/mod/scorm/locallib.php
PHP | 2505 lines | 1849 code | 248 blank | 408 comment | 564 complexity | a7be4ad0ea071443075fc55fd7f0eb0b MD5 | raw file
Possible License(s): Apache-2.0, LGPL-2.1, BSD-3-Clause, MIT, GPL-3.0
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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);
- define('SCORM_FORCEATTEMPT_NO', 0);
- define('SCORM_FORCEATTEMPT_ONCOMPLETE', 1);
- define('SCORM_FORCEATTEMPT_ALWAYS', 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'));
- }
- /**
- * Returns an array of the force attempt options
- *
- * @return array an array of attempt options
- */
- function scorm_get_forceattempt_array() {
- return array(SCORM_FORCEATTEMPT_NO => get_string('no'),
- SCORM_FORCEATTEMPT_ONCOMPLETE => get_string('forceattemptoncomplete', 'scorm'),
- SCORM_FORCEATTEMPT_ALWAYS => get_string('forceattemptalways', '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, $userid, scorm_get_first_attempt($scorm->id, $userid));
- break;
- case LASTATTEMPT:
- return scorm_grade_user_attempt($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 first attempt used - if no attempts yet, returns 1 for first attempt.
- *
- * @param int $scormid the id of the scorm.
- * @param int $userid the id of the user.
- *
- * @return int The first attempt number.
- */
- function scorm_get_first_attempt($scormid, $userid) {
- global $DB;
- // Find the first attempt number for the given user id and scorm id.
- $sql = "SELECT MIN(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 = $result->incomplete;
- // Get latest incomplete sco to launch first if force new attempt isn't set to always.
- if (!empty($result->sco->id) && $scorm->forcenewattempt != SCORM_FORCEATTEMPT_ALWAYS) {
- $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' => 'mr-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' => 'mx-1')).
- html_writer::label(get_string('normal', 'scorm'), 'n');
- } else {
- echo html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'mode', 'value' => 'normal'));
- }
- if (!empty($scorm->forcenewattempt)) {
- if ($scorm->forcenewattempt == SCORM_FORCEATTEMPT_ALWAYS ||
- ($scorm->forcenewattempt == SCORM_FORCEATTEMPT_ONCOMPLETE && $incomplete === false)) {
- echo html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'newattempt', 'value' => 'on'));
- }
- } else if (!empty($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;
- if (has_capability('mod/scorm:viewreport', $context)) {
- // If this user can view reports, don't skipview so they can see links to reports.
- return $result;
- }
- if ($scorm->updatefreq == SCORM_UPDATE_EVERYTIME) {
- scorm_parse($scorm, false);
- }
- $scoes = $DB->get_records_select('scorm_scoes', 'scorm = ? AND '.
- $DB->sql_isnotempty('scorm_scoes', 'launch', false, true), array($scorm->id), 'sortorder, id', 'id');
- if ($scoes) {
- $orgidentifier = '';
- if ($sco = scorm_get_sco($scorm->launch, SCO_ONLY)) {
- if (($sco->organization == '') && ($sco->launch == '')) {
- $orgidentifier = $sco->identifier;
- } else {
- $orgidentifier = $sco->organization;
- }
- }
- if ($scorm->skipview >= SCORM_SKIPVIEW_FIRST) {
- $sco = current($scoes);
- $result = scorm_get_toc($user, $scorm, $cmid, TOCFULLURL, $orgidentifier);
- $url = new moodle_url('/mod/scorm/player.php', array('a' => $scorm->id, 'currentorg' => $orgidentifier));
- // Set last incomplete sco to launch first if forcenewattempt not set to always.
- if (!empty($result->sco->id) && $scorm->forcenewattempt != SCORM_FORCEATTEMPT_ALWAYS) {
- $url->param('scoid', $result->sco->id);
- } else {
- $url->param('scoid', $sco->id);
- }
- if ($scorm->skipview == SCORM_SKIPVIEW_ALWAYS || !scorm_has_tracks($scorm->id, $user->id)) {
- if ($scorm->forcenewattempt == SCORM_FORCEATTEMPT_ALWAYS ||
- ($result->incomplete === false && $scorm->forcenewattempt == SCORM_FORCEATTEMPT_ONCOMPLETE)) {
- $url->param('newattempt', 'on');
- }
- redirect($url);
- }
- }
- }
- return $result;
- }
- function scorm_get_count_users($scormid, $groupingid=null) {
- global $CFG, $DB;
- if (!empty($groupingid)) {
- $sql = "SELECT COUNT(DISTINCT st.userid)
- FROM {scorm_scoes_track} st
- INNER JOIN {groups_members} gm ON st.userid = gm.userid
- INNER JOIN {groupings_groups} gg ON gm.groupid = gg.groupid
- WHERE st.scormid = ? AND gg.groupingid = ?
- ";
- $params = array($scormid, $groupingid);
- } else {
- $sql = "SELECT COUNT(DISTINCT st.userid)
- FROM {scorm_scoes_track} st
- WHERE st.scormid = ?
- ";
- $params = array($scormid);
- }
- return ($DB->count_records_sql($sql, $params));
- }
- /**
- * Build up the JavaScript representation of an array element
- *
- * @param string $sversion SCORM API version
- * @param array $userdata User track data
- * @param string $elementname Name of array element to get values for
- * @param array $children list of sub elements of this array element that also need instantiating
- * @return Javascript array elements
- */
- function scorm_reconstitute_array_element($sversion, $userdata, $elementname, $children) {
- // Reconstitute comments_from_learner and comments_from_lms.
- $current = '';
- $currentsubelement = '';
- $currentsub = '';
- $count = 0;
- $countsub = 0;
- $scormseperator = '_';
- $return = '';
- if (scorm_version_check($sversion, SCORM_13)) { // Scorm 1.3 elements use a . instead of an _ .
- $scormseperator = '.';
- }
- // Filter out the ones we want.
- $elementlist = array();
- foreach ($userdata as $element => $value) {
- if (substr($element, 0, strlen($elementname)) == $elementname) {
- $elementlist[$element] = $value;
- }
- }
- // Sort elements in .n array order.
- uksort($elementlist, "scorm_element_cmp");
- // Generate JavaScript.
- foreach ($elementlist as $element => $value) {
- if (scorm_version_check($sversion, SCORM_13)) {
- $element = preg_replace('/\.(\d+)\./', ".N\$1.", $element);
- preg_match('/\.(N\d+)\./', $element, $matches);
- } else {
- $element = preg_replace('/\.(\d+)\./', "_\$1.", $element);
- preg_match('/\_(\d+)\./', $element, $matches);
- }
- if (count($matches) > 0 && $current != $matches[1]) {
- if ($countsub > 0) {
- $return .= ' '.$elementname.$scormseperator.$current.'.'.$currentsubelement.'._count = '.$countsub.";\n";
- }
- $current = $matches[1];
- $count++;
- $currentsubelement = '';
- $currentsub = '';
- $countsub = 0;
- $end = strpos($element, $matches[1]) + strlen($matches[1]);
- $subelement = substr($element, 0, $end);
- $return .= ' '.$subelement." = new Object();\n";
- // Now add the children.
- foreach ($children as $child) {
- $return .= ' '.$subelement.".".$child." = new Object();\n";
- $return .= ' '.$subelement.".".$child."._children = ".$child."_children;\n";
- }
- }
- // Now - flesh out the second level elements if there are any.
- if (scorm_version_check($sversion, SCORM_13)) {
- $element = preg_replace('/(.*?\.N\d+\..*?)\.(\d+)\./', "\$1.N\$2.", $element);
- preg_match('/.*?\.N\d+\.(.*?)\.(N\d+)\./', $element, $matches);
- } else {
- $element = preg_replace('/(.*?\_\d+\..*?)\.(\d+)\./', "\$1_\$2.", $element);
- preg_match('/.*?\_\d+\.(.*?)\_(\d+)\./', $element, $matches);
- }
- // Check the sub element type.
- if (count($matches) > 0 && $currentsubelement != $matches[1]) {
- if ($countsub > 0) {
- $return .= ' '.$elementname.$scormseperator.$current.'.'.$currentsubelement.'._count = '.$countsub.";\n";
- }
- $currentsubelement = $matches[1];
- $currentsub = '';
- $countsub = 0;
- $end = strpos($element, $matches[1]) + strlen($matches[1]);
- $subelement = substr($element, 0, $end);
- $return .= ' '.$subelement." = new Object();\n";
- }
- // Now check the subelement subscript.
- if (count($matches) > 0 && $currentsub != $matches[2]) {
- $currentsub = $matches[2];
- $countsub++;
- $end = strrpos($element, $matches[2]) + strlen($matches[2]);
- $subelement = substr($element, 0, $end);
- $return .= ' '.$subelement." = new Object();\n";
- }
- $return .= ' '.$element.' = '.json_encode($value).";\n";
- }
- if ($countsub > 0) {
- $return .= ' '.$elementname.$scormseperator.$current.'.'.$currentsubelement.'._count = '.$countsub.";\n";
- }
- if ($count > 0) {
- $return .= ' '.$elementname.'._count = '.$count.";\n";
- }
- return $return;
- }
- /**
- * Build up the JavaScript representation of an array element
- *
- * @param string $a left array element
- * @param string $b right array element
- * @return comparator - 0,1,-1
- */
- function scorm_element_cmp($a, $b) {
- preg_match('/.*?(\d+)\./', $a, $matches);
- $left = intval($matches[1]);
- preg_match('/.?(\d+)\./', $b, $matches);
- $right = intval($matches[1]);
- if ($left < $right) {
- return -1; // Smaller.
- } else if ($left > $right) {
- return 1; // Bigger.
- } else {
- // Look for a second level qualifier eg cmi.interactions_0.correct_responses_0.pattern.
- if (preg_match('/.*?(\d+)\.(.*?)\.(\d+)\./', $a, $matches)) {
- $leftterm = intval($matches[2]);
- $left = intval($matches[3]);
- if (preg_match('/.*?(\d+)\.(.*?)\.(\d+)\./', $b, $matches)) {
- $rightterm = intval($matches[2]);
- $right = intval($matches[3]);
- if ($leftterm < $rightterm) {
- return -1; // Smaller.
- } else if ($leftterm > $rightterm) {
- return 1; // Bigger.
- } else {
- if ($left < $right) {
- return -1; // Smaller.
- } else if ($left > $right) {
- return 1; // Bigger.
- }
- }
- }
- }
- // Fall back for no second level matches or second level matches are equal.
- return 0; // Equal to.
- }
- }
- /**
- * Generate the user attempt status string
- *
- * @param object $user Current context user
- * @param object $scorm a moodle scrom object - mdl_scorm
- * @return string - Attempt status string
- */
- function scorm_get_attempt_status($user, $scorm, $cm='') {
- global $DB, $PAGE, $OUTPUT;
- $attempts = scorm_get_attempt_count($user->id, $scorm, true);
- if (empty($attempts)) {
- $attemptcount = 0;
- } else {
- $attemptcount = count($attempts);
- }
- $result = html_writer::start_tag('p').get_string('noattemptsallowed', 'scorm').': ';
- if ($scorm->maxattempt > 0) {
- $result .= $scorm->maxattempt . html_writer::empty_tag('br');
- } else {
- $result .= get_string('unlimited').html_writer::empty_tag('br');
- }
- $result .= get_string('noattemptsmade', 'scorm').': ' . $attemptcount . html_writer::empty_tag('br');
- if ($scorm->maxattempt == 1) {
- switch ($scorm->grademethod) {
- case GRADEHIGHEST:
- $grademethod = get_string('gradehighest', 'scorm');
- break;
- case GRADEAVERAGE:
- $grademethod = get_string('gradeaverage', 'scorm');
- break;
- case GRADESUM:
- $grademethod = get_string('gradesum', 'scorm');
- break;
- case GRADESCOES:
- $grademethod = get_string('gradescoes', 'scorm');
- break;
- }
- } else {
- switch ($scorm->whatgrade) {
- case HIGHESTATTEMPT:
- $grademethod = get_string('highestattempt', 'scorm');
- break;
- case AVERAGEATTEMPT:
- $grademethod = get_string('…
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