class.ilTestPlayerAbstractGUI.php

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

require_once './Modules/Test/classes/inc.AssessmentConstants.php';
require_once './Modules/Test/classes/class.ilTestPlayerCommands.php';
require_once './Modules/Test/classes/class.ilTestServiceGUI.php';
require_once './Modules/TestQuestionPool/classes/class.assQuestion.php';
require_once './Services/UIComponent/Button/classes/class.ilSubmitButton.php';
require_once 'Modules/Test/classes/class.ilTestPlayerNavButton.php';

abstract class ilTestPlayerAbstractGUI extends ilTestServiceGUI
{
        const PRESENTATION_MODE_VIEW = 'view';
        const PRESENTATION_MODE_EDIT = 'edit';

        const FIXED_SHUFFLER_SEED_MIN_LENGTH = 8;
        
        var $ref_id;
        var $saveResult;
        var $sequence;
        var $cmdCtrl;
        var $maxProcessingTimeReached;
        var $endingTimeReached;

        protected $passwordChecker;

        protected $processLocker;
        
        protected $testSession;

        protected $assSettings;

        protected $testSequence = null;

        public function __construct($a_object)
        {
                parent::__construct($a_object);
                $this->ref_id = $_GET["ref_id"];
                
                global $rbacsystem, $ilUser, $lng;
                require_once 'Modules/Test/classes/class.ilTestPasswordChecker.php';
                $this->passwordChecker = new ilTestPasswordChecker($rbacsystem, $ilUser, $this->object, $lng);
                
                $this->processLocker = null;
                $this->testSession = null;
                $this->assSettings = null;
        }

        protected function checkReadAccess()
        {
                global $rbacsystem;

                if(!$rbacsystem->checkAccess("read", $this->object->getRefId()))
                {
                        // only with read access it is possible to run the test
                        $this->ilias->raiseError($this->lng->txt("cannot_execute_test"), $this->ilias->error_obj->MESSAGE);
                }
        }

        protected function checkTestExecutable()
        {
                $executable = $this->object->isExecutable($this->testSession, $this->testSession->getUserId());
                
                if( !$executable['executable'] )
                {
                        ilUtil::sendInfo($executable['errormessage'], true);
                        $this->ctrl->redirectByClass("ilobjtestgui", "infoScreen");
                }
        }
        
        protected function checkTestSessionUser(ilTestSession $testSession)
        {
                global $DIC; /* @var ILIAS\DI\Container $DIC */
                
                if( $testSession->getUserId() != $DIC->user()->getId() )
                {
                        throw new ilTestException('active id given does not relate to current user!');
                }
        }
        
        protected function ensureExistingTestSession(ilTestSession $testSession)
        {
                if( $testSession->getActiveId() )
                {
                        return;
                }

                global $ilUser;
                
                $testSession->setUserId($ilUser->getId());

                if( $testSession->isAnonymousUser() )
                {
                        if( !$testSession->doesAccessCodeInSessionExists() )
                        {
                                return;
                        }

                        $testSession->setAnonymousId($testSession->getAccessCodeFromSession());
                }
                
                $testSession->saveToDb();
        }
        
        protected function initProcessLocker($activeId)
        {
                global $ilDB;
                
                require_once 'Modules/Test/classes/class.ilTestProcessLockerFactory.php';
                $processLockerFactory = new ilTestProcessLockerFactory($this->assSettings, $ilDB);

                $processLockerFactory->setActiveId($activeId);
                
                $this->processLocker = $processLockerFactory->getLocker();
        }

        function saveTagsCmd()
        {
                include_once("./Services/Tagging/classes/class.ilTaggingGUI.php");
                $tagging_gui = new ilTaggingGUI();
                $tagging_gui->setObject($this->object->getId(), $this->object->getType());
                $tagging_gui->saveInput();
                $this->ctrl->redirectByClass("ilobjtestgui", "infoScreen");
        }

        function updateWorkingTime() 
        {
                if ($_SESSION["active_time_id"])
                {
                        $this->object->updateWorkingTime($_SESSION["active_time_id"]);
                }
                
                $_SESSION["active_time_id"] = $this->object->startWorkingTime(
                        $this->testSession->getActiveId(), $this->testSession->getPass()
                );
        }

// fau: testNav - new function removeIntermediateSolution()
        public function removeIntermediateSolution()
        {
                $questionId = $this->getCurrentQuestionId();
                
                $this->getQuestionInstance($questionId)->removeIntermediateSolution(
                        $this->testSession->getActiveId(), $this->testSession->getPass()
                );
        }
// fau.

        abstract public function saveQuestionSolution($authorized = true, $force = false);

        abstract protected function canSaveResult();

        public function suspendTestCmd()
        {
                $this->ctrl->redirectByClass("ilobjtestgui", "infoScreen"); 
        }

        public function isMaxProcessingTimeReached() 
        {
                global $ilUser;
                $active_id = $this->testSession->getActiveId();
                $starting_time = $this->object->getStartingTimeOfUser($active_id);
                if ($starting_time === FALSE)
                {
                        return FALSE;
                }
                else
                {
                        return $this->object->isMaxProcessingTimeReached($starting_time, $active_id);
                }
        }

        protected function determineInlineScoreDisplay()
        {
                $show_question_inline_score = FALSE;
                if ($this->object->getAnswerFeedbackPoints())
                {
                        $show_question_inline_score = TRUE;
                        return $show_question_inline_score;
                }
                return $show_question_inline_score;
        }

        protected function populateTestNavigationToolbar(ilTestNavigationToolbarGUI $toolbarGUI)
        {
                $this->tpl->setCurrentBlock('test_nav_toolbar');
                $this->tpl->setVariable('TEST_NAV_TOOLBAR', $toolbarGUI->getHTML());
                $this->tpl->parseCurrentBlock();
        }

        protected function populateQuestionNavigation($sequenceElement, $disabled, $primaryNext)
        {
                if( !$this->isFirstQuestionInSequence($sequenceElement) )
                {
                        $this->populatePreviousButtons($disabled);
                }

                if( !$this->isLastQuestionInSequence($sequenceElement) )
                {
                        $this->populateNextButtons($disabled, $primaryNext);
                }
        }

        protected function populatePreviousButtons($disabled)
        {
                $this->populateUpperPreviousButtonBlock($disabled);
                $this->populateLowerPreviousButtonBlock($disabled);
        }
        
        protected function populateNextButtons($disabled, $primaryNext)
        {
                $this->populateUpperNextButtonBlock($disabled, $primaryNext);
                $this->populateLowerNextButtonBlock($disabled, $primaryNext);
        }

        protected function populateLowerNextButtonBlock($disabled, $primaryNext)
        {
                $button = $this->buildNextButtonInstance($disabled, $primaryNext);
                $button->setId('bottomnextbutton');

                $this->tpl->setCurrentBlock( "next_bottom" );
                $this->tpl->setVariable( "BTN_NEXT", $button->render());
                $this->tpl->parseCurrentBlock();
        }

        protected function populateUpperNextButtonBlock($disabled, $primaryNext)
        {
                $button = $this->buildNextButtonInstance($disabled, $primaryNext);
                $button->setId('nextbutton');

                $this->tpl->setCurrentBlock( "next" );
                $this->tpl->setVariable( "BTN_NEXT", $button->render());
                $this->tpl->parseCurrentBlock();
        }

        protected function populateLowerPreviousButtonBlock($disabled)
        {
                $button = $this->buildPreviousButtonInstance($disabled);
                $button->setId('bottomprevbutton');

                $this->tpl->setCurrentBlock( "prev_bottom" );
                $this->tpl->setVariable("BTN_PREV", $button->render());
                $this->tpl->parseCurrentBlock();
        }

        protected function populateUpperPreviousButtonBlock($disabled)
        {
                $button = $this->buildPreviousButtonInstance($disabled);
                $button->setId('prevbutton');

                $this->tpl->setCurrentBlock( "prev" );
                $this->tpl->setVariable("BTN_PREV", $button->render());
                $this->tpl->parseCurrentBlock();
        }
        
        private function buildNextButtonInstance($disabled, $primaryNext)
        {
                $button = ilTestPlayerNavButton::getInstance();
// fau: testNav - set glyphicon and primary
                $button->setPrimary($primaryNext);
                $button->setRightGlyph('glyphicon glyphicon-arrow-right');
// fau.
                $button->setNextCommand(ilTestPlayerCommands::NEXT_QUESTION);
                $button->setUrl($this->ctrl->getLinkTarget($this, ilTestPlayerCommands::NEXT_QUESTION));
                $button->setCaption('next_question');
                $button->addCSSClass('ilTstNavElem');
                //$button->setDisabled($disabled);
                return $button;
        }

        private function buildPreviousButtonInstance($disabled)
        {
                $button = ilTestPlayerNavButton::getInstance();
// fau: testNav - set glyphicon and primary
                $button->setLeftGlyph('glyphicon glyphicon-arrow-left');
// fau.
                $button->setNextCommand(ilTestPlayerCommands::PREVIOUS_QUESTION);
                $button->setUrl($this->ctrl->getLinkTarget($this, ilTestPlayerCommands::PREVIOUS_QUESTION));
                $button->setCaption('previous_question');
                $button->addCSSClass('ilTstNavElem');
                //$button->setDisabled($disabled);
                return $button;
        }

        protected function populateSpecificFeedbackBlock($question_gui)
        {
                $this->tpl->setCurrentBlock( "specific_feedback" );
                $this->tpl->setVariable( "SPECIFIC_FEEDBACK",
                                                                 $question_gui->getSpecificFeedbackOutput(
                                                                         $this->testSession->getActiveId(),
                                                                         NULL
                                                                 )
                );
                $this->tpl->parseCurrentBlock();
        }

        protected function populateGenericFeedbackBlock(assQuestionGUI $question_gui, $solutionCorrect)
        {
                $feedback = $question_gui->getGenericFeedbackOutput( $this->testSession->getActiveId(),NULL);
                
                if( strlen($feedback) )
                {
                        $cssClass = ( $solutionCorrect ?
                                ilAssQuestionFeedback::CSS_CLASS_FEEDBACK_CORRECT : ilAssQuestionFeedback::CSS_CLASS_FEEDBACK_WRONG 
                        );
                        
                        $this->tpl->setCurrentBlock( "answer_feedback" );
                        $this->tpl->setVariable( "ANSWER_FEEDBACK", $feedback);
                        $this->tpl->setVariable( "ILC_FB_CSS_CLASS", $cssClass);
                        $this->tpl->parseCurrentBlock();
                }
        }

        protected function populateScoreBlock($reachedPoints, $maxPoints)
        {
                $scoreInformation = sprintf(
                                $this->lng->txt( "you_received_a_of_b_points" ), $reachedPoints, $maxPoints
                );
                
                $this->tpl->setCurrentBlock( "received_points_information" );
                $this->tpl->setVariable("RECEIVED_POINTS_INFORMATION", $scoreInformation);
                $this->tpl->parseCurrentBlock();
        }

        protected function populateSolutionBlock($solutionoutput)
        {
                if( strlen($solutionoutput) )
                {
                        $this->tpl->setCurrentBlock( "solution_output" );
                        $this->tpl->setVariable( "CORRECT_SOLUTION", $this->lng->txt( "tst_best_solution_is" ) );
                        $this->tpl->setVariable( "QUESTION_FEEDBACK", $solutionoutput );
                        $this->tpl->parseCurrentBlock();
                }
        }
        
        protected function populateSyntaxStyleBlock()
        {
                $this->tpl->setCurrentBlock( "SyntaxStyle" );
                $this->tpl->setVariable( "LOCATION_SYNTAX_STYLESHEET",
                                                                 ilObjStyleSheet::getSyntaxStylePath()
                );
                $this->tpl->parseCurrentBlock();
        }

        protected function populateContentStyleBlock()
        {
                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();
        }

        public function setAnonymousIdCmd()
        {
                if( $this->testSession->isAnonymousUser() )
                {
                        $this->testSession->setAccessCodeToSession($_POST['anonymous_id']);
                }
                
                $this->ctrl->redirectByClass("ilobjtestgui", "infoScreen");
        }

        protected function startPlayerCmd()
        {
                $testStartLock = $this->getLockParameter();
                $isFirstTestStartRequest = false;

                $this->processLocker->executeTestStartLockOperation(function() use ($testStartLock, &$isFirstTestStartRequest) {

                        if($this->testSession->lookupTestStartLock() != $testStartLock)
                        {
                                $this->testSession->persistTestStartLock($testStartLock);
                                $isFirstTestStartRequest = true;
                        }

                });

                if( $isFirstTestStartRequest )
                {
                        $this->handleUserSettings();
                        $this->ctrl->redirect($this, ilTestPlayerCommands::INIT_TEST);
                }
                
                $this->ctrl->setParameterByClass('ilObjTestGUI', 'lock', $testStartLock);
                $this->ctrl->redirectByClass("ilobjtestgui", "redirectToInfoScreen");
        }

        public function getLockParameter()
        {
                if( isset($_POST['lock']) && strlen($_POST['lock']) )
                {
                        return $_POST['lock'];
                }
                elseif( isset($_GET['lock']) && strlen($_GET['lock']) )
                {
                        return $_GET['lock'];
                }

                return null;
        }

        abstract protected function resumePlayerCmd();

        protected function initTestCmd()
        {
                if ($this->object->checkMaximumAllowedUsers() == FALSE)
                {
                        return $this->showMaximumAllowedUsersReachedMessage();
                }

                if( $this->testSession->isAnonymousUser() && !$this->testSession->getActiveId() )
                {
                        $accessCode = $this->testSession->createNewAccessCode();
                        
                        $this->testSession->setAccessCodeToSession($accessCode);
                        $this->testSession->setAnonymousId($accessCode);
                        $this->testSession->saveToDb();
                        
                        $this->ctrl->redirect($this, ilTestPlayerCommands::DISPLAY_ACCESS_CODE);
                }

                $this->testSession->unsetAccessCodeInSession();
                $this->ctrl->redirect($this, ilTestPlayerCommands::START_TEST);
        }
        
        function displayAccessCodeCmd()
        {
                $this->tpl->addBlockFile($this->getContentBlockName(), "adm_content", "tpl.il_as_tst_anonymous_code_presentation.html", "Modules/Test");
                $this->tpl->setCurrentBlock("adm_content");
                $this->tpl->setVariable("TEXT_ANONYMOUS_CODE_CREATED", $this->lng->txt("tst_access_code_created"));
                $this->tpl->setVariable("TEXT_ANONYMOUS_CODE", $this->testSession->getAccessCodeFromSession());
                $this->tpl->setVariable("FORMACTION", $this->ctrl->getFormAction($this));
                $this->tpl->setVariable("CMD_CONFIRM", ilTestPlayerCommands::ACCESS_CODE_CONFIRMED);
                $this->tpl->setVariable("TXT_CONFIRM", $this->lng->txt("continue_work"));
                $this->tpl->parseCurrentBlock();
        }
        
        function accessCodeConfirmedCmd()
        {
                $this->ctrl->redirect($this, ilTestPlayerCommands::START_TEST);
        }

        public function handleUserSettings()
        {
                global $ilUser;

                if ($_POST["chb_javascript"])
                {
                        $ilUser->writePref("tst_javascript", 1);
                }
                else
                {
                        $ilUser->writePref("tst_javascript", 0);
                }
                
                // hide previous results
                if ($this->object->getNrOfTries() != 1)
                {
                        if ($this->object->getUsePreviousAnswers() == 1)
                        {
                                if ($_POST["chb_use_previous_answers"])
                                {
                                        $ilUser->writePref("tst_use_previous_answers", 1);
                                }
                                else
                                { 
                                        $ilUser->writePref("tst_use_previous_answers", 0);
                                }
                        }
                }
        }

        function redirectAfterAutosaveCmd()
        {
                $active_id = $this->testSession->getActiveId();
                $actualpass = ilObjTest::_getPass($active_id);
                
                $this->performTestPassFinishedTasks($actualpass);

                $this->testSession->setLastFinishedPass($this->testSession->getPass());
                $this->testSession->increaseTestPass();
                
                $url = $this->ctrl->getLinkTarget($this, ilTestPlayerCommands::AFTER_TEST_PASS_FINISHED);

                $this->tpl->addBlockFile($this->getContentBlockName(), "adm_content", "tpl.il_as_tst_redirect_autosave.html", "Modules/Test");  
                $this->tpl->setVariable("TEXT_REDIRECT", $this->lng->txt("redirectAfterSave"));
                $this->tpl->setCurrentBlock("HeadContent");
                $this->tpl->setVariable("CONTENT_BLOCK", "<meta http-equiv=\"refresh\" content=\"5; url=" . $url . "\">");
                $this->tpl->parseCurrentBlock();
        }
        
        abstract protected function getCurrentQuestionId();

        function autosaveCmd()
        {
                $canSaveResult = $this->canSaveResult();
                $authorizedSolution = !$canSaveResult;
                
                $result = "";
                if (is_array($_POST) && count($_POST) > 0)
                {
                        if( $this->isParticipantsAnswerFixed($this->getCurrentQuestionId()) )
                        {
                                $result = '-IGNORE-';
                        }
                        else
                        {
// fau: testNav - delete intermediate solution if answer is unchanged
                                // answer is changed, so save the change as intermediate solution
                                if ($this->getAnswerChangedParameter())
                                {
                                $res = $this->saveQuestionSolution($authorizedSolution, true);
                                }
                                // answer is not changed, so delete an intermediate solution
                                else
                                {
                                        $db_res = $this->removeIntermediateSolution();
                                        $res = is_int($db_res);
                                }
// fau.
                                if ($res)
                                {
                                        $result = $this->lng->txt("autosave_success");
                                }
                                else
                                {
                                        $result = $this->lng->txt("autosave_failed");
                                }
                        }
                }
// fau: testNav - simplify the redirection if time is reached
                if (!$canSaveResult && !$this->ctrl->isAsynch())
                {
                        // this was the last action in the test, saving is no longer allowed
                        // form was directly submitted in saveOnTimeReached()
                        // instead of ajax with autoSave()
                        $this->ctrl->redirect($this, ilTestPlayerCommands::REDIRECT_ON_TIME_LIMIT);
                }
// fau.
                echo $result;
                exit;
        }
        
// fau: testNav - new function detectChangesCmd()
        protected function detectChangesCmd()
        {
                $questionId = $this->getCurrentQuestionId();
                $state = $this->getQuestionInstance($questionId)->lookupForExistingSolutions(
                        $this->testSession->getActiveId(),
                        $this->testSession->getPass()
                );
                $result = array();
                $result['isAnswered'] = $state['authorized'];
                $result['isAnswerChanged'] = $state['intermediate'];

                echo json_encode($result);
                exit;
        }
// fau.

        protected function submitIntermediateSolutionCmd()
        {
                $this->saveQuestionSolution(false, true);
// fau: testNav - set the 'answer changed' parameter when an intermediate solution is submitted
                $this->setAnswerChangedParameter(true);
// fau.
                $this->ctrl->redirect($this, ilTestPlayerCommands::SHOW_QUESTION);
        }
        
        public function toggleSideListCmd()
        {
                global $ilUser;

                $show_side_list = $ilUser->getPref('side_list_of_questions');
                $ilUser->writePref('side_list_of_questions', !$show_side_list);
                $this->ctrl->redirect($this, ilTestPlayerCommands::SHOW_QUESTION);
        }
        
        protected function markQuestionAndSaveIntermediateCmd()
        {
// fau: testNav - handle intermediate submit when marking the question
                $this->handleIntermediateSubmit();
// fau.
                $this->markQuestionCmd();
        }
        
        protected function markQuestionCmd()
        {
                $questionId  = $this->testSequence->getQuestionForSequence(
                        $this->getCurrentSequenceElement()
                );
                
                $this->object->setQuestionSetSolved(1, $questionId, $this->testSession->getUserId());
                
                $this->ctrl->redirect($this, ilTestPlayerCommands::SHOW_QUESTION);
        }

        protected function unmarkQuestionAndSaveIntermediateCmd()
        {
// fau: testNav - handle intermediate submit when unmarking the question
                $this->handleIntermediateSubmit();
// fau.
                $this->unmarkQuestionCmd();
        }

        protected function unmarkQuestionCmd()
        {
                $questionId  = $this->testSequence->getQuestionForSequence(
                        $this->getCurrentSequenceElement()
                );

                $this->object->setQuestionSetSolved(0, $questionId, $this->testSession->getUserId());

                $this->ctrl->redirect($this, ilTestPlayerCommands::SHOW_QUESTION);
        }

        protected function confirmFinishCmd()
        {
                $this->finishTestCmd(false);
        }
        
        protected function confirmFinishTestCmd()
        {
                global $ilUser;

                require_once 'Services/Utilities/classes/class.ilConfirmationGUI.php';
                $confirmation = new ilConfirmationGUI();
                $confirmation->setFormAction($this->ctrl->getFormAction($this, 'confirmFinish'));
                $confirmation->setHeaderText($this->lng->txt("tst_finish_confirmation_question"));
                $confirmation->setConfirm($this->lng->txt("tst_finish_confirm_button"), 'confirmFinish');
                $confirmation->setCancel($this->lng->txt("tst_finish_confirm_cancel_button"), ilTestPlayerCommands::BACK_FROM_FINISHING);

                $this->populateHelperGuiContent($confirmation);
        }

        function finishTestCmd($requires_confirmation = true)
        {
                global $ilAuth;

                unset($_SESSION["tst_next"]);

                $active_id = $this->testSession->getActiveId();
                $actualpass = ilObjTest::_getPass($active_id);

                $allObligationsAnswered = ilObjTest::allObligationsAnswered($this->testSession->getTestId(), $active_id, $actualpass);

                /*
                 * The following "endgames" are possible prior to actually finishing the test:
                 * - Obligations (Ability to finish the test.)
                 *      If not all obligatory questions are answered, the user is presented a list
                 *      showing the deficits.
                 * - Examview (Will to finish the test.)
                 *      With the examview, the participant can review all answers given in ILIAS or a PDF prior to
                 *      commencing to the finished test.
                 * - Last pass allowed (Reassuring the will to finish the test.)
                 *      If passes are limited, on the last pass, an additional confirmation is to be displayed.
                 */

                
                if( $this->object->areObligationsEnabled() && !$allObligationsAnswered )
                {
                        if( $this->object->getListOfQuestions() )
                        {
                                $this->ctrl->redirect($this, ilTestPlayerCommands::QUESTION_SUMMARY_INC_OBLIGATIONS);
                        }
                        else
                        {
                                $this->ctrl->redirect($this, ilTestPlayerCommands::QUESTION_SUMMARY_OBLIGATIONS_ONLY);
                        }

                        return;
                }

                // Examview enabled & !reviewed & requires_confirmation? test_submission_overview (review gui)
                if ($this->object->getEnableExamview() && !isset($_GET['reviewed']) && $requires_confirmation)
                {
                        $this->ctrl->redirectByClass('ilTestSubmissionReviewGUI', "show");
                        return;
                }

                // Last try in limited tries & !confirmed
                if (($requires_confirmation) && ($actualpass == $this->object->getNrOfTries() - 1))
                {
                        // show confirmation page
                        return $this->confirmFinishTestCmd();
                }

                // Last try in limited tries & confirmed?
                if(($actualpass == $this->object->getNrOfTries() - 1) && (!$requires_confirmation))
                {
                        // @todo: php7 ask mister test
                        #$ilAuth->setIdle(ilSession::getIdleValue(), false);
                        #$ilAuth->setExpire(0);
                        switch($this->object->getMailNotification())
                        {
                                case 1:
                                        $this->object->sendSimpleNotification($active_id);
                                        break;
                                case 2:
                                        $this->object->sendAdvancedNotification($active_id);
                                        break;
                        }
                }

                // Non-last try finish
                if(!$_SESSION['tst_pass_finish'])
                {
                        if(!$_SESSION['tst_pass_finish']) $_SESSION['tst_pass_finish'] = 1;
                        if($this->object->getMailNotificationType() == 1)
                        {
                                switch($this->object->getMailNotification())
                                {
                                        case 1:
                                                $this->object->sendSimpleNotification($active_id);
                                                break;
                                        case 2:
                                                $this->object->sendAdvancedNotification($active_id);
                                                break;
                                }
                        }
                }
                
                // no redirect request loops after test pass finished tasks has been performed
                
                $this->performTestPassFinishedTasks($actualpass);

                $this->ctrl->redirect($this, ilTestPlayerCommands::AFTER_TEST_PASS_FINISHED);
        }

        protected function performTestPassFinishedTasks($finishedPass)
        {
                require_once 'Modules/Test/classes/class.ilTestPassFinishTasks.php';

                $finishTasks = new ilTestPassFinishTasks($this->testSession->getActiveId(), $this->object->getId());
                $finishTasks->performFinishTasks($this->processLocker);
        }

        protected function afterTestPassFinishedCmd()
        {
                $activeId = $this->testSession->getActiveId();
                $lastFinishedPass = $this->testSession->getLastFinishedPass();

                // handle test signature
                if ( $this->isTestSignRedirectRequired($activeId, $lastFinishedPass) )
                {
                        $this->ctrl->redirectByClass('ilTestSignatureGUI', 'invokeSignaturePlugin');
                }

                // show final statement
                if(!$_GET['skipfinalstatement'])
                {
                        if ($this->object->getShowFinalStatement())
                        {
                                $this->ctrl->redirect($this, ilTestPlayerCommands::SHOW_FINAL_STATMENT);
                        }
                }

                // redirect after test
                $redirection_mode = $this->object->getRedirectionMode();
                $redirection_url  = $this->object->getRedirectionUrl();
                if( $redirection_url && $redirection_mode && !$this->object->canViewResults() )
                {
                        if( $redirection_mode == REDIRECT_KIOSK )
                        {
                                if( $this->object->getKioskMode() )
                                {
                                        ilUtil::redirect($redirection_url);
                                }
                        }
                        else
                        {
                                ilUtil::redirect($redirection_url);
                        }
                }

                // default redirect (pass overview when enabled, otherwise infoscreen)
                $this->redirectBackCmd();
        }

        protected function isTestSignRedirectRequired($activeId, $lastFinishedPass)
        {
                if( !$this->object->getSignSubmission() )
                {
                        return false;
                }

                if( !is_null(ilSession::get("signed_{$activeId}_{$lastFinishedPass}")) )
                {
                        return false;
                }

                global $ilPluginAdmin;

                $activePlugins = $ilPluginAdmin->getActivePluginsForSlot(IL_COMP_MODULE, 'Test', 'tsig');

                if( !count($activePlugins) )
                {
                        return false;
                }
                
                return true;
        }

        protected function archiveParticipantSubmission( $active, $pass )
        {
                global $ilObjDataCache;

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

                $objectivesList = null;

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

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

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

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

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

                require_once 'class.ilTestEvaluationGUI.php';
                $testevaluationgui = new ilTestEvaluationGUI($this->object);
                $results_output = $testevaluationgui->getPassListOfAnswers(
                        $results, $active, $pass, false, false, false, false, false, $objectivesList, $testResultHeaderLabelBuilder
                );

                require_once './Modules/Test/classes/class.ilTestArchiver.php';
                global $ilSetting;
                $inst_id = $ilSetting->get('inst_id', null);
                $archiver = new ilTestArchiver($this->object->getId());

                $path =  ilUtil::getWebspaceDir() . '/assessment/'. $this->object->getId() . '/exam_pdf';
                if (!is_dir($path))
                {
                        ilUtil::makeDirParents($path);
                }
                $filename = realpath($path) . '/exam_N' . $inst_id . '-' . $this->object->getId()
                                        . '-' . $active . '-' . $pass . '.pdf';

                require_once 'class.ilTestPDFGenerator.php';
                ilTestPDFGenerator::generatePDF($results_output, ilTestPDFGenerator::PDF_OUTPUT_FILE, $filename);
                //$template->setVariable("PDF_FILE_LOCATION", $filename);
                // Participant submission
                $archiver->handInParticipantSubmission( $active, $pass, $filename, $results_output );
                //$archiver->handInParticipantMisc( $active, $pass, 'signature_gedoens.sig', $filename );
                //$archiver->handInParticipantQuestionMaterial( $active, $pass, 123, 'file_upload.pdf', $filename );

                global $ilias;
                $questions = $this->object->getQuestions();
                foreach ($questions as $question_id)
                {
                        $question_object = $this->object->getQuestionDataset( $question_id );
                        if ($question_object->type_tag == 'assFileUpload')
                        {
                                // Pfad: /data/default/assessment/tst_2/14/21/files/file_14_4_1370417414.png
                                // /data/ - klar
                                // /assessment/ - Konvention
                                // /tst_2/ = /tst_<test_id> (ilObjTest)
                                // /14/ = /<active_fi>/
                                // /21/ = /<question_id>/ (question_object)
                                // /files/ - Konvention
                                // file_14_4_1370417414.png = file_<active_fi>_<pass>_<some timestamp>.<ext>

                                $candidate_path =
                                        $ilias->ini_ilias->readVariable( 'server', 'absolute_path' ) . ilTestArchiver::DIR_SEP
                                                . $ilias->ini_ilias->readVariable( 'clients', 'path' ) . ilTestArchiver::DIR_SEP
                                                . $ilias->client_id . ilTestArchiver::DIR_SEP
                                                . 'assessment' . ilTestArchiver::DIR_SEP
                                                . 'tst_' . $this->object->test_id . ilTestArchiver::DIR_SEP
                                                . $active . ilTestArchiver::DIR_SEP
                                                . $question_id . ilTestArchiver::DIR_SEP
                                                . 'files' . ilTestArchiver::DIR_SEP;
                                $handle = opendir( $candidate_path );
                                while ($handle !== false && ($file = readdir( $handle )) !== false)
                                {
                                        if ($file != null)
                                        {
                                                $filename_start = 'file_' . $active . '_' . $pass . '_';

                                                if (strpos( $file, $filename_start ) === 0)
                                                {
                                                        $archiver->handInParticipantQuestionMaterial( $active, $pass, $question_id, $file, $file );
                                                }
                                        }
                                }
                        }
                }
                $passdata = $this->object->getTestResult(
                        $active, $pass, false, !$this->getObjectiveOrientedContainer()->isObjectiveOrientedPresentationRequired()
                );
                $overview = $testevaluationgui->getPassListOfAnswers(
                        $passdata, $active, $pass, true, false, false, true, false, $objectivesList, $testResultHeaderLabelBuilder
                );
                $filename = realpath(ilUtil::getWebspaceDir()) . '/assessment/scores-'.$this->object->getId() . '-' . $active . '-' . $pass . '.pdf';
                ilTestPDFGenerator::generatePDF($overview, ilTestPDFGenerator::PDF_OUTPUT_FILE, $filename);
                $archiver->handInTestResult($active, $pass, $filename);
                unlink($filename);
                
                return;
        }
        
        public function redirectBackCmd()
        {
                require_once 'Modules/Test/classes/class.ilTestPassesSelector.php';
                $testPassesSelector = new ilTestPassesSelector($GLOBALS['ilDB'], $this->object);
                $testPassesSelector->setActiveId($this->testSession->getActiveId());
                $testPassesSelector->setLastFinishedPass($this->testSession->getLastFinishedPass());

                if( count($testPassesSelector->getReportablePasses()) )
                {
                        $this->ctrl->redirectByClass("ilTestEvaluationGUI", "outUserResultsOverview");
                }

                $this->backToInfoScreenCmd();
        }
        
        protected function backToInfoScreenCmd()
        {
                $this->ctrl->redirectByClass('ilObjTestGUI', 'redirectToInfoScreen');
        }
        
        /*
        * Presents the final statement of a test
        */
        public function showFinalStatementCmd()
        {
                $template = new ilTemplate("tpl.il_as_tst_final_statement.html", TRUE, TRUE, "Modules/Test");
                $this->ctrl->setParameter($this, "skipfinalstatement", 1);
                $template->setVariable("FORMACTION", $this->ctrl->getFormAction($this, ilTestPlayerCommands::AFTER_TEST_PASS_FINISHED));
                $template->setVariable("FINALSTATEMENT", $this->object->prepareTextareaOutput($this->object->getFinalStatement(), true));
                $template->setVariable("BUTTON_CONTINUE", $this->lng->txt("btn_next"));
                $this->tpl->setVariable($this->getContentBlockName(), $template->get());
        }
        
        public function getKioskHead()
        {
                global $ilUser;
                
                $template = new ilTemplate('tpl.il_as_tst_kiosk_head.html', true, true, 'Modules/Test');
                if ($this->object->getShowKioskModeTitle())
                {
                        $template->setCurrentBlock("kiosk_show_title");
                        $template->setVariable("TEST_TITLE", $this->object->getTitle());
                        $template->parseCurrentBlock();
                }
                if ($this->object->getShowKioskModeParticipant())
                {
                        $template->setCurrentBlock("kiosk_show_participant");
                        $template->setVariable("PARTICIPANT_NAME_TXT", $this->lng->txt("login_as"));
                        $template->setVariable("PARTICIPANT_NAME", $ilUser->getFullname());
                        $template->setVariable("PARTICIPANT_LOGIN", $ilUser->getLogin());
                        $template->setVariable("PARTICIPANT_MATRICULATION", $ilUser->getMatriculation());
                        $template->setVariable("PARTICIPANT_EMAIL", $ilUser->getEmail());
                        $template->parseCurrentBlock();
                }
                if ($this->object->isShowExamIdInTestPassEnabled())
                {
                        $exam_id = ilObjTest::buildExamId(
                                $this->testSession->getActiveId() , $this->testSession->getPass(), $this->object->getId()
                        );
                        
                        $template->setCurrentBlock("kiosk_show_exam_id");
                        $template->setVariable("EXAM_ID_TXT", $this->lng->txt("exam_id"));
                        $template->setVariable( "EXAM_ID", $exam_id);
                        $template->parseCurrentBlock();                 
                }
                return $template->get();
        }

        protected function prepareTestPage($presentationMode, $sequenceElement, $questionId)
        {
                global $ilUser, $ilNavigationHistory;

                $ilNavigationHistory->addItem($this->testSession->getRefId(),
                        $this->ctrl->getLinkTarget($this, ilTestPlayerCommands::RESUME_PLAYER), 'tst'
                );

                $this->initTestPageTemplate();
                $this->populateContentStyleBlock();
                $this->populateSyntaxStyleBlock();

                if ($this->isMaxProcessingTimeReached())
                {
                        $this->maxProcessingTimeReached();
                        return;
                }
                
                if ($this->object->endingTimeReached())
                {
                        $this->endingTimeReached();
                        return;
                }

                if( $this->isOptionalQuestionAnsweringConfirmationRequired($sequenceElement) )
                {
                        $this->ctrl->setParameter($this, "sequence", $sequenceElement);
                        $this->showAnswerOptionalQuestionsConfirmation();
                        return;
                }
                        
                if ($this->object->getKioskMode())
                {
                        $this->populateKioskHead();
                }
                
                $this->tpl->setVariable("TEST_ID", $this->object->getTestId());
                $this->tpl->setVariable("LOGIN", $ilUser->getLogin());
                $this->tpl->setVariable("SEQ_ID", $sequenceElement);
                $this->tpl->setVariable("QUEST_ID", $questionId);
                                
                if ($this->object->getEnableProcessingTime())
                {
                        $this->outProcessingTime($this->testSession->getActiveId());
                }
                
                $this->tpl->setVariable("PAGETITLE", "- " . $this->object->getTitle());
                
                if ($this->object->isShowExamIdInTestPassEnabled() && !$this->object->getKioskMode())
                {
                        $this->tpl->setCurrentBlock('exam_id_footer');
                        $this->tpl->setVariable('EXAM_ID_VAL', ilObjTest::lookupExamId(
                                        $this->testSession->getActiveId(), $this->testSession->getPass(), $this->object->getId()
                        ));
                        $this->tpl->setVariable('EXAM_ID_TXT', $this->lng->txt('exam_id'));
                        $this->tpl->parseCurrentBlock();
                }

                if ($this->object->getListOfQuestions())
                {
                        $this->showSideList($presentationMode, $sequenceElement);
                }
        }
        
        abstract protected function isOptionalQuestionAnsweringConfirmationRequired($sequenceElement);
        
        abstract protected function isShowingPostponeStatusReguired($questionId);

        protected function showQuestionViewable(assQuestionGUI $questionGui, $formAction, $isQuestionWorkedThrough, $instantResponse)
        {
                $questionNavigationGUI = $this->buildReadOnlyStateQuestionNavigationGUI($questionGui->object->getId());
                $questionNavigationGUI->setQuestionWorkedThrough($isQuestionWorkedThrough);
                $questionGui->setNavigationGUI($questionNavigationGUI);
                
// fau: testNav - set answere status in question header
                $questionGui->getQuestionHeaderBlockBuilder()->setQuestionAnswered($isQuestionWorkedThrough);
// fau.

                $answerFeedbackEnabled = (
                        $instantResponse && $this->object->getSpecificAnswerFeedback()
                );

                $solutionoutput = $questionGui->getSolutionOutput(
                        $this->testSession->getActiveId(),      #active_id
                        $this->testSession->getPass(),          #pass
                        false,                                                          #graphical_output
                        false,                                                          #result_output
                        true,                                                           #show_question_only
                        $answerFeedbackEnabled,                         #show_feedback
                        false,                                                          #show_correct_solution
                        false,                                                          #show_manual_scoring
                        true                                                            #show_question_text
                );

                $pageoutput = $questionGui->outQuestionPage(
                        "",
                        $this->isShowingPostponeStatusReguired($questionGui->object->getId()),
                        $this->testSession->getActiveId(),
                        $solutionoutput
                );
                
                $this->tpl->setCurrentBlock('readonly_css_class');
                $this->tpl->touchBlock('readonly_css_class');
                $this->tpl->parseCurrentBlock();

                $this->tpl->setVariable('QUESTION_OUTPUT', $pageoutput);

                $this->tpl->setVariable("FORMACTION", $formAction);
                $this->tpl->setVariable("ENCTYPE", 'enctype="'.$questionGui->getFormEncodingType().'"');
                $this->tpl->setVariable("FORM_TIMESTAMP", time());
        }

        protected function showQuestionEditable(assQuestionGUI $questionGui, $formAction, $isQuestionWorkedThrough, $instantResponse)
        {
                $questionNavigationGUI = $this->buildEditableStateQuestionNavigationGUI(
                        $questionGui->object->getId(), $this->populateCharSelectorIfRequired()
                );
                if( $isQuestionWorkedThrough )
                {
                        $questionNavigationGUI->setDiscardSolutionButtonEnabled(true);
// fau: testNav - set answere status in question header
                        $questionGui->getQuestionHeaderBlockBuilder()->setQuestionAnswered(true);
// fau.
                }
                elseif( $this->object->isPostponingEnabled() )
                {
                        $questionNavigationGUI->setSkipQuestionLinkTarget(
                                $this->ctrl->getLinkTarget($this, ilTestPlayerCommands::SKIP_QUESTION)
                        );
                }
                $questionGui->setNavigationGUI($questionNavigationGUI);

                $isPostponed = $this->isShowingPostponeStatusReguired($questionGui->object->getId());
                
                $answerFeedbackEnabled = (
                        $instantResponse && $this->object->getSpecificAnswerFeedback()
                );

                if( isset($_GET['save_error']) && $_GET['save_error'] == 1 && isset($_SESSION['previouspost']) )
                {
                        $userPostSolution = $_SESSION['previouspost'];
                        unset($_SESSION['previouspost']);
                }
                else
                {
                        $userPostSolution = false;
                }

// fau: testNav - add special checkbox for mc question
                if ($questionGui instanceof assMultipleChoiceGUI)
                {
                        $questionGui->setWithNoneAbove($this->object->getMCScoring());
                        $questionGui->setIsAnswered($isQuestionWorkedThrough);
                }
// fau.
                
                // hey: prevPassSolutions - determine solution pass index and configure gui accordingly
                $qstConfig = $questionGui->object->getTestPresentationConfig();
                if( $qstConfig->isPreviousPassSolutionReuseAllowed() )
                {
                        $passIndex = $this->determineSolutionPassIndex($questionGui); // last pass having solution stored
                        if( $passIndex < $this->testSession->getPass() ) // it's the previous pass if current pass is higher
                        {
                                $qstConfig->setSolutionInitiallyPrefilled(true);
                        }
                }
                else
                {
                        $passIndex = $this->testSession->getPass();
                }
                // hey.
                
                // Answer specific feedback is rendered into the display of the test question with in the concrete question types outQuestionForTest-method.
                // Notation of the params prior to getting rid of this crap in favor of a class
                $questionGui->outQuestionForTest(
                        $formAction,                                                    #form_action
                        $this->testSession->getActiveId(),              #active_id
                        // hey: prevPassSolutions - prepared pass index having no, current or previous solution
                        $passIndex,                                                     #pass
                        // hey.
                        $isPostponed,                                                   #is_postponed
                        $userPostSolution,                                              #user_post_solution
                        $answerFeedbackEnabled                                  #answer_feedback == inline_specific_feedback
                );
                // The display of specific inline feedback and specific feedback in an own block is to honor questions, which
                // have the possibility to embed the specific feedback into their output while maintaining compatibility to
                // questions, which do not have such facilities. E.g. there can be no "specific inline feedback" for essay
                // questions, while the multiple-choice questions do well.


                $this->populateModals();

// fau: testNav - pouplate the new question edit control instead of the deprecated intermediate solution saver
                $this->populateQuestionEditControl($questionGui);
// fau.
        }
        
        // hey: prevPassSolutions - determine solution pass index
        protected function determineSolutionPassIndex(assQuestionGUI $questionGui)
        {
                require_once './Modules/Test/classes/class.ilObjTest.php';
                
                if( ilObjTest::_getUsePreviousAnswers($this->testSession->getActiveId(), true) )
                {
                        $currentSolutionAvailable = $questionGui->object->authorizedOrIntermediateSolutionExists(
                                $this->testSession->getActiveId(), $this->testSession->getPass()
                        );
                        
                        if( !$currentSolutionAvailable )
                        {
                                $previousPass = $questionGui->object->getSolutionMaxPass(
                                        $this->testSession->getActiveId()
                                );
                                
                                $previousSolutionAvailable = $questionGui->object->authorizedSolutionExists(
                                        $this->testSession->getActiveId(), $previousPass
                                );
                                
                                if( $previousSolutionAvailable )
                                {
                                        return $previousPass;
                                }
                        }
                }
                
                return $this->testSession->getPass();
        }
        // hey.

        abstract protected function showQuestionCmd();

        abstract protected function editSolutionCmd();

        abstract protected function submitSolutionCmd();

// fau: testNav - new function to revert probably auto-saved changes and show the last submitted question state
        protected function revertChangesCmd()
        {
                $this->removeIntermediateSolution();
                $this->setAnswerChangedParameter(false);
                $this->ctrl->saveParameter($this, 'sequence');
                $this->ctrl->redirect($this, ilTestPlayerCommands::SHOW_QUESTION);
        }
// fau.

        abstract protected function discardSolutionCmd();
        
        abstract protected function skipQuestionCmd();

        abstract protected function startTestCmd();
        function checkOnlineTestAccess() 
        {
                global $ilUser;
                
                // check if user is invited to participate
                $user = $this->object->getInvitedUsers($ilUser->getId());
                if (!is_array ($user) || count($user)!=1)
                {
                                ilUtil::sendInfo($this->lng->txt("user_not_invited"), true);
                                $this->ctrl->redirectByClass("ilobjtestgui", "backToRepository");
                }
                        
                $user = array_pop($user);
                // check if client ip is set and if current remote addr is equal to stored client-ip                    
                if (strcmp($user["clientip"],"")!=0 && strcmp($user["clientip"],$_SERVER["REMOTE_ADDR"])!=0)
                {
                        ilUtil::sendInfo($this->lng->txt("user_wrong_clientip"), true);
                        $this->ctrl->redirectByClass("ilobjtestgui", "backToRepository");
                }               
        }       

        
        function isTestAccessible() 
        {               
                return  !$this->isNrOfTriesReached()                            
                                and      !$this->isMaxProcessingTimeReached()
                                and  $this->object->startingTimeReached()
                                and  !$this->object->endingTimeReached();
        }

        function isNrOfTriesReached() 
        {
                return $this->object->hasNrOfTriesRestriction() && $this->object->isNrOfTriesReached($this->testSession->getPass());    
        }
        
        function endingTimeReached() 
        {
                ilUtil::sendInfo(sprintf($this->lng->txt("detail_ending_time_reached"), ilDatePresentation::formatDate(new ilDateTime($this->object->getEndingTime(), IL_CAL_UNIX))));
                $this->testSession->increasePass();
                $this->testSession->setLastSequence(0);
                $this->testSession->saveToDb();

                $this->redirectBackCmd();
        }
        
        function maxProcessingTimeReached()
        {
                $this->suspendTestCmd();
        }               

        function confirmSubmitAnswers() 
        {
                $this->tpl->addBlockFile($this->getContentBlockName(), "adm_content", "tpl.il_as_tst_submit_answers_confirm.html", "Modules/Test");
                $this->tpl->setCurrentBlock("adm_content");
                if ($this->object->isTestFinished($this->testSession->getActiveId()))
                {
                        $this->tpl->setCurrentBlock("not_submit_allowed");
                        $this->tpl->setVariable("TEXT_ALREADY_SUBMITTED", $this->lng->txt("tst_already_submitted"));
                        $this->tpl->setVariable("BTN_OK", $this->lng->txt("tst_show_answer_sheet"));
                } else 
                {
                        $this->tpl->setCurrentBlock("submit_allowed");
                        $this->tpl->setVariable("TEXT_CONFIRM_SUBMIT_RESULTS", $this->lng->txt("tst_confirm_submit_answers"));
                        $this->tpl->setVariable("BTN_OK", $this->lng->txt("tst_submit_results"));
                }
                $this->tpl->setVariable("BTN_BACK", $this->lng->txt("back"));           
                $this->tpl->setVariable("FORMACTION", $this->ctrl->getFormAction($this, "finalSubmission"));
                $this->tpl->parseCurrentBlock();
        }
        
        function outProcessingTime($active_id) 
        {
                global $ilUser;

                $starting_time = $this->object->getStartingTimeOfUser($active_id);
                $processing_time = $this->object->getProcessingTimeInSeconds($active_id);
                $processing_time_minutes = floor($processing_time / 60);
                $processing_time_seconds = $processing_time - $processing_time_minutes * 60;
                $str_processing_time = "";
                if ($processing_time_minutes > 0)
                {
                        $str_processing_time = $processing_time_minutes . " " . ($processing_time_minutes == 1 ? $this->lng->txt("minute") : $this->lng->txt("minutes"));
                }
                if ($processing_time_seconds > 0)
                {
                        if (strlen($str_processing_time) > 0) $str_processing_time .= " " . $this->lng->txt("and") . " ";
                        $str_processing_time .= $processing_time_seconds . " " . ($processing_time_seconds == 1 ? $this->lng->txt("second") : $this->lng->txt("seconds"));
                }
                $time_left = $starting_time + $processing_time - time();
                $time_left_minutes = floor($time_left / 60);
                $time_left_seconds = $time_left - $time_left_minutes * 60;
                $str_time_left = "";
                if ($time_left_minutes > 0)
                {
                        $str_time_left = $time_left_minutes . " " . ($time_left_minutes == 1 ? $this->lng->txt("minute") : $this->lng->txt("minutes"));
                }
                if ($time_left < 300)
                {
                        if ($time_left_seconds > 0)
                        {
                                if (strlen($str_time_left) > 0) $str_time_left .= " " . $this->lng->txt("and") . " ";
                                $str_time_left .= $time_left_seconds . " " .  ($time_left_seconds == 1 ? $this->lng->txt("second") : $this->lng->txt("seconds"));
                        }
                }
                $date = getdate($starting_time);
                $formattedStartingTime = ilDatePresentation::formatDate(new ilDateTime($date,IL_CAL_FKT_GETDATE));              
                $datenow = getdate();
                $this->tpl->setCurrentBlock("enableprocessingtime");
                $this->tpl->setVariable("USER_WORKING_TIME", 
                        sprintf(
                                $this->lng->txt("tst_time_already_spent"),
                                $formattedStartingTime,
                                $str_processing_time
                        )
                );
                $this->tpl->setVariable("USER_REMAINING_TIME", sprintf($this->lng->txt("tst_time_already_spent_left"), $str_time_left));
                $this->tpl->parseCurrentBlock();
                $template = new ilTemplate("tpl.workingtime.js.html", TRUE, TRUE, 'Modules/Test');
                $template->setVariable("STRING_MINUTE", $this->lng->txt("minute"));
                $template->setVariable("STRING_MINUTES", $this->lng->txt("minutes"));
                $template->setVariable("STRING_SECOND", $this->lng->txt("second"));
                $template->setVariable("STRING_SECONDS", $this->lng->txt("seconds"));
                $template->setVariable("STRING_TIMELEFT", $this->lng->txt("tst_time_already_spent_left"));
                $template->setVariable("AND", strtolower($this->lng->txt("and")));
                $template->setVariable("YEAR", $date["year"]);
                $template->setVariable("MONTH", $date["mon"]-1);
                $template->setVariable("DAY", $date["mday"]);
                $template->setVariable("HOUR", $date["hours"]);
                $template->setVariable("MINUTE", $date["minutes"]);
                $template->setVariable("SECOND", $date["seconds"]);
                if ($this->object->isEndingTimeEnabled() )
                {
                        $date_time = new ilDateTime($this->object->getEndingTime(), IL_CAL_UNIX);
                        preg_match("/(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})/", $date_time->get(IL_CAL_TIMESTAMP), $matches);
                        $template->setVariable("ENDYEAR", $matches[1]);
                        $template->setVariable("ENDMONTH", $matches[2]-1);
                        $template->setVariable("ENDDAY", $matches[3]);
                        $template->setVariable("ENDHOUR", $matches[4]);
                        $template->setVariable("ENDMINUTE", $matches[5]);
                        $template->setVariable("ENDSECOND", $matches[6]);
                }
                $template->setVariable("YEARNOW", $datenow["year"]);
                $template->setVariable("MONTHNOW", $datenow["mon"]-1);
                $template->setVariable("DAYNOW", $datenow["mday"]);
                $template->setVariable("HOURNOW", $datenow["hours"]);
                $template->setVariable("MINUTENOW", $datenow["minutes"]);
                $template->setVariable("SECONDNOW", $datenow["seconds"]);
                $template->setVariable("PTIME_M", $processing_time_minutes);
                $template->setVariable("PTIME_S", $processing_time_seconds);
                
                $this->tpl->setCurrentBlock("HeadContent");
                $this->tpl->setVariable("CONTENT_BLOCK", $template->get());
                $this->tpl->parseCurrentBlock();
        }

        protected function showSideList($presentationMode, $currentSequenceElement)
        {
                global $ilUser;

                $sideListActive = $ilUser->getPref('side_list_of_questions');

                if($sideListActive)
                {
                        $this->tpl->addCss(
                                ilUtil::getStyleSheetLocation("output", "ta_split.css", "Modules/Test"), "screen"
                        );

                        $questionSummaryData = $this->service->getQuestionSummaryData($this->testSequence, false);

                        require_once 'Modules/Test/classes/class.ilTestQuestionSideListGUI.php';
                        $questionSideListGUI = new ilTestQuestionSideListGUI($this->ctrl, $this->lng);
                        $questionSideListGUI->setTargetGUI($this);
                        $questionSideListGUI->setQuestionSummaryData($questionSummaryData);
                        $questionSideListGUI->setCurrentSequenceElement($currentSequenceElement);
// fau: testNav - set side list presentation mode to "view" to allow navigation when question is in edit mode
                        $questionSideListGUI->setCurrentPresentationMode(ilTestPlayerAbstractGUI::PRESENTATION_MODE_VIEW);
                        $questionSideListGUI->setDisabled(false);
//                      $questionSideListGUI->setCurrentPresentationMode($presentationMode);
//                      $questionSideListGUI->setDisabled($presentationMode == self::PRESENTATION_MODE_EDIT);
// fau.
                        $this->tpl->setVariable('LIST_OF_QUESTIONS', $questionSideListGUI->getHTML());
                }
        }

        abstract protected function isQuestionSummaryFinishTestButtonRequired();
        
        public function outQuestionSummaryCmd($fullpage = true, $contextFinishTest = false, $obligationsNotAnswered = false, $obligationsFilter = false) 
        {
                if( $fullpage )
                {
                        $this->tpl->addBlockFile($this->getContentBlockName(), "adm_content", "tpl.il_as_tst_question_summary.html", "Modules/Test");
                }
                
                if( $obligationsNotAnswered )
                {
                        ilUtil::sendFailure($this->lng->txt('not_all_obligations_answered'));
                }
                
                if( $this->object->getKioskMode() && $fullpage )
                {
                        $head = $this->getKioskHead();
                        if( strlen($head) )
                        {
                                $this->tpl->setCurrentBlock("kiosk_options");
                                $this->tpl->setVariable("KIOSK_HEAD", $head);
                                $this->tpl->parseCurrentBlock();
                        }
                }


                $active_id = $this->testSession->getActiveId();
                $questionSummaryData = $this->service->getQuestionSummaryData($this->testSequence, $obligationsFilter);
                
                $this->ctrl->setParameter($this, "sequence", $_GET["sequence"]);
                
                if( $fullpage )
                {
                        include_once "./Modules/Test/classes/tables/class.ilListOfQuestionsTableGUI.php";
                        $table_gui = new ilListOfQuestionsTableGUI($this, 'showQuestion');
                        
                        $table_gui->setShowPointsEnabled( !$this->object->getTitleOutput() );
                        $table_gui->setShowMarkerEnabled( $this->object->getShowMarker() );
                        $table_gui->setObligationsNotAnswered( $obligationsNotAnswered );
                        $table_gui->setShowObligationsEnabled( $this->object->areObligationsEnabled() );
                        $table_gui->setObligationsFilterEnabled( $obligationsFilter );
                        $table_gui->setFinishTestButtonEnabled($this->isQuestionSummaryFinishTestButtonRequired());

                        $table_gui->init();
                                
                        $table_gui->setData($questionSummaryData);

                        $this->tpl->setVariable('TABLE_LIST_OF_QUESTIONS', $table_gui->getHTML());      
                        
                        if( $this->object->getEnableProcessingTime() )
                        {
                                $this->outProcessingTime($active_id);
                        }
                }
        }
        
        public function outQuestionSummaryWithObligationsInfoCmd()
        {
                return $this->outQuestionSummaryCmd(true, true, true, false);
        }
        
        public function outObligationsOnlySummaryCmd()
        {
                return $this->outQuestionSummaryCmd(true, true, true, true);
        }
        
        function showMaximumAllowedUsersReachedMessage()
        {
                $this->tpl->addBlockFile($this->getContentBlockName(), "adm_content", "tpl.il_as_tst_max_allowed_users_reached.html", "Modules/Test");
                $this->tpl->setCurrentBlock("adm_content");
                $this->tpl->setVariable("MAX_ALLOWED_USERS_MESSAGE", sprintf($this->lng->txt("tst_max_allowed_users_message"), $this->object->getAllowedUsersTimeGap()));
                $this->tpl->setVariable("MAX_ALLOWED_USERS_HEADING", sprintf($this->lng->txt("tst_max_allowed_users_heading"), $this->object->getAllowedUsersTimeGap()));
                $this->tpl->setVariable("CMD_BACK_TO_INFOSCREEN", ilTestPlayerCommands::BACK_TO_INFO_SCREEN);
                $this->tpl->setVariable("TXT_BACK_TO_INFOSCREEN", $this->lng->txt("tst_results_back_introduction"));
                $this->tpl->setVariable("FORMACTION", $this->ctrl->getFormAction($this));
                $this->tpl->parseCurrentBlock();
        }
        
        function backFromFinishingCmd()
        {
                $this->ctrl->redirect($this, ilTestPlayerCommands::SHOW_QUESTION);
        }
        
        function outCorrectSolution()
        {
                $this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_as_tst_correct_solution.html", "Modules/Test");

                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");
                }

                $this->tpl->setCurrentBlock("adm_content");
                $solution = $this->getCorrectSolutionOutput($_GET["evaluation"], $_GET["active_id"], $_GET["pass"]);
                $this->tpl->setVariable("OUTPUT_SOLUTION", $solution);
                $this->tpl->setVariable("TEXT_BACK", $this->lng->txt("back"));
                $this->ctrl->saveParameter($this, "pass");
                $this->ctrl->saveParameter($this, "active_id");
                $this->tpl->setVariable("URL_BACK", $this->ctrl->getLinkTarget($this, "outUserResultsOverview"));
                $this->tpl->parseCurrentBlock();
        }

        function showListOfAnswers($active_id, $pass = NULL, $top_data = "", $bottom_data = "")
        {
                global $ilUser;

                $this->tpl->addBlockFile($this->getContentBlockName(), "adm_content", "tpl.il_as_tst_finish_list_of_answers.html", "Modules/Test");

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

                $counter = 1;
                // output of questions with solutions
                foreach ($result_array as $question_data)
                {
                        $question = $question_data["qid"];
                        if (is_numeric($question))
                        {
                                $this->tpl->setCurrentBlock("printview_question");
                                $question_gui = $this->object->createQuestionGUI("", $question);
                                $template = new ilTemplate("tpl.il_as_qpl_question_printview.html", TRUE, TRUE, "Modules/TestQuestionPool");
                                $template->setVariable("COUNTER_QUESTION", $counter.". ");
                                $template->setVariable("QUESTION_TITLE", $question_gui->object->getTitle());
                                
                                $show_question_only = ($this->object->getShowSolutionAnswersOnly()) ? TRUE : FALSE;
                                $result_output = $question_gui->getSolutionOutput($active_id, $pass, FALSE, FALSE, $show_question_only, $this->object->getShowSolutionFeedback());                              
                                $template->setVariable("SOLUTION_OUTPUT", $result_output);
                                $this->tpl->setVariable("QUESTION_OUTPUT", $template->get());
                                $this->tpl->parseCurrentBlock();
                                $counter ++;
                        }
                }

                $this->tpl->addCss(ilUtil::getStyleSheetLocation("output", "test_print.css", "Modules/Test"), "print");
                if ($this->object->getShowSolutionAnswersOnly())
                {
                        $this->tpl->addCss(ilUtil::getStyleSheetLocation("output", "test_print_hide_content.css", "Modules/Test"), "print");
                }
                if (strlen($top_data))
                {
                        $this->tpl->setCurrentBlock("top_data");
                        $this->tpl->setVariable("TOP_DATA", $top_data);
                        $this->tpl->parseCurrentBlock();
                }
                
                if (strlen($bottom_data))
                {
                        $this->tpl->setCurrentBlock("bottom_data");
                        $this->tpl->setVariable("FORMACTION", $this->ctrl->getFormAction($this));
                        $this->tpl->setVariable("BOTTOM_DATA", $bottom_data);
                        $this->tpl->parseCurrentBlock();
                }
                
                $this->tpl->setCurrentBlock("adm_content");
                $this->tpl->setVariable("TXT_ANSWER_SHEET", $this->lng->txt("tst_list_of_answers"));
                $user_data = $this->getAdditionalUsrDataHtmlAndPopulateWindowTitle($this->testSession, $active_id, TRUE);
                $signature = $this->getResultsSignature();
                $this->tpl->setVariable("USER_DETAILS", $user_data);
                $this->tpl->setVariable("SIGNATURE", $signature);
                $this->tpl->setVariable("TITLE", $this->object->getTitle());
                $this->tpl->setVariable("TXT_TEST_PROLOG", $this->lng->txt("tst_your_answers"));
                $invited_user =& $this->object->getInvitedUsers($ilUser->getId());
                $pagetitle = $this->object->getTitle() . " - " . $this->lng->txt("clientip") . 
                        ": " . $invited_user[$ilUser->getId()]["clientip"] . " - " . 
                        $this->lng->txt("matriculation") . ": " . 
                        $invited_user[$ilUser->getId()]["matriculation"];
                $this->tpl->setVariable("PAGETITLE", $pagetitle);
                $this->tpl->parseCurrentBlock();
        }
        
        public function getContentBlockName()
        {
                if ($this->object->getKioskMode())
                {
                        $this->tpl->setBodyClass("kiosk");
                        $this->tpl->setAddFooter(FALSE);
                        return "CONTENT";
                }
                else
                {
                        return "ADM_CONTENT";
                }
        }

        function outUserResultsOverviewCmd()
        {
                $this->ctrl->redirectByClass(
                        array('ilRepositoryGUI', 'ilObjTestGUI', 'ilTestEvaluationGUI'), "outUserResultsOverview"
                );
        }

        protected function showRequestedHintListCmd()
        {
// fau: testNav - handle intermediate submit for viewing requested hints
                $this->handleIntermediateSubmit();
// fau.

                $this->ctrl->setParameter($this, 'pmode', self::PRESENTATION_MODE_EDIT);
                
                require_once 'Modules/TestQuestionPool/classes/class.ilAssQuestionHintRequestGUI.php';
                $this->ctrl->redirectByClass('ilAssQuestionHintRequestGUI', ilAssQuestionHintRequestGUI::CMD_SHOW_LIST);
        }
        
        protected function confirmHintRequestCmd()
        {
// fau: testNav - handle intermediate submit for confirming hint requests
                $this->handleIntermediateSubmit();
// fau.

                $this->ctrl->setParameter($this, 'pmode', self::PRESENTATION_MODE_EDIT);

                require_once 'Modules/TestQuestionPool/classes/class.ilAssQuestionHintRequestGUI.php';
                $this->ctrl->redirectByClass('ilAssQuestionHintRequestGUI', ilAssQuestionHintRequestGUI::CMD_CONFIRM_REQUEST);
        }
        
        abstract protected function isFirstQuestionInSequence($sequenceElement);
        
        abstract protected function isLastQuestionInSequence($sequenceElement);
        
        
        abstract protected function handleQuestionActionCmd();
        
        abstract protected function showInstantResponseCmd();
        
        abstract protected function nextQuestionCmd();
        
        abstract protected function previousQuestionCmd();
        
        protected function prepareSummaryPage()
        {
                $this->tpl->addBlockFile(
                        $this->getContentBlockName(), 'adm_content', 'tpl.il_as_tst_question_summary.html', 'Modules/Test'
                );

                if ($this->object->getKioskMode())
                {
                        $this->populateKioskHead();
                }
        }
        
        protected function initTestPageTemplate()
        {
                $this->tpl->addBlockFile(
                        $this->getContentBlockName(), 'adm_content', 'tpl.il_as_tst_output.html', 'Modules/Test'
                );
        }
        
        protected function populateKioskHead()
        {
                ilUtil::sendInfo(); // ???
                
                $head = $this->getKioskHead();
                
                if (strlen($head))
                {
                        $this->tpl->setCurrentBlock("kiosk_options");
                        $this->tpl->setVariable("KIOSK_HEAD", $head);
                        $this->tpl->parseCurrentBlock();
                }
        }

        protected function handlePasswordProtectionRedirect()
        {
                if( $this->ctrl->getNextClass() == 'iltestpasswordprotectiongui' )
                {
                        return;
                }
                
                if( !$this->passwordChecker->isPasswordProtectionPageRedirectRequired() )
                {
                        return;
                }
                
                $this->ctrl->setParameter($this, 'lock', $this->getLockParameter());
                
                $nextCommand = $this->ctrl->getCmdClass().'::'.$this->ctrl->getCmd();
                $this->ctrl->setParameterByClass('ilTestPasswordProtectionGUI', 'nextCommand', $nextCommand);
                $this->ctrl->redirectByClass('ilTestPasswordProtectionGUI', 'showPasswordForm');
        }

        protected function isParticipantsAnswerFixed($questionId)
        {
                if( !$this->object->isInstantFeedbackAnswerFixationEnabled() )
                {
                        return false;
                }

                if( !$this->testSequence->isQuestionChecked($questionId) )
                {
                        return false;
                }

                return true;
        }

        protected function getIntroductionPageButtonLabel()
        {
                return $this->lng->txt("save_introduction");
        }

        protected function initAssessmentSettings()
        {
                $this->assSettings = new ilSetting('assessment');
        }

        protected function handleSkillTriggering(ilTestSession $testSession)
        {
                $questionList = $this->buildTestPassQuestionList();
                $questionList->load();

                $testResults = $this->object->getTestResult($testSession->getActiveId(), $testSession->getPass(), true);
                
                require_once 'Modules/Test/classes/class.ilTestSkillEvaluation.php';
                $skillEvaluation = new ilTestSkillEvaluation($this->db, $this->object->getTestId(), $this->object->getRefId());

                $skillEvaluation->setUserId($testSession->getUserId());
                $skillEvaluation->setActiveId($testSession->getActiveId());
                $skillEvaluation->setPass($testSession->getPass());
                
                $skillEvaluation->setNumRequiredBookingsForSkillTriggering($this->assSettings->get(
                        'ass_skl_trig_num_answ_barrier', ilObjAssessmentFolder::DEFAULT_SKL_TRIG_NUM_ANSWERS_BARRIER
                ));


                $skillEvaluation->init($questionList);
                $skillEvaluation->evaluate($testResults);
                
                $skillEvaluation->handleSkillTriggering();
        }
        
        abstract protected function buildTestPassQuestionList();
        
        protected function showAnswerOptionalQuestionsConfirmation()
        {
                require_once 'Modules/Test/classes/confirmations/class.ilTestAnswerOptionalQuestionsConfirmationGUI.php';
                $confirmation = new ilTestAnswerOptionalQuestionsConfirmationGUI($this->lng);

                $confirmation->setFormAction($this->ctrl->getFormAction($this));
                $confirmation->setCancelCmd('cancelAnswerOptionalQuestions');
                $confirmation->setConfirmCmd('confirmAnswerOptionalQuestions');

                $confirmation->build($this->object->isFixedTest());
                
                $this->populateHelperGuiContent($confirmation);
        }
        
        protected function confirmAnswerOptionalQuestionsCmd()
        {
                $this->testSequence->setAnsweringOptionalQuestionsConfirmed(true);
                $this->testSequence->saveToDb();
                
                $this->ctrl->setParameter($this, 'activecommand', 'gotoquestion');
                $this->ctrl->redirect($this, 'redirectQuestion');
        }

        protected function cancelAnswerOptionalQuestionsCmd()
        {
                if( $this->object->getListOfQuestions() )
                {
                        $this->ctrl->setParameter($this, 'activecommand', 'summary');
                }
                else
                {
                        $this->ctrl->setParameter($this, 'activecommand', 'previous');
                }

                $this->ctrl->redirect($this, 'redirectQuestion');
        }

        protected function populateHelperGuiContent($helperGui)
        {
                if($this->object->getKioskMode())
                {
                        $this->tpl->addBlockfile($this->getContentBlockName(), 'content', "tpl.il_as_tst_kiosk_mode_content.html", "Modules/Test");
                        $this->tpl->setContent($this->ctrl->getHTML($helperGui));
                }
                else
                {
                        $this->tpl->setVariable($this->getContentBlockName(), $this->ctrl->getHTML($helperGui));
                }
        }
        
        protected function populateCharSelectorIfRequired()
        {
                global $ilSetting;
                
                if ($ilSetting->get('char_selector_availability') > 0)
                {
                        require_once 'Services/UIComponent/CharSelector/classes/class.ilCharSelectorGUI.php';
                        $char_selector = ilCharSelectorGUI::_getCurrentGUI($this->object);
                        if ($char_selector->getConfig()->getAvailability() == ilCharSelectorConfig::ENABLED)
                        {
                                $char_selector->addToPage();
                                $this->tpl->setCurrentBlock('char_selector');
                                $this->tpl->setVariable("CHAR_SELECTOR_TEMPLATE", $char_selector->getSelectorHtml());
                                $this->tpl->parseCurrentBlock();
                                
                                return true;
                        }
                }
                
                return false;
        }
        
        protected function getTestNavigationToolbarGUI()
        {
                global $ilUser;
                
                require_once 'Modules/Test/classes/class.ilTestNavigationToolbarGUI.php';
                $navigationToolbarGUI = new ilTestNavigationToolbarGUI($this->ctrl, $this->lng, $this);
                
                $navigationToolbarGUI->setSuspendTestButtonEnabled($this->object->getShowCancel());
                $navigationToolbarGUI->setQuestionTreeButtonEnabled($this->object->getListOfQuestions());
                $navigationToolbarGUI->setQuestionTreeVisible($ilUser->getPref('side_list_of_questions'));
                $navigationToolbarGUI->setQuestionListButtonEnabled($this->object->getListOfQuestions());
                $navigationToolbarGUI->setFinishTestCommand($this->getFinishTestCommand());
                
                return $navigationToolbarGUI;
        }

        protected function buildReadOnlyStateQuestionNavigationGUI($questionId)
        {
                require_once 'Modules/Test/classes/class.ilTestQuestionNavigationGUI.php';
                $navigationGUI = new ilTestQuestionNavigationGUI($this->lng);
                
                if( !$this->isParticipantsAnswerFixed($questionId) )
                {
                        $navigationGUI->setEditSolutionCommand(ilTestPlayerCommands::EDIT_SOLUTION);
                }

                if($this->object->getShowMarker())
                {
                        include_once "./Modules/Test/classes/class.ilObjTest.php";
                        $solved_array = ilObjTest::_getSolvedQuestions($this->testSession->getActiveId(), $questionId);
                        $solved = 0;

                        if(count($solved_array) > 0)
                        {
                                $solved = array_pop($solved_array);
                                $solved = $solved["solved"];
                        }
// fau: testNav - change question mark command to link target
                        if($solved == 1)
                        {
                                $navigationGUI->setQuestionMarkLinkTarget($this->ctrl->getLinkTarget($this, ilTestPlayerCommands::UNMARK_QUESTION));
                                $navigationGUI->setQuestionMarked(true);
                        }
                        else
                        {
                                $navigationGUI->setQuestionMarkLinkTarget($this->ctrl->getLinkTarget($this, ilTestPlayerCommands::MARK_QUESTION));
                                $navigationGUI->setQuestionMarked(false);
                        }
                }
// fau.

                return $navigationGUI;
        }
        
        protected function buildEditableStateQuestionNavigationGUI($questionId, $charSelectorAvailable)
        {
                require_once 'Modules/Test/classes/class.ilTestQuestionNavigationGUI.php';
                $navigationGUI = new ilTestQuestionNavigationGUI($this->lng);
                
                if( $this->object->isForceInstantFeedbackEnabled() )
                {
                        $navigationGUI->setSubmitSolutionCommand(ilTestPlayerCommands::SUBMIT_SOLUTION);
                }
                else
                {
// fau: testNav - use simple "submitSolution" button instead of "submitSolutionAndNext"
                        $navigationGUI->setSubmitSolutionCommand(ilTestPlayerCommands::SUBMIT_SOLUTION);
// fau.
                }
                
// fau: testNav - add a 'revert changes' link for editable question
                $navigationGUI->setRevertChangesLinkTarget($this->ctrl->getLinkTarget($this, ilTestPlayerCommands::REVERT_CHANGES));
// fau.


                // feedback
                switch( 1 )
                {
                        case $this->object->getSpecificAnswerFeedback():
                        case $this->object->getGenericAnswerFeedback():
                        case $this->object->getAnswerFeedbackPoints():
                        case $this->object->getInstantFeedbackSolution():

                                $navigationGUI->setAnswerFreezingEnabled($this->object->isInstantFeedbackAnswerFixationEnabled());
                                
                                if( $this->object->isForceInstantFeedbackEnabled() )
                                {
                                        $navigationGUI->setForceInstantResponseEnabled(true);
                                        $navigationGUI->setInstantFeedbackCommand(ilTestPlayerCommands::SUBMIT_SOLUTION);
                                }
                                else
                                {
                                        $navigationGUI->setInstantFeedbackCommand(ilTestPlayerCommands::SHOW_INSTANT_RESPONSE);
                                }
                }

                // hints
                if( $this->object->isOfferingQuestionHintsEnabled() )
                {
                        $activeId = $this->testSession->getActiveId();
                        $pass = $this->testSession->getPass();

                        require_once 'Modules/TestQuestionPool/classes/class.ilAssQuestionHintTracking.php';
                        $questionHintTracking = new ilAssQuestionHintTracking($questionId, $activeId, $pass);

                        if( $questionHintTracking->requestsPossible() )
                        {
                                $navigationGUI->setRequestHintCommand(ilTestPlayerCommands::CONFIRM_HINT_REQUEST);
                        }

                        if( $questionHintTracking->requestsExist() )
                        {
                                $navigationGUI->setShowHintsCommand(ilTestPlayerCommands::SHOW_REQUESTED_HINTS_LIST);
                        }
                }

                $navigationGUI->setCharSelectorEnabled($charSelectorAvailable);

                if($this->object->getShowMarker())
                {
                        include_once "./Modules/Test/classes/class.ilObjTest.php";
                        $solved_array = ilObjTest::_getSolvedQuestions($this->testSession->getActiveId(), $questionId);
                        $solved = 0;

                        if(count($solved_array) > 0)
                        {
                                $solved = array_pop($solved_array);
                                $solved = $solved["solved"];
                        }

// fau: testNav - change question mark command to link target
                        if($solved == 1)
                        {
                                $navigationGUI->setQuestionMarkLinkTarget($this->ctrl->getLinkTarget($this, ilTestPlayerCommands::UNMARK_QUESTION_SAVE));
                                $navigationGUI->setQuestionMarked(true);
                        }
                        else
                        {
                                $navigationGUI->setQuestionMarkLinkTarget($this->ctrl->getLinkTarget($this, ilTestPlayerCommands::MARK_QUESTION_SAVE));
                                $navigationGUI->setQuestionMarked(false);
                        }
                }
// fau.
                return $navigationGUI;
        }

        protected function getFinishTestCommand()
        {
                if( !$this->object->getListOfQuestionsEnd() )
                {
                        return 'finishTest';
                }
                
                if( $this->object->areObligationsEnabled() )
                {
                        $allObligationsAnswered = ilObjTest::allObligationsAnswered(
                                $this->testSession->getTestId(), $this->testSession->getActiveId(), $this->testSession->getPass()
                        );
                        
                        if( !$allObligationsAnswered )
                        {
                                return 'outQuestionSummaryWithObligationsInfo';
                        }
                }

                return 'outQuestionSummary';
        }

// fau: testNav - populateIntermediateSolutionSaver is obsolete and can be deletd.
//      /**
//       * @param assQuestionGUI $questionGui
//       */
//      protected function populateIntermediateSolutionSaver(assQuestionGUI $questionGui)
//      {
//              $this->tpl->addJavaScript(ilUtil::getJSLocation("autosave.js", "Modules/Test"));
//
//              $this->tpl->setVariable("AUTOSAVE_URL", $this->ctrl->getFormAction(
//                      $this, ilTestPlayerCommands::AUTO_SAVE, "", true
//              ));
//
//              if( $questionGui->isAutosaveable() && $this->object->getAutosave() )
//              {
//                      $formAction = $this->ctrl->getLinkTarget($this, ilTestPlayerCommands::AUTO_SAVE, '', false, false);
//
//                      $this->tpl->touchBlock('autosave');
//                      $this->tpl->setVariable("AUTOSAVEFORMACTION", $formAction);
//                      $this->tpl->setVariable("AUTOSAVEINTERVAL", $this->object->getAutosaveIval());
//              }
//      }
// fau.

// fau: testNav - new function populateInstantResponseModal()
        protected function populateInstantResponseModal(assQuestionGUI $questionGui, $navUrl)
        {
                $questionGui->setNavigationGUI(null);
                $questionGui->getQuestionHeaderBlockBuilder()->setQuestionAnswered(true);

                $answerFeedbackEnabled = $this->object->getSpecificAnswerFeedback();

                $solutionoutput = $questionGui->getSolutionOutput(
                        $this->testSession->getActiveId(),      #active_id
                        $this->testSession->getPass(),          #pass
                        false,                                                          #graphical_output
                        false,                                                          #result_output
                        true,                                                           #show_question_only
                        $answerFeedbackEnabled,                         #show_feedback
                        false,                                                          #show_correct_solution
                        false,                                                          #show_manual_scoring
                        true                                                            #show_question_text
                );

                $pageoutput = $questionGui->outQuestionPage(
                        "",
                        $this->isShowingPostponeStatusReguired($questionGui->object->getId()),
                        $this->testSession->getActiveId(),
                        $solutionoutput
                );

                $tpl = new ilTemplate('tpl.tst_player_response_modal.html', true, true, 'Modules/Test');

                // populate the instant response blocks in the
                $saved_tpl = $this->tpl;
                $this->tpl = $tpl;
                $this->populateInstantResponseBlocks($questionGui, true);
                $this->tpl = $saved_tpl;

                $tpl->setVariable('QUESTION_OUTPUT', $pageoutput);

                $button = ilLinkButton::getInstance();
                $button->setId('tst_confirm_feedback');
                $button->setUrl($navUrl);
                $button->setCaption('proceed');
                $button->setPrimary(true);
                $tpl->setVariable('BUTTON', $button->render());


                require_once('Services/UIComponent/Modal/classes/class.ilModalGUI.php');
                $modal = ilModalGUI::getInstance();
                $modal->setType(ilModalGUI::TYPE_LARGE);
                $modal->setId('tst_question_feedback_modal');
                $modal->setHeading($this->lng->txt('tst_instant_feedback'));
                $modal->setBody($tpl->get());

                $this->tpl->addOnLoadCode("$('#tst_question_feedback_modal').modal('show');");
                $this->tpl->setVariable('INSTANT_RESPONSE_MODAL', $modal->getHTML());
        }
// fau;


        protected function populateInstantResponseBlocks(assQuestionGUI $questionGui, $authorizedSolution)
        {
                // This controls if the solution should be shown.
                // It gets the parameter "Scoring and Results" -> "Instant Feedback" -> "Show Solutions"                        
                if($this->object->getInstantFeedbackSolution())
                {
                        $show_question_inline_score = $this->determineInlineScoreDisplay();

                        // Notation of the params prior to getting rid of this crap in favor of a class
                        $solutionoutput = $questionGui->getSolutionOutput($this->testSession->getActiveId(),    #active_id
                                NULL,                                                #pass
                                FALSE,                                                #graphical_output
                                $show_question_inline_score,                        #result_output
                                FALSE,                                                #show_question_only
                                FALSE,                                                #show_feedback
                                TRUE,                                                #show_correct_solution
                                FALSE,                                                #show_manual_scoring
                                FALSE                                                #show_question_text
                        );
                        $this->populateSolutionBlock($solutionoutput);
                }
                
                $reachedPoints = $questionGui->object->getAdjustedReachedPoints(
                        $this->testSession->getActiveId(), NULL, $authorizedSolution
                );
                
                $maxPoints = $questionGui->object->getMaximumPoints();
                
                $solutionCorrect = ($reachedPoints == $maxPoints);
                
                // This controls if the score should be shown.
                // It gets the parameter "Scoring and Results" -> "Instant Feedback" -> "Show Results (Only Points)"                            
                if($this->object->getAnswerFeedbackPoints())
                {
                        $this->populateScoreBlock($reachedPoints, $maxPoints);
                }

                // This controls if the generic feedback should be shown.
                // It gets the parameter "Scoring and Results" -> "Instant Feedback" -> "Show Solutions"                                
                if($this->object->getGenericAnswerFeedback())
                {
                        $this->populateGenericFeedbackBlock($questionGui, $solutionCorrect);
                }

                // This controls if the specific feedback should be shown.
                // It gets the parameter "Scoring and Results" -> "Instant Feedback" -> "Show Answer-Specific Feedback"
                if($this->object->getSpecificAnswerFeedback())
                {
                        $this->populateSpecificFeedbackBlock($questionGui);
                }
        }
        
        protected function getCurrentSequenceElement()
        {
                if( $this->getSequenceElementParameter() )
                {
                        return $this->getSequenceElementParameter();
                }

                return $this->testSession->getLastSequence();
        }
        
        protected function resetSequenceElementParameter()
        {
                unset($_GET['sequence']);
                $this->ctrl->setParameter($this, 'sequence', null);
        }

        protected function getSequenceElementParameter()
        {
                if( isset($_GET['sequence']) )
                {
                        return $_GET['sequence'];
                }

                return null;
        }

        protected function getPresentationModeParameter()
        {
                if( isset($_GET['pmode']) )
                {
                        return $_GET['pmode'];
                }

                return null;
        }

        protected function getInstantResponseParameter()
        {
                if( isset($_GET['instresp']) )
                {
                        return $_GET['instresp'];
                }

                return null;
        }
        
        protected function getNextCommandParameter()
        {
                if( isset($_POST['nextcmd']) && strlen($_POST['nextcmd']) )
                {
                        return $_POST['nextcmd'];
                }

                return null;
        }

        protected function getNextSequenceParameter()
        {
                if( isset($_POST['nextseq']) && is_numeric($_POST['nextseq']) )
                {
                        return (int)$_POST['nextseq'];
                }

                return null;
        }

// fau: testNav - get the navigation url set by a submit from ilTestPlayerNavigationControl.js
        protected function getNavigationUrlParameter()
        {
                if (isset($_POST['test_player_navigation_url'])) {
                        return $_POST['test_player_navigation_url'];
                }
                return null;
        }
// fau.

// fau: testNav - get set and check the 'answer_changed' url parameter
        protected function getAnswerChangedParameter()
        {
                return !empty($_GET['test_answer_changed']);
        }

        protected function setAnswerChangedParameter($changed = true)
        {
                $this->ctrl->setParameter($this, 'test_answer_changed', $changed ? '1' : '0');
        }


        protected function handleIntermediateSubmit()
        {
                if ($this->getAnswerChangedParameter())
                {
                        $this->saveQuestionSolution(false);
                }
                else
                {
                        $this->removeIntermediateSolution();
                }
                $this->setAnswerChangedParameter($this->getAnswerChangedParameter());
        }
// fau.

// fau: testNav - save the switch to prevent the navigation confirmation
        protected function saveNavigationPreventConfirmation()
        {
                if (!empty($_POST['save_on_navigation_prevent_confirmation']))
                {
                        $_SESSION['save_on_navigation_prevent_confirmation'] = true;
                }
        }
// fau.

        private $cachedQuestionGuis = array();

        protected function getQuestionGuiInstance($questionId, $fromCache = true)
        {
                global $tpl;
                
                if( !$fromCache || !isset($this->cachedQuestionGuis[$questionId]) )
                {
                        $questionGui = $this->object->createQuestionGUI("", $questionId);
                        $questionGui->setTargetGui($this);
                        $questionGui->setPresentationContext(assQuestionGUI::PRESENTATION_CONTEXT_TEST);
                        $questionGui->object->setObligationsToBeConsidered($this->object->areObligationsEnabled());
                        $questionGui->populateJavascriptFilesRequiredForWorkForm($tpl);
                        $questionGui->object->setOutputType(OUTPUT_JAVASCRIPT);
                        $questionGui->object->setShuffler($this->buildQuestionAnswerShuffler($questionId));
                        
                        // hey: prevPassSolutions - determine solution pass index and configure gui accordingly
                        $this->initTestQuestionConfig($questionGui->object);
                        // hey.
                        
                        $this->cachedQuestionGuis[$questionId] = $questionGui;
                }
                
                return $this->cachedQuestionGuis[$questionId];
        }

        private $cachedQuestionObjects = array();
        
        protected function getQuestionInstance($questionId, $fromCache = true)
        {
                global $ilDB, $ilUser;
                
                if( !$fromCache || !isset($this->cachedQuestionObjects[$questionId]) )
                {
                        $questionOBJ = assQuestion::_instantiateQuestion($questionId);

                        $assSettings = new ilSetting('assessment');
                        require_once 'Modules/TestQuestionPool/classes/class.ilAssQuestionProcessLockerFactory.php';
                        $processLockerFactory = new ilAssQuestionProcessLockerFactory($assSettings, $ilDB);
                        $processLockerFactory->setQuestionId($questionOBJ->getId());
                        $processLockerFactory->setUserId($ilUser->getId());
                        include_once ("./Modules/Test/classes/class.ilObjAssessmentFolder.php");
                        $processLockerFactory->setAssessmentLogEnabled(ilObjAssessmentFolder::_enabledAssessmentLogging());
                        $questionOBJ->setProcessLocker($processLockerFactory->getLocker());

                        $questionOBJ->setObligationsToBeConsidered($this->object->areObligationsEnabled());
                        $questionOBJ->setOutputType(OUTPUT_JAVASCRIPT);

                        // hey: prevPassSolutions - determine solution pass index and configure gui accordingly
                        $this->initTestQuestionConfig($questionOBJ);
                        // hey.
                        
                        $this->cachedQuestionObjects[$questionId] = $questionOBJ;
                }
                
                return $this->cachedQuestionObjects[$questionId];
        }

        // hey: prevPassSolutions - determine solution pass index and configure gui accordingly
        protected function initTestQuestionConfig(assQuestion $questionOBJ)
        {
                $questionOBJ->getTestPresentationConfig()->setPreviousPassSolutionReuseAllowed(
                        $this->object->isPreviousSolutionReuseEnabled( $this->testSession->getActiveId() )
                );
        }
        // hey.
        
        protected function buildQuestionAnswerShuffler($questionId)
        {
                require_once 'Services/Randomization/classes/class.ilArrayElementShuffler.php';
                $shuffler = new ilArrayElementShuffler();
                
                $fixedSeed = $this->buildFixedShufflerSeed($questionId);
                $shuffler->setSeed($fixedSeed);
                
                return $shuffler;
        }

        protected function handleTearsAndAngerQuestionIsNull($questionId, $sequenceElement)
        {
                global $ilLog;

                $ilLog->write("INV SEQ:"
                        ."active={$this->testSession->getActiveId()} "
                        ."qId=$questionId seq=$sequenceElement "
                        . serialize($this->testSequence)
                );

                $ilLog->logStack('INV SEQ');

                $this->ctrl->setParameter($this, 'sequence', $this->testSequence->getFirstSequence());
                $this->ctrl->redirect($this, ilTestPlayerCommands::SHOW_QUESTION);
        }

        protected function populateMessageContent($contentHTML)
        {
                if($this->object->getKioskMode())
                {
                        $this->tpl->addBlockfile($this->getContentBlockName(), 'content', "tpl.il_as_tst_kiosk_mode_content.html", "Modules/Test");
                        $this->tpl->setContent($contentHTML);
                }
                else
                {
                        $this->tpl->setVariable($this->getContentBlockName(), $contentHTML);
                }
        }
        
        protected function populateModals()
        {
                require_once 'Services/UIComponent/Button/classes/class.ilSubmitButton.php';
                require_once 'Services/UIComponent/Button/classes/class.ilLinkButton.php';
                require_once 'Services/UIComponent/Modal/classes/class.ilModalGUI.php';

                $this->populateDiscardSolutionModal();
// fau: testNav - populateNavWhenChangedModal instead of populateNavWhileEditModal
                $this->populateNavWhenChangedModal();
// fau.

                if( $this->object->getKioskMode() )
                {
                        $this->tpl->addJavaScript('Services/UICore/lib/bootstrap-3.2.0/dist/js/bootstrap.min.js', true);
                }
        }
        
        protected function populateDiscardSolutionModal()
        {
                $tpl = new ilTemplate('tpl.tst_player_confirmation_modal.html', true, true, 'Modules/Test');
                
                $tpl->setVariable('CONFIRMATION_TEXT', $this->lng->txt('discard_answer_confirmation'));

                $button = ilSubmitButton::getInstance();
                $button->setCommand(ilTestPlayerCommands::DISCARD_SOLUTION);
                $button->setCaption('discard_answer');
                $tpl->setCurrentBlock('buttons');
                $tpl->setVariable('BUTTON', $button->render());
                $tpl->parseCurrentBlock();

                $button = ilLinkButton::getInstance();
                $button->setId('tst_cancel_discard_button');
                $button->setCaption('cancel');
                $button->setPrimary(true);
                $tpl->setCurrentBlock('buttons');
                $tpl->setVariable('BUTTON', $button->render());
                $tpl->parseCurrentBlock();
                
                $modal = ilModalGUI::getInstance();
                $modal->setId('tst_discard_solution_modal');
                $modal->setHeading($this->lng->txt('discard_answer'));
                $modal->setBody($tpl->get());
                
                $this->tpl->setCurrentBlock('discard_solution_modal');
                $this->tpl->setVariable('DISCARD_SOLUTION_MODAL', $modal->getHTML());
                $this->tpl->parseCurrentBlock();
                
// fau: testNav - the discard solution modal is now handled by ilTestPlayerNavigationControl.js
//              $this->tpl->addJavaScript('Modules/Test/js/ilTestPlayerDiscardSolutionModal.js', true);
// fau.
        }

// fau: testNav - populateNavWhileEditModal is obsolete and can be deleted.
//      protected function populateNavWhileEditModal()
//      {
//              require_once 'Services/Form/classes/class.ilFormPropertyGUI.php';
//              require_once 'Services/Form/classes/class.ilHiddenInputGUI.php';
//
//              $tpl = new ilTemplate('tpl.tst_player_confirmation_modal.html', true, true, 'Modules/Test');
//
//              $tpl->setVariable('CONFIRMATION_TEXT', $this->lng->txt('tst_nav_while_edit_modal_text'));
//
//              $button = ilSubmitButton::getInstance();
//              $button->setCommand(ilTestPlayerCommands::SUBMIT_SOLUTION);
//              $button->setCaption('tst_nav_while_edit_modal_save_btn');
//              $button->setPrimary(true);
//              $tpl->setCurrentBlock('buttons');
//              $tpl->setVariable('BUTTON', $button->render());
//              $tpl->parseCurrentBlock();
//
//              foreach(array('nextcmd', 'nextseq') as $hiddenPostVar)
//              {
//                      $nextCmdInp = new ilHiddenInputGUI($hiddenPostVar);
//                      $nextCmdInp->setValue('');
//                      $tpl->setCurrentBlock('hidden_inputs');
//                      $tpl->setVariable('HIDDEN_INPUT', $nextCmdInp->getToolbarHTML());
//                      $tpl->parseCurrentBlock();
//              }
//
//              $button = ilLinkButton::getInstance();
//              $this->ctrl->setParameter($this, 'pmode', self::PRESENTATION_MODE_VIEW);
//              $button->setId('nextCmdLink');
//              $button->setUrl('#');
//              $this->ctrl->setParameter($this, 'pmode', $this->getPresentationModeParameter());
//              $button->setCaption('tst_nav_while_edit_modal_nosave_btn');
//              $tpl->setCurrentBlock('buttons');
//              $tpl->setVariable('BUTTON', $button->render());
//              $tpl->parseCurrentBlock();
//
//              $button = ilLinkButton::getInstance();
//              $button->setId('tst_cancel_nav_while_edit_button');
//              $button->setCaption('tst_nav_while_edit_modal_cancel_btn');
//              $tpl->setCurrentBlock('buttons');
//              $tpl->setVariable('BUTTON', $button->render());
//              $tpl->parseCurrentBlock();
//
//              $modal = ilModalGUI::getInstance();
//              $modal->setId('tst_nav_while_edit_modal');
//              $modal->setHeading($this->lng->txt('tst_nav_while_edit_modal_header'));
//              $modal->setBody($tpl->get());
//
//              $this->tpl->setCurrentBlock('nav_while_edit_modal');
//              $this->tpl->setVariable('NAV_WHILE_EDIT_MODAL', $modal->getHTML());
//              $this->tpl->parseCurrentBlock();
//
//              $this->tpl->addJavaScript('Modules/Test/js/ilTestPlayerNavWhileEditModal.js', true);
//      }
// fau.

// fau: testNav - new function populateNavWhenChangedModal
        protected function populateNavWhenChangedModal()
        {
                if (!empty($_SESSION['save_on_navigation_prevent_confirmation']))
                {
                        return;
                }

                $tpl = new ilTemplate('tpl.tst_player_confirmation_modal.html', true, true, 'Modules/Test');

                if ($this->object->isInstantFeedbackAnswerFixationEnabled() && $this->object->isForceInstantFeedbackEnabled())
                {
                        $text =  $this->lng->txt('save_on_navigation_locked_confirmation');
                }
                else
                {
                        $text =  $this->lng->txt('save_on_navigation_confirmation');
                }
                if ($this->object->isForceInstantFeedbackEnabled())
                {
                        $text .= " ". $this->lng->txt('save_on_navigation_forced_feedback_hint');
                }
                $tpl->setVariable('CONFIRMATION_TEXT', $text);


                $button = ilLinkButton::getInstance();
                $button->setId('tst_save_on_navigation_button');
                $button->setUrl('#');
                $button->setCaption('tst_save_and_proceed');
                $button->setPrimary(true);
                $tpl->setCurrentBlock('buttons');
                $tpl->setVariable('BUTTON', $button->render());
                $tpl->parseCurrentBlock();

                $button = ilLinkButton::getInstance();
                $button->setId('tst_cancel_on_navigation_button');
                $button->setUrl('#');
                $button->setCaption('cancel');
                $button->setPrimary(false);
                $tpl->setCurrentBlock('buttons');
                $tpl->setVariable('BUTTON', $button->render());
                $tpl->parseCurrentBlock();

                $tpl->setCurrentBlock('checkbox');
                $tpl->setVariable('CONFIRMATION_CHECKBOX_NAME','save_on_navigation_prevent_confirmation');
                $tpl->setVariable('CONFIRMATION_CHECKBOX_LABEL',$this->lng->txt('save_on_navigation_prevent_confirmation'));
                $tpl->parseCurrentBlock();

                $modal = ilModalGUI::getInstance();
                $modal->setId('tst_save_on_navigation_modal');
                $modal->setHeading($this->lng->txt('save_on_navigation'));
                $modal->setBody($tpl->get());

                $this->tpl->setCurrentBlock('nav_while_edit_modal');
                $this->tpl->setVariable('NAV_WHILE_EDIT_MODAL', $modal->getHTML());
                $this->tpl->parseCurrentBlock();
        }
// fau.

// fau: testNav - new function populateQuestionEditControl
        protected function populateQuestionEditControl($questionGUI)
        {
                // configuration for ilTestPlayerQuestionEditControl.js
                $config = array();

                // set the initial state of the question
                $state = $questionGUI->object->lookupForExistingSolutions($this->testSession->getActiveId(), $this->testSession->getPass());
                $config['isAnswered'] = $state['authorized'];
                $config['isAnswerChanged'] = $state['intermediate'] || $this->getAnswerChangedParameter();

                // set  url to which the for should be submitted when the working time is over
                // don't use asynch url because the form is submitted directly
                // but use simple '&' because url is copied by javascript into the form action
                $config['saveOnTimeReachedUrl'] = str_replace('&amp;','&', $this->ctrl->getFormAction($this, ilTestPlayerCommands::AUTO_SAVE));

                // enable the auto saving function
                // the autosave url is asynch because it will be used by an ajax request
                if( $questionGUI->isAutosaveable() && $this->object->getAutosave() )
                {
                        $config['autosaveUrl'] = $this->ctrl->getLinkTarget($this, ilTestPlayerCommands::AUTO_SAVE, '', true);
                        $config['autosaveInterval'] = $this->object->getAutosaveIval();
                }
                else
                {
                        $config['autosaveUrl'] = '';
                        $config['autosaveInterval'] = 0;
                }

                // hey: prevPassSolutions - refactored method identifiers
                $questionConfig = $questionGUI->object->getTestPresentationConfig();
                // hey.

                // Normal questions: changes are done in form fields an can be detected there
                $config['withFormChangeDetection'] = $questionConfig->isFormChangeDetectionEnabled();

                // Flash and Java questions: changes are directly sent to ilias and have to be polled from there
                $config['withBackgroundChangeDetection'] = $questionConfig->isBackgroundChangeDetectionEnabled();
                $config['backgroundDetectorUrl'] = $this->ctrl->getLinkTarget($this, ilTestPlayerCommands::DETECT_CHANGES, '', true);

                // Forced feedback will change the navigation saving command
                $config['forcedInstantFeedback'] = $this->object->isForceInstantFeedbackEnabled();

                $this->tpl->addJavascript('./Modules/Test/js/ilTestPlayerQuestionEditControl.js');
                $this->tpl->addOnLoadCode('il.TestPlayerQuestionEditControl.init('.json_encode($config).')');
        }
// fau.

        protected function getQuestionsDefaultPresentationMode($isQuestionWorkedThrough)
        {
// fau: testNav - always set default presentation mode to "edit"
                return self::PRESENTATION_MODE_EDIT;
// fau.
        }
        
        protected function buildFixedShufflerSeed($questionId)
        {
                $fixedSeed = $questionId . $this->testSession->getActiveId() . $this->testSession->getPass();
                
                if( strlen($fixedSeed < ilTestPlayerAbstractGUI::FIXED_SHUFFLER_SEED_MIN_LENGTH) )
                {
                        $fixedSeed *= (
                                10 * (ilTestPlayerAbstractGUI::FIXED_SHUFFLER_SEED_MIN_LENGTH - strlen($fixedSeed))
                        );
                }
                
                return $fixedSeed;
        }
        
        protected function registerForcedFeedbackNavUrl($forcedFeedbackNavUrl)
        {
                if( !isset($_SESSION['forced_feedback_navigation_url']) )
                {
                        $_SESSION['forced_feedback_navigation_url'] = array();
                }
                
                $_SESSION['forced_feedback_navigation_url'][$this->testSession->getActiveId()] = $forcedFeedbackNavUrl;
        }
        
        protected function getRegisteredForcedFeedbackNavUrl()
        {
                if( !isset($_SESSION['forced_feedback_navigation_url']) )
                {
                        return null;
                }
                
                if( !isset($_SESSION['forced_feedback_navigation_url'][$this->testSession->getActiveId()]) )
                {
                        return null;
                }
                
                return $_SESSION['forced_feedback_navigation_url'][$this->testSession->getActiveId()];
        }
        
        protected function isForcedFeedbackNavUrlRegistered()
        {
                return !empty($this->getRegisteredForcedFeedbackNavUrl());
        }
        
        protected function unregisterForcedFeedbackNavUrl()
        {
                if( isset($_SESSION['forced_feedback_navigation_url'][$this->testSession->getActiveId()]) )
                {
                        unset($_SESSION['forced_feedback_navigation_url'][$this->testSession->getActiveId()]);
                }
        }
}