Current File : /home/vacivi36/ava/mod/quiz/accessrule/delaybetweenattempts/rule.php
<?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_delaybetweenattempts plugin.
*
* @package quizaccess
* @subpackage delaybetweenattempts
* @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 imposing the delay between attempts settings.
*
* @copyright 2009 Tim Hunt
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class quizaccess_delaybetweenattempts extends quiz_access_rule_base {
public static function make(quiz $quizobj, $timenow, $canignoretimelimits) {
if (empty($quizobj->get_quiz()->delay1) && empty($quizobj->get_quiz()->delay2)) {
return null;
}
return new self($quizobj, $timenow);
}
public function prevent_new_attempt($numprevattempts, $lastattempt) {
if ($this->quiz->attempts > 0 && $numprevattempts >= $this->quiz->attempts) {
// No more attempts allowed anyway.
return false;
}
if ($this->quiz->timeclose != 0 && $this->timenow > $this->quiz->timeclose) {
// No more attempts allowed anyway.
return false;
}
$nextstarttime = $this->compute_next_start_time($numprevattempts, $lastattempt);
if ($this->timenow < $nextstarttime) {
if ($this->quiz->timeclose == 0 || $nextstarttime <= $this->quiz->timeclose) {
return get_string('youmustwait', 'quizaccess_delaybetweenattempts',
userdate($nextstarttime));
} else {
return get_string('youcannotwait', 'quizaccess_delaybetweenattempts');
}
}
return false;
}
/**
* Compute the next time a student would be allowed to start an attempt,
* according to this rule.
* @param int $numprevattempts number of previous attempts.
* @param object $lastattempt information about the previous attempt.
* @return number the time.
*/
protected function compute_next_start_time($numprevattempts, $lastattempt) {
if ($numprevattempts == 0) {
return 0;
}
$lastattemptfinish = $lastattempt->timefinish;
if ($this->quiz->timelimit > 0) {
$lastattemptfinish = min($lastattemptfinish,
$lastattempt->timestart + $this->quiz->timelimit);
}
if ($numprevattempts == 1 && $this->quiz->delay1) {
return $lastattemptfinish + $this->quiz->delay1;
} else if ($numprevattempts > 1 && $this->quiz->delay2) {
return $lastattemptfinish + $this->quiz->delay2;
}
return 0;
}
public function is_finished($numprevattempts, $lastattempt) {
$nextstarttime = $this->compute_next_start_time($numprevattempts, $lastattempt);
return $this->timenow <= $nextstarttime &&
$this->quiz->timeclose != 0 && $nextstarttime >= $this->quiz->timeclose;
}
}
Mini Shell