class.ilTestServiceGUI.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once "./Modules/Test/classes/inc.AssessmentConstants.php";
include_once 'Modules/Test/classes/class.ilTestService.php';

class ilTestServiceGUI
{
    protected const FIXED_SHUFFLER_SEED_MIN_LENGTH = 8;
    
    public $object = null;
    
    public $service = null;

    protected $db;

    public $lng;
    public $tpl;
    
    public $ctrl;
    
    protected $tabs;

    protected $objCache;
    
    public $ilias;
    public $tree;
    public $ref_id;
    
    protected $testSessionFactory = null;

    protected $testSequenceFactory = null;

    protected $participantData;

    private $objectiveOrientedContainer;
    
    private $contextResultPresentation = true;

    public function isContextResultPresentation()
    {
        return $this->contextResultPresentation;
    }

    public function setContextResultPresentation($contextResultPresentation)
    {
        $this->contextResultPresentation = $contextResultPresentation;
    }
    
    public function __construct(ilObjTest $a_object)
    {
        global $DIC;
        $lng = $DIC['lng'];
        $tpl = $DIC['tpl'];
        $ilCtrl = $DIC['ilCtrl'];
        $ilias = $DIC['ilias'];
        $tree = $DIC['tree'];
        $ilDB = $DIC['ilDB'];
        $ilPluginAdmin = $DIC['ilPluginAdmin'];
        $ilTabs = $DIC['ilTabs'];
        $ilObjDataCache = $DIC['ilObjDataCache'];

        $lng->loadLanguageModule('cert');

        $this->db = $ilDB;
        $this->lng = &$lng;
        $this->tpl = &$tpl;
        $this->ctrl = &$ilCtrl;
        $this->tabs = $ilTabs;
        $this->objCache = $ilObjDataCache;
        $this->ilias = &$ilias;
        $this->object = &$a_object;
        $this->tree = &$tree;
        $this->ref_id = $a_object->ref_id;

        $this->service = new ilTestService($a_object);
        
        require_once 'Modules/Test/classes/class.ilTestSessionFactory.php';
        $this->testSessionFactory = new ilTestSessionFactory($this->object);

        require_once 'Modules/Test/classes/class.ilTestSequenceFactory.php';
        $this->testSequenceFactory = new ilTestSequenceFactory($ilDB, $lng, $ilPluginAdmin, $this->object);

        $this->objectiveOrientedContainer = null;
    }

    public function setParticipantData($participantData)
    {
        $this->participantData = $participantData;
    }

    public function getParticipantData()
    {
        return $this->participantData;
    }

    public function getPassOverviewTableData(ilTestSession $testSession, $passes, $withResults)
    {
        $data = array();

        if ($this->getObjectiveOrientedContainer()->isObjectiveOrientedPresentationRequired()) {
            $considerHiddenQuestions = false;

            require_once 'Modules/Course/classes/Objectives/class.ilLOTestQuestionAdapter.php';
            $objectivesAdapter = ilLOTestQuestionAdapter::getInstance($testSession);
        } else {
            $considerHiddenQuestions = true;
        }

        $scoredPass = $this->object->_getResultPass($testSession->getActiveId());
        
        require_once 'Modules/TestQuestionPool/classes/class.ilAssQuestionHintTracking.php';
        $questionHintRequestRegister = ilAssQuestionHintTracking::getRequestRequestStatisticDataRegisterByActiveId(
            $testSession->getActiveId()
        );

        foreach ($passes as $pass) {
            $row = array();

            $considerOptionalQuestions = true;

            if ($this->getObjectiveOrientedContainer()->isObjectiveOrientedPresentationRequired()) {
                $testSequence = $this->testSequenceFactory->getSequenceByActiveIdAndPass($testSession->getActiveId(), $pass);

                $testSequence->loadFromDb();
                $testSequence->loadQuestions();

                if ($this->object->isRandomTest() && !$testSequence->isAnsweringOptionalQuestionsConfirmed()) {
                    $considerOptionalQuestions = false;
                }

                $testSequence->setConsiderHiddenQuestionsEnabled($considerHiddenQuestions);
                $testSequence->setConsiderOptionalQuestionsEnabled($considerOptionalQuestions);

                $objectivesList = $this->buildQuestionRelatedObjectivesList($objectivesAdapter, $testSequence);
                $objectivesList->loadObjectivesTitles();

                $row['objectives'] = $objectivesList->getUniqueObjectivesStringForQuestions($testSequence->getUserSequenceQuestions());
            }

            if ($withResults) {
                $result_array = $this->object->getTestResult($testSession->getActiveId(), $pass, false, $considerHiddenQuestions, $considerOptionalQuestions);
                
                foreach ($result_array as $resultStructKEY => $question) {
                    if ($resultStructKEY === 'test' || $resultStructKEY === 'pass') {
                        continue;
                    }
                    
                    $requestData = $questionHintRequestRegister->getRequestByTestPassIndexAndQuestionId($pass, $question['qid']);
                    
                    if ($requestData instanceof ilAssQuestionHintRequestStatisticData && $result_array[$resultStructKEY]['requested_hints'] === null) {
                        $result_array['pass']['total_requested_hints'] += $requestData->getRequestsCount();
                        
                        $result_array[$resultStructKEY]['requested_hints'] = $requestData->getRequestsCount();
                        $result_array[$resultStructKEY]['hint_points'] = $requestData->getRequestsPoints();
                    }
                }
                
                if (!$result_array['pass']['total_max_points']) {
                    $percentage = 0;
                } else {
                    $percentage = ($result_array['pass']['total_reached_points'] / $result_array['pass']['total_max_points']) * 100;
                }
                $total_max = $result_array['pass']['total_max_points'];
                $total_reached = $result_array['pass']['total_reached_points'];
                $total_requested_hints = $result_array['pass']['total_requested_hints'];
            }

            if ($withResults) {
                $row['scored'] = ($pass == $scoredPass);
            }

            $row['pass'] = $pass;
            $row['date'] = ilObjTest::lookupLastTestPassAccess($testSession->getActiveId(), $pass);
            if ($withResults) {
                $row['num_workedthrough_questions'] = $result_array['pass']['num_workedthrough'];
                $row['num_questions_total'] = $result_array['pass']['num_questions_total'];

                if ($this->object->isOfferingQuestionHintsEnabled()) {
                    $row['hints'] = $total_requested_hints;
                }

                $row['reached_points'] = $total_reached;
                $row['max_points'] = $total_max;
                $row['percentage'] = $percentage;
            }

            $data[] = $row;
        }

        return $data;
    }

    public function setObjectiveOrientedContainer(ilTestObjectiveOrientedContainer $objectiveOrientedContainer)
    {
        $this->objectiveOrientedContainer = $objectiveOrientedContainer;
    }

    public function getObjectiveOrientedContainer()
    {
        return $this->objectiveOrientedContainer;
    }
    
    public function executeCommand()
    {
        $cmd = $this->ctrl->getCmd();
        $next_class = $this->ctrl->getNextClass($this);

        $cmd = $this->getCommand($cmd);
        switch ($next_class) {
            default:
                $ret = &$this->$cmd();
                break;
        }
        return $ret;
    }

    public function getCommand($cmd)
    {
        return $cmd;
    }
    
    protected function isPdfDeliveryRequest()
    {
        if (!isset($_GET['pdf'])) {
            return false;
        }

        if (!(bool) $_GET['pdf']) {
            return false;
        }

        return true;
    }
    
    public function buildPassOverviewTableGUI($targetGUI)
    {
        require_once 'Modules/Test/classes/tables/class.ilTestPassOverviewTableGUI.php';

        $table = new ilTestPassOverviewTableGUI($targetGUI, '');
        
        $table->setPdfPresentationEnabled(
            isset($_GET['pdf']) && $_GET['pdf'] == 1
        );
        
        $table->setObjectiveOrientedPresentationEnabled(
            $this->getObjectiveOrientedContainer()->isObjectiveOrientedPresentationRequired()
        );
        
        return $table;
    }

    public function getPassListOfAnswers(&$result_array, $active_id, $pass, $show_solutions = false, $only_answered_questions = false, $show_question_only = false, $show_reached_points = false, $anchorNav = false, ilTestQuestionRelatedObjectivesList $objectivesList = null, ilTestResultHeaderLabelBuilder $testResultHeaderLabelBuilder = null)
    {
        $maintemplate = new ilTemplate("tpl.il_as_tst_list_of_answers.html", true, true, "Modules/Test");

        $counter = 1;
        // output of questions with solutions
        foreach ($result_array as $question_data) {
            if (($question_data["workedthrough"] == 1) || ($only_answered_questions == false)) {
                $template = new ilTemplate("tpl.il_as_qpl_question_printview.html", true, true, "Modules/TestQuestionPool");
                $question_id = $question_data["qid"];
                if (is_numeric($question_id)) {
                    $maintemplate->setCurrentBlock("printview_question");
                    $question_gui = $this->object->createQuestionGUI("", $question_id);
                    $question_gui->object->setShuffler($this->buildQuestionAnswerShuffler((string) $question_id, (string) $active_id, (string) $pass));
                    if (is_object($question_gui)) {
                        if ($this->isPdfDeliveryRequest()) {
                            $question_gui->setRenderPurpose(assQuestionGUI::RENDER_PURPOSE_PRINT_PDF);
                        }
                        
                        if ($anchorNav) {
                            $template->setCurrentBlock('block_id');
                            $template->setVariable('BLOCK_ID', "detailed_answer_block_act_{$active_id}_qst_{$question_id}");
                            $template->parseCurrentBlock();

                            $template->setCurrentBlock('back_anchor');
                            $template->setVariable('HREF_BACK_ANCHOR', "#pass_details_tbl_row_act_{$active_id}_qst_{$question_id}");
                            $template->setVariable('TXT_BACK_ANCHOR', $this->lng->txt('tst_back_to_question_list'));
                            $template->parseCurrentBlock();
                        }

                        if ($show_reached_points) {
                            $template->setCurrentBlock("result_points");
                            $template->setVariable("RESULT_POINTS", $this->lng->txt("tst_reached_points") . ": " . $question_gui->object->getReachedPoints($active_id, $pass) . " " . $this->lng->txt("of") . " " . $question_gui->object->getMaximumPoints());
                            $template->parseCurrentBlock();
                        }
                        $template->setVariable("COUNTER_QUESTION", $counter . ". ");
                        $template->setVariable("TXT_QUESTION_ID", $this->lng->txt('question_id_short'));
                        $template->setVariable("QUESTION_ID", $question_gui->object->getId());
                        $template->setVariable("QUESTION_TITLE", $this->object->getQuestionTitle($question_gui->object->getTitle()));
                        
                        if ($objectivesList !== null) {
                            $objectives = $this->lng->txt('tst_res_lo_objectives_header') . ': ';
                            $objectives .= $objectivesList->getQuestionRelatedObjectiveTitles($question_gui->object->getId());
                            $template->setVariable("OBJECTIVES", $objectives);
                        }

                        $show_question_only = ($this->object->getShowSolutionAnswersOnly()) ? true : false;

                        $showFeedback = $this->isContextResultPresentation() && $this->object->getShowSolutionFeedback();
                        $show_solutions = $this->isContextResultPresentation() && $show_solutions;

                        if ($show_solutions) {
                            $compare_template = new ilTemplate('tpl.il_as_tst_answers_compare.html', true, true, 'Modules/Test');
                            $compare_template->setVariable("HEADER_PARTICIPANT", $this->lng->txt('tst_header_participant'));
                            $compare_template->setVariable("HEADER_SOLUTION", $this->lng->txt('tst_header_solution'));
                            $result_output = $question_gui->getSolutionOutput($active_id, $pass, $show_solutions, false, $show_question_only, $showFeedback);
                            $best_output = $question_gui->getSolutionOutput($active_id, $pass, false, false, $show_question_only, false, true);

                            $compare_template->setVariable('PARTICIPANT', $result_output);
                            $compare_template->setVariable('SOLUTION', $best_output);
                            if ($question_gui->supportsIntermediateSolutionOutput() && $question_gui->hasIntermediateSolution($active_id, $pass)) {
                                $question_gui->setUseIntermediateSolution(true);
                                $intermediate_output = $question_gui->getSolutionOutput($active_id, $pass, $show_solutions, false, true, $showFeedback);
                                $question_gui->setUseIntermediateSolution(false);
                                $compare_template->setVariable('TXT_INTERMEDIATE', $this->lng->txt('autosavecontent'));
                                $compare_template->setVariable('INTERMEDIATE', $intermediate_output);
                            }
                            $template->setVariable('SOLUTION_OUTPUT', $compare_template->get());
                        } else {
                            $result_output = $question_gui->getSolutionOutput($active_id, $pass, $show_solutions, false, $show_question_only, $showFeedback);
                            if ($question_gui->supportsIntermediateSolutionOutput() && $question_gui->hasIntermediateSolution($active_id, $pass)) {
                                $question_gui->setUseIntermediateSolution(true);
                                $intermediate_output = $question_gui->getSolutionOutput($active_id, $pass, $show_solutions, false, true, $showFeedback);
                                $question_gui->setUseIntermediateSolution(false);
                                $template->setVariable('TXT_INTERMEDIATE', $this->lng->txt('autosavecontent'));
                                $template->setVariable('INTERMEDIATE', $intermediate_output);
                            }
                            $template->setVariable('SOLUTION_OUTPUT', $result_output);
                        }

                        $maintemplate->setCurrentBlock("printview_question");
                        $maintemplate->setVariable("QUESTION_PRINTVIEW", $template->get());
                        $maintemplate->parseCurrentBlock();
                        $counter++;
                    }
                }
            }
        }

        if ($testResultHeaderLabelBuilder !== null) {
            if ($pass !== null) {
                $headerText = $testResultHeaderLabelBuilder->getListOfAnswersHeaderLabel($pass + 1);
            } else {
                $headerText = $testResultHeaderLabelBuilder->getVirtualListOfAnswersHeaderLabel();
            }
        } else {
            $headerText = '';
        }

        $maintemplate->setVariable("RESULTS_OVERVIEW", $headerText);
        return $maintemplate->get();
    }
    
    protected function buildQuestionAnswerShuffler(string $question_id, string $active_id, string $active_pass) : ilArrayElementShuffler
    {
        $shuffler = new ilArrayElementShuffler();
        
        $fixed_seed = $this->buildFixedShufflerSeedFromBasicSeed($question_id . $active_id . $active_pass);
        $shuffler->setSeed($fixed_seed);
        
        return $shuffler;
    }
    
    protected function buildFixedShufflerSeedFromBasicSeed(string $basic_seed) : string
    {
        $fixed_seed = $basic_seed;
        
        if (strlen($fixed_seed) < self::FIXED_SHUFFLER_SEED_MIN_LENGTH) {
            $fixed_seed *= (
                10 * (self::FIXED_SHUFFLER_SEED_MIN_LENGTH - strlen($fixed_seed))
            );
        }
        
        return $fixed_seed;
    }
    
    public function getPassListOfAnswersWithScoring(&$result_array, $active_id, $pass, $show_solutions = false)
    {
        include_once "./Modules/TestQuestionPool/classes/class.assQuestion.php";
        
        $maintemplate = new ilTemplate("tpl.il_as_tst_list_of_answers.html", true, true, "Modules/Test");

        include_once "./Modules/Test/classes/class.ilObjAssessmentFolder.php";
        $scoring = ilObjAssessmentFolder::_getManualScoring();
        
        $counter = 1;
        // output of questions with solutions
        foreach ($result_array as $question_data) {
            $question = $question_data["qid"];
            if (is_numeric($question)) {
                $question_gui = $this->object->createQuestionGUI("", $question);
                if (in_array($question_gui->object->getQuestionTypeID(), $scoring)) {
                    $template = new ilTemplate("tpl.il_as_qpl_question_printview.html", true, true, "Modules/TestQuestionPool");
                    $scoretemplate = new ilTemplate("tpl.il_as_tst_manual_scoring_points.html", true, true, "Modules/Test");
                    #mbecker: No such block. $this->tpl->setCurrentBlock("printview_question");
                    $template->setVariable("COUNTER_QUESTION", $counter . ". ");
                    $template->setVariable("QUESTION_TITLE", $this->object->getQuestionTitle($question_gui->object->getTitle()));
                    $points = $question_gui->object->getMaximumPoints();
                    if ($points == 1) {
                        $template->setVariable("QUESTION_POINTS", $points . " " . $this->lng->txt("point"));
                    } else {
                        $template->setVariable("QUESTION_POINTS", $points . " " . $this->lng->txt("points"));
                    }
                    
                    $show_question_only = ($this->object->getShowSolutionAnswersOnly()) ? true : false;
                    $result_output = $question_gui->getSolutionOutput($active_id, $pass, $show_solutions, false, $show_question_only, $this->object->getShowSolutionFeedback(), false, true);

                    $solout = $question_gui->object->getSuggestedSolutionOutput();
                    if (strlen($solout)) {
                        $scoretemplate->setCurrentBlock("suggested_solution");
                        $scoretemplate->setVariable("TEXT_SUGGESTED_SOLUTION", $this->lng->txt("solution_hint"));
                        $scoretemplate->setVariable("VALUE_SUGGESTED_SOLUTION", $solout);
                        $scoretemplate->parseCurrentBlock();
                    }
                    
                    $scoretemplate->setCurrentBlock("feedback");
                    $scoretemplate->setVariable("FEEDBACK_NAME_INPUT", $question);
                    $feedback = $this->object->getSingleManualFeedback($active_id, $question, $pass)['feedback'];
                    $scoretemplate->setVariable("VALUE_FEEDBACK", ilUtil::prepareFormOutput($this->object->prepareTextareaOutput($feedback, true)));
                    $scoretemplate->setVariable("TEXT_MANUAL_FEEDBACK", $this->lng->txt("set_manual_feedback"));
                    $scoretemplate->parseCurrentBlock();

                    $scoretemplate->setVariable("NAME_INPUT", $question);
                    $this->ctrl->setParameter($this, "active_id", $active_id);
                    $this->ctrl->setParameter($this, "pass", $pass);
                    $scoretemplate->setVariable("FORMACTION", $this->ctrl->getFormAction($this, "manscoring"));
                    $scoretemplate->setVariable("LABEL_INPUT", $this->lng->txt("tst_change_points_for_question"));
                    $scoretemplate->setVariable("VALUE_INPUT", " value=\"" . assQuestion::_getReachedPoints($active_id, $question_data["qid"], $pass) . "\"");
                    $scoretemplate->setVariable("VALUE_SAVE", $this->lng->txt("save"));
                    
                    $template->setVariable("SOLUTION_OUTPUT", $result_output);
                    $maintemplate->setCurrentBlock("printview_question");
                    $maintemplate->setVariable("QUESTION_PRINTVIEW", $template->get());
                    $maintemplate->setVariable("QUESTION_SCORING", $scoretemplate->get());
                    $maintemplate->parseCurrentBlock();
                }
                $counter++;
            }
        }
        if ($counter == 1) {
            // no scorable questions found
            $maintemplate->setVariable("NO_QUESTIONS_FOUND", $this->lng->txt("manscoring_questions_not_found"));
        }
        $maintemplate->setVariable("RESULTS_OVERVIEW", sprintf($this->lng->txt("manscoring_results_pass"), $pass + 1));

        include_once "./Services/YUI/classes/class.ilYuiUtil.php";
        ilYuiUtil::initDomEvent();

        return $maintemplate->get();
    }

    protected function getPassDetailsOverviewTableGUI($result_array, $active_id, $pass, $targetGUI, $targetCMD, $questionDetailsCMD, $questionAnchorNav, ilTestQuestionRelatedObjectivesList $objectivesList = null, $multipleObjectivesInvolved = true)
    {
        $this->ctrl->setParameter($targetGUI, 'active_id', $active_id);
        $this->ctrl->setParameter($targetGUI, 'pass', $pass);

        $tableGUI = $this->buildPassDetailsOverviewTableGUI($targetGUI, $targetCMD);

        if (!$this->isPdfDeliveryRequest()) {
            $tableGUI->setAnswerListAnchorEnabled($questionAnchorNav);
        }

        $tableGUI->setSingleAnswerScreenCmd($questionDetailsCMD);
        $tableGUI->setShowHintCount($this->object->isOfferingQuestionHintsEnabled());

        if ($objectivesList !== null) {
            $tableGUI->setQuestionRelatedObjectivesList($objectivesList);
            $tableGUI->setObjectiveOrientedPresentationEnabled(true);
        }
        
        $tableGUI->setMultipleObjectivesInvolved($multipleObjectivesInvolved);

        $tableGUI->setActiveId($active_id);
        $tableGUI->setShowSuggestedSolution(false);

        $usersQuestionSolutions = array();

        foreach ($result_array as $key => $val) {
            if ($key === 'test' || $key === 'pass') {
                continue;
            }

            if ($this->object->getShowSolutionSuggested() && strlen($val['solution'])) {
                $tableGUI->setShowSuggestedSolution(true);
            }

            if (isset($val['pass'])) {
                $tableGUI->setPassColumnEnabled(true);
            }

            $usersQuestionSolutions[$key] = $val;
        }

        $tableGUI->initColumns()->initFilter();

        $tableGUI->setFilterCommand($targetCMD . 'SetTableFilter');
        $tableGUI->setResetCommand($targetCMD . 'ResetTableFilter');

        $tableGUI->setData($usersQuestionSolutions);

        return $tableGUI;
    }

    public function getResultsSignature()
    {
        if ($this->object->getShowSolutionSignature() && !$this->object->getAnonymity()) {
            $template = new ilTemplate("tpl.il_as_tst_results_userdata_signature.html", true, true, "Modules/Test");
            $template->setVariable("TXT_DATE", $this->lng->txt("date"));
            $old_value = ilDatePresentation::useRelativeDates();
            ilDatePresentation::setUseRelativeDates(false);
            $template->setVariable("VALUE_DATE", ilDatePresentation::formatDate(new ilDate(time(), IL_CAL_UNIX)));
            ilDatePresentation::setUseRelativeDates($old_value);
            $template->setVariable("TXT_SIGNATURE", $this->lng->txt("tst_signature"));
            $template->setVariable("IMG_SPACER", ilUtil::getImagePath("spacer.png"));
            return $template->get();
        } else {
            return "";
        }
    }
    
    public function getAdditionalUsrDataHtmlAndPopulateWindowTitle($testSession, $active_id, $overwrite_anonymity = false)
    {
        if (!is_object($testSession)) {
            throw new TestException();
        }
        $template = new ilTemplate("tpl.il_as_tst_results_userdata.html", true, true, "Modules/Test");
        include_once './Services/User/classes/class.ilObjUser.php';
        $user_id = $this->object->_getUserIdFromActiveId($active_id);
        if (strlen(ilObjUser::_lookupLogin($user_id)) > 0) {
            $user = new ilObjUser($user_id);
        } else {
            $user = new ilObjUser();
            $user->setLastname($this->lng->txt("deleted_user"));
        }
        $t = $testSession->getSubmittedTimestamp();
        if (!$t) {
            $t = $this->object->_getLastAccess($testSession->getActiveId());
        }
        
        if ($this->getObjectiveOrientedContainer()->isObjectiveOrientedPresentationRequired()) {
            $uname = $this->object->userLookupFullName($user_id, $overwrite_anonymity);
            $template->setCurrentBlock("name");
            $template->setVariable('TXT_USR_NAME', $this->lng->txt("name"));
            $template->setVariable('VALUE_USR_NAME', $uname);
            $template->parseCurrentBlock();
        }

        $title_matric = "";
        if (strlen($user->getMatriculation()) && (($this->object->getAnonymity() == false) || ($overwrite_anonymity))) {
            $template->setCurrentBlock("matriculation");
            $template->setVariable("TXT_USR_MATRIC", $this->lng->txt("matriculation"));
            $template->setVariable("VALUE_USR_MATRIC", $user->getMatriculation());
            $template->parseCurrentBlock();
            $title_matric = " - " . $this->lng->txt("matriculation") . ": " . $user->getMatriculation();
        }

        $invited_user = array_pop($this->object->getInvitedUsers($user_id));
        if (strlen($invited_user["clientip"])) {
            $template->setCurrentBlock("client_ip");
            $template->setVariable("TXT_CLIENT_IP", $this->lng->txt("client_ip"));
            $template->setVariable("VALUE_CLIENT_IP", $invited_user["clientip"]);
            $template->parseCurrentBlock();
            $title_client = " - " . $this->lng->txt("clientip") . ": " . $invited_user["clientip"];
        }

        $template->setVariable("TXT_TEST_TITLE", $this->lng->txt("title"));
        $template->setVariable("VALUE_TEST_TITLE", $this->object->getTitle());
        
        // change the pagetitle (tab title or title in title bar of window)
        $pagetitle = $this->object->getTitle() . $title_matric . $title_client;
        $this->tpl->setHeaderPageTitle($pagetitle);
        
        return $template->get();
    }

    public function getCorrectSolutionOutput($question_id, $active_id, $pass, ilTestQuestionRelatedObjectivesList $objectivesList = null)
    {
        global $DIC;
        $ilUser = $DIC['ilUser'];

        $test_id = $this->object->getTestId();
        $question_gui = $this->object->createQuestionGUI("", $question_id);

        if ($this->isPdfDeliveryRequest()) {
            $question_gui->setRenderPurpose(assQuestionGUI::RENDER_PURPOSE_PRINT_PDF);
        }

        $template = new ilTemplate("tpl.il_as_tst_correct_solution_output.html", true, true, "Modules/Test");
        $show_question_only = ($this->object->getShowSolutionAnswersOnly()) ? true : false;
        $result_output = $question_gui->getSolutionOutput($active_id, $pass, true, false, $show_question_only, $this->object->getShowSolutionFeedback(), false, false, true);
        $best_output = $question_gui->getSolutionOutput($active_id, $pass, false, false, $show_question_only, false, true, false, false);
        if ($this->object->getShowSolutionFeedback() && $_GET['cmd'] != 'outCorrectSolution') {
            $specificAnswerFeedback = $question_gui->getSpecificFeedbackOutput(
                $question_gui->object->fetchIndexedValuesFromValuePairs(
                    $question_gui->object->getSolutionValues($active_id, $pass)
                )
            );
            if (strlen($specificAnswerFeedback)) {
                $template->setCurrentBlock("outline_specific_feedback");
                $template->setVariable("OUTLINE_SPECIFIC_FEEDBACK", $specificAnswerFeedback);
                $template->parseCurrentBlock();
            }
        }
        if ($this->object->isBestSolutionPrintedWithResult() && strlen($best_output)) {
            $template->setCurrentBlock("best_solution");
            $template->setVariable("TEXT_BEST_SOLUTION", $this->lng->txt("tst_best_solution_is"));
            $template->setVariable("BEST_OUTPUT", $best_output);
            $template->parseCurrentBlock();
        }
        $template->setVariable("TEXT_YOUR_SOLUTION", $this->lng->txt("tst_your_answer_was"));
        $template->setVariable("TEXT_SOLUTION_OUTPUT", $this->lng->txt("tst_your_answer_was")); // Mantis 28646. I don't really know why Ingmar renamed the placeholder, so
        // I set both old and new since the old one is set as well in several places.
        $maxpoints = $question_gui->object->getMaximumPoints();
        if ($maxpoints == 1) {
            $template->setVariable("QUESTION_TITLE", $this->object->getQuestionTitle($question_gui->object->getTitle()) . " (" . $maxpoints . " " . $this->lng->txt("point") . ")");
        } else {
            $template->setVariable("QUESTION_TITLE", $this->object->getQuestionTitle($question_gui->object->getTitle()) . " (" . $maxpoints . " " . $this->lng->txt("points") . ")");
        }
        if ($objectivesList !== null) {
            $objectives = $this->lng->txt('tst_res_lo_objectives_header') . ': ';
            $objectives .= $objectivesList->getQuestionRelatedObjectiveTitles($question_gui->object->getId());
            $template->setVariable('OBJECTIVES', $objectives);
        }
        $template->setVariable("SOLUTION_OUTPUT", $result_output);
        $template->setVariable("RECEIVED_POINTS", sprintf($this->lng->txt("you_received_a_of_b_points"), $question_gui->object->getReachedPoints($active_id, $pass), $maxpoints));
        $template->setVariable("FORMACTION", $this->ctrl->getFormAction($this));
        $template->setVariable("BACKLINK_TEXT", "&lt;&lt; " . $this->lng->txt("back"));
        return $template->get();
    }

    public function getResultsOfUserOutput($testSession, $active_id, $pass, $targetGUI, $show_pass_details = true, $show_answers = true, $show_question_only = false, $show_reached_points = false)
    {
        global $DIC;
        $ilObjDataCache = $DIC['ilObjDataCache'];

        include_once("./Services/UICore/classes/class.ilTemplate.php");
        $template = new ilTemplate("tpl.il_as_tst_results_participant.html", true, true, "Modules/Test");

        if ($this->participantData instanceof ilTestParticipantData) {
            $user_id = $this->participantData->getUserIdByActiveId($active_id);
            $uname = $this->participantData->getConcatedFullnameByActiveId($active_id, false);
        } else {
            $user_id = $this->object->_getUserIdFromActiveId($active_id);
            $uname = $this->object->userLookupFullName($user_id, true);
        }
        
        if (((array_key_exists("pass", $_GET)) && (strlen($_GET["pass"]) > 0)) || (!is_null($pass))) {
            if (is_null($pass)) {
                $pass = $_GET["pass"];
            }
        }

        if (!is_null($pass)) {
            require_once 'Modules/Test/classes/class.ilTestResultHeaderLabelBuilder.php';
            $testResultHeaderLabelBuilder = new ilTestResultHeaderLabelBuilder($this->lng, $ilObjDataCache);

            $objectivesList = null;

            if ($this->getObjectiveOrientedContainer()->isObjectiveOrientedPresentationRequired()) {
                $testSequence = $this->testSequenceFactory->getSequenceByActiveIdAndPass($active_id, $pass);
                $testSequence->loadFromDb();
                $testSequence->loadQuestions();

                require_once 'Modules/Course/classes/Objectives/class.ilLOTestQuestionAdapter.php';
                $objectivesAdapter = ilLOTestQuestionAdapter::getInstance($testSession);

                $objectivesList = $this->buildQuestionRelatedObjectivesList($objectivesAdapter, $testSequence);
                $objectivesList->loadObjectivesTitles();

                $testResultHeaderLabelBuilder->setObjectiveOrientedContainerId($testSession->getObjectiveOrientedContainerId());
                $testResultHeaderLabelBuilder->setUserId($testSession->getUserId());
                $testResultHeaderLabelBuilder->setTestObjId($this->object->getId());
                $testResultHeaderLabelBuilder->setTestRefId($this->object->getRefId());
                $testResultHeaderLabelBuilder->initObjectiveOrientedMode();
            }

            $result_array = $this->object->getTestResult(
                $active_id,
                $pass,
                false,
                !$this->getObjectiveOrientedContainer()->isObjectiveOrientedPresentationRequired()
            );

            $user_id = $this->object->_getUserIdFromActiveId($active_id);
            $showAllAnswers = true;
            if ($this->object->isExecutable($testSession, $user_id)) {
                $showAllAnswers = false;
            }
            if ($show_answers) {
                $list_of_answers = $this->getPassListOfAnswers(
                    $result_array,
                    $active_id,
                    $pass,
                    $_SESSION['tst_results_show_best_solutions'],
                    $showAllAnswers,
                    $show_question_only,
                    $show_reached_points,
                    $show_pass_details,
                    $objectivesList,
                    $testResultHeaderLabelBuilder
                );
                $template->setVariable("LIST_OF_ANSWERS", $list_of_answers);
            }

            if ($show_pass_details) {
                $overviewTableGUI = $this->getPassDetailsOverviewTableGUI($result_array, $active_id, $pass, $targetGUI, "getResultsOfUserOutput", '', $show_answers, $objectivesList);
                $overviewTableGUI->setTitle($testResultHeaderLabelBuilder->getPassDetailsHeaderLabel($pass + 1));
                $template->setVariable("PASS_DETAILS", $overviewTableGUI->getHTML());
            }

            $signature = $this->getResultsSignature();
            $template->setVariable("SIGNATURE", $signature);
            
            if ($this->object->isShowExamIdInTestResultsEnabled()) {
                $template->setCurrentBlock('exam_id_footer');
                $template->setVariable('EXAM_ID_VAL', ilObjTest::lookupExamId(
                    $testSession->getActiveId(),
                    $pass
                ));
                $template->setVariable('EXAM_ID_TXT', $this->lng->txt('exam_id'));
                $template->parseCurrentBlock();
            }
        }

        $template->setCurrentBlock('participant_back_anchor');
        $template->setVariable("HREF_PARTICIPANT_BACK_ANCHOR", "#tst_results_toolbar");
        $template->setVariable("TXT_PARTICIPANT_BACK_ANCHOR", $this->lng->txt('tst_back_to_top'));
        $template->parseCurrentBlock();

        $template->setCurrentBlock('participant_block_id');
        $template->setVariable("PARTICIPANT_BLOCK_ID", "participant_active_{$active_id}");
        $template->parseCurrentBlock();

        if ($this->isGradingMessageRequired()) {
            $gradingMessageBuilder = $this->getGradingMessageBuilder($active_id);
            $gradingMessageBuilder->buildList();

            $template->setCurrentBlock('grading_message');
            $template->setVariable('GRADING_MESSAGE', $gradingMessageBuilder->getList());
            $template->parseCurrentBlock();
        }


        $user_data = $this->getAdditionalUsrDataHtmlAndPopulateWindowTitle($testSession, $active_id, true);
        $template->setVariable("TEXT_HEADING", sprintf($this->lng->txt("tst_result_user_name"), $uname));
        $template->setVariable("USER_DATA", $user_data);

        $this->populateExamId($template, (int) $active_id, (int) $pass);
        $this->populatePassFinishDate($template, ilObjTest::lookupLastTestPassAccess($active_id, $pass));

        return $template->get();
    }

    public function getResultsHeadUserAndPass($active_id, $pass)
    {
        $template = new ilTemplate("tpl.il_as_tst_results_head_user_pass.html", true, true, "Modules/Test");
        include_once './Services/User/classes/class.ilObjUser.php';
        $user_id = $this->object->_getUserIdFromActiveId($active_id);
        if (strlen(ilObjUser::_lookupLogin($user_id)) > 0) {
            $user = new ilObjUser($user_id);
        } else {
            $user = new ilObjUser();
            $user->setLastname($this->lng->txt("deleted_user"));
        }
        $title_matric = "";
        if (strlen($user->getMatriculation()) && (($this->object->getAnonymity() == false))) {
            $template->setCurrentBlock("user_matric");
            $template->setVariable("TXT_USR_MATRIC", $this->lng->txt("matriculation"));
            $template->parseCurrentBlock();
            $template->setCurrentBlock("user_matric_value");
            $template->setVariable("VALUE_USR_MATRIC", $user->getMatriculation());
            $template->parseCurrentBlock();
            $template->touchBlock("user_matric_separator");
            $title_matric = " - " . $this->lng->txt("matriculation") . ": " . $user->getMatriculation();
        }

        $invited_user = array_pop($this->object->getInvitedUsers($user_id));
        if (strlen($invited_user["clientip"])) {
            $template->setCurrentBlock("user_clientip");
            $template->setVariable("TXT_CLIENT_IP", $this->lng->txt("client_ip"));
            $template->parseCurrentBlock();
            $template->setCurrentBlock("user_clientip_value");
            $template->setVariable("VALUE_CLIENT_IP", $invited_user["clientip"]);
            $template->parseCurrentBlock();
            $template->touchBlock("user_clientip_separator");
            $title_client = " - " . $this->lng->txt("clientip") . ": " . $invited_user["clientip"];
        }

        $template->setVariable("TXT_USR_NAME", $this->lng->txt("name"));
        $uname = $this->object->userLookupFullName($user_id, false);
        $template->setVariable("VALUE_USR_NAME", $uname);
        $template->setVariable("TXT_PASS", $this->lng->txt("scored_pass"));
        $template->setVariable("VALUE_PASS", $pass);
        return $template->get();
    }

    public function getQuestionResultForTestUsers($question_id, $test_id)
    {
        // prepare generation before contents are processed (for mathjax)
        ilPDFGeneratorUtils::prepareGenerationRequest("Test", PDF_USER_RESULT);

        // REQUIRED, since we call this object regardless of the loop
        $question_gui = $this->object->createQuestionGUI("", $question_id);

        $this->object->setAccessFilteredParticipantList(
            $this->object->buildStatisticsAccessFilteredParticipantList()
        );
        
        $foundusers = $this->object->getParticipantsForTestAndQuestion($test_id, $question_id);
        $output = '';
        foreach ($foundusers as $active_id => $passes) {
            $resultpass = $this->object->_getResultPass($active_id);
            for ($i = 0; $i < count($passes); $i++) {
                if (($resultpass !== null) && ($resultpass == $passes[$i]["pass"])) {
                    if ($output) {
                        $output .= "<br /><br /><br />";
                    }

                    // check if re-instantiation is really neccessary
                    $question_gui = $this->object->createQuestionGUI("", $passes[$i]["qid"]);
                    $output .= $this->getResultsHeadUserAndPass($active_id, $resultpass + 1);
                    $question_gui->setRenderPurpose(assQuestionGUI::RENDER_PURPOSE_PRINT_PDF);
                    $output .= $question_gui->getSolutionOutput(
                        $active_id,
                        $resultpass,
                        $graphicalOutput = false,
                        $result_output = false,
                        $show_question_only = false,
                        $show_feedback = false
                    );
                }
            }
        }

        require_once './Modules/Test/classes/class.ilTestPDFGenerator.php';
        ilTestPDFGenerator::generatePDF($output, ilTestPDFGenerator::PDF_OUTPUT_DOWNLOAD, $question_gui->object->getTitleFilenameCompliant(), PDF_USER_RESULT);
    }

    protected function buildPassDetailsOverviewTableGUI($targetGUI, $targetCMD)
    {
        if (!isset($targetGUI->object) && method_exists($targetGUI, 'getTestObj')) {
            $targetGUI->object = $targetGUI->getTestObj();
        }
        
        require_once 'Modules/Test/classes/tables/class.ilTestPassDetailsOverviewTableGUI.php';
        $tableGUI = new ilTestPassDetailsOverviewTableGUI($this->ctrl, $targetGUI, $targetCMD);
        $tableGUI->setIsPdfGenerationRequest($this->isPdfDeliveryRequest());
        return $tableGUI;
    }
    
    protected function isGradingMessageRequired()
    {
        if ($this->getObjectiveOrientedContainer()->isObjectiveOrientedPresentationRequired()) {
            return false;
        }

        if ($this->object->isShowGradingStatusEnabled()) {
            return true;
        }

        if ($this->object->isShowGradingMarkEnabled()) {
            return true;
        }

        if ($this->object->areObligationsEnabled()) {
            return true;
        }
        
        return false;
    }

    protected function getGradingMessageBuilder($activeId)
    {
        require_once 'Modules/Test/classes/class.ilTestGradingMessageBuilder.php';
        $gradingMessageBuilder = new ilTestGradingMessageBuilder($this->lng, $this->object);
        
        $gradingMessageBuilder->setActiveId($activeId);
        
        return $gradingMessageBuilder;
    }
    
    protected function buildQuestionRelatedObjectivesList(ilLOTestQuestionAdapter $objectivesAdapter, ilTestQuestionSequence $testSequence)
    {
        require_once 'Modules/Test/classes/class.ilTestQuestionRelatedObjectivesList.php';
        $questionRelatedObjectivesList = new ilTestQuestionRelatedObjectivesList();
            
        $objectivesAdapter->buildQuestionRelatedObjectiveList($testSequence, $questionRelatedObjectivesList);
        
        return $questionRelatedObjectivesList;
    }

    protected function getFilteredTestResult($active_id, $pass, $considerHiddenQuestions, $considerOptionalQuestions)
    {
        global $DIC;
        $ilDB = $DIC['ilDB'];
        $ilPluginAdmin = $DIC['ilPluginAdmin'];

        $table_gui = $this->buildPassDetailsOverviewTableGUI($this, 'outUserPassDetails');
        $table_gui->initFilter();

        require_once 'Modules/TestQuestionPool/classes/class.ilAssQuestionList.php';
        $questionList = new ilAssQuestionList($ilDB, $this->lng, $ilPluginAdmin);

        $questionList->setParentObjIdsFilter(array($this->object->getId()));
        $questionList->setQuestionInstanceTypeFilter(ilAssQuestionList::QUESTION_INSTANCE_TYPE_DUPLICATES);

        foreach ($table_gui->getFilterItems() as $item) {
            if (substr($item->getPostVar(), 0, strlen('tax_')) == 'tax_') {
                $v = $item->getValue();

                if (is_array($v) && count($v) && !(int) $v[0]) {
                    continue;
                }

                $taxId = substr($item->getPostVar(), strlen('tax_'));
                $questionList->addTaxonomyFilter($taxId, $item->getValue(), $this->object->getId(), 'tst');
            } elseif ($item->getValue() !== false) {
                $questionList->addFieldFilter($item->getPostVar(), $item->getValue());
            }
        }

        $questionList->load();

        $filteredTestResult = array();

        $resultData = $this->object->getTestResult($active_id, $pass, false, $considerHiddenQuestions, $considerOptionalQuestions);

        foreach ($resultData as $resultItemKey => $resultItemValue) {
            if ($resultItemKey === 'test' || $resultItemKey === 'pass') {
                continue;
            }

            if (!$questionList->isInList($resultItemValue['qid'])) {
                continue;
            }

            $filteredTestResult[] = $resultItemValue;
        }

        return $filteredTestResult;
    }

    protected function populateContent($content)
    {
        if ($this->isPdfDeliveryRequest()) {
            ilTestPDFGenerator::generatePDF(
                $content,
                ilTestPDFGenerator::PDF_OUTPUT_DOWNLOAD,
                $this->object->getTitleFilenameCompliant(),
                PDF_USER_RESULT
            );
        } else {
            $this->tpl->setContent($content);
        }
    }

    protected function buildUserTestResultsToolbarGUI()
    {
        require_once 'Modules/Test/classes/toolbars/class.ilTestResultsToolbarGUI.php';
        $toolbar = new ilTestResultsToolbarGUI($this->ctrl, $this->tpl, $this->lng);

        return $toolbar;
    }

    protected function outCorrectSolutionCmd()
    {
        $this->outCorrectSolution(); // cannot be named xxxCmd, because it's also called from context without Cmd in names
    }
    
    protected function outCorrectSolution()
    {
        if (!$this->object->getShowSolutionDetails()) {
            ilUtil::sendInfo($this->lng->txt("no_permission"), true);
            $this->ctrl->redirectByClass("ilobjtestgui", "infoScreen");
        }

        $testSession = $this->testSessionFactory->getSession();
        $activeId = $testSession->getActiveId();

        if (!($activeId > 0)) {
            $this->ctrl->redirectByClass("ilobjtestgui", "infoScreen");
        }

        $this->ctrl->saveParameter($this, "pass");
        $pass = (int) $_GET['pass'];

        $questionId = (int) $_GET['evaluation'];
        
        $testSequence = $this->testSequenceFactory->getSequenceByActiveIdAndPass($activeId, $pass);
        $testSequence->loadFromDb();
        $testSequence->loadQuestions();
        
        if (!$testSequence->questionExists($questionId)) {
            ilObjTestGUI::accessViolationRedirect();
        }

        if ($this->getObjectiveOrientedContainer()->isObjectiveOrientedPresentationRequired()) {
            $testSequence = $this->testSequenceFactory->getSequenceByActiveIdAndPass($activeId, $pass);
            $testSequence->loadFromDb();
            $testSequence->loadQuestions();

            require_once 'Modules/Course/classes/Objectives/class.ilLOTestQuestionAdapter.php';
            $objectivesAdapter = ilLOTestQuestionAdapter::getInstance($testSession);
            $objectivesList = $this->buildQuestionRelatedObjectivesList($objectivesAdapter, $testSequence);
            $objectivesList->loadObjectivesTitles();
        } else {
            $objectivesList = null;
        }

        global $DIC;
        $ilTabs = $DIC['ilTabs'];

        if ($this instanceof ilTestEvalObjectiveOrientedGUI) {
            $ilTabs->setBackTarget(
                $this->lng->txt("tst_back_to_virtual_pass"),
                $this->ctrl->getLinkTarget($this, 'showVirtualPass')
            );
        } else {
            $ilTabs->setBackTarget(
                $this->lng->txt("tst_back_to_pass_details"),
                $this->ctrl->getLinkTarget($this, 'outUserPassDetails')
            );
        }
        $ilTabs->clearSubTabs();

        include_once("./Services/Style/Content/classes/class.ilObjStyleSheet.php");
        $this->tpl->setCurrentBlock("ContentStyle");
        $this->tpl->setVariable("LOCATION_CONTENT_STYLESHEET", ilObjStyleSheet::getContentStylePath(0));
        $this->tpl->parseCurrentBlock();

        $this->tpl->setCurrentBlock("SyntaxStyle");
        $this->tpl->setVariable("LOCATION_SYNTAX_STYLESHEET", ilObjStyleSheet::getSyntaxStylePath());
        $this->tpl->parseCurrentBlock();

        $this->tpl->addCss(ilUtil::getStyleSheetLocation("output", "test_print.css", "Modules/Test"), "print");
        if ($this->object->getShowSolutionAnswersOnly()) {
            $this->tpl->addCss(ilUtil::getStyleSheetLocation("output", "test_print_hide_content.css", "Modules/Test"), "print");
        }

        $solution = $this->getCorrectSolutionOutput($questionId, $activeId, $pass, $objectivesList);

        $this->tpl->setContent($solution);
    }

    public function populatePassFinishDate($tpl, $passFinishDate)
    {
        $oldValue = ilDatePresentation::useRelativeDates();
        ilDatePresentation::setUseRelativeDates(false);
        $passFinishDate = ilDatePresentation::formatDate(new ilDateTime($passFinishDate, IL_CAL_UNIX));
        ilDatePresentation::setUseRelativeDates($oldValue);
        $tpl->setVariable("PASS_FINISH_DATE_LABEL", $this->lng->txt('tst_pass_finished_on'));
        $tpl->setVariable("PASS_FINISH_DATE_VALUE", $passFinishDate);
    }

    public function populateExamId(ilTemplate $tpl, int $activeId, int $pass)
    {
        if ($this->object->isShowExamIdInTestResultsEnabled()) {
            $tpl->setVariable("EXAM_ID_TXT", $this->lng->txt('exam_id'));
            $tpl->setVariable('EXAM_ID', ilObjTest::lookupExamId(
                $activeId,
                $pass
            ));
        }
    }
}

// internal sort function to sort the result array
function sortResults($a, $b)
{
    $sort = ($_GET["sort"]) ? ($_GET["sort"]) : "nr";
    $sortorder = ($_GET["sortorder"]) ? ($_GET["sortorder"]) : "asc";
    if (strcmp($sortorder, "asc")) {
        $smaller = 1;
        $greater = -1;
    } else {
        $smaller = -1;
        $greater = 1;
    }
    if ($a[$sort] == $b[$sort]) {
        return 0;
    }
    return ($a[$sort] < $b[$sort]) ? $smaller : $greater;
}