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 string $username
  38      * @param string $authtoken
  39      * @return string
  40      */
  41     public function basic_export_form($allowthisweek, $allownextweek, $allownextmonth, $username, $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         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'username', 'value'=>$username));
  90         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'authtoken', 'value'=>$authtoken));
  91
  92         $output .= html_writer::empty_tag('input', array('type'=>'button', '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         $this->page->requires->yui_module('moodle-calendar-eventmanager', 'M.core_calendar.init_basic_export', array($allowthisweek, $allownextweek, $allownextmonth, $username, $authtoken));
 106
 107         return $output;
 108     }
 109
 110     /**
 111      * Starts the standard layout for the page
 112      *
 113      * @return string
 114      */
 115     public function start_layout() {
 116         return html_writer::start_tag('div', array('class'=>'maincalendar'));
 117     }
 118
 119     /**
 120      * Creates the remainder of the layout
 121      *
 122      * @return string
 123      */
 124     public function complete_layout() {
 125         return html_writer::end_tag('div');
 126     }
 127
 128     /**
 129      * Produces the content for the filters block (pretend block)
 130      *
 131      * @param int $courseid
 132      * @param int $day
 133      * @param int $month
 134      * @param int $year
 135      * @param int $view
 136      * @param int $courses
 137      * @return string
 138      */
 139     public function fake_block_filters($courseid, $day, $month, $year, $view, $courses) {
 140         return html_writer::tag('div', calendar_filter_controls($this->page->url), array('class'=>'calendar_filters filters'));
 141     }
 142
 143     /**
 144      * Produces the content for the three months block (pretend block)
 145      *
 146      * This includes the previous month, the current month, and the next month
 147      *
 148      * @param calendar_information $calendar
 149      * @return string
 150      */
 151     public function fake_block_threemonths(calendar_information $calendar) {
 152
 153         list($prevmon, $prevyr) = calendar_sub_month($calendar->month, $calendar->year);
 154         list($nextmon, $nextyr) = calendar_add_month($calendar->month, $calendar->year);
 155
 156         $content  = html_writer::start_tag('div', array('class'=>'minicalendarblock'));
 157         $content .= calendar_top_controls('display', array('id' => $calendar->courseid, 'm' => $prevmon, 'y' => $prevyr));
 158         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, $prevmon, $prevyr);
 159         $content .= html_writer::end_tag('div');
 160         $content .= html_writer::start_tag('div', array('class'=>'minicalendarblock'));
 161         $content .= calendar_top_controls('display', array('id' => $calendar->courseid, 'm' => $calendar->month, 'y' => $calendar->year));
 162         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, $calendar->month, $calendar->year);
 163         $content .= html_writer::end_tag('div');
 164         $content .= html_writer::start_tag('div', array('class'=>'minicalendarblock'));
 165         $content .= calendar_top_controls('display', array('id' => $calendar->courseid, 'm' => $nextmon, 'y' => $nextyr));
 166         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, $nextmon, $nextyr);
 167         $content .= html_writer::end_tag('div');
 168         return $content;
 169     }
 170
 171     /**
 172      * Adds a pretent calendar block
 173      *
 174      * @param block_contents $bc
 175      * @param mixed $pos BLOCK_POS_RIGHT | BLOCK_POS_LEFT
 176      */
 177     public function add_pretend_calendar_block(block_contents $bc, $pos=BLOCK_POS_RIGHT) {
 178         $this->page->blocks->add_fake_block($bc, $pos);
 179     }
 180
 181     /**
 182      * Creates a button to add a new event
 183      *
 184      * @param int $courseid
 185      * @param int $day
 186      * @param int $month
 187      * @param int $year
 188      * @return string
 189      */
 190     protected function add_event_button($courseid, $day=null, $month=null, $year=null) {
 191         $output = html_writer::start_tag('div', array('class'=>'buttons'));
 192         $output .= html_writer::start_tag('form', array('action'=>CALENDAR_URL.'event.php', 'method'=>'get'));
 193         $output .= html_writer::start_tag('div');
 194         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'action', 'value'=>'new'));
 195         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'course', 'value'=>$courseid));
 196         if ($day !== null) {
 197             $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_d', 'value'=>$day));
 198         }
 199         if ($month !== null) {
 200             $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_m', 'value'=>$month));
 201         }
 202         if ($year !== null) {
 203             $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_y', 'value'=>$year));
 204         }
 205         $output .= html_writer::empty_tag('input', array('type'=>'submit', 'value'=>get_string('newevent', 'calendar')));
 206         $output .= html_writer::end_tag('div');
 207         $output .= html_writer::end_tag('form');
 208         $output .= html_writer::end_tag('div');
 209         return $output;
 210     }
 211
 212     /**
 213      * Displays the calendar for a single day
 214      *
 215      * @param calendar_information $calendar
 216      * @return string
 217      */
 218     public function show_day(calendar_information $calendar, moodle_url $returnurl = null) {
 219
 220         if ($returnurl === null) {
 221             $returnurl = $this->page->url;
 222         }
 223
 224         $calendar->checkdate();
 225         $events = calendar_get_upcoming($calendar->courses, $calendar->groups, $calendar->users, 1, 100, $calendar->timestamp_today());
 226
 227         $output  = html_writer::start_tag('div', array('class'=>'header'));
 228         if (calendar_user_can_add_event($calendar->course)) {
 229             $output .= $this->add_event_button($calendar->course->id, $calendar->day, $calendar->month, $calendar->year);
 230         }
 231         //$output .= html_writer::tag('label', get_string('dayview', 'calendar'), array('for'=>'cal_course_flt_jump'));
 232         $output .= $this->course_filter_selector($returnurl, get_string('dayview', 'calendar'));
 233         $output .= html_writer::end_tag('div');
 234         // Controls
 235         $output .= html_writer::tag('div', calendar_top_controls('day', array('id' => $calendar->courseid, 'd' => $calendar->day, 'm' => $calendar->month, 'y' => $calendar->year)), array('class'=>'controls'));
 236
 237         if (empty($events)) {
 238             // There is nothing to display today.
 239             $output .= $this->output->heading(get_string('daywithnoevents', 'calendar'), 3);
 240         } else {
 241             $output .= html_writer::start_tag('div', array('class'=>'eventlist'));
 242             $underway = array();
 243             // First, print details about events that start today
 244             foreach ($events as $event) {
 245                 $event = new calendar_event($event);
 246                 $event->calendarcourseid = $calendar->courseid;
 247                 if ($event->timestart >= $calendar->timestamp_today() && $event->timestart <= $calendar->timestamp_tomorrow()-1) {  // Print it now
 248                     $event->time = calendar_format_event_time($event, time(), null, false, $calendar->timestamp_today());
 249                     $output .= $this->event($event);
 250                 } else {                                                                 // Save this for later
 251                     $underway[] = $event;
 252                 }
 253             }
 254
 255             // Then, show a list of all events that just span this day
 256             if (!empty($underway)) {
 257                 $output .= $this->output->heading(get_string('spanningevents', 'calendar'), 3);
 258                 foreach ($underway as $event) {
 259                     $event->time = calendar_format_event_time($event, time(), null, false, $calendar->timestamp_today());
 260                     $output .= $this->event($event);
 261                 }
 262             }
 263
 264             $output .= html_writer::end_tag('div');
 265         }
 266
 267         return $output;
 268     }
 269
 270     /**
 271      * Displays an event
 272      *
 273      * @param calendar_event $event
 274      * @param bool $showactions
 275      * @return string
 276      */
 277     public function event(calendar_event $event, $showactions=true) {
 278         $event = calendar_add_event_metadata($event);
 279
 280         $anchor  = html_writer::tag('a', '', array('name'=>'event_'.$event->id));
 281
 282         $table = new html_table();
 283         $table->attributes = array('class'=>'event', 'cellspacing'=>'0');
 284         $table->data = array(
 285             0 => new html_table_row(),
 286             1 => new html_table_row(),
 287         );
 288
 289         if (!empty($event->icon)) {
 290             $table->data[0]->cells[0] = new html_table_cell($anchor.$event->icon);
 291         } else {
 292             $table->data[0]->cells[0] = new html_table_cell($anchor.$this->output->spacer(array('height'=>16, 'width'=>16, 'br'=>true)));
 293         }
 294         $table->data[0]->cells[0]->attributes['class'] .= ' picture';
 295
 296         $table->data[0]->cells[1] = new html_table_cell();
 297         $table->data[0]->cells[1]->attributes['class'] .= ' topic';
 298         if (!empty($event->referer)) {
 299             $table->data[0]->cells[1]->text .= html_writer::tag('div', $event->referer, array('class'=>'referer'));
 300         } else {
 301             $table->data[0]->cells[1]->text .= html_writer::tag('div', $event->name, array('class'=>'name'));
 302         }
 303         if (!empty($event->courselink)) {
 304             $table->data[0]->cells[1]->text .= html_writer::tag('div', $event->courselink, array('class'=>'course'));
 305         }
 306         if (!empty($event->time)) {
 307             $table->data[0]->cells[1]->text .= html_writer::tag('span', $event->time, array('class'=>'date'));
 308         } else {
 309             $table->data[0]->cells[1]->text .= html_writer::tag('span', calendar_time_representation($event->timestart), array('class'=>'date'));
 310         }
 311
 312         $table->data[1]->cells[0] = new html_table_cell('&nbsp;');
 313         $table->data[1]->cells[0]->attributes['class'] .= 'side';
 314
 315         $table->data[1]->cells[1] = new html_table_cell($event->description);
 316         $table->data[1]->cells[1]->attributes['class'] .= ' description';
 317         if (isset($event->cssclass)) {
 318             $table->data[1]->cells[1]->attributes['class'] .= ' '.$event->cssclass;
 319         }
 320
 321         if (calendar_edit_event_allowed($event) && $showactions) {
 322             if (empty($event->cmid)) {
 323                 $editlink = new moodle_url(CALENDAR_URL.'event.php', array('action'=>'edit', 'id'=>$event->id));
 324                 $deletelink = new moodle_url(CALENDAR_URL.'delete.php', array('id'=>$event->id));
 325                 if (!empty($event->calendarcourseid)) {
 326                     $editlink->param('course', $event->calendarcourseid);
 327                     $deletelink->param('course', $event->calendarcourseid);
 328                 }
 329             } else {
 330                 $editlink = new moodle_url('/course/mod.php', array('update'=>$event->cmid, 'return'=>true, 'sesskey'=>sesskey()));
 331                 $deletelink = null;
 332             }
 333
 334             $commands  = html_writer::start_tag('div', array('class'=>'commands'));
 335             $commands .= html_writer::start_tag('a', array('href'=>$editlink));
 336             $commands .= html_writer::empty_tag('img', array('src'=>$this->output->pix_url('t/edit'), 'alt'=>get_string('tt_editevent', 'calendar'), 'title'=>get_string('tt_editevent', 'calendar')));
 337             $commands .= html_writer::end_tag('a');
 338             if ($deletelink != null) {
 339                 $commands .= html_writer::start_tag('a', array('href'=>$deletelink));
 340                 $commands .= html_writer::empty_tag('img', array('src'=>$this->output->pix_url('t/delete'), 'alt'=>get_string('tt_deleteevent', 'calendar'), 'title'=>get_string('tt_deleteevent', 'calendar')));
 341                 $commands .= html_writer::end_tag('a');
 342             }
 343             $commands .= html_writer::end_tag('div');
 344             $table->data[1]->cells[1]->text .= $commands;
 345         }
 346         return html_writer::table($table);
 347     }
 348
 349     /**
 350      * Displays a month in detail
 351      *
 352      * @param calendar_information $calendar
 353      * @return string
 354      */
 355     public function show_month_detailed(calendar_information $calendar, moodle_url $returnurl  = null) {
 356         global $CFG;
 357
 358         if (empty($returnurl)) {
 359             $returnurl = $this->page->url;
 360         }
 361
 362         $date = usergetdate(time());
 363
 364         $display = new stdClass;
 365         $display->minwday = get_user_preferences('calendar_startwday', calendar_get_starting_weekday());
 366         $display->maxwday = $display->minwday + 6;
 367         $display->thismonth = ($date['mon'] == $calendar->month);
 368         $display->maxdays = calendar_days_in_month($calendar->month, $calendar->year);
 369
 370         $startwday = 0;
 371         if (get_user_timezone_offset() < 99) {
 372             // We 'll keep these values as GMT here, and offset them when the time comes to query the db
 373             $display->tstart = gmmktime(0, 0, 0, $calendar->month, 1, $calendar->year); // This is GMT
 374             $display->tend = gmmktime(23, 59, 59, $calendar->month, $display->maxdays, $calendar->year); // GMT
 375             $startwday = gmdate('w', $display->tstart); // $display->tstart is already GMT, so don't use date(): messes with server's TZ
 376         } else {
 377             // no timezone info specified
 378             $display->tstart = mktime(0, 0, 0, $calendar->month, 1, $calendar->year);
 379             $display->tend = mktime(23, 59, 59, $calendar->month, $display->maxdays, $calendar->year);
 380             $startwday = date('w', $display->tstart); // $display->tstart not necessarily GMT, so use date()
 381         }
 382
 383         // Align the starting weekday to fall in our display range
 384         if ($startwday < $display->minwday) {
 385             $startwday += 7;
 386         }
 387
 388         // Get events from database
 389         $events = calendar_get_events(usertime($display->tstart), usertime($display->tend), $calendar->users, $calendar->groups, $calendar->courses);
 390         if (!empty($events)) {
 391             foreach($events as $eventid => $event) {
 392                 $event = new calendar_event($event);
 393                 if (!empty($event->modulename)) {
 394                     $cm = get_coursemodule_from_instance($event->modulename, $event->instance);
 395                     if (!groups_course_module_visible($cm)) {
 396                         unset($events[$eventid]);
 397                     }
 398                 }
 399             }
 400         }
 401
 402         // Extract information: events vs. time
 403         calendar_events_by_day($events, $calendar->month, $calendar->year, $eventsbyday, $durationbyday, $typesbyday, $calendar->courses);
 404
 405         $output  = html_writer::start_tag('div', array('class'=>'header'));
 406         if (calendar_user_can_add_event($calendar->course)) {
 407             $output .= $this->add_event_button($calendar->course->id, null, $calendar->month, $calendar->year);
 408         }
 409         $output .= get_string('detailedmonthview', 'calendar').': '.$this->course_filter_selector($returnurl);
 410         $output .= html_writer::end_tag('div', array('class'=>'header'));
 411         // Controls
 412         $output .= html_writer::tag('div', calendar_top_controls('month', array('id' => $calendar->courseid, 'm' => $calendar->month, 'y' => $calendar->year)), array('class'=>'controls'));
 413
 414         $days = calendar_get_days();
 415
 416         $table = new html_table();
 417         $table->attributes = array('class'=>'calendarmonth calendartable');
 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         $row = new html_table_row(array());
 436         // Paddding (the first week may have blank days in the beginning)
 437         for($i = $display->minwday; $i < $startwday; ++$i) {
 438             $cell = new html_table_cell('&nbsp;');
 439             $cell->attributes = array('class'=>'nottoday');
 440             $row->cells[] = $cell;
 441         }
 442
 443         // Now display all the calendar
 444         $weekend = CALENDAR_DEFAULT_WEEKEND;
 445         if (isset($CFG->calendar_weekend)) {
 446             $weekend = intval($CFG->calendar_weekend);
 447         }
 448
 449         for ($calendar->day = 1; $calendar->day <= $display->maxdays; ++$calendar->day, ++$dayweek) {
 450             if($dayweek > $display->maxwday) {
 451                 // We need to change week (table row)
 452                 $table->data[] = $row;
 453                 $row = new html_table_row(array());
 454                 $dayweek = $display->minwday;
 455                 ++$week;
 456             }
 457
 458             // Reset vars
 459             $cell = new html_table_cell();
 460             $dayhref = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', array('view'=>'day', 'course'=>$calendar->courseid)), $calendar->day, $calendar->month, $calendar->year);
 461
 462             $cellclasses = array();
 463
 464             if ($weekend & (1 << ($dayweek % 7))) {
 465                 // Weekend. This is true no matter what the exact range is.
 466                 $cellclasses[] = 'weekend';
 467             }
 468
 469             // Special visual fx if an event is defined
 470             if (isset($eventsbyday[$calendar->day])) {
 471                 if(count($eventsbyday[$calendar->day]) == 1) {
 472                     $title = get_string('oneevent', 'calendar');
 473                 } else {
 474                     $title = get_string('manyevents', 'calendar', count($eventsbyday[$calendar->day]));
 475                 }
 476                 $cell->text = html_writer::tag('div', html_writer::link($dayhref, $calendar->day, array('title'=>$title)), array('class'=>'day'));
 477             } else {
 478                 $cell->text = html_writer::tag('div', $calendar->day, array('class'=>'day'));
 479             }
 480
 481             // Special visual fx if an event spans many days
 482             $durationclass = false;
 483             if (isset($typesbyday[$calendar->day]['durationglobal'])) {
 484                 $durationclass = 'duration_global';
 485             } else if (isset($typesbyday[$calendar->day]['durationcourse'])) {
 486                 $durationclass = 'duration_course';
 487             } else if (isset($typesbyday[$calendar->day]['durationgroup'])) {
 488                 $durationclass = 'duration_group';
 489             } else if (isset($typesbyday[$calendar->day]['durationuser'])) {
 490                 $durationclass = 'duration_user';
 491             }
 492             if ($durationclass) {
 493                 $cellclasses[] = 'duration';
 494                 $cellclasses[] = $durationclass;
 495             }
 496
 497             // Special visual fx for today
 498             if($display->thismonth && $calendar->day == $calendar->day) {
 499                 $cellclasses[] = 'today';
 500             } else {
 501                 $cellclasses[] = 'nottoday';
 502             }
 503             $cell->attributes = array('class'=>join(' ',$cellclasses));
 504
 505             if (isset($eventsbyday[$calendar->day])) {
 506                 $cell->text .= html_writer::start_tag('ul', array('class'=>'events-new'));
 507                 foreach($eventsbyday[$calendar->day] as $eventindex) {
 508                     // If event has a class set then add it to the event <li> tag
 509                     $attributes = array();
 510                     if (!empty($events[$eventindex]->class)) {
 511                         $attributes['class'] = $events[$eventindex]->class;
 512                     }
 513                     $dayhref->set_anchor('event_'.$events[$eventindex]->id);
 514                     $link = html_writer::link($dayhref, format_string($events[$eventindex]->name, true));
 515                     $cell->text .= html_writer::tag('li', $link, $attributes);
 516                 }
 517                 $cell->text .= html_writer::end_tag('ul');
 518             }
 519             if (isset($durationbyday[$calendar->day])) {
 520                 $cell->text .= html_writer::start_tag('ul', array('class'=>'events-underway'));
 521                 foreach($durationbyday[$calendar->day] as $eventindex) {
 522                     $cell->text .= html_writer::tag('li', '['.format_string($events[$eventindex]->name,true).']', array('class'=>'events-underway'));
 523                 }
 524                 $cell->text .= html_writer::end_tag('ul');
 525             }
 526             $row->cells[] = $cell;
 527         }
 528
 529         // Paddding (the last week may have blank days at the end)
 530         for($i = $dayweek; $i <= $display->maxwday; ++$i) {
 531             $cell = new html_table_cell('&nbsp;');
 532             $cell->attributes = array('class'=>'nottoday');
 533             $row->cells[] = $cell;
 534         }
 535         $table->data[] = $row;
 536         $output .= html_writer::table($table);
 537
 538         // OK, now for the filtering display
 539         $output .= $this->filter_selection_table($calendar);
 540         return $output;
 541     }
 542
 543     /**
 544      * Displays a filter selection table
 545      *
 546      * @param calendar_information $calendar
 547      * @return string
 548      */
 549     protected function filter_selection_table(calendar_information $calendar, moodle_url $returnurl = null) {
 550         global $SESSION;
 551
 552         if ($returnurl === null) {
 553             $returnurl = $this->page->url;
 554         }
 555
 556         $output  = html_writer::start_tag('div', array('class'=>'filters'));
 557         $output .= html_writer::start_tag('table');
 558         $output .= html_writer::start_tag('tr');
 559
 560         // Global events
 561         $link = new moodle_url(CALENDAR_URL.'set.php', array('var' => 'showglobal', 'return' => $returnurl));
 562         if (calendar_show_event_type(CALENDAR_EVENT_GLOBAL)) {
 563             $output .= html_writer::tag('td', '', array('class'=>'calendar_event_global', 'style'=>'width:8px;'));
 564             $output .= html_writer::tag('td', html_writer::tag('strong', get_string('globalevents', 'calendar')).' '.get_string('shown', 'calendar').' ('.html_writer::link($link, get_string('clickhide', 'calendar')).')');
 565         } else {
 566             $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 567             $output .= html_writer::tag('td', html_writer::tag('strong', get_string('globalevents', 'calendar')).' '.get_string('hidden', 'calendar').' ('.html_writer::link($link, get_string('clickshow', 'calendar')).')');
 568         }
 569
 570         // Course events
 571         $link = new moodle_url(CALENDAR_URL.'set.php', array('var'=>'showcourses', 'return' => $returnurl));
 572         if (calendar_show_event_type(CALENDAR_EVENT_COURSE)) {
 573             $output .= html_writer::tag('td', '', array('class'=>'calendar_event_course', 'style'=>'width:8px;'));
 574             $output .= html_writer::tag('td', html_writer::tag('strong', get_string('courseevents', 'calendar')).' '.get_string('shown', 'calendar').' ('.html_writer::link($link, get_string('clickhide', 'calendar')).')');
 575         } else {
 576             $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 577             $output .= html_writer::tag('td', html_writer::tag('strong', get_string('courseevents', 'calendar')).' '.get_string('hidden', 'calendar').' ('.html_writer::link($link, get_string('clickshow', 'calendar')).')');
 578         }
 579         $output .= html_writer::end_tag('tr');
 580
 581         if(isloggedin() && !isguestuser()) {
 582             $output .= html_writer::start_tag('tr');
 583             // Group events
 584             $link = new moodle_url(CALENDAR_URL.'set.php', array('var'=>'showgroups', 'return' => $returnurl));
 585             if (calendar_show_event_type(CALENDAR_EVENT_GROUP)) {
 586                 $output .= html_writer::tag('td', '', array('class'=>'calendar_event_group', 'style'=>'width:8px;'));
 587                 $output .= html_writer::tag('td', html_writer::tag('strong', get_string('groupevents', 'calendar')).' '.get_string('shown', 'calendar').' ('.html_writer::link($link, get_string('clickhide', 'calendar')).')');
 588             } else {
 589                 $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 590                 $output .= html_writer::tag('td', html_writer::tag('strong', get_string('groupevents', 'calendar')).' '.get_string('hidden', 'calendar').' ('.html_writer::link($link, get_string('clickshow', 'calendar')).')');
 591             }
 592             // User events
 593             $link = new moodle_url(CALENDAR_URL.'set.php', array('var'=>'showuser', 'return' => $returnurl));
 594             if (calendar_show_event_type(CALENDAR_EVENT_USER)) {
 595                 $output .= html_writer::tag('td', '', array('class'=>'calendar_event_user', 'style'=>'width:8px;'));
 596                 $output .= html_writer::tag('td', html_writer::tag('strong', get_string('userevents', 'calendar')).' '.get_string('shown', 'calendar').' ('.html_writer::link($link, get_string('clickhide', 'calendar')).')');
 597             } else {
 598                 $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 599                 $output .= html_writer::tag('td', html_writer::tag('strong', get_string('userevents', 'calendar')).' '.get_string('hidden', 'calendar').' ('.html_writer::link($link, get_string('clickshow', 'calendar')).')');
 600             }
 601             $output .= html_writer::end_tag('tr');
 602         }
 603         $output .= html_writer::end_tag('table');
 604         $output .= html_writer::end_tag('div');
 605         return $output;
 606     }
 607
 608     /**
 609      * Displays upcoming events
 610      *
 611      * @param calendar_information $calendar
 612      * @param int $futuredays
 613      * @param int $maxevents
 614      * @return string
 615      */
 616     public function show_upcoming_events(calendar_information $calendar, $futuredays, $maxevents, moodle_url $returnurl = null) {
 617
 618         if ($returnurl === null) {
 619             $returnurl = $this->page->url;
 620         }
 621
 622         $events = calendar_get_upcoming($calendar->courses, $calendar->groups, $calendar->users, $futuredays, $maxevents);
 623
 624         $output  = html_writer::start_tag('div', array('class'=>'header'));
 625         if (calendar_user_can_add_event($calendar->course)) {
 626             $output .= $this->add_event_button($calendar->course->id);
 627         }
 628         $output .= html_writer::tag('label', get_string('upcomingevents', 'calendar'), array('for'=>'cal_course_flt_jump'));
 629         $output .= $this->course_filter_selector($returnurl);
 630         $output .= html_writer::end_tag('div');
 631
 632         if ($events) {
 633             $output .= html_writer::start_tag('div', array('class'=>'eventlist'));
 634             foreach ($events as $event) {
 635                 // Convert to calendar_event object so that we transform description
 636                 // accordingly
 637                 $event = new calendar_event($event);
 638                 $event->calendarcourseid = $calendar->courseid;
 639                 $output .= $this->event($event);
 640             }
 641             $output .= html_writer::end_tag('div');
 642         } else {
 643             $output .= $this->output->heading(get_string('noupcomingevents', 'calendar'));
 644         }
 645
 646         return $output;
 647     }
 648
 649     /**
 650      * Displays a course filter selector
 651      *
 652      * @param array $getvars
 653      * @return string
 654      */
 655     protected function course_filter_selector(moodle_url $returnurl, $label=null) {
 656         global $USER, $SESSION, $CFG;
 657
 658         if (!isloggedin() or isguestuser()) {
 659             return '';
 660         }
 661
 662         if (has_capability('moodle/calendar:manageentries', get_context_instance(CONTEXT_SYSTEM)) && !empty($CFG->calendar_adminseesall)) {
 663             $courses = get_courses('all', 'c.shortname','c.id,c.shortname');
 664         } else {
 665             $courses = enrol_get_my_courses();
 666         }
 667
 668         unset($courses[SITEID]);
 669
 670         $courseoptions = array();
 671         $courseoptions[SITEID] = get_string('fulllistofcourses');
 672         foreach ($courses as $course) {
 673             $courseoptions[$course->id] = format_string($course->shortname);
 674         }
 675
 676         if ($this->page->course->id !== SITEID) {
 677             $selected = $this->page->course->id;
 678         } else {
 679             $selected = '';
 680         }
 681         $select = new single_select(new moodle_url(CALENDAR_URL.'set.php', array('return' => $returnurl, 'var' => 'setcourse')), 'id', $courseoptions, $selected, null);
 682         $select->class = 'cal_courses_flt';
 683         if ($label !== null) {
 684             $select->label = $label;
 685         }
 686         return $this->output->render($select);
 687     }
 688 }