mod/scorm/report/objectives/classes/report.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  * Core Report class of objectives SCORM report plugin
  18  * @package   scormreport_objectives
  19  * @author    Dan Marsden <dan@danmarsden.com>
  20  * @copyright 2013 Dan Marsden
  21  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  22  */
  23
  24 namespace scormreport_objectives;
  25
  26 defined('MOODLE_INTERNAL') || die();
  27
  28 require_once($CFG->dirroot.'/mod/scorm/report/objectives/responsessettings_form.php');
  29
  30 /**
  31  * Objectives report class
  32  *
  33  * @copyright  2013 Dan Marsden
  34  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  35  */
  36 class report extends \mod_scorm\report {
  37     /**
  38      * displays the full report
  39      * @param \stdClass $scorm full SCORM object
  40      * @param \stdClass $cm - full course_module object
  41      * @param \stdClass $course - full course object
  42      * @param string $download - type of download being requested
  43      */
  44     public function display($scorm, $cm, $course, $download) {
  45         global $CFG, $DB, $OUTPUT, $PAGE;
  46
  47         $contextmodule = \context_module::instance($cm->id);
  48         $action = optional_param('action', '', PARAM_ALPHA);
  49         $attemptids = optional_param_array('attemptid', array(), PARAM_RAW);
  50         $attemptsmode = optional_param('attemptsmode', SCORM_REPORT_ATTEMPTS_ALL_STUDENTS, PARAM_INT);
  51         $PAGE->set_url(new \moodle_url($PAGE->url, array('attemptsmode' => $attemptsmode)));
  52
  53         if ($action == 'delete' && has_capability('mod/scorm:deleteresponses', $contextmodule) && confirm_sesskey()) {
  54             if (scorm_delete_responses($attemptids, $scorm)) { // Delete responses.
  55                 echo $OUTPUT->notification(get_string('scormresponsedeleted', 'scorm'), 'notifysuccess');
  56             }
  57         }
  58         // Find out current groups mode.
  59         $currentgroup = groups_get_activity_group($cm, true);
  60
  61         // Detailed report.
  62         $mform = new \mod_scorm_report_objectives_settings($PAGE->url, compact('currentgroup'));
  63         if ($fromform = $mform->get_data()) {
  64             $pagesize = $fromform->pagesize;
  65             $showobjectivescore = $fromform->objectivescore;
  66             set_user_preference('scorm_report_pagesize', $pagesize);
  67             set_user_preference('scorm_report_objectives_score', $showobjectivescore);
  68         } else {
  69             $pagesize = get_user_preferences('scorm_report_pagesize', 0);
  70             $showobjectivescore = get_user_preferences('scorm_report_objectives_score', 0);
  71         }
  72         if ($pagesize < 1) {
  73             $pagesize = SCORM_REPORT_DEFAULT_PAGE_SIZE;
  74         }
  75
  76         // Select group menu.
  77         $displayoptions = array();
  78         $displayoptions['attemptsmode'] = $attemptsmode;
  79         $displayoptions['objectivescore'] = $showobjectivescore;
  80
  81         $mform->set_data($displayoptions + array('pagesize' => $pagesize));
  82         if ($groupmode = groups_get_activity_groupmode($cm)) {   // Groups are being used.
  83             if (!$download) {
  84                 groups_print_activity_menu($cm, new \moodle_url($PAGE->url, $displayoptions));
  85             }
  86         }
  87         $formattextoptions = array('context' => \context_course::instance($course->id));
  88
  89         // We only want to show the checkbox to delete attempts
  90         // if the user has permissions and if the report mode is showing attempts.
  91         $candelete = has_capability('mod/scorm:deleteresponses', $contextmodule)
  92                 && ($attemptsmode != SCORM_REPORT_ATTEMPTS_STUDENTS_WITH_NO);
  93         // Select the students.
  94         $nostudents = false;
  95
  96         if (empty($currentgroup)) {
  97             // All users who can attempt scoes.
  98             if (!$students = get_users_by_capability($contextmodule, 'mod/scorm:savetrack', 'u.id', '', '', '', '', '', false)) {
  99                 echo $OUTPUT->notification(get_string('nostudentsyet'));
 100                 $nostudents = true;
 101                 $allowedlist = '';
 102             } else {
 103                 $allowedlist = array_keys($students);
 104             }
 105             unset($students);
 106         } else {
 107             // All users who can attempt scoes and who are in the currently selected group.
 108             $groupstudents = get_users_by_capability($contextmodule, 'mod/scorm:savetrack',
 109                                                      'u.id', '', '', '', $currentgroup, '', false);
 110             if (!$groupstudents) {
 111                 echo $OUTPUT->notification(get_string('nostudentsingroup'));
 112                 $nostudents = true;
 113                 $groupstudents = array();
 114             }
 115             $allowedlist = array_keys($groupstudents);
 116             unset($groupstudents);
 117         }
 118         if ( !$nostudents ) {
 119             // Now check if asked download of data.
 120             $coursecontext = \context_course::instance($course->id);
 121             if ($download) {
 122                 $filename = clean_filename("$course->shortname ".format_string($scorm->name, true, $formattextoptions));
 123             }
 124
 125             // Define table columns.
 126             $columns = array();
 127             $headers = array();
 128             if (!$download && $candelete) {
 129                 $columns[] = 'checkbox';
 130                 $headers[] = null;
 131             }
 132             if (!$download && $CFG->grade_report_showuserimage) {
 133                 $columns[] = 'picture';
 134                 $headers[] = '';
 135             }
 136             $columns[] = 'fullname';
 137             $headers[] = get_string('name');
 138
 139             $extrafields = get_extra_user_fields($coursecontext);
 140             foreach ($extrafields as $field) {
 141                 $columns[] = $field;
 142                 $headers[] = get_user_field_name($field);
 143             }
 144             $columns[] = 'attempt';
 145             $headers[] = get_string('attempt', 'scorm');
 146             $columns[] = 'start';
 147             $headers[] = get_string('started', 'scorm');
 148             $columns[] = 'finish';
 149             $headers[] = get_string('last', 'scorm');
 150             $columns[] = 'score';
 151             $headers[] = get_string('score', 'scorm');
 152             $scoes = $DB->get_records('scorm_scoes', array("scorm" => $scorm->id), 'sortorder, id');
 153             foreach ($scoes as $sco) {
 154                 if ($sco->launch != '') {
 155                     $columns[] = 'scograde'.$sco->id;
 156                     $headers[] = format_string($sco->title, '', $formattextoptions);
 157                 }
 158             }
 159
 160             $params = array();
 161             list($usql, $params) = $DB->get_in_or_equal($allowedlist, SQL_PARAMS_NAMED);
 162             // Construct the SQL.
 163             $select = 'SELECT DISTINCT '.$DB->sql_concat('u.id', '\'#\'', 'COALESCE(st.attempt, 0)').' AS uniqueid, ';
 164             $select .= 'st.scormid AS scormid, st.attempt AS attempt, ' .
 165                     \user_picture::fields('u', array('idnumber'), 'userid') .
 166                     get_extra_user_fields_sql($coursecontext, 'u', '', array('email', 'idnumber')) . ' ';
 167
 168             // This part is the same for all cases - join users and scorm_scoes_track tables.
 169             $from = 'FROM {user} u ';
 170             $from .= 'LEFT JOIN {scorm_scoes_track} st ON st.userid = u.id AND st.scormid = '.$scorm->id;
 171             switch ($attemptsmode) {
 172                 case SCORM_REPORT_ATTEMPTS_STUDENTS_WITH:
 173                     // Show only students with attempts.
 174                     $where = ' WHERE u.id ' .$usql. ' AND st.userid IS NOT NULL';
 175                     break;
 176                 case SCORM_REPORT_ATTEMPTS_STUDENTS_WITH_NO:
 177                     // Show only students without attempts.
 178                     $where = ' WHERE u.id ' .$usql. ' AND st.userid IS NULL';
 179                     break;
 180                 case SCORM_REPORT_ATTEMPTS_ALL_STUDENTS:
 181                     // Show all students with or without attempts.
 182                     $where = ' WHERE u.id ' .$usql. ' AND (st.userid IS NOT NULL OR st.userid IS NULL)';
 183                     break;
 184             }
 185
 186             $countsql = 'SELECT COUNT(DISTINCT('.$DB->sql_concat('u.id', '\'#\'', 'COALESCE(st.attempt, 0)').')) AS nbresults, ';
 187             $countsql .= 'COUNT(DISTINCT('.$DB->sql_concat('u.id', '\'#\'', 'st.attempt').')) AS nbattempts, ';
 188             $countsql .= 'COUNT(DISTINCT(u.id)) AS nbusers ';
 189             $countsql .= $from.$where;
 190
 191             $nbmaincolumns = count($columns); // Get number of main columns used.
 192
 193             $objectives = get_scorm_objectives($scorm->id);
 194             $nosort = array();
 195             foreach ($objectives as $scoid => $sco) {
 196                 foreach ($sco as $id => $objectivename) {
 197                     $colid = $scoid.'objectivestatus' . $id;
 198                     $columns[] = $colid;
 199                     $nosort[] = $colid;
 200
 201                     if (!$displayoptions['objectivescore']) {
 202                         // Display the objective name only.
 203                         $headers[] = $objectivename;
 204                     } else {
 205                         // Display the objective status header with a "status" suffix to avoid confusion.
 206                         $headers[] = $objectivename. ' '. get_string('status', 'scormreport_objectives');
 207
 208                         // Now print objective score headers.
 209                         $colid = $scoid.'objectivescore' . $id;
 210                         $columns[] = $colid;
 211                         $nosort[] = $colid;
 212                         $headers[] = $objectivename. ' '. get_string('score', 'scormreport_objectives');
 213                     }
 214                 }
 215             }
 216
 217             $emptycell = ''; // Used when an empty cell is being printed - in html we add a space.
 218             if (!$download) {
 219                 $emptycell = '&nbsp;';
 220                 $table = new \flexible_table('mod-scorm-report');
 221
 222                 $table->define_columns($columns);
 223                 $table->define_headers($headers);
 224                 $table->define_baseurl($PAGE->url);
 225
 226                 $table->sortable(true);
 227                 $table->collapsible(true);
 228
 229                 // This is done to prevent redundant data, when a user has multiple attempts.
 230                 $table->column_suppress('picture');
 231                 $table->column_suppress('fullname');
 232                 foreach ($extrafields as $field) {
 233                     $table->column_suppress($field);
 234                 }
 235                 foreach ($nosort as $field) {
 236                     $table->no_sorting($field);
 237                 }
 238
 239                 $table->no_sorting('start');
 240                 $table->no_sorting('finish');
 241                 $table->no_sorting('score');
 242                 $table->no_sorting('checkbox');
 243                 $table->no_sorting('picture');
 244
 245                 foreach ($scoes as $sco) {
 246                     if ($sco->launch != '') {
 247                         $table->no_sorting('scograde'.$sco->id);
 248                     }
 249                 }
 250
 251                 $table->column_class('picture', 'picture');
 252                 $table->column_class('fullname', 'bold');
 253                 $table->column_class('score', 'bold');
 254
 255                 $table->set_attribute('cellspacing', '0');
 256                 $table->set_attribute('id', 'attempts');
 257                 $table->set_attribute('class', 'generaltable generalbox');
 258
 259                 // Start working -- this is necessary as soon as the niceties are over.
 260                 $table->setup();
 261             } else if ($download == 'ODS') {
 262                 require_once("$CFG->libdir/odslib.class.php");
 263
 264                 $filename .= ".ods";
 265                 // Creating a workbook.
 266                 $workbook = new \MoodleODSWorkbook("-");
 267                 // Sending HTTP headers.
 268                 $workbook->send($filename);
 269                 // Creating the first worksheet.
 270                 $sheettitle = get_string('report', 'scorm');
 271                 $myxls = $workbook->add_worksheet($sheettitle);
 272                 // Format types.
 273                 $format = $workbook->add_format();
 274                 $format->set_bold(0);
 275                 $formatbc = $workbook->add_format();
 276                 $formatbc->set_bold(1);
 277                 $formatbc->set_align('center');
 278                 $formatb = $workbook->add_format();
 279                 $formatb->set_bold(1);
 280                 $formaty = $workbook->add_format();
 281                 $formaty->set_bg_color('yellow');
 282                 $formatc = $workbook->add_format();
 283                 $formatc->set_align('center');
 284                 $formatr = $workbook->add_format();
 285                 $formatr->set_bold(1);
 286                 $formatr->set_color('red');
 287                 $formatr->set_align('center');
 288                 $formatg = $workbook->add_format();
 289                 $formatg->set_bold(1);
 290                 $formatg->set_color('green');
 291                 $formatg->set_align('center');
 292                 // Here starts workshhet headers.
 293
 294                 $colnum = 0;
 295                 foreach ($headers as $item) {
 296                     $myxls->write(0, $colnum, $item, $formatbc);
 297                     $colnum++;
 298                 }
 299                 $rownum = 1;
 300             } else if ($download == 'Excel') {
 301                 require_once("$CFG->libdir/excellib.class.php");
 302
 303                 $filename .= ".xls";
 304                 // Creating a workbook.
 305                 $workbook = new \MoodleExcelWorkbook("-");
 306                 // Sending HTTP headers.
 307                 $workbook->send($filename);
 308                 // Creating the first worksheet.
 309                 $sheettitle = get_string('report', 'scorm');
 310                 $myxls = $workbook->add_worksheet($sheettitle);
 311                 // Format types.
 312                 $format = $workbook->add_format();
 313                 $format->set_bold(0);
 314                 $formatbc = $workbook->add_format();
 315                 $formatbc->set_bold(1);
 316                 $formatbc->set_align('center');
 317                 $formatb = $workbook->add_format();
 318                 $formatb->set_bold(1);
 319                 $formaty = $workbook->add_format();
 320                 $formaty->set_bg_color('yellow');
 321                 $formatc = $workbook->add_format();
 322                 $formatc->set_align('center');
 323                 $formatr = $workbook->add_format();
 324                 $formatr->set_bold(1);
 325                 $formatr->set_color('red');
 326                 $formatr->set_align('center');
 327                 $formatg = $workbook->add_format();
 328                 $formatg->set_bold(1);
 329                 $formatg->set_color('green');
 330                 $formatg->set_align('center');
 331
 332                 $colnum = 0;
 333                 foreach ($headers as $item) {
 334                     $myxls->write(0, $colnum, $item, $formatbc);
 335                     $colnum++;
 336                 }
 337                 $rownum = 1;
 338             } else if ($download == 'CSV') {
 339                 $csvexport = new \csv_export_writer("tab");
 340                 $csvexport->set_filename($filename, ".txt");
 341                 $csvexport->add_data($headers);
 342             }
 343
 344             if (!$download) {
 345                 $sort = $table->get_sql_sort();
 346             } else {
 347                 $sort = '';
 348             }
 349             // Fix some wired sorting.
 350             if (empty($sort)) {
 351                 $sort = ' ORDER BY uniqueid';
 352             } else {
 353                 $sort = ' ORDER BY '.$sort;
 354             }
 355
 356             if (!$download) {
 357                 // Add extra limits due to initials bar.
 358                 list($twhere, $tparams) = $table->get_sql_where();
 359                 if ($twhere) {
 360                     $where .= ' AND '.$twhere; // Initial bar.
 361                     $params = array_merge($params, $tparams);
 362                 }
 363
 364                 if (!empty($countsql)) {
 365                     $count = $DB->get_record_sql($countsql, $params);
 366                     $totalinitials = $count->nbresults;
 367                     if ($twhere) {
 368                         $countsql .= ' AND '.$twhere;
 369                     }
 370                     $count = $DB->get_record_sql($countsql, $params);
 371                     $total  = $count->nbresults;
 372                 }
 373
 374                 $table->pagesize($pagesize, $total);
 375
 376                 echo \html_writer::start_div('scormattemptcounts');
 377                 if ( $count->nbresults == $count->nbattempts ) {
 378                     echo get_string('reportcountattempts', 'scorm', $count);
 379                 } else if ( $count->nbattempts > 0 ) {
 380                     echo get_string('reportcountallattempts', 'scorm', $count);
 381                 } else {
 382                     echo $count->nbusers.' '.get_string('users');
 383                 }
 384                 echo \html_writer::end_div();
 385             }
 386
 387             // Fetch the attempts.
 388             if (!$download) {
 389                 $attempts = $DB->get_records_sql($select.$from.$where.$sort, $params,
 390                 $table->get_page_start(), $table->get_page_size());
 391                 echo \html_writer::start_div('', array('id' => 'scormtablecontainer'));
 392                 if ($candelete) {
 393                     // Start form.
 394                     $strreallydel  = addslashes_js(get_string('deleteattemptcheck', 'scorm'));
 395                     echo \html_writer::start_tag('form', array('id' => 'attemptsform', 'method' => 'post',
 396                                                                 'action' => $PAGE->url->out(false),
 397                                                                 'onsubmit' => 'return confirm("'.$strreallydel.'");'));
 398                     echo \html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'action', 'value' => 'delete'));
 399                     echo \html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'sesskey', 'value' => sesskey()));
 400                     echo \html_writer::start_div('', array('style' => 'display: none;'));
 401                     echo \html_writer::input_hidden_params($PAGE->url);
 402                     echo \html_writer::end_div();
 403                     echo \html_writer::start_div();
 404                 }
 405                 $table->initialbars($totalinitials > 20); // Build table rows.
 406             } else {
 407                 $attempts = $DB->get_records_sql($select.$from.$where.$sort, $params);
 408             }
 409             if ($attempts) {
 410                 foreach ($attempts as $scouser) {
 411                     $row = array();
 412                     if (!empty($scouser->attempt)) {
 413                         $timetracks = scorm_get_sco_runtime($scorm->id, false, $scouser->userid, $scouser->attempt);
 414                     } else {
 415                         $timetracks = '';
 416                     }
 417                     if (in_array('checkbox', $columns)) {
 418                         if ($candelete && !empty($timetracks->start)) {
 419                             $row[] = \html_writer::checkbox('attemptid[]', $scouser->userid . ':' . $scouser->attempt, false);
 420                         } else if ($candelete) {
 421                             $row[] = '';
 422                         }
 423                     }
 424                     if (in_array('picture', $columns)) {
 425                         $user = new \stdClass();
 426                         $additionalfields = explode(',', \user_picture::fields());
 427                         $user = username_load_fields_from_object($user, $scouser, null, $additionalfields);
 428                         $user->id = $scouser->userid;
 429                         $row[] = $OUTPUT->user_picture($user, array('courseid' => $course->id));
 430                     }
 431                     if (!$download) {
 432                         $url = new \moodle_url('/user/view.php', array('id' => $scouser->userid, 'course' => $course->id));
 433                         $row[] = \html_writer::link($url, fullname($scouser));
 434                     } else {
 435                         $row[] = fullname($scouser);
 436                     }
 437                     foreach ($extrafields as $field) {
 438                         $row[] = s($scouser->{$field});
 439                     }
 440                     if (empty($timetracks->start)) {
 441                         $row[] = '-';
 442                         $row[] = '-';
 443                         $row[] = '-';
 444                         $row[] = '-';
 445                     } else {
 446                         if (!$download) {
 447                             $url = new \moodle_url('/mod/scorm/report/userreport.php', array('id' => $cm->id,
 448                                     'user' => $scouser->userid, 'attempt' => $scouser->attempt));
 449                             $row[] = \html_writer::link($url, $scouser->attempt);
 450                         } else {
 451                             $row[] = $scouser->attempt;
 452                         }
 453                         if ($download == 'ODS' || $download == 'Excel' ) {
 454                             $row[] = userdate($timetracks->start, get_string("strftimedatetime", "langconfig"));
 455                         } else {
 456                             $row[] = userdate($timetracks->start);
 457                         }
 458                         if ($download == 'ODS' || $download == 'Excel' ) {
 459                             $row[] = userdate($timetracks->finish, get_string('strftimedatetime', 'langconfig'));
 460                         } else {
 461                             $row[] = userdate($timetracks->finish);
 462                         }
 463                         $row[] = scorm_grade_user_attempt($scorm, $scouser->userid, $scouser->attempt);
 464                     }
 465                     // Print out all scores of attempt.
 466                     foreach ($scoes as $sco) {
 467                         if ($sco->launch != '') {
 468                             if ($trackdata = scorm_get_tracks($sco->id, $scouser->userid, $scouser->attempt)) {
 469                                 if ($trackdata->status == '') {
 470                                     $trackdata->status = 'notattempted';
 471                                 }
 472                                 $strstatus = get_string($trackdata->status, 'scorm');
 473
 474                                 if ($trackdata->score_raw != '') { // If raw score exists, print it.
 475                                     $score = $trackdata->score_raw;
 476                                     // Add max score if it exists.
 477                                     if (isset($trackdata->score_max)) {
 478                                         $score .= '/'.$trackdata->score_max;
 479                                     }
 480
 481                                 } else { // ...else print out status.
 482                                     $score = $strstatus;
 483                                 }
 484                                 if (!$download) {
 485                                     $url = new \moodle_url('/mod/scorm/report/userreporttracks.php', array('id' => $cm->id,
 486                                         'scoid' => $sco->id, 'user' => $scouser->userid, 'attempt' => $scouser->attempt));
 487                                     $row[] = $OUTPUT->pix_icon($trackdata->status, $strstatus, 'scorm') . '<br>' .
 488                                         \html_writer::link($url, $score, array('title' => get_string('details', 'scorm')));
 489                                 } else {
 490                                     $row[] = $score;
 491                                 }
 492                                 // Iterate over tracks and match objective id against values.
 493                                 $scorm2004 = false;
 494                                 if (scorm_version_check($scorm->version, SCORM_13)) {
 495                                     $scorm2004 = true;
 496                                     $objectiveprefix = "cmi.objectives.";
 497                                 } else {
 498                                     $objectiveprefix = "cmi.objectives_";
 499                                 }
 500
 501                                 $keywords = array(".id", $objectiveprefix);
 502                                 $objectivestatus = array();
 503                                 $objectivescore = array();
 504                                 foreach ($trackdata as $name => $value) {
 505                                     if (strpos($name, $objectiveprefix) === 0 && strrpos($name, '.id') !== false) {
 506                                         $num = trim(str_ireplace($keywords, '', $name));
 507                                         if (is_numeric($num)) {
 508                                             if ($scorm2004) {
 509                                                 $element = $objectiveprefix.$num.'.completion_status';
 510                                             } else {
 511                                                 $element = $objectiveprefix.$num.'.status';
 512                                             }
 513                                             if (isset($trackdata->$element)) {
 514                                                 $objectivestatus[$value] = $trackdata->$element;
 515                                             } else {
 516                                                 $objectivestatus[$value] = '';
 517                                             }
 518                                             if ($displayoptions['objectivescore']) {
 519                                                 $element = $objectiveprefix.$num.'.score.raw';
 520                                                 if (isset($trackdata->$element)) {
 521                                                     $objectivescore[$value] = $trackdata->$element;
 522                                                 } else {
 523                                                     $objectivescore[$value] = '';
 524                                                 }
 525                                             }
 526                                         }
 527                                     }
 528                                 }
 529
 530                                 // Interaction data.
 531                                 if (!empty($objectives[$trackdata->scoid])) {
 532                                     foreach ($objectives[$trackdata->scoid] as $name) {
 533                                         if (isset($objectivestatus[$name])) {
 534                                             $row[] = s($objectivestatus[$name]);
 535                                         } else {
 536                                             $row[] = $emptycell;
 537                                         }
 538                                         if ($displayoptions['objectivescore']) {
 539                                             if (isset($objectivescore[$name])) {
 540                                                 $row[] = s($objectivescore[$name]);
 541                                             } else {
 542                                                 $row[] = $emptycell;
 543                                             }
 544
 545                                         }
 546                                     }
 547                                 }
 548                                 // End of interaction data.
 549                             } else {
 550                                 // If we don't have track data, we haven't attempted yet.
 551                                 $strstatus = get_string('notattempted', 'scorm');
 552                                 if (!$download) {
 553                                     $row[] = $OUTPUT->pix_icon('notattempted', $strstatus, 'scorm') . '<br>' . $strstatus;
 554                                 } else {
 555                                     $row[] = $strstatus;
 556                                 }
 557                                 // Complete the empty cells.
 558                                 for ($i = 0; $i < count($columns) - $nbmaincolumns; $i++) {
 559                                     $row[] = $emptycell;
 560                                 }
 561                             }
 562                         }
 563                     }
 564
 565                     if (!$download) {
 566                         $table->add_data($row);
 567                     } else if ($download == 'Excel' or $download == 'ODS') {
 568                         $colnum = 0;
 569                         foreach ($row as $item) {
 570                             $myxls->write($rownum, $colnum, $item, $format);
 571                             $colnum++;
 572                         }
 573                         $rownum++;
 574                     } else if ($download == 'CSV') {
 575                         $csvexport->add_data($row);
 576                     }
 577                 }
 578                 if (!$download) {
 579                     $table->finish_output();
 580                     if ($candelete) {
 581                         echo \html_writer::start_tag('table', array('id' => 'commands'));
 582                         echo \html_writer::start_tag('tr').\html_writer::start_tag('td');
 583                         echo \html_writer::link('#', get_string('selectall', 'scorm'), array('id' => 'checkattempts'));
 584                         echo ' / ';
 585                         echo \html_writer::link('#', get_string('selectnone', 'scorm'), array('id' => 'uncheckattempts'));
 586                         $PAGE->requires->js_amd_inline("
 587                         require(['jquery'], function($) {
 588                             $('#checkattempts').click(function(e) {
 589                                 $('#attemptsform').find('input:checkbox').prop('checked', true);
 590                                 e.preventDefault();
 591                             });
 592                             $('#uncheckattempts').click(function(e) {
 593                                 $('#attemptsform').find('input:checkbox').prop('checked', false);
 594                                 e.preventDefault();
 595                             });
 596                         });");
 597                         echo '&nbsp;&nbsp;';
 598                         echo \html_writer::empty_tag('input', array('type' => 'submit',
 599                                                                     'value' => get_string('deleteselected', 'scorm'),
 600                                                                     'class' => 'btn btn-secondary'));
 601                         echo \html_writer::end_tag('td').\html_writer::end_tag('tr').\html_writer::end_tag('table');
 602                         // Close form.
 603                         echo \html_writer::end_tag('div');
 604                         echo \html_writer::end_tag('form');
 605                     }
 606                     echo \html_writer::end_div();
 607                     if (!empty($attempts)) {
 608                         echo \html_writer::start_tag('table', array('class' => 'boxaligncenter')).\html_writer::start_tag('tr');
 609                         echo \html_writer::start_tag('td');
 610                         echo $OUTPUT->single_button(new \moodle_url($PAGE->url,
 611                                                                    array('download' => 'ODS') + $displayoptions),
 612                                                                    get_string('downloadods'),
 613                                                                    'post',
 614                                                                    ['class' => 'mt-1']);
 615                         echo \html_writer::end_tag('td');
 616                         echo \html_writer::start_tag('td');
 617                         echo $OUTPUT->single_button(new \moodle_url($PAGE->url,
 618                                                                    array('download' => 'Excel') + $displayoptions),
 619                                                                    get_string('downloadexcel'),
 620                                                                    'post',
 621                                                                    ['class' => 'mt-1']);
 622                         echo \html_writer::end_tag('td');
 623                         echo \html_writer::start_tag('td');
 624                         echo $OUTPUT->single_button(new \moodle_url($PAGE->url,
 625                                                                    array('download' => 'CSV') + $displayoptions),
 626                                                                    get_string('downloadtext'),
 627                                                                    'post',
 628                                                                    ['class' => 'mt-1']);
 629                         echo \html_writer::end_tag('td');
 630                         echo \html_writer::start_tag('td');
 631                         echo \html_writer::end_tag('td');
 632                         echo \html_writer::end_tag('tr').\html_writer::end_tag('table');
 633                     }
 634                 }
 635             } else {
 636                 if ($candelete && !$download) {
 637                     echo \html_writer::end_div();
 638                     echo \html_writer::end_tag('form');
 639                     $table->finish_output();
 640                 }
 641                 echo \html_writer::end_div();
 642             }
 643             // Show preferences form irrespective of attempts are there to report or not.
 644             if (!$download) {
 645                 $mform->set_data(compact('pagesize', 'attemptsmode'));
 646                 $mform->display();
 647             }
 648             if ($download == 'Excel' or $download == 'ODS') {
 649                 $workbook->close();
 650                 exit;
 651             } else if ($download == 'CSV') {
 652                 $csvexport->download_file();
 653                 exit;
 654             }
 655         } else {
 656             echo $OUTPUT->notification(get_string('noactivity', 'scorm'));
 657         }
 658     }// Function ends.
 659 }
 660
 661 /**
 662  * Returns The maximum numbers of Objectives associated with an Scorm Pack
 663  *
 664  * @param int $scormid Scorm instance id
 665  * @return array an array of possible objectives.
 666  */
 667 function get_scorm_objectives($scormid) {
 668     global $DB;
 669     $objectives = array();
 670     $params = array();
 671     $select = "scormid = ? AND ";
 672     $select .= $DB->sql_like("element", "?", false);
 673     $params[] = $scormid;
 674     $params[] = "cmi.objectives%.id";
 675     $value = $DB->sql_compare_text('value');
 676     $rs = $DB->get_recordset_select("scorm_scoes_track", $select, $params, 'value', "DISTINCT $value AS value, scoid");
 677     if ($rs->valid()) {
 678         foreach ($rs as $record) {
 679             $objectives[$record->scoid][] = $record->value;
 680         }
 681         // Now naturally sort the sco arrays.
 682         foreach ($objectives as $scoid => $sco) {
 683             natsort($objectives[$scoid]);
 684         }
 685     }
 686     $rs->close();
 687     return $objectives;
 688 }