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         global $CFG;
  47
  48         $output  = html_writer::tag('div', get_string('export', 'calendar'), array('class'=>'header'));
  49         $output .= html_writer::start_tag('fieldset');
  50         $output .= html_writer::tag('legend', get_string('commontasks', 'calendar'));
  51         $output .= html_writer::start_tag('form', array('action'=>new moodle_url('/calendar/export_execute.php'), 'method'=>'get'));
  52
  53         $output .= html_writer::tag('div', get_string('iwanttoexport', 'calendar'));
  54
  55         $output .= html_writer::start_tag('div', array('class'=>'indent'));
  56         $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_what', 'id'=>'pw_all', 'value'=>'all', 'checked'=>'checked'));
  57         $output .= html_writer::tag('label', get_string('eventsall', 'calendar'), array('for'=>'pw_all'));
  58         $output .= html_writer::empty_tag('br');
  59         $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_what', 'id'=>'pw_course', 'value'=>'courses'));
  60         $output .= html_writer::tag('label', get_string('eventsrelatedtocourses', 'calendar'), array('for'=>'pw_course'));
  61         $output .= html_writer::empty_tag('br');
  62         $output .= html_writer::end_tag('div');
  63
  64         $output .= html_writer::tag('div', get_string('for', 'calendar').':');
  65
  66         $output .= html_writer::start_tag('div', array('class'=>'indent'));
  67         if ($allowthisweek) {
  68             $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_wknow', 'value'=>'weeknow', 'checked'=>'checked'));
  69             $output .= html_writer::tag('label', get_string('weekthis', 'calendar'), array('for'=>'pt_wknow'));
  70             $output .= html_writer::empty_tag('br');
  71         }
  72         if ($allownextweek) {
  73             $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_wknext', 'value'=>'weeknext'));
  74             $output .= html_writer::tag('label', get_string('weeknext', 'calendar'), array('for'=>'pt_wknext'));
  75             $output .= html_writer::empty_tag('br');
  76         }
  77         $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_monnow', 'value'=>'monthnow'));
  78         $output .= html_writer::tag('label', get_string('monththis', 'calendar'), array('for'=>'pt_monnow'));
  79         $output .= html_writer::empty_tag('br');
  80         if ($allownextmonth) {
  81             $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_monnext', 'value'=>'monthnext'));
  82             $output .= html_writer::tag('label', get_string('monthnext', 'calendar'), array('for'=>'pt_monnext'));
  83             $output .= html_writer::empty_tag('br');
  84         }
  85         $output .= html_writer::empty_tag('input', array('type'=>'radio', 'name'=>'preset_time', 'id'=>'pt_recupc', 'value'=>'recentupcoming'));
  86         $output .= html_writer::tag('label', get_string('recentupcoming', 'calendar'), array('for'=>'pt_recupc'));
  87         $output .= html_writer::empty_tag('br');
  88
  89         if ($CFG->calendar_customexport) {
  90             $a = new stdClass();
  91             $now = time();
  92             $time = $now - $CFG->calendar_exportlookback * DAYSECS;
  93             $a->timestart = userdate($time, get_string('strftimedatefullshort', 'langconfig'));
  94             $time = $now + $CFG->calendar_exportlookahead * DAYSECS;
  95             $a->timeend = userdate($time, get_string('strftimedatefullshort', 'langconfig'));
  96             $output .= html_writer::empty_tag('input', array('type' => 'radio', 'name' => 'preset_time', 'id' => 'pt_custom', 'value' => 'custom'));
  97             $output .= html_writer::tag('label', get_string('customexport', 'calendar', $a), array('for' => 'pt_custom'));
  98             $output .= html_writer::empty_tag('br');
  99         }
 100
 101         $output .= html_writer::end_tag('div');
 102         $output .= html_writer::start_tag('div', array('class'=>'rightalign'));
 103         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_d', 'value'=>''));
 104         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_m', 'value'=>''));
 105         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_y', 'value'=>''));
 106         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'userid', 'value'=>$userid));
 107         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'authtoken', 'value'=>$authtoken));
 108
 109         $output .= html_writer::empty_tag('input', array('type'=>'submit', 'name' => 'generateurl', 'id'=>'generateurl', 'value'=>get_string('generateurlbutton', 'calendar')));
 110         $output .= html_writer::empty_tag('input', array('type'=>'submit', 'value'=>get_string('exportbutton', 'calendar')));
 111
 112         $output .= html_writer::end_tag('div');
 113
 114         $output .= html_writer::end_tag('form');
 115         $output .= html_writer::end_tag('fieldset');
 116
 117         $output .= html_writer::start_tag('div', array('id'=>'urlbox', 'style'=>'display:none;'));
 118         $output .= html_writer::tag('p', get_string('urlforical', 'calendar'));
 119         $output .= html_writer::tag('div', '', array('id'=>'url', 'style'=>'overflow:scroll;width:650px;'));
 120         $output .= html_writer::end_tag('div');
 121
 122         return $output;
 123     }
 124
 125     /**
 126      * Starts the standard layout for the page
 127      *
 128      * @return string
 129      */
 130     public function start_layout() {
 131         return html_writer::start_tag('div', array('class'=>'maincalendar'));
 132     }
 133
 134     /**
 135      * Creates the remainder of the layout
 136      *
 137      * @return string
 138      */
 139     public function complete_layout() {
 140         return html_writer::end_tag('div');
 141     }
 142
 143     /**
 144      * Produces the content for the filters block (pretend block)
 145      *
 146      * @param int $courseid
 147      * @param int $day
 148      * @param int $month
 149      * @param int $year
 150      * @param int $view
 151      * @param int $courses
 152      * @return string
 153      */
 154     public function fake_block_filters($courseid, $day, $month, $year, $view, $courses) {
 155         $returnurl = $this->page->url;
 156         $returnurl->param('course', $courseid);
 157         return html_writer::tag('div', calendar_filter_controls($returnurl), array('class'=>'calendar_filters filters'));
 158     }
 159
 160     /**
 161      * Produces the content for the three months block (pretend block)
 162      *
 163      * This includes the previous month, the current month, and the next month
 164      *
 165      * @param calendar_information $calendar
 166      * @return string
 167      */
 168     public function fake_block_threemonths(calendar_information $calendar) {
 169
 170         list($prevmon, $prevyr) = calendar_sub_month($calendar->month, $calendar->year);
 171         list($nextmon, $nextyr) = calendar_add_month($calendar->month, $calendar->year);
 172
 173         $content  = html_writer::start_tag('div', array('class'=>'minicalendarblock'));
 174         $content .= calendar_get_mini( $calendar->courses, $calendar->groups, $calendar->users, $prevmon, $prevyr, 'display', $calendar->courseid);
 175         $content .= html_writer::end_tag('div');
 176         $content .= html_writer::start_tag('div', array('class'=>'minicalendarblock'));
 177         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, $calendar->month, $calendar->year, 'display', $calendar->courseid);
 178         $content .= html_writer::end_tag('div');
 179         $content .= html_writer::start_tag('div', array('class'=>'minicalendarblock'));
 180         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, $nextmon, $nextyr, 'display', $calendar->courseid);
 181         $content .= html_writer::end_tag('div');
 182         return $content;
 183     }
 184
 185     /**
 186      * Adds a pretent calendar block
 187      *
 188      * @param block_contents $bc
 189      * @param mixed $pos BLOCK_POS_RIGHT | BLOCK_POS_LEFT
 190      */
 191     public function add_pretend_calendar_block(block_contents $bc, $pos=BLOCK_POS_RIGHT) {
 192         $this->page->blocks->add_fake_block($bc, $pos);
 193     }
 194
 195     /**
 196      * Creates a button to add a new event
 197      *
 198      * @param int $courseid
 199      * @param int $day
 200      * @param int $month
 201      * @param int $year
 202      * @return string
 203      */
 204     protected function add_event_button($courseid, $day=null, $month=null, $year=null) {
 205         $output = html_writer::start_tag('div', array('class'=>'buttons'));
 206         $output .= html_writer::start_tag('form', array('action'=>CALENDAR_URL.'event.php', 'method'=>'get'));
 207         $output .= html_writer::start_tag('div');
 208         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'action', 'value'=>'new'));
 209         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'course', 'value'=>$courseid));
 210         if ($day !== null) {
 211             $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_d', 'value'=>$day));
 212         }
 213         if ($month !== null) {
 214             $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_m', 'value'=>$month));
 215         }
 216         if ($year !== null) {
 217             $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'cal_y', 'value'=>$year));
 218         }
 219         $output .= html_writer::empty_tag('input', array('type'=>'submit', 'value'=>get_string('newevent', 'calendar')));
 220         $output .= html_writer::end_tag('div');
 221         $output .= html_writer::end_tag('form');
 222         $output .= html_writer::end_tag('div');
 223         return $output;
 224     }
 225
 226     /**
 227      * Displays the calendar for a single day
 228      *
 229      * @param calendar_information $calendar
 230      * @return string
 231      */
 232     public function show_day(calendar_information $calendar, moodle_url $returnurl = null) {
 233
 234         if ($returnurl === null) {
 235             $returnurl = $this->page->url;
 236         }
 237
 238         $calendar->checkdate();
 239         $events = calendar_get_upcoming($calendar->courses, $calendar->groups, $calendar->users, 1, 100, $calendar->timestamp_today());
 240
 241         $output  = html_writer::start_tag('div', array('class'=>'header'));
 242         if (calendar_user_can_add_event($calendar->course)) {
 243             $output .= $this->add_event_button($calendar->course->id, $calendar->day, $calendar->month, $calendar->year);
 244         }
 245         //$output .= html_writer::tag('label', get_string('dayview', 'calendar'), array('for'=>'cal_course_flt_jump'));
 246         $output .= $this->course_filter_selector($returnurl, get_string('dayview', 'calendar'));
 247         $output .= html_writer::end_tag('div');
 248         // Controls
 249         $output .= html_writer::tag('div', calendar_top_controls('day', array('id' => $calendar->courseid, 'd' => $calendar->day, 'm' => $calendar->month, 'y' => $calendar->year)), array('class'=>'controls'));
 250
 251         if (empty($events)) {
 252             // There is nothing to display today.
 253             $output .= $this->output->heading(get_string('daywithnoevents', 'calendar'), 3);
 254         } else {
 255             $output .= html_writer::start_tag('div', array('class'=>'eventlist'));
 256             $underway = array();
 257             // First, print details about events that start today
 258             foreach ($events as $event) {
 259                 $event = new calendar_event($event);
 260                 $event->calendarcourseid = $calendar->courseid;
 261                 if ($event->timestart >= $calendar->timestamp_today() && $event->timestart <= $calendar->timestamp_tomorrow()-1) {  // Print it now
 262                     $event->time = calendar_format_event_time($event, time(), null, false, $calendar->timestamp_today());
 263                     $output .= $this->event($event);
 264                 } else {                                                                 // Save this for later
 265                     $underway[] = $event;
 266                 }
 267             }
 268
 269             // Then, show a list of all events that just span this day
 270             if (!empty($underway)) {
 271                 $output .= $this->output->heading(get_string('spanningevents', 'calendar'), 3);
 272                 foreach ($underway as $event) {
 273                     $event->time = calendar_format_event_time($event, time(), null, false, $calendar->timestamp_today());
 274                     $output .= $this->event($event);
 275                 }
 276             }
 277
 278             $output .= html_writer::end_tag('div');
 279         }
 280
 281         return $output;
 282     }
 283
 284     /**
 285      * Displays an event
 286      *
 287      * @param calendar_event $event
 288      * @param bool $showactions
 289      * @return string
 290      */
 291     public function event(calendar_event $event, $showactions=true) {
 292         global $CFG;
 293
 294         $event = calendar_add_event_metadata($event);
 295
 296         $anchor  = html_writer::tag('a', '', array('name'=>'event_'.$event->id));
 297
 298         $table = new html_table();
 299         $table->attributes = array('class'=>'event', 'cellspacing'=>'0');
 300         $table->data = array(
 301             0 => new html_table_row(),
 302             1 => new html_table_row(),
 303         );
 304
 305         if (!empty($event->icon)) {
 306             $table->data[0]->cells[0] = new html_table_cell($anchor.$event->icon);
 307         } else {
 308             $table->data[0]->cells[0] = new html_table_cell($anchor.$this->output->spacer(array('height'=>16, 'width'=>16, 'br'=>true)));
 309         }
 310         $table->data[0]->cells[0]->attributes['class'] .= ' picture';
 311
 312         $table->data[0]->cells[1] = new html_table_cell();
 313         $table->data[0]->cells[1]->attributes['class'] .= ' topic';
 314         if (!empty($event->referer)) {
 315             $table->data[0]->cells[1]->text .= html_writer::tag('div', $event->referer, array('class'=>'referer'));
 316         } else {
 317             $table->data[0]->cells[1]->text .= html_writer::tag('div', $event->name, array('class'=>'name'));
 318         }
 319         if (!empty($event->courselink)) {
 320             $table->data[0]->cells[1]->text .= html_writer::tag('div', $event->courselink, array('class'=>'course'));
 321         }
 322         // Show subscription source if needed.
 323         if (!empty($event->subscription) && $CFG->calendar_showicalsource) {
 324             if (!empty($event->subscription->url)) {
 325                 $source = html_writer::link($event->subscription->url, get_string('subsource', 'calendar', $event->subscription));
 326             } else {
 327                 // File based ical.
 328                 $source = get_string('subsource', 'calendar', $event->subscription);
 329             }
 330             $table->data[0]->cells[1]->text .= html_writer::tag('div', $source, array('class' => 'subscription'));
 331         }
 332         if (!empty($event->time)) {
 333             $table->data[0]->cells[1]->text .= html_writer::tag('span', $event->time, array('class'=>'date'));
 334         } else {
 335             $table->data[0]->cells[1]->text .= html_writer::tag('span', calendar_time_representation($event->timestart), array('class'=>'date'));
 336         }
 337
 338         $table->data[1]->cells[0] = new html_table_cell('&nbsp;');
 339         $table->data[1]->cells[0]->attributes['class'] .= 'side';
 340
 341         $table->data[1]->cells[1] = new html_table_cell($event->description);
 342         $table->data[1]->cells[1]->attributes['class'] .= ' description';
 343         if (isset($event->cssclass)) {
 344             $table->data[1]->cells[1]->attributes['class'] .= ' '.$event->cssclass;
 345         }
 346
 347         if (calendar_edit_event_allowed($event) && $showactions) {
 348             if (empty($event->cmid)) {
 349                 $editlink = new moodle_url(CALENDAR_URL.'event.php', array('action'=>'edit', 'id'=>$event->id));
 350                 $deletelink = new moodle_url(CALENDAR_URL.'delete.php', array('id'=>$event->id));
 351                 if (!empty($event->calendarcourseid)) {
 352                     $editlink->param('course', $event->calendarcourseid);
 353                     $deletelink->param('course', $event->calendarcourseid);
 354                 }
 355             } else {
 356                 $editlink = new moodle_url('/course/mod.php', array('update'=>$event->cmid, 'return'=>true, 'sesskey'=>sesskey()));
 357                 $deletelink = null;
 358             }
 359
 360             $commands  = html_writer::start_tag('div', array('class'=>'commands'));
 361             $commands .= html_writer::start_tag('a', array('href'=>$editlink));
 362             $commands .= html_writer::empty_tag('img', array('src'=>$this->output->pix_url('t/edit'), 'alt'=>get_string('tt_editevent', 'calendar'), 'title'=>get_string('tt_editevent', 'calendar')));
 363             $commands .= html_writer::end_tag('a');
 364             if ($deletelink != null) {
 365                 $commands .= html_writer::start_tag('a', array('href'=>$deletelink));
 366                 $commands .= html_writer::empty_tag('img', array('src'=>$this->output->pix_url('t/delete'), 'alt'=>get_string('tt_deleteevent', 'calendar'), 'title'=>get_string('tt_deleteevent', 'calendar')));
 367                 $commands .= html_writer::end_tag('a');
 368             }
 369             $commands .= html_writer::end_tag('div');
 370             $table->data[1]->cells[1]->text .= $commands;
 371         }
 372         return html_writer::table($table);
 373     }
 374
 375     /**
 376      * Displays a month in detail
 377      *
 378      * @param calendar_information $calendar
 379      * @return string
 380      */
 381     public function show_month_detailed(calendar_information $calendar, moodle_url $returnurl  = null) {
 382         global $CFG;
 383
 384         if (empty($returnurl)) {
 385             $returnurl = $this->page->url;
 386         }
 387
 388         $date = usergetdate(time());
 389
 390         $display = new stdClass;
 391         $display->minwday = get_user_preferences('calendar_startwday', calendar_get_starting_weekday());
 392         $display->maxwday = $display->minwday + 6;
 393         $display->thismonth = ($date['mon'] == $calendar->month);
 394         $display->maxdays = calendar_days_in_month($calendar->month, $calendar->year);
 395
 396         $startwday = 0;
 397         if (get_user_timezone_offset() < 99) {
 398             // We 'll keep these values as GMT here, and offset them when the time comes to query the db
 399             $display->tstart = gmmktime(0, 0, 0, $calendar->month, 1, $calendar->year); // This is GMT
 400             $display->tend = gmmktime(23, 59, 59, $calendar->month, $display->maxdays, $calendar->year); // GMT
 401             $startwday = gmdate('w', $display->tstart); // $display->tstart is already GMT, so don't use date(): messes with server's TZ
 402         } else {
 403             // no timezone info specified
 404             $display->tstart = mktime(0, 0, 0, $calendar->month, 1, $calendar->year);
 405             $display->tend = mktime(23, 59, 59, $calendar->month, $display->maxdays, $calendar->year);
 406             $startwday = date('w', $display->tstart); // $display->tstart not necessarily GMT, so use date()
 407         }
 408
 409         // Align the starting weekday to fall in our display range
 410         if ($startwday < $display->minwday) {
 411             $startwday += 7;
 412         }
 413
 414         // Get events from database
 415         $events = calendar_get_events(usertime($display->tstart), usertime($display->tend), $calendar->users, $calendar->groups, $calendar->courses);
 416         if (!empty($events)) {
 417             foreach($events as $eventid => $event) {
 418                 $event = new calendar_event($event);
 419                 if (!empty($event->modulename)) {
 420                     $cm = get_coursemodule_from_instance($event->modulename, $event->instance);
 421                     if (!groups_course_module_visible($cm)) {
 422                         unset($events[$eventid]);
 423                     }
 424                 }
 425             }
 426         }
 427
 428         // Extract information: events vs. time
 429         calendar_events_by_day($events, $calendar->month, $calendar->year, $eventsbyday, $durationbyday, $typesbyday, $calendar->courses);
 430
 431         $output  = html_writer::start_tag('div', array('class'=>'header'));
 432         if (calendar_user_can_add_event($calendar->course)) {
 433             $output .= $this->add_event_button($calendar->course->id, null, $calendar->month, $calendar->year);
 434         }
 435         $output .= get_string('detailedmonthview', 'calendar').': '.$this->course_filter_selector($returnurl);
 436         $output .= html_writer::end_tag('div', array('class'=>'header'));
 437         // Controls
 438         $output .= html_writer::tag('div', calendar_top_controls('month', array('id' => $calendar->courseid, 'm' => $calendar->month, 'y' => $calendar->year)), array('class'=>'controls'));
 439
 440         $days = calendar_get_days();
 441
 442         $table = new html_table();
 443         $table->attributes = array('class'=>'calendarmonth calendartable');
 444         $time = make_timestamp($calendar->year, $calendar->month);
 445         $table->summary = get_string('calendarheading', 'calendar', userdate($time, get_string('strftimemonthyear')));
 446         $table->data = array();
 447
 448         $header = new html_table_row();
 449         $header->attributes = array('class'=>'weekdays');
 450         $header->cells = array();
 451         for($i = $display->minwday; $i <= $display->maxwday; ++$i) {
 452             // This uses the % operator to get the correct weekday no matter what shift we have
 453             // applied to the $display->minwday : $display->maxwday range from the default 0 : 6
 454             $cell = new html_table_cell(get_string($days[$i % 7], 'calendar'));
 455             $cell->header = true;
 456             $header->cells[] = $cell;
 457         }
 458
 459         // For the table display. $week is the row; $dayweek is the column.
 460         $week = 1;
 461         $dayweek = $startwday;
 462
 463         // Create an array of all the week days.
 464         $wdays = array(0 => '<strong>'. get_string('sun', 'calendar'). '</strong>',
 465                        1 => '<strong>'. get_string('mon', 'calendar'). '</strong>',
 466                        2 => '<strong>'. get_string('tue', 'calendar'). '</strong>',
 467                        3 => '<strong>'. get_string('wed', 'calendar'). '</strong>',
 468                        4 => '<strong>'. get_string('thu', 'calendar'). '</strong>',
 469                        5 => '<strong>'. get_string('fri', 'calendar'). '</strong>',
 470                        6 => '<strong>'. get_string('sat', 'calendar'). '</strong>');
 471
 472         // Loop only if the day offset is greater than 0.
 473         // This loop involves shifting the days around until the desired start day
 474         // is at the start of the array.
 475         $daycount = 0;
 476         while ($display->minwday > $daycount++) {
 477             $wdays_end = array_shift($wdays);
 478             array_push($wdays, $wdays_end);
 479         }
 480
 481         // Now we set the (modified) array to the table header to be displayed.
 482         $table->head = $wdays;
 483
 484         $row = new html_table_row(array());
 485
 486         // Paddding (the first week may have blank days in the beginning)
 487         for($i = $display->minwday; $i < $startwday; ++$i) {
 488             $cell = new html_table_cell('&nbsp;');
 489             $cell->attributes = array('class'=>'nottoday dayblank');
 490             $row->cells[] = $cell;
 491         }
 492
 493         // Now display all the calendar
 494         $weekend = CALENDAR_DEFAULT_WEEKEND;
 495         if (isset($CFG->calendar_weekend)) {
 496             $weekend = intval($CFG->calendar_weekend);
 497         }
 498
 499         for ($calendar->day = 1; $calendar->day <= $display->maxdays; ++$calendar->day, ++$dayweek) {
 500             if($dayweek > $display->maxwday) {
 501                 // We need to change week (table row)
 502                 $table->data[] = $row;
 503                 $row = new html_table_row(array());
 504                 $dayweek = $display->minwday;
 505                 ++$week;
 506             }
 507
 508             // Reset vars
 509             $cell = new html_table_cell();
 510             $dayhref = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', array('view'=>'day', 'course'=>$calendar->courseid)), $calendar->day, $calendar->month, $calendar->year);
 511
 512             $cellclasses = array();
 513
 514             if ($weekend & (1 << ($dayweek % 7))) {
 515                 // Weekend. This is true no matter what the exact range is.
 516                 $cellclasses[] = 'weekend';
 517             }
 518
 519             // Special visual fx if an event is defined
 520             if (isset($eventsbyday[$calendar->day])) {
 521                 if(count($eventsbyday[$calendar->day]) == 1) {
 522                     $title = get_string('oneevent', 'calendar');
 523                 } else {
 524                     $title = get_string('manyevents', 'calendar', count($eventsbyday[$calendar->day]));
 525                 }
 526                 $cell->text = html_writer::tag('div', html_writer::link($dayhref, $calendar->day, array('title'=>$title)), array('class'=>'day'));
 527             } else {
 528                 $cell->text = html_writer::tag('div', $calendar->day, array('class'=>'day'));
 529             }
 530
 531             // Special visual fx if an event spans many days
 532             $durationclass = false;
 533             if (isset($typesbyday[$calendar->day]['durationglobal'])) {
 534                 $durationclass = 'duration_global';
 535             } else if (isset($typesbyday[$calendar->day]['durationcourse'])) {
 536                 $durationclass = 'duration_course';
 537             } else if (isset($typesbyday[$calendar->day]['durationgroup'])) {
 538                 $durationclass = 'duration_group';
 539             } else if (isset($typesbyday[$calendar->day]['durationuser'])) {
 540                 $durationclass = 'duration_user';
 541             }
 542             if ($durationclass) {
 543                 $cellclasses[] = 'duration';
 544                 $cellclasses[] = $durationclass;
 545             }
 546
 547             // Special visual fx for today
 548             if ($display->thismonth && $calendar->day == $date['mday']) {
 549                 $cellclasses[] = 'day today';
 550             } else {
 551                 $cellclasses[] = 'day nottoday';
 552             }
 553             $cell->attributes = array('class'=>join(' ',$cellclasses));
 554
 555             if (isset($eventsbyday[$calendar->day])) {
 556                 $cell->text .= html_writer::start_tag('ul', array('class'=>'events-new'));
 557                 foreach($eventsbyday[$calendar->day] as $eventindex) {
 558                     // If event has a class set then add it to the event <li> tag
 559                     $attributes = array();
 560                     if (!empty($events[$eventindex]->class)) {
 561                         $attributes['class'] = $events[$eventindex]->class;
 562                     }
 563                     $dayhref->set_anchor('event_'.$events[$eventindex]->id);
 564                     $link = html_writer::link($dayhref, format_string($events[$eventindex]->name, true));
 565                     $cell->text .= html_writer::tag('li', $link, $attributes);
 566                 }
 567                 $cell->text .= html_writer::end_tag('ul');
 568             }
 569             if (isset($durationbyday[$calendar->day])) {
 570                 $cell->text .= html_writer::start_tag('ul', array('class'=>'events-underway'));
 571                 foreach($durationbyday[$calendar->day] as $eventindex) {
 572                     $cell->text .= html_writer::tag('li', '['.format_string($events[$eventindex]->name,true).']', array('class'=>'events-underway'));
 573                 }
 574                 $cell->text .= html_writer::end_tag('ul');
 575             }
 576             $row->cells[] = $cell;
 577         }
 578
 579         // Paddding (the last week may have blank days at the end)
 580         for($i = $dayweek; $i <= $display->maxwday; ++$i) {
 581             $cell = new html_table_cell('&nbsp;');
 582             $cell->attributes = array('class'=>'nottoday dayblank');
 583             $row->cells[] = $cell;
 584         }
 585         $table->data[] = $row;
 586         $output .= html_writer::table($table);
 587
 588         return $output;
 589     }
 590
 591     /**
 592      * Displays a filter selection table
 593      *
 594      * @param calendar_information $calendar
 595      * @return string
 596      * @deprecated since Moodle 2.4 MDL-32309
 597      * @see calendar_filter_controls()
 598      */
 599     protected function filter_selection_table(calendar_information $calendar, moodle_url $returnurl = null) {
 600         global $SESSION;
 601         debugging('Method core_calendar_renderer::filter_selection_table() is deprecated, please use '.
 602                 'calendar_filter_controls() instead', DEBUG_DEVELOPER);
 603
 604         if ($returnurl === null) {
 605             $returnurl = $this->page->url;
 606         }
 607
 608         $output  = html_writer::start_tag('div', array('class'=>'filters'));
 609         $output .= html_writer::start_tag('table');
 610         $output .= html_writer::start_tag('tr');
 611
 612         // Global events
 613         $link = new moodle_url(CALENDAR_URL.'set.php', array('var' => 'showglobal', 'return' => base64_encode($returnurl->out(false)), 'sesskey'=>sesskey()));
 614         $strglobalevents = get_string('globalevents', 'calendar');
 615         if (calendar_show_event_type(CALENDAR_EVENT_GLOBAL)) {
 616             $output .= html_writer::tag('td', '', array('class'=>'calendar_event_global', 'style'=>'width:8px;'));
 617             $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>').')');
 618         } else {
 619             $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 620             $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>').')');
 621         }
 622
 623         // Course events
 624         $link = new moodle_url(CALENDAR_URL.'set.php', array('var'=>'showcourses', 'return' => base64_encode($returnurl->out(false)), 'sesskey'=>sesskey()));
 625         $strcourseevents = get_string('courseevents', 'calendar');
 626         if (calendar_show_event_type(CALENDAR_EVENT_COURSE)) {
 627             $output .= html_writer::tag('td', '', array('class'=>'calendar_event_course', 'style'=>'width:8px;'));
 628             $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>').')');
 629         } else {
 630             $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 631             $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>').')');
 632         }
 633         $output .= html_writer::end_tag('tr');
 634
 635         if(isloggedin() && !isguestuser()) {
 636             $output .= html_writer::start_tag('tr');
 637             // Group events
 638             $link = new moodle_url(CALENDAR_URL.'set.php', array('var'=>'showgroups', 'return' => base64_encode($returnurl->out(false)), 'sesskey'=>sesskey()));
 639             $strgroupevents = get_string('groupevents', 'calendar');
 640             if (calendar_show_event_type(CALENDAR_EVENT_GROUP)) {
 641                 $output .= html_writer::tag('td', '', array('class'=>'calendar_event_group', 'style'=>'width:8px;'));
 642                 $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>').')');
 643             } else {
 644                 $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 645                 $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>').')');
 646             }
 647             // User events
 648             $link = new moodle_url(CALENDAR_URL.'set.php', array('var'=>'showuser', 'return' => base64_encode($returnurl->out(false)), 'sesskey'=>sesskey()));
 649             $struserevents = get_string('userevents', 'calendar');
 650             if (calendar_show_event_type(CALENDAR_EVENT_USER)) {
 651                 $output .= html_writer::tag('td', '', array('class'=>'calendar_event_user', 'style'=>'width:8px;'));
 652                 $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>').')');
 653             } else {
 654                 $output .= html_writer::tag('td', '', array('style'=>'width:8px;'));
 655                 $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>').')');
 656             }
 657             $output .= html_writer::end_tag('tr');
 658         }
 659         $output .= html_writer::end_tag('table');
 660         $output .= html_writer::end_tag('div');
 661         return $output;
 662     }
 663
 664     /**
 665      * Displays upcoming events
 666      *
 667      * @param calendar_information $calendar
 668      * @param int $futuredays
 669      * @param int $maxevents
 670      * @return string
 671      */
 672     public function show_upcoming_events(calendar_information $calendar, $futuredays, $maxevents, moodle_url $returnurl = null) {
 673
 674         if ($returnurl === null) {
 675             $returnurl = $this->page->url;
 676         }
 677
 678         $events = calendar_get_upcoming($calendar->courses, $calendar->groups, $calendar->users, $futuredays, $maxevents);
 679
 680         $output  = html_writer::start_tag('div', array('class'=>'header'));
 681         if (calendar_user_can_add_event($calendar->course)) {
 682             $output .= $this->add_event_button($calendar->course->id);
 683         }
 684         $output .= html_writer::tag('label', get_string('upcomingevents', 'calendar'), array('for'=>'cal_course_flt_jump'));
 685         $output .= $this->course_filter_selector($returnurl);
 686         $output .= html_writer::end_tag('div');
 687
 688         if ($events) {
 689             $output .= html_writer::start_tag('div', array('class'=>'eventlist'));
 690             foreach ($events as $event) {
 691                 // Convert to calendar_event object so that we transform description
 692                 // accordingly
 693                 $event = new calendar_event($event);
 694                 $event->calendarcourseid = $calendar->courseid;
 695                 $output .= $this->event($event);
 696             }
 697             $output .= html_writer::end_tag('div');
 698         } else {
 699             $output .= $this->output->heading(get_string('noupcomingevents', 'calendar'));
 700         }
 701
 702         return $output;
 703     }
 704
 705     /**
 706      * Displays a course filter selector
 707      *
 708      * @param array $getvars
 709      * @return string
 710      */
 711     protected function course_filter_selector(moodle_url $returnurl, $label=null) {
 712         global $USER, $SESSION, $CFG;
 713
 714         if (!isloggedin() or isguestuser()) {
 715             return '';
 716         }
 717
 718         if (has_capability('moodle/calendar:manageentries', context_system::instance()) && !empty($CFG->calendar_adminseesall)) {
 719             $courses = get_courses('all', 'c.shortname','c.id,c.shortname');
 720         } else {
 721             $courses = enrol_get_my_courses();
 722         }
 723
 724         unset($courses[SITEID]);
 725
 726         $courseoptions = array();
 727         $courseoptions[SITEID] = get_string('fulllistofcourses');
 728         foreach ($courses as $course) {
 729             $coursecontext = context_course::instance($course->id);
 730             $courseoptions[$course->id] = format_string($course->shortname, true, array('context' => $coursecontext));
 731         }
 732
 733         if ($this->page->course->id !== SITEID) {
 734             $selected = $this->page->course->id;
 735         } else {
 736             $selected = '';
 737         }
 738         $select = new single_select(new moodle_url(CALENDAR_URL.'set.php', array('return' => base64_encode($returnurl->out(false)), 'var' => 'setcourse', 'sesskey'=>sesskey())), 'id', $courseoptions, $selected, null);
 739         $select->class = 'cal_courses_flt';
 740         if ($label !== null) {
 741             $select->set_label($label);
 742         } else {
 743             $select->set_label(get_string('listofcourses'), array('class' => 'accesshide'));
 744         }
 745         return $this->output->render($select);
 746     }
 747
 748     /**
 749      * Renders a table containing information about calendar subscriptions.
 750      *
 751      * @param int $courseid
 752      * @param array $subscriptions
 753      * @param string $importresults
 754      * @return string
 755      */
 756     public function subscription_details($courseid, $subscriptions, $importresults = '') {
 757         $table = new html_table();
 758         $table->head  = array(
 759             get_string('colcalendar', 'calendar'),
 760             get_string('collastupdated', 'calendar'),
 761             get_string('eventkind', 'calendar'),
 762             get_string('colpoll', 'calendar'),
 763             get_string('colactions', 'calendar')
 764         );
 765         $table->align = array('left', 'left', 'left', 'center');
 766         $table->width = '100%';
 767         $table->data  = array();
 768
 769         if (empty($subscriptions)) {
 770             $cell = new html_table_cell(get_string('nocalendarsubscriptions', 'calendar'));
 771             $cell->colspan = 4;
 772             $table->data[] = new html_table_row(array($cell));
 773         }
 774         $strnever = new lang_string('never', 'calendar');
 775         foreach ($subscriptions as $sub) {
 776             $label = $sub->name;
 777             if (!empty($sub->url)) {
 778                 $label = html_writer::link($sub->url, $label);
 779             }
 780             if (empty($sub->lastupdated)) {
 781                 $lastupdated = $strnever->out();
 782             } else {
 783                 $lastupdated = userdate($sub->lastupdated, get_string('strftimedatetimeshort', 'langconfig'));
 784             }
 785
 786             $cell = new html_table_cell($this->subscription_action_form($sub, $courseid));
 787             $cell->colspan = 2;
 788             $type = $sub->eventtype . 'events';
 789
 790             $table->data[] = new html_table_row(array(
 791                 new html_table_cell($label),
 792                 new html_table_cell($lastupdated),
 793                 new html_table_cell(get_string($type, 'calendar')),
 794                 $cell
 795             ));
 796         }
 797
 798         $out  = $this->output->box_start('generalbox calendarsubs');
 799
 800         $out .= $importresults;
 801         $out .= html_writer::table($table);
 802         $out .= $this->output->box_end();
 803         return $out;
 804     }
 805
 806     /**
 807      * Creates a form to perform actions on a given subscription.
 808      *
 809      * @param stdClass $subscription
 810      * @param int $courseid
 811      * @return string
 812      */
 813     protected function subscription_action_form($subscription, $courseid) {
 814         // Assemble form for the subscription row.
 815         $html = html_writer::start_tag('form', array('action' => new moodle_url('/calendar/managesubscriptions.php'), 'method' => 'post'));
 816         if (empty($subscription->url)) {
 817             // Don't update an iCal file, which has no URL.
 818             $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'pollinterval', 'value' => '0'));
 819         } else {
 820             // Assemble pollinterval control.
 821             $html .= html_writer::start_tag('div', array('style' => 'float:left;'));
 822             $html .= html_writer::start_tag('select', array('name' => 'pollinterval'));
 823             foreach (calendar_get_pollinterval_choices() as $k => $v) {
 824                 $attributes = array();
 825                 if ($k == $subscription->pollinterval) {
 826                     $attributes['selected'] = 'selected';
 827                 }
 828                 $attributes['value'] = $k;
 829                 $html .= html_writer::tag('option', $v, $attributes);
 830             }
 831             $html .= html_writer::end_tag('select');
 832             $html .= html_writer::end_tag('div');
 833         }
 834         $html .= html_writer::start_tag('div', array('style' => 'float:right;'));
 835         $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'sesskey', 'value' => sesskey()));
 836         $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'course', 'value' => $courseid));
 837         $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'id', 'value' => $subscription->id));
 838         if (!empty($subscription->url)) {
 839             $html .= html_writer::empty_tag('input', array('type' => 'submit', 'name' => 'action', 'value' => get_string('update')));
 840         }
 841         $html .= html_writer::empty_tag('input', array('type' => 'submit', 'name' => 'action', 'value' => get_string('remove')));
 842         $html .= html_writer::end_tag('div');
 843         $html .= html_writer::end_tag('form');
 844         return $html;
 845     }
 846 }