calendar/renderer.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * This file contains the renderers for the calendar within Moodle
  20  *
  21  * @copyright 2010 Sam Hemelryk
  22  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  * @package calendar
  24  */
  25
  26 /**
  27  * The primary renderer for the calendar.
  28  */
  29 class core_calendar_renderer extends plugin_renderer_base {
  30
  31     /**
  32      * Creates a basic export form
  33      *
  34      * @param bool $allowthisweek
  35      * @param bool $allownextweek
  36      * @param bool $allownextmonth
  37      * @param int $userid
  38      * @param string $authtoken
  39      * @return string
  40      */
  41     public function basic_export_form($allowthisweek, $allownextweek, $allownextmonth, $userid, $authtoken) {
  42
  43         $output  = html_writer::tag('div', get_string('export', 'calendar'), array('class'=>'header'));
  44         $output .= html_writer::start_tag('fieldset');
  45         $output .= html_writer::tag('legend', get_string('commontasks', 'calendar'));
  46         $output .= html_writer::start_tag('form', array('action'=>new moodle_url('/calendar/export_execute.php'), 'method'=>'get'));
  47
  48         $output .= html_writer::tag('div', get_string('iwanttoexport', 'calendar'));
  49
  50         $output .= html_writer::start_tag('div', array('class'=>'indent'));
  51         $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_what', 'id'=>'pw_all', 'value'=>'all', 'checked'=>'checked'));
  52         $output .= html_writer::tag('label', get_string('eventsall', 'calendar'), array('for'=>'pw_all'));
  53         $output .= html_writer::empty_tag('br');
  54         $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_what', 'id'=>'pw_course', 'value'=>'courses'));
  55         $output .= html_writer::tag('label', get_string('eventsrelatedtocourses', 'calendar'), array('for'=>'pw_course'));
  56         $output .= html_writer::empty_tag('br');
  57         $output .= html_writer::end_tag('div');
  58
  59         $output .= html_writer::tag('div', get_string('for', 'calendar').':');
  60
  61         $output .= html_writer::start_tag('div', array('class'=>'indent'));
  62         if ($allowthisweek) {
  63             $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_wknow', 'value'=>'weeknow', 'checked'=>'checked'));
  64             $output .= html_writer::tag('label', get_string('weekthis', 'calendar'), array('for'=>'pt_wknow'));
  65             $output .= html_writer::empty_tag('br');
  66         }
  67         if ($allownextweek) {
  68             $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_wknext', 'value'=>'weeknext'));
  69             $output .= html_writer::tag('label', get_string('weeknext', 'calendar'), array('for'=>'pt_wknext'));
  70             $output .= html_writer::empty_tag('br');
  71         }
  72         $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_monnow', 'value'=>'monthnow'));
  73         $output .= html_writer::tag('label', get_string('monththis', 'calendar'), array('for'=>'pt_monnow'));
  74         $output .= html_writer::empty_tag('br');
  75         if ($allownextmonth) {
  76             $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_monnext', 'value'=>'monthnext'));
  77             $output .= html_writer::tag('label', get_string('monthnext', 'calendar'), array('for'=>'pt_monnext'));
  78             $output .= html_writer::empty_tag('br');
  79         }
  80         $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_recupc', 'value'=>'recentupcoming'));
  81         $output .= html_writer::tag('label', get_string('recentupcoming', 'calendar'), array('for'=>'pt_recupc'));
  82         $output .= html_writer::empty_tag('br');
  83         $output .= html_writer::end_tag('div');
  84
  85         $output .= html_writer::start_tag('div', array('class'=>'rightalign'));
  86         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_d', 'value'=>''));
  87         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_m', 'value'=>''));
  88         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_y', 'value'=>''));
  89         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'userid', 'value'=>$userid));
  90         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'authtoken', 'value'=>$authtoken));
  91
  92         $output .= html_writer::empty_tag('input', array('type'=>'submit', 'name' => 'generateurl', 'id'=>'generateurl', 'value'=>get_string('generateurlbutton', 'calendar')));
  93         $output .= html_writer::empty_tag('input', array('type'=>'submit', 'value'=>get_string('exportbutton', 'calendar')));
  94
  95         $output .= html_writer::end_tag('div');
  96
  97         $output .= html_writer::end_tag('form');
  98         $output .= html_writer::end_tag('fieldset');
  99
 100         $output .= html_writer::start_tag('div', array('id'=>'urlbox', 'style'=>'display:none;'));
 101         $output .= html_writer::tag('p', get_string('urlforical', 'calendar'));
 102         $output .= html_writer::tag('div', '', array('id'=>'url', 'style'=>'overflow:scroll;width:650px;'));
 103         $output .= html_writer::end_tag('div');
 104
 105         return $output;
 106     }
 107
 108     /**
 109      * Starts the standard layout for the page
 110      *
 111      * @return string
 112      */
 113     public function start_layout() {
 114         return html_writer::start_tag('div', array('class'=>'maincalendar'));
 115     }
 116
 117     /**
 118      * Creates the remainder of the layout
 119      *
 120      * @return string
 121      */
 122     public function complete_layout() {
 123         return html_writer::end_tag('div');
 124     }
 125
 126     /**
 127      * Produces the content for the filters block (pretend block)
 128      *
 129      * @param int $courseid
 130      * @param int $day
 131      * @param int $month
 132      * @param int $year
 133      * @param int $view
 134      * @param int $courses
 135      * @return string
 136      */
 137     public function fake_block_filters($courseid, $day, $month, $year, $view, $courses) {
 138         return html_writer::tag('div', calendar_filter_controls($this->page->url), array('class'=>'calendar_filters filters'));
 139     }
 140
 141     /**
 142      * Produces the content for the three months block (pretend block)
 143      *
 144      * This includes the previous month, the current month, and the next month
 145      *
 146      * @param calendar_information $calendar
 147      * @return string
 148      */
 149     public function fake_block_threemonths(calendar_information $calendar) {
 150
 151         list($prevmon, $prevyr) = calendar_sub_month($calendar->month, $calendar->year);
 152         list($nextmon, $nextyr) = calendar_add_month($calendar->month, $calendar->year);
 153
 154         $content  = html_writer::start_tag('div', array('class'=>'minicalendarblock'));
 155         $content .= calendar_top_controls('display', array('id' => $calendar->courseid, 'm' => $prevmon, 'y' => $prevyr));
 156         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, $prevmon, $prevyr);
 157         $content .= html_writer::end_tag('div');
 158         $content .= html_writer::start_tag('div', array('class'=>'minicalendarblock'));
 159         $content .= calendar_top_controls('display', array('id' => $calendar->courseid, 'm' => $calendar->month, 'y' => $calendar->year));
 160         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, $calendar->month, $calendar->year);
 161         $content .= html_writer::end_tag('div');
 162         $content .= html_writer::start_tag('div', array('class'=>'minicalendarblock'));
 163         $content .= calendar_top_controls('display', array('id' => $calendar->courseid, 'm' => $nextmon, 'y' => $nextyr));
 164         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, $nextmon, $nextyr);
 165         $content .= html_writer::end_tag('div');
 166         return $content;
 167     }
 168
 169     /**
 170      * Adds a pretent calendar block
 171      *
 172      * @param block_contents $bc
 173      * @param mixed $pos BLOCK_POS_RIGHT | BLOCK_POS_LEFT
 174      */
 175     public function add_pretend_calendar_block(block_contents $bc, $pos=BLOCK_POS_RIGHT) {
 176         $this->page->blocks->add_fake_block($bc, $pos);
 177     }
 178
 179     /**
 180      * Creates a button to add a new event
 181      *
 182      * @param int $courseid
 183      * @param int $day
 184      * @param int $month
 185      * @param int $year
 186      * @return string
 187      */
 188     protected function add_event_button($courseid, $day=null, $month=null, $year=null) {
 189         $output = html_writer::start_tag('div', array('class'=>'buttons'));
 190         $output .= html_writer::start_tag('form', array('action'=>CALENDAR_URL.'event.php', 'method'=>'get'));
 191         $output .= html_writer::start_tag('div');
 192         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'action', 'value'=>'new'));
 193         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'course', 'value'=>$courseid));
 194         if ($day !== null) {
 195             $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_d', 'value'=>$day));
 196         }
 197         if ($month !== null) {
 198             $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_m', 'value'=>$month));
 199         }
 200         if ($year !== null) {
 201             $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_y', 'value'=>$year));
 202         }
 203         $output .= html_writer::empty_tag('input', array('type'=>'submit', 'value'=>get_string('newevent', 'calendar')));
 204         $output .= html_writer::end_tag('div');
 205         $output .= html_writer::end_tag('form');
 206         $output .= html_writer::end_tag('div');
 207         return $output;
 208     }
 209
 210     /**
 211      * Displays the calendar for a single day
 212      *
 213      * @param calendar_information $calendar
 214      * @return string
 215      */
 216     public function show_day(calendar_information $calendar, moodle_url $returnurl = null) {
 217
 218         if ($returnurl === null) {
 219             $returnurl = $this->page->url;
 220         }
 221
 222         $calendar->checkdate();
 223         $events = calendar_get_upcoming($calendar->courses, $calendar->groups, $calendar->users, 1, 100, $calendar->timestamp_today());
 224
 225         $output  = html_writer::start_tag('div', array('class'=>'header'));
 226         if (calendar_user_can_add_event($calendar->course)) {
 227             $output .= $this->add_event_button($calendar->course->id, $calendar->day, $calendar->month, $calendar->year);
 228         }
 229         //$output .= html_writer::tag('label', get_string('dayview', 'calendar'), array('for'=>'cal_course_flt_jump'));
 230         $output .= $this->course_filter_selector($returnurl, get_string('dayview', 'calendar'));
 231         $output .= html_writer::end_tag('div');
 232         // Controls
 233         $output .= html_writer::tag('div', calendar_top_controls('day', array('id' => $calendar->courseid, 'd' => $calendar->day, 'm' => $calendar->month, 'y' => $calendar->year)), array('class'=>'controls'));
 234
 235         if (empty($events)) {
 236             // There is nothing to display today.
 237             $output .= $this->output->heading(get_string('daywithnoevents', 'calendar'), 3);
 238         } else {
 239             $output .= html_writer::start_tag('div', array('class'=>'eventlist'));
 240             $underway = array();
 241             // First, print details about events that start today
 242             foreach ($events as $event) {
 243                 $event = new calendar_event($event);
 244                 $event->calendarcourseid = $calendar->courseid;
 245                 if ($event->timestart >= $calendar->timestamp_today() && $event->timestart <= $calendar->timestamp_tomorrow()-1) {  // Print it now
 246                     $event->time = calendar_format_event_time($event, time(), null, false, $calendar->timestamp_today());
 247                     $output .= $this->event($event);
 248                 } else {                                                                 // Save this for later
 249                     $underway[] = $event;
 250                 }
 251             }
 252
 253             // Then, show a list of all events that just span this day
 254             if (!empty($underway)) {
 255                 $output .= $this->output->heading(get_string('spanningevents', 'calendar'), 3);
 256                 foreach ($underway as $event) {
 257                     $event->time = calendar_format_event_time($event, time(), null, false, $calendar->timestamp_today());
 258                     $output .= $this->event($event);
 259                 }
 260             }
 261
 262             $output .= html_writer::end_tag('div');
 263         }
 264
 265         return $output;
 266     }
 267
 268     /**
 269      * Displays an event
 270      *
 271      * @param calendar_event $event
 272      * @param bool $showactions
 273      * @return string
 274      */
 275     public function event(calendar_event $event, $showactions=true) {
 276         $event = calendar_add_event_metadata($event);
 277
 278         $anchor  = html_writer::tag('a', '', array('name'=>'event_'.$event->id));
 279
 280         $table = new html_table();
 281         $table->attributes = array('class'=>'event', 'cellspacing'=>'0');
 282         $table->data = array(
 283             0 => new html_table_row(),
 284             1 => new html_table_row(),
 285         );
 286
 287         if (!empty($event->icon)) {
 288             $table->data[0]->cells[0] = new html_table_cell($anchor.$event->icon);
 289         } else {
 290             $table->data[0]->cells[0] = new html_table_cell($anchor.$this->output->spacer(array('height'=>16, 'width'=>16, 'br'=>true)));
 291         }
 292         $table->data[0]->cells[0]->attributes['class'] .= ' picture';
 293
 294         $table->data[0]->cells[1] = new html_table_cell();
 295         $table->data[0]->cells[1]->attributes['class'] .= ' topic';
 296         if (!empty($event->referer)) {
 297             $table->data[0]->cells[1]->text .= html_writer::tag('div', $event->referer, array('class'=>'referer'));
 298         } else {
 299             $table->data[0]->cells[1]->text .= html_writer::tag('div', $event->name, array('class'=>'name'));
 300         }
 301         if (!empty($event->courselink)) {
 302             $table->data[0]->cells[1]->text .= html_writer::tag('div', $event->courselink, array('class'=>'course'));
 303         }
 304         if (!empty($event->time)) {
 305             $table->data[0]->cells[1]->text .= html_writer::tag('span', $event->time, array('class'=>'date'));
 306         } else {
 307             $table->data[0]->cells[1]->text .= html_writer::tag('span', calendar_time_representation($event->timestart), array('class'=>'date'));
 308         }
 309
 310         $table->data[1]->cells[0] = new html_table_cell('&nbsp;');
 311         $table->data[1]->cells[0]->attributes['class'] .= 'side';
 312
 313         $table->data[1]->cells[1] = new html_table_cell($event->description);
 314         $table->data[1]->cells[1]->attributes['class'] .= ' description';
 315         if (isset($event->cssclass)) {
 316             $table->data[1]->cells[1]->attributes['class'] .= ' '.$event->cssclass;
 317         }
 318
 319         if (calendar_edit_event_allowed($event) && $showactions) {
 320             if (empty($event->cmid)) {
 321                 $editlink = new moodle_url(CALENDAR_URL.'event.php', array('action'=>'edit', 'id'=>$event->id));
 322                 $deletelink = new moodle_url(CALENDAR_URL.'delete.php', array('id'=>$event->id));
 323                 if (!empty($event->calendarcourseid)) {
 324                     $editlink->param('course', $event->calendarcourseid);
 325                     $deletelink->param('course', $event->calendarcourseid);
 326                 }
 327             } else {
 328                 $editlink = new moodle_url('/course/mod.php', array('update'=>$event->cmid, 'return'=>true, 'sesskey'=>sesskey()));
 329                 $deletelink = null;
 330             }
 331
 332             $commands  = html_writer::start_tag('div', array('class'=>'commands'));
 333             $commands .= html_writer::start_tag('a', array('href'=>$editlink));
 334             $commands .= html_writer::empty_tag('img', array('src'=>$this->output->pix_url('t/edit'), 'alt'=>get_string('tt_editevent', 'calendar'), 'title'=>get_string('tt_editevent', 'calendar')));
 335             $commands .= html_writer::end_tag('a');
 336             if ($deletelink != null) {
 337                 $commands .= html_writer::start_tag('a', array('href'=>$deletelink));
 338                 $commands .= html_writer::empty_tag('img', array('src'=>$this->output->pix_url('t/delete'), 'alt'=>get_string('tt_deleteevent', 'calendar'), 'title'=>get_string('tt_deleteevent', 'calendar')));
 339                 $commands .= html_writer::end_tag('a');
 340             }
 341             $commands .= html_writer::end_tag('div');
 342             $table->data[1]->cells[1]->text .= $commands;
 343         }
 344         return html_writer::table($table);
 345     }
 346
 347     /**
 348      * Displays a month in detail
 349      *
 350      * @param calendar_information $calendar
 351      * @return string
 352      */
 353     public function show_month_detailed(calendar_information $calendar, moodle_url $returnurl  = null) {
 354         global $CFG;
 355
 356         if (empty($returnurl)) {
 357             $returnurl = $this->page->url;
 358         }
 359
 360         $date = usergetdate(time());
 361
 362         $display = new stdClass;
 363         $display->minwday = get_user_preferences('calendar_startwday', calendar_get_starting_weekday());
 364         $display->maxwday = $display->minwday + 6;
 365         $display->thismonth = ($date['mon'] == $calendar->month);
 366         $display->maxdays = calendar_days_in_month($calendar->month, $calendar->year);
 367
 368         $startwday = 0;
 369         if (get_user_timezone_offset() < 99) {
 370             // We 'll keep these values as GMT here, and offset them when the time comes to query the db
 371             $display->tstart = gmmktime(0, 0, 0, $calendar->month, 1, $calendar->year); // This is GMT
 372             $display->tend = gmmktime(23, 59, 59, $calendar->month, $display->maxdays, $calendar->year); // GMT
 373             $startwday = gmdate('w', $display->tstart); // $display->tstart is already GMT, so don't use date(): messes with server's TZ
 374         } else {
 375             // no timezone info specified
 376             $display->tstart = mktime(0, 0, 0, $calendar->month, 1, $calendar->year);
 377             $display->tend = mktime(23, 59, 59, $calendar->month, $display->maxdays, $calendar->year);
 378             $startwday = date('w', $display->tstart); // $display->tstart not necessarily GMT, so use date()
 379         }
 380
 381         // Align the starting weekday to fall in our display range
 382         if ($startwday < $display->minwday) {
 383             $startwday += 7;
 384         }
 385
 386         // Get events from database
 387         $events = calendar_get_events(usertime($display->tstart), usertime($display->tend), $calendar->users, $calendar->groups, $calendar->courses);
 388         if (!empty($events)) {
 389             foreach($events as $eventid => $event) {
 390                 $event = new calendar_event($event);
 391                 if (!empty($event->modulename)) {
 392                     $cm = get_coursemodule_from_instance($event->modulename, $event->instance);
 393                     if (!groups_course_module_visible($cm)) {
 394                         unset($events[$eventid]);
 395                     }
 396                 }
 397             }
 398         }
 399
 400         // Extract information: events vs. time
 401         calendar_events_by_day($events, $calendar->month, $calendar->year, $eventsbyday, $durationbyday, $typesbyday, $calendar->courses);
 402
 403         $output  = html_writer::start_tag('div', array('class'=>'header'));
 404         if (calendar_user_can_add_event($calendar->course)) {
 405             $output .= $this->add_event_button($calendar->course->id, null, $calendar->month, $calendar->year);
 406         }
 407         $output .= get_string('detailedmonthview', 'calendar').': '.$this->course_filter_selector($returnurl);
 408         $output .= html_writer::end_tag('div', array('class'=>'header'));
 409         // Controls
 410         $output .= html_writer::tag('div', calendar_top_controls('month', array('id' => $calendar->courseid, 'm' => $calendar->month, 'y' => $calendar->year)), array('class'=>'controls'));
 411
 412         $days = calendar_get_days();
 413
 414         $table = new html_table();
 415         $table->attributes = array('class'=>'calendarmonth calendartable');
 416         $time = make_timestamp($calendar->year, $calendar->month);
 417         $table->summary = get_string('calendarheading', 'calendar', userdate($time, get_string('strftimemonthyear')));
 418         $table->data = array();
 419
 420         $header = new html_table_row();
 421         $header->attributes = array('class'=>'weekdays');
 422         $header->cells = array();
 423         for($i = $display->minwday; $i <= $display->maxwday; ++$i) {
 424             // This uses the % operator to get the correct weekday no matter what shift we have
 425             // applied to the $display->minwday : $display->maxwday range from the default 0 : 6
 426             $cell = new html_table_cell(get_string($days[$i % 7], 'calendar'));
 427             $cell->header = true;
 428             $header->cells[] = $cell;
 429         }
 430
 431         // For the table display. $week is the row; $dayweek is the column.
 432         $week = 1;
 433         $dayweek = $startwday;
 434
 435         // Create an array of all the week days.
 436         $wdays = array(0 => '<strong>'. get_string('sunday', 'calendar'). '</strong>',
 437                        1 => '<strong>'. get_string('monday', 'calendar'). '</strong>',
 438                        2 => '<strong>'. get_string('tuesday', 'calendar'). '</strong>',
 439                        3 => '<strong>'. get_string('wednesday', 'calendar'). '</strong>',
 440                        4 => '<strong>'. get_string('thursday', 'calendar'). '</strong>',
 441                        5 => '<strong>'. get_string('friday', 'calendar'). '</strong>',
 442                        6 => '<strong>'. get_string('saturday', 'calendar'). '</strong>');
 443
 444         // Loop only if the day offset is greater than 0.
 445         // This loop involves shifting the days around until the desired start day
 446         // is at the start of the array.
 447         $daycount = 0;
 448         while ($display->minwday > $daycount++) {
 449             $wdays_end = array_shift($wdays);
 450             array_push($wdays, $wdays_end);
 451         }
 452
 453         // Now we set the (modified) array to the table header to be displayed.
 454         $table->head = $wdays;
 455
 456         $row = new html_table_row(array());
 457
 458         // Paddding (the first week may have blank days in the beginning)
 459         for($i = $display->minwday; $i < $startwday; ++$i) {
 460             $cell = new html_table_cell('&nbsp;');
 461             $cell->attributes = array('class'=>'nottoday');
 462             $row->cells[] = $cell;
 463         }
 464
 465         // Now display all the calendar
 466         $weekend = CALENDAR_DEFAULT_WEEKEND;
 467         if (isset($CFG->calendar_weekend)) {
 468             $weekend = intval($CFG->calendar_weekend);
 469         }
 470
 471         for ($calendar->day = 1; $calendar->day <= $display->maxdays; ++$calendar->day, ++$dayweek) {
 472             if($dayweek > $display->maxwday) {
 473                 // We need to change week (table row)
 474                 $table->data[] = $row;
 475                 $row = new html_table_row(array());
 476                 $dayweek = $display->minwday;
 477                 ++$week;
 478             }
 479
 480             // Reset vars
 481             $cell = new html_table_cell();
 482             $dayhref = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', array('view'=>'day', 'course'=>$calendar->courseid)), $calendar->day, $calendar->month, $calendar->year);
 483
 484             $cellclasses = array();
 485
 486             if ($weekend & (1 << ($dayweek % 7))) {
 487                 // Weekend. This is true no matter what the exact range is.
 488                 $cellclasses[] = 'weekend';
 489             }
 490
 491             // Special visual fx if an event is defined
 492             if (isset($eventsbyday[$calendar->day])) {
 493                 if(count($eventsbyday[$calendar->day]) == 1) {
 494                     $title = get_string('oneevent', 'calendar');
 495                 } else {
 496                     $title = get_string('manyevents', 'calendar', count($eventsbyday[$calendar->day]));
 497                 }
 498                 $cell->text = html_writer::tag('div', html_writer::link($dayhref, $calendar->day, array('title'=>$title)), array('class'=>'day'));
 499             } else {
 500                 $cell->text = html_writer::tag('div', $calendar->day, array('class'=>'day'));
 501             }
 502
 503             // Special visual fx if an event spans many days
 504             $durationclass = false;
 505             if (isset($typesbyday[$calendar->day]['durationglobal'])) {
 506                 $durationclass = 'duration_global';
 507             } else if (isset($typesbyday[$calendar->day]['durationcourse'])) {
 508                 $durationclass = 'duration_course';
 509             } else if (isset($typesbyday[$calendar->day]['durationgroup'])) {
 510                 $durationclass = 'duration_group';
 511             } else if (isset($typesbyday[$calendar->day]['durationuser'])) {
 512                 $durationclass = 'duration_user';
 513             }
 514             if ($durationclass) {
 515                 $cellclasses[] = 'duration';
 516                 $cellclasses[] = $durationclass;
 517             }
 518
 519             // Special visual fx for today
 520             if($display->thismonth && $calendar->day == $calendar->day) {
 521                 $cellclasses[] = 'today';
 522             } else {
 523                 $cellclasses[] = 'nottoday';
 524             }
 525             $cell->attributes = array('class'=>join(' ',$cellclasses));
 526
 527             if (isset($eventsbyday[$calendar->day])) {
 528                 $cell->text .= html_writer::start_tag('ul', array('class'=>'events-new'));
 529                 foreach($eventsbyday[$calendar->day] as $eventindex) {
 530                     // If event has a class set then add it to the event <li> tag
 531                     $attributes = array();
 532                     if (!empty($events[$eventindex]->class)) {
 533                         $attributes['class'] = $events[$eventindex]->class;
 534                     }
 535                     $dayhref->set_anchor('event_'.$events[$eventindex]->id);
 536                     $link = html_writer::link($dayhref, format_string($events[$eventindex]->name, true));
 537                     $cell->text .= html_writer::tag('li', $link, $attributes);
 538                 }
 539                 $cell->text .= html_writer::end_tag('ul');
 540             }
 541             if (isset($durationbyday[$calendar->day])) {
 542                 $cell->text .= html_writer::start_tag('ul', array('class'=>'events-underway'));
 543                 foreach($durationbyday[$calendar->day] as $eventindex) {
 544                     $cell->text .= html_writer::tag('li', '['.format_string($events[$eventindex]->name,true).']', array('class'=>'events-underway'));
 545                 }
 546                 $cell->text .= html_writer::end_tag('ul');
 547             }
 548             $row->cells[] = $cell;
 549         }
 550
 551         // Paddding (the last week may have blank days at the end)
 552         for($i = $dayweek; $i <= $display->maxwday; ++$i) {
 553             $cell = new html_table_cell('&nbsp;');
 554             $cell->attributes = array('class'=>'nottoday');
 555             $row->cells[] = $cell;
 556         }
 557         $table->data[] = $row;
 558         $output .= html_writer::table($table);
 559
 560         // OK, now for the filtering display
 561         $output .= $this->filter_selection_table($calendar);
 562         return $output;
 563     }
 564
 565     /**
 566      * Displays a filter selection table
 567      *
 568      * @param calendar_information $calendar
 569      * @return string
 570      */
 571     protected function filter_selection_table(calendar_information $calendar, moodle_url $returnurl = null) {
 572         global $SESSION;
 573
 574         if ($returnurl === null) {
 575             $returnurl = $this->page->url;
 576         }
 577
 578         $output  = html_writer::start_tag('div', array('class'=>'filters'));
 579         $output .= html_writer::start_tag('table');
 580         $output .= html_writer::start_tag('tr');
 581
 582         // Global events
 583         $link = new moodle_url(CALENDAR_URL.'set.php', array('var' => 'showglobal', 'return' => base64_encode($returnurl->out(false)), 'sesskey'=>sesskey()));
 584         $strglobalevents = get_string('globalevents', 'calendar');
 585         if (calendar_show_event_type(CALENDAR_EVENT_GLOBAL)) {
 586             $output .= html_writer::tag('td', '', array('class'=>'calendar_event_global', 'style'=>'width:8px;'));
 587             $output .= html_writer::tag('td', html_writer::tag('strong', $strglobalevents).' '.get_string('shown', 'calendar').' ('.html_writer::link($link, get_string('clickhide', 'calendar').'<span class="accesshide">'.$strglobalevents.'</span>').')');
 588         } else {
 589             $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 590             $output .= html_writer::tag('td', html_writer::tag('strong', $strglobalevents).' '.get_string('hidden', 'calendar').' ('.html_writer::link($link, get_string('clickshow', 'calendar').'<span class="accesshide">'.$strglobalevents.'</span>').')');
 591         }
 592
 593         // Course events
 594         $link = new moodle_url(CALENDAR_URL.'set.php', array('var'=>'showcourses', 'return' => base64_encode($returnurl->out(false)), 'sesskey'=>sesskey()));
 595         $strcourseevents = get_string('courseevents', 'calendar');
 596         if (calendar_show_event_type(CALENDAR_EVENT_COURSE)) {
 597             $output .= html_writer::tag('td', '', array('class'=>'calendar_event_course', 'style'=>'width:8px;'));
 598             $output .= html_writer::tag('td', html_writer::tag('strong', $strcourseevents).' '.get_string('shown', 'calendar').' ('.html_writer::link($link, get_string('clickhide', 'calendar').'<span class="accesshide">'.$strcourseevents.'</span>').')');
 599         } else {
 600             $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 601             $output .= html_writer::tag('td', html_writer::tag('strong', $strcourseevents).' '.get_string('hidden', 'calendar').' ('.html_writer::link($link, get_string('clickshow', 'calendar').'<span class="accesshide">'.$strcourseevents.'</span>').')');
 602         }
 603         $output .= html_writer::end_tag('tr');
 604
 605         if(isloggedin() && !isguestuser()) {
 606             $output .= html_writer::start_tag('tr');
 607             // Group events
 608             $link = new moodle_url(CALENDAR_URL.'set.php', array('var'=>'showgroups', 'return' => base64_encode($returnurl->out(false)), 'sesskey'=>sesskey()));
 609             $strgroupevents = get_string('groupevents', 'calendar');
 610             if (calendar_show_event_type(CALENDAR_EVENT_GROUP)) {
 611                 $output .= html_writer::tag('td', '', array('class'=>'calendar_event_group', 'style'=>'width:8px;'));
 612                 $output .= html_writer::tag('td', html_writer::tag('strong', $strgroupevents).' '.get_string('shown', 'calendar').' ('.html_writer::link($link, get_string('clickhide', 'calendar').'<span class="accesshide">'.$strgroupevents.'</span>').')');
 613             } else {
 614                 $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 615                 $output .= html_writer::tag('td', html_writer::tag('strong', $strgroupevents).' '.get_string('hidden', 'calendar').' ('.html_writer::link($link, get_string('clickshow', 'calendar').'<span class="accesshide">'.$strgroupevents.'</span>').')');
 616             }
 617             // User events
 618             $link = new moodle_url(CALENDAR_URL.'set.php', array('var'=>'showuser', 'return' => base64_encode($returnurl->out(false)), 'sesskey'=>sesskey()));
 619             $struserevents = get_string('userevents', 'calendar');
 620             if (calendar_show_event_type(CALENDAR_EVENT_USER)) {
 621                 $output .= html_writer::tag('td', '', array('class'=>'calendar_event_user', 'style'=>'width:8px;'));
 622                 $output .= html_writer::tag('td', html_writer::tag('strong', $struserevents).' '.get_string('shown', 'calendar').' ('.html_writer::link($link, get_string('clickhide', 'calendar').'<span class="accesshide">'.$struserevents.'</span>').')');
 623             } else {
 624                 $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 625                 $output .= html_writer::tag('td', html_writer::tag('strong', $struserevents).' '.get_string('hidden', 'calendar').' ('.html_writer::link($link, get_string('clickshow', 'calendar').'<span class="accesshide">'.$struserevents.'</span>').')');
 626             }
 627             $output .= html_writer::end_tag('tr');
 628         }
 629         $output .= html_writer::end_tag('table');
 630         $output .= html_writer::end_tag('div');
 631         return $output;
 632     }
 633
 634     /**
 635      * Displays upcoming events
 636      *
 637      * @param calendar_information $calendar
 638      * @param int $futuredays
 639      * @param int $maxevents
 640      * @return string
 641      */
 642     public function show_upcoming_events(calendar_information $calendar, $futuredays, $maxevents, moodle_url $returnurl = null) {
 643
 644         if ($returnurl === null) {
 645             $returnurl = $this->page->url;
 646         }
 647
 648         $events = calendar_get_upcoming($calendar->courses, $calendar->groups, $calendar->users, $futuredays, $maxevents);
 649
 650         $output  = html_writer::start_tag('div', array('class'=>'header'));
 651         if (calendar_user_can_add_event($calendar->course)) {
 652             $output .= $this->add_event_button($calendar->course->id);
 653         }
 654         $output .= html_writer::tag('label', get_string('upcomingevents', 'calendar'), array('for'=>'cal_course_flt_jump'));
 655         $output .= $this->course_filter_selector($returnurl);
 656         $output .= html_writer::end_tag('div');
 657
 658         if ($events) {
 659             $output .= html_writer::start_tag('div', array('class'=>'eventlist'));
 660             foreach ($events as $event) {
 661                 // Convert to calendar_event object so that we transform description
 662                 // accordingly
 663                 $event = new calendar_event($event);
 664                 $event->calendarcourseid = $calendar->courseid;
 665                 $output .= $this->event($event);
 666             }
 667             $output .= html_writer::end_tag('div');
 668         } else {
 669             $output .= $this->output->heading(get_string('noupcomingevents', 'calendar'));
 670         }
 671
 672         return $output;
 673     }
 674
 675     /**
 676      * Displays a course filter selector
 677      *
 678      * @param array $getvars
 679      * @return string
 680      */
 681     protected function course_filter_selector(moodle_url $returnurl, $label=null) {
 682         global $USER, $SESSION, $CFG;
 683
 684         if (!isloggedin() or isguestuser()) {
 685             return '';
 686         }
 687
 688         if (has_capability('moodle/calendar:manageentries', get_context_instance(CONTEXT_SYSTEM)) && !empty($CFG->calendar_adminseesall)) {
 689             $courses = get_courses('all', 'c.shortname','c.id,c.shortname');
 690         } else {
 691             $courses = enrol_get_my_courses();
 692         }
 693
 694         unset($courses[SITEID]);
 695
 696         $courseoptions = array();
 697         $courseoptions[SITEID] = get_string('fulllistofcourses');
 698         foreach ($courses as $course) {
 699             $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
 700             $courseoptions[$course->id] = format_string($course->shortname, true, array('context' => $coursecontext));
 701         }
 702
 703         if ($this->page->course->id !== SITEID) {
 704             $selected = $this->page->course->id;
 705         } else {
 706             $selected = '';
 707         }
 708         $select = new single_select(new moodle_url(CALENDAR_URL.'set.php', array('return' => base64_encode($returnurl->out(false)), 'var' => 'setcourse', 'sesskey'=>sesskey())), 'id', $courseoptions, $selected, null);
 709         $select->class = 'cal_courses_flt';
 710         if ($label !== null) {
 711             $select->label = $label;
 712         }
 713         return $this->output->render($select);
 714     }
 715 }