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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/>.
/**
* Implementaton of the quizaccess_openclosedate plugin.
*
* @package quizaccess
* @subpackage openclosedate
* @copyright 2011 The Open University
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
require_once($CFG->dirroot . '/mod/quiz/accessrule/accessrulebase.php');
/**
* A rule enforcing open and close dates.
*
* @copyright 2009 Tim Hunt
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class quizaccess_openclosedate extends quiz_access_rule_base {
public static function make(quiz $quizobj, $timenow, $canignoretimelimits) {
// This rule is always used, even if the quiz has no open or close date.
return new self($quizobj, $timenow);
}
public function description() {
$result = array();
if ($this->timenow < $this->quiz->timeopen) {
$result[] = get_string('quiznotavailable', 'quizaccess_openclosedate',
userdate($this->quiz->timeopen));
if ($this->quiz->timeclose) {
$result[] = get_string('quizcloseson', 'quiz', userdate($this->quiz->timeclose));
}
} else if ($this->quiz->timeclose && $this->timenow > $this->quiz->timeclose) {
$result[] = get_string('quizclosed', 'quiz', userdate($this->quiz->timeclose));
} else {
if ($this->quiz->timeopen) {
$result[] = get_string('quizopenedon', 'quiz', userdate($this->quiz->timeopen));
}
if ($this->quiz->timeclose) {
$result[] = get_string('quizcloseson', 'quiz', userdate($this->quiz->timeclose));
}
}
return $result;
}
public function prevent_access() {
$message = get_string('notavailable', 'quizaccess_openclosedate');
if ($this->timenow < $this->quiz->timeopen) {
return $message;
}
if (!$this->quiz->timeclose) {
return false;
}
if ($this->timenow <= $this->quiz->timeclose) {
return false;
}
if ($this->quiz->overduehandling != 'graceperiod') {
return $message;
}
if ($this->timenow <= $this->quiz->timeclose + $this->quiz->graceperiod) {
return false;
}
return $message;
}
public function is_finished($numprevattempts, $lastattempt) {
return $this->quiz->timeclose && $this->timenow > $this->quiz->timeclose;
}
public function end_time($attempt) {
if ($this->quiz->timeclose) {
return $this->quiz->timeclose;
}
return false;
}
public function time_left_display($attempt, $timenow) {
// If this is a teacher preview after the close date, do not show
// the time.
if ($attempt->preview && $timenow > $this->quiz->timeclose) {
return false;
}
// Otherwise, return to the time left until the close date, providing that is
// less than QUIZ_SHOW_TIME_BEFORE_DEADLINE.
$endtime = $this->end_time($attempt);
if ($endtime !== false && $timenow > $endtime - QUIZ_SHOW_TIME_BEFORE_DEADLINE) {
return $endtime - $timenow;
}
return false;
}
}
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