function calendar_session_vars($course = null)
{
global $SESSION, $USER;
if (!empty($USER->id) && isset($USER->realuser) && !isset($SESSION->cal_loggedinas)) {
// We just logged in as someone else, update the filtering
unset($SESSION->cal_users_shown);
unset($SESSION->cal_courses_shown);
$SESSION->cal_loggedinas = true;
if (intval(get_user_preferences('calendar_persistflt', 0))) {
calendar_set_filters_status(get_user_preferences('calendar_savedflt', 0xff));
}
} else {
if (!empty($USER->id) && !isset($USER->realuser) && isset($SESSION->cal_loggedinas)) {
// We just logged back to our real self, update again
unset($SESSION->cal_users_shown);
unset($SESSION->cal_courses_shown);
unset($SESSION->cal_loggedinas);
if (intval(get_user_preferences('calendar_persistflt', 0))) {
calendar_set_filters_status(get_user_preferences('calendar_savedflt', 0xff));
}
}
}
if (!isset($SESSION->cal_course_referer)) {
$SESSION->cal_course_referer = 0;
}
if (!isset($SESSION->cal_show_global)) {
$SESSION->cal_show_global = true;
}
if (!isset($SESSION->cal_show_groups)) {
$SESSION->cal_show_groups = true;
}
if (!isset($SESSION->cal_show_course)) {
$SESSION->cal_show_course = true;
}
if (!isset($SESSION->cal_show_user)) {
$SESSION->cal_show_user = true;
}
if (isset($course)) {
// speedup hack for calendar related blocks
$SESSION->cal_courses_shown = array($course->id => $course);
} else {
$SESSION->cal_courses_shown = calendar_get_default_courses(true);
}
if (empty($SESSION->cal_users_shown)) {
// The empty() instead of !isset() here makes a whole world of difference,
// as it will automatically change to the user's id when the user first logs
// in. With !isset(), it would never do that.
$SESSION->cal_users_shown = !empty($USER->id) ? $USER->id : false;
} else {
if (is_numeric($SESSION->cal_users_shown) && !empty($USER->id) && $SESSION->cal_users_shown != $USER->id) {
// Follow the white rabbit, for example if a teacher logs in as a student
$SESSION->cal_users_shown = $USER->id;
}
}
}
/**
* When logging in, this function is run to set certain preferences
* for the current SESSION
*/
function set_login_session_preferences()
{
global $SESSION, $CFG;
$SESSION->justloggedin = true;
unset($SESSION->lang);
// Restore the calendar filters, if saved
if (intval(get_user_preferences('calendar_persistflt', 0))) {
include_once $CFG->dirroot . '/calendar/lib.php';
calendar_set_filters_status(get_user_preferences('calendar_savedflt', 0xff));
}
}
