class.ilObjTestSettingsGeneralGUI.php

Go to the documentation of this file.

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

require_once 'Modules/Test/classes/class.ilTestSettingsGUI.php';
require_once 'Services/AdvancedEditing/classes/class.ilObjAdvancedEditing.php';

class ilObjTestSettingsGeneralGUI extends ilTestSettingsGUI
{
    const CMD_SHOW_FORM = 'showForm';
    const CMD_SAVE_FORM = 'saveForm';
    const CMD_CONFIRMED_SAVE_FORM = 'confirmedSaveForm';
    const CMD_SHOW_RESET_TPL_CONFIRM = 'showResetTemplateConfirmation';
    const CMD_CONFIRMED_RESET_TPL = 'confirmedResetTemplate';
    
    const ANSWER_FIXATION_NONE = 'none';
    const ANSWER_FIXATION_ON_INSTANT_FEEDBACK = 'instant_feedback';
    const ANSWER_FIXATION_ON_FOLLOWUP_QUESTION = 'followup_question';
    const ANSWER_FIXATION_ON_IFB_OR_FUQST = 'ifb_or_fuqst';
    
    const INSTANT_FEEDBACK_TRIGGER_MANUAL = 0;
    const INSTANT_FEEDBACK_TRIGGER_FORCED = 1;

    protected $ctrl = null;

    protected $access = null;

    protected $lng = null;

    protected $tpl = null;

    protected $tree = null;

    protected $db = null;

    protected $pluginAdmin = null;

    protected $activeUser = null;

    protected $testGUI = null;

    private $testQuestionSetConfigFactory = null;

    public function __construct(
        ilCtrl $ctrl,
        ilAccessHandler $access,
        ilLanguage $lng,
        ilTree $tree,
        ilDBInterface $db,
        ilPluginAdmin $pluginAdmin,
        ilObjUser $activeUser,
        ilObjTestGUI $testGUI
    ) {
        global $DIC; /* @var ILIAS\DI\Container $DIC */
        
        $this->ctrl = $ctrl;
        $this->access = $access;
        $this->lng = $lng;
        $this->tpl = $DIC->ui()->mainTemplate();
        $this->tree = $tree;
        $this->db = $db;
        $this->pluginAdmin = $pluginAdmin;
        $this->activeUser = $activeUser;

        $this->testGUI = $testGUI;

        require_once 'Modules/Test/classes/class.ilTestQuestionSetConfigFactory.php';
        $this->testQuestionSetConfigFactory = new ilTestQuestionSetConfigFactory($this->tree, $this->db, $this->pluginAdmin, $testGUI->object);

        parent::__construct($testGUI->object);
    }

    public function executeCommand()
    {
        global $DIC; /* @var ILIAS\DI\Container $DIC */
        
        // allow only write access

        if (!$this->access->checkAccess("write", "", $this->testGUI->ref_id)) {
            ilUtil::sendInfo($this->lng->txt("cannot_edit_test"), true);
            $this->ctrl->redirect($this->testGUI, "infoScreen");
        }
        
        $DIC->tabs()->activateTab(ilTestTabsManager::TAB_ID_SETTINGS);

        // process command

        $nextClass = $this->ctrl->getNextClass();

        switch ($nextClass) {
            default:
                $cmd = $this->ctrl->getCmd(self::CMD_SHOW_FORM) . 'Cmd';
                $this->$cmd();
        }
    }

    private function showFormCmd(ilPropertyFormGUI $form = null)
    {
        $this->tpl->addJavascript("./Services/JavaScript/js/Basic.js");

        if ($form === null) {
            $form = $this->buildForm();
        }

        $formHTML = $this->ctrl->getHTML($form);
        $msgHTML = $this->getSettingsTemplateMessageHTML();

        $this->tpl->setContent($formHTML . $msgHTML);
    }

    private function showConfirmation(ilPropertyFormGUI $form, $oldQuestionSetType, $newQuestionSetType, $hasQuestionsWithoutQuestionpool)
    {
        require_once 'Modules/Test/classes/confirmations/class.ilTestSettingsChangeConfirmationGUI.php';
        $confirmation = new ilTestSettingsChangeConfirmationGUI($this->lng, $this->testOBJ);

        $confirmation->setFormAction($this->ctrl->getFormAction($this));
        $confirmation->setCancel($this->lng->txt('cancel'), self::CMD_SHOW_FORM);
        $confirmation->setConfirm($this->lng->txt('confirm'), self::CMD_CONFIRMED_SAVE_FORM);

        $confirmation->setOldQuestionSetType($oldQuestionSetType);
        $confirmation->setNewQuestionSetType($newQuestionSetType);
        $confirmation->setQuestionLossInfoEnabled($hasQuestionsWithoutQuestionpool);
        $confirmation->build();

        $confirmation->populateParametersFromPropertyForm($form, $this->activeUser->getTimeZone());

        $this->tpl->setContent($this->ctrl->getHTML($confirmation));
    }

    protected function getSettingsTemplateMessageHTML()
    {
        if ($this->settingsTemplate) {
            $title = $this->settingsTemplate->getTitle();
            
            if ($this->settingsTemplate->getAutoGenerated()) {
                $title = $this->lng->txt($title);
            }
            
            global $DIC;
            $tpl = $DIC['tpl'];

            $link = $this->ctrl->getLinkTarget($this, self::CMD_SHOW_RESET_TPL_CONFIRM);
            $link = "<a href=\"" . $link . "\">" . $this->lng->txt("test_using_template_link") . "</a>";

            $msgHTML = ilUtil::getSystemMessageHTML(
                sprintf($this->lng->txt("test_using_template"), $title, $link),
                "info"
            );

            $msgHTML = "<div style=\"margin-top:10px\">$msgHTML</div>";
        } else {
            $msgHTML = '';
        }

        return $msgHTML;
    }

    private function confirmedSaveFormCmd()
    {
        return $this->saveFormCmd(true);
    }

    private function saveFormCmd($isConfirmedSave = false)
    {
        $form = $this->buildForm();

        // form validation and initialisation
        
        if ($isConfirmedSave) {
            // since confirmation does only pickup POST and no FILES
            // mocking the tile image file upload field is neccessary
            // due to checkInput() behaviour (fixes mantis #24226)
            $_FILES['tile_image'] = array(
                'name' => '', 'type' => '', 'size' => '', 'tmp_name' => '', 'error' => ''
            );
            
            // TODO: get rid of question selection mode setting in settings form (move to creation screen)
        }

        $errors = !$form->checkInput(); // ALWAYS CALL BEFORE setValuesByPost()
        $form->setValuesByPost(); // NEVER CALL THIS BEFORE checkInput()
                                    // Sarcasm? No. Because checkInput checks the form graph against the POST without
                                    // actually setting the values into the form. Sounds ridiculous? Indeed, and it is.

        // return to form when any form validation errors exist

        if ($errors) {
            ilUtil::sendFailure($this->lng->txt('form_input_not_valid'));
            return $this->showFormCmd($form);
        }
        
        // return to form when online is to be set, but no questions are configured

        $currentQuestionSetConfig = $this->testQuestionSetConfigFactory->getQuestionSetConfig();
        if ($form->getItemByPostVar('online')->getChecked() && !$this->testOBJ->isComplete($currentQuestionSetConfig)) {
            $form->getItemByPostVar('online')->setAlert(
                $this->lng->txt("cannot_switch_to_online_no_questions_andor_no_mark_steps")
            );

            ilUtil::sendFailure($this->lng->txt('form_input_not_valid'));
            return $this->showFormCmd($form);
        }
        
        // avoid settings conflict "ctm" and "do not show question titles"
        
        $qstSetSetting = $form->getItemByPostVar('question_set_type');
        $qTitleSetting = $form->getItemByPostVar('title_output');
        
        if ($qstSetSetting->getValue() == ilObjTest::QUESTION_SET_TYPE_DYNAMIC && $qTitleSetting->getValue() == 2) {
            $qstSetSetting->setAlert($this->lng->txt('tst_conflicting_setting'));
            $qTitleSetting->setAlert($this->lng->txt('tst_conflicting_setting'));
            
            ilUtil::sendFailure($this->lng->txt('tst_settings_conflict_message'));
            return $this->showFormCmd($form);
        }
        
        // avoid settings conflict "obligate questions" and "freeze answer"
        
        $obligationsSetting = $form->getItemByPostVar('obligations_enabled');
        $answerFixationSetting = $form->getItemByPostVar('answer_fixation_handling');
        
        if ($obligationsSetting->getChecked() && $answerFixationSetting->getValue() != self::ANSWER_FIXATION_NONE) {
            $obligationsSetting->setAlert($this->lng->txt('tst_conflicting_setting'));
            $answerFixationSetting->setAlert($this->lng->txt('tst_conflicting_setting'));
            
            ilUtil::sendFailure($this->lng->txt('tst_settings_conflict_message'));
            return $this->showFormCmd($form);
        }
        
        // avoid settings conflict "freeze answer on followup question" and "question postponing"
        
        $postponeSetting = $form->getItemByPostVar('postpone');
        $answerFixationSetting = $form->getItemByPostVar('answer_fixation_handling');
        $conflictModes = array(self::ANSWER_FIXATION_ON_FOLLOWUP_QUESTION, self::ANSWER_FIXATION_ON_IFB_OR_FUQST);
        
        if ($postponeSetting->getValue() && in_array($answerFixationSetting->getValue(), $conflictModes)) {
            $postponeSetting->setAlert($this->lng->txt('tst_conflicting_setting'));
            $answerFixationSetting->setAlert($this->lng->txt('tst_conflicting_setting'));
            
            ilUtil::sendFailure($this->lng->txt('tst_settings_conflict_message'));
            return $this->showFormCmd($form);
        }
        
        // avoid settings conflict "freeze answer on followup question" and "question shuffling"
        
        $shuffleSetting = $form->getItemByPostVar('chb_shuffle_questions');
        $answerFixationSetting = $form->getItemByPostVar('answer_fixation_handling');
        $conflictModes = array(self::ANSWER_FIXATION_ON_FOLLOWUP_QUESTION, self::ANSWER_FIXATION_ON_IFB_OR_FUQST);
        
        if ($shuffleSetting->getChecked() && in_array($answerFixationSetting->getValue(), $conflictModes)) {
            $shuffleSetting->setAlert($this->lng->txt('tst_conflicting_setting'));
            $answerFixationSetting->setAlert($this->lng->txt('tst_conflicting_setting'));
            
            ilUtil::sendFailure($this->lng->txt('tst_settings_conflict_message'));
            return $this->showFormCmd($form);
        }

        $infoMsg = array();

        // solve conflicts with question set type setting with confirmation screen if required
        // determine wether question set type relating data is to be removed (questions/pools)

        $questionSetTypeRelatingDataCleanupRequired = false;

        $oldQuestionSetType = $this->testOBJ->getQuestionSetType();
        if ($form->getItemByPostVar('question_set_type') instanceof ilFormPropertyGUI) {
            $newQuestionSetType = $form->getItemByPostVar('question_set_type')->getValue();

            if (!$this->testOBJ->participantDataExist() && $newQuestionSetType != $oldQuestionSetType) {
                $oldQuestionSetConfig = $this->testQuestionSetConfigFactory->getQuestionSetConfigByType(
                    $oldQuestionSetType
                );

                if ($oldQuestionSetConfig->doesQuestionSetRelatedDataExist()) {
                    if (!$isConfirmedSave) {
                        if ($oldQuestionSetType == ilObjTest::QUESTION_SET_TYPE_FIXED) {
                            return $this->showConfirmation(
                                $form,
                                $oldQuestionSetType,
                                $newQuestionSetType,
                                $this->testOBJ->hasQuestionsWithoutQuestionpool()
                            );
                        }

                        return $this->showConfirmation(
                            $form,
                            $oldQuestionSetType,
                            $newQuestionSetType,
                            false
                        );
                    }

                    $questionSetTypeRelatingDataCleanupRequired = true;
                }

                if ($form->getItemByPostVar('online')->getChecked()) {
                    $form->getItemByPostVar('online')->setChecked(false);

                    if (!$this->testOBJ->getOfflineStatus()) {
                        $infoMsg[] = $this->lng->txt("tst_set_offline_due_to_switched_question_set_type_setting");
                    } else {
                        $infoMsg[] = $this->lng->txt("tst_cannot_online_due_to_switched_quest_set_type_setting");
                    }
                }
            }
        } else {
            $newQuestionSetType = $oldQuestionSetType;
        }

        // adjust settings due to chosen question set type

        if ($newQuestionSetType != ilObjTest::QUESTION_SET_TYPE_FIXED) {
            $form->getItemByPostVar('chb_use_previous_answers')->setChecked(false);
        }
        
        // perform saving the form data

        $this->performSaveForm($form);

        // clean up test mode relating configuration data (questions/questionpools)

        if ($questionSetTypeRelatingDataCleanupRequired) {
            $oldQuestionSetConfig->removeQuestionSetRelatedData();
        }

        // disinvite all invited users if required

        if (!$this->testOBJ->participantDataExist() && !$this->testOBJ->getFixedParticipants()) {
            foreach ($this->testOBJ->getInvitedUsers() as $usrId => $usrData) {
                $this->testOBJ->disinviteUser($usrId);
            }
        }

        // redirect to form output

        if (count($infoMsg)) {
            ilUtil::sendInfo(implode('<br />', $infoMsg), true);
        }

        ilUtil::sendSuccess($this->lng->txt("msg_obj_modified"), true);
        $this->ctrl->redirect($this, self::CMD_SHOW_FORM);
    }

    private function showResetTemplateConfirmationCmd()
    {
        require_once 'Services/Utilities/classes/class.ilConfirmationGUI.php';
        $confirmationGUI = new ilConfirmationGUI();

        $confirmationGUI->setFormAction($this->ctrl->getFormAction($this));
        $confirmationGUI->setHeaderText($this->lng->txt("test_confirm_template_reset"));
        $confirmationGUI->setCancel($this->lng->txt('cancel'), self::CMD_SHOW_FORM);
        $confirmationGUI->setConfirm($this->lng->txt('confirm'), self::CMD_CONFIRMED_RESET_TPL);

        $this->tpl->setContent($this->ctrl->getHTML($confirmationGUI));
    }

    private function confirmedResetTemplateCmd()
    {
        $this->testOBJ->setTemplate(null);
        $this->testOBJ->saveToDB();

        ilUtil::sendSuccess($this->lng->txt("test_template_reset"), true);
        $this->ctrl->redirect($this, self::CMD_SHOW_FORM);
    }

    private function isSkillServiceSettingToBeAdjusted(ilPropertyFormGUI $form)
    {
        if (!($form->getItemByPostVar('skill_service') instanceof ilFormPropertyGUI)) {
            return false;
        }

        if (!ilObjTest::isSkillManagementGloballyActivated()) {
            return false;
        }

        if (!$form->getItemByPostVar('skill_service')->getChecked()) {
            return false;
        }

        return true;
    }

    private function isCharSelectorPropertyRequired()
    {
        global $DIC;
        $ilSetting = $DIC['ilSetting'];

        return $ilSetting->get('char_selector_availability') > 0;
    }


    private function buildForm()
    {
        require_once 'Services/Form/classes/class.ilPropertyFormGUI.php';
        $form = new ilPropertyFormGUI();
        $form->setFormAction($this->ctrl->getFormAction($this));
        $form->addCommandButton(self::CMD_SAVE_FORM, $this->lng->txt("save"));
        $form->setTableWidth("100%");
        $form->setId("test_properties");

        $this->addGeneralProperties($form);
        $this->addAvailabilityProperties($form);
        $this->addPresentationProperties($form);
        $this->addTestIntroProperties($form);
        $this->addTestAccessProperties($form);
        $this->addTestRunProperties($form);
        $this->addQuestionBehaviourProperties($form);
        $this->addTestSequenceProperties($form);
        $this->addTestFinishProperties($form);

        // Edit ecs export settings
        include_once 'Modules/Test/classes/class.ilECSTestSettings.php';
        $ecs = new ilECSTestSettings($this->testOBJ);
        $ecs->addSettingsToForm($form, 'tst');
        
        // additional features
        
        $orgunitServiceActive = ilOrgUnitGlobalSettings::getInstance()->getObjectPositionSettingsByType(
            $this->testOBJ->getType()
        )->isActive();

        $skillServiceActive = ilObjTest::isSkillManagementGloballyActivated();
        
        
        if ($orgunitServiceActive || $skillServiceActive) {
            $otherHead = new ilFormSectionHeaderGUI();
            $otherHead->setTitle($this->lng->txt('obj_features'));
            $form->addItem($otherHead);
        }
        
        require_once 'Services/Object/classes/class.ilObjectServiceSettingsGUI.php';
        ilObjectServiceSettingsGUI::initServiceSettingsForm($this->testOBJ->getId(), $form, array(
                ilObjectServiceSettingsGUI::ORGU_POSITION_ACCESS
        ));
        
        // skill service activation for FIXED tests only
        if ($skillServiceActive) {
            $skillService = new ilCheckboxInputGUI($this->lng->txt('tst_activate_skill_service'), 'skill_service');
            $skillService->setInfo($this->lng->txt('tst_activate_skill_service_desc'));
            $skillService->setChecked($this->testOBJ->isSkillServiceEnabled());
            if ($this->testOBJ->participantDataExist()) {
                $skillService->setDisabled(true);
            }
            $form->addItem($skillService);
        }

        // remove items when using template
        $this->removeHiddenItems($form);

        return $form;
    }

    private function performSaveForm(ilPropertyFormGUI $form)
    {
        $this->saveGeneralProperties($form);
        $this->savePresentationProperties($form);
        $this->saveAvailabilityProperties($form);
        $this->saveTestIntroProperties($form);
        $this->saveTestAccessProperties($form);
        $this->saveTestRunProperties($form);
        $this->saveQuestionBehaviourProperties($form);
        $this->saveTestSequenceSettings($form);
        $this->saveTestFinishProperties($form);

        if (!$this->testOBJ->participantDataExist()) {
            // skill service
            if (ilObjTest::isSkillManagementGloballyActivated() && $form->getItemByPostVar('skill_service') instanceof ilFormPropertyGUI) {
                $this->testOBJ->setSkillServiceEnabled($form->getItemByPostVar('skill_service')->getChecked());
            }
        }
        
        require_once 'Services/Object/classes/class.ilObjectServiceSettingsGUI.php';
        ilObjectServiceSettingsGUI::updateServiceSettingsForm($this->testOBJ->getId(), $form, array(
            ilObjectServiceSettingsGUI::ORGU_POSITION_ACCESS
        ));

        // store settings to db
        $this->testOBJ->saveToDb(true);

        // Update ecs export settings
        include_once 'Modules/Test/classes/class.ilECSTestSettings.php';
        $ecs = new ilECSTestSettings($this->testOBJ);
        $ecs->handleSettingsUpdate();
    }

    private function addGeneralProperties(ilPropertyFormGUI $form)
    {
        $header = new ilFormSectionHeaderGUI();
        $header->setTitle($this->lng->txt("tst_general_properties"));
        $form->addItem($header);

        // title & description (meta data)

        include_once 'Services/MetaData/classes/class.ilMD.php';
        $md_obj = new ilMD($this->testOBJ->getId(), 0, "tst");
        $md_section = $md_obj->getGeneral();

        $title = new ilTextInputGUI($this->lng->txt("title"), "title");
        $title->setRequired(true);
        $title->setValue($md_section->getTitle());
        $form->addItem($title);

        $ids = $md_section->getDescriptionIds();
        if ($ids) {
            $desc_obj = $md_section->getDescription(array_pop($ids));

            $desc = new ilTextAreaInputGUI($this->lng->txt("description"), "description");
            $desc->setCols(50);
            $desc->setRows(4);
            $desc->setValue($desc_obj->getDescription());
            $form->addItem($desc);
        }

        // pool usage
        $pool_usage = new ilRadioGroupInputGUI($this->lng->txt('test_question_pool_usage'), 'use_pool');

        $optional_qpl = new ilRadioOption($this->lng->txt('test_question_pool_usage_optional'), 1);
        $optional_qpl->setInfo($this->lng->txt('test_question_pool_usage_optional_info'));
        $pool_usage->addOption($optional_qpl);

        $tst_directly = new ilRadioOption($this->lng->txt('test_question_pool_usage_tst_directly'), 0);
        $tst_directly->setInfo($this->lng->txt('test_question_pool_usage_tst_directly_info'));
        $pool_usage->addOption($tst_directly);

        $pool_usage->setValue($this->testOBJ->getPoolUsage() ? 1 : 0);
        $form->addItem($pool_usage);

        // test mode (question set type)
        $questSetType = new ilRadioGroupInputGUI($this->lng->txt("tst_question_set_type"), 'question_set_type');
        $questSetTypeFixed = new ilRadioOption(
            $this->lng->txt("tst_question_set_type_fixed"),
            ilObjTest::QUESTION_SET_TYPE_FIXED,
            $this->lng->txt("tst_question_set_type_fixed_desc")
        );
        $questSetType->addOption($questSetTypeFixed);
        $questSetTypeRandom = new ilRadioOption(
            $this->lng->txt("tst_question_set_type_random"),
            ilObjTest::QUESTION_SET_TYPE_RANDOM,
            $this->lng->txt("tst_question_set_type_random_desc")
        );
        $questSetType->addOption($questSetTypeRandom);
        $questSetTypeContinues = new ilRadioOption(
            $this->lng->txt("tst_question_set_type_dynamic"),
            ilObjTest::QUESTION_SET_TYPE_DYNAMIC,
            $this->lng->txt("tst_question_set_type_dynamic_desc")
        );
        $questSetType->addOption($questSetTypeContinues);
        $questSetType->setValue($this->testOBJ->getQuestionSetType());
        if ($this->testOBJ->participantDataExist()) {
            $questSetType->setDisabled(true);
        }
        $form->addItem($questSetType);

        // anonymity
        $anonymity = new ilRadioGroupInputGUI($this->lng->txt('tst_anonymity'), 'anonymity');
        if ($this->testOBJ->participantDataExist()) {
            $anonymity->setDisabled(true);
        }
        $rb = new ilRadioOption($this->lng->txt('tst_anonymity_no_anonymization'), 0);
        $anonymity->addOption($rb);
        $rb = new ilRadioOption($this->lng->txt('tst_anonymity_anonymous_test'), 1);
        $anonymity->addOption($rb);
        $anonymity->setValue((int) $this->testOBJ->getAnonymity());
        $form->addItem($anonymity);
    }

    private function saveGeneralProperties(ilPropertyFormGUI $form)
    {
        include_once 'Services/MetaData/classes/class.ilMD.php';
        $md_obj = new ilMD($this->testOBJ->getId(), 0, "tst");
        $md_section = $md_obj->getGeneral();

        // title
        $md_section->setTitle(ilUtil::stripSlashes($form->getItemByPostVar('title')->getValue()));
        $md_section->update();

        // Description
        $md_desc_ids = $md_section->getDescriptionIds();
        if ($md_desc_ids) {
            $md_desc = $md_section->getDescription(array_pop($md_desc_ids));
            $md_desc->setDescription(ilUtil::stripSlashes($form->getItemByPostVar('description')->getValue()));
            $md_desc->update();
        } else {
            $md_desc = $md_section->addDescription();
            $md_desc->setDescription(ilUtil::stripSlashes($form->getItemByPostVar('description')->getValue()));
            $md_desc->save();
        }

        $this->testOBJ->setTitle(ilUtil::stripSlashes($form->getItemByPostVar('title')->getValue()));
        $this->testOBJ->setDescription(ilUtil::stripSlashes($form->getItemByPostVar('description')->getValue()));
        $this->testOBJ->setOfflineStatus(!$form->getItemByPostVar('online')->getChecked());
        $this->testOBJ->update();

        // pool usage setting
        if ($form->getItemByPostVar('use_pool') instanceof ilFormPropertyGUI) {
            $this->testOBJ->setPoolUsage((int) $form->getItemByPostVar('use_pool')->getValue());
        }

        if (!$this->testOBJ->participantDataExist()) {
            // question set type
            if ($form->getItemByPostVar('question_set_type') instanceof ilFormPropertyGUI) {
                $this->testOBJ->setQuestionSetType($form->getItemByPostVar('question_set_type')->getValue());
            }
        }

        // anonymity setting
        if (!$this->testOBJ->participantDataExist() && $this->formPropertyExists($form, 'anonymity')) {
            $this->testOBJ->setAnonymity($form->getItemByPostVar('anonymity')->getValue());
        }
    }

    private function addAvailabilityProperties(ilPropertyFormGUI $form)
    {
        include_once "Services/Object/classes/class.ilObjectActivation.php";
        $this->lng->loadLanguageModule('rep');

        $section = new ilFormSectionHeaderGUI();
        $section->setTitle($this->lng->txt('rep_activation_availability'));
        $form->addItem($section);

        // additional info only with multiple references
        $act_obj_info = $act_ref_info = "";
        if (sizeof(ilObject::_getAllReferences($this->testOBJ->getId())) > 1) {
            $act_obj_info = ' ' . $this->lng->txt('rep_activation_online_object_info');
            $act_ref_info = $this->lng->txt('rep_activation_access_ref_info');
        }

        $online = new ilCheckboxInputGUI($this->lng->txt('rep_activation_online'), 'online');
        $online->setChecked(!$this->testOBJ->getOfflineStatus());
        $online->setInfo($this->lng->txt('tst_activation_online_info') . $act_obj_info);
        $form->addItem($online);

        $act_type = new ilCheckboxInputGUI($this->lng->txt('rep_visibility_until'), 'activation_type');
        $act_type->setChecked($this->testOBJ->isActivationLimited());
        // $act_type->setInfo($this->lng->txt('tst_availability_until_info'));

        include_once "Services/Form/classes/class.ilDateDurationInputGUI.php";
        $dur = new ilDateDurationInputGUI($this->lng->txt("rep_time_period"), "access_period");
        $dur->setRequired(true);
        $dur->setShowTime(true);
        $date = $this->testOBJ->getActivationStartingTime();
        $dur->setStart(new ilDateTime($date ? $date : time(), IL_CAL_UNIX));
        $dur->setStartText($this->lng->txt('rep_activation_limited_start'));
        $date = $this->testOBJ->getActivationEndingTime();
        $dur->setEnd(new ilDateTime($date ? $date : time(), IL_CAL_UNIX));
        $dur->setEndText($this->lng->txt('rep_activation_limited_end'));
        $act_type->addSubItem($dur);

        $visible = new ilCheckboxInputGUI($this->lng->txt('rep_activation_limited_visibility'), 'activation_visibility');
        $visible->setInfo($this->lng->txt('tst_activation_limited_visibility_info'));
        $visible->setChecked($this->testOBJ->getActivationVisibility());
        $act_type->addSubItem($visible);

        $form->addItem($act_type);
    }

    private function saveAvailabilityProperties(ilPropertyFormGUI $form)
    {
        // activation
        if ($form->getItemByPostVar('activation_type')->getChecked()) {
            $this->testOBJ->setActivationLimited(true);
            $this->testOBJ->setActivationVisibility($form->getItemByPostVar('activation_visibility')->getChecked());

            $period = $form->getItemByPostVar("access_period");
            $this->testOBJ->setActivationStartingTime($period->getStart()->get(IL_CAL_UNIX));
            $this->testOBJ->setActivationEndingTime($period->getEnd()->get(IL_CAL_UNIX));
        } else {
            $this->testOBJ->setActivationLimited(false);
        }
    }
    
    protected function addPresentationProperties(ilPropertyFormGUI $form)
    {
        global $DIC; /* @var ILIAS\DI\Container $DIC */
        
        $section = new ilFormSectionHeaderGUI();
        $section->setTitle($this->lng->txt('tst_presentation_settings_section'));
        $form->addItem($section);
        
        $DIC->object()->commonSettings()->legacyForm($form, $this->testOBJ)->addTileImage();
    }
    
    protected function savePresentationProperties(ilPropertyFormGUI $form)
    {
        global $DIC; /* @var ILIAS\DI\Container $DIC */
        
        $DIC->object()->commonSettings()->legacyForm($form, $this->testOBJ)->saveTileImage();
    }

    private function addTestIntroProperties(ilPropertyFormGUI $form)
    {
        $section = new ilFormSectionHeaderGUI();
        $section->setTitle($this->lng->txt('tst_settings_header_intro'));
        $form->addItem($section);

        // introduction
        $introEnabled = new ilCheckboxInputGUI($this->lng->txt("tst_introduction"), 'intro_enabled');
        $introEnabled->setChecked($this->testOBJ->isIntroductionEnabled());
        $introEnabled->setInfo($this->lng->txt('tst_introduction_desc'));
        $form->addItem($introEnabled);
        $intro = new ilTextAreaInputGUI($this->lng->txt("tst_introduction_text"), "introduction");
        $intro->setRequired(true);
        $intro->setValue($this->testOBJ->prepareTextareaOutput($this->testOBJ->getIntroduction(), false, true));
        $intro->setRows(10);
        $intro->setCols(80);
        $intro->setUseRte(true);
        $intro->addPlugin("latex");
        $intro->addButton("latex");
        $intro->setRTESupport($this->testOBJ->getId(), "tst", "assessment");
        $intro->setRteTagSet('full');
        $introEnabled->addSubItem($intro);

        // showinfo
        $showinfo = new ilCheckboxInputGUI($this->lng->txt("showinfo"), "showinfo");
        $showinfo->setValue(1);
        $showinfo->setChecked($this->testOBJ->getShowInfo());
        $showinfo->setInfo($this->lng->txt("showinfo_desc"));
        $form->addItem($showinfo);
    }

    private function saveTestIntroProperties(ilPropertyFormGUI $form)
    {
        if ($form->getItemByPostVar('intro_enabled') instanceof ilFormPropertyGUI) {
            $this->testOBJ->setIntroductionEnabled($form->getItemByPostVar('intro_enabled')->getChecked());

            if ($form->getItemByPostVar('intro_enabled')->getChecked()) {
                $this->testOBJ->setIntroduction($form->getItemByPostVar('introduction')->getValue());
            } else {
                $this->testOBJ->setIntroduction('');
            }
        }

        if ($form->getItemByPostVar('showinfo') instanceof ilFormPropertyGUI) {
            $this->testOBJ->setShowInfo($form->getItemByPostVar('showinfo')->getChecked());
        }
    }

    private function addTestAccessProperties(ilPropertyFormGUI $form)
    {
        $header = new ilFormSectionHeaderGUI();
        $header->setTitle($this->lng->txt("tst_settings_header_execution"));
        $form->addItem($header);

        // starting time
        $startingtime = new ilDateTimeInputGUI($this->lng->txt("tst_starting_time"), 'starting_time');
        $startingtime->setInfo($this->lng->txt("tst_starting_time_desc"));
        $startingtime->setShowTime(true);
        if ($this->testOBJ->getStartingTime() != 0) {
            $startingtime->setDate(new ilDateTime($this->testOBJ->getStartingTime(), IL_CAL_UNIX));
        } else {
            $startingtime->setDate(null);
        }

        $form->addItem($startingtime);
        if ($this->testOBJ->participantDataExist()) {
            $startingtime->setDisabled(true);
        }

        // ending time
        $endingtime = new ilDateTimeInputGUI($this->lng->txt("tst_ending_time"), 'ending_time');
        $endingtime->setInfo($this->lng->txt("tst_ending_time_desc"));
        $endingtime->setShowTime(true);
        if ($this->testOBJ->getEndingTime() != 0) {
            $endingtime->setDate(new ilDateTime($this->testOBJ->getEndingTime(), IL_CAL_UNIX));
        } else {
            $endingtime->setDate(null);
        }
        $form->addItem($endingtime);

        // test password
        $pwEnabled = new ilCheckboxInputGUI($this->lng->txt('tst_password'), 'password_enabled');
        $pwEnabled->setChecked($this->testOBJ->isPasswordEnabled());
        $pwEnabled->setInfo($this->lng->txt("tst_password_details"));
        $password = new ilTextInputGUI($this->lng->txt("tst_password_enter"), "password");
        $password->setRequired(true);
        $password->setSize(20);
        $password->setMaxLength(20);
        $password->setValue($this->testOBJ->getPassword());
        $pwEnabled->addSubItem($password);
        $form->addItem($pwEnabled);

        // fixed participants
        $fixedparticipants = new ilCheckboxInputGUI($this->lng->txt('participants_invitation'), "fixedparticipants");
        $fixedparticipants->setValue(1);
        $fixedparticipants->setChecked($this->testOBJ->getFixedParticipants());
        $fixedparticipants->setInfo($this->lng->txt("participants_invitation_description"));
        if ($this->testOBJ->participantDataExist()) {
            $fixedparticipants->setDisabled(true);
        }
        $form->addItem($fixedparticipants);

        // simultaneous users
        $simulLimited = new ilCheckboxInputGUI($this->lng->txt("tst_allowed_users"), 'limitUsers');
        $simulLimited->setInfo($this->lng->txt("tst_allowed_users_desc"));
        $simulLimited->setChecked($this->testOBJ->isLimitUsersEnabled());

        // allowed simultaneous users
        $simul = new ilNumberInputGUI($this->lng->txt("tst_allowed_users_max"), "allowedUsers");
        $simul->setRequired(true);
        $simul->allowDecimals(false);
        $simul->setMinValue(1);
        $simul->setMinvalueShouldBeGreater(false);
        $simul->setSize(4);
        $simul->setValue(($this->testOBJ->getAllowedUsers()) ? $this->testOBJ->getAllowedUsers() : '');
        $simulLimited->addSubItem($simul);

        // idle time
        $idle = new ilNumberInputGUI($this->lng->txt("tst_allowed_users_time_gap"), "allowedUsersTimeGap");
        $idle->setInfo($this->lng->txt("tst_allowed_users_time_gap_desc"));
        $idle->setSize(4);
        $idle->setSuffix($this->lng->txt("seconds"));
        $idle->setValue(($this->testOBJ->getAllowedUsersTimeGap()) ? $this->testOBJ->getAllowedUsersTimeGap() : 300);
        $simulLimited->addSubItem($idle);

        $form->addItem($simulLimited);
        return $header;
    }

    private function saveTestAccessProperties(ilPropertyFormGUI $form)
    {
        if (!$this->testOBJ->participantDataExist()) {
            // starting time
            $starting_time = $form->getItemByPostVar('starting_time')->getDate();
            if ($starting_time instanceof ilDateTime) {
                $this->testOBJ->setStartingTime($starting_time->getUnixtime());
                $this->testOBJ->setStartingTimeEnabled(true);
            } else {
                $this->testOBJ->setStartingTime(null);
                $this->testOBJ->setStartingTimeEnabled(false);
            }
        }

        // ending time
        $ending_time = $form->getItemByPostVar('ending_time')->getDate();
        if ($ending_time instanceof ilDateTime) {
            $this->testOBJ->setEndingTime($ending_time->getUnixtime());
            $this->testOBJ->setEndingTimeEnabled(true);
        } else {
            $this->testOBJ->setEndingTime(null);
            $this->testOBJ->setEndingTimeEnabled(false);
        }

        if ($this->formPropertyExists($form, 'password_enabled')) {
            $this->testOBJ->setPasswordEnabled($form->getItemByPostVar('password_enabled')->getChecked());

            if ($form->getItemByPostVar('password_enabled')->getChecked()) {
                $this->testOBJ->setPassword($form->getItemByPostVar('password')->getValue());
            } else {
                $this->testOBJ->setPassword(''); // otherwise test will still respect value
            }
        }

        if ($this->formPropertyExists($form, 'fixedparticipants') && !$this->testOBJ->participantDataExist()) {
            $this->testOBJ->setFixedParticipants($form->getItemByPostVar('fixedparticipants')->getChecked());
        }

        if ($this->formPropertyExists($form, 'limitUsers')) {
            $this->testOBJ->setLimitUsersEnabled($form->getItemByPostVar('limitUsers')->getChecked());

            if ($form->getItemByPostVar('limitUsers')->getChecked()) {
                $this->testOBJ->setAllowedUsers($form->getItemByPostVar('allowedUsers')->getValue());
                $this->testOBJ->setAllowedUsersTimeGap($form->getItemByPostVar('allowedUsersTimeGap')->getValue());
            } else {
                $this->testOBJ->setAllowedUsers(''); // otherwise test will still respect value
            }
        }
    }

    private function addTestRunProperties(ilPropertyFormGUI $form)
    {
        // section header test run
        $header = new ilFormSectionHeaderGUI();
        $header->setTitle($this->lng->txt("tst_settings_header_test_run"));
        $form->addItem($header);

        // max. number of passes
        $limitPasses = new ilCheckboxInputGUI($this->lng->txt("tst_limit_nr_of_tries"), 'limitPasses');
        $limitPasses->setInfo($this->lng->txt("tst_nr_of_tries_desc"));
        $limitPasses->setChecked($this->testOBJ->getNrOfTries() > 0);
        $nr_of_tries = new ilNumberInputGUI($this->lng->txt("tst_nr_of_tries"), "nr_of_tries");
        $nr_of_tries->setSize(3);
        $nr_of_tries->allowDecimals(false);
        $nr_of_tries->setMinValue(1);
        $nr_of_tries->setMinvalueShouldBeGreater(false);
        $nr_of_tries->setValue($this->testOBJ->getNrOfTries() ? $this->testOBJ->getNrOfTries() : 1);
        $nr_of_tries->setRequired(true);
        $limitPasses->addSubItem($nr_of_tries);
        $blockAfterPassed = new ilCheckboxInputGUI(
            $this->lng->txt('tst_block_passes_after_passed'),
            'block_after_passed'
        );
        $blockAfterPassed->setInfo($this->lng->txt('tst_block_passes_after_passed_info'));
        $blockAfterPassed->setChecked($this->testOBJ->isBlockPassesAfterPassedEnabled());
        $limitPasses->addSubItem($blockAfterPassed);
        if ($this->testOBJ->participantDataExist()) {
            $limitPasses->setDisabled(true);
            $blockAfterPassed->setDisabled(true);
            $nr_of_tries->setDisabled(true);
        }
        $form->addItem($limitPasses);

        // pass_waiting time between testruns
        $pass_waiting_enabled = new ilCheckboxInputGUI($this->lng->txt('tst_pass_waiting_enabled'), 'pass_waiting_enabled');
        $pass_waiting_enabled->setInfo($this->lng->txt('tst_pass_waiting_info'));
        $pass_waiting_enabled->setChecked($this->testOBJ->isPassWaitingEnabled());

        // pass_waiting
        $duration = new ilDurationInputGUI($this->lng->txt("tst_pass_waiting_time"), "pass_waiting");
        
        $duration->setShowMonths(true);
        $duration->setShowDays(true);
        $duration->setShowHours(true);
        $duration->setShowMinutes(true);
        
        $pw_time_array = explode(':', $this->testOBJ->getPassWaiting());
        $duration->setMonths($pw_time_array[0]);
        $duration->setDays($pw_time_array[1]);
        $duration->setHours($pw_time_array[2]);
        $duration->setMinutes($pw_time_array[3]);
        $duration->setRequired(false);
        $pass_waiting_enabled->addSubItem($duration);
        
        $form->addItem($pass_waiting_enabled);
        
        // enable max. processing time
        $processing = new ilCheckboxInputGUI($this->lng->txt("tst_processing_time"), "chb_processing_time");
        $processing->setInfo($this->lng->txt("tst_processing_time_desc"));
        $processing->setValue(1);

        if ($this->settingsTemplate && $this->getTemplateSettingValue('chb_processing_time')) {
            $processing->setChecked(true);
        } else {
            $processing->setChecked($this->testOBJ->getEnableProcessingTime());
        }

        // max. processing time
        $processingtime = new ilNumberInputGUI($this->lng->txt("tst_processing_time_duration"), 'processing_time');
        $processingtime->allowDecimals(false);
        $processingtime->setMinValue(1);
        $processingtime->setMinvalueShouldBeGreater(false);
        $processingtime->setValue($this->testOBJ->getProcessingTimeAsMinutes());
        $processingtime->setSize(5);
        $processingtime->setSuffix($this->lng->txt('minutes'));
        $processingtime->setInfo($this->lng->txt("tst_processing_time_duration_desc"));
        $processing->addSubItem($processingtime);

        // reset max. processing time
        $resetprocessing = new ilCheckboxInputGUI('', "chb_reset_processing_time");
        $resetprocessing->setValue(1);
        $resetprocessing->setOptionTitle($this->lng->txt("tst_reset_processing_time"));
        $resetprocessing->setChecked($this->testOBJ->getResetProcessingTime());
        $resetprocessing->setInfo($this->lng->txt("tst_reset_processing_time_desc"));
        $processing->addSubItem($resetprocessing);
        $form->addItem($processing);

        if ($this->testOBJ->participantDataExist()) {
            $processing->setDisabled(true);
            $processingtime->setDisabled(true);
            $resetprocessing->setDisabled(true);
            
            $duration->setDisabled(true);
            $pass_waiting_enabled->setDisabled(true);
        }

        // kiosk mode
        $kiosk = new ilCheckboxInputGUI($this->lng->txt("kiosk"), "kiosk");
        $kiosk->setValue(1);
        $kiosk->setChecked($this->testOBJ->getKioskMode());
        $kiosk->setInfo($this->lng->txt("kiosk_description"));

        // kiosk mode options
        $kiosktitle = new ilCheckboxGroupInputGUI($this->lng->txt("kiosk_options"), "kiosk_options");
        $kiosktitle->addOption(new ilCheckboxOption($this->lng->txt("kiosk_show_title"), 'kiosk_title', ''));
        $kiosktitle->addOption(new ilCheckboxOption($this->lng->txt("kiosk_show_participant"), 'kiosk_participant', ''));
        $values = array();
        if ($this->testOBJ->getShowKioskModeTitle()) {
            array_push($values, 'kiosk_title');
        }
        if ($this->testOBJ->getShowKioskModeParticipant()) {
            array_push($values, 'kiosk_participant');
        }
        $kiosktitle->setValue($values);
        $kiosktitle->setInfo($this->lng->txt("kiosk_options_desc"));
        $kiosk->addSubItem($kiosktitle);

        $form->addItem($kiosk);

        $examIdInPass = new ilCheckboxInputGUI($this->lng->txt('examid_in_test_pass'), 'examid_in_test_pass');
        $examIdInPass->setInfo($this->lng->txt('examid_in_test_pass_desc'));
        $examIdInPass->setChecked($this->testOBJ->isShowExamIdInTestPassEnabled());
        $form->addItem($examIdInPass);
    }

    private function saveTestRunProperties(ilPropertyFormGUI $form)
    {
        if (!$this->testOBJ->participantDataExist()) {
            // nr of tries (max passes)
            if ($form->getItemByPostVar('limitPasses') instanceof ilFormPropertyGUI) {
                if ($form->getItemByPostVar('limitPasses')->getChecked()) {
                    $this->testOBJ->setNrOfTries($form->getItemByPostVar('nr_of_tries')->getValue());

                    $this->testOBJ->setBlockPassesAfterPassedEnabled(
                        (bool) $form->getItemByPostVar('block_after_passed')->getChecked()
                    );
                } else {
                    $this->testOBJ->setNrOfTries(0);
                    $this->testOBJ->setBlockPassesAfterPassedEnabled(false);
                }
            }

            // pass_waiting
            if ($form->getItemByPostVar('pass_waiting_enabled') instanceof ilFormPropertyGUI) {
                if ($form->getItemByPostVar('pass_waiting_enabled')->getChecked()) {
                    $pass_waiting_values = $form->getItemByPostVar('pass_waiting');
                    
                    $pass_waiting_duration[] = sprintf("%'.02d", $pass_waiting_values->getMonths());
                    $pass_waiting_duration[] = sprintf("%'.03d", $pass_waiting_values->getDays());
                    $pass_waiting_duration[] = sprintf("%'.02d", $pass_waiting_values->getHours());
                    $pass_waiting_duration[] = sprintf("%'.02d", $pass_waiting_values->getMinutes());
                    $pass_waiting_duration[] = sprintf("%'.02d", $pass_waiting_values->getSeconds());

                    $pass_waiting_string = implode(':', $pass_waiting_duration);
                    $this->testOBJ->setPassWaiting($pass_waiting_string);
                } else {
                    $this->testOBJ->setPassWaiting("00:000:00:00:00");
                }
            }
            
            $this->testOBJ->setEnableProcessingTime($form->getItemByPostVar('chb_processing_time')->getChecked());
            if ($this->testOBJ->getEnableProcessingTime()) {
                $this->testOBJ->setProcessingTimeByMinutes($form->getItemByPostVar('processing_time')->getValue());
                $this->testOBJ->setResetProcessingTime($form->getItemByPostVar('chb_reset_processing_time')->getChecked());
            } else {
                $this->testOBJ->setProcessingTime('');
                $this->testOBJ->setResetProcessingTime(false);
            }
        }

        if ($form->getItemByPostVar('kiosk') instanceof ilFormPropertyGUI) {
            $this->testOBJ->setKioskMode($form->getInput('kiosk'));
            $kioskOptions = $form->getItemByPostVar('kiosk_options')->getValue();
            if (is_array($kioskOptions)) {
                $this->testOBJ->setShowKioskModeTitle(in_array('kiosk_title', $kioskOptions));
                $this->testOBJ->setShowKioskModeParticipant(in_array('kiosk_participant', $kioskOptions));
            } else {
                $this->testOBJ->setShowKioskModeTitle(false);
                $this->testOBJ->setShowKioskModeParticipant(false);
            }
        }

        if ($form->getItemByPostVar('examid_in_test_pass') instanceof ilFormPropertyGUI) {
            $value = $form->getItemByPostVar('examid_in_test_pass')->getChecked();
            $this->testOBJ->setShowExamIdInTestPassEnabled($value);
        }
    }

    private function addQuestionBehaviourProperties(ilPropertyFormGUI $form)
    {
        $fields = array(
            'title_output', 'autosave', 'chb_shuffle_questions', 'chb_shuffle_questions',
            'offer_hints', 'instant_feedback_contents', 'instant_feedback_trigger',
            'answer_fixation_handling', 'obligations_enabled'
        );

        if ($this->isSectionHeaderRequired($fields) || $this->isCharSelectorPropertyRequired()) {
            // sequence properties
            $seqheader = new ilFormSectionHeaderGUI();
            $seqheader->setTitle($this->lng->txt("tst_presentation_properties"));
            $form->addItem($seqheader);
        }

        // question title output
        $title_output = new ilRadioGroupInputGUI($this->lng->txt("tst_title_output"), "title_output");
        $title_output->addOption(new ilRadioOption($this->lng->txt("tst_title_output_full"), 0, ''));
        $title_output->addOption(new ilRadioOption($this->lng->txt("tst_title_output_hide_points"), 1, ''));
        $title_output->addOption(new ilRadioOption($this->lng->txt("tst_title_output_no_title"), 2, ''));
        $title_output->setValue($this->testOBJ->getTitleOutput());
        $form->addItem($title_output);

        // Autosave
        $autosave_output = new ilCheckboxInputGUI($this->lng->txt('autosave'), 'autosave');
        $autosave_output->setValue(1);
        $autosave_output->setChecked($this->testOBJ->getAutosave());
        $autosave_output->setInfo($this->lng->txt('autosave_info'));
        $autosave_interval = new ilTextInputGUI($this->lng->txt('autosave_ival'), 'autosave_ival');
        $autosave_interval->setSize(10);
        $autosave_interval->setValue($this->testOBJ->getAutosaveIval() / 1000);
        $autosave_interval->setSuffix($this->lng->txt('seconds'));
        $autosave_output->addSubItem($autosave_interval);
        $form->addItem($autosave_output);

        // shuffle questions
        $shuffle = new ilCheckboxInputGUI($this->lng->txt("tst_shuffle_questions"), "chb_shuffle_questions");
        $shuffle->setValue(1);
        $shuffle->setChecked($this->testOBJ->getShuffleQuestions());
        $shuffle->setInfo($this->lng->txt("tst_shuffle_questions_description"));
        $form->addItem($shuffle);

        // offer hints
        $checkBoxOfferHints = new ilCheckboxInputGUI($this->lng->txt('tst_setting_offer_hints_label'), 'offer_hints');
        $checkBoxOfferHints->setChecked($this->testOBJ->isOfferingQuestionHintsEnabled());
        $checkBoxOfferHints->setInfo($this->lng->txt('tst_setting_offer_hints_info'));
        $form->addItem($checkBoxOfferHints);

        // instant feedback
        $instant_feedback_enabled = new ilCheckboxInputGUI($this->lng->txt('tst_instant_feedback'), 'instant_feedback_enabled');
        $instant_feedback_enabled->setInfo($this->lng->txt('tst_instant_feedback_desc'));
        $instant_feedback_enabled->setChecked($this->testOBJ->isAnyInstantFeedbackOptionEnabled());
        $form->addItem($instant_feedback_enabled);
        $instant_feedback_contents = new ilCheckboxGroupInputGUI($this->lng->txt('tst_instant_feedback_contents'), 'instant_feedback_contents');
        $instant_feedback_contents->setRequired(true);
        $instant_feedback_contents->addOption(new ilCheckboxOption(
            $this->lng->txt('tst_instant_feedback_results'),
            'instant_feedback_points',
            $this->lng->txt('tst_instant_feedback_results_desc')
        ));
        $instant_feedback_contents->addOption(new ilCheckboxOption(
            $this->lng->txt('tst_instant_feedback_answer_generic'),
            'instant_feedback_generic',
            $this->lng->txt('tst_instant_feedback_answer_generic_desc')
        ));
        $instant_feedback_contents->addOption(new ilCheckboxOption(
            $this->lng->txt('tst_instant_feedback_answer_specific'),
            'instant_feedback_specific',
            $this->lng->txt('tst_instant_feedback_answer_specific_desc')
        ));
        $instant_feedback_contents->addOption(new ilCheckboxOption(
            $this->lng->txt('tst_instant_feedback_solution'),
            'instant_feedback_solution',
            $this->lng->txt('tst_instant_feedback_solution_desc')
        ));
        $instant_feedback_contents->setValue($this->testOBJ->getInstantFeedbackOptionsAsArray());
        $instant_feedback_enabled->addSubItem($instant_feedback_contents);
        $instant_feedback_trigger = new ilRadioGroupInputGUI(
            $this->lng->txt('tst_instant_feedback_trigger'),
            'instant_feedback_trigger'
        );
        $ifbTriggerOpt = new ilRadioOption(
            $this->lng->txt('tst_instant_feedback_trigger_manual'),
            self::INSTANT_FEEDBACK_TRIGGER_MANUAL
        );
        $ifbTriggerOpt->setInfo($this->lng->txt('tst_instant_feedback_trigger_manual_desc'));
        $instant_feedback_trigger->addOption($ifbTriggerOpt);
        $ifbTriggerOpt = new ilRadioOption(
            $this->lng->txt('tst_instant_feedback_trigger_forced'),
            self::INSTANT_FEEDBACK_TRIGGER_FORCED
        );
        $ifbTriggerOpt->setInfo($this->lng->txt('tst_instant_feedback_trigger_forced_desc'));
        $instant_feedback_trigger->addOption($ifbTriggerOpt);
        $instant_feedback_trigger->setValue($this->testOBJ->isForceInstantFeedbackEnabled());
        $instant_feedback_enabled->addSubItem($instant_feedback_trigger);
        
        $answerFixation = new ilRadioGroupInputGUI(
            $this->lng->txt('tst_answer_fixation_handling'),
            'answer_fixation_handling'
        );
        $radioOption = new ilRadioOption(
            $this->lng->txt('tst_answer_fixation_none'),
            self::ANSWER_FIXATION_NONE
        );
        $radioOption->setInfo($this->lng->txt('tst_answer_fixation_none_desc'));
        $answerFixation->addOption($radioOption);
        $radioOption = new ilRadioOption(
            $this->lng->txt('tst_answer_fixation_on_instant_feedback'),
            self::ANSWER_FIXATION_ON_INSTANT_FEEDBACK
        );
        $radioOption->setInfo($this->lng->txt('tst_answer_fixation_on_instant_feedback_desc'));
        $answerFixation->addOption($radioOption);
        $radioOption = new ilRadioOption(
            $this->lng->txt('tst_answer_fixation_on_followup_question'),
            self::ANSWER_FIXATION_ON_FOLLOWUP_QUESTION
        );
        $radioOption->setInfo($this->lng->txt('tst_answer_fixation_on_followup_question_desc'));
        $answerFixation->addOption($radioOption);
        $radioOption = new ilRadioOption(
            $this->lng->txt('tst_answer_fixation_on_instantfb_or_followupqst'),
            self::ANSWER_FIXATION_ON_IFB_OR_FUQST
        );
        $radioOption->setInfo($this->lng->txt('tst_answer_fixation_on_instantfb_or_followupqst_desc'));
        $answerFixation->addOption($radioOption);
        $answerFixation->setValue($this->getAnswerFixationSettingsAsFormValue());
        $form->addItem($answerFixation);
        
        // enable obligations
        $checkBoxEnableObligations = new ilCheckboxInputGUI($this->lng->txt('tst_setting_enable_obligations_label'), 'obligations_enabled');
        $checkBoxEnableObligations->setChecked($this->testOBJ->areObligationsEnabled());
        $checkBoxEnableObligations->setInfo($this->lng->txt('tst_setting_enable_obligations_info'));
        $form->addItem($checkBoxEnableObligations);

        // selector for unicode characters
        if ($this->isCharSelectorPropertyRequired()) {
            require_once 'Services/UIComponent/CharSelector/classes/class.ilCharSelectorGUI.php';
            $char_selector = new ilCharSelectorGUI(ilCharSelectorConfig::CONTEXT_TEST);
            $char_selector->getConfig()->setAvailability($this->testOBJ->getCharSelectorAvailability());
            $char_selector->getConfig()->setDefinition($this->testOBJ->getCharSelectorDefinition());
            $char_selector->addFormProperties($form);
            $char_selector->setFormValues($form);
        }
        
        if ($this->testOBJ->participantDataExist()) {
            $checkBoxOfferHints->setDisabled(true);
            $instant_feedback_enabled->setDisabled(true);
            $instant_feedback_trigger->setDisabled(true);
            $instant_feedback_contents->setDisabled(true);
            $answerFixation->setDisabled(true);
            $checkBoxEnableObligations->setDisabled(true);
        }
    }

    private function saveQuestionBehaviourProperties(ilPropertyFormGUI $form)
    {
        if ($form->getItemByPostVar('title_output') instanceof ilFormPropertyGUI) {
            $this->testOBJ->setTitleOutput($form->getItemByPostVar('title_output')->getValue());
        }

        if ($form->getItemByPostVar('autosave') instanceof ilFormPropertyGUI) {
            $this->testOBJ->setAutosave($form->getItemByPostVar('autosave')->getChecked());
            $this->testOBJ->setAutosaveIval($form->getItemByPostVar('autosave_ival')->getValue() * 1000);
        }

        if ($form->getItemByPostVar('chb_shuffle_questions') instanceof ilFormPropertyGUI) {
            $this->testOBJ->setShuffleQuestions($form->getItemByPostVar('chb_shuffle_questions')->getChecked());
        }
        
        if (!$this->testOBJ->participantDataExist() && $this->formPropertyExists($form, 'offer_hints')) {
            $this->testOBJ->setOfferingQuestionHintsEnabled($form->getItemByPostVar('offer_hints')->getChecked());
        }

        if (!$this->testOBJ->participantDataExist() && $this->formPropertyExists($form, 'instant_feedback_enabled')) {
            if ($form->getItemByPostVar('instant_feedback_enabled')->getChecked()) {
                if ($this->formPropertyExists($form, 'instant_feedback_contents')) {
                    $this->testOBJ->setInstantFeedbackOptionsByArray(
                        $form->getItemByPostVar('instant_feedback_contents')->getValue()
                    );
                }
                if ($this->formPropertyExists($form, 'instant_feedback_trigger')) {
                    $this->testOBJ->setForceInstantFeedbackEnabled(
                        (bool) $form->getItemByPostVar('instant_feedback_trigger')->getValue()
                    );
                }
            } else {
                $this->testOBJ->setInstantFeedbackOptionsByArray(array());
                $this->testOBJ->setForceInstantFeedbackEnabled(false);
            }
        }

        if (!$this->testOBJ->participantDataExist() && $this->formPropertyExists($form, 'answer_fixation_handling')) {
            $this->setAnswerFixationSettingsByFormValue($form->getItemByPostVar('answer_fixation_handling')->getValue());
        }

        if (!$this->testOBJ->participantDataExist() && $this->formPropertyExists($form, 'obligations_enabled')) {
            $this->testOBJ->setObligationsEnabled($form->getItemByPostVar('obligations_enabled')->getChecked());
        }

        if ($this->isCharSelectorPropertyRequired()) {
            require_once 'Services/UIComponent/CharSelector/classes/class.ilCharSelectorGUI.php';
            $char_selector = new ilCharSelectorGUI(ilCharSelectorConfig::CONTEXT_TEST);
            $char_selector->addFormProperties($form);
            $char_selector->getFormValues($form);
            $this->testOBJ->setCharSelectorAvailability($char_selector->getConfig()->getAvailability());
            $this->testOBJ->setCharSelectorDefinition($char_selector->getConfig()->getDefinition());
        }
    }

    private function addTestSequenceProperties(ilPropertyFormGUI $form)
    {
        // sequence properties
        $seqheader = new ilFormSectionHeaderGUI();
        $seqheader->setTitle($this->lng->txt("tst_sequence_properties"));
        $form->addItem($seqheader);

        // use previous answers
        $prevanswers = new ilCheckboxInputGUI($this->lng->txt("tst_use_previous_answers"), "chb_use_previous_answers");
        $prevanswers->setValue(1);
        $prevanswers->setChecked($this->testOBJ->getUsePreviousAnswers());
        $prevanswers->setInfo($this->lng->txt("tst_use_previous_answers_description"));
        $form->addItem($prevanswers);

        // show suspend test
        $cancel = new ilCheckboxInputGUI($this->lng->txt("tst_show_cancel"), "chb_show_cancel");
        $cancel->setValue(1);
        $cancel->setChecked($this->testOBJ->getShowCancel());
        $cancel->setInfo($this->lng->txt("tst_show_cancel_description"));
        $form->addItem($cancel);

        // postpone questions
        $postpone = new ilRadioGroupInputGUI($this->lng->txt("tst_postpone"), "postpone");
        $postpone->addOption(new ilRadioOption(
            $this->lng->txt("tst_postpone_off"),
            0,
            $this->lng->txt("tst_postpone_off_desc")
        ));
        $postpone->addOption(new ilRadioOption(
            $this->lng->txt("tst_postpone_on"),
            1,
            $this->lng->txt("tst_postpone_on_desc")
        ));
        $postpone->setValue((int) $this->testOBJ->getSequenceSettings());
        $form->addItem($postpone);

        // show list of questions
        $list_of_questions = new ilCheckboxInputGUI($this->lng->txt("tst_show_summary"), "list_of_questions");
        //$list_of_questions->setOptionTitle($this->lng->txt("tst_show_summary"));
        $list_of_questions->setValue(1);
        $list_of_questions->setChecked($this->testOBJ->getListOfQuestions());
        $list_of_questions->setInfo($this->lng->txt("tst_show_summary_description"));

        $list_of_questions_options = new ilCheckboxGroupInputGUI('', "list_of_questions_options");
        $list_of_questions_options->addOption(new ilCheckboxOption($this->lng->txt("tst_list_of_questions_start"), 'chb_list_of_questions_start', ''));
        $list_of_questions_options->addOption(new ilCheckboxOption($this->lng->txt("tst_list_of_questions_end"), 'chb_list_of_questions_end', ''));
        $list_of_questions_options->addOption(new ilCheckboxOption($this->lng->txt("tst_list_of_questions_with_description"), 'chb_list_of_questions_with_description', ''));
        $values = array();
        if ($this->testOBJ->getListOfQuestionsStart()) {
            array_push($values, 'chb_list_of_questions_start');
        }
        if ($this->testOBJ->getListOfQuestionsEnd()) {
            array_push($values, 'chb_list_of_questions_end');
        }
        if ($this->testOBJ->getListOfQuestionsDescription()) {
            array_push($values, 'chb_list_of_questions_with_description');
        }
        $list_of_questions_options->setValue($values);

        $list_of_questions->addSubItem($list_of_questions_options);
        $form->addItem($list_of_questions);

        // show question marking
        $marking = new ilCheckboxInputGUI($this->lng->txt("question_marking"), "chb_show_marker");
        $marking->setValue(1);
        $marking->setChecked($this->testOBJ->getShowMarker());
        $marking->setInfo($this->lng->txt("question_marking_description"));
        $form->addItem($marking);
    }

    private function saveTestSequenceSettings(ilPropertyFormGUI $form)
    {
        if ($this->formPropertyExists($form, 'chb_use_previous_answers')) {
            $this->testOBJ->setUsePreviousAnswers($form->getInput('chb_use_previous_answers'));
        }

        if ($this->formPropertyExists($form, 'chb_show_cancel')) {
            $this->testOBJ->setShowCancel($form->getItemByPostVar('chb_show_cancel')->getChecked());
        }

        if ($this->formPropertyExists($form, 'postpone')) {
            $this->testOBJ->setPostponingEnabled((bool) $form->getItemByPostVar('postpone')->getValue());
        }

        $this->testOBJ->setListOfQuestions($form->getItemByPostVar('list_of_questions')->getChecked());
        $listOfQuestionsOptions = $form->getItemByPostVar('list_of_questions_options')->getValue();
        if (is_array($listOfQuestionsOptions)) {
            $this->testOBJ->setListOfQuestionsStart(in_array('chb_list_of_questions_start', $listOfQuestionsOptions));
            $this->testOBJ->setListOfQuestionsEnd(in_array('chb_list_of_questions_end', $listOfQuestionsOptions));
            $this->testOBJ->setListOfQuestionsDescription(in_array('chb_list_of_questions_with_description', $listOfQuestionsOptions));
        } else {
            $this->testOBJ->setListOfQuestionsStart(0);
            $this->testOBJ->setListOfQuestionsEnd(0);
            $this->testOBJ->setListOfQuestionsDescription(0);
        }

        if ($this->formPropertyExists($form, 'chb_show_marker')) {
            $this->testOBJ->setShowMarker($form->getItemByPostVar('chb_show_marker')->getChecked());
        }
    }

    private function addTestFinishProperties(ilPropertyFormGUI $form)
    {
        $testFinishHeader = new ilFormSectionHeaderGUI();
        $testFinishHeader->setTitle($this->lng->txt("tst_final_information"));
        $form->addItem($testFinishHeader);

        // examview
        $enable_examview = new ilCheckboxInputGUI($this->lng->txt("enable_examview"), 'enable_examview');
        $enable_examview->setValue(1);
        $enable_examview->setChecked($this->testOBJ->getEnableExamview());
        $enable_examview->setInfo($this->lng->txt("enable_examview_desc"));
        $show_examview_pdf = new ilCheckboxInputGUI('', 'show_examview_pdf');
        $show_examview_pdf->setValue(1);
        $show_examview_pdf->setChecked($this->testOBJ->getShowExamviewPdf());
        $show_examview_pdf->setOptionTitle($this->lng->txt("show_examview_pdf"));
        $enable_examview->addSubItem($show_examview_pdf);
        $form->addItem($enable_examview);

        // show final statement
        $showfinal = new ilCheckboxInputGUI($this->lng->txt("final_statement"), "showfinalstatement");
        $showfinal->setChecked($this->testOBJ->getShowFinalStatement());
        $showfinal->setInfo($this->lng->txt("final_statement_show_desc"));
        $form->addItem($showfinal);
        // final statement
        $finalstatement = new ilTextAreaInputGUI($this->lng->txt("final_statement"), "finalstatement");
        $finalstatement->setRequired(true);
        $finalstatement->setValue($this->testOBJ->prepareTextareaOutput($this->testOBJ->getFinalStatement(), false, true));
        $finalstatement->setRows(10);
        $finalstatement->setCols(80);
        $finalstatement->setUseRte(true);
        $finalstatement->addPlugin("latex");
        $finalstatement->addButton("latex");
        $finalstatement->setRTESupport($this->testOBJ->getId(), "tst", "assessment");
        $finalstatement->setRteTagSet('full');
        $showfinal->addSubItem($finalstatement);

        $redirection_mode = $this->testOBJ->getRedirectionMode();
        $rm_enabled = new ilCheckboxInputGUI($this->lng->txt('redirect_after_finishing_tst'), 'redirection_enabled');
        $rm_enabled->setInfo($this->lng->txt('redirect_after_finishing_tst_desc'));
        $rm_enabled->setChecked($redirection_mode == '0' ? false : true);
        $radio_rm = new ilRadioGroupInputGUI($this->lng->txt('redirect_after_finishing_rule'), 'redirection_mode');
        $always = new ilRadioOption($this->lng->txt('redirect_always'), REDIRECT_ALWAYS);
        $radio_rm->addOption($always);
        $kiosk = new ilRadioOption($this->lng->txt('redirect_in_kiosk_mode'), REDIRECT_KIOSK);
        $radio_rm->addOption($kiosk);
        $radio_rm->setValue(in_array($redirection_mode, array(REDIRECT_ALWAYS, REDIRECT_KIOSK)) ? $redirection_mode : REDIRECT_ALWAYS);
        $rm_enabled->addSubItem($radio_rm);
        $redirection_url = new ilTextInputGUI($this->lng->txt('redirection_url'), 'redirection_url');
        $redirection_url->setValue((string) $this->testOBJ->getRedirectionUrl());
        $redirection_url->setRequired(true);
        $rm_enabled->addSubItem($redirection_url);

        $form->addItem($rm_enabled);

        // Sign submission
        $sign_submission = $this->testOBJ->getSignSubmission();
        $sign_submission_enabled = new ilCheckboxInputGUI($this->lng->txt('sign_submission'), 'sign_submission');
        $sign_submission_enabled->setChecked($sign_submission);
        $sign_submission_enabled->setInfo($this->lng->txt('sign_submission_info'));
        $form->addItem($sign_submission_enabled);

        // mail notification
        $mailnotification = new ilCheckboxInputGUI($this->lng->txt("tst_finish_notification"), "mailnotification");
        $mailnotification->setInfo($this->lng->txt("tst_finish_notification_desc"));
        $mailnotification->setChecked($this->testOBJ->getMailNotification() > 0);
        $form->addItem($mailnotification);

        $mailnotificationContent = new ilRadioGroupInputGUI($this->lng->txt("tst_finish_notification_content"), "mailnotification_content");
        $mailnotificationContent->addOption(new ilRadioOption($this->lng->txt("tst_finish_notification_simple"), 1, ''));
        $mailnotificationContent->addOption(new ilRadioOption($this->lng->txt("tst_finish_notification_advanced"), 2, ''));
        $mailnotificationContent->setValue($this->testOBJ->getMailNotification() ? $this->testOBJ->getMailNotification() : 1);
        $mailnotificationContent->setRequired(true);
        $mailnotification->addSubItem($mailnotificationContent);

        $mailnottype = new ilCheckboxInputGUI('', "mailnottype");
        $mailnottype->setValue(1);
        $mailnottype->setOptionTitle($this->lng->txt("mailnottype"));
        $mailnottype->setChecked($this->testOBJ->getMailNotificationType());
        $mailnotification->addSubItem($mailnottype);
    }

    private function saveTestFinishProperties(ilPropertyFormGUI $form)
    {
        if ($this->formPropertyExists($form, 'enable_examview')) {
            $this->testOBJ->setEnableExamview($form->getItemByPostVar('enable_examview')->getChecked());
            $this->testOBJ->setShowExamviewPdf($form->getItemByPostVar('show_examview_pdf')->getChecked());
        }

        $this->testOBJ->setShowFinalStatement($form->getItemByPostVar('showfinalstatement')->getChecked());
        $this->testOBJ->setFinalStatement($form->getItemByPostVar('finalstatement')->getValue());

        if ($form->getItemByPostVar('redirection_enabled')->getChecked()) {
            $this->testOBJ->setRedirectionMode($form->getItemByPostVar('redirection_mode')->getValue());
        } else {
            $this->testOBJ->setRedirectionMode(REDIRECT_NONE);
        }
        if (strlen($form->getItemByPostVar('redirection_url')->getValue())) {
            $this->testOBJ->setRedirectionUrl($form->getItemByPostVar('redirection_url')->getValue());
        } else {
            $this->testOBJ->setRedirectionUrl(null);
        }

        if ($this->formPropertyExists($form, 'sign_submission')) {
            $this->testOBJ->setSignSubmission($form->getItemByPostVar('sign_submission')->getChecked());
        }

        if ($this->formPropertyExists($form, 'mailnotification') && $form->getItemByPostVar('mailnotification')->getChecked()) {
            $this->testOBJ->setMailNotification($form->getItemByPostVar('mailnotification_content')->getValue());
            $this->testOBJ->setMailNotificationType($form->getItemByPostVar('mailnottype')->getChecked());
        } else {
            $this->testOBJ->setMailNotification(0);
            $this->testOBJ->setMailNotificationType(false);
        }
    }
    
    protected function setAnswerFixationSettingsByFormValue($formValue)
    {
        switch ($formValue) {
            case self::ANSWER_FIXATION_NONE:
                $this->testOBJ->setInstantFeedbackAnswerFixationEnabled(false);
                $this->testOBJ->setFollowupQuestionAnswerFixationEnabled(false);
                break;
            case self::ANSWER_FIXATION_ON_INSTANT_FEEDBACK:
                $this->testOBJ->setInstantFeedbackAnswerFixationEnabled(true);
                $this->testOBJ->setFollowupQuestionAnswerFixationEnabled(false);
                break;
            case self::ANSWER_FIXATION_ON_FOLLOWUP_QUESTION:
                $this->testOBJ->setInstantFeedbackAnswerFixationEnabled(false);
                $this->testOBJ->setFollowupQuestionAnswerFixationEnabled(true);
                break;
            case self::ANSWER_FIXATION_ON_IFB_OR_FUQST:
                $this->testOBJ->setInstantFeedbackAnswerFixationEnabled(true);
                $this->testOBJ->setFollowupQuestionAnswerFixationEnabled(true);
                break;
        }
    }
    
    protected function getAnswerFixationSettingsAsFormValue()
    {
        if ($this->testOBJ->isInstantFeedbackAnswerFixationEnabled() && $this->testOBJ->isFollowupQuestionAnswerFixationEnabled()) {
            return self::ANSWER_FIXATION_ON_IFB_OR_FUQST;
        }
        
        if ($this->testOBJ->isFollowupQuestionAnswerFixationEnabled()) {
            return self::ANSWER_FIXATION_ON_FOLLOWUP_QUESTION;
        }
        
        if ($this->testOBJ->isInstantFeedbackAnswerFixationEnabled()) {
            return self::ANSWER_FIXATION_ON_INSTANT_FEEDBACK;
        }
        
        return self::ANSWER_FIXATION_NONE;
    }
}