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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
*/
/**
* 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_STARTING_WEEKDAY - has since been deprecated please call calendar_get_starting_weekday() instead
*
* @deprecated Moodle 2.0 MDL-24284- please do not use this function any more.
* @todo MDL-31132 This will be deleted in Moodle 2.3.
* @see calendar_get_starting_weekday()
*/
define('CALENDAR_STARTING_WEEKDAY', CALENDAR_DEFAULT_STARTING_WEEKDAY);
/**
* Return the days of the week
*
* @return array array of days
*/
function calendar_get_days() {
return array('sunday', 'monday', 'tuesday', 'wednesday', 'thursday', 'friday', 'saturday');
}
/**
* Gets the first day of the week
*
* Used to be define('CALENDAR_STARTING_WEEKDAY', blah);
*
* @return int
*/
function calendar_get_starting_weekday() {
global $CFG;
if (isset($CFG->calendar_startwday)) {
$firstday = $CFG->calendar_startwday;
} else {
$firstday = get_string('firstdayofweek', 'langconfig');
}
if(!is_numeric($firstday)) {
return CALENDAR_DEFAULT_STARTING_WEEKDAY;
} else {
return intval($firstday) % 7;
}
}
/**
* Generates the HTML for a miniature calendar
*
* @param array $courses list of course
* @param array $groups list of group
* @param array $users user's info
* @param int $cal_month calendar month in numeric, default is set to false
* @param int $cal_year calendar month in numeric, default is set to false
* @return string $content return html table for mini calendar
*/
function calendar_get_mini($courses, $groups, $users, $cal_month = false, $cal_year = false) {
global $CFG, $USER, $OUTPUT;
$display = new stdClass;
$display->minwday = get_user_preferences('calendar_startwday', calendar_get_starting_weekday());
$display->maxwday = $display->minwday + 6;
$content = '';
if(!empty($cal_month) && !empty($cal_year)) {
$thisdate = usergetdate(time()); // Date and time the user sees at his location
if($cal_month == $thisdate['mon'] && $cal_year == $thisdate['year']) {
// Navigated to this month
$date = $thisdate;
$display->thismonth = true;
} else {
// Navigated to other month, let's do a nice trick and save us a lot of work...
if(!checkdate($cal_month, 1, $cal_year)) {
$date = array('mday' => 1, 'mon' => $thisdate['mon'], 'year' => $thisdate['year']);
$display->thismonth = true;
} else {
$date = array('mday' => 1, 'mon' => $cal_month, 'year' => $cal_year);
$display->thismonth = false;
}
}
} else {
$date = usergetdate(time()); // Date and time the user sees at his location
$display->thismonth = true;
}
// Fill in the variables we 're going to use, nice and tidy
list($d, $m, $y) = array($date['mday'], $date['mon'], $date['year']); // This is what we want to display
$display->maxdays = calendar_days_in_month($m, $y);
if (get_user_timezone_offset() < 99) {
// We 'll keep these values as GMT here, and offset them when the time comes to query the db
$display->tstart = gmmktime(0, 0, 0, $m, 1, $y); // This is GMT
$display->tend = gmmktime(23, 59, 59, $m, $display->maxdays, $y); // GMT
} else {
// no timezone info specified
$display->tstart = mktime(0, 0, 0, $m, 1, $y);
$display->tend = mktime(23, 59, 59, $m, $display->maxdays, $y);
}
$startwday = dayofweek(1, $m, $y);
// Align the starting weekday to fall in our display range
// This is simple, not foolproof.
if($startwday < $display->minwday) {
$startwday += 7;
}
// TODO: THIS IS TEMPORARY CODE!
// [pj] I was just reading through this and realized that I when writing this code I was probably
// asking for trouble, as all these time manipulations seem to be unnecessary and a simple
// make_timestamp would accomplish the same thing. So here goes a test:
//$test_start = make_timestamp($y, $m, 1);
//$test_end = make_timestamp($y, $m, $display->maxdays, 23, 59, 59);
//if($test_start != usertime($display->tstart) - dst_offset_on($display->tstart)) {
//notify('Failed assertion in calendar/lib.php line 126; display->tstart = '.$display->tstart.', dst_offset = '.dst_offset_on($display->tstart).', usertime = '.usertime($display->tstart).', make_t = '.$test_start);
//}
//if($test_end != usertime($display->tend) - dst_offset_on($display->tend)) {
//notify('Failed assertion in calendar/lib.php line 130; display->tend = '.$display->tend.', dst_offset = '.dst_offset_on($display->tend).', usertime = '.usertime($display->tend).', make_t = '.$test_end);
//}
// Get the events matching our criteria. Don't forget to offset the timestamps for the user's TZ!
$events = calendar_get_events(
usertime($display->tstart) - dst_offset_on($display->tstart),
usertime($display->tend) - dst_offset_on($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, $event->instance);
if (!groups_course_module_visible($cm)) {
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.
// Arguments passed by reference.
//calendar_events_by_day($events, $display->tstart, $eventsbyday, $durationbyday, $typesbyday);
calendar_events_by_day($events, $m, $y, $eventsbyday, $durationbyday, $typesbyday, $courses);
//Accessibility: added summary and <abbr> elements.
$days_title = calendar_get_days();
$summary = get_string('calendarheading', 'calendar', userdate(make_timestamp($y, $m), get_string('strftimemonthyear')));
$content .= '<table class="minicalendar calendartable" summary="'.$summary.'">'; // Begin table
$content .= '<tr class="weekdays">'; // Header row: day names
// Print out the names of the weekdays
$days = array('sun', 'mon', 'tue', 'wed', 'thu', 'fri', 'sat');
for($i = $display->minwday; $i <= $display->maxwday; ++$i) {
// This uses the % operator to get the correct weekday no matter what shift we have
// applied to the $display->minwday : $display->maxwday range from the default 0 : 6
$content .= '<th scope="col"><abbr title="'. get_string($days_title[$i % 7], 'calendar') .'">'.
get_string($days[$i % 7], 'calendar') ."</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">&nbsp;</td>'."\n";
}
$weekend = CALENDAR_DEFAULT_WEEKEND;
if (isset($CFG->calendar_weekend)) {
$weekend = intval($CFG->calendar_weekend);
}
// Now display all the calendar
for($day = 1; $day <= $display->maxdays; ++$day, ++$dayweek) {
if($dayweek > $display->maxwday) {
// We need to change week (table row)
$content .= '</tr><tr>';
$dayweek = $display->minwday;
}
// Reset vars
$cell = '';
if ($weekend & (1 << ($dayweek % 7))) {
// Weekend. This is true no matter what the exact range is.
$class = 'weekend day';
} else {
// Normal working day.
$class = 'day';
}
// Special visual fx if an event is defined
if(isset($eventsbyday[$day])) {
$class .= ' hasevent';
$hrefparams['view'] = 'day';
$dayhref = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', $hrefparams), $day, $m, $y);
$popupcontent = '';
foreach($eventsbyday[$day] as $eventid) {
if (!isset($events[$eventid])) {
continue;
}
$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
$popupicon = 'c/site';
} else if ($event->courseid != 0 && $event->courseid != SITEID && $event->groupid == 0) { // Course event
$popupicon = 'c/course';
} else if ($event->groupid) { // Group event
$popupicon = 'c/group';
} else if ($event->userid) { // User event
$popupicon = 'c/user';
}
$dayhref->set_anchor('event_'.$event->id);
$popupcontent .= html_writer::start_tag('div');
$popupcontent .= $OUTPUT->pix_icon($popupicon, $popupalt, $component);
$popupcontent .= html_writer::link($dayhref, format_string($event->name, true));
$popupcontent .= html_writer::end_tag('div');
}
//Accessibility: functionality moved to calendar_get_popup.
if($display->thismonth && $day == $d) {
$popup = calendar_get_popup(true, $events[$eventid]->timestart, $popupcontent);
} else {
$popup = calendar_get_popup(false, $events[$eventid]->timestart, $popupcontent);
}
// Class and cell content
if(isset($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';
}
$cell = '<a href="'.(string)$dayhref.'" '.$popup.'>'.$day.'</a>';
} 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;
}
}
// Special visual fx for today
//Accessibility: hidden text for today, and popup.
if($display->thismonth && $day == $d) {
$class .= ' today';
$today = get_string('today', 'calendar').' '.userdate(time(), get_string('strftimedayshort'));
if(! isset($eventsbyday[$day])) {
$class .= ' eventnone';
$popup = calendar_get_popup(true, false);
$cell = '<a href="#" '.$popup.'>'.$day.'</a>';
}
$cell = get_accesshide($today.' ').$cell;
}
// Just display it
if(!empty($class)) {
$class = ' class="'.$class.'"';
}
$content .= '<td'.$class.'>'.$cell."</td>\n";
}
// Paddding (the last week may have blank days at the end)
for($i = $dayweek; $i <= $display->maxwday; ++$i) {
$content .= '<td class="dayblank">&nbsp;</td>';
}
$content .= '</tr>'; // Last row ends
$content .= '</table>'; // Tabular display of days ends
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 $popupcontent content for the popup window/layout
* @return string of eventid for the calendar_tooltip popup window/layout
*/
function calendar_get_popup($is_today, $event_timestart, $popupcontent='') {
global $PAGE;
static $popupcount;
if ($popupcount === null) {
$popupcount = 1;
}
$popupcaption = '';
if($is_today) {
$popupcaption = get_string('today', 'calendar').' ';
}
if (false === $event_timestart) {
$popupcaption .= userdate(time(), get_string('strftimedayshort'));
$popupcontent = get_string('eventnone', 'calendar');
} else {
$popupcaption .= get_string('eventsfor', 'calendar', userdate($event_timestart, get_string('strftimedayshort')));
}
$id = 'calendar_tooltip_'.$popupcount;
$PAGE->requires->yui_module('moodle-calendar-eventmanager', 'M.core_calendar.add_event', array(array('eventId'=>$id,'title'=>$popupcaption, 'content'=>$popupcontent)));
$popupcount++;
return 'id="'.$id.'"';
}
/**
* 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, $event->instance)) {
continue;
}
if (!coursemodule_visible_for_user($cm)) {
continue;
}
}
if ($event->modulename == 'assignment'){
// create calendar_event to test edit_event capability
// this new event will also prevent double creation of calendar_event object
$checkevent = new calendar_event($event);
// TODO: rewrite this hack somehow
if (!calendar_edit_event_allowed($checkevent)){ // cannot manage entries, eg. student
if (!$assignment = $DB->get_record('assignment', array('id'=>$event->instance))) {
// print_error("invalidid", 'assignment');
continue;
}
// assign assignment to assignment object to use hidden_is_hidden method
require_once($CFG->dirroot.'/mod/assignment/lib.php');
if (!file_exists($CFG->dirroot.'/mod/assignment/type/'.$assignment->assignmenttype.'/assignment.class.php')) {
continue;
}
require_once ($CFG->dirroot.'/mod/assignment/type/'.$assignment->assignmenttype.'/assignment.class.php');
$assignmentclass = 'assignment_'.$assignment->assignmenttype;
$assignmentinstance = new $assignmentclass($cm->id, $assignment, $cm);
if ($assignmentinstance->description_is_hidden()){//force not to show description before availability
$event->description = get_string('notavailableyet', 'assignment');
}
}
}
}
if ($processed >= $display->maxevents) {
break;
}
$event->time = calendar_format_event_time($event, $now, $hrefparams);
$output[] = $event;
++$processed;
}
}
return $output;
}
/**
* 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) . '';
$context = get_context_instance(CONTEXT_COURSE, $module->course);
$fullname = format_string($coursecache[$module->course]->fullname, true, array('context' => $context));
$event->icon = '<img height="16" width="16" src="'.$icon.'" alt="'.$eventtype.'" title="'.$modulename.'" style="vertical-align: middle;" />';
$event->referer = '<a href="'.$CFG->wwwroot.'/mod/'.$event->modulename.'/view.php?id='.$module->id.'">'.$event->name.'</a>';
$event->courselink = '<a href="'.$CFG->wwwroot.'/course/view.php?id='.$module->course.'">'.$fullname.'</a>';
$event->cmid = $module->id;
} else if($event->courseid == SITEID) { // Site event
$event->icon = '<img height="16" width="16" src="'.$OUTPUT->pix_url('c/site') . '" alt="'.get_string('globalevent', 'calendar').'" style="vertical-align: middle;" />';
$event->cssclass = 'calendar_event_global';
} else if($event->courseid != 0 && $event->courseid != SITEID && $event->groupid == 0) { // Course event
calendar_get_course_cached($coursecache, $event->courseid);
$context = get_context_instance(CONTEXT_COURSE, $event->courseid);
$fullname = format_string($coursecache[$event->courseid]->fullname, true, array('context' => $context));
$event->icon = '<img height="16" width="16" src="'.$OUTPUT->pix_url('c/course') . '" alt="'.get_string('courseevent', 'calendar').'" style="vertical-align: middle;" />';
$event->courselink = '<a href="'.$CFG->wwwroot.'/course/view.php?id='.$event->courseid.'">'.$fullname.'</a>';
$event->cssclass = 'calendar_event_course';
} else if ($event->groupid) { // Group event
$event->icon = '<img height="16" width="16" src="'.$OUTPUT->pix_url('c/group') . '" alt="'.get_string('groupevent', 'calendar').'" style="vertical-align: middle;" />';
$event->cssclass = 'calendar_event_group';
} else if($event->userid) { // User event
$event->icon = '<img height="16" width="16" src="'.$OUTPUT->pix_url('c/user') . '" alt="'.get_string('userevent', 'calendar').'" style="vertical-align: middle;" />';
$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;
$whereclause = '';
// Quick test
if(is_bool($users) && is_bool($groups) && is_bool($courses)) {
return array();
}
if(is_array($users) && !empty($users)) {
// Events from a number of users
if(!empty($whereclause)) $whereclause .= ' OR';
$whereclause .= ' (userid IN ('.implode(',', $users).') AND courseid = 0 AND groupid = 0)';
} else if(is_numeric($users)) {
// Events from one user
if(!empty($whereclause)) $whereclause .= ' OR';
$whereclause .= ' (userid = '.$users.' AND courseid = 0 AND groupid = 0)';
} 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)) {
// Events from a number of groups
if(!empty($whereclause)) $whereclause .= ' OR';
$whereclause .= ' groupid IN ('.implode(',', $groups).')';
} else if(is_numeric($groups)) {
// Events from one group
if(!empty($whereclause)) $whereclause .= ' OR ';
$whereclause .= ' groupid = '.$groups;
} 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($courses)) {
if(!empty($whereclause)) {
$whereclause .= ' OR';
}
$whereclause .= ' (groupid = 0 AND courseid IN ('.implode(',', $courses).'))';
} else if(is_numeric($courses)) {
// One course
if(!empty($whereclause)) $whereclause .= ' OR';
$whereclause .= ' (groupid = 0 AND courseid = '.$courses.')';
} 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', $whereclause, null, 'timestart');
if ($events === false) {
$events = array();
}
return $events;
}
/**
* 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 $CFG;
$content = '';
if(!isset($data['d'])) {
$data['d'] = 1;
}
// Ensure course id passed if relevant
// Required due to changes in view/lib.php mainly (calendar_session_vars())
$courseid = '';
if (!empty($data['id'])) {
$courseid = '&amp;course='.$data['id'];
}
if(!checkdate($data['m'], $data['d'], $data['y'])) {
$time = time();
}
else {
$time = make_timestamp($data['y'], $data['m'], $data['d']);
}
$date = usergetdate($time);
$data['m'] = $date['mon'];
$data['y'] = $date['year'];
//Accessibility: calendar block controls, replaced <table> with <div>.
//$nexttext = link_arrow_right(get_string('monthnext', 'access'), $url='', $accesshide=true);
//$prevtext = link_arrow_left(get_string('monthprev', 'access'), $url='', $accesshide=true);
switch($type) {
case 'frontpage':
list($prevmonth, $prevyear) = calendar_sub_month($data['m'], $data['y']);
list($nextmonth, $nextyear) = calendar_add_month($data['m'], $data['y']);
$nextlink = calendar_get_link_next(get_string('monthnext', 'access'), 'index.php?', 0, $nextmonth, $nextyear, $accesshide=true);
$prevlink = calendar_get_link_previous(get_string('monthprev', 'access'), 'index.php?', 0, $prevmonth, $prevyear, true);
$calendarlink = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', array('view'=>'month')), 1, $data['m'], $data['y']);
if (!empty($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";
$content .= html_writer::end_tag('div');
break;
case 'course':
list($prevmonth, $prevyear) = calendar_sub_month($data['m'], $data['y']);
list($nextmonth, $nextyear) = calendar_add_month($data['m'], $data['y']);
$nextlink = calendar_get_link_next(get_string('monthnext', 'access'), 'view.php?id='.$data['id'].'&amp;', 0, $nextmonth, $nextyear, $accesshide=true);
$prevlink = calendar_get_link_previous(get_string('monthprev', 'access'), 'view.php?id='.$data['id'].'&amp;', 0, $prevmonth, $prevyear, true);
$calendarlink = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', array('view'=>'month')), 1, $data['m'], $data['y']);
if (!empty($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')), 1, $data['m'], $data['y']);
if (!empty($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')), 1, $data['m'], $data['y']);
if (!empty($data['id'])) {
$calendarlink->param('course', $data['id']);
}
$calendarlink = html_writer::link($calendarlink, userdate($time, get_string('strftimemonthyear')));
$content .= html_writer::tag('h3', $calendarlink);
break;
case 'month':
list($prevmonth, $prevyear) = calendar_sub_month($data['m'], $data['y']);
list($nextmonth, $nextyear) = calendar_add_month($data['m'], $data['y']);
$prevdate = make_timestamp($prevyear, $prevmonth, 1);
$nextdate = make_timestamp($nextyear, $nextmonth, 1);
$prevlink = calendar_get_link_previous(userdate($prevdate, get_string('strftimemonthyear')), 'view.php?view=month'.$courseid.'&amp;', 1, $prevmonth, $prevyear);
$nextlink = calendar_get_link_next(userdate($nextdate, get_string('strftimemonthyear')), 'view.php?view=month'.$courseid.'&amp;', 1, $nextmonth, $nextyear);
if (right_to_left()) {
$left = $nextlink;
$right = $prevlink;
} else {
$left = $prevlink;
$right = $nextlink;
}
$content .= html_writer::start_tag('div', array('class'=>'calendar-controls'));
$content .= $left . '<span class="hide"> | </span><h1 class="current">'.userdate($time, get_string('strftimemonthyear'))."</h1>";
$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();
$data['d'] = $date['mday']; // Just for convenience
$prevdate = usergetdate(make_timestamp($data['y'], $data['m'], $data['d'] - 1));
$nextdate = usergetdate(make_timestamp($data['y'], $data['m'], $data['d'] + 1));
$prevname = calendar_wday_name($days[$prevdate['wday']]);
$nextname = calendar_wday_name($days[$nextdate['wday']]);
$prevlink = calendar_get_link_previous($prevname, 'view.php?view=day'.$courseid.'&amp;', $prevdate['mday'], $prevdate['mon'], $prevdate['year']);
$nextlink = calendar_get_link_next($nextname, 'view.php?view=day'.$courseid.'&amp;', $nextdate['mday'], $nextdate['mon'], $nextdate['year']);
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;
}
/**
* Get the controls filter for calendar.
*
* Filter is used to hide calendar info from the display page
*
* @param moodle_url $returnurl return-url for filter controls
* @return string $content return filter controls in html
*/
function calendar_filter_controls(moodle_url $returnurl) {
global $CFG, $USER, $OUTPUT;
$groupevents = true;
$id = optional_param( 'id',0,PARAM_INT );
$seturl = new moodle_url('/calendar/set.php', array('return' => base64_encode($returnurl->out(false)), 'sesskey'=>sesskey()));
$content = '<table>';
$content .= '<tr>';
$seturl->param('var', 'showglobal');
if (calendar_show_event_type(CALENDAR_EVENT_GLOBAL)) {
$content .= '<td class="eventskey calendar_event_global" style="width: 11px;"><img src="'.$OUTPUT->pix_url('t/hide') . '" class="iconsmall" alt="'.get_string('hide').'" title="'.get_string('tt_hideglobal', 'calendar').'" style="cursor:pointer" onclick="location.href='."'".$seturl."'".'" /></td>';
$content .= '<td><a href="'.$seturl.'" title="'.get_string('tt_hideglobal', 'calendar').'">'.get_string('global', 'calendar').'</a></td>'."\n";
} else {
$content .= '<td style="width: 11px;"><img src="'.$OUTPUT->pix_url('t/show') . '" class="iconsmall" alt="'.get_string('show').'" title="'.get_string('tt_showglobal', 'calendar').'" style="cursor:pointer" onclick="location.href='."'".$seturl."'".'" /></td>';
$content .= '<td><a href="'.$seturl.'" title="'.get_string('tt_showglobal', 'calendar').'">'.get_string('global', 'calendar').'</a></td>'."\n";
}
$seturl->param('var', 'showcourses');
if (calendar_show_event_type(CALENDAR_EVENT_COURSE)) {
$content .= '<td class="eventskey calendar_event_course" style="width: 11px;"><img src="'.$OUTPUT->pix_url('t/hide') . '" class="iconsmall" alt="'.get_string('hide').'" title="'.get_string('tt_hidecourse', 'calendar').'" style="cursor:pointer" onclick="location.href='."'".$seturl."'".'" /></td>';
$content .= '<td><a href="'.$seturl.'" title="'.get_string('tt_hidecourse', 'calendar').'">'.get_string('course', 'calendar').'</a></td>'."\n";
} else {
$content .= '<td style="width: 11px;"><img src="'.$OUTPUT->pix_url('t/show') . '" class="iconsmall" alt="'.get_string('hide').'" title="'.get_string('tt_showcourse', 'calendar').'" style="cursor:pointer" onclick="location.href='."'".$seturl."'".'" /></td>';
$content .= '<td><a href="'.$seturl.'" title="'.get_string('tt_showcourse', 'calendar').'">'.get_string('course', 'calendar').'</a></td>'."\n";
}
if (isloggedin() && !isguestuser()) {
$content .= "</tr>\n<tr>";
if ($groupevents) {
// This course MIGHT have group events defined, so show the filter
$seturl->param('var', 'showgroups');
if (calendar_show_event_type(CALENDAR_EVENT_GROUP)) {
$content .= '<td class="eventskey calendar_event_group" style="width: 11px;"><img src="'.$OUTPUT->pix_url('t/hide') . '" class="iconsmall" alt="'.get_string('hide').'" title="'.get_string('tt_hidegroups', 'calendar').'" style="cursor:pointer" onclick="location.href='."'".$seturl."'".'" /></td>';
$content .= '<td><a href="'.$seturl.'" title="'.get_string('tt_hidegroups', 'calendar').'">'.get_string('group', 'calendar').'</a></td>'."\n";
} else {
$content .= '<td style="width: 11px;"><img src="'.$OUTPUT->pix_url('t/show') . '" class="iconsmall" alt="'.get_string('show').'" title="'.get_string('tt_showgroups', 'calendar').'" style="cursor:pointer" onclick="location.href='."'".$seturl."'".'" /></td>';
$content .= '<td><a href="'.$seturl.'" title="'.get_string('tt_showgroups', 'calendar').'">'.get_string('group', 'calendar').'</a></td>'."\n";
}
} else {
// This course CANNOT have group events, so lose the filter
$content .= '<td style="width: 11px;"></td><td>&nbsp;</td>'."\n";
}
$seturl->param('var', 'showuser');
if (calendar_show_event_type(CALENDAR_EVENT_USER)) {
$content .= '<td class="eventskey calendar_event_user" style="width: 11px;"><img src="'.$OUTPUT->pix_url('t/hide') . '" class="iconsmall" alt="'.get_string('hide').'" title="'.get_string('tt_hideuser', 'calendar').'" style="cursor:pointer" onclick="location.href='."'".$seturl."'".'" /></td>';
$content .= '<td><a href="'.$seturl.'" title="'.get_string('tt_hideuser', 'calendar').'">'.get_string('user', 'calendar').'</a></td>'."\n";
} else {
$content .= '<td style="width: 11px;"><img src="'.$OUTPUT->pix_url('t/show') . '" class="iconsmall" alt="'.get_string('show').'" title="'.get_string('tt_showuser', 'calendar').'" style="cursor:pointer" onclick="location.href='."'".$seturl."'".'" /></td>';
$content .= '<td><a href="'.$seturl.'" title="'.get_string('tt_showuser', 'calendar').'">'.get_string('user', 'calendar').'</a></td>'."\n";
}
}
$content .= "</tr>\n</table>\n";
return $content;
}
/**
* Return the representation day
*
* @param int $tstamp Timestamp in GMT
* @param int $now current Unix timestamp
* @param bool $usecommonwords
* @return string the formatted date/time
*/
function calendar_day_representation($tstamp, $now = false, $usecommonwords = true) {
static $shortformat;
if(empty($shortformat)) {
$shortformat = get_string('strftimedayshort');
}
if($now === false) {
$now = time();
}
// To have it in one place, if a change is needed
$formal = userdate($tstamp, $shortformat);
$datestamp = usergetdate($tstamp);
$datenow = usergetdate($now);
if($usecommonwords == false) {
// We don't want words, just a date
return $formal;
}
else if($datestamp['year'] == $datenow['year'] && $datestamp['yday'] == $datenow['yday']) {
// Today
return get_string('today', 'calendar');
}
else if(
($datestamp['year'] == $datenow['year'] && $datestamp['yday'] == $datenow['yday'] - 1 ) ||
($datestamp['year'] == $datenow['year'] - 1 && $datestamp['mday'] == 31 && $datestamp['mon'] == 12 && $datenow['yday'] == 1)
) {
// Yesterday
return get_string('yesterday', 'calendar');
}
else if(
($datestamp['year'] == $datenow['year'] && $datestamp['yday'] == $datenow['yday'] + 1 ) ||
($datestamp['year'] == $datenow['year'] + 1 && $datenow['mday'] == 31 && $datenow['mon'] == 12 && $datestamp['yday'] == 1)
) {
// Tomorrow
return get_string('tomorrow', 'calendar');
}
else {
return $formal;
}
}
/**
* return the formatted representation time
*
* @param int $time the timestamp in UTC, as obtained from the database
* @return string the formatted date/time
*/
function calendar_time_representation($time) {
static $langtimeformat = NULL;
if($langtimeformat === NULL) {
$langtimeformat = get_string('strftimetime');
}
$timeformat = get_user_preferences('calendar_timeformat');
if(empty($timeformat)){
$timeformat = get_config(NULL,'calendar_site_timeformat');
}
// The ? is needed because the preference might be present, but empty
return userdate($time, empty($timeformat) ? $langtimeformat : $timeformat);
}
/**
* Adds day, month, year arguments to a URL and returns a moodle_url object.
*
* @param string|moodle_url $linkbase
* @param int $d The number of the day.
* @param int $m The number of the month.
* @param int $y The number of the year.
* @return moodle_url|null $linkbase
*/
function calendar_get_link_href($linkbase, $d, $m, $y) {
if (empty($linkbase)) {
return '';
}
if (!($linkbase instanceof moodle_url)) {
$linkbase = new moodle_url();
}
if (!empty($d)) {
$linkbase->param('cal_d', $d);
}
if (!empty($m)) {
$linkbase->param('cal_m', $m);
}
if (!empty($y)) {
$linkbase->param('cal_y', $y);
}
return $linkbase;
}
/**
* Build and return a previous month HTML link, with an arrow.
*
* @param string $text The text label.
* @param string|moodle_url $linkbase The URL stub.
* @param int $d The number of the date.
* @param int $m The number of the month.
* @param int $y year The number of the year.
* @param bool $accesshide Default visible, or hide from all except screenreaders.
* @return string HTML string.
*/
function calendar_get_link_previous($text, $linkbase, $d, $m, $y, $accesshide=false) {
$href = calendar_get_link_href(new moodle_url($linkbase), $d, $m, $y);
if (empty($href)) {
return $text;
}
return link_arrow_left($text, (string)$href, $accesshide, 'previous');
}
/**
* Build and return a next month HTML link, with an arrow.
*
* @param string $text The text label.
* @param string|moodle_url $linkbase The URL stub.
* @param int $d the number of the Day
* @param int $m The number of the month.
* @param int $y The number of the year.
* @param bool $accesshide Default visible, or hide from all except screenreaders.
* @return string HTML string.
*/
function calendar_get_link_next($text, $linkbase, $d, $m, $y, $accesshide=false) {
$href = calendar_get_link_href(new moodle_url($linkbase), $d, $m, $y);
if (empty($href)) {
return $text;
}
return link_arrow_right($text, (string)$href, $accesshide, 'next');
}
/**
* Return the name of the weekday
*
* @param string $englishname
* @return string of the weekeday
*/
function calendar_wday_name($englishname) {
return get_string(strtolower($englishname), 'calendar');
}
/**
* Return the number of days in month
*
* @param int $month the number of the month.
* @param int $year the number of the year
* @return int
*/
function calendar_days_in_month($month, $year) {
return intval(date('t', mktime(0, 0, 0, $month, 1, $year)));
}
/**
* Get the upcoming event block
*
* @param array $events list of events
* @param moodle_url|string $linkhref link to event referer
* @return string|null $content html block content
*/
function calendar_get_block_upcoming($events, $linkhref = NULL) {
$content = '';
$lines = count($events);
if (!$lines) {
return $content;
}
for ($i = 0; $i < $lines; ++$i) {
if (!isset($events[$i]->time)) { // Just for robustness
continue;
}
$events[$i] = calendar_add_event_metadata($events[$i]);
$content .= '<div class="event"><span class="icon c0">'.$events[$i]->icon.'</span> ';
if (!empty($events[$i]->referer)) {
// That's an activity event, so let's provide the hyperlink
$content .= $events[$i]->referer;
} else {
if(!empty($linkhref)) {
$ed = usergetdate($events[$i]->timestart);
$href = calendar_get_link_href(new moodle_url(CALENDAR_URL.$linkhref), $ed['mday'], $ed['mon'], $ed['year']);
$href->set_anchor('event_'.$events[$i]->id);
$content .= html_writer::link($href, $events[$i]->name);
}
else {
$content .= $events[$i]->name;
}
}
$events[$i]->time = str_replace('&raquo;', '<br />&raquo;', $events[$i]->time);
$content .= '<div class="date">'.$events[$i]->time.'</div></div>';
if ($i < $lines - 1) $content .= '<hr />';
}
return $content;
}
/**
* Get the next following month
*
* If the current month is December, it will get the first month of the following year.
*
*
* @param int $month the number of the month.
* @param int $year the number of the year.
* @return array the following month
*/
function calendar_add_month($month, $year) {
if($month == 12) {
return array(1, $year + 1);
}
else {
return array($month + 1, $year);
}
}
/**
* Get the previous month
*
* If the current month is January, it will get the last month of the previous year.
*
* @param int $month the number of the month.
* @param int $year the number of the year.
* @return array previous month
*/
function calendar_sub_month($month, $year) {
if($month == 1) {
return array(12, $year - 1);
}
else {
return array($month - 1, $year);
}
}
/**
* Get per-day basis events
*
* @param array $events list of events
* @param int $month the number of the month
* @param int $year the number of the year
* @param array $eventsbyday event on specific day
* @param array $durationbyday duration of the event in days
* @param array $typesbyday event type (eg: global, course, user, or group)
* @param array $courses list of courses
* @return void
*/
function calendar_events_by_day($events, $month, $year, &$eventsbyday, &$durationbyday, &$typesbyday, &$courses) {
$eventsbyday = array();
$typesbyday = array();
$durationbyday = array();
if($events === false) {
return;
}
foreach($events as $event) {
$startdate = usergetdate($event->timestart);
// Set end date = start date if no duration
if ($event->timeduration) {
$enddate = usergetdate($event->timestart + $event->timeduration - 1);
} else {
$enddate = $startdate;
}
// Simple arithmetic: $year * 13 + $month is a distinct integer for each distinct ($year, $month) pair
if(!($startdate['year'] * 13 + $startdate['mon'] <= $year * 13 + $month) && ($enddate['year'] * 13 + $enddate['mon'] >= $year * 13 + $month)) {
// Out of bounds
continue;
}
$eventdaystart = intval($startdate['mday']);
if($startdate['mon'] == $month && $startdate['year'] == $year) {
// Give the event to its day
$eventsbyday[$eventdaystart][] = $event->id;
// Mark the day as having such an event
if($event->courseid == SITEID && $event->groupid == 0) {
$typesbyday[$eventdaystart]['startglobal'] = true;
// Set event class for global event
$events[$event->id]->class = 'calendar_event_global';
}
else if($event->courseid != 0 && $event->courseid != SITEID && $event->groupid == 0) {
$typesbyday[$eventdaystart]['startcourse'] = true;
// Set event class for course event
$events[$event->id]->class = 'calendar_event_course';
}
else if($event->groupid) {
$typesbyday[$eventdaystart]['startgroup'] = true;
// Set event class for group event
$events[$event->id]->class = 'calendar_event_group';
}
else if($event->userid) {
$typesbyday[$eventdaystart]['startuser'] = true;
// Set event class for user event
$events[$event->id]->class = 'calendar_event_user';
}
}
if($event->timeduration == 0) {
// Proceed with the next
continue;
}
// The event starts on $month $year or before. So...
$lowerbound = $startdate['mon'] == $month && $startdate['year'] == $year ? intval($startdate['mday']) : 0;
// Also, it ends on $month $year or later...
$upperbound = $enddate['mon'] == $month && $enddate['year'] == $year ? intval($enddate['mday']) : calendar_days_in_month($month, $year);
// Mark all days between $lowerbound and $upperbound (inclusive) as duration
for($i = $lowerbound + 1; $i <= $upperbound; ++$i) {
$durationbyday[$i][] = $event->id;
if($event->courseid == SITEID && $event->groupid == 0) {
$typesbyday[$i]['durationglobal'] = true;
}
else if($event->courseid != 0 && $event->courseid != SITEID && $event->groupid == 0) {
$typesbyday[$i]['durationcourse'] = true;
}
else if($event->groupid) {
$typesbyday[$i]['durationgroup'] = true;
}
else if($event->userid) {
$typesbyday[$i]['durationuser'] = true;
}
}
}
return;
}
/**
* Get current module cache
*
* @param array $coursecache list of course cache
* @param string $modulename name of the module
* @param int $instance module instance number
* @return stdClass|bool $module information
*/
function calendar_get_module_cached(&$coursecache, $modulename, $instance) {
$module = get_coursemodule_from_instance($modulename, $instance);
if($module === false) return false;
if(!calendar_get_course_cached($coursecache, $module->course)) {
return false;
}
return $module;
}
/**
* Get current course cache
*
* @param array $coursecache list of course cache
* @param int $courseid id of the course
* @return stdClass $coursecache[$courseid] return the specific course cache
*/
function calendar_get_course_cached(&$coursecache, $courseid) {
global $COURSE, $DB;
if (!isset($coursecache[$courseid])) {
if ($courseid == $COURSE->id) {
$coursecache[$courseid] = $COURSE;
} else {
$coursecache[$courseid] = $DB->get_record('course', array('id'=>$courseid));
}
}
return $coursecache[$courseid];
}
/**
* Returns the courses to load events for, the
*
* @param array $courseeventsfrom An array of courses to load calendar events for
* @param bool $ignorefilters specify the use of filters, false is set as default
* @return array An array of courses, groups, and user to load calendar events for based upon filters
*/
function calendar_set_filters(array $courseeventsfrom, $ignorefilters = false) {
global $USER, $CFG, $DB;
// For backwards compatability we have to check whether the courses array contains
// just id's in which case we need to load course objects.
$coursestoload = array();
foreach ($courseeventsfrom as $id => $something) {
if (!is_object($something)) {
$coursestoload[] = $id;
unset($courseeventsfrom[$id]);
}
}
if (!empty($coursestoload)) {
// TODO remove this in 2.2
debugging('calendar_set_filters now preferes an array of course objects with preloaded contexts', DEBUG_DEVELOPER);
$courseeventsfrom = array_merge($courseeventsfrom, $DB->get_records_list('course', 'id', $coursestoload));
}
$courses = array();
$user = false;
$group = false;
// capabilities that allow seeing group events from all groups
// TODO: rewrite so that moodle/calendar:manageentries is not necessary here
$allgroupscaps = array('moodle/site:accessallgroups', 'moodle/calendar:manageentries');
$isloggedin = isloggedin();
if ($ignorefilters || calendar_show_event_type(CALENDAR_EVENT_COURSE)) {
$courses = array_keys($courseeventsfrom);
}
if ($ignorefilters || calendar_show_event_type(CALENDAR_EVENT_GLOBAL)) {
$courses[] = SITEID;
}
$courses = array_unique($courses);
sort($courses);
if (!empty($courses) && in_array(SITEID, $courses)) {
// Sort courses for consistent colour highlighting
// Effectively ignoring SITEID as setting as last course id
$key = array_search(SITEID, $courses);
unset($courses[$key]);
$courses[] = SITEID;
}
if ($ignorefilters || ($isloggedin && calendar_show_event_type(CALENDAR_EVENT_USER))) {
$user = $USER->id;
}
if (!empty($courseeventsfrom) && (calendar_show_event_type(CALENDAR_EVENT_GROUP) || $ignorefilters)) {
if (count($courseeventsfrom)==1) {
$course = reset($courseeventsfrom);
if (has_any_capability($allgroupscaps, get_context_instance(CONTEXT_COURSE, $course->id))) {
$coursegroups = groups_get_all_groups($course->id, 0, 0, 'g.id');
$group = array_keys($coursegroups);
}
}
if ($group === false) {
if (!empty($CFG->calendar_adminseesall) && has_any_capability($allgroupscaps, get_system_context())) {
$group = true;
} else if ($isloggedin) {
$groupids = array();
// We already have the courses to examine in $courses
// For each course...
foreach ($courseeventsfrom as $courseid => $course) {
// If the user is an editing teacher in there,
if (!empty($USER->groupmember[$course->id])) {
// We've already cached the users groups for this course so we can just use that
$groupids = array_merge($groupids, $USER->groupmember[$course->id]);
} else if ($course->groupmode != NOGROUPS || !$course->groupmodeforce) {
// If this course has groups, show events from all of those related to the current user
$coursegroups = groups_get_user_groups($course->id, $USER->id);
$groupids = array_merge($groupids, $coursegroups['0']);
}
}
if (!empty($groupids)) {
$group = $groupids;
}
}
}
}
if (empty($courses)) {
$courses = false;
}
return array($courses, $group, $user);
}
/**
* Return the capability for editing calendar event
*
* @param calendar_event $event event object
* @return bool capability to edit event
*/
function calendar_edit_event_allowed($event) {
global $USER, $DB;
// Must be logged in
if (!isloggedin()) {
return false;
}
// can not be using guest account
if (isguestuser()) {
return false;
}
$sitecontext = get_context_instance(CONTEXT_SYSTEM);
// if user has manageentries at site level, return true
if (has_capability('moodle/calendar:manageentries', $sitecontext)) {
return true;
}
// if groupid is set, it's definitely a group event
if (!empty($event->groupid)) {
// Allow users to add/edit group events if:
// 1) They have manageentries (= entries for whole course)
// 2) They have managegroupentries AND are in the group
$group = $DB->get_record('groups', array('id'=>$event->groupid));
return $group && (
has_capability('moodle/calendar:manageentries', $event->context) ||
(has_capability('moodle/calendar:managegroupentries', $event->context)
&& groups_is_member($event->groupid)));
} else if (!empty($event->courseid)) {
// if groupid is not set, but course is set,
// it's definiely a course event
return has_capability('moodle/calendar:manageentries', $event->context);
} else if (!empty($event->userid) && $event->userid == $USER->id) {
// if course is not set, but userid id set, it's a user event
return (has_capability('moodle/calendar:manageownentries', $event->context));
} else if (!empty($event->userid)) {
return (has_capability('moodle/calendar:manageentries', $event->context));
}
return false;
}
/**
* Returns the default courses to display on the calendar when there isn't a specific
* course to display.
*
* @return array $courses Array of courses to display
*/
function calendar_get_default_courses() {
global $CFG, $DB;
if (!isloggedin()) {
return array();
}
$courses = array();
if (!empty($CFG->calendar_adminseesall) && has_capability('moodle/calendar:manageentries', context_system::instance())) {
list ($select, $join) = context_instance_preload_sql('c.id', CONTEXT_COURSE, 'ctx');
$sql = "SELECT c.* $select
FROM {course} c
$join
WHERE EXISTS (SELECT 1 FROM {event} e WHERE e.courseid = c.id)
";
$courses = $DB->get_records_sql($sql, null, 0, 20);
foreach ($courses as $course) {
context_helper::preload_from_record($course);
}
return $courses;
}
$courses = enrol_get_my_courses();
return $courses;
}
/**
* Display calendar preference button
*
* @param stdClass $course course object
* @return string return preference button in html
*/
function calendar_preferences_button(stdClass $course) {
global $OUTPUT;
// Guests have no preferences
if (!isloggedin() || isguestuser()) {
return '';
}
return $OUTPUT->single_button(new moodle_url('/calendar/preferences.php', array('course' => $course->id)), get_string("preferences", "calendar"));
}
/**
* Get event format time
*
* @param calendar_event $event event object
* @param int $now current time in gmt
* @param array $linkparams list of params for event link
* @param bool $usecommonwords the words as formatted date/time.
* @param int $showtime determine the show time GMT timestamp
* @return string $eventtime link/string for event time
*/
function calendar_format_event_time($event, $now, $linkparams = null, $usecommonwords = true, $showtime=0) {
$startdate = usergetdate($event->timestart);
$enddate = usergetdate($event->timestart + $event->timeduration);
$usermidnightstart = usergetmidnight($event->timestart);
if($event->timeduration) {
// To avoid doing the math if one IF is enough :)
$usermidnightend = usergetmidnight($event->timestart + $event->timeduration);
}
else {
$usermidnightend = $usermidnightstart;
}
if (empty($linkparams) || !is_array($linkparams)) {
$linkparams = array();
}
$linkparams['view'] = 'day';
// OK, now to get a meaningful display...
// First of all we have to construct a human-readable date/time representation
if($event->timeduration) {
// It has a duration
if($usermidnightstart == $usermidnightend ||
($event->timestart == $usermidnightstart) && ($event->timeduration == 86400 || $event->timeduration == 86399) ||
($event->timestart + $event->timeduration <= $usermidnightstart + 86400)) {
// But it's all on the same day
$timestart = calendar_time_representation($event->timestart);
$timeend = calendar_time_representation($event->timestart + $event->timeduration);
$time = $timestart.' <strong>&raquo;</strong> '.$timeend;
if ($event->timestart == $usermidnightstart && ($event->timeduration == 86400 || $event->timeduration == 86399)) {
$time = get_string('allday', 'calendar');
}
// Set printable representation
if (!$showtime) {
$day = calendar_day_representation($event->timestart, $now, $usecommonwords);
$url = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', $linkparams), $enddate['mday'], $enddate['mon'], $enddate['year']);
$eventtime = html_writer::link($url, $day).', '.$time;
} else {
$eventtime = $time;
}
} else {
// It spans two or more days
$daystart = calendar_day_representation($event->timestart, $now, $usecommonwords).', ';
if ($showtime == $usermidnightstart) {
$daystart = '';
}
$timestart = calendar_time_representation($event->timestart);
$dayend = calendar_day_representation($event->timestart + $event->timeduration, $now, $usecommonwords).', ';
if ($showtime == $usermidnightend) {
$dayend = '';
}
$timeend = calendar_time_representation($event->timestart + $event->timeduration);
// Set printable representation
if ($now >= $usermidnightstart && $now < ($usermidnightstart + 86400)) {
$url = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', $linkparams), $enddate['mday'], $enddate['mon'], $enddate['year']);
$eventtime = $timestart.' <strong>&raquo;</strong> '.html_writer::link($url, $dayend).$timeend;
} else {
$url = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', $linkparams), $enddate['mday'], $enddate['mon'], $enddate['year']);
$eventtime = html_writer::link($url, $daystart).$timestart.' <strong>&raquo;</strong> ';
$url = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', $linkparams), $startdate['mday'], $startdate['mon'], $startdate['year']);
$eventtime .= html_writer::link($url, $dayend).$timeend;
}
}
} else {
$time = calendar_time_representation($event->timestart);
// Set printable representation
if (!$showtime) {
$day = calendar_day_representation($event->timestart, $now, $usecommonwords);
$url = calendar_get_link_href(new moodle_url(CALENDAR_URL.'view.php', $linkparams), $startdate['mday'], $startdate['mon'], $startdate['year']);
$eventtime = html_writer::link($url, $day).', '.trim($time);
} else {
$eventtime = $time;
}
}
if($event->timestart + $event->timeduration < $now) {
// It has expired
$eventtime = '<span class="dimmed_text">'.str_replace(' href=', ' class="dimmed" href=', $eventtime).'</span>';
}
return $eventtime;
}
/**
* Display month selector options
*
* @param string $name for the select element
* @param string|array $selected options for select elements
*/
function calendar_print_month_selector($name, $selected) {
$months = array();
for ($i=1; $i<=12; $i++) {
$months[$i] = userdate(gmmktime(12, 0, 0, $i, 15, 2000), '%B');
}
echo html_writer::label(get_string('months'), 'menu'. $name, false, array('class' => 'accesshide'));
echo html_writer::select($months, $name, $selected, false);
}
/**
* Checks to see if the requested type of event should be shown for the given user.
*
* @param CALENDAR_EVENT_GLOBAL|CALENDAR_EVENT_COURSE|CALENDAR_EVENT_GROUP|CALENDAR_EVENT_USER $type
* The type to check the display for (default is to display all)
* @param stdClass|int|null $user The user to check for - by default the current user
* @return bool True if the tyep should be displayed false otherwise
*/
function calendar_show_event_type($type, $user = null) {
$default = CALENDAR_EVENT_GLOBAL + CALENDAR_EVENT_COURSE + CALENDAR_EVENT_GROUP + CALENDAR_EVENT_USER;
if (get_user_preferences('calendar_persistflt', 0, $user) === 0) {
global $SESSION;
if (!isset($SESSION->calendarshoweventtype)) {
$SESSION->calendarshoweventtype = $default;
}
return $SESSION->calendarshoweventtype & $type;
} else {
return get_user_preferences('calendar_savedflt', $default, $user) & $type;
}
}
/**
* Sets the display of the event type given $display.
*
* If $display = true the event type will be shown.
* If $display = false the event type will NOT be shown.
* If $display = null the current value will be toggled and saved.
*
* @param CALENDAR_EVENT_GLOBAL|CALENDAR_EVENT_COURSE|CALENDAR_EVENT_GROUP|CALENDAR_EVENT_USER $type object of CALENDAR_EVENT_XXX
* @param bool $display option to display event type
* @param stdClass|int $user moodle user object or id, null means current user
*/
function calendar_set_event_type_display($type, $display = null, $user = null) {
$persist = get_user_preferences('calendar_persistflt', 0, $user);
$default = CALENDAR_EVENT_GLOBAL + CALENDAR_EVENT_COURSE + CALENDAR_EVENT_GROUP + CALENDAR_EVENT_USER;
if ($persist === 0) {
global $SESSION;
if (!isset($SESSION->calendarshoweventtype)) {
$SESSION->calendarshoweventtype = $default;
}
$preference = $SESSION->calendarshoweventtype;
} else {
$preference = get_user_preferences('calendar_savedflt', $default, $user);
}
$current = $preference & $type;
if ($display === null) {
$display = !$current;
}
if ($display && !$current) {
$preference += $type;
} else if (!$display && $current) {
$preference -= $type;
}
if ($persist === 0) {
$SESSION->calendarshoweventtype = $preference;
} else {
if ($preference == $default) {
unset_user_preference('calendar_savedflt', $user);
} else {
set_user_preference('calendar_savedflt', $preference, $user);
}
}
}
/**
* Get calendar's allowed types
*
* @param stdClass $allowed list of allowed edit for event type
* @param stdClass|int $course object of a course or course id
*/
function calendar_get_allowed_types(&$allowed, $course = null) {
global $USER, $CFG, $DB;
$allowed = new stdClass();
$allowed->user = has_capability('moodle/calendar:manageownentries', get_system_context());
$allowed->groups = false; // This may change just below
$allowed->courses = false; // This may change just below
$allowed->site = has_capability('moodle/calendar:manageentries', get_context_instance(CONTEXT_COURSE, SITEID));
if (!empty($course)) {
if (!is_object($course)) {
$course = $DB->get_record('course', array('id' => $course), '*', MUST_EXIST);
}
if ($course->id != SITEID) {
$coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
$allowed->user = has_capability('moodle/calendar:manageownentries', $coursecontext);
if (has_capability('moodle/calendar:manageentries', $coursecontext)) {
$allowed->courses = array($course->id => 1);
if ($course->groupmode != NOGROUPS || !$course->groupmodeforce) {
$allowed->groups = groups_get_all_groups($course->id);
}
} else if (has_capability('moodle/calendar:managegroupentries', $coursecontext)) {
if($course->groupmode != NOGROUPS || !$course->groupmodeforce) {
$allowed->groups = groups_get_all_groups($course->id);
}
}
}
}
}
/**
* See if user can add calendar entries at all
* used to print the "New Event" button
*
* @param stdClass $course object of a course or course id
* @return bool has the capability to add at least one event type
*/
function calendar_user_can_add_event($course) {
if (!isloggedin() || isguestuser()) {
return false;
}
calendar_get_allowed_types($allowed, $course);
return (bool)($allowed->user || $allowed->groups || $allowed->courses || $allowed->site);
}
/**
* Check wether the current user is permitted to add events
*
* @param stdClass $event object of event
* @return bool has the capability to add event
*/
function calendar_add_event_allowed($event) {
global $USER, $DB;
// can not be using guest account
if (!isloggedin() or isguestuser()) {
return false;
}
$sitecontext = get_context_instance(CONTEXT_SYSTEM);
// if user has manageentries at site level, always return true
if (has_capability('moodle/calendar:manageentries', $sitecontext)) {
return true;
}
switch ($event->eventtype) {
case 'course':
return has_capability('moodle/calendar:manageentries', $event->context);
case 'group':
// Allow users to add/edit group events if:
// 1) They have manageentries (= entries for whole course)
// 2) They have managegroupentries AND are in the group
$group = $DB->get_record('groups', array('id'=>$event->groupid));
return $group && (
has_capability('moodle/calendar:manageentries', $event->context) ||
(has_capability('moodle/calendar:managegroupentries', $event->context)
&& groups_is_member($event->groupid)));
case 'user':
if ($event->userid == $USER->id) {
return (has_capability('moodle/calendar:manageownentries', $event->context));
}
//there is no 'break;' intentionally
case 'site':
return has_capability('moodle/calendar:manageentries', $event->context);
default:
return has_capability('moodle/calendar:manageentries', $event->context);
}
}
/**
* Manage calendar events
*
* This class provides the required functionality in order to manage calendar events.
* It was introduced as part of Moodle 2.0 and was created in order to provide a
* better framework for dealing with calendar events in particular regard to file
* handling through the new file API
*
* @package core_calendar
* @category calendar
* @copyright 2009 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*
* @property int $id The id within the event table
* @property string $name The name of the event
* @property string $description The description of the event
* @property int $format The format of the description FORMAT_?
* @property int $courseid The course the event is associated with (0 if none)
* @property int $groupid The group the event is associated with (0 if none)
* @property int $userid The user the event is associated with (0 if none)
* @property int $repeatid If this is a repeated event this will be set to the
* id of the original
* @property string $modulename If added by a module this will be the module name
* @property int $instance If added by a module this will be the module instance
* @property string $eventtype The event type
* @property int $timestart The start time as a timestamp
* @property int $timeduration The duration of the event in seconds
* @property int $visible 1 if the event is visible
* @property int $uuid ?
* @property int $sequence ?
* @property int $timemodified The time last modified as a timestamp
*/
class calendar_event {
/** @var array An object containing the event properties can be accessed via the magic __get/set methods */
protected $properties = null;
/**
* @var string The converted event discription with file paths resolved. This gets populated when someone requests description for the first time */
protected $_description = null;
/** @var array The options to use with this description editor */
protected $editoroptions = array(
'subdirs'=>false,
'forcehttps'=>false,
'maxfiles'=>-1,
'maxbytes'=>null,
'trusttext'=>false);
/** @var object The context to use with the description editor */
protected $editorcontext = null;
/**
* Instantiates a new event and optionally populates its properties with the
* data provided
*
* @param stdClass $data Optional. An object containing the properties to for
* an event
*/
public function __construct($data=null) {
global $CFG, $USER;
// First convert to object if it is not already (should either be object or assoc array)
if (!is_object($data)) {
$data = (object)$data;
}
$this->editoroptions['maxbytes'] = $CFG->maxbytes;
$data->eventrepeats = 0;
if (empty($data->id)) {
$data->id = null;
}
// Default to a user event
if (empty($data->eventtype)) {
$data->eventtype = 'user';
}
// Default to the current user
if (empty($data->userid)) {
$data->userid = $USER->id;
}
if (!empty($data->timeduration) && is_array($data->timeduration)) {
$data->timeduration = make_timestamp($data->timeduration['year'], $data->timeduration['month'], $data->timeduration['day'], $data->timeduration['hour'], $data->timeduration['minute']) - $data->timestart;
}
if (!empty($data->description) && is_array($data->description)) {
$data->format = $data->description['format'];
$data->description = $data->description['text'];
} else if (empty($data->description)) {
$data->description = '';
$data->format = editors_get_preferred_format();
}
// Ensure form is defaulted correctly
if (empty($data->format)) {
$data->format = editors_get_preferred_format();
}
if (empty($data->context)) {
$data->context = $this->calculate_context($data);
}
$this->properties = $data;
}
/**
* Magic property method
*
* Attempts to call a set_$key method if one exists otherwise falls back
* to simply set the property
*
* @param string $key property name
* @param mixed $value value of the property
*/
public function __set($key, $value) {
if (method_exists($this, 'set_'.$key)) {
$this->{'set_'.$key}($value);
}
$this->properties->{$key} = $value;
}
/**
* Magic get method
*
* Attempts to call a get_$key method to return the property and ralls over
* to return the raw property
*
* @param string $key property name
* @return mixed property value
*/
public function __get($key) {
if (method_exists($this, 'get_'.$key)) {
return $this->{'get_'.$key}();
}
if (!isset($this->properties->{$key})) {
throw new coding_exception('Undefined property requested');
}
return $this->properties->{$key};
}
/**
* Stupid PHP needs an isset magic method if you use the get magic method and
* still want empty calls to work.... blah ~!
*
* @param string $key $key property name
* @return bool|mixed property value, false if property is not exist
*/
public function __isset($key) {
return !empty($this->properties->{$key});
}
/**
* Calculate the context value needed for calendar_event.
* Event's type can be determine by the available value store in $data
* It is important to check for the existence of course/courseid to determine
* the course event.
* Default value is set to CONTEXT_USER
*
* @param stdClass $data information about event
* @return stdClass The context object.
*/
protected function calculate_context(stdClass $data) {
global $USER, $DB;
$context = null;
if (isset($data->courseid) && $data->courseid > 0) {
$context = get_context_instance(CONTEXT_COURSE, $data->courseid);
} else if (isset($data->course) && $data->course > 0) {
$context = get_context_instance(CONTEXT_COURSE, $data->course);
} else if (isset($data->groupid) && $data->groupid > 0) {
$group = $DB->get_record('groups', array('id'=>$data->groupid));
$context = get_context_instance(CONTEXT_COURSE, $group->courseid);
} else if (isset($data->userid) && $data->userid > 0 && $data->userid == $USER->id) {
$context = get_context_instance(CONTEXT_USER, $data->userid);
} else if (isset($data->userid) && $data->userid > 0 && $data->userid != $USER->id &&
isset($data->instance) && $data->instance > 0) {
$cm = get_coursemodule_from_instance($data->modulename, $data->instance, 0, false, MUST_EXIST);
$context = get_context_instance(CONTEXT_COURSE, $cm->course);
} else {
$context = get_context_instance(CONTEXT_USER);
}
return $context;
}
/**
* Returns an array of editoroptions for this event: Called by __get
* Please use $blah = $event->editoroptions;
*
* @return array event editor options
*/
protected function get_editoroptions() {
return $this->editoroptions;
}
/**
* Returns an event description: Called by __get
* Please use $blah = $event->description;
*
* @return string event description
*/
protected function get_description() {
global $CFG;
require_once($CFG->libdir . '/filelib.php');
if ($this->_description === null) {
// Check if we have already resolved the context for this event
if ($this->editorcontext === null) {
// Switch on the event type to decide upon the appropriate context
// to use for this event
$this->editorcontext = $this->properties->context;
if ($this->properties->eventtype != 'user' && $this->properties->eventtype != 'course'
&& $this->properties->eventtype != 'site' && $this->properties->eventtype != 'group') {
return clean_text($this->properties->description, $this->properties->format);
}
}
// Work out the item id for the editor, if this is a repeated event then the files will
// be associated with the original
if (!empty($this->properties->repeatid) && $this->properties->repeatid > 0) {
$itemid = $this->properties->repeatid;
} else {
$itemid = $this->properties->id;
}
// Convert file paths in the description so that things display correctly
$this->_description = file_rewrite_pluginfile_urls($this->properties->description, 'pluginfile.php', $this->editorcontext->id, 'calendar', 'event_description', $itemid);
// Clean the text so no nasties get through
$this->_description = clean_text($this->_description, $this->properties->format);
}
// Finally return the description
return $this->_description;
}
/**
* Return the number of repeat events there are in this events series
*
* @return int number of event repeated
*/
public function count_repeats() {
global $DB;
if (!empty($this->properties->repeatid)) {
$this->properties->eventrepeats = $DB->count_records('event', array('repeatid'=>$this->properties->repeatid));
// We don't want to count ourselves
$this->properties->eventrepeats--;
}
return $this->properties->eventrepeats;
}
/**
* Update or create an event within the database
*
* Pass in a object containing the event properties and this function will
* insert it into the database and deal with any associated files
*
* @see add_event()
* @see update_event()
*
* @param stdClass $data object of event
* @param bool $checkcapability if moodle should check calendar managing capability or not
* @return bool event updated
*/
public function update($data, $checkcapability=true) {
global $CFG, $DB, $USER;
foreach ($data as $key=>$value) {
$this->properties->$key = $value;
}
$this->properties->timemodified = time();
$usingeditor = (!empty($this->properties->description) && is_array($this->properties->description));
if (empty($this->properties->id) || $this->properties->id < 1) {
if ($checkcapability) {
if (!calendar_add_event_allowed($this->properties)) {
print_error('nopermissiontoupdatecalendar');
}
}
if ($usingeditor) {
switch ($this->properties->eventtype) {
case 'user':
$this->properties->courseid = 0;
$this->properties->course = 0;
$this->properties->groupid = 0;
$this->properties->userid = $USER->id;
break;
case 'site':
$this->properties->courseid = SITEID;
$this->properties->course = SITEID;
$this->properties->groupid = 0;
$this->properties->userid = $USER->id;
break;
case 'course':
$this->properties->groupid = 0;
$this->properties->userid = $USER->id;
break;
case 'group':
$this->properties->userid = $USER->id;
break;
default:
// Ewww we should NEVER get here, but just incase we do lets
// fail gracefully
$usingeditor = false;
break;
}
// If we are actually using the editor, we recalculate the context because some default values
// were set when calculate_context() was called from the constructor.
if ($usingeditor) {
$this->properties->context = $this->calculate_context($this->properties);
$this->editorcontext = $this->properties->context;
}
$editor = $this->properties->description;
$this->properties->format = $this->properties->description['format'];
$this->properties->description = $this->properties->description['text'];
}
// Insert the event into the database
$this->properties->id = $DB->insert_record('event', $this->properties);
if ($usingeditor) {
$this->properties->description = file_save_draft_area_files(
$editor['itemid'],
$this->editorcontext->id,
'calendar',
'event_description',
$this->properties->id,
$this->editoroptions,
$editor['text'],
$this->editoroptions['forcehttps']);
$DB->set_field('event', 'description', $this->properties->description, array('id'=>$this->properties->id));
}
// Log the event entry.
add_to_log($this->properties->courseid, 'calendar', 'add', 'event.php?action=edit&amp;id='.$this->properties->id, $this->properties->name);
$repeatedids = array();
if (!empty($this->properties->repeat)) {
$this->properties->repeatid = $this->properties->id;
$DB->set_field('event', 'repeatid', $this->properties->repeatid, array('id'=>$this->properties->id));
$eventcopy = clone($this->properties);
unset($eventcopy->id);
for($i = 1; $i < $eventcopy->repeats; $i++) {
$eventcopy->timestart = ($eventcopy->timestart+WEEKSECS) + dst_offset_on($eventcopy->timestart) - dst_offset_on($eventcopy->timestart+WEEKSECS);
// Get the event id for the log record.
$eventcopyid = $DB->insert_record('event', $eventcopy);
// If the context has been set delete all associated files
if ($usingeditor) {
$fs = get_file_storage();
$files = $fs->get_area_files($this->editorcontext->id, 'calendar', 'event_description', $this->properties->id);
foreach ($files as $file) {
$fs->create_file_from_storedfile(array('itemid'=>$eventcopyid), $file);
}
}
$repeatedids[] = $eventcopyid;
// Log the event entry.
add_to_log($eventcopy->courseid, 'calendar', 'add', 'event.php?action=edit&amp;id='.$eventcopyid, $eventcopy->name);
}
}
// Hook for tracking added events
self::calendar_event_hook('add_event', array($this->properties, $repeatedids));
return true;
} else {
if ($checkcapability) {
if(!calendar_edit_event_allowed($this->properties)) {
print_error('nopermissiontoupdatecalendar');
}
}
if ($usingeditor) {
if ($this->editorcontext !== null) {
$this->properties->description = file_save_draft_area_files(
$this->properties->description['itemid'],
$this->editorcontext->id,
'calendar',
'event_description',
$this->properties->id,
$this->editoroptions,
$this->properties->description['text'],
$this->editoroptions['forcehttps']);
} else {
$this->properties->format = $this->properties->description['format'];
$this->properties->description = $this->properties->description['text'];
}
}
$event = $DB->get_record('event', array('id'=>$this->properties->id));
$updaterepeated = (!empty($this->properties->repeatid) && !empty($this->properties->repeateditall));
if ($updaterepeated) {
// Update all
if ($this->properties->timestart != $event->timestart) {
$timestartoffset = $this->properties->timestart - $event->timestart;
$sql = "UPDATE {event}
SET name = ?,
description = ?,
timestart = timestart + ?,
timeduration = ?,
timemodified = ?
WHERE repeatid = ?";
$params = array($this->properties->name, $this->properties->description, $timestartoffset, $this->properties->timeduration, time(), $event->repeatid);
} else {
$sql = "UPDATE {event} SET name = ?, description = ?, timeduration = ?, timemodified = ? WHERE repeatid = ?";
$params = array($this->properties->name, $this->properties->description, $this->properties->timeduration, time(), $event->repeatid);
}
$DB->execute($sql, $params);
// Log the event update.
add_to_log($this->properties->courseid, 'calendar', 'edit all', 'event.php?action=edit&amp;id='.$this->properties->id, $this->properties->name);
} else {
$DB->update_record('event', $this->properties);
$event = calendar_event::load($this->properties->id);
$this->properties = $event->properties();
add_to_log($this->properties->courseid, 'calendar', 'edit', 'event.php?action=edit&amp;id='.$this->properties->id, $this->properties->name);
}
// Hook for tracking event updates
self::calendar_event_hook('update_event', array($this->properties, $updaterepeated));
return true;
}
}
/**
* Deletes an event and if selected an repeated events in the same series
*
* This function deletes an event, any associated events if $deleterepeated=true,
* and cleans up any files associated with the events.
*
* @see delete_event()
*
* @param bool $deleterepeated delete event repeatedly
* @return bool succession of deleting event
*/
public function delete($deleterepeated=false) {
global $DB;
// If $this->properties->id is not set then something is wrong
if (empty($this->properties->id)) {
debugging('Attempting to delete an event before it has been loaded', DEBUG_DEVELOPER);
return false;
}
// Delete the event
$DB->delete_records('event', array('id'=>$this->properties->id));
// If we are deleting parent of a repeated event series, promote the next event in the series as parent
if (($this->properties->id == $this->properties->repeatid) && !$deleterepeated) {
$newparent = $DB->get_field_sql("SELECT id from {event} where repeatid = ? order by id ASC", array($this->properties->id), IGNORE_MULTIPLE);
if (!empty($newparent)) {
$DB->execute("UPDATE {event} SET repeatid = ? WHERE repeatid = ?", array($newparent, $this->properties->id));
// Get all records where the repeatid is the same as the event being removed
$events = $DB->get_records('event', array('repeatid' => $newparent));
// For each of the returned events trigger the event_update hook.
foreach ($events as $event) {
self::calendar_event_hook('update_event', array($event, false));
}
}
}
// If the editor context hasn't already been set then set it now
if ($this->editorcontext === null) {
$this->editorcontext = $this->properties->context;
}
// If the context has been set delete all associated files
if ($this->editorcontext !== null) {
$fs = get_file_storage();
$files = $fs->get_area_files($this->editorcontext->id, 'calendar', 'event_description', $this->properties->id);
foreach ($files as $file) {
$file->delete();
}
}
// Fire the event deleted hook
self::calendar_event_hook('delete_event', array($this->properties->id, $deleterepeated));
// If we need to delete repeated events then we will fetch them all and delete one by one
if ($deleterepeated && !empty($this->properties->repeatid) && $this->properties->repeatid > 0) {
// Get all records where the repeatid is the same as the event being removed
$events = $DB->get_records('event', array('repeatid'=>$this->properties->repeatid));
// For each of the returned events populate a calendar_event object and call delete
// make sure the arg passed is false as we are already deleting all repeats
foreach ($events as $event) {
$event = new calendar_event($event);
$event->delete(false);
}
}
return true;
}
/**
* Fetch all event properties
*
* This function returns all of the events properties as an object and optionally
* can prepare an editor for the description field at the same time. This is
* designed to work when the properties are going to be used to set the default
* values of a moodle forms form.
*
* @param bool $prepareeditor If set to true a editor is prepared for use with
* the mforms editor element. (for description)
* @return stdClass Object containing event properties
*/
public function properties($prepareeditor=false) {
global $USER, $CFG, $DB;
// First take a copy of the properties. We don't want to actually change the
// properties or we'd forever be converting back and forwards between an
// editor formatted description and not
$properties = clone($this->properties);
// Clean the description here
$properties->description = clean_text($properties->description, $properties->format);
// If set to true we need to prepare the properties for use with an editor
// and prepare the file area
if ($prepareeditor) {
// We may or may not have a property id. If we do then we need to work
// out the context so we can copy the existing files to the draft area
if (!empty($properties->id)) {
if ($properties->eventtype === 'site') {
// Site context
$this->editorcontext = $this->properties->context;
} else if ($properties->eventtype === 'user') {
// User context
$this->editorcontext = $this->properties->context;
} else if ($properties->eventtype === 'group' || $properties->eventtype === 'course') {
// First check the course is valid
$course = $DB->get_record('course', array('id'=>$properties->courseid));
if (!$course) {
print_error('invalidcourse');
}
// Course context
$this->editorcontext = $this->properties->context;
// We have a course and are within the course context so we had
// better use the courses max bytes value
$this->editoroptions['maxbytes'] = $course->maxbytes;
} else {
// If we get here we have a custom event type as used by some
// modules. In this case the event will have been added by
// code and we won't need the editor
$this->editoroptions['maxbytes'] = 0;
$this->editoroptions['maxfiles'] = 0;
}
if (empty($this->editorcontext) || empty($this->editorcontext->id)) {
$contextid = false;
} else {
// Get the context id that is what we really want
$contextid = $this->editorcontext->id;
}
} else {
// If we get here then this is a new event in which case we don't need a
// context as there is no existing files to copy to the draft area.
$contextid = null;
}
// If the contextid === false we don't support files so no preparing
// a draft area
if ($contextid !== false) {
// Just encase it has already been submitted
$draftiddescription = file_get_submitted_draft_itemid('description');
// Prepare the draft area, this copies existing files to the draft area as well
$properties->description = file_prepare_draft_area($draftiddescription, $contextid, 'calendar', 'event_description', $properties->id, $this->editoroptions, $properties->description);
} else {
$draftiddescription = 0;
}
// Structure the description field as the editor requires
$properties->description = array('text'=>$properties->description, 'format'=>$properties->format, 'itemid'=>$draftiddescription);
}
// Finally return the properties
return $properties;
}
/**
* Toggles the visibility of an event
*
* @param null|bool $force If it is left null the events visibility is flipped,
* If it is false the event is made hidden, if it is true it
* is made visible.
* @return bool if event is successfully updated, toggle will be visible
*/
public function toggle_visibility($force=null) {
global $CFG, $DB;
// Set visible to the default if it is not already set
if (empty($this->properties->visible)) {
$this->properties->visible = 1;
}
if ($force === true || ($force !== false && $this->properties->visible == 0)) {
// Make this event visible
$this->properties->visible = 1;
// Fire the hook
self::calendar_event_hook('show_event', array($this->properties));
} else {
// Make this event hidden
$this->properties->visible = 0;
// Fire the hook
self::calendar_event_hook('hide_event', array($this->properties));
}
// Update the database to reflect this change
return $DB->set_field('event', 'visible', $this->properties->visible, array('id'=>$this->properties->id));
}
/**
* Attempts to call the hook for the specified action should a calendar type
* by set $CFG->calendar, and the appopriate function defined
*
* @param string $action One of `update_event`, `add_event`, `delete_event`, `show_event`, `hide_event`
* @param array $args The args to pass to the hook, usually the event is the first element
* @return bool attempts to call event hook
*/
public static function calendar_event_hook($action, array $args) {
global $CFG;
static $extcalendarinc;
if ($extcalendarinc === null) {
if (!empty($CFG->calendar) && file_exists($CFG->dirroot .'/calendar/'. $CFG->calendar .'/lib.php')) {
include_once($CFG->dirroot .'/calendar/'. $CFG->calendar .'/lib.php');
$extcalendarinc = true;
} else {
$extcalendarinc = false;
}
}
if($extcalendarinc === false) {
return false;
}
$hook = $CFG->calendar .'_'.$action;
if (function_exists($hook)) {
call_user_func_array($hook, $args);
return true;
}
return false;
}
/**
* Returns a calendar_event object when provided with an event id
*
* This function makes use of MUST_EXIST, if the event id passed in is invalid
* it will result in an exception being thrown
*
* @param int|object $param event object or event id
* @return calendar_event|false status for loading calendar_event
*/
public static function load($param) {
global $DB;
if (is_object($param)) {
$event = new calendar_event($param);
} else {
$event = $DB->get_record('event', array('id'=>(int)$param), '*', MUST_EXIST);
$event = new calendar_event($event);
}
return $event;
}
/**
* Creates a new event and returns a calendar_event object
*
* @param object|array $properties An object containing event properties
* @return calendar_event|false The event object or false if it failed
*/
public static function create($properties) {
if (is_array($properties)) {
$properties = (object)$properties;
}
if (!is_object($properties)) {
throw new coding_exception('When creating an event properties should be either an object or an assoc array');
}
$event = new calendar_event($properties);
if ($event->update($properties)) {
return $event;
} else {
return false;
}
}
}
/**
* Calendar information class
*
* This class is used simply to organise the information pertaining to a calendar
* and is used primarily to make information easily available.
*
* @package core_calendar
* @category calendar
* @copyright 2010 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class calendar_information {
/** @var int The day */
public $day;
/** @var int The month */
public $month;
/** @var int The year */
public $year;
/** @var int A course id */
public $courseid = null;
/** @var array An array of courses */
public $courses = array();
/** @var array An array of groups */
public $groups = array();
/** @var array An array of users */
public $users = array();
/**
* Creates a new instance
*
* @param int $day the number of the day
* @param int $month the number of the month
* @param int $year the number of the year
*/
public function __construct($day=0, $month=0, $year=0) {
$date = usergetdate(time());
if (empty($day)) {
$day = $date['mday'];
}
if (empty($month)) {
$month = $date['mon'];
}
if (empty($year)) {
$year = $date['year'];
}
$this->day = $day;
$this->month = $month;
$this->year = $year;
}
/**
* Initialize calendar information
*
* @param stdClass $course object
* @param array $coursestoload An array of courses [$course->id => $course]
* @param bool $ignorefilters options to use filter
*/
public function prepare_for_view(stdClass $course, array $coursestoload, $ignorefilters = false) {
$this->courseid = $course->id;
$this->course = $course;
list($courses, $group, $user) = calendar_set_filters($coursestoload, $ignorefilters);
$this->courses = $courses;
$this->groups = $group;
$this->users = $user;
}
/**
* Ensures the date for the calendar is correct and either sets it to now
* or throws a moodle_exception if not
*
* @param bool $defaultonow use current time
* @throws moodle_exception
* @return bool validation of checkdate
*/
public function checkdate($defaultonow = true) {
if (!checkdate($this->month, $this->day, $this->year)) {
if ($defaultonow) {
$now = usergetdate(time());
$this->day = intval($now['mday']);
$this->month = intval($now['mon']);
$this->year = intval($now['year']);
return true;
} else {
throw new moodle_exception('invaliddate');
}
}
return true;
}
/**
* Gets todays timestamp for the calendar
*
* @return int today timestamp
*/
public function timestamp_today() {
return make_timestamp($this->year, $this->month, $this->day);
}
/**
* Gets tomorrows timestamp for the calendar
*
* @return int tomorrow timestamp
*/
public function timestamp_tomorrow() {
return make_timestamp($this->year, $this->month, $this->day+1);
}
/**
* Adds the pretend blocks for teh calendar
*
* @param core_calendar_renderer $renderer
* @param bool $showfilters display filters, false is set as default
* @param string|null $view preference view options (eg: day, month, upcoming)
*/
public function add_sidecalendar_blocks(core_calendar_renderer $renderer, $showfilters=false, $view=null) {
if ($showfilters) {
$filters = new block_contents();
$filters->content = $renderer->fake_block_filters($this->courseid, $this->day, $this->month, $this->year, $view, $this->courses);
$filters->footer = '';
$filters->title = get_string('eventskey', 'calendar');
$renderer->add_pretend_calendar_block($filters, BLOCK_POS_RIGHT);
}
$block = new block_contents;
$block->content = $renderer->fake_block_threemonths($this);
$block->footer = '';
$block->title = get_string('monthlyview', 'calendar');
$renderer->add_pretend_calendar_block($block, BLOCK_POS_RIGHT);
}
}
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