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 if (!defined('MOODLE_INTERNAL')) {
  27     die('Direct access to this script is forbidden.');    ///  It must be included from a Moodle page
  28 }
  29
  30 /**
  31  * The primary renderer for the calendar.
  32  */
  33 class core_calendar_renderer extends plugin_renderer_base {
  34
  35     /**
  36      * Creates a basic export form
  37      *
  38      * @param bool $allowthisweek
  39      * @param bool $allownextweek
  40      * @param bool $allownextmonth
  41      * @param int $userid
  42      * @param string $authtoken
  43      * @return string
  44      */
  45     public function basic_export_form($allowthisweek, $allownextweek, $allownextmonth, $userid, $authtoken) {
  46
  47         $output  = html_writer::tag('div', get_string('export', 'calendar'), array('class'=>'header'));
  48         $output .= html_writer::start_tag('fieldset');
  49         $output .= html_writer::tag('legend', get_string('commontasks', 'calendar'));
  50         $output .= html_writer::start_tag('form', array('action'=>new moodle_url('/calendar/export_execute.php'), 'method'=>'get'));
  51
  52         $output .= html_writer::tag('div', get_string('iwanttoexport', 'calendar'));
  53
  54         $output .= html_writer::start_tag('div', array('class'=>'indent'));
  55         $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_what', 'id'=>'pw_all', 'value'=>'all', 'checked'=>'checked'));
  56         $output .= html_writer::tag('label', get_string('eventsall', 'calendar'), array('for'=>'pw_all'));
  57         $output .= html_writer::empty_tag('br');
  58         $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_what', 'id'=>'pw_course', 'value'=>'courses'));
  59         $output .= html_writer::tag('label', get_string('eventsrelatedtocourses', 'calendar'), array('for'=>'pw_course'));
  60         $output .= html_writer::empty_tag('br');
  61         $output .= html_writer::end_tag('div');
  62
  63         $output .= html_writer::tag('div', get_string('for', 'calendar').':');
  64
  65         $output .= html_writer::start_tag('div', array('class'=>'indent'));
  66         if ($allowthisweek) {
  67             $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_wknow', 'value'=>'weeknow', 'checked'=>'checked'));
  68             $output .= html_writer::tag('label', get_string('weekthis', 'calendar'), array('for'=>'pt_wknow'));
  69             $output .= html_writer::empty_tag('br');
  70         }
  71         if ($allownextweek) {
  72             $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_wknext', 'value'=>'weeknext'));
  73             $output .= html_writer::tag('label', get_string('weeknext', 'calendar'), array('for'=>'pt_wknext'));
  74             $output .= html_writer::empty_tag('br');
  75         }
  76         $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_monnow', 'value'=>'monthnow'));
  77         $output .= html_writer::tag('label', get_string('monththis', 'calendar'), array('for'=>'pt_monnow'));
  78         $output .= html_writer::empty_tag('br');
  79         if ($allownextmonth) {
  80             $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_monnext', 'value'=>'monthnext'));
  81             $output .= html_writer::tag('label', get_string('monthnext', 'calendar'), array('for'=>'pt_monnext'));
  82             $output .= html_writer::empty_tag('br');
  83         }
  84         $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_recupc', 'value'=>'recentupcoming'));
  85         $output .= html_writer::tag('label', get_string('recentupcoming', 'calendar'), array('for'=>'pt_recupc'));
  86         $output .= html_writer::empty_tag('br');
  87         $output .= html_writer::end_tag('div');
  88
  89         $output .= html_writer::start_tag('div', array('class'=>'rightalign'));
  90         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_d', 'value'=>''));
  91         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_m', 'value'=>''));
  92         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_y', 'value'=>''));
  93         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'userid', 'value'=>$userid));
  94         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'authtoken', 'value'=>$authtoken));
  95
  96         $output .= html_writer::empty_tag('input', array('type'=>'submit', 'name' => 'generateurl', 'id'=>'generateurl', 'value'=>get_string('generateurlbutton', 'calendar')));
  97         $output .= html_writer::empty_tag('input', array('type'=>'submit', 'value'=>get_string('exportbutton', 'calendar')));
  98
  99         $output .= html_writer::end_tag('div');
 100
 101         $output .= html_writer::end_tag('form');
 102         $output .= html_writer::end_tag('fieldset');
 103
 104         $output .= html_writer::start_tag('div', array('id'=>'urlbox', 'style'=>'display:none;'));
 105         $output .= html_writer::tag('p', get_string('urlforical', 'calendar'));
 106         $output .= html_writer::tag('div', '', array('id'=>'url', 'style'=>'overflow:scroll;width:650px;'));
 107         $output .= html_writer::end_tag('div');
 108
 109         return $output;
 110     }
 111
 112     /**
 113      * Starts the standard layout for the page
 114      *
 115      * @return string
 116      */
 117     public function start_layout() {
 118         return html_writer::start_tag('div', array('class'=>'maincalendar'));
 119     }
 120
 121     /**
 122      * Creates the remainder of the layout
 123      *
 124      * @return string
 125      */
 126     public function complete_layout() {
 127         return html_writer::end_tag('div');
 128     }
 129
 130     /**
 131      * Produces the content for the filters block (pretend block)
 132      *
 133      * @param int $courseid
 134      * @param int $day
 135      * @param int $month
 136      * @param int $year
 137      * @param int $view
 138      * @param int $courses
 139      * @return string
 140      */
 141     public function fake_block_filters($courseid, $day, $month, $year, $view, $courses) {
 142         $returnurl = $this->page->url;
 143         $returnurl->param('course', $courseid);
 144         return html_writer::tag('div', calendar_filter_controls($returnurl), array('class'=>'calendar_filters filters'));
 145     }
 146
 147     /**
 148      * Produces the content for the three months block (pretend block)
 149      *
 150      * This includes the previous month, the current month, and the next month
 151      *
 152      * @param calendar_information $calendar
 153      * @return string
 154      */
 155     public function fake_block_threemonths(calendar_information $calendar) {
 156
 157         list($prevmon, $prevyr) = calendar_sub_month($calendar->month, $calendar->year);
 158         list($nextmon, $nextyr) = calendar_add_month($calendar->month, $calendar->year);
 159
 160         $content  = html_writer::start_tag('div', array('class'=>'minicalendarblock'));
 161         $content .= calendar_top_controls('display', array('id' => $calendar->courseid, 'm' => $prevmon, 'y' => $prevyr));
 162         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, $prevmon, $prevyr);
 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' => $calendar->month, 'y' => $calendar->year));
 166         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, $calendar->month, $calendar->year);
 167         $content .= html_writer::end_tag('div');
 168         $content .= html_writer::start_tag('div', array('class'=>'minicalendarblock'));
 169         $content .= calendar_top_controls('display', array('id' => $calendar->courseid, 'm' => $nextmon, 'y' => $nextyr));
 170         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, $nextmon, $nextyr);
 171         $content .= html_writer::end_tag('div');
 172         return $content;
 173     }
 174
 175     /**
 176      * Adds a pretent calendar block
 177      *
 178      * @param block_contents $bc
 179      * @param mixed $pos BLOCK_POS_RIGHT | BLOCK_POS_LEFT
 180      */
 181     public function add_pretend_calendar_block(block_contents $bc, $pos=BLOCK_POS_RIGHT) {
 182         $this->page->blocks->add_fake_block($bc, $pos);
 183     }
 184
 185     /**
 186      * Creates a button to add a new event
 187      *
 188      * @param int $courseid
 189      * @param int $day
 190      * @param int $month
 191      * @param int $year
 192      * @return string
 193      */
 194     protected function add_event_button($courseid, $day=null, $month=null, $year=null) {
 195         $output = html_writer::start_tag('div', array('class'=>'buttons'));
 196         $output .= html_writer::start_tag('form', array('action'=>CALENDAR_URL.'event.php', 'method'=>'get'));
 197         $output .= html_writer::start_tag('div');
 198         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'action', 'value'=>'new'));
 199         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'course', 'value'=>$courseid));
 200         if ($day !== null) {
 201             $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_d', 'value'=>$day));
 202         }
 203         if ($month !== null) {
 204             $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_m', 'value'=>$month));
 205         }
 206         if ($year !== null) {
 207             $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_y', 'value'=>$year));
 208         }
 209         $output .= html_writer::empty_tag('input', array('type'=>'submit', 'value'=>get_string('newevent', 'calendar')));
 210         $output .= html_writer::end_tag('div');
 211         $output .= html_writer::end_tag('form');
 212         $output .= html_writer::end_tag('div');
 213         return $output;
 214     }
 215
 216     /**
 217      * Displays the calendar for a single day
 218      *
 219      * @param calendar_information $calendar
 220      * @return string
 221      */
 222     public function show_day(calendar_information $calendar, moodle_url $returnurl = null) {
 223
 224         if ($returnurl === null) {
 225             $returnurl = $this->page->url;
 226         }
 227
 228         $calendar->checkdate();
 229         $events = calendar_get_upcoming($calendar->courses, $calendar->groups, $calendar->users, 1, 100, $calendar->timestamp_today());
 230
 231         $output  = html_writer::start_tag('div', array('class'=>'header'));
 232         if (calendar_user_can_add_event($calendar->course)) {
 233             $output .= $this->add_event_button($calendar->course->id, $calendar->day, $calendar->month, $calendar->year);
 234         }
 235         //$output .= html_writer::tag('label', get_string('dayview', 'calendar'), array('for'=>'cal_course_flt_jump'));
 236         $output .= $this->course_filter_selector($returnurl, get_string('dayview', 'calendar'));
 237         $output .= html_writer::end_tag('div');
 238         // Controls
 239         $output .= html_writer::tag('div', calendar_top_controls('day', array('id' => $calendar->courseid, 'd' => $calendar->day, 'm' => $calendar->month, 'y' => $calendar->year)), array('class'=>'controls'));
 240
 241         if (empty($events)) {
 242             // There is nothing to display today.
 243             $output .= $this->output->heading(get_string('daywithnoevents', 'calendar'), 3);
 244         } else {
 245             $output .= html_writer::start_tag('div', array('class'=>'eventlist'));
 246             $underway = array();
 247             // First, print details about events that start today
 248             foreach ($events as $event) {
 249                 $event = new calendar_event($event);
 250                 $event->calendarcourseid = $calendar->courseid;
 251                 if ($event->timestart >= $calendar->timestamp_today() && $event->timestart <= $calendar->timestamp_tomorrow()-1) {  // Print it now
 252                     $event->time = calendar_format_event_time($event, time(), null, false, $calendar->timestamp_today());
 253                     $output .= $this->event($event);
 254                 } else {                                                                 // Save this for later
 255                     $underway[] = $event;
 256                 }
 257             }
 258
 259             // Then, show a list of all events that just span this day
 260             if (!empty($underway)) {
 261                 $output .= $this->output->heading(get_string('spanningevents', 'calendar'), 3);
 262                 foreach ($underway as $event) {
 263                     $event->time = calendar_format_event_time($event, time(), null, false, $calendar->timestamp_today());
 264                     $output .= $this->event($event);
 265                 }
 266             }
 267
 268             $output .= html_writer::end_tag('div');
 269         }
 270
 271         return $output;
 272     }
 273
 274     /**
 275      * Displays an event
 276      *
 277      * @param calendar_event $event
 278      * @param bool $showactions
 279      * @return string
 280      */
 281     public function event(calendar_event $event, $showactions=true) {
 282         $event = calendar_add_event_metadata($event);
 283
 284         $anchor  = html_writer::tag('a', '', array('name'=>'event_'.$event->id));
 285
 286         $table = new html_table();
 287         $table->attributes = array('class'=>'event', 'cellspacing'=>'0');
 288         $table->data = array(
 289             0 => new html_table_row(),
 290             1 => new html_table_row(),
 291         );
 292
 293         if (!empty($event->icon)) {
 294             $table->data[0]->cells[0] = new html_table_cell($anchor.$event->icon);
 295         } else {
 296             $table->data[0]->cells[0] = new html_table_cell($anchor.$this->output->spacer(array('height'=>16, 'width'=>16, 'br'=>true)));
 297         }
 298         $table->data[0]->cells[0]->attributes['class'] .= ' picture';
 299
 300         $table->data[0]->cells[1] = new html_table_cell();
 301         $table->data[0]->cells[1]->attributes['class'] .= ' topic';
 302         if (!empty($event->referer)) {
 303             $table->data[0]->cells[1]->text .= html_writer::tag('div', $event->referer, array('class'=>'referer'));
 304         } else {
 305             $table->data[0]->cells[1]->text .= html_writer::tag('div', $event->name, array('class'=>'name'));
 306         }
 307         if (!empty($event->courselink)) {
 308             $table->data[0]->cells[1]->text .= html_writer::tag('div', $event->courselink, array('class'=>'course'));
 309         }
 310         if (!empty($event->time)) {
 311             $table->data[0]->cells[1]->text .= html_writer::tag('span', $event->time, array('class'=>'date'));
 312         } else {
 313             $table->data[0]->cells[1]->text .= html_writer::tag('span', calendar_time_representation($event->timestart), array('class'=>'date'));
 314         }
 315
 316         $table->data[1]->cells[0] = new html_table_cell('&nbsp;');
 317         $table->data[1]->cells[0]->attributes['class'] .= 'side';
 318
 319         $table->data[1]->cells[1] = new html_table_cell($event->description);
 320         $table->data[1]->cells[1]->attributes['class'] .= ' description';
 321         if (isset($event->cssclass)) {
 322             $table->data[1]->cells[1]->attributes['class'] .= ' '.$event->cssclass;
 323         }
 324
 325         if (calendar_edit_event_allowed($event) && $showactions) {
 326             if (empty($event->cmid)) {
 327                 $editlink = new moodle_url(CALENDAR_URL.'event.php', array('action'=>'edit', 'id'=>$event->id));
 328                 $deletelink = new moodle_url(CALENDAR_URL.'delete.php', array('id'=>$event->id));
 329                 if (!empty($event->calendarcourseid)) {
 330                     $editlink->param('course', $event->calendarcourseid);
 331                     $deletelink->param('course', $event->calendarcourseid);
 332                 }
 333             } else {
 334                 $editlink = new moodle_url('/course/mod.php', array('update'=>$event->cmid, 'return'=>true, 'sesskey'=>sesskey()));
 335                 $deletelink = null;
 336             }
 337
 338             $commands  = html_writer::start_tag('div', array('class'=>'commands'));
 339             $commands .= html_writer::start_tag('a', array('href'=>$editlink));
 340             $commands .= html_writer::empty_tag('img', array('src'=>$this->output->pix_url('t/edit'), 'alt'=>get_string('tt_editevent', 'calendar'), 'title'=>get_string('tt_editevent', 'calendar')));
 341             $commands .= html_writer::end_tag('a');
 342             if ($deletelink != null) {
 343                 $commands .= html_writer::start_tag('a', array('href'=>$deletelink));
 344                 $commands .= html_writer::empty_tag('img', array('src'=>$this->output->pix_url('t/delete'), 'alt'=>get_string('tt_deleteevent', 'calendar'), 'title'=>get_string('tt_deleteevent', 'calendar')));
 345                 $commands .= html_writer::end_tag('a');
 346             }
 347             $commands .= html_writer::end_tag('div');
 348             $table->data[1]->cells[1]->text .= $commands;
 349         }
 350         return html_writer::table($table);
 351     }
 352
 353     /**
 354      * Displays a month in detail
 355      *
 356      * @param calendar_information $calendar
 357      * @return string
 358      */
 359     public function show_month_detailed(calendar_information $calendar, moodle_url $returnurl  = null) {
 360         global $CFG;
 361
 362         if (empty($returnurl)) {
 363             $returnurl = $this->page->url;
 364         }
 365
 366         $date = usergetdate(time());
 367
 368         $display = new stdClass;
 369         $display->minwday = get_user_preferences('calendar_startwday', calendar_get_starting_weekday());
 370         $display->maxwday = $display->minwday + 6;
 371         $display->thismonth = ($date['mon'] == $calendar->month);
 372         $display->maxdays = calendar_days_in_month($calendar->month, $calendar->year);
 373
 374         $startwday = 0;
 375         if (get_user_timezone_offset() < 99) {
 376             // We 'll keep these values as GMT here, and offset them when the time comes to query the db
 377             $display->tstart = gmmktime(0, 0, 0, $calendar->month, 1, $calendar->year); // This is GMT
 378             $display->tend = gmmktime(23, 59, 59, $calendar->month, $display->maxdays, $calendar->year); // GMT
 379             $startwday = gmdate('w', $display->tstart); // $display->tstart is already GMT, so don't use date(): messes with server's TZ
 380         } else {
 381             // no timezone info specified
 382             $display->tstart = mktime(0, 0, 0, $calendar->month, 1, $calendar->year);
 383             $display->tend = mktime(23, 59, 59, $calendar->month, $display->maxdays, $calendar->year);
 384             $startwday = date('w', $display->tstart); // $display->tstart not necessarily GMT, so use date()
 385         }
 386
 387         // Align the starting weekday to fall in our display range
 388         if ($startwday < $display->minwday) {
 389             $startwday += 7;
 390         }
 391
 392         // Get events from database
 393         $events = calendar_get_events(usertime($display->tstart), usertime($display->tend), $calendar->users, $calendar->groups, $calendar->courses);
 394         if (!empty($events)) {
 395             foreach($events as $eventid => $event) {
 396                 $event = new calendar_event($event);
 397                 if (!empty($event->modulename)) {
 398                     $cm = get_coursemodule_from_instance($event->modulename, $event->instance);
 399                     if (!groups_course_module_visible($cm)) {
 400                         unset($events[$eventid]);
 401                     }
 402                 }
 403             }
 404         }
 405
 406         // Extract information: events vs. time
 407         calendar_events_by_day($events, $calendar->month, $calendar->year, $eventsbyday, $durationbyday, $typesbyday, $calendar->courses);
 408
 409         $output  = html_writer::start_tag('div', array('class'=>'header'));
 410         if (calendar_user_can_add_event($calendar->course)) {
 411             $output .= $this->add_event_button($calendar->course->id, null, $calendar->month, $calendar->year);
 412         }
 413         $output .= get_string('detailedmonthview', 'calendar').': '.$this->course_filter_selector($returnurl);
 414         $output .= html_writer::end_tag('div', array('class'=>'header'));
 415         // Controls
 416         $output .= html_writer::tag('div', calendar_top_controls('month', array('id' => $calendar->courseid, 'm' => $calendar->month, 'y' => $calendar->year)), array('class'=>'controls'));
 417
 418         $days = calendar_get_days();
 419
 420         $table = new html_table();
 421         $table->attributes = array('class'=>'calendarmonth calendartable');
 422         $time = make_timestamp($calendar->year, $calendar->month);
 423         $table->summary = get_string('calendarheading', 'calendar', userdate($time, get_string('strftimemonthyear')));
 424         $table->data = array();
 425
 426         $header = new html_table_row();
 427         $header->attributes = array('class'=>'weekdays');
 428         $header->cells = array();
 429         for($i = $display->minwday; $i <= $display->maxwday; ++$i) {
 430             // This uses the % operator to get the correct weekday no matter what shift we have
 431             // applied to the $display->minwday : $display->maxwday range from the default 0 : 6
 432             $cell = new html_table_cell(get_string($days[$i % 7], 'calendar'));
 433             $cell->header = true;
 434             $header->cells[] = $cell;
 435         }
 436
 437         // For the table display. $week is the row; $dayweek is the column.
 438         $week = 1;
 439         $dayweek = $startwday;
 440
 441         // Create an array of all the week days.
 442         $wdays = array(0 => '<strong>'. get_string('sunday', 'calendar'). '</strong>',
 443                        1 => '<strong>'. get_string('monday', 'calendar'). '</strong>',
 444                        2 => '<strong>'. get_string('tuesday', 'calendar'). '</strong>',
 445                        3 => '<strong>'. get_string('wednesday', 'calendar'). '</strong>',
 446                        4 => '<strong>'. get_string('thursday', 'calendar'). '</strong>',
 447                        5 => '<strong>'. get_string('friday', 'calendar'). '</strong>',
 448                        6 => '<strong>'. get_string('saturday', 'calendar'). '</strong>');
 449
 450         // Loop only if the day offset is greater than 0.
 451         // This loop involves shifting the days around until the desired start day
 452         // is at the start of the array.
 453         $daycount = 0;
 454         while ($display->minwday > $daycount++) {
 455             $wdays_end = array_shift($wdays);
 456             array_push($wdays, $wdays_end);
 457         }
 458
 459         // Now we set the (modified) array to the table header to be displayed.
 460         $table->head = $wdays;
 461
 462         $row = new html_table_row(array());
 463
 464         // Paddding (the first week may have blank days in the beginning)
 465         for($i = $display->minwday; $i < $startwday; ++$i) {
 466             $cell = new html_table_cell('&nbsp;');
 467             $cell->attributes = array('class'=>'nottoday dayblank');
 468             $row->cells[] = $cell;
 469         }
 470
 471         // Now display all the calendar
 472         $weekend = CALENDAR_DEFAULT_WEEKEND;
 473         if (isset($CFG->calendar_weekend)) {
 474             $weekend = intval($CFG->calendar_weekend);
 475         }
 476
 477         for ($calendar->day = 1; $calendar->day <= $display->maxdays; ++$calendar->day, ++$dayweek) {
 478             if($dayweek > $display->maxwday) {
 479                 // We need to change week (table row)
 480                 $table->data[] = $row;
 481                 $row = new html_table_row(array());
 482                 $dayweek = $display->minwday;
 483                 ++$week;
 484             }
 485
 486             // Reset vars
 487             $cell = new html_table_cell();
 488             $dayhref = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', array('view'=>'day', 'course'=>$calendar->courseid)), $calendar->day, $calendar->month, $calendar->year);
 489
 490             $cellclasses = array();
 491
 492             if ($weekend & (1 << ($dayweek % 7))) {
 493                 // Weekend. This is true no matter what the exact range is.
 494                 $cellclasses[] = 'weekend';
 495             }
 496
 497             // Special visual fx if an event is defined
 498             if (isset($eventsbyday[$calendar->day])) {
 499                 if(count($eventsbyday[$calendar->day]) == 1) {
 500                     $title = get_string('oneevent', 'calendar');
 501                 } else {
 502                     $title = get_string('manyevents', 'calendar', count($eventsbyday[$calendar->day]));
 503                 }
 504                 $cell->text = html_writer::tag('div', html_writer::link($dayhref, $calendar->day, array('title'=>$title)), array('class'=>'day'));
 505             } else {
 506                 $cell->text = html_writer::tag('div', $calendar->day, array('class'=>'day'));
 507             }
 508
 509             // Special visual fx if an event spans many days
 510             $durationclass = false;
 511             if (isset($typesbyday[$calendar->day]['durationglobal'])) {
 512                 $durationclass = 'duration_global';
 513             } else if (isset($typesbyday[$calendar->day]['durationcourse'])) {
 514                 $durationclass = 'duration_course';
 515             } else if (isset($typesbyday[$calendar->day]['durationgroup'])) {
 516                 $durationclass = 'duration_group';
 517             } else if (isset($typesbyday[$calendar->day]['durationuser'])) {
 518                 $durationclass = 'duration_user';
 519             }
 520             if ($durationclass) {
 521                 $cellclasses[] = 'duration';
 522                 $cellclasses[] = $durationclass;
 523             }
 524
 525             // Special visual fx for today
 526             if ($display->thismonth && $calendar->day == $date['mday']) {
 527                 $cellclasses[] = 'day today';
 528             } else {
 529                 $cellclasses[] = 'day nottoday';
 530             }
 531             $cell->attributes = array('class'=>join(' ',$cellclasses));
 532
 533             if (isset($eventsbyday[$calendar->day])) {
 534                 $cell->text .= html_writer::start_tag('ul', array('class'=>'events-new'));
 535                 foreach($eventsbyday[$calendar->day] as $eventindex) {
 536                     // If event has a class set then add it to the event <li> tag
 537                     $attributes = array();
 538                     if (!empty($events[$eventindex]->class)) {
 539                         $attributes['class'] = $events[$eventindex]->class;
 540                     }
 541                     $dayhref->set_anchor('event_'.$events[$eventindex]->id);
 542                     $link = html_writer::link($dayhref, format_string($events[$eventindex]->name, true));
 543                     $cell->text .= html_writer::tag('li', $link, $attributes);
 544                 }
 545                 $cell->text .= html_writer::end_tag('ul');
 546             }
 547             if (isset($durationbyday[$calendar->day])) {
 548                 $cell->text .= html_writer::start_tag('ul', array('class'=>'events-underway'));
 549                 foreach($durationbyday[$calendar->day] as $eventindex) {
 550                     $cell->text .= html_writer::tag('li', '['.format_string($events[$eventindex]->name,true).']', array('class'=>'events-underway'));
 551                 }
 552                 $cell->text .= html_writer::end_tag('ul');
 553             }
 554             $row->cells[] = $cell;
 555         }
 556
 557         // Paddding (the last week may have blank days at the end)
 558         for($i = $dayweek; $i <= $display->maxwday; ++$i) {
 559             $cell = new html_table_cell('&nbsp;');
 560             $cell->attributes = array('class'=>'nottoday dayblank');
 561             $row->cells[] = $cell;
 562         }
 563         $table->data[] = $row;
 564         $output .= html_writer::table($table);
 565
 566         return $output;
 567     }
 568
 569     /**
 570      * Displays a filter selection table
 571      *
 572      * @param calendar_information $calendar
 573      * @return string
 574      * @deprecated since Moodle 2.4 MDL-32309
 575      * @see calendar_filter_controls()
 576      */
 577     protected function filter_selection_table(calendar_information $calendar, moodle_url $returnurl = null) {
 578         global $SESSION;
 579         debugging('Method core_calendar_renderer::filter_selection_table() is deprecated, please use '.
 580                 'calendar_filter_controls() instead', DEBUG_DEVELOPER);
 581
 582         if ($returnurl === null) {
 583             $returnurl = $this->page->url;
 584         }
 585
 586         $output  = html_writer::start_tag('div', array('class'=>'filters'));
 587         $output .= html_writer::start_tag('table');
 588         $output .= html_writer::start_tag('tr');
 589
 590         // Global events
 591         $link = new moodle_url(CALENDAR_URL.'set.php', array('var' => 'showglobal', 'return' => base64_encode($returnurl->out(false)), 'sesskey'=>sesskey()));
 592         $strglobalevents = get_string('globalevents', 'calendar');
 593         if (calendar_show_event_type(CALENDAR_EVENT_GLOBAL)) {
 594             $output .= html_writer::tag('td', '', array('class'=>'calendar_event_global', 'style'=>'width:8px;'));
 595             $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>').')');
 596         } else {
 597             $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 598             $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>').')');
 599         }
 600
 601         // Course events
 602         $link = new moodle_url(CALENDAR_URL.'set.php', array('var'=>'showcourses', 'return' => base64_encode($returnurl->out(false)), 'sesskey'=>sesskey()));
 603         $strcourseevents = get_string('courseevents', 'calendar');
 604         if (calendar_show_event_type(CALENDAR_EVENT_COURSE)) {
 605             $output .= html_writer::tag('td', '', array('class'=>'calendar_event_course', 'style'=>'width:8px;'));
 606             $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>').')');
 607         } else {
 608             $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 609             $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>').')');
 610         }
 611         $output .= html_writer::end_tag('tr');
 612
 613         if(isloggedin() && !isguestuser()) {
 614             $output .= html_writer::start_tag('tr');
 615             // Group events
 616             $link = new moodle_url(CALENDAR_URL.'set.php', array('var'=>'showgroups', 'return' => base64_encode($returnurl->out(false)), 'sesskey'=>sesskey()));
 617             $strgroupevents = get_string('groupevents', 'calendar');
 618             if (calendar_show_event_type(CALENDAR_EVENT_GROUP)) {
 619                 $output .= html_writer::tag('td', '', array('class'=>'calendar_event_group', 'style'=>'width:8px;'));
 620                 $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>').')');
 621             } else {
 622                 $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 623                 $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>').')');
 624             }
 625             // User events
 626             $link = new moodle_url(CALENDAR_URL.'set.php', array('var'=>'showuser', 'return' => base64_encode($returnurl->out(false)), 'sesskey'=>sesskey()));
 627             $struserevents = get_string('userevents', 'calendar');
 628             if (calendar_show_event_type(CALENDAR_EVENT_USER)) {
 629                 $output .= html_writer::tag('td', '', array('class'=>'calendar_event_user', 'style'=>'width:8px;'));
 630                 $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>').')');
 631             } else {
 632                 $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 633                 $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>').')');
 634             }
 635             $output .= html_writer::end_tag('tr');
 636         }
 637         $output .= html_writer::end_tag('table');
 638         $output .= html_writer::end_tag('div');
 639         return $output;
 640     }
 641
 642     /**
 643      * Displays upcoming events
 644      *
 645      * @param calendar_information $calendar
 646      * @param int $futuredays
 647      * @param int $maxevents
 648      * @return string
 649      */
 650     public function show_upcoming_events(calendar_information $calendar, $futuredays, $maxevents, moodle_url $returnurl = null) {
 651
 652         if ($returnurl === null) {
 653             $returnurl = $this->page->url;
 654         }
 655
 656         $events = calendar_get_upcoming($calendar->courses, $calendar->groups, $calendar->users, $futuredays, $maxevents);
 657
 658         $output  = html_writer::start_tag('div', array('class'=>'header'));
 659         if (calendar_user_can_add_event($calendar->course)) {
 660             $output .= $this->add_event_button($calendar->course->id);
 661         }
 662         $output .= html_writer::tag('label', get_string('upcomingevents', 'calendar'), array('for'=>'cal_course_flt_jump'));
 663         $output .= $this->course_filter_selector($returnurl);
 664         $output .= html_writer::end_tag('div');
 665
 666         if ($events) {
 667             $output .= html_writer::start_tag('div', array('class'=>'eventlist'));
 668             foreach ($events as $event) {
 669                 // Convert to calendar_event object so that we transform description
 670                 // accordingly
 671                 $event = new calendar_event($event);
 672                 $event->calendarcourseid = $calendar->courseid;
 673                 $output .= $this->event($event);
 674             }
 675             $output .= html_writer::end_tag('div');
 676         } else {
 677             $output .= $this->output->heading(get_string('noupcomingevents', 'calendar'));
 678         }
 679
 680         return $output;
 681     }
 682
 683     /**
 684      * Displays a course filter selector
 685      *
 686      * @param array $getvars
 687      * @return string
 688      */
 689     protected function course_filter_selector(moodle_url $returnurl, $label=null) {
 690         global $USER, $SESSION, $CFG;
 691
 692         if (!isloggedin() or isguestuser()) {
 693             return '';
 694         }
 695
 696         if (has_capability('moodle/calendar:manageentries', context_system::instance()) && !empty($CFG->calendar_adminseesall)) {
 697             $courses = get_courses('all', 'c.shortname','c.id,c.shortname');
 698         } else {
 699             $courses = enrol_get_my_courses();
 700         }
 701
 702         unset($courses[SITEID]);
 703
 704         $courseoptions = array();
 705         $courseoptions[SITEID] = get_string('fulllistofcourses');
 706         foreach ($courses as $course) {
 707             $coursecontext = context_course::instance($course->id);
 708             $courseoptions[$course->id] = format_string($course->shortname, true, array('context' => $coursecontext));
 709         }
 710
 711         if ($this->page->course->id !== SITEID) {
 712             $selected = $this->page->course->id;
 713         } else {
 714             $selected = '';
 715         }
 716         $select = new single_select(new moodle_url(CALENDAR_URL.'set.php', array('return' => base64_encode($returnurl->out(false)), 'var' => 'setcourse', 'sesskey'=>sesskey())), 'id', $courseoptions, $selected, null);
 717         $select->class = 'cal_courses_flt';
 718         if ($label !== null) {
 719             $select->set_label($label);
 720         } else {
 721             $select->set_label(get_string('listofcourses'), array('class' => 'accesshide'));
 722         }
 723         return $this->output->render($select);
 724     }
 725
 726     /**
 727      * Renders a table containing information about calendar subscriptions.
 728      *
 729      * @param int $courseid
 730      * @param array $subscriptions
 731      * @param string $importresults
 732      * @return string
 733      */
 734     public function subscription_details($courseid, $subscriptions, $importresults = '') {
 735         $table = new html_table();
 736         $table->head  = array(
 737             get_string('colcalendar', 'calendar'),
 738             get_string('collastupdated', 'calendar'),
 739             get_string('colpoll', 'calendar'),
 740             get_string('colactions', 'calendar')
 741         );
 742         $table->align = array('left', 'left', 'left', 'center');
 743         $table->width = '100%';
 744         $table->data  = array();
 745
 746         if (empty($subscriptions)) {
 747             $cell = new html_table_cell(get_string('nocalendarsubscriptions', 'calendar'));
 748             $cell->colspan = 4;
 749             $table->data[] = new html_table_row(array($cell));
 750         }
 751         $strnever = new lang_string('never', 'calendar');
 752         foreach ($subscriptions as $sub) {
 753             $label = $sub->name;
 754             if (!empty($sub->url)) {
 755                 $label = html_writer::link($sub->url, $label);
 756             }
 757             if (empty($sub->lastupdated)) {
 758                 $lastupdated = $strnever->out();
 759             } else {
 760                 $lastupdated = userdate($sub->lastupdated, get_string('strftimedatetimeshort', 'langconfig'));
 761             }
 762
 763             $cell = new html_table_cell($this->subscription_action_form($sub, $courseid));
 764             $cell->colspan = 2;
 765
 766             $table->data[] = new html_table_row(array(
 767                 new html_table_cell($label),
 768                 new html_table_cell($lastupdated),
 769                 $cell
 770             ));
 771         }
 772
 773         $out  = $this->output->box_start('generalbox calendarsubs');
 774
 775         $out .= $importresults;
 776         $out .= html_writer::table($table);
 777         $out .= $this->output->box_end();
 778         return $out;
 779     }
 780
 781     /**
 782      * Creates a form to perform actions on a given subscription.
 783      *
 784      * @param stdClass $subscription
 785      * @param int $courseid
 786      * @return string
 787      */
 788     protected function subscription_action_form($subscription, $courseid) {
 789         // Assemble form for the subscription row.
 790         $html = html_writer::start_tag('form', array('action' => new moodle_url('/calendar/managesubscriptions.php'), 'method' => 'post'));
 791         if (empty($subscription->url)) {
 792             // Don't update an iCal file, which has no URL.
 793             $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'pollinterval', 'value' => '0'));
 794         } else {
 795             // Assemble pollinterval control.
 796             $html .= html_writer::start_tag('div', array('style' => 'float:left;'));
 797             $html .= html_writer::start_tag('select', array('name' => 'pollinterval'));
 798             foreach (calendar_get_pollinterval_choices() as $k => $v) {
 799                 $attributes = array();
 800                 if ($k == $subscription->pollinterval) {
 801                     $attributes['selected'] = 'selected';
 802                 }
 803                 $html .= html_writer::tag('option', $v, $attributes);
 804             }
 805             $html .= html_writer::end_tag('select');
 806             $html .= html_writer::end_tag('div');
 807         }
 808         $html .= html_writer::start_tag('div', array('style' => 'float:right;'));
 809         $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'sesskey', 'value' => sesskey()));
 810         $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'course', 'value' => $courseid));
 811         $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'id', 'value' => $subscription->id));
 812         if (!empty($subscription->url)) {
 813             $html .= html_writer::empty_tag('input', array('type' => 'submit', 'name' => 'action', 'value' => get_string('update')));
 814         }
 815         $html .= html_writer::empty_tag('input', array('type' => 'submit', 'name' => 'action', 'value' => get_string('remove')));
 816         $html .= html_writer::end_tag('div');
 817         $html .= html_writer::end_tag('form');
 818         return $html;
 819     }
 820 }