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         // Get the calendar type we are using.
 170         $calendartype = \core_calendar\type_factory::get_calendar_instance();
 171
 172         $date = $calendartype->timestamp_to_date_array($calendar->time);
 173
 174         $prevmonth = calendar_sub_month($date['mon'], $date['year']);
 175         $prevmonthtime = $calendartype->convert_to_gregorian($prevmonth[1], $prevmonth[0], 1);
 176         $prevmonthtime = make_timestamp($prevmonthtime['year'], $prevmonthtime['month'], $prevmonthtime['day'],
 177             $prevmonthtime['hour'], $prevmonthtime['minute']);
 178
 179         $nextmonth = calendar_add_month($date['mon'], $date['year']);
 180         $nextmonthtime = $calendartype->convert_to_gregorian($nextmonth[1], $nextmonth[0], 1);
 181         $nextmonthtime = make_timestamp($nextmonthtime['year'], $nextmonthtime['month'], $nextmonthtime['day'],
 182             $nextmonthtime['hour'], $nextmonthtime['minute']);
 183
 184         $content  = html_writer::start_tag('div', array('class' => 'minicalendarblock'));
 185         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, false, false, 'display', $calendar->courseid, $prevmonthtime);
 186         $content .= html_writer::end_tag('div');
 187         $content .= html_writer::start_tag('div', array('class' => 'minicalendarblock'));
 188         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, false, false, 'display', $calendar->courseid, $calendar->time);
 189         $content .= html_writer::end_tag('div');
 190         $content .= html_writer::start_tag('div', array('class' => 'minicalendarblock'));
 191         $content .= calendar_get_mini($calendar->courses, $calendar->groups, $calendar->users, false, false, 'display', $calendar->courseid, $nextmonthtime);
 192         $content .= html_writer::end_tag('div');
 193         return $content;
 194     }
 195
 196     /**
 197      * Adds a pretent calendar block
 198      *
 199      * @param block_contents $bc
 200      * @param mixed $pos BLOCK_POS_RIGHT | BLOCK_POS_LEFT
 201      */
 202     public function add_pretend_calendar_block(block_contents $bc, $pos=BLOCK_POS_RIGHT) {
 203         $this->page->blocks->add_fake_block($bc, $pos);
 204     }
 205
 206     /**
 207      * Creates a button to add a new event
 208      *
 209      * @param int $courseid
 210      * @param int $day
 211      * @param int $month
 212      * @param int $year
 213      * @param int $time the unixtime, used for multiple calendar support. The values $day,
 214      *     $month and $year are kept for backwards compatibility.
 215      * @return string
 216      */
 217     protected function add_event_button($courseid, $day = null, $month = null, $year = null, $time = null) {
 218         // If a day, month and year were passed then convert it to a timestamp. If these were passed
 219         // then we can assume the day, month and year are passed as Gregorian, as no where in core
 220         // should we be passing these values rather than the time. This is done for BC.
 221         if (!empty($day) && !empty($month) && !empty($year)) {
 222             if (checkdate($month, $day, $year)) {
 223                 $time = make_timestamp($year, $month, $day);
 224             } else {
 225                 $time = time();
 226             }
 227         } else if (empty($time)) {
 228             $time = time();
 229         }
 230
 231         $output = html_writer::start_tag('div', array('class'=>'buttons'));
 232         $output .= html_writer::start_tag('form', array('action' => CALENDAR_URL . 'event.php', 'method' => 'get'));
 233         $output .= html_writer::start_tag('div');
 234         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name' => 'action', 'value' => 'new'));
 235         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name' => 'course', 'value' => $courseid));
 236         $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name' => 'time', 'value' => $time));
 237         $output .= html_writer::empty_tag('input', array('type'=>'submit', 'value' => get_string('newevent', 'calendar')));
 238         $output .= html_writer::end_tag('div');
 239         $output .= html_writer::end_tag('form');
 240         $output .= html_writer::end_tag('div');
 241         return $output;
 242     }
 243
 244     /**
 245      * Displays the calendar for a single day
 246      *
 247      * @param calendar_information $calendar
 248      * @return string
 249      */
 250     public function show_day(calendar_information $calendar, moodle_url $returnurl = null) {
 251
 252         if ($returnurl === null) {
 253             $returnurl = $this->page->url;
 254         }
 255
 256         $events = calendar_get_upcoming($calendar->courses, $calendar->groups, $calendar->users, 1, 100, $calendar->timestamp_today());
 257
 258         $output  = html_writer::start_tag('div', array('class'=>'header'));
 259         if (calendar_user_can_add_event($calendar->course)) {
 260             $output .= $this->add_event_button($calendar->course->id, 0, 0, 0, $calendar->time);
 261         }
 262         //$output .= html_writer::tag('label', get_string('dayview', 'calendar'), array('for'=>'cal_course_flt_jump'));
 263         $output .= $this->course_filter_selector($returnurl, get_string('dayview', 'calendar'));
 264         $output .= html_writer::end_tag('div');
 265         // Controls
 266         $output .= html_writer::tag('div', calendar_top_controls('day', array('id' => $calendar->courseid, 'time' => $calendar->time)), array('class'=>'controls'));
 267
 268         if (empty($events)) {
 269             // There is nothing to display today.
 270             $output .= $this->output->heading(get_string('daywithnoevents', 'calendar'), 3);
 271         } else {
 272             $output .= html_writer::start_tag('div', array('class'=>'eventlist'));
 273             $underway = array();
 274             // First, print details about events that start today
 275             foreach ($events as $event) {
 276                 $event = new calendar_event($event);
 277                 $event->calendarcourseid = $calendar->courseid;
 278                 if ($event->timestart >= $calendar->timestamp_today() && $event->timestart <= $calendar->timestamp_tomorrow()-1) {  // Print it now
 279                     $event->time = calendar_format_event_time($event, time(), null, false, $calendar->timestamp_today());
 280                     $output .= $this->event($event);
 281                 } else {                                                                 // Save this for later
 282                     $underway[] = $event;
 283                 }
 284             }
 285
 286             // Then, show a list of all events that just span this day
 287             if (!empty($underway)) {
 288                 $output .= $this->output->heading(get_string('spanningevents', 'calendar'), 3);
 289                 foreach ($underway as $event) {
 290                     $event->time = calendar_format_event_time($event, time(), null, false, $calendar->timestamp_today());
 291                     $output .= $this->event($event);
 292                 }
 293             }
 294
 295             $output .= html_writer::end_tag('div');
 296         }
 297
 298         return $output;
 299     }
 300
 301     /**
 302      * Displays an event
 303      *
 304      * @param calendar_event $event
 305      * @param bool $showactions
 306      * @return string
 307      */
 308     public function event(calendar_event $event, $showactions=true) {
 309         global $CFG;
 310
 311         $event = calendar_add_event_metadata($event);
 312         $context = $event->context;
 313
 314         $anchor  = html_writer::tag('a', '', array('name'=>'event_'.$event->id));
 315
 316         $table = new html_table();
 317         $table->attributes = array('class'=>'event', 'cellspacing'=>'0');
 318         $table->data = array(
 319             0 => new html_table_row(),
 320             1 => new html_table_row(),
 321         );
 322
 323         if (!empty($event->icon)) {
 324             $table->data[0]->cells[0] = new html_table_cell($anchor.$event->icon);
 325         } else {
 326             $table->data[0]->cells[0] = new html_table_cell($anchor.$this->output->spacer(array('height'=>16, 'width'=>16, 'br'=>true)));
 327         }
 328         $table->data[0]->cells[0]->attributes['class'] .= ' picture';
 329
 330         $table->data[0]->cells[1] = new html_table_cell();
 331         $table->data[0]->cells[1]->attributes['class'] .= ' topic';
 332         if (!empty($event->referer)) {
 333             $table->data[0]->cells[1]->text .= html_writer::tag('div', $event->referer, array('class'=>'referer'));
 334         } else {
 335             $table->data[0]->cells[1]->text .= html_writer::tag('div', format_string($event->name, false, array('context' => $context)), array('class'=>'name'));
 336         }
 337         if (!empty($event->courselink)) {
 338             $table->data[0]->cells[1]->text .= html_writer::tag('div', $event->courselink, array('class'=>'course'));
 339         }
 340         // Show subscription source if needed.
 341         if (!empty($event->subscription) && $CFG->calendar_showicalsource) {
 342             if (!empty($event->subscription->url)) {
 343                 $source = html_writer::link($event->subscription->url, get_string('subsource', 'calendar', $event->subscription));
 344             } else {
 345                 // File based ical.
 346                 $source = get_string('subsource', 'calendar', $event->subscription);
 347             }
 348             $table->data[0]->cells[1]->text .= html_writer::tag('div', $source, array('class' => 'subscription'));
 349         }
 350         if (!empty($event->time)) {
 351             $table->data[0]->cells[1]->text .= html_writer::tag('span', $event->time, array('class'=>'date'));
 352         } else {
 353             $table->data[0]->cells[1]->text .= html_writer::tag('span', calendar_time_representation($event->timestart), array('class'=>'date'));
 354         }
 355
 356         $table->data[1]->cells[0] = new html_table_cell('&nbsp;');
 357         $table->data[1]->cells[0]->attributes['class'] .= 'side';
 358
 359         $table->data[1]->cells[1] = new html_table_cell(format_text($event->description, $event->format, array('context' => $context)));
 360         $table->data[1]->cells[1]->attributes['class'] .= ' description';
 361         if (isset($event->cssclass)) {
 362             $table->data[1]->cells[1]->attributes['class'] .= ' '.$event->cssclass;
 363         }
 364
 365         if (calendar_edit_event_allowed($event) && $showactions) {
 366             if (empty($event->cmid)) {
 367                 $editlink = new moodle_url(CALENDAR_URL.'event.php', array('action'=>'edit', 'id'=>$event->id));
 368                 $deletelink = new moodle_url(CALENDAR_URL.'delete.php', array('id'=>$event->id));
 369                 if (!empty($event->calendarcourseid)) {
 370                     $editlink->param('course', $event->calendarcourseid);
 371                     $deletelink->param('course', $event->calendarcourseid);
 372                 }
 373             } else {
 374                 $editlink = new moodle_url('/course/mod.php', array('update'=>$event->cmid, 'return'=>true, 'sesskey'=>sesskey()));
 375                 $deletelink = null;
 376             }
 377
 378             $commands  = html_writer::start_tag('div', array('class'=>'commands'));
 379             $commands .= html_writer::start_tag('a', array('href'=>$editlink));
 380             $commands .= html_writer::empty_tag('img', array('src'=>$this->output->pix_url('t/edit'), 'alt'=>get_string('tt_editevent', 'calendar'), 'title'=>get_string('tt_editevent', 'calendar')));
 381             $commands .= html_writer::end_tag('a');
 382             if ($deletelink != null) {
 383                 $commands .= html_writer::start_tag('a', array('href'=>$deletelink));
 384                 $commands .= html_writer::empty_tag('img', array('src'=>$this->output->pix_url('t/delete'), 'alt'=>get_string('tt_deleteevent', 'calendar'), 'title'=>get_string('tt_deleteevent', 'calendar')));
 385                 $commands .= html_writer::end_tag('a');
 386             }
 387             $commands .= html_writer::end_tag('div');
 388             $table->data[1]->cells[1]->text .= $commands;
 389         }
 390         return html_writer::table($table);
 391     }
 392
 393     /**
 394      * Displays a month in detail
 395      *
 396      * @param calendar_information $calendar
 397      * @param moodle_url $returnurl the url to return to
 398      * @return string
 399      */
 400     public function show_month_detailed(calendar_information $calendar, moodle_url $returnurl  = null) {
 401         global $CFG;
 402
 403         if (empty($returnurl)) {
 404             $returnurl = $this->page->url;
 405         }
 406
 407         // Get the calendar type we are using.
 408         $calendartype = \core_calendar\type_factory::get_calendar_instance();
 409
 410         // Store the display settings.
 411         $display = new stdClass;
 412         $display->thismonth = false;
 413
 414         // Get the specified date in the calendar type being used.
 415         $date = $calendartype->timestamp_to_date_array($calendar->time);
 416         $thisdate = $calendartype->timestamp_to_date_array(time());
 417         if ($date['mon'] == $thisdate['mon'] && $date['year'] == $thisdate['year']) {
 418             $display->thismonth = true;
 419             $date = $thisdate;
 420             $calendar->time = time();
 421         }
 422
 423         // Get Gregorian date for the start of the month.
 424         $gregoriandate = $calendartype->convert_to_gregorian($date['year'], $date['mon'], 1);
 425         // Store the gregorian date values to be used later.
 426         list($gy, $gm, $gd, $gh, $gmin) = array($gregoriandate['year'], $gregoriandate['month'], $gregoriandate['day'],
 427             $gregoriandate['hour'], $gregoriandate['minute']);
 428
 429         // Get the starting week day for this month.
 430         $startwday = dayofweek(1, $date['mon'], $date['year']);
 431         // Get the days in a week.
 432         $daynames = calendar_get_days();
 433         // Store the number of days in a week.
 434         $numberofdaysinweek = $calendartype->get_num_weekdays();
 435
 436         $display->minwday = calendar_get_starting_weekday();
 437         $display->maxwday = $display->minwday + ($numberofdaysinweek - 1);
 438         $display->maxdays = calendar_days_in_month($date['mon'], $date['year']);
 439
 440         // These are used for DB queries, so we want unixtime, so we need to use Gregorian dates.
 441         $display->tstart = make_timestamp($gy, $gm, $gd, $gh, $gmin, 0);
 442         $display->tend = $display->tstart + ($display->maxdays * DAYSECS) - 1;
 443
 444         // Align the starting weekday to fall in our display range
 445         // This is simple, not foolproof.
 446         if ($startwday < $display->minwday) {
 447             $startwday += $numberofdaysinweek;
 448         }
 449
 450         // Get events from database
 451         $events = calendar_get_events($display->tstart, $display->tend, $calendar->users, $calendar->groups, $calendar->courses);
 452         if (!empty($events)) {
 453             foreach($events as $eventid => $event) {
 454                 $event = new calendar_event($event);
 455                 if (!empty($event->modulename)) {
 456                     $cm = get_coursemodule_from_instance($event->modulename, $event->instance);
 457                     if (!groups_course_module_visible($cm)) {
 458                         unset($events[$eventid]);
 459                     }
 460                 }
 461             }
 462         }
 463
 464         // Extract information: events vs. time
 465         calendar_events_by_day($events, $date['mon'], $date['year'], $eventsbyday, $durationbyday, $typesbyday, $calendar->courses);
 466
 467         $output  = html_writer::start_tag('div', array('class'=>'header'));
 468         if (calendar_user_can_add_event($calendar->course)) {
 469             $output .= $this->add_event_button($calendar->course->id, 0, 0, 0, $calendar->time);
 470         }
 471         $output .= get_string('detailedmonthview', 'calendar').': '.$this->course_filter_selector($returnurl);
 472         $output .= html_writer::end_tag('div', array('class'=>'header'));
 473         // Controls
 474         $output .= html_writer::tag('div', calendar_top_controls('month', array('id' => $calendar->courseid, 'time' => $calendar->time)), array('class' => 'controls'));
 475
 476         $table = new html_table();
 477         $table->attributes = array('class'=>'calendarmonth calendartable');
 478         $table->summary = get_string('calendarheading', 'calendar', userdate($calendar->time, get_string('strftimemonthyear')));
 479         $table->data = array();
 480
 481         // Get the day names as the header.
 482         $header = array();
 483         for($i = $display->minwday; $i <= $display->maxwday; ++$i) {
 484             $header[] = $daynames[$i % $numberofdaysinweek]['shortname'];
 485         }
 486         $table->head = $header;
 487
 488         // For the table display. $week is the row; $dayweek is the column.
 489         $week = 1;
 490         $dayweek = $startwday;
 491
 492         $row = new html_table_row(array());
 493
 494         // Paddding (the first week may have blank days in the beginning)
 495         for($i = $display->minwday; $i < $startwday; ++$i) {
 496             $cell = new html_table_cell('&nbsp;');
 497             $cell->attributes = array('class'=>'nottoday dayblank');
 498             $row->cells[] = $cell;
 499         }
 500
 501         // Now display all the calendar
 502         $weekend = CALENDAR_DEFAULT_WEEKEND;
 503         if (isset($CFG->calendar_weekend)) {
 504             $weekend = intval($CFG->calendar_weekend);
 505         }
 506
 507         $daytime = $display->tstart - DAYSECS;
 508         for ($day = 1; $day <= $display->maxdays; ++$day, ++$dayweek) {
 509             $daytime = $daytime + DAYSECS;
 510             if($dayweek > $display->maxwday) {
 511                 // We need to change week (table row)
 512                 $table->data[] = $row;
 513                 $row = new html_table_row(array());
 514                 $dayweek = $display->minwday;
 515                 ++$week;
 516             }
 517
 518             // Reset vars
 519             $cell = new html_table_cell();
 520             $dayhref = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', array('view' => 'day', 'course' => $calendar->courseid)), 0, 0, 0, $daytime);
 521
 522             $cellclasses = array();
 523
 524             if ($weekend & (1 << ($dayweek % $numberofdaysinweek))) {
 525                 // Weekend. This is true no matter what the exact range is.
 526                 $cellclasses[] = 'weekend';
 527             }
 528
 529             // Special visual fx if an event is defined
 530             if (isset($eventsbyday[$day])) {
 531                 if(count($eventsbyday[$day]) == 1) {
 532                     $title = get_string('oneevent', 'calendar');
 533                 } else {
 534                     $title = get_string('manyevents', 'calendar', count($eventsbyday[$day]));
 535                 }
 536                 $cell->text = html_writer::tag('div', html_writer::link($dayhref, $day, array('title'=>$title)), array('class'=>'day'));
 537             } else {
 538                 $cell->text = html_writer::tag('div', $day, array('class'=>'day'));
 539             }
 540
 541             // Special visual fx if an event spans many days
 542             $durationclass = false;
 543             if (isset($typesbyday[$day]['durationglobal'])) {
 544                 $durationclass = 'duration_global';
 545             } else if (isset($typesbyday[$day]['durationcourse'])) {
 546                 $durationclass = 'duration_course';
 547             } else if (isset($typesbyday[$day]['durationgroup'])) {
 548                 $durationclass = 'duration_group';
 549             } else if (isset($typesbyday[$day]['durationuser'])) {
 550                 $durationclass = 'duration_user';
 551             }
 552             if ($durationclass) {
 553                 $cellclasses[] = 'duration';
 554                 $cellclasses[] = $durationclass;
 555             }
 556
 557             // Special visual fx for today
 558             if ($display->thismonth && $day == $date['mday']) {
 559                 $cellclasses[] = 'day today';
 560             } else {
 561                 $cellclasses[] = 'day nottoday';
 562             }
 563             $cell->attributes = array('class'=>join(' ',$cellclasses));
 564
 565             if (isset($eventsbyday[$day])) {
 566                 $cell->text .= html_writer::start_tag('ul', array('class'=>'events-new'));
 567                 foreach($eventsbyday[$day] as $eventindex) {
 568                     // If event has a class set then add it to the event <li> tag
 569                     $attributes = array();
 570                     if (!empty($events[$eventindex]->class)) {
 571                         $attributes['class'] = $events[$eventindex]->class;
 572                     }
 573                     $dayhref->set_anchor('event_'.$events[$eventindex]->id);
 574                     $link = html_writer::link($dayhref, format_string($events[$eventindex]->name, true));
 575                     $cell->text .= html_writer::tag('li', $link, $attributes);
 576                 }
 577                 $cell->text .= html_writer::end_tag('ul');
 578             }
 579             if (isset($durationbyday[$day])) {
 580                 $cell->text .= html_writer::start_tag('ul', array('class'=>'events-underway'));
 581                 foreach($durationbyday[$day] as $eventindex) {
 582                     $cell->text .= html_writer::tag('li', '['.format_string($events[$eventindex]->name,true).']', array('class'=>'events-underway'));
 583                 }
 584                 $cell->text .= html_writer::end_tag('ul');
 585             }
 586             $row->cells[] = $cell;
 587         }
 588
 589         // Paddding (the last week may have blank days at the end)
 590         for($i = $dayweek; $i <= $display->maxwday; ++$i) {
 591             $cell = new html_table_cell('&nbsp;');
 592             $cell->attributes = array('class'=>'nottoday dayblank');
 593             $row->cells[] = $cell;
 594         }
 595         $table->data[] = $row;
 596         $output .= html_writer::table($table);
 597
 598         return $output;
 599     }
 600
 601     /**
 602      * Displays upcoming events
 603      *
 604      * @param calendar_information $calendar
 605      * @param int $futuredays
 606      * @param int $maxevents
 607      * @return string
 608      */
 609     public function show_upcoming_events(calendar_information $calendar, $futuredays, $maxevents, moodle_url $returnurl = null) {
 610
 611         if ($returnurl === null) {
 612             $returnurl = $this->page->url;
 613         }
 614
 615         $events = calendar_get_upcoming($calendar->courses, $calendar->groups, $calendar->users, $futuredays, $maxevents);
 616
 617         $output  = html_writer::start_tag('div', array('class'=>'header'));
 618         if (calendar_user_can_add_event($calendar->course)) {
 619             $output .= $this->add_event_button($calendar->course->id);
 620         }
 621         $output .= html_writer::tag('label', get_string('upcomingevents', 'calendar'), array('for'=>'cal_course_flt_jump'));
 622         $output .= $this->course_filter_selector($returnurl);
 623         $output .= html_writer::end_tag('div');
 624
 625         if ($events) {
 626             $output .= html_writer::start_tag('div', array('class'=>'eventlist'));
 627             foreach ($events as $event) {
 628                 // Convert to calendar_event object so that we transform description
 629                 // accordingly
 630                 $event = new calendar_event($event);
 631                 $event->calendarcourseid = $calendar->courseid;
 632                 $output .= $this->event($event);
 633             }
 634             $output .= html_writer::end_tag('div');
 635         } else {
 636             $output .= $this->output->heading(get_string('noupcomingevents', 'calendar'));
 637         }
 638
 639         return $output;
 640     }
 641
 642     /**
 643      * Displays a course filter selector
 644      *
 645      * @param moodle_url $returnurl The URL that the user should be taken too upon selecting a course.
 646      * @param string $label The label to use for the course select.
 647      * @return string
 648      */
 649     protected function course_filter_selector(moodle_url $returnurl, $label=null) {
 650         global $USER, $SESSION, $CFG;
 651
 652         if (!isloggedin() or isguestuser()) {
 653             return '';
 654         }
 655
 656         if (has_capability('moodle/calendar:manageentries', context_system::instance()) && !empty($CFG->calendar_adminseesall)) {
 657             $courses = get_courses('all', 'c.shortname','c.id,c.shortname');
 658         } else {
 659             $courses = enrol_get_my_courses();
 660         }
 661
 662         unset($courses[SITEID]);
 663
 664         $courseoptions = array();
 665         $courseoptions[SITEID] = get_string('fulllistofcourses');
 666         foreach ($courses as $course) {
 667             $coursecontext = context_course::instance($course->id);
 668             $courseoptions[$course->id] = format_string($course->shortname, true, array('context' => $coursecontext));
 669         }
 670
 671         if ($this->page->course->id !== SITEID) {
 672             $selected = $this->page->course->id;
 673         } else {
 674             $selected = '';
 675         }
 676         $courseurl = new moodle_url($returnurl);
 677         $courseurl->remove_params('course');
 678         $select = new single_select($courseurl, 'course', $courseoptions, $selected, null);
 679         $select->class = 'cal_courses_flt';
 680         if ($label !== null) {
 681             $select->set_label($label);
 682         } else {
 683             $select->set_label(get_string('listofcourses'), array('class' => 'accesshide'));
 684         }
 685         return $this->output->render($select);
 686     }
 687
 688     /**
 689      * Renders a table containing information about calendar subscriptions.
 690      *
 691      * @param int $courseid
 692      * @param array $subscriptions
 693      * @param string $importresults
 694      * @return string
 695      */
 696     public function subscription_details($courseid, $subscriptions, $importresults = '') {
 697         $table = new html_table();
 698         $table->head  = array(
 699             get_string('colcalendar', 'calendar'),
 700             get_string('collastupdated', 'calendar'),
 701             get_string('eventkind', 'calendar'),
 702             get_string('colpoll', 'calendar'),
 703             get_string('colactions', 'calendar')
 704         );
 705         $table->align = array('left', 'left', 'left', 'center');
 706         $table->width = '100%';
 707         $table->data  = array();
 708
 709         if (empty($subscriptions)) {
 710             $cell = new html_table_cell(get_string('nocalendarsubscriptions', 'calendar'));
 711             $cell->colspan = 4;
 712             $table->data[] = new html_table_row(array($cell));
 713         }
 714         $strnever = new lang_string('never', 'calendar');
 715         foreach ($subscriptions as $sub) {
 716             $label = $sub->name;
 717             if (!empty($sub->url)) {
 718                 $label = html_writer::link($sub->url, $label);
 719             }
 720             if (empty($sub->lastupdated)) {
 721                 $lastupdated = $strnever->out();
 722             } else {
 723                 $lastupdated = userdate($sub->lastupdated, get_string('strftimedatetimeshort', 'langconfig'));
 724             }
 725
 726             $cell = new html_table_cell($this->subscription_action_form($sub, $courseid));
 727             $cell->colspan = 2;
 728             $type = $sub->eventtype . 'events';
 729
 730             $table->data[] = new html_table_row(array(
 731                 new html_table_cell($label),
 732                 new html_table_cell($lastupdated),
 733                 new html_table_cell(get_string($type, 'calendar')),
 734                 $cell
 735             ));
 736         }
 737
 738         $out  = $this->output->box_start('generalbox calendarsubs');
 739
 740         $out .= $importresults;
 741         $out .= html_writer::table($table);
 742         $out .= $this->output->box_end();
 743         return $out;
 744     }
 745
 746     /**
 747      * Creates a form to perform actions on a given subscription.
 748      *
 749      * @param stdClass $subscription
 750      * @param int $courseid
 751      * @return string
 752      */
 753     protected function subscription_action_form($subscription, $courseid) {
 754         // Assemble form for the subscription row.
 755         $html = html_writer::start_tag('form', array('action' => new moodle_url('/calendar/managesubscriptions.php'), 'method' => 'post'));
 756         if (empty($subscription->url)) {
 757             // Don't update an iCal file, which has no URL.
 758             $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'pollinterval', 'value' => '0'));
 759         } else {
 760             // Assemble pollinterval control.
 761             $html .= html_writer::start_tag('div', array('style' => 'float:left;'));
 762             $html .= html_writer::start_tag('select', array('name' => 'pollinterval'));
 763             foreach (calendar_get_pollinterval_choices() as $k => $v) {
 764                 $attributes = array();
 765                 if ($k == $subscription->pollinterval) {
 766                     $attributes['selected'] = 'selected';
 767                 }
 768                 $attributes['value'] = $k;
 769                 $html .= html_writer::tag('option', $v, $attributes);
 770             }
 771             $html .= html_writer::end_tag('select');
 772             $html .= html_writer::end_tag('div');
 773         }
 774         $html .= html_writer::start_tag('div', array('style' => 'float:right;'));
 775         $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'sesskey', 'value' => sesskey()));
 776         $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'course', 'value' => $courseid));
 777         $html .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'id', 'value' => $subscription->id));
 778         if (!empty($subscription->url)) {
 779             $html .= html_writer::tag('button', get_string('update'), array('type'  => 'submit', 'name' => 'action',
 780                                                                             'value' => CALENDAR_SUBSCRIPTION_UPDATE));
 781         }
 782         $html .= html_writer::tag('button', get_string('remove'), array('type'  => 'submit', 'name' => 'action',
 783                                                                         'value' => CALENDAR_SUBSCRIPTION_REMOVE));
 784         $html .= html_writer::end_tag('div');
 785         $html .= html_writer::end_tag('form');
 786         return $html;
 787     }
 788 }