class.assOrderingQuestionGUI.php

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<?php
 
class assOrderingQuestionGUI extends assQuestionGUI implements ilGuiQuestionScoringAdjustable, ilGuiAnswerScoringAdjustable
{
    public const CMD_EDIT_NESTING = 'editNesting';
    public const CMD_SAVE_NESTING = 'saveNesting';
    public const CMD_SWITCH_TO_TERMS = 'changeToText';
    public const CMD_SWITCH_TO_PICTURESS = 'changeToPictures';
 
    public const TAB_EDIT_QUESTION = 'edit_question';
    public const TAB_EDIT_NESTING = 'edit_nesting';
 
    public const F_USE_NESTED = 'nested_answers';
    public const F_NESTED_ORDER = 'order_elems';
    public const F_NESTED_ORDER_ORDER = 'content';
    public const F_NESTED_ORDER_INDENT = 'indentation';
    public const F_NESTED_IDENTIFIER_PREFIX = ilIdentifiedMultiValuesJsPositionIndexRemover::IDENTIFIER_INDICATOR_PREFIX;
 
    public assQuestion $object;
 
    public $old_ordering_depth = [];
    public $leveled_ordering = [];
 
    public function __construct($id = -1)
    {
        parent::__construct();
        $this->object = new assOrderingQuestion();
        if ($id >= 0) {
            $this->object->loadFromDb($id);
        }
    }
 
    public function changeToPictures(): void
    {
        $this->object->setContentType($this->object::OQ_CT_PICTURES);
        $this->object->saveToDb();
 
        $values = $this->request_data_collector->getParsedBody();
        $values['thumb_geometry'] = $this->object->getThumbSize();
        $this->buildEditFormAfterTypeChange($values);
    }
 
    public function changeToText(): void
    {
        $ordering_element_list = $this->object->getOrderingElementList();
        foreach ($ordering_element_list as $element) {
            $this->object->dropImageFile($element->getContent());
        }
 
        $this->object->setContentType($this->object::OQ_CT_TERMS);
        $this->object->saveToDb();
 
        $this->buildEditFormAfterTypeChange($this->request_data_collector->getParsedBody());
    }
 
    private function buildEditFormAfterTypeChange(array $values): void
    {
        $form = $this->buildEditForm();
 
        $ordering_element_list = $this->object->getOrderingElementList();
        $ordering_element_list->resetElements();
 
        $values[assOrderingQuestion::ORDERING_ELEMENT_FORM_FIELD_POSTVAR] = [];
        $form->setValuesByArray($values);
        $form->getItemByPostVar(assOrderingQuestion::ORDERING_ELEMENT_FORM_FIELD_POSTVAR)->setElementList($ordering_element_list);
        $this->renderEditForm($form);
        $this->addEditSubtabs();
    }
 
    public function saveNesting()
    {
        $form = $this->buildNestingForm();
        $form->setValuesByPost();
        if ($form->checkInput()) {
            $post = $this->request_data_collector->raw(self::F_NESTED_ORDER);
            $list = $this->object->getOrderingElementList();
 
            $ordered = [];
            foreach (array_keys($post[self::F_NESTED_ORDER_ORDER]) as $idx => $identifier) {
                $element_identifier = str_replace(self::F_NESTED_IDENTIFIER_PREFIX, '', $identifier);
                $element = $list->getElementByRandomIdentifier($element_identifier);
 
                $ordered[] = $element
                    ->withPosition($idx)
                    ->withIndentation($post[self::F_NESTED_ORDER_INDENT][$identifier]);
            }
 
            $list = $list->withElements($ordered);
            $this->object->setOrderingElementList($list);
            $this->tpl->setOnScreenMessage('success', $this->lng->txt('saved_successfully'), true);
        } else {
            $this->tpl->setOnScreenMessage('error', $this->lng->txt('form_input_not_valid'), true);
        }
 
        $this->editNesting();
    }
 
 
    public function removeElementImage()
    {
        $this->uploadElementImage();
    }
 
    public function uploadElementImage(): void
    {
        $form = $this->buildEditForm();
        $form->setValuesByPost();
 
        $submitted_list = $this->fetchSolutionListFromSubmittedForm($form);
 
        $elements = [];
        foreach ($submitted_list->getElements() as $submitted_element) {
            if ($submitted_element->isImageUploadAvailable()) {
                $filename = $this->object->storeImageFile(
                    $submitted_element->getUploadImageFile(),
                    $submitted_element->getUploadImageName()
                );
 
                if (is_null($filename)) {
                    $this->tpl->setOnScreenMessage('failure', $this->lng->txt('file_no_valid_file_type'));
                } else {
                    $submitted_element = $submitted_element->withContent($filename);
                }
            }
 
            if ($submitted_element->isImageRemovalRequest()) {
                $this->object->dropImageFile($submitted_element->getContent());
                $submitted_element = $submitted_element->withContent('');
            }
 
            $elements[] = $submitted_element;
        }
 
        $list = $this->object->getOrderingElementList()->withElements($elements);
        $this->object->setOrderingElementList($list);
 
        $this->writeQuestionGenericPostData();
        $this->writeQuestionSpecificPostData($form);
 
        $this->editQuestion();
    }
 
    public function writeQuestionSpecificPostData(ilPropertyFormGUI $form): void
    {
        $thumb_size = $this->request_data_collector->int('thumb_geometry');
        if ($thumb_size !== 0
            && $thumb_size !== $this->object->getThumbSize()) {
            $this->object->setThumbSize($thumb_size);
            $this->updateImageFiles();
        }
 
        $this->object->setPoints($this->request_data_collector->float('points'));
 
        $use_nested = $this->request_data_collector->int(self::F_USE_NESTED) === 1;
        $this->object->setNestingType($use_nested);
    }
 
 
    protected function fetchSolutionListFromSubmittedForm(ilPropertyFormGUI $form): ilAssOrderingElementList
    {
        $list = $form->getItemByPostVar(assOrderingQuestion::ORDERING_ELEMENT_FORM_FIELD_POSTVAR)
            ->getElementList($this->object->getId());
 
        $use_nested = $this->request_data_collector->int(self::F_USE_NESTED) === 1;
 
        if ($use_nested) {
            $existing_list = $this->object->getOrderingElementList();
 
            $nu = [];
            $parent_indent = -1;
            foreach ($list->getElements() as $element) {
                $element = $list->ensureValidIdentifiers($element);
 
                if ($existing = $existing_list->getElementByRandomIdentifier($element->getRandomIdentifier())) {
                    if ($existing->getIndentation() == $parent_indent + 1) {
                        $element = $element
                            ->withIndentation($existing->getIndentation());
                    }
                }
                $parent_indent = $element->getIndentation();
                $nu[] = $element;
            }
            $list = $list->withElements($nu);
        }
 
        return $list;
    }
 
    protected function updateImageFiles(): void
    {
        $element_list = $this->object->getOrderingElementList();
        $elements = [];
        foreach ($element_list->getElements() as $element) {
            if ($element->getContent() === '') {
                continue;
            }
            $filename = $this->object->updateImageFile(
                $element->getContent()
            );
 
            $elements[] = $element->withContent($filename);
        }
 
        $list = $this->object->getOrderingElementList()->withElements($elements);
        $this->object->setOrderingElementList($list);
    }
 
    public function writeAnswerSpecificPostData(ilPropertyFormGUI $form): void
    {
        $this->object->setOrderingElementList(
            $this->fetchSolutionListFromSubmittedForm($form)
        );
    }
 
    public function populateAnswerSpecificFormPart(ilPropertyFormGUI $form): ilPropertyFormGUI
    {
        $header = new ilFormSectionHeaderGUI();
        $header->setTitle($this->lng->txt('oq_header_ordering_elements'));
        $form->addItem($header);
 
        $orderingElementInput = $this->object->buildOrderingElementInputGui();
        $this->object->initOrderingElementAuthoringProperties($orderingElementInput);
 
        $list = $this->object->getOrderingElementList();
        $orderingElementInput->setElementList($list);
        $form->addItem($orderingElementInput);
 
        return $form;
    }
 
    public function populateQuestionSpecificFormPart(\ilPropertyFormGUI $form): ilPropertyFormGUI
    {
        if ($this->object->isImageOrderingType()) {
            $thumb_size = new ilNumberInputGUI($this->lng->txt('thumb_size'), 'thumb_geometry');
            $thumb_size->setValue($this->object->getThumbSize());
            $thumb_size->setRequired(true);
            $thumb_size->setMaxLength(6);
            $thumb_size->setMinValue($this->object->getMinimumThumbSize());
            $thumb_size->setMaxValue($this->object->getMaximumThumbSize());
            $thumb_size->setSize(6);
            $thumb_size->setInfo($this->lng->txt('thumb_size_info'));
            $form->addItem($thumb_size);
        }
 
        // points
        $points = new ilNumberInputGUI($this->lng->txt("points"), "points");
        $points->allowDecimals(true);
        $points->setValue($this->object->getPoints());
        $points->setRequired(true);
        $points->setSize(3);
        $points->setMinValue(0);
        $points->setMinvalueShouldBeGreater(true);
        $form->addItem($points);
 
        if (!$this->isInLearningModuleContext()) {
            $nested_answers = new ilSelectInputGUI(
                $this->lng->txt('qst_use_nested_answers'),
                self::F_USE_NESTED
            );
            $nested_answers_options = [
                0 => $this->lng->txt('qst_nested_nested_answers_off'),
                1 => $this->lng->txt('qst_nested_nested_answers_on')
            ];
            $nested_answers->setOptions($nested_answers_options);
            $nested_answers->setValue($this->object->isOrderingTypeNested());
            $form->addItem($nested_answers);
        }
 
        return $form;
    }
 
    protected function writePostData(bool $always = false): int
    {
        $form = $this->buildEditForm();
        $form->setValuesByPost();
 
        if (!$form->checkInput()) {
            $this->renderEditForm($form);
            $this->addEditSubtabs(self::TAB_EDIT_QUESTION);
            return 1; // return 1 = something went wrong, no saving happened
        }
 
        $this->saveTaxonomyAssignments();
        $this->writeQuestionGenericPostData();
        $this->writeAnswerSpecificPostData($form);
        $this->writeQuestionSpecificPostData($form);
 
        $this->resetSavedPreviewSession();
 
        return 0; // return 0 = all fine, was saved either forced or validated
    }
 
    protected function addEditSubtabs($active = self::TAB_EDIT_QUESTION)
    {
        $tabs = $this->getTabs();
        $tabs->addSubTab(
            self::TAB_EDIT_QUESTION,
            $this->lng->txt('edit_question'),
            $this->ctrl->getLinkTarget($this, 'editQuestion')
        );
        if ($this->object->isOrderingTypeNested() && !$this->isInLearningModuleContext()) {
            $tabs->addSubTab(
                self::TAB_EDIT_NESTING,
                $this->lng->txt('tab_nest_answers'),
                $this->ctrl->getLinkTarget($this, self::CMD_EDIT_NESTING)
            );
        }
        $tabs->setTabActive('edit_question');
        $tabs->setSubTabActive($active);
    }
 
    public function editQuestion(
        bool $checkonly = false,
        ?bool $is_save_cmd = null
    ): bool {
        $this->renderEditForm($this->buildEditForm());
        $this->addEditSubtabs(self::TAB_EDIT_QUESTION);
        return false;
    }
 
    public function editNesting()
    {
        $this->renderEditForm($this->buildNestingForm());
        $this->addEditSubtabs(self::TAB_EDIT_NESTING);
        $this->tpl->addCss(ilObjStyleSheet::getContentStylePath(0));
        $this->tpl->addCss(ilObjStyleSheet::getSyntaxStylePath());
    }
 
    protected function buildEditForm(): ilAssOrderingQuestionAuthoringFormGUI
    {
        $form = new ilAssOrderingQuestionAuthoringFormGUI();
        $form->setFormAction($this->ctrl->getFormAction($this));
        $form->setTitle($this->outQuestionType());
        $form->setMultipart($this->object->isImageOrderingType());
        $form->setTableWidth("100%");
        $form->setId("ordering");
 
        $this->addBasicQuestionFormProperties($form);
        $this->populateQuestionSpecificFormPart($form);
        $this->populateAnswerSpecificFormPart($form);
        $this->populateTaxonomyFormSection($form);
 
        $form->addSpecificOrderingQuestionCommandButtons($this->object);
        $form->addGenericAssessmentQuestionCommandButtons($this->object);
 
        return $form;
    }
 
    protected function buildNestingForm()
    {
        $form = new ilAssOrderingQuestionAuthoringFormGUI();
        $form->setFormAction($this->ctrl->getFormAction($this));
        $form->setTitle($this->outQuestionType());
        $form->setTableWidth("100%");
 
        $header = new ilFormSectionHeaderGUI();
        $header->setTitle($this->lng->txt('oq_header_ordering_elements'));
        $form->addItem($header);
 
        $orderingElementInput = $this->object->buildNestedOrderingElementInputGui();
 
        $this->object->initOrderingElementAuthoringProperties($orderingElementInput);
 
        $list = $this->object->getOrderingElementList();
        foreach ($list->getElements() as $element) {
            $element = $list->ensureValidIdentifiers($element);
        }
 
        $orderingElementInput->setElementList($list);
 
        $form->addItem($orderingElementInput);
        $form->addCommandButton(self::CMD_SAVE_NESTING, $this->lng->txt("save"));
        return $form;
    }
 
    public function supportsIntermediateSolutionOutput()
    {
        return true;
    }
 
    public function getSolutionOutput(
        int $active_id,
        ?int $pass = null,
        bool $graphical_output = false,
        bool $result_output = false,
        bool $show_question_only = true,
        bool $show_feedback = false,
        bool $show_correct_solution = false,
        bool $show_manual_scoring = false,
        bool $show_question_text = true,
        bool $show_inline_feedback = true
    ): string {
        $solution_ordering_list = $this->object->getOrderingElementListForSolutionOutput(
            $show_correct_solution,
            $active_id,
            $pass
        );
 
        $show_inline_feedback = false;
        return $this->renderSolutionOutput(
            $solution_ordering_list,
            $active_id,
            $pass,
            $graphical_output,
            $result_output,
            $show_question_only,
            $show_feedback,
            $show_correct_solution,
            $show_manual_scoring,
            $show_question_text,
            false,
            $show_inline_feedback,
        );
    }
 
    public function renderSolutionOutput(
        mixed $user_solutions,
        int $active_id,
        ?int $pass,
        bool $graphical_output = false,
        bool $result_output = false,
        bool $show_question_only = true,
        bool $show_feedback = false,
        bool $show_correct_solution = false,
        bool $show_manual_scoring = false,
        bool $show_question_text = true,
        bool $show_autosave_title = false,
        bool $show_inline_feedback = false,
    ): ?string {
        $solution_ordering_list = ($user_solutions instanceof ilAssOrderingElementList) ?
            $user_solutions : $this->object->getSolutionOrderingElementList(
                $this->object->fetchIndexedValuesFromValuePairs($user_solutions)
            );
        $answers_gui = $this->object->buildNestedOrderingElementInputGui();
 
        if ($show_correct_solution) {
            $answers_gui->setContext(ilAssNestedOrderingElementsInputGUI::CONTEXT_CORRECT_SOLUTION_PRESENTATION);
        } else {
            $answers_gui->setContext(ilAssNestedOrderingElementsInputGUI::CONTEXT_USER_SOLUTION_PRESENTATION);
        }
 
        $answers_gui->setInteractionEnabled(false);
        $answers_gui->setElementList($solution_ordering_list);
 
        if ($graphical_output) {
            $answers_gui->setShowCorrectnessIconsEnabled(true);
        }
        $answers_gui->setCorrectnessTrueElementList(
            $solution_ordering_list->getParityTrueElementList($this->object->getOrderingElementList())
        );
        $solution_html = $answers_gui->getHTML();
 
        $template = new ilTemplate('tpl.il_as_qpl_nested_ordering_output_solution.html', true, true, 'components/ILIAS/TestQuestionPool');
        $template->setVariable('SOLUTION_OUTPUT', $this->renderLatex($solution_html));
        if ($show_question_text == true) {
            $template->setVariable('QUESTIONTEXT', $this->renderLatex($this->object->getQuestionForHTMLOutput()));
        }
        $questionoutput = $template->get();
 
        $solutiontemplate = new ilTemplate('tpl.il_as_tst_solution_output.html', true, true, 'components/ILIAS/TestQuestionPool');
        $solutiontemplate->setVariable('SOLUTION_OUTPUT', $questionoutput);
 
        if ($show_feedback) {
            $feedback = '';
 
            if (!$this->isTestPresentationContext()) {
                $fb = $this->getGenericFeedbackOutput((int) $active_id, $pass);
                $feedback .= strlen($fb) ? $fb : '';
            }
 
            if ($feedback !== '') {
                $cssClass = (
                    $this->hasCorrectSolution($active_id, $pass) ?
                    ilAssQuestionFeedback::CSS_CLASS_FEEDBACK_CORRECT : ilAssQuestionFeedback::CSS_CLASS_FEEDBACK_WRONG
                );
 
                $solutiontemplate->setVariable('ILC_FB_CSS_CLASS', $cssClass);
                $solutiontemplate->setVariable('FEEDBACK', ilLegacyFormElementsUtil::prepareTextareaOutput($feedback, true));
            }
        }
 
        if ($show_question_only) {
            return $solutiontemplate->get();
        }
 
        return $this->getILIASPage($solutiontemplate->get());
 
        // is this template still in use? it is not used at this point any longer!
        // $template = new ilTemplate("tpl.il_as_qpl_ordering_output_solution.html", TRUE, TRUE, "components/ILIAS/TestQuestionPool");
    }
 
    public function getPreview(
        bool $show_question_only = false,
        bool $show_inline_feedback = false
    ): string {
        if ($this->getPreviewSession() && $this->getPreviewSession()->hasParticipantSolution()) {
            $solutionOrderingElementList = unserialize(
                $this->getPreviewSession()->getParticipantsSolution(),
                ['allowed_classes' => true]
            );
        } else {
            $solutionOrderingElementList = $this->object->getShuffledOrderingElementList();
        }
 
        $answers = $this->object->buildNestedOrderingElementInputGui();
        $answers->setNestingEnabled($this->object->isOrderingTypeNested());
        $answers->setContext(ilAssNestedOrderingElementsInputGUI::CONTEXT_QUESTION_PREVIEW);
        $answers->setInteractionEnabled($this->isInteractivePresentation());
        $answers->setElementList($solutionOrderingElementList);
 
        $template = new ilTemplate('tpl.il_as_qpl_ordering_output.html', true, true, 'components/ILIAS/TestQuestionPool');
 
        $template->setCurrentBlock('nested_ordering_output');
        $template->setVariable('NESTED_ORDERING', $this->renderLatex($answers->getHTML()));
        $template->parseCurrentBlock();
        $template->setVariable('QUESTIONTEXT', $this->renderLatex($this->object->getQuestionForHTMLOutput()));
 
        if ($show_question_only) {
            return $template->get();
        }
 
        return $this->getILIASPage($template->get());
    }
 
    public function getTestOutput(
        int $active_id,
        int $pass,
        bool $is_question_postponed = false,
        array|bool $user_post_solutions = false,
        bool $show_specific_inline_feedback = false
    ): string {
        $user_post_solutions = is_array($user_post_solutions) ? $user_post_solutions : [];
 
        $ordering_gui = $this->object->buildNestedOrderingElementInputGui();
        $ordering_gui->setNestingEnabled($this->object->isOrderingTypeNested());
 
        $solutionOrderingElementList = $this->object->getSolutionOrderingElementListForTestOutput(
            $ordering_gui,
            $user_post_solutions,
            $active_id,
            $pass
        );
 
        $template = new ilTemplate('tpl.il_as_qpl_ordering_output.html', true, true, 'components/ILIAS/TestQuestionPool');
 
        $ordering_gui->setContext(ilAssNestedOrderingElementsInputGUI::CONTEXT_USER_SOLUTION_SUBMISSION);
        $ordering_gui->setElementList($solutionOrderingElementList);
 
        $template->setCurrentBlock('nested_ordering_output');
        $template->setVariable('NESTED_ORDERING', $this->renderLatex($ordering_gui->getHTML()));
        $template->parseCurrentBlock();
 
        $template->setVariable('QUESTIONTEXT', $this->renderLatex($this->object->getQuestionForHTMLOutput()));
 
        $pageoutput = $this->outQuestionPage('', $is_question_postponed, $active_id, $template->get());
 
        return $pageoutput;
    }
 
    protected function isInteractivePresentation(): bool
    {
        if ($this->isRenderPurposePlayback()) {
            return true;
        }
 
        if ($this->isRenderPurposeDemoplay()) {
            return true;
        }
 
        return false;
    }
 
    protected function getTabs(): ilTabsGUI
    {
        global $DIC;
        return $DIC['ilTabs'];
    }
 
    public function getSpecificFeedbackOutput(array $userSolution): string
    {
        return '';
    }
 
    public function getAfterParticipationSuppressionAnswerPostVars(): array
    {
        return [];
    }
 
    public function getAfterParticipationSuppressionQuestionPostVars(): array
    {
        return [];
    }
 
    protected function getAnswerStatisticOrderingElementHtml(ilAssOrderingElement $element): ?string
    {
        if ($this->object->isImageOrderingType()) {
            $element->setImageThumbnailPrefix($this->object->getThumbPrefix());
            $element->setImagePathWeb($this->object->getImagePathWeb());
            $element->setImagePathFs($this->object->getImagePath());
 
            $src = $element->getPresentationImageUrl();
            $alt = $element->getContent();
            $content = "<img src='{$src}' alt='{$alt}' title='{$alt}'/>";
        } else {
            $content = $element->getContent();
        }
 
        return $content;
    }
 
    protected function getAnswerStatisticOrderingVariantHtml(ilAssOrderingElementList $list): string
    {
        $list = array_map(
            fn(ilAssOrderingElement $elem): string => htmlspecialchars(
                $this->getAnswerStatisticOrderingElementHtml($elem) ?? '',
                ENT_QUOTES | ENT_SUBSTITUTE,
                'utf-8'
            ),
            $list->getElements()
        );
 
        return $this->ui->renderer()->render($this->ui->factory()->listing()->unordered($list));
    }
 
    public function getAnswersFrequency($relevantAnswers, $questionIndex): array
    {
        $answersByActiveAndPass = [];
 
        foreach ($relevantAnswers as $row) {
            $key = $row['active_fi'] . ':' . $row['pass'];
 
            if (!isset($answersByActiveAndPass[$key])) {
                $answersByActiveAndPass[$key] = [];
            }
 
            $answersByActiveAndPass[$key][$row['value1']] = $row['value2'];
        }
 
        $solutionLists = [];
 
        foreach ($answersByActiveAndPass as $indexedSolutions) {
            $solutionLists[] = $this->object->getSolutionOrderingElementList($indexedSolutions);
        }
 
        /* @var ilAssOrderingElementList[] $answers */
        $answers = [];
 
        foreach ($solutionLists as $orderingElementList) {
            $hash = $orderingElementList->getHash();
 
            if (!isset($answers[$hash])) {
                $variantHtml = $this->getAnswerStatisticOrderingVariantHtml(
                    $orderingElementList
                );
 
                $answers[$hash] = [
                    'answer' => $variantHtml,
                    'frequency' => 0,
                    'sanitized' => true
                ];
            }
 
            $answers[$hash]['frequency']++;
        }
 
        return array_values($answers);
    }
 
    public function prepareReprintableCorrectionsForm(ilPropertyFormGUI $form): void
    {
        $orderingInput = $form->getItemByPostVar(assOrderingQuestion::ORDERING_ELEMENT_FORM_FIELD_POSTVAR);
        $orderingInput->prepareReprintable($this->object);
    }
 
    public function populateCorrectionsFormProperties(ilPropertyFormGUI $form): void
    {
        $points = new ilNumberInputGUI($this->lng->txt("points"), "points");
        $points->allowDecimals(true);
        $points->setValue($this->object->getPoints());
        $points->setRequired(true);
        $points->setSize(3);
        $points->setMinValue(0);
        $points->setMinvalueShouldBeGreater(true);
        $form->addItem($points);
 
        $header = new ilFormSectionHeaderGUI();
        $header->setTitle($this->lng->txt('oq_header_ordering_elements'));
        $form->addItem($header);
 
        $orderingElementInput = $this->object->buildNestedOrderingElementInputGui();
 
        $this->object->initOrderingElementAuthoringProperties($orderingElementInput);
 
        $orderingElementInput->setElementList($this->object->getOrderingElementList());
 
        $form->addItem($orderingElementInput);
    }
 
    public function saveCorrectionsFormProperties(ilPropertyFormGUI $form): void
    {
        $this->object->setPoints((float) str_replace(',', '.', $form->getInput('points')));
 
        $submittedElementList = $this->fetchSolutionListFromSubmittedForm($form);
 
        $curElementList = $this->object->getOrderingElementList();
 
        $newElementList = new ilAssOrderingElementList();
        $newElementList->setQuestionId($this->object->getId());
 
        foreach ($submittedElementList as $submittedElement) {
            if (!$curElementList->elementExistByRandomIdentifier($submittedElement->getRandomIdentifier())) {
                continue;
            }
 
            $curElement = $curElementList->getElementByRandomIdentifier($submittedElement->getRandomIdentifier());
 
            $curElement->setPosition($submittedElement->getPosition());
 
            if ($this->object->isOrderingTypeNested()) {
                $curElement->setIndentation($submittedElement->getIndentation());
            }
 
            $newElementList->addElement($curElement);
        }
 
        $this->object->setOrderingElementList($newElementList);
    }
}