mirrored from git://git.moodle.org/moodle.git
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locallib.php
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locallib.php
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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Library of internal classes and functions for module SCORM
*
* @package mod_scorm
* @copyright 1999 onwards Roberto Pinna
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once("$CFG->dirroot/mod/scorm/lib.php");
require_once("$CFG->libdir/filelib.php");
// Constants and settings for module scorm.
define('SCORM_UPDATE_NEVER', '0');
define('SCORM_UPDATE_EVERYDAY', '2');
define('SCORM_UPDATE_EVERYTIME', '3');
define('SCORM_SKIPVIEW_NEVER', '0');
define('SCORM_SKIPVIEW_FIRST', '1');
define('SCORM_SKIPVIEW_ALWAYS', '2');
define('SCO_ALL', 0);
define('SCO_DATA', 1);
define('SCO_ONLY', 2);
define('GRADESCOES', '0');
define('GRADEHIGHEST', '1');
define('GRADEAVERAGE', '2');
define('GRADESUM', '3');
define('HIGHESTATTEMPT', '0');
define('AVERAGEATTEMPT', '1');
define('FIRSTATTEMPT', '2');
define('LASTATTEMPT', '3');
define('TOCJSLINK', 1);
define('TOCFULLURL', 2);
// Local Library of functions for module scorm.
/**
* @package mod_scorm
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class scorm_package_file_info extends file_info_stored {
public function get_parent() {
if ($this->lf->get_filepath() === '/' and $this->lf->get_filename() === '.') {
return $this->browser->get_file_info($this->context);
}
return parent::get_parent();
}
public function get_visible_name() {
if ($this->lf->get_filepath() === '/' and $this->lf->get_filename() === '.') {
return $this->topvisiblename;
}
return parent::get_visible_name();
}
}
/**
* Returns an array of the popup options for SCORM and each options default value
*
* @return array an array of popup options as the key and their defaults as the value
*/
function scorm_get_popup_options_array() {
$cfgscorm = get_config('scorm');
return array('scrollbars' => isset($cfgscorm->scrollbars) ? $cfgscorm->scrollbars : 0,
'directories' => isset($cfgscorm->directories) ? $cfgscorm->directories : 0,
'location' => isset($cfgscorm->location) ? $cfgscorm->location : 0,
'menubar' => isset($cfgscorm->menubar) ? $cfgscorm->menubar : 0,
'toolbar' => isset($cfgscorm->toolbar) ? $cfgscorm->toolbar : 0,
'status' => isset($cfgscorm->status) ? $cfgscorm->status : 0);
}
/**
* Returns an array of the array of what grade options
*
* @return array an array of what grade options
*/
function scorm_get_grade_method_array() {
return array (GRADESCOES => get_string('gradescoes', 'scorm'),
GRADEHIGHEST => get_string('gradehighest', 'scorm'),
GRADEAVERAGE => get_string('gradeaverage', 'scorm'),
GRADESUM => get_string('gradesum', 'scorm'));
}
/**
* Returns an array of the array of what grade options
*
* @return array an array of what grade options
*/
function scorm_get_what_grade_array() {
return array (HIGHESTATTEMPT => get_string('highestattempt', 'scorm'),
AVERAGEATTEMPT => get_string('averageattempt', 'scorm'),
FIRSTATTEMPT => get_string('firstattempt', 'scorm'),
LASTATTEMPT => get_string('lastattempt', 'scorm'));
}
/**
* Returns an array of the array of skip view options
*
* @return array an array of skip view options
*/
function scorm_get_skip_view_array() {
return array(SCORM_SKIPVIEW_NEVER => get_string('never'),
SCORM_SKIPVIEW_FIRST => get_string('firstaccess', 'scorm'),
SCORM_SKIPVIEW_ALWAYS => get_string('always'));
}
/**
* Returns an array of the array of hide table of contents options
*
* @return array an array of hide table of contents options
*/
function scorm_get_hidetoc_array() {
return array(SCORM_TOC_SIDE => get_string('sided', 'scorm'),
SCORM_TOC_HIDDEN => get_string('hidden', 'scorm'),
SCORM_TOC_POPUP => get_string('popupmenu', 'scorm'),
SCORM_TOC_DISABLED => get_string('disabled', 'scorm'));
}
/**
* Returns an array of the array of update frequency options
*
* @return array an array of update frequency options
*/
function scorm_get_updatefreq_array() {
return array(SCORM_UPDATE_NEVER => get_string('never'),
SCORM_UPDATE_EVERYDAY => get_string('everyday', 'scorm'),
SCORM_UPDATE_EVERYTIME => get_string('everytime', 'scorm'));
}
/**
* Returns an array of the array of popup display options
*
* @return array an array of popup display options
*/
function scorm_get_popup_display_array() {
return array(0 => get_string('currentwindow', 'scorm'),
1 => get_string('popup', 'scorm'));
}
/**
* Returns an array of the array of navigation buttons display options
*
* @return array an array of navigation buttons display options
*/
function scorm_get_navigation_display_array() {
return array(SCORM_NAV_DISABLED => get_string('no'),
SCORM_NAV_UNDER_CONTENT => get_string('undercontent', 'scorm'),
SCORM_NAV_FLOATING => get_string('floating', 'scorm'));
}
/**
* Returns an array of the array of attempt options
*
* @return array an array of attempt options
*/
function scorm_get_attempts_array() {
$attempts = array(0 => get_string('nolimit', 'scorm'),
1 => get_string('attempt1', 'scorm'));
for ($i = 2; $i <= 6; $i++) {
$attempts[$i] = get_string('attemptsx', 'scorm', $i);
}
return $attempts;
}
/**
* Returns an array of the attempt status options
*
* @return array an array of attempt status options
*/
function scorm_get_attemptstatus_array() {
return array(SCORM_DISPLAY_ATTEMPTSTATUS_NO => get_string('no'),
SCORM_DISPLAY_ATTEMPTSTATUS_ALL => get_string('attemptstatusall', 'scorm'),
SCORM_DISPLAY_ATTEMPTSTATUS_MY => get_string('attemptstatusmy', 'scorm'),
SCORM_DISPLAY_ATTEMPTSTATUS_ENTRY => get_string('attemptstatusentry', 'scorm'));
}
/**
* Extracts scrom package, sets up all variables.
* Called whenever scorm changes
* @param object $scorm instance - fields are updated and changes saved into database
* @param bool $full force full update if true
* @return void
*/
function scorm_parse($scorm, $full) {
global $CFG, $DB;
$cfgscorm = get_config('scorm');
if (!isset($scorm->cmid)) {
$cm = get_coursemodule_from_instance('scorm', $scorm->id);
$scorm->cmid = $cm->id;
}
$context = context_module::instance($scorm->cmid);
$newhash = $scorm->sha1hash;
if ($scorm->scormtype === SCORM_TYPE_LOCAL or $scorm->scormtype === SCORM_TYPE_LOCALSYNC) {
$fs = get_file_storage();
$packagefile = false;
$packagefileimsmanifest = false;
if ($scorm->scormtype === SCORM_TYPE_LOCAL) {
if ($packagefile = $fs->get_file($context->id, 'mod_scorm', 'package', 0, '/', $scorm->reference)) {
if ($packagefile->is_external_file()) { // Get zip file so we can check it is correct.
$packagefile->import_external_file_contents();
}
$newhash = $packagefile->get_contenthash();
if (strtolower($packagefile->get_filename()) == 'imsmanifest.xml') {
$packagefileimsmanifest = true;
}
} else {
$newhash = null;
}
} else {
if (!$cfgscorm->allowtypelocalsync) {
// Sorry - localsync disabled.
return;
}
if ($scorm->reference !== '') {
$fs->delete_area_files($context->id, 'mod_scorm', 'package');
$filerecord = array('contextid' => $context->id, 'component' => 'mod_scorm', 'filearea' => 'package',
'itemid' => 0, 'filepath' => '/');
if ($packagefile = $fs->create_file_from_url($filerecord, $scorm->reference, array('calctimeout' => true), true)) {
$newhash = $packagefile->get_contenthash();
} else {
$newhash = null;
}
}
}
if ($packagefile) {
if (!$full and $packagefile and $scorm->sha1hash === $newhash) {
if (strpos($scorm->version, 'SCORM') !== false) {
if ($packagefileimsmanifest || $fs->get_file($context->id, 'mod_scorm', 'content', 0, '/', 'imsmanifest.xml')) {
// No need to update.
return;
}
} else if (strpos($scorm->version, 'AICC') !== false) {
// TODO: add more sanity checks - something really exists in scorm_content area.
return;
}
}
if (!$packagefileimsmanifest) {
// Now extract files.
$fs->delete_area_files($context->id, 'mod_scorm', 'content');
$packer = get_file_packer('application/zip');
$packagefile->extract_to_storage($packer, $context->id, 'mod_scorm', 'content', 0, '/');
}
} else if (!$full) {
return;
}
if ($packagefileimsmanifest) {
require_once("$CFG->dirroot/mod/scorm/datamodels/scormlib.php");
// Direct link to imsmanifest.xml file.
if (!scorm_parse_scorm($scorm, $packagefile)) {
$scorm->version = 'ERROR';
}
} else if ($manifest = $fs->get_file($context->id, 'mod_scorm', 'content', 0, '/', 'imsmanifest.xml')) {
require_once("$CFG->dirroot/mod/scorm/datamodels/scormlib.php");
// SCORM.
if (!scorm_parse_scorm($scorm, $manifest)) {
$scorm->version = 'ERROR';
}
} else {
require_once("$CFG->dirroot/mod/scorm/datamodels/aicclib.php");
// AICC.
$result = scorm_parse_aicc($scorm);
if (!$result) {
$scorm->version = 'ERROR';
} else {
$scorm->version = 'AICC';
}
}
} else if ($scorm->scormtype === SCORM_TYPE_EXTERNAL and $cfgscorm->allowtypeexternal) {
require_once("$CFG->dirroot/mod/scorm/datamodels/scormlib.php");
// SCORM only, AICC can not be external.
if (!scorm_parse_scorm($scorm, $scorm->reference)) {
$scorm->version = 'ERROR';
}
$newhash = sha1($scorm->reference);
} else if ($scorm->scormtype === SCORM_TYPE_AICCURL and $cfgscorm->allowtypeexternalaicc) {
require_once("$CFG->dirroot/mod/scorm/datamodels/aicclib.php");
// AICC.
$result = scorm_parse_aicc($scorm);
if (!$result) {
$scorm->version = 'ERROR';
} else {
$scorm->version = 'AICC';
}
} else {
// Sorry, disabled type.
return;
}
$scorm->revision++;
$scorm->sha1hash = $newhash;
$DB->update_record('scorm', $scorm);
}
function scorm_array_search($item, $needle, $haystacks, $strict=false) {
if (!empty($haystacks)) {
foreach ($haystacks as $key => $element) {
if ($strict) {
if ($element->{$item} === $needle) {
return $key;
}
} else {
if ($element->{$item} == $needle) {
return $key;
}
}
}
}
return false;
}
function scorm_repeater($what, $times) {
if ($times <= 0) {
return null;
}
$return = '';
for ($i = 0; $i < $times; $i++) {
$return .= $what;
}
return $return;
}
function scorm_external_link($link) {
// Check if a link is external.
$result = false;
$link = strtolower($link);
if (substr($link, 0, 7) == 'http://') {
$result = true;
} else if (substr($link, 0, 8) == 'https://') {
$result = true;
} else if (substr($link, 0, 4) == 'www.') {
$result = true;
}
return $result;
}
/**
* Returns an object containing all datas relative to the given sco ID
*
* @param integer $id The sco ID
* @return mixed (false if sco id does not exists)
*/
function scorm_get_sco($id, $what=SCO_ALL) {
global $DB;
if ($sco = $DB->get_record('scorm_scoes', array('id' => $id))) {
$sco = ($what == SCO_DATA) ? new stdClass() : $sco;
if (($what != SCO_ONLY) && ($scodatas = $DB->get_records('scorm_scoes_data', array('scoid' => $id)))) {
foreach ($scodatas as $scodata) {
$sco->{$scodata->name} = $scodata->value;
}
} else if (($what != SCO_ONLY) && (!($scodatas = $DB->get_records('scorm_scoes_data', array('scoid' => $id))))) {
$sco->parameters = '';
}
return $sco;
} else {
return false;
}
}
/**
* Returns an object (array) containing all the scoes data related to the given sco ID
*
* @param integer $id The sco ID
* @param integer $organisation an organisation ID - defaults to false if not required
* @return mixed (false if there are no scoes or an array)
*/
function scorm_get_scoes($id, $organisation=false) {
global $DB;
$queryarray = array('scorm' => $id);
if (!empty($organisation)) {
$queryarray['organization'] = $organisation;
}
if ($scoes = $DB->get_records('scorm_scoes', $queryarray, 'sortorder, id')) {
// Drop keys so that it is a simple array as expected.
$scoes = array_values($scoes);
foreach ($scoes as $sco) {
if ($scodatas = $DB->get_records('scorm_scoes_data', array('scoid' => $sco->id))) {
foreach ($scodatas as $scodata) {
$sco->{$scodata->name} = $scodata->value;
}
}
}
return $scoes;
} else {
return false;
}
}
function scorm_insert_track($userid, $scormid, $scoid, $attempt, $element, $value, $forcecompleted=false, $trackdata = null) {
global $DB, $CFG;
$id = null;
if ($forcecompleted) {
// TODO - this could be broadened to encompass SCORM 2004 in future.
if (($element == 'cmi.core.lesson_status') && ($value == 'incomplete')) {
if ($track = $DB->get_record_select('scorm_scoes_track',
'userid=? AND scormid=? AND scoid=? AND attempt=? '.
'AND element=\'cmi.core.score.raw\'',
array($userid, $scormid, $scoid, $attempt))) {
$value = 'completed';
}
}
if ($element == 'cmi.core.score.raw') {
if ($tracktest = $DB->get_record_select('scorm_scoes_track',
'userid=? AND scormid=? AND scoid=? AND attempt=? '.
'AND element=\'cmi.core.lesson_status\'',
array($userid, $scormid, $scoid, $attempt))) {
if ($tracktest->value == "incomplete") {
$tracktest->value = "completed";
$DB->update_record('scorm_scoes_track', $tracktest);
}
}
}
if (($element == 'cmi.success_status') && ($value == 'passed' || $value == 'failed')) {
if ($DB->get_record('scorm_scoes_data', array('scoid' => $scoid, 'name' => 'objectivesetbycontent'))) {
$objectiveprogressstatus = true;
$objectivesatisfiedstatus = false;
if ($value == 'passed') {
$objectivesatisfiedstatus = true;
}
if ($track = $DB->get_record('scorm_scoes_track', array('userid' => $userid,
'scormid' => $scormid,
'scoid' => $scoid,
'attempt' => $attempt,
'element' => 'objectiveprogressstatus'))) {
$track->value = $objectiveprogressstatus;
$track->timemodified = time();
$DB->update_record('scorm_scoes_track', $track);
$id = $track->id;
} else {
$track = new stdClass();
$track->userid = $userid;
$track->scormid = $scormid;
$track->scoid = $scoid;
$track->attempt = $attempt;
$track->element = 'objectiveprogressstatus';
$track->value = $objectiveprogressstatus;
$track->timemodified = time();
$id = $DB->insert_record('scorm_scoes_track', $track);
}
if ($objectivesatisfiedstatus) {
if ($track = $DB->get_record('scorm_scoes_track', array('userid' => $userid,
'scormid' => $scormid,
'scoid' => $scoid,
'attempt' => $attempt,
'element' => 'objectivesatisfiedstatus'))) {
$track->value = $objectivesatisfiedstatus;
$track->timemodified = time();
$DB->update_record('scorm_scoes_track', $track);
$id = $track->id;
} else {
$track = new stdClass();
$track->userid = $userid;
$track->scormid = $scormid;
$track->scoid = $scoid;
$track->attempt = $attempt;
$track->element = 'objectivesatisfiedstatus';
$track->value = $objectivesatisfiedstatus;
$track->timemodified = time();
$id = $DB->insert_record('scorm_scoes_track', $track);
}
}
}
}
}
$track = null;
if ($trackdata !== null) {
if (isset($trackdata[$element])) {
$track = $trackdata[$element];
}
} else {
$track = $DB->get_record('scorm_scoes_track', array('userid' => $userid,
'scormid' => $scormid,
'scoid' => $scoid,
'attempt' => $attempt,
'element' => $element));
}
if ($track) {
if ($element != 'x.start.time' ) { // Don't update x.start.time - keep the original value.
if ($track->value != $value) {
$track->value = $value;
$track->timemodified = time();
$DB->update_record('scorm_scoes_track', $track);
}
$id = $track->id;
}
} else {
$track = new stdClass();
$track->userid = $userid;
$track->scormid = $scormid;
$track->scoid = $scoid;
$track->attempt = $attempt;
$track->element = $element;
$track->value = $value;
$track->timemodified = time();
$id = $DB->insert_record('scorm_scoes_track', $track);
$track->id = $id;
}
// Trigger updating grades based on a given set of SCORM CMI elements.
$scorm = false;
if (in_array($element, array('cmi.core.score.raw', 'cmi.score.raw')) ||
(in_array($element, array('cmi.completion_status', 'cmi.core.lesson_status', 'cmi.success_status'))
&& in_array($track->value, array('completed', 'passed')))) {
$scorm = $DB->get_record('scorm', array('id' => $scormid));
include_once($CFG->dirroot.'/mod/scorm/lib.php');
scorm_update_grades($scorm, $userid);
}
// Trigger CMI element events.
if (in_array($element, array('cmi.core.score.raw', 'cmi.score.raw')) ||
(in_array($element, array('cmi.completion_status', 'cmi.core.lesson_status', 'cmi.success_status'))
&& in_array($track->value, array('completed', 'failed', 'passed')))) {
if (!$scorm) {
$scorm = $DB->get_record('scorm', array('id' => $scormid));
}
$cm = get_coursemodule_from_instance('scorm', $scormid);
$data = array(
'other' => array('attemptid' => $attempt, 'cmielement' => $element, 'cmivalue' => $track->value),
'objectid' => $scorm->id,
'context' => context_module::instance($cm->id),
'relateduserid' => $userid
);
if (in_array($element, array('cmi.core.score.raw', 'cmi.score.raw'))) {
// Create score submitted event.
$event = \mod_scorm\event\scoreraw_submitted::create($data);
} else {
// Create status submitted event.
$event = \mod_scorm\event\status_submitted::create($data);
}
// Fix the missing track keys when the SCORM track record already exists, see $trackdata in datamodel.php.
// There, for performances reasons, columns are limited to: element, id, value, timemodified.
// Missing fields are: userid, scormid, scoid, attempt.
$track->userid = $userid;
$track->scormid = $scormid;
$track->scoid = $scoid;
$track->attempt = $attempt;
// Trigger submitted event.
$event->add_record_snapshot('scorm_scoes_track', $track);
$event->add_record_snapshot('course_modules', $cm);
$event->add_record_snapshot('scorm', $scorm);
$event->trigger();
}
return $id;
}
/**
* simple quick function to return true/false if this user has tracks in this scorm
*
* @param integer $scormid The scorm ID
* @param integer $userid the users id
* @return boolean (false if there are no tracks)
*/
function scorm_has_tracks($scormid, $userid) {
global $DB;
return $DB->record_exists('scorm_scoes_track', array('userid' => $userid, 'scormid' => $scormid));
}
function scorm_get_tracks($scoid, $userid, $attempt='') {
// Gets all tracks of specified sco and user.
global $DB;
if (empty($attempt)) {
if ($scormid = $DB->get_field('scorm_scoes', 'scorm', array('id' => $scoid))) {
$attempt = scorm_get_last_attempt($scormid, $userid);
} else {
$attempt = 1;
}
}
if ($tracks = $DB->get_records('scorm_scoes_track', array('userid' => $userid, 'scoid' => $scoid,
'attempt' => $attempt), 'element ASC')) {
$usertrack = scorm_format_interactions($tracks);
$usertrack->userid = $userid;
$usertrack->scoid = $scoid;
return $usertrack;
} else {
return false;
}
}
/**
* helper function to return a formatted list of interactions for reports.
*
* @param array $trackdata the records from scorm_scoes_track table
* @return object formatted list of interactions
*/
function scorm_format_interactions($trackdata) {
$usertrack = new stdClass();
// Defined in order to unify scorm1.2 and scorm2004.
$usertrack->score_raw = '';
$usertrack->status = '';
$usertrack->total_time = '00:00:00';
$usertrack->session_time = '00:00:00';
$usertrack->timemodified = 0;
foreach ($trackdata as $track) {
$element = $track->element;
$usertrack->{$element} = $track->value;
switch ($element) {
case 'cmi.core.lesson_status':
case 'cmi.completion_status':
if ($track->value == 'not attempted') {
$track->value = 'notattempted';
}
$usertrack->status = $track->value;
break;
case 'cmi.core.score.raw':
case 'cmi.score.raw':
$usertrack->score_raw = (float) sprintf('%2.2f', $track->value);
break;
case 'cmi.core.session_time':
case 'cmi.session_time':
$usertrack->session_time = $track->value;
break;
case 'cmi.core.total_time':
case 'cmi.total_time':
$usertrack->total_time = $track->value;
break;
}
if (isset($track->timemodified) && ($track->timemodified > $usertrack->timemodified)) {
$usertrack->timemodified = $track->timemodified;
}
}
return $usertrack;
}
/* Find the start and finsh time for a a given SCO attempt
*
* @param int $scormid SCORM Id
* @param int $scoid SCO Id
* @param int $userid User Id
* @param int $attemt Attempt Id
*
* @return object start and finsh time EPOC secods
*
*/
function scorm_get_sco_runtime($scormid, $scoid, $userid, $attempt=1) {
global $DB;
$timedata = new stdClass();
$params = array('userid' => $userid, 'scormid' => $scormid, 'attempt' => $attempt);
if (!empty($scoid)) {
$params['scoid'] = $scoid;
}
$tracks = $DB->get_records('scorm_scoes_track', $params, "timemodified ASC");
if ($tracks) {
$tracks = array_values($tracks);
}
if ($tracks) {
$timedata->start = $tracks[0]->timemodified;
} else {
$timedata->start = false;
}
if ($tracks && $track = array_pop($tracks)) {
$timedata->finish = $track->timemodified;
} else {
$timedata->finish = $timedata->start;
}
return $timedata;
}
function scorm_grade_user_attempt($scorm, $userid, $attempt=1) {
global $DB;
$attemptscore = new stdClass();
$attemptscore->scoes = 0;
$attemptscore->values = 0;
$attemptscore->max = 0;
$attemptscore->sum = 0;
$attemptscore->lastmodify = 0;
if (!$scoes = $DB->get_records('scorm_scoes', array('scorm' => $scorm->id), 'sortorder, id')) {
return null;
}
foreach ($scoes as $sco) {
if ($userdata = scorm_get_tracks($sco->id, $userid, $attempt)) {
if (($userdata->status == 'completed') || ($userdata->status == 'passed')) {
$attemptscore->scoes++;
}
if (!empty($userdata->score_raw) || (isset($scorm->type) && $scorm->type == 'sco' && isset($userdata->score_raw))) {
$attemptscore->values++;
$attemptscore->sum += $userdata->score_raw;
$attemptscore->max = ($userdata->score_raw > $attemptscore->max) ? $userdata->score_raw : $attemptscore->max;
if (isset($userdata->timemodified) && ($userdata->timemodified > $attemptscore->lastmodify)) {
$attemptscore->lastmodify = $userdata->timemodified;
} else {
$attemptscore->lastmodify = 0;
}
}
}
}
switch ($scorm->grademethod) {
case GRADEHIGHEST:
$score = (float) $attemptscore->max;
break;
case GRADEAVERAGE:
if ($attemptscore->values > 0) {
$score = $attemptscore->sum / $attemptscore->values;
} else {
$score = 0;
}
break;
case GRADESUM:
$score = $attemptscore->sum;
break;
case GRADESCOES:
$score = $attemptscore->scoes;
break;
default:
$score = $attemptscore->max; // Remote Learner GRADEHIGHEST is default.
}
return $score;
}
function scorm_grade_user($scorm, $userid) {
// Ensure we dont grade user beyond $scorm->maxattempt settings.
$lastattempt = scorm_get_last_attempt($scorm->id, $userid);
if ($scorm->maxattempt != 0 && $lastattempt >= $scorm->maxattempt) {
$lastattempt = $scorm->maxattempt;
}
switch ($scorm->whatgrade) {
case FIRSTATTEMPT:
return scorm_grade_user_attempt($scorm, $userid, 1);
break;
case LASTATTEMPT:
return scorm_grade_user_attempt($scorm, $userid, scorm_get_last_completed_attempt($scorm->id, $userid));
break;
case HIGHESTATTEMPT:
$maxscore = 0;
for ($attempt = 1; $attempt <= $lastattempt; $attempt++) {
$attemptscore = scorm_grade_user_attempt($scorm, $userid, $attempt);
$maxscore = $attemptscore > $maxscore ? $attemptscore : $maxscore;
}
return $maxscore;
break;
case AVERAGEATTEMPT:
$attemptcount = scorm_get_attempt_count($userid, $scorm, true, true);
if (empty($attemptcount)) {
return 0;
} else {
$attemptcount = count($attemptcount);
}
$lastattempt = scorm_get_last_attempt($scorm->id, $userid);
$sumscore = 0;
for ($attempt = 1; $attempt <= $lastattempt; $attempt++) {
$attemptscore = scorm_grade_user_attempt($scorm, $userid, $attempt);
$sumscore += $attemptscore;
}
return round($sumscore / $attemptcount);
break;
}
}
function scorm_count_launchable($scormid, $organization='') {
global $DB;
$sqlorganization = '';
$params = array($scormid);
if (!empty($organization)) {
$sqlorganization = " AND organization=?";
$params[] = $organization;
}
return $DB->count_records_select('scorm_scoes', "scorm = ? $sqlorganization AND ".
$DB->sql_isnotempty('scorm_scoes', 'launch', false, true),
$params);
}
/**
* Returns the last attempt used - if no attempts yet, returns 1 for first attempt
*
* @param int $scormid the id of the scorm.
* @param int $userid the id of the user.
*
* @return int The attempt number to use.
*/
function scorm_get_last_attempt($scormid, $userid) {
global $DB;
// Find the last attempt number for the given user id and scorm id.
$sql = "SELECT MAX(attempt)
FROM {scorm_scoes_track}
WHERE userid = ? AND scormid = ?";
$lastattempt = $DB->get_field_sql($sql, array($userid, $scormid));
if (empty($lastattempt)) {
return '1';
} else {
return $lastattempt;
}
}
/**
* Returns the last completed attempt used - if no completed attempts yet, returns 1 for first attempt
*
* @param int $scormid the id of the scorm.
* @param int $userid the id of the user.
*
* @return int The attempt number to use.
*/
function scorm_get_last_completed_attempt($scormid, $userid) {
global $DB;
// Find the last completed attempt number for the given user id and scorm id.
$sql = "SELECT MAX(attempt)
FROM {scorm_scoes_track}
WHERE userid = ? AND scormid = ?
AND (".$DB->sql_compare_text('value')." = ".$DB->sql_compare_text('?')." OR ".
$DB->sql_compare_text('value')." = ".$DB->sql_compare_text('?').")";
$lastattempt = $DB->get_field_sql($sql, array($userid, $scormid, 'completed', 'passed'));
if (empty($lastattempt)) {
return '1';
} else {
return $lastattempt;
}
}
/**
* Returns the full list of attempts a user has made.
*
* @param int $scormid the id of the scorm.
* @param int $userid the id of the user.
*
* @return array array of attemptids
*/
function scorm_get_all_attempts($scormid, $userid) {
global $DB;
$attemptids = array();
$sql = "SELECT DISTINCT attempt FROM {scorm_scoes_track} WHERE userid = ? AND scormid = ? ORDER BY attempt";
$attempts = $DB->get_records_sql($sql, array($userid, $scormid));
foreach ($attempts as $attempt) {
$attemptids[] = $attempt->attempt;
}
return $attemptids;
}
/**
* Displays the entry form and toc if required.
*
* @param stdClass $user user object
* @param stdClass $scorm scorm object
* @param string $action base URL for the organizations select box
* @param stdClass $cm course module object
*/
function scorm_print_launch ($user, $scorm, $action, $cm) {
global $CFG, $DB, $OUTPUT;
if ($scorm->updatefreq == SCORM_UPDATE_EVERYTIME) {
scorm_parse($scorm, false);
}
$organization = optional_param('organization', '', PARAM_INT);
if ($scorm->displaycoursestructure == 1) {
echo $OUTPUT->box_start('generalbox boxaligncenter toc container', 'toc');
echo html_writer::div(get_string('contents', 'scorm'), 'structurehead');
}
if (empty($organization)) {
$organization = $scorm->launch;
}
if ($orgs = $DB->get_records_select_menu('scorm_scoes', 'scorm = ? AND '.
$DB->sql_isempty('scorm_scoes', 'launch', false, true).' AND '.
$DB->sql_isempty('scorm_scoes', 'organization', false, false),
array($scorm->id), 'sortorder, id', 'id,title')) {
if (count($orgs) > 1) {
$select = new single_select(new moodle_url($action), 'organization', $orgs, $organization, null);
$select->label = get_string('organizations', 'scorm');
$select->class = 'scorm-center';
echo $OUTPUT->render($select);
}
}
$orgidentifier = '';
if ($sco = scorm_get_sco($organization, SCO_ONLY)) {
if (($sco->organization == '') && ($sco->launch == '')) {
$orgidentifier = $sco->identifier;
} else {
$orgidentifier = $sco->organization;
}
}
$scorm->version = strtolower(clean_param($scorm->version, PARAM_SAFEDIR)); // Just to be safe.
if (!file_exists($CFG->dirroot.'/mod/scorm/datamodels/'.$scorm->version.'lib.php')) {
$scorm->version = 'scorm_12';
}
require_once($CFG->dirroot.'/mod/scorm/datamodels/'.$scorm->version.'lib.php');
$result = scorm_get_toc($user, $scorm, $cm->id, TOCFULLURL, $orgidentifier);
$incomplete = $result->incomplete;
// Get latest incomplete sco to launch first.
if (!empty($result->sco->id)) {
$launchsco = $result->sco->id;
} else {
// Use launch defined by SCORM package.
$launchsco = $scorm->launch;
}
// Do we want the TOC to be displayed?
if ($scorm->displaycoursestructure == 1) {
echo $result->toc;
echo $OUTPUT->box_end();
}
// Is this the first attempt ?
$attemptcount = scorm_get_attempt_count($user->id, $scorm);
// Do not give the player launch FORM if the SCORM object is locked after the final attempt.
if ($scorm->lastattemptlock == 0 || $result->attemptleft > 0) {
echo html_writer::start_div('scorm-center');
echo html_writer::start_tag('form', array('id' => 'scormviewform',
'method' => 'post',
'action' => $CFG->wwwroot.'/mod/scorm/player.php',
'class' => 'container'));
if ($scorm->hidebrowse == 0) {
print_string('mode', 'scorm');
echo ': '.html_writer::empty_tag('input', array('type' => 'radio', 'id' => 'b', 'name' => 'mode',
'value' => 'browse', 'class' => 'm-r-1')).
html_writer::label(get_string('browse', 'scorm'), 'b');
echo html_writer::empty_tag('input', array('type' => 'radio',
'id' => 'n', 'name' => 'mode',
'value' => 'normal', 'checked' => 'checked',
'class' => 'm-x-1')).
html_writer::label(get_string('normal', 'scorm'), 'n');
} else {
echo html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'mode', 'value' => 'normal'));
}
if ($scorm->forcenewattempt == 1) {
if ($incomplete === false) {
echo html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'newattempt', 'value' => 'on'));
}
} else if (!empty($attemptcount) && ($incomplete === false) && (($result->attemptleft > 0)||($scorm->maxattempt == 0))) {
echo html_writer::empty_tag('br');
echo html_writer::checkbox('newattempt', 'on', false, '', array('id' => 'a'));
echo html_writer::label(get_string('newattempt', 'scorm'), 'a');
}
if (!empty($scorm->popup)) {
echo html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'display', 'value' => 'popup'));
}
echo html_writer::empty_tag('br');
echo html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'scoid', 'value' => $launchsco));
echo html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'cm', 'value' => $cm->id));
echo html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'currentorg', 'value' => $orgidentifier));
echo html_writer::empty_tag('input', array('type' => 'submit', 'value' => get_string('enter', 'scorm'),
'class' => 'btn btn-primary'));
echo html_writer::end_tag('form');
echo html_writer::end_div();
}
}
function scorm_simple_play($scorm, $user, $context, $cmid) {
global $DB;
$result = false;