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lib.php
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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Calendar extension
*
* @package core_calendar
* @copyright 2004 Greek School Network (http://www.sch.gr), Jon Papaioannou,
* Avgoustos Tsinakos
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
if (!defined('MOODLE_INTERNAL')) {
die('Direct access to this script is forbidden.'); /// It must be included from a Moodle page
}
/**
* These are read by the administration component to provide default values
*/
/**
* CALENDAR_DEFAULT_UPCOMING_LOOKAHEAD - default value of upcoming event preference
*/
define('CALENDAR_DEFAULT_UPCOMING_LOOKAHEAD', 21);
/**
* CALENDAR_DEFAULT_UPCOMING_MAXEVENTS - default value to display the maximum number of upcoming event
*/
define('CALENDAR_DEFAULT_UPCOMING_MAXEVENTS', 10);
/**
* CALENDAR_DEFAULT_STARTING_WEEKDAY - default value to display the starting weekday
*/
define('CALENDAR_DEFAULT_STARTING_WEEKDAY', 1);
// This is a packed bitfield: day X is "weekend" if $field & (1 << X) is true
// Default value = 65 = 64 + 1 = 2^6 + 2^0 = Saturday & Sunday
/**
* CALENDAR_DEFAULT_WEEKEND - default value for weekend (Saturday & Sunday)
*/
define('CALENDAR_DEFAULT_WEEKEND', 65);
/**
* CALENDAR_URL - path to calendar's folder
*/
define('CALENDAR_URL', $CFG->wwwroot.'/calendar/');
/**
* CALENDAR_TF_24 - Calendar time in 24 hours format
*/
define('CALENDAR_TF_24', '%H:%M');
/**
* CALENDAR_TF_12 - Calendar time in 12 hours format
*/
define('CALENDAR_TF_12', '%I:%M %p');
/**
* CALENDAR_EVENT_GLOBAL - Global calendar event types
*/
define('CALENDAR_EVENT_GLOBAL', 1);
/**
* CALENDAR_EVENT_COURSE - Course calendar event types
*/
define('CALENDAR_EVENT_COURSE', 2);
/**
* CALENDAR_EVENT_GROUP - group calendar event types
*/
define('CALENDAR_EVENT_GROUP', 4);
/**
* CALENDAR_EVENT_USER - user calendar event types
*/
define('CALENDAR_EVENT_USER', 8);
/**
* CALENDAR_IMPORT_FROM_FILE - import the calendar from a file
*/
define('CALENDAR_IMPORT_FROM_FILE', 0);
/**
* CALENDAR_IMPORT_FROM_URL - import the calendar from a URL
*/
define('CALENDAR_IMPORT_FROM_URL', 1);
/**
* CALENDAR_IMPORT_EVENT_UPDATED - imported event was updated
*/
define('CALENDAR_IMPORT_EVENT_UPDATED', 1);
/**
* CALENDAR_IMPORT_EVENT_INSERTED - imported event was added by insert
*/
define('CALENDAR_IMPORT_EVENT_INSERTED', 2);
/**
* CALENDAR_SUBSCRIPTION_UPDATE - Used to represent update action for subscriptions in various forms.
*/
define('CALENDAR_SUBSCRIPTION_UPDATE', 1);
/**
* CALENDAR_SUBSCRIPTION_REMOVE - Used to represent remove action for subscriptions in various forms.
*/
define('CALENDAR_SUBSCRIPTION_REMOVE', 2);
/**
* Return the days of the week
*
* @return array array of days
*/
function calendar_get_days() {
$calendartype = \core_calendar\type_factory::get_calendar_instance();
return $calendartype->get_weekdays();
}
/**
* Get the subscription from a given id
*
* @since Moodle 2.5
* @param int $id id of the subscription
* @return stdClass Subscription record from DB
* @throws moodle_exception for an invalid id
*/
function calendar_get_subscription($id) {
global $DB;
$cache = cache::make('core', 'calendar_subscriptions');
$subscription = $cache->get($id);
if (empty($subscription)) {
$subscription = $DB->get_record('event_subscriptions', array('id' => $id), '*', MUST_EXIST);
// cache the data.
$cache->set($id, $subscription);
}
return $subscription;
}
/**
* Gets the first day of the week
*
* Used to be define('CALENDAR_STARTING_WEEKDAY', blah);
*
* @return int
*/
function calendar_get_starting_weekday() {
$calendartype = \core_calendar\type_factory::get_calendar_instance();
return $calendartype->get_starting_weekday();
}
/**
* Generates the HTML for a miniature calendar
*
* @param array $courses list of course to list events from
* @param array $groups list of group
* @param array $users user's info
* @param int|bool $calmonth calendar month in numeric, default is set to false
* @param int|bool $calyear calendar month in numeric, default is set to false
* @param string|bool $placement the place/page the calendar is set to appear - passed on the the controls function
* @param int|bool $courseid id of the course the calendar is displayed on - passed on the the controls function
* @param int $time the unixtimestamp representing the date we want to view, this is used instead of $calmonth
* and $calyear to support multiple calendars
* @return string $content return html table for mini calendar
*/
function calendar_get_mini($courses, $groups, $users, $calmonth = false, $calyear = false, $placement = false,
$courseid = false, $time = 0) {
global $CFG, $OUTPUT, $PAGE;
// Get the calendar type we are using.
$calendartype = \core_calendar\type_factory::get_calendar_instance();
$display = new stdClass;
// Assume we are not displaying this month for now.
$display->thismonth = false;
$content = '';
// Do this check for backwards compatibility. The core should be passing a timestamp rather than month and year.
// If a month and year are passed they will be in Gregorian.
if (!empty($calmonth) && !empty($calyear)) {
// Ensure it is a valid date, else we will just set it to the current timestamp.
if (checkdate($calmonth, 1, $calyear)) {
$time = make_timestamp($calyear, $calmonth, 1);
} else {
$time = time();
}
$date = usergetdate($time);
if ($calmonth == $date['mon'] && $calyear == $date['year']) {
$display->thismonth = true;
}
// We can overwrite date now with the date used by the calendar type, if it is not Gregorian, otherwise
// there is no need as it is already in Gregorian.
if ($calendartype->get_name() != 'gregorian') {
$date = $calendartype->timestamp_to_date_array($time);
}
} else if (!empty($time)) {
// Get the specified date in the calendar type being used.
$date = $calendartype->timestamp_to_date_array($time);
$thisdate = $calendartype->timestamp_to_date_array(time());
if ($date['month'] == $thisdate['month'] && $date['year'] == $thisdate['year']) {
$display->thismonth = true;
// If we are the current month we want to set the date to the current date, not the start of the month.
$date = $thisdate;
}
} else {
// Get the current date in the calendar type being used.
$time = time();
$date = $calendartype->timestamp_to_date_array($time);
$display->thismonth = true;
}
list($d, $m, $y) = array($date['mday'], $date['mon'], $date['year']); // This is what we want to display.
// Get Gregorian date for the start of the month.
$gregoriandate = $calendartype->convert_to_gregorian($date['year'], $date['mon'], 1);
// Store the gregorian date values to be used later.
list($gy, $gm, $gd, $gh, $gmin) = array($gregoriandate['year'], $gregoriandate['month'], $gregoriandate['day'],
$gregoriandate['hour'], $gregoriandate['minute']);
// Get the max number of days in this month for this calendar type.
$display->maxdays = calendar_days_in_month($m, $y);
// Get the starting week day for this month.
$startwday = dayofweek(1, $m, $y);
// Get the days in a week.
$daynames = calendar_get_days();
// Store the number of days in a week.
$numberofdaysinweek = $calendartype->get_num_weekdays();
// Set the min and max weekday.
$display->minwday = calendar_get_starting_weekday();
$display->maxwday = $display->minwday + ($numberofdaysinweek - 1);
// These are used for DB queries, so we want unixtime, so we need to use Gregorian dates.
$display->tstart = make_timestamp($gy, $gm, $gd, $gh, $gmin, 0);
$display->tend = $display->tstart + ($display->maxdays * DAYSECS) - 1;
// Align the starting weekday to fall in our display range
// This is simple, not foolproof.
if ($startwday < $display->minwday) {
$startwday += $numberofdaysinweek;
}
// Get the events matching our criteria. Don't forget to offset the timestamps for the user's TZ!
$events = calendar_get_events($display->tstart, $display->tend, $users, $groups, $courses);
// Set event course class for course events
if (!empty($events)) {
foreach ($events as $eventid => $event) {
if (!empty($event->modulename)) {
$cm = get_coursemodule_from_instance($event->modulename, $event->instance);
if (!\core_availability\info_module::is_user_visible($cm, 0, false)) {
unset($events[$eventid]);
}
}
}
}
// This is either a genius idea or an idiot idea: in order to not complicate things, we use this rule: if, after
// possibly removing SITEID from $courses, there is only one course left, then clicking on a day in the month
// will also set the $SESSION->cal_courses_shown variable to that one course. Otherwise, we 'd need to add extra
// arguments to this function.
$hrefparams = array();
if(!empty($courses)) {
$courses = array_diff($courses, array(SITEID));
if(count($courses) == 1) {
$hrefparams['course'] = reset($courses);
}
}
// We want to have easy access by day, since the display is on a per-day basis.
calendar_events_by_day($events, $m, $y, $eventsbyday, $durationbyday, $typesbyday, $courses);
// Accessibility: added summary and <abbr> elements.
$summary = get_string('calendarheading', 'calendar', userdate($display->tstart, get_string('strftimemonthyear')));
// Begin table.
$content .= '<table class="minicalendar calendartable" summary="' . $summary . '">';
if (($placement !== false) && ($courseid !== false)) {
$content .= '<caption>'. calendar_top_controls($placement, array('id' => $courseid, 'time' => $time)) .'</caption>';
}
$content .= '<tr class="weekdays">'; // Header row: day names
// Print out the names of the weekdays.
for ($i = $display->minwday; $i <= $display->maxwday; ++$i) {
$pos = $i % $numberofdaysinweek;
$content .= '<th scope="col"><abbr title="'. $daynames[$pos]['fullname'] .'">'.
$daynames[$pos]['shortname'] ."</abbr></th>\n";
}
$content .= '</tr><tr>'; // End of day names; prepare for day numbers
// For the table display. $week is the row; $dayweek is the column.
$dayweek = $startwday;
// Paddding (the first week may have blank days in the beginning)
for($i = $display->minwday; $i < $startwday; ++$i) {
$content .= '<td class="dayblank"> </td>'."\n";
}
$weekend = CALENDAR_DEFAULT_WEEKEND;
if (isset($CFG->calendar_weekend)) {
$weekend = intval($CFG->calendar_weekend);
}
// Now display all the calendar
$daytime = strtotime('-1 day', $display->tstart);
for($day = 1; $day <= $display->maxdays; ++$day, ++$dayweek) {
$cellattributes = array();
$daytime = strtotime('+1 day', $daytime);
if($dayweek > $display->maxwday) {
// We need to change week (table row)
$content .= '</tr><tr>';
$dayweek = $display->minwday;
}
// Reset vars.
if ($weekend & (1 << ($dayweek % $numberofdaysinweek))) {
// Weekend. This is true no matter what the exact range is.
$class = 'weekend day';
} else {
// Normal working day.
$class = 'day';
}
$eventids = array();
if (!empty($eventsbyday[$day])) {
$eventids = $eventsbyday[$day];
}
if (!empty($durationbyday[$day])) {
$eventids = array_unique(array_merge($eventids, $durationbyday[$day]));
}
$finishclass = false;
if (!empty($eventids)) {
// There is at least one event on this day.
$class .= ' hasevent';
$hrefparams['view'] = 'day';
$dayhref = calendar_get_link_href(new moodle_url(CALENDAR_URL . 'view.php', $hrefparams), 0, 0, 0, $daytime);
$popupcontent = '';
foreach ($eventids as $eventid) {
if (!isset($events[$eventid])) {
continue;
}
$event = new calendar_event($events[$eventid]);
$popupalt = '';
$component = 'moodle';
if (!empty($event->modulename)) {
$popupicon = 'icon';
$popupalt = $event->modulename;
$component = $event->modulename;
} else if ($event->courseid == SITEID) { // Site event.
$popupicon = 'i/siteevent';
} else if ($event->courseid != 0 && $event->courseid != SITEID && $event->groupid == 0) { // Course event.
$popupicon = 'i/courseevent';
} else if ($event->groupid) { // Group event.
$popupicon = 'i/groupevent';
} else { // Must be a user event.
$popupicon = 'i/userevent';
}
if ($event->timeduration) {
$startdate = $calendartype->timestamp_to_date_array($event->timestart);
$enddate = $calendartype->timestamp_to_date_array($event->timestart + $event->timeduration - 1);
if ($enddate['mon'] == $m && $enddate['year'] == $y && $enddate['mday'] == $day) {
$finishclass = true;
}
}
$dayhref->set_anchor('event_'.$event->id);
$popupcontent .= html_writer::start_tag('div');
$popupcontent .= $OUTPUT->pix_icon($popupicon, $popupalt, $component);
// Show ical source if needed.
if (!empty($event->subscription) && $CFG->calendar_showicalsource) {
$a = new stdClass();
$a->name = format_string($event->name, true);
$a->source = $event->subscription->name;
$name = get_string('namewithsource', 'calendar', $a);
} else {
if ($finishclass) {
$samedate = $startdate['mon'] == $enddate['mon'] &&
$startdate['year'] == $enddate['year'] &&
$startdate['mday'] == $enddate['mday'];
if ($samedate) {
$name = format_string($event->name, true);
} else {
$name = format_string($event->name, true) . ' (' . get_string('eventendtime', 'calendar') . ')';
}
} else {
$name = format_string($event->name, true);
}
}
$popupcontent .= html_writer::link($dayhref, $name);
$popupcontent .= html_writer::end_tag('div');
}
if ($display->thismonth && $day == $d) {
$popupdata = calendar_get_popup(true, $daytime, $popupcontent);
} else {
$popupdata = calendar_get_popup(false, $daytime, $popupcontent);
}
$cellattributes = array_merge($cellattributes, $popupdata);
// Class and cell content
if(isset($typesbyday[$day]['startglobal'])) {
$class .= ' calendar_event_global';
} else if(isset($typesbyday[$day]['startcourse'])) {
$class .= ' calendar_event_course';
} else if(isset($typesbyday[$day]['startgroup'])) {
$class .= ' calendar_event_group';
} else if(isset($typesbyday[$day]['startuser'])) {
$class .= ' calendar_event_user';
}
if ($finishclass) {
$class .= ' duration_finish';
}
$cell = html_writer::link($dayhref, $day);
} else {
$cell = $day;
}
$durationclass = false;
if (isset($typesbyday[$day]['durationglobal'])) {
$durationclass = ' duration_global';
} else if(isset($typesbyday[$day]['durationcourse'])) {
$durationclass = ' duration_course';
} else if(isset($typesbyday[$day]['durationgroup'])) {
$durationclass = ' duration_group';
} else if(isset($typesbyday[$day]['durationuser'])) {
$durationclass = ' duration_user';
}
if ($durationclass) {
$class .= ' duration '.$durationclass;
}
// If event has a class set then add it to the table day <td> tag
// Note: only one colour for minicalendar
if(isset($eventsbyday[$day])) {
foreach($eventsbyday[$day] as $eventid) {
if (!isset($events[$eventid])) {
continue;
}
$event = $events[$eventid];
if (!empty($event->class)) {
$class .= ' '.$event->class;
}
break;
}
}
if ($display->thismonth && $day == $d) {
// The current cell is for today - add appropriate classes and additional information for styling.
$class .= ' today';
$today = get_string('today', 'calendar').' '.userdate(time(), get_string('strftimedayshort'));
if (!isset($eventsbyday[$day]) && !isset($durationbyday[$day])) {
$class .= ' eventnone';
$popupdata = calendar_get_popup(true, false);
$cellattributes = array_merge($cellattributes, $popupdata);
$cell = html_writer::link('#', $day);
}
$cell = get_accesshide($today . ' ') . $cell;
}
// Just display it
$cellattributes['class'] = $class;
$content .= html_writer::tag('td', $cell, $cellattributes);
}
// Paddding (the last week may have blank days at the end)
for($i = $dayweek; $i <= $display->maxwday; ++$i) {
$content .= '<td class="dayblank"> </td>';
}
$content .= '</tr>'; // Last row ends
$content .= '</table>'; // Tabular display of days ends
static $jsincluded = false;
if (!$jsincluded) {
$PAGE->requires->yui_module('moodle-calendar-info', 'Y.M.core_calendar.info.init');
$jsincluded = true;
}
return $content;
}
/**
* Gets the calendar popup
*
* It called at multiple points in from calendar_get_mini.
* Copied and modified from calendar_get_mini.
*
* @param bool $is_today false except when called on the current day.
* @param mixed $event_timestart $events[$eventid]->timestart, OR false if there are no events.
* @param string $popupcontent content for the popup window/layout.
* @return string eventid for the calendar_tooltip popup window/layout.
*/
function calendar_get_popup($today = false, $timestart, $popupcontent = '') {
global $PAGE;
$popupcaption = '';
if ($today) {
$popupcaption = get_string('today', 'calendar') . ' ';
}
if (false === $timestart) {
$popupcaption .= userdate(time(), get_string('strftimedayshort'));
$popupcontent = get_string('eventnone', 'calendar');
} else {
$popupcaption .= get_string('eventsfor', 'calendar', userdate($timestart, get_string('strftimedayshort')));
}
return array(
'data-core_calendar-title' => $popupcaption,
'data-core_calendar-popupcontent' => $popupcontent,
);
}
/**
* Gets the calendar upcoming event
*
* @param array $courses array of courses
* @param array|int|bool $groups array of groups, group id or boolean for all/no group events
* @param array|int|bool $users array of users, user id or boolean for all/no user events
* @param int $daysinfuture number of days in the future we 'll look
* @param int $maxevents maximum number of events
* @param int $fromtime start time
* @return array $output array of upcoming events
*/
function calendar_get_upcoming($courses, $groups, $users, $daysinfuture, $maxevents, $fromtime=0) {
global $CFG, $COURSE, $DB;
$display = new stdClass;
$display->range = $daysinfuture; // How many days in the future we 'll look
$display->maxevents = $maxevents;
$output = array();
// Prepare "course caching", since it may save us a lot of queries
$coursecache = array();
$processed = 0;
$now = time(); // We 'll need this later
$usermidnighttoday = usergetmidnight($now);
if ($fromtime) {
$display->tstart = $fromtime;
} else {
$display->tstart = $usermidnighttoday;
}
// This works correctly with respect to the user's DST, but it is accurate
// only because $fromtime is always the exact midnight of some day!
$display->tend = usergetmidnight($display->tstart + DAYSECS * $display->range + 3 * HOURSECS) - 1;
// Get the events matching our criteria
$events = calendar_get_events($display->tstart, $display->tend, $users, $groups, $courses);
// This is either a genius idea or an idiot idea: in order to not complicate things, we use this rule: if, after
// possibly removing SITEID from $courses, there is only one course left, then clicking on a day in the month
// will also set the $SESSION->cal_courses_shown variable to that one course. Otherwise, we 'd need to add extra
// arguments to this function.
$hrefparams = array();
if(!empty($courses)) {
$courses = array_diff($courses, array(SITEID));
if(count($courses) == 1) {
$hrefparams['course'] = reset($courses);
}
}
if ($events !== false) {
$modinfo = get_fast_modinfo($COURSE);
foreach($events as $event) {
if (!empty($event->modulename)) {
if ($event->courseid == $COURSE->id) {
if (isset($modinfo->instances[$event->modulename][$event->instance])) {
$cm = $modinfo->instances[$event->modulename][$event->instance];
if (!$cm->uservisible) {
continue;
}
}
} else {
if (!$cm = get_coursemodule_from_instance($event->modulename, $event->instance)) {
continue;
}
if (!\core_availability\info_module::is_user_visible($cm, 0, false)) {
continue;
}
}
}
if ($processed >= $display->maxevents) {
break;
}
$event->time = calendar_format_event_time($event, $now, $hrefparams);
$output[] = $event;
++$processed;
}
}
return $output;
}
/**
* Get a HTML link to a course.
*
* @param int $courseid the course id
* @return string a link to the course (as HTML); empty if the course id is invalid
*/
function calendar_get_courselink($courseid) {
if (!$courseid) {
return '';
}
calendar_get_course_cached($coursecache, $courseid);
$context = context_course::instance($courseid);
$fullname = format_string($coursecache[$courseid]->fullname, true, array('context' => $context));
$url = new moodle_url('/course/view.php', array('id' => $courseid));
$link = html_writer::link($url, $fullname);
return $link;
}
/**
* Add calendar event metadata
*
* @param stdClass $event event info
* @return stdClass $event metadata
*/
function calendar_add_event_metadata($event) {
global $CFG, $OUTPUT;
//Support multilang in event->name
$event->name = format_string($event->name,true);
if(!empty($event->modulename)) { // Activity event
// The module name is set. I will assume that it has to be displayed, and
// also that it is an automatically-generated event. And of course that the
// fields for get_coursemodule_from_instance are set correctly.
$module = calendar_get_module_cached($coursecache, $event->modulename, $event->instance);
if ($module === false) {
return;
}
$modulename = get_string('modulename', $event->modulename);
if (get_string_manager()->string_exists($event->eventtype, $event->modulename)) {
// will be used as alt text if the event icon
$eventtype = get_string($event->eventtype, $event->modulename);
} else {
$eventtype = '';
}
$icon = $OUTPUT->pix_url('icon', $event->modulename) . '';
$event->icon = '<img src="'.$icon.'" alt="'.$eventtype.'" title="'.$modulename.'" class="icon" />';
$event->referer = '<a href="'.$CFG->wwwroot.'/mod/'.$event->modulename.'/view.php?id='.$module->id.'">'.$event->name.'</a>';
$event->courselink = calendar_get_courselink($module->course);
$event->cmid = $module->id;
} else if($event->courseid == SITEID) { // Site event
$event->icon = '<img src="'.$OUTPUT->pix_url('i/siteevent') . '" alt="'.get_string('globalevent', 'calendar').'" class="icon" />';
$event->cssclass = 'calendar_event_global';
} else if($event->courseid != 0 && $event->courseid != SITEID && $event->groupid == 0) { // Course event
$event->icon = '<img src="'.$OUTPUT->pix_url('i/courseevent') . '" alt="'.get_string('courseevent', 'calendar').'" class="icon" />';
$event->courselink = calendar_get_courselink($event->courseid);
$event->cssclass = 'calendar_event_course';
} else if ($event->groupid) { // Group event
if ($group = calendar_get_group_cached($event->groupid)) {
$groupname = format_string($group->name, true, context_course::instance($group->courseid));
} else {
$groupname = '';
}
$event->icon = html_writer::empty_tag('image', array('src' => $OUTPUT->pix_url('i/groupevent'),
'alt' => get_string('groupevent', 'calendar'), 'title' => $groupname, 'class' => 'icon'));
$event->courselink = calendar_get_courselink($event->courseid) . ', ' . $groupname;
$event->cssclass = 'calendar_event_group';
} else if($event->userid) { // User event
$event->icon = '<img src="'.$OUTPUT->pix_url('i/userevent') . '" alt="'.get_string('userevent', 'calendar').'" class="icon" />';
$event->cssclass = 'calendar_event_user';
}
return $event;
}
/**
* Get calendar events
*
* @param int $tstart Start time of time range for events
* @param int $tend End time of time range for events
* @param array|int|boolean $users array of users, user id or boolean for all/no user events
* @param array|int|boolean $groups array of groups, group id or boolean for all/no group events
* @param array|int|boolean $courses array of courses, course id or boolean for all/no course events
* @param boolean $withduration whether only events starting within time range selected
* or events in progress/already started selected as well
* @param boolean $ignorehidden whether to select only visible events or all events
* @return array $events of selected events or an empty array if there aren't any (or there was an error)
*/
function calendar_get_events($tstart, $tend, $users, $groups, $courses, $withduration=true, $ignorehidden=true) {
global $DB;
$whereclause = '';
$params = array();
// Quick test.
if (empty($users) && empty($groups) && empty($courses)) {
return array();
}
if ((is_array($users) && !empty($users)) or is_numeric($users)) {
// Events from a number of users
if(!empty($whereclause)) $whereclause .= ' OR';
list($insqlusers, $inparamsusers) = $DB->get_in_or_equal($users, SQL_PARAMS_NAMED);
$whereclause .= " (userid $insqlusers AND courseid = 0 AND groupid = 0)";
$params = array_merge($params, $inparamsusers);
} else if($users === true) {
// Events from ALL users
if(!empty($whereclause)) $whereclause .= ' OR';
$whereclause .= ' (userid != 0 AND courseid = 0 AND groupid = 0)';
} else if($users === false) {
// No user at all, do nothing
}
if ((is_array($groups) && !empty($groups)) or is_numeric($groups)) {
// Events from a number of groups
if(!empty($whereclause)) $whereclause .= ' OR';
list($insqlgroups, $inparamsgroups) = $DB->get_in_or_equal($groups, SQL_PARAMS_NAMED);
$whereclause .= " groupid $insqlgroups ";
$params = array_merge($params, $inparamsgroups);
} else if($groups === true) {
// Events from ALL groups
if(!empty($whereclause)) $whereclause .= ' OR ';
$whereclause .= ' groupid != 0';
}
// boolean false (no groups at all): we don't need to do anything
if ((is_array($courses) && !empty($courses)) or is_numeric($courses)) {
if(!empty($whereclause)) $whereclause .= ' OR';
list($insqlcourses, $inparamscourses) = $DB->get_in_or_equal($courses, SQL_PARAMS_NAMED);
$whereclause .= " (groupid = 0 AND courseid $insqlcourses)";
$params = array_merge($params, $inparamscourses);
} else if ($courses === true) {
// Events from ALL courses
if(!empty($whereclause)) $whereclause .= ' OR';
$whereclause .= ' (groupid = 0 AND courseid != 0)';
}
// Security check: if, by now, we have NOTHING in $whereclause, then it means
// that NO event-selecting clauses were defined. Thus, we won't be returning ANY
// events no matter what. Allowing the code to proceed might return a completely
// valid query with only time constraints, thus selecting ALL events in that time frame!
if(empty($whereclause)) {
return array();
}
if($withduration) {
$timeclause = '(timestart >= '.$tstart.' OR timestart + timeduration > '.$tstart.') AND timestart <= '.$tend;
}
else {
$timeclause = 'timestart >= '.$tstart.' AND timestart <= '.$tend;
}
if(!empty($whereclause)) {
// We have additional constraints
$whereclause = $timeclause.' AND ('.$whereclause.')';
}
else {
// Just basic time filtering
$whereclause = $timeclause;
}
if ($ignorehidden) {
$whereclause .= ' AND visible = 1';
}
$events = $DB->get_records_select('event', $whereclause, $params, 'timestart');
if ($events === false) {
$events = array();
}
return $events;
}
/** Get calendar events by id
*
* @since Moodle 2.5
* @param array $eventids list of event ids
* @return array Array of event entries, empty array if nothing found
*/
function calendar_get_events_by_id($eventids) {
global $DB;
if (!is_array($eventids) || empty($eventids)) {
return array();
}
list($wheresql, $params) = $DB->get_in_or_equal($eventids);
$wheresql = "id $wheresql";
return $DB->get_records_select('event', $wheresql, $params);
}
/**
* Get control options for Calendar
*
* @param string $type of calendar
* @param array $data calendar information
* @return string $content return available control for the calender in html
*/
function calendar_top_controls($type, $data) {
global $PAGE, $OUTPUT;
// Get the calendar type we are using.
$calendartype = \core_calendar\type_factory::get_calendar_instance();
$content = '';
// Ensure course id passed if relevant.
$courseid = '';
if (!empty($data['id'])) {
$courseid = '&course='.$data['id'];
}
// If we are passing a month and year then we need to convert this to a timestamp to
// support multiple calendars. No where in core should these be passed, this logic
// here is for third party plugins that may use this function.
if (!empty($data['m']) && !empty($date['y'])) {
if (!isset($data['d'])) {
$data['d'] = 1;
}
if (!checkdate($data['m'], $data['d'], $data['y'])) {
$time = time();
} else {
$time = make_timestamp($data['y'], $data['m'], $data['d']);
}
} else if (!empty($data['time'])) {
$time = $data['time'];
} else {
$time = time();
}
// Get the date for the calendar type.
$date = $calendartype->timestamp_to_date_array($time);
$urlbase = $PAGE->url;
// We need to get the previous and next months in certain cases.
if ($type == 'frontpage' || $type == 'course' || $type == 'month') {
$prevmonth = calendar_sub_month($date['mon'], $date['year']);
$prevmonthtime = $calendartype->convert_to_gregorian($prevmonth[1], $prevmonth[0], 1);
$prevmonthtime = make_timestamp($prevmonthtime['year'], $prevmonthtime['month'], $prevmonthtime['day'],
$prevmonthtime['hour'], $prevmonthtime['minute']);
$nextmonth = calendar_add_month($date['mon'], $date['year']);
$nextmonthtime = $calendartype->convert_to_gregorian($nextmonth[1], $nextmonth[0], 1);
$nextmonthtime = make_timestamp($nextmonthtime['year'], $nextmonthtime['month'], $nextmonthtime['day'],
$nextmonthtime['hour'], $nextmonthtime['minute']);
}
switch ($type) {
case 'frontpage':
$prevlink = calendar_get_link_previous(get_string('monthprev', 'access'), $urlbase, false, false, false, true, $prevmonthtime);
$nextlink = calendar_get_link_next(get_string('monthnext', 'access'), $urlbase, false, false, false, true, $nextmonthtime);
$calendarlink = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', array('view' => 'month')), false, false, false, $time);
if (!empty($data['id'])) {
$calendarlink->param('course', $data['id']);
}
if (right_to_left()) {
$left = $nextlink;
$right = $prevlink;
} else {
$left = $prevlink;
$right = $nextlink;
}
$content .= html_writer::start_tag('div', array('class'=>'calendar-controls'));
$content .= $left.'<span class="hide"> | </span>';
$content .= html_writer::tag('span', html_writer::link($calendarlink, userdate($time, get_string('strftimemonthyear')), array('title'=>get_string('monththis','calendar'))), array('class'=>'current'));
$content .= '<span class="hide"> | </span>'. $right;
$content .= "<span class=\"clearer\"><!-- --></span>\n";
$content .= html_writer::end_tag('div');
break;
case 'course':
$prevlink = calendar_get_link_previous(get_string('monthprev', 'access'), $urlbase, false, false, false, true, $prevmonthtime);
$nextlink = calendar_get_link_next(get_string('monthnext', 'access'), $urlbase, false, false, false, true, $nextmonthtime);
$calendarlink = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', array('view' => 'month')), false, false, false, $time);
if (!empty($data['id'])) {
$calendarlink->param('course', $data['id']);
}
if (right_to_left()) {
$left = $nextlink;
$right = $prevlink;
} else {
$left = $prevlink;
$right = $nextlink;
}
$content .= html_writer::start_tag('div', array('class'=>'calendar-controls'));
$content .= $left.'<span class="hide"> | </span>';
$content .= html_writer::tag('span', html_writer::link($calendarlink, userdate($time, get_string('strftimemonthyear')), array('title'=>get_string('monththis','calendar'))), array('class'=>'current'));
$content .= '<span class="hide"> | </span>'. $right;
$content .= "<span class=\"clearer\"><!-- --></span>";
$content .= html_writer::end_tag('div');
break;
case 'upcoming':
$calendarlink = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', array('view' => 'upcoming')), false, false, false, $time);
if (!empty($data['id'])) {
$calendarlink->param('course', $data['id']);
}
$calendarlink = html_writer::link($calendarlink, userdate($time, get_string('strftimemonthyear')));
$content .= html_writer::tag('div', $calendarlink, array('class'=>'centered'));
break;
case 'display':
$calendarlink = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', array('view' => 'month')), false, false, false, $time);
if (!empty($data['id'])) {
$calendarlink->param('course', $data['id']);
}
$calendarlink = html_writer::link($calendarlink, userdate($time, get_string('strftimemonthyear')));
$content .= html_writer::tag('h3', $calendarlink);
break;
case 'month':
$prevlink = calendar_get_link_previous(userdate($prevmonthtime, get_string('strftimemonthyear')), 'view.php?view=month'.$courseid.'&', false, false, false, false, $prevmonthtime);
$nextlink = calendar_get_link_next(userdate($nextmonthtime, get_string('strftimemonthyear')), 'view.php?view=month'.$courseid.'&', false, false, false, false, $nextmonthtime);
if (right_to_left()) {
$left = $nextlink;
$right = $prevlink;
} else {
$left = $prevlink;
$right = $nextlink;
}
$content .= html_writer::start_tag('div', array('class'=>'calendar-controls'));
$content .= $left . '<span class="hide"> | </span>';
$content .= $OUTPUT->heading(userdate($time, get_string('strftimemonthyear')), 2, 'current');
$content .= '<span class="hide"> | </span>' . $right;
$content .= '<span class="clearer"><!-- --></span>';
$content .= html_writer::end_tag('div')."\n";
break;
case 'day':
$days = calendar_get_days();
$prevtimestamp = strtotime('-1 day', $time);
$nexttimestamp = strtotime('+1 day', $time);
$prevdate = $calendartype->timestamp_to_date_array($prevtimestamp);
$nextdate = $calendartype->timestamp_to_date_array($nexttimestamp);
$prevname = $days[$prevdate['wday']]['fullname'];
$nextname = $days[$nextdate['wday']]['fullname'];
$prevlink = calendar_get_link_previous($prevname, 'view.php?view=day'.$courseid.'&', false, false, false, false, $prevtimestamp);
$nextlink = calendar_get_link_next($nextname, 'view.php?view=day'.$courseid.'&', false, false, false, false, $nexttimestamp);
if (right_to_left()) {
$left = $nextlink;
$right = $prevlink;
} else {
$left = $prevlink;
$right = $nextlink;
}
$content .= html_writer::start_tag('div', array('class'=>'calendar-controls'));
$content .= $left;
$content .= '<span class="hide"> | </span><span class="current">'.userdate($time, get_string('strftimedaydate')).'</span>';
$content .= '<span class="hide"> | </span>'. $right;
$content .= "<span class=\"clearer\"><!-- --></span>";
$content .= html_writer::end_tag('div')."\n";
break;
}
return $content;