mod/scorm/player.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 // This page prints a particular instance of aicc/scorm package.
  18
  19 require_once('../../config.php');
  20 require_once($CFG->dirroot.'/mod/scorm/locallib.php');
  21 require_once($CFG->libdir . '/completionlib.php');
  22
  23 $id = optional_param('cm', '', PARAM_INT);                          // Course Module ID, or
  24 $a = optional_param('a', '', PARAM_INT);                            // scorm ID
  25 $scoid = required_param('scoid', PARAM_INT);                        // sco ID
  26 $mode = optional_param('mode', 'normal', PARAM_ALPHA);              // navigation mode
  27 $currentorg = optional_param('currentorg', '', PARAM_RAW);          // selected organization
  28 $newattempt = optional_param('newattempt', 'off', PARAM_ALPHA);     // the user request to start a new attempt.
  29 $displaymode = optional_param('display', '', PARAM_ALPHA);
  30
  31 if (!empty($id)) {
  32     if (! $cm = get_coursemodule_from_id('scorm', $id, 0, true)) {
  33         print_error('invalidcoursemodule');
  34     }
  35     if (! $course = $DB->get_record("course", array("id" => $cm->course))) {
  36         print_error('coursemisconf');
  37     }
  38     if (! $scorm = $DB->get_record("scorm", array("id" => $cm->instance))) {
  39         print_error('invalidcoursemodule');
  40     }
  41 } else if (!empty($a)) {
  42     if (! $scorm = $DB->get_record("scorm", array("id" => $a))) {
  43         print_error('invalidcoursemodule');
  44     }
  45     if (! $course = $DB->get_record("course", array("id" => $scorm->course))) {
  46         print_error('coursemisconf');
  47     }
  48     if (! $cm = get_coursemodule_from_instance("scorm", $scorm->id, $course->id, true)) {
  49         print_error('invalidcoursemodule');
  50     }
  51 } else {
  52     print_error('missingparameter');
  53 }
  54
  55 // PARAM_RAW is used for $currentorg, validate it against records stored in the table.
  56 if (!empty($currentorg)) {
  57     if (!$DB->record_exists('scorm_scoes', array('scorm' => $scorm->id, 'identifier' => $currentorg))) {
  58         $currentorg = '';
  59     }
  60 }
  61
  62 // If new attempt is being triggered set normal mode and increment attempt number.
  63 $attempt = scorm_get_last_attempt($scorm->id, $USER->id);
  64
  65 // Check mode is correct and set/validate mode/attempt/newattempt (uses pass by reference).
  66 scorm_check_mode($scorm, $newattempt, $attempt, $USER->id, $mode);
  67
  68 if (!empty($scoid)) {
  69     $scoid = scorm_check_launchable_sco($scorm, $scoid);
  70 }
  71
  72 $url = new moodle_url('/mod/scorm/player.php', array('scoid' => $scoid, 'cm' => $cm->id));
  73 if ($mode !== 'normal') {
  74     $url->param('mode', $mode);
  75 }
  76 if ($currentorg !== '') {
  77     $url->param('currentorg', $currentorg);
  78 }
  79 if ($newattempt !== 'off') {
  80     $url->param('newattempt', $newattempt);
  81 }
  82 if ($displaymode !== '') {
  83     $url->param('display', $displaymode);
  84 }
  85 $PAGE->set_url($url);
  86 $forcejs = get_config('scorm', 'forcejavascript');
  87 if (!empty($forcejs)) {
  88     $PAGE->add_body_class('forcejavascript');
  89 }
  90 $collapsetocwinsize = get_config('scorm', 'collapsetocwinsize');
  91 if (empty($collapsetocwinsize)) {
  92     // Set as default window size to collapse TOC.
  93     $collapsetocwinsize = 767;
  94 } else {
  95     $collapsetocwinsize = intval($collapsetocwinsize);
  96 }
  97
  98 require_login($course, false, $cm);
  99
 100 $strscorms = get_string('modulenameplural', 'scorm');
 101 $strscorm  = get_string('modulename', 'scorm');
 102 $strpopup = get_string('popup', 'scorm');
 103 $strexit = get_string('exitactivity', 'scorm');
 104
 105 $coursecontext = context_course::instance($course->id);
 106
 107 if ($displaymode == 'popup') {
 108     $PAGE->set_pagelayout('embedded');
 109 } else {
 110     $shortname = format_string($course->shortname, true, array('context' => $coursecontext));
 111     $pagetitle = strip_tags("$shortname: ".format_string($scorm->name));
 112     $PAGE->set_title($pagetitle);
 113     $PAGE->set_heading($course->fullname);
 114 }
 115 if (!$cm->visible and !has_capability('moodle/course:viewhiddenactivities', context_module::instance($cm->id))) {
 116     echo $OUTPUT->header();
 117     notice(get_string("activityiscurrentlyhidden"));
 118     echo $OUTPUT->footer();
 119     die;
 120 }
 121
 122 // Check if SCORM available.
 123 list($available, $warnings) = scorm_get_availability_status($scorm);
 124 if (!$available) {
 125     $reason = current(array_keys($warnings));
 126     echo $OUTPUT->header();
 127     echo $OUTPUT->box(get_string($reason, "scorm", $warnings[$reason]), "generalbox boxaligncenter");
 128     echo $OUTPUT->footer();
 129     die;
 130 }
 131
 132 // TOC processing
 133 $scorm->version = strtolower(clean_param($scorm->version, PARAM_SAFEDIR));   // Just to be safe.
 134 if (!file_exists($CFG->dirroot.'/mod/scorm/datamodels/'.$scorm->version.'lib.php')) {
 135     $scorm->version = 'scorm_12';
 136 }
 137 require_once($CFG->dirroot.'/mod/scorm/datamodels/'.$scorm->version.'lib.php');
 138
 139 $result = scorm_get_toc($USER, $scorm, $cm->id, TOCJSLINK, $currentorg, $scoid, $mode, $attempt, true, true);
 140 $sco = $result->sco;
 141 if ($scorm->lastattemptlock == 1 && $result->attemptleft == 0) {
 142     echo $OUTPUT->header();
 143     echo $OUTPUT->notification(get_string('exceededmaxattempts', 'scorm'));
 144     echo $OUTPUT->footer();
 145     exit;
 146 }
 147
 148 $scoidstr = '&amp;scoid='.$sco->id;
 149 $modestr = '&amp;mode='.$mode;
 150
 151 $SESSION->scorm = new stdClass();
 152 $SESSION->scorm->scoid = $sco->id;
 153 $SESSION->scorm->scormstatus = 'Not Initialized';
 154 $SESSION->scorm->scormmode = $mode;
 155 $SESSION->scorm->attempt = $attempt;
 156
 157 // Mark module viewed.
 158 $completion = new completion_info($course);
 159 $completion->set_module_viewed($cm);
 160
 161 // Print the page header.
 162 if (empty($scorm->popup) || $displaymode == 'popup') {
 163     if ($course->format == 'singleactivity' && $scorm->skipview == SCORM_SKIPVIEW_ALWAYS
 164         && !has_capability('mod/scorm:viewreport', context_module::instance($cm->id))) {
 165         // Redirect students back to site home to avoid redirect loop.
 166         $exiturl = $CFG->wwwroot;
 167     } else {
 168         // Redirect back to the correct section if one section per page is being used.
 169         $exiturl = course_get_url($course, $cm->sectionnum);
 170     }
 171
 172     $exitlink = html_writer::link($exiturl, $strexit, array('title' => $strexit, 'class' => 'btn btn-default'));
 173     $PAGE->set_button($exitlink);
 174 }
 175
 176 $PAGE->requires->data_for_js('scormplayerdata', Array('launch' => false,
 177                                                        'currentorg' => '',
 178                                                        'sco' => 0,
 179                                                        'scorm' => 0,
 180                                                        'courseid' => $scorm->course,
 181                                                        'cwidth' => $scorm->width,
 182                                                        'cheight' => $scorm->height,
 183                                                        'popupoptions' => $scorm->options), true);
 184 $PAGE->requires->js('/mod/scorm/request.js', true);
 185 $PAGE->requires->js('/lib/cookies.js', true);
 186
 187 if (file_exists($CFG->dirroot.'/mod/scorm/datamodels/'.$scorm->version.'.js')) {
 188     $PAGE->requires->js('/mod/scorm/datamodels/'.$scorm->version.'.js', true);
 189 } else {
 190     $PAGE->requires->js('/mod/scorm/datamodels/scorm_12.js', true);
 191 }
 192
 193 echo $OUTPUT->header();
 194 if (!empty($scorm->displayactivityname)) {
 195     echo $OUTPUT->heading(format_string($scorm->name));
 196 }
 197
 198 $PAGE->requires->string_for_js('navigation', 'scorm');
 199 $PAGE->requires->string_for_js('toc', 'scorm');
 200 $PAGE->requires->string_for_js('hide', 'moodle');
 201 $PAGE->requires->string_for_js('show', 'moodle');
 202 $PAGE->requires->string_for_js('popupsblocked', 'scorm');
 203
 204 $name = false;
 205
 206 echo html_writer::start_div('', array('id' => 'scormpage'));
 207 echo html_writer::start_div('', array('id' => 'tocbox'));
 208 echo html_writer::div(html_writer::tag('script', '', array('id' => 'external-scormapi', 'type' => 'text/JavaScript')), '',
 209                         array('id' => 'scormapi-parent'));
 210
 211 if ($scorm->hidetoc == SCORM_TOC_POPUP or $mode == 'browse' or $mode == 'review') {
 212     echo html_writer::start_div('', array('id' => 'scormtop'));
 213     echo $mode == 'browse' ? html_writer::div(get_string('browsemode', 'scorm'), 'scorm-left', array('id' => 'scormmode')) : '';
 214     echo $mode == 'review' ? html_writer::div(get_string('reviewmode', 'scorm'), 'scorm-left', array('id' => 'scormmode')) : '';
 215     if ($scorm->hidetoc == SCORM_TOC_POPUP) {
 216         echo html_writer::div($result->tocmenu, 'scorm-right', array('id' => 'scormnav'));
 217     }
 218     echo html_writer::end_div();
 219 }
 220
 221 echo html_writer::start_div('', array('id' => 'toctree'));
 222
 223 if (empty($scorm->popup) || $displaymode == 'popup') {
 224     echo $result->toc;
 225 } else {
 226     // Added incase javascript popups are blocked we don't provide a direct link
 227     // to the pop-up as JS communication can fail - the user must disable their pop-up blocker.
 228     $linkcourse = html_writer::link($CFG->wwwroot.'/course/view.php?id='.
 229                     $scorm->course, get_string('finishscormlinkname', 'scorm'));
 230     echo $OUTPUT->box(get_string('finishscorm', 'scorm', $linkcourse), 'generalbox', 'altfinishlink');
 231 }
 232 echo html_writer::end_div(); // Toc tree ends.
 233 echo html_writer::end_div(); // Toc box ends.
 234 echo html_writer::tag('noscript', html_writer::div(get_string('noscriptnoscorm', 'scorm'), '', array('id' => 'noscript')));
 235
 236 if ($result->prerequisites) {
 237     if ($scorm->popup != 0 && $displaymode !== 'popup') {
 238         // Clean the name for the window as IE is fussy.
 239         $name = preg_replace("/[^A-Za-z0-9]/", "", $scorm->name);
 240         if (!$name) {
 241             $name = 'DefaultPlayerWindow';
 242         }
 243         $name = 'scorm_'.$name;
 244         echo html_writer::script('', $CFG->wwwroot.'/mod/scorm/player.js');
 245         $url = new moodle_url($PAGE->url, array('scoid' => $sco->id, 'display' => 'popup', 'mode' => $mode));
 246         echo html_writer::script(
 247             js_writer::function_call('scorm_openpopup', Array($url->out(false),
 248                                                        $name, $scorm->options,
 249                                                        $scorm->width, $scorm->height)));
 250         echo html_writer::tag('noscript', html_writer::tag('iframe', '', array('id' => 'main',
 251                                 'class' => 'scoframe', 'name' => 'main', 'src' => 'loadSCO.php?id='.$cm->id.$scoidstr.$modestr)));
 252     }
 253 } else {
 254     echo $OUTPUT->box(get_string('noprerequisites', 'scorm'));
 255 }
 256 echo html_writer::end_div(); // Scorm page ends.
 257
 258 $scoes = scorm_get_toc_object($USER, $scorm, $currentorg, $sco->id, $mode, $attempt);
 259 $adlnav = scorm_get_adlnav_json($scoes['scoes']);
 260
 261 if (empty($scorm->popup) || $displaymode == 'popup') {
 262     if (!isset($result->toctitle)) {
 263         $result->toctitle = get_string('toc', 'scorm');
 264     }
 265     $jsmodule = array(
 266         'name' => 'mod_scorm',
 267         'fullpath' => '/mod/scorm/module.js',
 268         'requires' => array('json'),
 269     );
 270     $scorm->nav = intval($scorm->nav);
 271     $PAGE->requires->js_init_call('M.mod_scorm.init', array($scorm->nav, $scorm->navpositionleft, $scorm->navpositiontop,
 272                             $scorm->hidetoc, $collapsetocwinsize, $result->toctitle, $name, $sco->id, $adlnav), false, $jsmodule);
 273 }
 274 if (!empty($forcejs)) {
 275     $message = $OUTPUT->box(get_string("forcejavascriptmessage", "scorm"), "generalbox boxaligncenter forcejavascriptmessage");
 276     echo html_writer::tag('noscript', $message);
 277 }
 278
 279 if (file_exists($CFG->dirroot.'/mod/scorm/datamodels/'.$scorm->version.'.php')) {
 280     include_once($CFG->dirroot.'/mod/scorm/datamodels/'.$scorm->version.'.php');
 281 } else {
 282     include_once($CFG->dirroot.'/mod/scorm/datamodels/scorm_12.php');
 283 }
 284
 285 // Add the checknet system to keep checking for a connection.
 286 $PAGE->requires->string_for_js('networkdropped', 'mod_scorm');
 287 // Build arguments to send to checknet JS.
 288 $args = array(
 289     'message' => array('networkdropped', 'mod_scorm'),
 290     'frequency' => 30000, // Frequency of network check.
 291     'timeout' => 10000, // Timeout of network check.
 292     'maxalerts' => 1 // Max number of alerts to be thrown.
 293 );
 294 $PAGE->requires->yui_module('moodle-core-checknet', 'M.core.checknet.init', array($args));
 295 echo $OUTPUT->footer();
 296
 297 // Set the start time of this SCO.
 298 scorm_insert_track($USER->id, $scorm->id, $scoid, $attempt, 'x.start.time', time());