulllistofcourses');
 576     foreach ($courses as $course) {
 577         $courseoptions[$course->id] = $course->shortname;
 578     }
 579
 580     if (is_numeric($SESSION->cal_courses_shown)) {
 581         $selected = $SESSION->cal_courses_shown;
 582     } else {
 583         $selected = '';
 584     }
 585
 586     return popup_form(CALENDAR_URL.'set.php?var=setcourse&amp;'.$getvars.'&amp;id=',
 587                        $courseoptions, 'cal_course_flt', $selected, '', '', '', true);
 588 }
 589
 590 ?>