mirror of
https://github.com/moodle/moodle.git
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1857 lines
69 KiB
PHP
1857 lines
69 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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require_once("$CFG->dirroot/mod/scorm/lib.php");
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require_once("$CFG->libdir/filelib.php");
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/// Constants and settings for module scorm
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define('SCORM_UPDATE_NEVER', '0');
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define('SCORM_UPDATE_EVERYDAY', '2');
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define('SCORM_UPDATE_EVERYTIME', '3');
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define('SCORM_SKIPVIEW_NEVER', '0');
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define('SCORM_SKIPVIEW_FIRST', '1');
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define('SCORM_SKIPVIEW_ALWAYS', '2');
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define('SCO_ALL', 0);
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define('SCO_DATA', 1);
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define('SCO_ONLY', 2);
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define('GRADESCOES', '0');
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define('GRADEHIGHEST', '1');
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define('GRADEAVERAGE', '2');
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define('GRADESUM', '3');
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define('HIGHESTATTEMPT', '0');
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define('AVERAGEATTEMPT', '1');
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define('FIRSTATTEMPT', '2');
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define('LASTATTEMPT', '3');
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define('TOCJSLINK', 1);
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define('TOCFULLURL', 2);
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/// Local Library of functions for module scorm
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/**
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* @package mod-scorm
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* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class scorm_package_file_info extends file_info_stored {
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public function get_parent() {
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if ($this->lf->get_filepath() === '/' and $this->lf->get_filename() === '.') {
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return $this->browser->get_file_info($this->context);
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}
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return parent::get_parent();
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}
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public function get_visible_name() {
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if ($this->lf->get_filepath() === '/' and $this->lf->get_filename() === '.') {
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return $this->topvisiblename;
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}
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return parent::get_visible_name();
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}
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}
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/**
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* Returns an array of the popup options for SCORM and each options default value
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*
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* @return array an array of popup options as the key and their defaults as the value
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*/
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function scorm_get_popup_options_array() {
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global $CFG;
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$cfg_scorm = get_config('scorm');
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return array('resizable'=> isset($cfg_scorm->resizable) ? $cfg_scorm->resizable : 0,
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'scrollbars'=> isset($cfg_scorm->scrollbars) ? $cfg_scorm->scrollbars : 0,
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'directories'=> isset($cfg_scorm->directories) ? $cfg_scorm->directories : 0,
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'location'=> isset($cfg_scorm->location) ? $cfg_scorm->location : 0,
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'menubar'=> isset($cfg_scorm->menubar) ? $cfg_scorm->menubar : 0,
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'toolbar'=> isset($cfg_scorm->toolbar) ? $cfg_scorm->toolbar : 0,
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'status'=> isset($cfg_scorm->status) ? $cfg_scorm->status : 0);
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}
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/**
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* Returns an array of the array of what grade options
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*
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* @return array an array of what grade options
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*/
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function scorm_get_grade_method_array() {
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return array (GRADESCOES => get_string('gradescoes', 'scorm'),
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GRADEHIGHEST => get_string('gradehighest', 'scorm'),
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GRADEAVERAGE => get_string('gradeaverage', 'scorm'),
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GRADESUM => get_string('gradesum', 'scorm'));
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}
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/**
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* Returns an array of the array of what grade options
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*
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* @return array an array of what grade options
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*/
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function scorm_get_what_grade_array() {
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return array (HIGHESTATTEMPT => get_string('highestattempt', 'scorm'),
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AVERAGEATTEMPT => get_string('averageattempt', 'scorm'),
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FIRSTATTEMPT => get_string('firstattempt', 'scorm'),
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LASTATTEMPT => get_string('lastattempt', 'scorm'));
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}
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/**
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* Returns an array of the array of skip view options
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*
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* @return array an array of skip view options
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*/
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function scorm_get_skip_view_array() {
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return array(SCORM_SKIPVIEW_NEVER => get_string('never'),
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SCORM_SKIPVIEW_FIRST => get_string('firstaccess', 'scorm'),
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SCORM_SKIPVIEW_ALWAYS => get_string('always'));
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}
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/**
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* Returns an array of the array of hide table of contents options
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*
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* @return array an array of hide table of contents options
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*/
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function scorm_get_hidetoc_array() {
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return array(SCORM_TOC_SIDE => get_string('sided', 'scorm'),
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SCORM_TOC_HIDDEN => get_string('hidden', 'scorm'),
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SCORM_TOC_POPUP => get_string('popupmenu', 'scorm'),
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SCORM_TOC_DISABLED => get_string('disabled', 'scorm'));
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}
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/**
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* Returns an array of the array of update frequency options
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*
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* @return array an array of update frequency options
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*/
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function scorm_get_updatefreq_array() {
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return array(SCORM_UPDATE_NEVER => get_string('never'),
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SCORM_UPDATE_EVERYDAY => get_string('everyday', 'scorm'),
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SCORM_UPDATE_EVERYTIME => get_string('everytime', 'scorm'));
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}
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/**
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* Returns an array of the array of popup display options
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*
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* @return array an array of popup display options
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*/
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function scorm_get_popup_display_array() {
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return array(0 => get_string('currentwindow', 'scorm'),
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1 => get_string('popup', 'scorm'));
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}
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/**
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* Returns an array of the array of attempt options
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*
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* @return array an array of attempt options
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*/
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function scorm_get_attempts_array() {
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$attempts = array(0 => get_string('nolimit', 'scorm'),
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1 => get_string('attempt1', 'scorm'));
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for ($i=2; $i<=6; $i++) {
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$attempts[$i] = get_string('attemptsx', 'scorm', $i);
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}
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return $attempts;
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}
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/**
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* Returns an array of the attempt status options
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*
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* @return array an array of attempt status options
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*/
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function scorm_get_attemptstatus_array() {
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return array(SCORM_DISPLAY_ATTEMPTSTATUS_NO => get_string('no'),
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SCORM_DISPLAY_ATTEMPTSTATUS_ALL => get_string('attemptstatusall', 'scorm'),
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SCORM_DISPLAY_ATTEMPTSTATUS_MY => get_string('attemptstatusmy', 'scorm'),
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SCORM_DISPLAY_ATTEMPTSTATUS_ENTRY => get_string('attemptstatusentry', 'scorm'));
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}
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/**
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* Extracts scrom package, sets up all variables.
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* Called whenever scorm changes
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* @param object $scorm instance - fields are updated and changes saved into database
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* @param bool $full force full update if true
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* @return void
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*/
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function scorm_parse($scorm, $full) {
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global $CFG, $DB;
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$cfg_scorm = get_config('scorm');
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if (!isset($scorm->cmid)) {
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$cm = get_coursemodule_from_instance('scorm', $scorm->id);
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$scorm->cmid = $cm->id;
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}
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$context = context_module::instance($scorm->cmid);
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$newhash = $scorm->sha1hash;
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if ($scorm->scormtype === SCORM_TYPE_LOCAL or $scorm->scormtype === SCORM_TYPE_LOCALSYNC) {
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$fs = get_file_storage();
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$packagefile = false;
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if ($scorm->scormtype === SCORM_TYPE_LOCAL) {
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if ($packagefile = $fs->get_file($context->id, 'mod_scorm', 'package', 0, '/', $scorm->reference)) {
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if ($packagefile->is_external_file()) { // Get zip file so we can check it is correct.
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$packagefile->import_external_file_contents();
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}
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$newhash = $packagefile->get_contenthash();
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} else {
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$newhash = null;
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}
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} else {
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if (!$cfg_scorm->allowtypelocalsync) {
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// sorry - localsync disabled
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return;
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}
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if ($scorm->reference !== '' and (!$full or $scorm->sha1hash !== sha1($scorm->reference))) {
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$fs->delete_area_files($context->id, 'mod_scorm', 'package');
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$file_record = array('contextid'=>$context->id, 'component'=>'mod_scorm', 'filearea'=>'package', 'itemid'=>0, 'filepath'=>'/');
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if ($packagefile = $fs->create_file_from_url($file_record, $scorm->reference, array('calctimeout' => true))) {
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$newhash = sha1($scorm->reference);
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} else {
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$newhash = null;
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}
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}
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}
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if ($packagefile) {
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if (!$full and $packagefile and $scorm->sha1hash === $newhash) {
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if (strpos($scorm->version, 'SCORM') !== false) {
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if ($fs->get_file($context->id, 'mod_scorm', 'content', 0, '/', 'imsmanifest.xml')) {
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// no need to update
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return;
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}
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} else if (strpos($scorm->version, 'AICC') !== false) {
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// TODO: add more sanity checks - something really exists in scorm_content area
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return;
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}
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}
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// now extract files
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$fs->delete_area_files($context->id, 'mod_scorm', 'content');
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$packer = get_file_packer('application/zip');
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$packagefile->extract_to_storage($packer, $context->id, 'mod_scorm', 'content', 0, '/');
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} else if (!$full) {
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return;
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}
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if ($manifest = $fs->get_file($context->id, 'mod_scorm', 'content', 0, '/', 'imsmanifest.xml')) {
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require_once("$CFG->dirroot/mod/scorm/datamodels/scormlib.php");
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// SCORM
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if (!scorm_parse_scorm($scorm, $manifest)) {
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$scorm->version = 'ERROR';
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}
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} else {
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require_once("$CFG->dirroot/mod/scorm/datamodels/aicclib.php");
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// AICC
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if (!scorm_parse_aicc($scorm)) {
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$scorm->version = 'ERROR';
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}
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$scorm->version = 'AICC';
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}
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} else if ($scorm->scormtype === SCORM_TYPE_EXTERNAL and $cfg_scorm->allowtypeexternal) {
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require_once("$CFG->dirroot/mod/scorm/datamodels/scormlib.php");
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// SCORM only, AICC can not be external
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if (!scorm_parse_scorm($scorm, $scorm->reference)) {
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$scorm->version = 'ERROR';
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}
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$newhash = sha1($scorm->reference);
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} else if ($scorm->scormtype === SCORM_TYPE_AICCURL and $cfg_scorm->allowtypeexternalaicc) {
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require_once("$CFG->dirroot/mod/scorm/datamodels/aicclib.php");
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// AICC
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if (!scorm_parse_aicc($scorm)) {
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$scorm->version = 'ERROR';
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}
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$scorm->version = 'AICC';
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} else {
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// sorry, disabled type
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return;
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}
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$scorm->revision++;
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$scorm->sha1hash = $newhash;
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$DB->update_record('scorm', $scorm);
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}
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function scorm_array_search($item, $needle, $haystacks, $strict=false) {
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if (!empty($haystacks)) {
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foreach ($haystacks as $key => $element) {
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if ($strict) {
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if ($element->{$item} === $needle) {
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return $key;
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}
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} else {
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if ($element->{$item} == $needle) {
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return $key;
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}
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}
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}
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}
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return false;
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}
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function scorm_repeater($what, $times) {
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if ($times <= 0) {
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return null;
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}
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$return = '';
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for ($i=0; $i<$times; $i++) {
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$return .= $what;
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}
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return $return;
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}
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function scorm_external_link($link) {
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// check if a link is external
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$result = false;
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$link = strtolower($link);
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if (substr($link, 0, 7) == 'http://') {
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$result = true;
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} else if (substr($link, 0, 8) == 'https://') {
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$result = true;
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} else if (substr($link, 0, 4) == 'www.') {
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$result = true;
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}
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return $result;
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}
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/**
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* Returns an object containing all datas relative to the given sco ID
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*
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* @param integer $id The sco ID
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* @return mixed (false if sco id does not exists)
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*/
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function scorm_get_sco($id, $what=SCO_ALL) {
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global $DB;
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if ($sco = $DB->get_record('scorm_scoes', array('id'=>$id))) {
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$sco = ($what == SCO_DATA) ? new stdClass() : $sco;
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if (($what != SCO_ONLY) && ($scodatas = $DB->get_records('scorm_scoes_data', array('scoid'=>$id)))) {
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foreach ($scodatas as $scodata) {
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$sco->{$scodata->name} = $scodata->value;
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}
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} else if (($what != SCO_ONLY) && (!($scodatas = $DB->get_records('scorm_scoes_data', array('scoid'=>$id))))) {
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$sco->parameters = '';
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}
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return $sco;
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} else {
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return false;
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}
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}
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/**
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* Returns an object (array) containing all the scoes data related to the given sco ID
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*
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* @param integer $id The sco ID
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* @param integer $organisation an organisation ID - defaults to false if not required
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* @return mixed (false if there are no scoes or an array)
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*/
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function scorm_get_scoes($id, $organisation=false) {
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global $DB;
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$queryarray = array('scorm'=>$id);
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if (!empty($organisation)) {
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$queryarray['organization'] = $organisation;
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}
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if ($scoes = $DB->get_records('scorm_scoes', $queryarray, 'sortorder, id')) {
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// Drop keys so that it is a simple array as expected.
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$scoes = array_values($scoes);
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foreach ($scoes as $sco) {
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if ($scodatas = $DB->get_records('scorm_scoes_data', array('scoid'=>$sco->id))) {
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foreach ($scodatas as $scodata) {
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$sco->{$scodata->name} = $scodata->value;
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}
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}
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}
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return $scoes;
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} else {
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return false;
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}
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}
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function scorm_insert_track($userid, $scormid, $scoid, $attempt, $element, $value, $forcecompleted=false) {
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global $DB, $CFG;
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$id = null;
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if ($forcecompleted) {
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//TODO - this could be broadened to encompass SCORM 2004 in future
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if (($element == 'cmi.core.lesson_status') && ($value == 'incomplete')) {
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if ($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, $attempt))) {
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$value = 'completed';
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}
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}
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if ($element == 'cmi.core.score.raw') {
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if ($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, $attempt))) {
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if ($tracktest->value == "incomplete") {
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$tracktest->value = "completed";
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$DB->update_record('scorm_scoes_track', $tracktest);
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}
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}
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}
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if (($element == 'cmi.success_status') && ($value == 'passed' || $value == 'failed')) {
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if ($DB->get_record('scorm_scoes_data', array('scoid' => $scoid, 'name' => 'objectivesetbycontent'))) {
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$objectiveprogressstatus = true;
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$objectivesatisfiedstatus = false;
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if ($value == 'passed') {
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$objectivesatisfiedstatus = true;
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}
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if ($track = $DB->get_record('scorm_scoes_track', array('userid' => $userid,
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'scormid' => $scormid,
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'scoid' => $scoid,
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'attempt' => $attempt,
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'element' => 'objectiveprogressstatus'))) {
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$track->value = $objectiveprogressstatus;
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$track->timemodified = time();
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$DB->update_record('scorm_scoes_track', $track);
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$id = $track->id;
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} else {
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$track = new stdClass();
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$track->userid = $userid;
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$track->scormid = $scormid;
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$track->scoid = $scoid;
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$track->attempt = $attempt;
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$track->element = 'objectiveprogressstatus';
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$track->value = $objectiveprogressstatus;
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$track->timemodified = time();
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$id = $DB->insert_record('scorm_scoes_track', $track);
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}
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if ($objectivesatisfiedstatus) {
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if ($track = $DB->get_record('scorm_scoes_track', array('userid' => $userid,
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'scormid' => $scormid,
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'scoid' => $scoid,
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'attempt' => $attempt,
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'element' => 'objectivesatisfiedstatus'))) {
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$track->value = $objectivesatisfiedstatus;
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$track->timemodified = time();
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$DB->update_record('scorm_scoes_track', $track);
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$id = $track->id;
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} else {
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$track = new stdClass();
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$track->userid = $userid;
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$track->scormid = $scormid;
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$track->scoid = $scoid;
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$track->attempt = $attempt;
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$track->element = 'objectivesatisfiedstatus';
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$track->value = $objectivesatisfiedstatus;
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$track->timemodified = time();
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$id = $DB->insert_record('scorm_scoes_track', $track);
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ob_start();
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$filepath = $CFG->dataroot."\\temp\\tempfile.txt";
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$fh = fopen($filepath, "a+");
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var_dump($track);
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$string = ob_get_clean();
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fwrite($fh, $string);
|
|
fclose($fh);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
if ($track = $DB->get_record('scorm_scoes_track', array('userid' => $userid,
|
|
'scormid' => $scormid,
|
|
'scoid' => $scoid,
|
|
'attempt' => $attempt,
|
|
'element' => $element))) {
|
|
if ($element != 'x.start.time' ) { // Don't update x.start.time - keep the original 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', $track);
|
|
}
|
|
|
|
if (strstr($element, '.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);
|
|
}
|
|
|
|
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();
|
|
$sql = !empty($scoid) ? "userid=$userid AND scormid=$scormid AND scoid=$scoid AND attempt=$attempt" : "userid=$userid AND scormid=$scormid AND attempt=$attempt";
|
|
$tracks = $DB->get_records_select('scorm_scoes_track', "$sql ORDER BY 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, $scorm, true);
|
|
if (empty($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 (value='completed' OR value='passed')";
|
|
$lastattempt = $DB->get_field_sql($sql, array($userid, $scormid));
|
|
if (empty($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 $attemptids;
|
|
}
|
|
|
|
function scorm_view_display ($user, $scorm, $action, $cm) {
|
|
global $CFG, $DB, $PAGE, $OUTPUT, $COURSE;
|
|
|
|
if ($scorm->scormtype != SCORM_TYPE_LOCAL && $scorm->updatefreq == SCORM_UPDATE_EVERYTIME) {
|
|
scorm_parse($scorm, false);
|
|
}
|
|
|
|
$organization = optional_param('organization', '', PARAM_INT);
|
|
|
|
if ($scorm->displaycoursestructure == 1) {
|
|
echo $OUTPUT->box_start('generalbox boxaligncenter toc');
|
|
?>
|
|
<div class="structurehead"><?php print_string('contents', 'scorm') ?></div>
|
|
<?php
|
|
}
|
|
if (empty($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 = $result->incomplete;
|
|
|
|
// do we want the TOC to be displayed?
|
|
if ($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) {
|
|
?>
|
|
<div class="scorm-center">
|
|
<form id="scormviewform" method="post" action="<?php echo $CFG->wwwroot ?>/mod/scorm/player.php">
|
|
<?php
|
|
if ($scorm->hidebrowse == 0) {
|
|
print_string('mode', 'scorm');
|
|
echo ': <input type="radio" id="b" name="mode" value="browse" /><label for="b">'.get_string('browse', 'scorm').'</label>'."\n";
|
|
echo '<input type="radio" id="n" name="mode" value="normal" checked="checked" /><label for="n">'.get_string('normal', 'scorm')."</label>\n";
|
|
} else {
|
|
echo '<input type="hidden" name="mode" value="normal" />'."\n";
|
|
}
|
|
if ($scorm->forcenewattempt == 1) {
|
|
if ($incomplete === false) {
|
|
echo '<input type="hidden" name="newattempt" value="on" />'."\n";
|
|
}
|
|
} else if (!empty($attemptcount) && ($incomplete === false) && (($result->attemptleft > 0)||($scorm->maxattempt == 0))) {
|
|
?>
|
|
<br />
|
|
<input type="checkbox" id="a" name="newattempt" />
|
|
<label for="a"><?php print_string('newattempt', 'scorm') ?></label>
|
|
<?php
|
|
}
|
|
if (!empty($scorm->popup)) {
|
|
echo '<input type="hidden" name="display" value="popup" />'."\n";
|
|
}
|
|
?>
|
|
<br />
|
|
<input type="hidden" name="scoid"/>
|
|
<input type="hidden" name="cm" value="<?php echo $cm->id ?>"/>
|
|
<input type="hidden" name="currentorg" value="<?php echo $orgidentifier ?>" />
|
|
<input type="submit" value="<?php print_string('enter', 'scorm') ?>" />
|
|
</form>
|
|
</div>
|
|
<?php
|
|
}
|
|
}
|
|
|
|
function scorm_simple_play($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->scormtype != SCORM_TYPE_LOCAL && $scorm->updatefreq == SCORM_UPDATE_EVERYTIME) {
|
|
scorm_parse($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);
|
|
$url = new moodle_url('/mod/scorm/player.php', array('a' => $scorm->id,
|
|
'currentorg'=>$orgidentifier,
|
|
'scoid'=>$sco->id));
|
|
if ($scorm->skipview == SCORM_SKIPVIEW_ALWAYS || !scorm_has_tracks($scorm->id, $user->id)) {
|
|
if (!empty($scorm->forcenewattempt)) {
|
|
$result = scorm_get_toc($user, $scorm, $cmid, TOCFULLURL, $orgidentifier);
|
|
if ($result->incomplete === false) {
|
|
$url->param('newattempt','on');
|
|
}
|
|
}
|
|
redirect($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 $element_name Name of array element to get values for
|
|
* @param array $children list of sub elements of this array element that also need instantiating
|
|
* @return None
|
|
*/
|
|
function scorm_reconstitute_array_element($sversion, $userdata, $element_name, $children) {
|
|
// reconstitute comments_from_learner and comments_from_lms
|
|
$current = '';
|
|
$current_subelement = '';
|
|
$current_sub = '';
|
|
$count = 0;
|
|
$count_sub = 0;
|
|
$scormseperator = '_';
|
|
if (scorm_version_check($sversion, SCORM_13)) { //scorm 1.3 elements use a . instead of an _
|
|
$scormseperator = '.';
|
|
}
|
|
// filter out the ones we want
|
|
$element_list = array();
|
|
foreach ($userdata as $element => $value) {
|
|
if (substr($element, 0, strlen($element_name)) == $element_name) {
|
|
$element_list[$element] = $value;
|
|
}
|
|
}
|
|
|
|
// sort elements in .n array order
|
|
uksort($element_list, "scorm_element_cmp");
|
|
|
|
// generate JavaScript
|
|
foreach ($element_list 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 != $matches[1]) {
|
|
if ($count_sub > 0) {
|
|
echo ' '.$element_name.$scormseperator.$current.'.'.$current_subelement.'._count = '.$count_sub.";\n";
|
|
}
|
|
$current = $matches[1];
|
|
$count++;
|
|
$current_subelement = '';
|
|
$current_sub = '';
|
|
$count_sub = 0;
|
|
$end = strpos($element, $matches[1])+strlen($matches[1]);
|
|
$subelement = substr($element, 0, $end);
|
|
echo ' '.$subelement." = new Object();\n";
|
|
// now add the children
|
|
foreach ($children as $child) {
|
|
echo ' '.$subelement.".".$child." = new Object();\n";
|
|
echo ' '.$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 && $current_subelement != $matches[1]) {
|
|
if ($count_sub > 0) {
|
|
echo ' '.$element_name.$scormseperator.$current.'.'.$current_subelement.'._count = '.$count_sub.";\n";
|
|
}
|
|
$current_subelement = $matches[1];
|
|
$current_sub = '';
|
|
$count_sub = 0;
|
|
$end = strpos($element, $matches[1])+strlen($matches[1]);
|
|
$subelement = substr($element, 0, $end);
|
|
echo ' '.$subelement." = new Object();\n";
|
|
}
|
|
|
|
// now check the subelement subscript
|
|
if (count($matches) > 0 && $current_sub != $matches[2]) {
|
|
$current_sub = $matches[2];
|
|
$count_sub++;
|
|
$end = strrpos($element, $matches[2])+strlen($matches[2]);
|
|
$subelement = substr($element, 0, $end);
|
|
echo ' '.$subelement." = new Object();\n";
|
|
}
|
|
|
|
echo ' '.$element.' = \''.$value."';\n";
|
|
}
|
|
if ($count_sub > 0) {
|
|
echo ' '.$element_name.$scormseperator.$current.'.'.$current_subelement.'._count = '.$count_sub.";\n";
|
|
}
|
|
if ($count > 0) {
|
|
echo ' '.$element_name.'._count = '.$count.";\n";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
$result = '<p>'.get_string('noattemptsallowed', 'scorm').': ';
|
|
if ($scorm->maxattempt > 0) {
|
|
$result .= $scorm->maxattempt . '<br />';
|
|
} else {
|
|
$result .= get_string('unlimited').'<br />';
|
|
}
|
|
$result .= get_string('noattemptsmade', 'scorm').': ' . $attemptcount . '<br />';
|
|
|
|
if ($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('averageattempt', 'scorm');
|
|
break;
|
|
case FIRSTATTEMPT:
|
|
$grademethod = get_string('firstattempt', 'scorm');
|
|
break;
|
|
case LASTATTEMPT:
|
|
$grademethod = get_string('lastattempt', 'scorm');
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!empty($attempts)) {
|
|
$i = 1;
|
|
foreach ($attempts as $attempt) {
|
|
$gradereported = scorm_grade_user_attempt($scorm, $user->id, $attempt->attemptnumber);
|
|
if ($scorm->grademethod !== GRADESCOES && !empty($scorm->maxgrade)) {
|
|
$gradereported = $gradereported/$scorm->maxgrade;
|
|
$gradereported = number_format($gradereported*100, 0) .'%';
|
|
}
|
|
$result .= get_string('gradeforattempt', 'scorm').' ' . $i . ': ' . $gradereported .'<br />';
|
|
$i++;
|
|
}
|
|
}
|
|
$calculatedgrade = scorm_grade_user($scorm, $user->id);
|
|
if ($scorm->grademethod !== GRADESCOES && !empty($scorm->maxgrade)) {
|
|
$calculatedgrade = $calculatedgrade/$scorm->maxgrade;
|
|
$calculatedgrade = number_format($calculatedgrade*100, 0) .'%';
|
|
}
|
|
$result .= get_string('grademethod', 'scorm'). ': ' . $grademethod;
|
|
if (empty($attempts)) {
|
|
$result .= '<br />' . get_string('gradereported', 'scorm') . ': ' . get_string('none') . '<br />';
|
|
} else {
|
|
$result .= '<br />' . get_string('gradereported', 'scorm') . ': ' . $calculatedgrade . '<br />';
|
|
}
|
|
$result .= '</p>';
|
|
if ($attemptcount >= $scorm->maxattempt and $scorm->maxattempt > 0) {
|
|
$result .= '<p><font color="#cc0000">'.get_string('exceededmaxattempts', 'scorm').'</font></p>';
|
|
}
|
|
if (!empty($cm)) {
|
|
$context = context_module::instance($cm->id);
|
|
if (has_capability('mod/scorm:deleteownresponses', $context) &&
|
|
$DB->record_exists('scorm_scoes_track', array('userid' => $user->id, 'scormid' => $scorm->id))) {
|
|
//check to see if any data is stored for this user:
|
|
$deleteurl = new moodle_url($PAGE->url, array('action'=>'delete', 'sesskey' => sesskey()));
|
|
$result .= $OUTPUT->single_button($deleteurl, get_string('deleteallattempts', 'scorm'));
|
|
}
|
|
}
|
|
|
|
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Get SCORM attempt count
|
|
*
|
|
* @param object $user Current context user
|
|
* @param object $scorm a moodle scrom object - mdl_scorm
|
|
* @param bool $attempts return the list of attempts
|
|
* @return int - no. of attempts so far
|
|
*/
|
|
function scorm_get_attempt_count($userid, $scorm, $attempts_only=false) {
|
|
global $DB;
|
|
$attemptcount = 0;
|
|
$element = 'cmi.core.score.raw';
|
|
if ($scorm->grademethod == GRADESCOES) {
|
|
$element = 'cmi.core.lesson_status';
|
|
}
|
|
if (scorm_version_check($scorm->version, SCORM_13)) {
|
|
$element = 'cmi.score.raw';
|
|
}
|
|
$attempts = $DB->get_records_select('scorm_scoes_track', "element=? AND userid=? AND scormid=?", array($element, $userid, $scorm->id), 'attempt', 'DISTINCT attempt AS attemptnumber');
|
|
if ($attempts_only) {
|
|
return $attempts;
|
|
}
|
|
if (!empty($attempts)) {
|
|
$attemptcount = count($attempts);
|
|
}
|
|
return $attemptcount;
|
|
}
|
|
|
|
/**
|
|
* Figure out with this is a debug situation
|
|
*
|
|
* @param object $scorm a moodle scrom object - mdl_scorm
|
|
* @return boolean - debugging true/false
|
|
*/
|
|
function scorm_debugging($scorm) {
|
|
global $CFG, $USER;
|
|
$cfg_scorm = get_config('scorm');
|
|
|
|
if (!$cfg_scorm->allowapidebug) {
|
|
return false;
|
|
}
|
|
$identifier = $USER->username.':'.$scorm->name;
|
|
$test = $cfg_scorm->apidebugmask;
|
|
// check the regex is only a short list of safe characters
|
|
if (!preg_match('/^[\w\s\*\.\?\+\:\_\\\]+$/', $test)) {
|
|
return false;
|
|
}
|
|
$res = false;
|
|
eval('$res = preg_match(\'/^'.$test.'/\', $identifier) ? true : false;');
|
|
return $res;
|
|
}
|
|
|
|
/**
|
|
* Delete Scorm tracks for selected users
|
|
*
|
|
* @param array $attemptids list of attempts that need to be deleted
|
|
* @param int $scorm instance
|
|
*
|
|
* return bool true deleted all responses, false failed deleting an attempt - stopped here
|
|
*/
|
|
function scorm_delete_responses($attemptids, $scorm) {
|
|
if (!is_array($attemptids) || empty($attemptids)) {
|
|
return false;
|
|
}
|
|
|
|
foreach ($attemptids as $num => $attemptid) {
|
|
if (empty($attemptid)) {
|
|
unset($attemptids[$num]);
|
|
}
|
|
}
|
|
|
|
foreach ($attemptids as $attempt) {
|
|
$keys = explode(':', $attempt);
|
|
if (count($keys) == 2) {
|
|
$userid = clean_param($keys[0], PARAM_INT);
|
|
$attemptid = clean_param($keys[1], PARAM_INT);
|
|
if (!$userid || !$attemptid || !scorm_delete_attempt($userid, $scorm, $attemptid)) {
|
|
return false;
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Delete Scorm tracks for selected users
|
|
*
|
|
* @param int $userid ID of User
|
|
* @param int $scormid ID of Scorm
|
|
* @param int $attemptid user attempt that need to be deleted
|
|
*
|
|
* return bool true suceeded
|
|
*/
|
|
function scorm_delete_attempt($userid, $scorm, $attemptid) {
|
|
global $DB;
|
|
|
|
$DB->delete_records('scorm_scoes_track', array('userid' => $userid, 'scormid' => $scorm->id, 'attempt' => $attemptid));
|
|
include_once('lib.php');
|
|
scorm_update_grades($scorm, $userid, true);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Converts SCORM duration notation to human-readable format
|
|
* The function works with both SCORM 1.2 and SCORM 2004 time formats
|
|
* @param $duration string SCORM duration
|
|
* @return string human-readable date/time
|
|
*/
|
|
function scorm_format_duration($duration) {
|
|
// fetch date/time strings
|
|
$stryears = get_string('years');
|
|
$strmonths = get_string('nummonths');
|
|
$strdays = get_string('days');
|
|
$strhours = get_string('hours');
|
|
$strminutes = get_string('minutes');
|
|
$strseconds = get_string('seconds');
|
|
|
|
if ($duration[0] == 'P') {
|
|
// if timestamp starts with 'P' - it's a SCORM 2004 format
|
|
// this regexp discards empty sections, takes Month/Minute ambiguity into consideration,
|
|
// and outputs filled sections, discarding leading zeroes and any format literals
|
|
// also saves the only zero before seconds decimals (if there are any) and discards decimals if they are zero
|
|
$pattern = array( '#([A-Z])0+Y#', '#([A-Z])0+M#', '#([A-Z])0+D#', '#P(|\d+Y)0*(\d+)M#', '#0*(\d+)Y#', '#0*(\d+)D#', '#P#',
|
|
'#([A-Z])0+H#', '#([A-Z])[0.]+S#', '#\.0+S#', '#T(|\d+H)0*(\d+)M#', '#0*(\d+)H#', '#0+\.(\d+)S#', '#0*([\d.]+)S#', '#T#' );
|
|
$replace = array( '$1', '$1', '$1', '$1$2 '.$strmonths.' ', '$1 '.$stryears.' ', '$1 '.$strdays.' ', '',
|
|
'$1', '$1', 'S', '$1$2 '.$strminutes.' ', '$1 '.$strhours.' ', '0.$1 '.$strseconds, '$1 '.$strseconds, '');
|
|
} else {
|
|
// else we have SCORM 1.2 format there
|
|
// first convert the timestamp to some SCORM 2004-like format for conveniency
|
|
$duration = preg_replace('#^(\d+):(\d+):([\d.]+)$#', 'T$1H$2M$3S', $duration);
|
|
// then convert in the same way as SCORM 2004
|
|
$pattern = array( '#T0+H#', '#([A-Z])0+M#', '#([A-Z])[0.]+S#', '#\.0+S#', '#0*(\d+)H#', '#0*(\d+)M#', '#0+\.(\d+)S#', '#0*([\d.]+)S#', '#T#' );
|
|
$replace = array( 'T', '$1', '$1', 'S', '$1 '.$strhours.' ', '$1 '.$strminutes.' ', '0.$1 '.$strseconds, '$1 '.$strseconds, '' );
|
|
}
|
|
|
|
$result = preg_replace($pattern, $replace, $duration);
|
|
|
|
return $result;
|
|
}
|
|
|
|
function scorm_get_toc_object($user, $scorm, $currentorg='', $scoid='', $mode='normal', $attempt='', $play=false, $organizationsco=null) {
|
|
global $CFG, $DB, $PAGE, $OUTPUT;
|
|
|
|
$modestr = '';
|
|
if ($mode != 'normal') {
|
|
$modestr = '&mode='.$mode;
|
|
}
|
|
|
|
$result = array();
|
|
$incomplete = false;
|
|
|
|
if (!empty($organizationsco)) {
|
|
$result[0] = $organizationsco;
|
|
$result[0]->isvisible = true;
|
|
$result[0]->statusicon = '';
|
|
$result[0]->url = '';
|
|
}
|
|
|
|
if ($scoes = scorm_get_scoes($scorm->id, $currentorg)){
|
|
// Retrieve user tracking data for each learning object.
|
|
$usertracks = array();
|
|
foreach ($scoes as $sco) {
|
|
if (!empty($sco->launch)) {
|
|
if ($usertrack = scorm_get_tracks($sco->id, $user->id, $attempt)) {
|
|
if ($usertrack->status == '') {
|
|
$usertrack->status = 'notattempted';
|
|
}
|
|
$usertracks[$sco->identifier] = $usertrack;
|
|
}
|
|
}
|
|
}
|
|
foreach ($scoes as $sco) {
|
|
if (!isset($sco->isvisible)) {
|
|
$sco->isvisible = true;
|
|
}
|
|
|
|
if (empty($sco->title)) {
|
|
$sco->title = $sco->identifier;
|
|
}
|
|
|
|
if (scorm_version_check($scorm->version, SCORM_13)) {
|
|
$sco->prereq = true;
|
|
} else {
|
|
$sco->prereq = empty($sco->prerequisites) || scorm_eval_prerequisites($sco->prerequisites, $usertracks);
|
|
}
|
|
|
|
if ($sco->isvisible) {
|
|
if (!empty($sco->launch)) {
|
|
if (empty($scoid) && ($mode != 'normal')) {
|
|
$scoid = $sco->id;
|
|
}
|
|
|
|
if (isset($usertracks[$sco->identifier])) {
|
|
$usertrack = $usertracks[$sco->identifier];
|
|
$strstatus = get_string($usertrack->status,'scorm');
|
|
|
|
if ($sco->scormtype == 'sco') {
|
|
$statusicon = '<img src="'.$OUTPUT->pix_url($usertrack->status, 'scorm').'" alt="'.$strstatus.'" title="'.$strstatus.'" />';
|
|
} else {
|
|
$statusicon = '<img src="'.$OUTPUT->pix_url('asset', 'scorm').'" alt="'.get_string('assetlaunched', 'scorm').'" title="'.get_string('assetlaunched', 'scorm').'" />';
|
|
}
|
|
|
|
if (($usertrack->status == 'notattempted') || ($usertrack->status == 'incomplete') || ($usertrack->status == 'browsed')) {
|
|
$incomplete = true;
|
|
if ($play && empty($scoid)) {
|
|
$scoid = $sco->id;
|
|
}
|
|
}
|
|
|
|
$strsuspended = get_string('suspended', 'scorm');
|
|
|
|
$exitvar = 'cmi.core.exit';
|
|
|
|
if (scorm_version_check($scorm->version, SCORM_13)) {
|
|
$exitvar = 'cmi.exit';
|
|
}
|
|
|
|
if ($incomplete && isset($usertrack->{$exitvar}) && ($usertrack->{$exitvar} == 'suspend')) {
|
|
$statusicon = '<img src="'.$OUTPUT->pix_url('suspend', 'scorm').'" alt="'.$strstatus.' - '.$strsuspended.'" title="'.$strstatus.' - '.$strsuspended.'" />';
|
|
}
|
|
|
|
} else {
|
|
if ($play && empty($scoid)) {
|
|
$scoid = $sco->id;
|
|
}
|
|
|
|
$incomplete = true;
|
|
|
|
if ($sco->scormtype == 'sco') {
|
|
$statusicon = '<img src="'.$OUTPUT->pix_url('notattempted', 'scorm').'" alt="'.get_string('notattempted', 'scorm').'" title="'.get_string('notattempted', 'scorm').'" />';
|
|
} else {
|
|
$statusicon = '<img src="'.$OUTPUT->pix_url('asset', 'scorm').'" alt="'.get_string('asset', 'scorm').'" title="'.get_string('asset', 'scorm').'" />';
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (empty($statusicon)) {
|
|
$sco->statusicon = '<img src="'.$OUTPUT->pix_url('notattempted', 'scorm').'" alt="'.get_string('notattempted', 'scorm').'" title="'.get_string('notattempted', 'scorm').'" />';
|
|
} else {
|
|
$sco->statusicon = $statusicon;
|
|
}
|
|
|
|
$sco->url = 'a='.$scorm->id.'&scoid='.$sco->id.'¤torg='.$currentorg.$modestr.'&attempt='.$attempt;
|
|
$sco->incomplete = $incomplete;
|
|
|
|
if (!in_array($sco->id, array_keys($result))) {
|
|
$result[$sco->id] = $sco;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Get the parent scoes!
|
|
$result = scorm_get_toc_get_parent_child($result);
|
|
|
|
// Be safe, prevent warnings from showing up while returning array
|
|
if (!isset($scoid)) {
|
|
$scoid = '';
|
|
}
|
|
|
|
return array('scoes' => $result, 'usertracks' => $usertracks, 'scoid' => $scoid);
|
|
}
|
|
|
|
function scorm_get_toc_get_parent_child(&$result) {
|
|
$final = array();
|
|
$level = 0;
|
|
$prevparent = '/';
|
|
|
|
foreach ($result as $sco) {
|
|
if ($sco->parent == '/') {
|
|
$final[$level][$sco->identifier] = $sco;
|
|
$prevparent = $sco->identifier;
|
|
unset($result[$sco->id]);
|
|
} else {
|
|
if ($sco->parent == $prevparent) {
|
|
$final[$level][$sco->identifier] = $sco;
|
|
$prevparent = $sco->identifier;
|
|
unset($result[$sco->id]);
|
|
} else {
|
|
if (!empty($final[$level])) {
|
|
$found = false;
|
|
foreach ($final[$level] as $fin) {
|
|
if ($sco->parent == $fin->identifier) {
|
|
$found = true;
|
|
}
|
|
}
|
|
|
|
if ($found) {
|
|
$final[$level][$sco->identifier] = $sco;
|
|
unset($result[$sco->id]);
|
|
$found = false;
|
|
} else {
|
|
$level++;
|
|
$final[$level][$sco->identifier] = $sco;
|
|
unset($result[$sco->id]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
for ($i = 0; $i <= $level; $i++) {
|
|
$prevparent = '';
|
|
foreach ($final[$i] as $ident => $sco) {
|
|
if (empty($prevparent)) {
|
|
$prevparent = $ident;
|
|
}
|
|
if (!isset($final[$i][$prevparent]->children)) {
|
|
$final[$i][$prevparent]->children = array();
|
|
}
|
|
if ($sco->parent == $prevparent) {
|
|
$final[$i][$prevparent]->children[] = $sco;
|
|
$prevparent = $ident;
|
|
} else {
|
|
$parent = false;
|
|
foreach ($final[$i] as $identifier => $scoobj) {
|
|
if ($identifier == $sco->parent) {
|
|
$parent = $identifier;
|
|
}
|
|
}
|
|
|
|
if ($parent !== false) {
|
|
$final[$i][$parent]->children[] = $sco;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$results = array();
|
|
for ($i = 0; $i <= $level; $i++) {
|
|
$keys = array_keys($final[$i]);
|
|
$results[] = $final[$i][$keys[0]];
|
|
}
|
|
|
|
return $results;
|
|
}
|
|
|
|
function scorm_format_toc_for_treeview($user, $scorm, $scoes, $usertracks, $cmid, $toclink=TOCJSLINK, $currentorg='', $attempt='', $play=false, $organizationsco=null, $children=false) {
|
|
global $CFG;
|
|
|
|
$result = new stdClass();
|
|
$result->prerequisites = true;
|
|
$result->incomplete = true;
|
|
$result->toc = '';
|
|
|
|
if (!$children) {
|
|
$attemptsmade = scorm_get_attempt_count($user->id, $scorm);
|
|
$result->attemptleft = $scorm->maxattempt == 0 ? 1 : $scorm->maxattempt - $attemptsmade;
|
|
}
|
|
|
|
if (!$children) {
|
|
$result->toc = "<ul>\n";
|
|
|
|
if (!$play && !empty($organizationsco)) {
|
|
$result->toc .= "\t<li>".$organizationsco->title."</li>\n";
|
|
}
|
|
}
|
|
|
|
$prevsco = '';
|
|
if (!empty($scoes)) {
|
|
foreach ($scoes as $sco) {
|
|
$result->toc .= "\t<li>\n";
|
|
$scoid = $sco->id;
|
|
|
|
$sco->isvisible = true;
|
|
|
|
if ($sco->isvisible) {
|
|
$score = '';
|
|
|
|
if (isset($usertracks[$sco->identifier])) {
|
|
$viewscore = has_capability('mod/scorm:viewscores', context_module::instance($cmid));
|
|
if (isset($usertracks[$sco->identifier]->score_raw) && $viewscore) {
|
|
if ($usertracks[$sco->identifier]->score_raw != '') {
|
|
$score = '('.get_string('score','scorm').': '.$usertracks[$sco->identifier]->score_raw.')';
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!empty($sco->prereq)) {
|
|
if ($sco->id == $scoid) {
|
|
$result->prerequisites = true;
|
|
}
|
|
|
|
if (!empty($prevsco) && scorm_version_check($scorm->version, SCORM_13) && !empty($prevsco->hidecontinue)) {
|
|
if ($sco->scormtype == 'sco') {
|
|
$result->toc .= '<span>'.$sco->statusicon.' '.format_string($sco->title).'</span>';
|
|
} else {
|
|
$result->toc .= '<span> '.format_string($sco->title).'</span>';
|
|
}
|
|
} else if ($toclink == TOCFULLURL) {
|
|
$url = $CFG->wwwroot.'/mod/scorm/player.php?'.$sco->url;
|
|
if (!empty($sco->launch)) {
|
|
if ($sco->scormtype == 'sco') {
|
|
$result->toc .= $sco->statusicon.' <a href="'.$url.'">'.format_string($sco->title).'</a>'.$score."\n";
|
|
} else {
|
|
$result->toc .= ' <a href="'.$url.'">'.format_string($sco->title).'</a>'.$score."\n";
|
|
}
|
|
} else {
|
|
if ($sco->scormtype == 'sco') {
|
|
$result->toc .= $sco->statusicon.' '.format_string($sco->title).$score."\n";
|
|
} else {
|
|
$result->toc .= ' '.format_string($sco->title).$score."\n";
|
|
}
|
|
}
|
|
} else {
|
|
if (!empty($sco->launch)) {
|
|
if ($sco->scormtype == 'sco') {
|
|
$result->toc .= '<a title="'.$sco->url.'">'.$sco->statusicon.' '.format_string($sco->title).' '.$score.'</a>';
|
|
} else {
|
|
$result->toc .= '<a title="'.$sco->url.'"> '.format_string($sco->title).' '.$score.'</a>';
|
|
}
|
|
} else {
|
|
if ($sco->scormtype == 'sco') {
|
|
$result->toc .= '<span>'.$sco->statusicon.' '.format_string($sco->title).'</span>';
|
|
} else {
|
|
$result->toc .= '<span> '.format_string($sco->title).'</span>';
|
|
}
|
|
}
|
|
}
|
|
|
|
} else {
|
|
if ($play) {
|
|
if ($sco->scormtype == 'sco') {
|
|
$result->toc .= '<span>'.$sco->statusicon.' '.format_string($sco->title).'</span>';
|
|
} else {
|
|
$result->toc .= ' '.format_string($sco->title).'</span>';
|
|
}
|
|
} else {
|
|
if ($sco->scormtype == 'sco') {
|
|
$result->toc .= $sco->statusicon.' '.format_string($sco->title)."\n";
|
|
} else {
|
|
$result->toc .= ' '.format_string($sco->title)."\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
} else {
|
|
$result->toc .= "\t\t ".format_string($sco->title)."\n";
|
|
}
|
|
|
|
if (!empty($sco->children)) {
|
|
$result->toc .= "\n\t\t<ul>\n";
|
|
$childresult = scorm_format_toc_for_treeview($user, $scorm, $sco->children, $usertracks, $cmid, $toclink, $currentorg, $attempt, $play, $organizationsco, true);
|
|
$result->toc .= $childresult->toc;
|
|
$result->toc .= "\t\t</ul>\n";
|
|
$result->toc .= "\t</li>\n";
|
|
} else {
|
|
$result->toc .= "\t</li>\n";
|
|
}
|
|
$prevsco = $sco;
|
|
}
|
|
$result->incomplete = $sco->incomplete;
|
|
}
|
|
|
|
if (!$children) {
|
|
$result->toc .= "</ul>\n";
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
function scorm_format_toc_for_droplist($scorm, $scoes, $usertracks, $currentorg='', $organizationsco=null, $children=false, $level=0, $tocmenus=array()) {
|
|
if (!empty($scoes)) {
|
|
if (!empty($organizationsco) && !$children) {
|
|
$tocmenus[$organizationsco->id] = $organizationsco->title;
|
|
}
|
|
|
|
$parents[$level]='/';
|
|
foreach ($scoes as $sco) {
|
|
if ($parents[$level] != $sco->parent) {
|
|
if ($newlevel = array_search($sco->parent, $parents)) {
|
|
$level = $newlevel;
|
|
} else {
|
|
$i = $level;
|
|
while (($i > 0) && ($parents[$level] != $sco->parent)) {
|
|
$i--;
|
|
}
|
|
|
|
if (($i == 0) && ($sco->parent != $currentorg)) {
|
|
$level++;
|
|
} else {
|
|
$level = $i;
|
|
}
|
|
|
|
$parents[$level] = $sco->parent;
|
|
}
|
|
}
|
|
|
|
if ($sco->prereq) {
|
|
if ($sco->scormtype == 'sco') {
|
|
$tocmenus[$sco->id] = scorm_repeater('−', $level) . '>' . format_string($sco->title);
|
|
}
|
|
} else {
|
|
if ($sco->scormtype == 'sco') {
|
|
$tocmenus[$sco->id] = scorm_repeater('−', $level) . '>' . format_string($sco->title);
|
|
}
|
|
}
|
|
|
|
if (!empty($sco->children)) {
|
|
$tocmenus = scorm_format_toc_for_droplist($scorm, $sco->children, $usertracks, $currentorg, $organizationsco, true, $level, $tocmenus);
|
|
}
|
|
}
|
|
}
|
|
|
|
return $tocmenus;
|
|
}
|
|
|
|
function scorm_get_toc($user, $scorm, $cmid, $toclink=TOCJSLINK, $currentorg='', $scoid='', $mode='normal', $attempt='', $play=false, $tocheader=false) {
|
|
global $CFG, $DB, $OUTPUT;
|
|
|
|
if (empty($attempt)) {
|
|
$attempt = scorm_get_attempt_count($user->id, $scorm);
|
|
}
|
|
|
|
$result = new stdClass();
|
|
$organizationsco = null;
|
|
|
|
if ($tocheader) {
|
|
$result->toc = "<div id=\"scorm_layout\">\n";
|
|
$result->toc .= "<div id=\"scorm_toc\">\n";
|
|
$result->toc .= "<div id=\"scorm_tree\">\n";
|
|
}
|
|
|
|
if (!empty($currentorg)) {
|
|
$organizationsco = $DB->get_record('scorm_scoes', array('scorm'=>$scorm->id, 'identifier'=>$currentorg));
|
|
if (!empty($organizationsco->title)) {
|
|
if ($play) {
|
|
$result->toctitle = $organizationsco->title;
|
|
}
|
|
}
|
|
}
|
|
|
|
$scoes = scorm_get_toc_object($user, $scorm, $currentorg, $scoid, $mode, $attempt, $play, $organizationsco);
|
|
|
|
$treeview = scorm_format_toc_for_treeview($user, $scorm, $scoes['scoes'][0]->children, $scoes['usertracks'], $cmid, $toclink, $currentorg, $attempt, $play, $organizationsco, false);
|
|
|
|
if ($tocheader) {
|
|
$result->toc .= $treeview->toc;
|
|
} else {
|
|
$result->toc = $treeview->toc;
|
|
}
|
|
|
|
if (!empty($scoes['scoid'])) {
|
|
$scoid = $scoes['scoid'];
|
|
}
|
|
|
|
if (empty($scoid)) {
|
|
$result->sco = $scoes['scoes'][0]->children[0];
|
|
} else {
|
|
$result->sco = scorm_get_sco($scoid);
|
|
}
|
|
|
|
if ($scorm->hidetoc == SCORM_TOC_POPUP) {
|
|
$tocmenu = scorm_format_toc_for_droplist($scorm, $scoes['scoes'][0]->children, $scoes['usertracks'], $currentorg, $organizationsco);
|
|
|
|
$modestr = '';
|
|
if ($mode != 'normal') {
|
|
$modestr = '&mode='.$mode;
|
|
}
|
|
|
|
$url = new moodle_url('/mod/scorm/player.php?a='.$scorm->id.'¤torg='.$currentorg.$modestr);
|
|
$result->tocmenu = $OUTPUT->single_select($url, 'scoid', $tocmenu, $result->sco->id, null, "tocmenu");
|
|
}
|
|
|
|
$result->prerequisites = $treeview->prerequisites;
|
|
$result->incomplete = $treeview->incomplete;
|
|
$result->attemptleft = $treeview->attemptleft;
|
|
|
|
if ($tocheader) {
|
|
$result->toc .= "</div></div></div>\n";
|
|
$result->toc .= "<div id=\"scorm_navpanel\"></div>\n";
|
|
}
|
|
|
|
return $result;
|
|
}
|
|
|
|
function scorm_get_adlnav_json ($scoes, &$adlnav = array(), $parentscoid = null) {
|
|
if (is_object($scoes)) {
|
|
$sco = $scoes;
|
|
if (isset($sco->url)) {
|
|
$adlnav[$sco->id]['identifier'] = $sco->identifier;
|
|
$adlnav[$sco->id]['launch'] = $sco->launch;
|
|
$adlnav[$sco->id]['title'] = $sco->title;
|
|
$adlnav[$sco->id]['url'] = $sco->url;
|
|
$adlnav[$sco->id]['parent'] = $sco->parent;
|
|
if (isset($sco->choice)) {
|
|
$adlnav[$sco->id]['choice'] = $sco->choice;
|
|
}
|
|
if (isset($sco->flow)) {
|
|
$adlnav[$sco->id]['flow'] = $sco->flow;
|
|
} else if (isset($parentscoid) && isset($adlnav[$parentscoid]['flow'])) {
|
|
$adlnav[$sco->id]['flow'] = $adlnav[$parentscoid]['flow'];
|
|
}
|
|
if (isset($sco->isvisible)) {
|
|
$adlnav[$sco->id]['isvisible'] = $sco->isvisible;
|
|
}
|
|
if (isset($sco->parameters)) {
|
|
$adlnav[$sco->id]['parameters'] = $sco->parameters;
|
|
}
|
|
if (isset($sco->hidecontinue)) {
|
|
$adlnav[$sco->id]['hidecontinue'] = $sco->hidecontinue;
|
|
}
|
|
if (isset($sco->hideprevious)) {
|
|
$adlnav[$sco->id]['hideprevious'] = $sco->hideprevious;
|
|
}
|
|
if (isset($sco->hidesuspendall)) {
|
|
$adlnav[$sco->id]['hidesuspendall'] = $sco->hidesuspendall;
|
|
}
|
|
if (!empty($parentscoid)) {
|
|
$adlnav[$sco->id]['parentscoid'] = $parentscoid;
|
|
}
|
|
if (isset($adlnav['prevscoid'])) {
|
|
$adlnav[$sco->id]['prevscoid'] = $adlnav['prevscoid'];
|
|
$adlnav[$adlnav['prevscoid']]['nextscoid'] = $sco->id;
|
|
if (isset($adlnav['prevparent']) && $adlnav['prevparent'] == $sco->parent) {
|
|
$adlnav[$sco->id]['prevsibling'] = $adlnav['prevscoid'];
|
|
$adlnav[$adlnav['prevscoid']]['nextsibling'] = $sco->id;
|
|
}
|
|
}
|
|
$adlnav['prevscoid'] = $sco->id;
|
|
$adlnav['prevparent'] = $sco->parent;
|
|
}
|
|
if (isset($sco->children)) {
|
|
foreach ($sco->children as $children) {
|
|
scorm_get_adlnav_json($children, $adlnav, $sco->id);
|
|
}
|
|
}
|
|
} else {
|
|
foreach ($scoes as $sco) {
|
|
scorm_get_adlnav_json ($sco, $adlnav);
|
|
}
|
|
unset($adlnav['prevscoid']);
|
|
unset($adlnav['prevparent']);
|
|
}
|
|
return json_encode($adlnav);
|
|
}
|
|
|
|
/**
|
|
* Check for the availability of a resource by URL.
|
|
*
|
|
* Check is performed using an HTTP HEAD call.
|
|
*
|
|
* @param $url string A valid URL
|
|
* @return bool|string True if no issue is found. The error string message, otherwise
|
|
*/
|
|
function scorm_check_url($url) {
|
|
$curl = new curl;
|
|
|
|
if (!ini_get('open_basedir') and !ini_get('safe_mode')) {
|
|
// Same options as in {@link download_file_content()}, used in {@link scorm_parse_scorm()}.
|
|
$curl->setopt(array('CURLOPT_FOLLOWLOCATION' => true, 'CURLOPT_MAXREDIRS' => 5));
|
|
}
|
|
$cmsg = $curl->head($url);
|
|
$info = $curl->get_info();
|
|
if (empty($info['http_code']) || $info['http_code'] != 200) {
|
|
return get_string('invalidurlhttpcheck', 'scorm', array('cmsg' => $cmsg));
|
|
}
|
|
|
|
return true;
|
|
}
|