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      * Starts the standard layout for the page
  37      *
  38      * @return string
  39      */
  40     public function start_layout() {
  41         return html_writer::start_tag('div', array('class'=>'maincalendar'));
  42     }
  43
  44     /**
  45      * Creates the remainder of the layout
  46      *
  47      * @return string
  48      */
  49     public function complete_layout() {
  50         return html_writer::end_tag('div');
  51     }
  52
  53     /**
  54      * Produces the content for the filters block (pretend block)
  55      *
  56      * @param int $courseid
  57      * @param int $day
  58      * @param int $month
  59      * @param int $year
  60      * @param int $view
  61      * @param int $courses
  62      * @return string
  63      */
  64     public function fake_block_filters($courseid, $day, $month, $year, $view, $courses) {
  65         $returnurl = $this->page->url;
  66         $returnurl->param('course', $courseid);
  67         return html_writer::tag('div', calendar_filter_controls($returnurl), array('class'=>'calendar_filters filters'));
  68     }
  69
  70     /**
  71      * Produces the content for the three months block (pretend block)
  72      *
  73      * This includes the previous month, the current month, and the next month
  74      *
  75      * @param calendar_information $calendar
  76      * @return string
  77      */
  78     public function fake_block_threemonths(calendar_information $calendar) {
  79         // Get the calendar type we are using.
  80         $calendartype = \core_calendar\type_factory::get_calendar_instance();
  81
  82         $date = $calendartype->timestamp_to_date_array($calendar->time);
  83
  84         $prevmonth = calendar_sub_month($date['mon'], $date['year']);
  85         $prevmonthtime = $calendartype->convert_to_gregorian($prevmonth[1], $prevmonth[0], 1);
  86         $prevmonthtime = make_timestamp($prevmonthtime['year'], $prevmonthtime['month'], $prevmonthtime['day'],
  87             $prevmonthtime['hour'], $prevmonthtime['minute']);
  88
  89         $nextmonth = calendar_add_month($date['mon'], $date['year']);
  90         $nextmonthtime = $calendartype->convert_to_gregorian($nextmonth[1], $nextmonth[0], 1);
  91         $nextmonthtime = make_timestamp($nextmonthtime['year'], $nextmonthtime['month'], $nextmonthtime['day'],
  92             $nextmonthtime['hour'], $nextmonthtime['minute']);
  93
  94         $content  = html_writer::start_tag('div', array('class' => 'minicalendarblock'));
  95         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, false, false, 'display', $calendar->courseid, $prevmonthtime);
  96         $content .= html_writer::end_tag('div');
  97         $content .= html_writer::start_tag('div', array('class' => 'minicalendarblock'));
  98         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, false, false, 'display', $calendar->courseid, $calendar->time);
  99         $content .= html_writer::end_tag('div');
 100         $content .= html_writer::start_tag('div', array('class' => 'minicalendarblock'));
 101         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, false, false, 'display', $calendar->courseid, $nextmonthtime);
 102         $content .= html_writer::end_tag('div');
 103         return $content;
 104     }
 105
 106     /**
 107      * Adds a pretent calendar block
 108      *
 109      * @param block_contents $bc
 110      * @param mixed $pos BLOCK_POS_RIGHT | BLOCK_POS_LEFT
 111      */
 112     public function add_pretend_calendar_block(block_contents $bc, $pos=BLOCK_POS_RIGHT) {
 113         $this->page->blocks->add_fake_block($bc, $pos);
 114     }
 115
 116     /**
 117      * Creates a button to add a new event
 118      *
 119      * @param int $courseid
 120      * @param int $day
 121      * @param int $month
 122      * @param int $year
 123      * @param int $time the unixtime, used for multiple calendar support. The values $day,
 124      *     $month and $year are kept for backwards compatibility.
 125      * @return string
 126      */
 127     protected function add_event_button($courseid, $day = null, $month = null, $year = null, $time = null) {
 128         // If a day, month and year were passed then convert it to a timestamp. If these were passed
 129         // then we can assume the day, month and year are passed as Gregorian, as no where in core
 130         // should we be passing these values rather than the time. This is done for BC.
 131         if (!empty($day) && !empty($month) && !empty($year)) {
 132             if (checkdate($month, $day, $year)) {
 133                 $time = make_timestamp($year, $month, $day);
 134             } else {
 135                 $time = time();
 136             }
 137         } else if (empty($time)) {
 138             $time = time();
 139         }
 140
 141         $output = html_writer::start_tag('div', array('class'=>'buttons'));
 142         $output .= html_writer::start_tag('form', array('action' => CALENDAR_URL . 'event.php', 'method' => 'get'));
 143         $output .= html_writer::start_tag('div');
 144         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name' => 'action', 'value' => 'new'));
 145         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name' => 'course', 'value' => $courseid));
 146         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name' => 'time', 'value' => $time));
 147         $output .= html_writer::empty_tag('input', array('type'=>'submit', 'value' => get_string('newevent', 'calendar')));
 148         $output .= html_writer::end_tag('div');
 149         $output .= html_writer::end_tag('form');
 150         $output .= html_writer::end_tag('div');
 151         return $output;
 152     }
 153
 154     /**
 155      * Displays the calendar for a single day
 156      *
 157      * @param calendar_information $calendar
 158      * @return string
 159      */
 160     public function show_day(calendar_information $calendar, moodle_url $returnurl = null) {
 161
 162         if ($returnurl === null) {
 163             $returnurl = $this->page->url;
 164         }
 165
 166         $events = calendar_get_upcoming($calendar->courses, $calendar->groups, $calendar->users, 1, 100, $calendar->timestamp_today());
 167
 168         $output  = html_writer::start_tag('div', array('class'=>'header'));
 169         $output .= $this->course_filter_selector($returnurl, get_string('dayviewfor', 'calendar'));
 170         if (calendar_user_can_add_event($calendar->course)) {
 171             $output .= $this->add_event_button($calendar->course->id, 0, 0, 0, $calendar->time);
 172         }
 173         $output .= html_writer::end_tag('div');
 174         // Controls
 175         $output .= html_writer::tag('div', calendar_top_controls('day', array('id' => $calendar->courseid, 'time' => $calendar->time)), array('class'=>'controls'));
 176
 177         if (empty($events)) {
 178             // There is nothing to display today.
 179             $output .= html_writer::span(get_string('daywithnoevents', 'calendar'), 'calendar-information calendar-no-results');
 180         } else {
 181             $output .= html_writer::start_tag('div', array('class' => 'eventlist'));
 182             $underway = array();
 183             // First, print details about events that start today
 184             foreach ($events as $event) {
 185                 $event = new calendar_event($event);
 186                 $event->calendarcourseid = $calendar->courseid;
 187                 if ($event->timestart >= $calendar->timestamp_today() && $event->timestart <= $calendar->timestamp_tomorrow()-1) {  // Print it now
 188                     $event->time = calendar_format_event_time($event, time(), null, false, $calendar->timestamp_today());
 189                     $output .= $this->event($event);
 190                 } else {                                                                 // Save this for later
 191                     $underway[] = $event;
 192                 }
 193             }
 194
 195             // Then, show a list of all events that just span this day
 196             if (!empty($underway)) {
 197                 $output .= html_writer::span(get_string('spanningevents', 'calendar'),
 198                     'calendar-information calendar-span-multiple-days');
 199                 foreach ($underway as $event) {
 200                     $event->time = calendar_format_event_time($event, time(), null, false, $calendar->timestamp_today());
 201                     $output .= $this->event($event);
 202                 }
 203             }
 204
 205             $output .= html_writer::end_tag('div');
 206         }
 207
 208         return $output;
 209     }
 210
 211     /**
 212      * Displays an event
 213      *
 214      * @param calendar_event $event
 215      * @param bool $showactions
 216      * @return string
 217      */
 218     public function event(calendar_event $event, $showactions=true) {
 219         global $CFG;
 220
 221         $event = calendar_add_event_metadata($event);
 222         $context = $event->context;
 223         $output = '';
 224
 225         if (!empty($event->icon)) {
 226             $output .= $event->icon;
 227         } else {
 228             $output .= $this->output->spacer(array('height' => 16, 'width' => 16));
 229         }
 230
 231         if (!empty($event->referer)) {
 232             $output .= $this->output->heading($event->referer, 3, array('class' => 'referer'));
 233         } else {
 234             $output .= $this->output->heading(
 235                 format_string($event->name, false, array('context' => $context)),
 236                 3,
 237                 array('class' => 'name')
 238             );
 239         }
 240         if (!empty($event->courselink)) {
 241             $output .= html_writer::tag('div', $event->courselink, array('class' => 'course'));
 242         }
 243         // Show subscription source if needed.
 244         if (!empty($event->subscription) && $CFG->calendar_showicalsource) {
 245             if (!empty($event->subscription->url)) {
 246                 $source = html_writer::link($event->subscription->url, get_string('subsource', 'calendar', $event->subscription));
 247             } else {
 248                 // File based ical.
 249                 $source = get_string('subsource', 'calendar', $event->subscription);
 250             }
 251             $output .= html_writer::tag('div', $source, array('class' => 'subscription'));
 252         }
 253         if (!empty($event->time)) {
 254             $output .= html_writer::tag('span', $event->time, array('class' => 'date'));
 255         } else {
 256             $output .= html_writer::tag('span', calendar_time_representation($event->timestart), array('class' => 'date'));
 257         }
 258
 259         $eventdetailshtml = '';
 260         $eventdetailsclasses = '';
 261
 262         $eventdetailshtml .= format_text($event->description, $event->format, array('context' => $context));
 263         $eventdetailsclasses .= 'description';
 264         if (isset($event->cssclass)) {
 265             $eventdetailsclasses .= ' '.$event->cssclass;
 266         }
 267
 268         $output .= html_writer::tag('div', $eventdetailshtml, array('class' => $eventdetailsclasses));
 269
 270         if (calendar_edit_event_allowed($event) && $showactions) {
 271             if (empty($event->cmid)) {
 272                 $editlink = new moodle_url(CALENDAR_URL.'event.php', array('action'=>'edit', 'id'=>$event->id));
 273                 $deletelink = new moodle_url(CALENDAR_URL.'delete.php', array('id'=>$event->id));
 274                 if (!empty($event->calendarcourseid)) {
 275                     $editlink->param('course', $event->calendarcourseid);
 276                     $deletelink->param('course', $event->calendarcourseid);
 277                 }
 278             } else {
 279                 $editlink = new moodle_url('/course/mod.php', array('update'=>$event->cmid, 'return'=>true, 'sesskey'=>sesskey()));
 280                 $deletelink = null;
 281             }
 282
 283             $commands  = html_writer::start_tag('div', array('class'=>'commands'));
 284             $commands .= html_writer::start_tag('a', array('href'=>$editlink));
 285             $commands .= html_writer::empty_tag('img', array('src'=>$this->output->pix_url('t/edit'), 'alt'=>get_string('tt_editevent', 'calendar'), 'title'=>get_string('tt_editevent', 'calendar')));
 286             $commands .= html_writer::end_tag('a');
 287             if ($deletelink != null) {
 288                 $commands .= html_writer::start_tag('a', array('href'=>$deletelink));
 289                 $commands .= html_writer::empty_tag('img', array('src'=>$this->output->pix_url('t/delete'), 'alt'=>get_string('tt_deleteevent', 'calendar'), 'title'=>get_string('tt_deleteevent', 'calendar')));
 290                 $commands .= html_writer::end_tag('a');
 291             }
 292             $commands .= html_writer::end_tag('div');
 293             $output .= $commands;
 294         }
 295         return html_writer::tag('div', $output , array('class' => 'event', 'id' => 'event_' . $event->id));
 296     }
 297
 298     /**
 299      * Displays a month in detail
 300      *
 301      * @param calendar_information $calendar
 302      * @param moodle_url $returnurl the url to return to
 303      * @return string
 304      */
 305     public function show_month_detailed(calendar_information $calendar, moodle_url $returnurl  = null) {
 306         global $CFG;
 307
 308         if (empty($returnurl)) {
 309             $returnurl = $this->page->url;
 310         }
 311
 312         // Get the calendar type we are using.
 313         $calendartype = \core_calendar\type_factory::get_calendar_instance();
 314
 315         // Store the display settings.
 316         $display = new stdClass;
 317         $display->thismonth = false;
 318
 319         // Get the specified date in the calendar type being used.
 320         $date = $calendartype->timestamp_to_date_array($calendar->time);
 321         $thisdate = $calendartype->timestamp_to_date_array(time());
 322         if ($date['mon'] == $thisdate['mon'] && $date['year'] == $thisdate['year']) {
 323             $display->thismonth = true;
 324             $date = $thisdate;
 325             $calendar->time = time();
 326         }
 327
 328         // Get Gregorian date for the start of the month.
 329         $gregoriandate = $calendartype->convert_to_gregorian($date['year'], $date['mon'], 1);
 330         // Store the gregorian date values to be used later.
 331         list($gy, $gm, $gd, $gh, $gmin) = array($gregoriandate['year'], $gregoriandate['month'], $gregoriandate['day'],
 332             $gregoriandate['hour'], $gregoriandate['minute']);
 333
 334         // Get the starting week day for this month.
 335         $startwday = dayofweek(1, $date['mon'], $date['year']);
 336         // Get the days in a week.
 337         $daynames = calendar_get_days();
 338         // Store the number of days in a week.
 339         $numberofdaysinweek = $calendartype->get_num_weekdays();
 340
 341         $display->minwday = calendar_get_starting_weekday();
 342         $display->maxwday = $display->minwday + ($numberofdaysinweek - 1);
 343         $display->maxdays = calendar_days_in_month($date['mon'], $date['year']);
 344
 345         // These are used for DB queries, so we want unixtime, so we need to use Gregorian dates.
 346         $display->tstart = make_timestamp($gy, $gm, $gd, $gh, $gmin, 0);
 347         $display->tend = $display->tstart + ($display->maxdays * DAYSECS) - 1;
 348
 349         // Align the starting weekday to fall in our display range
 350         // This is simple, not foolproof.
 351         if ($startwday < $display->minwday) {
 352             $startwday += $numberofdaysinweek;
 353         }
 354
 355         // Get events from database
 356         $events = calendar_get_events($display->tstart, $display->tend, $calendar->users, $calendar->groups, $calendar->courses);
 357         if (!empty($events)) {
 358             foreach($events as $eventid => $event) {
 359                 $event = new calendar_event($event);
 360                 if (!empty($event->modulename)) {
 361                     $cm = get_coursemodule_from_instance($event->modulename, $event->instance);
 362                     if (!\core_availability\info_module::is_user_visible($cm, 0, false)) {
 363                         unset($events[$eventid]);
 364                     }
 365                 }
 366             }
 367         }
 368
 369         // Extract information: events vs. time
 370         calendar_events_by_day($events, $date['mon'], $date['year'], $eventsbyday, $durationbyday, $typesbyday, $calendar->courses);
 371
 372         $output  = html_writer::start_tag('div', array('class'=>'header'));
 373         $output .= $this->course_filter_selector($returnurl, get_string('detailedmonthviewfor', 'calendar'));
 374         if (calendar_user_can_add_event($calendar->course)) {
 375             $output .= $this->add_event_button($calendar->course->id, 0, 0, 0, $calendar->time);
 376         }
 377         $output .= html_writer::end_tag('div', array('class'=>'header'));
 378         // Controls
 379         $output .= html_writer::tag('div', calendar_top_controls('month', array('id' => $calendar->courseid, 'time' => $calendar->time)), array('class' => 'controls'));
 380
 381         $table = new html_table();
 382         $table->attributes = array('class'=>'calendarmonth calendartable');
 383         $table->summary = get_string('calendarheading', 'calendar', userdate($calendar->time, get_string('strftimemonthyear')));
 384         $table->data = array();
 385
 386         // Get the day names as the header.
 387         $header = array();
 388         for($i = $display->minwday; $i <= $display->maxwday; ++$i) {
 389             $header[] = $daynames[$i % $numberofdaysinweek]['shortname'];
 390         }
 391         $table->head = $header;
 392
 393         // For the table display. $week is the row; $dayweek is the column.
 394         $week = 1;
 395         $dayweek = $startwday;
 396
 397         $row = new html_table_row(array());
 398
 399         // Paddding (the first week may have blank days in the beginning)
 400         for($i = $display->minwday; $i < $startwday; ++$i) {
 401             $cell = new html_table_cell('&nbsp;');
 402             $cell->attributes = array('class'=>'nottoday dayblank');
 403             $row->cells[] = $cell;
 404         }
 405
 406         // Now display all the calendar
 407         $weekend = CALENDAR_DEFAULT_WEEKEND;
 408         if (isset($CFG->calendar_weekend)) {
 409             $weekend = intval($CFG->calendar_weekend);
 410         }
 411
 412         $daytime = strtotime('-1 day', $display->tstart);
 413         for ($day = 1; $day <= $display->maxdays; ++$day, ++$dayweek) {
 414             $daytime = strtotime('+1 day', $daytime);
 415             if($dayweek > $display->maxwday) {
 416                 // We need to change week (table row)
 417                 $table->data[] = $row;
 418                 $row = new html_table_row(array());
 419                 $dayweek = $display->minwday;
 420                 ++$week;
 421             }
 422
 423             // Reset vars
 424             $cell = new html_table_cell();
 425             $dayhref = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', array('view' => 'day', 'course' => $calendar->courseid)), 0, 0, 0, $daytime);
 426
 427             $cellclasses = array();
 428
 429             if ($weekend & (1 << ($dayweek % $numberofdaysinweek))) {
 430                 // Weekend. This is true no matter what the exact range is.
 431                 $cellclasses[] = 'weekend';
 432             }
 433
 434             // Special visual fx if an event is defined
 435             if (isset($eventsbyday[$day])) {
 436                 if(count($eventsbyday[$day]) == 1) {
 437                     $title = get_string('oneevent', 'calendar');
 438                 } else {
 439                     $title = get_string('manyevents', 'calendar', count($eventsbyday[$day]));
 440                 }
 441                 $cell->text = html_writer::tag('div', html_writer::link($dayhref, $day, array('title'=>$title)), array('class'=>'day'));
 442             } else {
 443                 $cell->text = html_writer::tag('div', $day, array('class'=>'day'));
 444             }
 445
 446             // Special visual fx if an event spans many days
 447             $durationclass = false;
 448             if (isset($typesbyday[$day]['durationglobal'])) {
 449                 $durationclass = 'duration_global';
 450             } else if (isset($typesbyday[$day]['durationcourse'])) {
 451                 $durationclass = 'duration_course';
 452             } else if (isset($typesbyday[$day]['durationgroup'])) {
 453                 $durationclass = 'duration_group';
 454             } else if (isset($typesbyday[$day]['durationuser'])) {
 455                 $durationclass = 'duration_user';
 456             }
 457             if ($durationclass) {
 458                 $cellclasses[] = 'duration';
 459                 $cellclasses[] = $durationclass;
 460             }
 461
 462             // Special visual fx for today
 463             if ($display->thismonth && $day == $date['mday']) {
 464                 $cellclasses[] = 'day today';
 465             } else {
 466                 $cellclasses[] = 'day nottoday';
 467             }
 468             $cell->attributes = array('class'=>join(' ',$cellclasses));
 469
 470             if (isset($eventsbyday[$day])) {
 471                 $cell->text .= html_writer::start_tag('ul', array('class'=>'events-new'));
 472                 foreach($eventsbyday[$day] as $eventindex) {
 473                     // If event has a class set then add it to the event <li> tag
 474                     $attributes = array();
 475                     if (!empty($events[$eventindex]->class)) {
 476                         $attributes['class'] = $events[$eventindex]->class;
 477                     }
 478                     $dayhref->set_anchor('event_'.$events[$eventindex]->id);
 479                     $link = html_writer::link($dayhref, format_string($events[$eventindex]->name, true));
 480                     $cell->text .= html_writer::tag('li', $link, $attributes);
 481                 }
 482                 $cell->text .= html_writer::end_tag('ul');
 483             }
 484             if (isset($durationbyday[$day])) {
 485                 $cell->text .= html_writer::start_tag('ul', array('class'=>'events-underway'));
 486                 foreach($durationbyday[$day] as $eventindex) {
 487                     $cell->text .= html_writer::tag('li', '['.format_string($events[$eventindex]->name,true).']', array('class'=>'events-underway'));
 488                 }
 489                 $cell->text .= html_writer::end_tag('ul');
 490             }
 491             $row->cells[] = $cell;
 492         }
 493
 494         // Paddding (the last week may have blank days at the end)
 495         for($i = $dayweek; $i <= $display->maxwday; ++$i) {
 496             $cell = new html_table_cell('&nbsp;');
 497             $cell->attributes = array('class'=>'nottoday dayblank');
 498             $row->cells[] = $cell;
 499         }
 500         $table->data[] = $row;
 501         $output .= html_writer::table($table);
 502
 503         return $output;
 504     }
 505
 506     /**
 507      * Displays upcoming events
 508      *
 509      * @param calendar_information $calendar
 510      * @param int $futuredays
 511      * @param int $maxevents
 512      * @return string
 513      */
 514     public function show_upcoming_events(calendar_information $calendar, $futuredays, $maxevents, moodle_url $returnurl = null) {
 515
 516         if ($returnurl === null) {
 517             $returnurl = $this->page->url;
 518         }
 519
 520         $events = calendar_get_upcoming($calendar->courses, $calendar->groups, $calendar->users, $futuredays, $maxevents);
 521
 522         $output  = html_writer::start_tag('div', array('class'=>'header'));
 523         $output .= $this->course_filter_selector($returnurl, get_string('upcomingeventsfor', 'calendar'));
 524         if (calendar_user_can_add_event($calendar->course)) {
 525             $output .= $this->add_event_button($calendar->course->id);
 526         }
 527         $output .= html_writer::end_tag('div');
 528
 529         if ($events) {
 530             $output .= html_writer::start_tag('div', array('class' => 'eventlist'));
 531             foreach ($events as $event) {
 532                 // Convert to calendar_event object so that we transform description
 533                 // accordingly
 534                 $event = new calendar_event($event);
 535                 $event->calendarcourseid = $calendar->courseid;
 536                 $output .= $this->event($event);
 537             }
 538             $output .= html_writer::end_tag('div');
 539         } else {
 540             $output .= html_writer::span(get_string('noupcomingevents', 'calendar'), 'calendar-information calendar-no-results');
 541         }
 542
 543         return $output;
 544     }
 545
 546     /**
 547      * Displays a course filter selector
 548      *
 549      * @param moodle_url $returnurl The URL that the user should be taken too upon selecting a course.
 550      * @param string $label The label to use for the course select.
 551      * @return string
 552      */
 553     protected function course_filter_selector(moodle_url $returnurl, $label=null) {
 554         global $USER, $SESSION, $CFG;
 555
 556         if (!isloggedin() or isguestuser()) {
 557             return '';
 558         }
 559
 560         if (has_capability('moodle/calendar:manageentries', context_system::instance()) && !empty($CFG->calendar_adminseesall)) {
 561             $courses = get_courses('all', 'c.shortname','c.id,c.shortname');
 562         } else {
 563             $courses = enrol_get_my_courses();
 564         }
 565
 566         unset($courses[SITEID]);
 567
 568         $courseoptions = array();
 569         $courseoptions[SITEID] = get_string('fulllistofcourses');
 570         foreach ($courses as $course) {
 571             $coursecontext = context_course::instance($course->id);
 572             $courseoptions[$course->id] = format_string($course->shortname, true, array('context' => $coursecontext));
 573         }
 574
 575         if ($this->page->course->id !== SITEID) {
 576             $selected = $this->page->course->id;
 577         } else {
 578             $selected = '';
 579         }
 580         $courseurl = new moodle_url($returnurl);
 581         $courseurl->remove_params('course');
 582         $select = new single_select($courseurl, 'course', $courseoptions, $selected, null);
 583         $select->class = 'cal_courses_flt';
 584         if ($label !== null) {
 585             $select->set_label($label);
 586         } else {
 587             $select->set_label(get_string('listofcourses'), array('class' => 'accesshide'));
 588         }
 589         return $this->output->render($select);
 590     }
 591
 592     /**
 593      * Renders a table containing information about calendar subscriptions.
 594      *
 595      * @param int $courseid
 596      * @param array $subscriptions
 597      * @param string $importresults
 598      * @return string
 599      */
 600     public function subscription_details($courseid, $subscriptions, $importresults = '') {
 601         $table = new html_table();
 602         $table->head  = array(
 603             get_string('colcalendar', 'calendar'),
 604             get_string('collastupdated', 'calendar'),
 605             get_string('eventkind', 'calendar'),
 606             get_string('colpoll', 'calendar'),
 607             get_string('colactions', 'calendar')
 608         );
 609         $table->align = array('left', 'left', 'left', 'center');
 610         $table->width = '100%';
 611         $table->data  = array();
 612
 613         if (empty($subscriptions)) {
 614             $cell = new html_table_cell(get_string('nocalendarsubscriptions', 'calendar'));
 615             $cell->colspan = 5;
 616             $table->data[] = new html_table_row(array($cell));
 617         }
 618         $strnever = new lang_string('never', 'calendar');
 619         foreach ($subscriptions as $sub) {
 620             $label = $sub->name;
 621             if (!empty($sub->url)) {
 622                 $label = html_writer::link($sub->url, $label);
 623             }
 624             if (empty($sub->lastupdated)) {
 625                 $lastupdated = $strnever->out();
 626             } else {
 627                 $lastupdated = userdate($sub->lastupdated, get_string('strftimedatetimeshort', 'langconfig'));
 628             }
 629
 630             $cell = new html_table_cell($this->subscription_action_form($sub, $courseid));
 631             $cell->colspan = 2;
 632             $type = $sub->eventtype . 'events';
 633
 634             $table->data[] = new html_table_row(array(
 635                 new html_table_cell($label),
 636                 new html_table_cell($lastupdated),
 637                 new html_table_cell(get_string($type, 'calendar')),
 638                 $cell
 639             ));
 640         }
 641
 642         $out  = $this->output->box_start('generalbox calendarsubs');
 643
 644         $out .= $importresults;
 645         $out .= html_writer::table($table);
 646         $out .= $this->output->box_end();
 647         return $out;
 648     }
 649
 650     /**
 651      * Creates a form to perform actions on a given subscription.
 652      *
 653      * @param stdClass $subscription
 654      * @param int $courseid
 655      * @return string
 656      */
 657     protected function subscription_action_form($subscription, $courseid) {
 658         // Assemble form for the subscription row.
 659         $html = html_writer::start_tag('form', array('action' => new moodle_url('/calendar/managesubscriptions.php'), 'method' => 'post'));
 660         if (empty($subscription->url)) {
 661             // Don't update an iCal file, which has no URL.
 662             $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'pollinterval', 'value' => '0'));
 663         } else {
 664             // Assemble pollinterval control.
 665             $html .= html_writer::start_tag('div', array('style' => 'float:left;'));
 666             $html .= html_writer::start_tag('select', array('name' => 'pollinterval'));
 667             foreach (calendar_get_pollinterval_choices() as $k => $v) {
 668                 $attributes = array();
 669                 if ($k == $subscription->pollinterval) {
 670                     $attributes['selected'] = 'selected';
 671                 }
 672                 $attributes['value'] = $k;
 673                 $html .= html_writer::tag('option', $v, $attributes);
 674             }
 675             $html .= html_writer::end_tag('select');
 676             $html .= html_writer::end_tag('div');
 677         }
 678         $html .= html_writer::start_tag('div', array('style' => 'float:right;'));
 679         $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'sesskey', 'value' => sesskey()));
 680         $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'course', 'value' => $courseid));
 681         $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'id', 'value' => $subscription->id));
 682         if (!empty($subscription->url)) {
 683             $html .= html_writer::tag('button', get_string('update'), array('type'  => 'submit', 'name' => 'action',
 684                                                                             'value' => CALENDAR_SUBSCRIPTION_UPDATE));
 685         }
 686         $html .= html_writer::tag('button', get_string('remove'), array('type'  => 'submit', 'name' => 'action',
 687                                                                         'value' => CALENDAR_SUBSCRIPTION_REMOVE));
 688         $html .= html_writer::end_tag('div');
 689         $html .= html_writer::end_tag('form');
 690         return $html;
 691     }
 692 }