class.assKprimChoiceGUI.php

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

require_once 'Modules/TestQuestionPool/classes/class.assQuestionGUI.php';
require_once 'Modules/TestQuestionPool/interfaces/interface.ilGuiQuestionScoringAdjustable.php';
require_once 'Modules/TestQuestionPool/interfaces/interface.ilGuiAnswerScoringAdjustable.php';

class assKprimChoiceGUI extends assQuestionGUI implements ilGuiQuestionScoringAdjustable, ilGuiAnswerScoringAdjustable
{
        public $object;
        
        public function __construct($qId = -1)
        {
                parent::__construct();
                
                require_once 'Modules/TestQuestionPool/classes/class.assKprimChoice.php';
                $this->object = new assKprimChoice();
                
                if ($qId > 0)
                {
                        $this->object->loadFromDb($qId);
                }
        }

        protected function getAdditionalEditQuestionCommands()
        {
                return array('uploadImage', 'removeImage');
        }
        
        protected function editQuestion(ilPropertyFormGUI $form = null)
        {
                if( $form === null )
                {
                        $form = $this->buildEditForm();
                }

                $this->getQuestionTemplate();
                $this->tpl->addCss('Modules/Test/templates/default/ta.css');

                $this->tpl->setVariable("QUESTION_DATA", $this->ctrl->getHTML($form));
        }

        protected function uploadImage()
        {
                $result = $this->writePostData(true);
                
                if( $result == 0 )
                {
                        $this->object->saveToDb();
                        $this->editQuestion();
                }
        }
        
        public function removeImage()
        {
                $position = key($_POST['cmd']['removeImage']);
                $this->object->removeAnswerImage($position);

                $this->object->saveToDb();
                $this->editQuestion();
        }

        public function downkprim_answers()
        {
                if( isset($_POST['cmd'][__FUNCTION__]) && count($_POST['cmd'][__FUNCTION__]) )
                {
                        $this->object->moveAnswerDown( key($_POST['cmd'][__FUNCTION__]) );
                        $this->object->saveToDb();
                }
                
                $this->editQuestion();
        }

        public function upkprim_answers()
        {
                if( isset($_POST['cmd'][__FUNCTION__]) && count($_POST['cmd'][__FUNCTION__]) )
                {
                        $this->object->moveAnswerUp( key($_POST['cmd'][__FUNCTION__]) );
                        $this->object->saveToDb();
                }

                $this->editQuestion();
        }

        protected function writePostData($upload = false)
        {
                $form = $this->buildEditForm();
                $form->setValuesByPost();
                
                if( $upload )
                {
                        $answersInput = $form->getItemByPostVar('kprim_answers');
                        $answersInput->setIgnoreMissingUploadsEnabled(true);
                        
                        if( !$answersInput->checkUploads($_POST[$answersInput->getPostVar()]) )
                        {
                                ilUtil::sendFailure($this->lng->txt("form_input_not_valid"));
                                $this->editQuestion($form);
                                return 1;
                        }
                        
                        $answersInput->collectValidFiles();
                }
                elseif( !$form->checkInput() )
                {
                        $this->editQuestion($form);
                        return 1;
                }

                $this->writeQuestionGenericPostData();
                
                $this->writeQuestionSpecificPostData($form);
                $this->writeAnswerSpecificPostData($form);
                
                $this->saveTaxonomyAssignments();
                
                return 0;
        }

        protected function buildEditForm()
        {
                $form = $this->buildBasicEditFormObject();
                
                $this->addQuestionFormCommandButtons($form);

                $this->addBasicQuestionFormProperties($form);

                $this->populateQuestionSpecificFormPart($form);
                $this->populateAnswerSpecificFormPart($form);
                
                $this->populateTaxonomyFormSection($form);

                return $form;
        }

        public function populateQuestionSpecificFormPart(ilPropertyFormGUI $form)
        {
                // shuffle answers
                $shuffleAnswers = new ilCheckboxInputGUI($this->lng->txt( "shuffle_answers" ), "shuffle_answers_enabled");
                $shuffleAnswers->setChecked( $this->object->isShuffleAnswersEnabled() );
                $form->addItem($shuffleAnswers);

                if( !$this->object->getSelfAssessmentEditingMode() )
                {
                        // answer mode (single-/multi-line)
                        $answerType = new ilSelectInputGUI($this->lng->txt('answer_types'), 'answer_type');
                        $answerType->setOptions($this->object->getAnswerTypeSelectOptions($this->lng));
                        $answerType->setValue( $this->object->getAnswerType() );
                        $form->addItem($answerType);
                }

                if( !$this->object->getSelfAssessmentEditingMode() && $this->object->isSingleLineAnswerType($this->object->getAnswerType()) )
                {
                        // thumb size
                        $thumbSize = new ilNumberInputGUI($this->lng->txt('thumb_size'), 'thumb_size');
                        $thumbSize->setSuffix($this->lng->txt("thumb_size_unit_pixel"));
                        $thumbSize->setInfo( $this->lng->txt('thumb_size_info') );
                        $thumbSize->setDecimals(false);
                        $thumbSize->setMinValue(20);
                        $thumbSize->setSize(6);
                        $thumbSize->setValue( $this->object->getThumbSize() );
                        $form->addItem($thumbSize);
                }

                // option label
                $optionLabel = new ilRadioGroupInputGUI($this->lng->txt('option_label'), 'option_label');
                $optionLabel->setInfo($this->lng->txt('option_label_info'));
                $optionLabel->setRequired(true);
                $optionLabel->setValue($this->object->getOptionLabel());
                foreach($this->object->getValidOptionLabelsTranslated($this->lng) as $labelValue => $labelText)
                {
                        $option = new ilRadioOption($labelText, $labelValue);
                        $optionLabel->addOption($option);

                        if( $this->object->isCustomOptionLabel($labelValue) )
                        {
                                $customLabelTrue = new ilTextInputGUI(
                                        $this->lng->txt('option_label_custom_true'), 'option_label_custom_true'
                                );
                                $customLabelTrue->setValue($this->object->getCustomTrueOptionLabel());
                                $option->addSubItem($customLabelTrue);

                                $customLabelFalse = new ilTextInputGUI(
                                        $this->lng->txt('option_label_custom_false'), 'option_label_custom_false'
                                );
                                $customLabelFalse->setValue($this->object->getCustomFalseOptionLabel());
                                $option->addSubItem($customLabelFalse);
                        }
                }
                $form->addItem($optionLabel);
                
                // points
                $points = new ilNumberInputGUI($this->lng->txt('points'), 'points');
                $points->setRequired(true);
                $points->setSize(3);
                $points->allowDecimals(true);
                $points->setMinValue(0);
                $points->setMinvalueShouldBeGreater(true);
                $points->setValue($this->object->getPoints());
                $form->addItem($points);

                // score partial solution
                $scorePartialSolution = new ilCheckboxInputGUI($this->lng->txt('score_partsol_enabled'), 'score_partsol_enabled');
                $scorePartialSolution->setInfo($this->lng->txt('score_partsol_enabled_info'));
                $scorePartialSolution->setChecked( $this->object->isScorePartialSolutionEnabled() );
                $form->addItem($scorePartialSolution);
                
                return $form;
        }

        public function writeQuestionSpecificPostData(ilPropertyFormGUI $form)
        {
                $oldAnswerType = $this->object->getAnswerType();
                
                $this->object->setShuffleAnswersEnabled($form->getItemByPostVar('shuffle_answers_enabled')->getChecked());
                
                if( !$this->object->getSelfAssessmentEditingMode() )
                {
                        $this->object->setAnswerType($form->getItemByPostVar('answer_type')->getValue());
                }
                else
                {
                        $this->object->setAnswerType(assKprimChoice::ANSWER_TYPE_MULTI_LINE);
                }

                if( !$this->object->getSelfAssessmentEditingMode() && $this->object->isSingleLineAnswerType($oldAnswerType) )
                {
                        $this->object->setThumbSize($form->getItemByPostVar('thumb_size')->getValue());
                }

                $this->object->setOptionLabel($form->getItemByPostVar('option_label')->getValue());

                if( $this->object->isCustomOptionLabel($this->object->getOptionLabel()) )
                {
                        $this->object->setCustomTrueOptionLabel( strip_tags(
                                $form->getItemByPostVar('option_label_custom_true')->getValue()
                        ));
                        $this->object->setCustomFalseOptionLabel( strip_tags(
                                $form->getItemByPostVar('option_label_custom_false')->getValue()
                        ));
                }
                
                $this->object->setPoints($form->getItemByPostVar('points')->getValue());
                
                $this->object->setScorePartialSolutionEnabled($form->getItemByPostVar('score_partsol_enabled')->getChecked());
        }

        public function populateAnswerSpecificFormPart(ilPropertyFormGUI $form)
        {
                require_once 'Modules/TestQuestionPool/classes/class.ilKprimChoiceWizardInputGUI.php';
                $kprimAnswers = new ilKprimChoiceWizardInputGUI($this->lng->txt('answers'), 'kprim_answers');
                $kprimAnswers->setInfo($this->lng->txt('kprim_answers_info'));
                $kprimAnswers->setSize(64);
                $kprimAnswers->setMaxLength(1000);
                $kprimAnswers->setRequired(true);
                $kprimAnswers->setAllowMove(true);
                $kprimAnswers->setQuestionObject($this->object);
                if( !$this->object->getSelfAssessmentEditingMode() )
                {
                        $kprimAnswers->setSingleline($this->object->isSingleLineAnswerType($this->object->getAnswerType()));
                }
                else
                {
                        $kprimAnswers->setSingleline(false);
                }
                $kprimAnswers->setValues($this->object->getAnswers());
                $form->addItem($kprimAnswers);
                
                return $form;
        }

        public function writeAnswerSpecificPostData(ilPropertyFormGUI $form)
        {
                $answers = $form->getItemByPostVar('kprim_answers')->getValues();
                $answers = $this->handleAnswerTextsSubmit($answers);
                $files = $form->getItemByPostVar('kprim_answers')->getFiles();
                
                $this->object->handleFileUploads($answers, $files);
                $this->object->setAnswers($answers);
        }
        
        private function handleAnswerTextsSubmit($answers)
        {
                if( $this->object->getAnswerType() == assKprimChoice::ANSWER_TYPE_MULTI_LINE )
                {
                        return $answers;
                }
                
                foreach($answers as $key => $answer)
                {
                        $answer->setAnswerText(ilUtil::secureString($answer->getAnswerText()));
                }
                
                return $answers;
        }
        
        function getSpecificFeedbackOutput($active_id, $pass)
        {
                return ''; // question type supports inline answer specific feedback
        }

        function getTestOutput(
                $active_id,
                // hey: prevPassSolutions - will be always available from now on
                $pass,
                // hey.
                $is_postponed = FALSE,
                $use_post_solutions = FALSE,
                $showInlineFeedback = FALSE
        )
        {
                // shuffle output
                $keys = $this->getParticipantsAnswerKeySequence();

                // get the solution of the user for the active pass or from the last pass if allowed
                $user_solution = array();
                if ($active_id)
                {
                        // hey: prevPassSolutions - obsolete due to central check
                        #$solutions = NULL;
                        #include_once "./Modules/Test/classes/class.ilObjTest.php";
                        #if (!ilObjTest::_getUsePreviousAnswers($active_id, true))
                        #{
                        #       if (is_null($pass)) $pass = ilObjTest::_getPass($active_id);
                        #}
                        $solutions = $this->object->getTestOutputSolutions($active_id, $pass);
                        // hey.
                        foreach ($solutions as $idx => $solution_value)
                        {
                                $user_solution[$solution_value["value1"]] = $solution_value["value2"];
                        }
                }
                
                // generate the question output
                include_once "./Services/UICore/classes/class.ilTemplate.php";
                $template = new ilTemplate("tpl.il_as_qpl_mc_kprim_output.html", TRUE, TRUE, "Modules/TestQuestionPool");

                foreach ($keys as $answer_id)
                {
                        $answer = $this->object->getAnswer($answer_id);
                        if (strlen($answer->getImageFile()))
                        {
                                if ($this->object->getThumbSize())
                                {
                                        $template->setCurrentBlock("preview");
                                        $template->setVariable("URL_PREVIEW", $answer->getImageWebPath());
                                        $template->setVariable("TEXT_PREVIEW", $this->lng->txt('preview'));
                                        $template->setVariable("IMG_PREVIEW", ilUtil::getImagePath('enlarge.svg'));
                                        $template->setVariable("ANSWER_IMAGE_URL", $answer->getThumbWebPath());
                                        list($width, $height, $type, $attr) = getimagesize($answer->getImageFsPath());
                                        $alt = $answer->getImageFile();
                                        if (strlen($answer->getAnswertext()))
                                        {
                                                $alt = $answer->getAnswertext();
                                        }
                                        $alt = preg_replace("/<[^>]*?>/", "", $alt);
                                        $template->setVariable("ANSWER_IMAGE_ALT", ilUtil::prepareFormOutput($alt));
                                        $template->setVariable("ANSWER_IMAGE_TITLE", ilUtil::prepareFormOutput($alt));
                                        $template->parseCurrentBlock();
                                }
                                else
                                {
                                        $template->setCurrentBlock("answer_image");
                                        $template->setVariable("ANSWER_IMAGE_URL", $answer->getImageWebPath());
                                        list($width, $height, $type, $attr) = getimagesize($answer->getImageFsPath());
                                        $alt = $answer->getImageFile();
                                        if (strlen($answer->getAnswertext()))
                                        {
                                                $alt = $answer->getAnswertext();
                                        }
                                        $alt = preg_replace("/<[^>]*?>/", "", $alt);
                                        $template->setVariable("ATTR", $attr);
                                        $template->setVariable("ANSWER_IMAGE_ALT", ilUtil::prepareFormOutput($alt));
                                        $template->setVariable("ANSWER_IMAGE_TITLE", ilUtil::prepareFormOutput($alt));
                                        $template->parseCurrentBlock();
                                }
                        }

                        if( $showInlineFeedback )
                        {
                                $this->populateSpecificFeedbackInline($user_solution, $answer_id, $template);
                        }

                        $template->setCurrentBlock("answer_row");
                        $template->setVariable("ANSWER_ID", $answer_id);
                        $template->setVariable("ANSWER_TEXT", $this->object->prepareTextareaOutput($answer->getAnswertext(), TRUE));
                        $template->setVariable('VALUE_TRUE', 1);
                        $template->setVariable('VALUE_FALSE', 0);

                        if( isset($user_solution[$answer->getPosition()]) )
                        {
                                $tplVar = $user_solution[$answer->getPosition()] ? 'CHECKED_ANSWER_TRUE' : 'CHECKED_ANSWER_FALSE';
                                $template->setVariable($tplVar, " checked=\"checked\"");
                        }

                        $template->parseCurrentBlock();
                }

                $questiontext = $this->object->getQuestion();
                $template->setVariable("QUESTIONTEXT", $this->object->prepareTextareaOutput($questiontext, TRUE));

                $template->setVariable("INSTRUCTIONTEXT", $this->object->getInstructionTextTranslation(
                        $this->lng, $this->object->getOptionLabel()
                ));
                
                $template->setVariable("OPTION_LABEL_TRUE", $this->object->getTrueOptionLabelTranslation(
                        $this->lng, $this->object->getOptionLabel()
                ));

                $template->setVariable("OPTION_LABEL_FALSE", $this->object->getFalseOptionLabelTranslation(
                        $this->lng, $this->object->getOptionLabel()
                ));
                
                $questionoutput = $template->get();
                $pageoutput = $this->outQuestionPage("", $is_postponed, $active_id, $questionoutput);
                return $pageoutput;
        }

        public function getPreview($show_question_only = FALSE, $showInlineFeedback = false)
        {
                $user_solution = is_object($this->getPreviewSession()) ? (array)$this->getPreviewSession()->getParticipantsSolution() : array();
                // shuffle output
                $keys = $this->getParticipantsAnswerKeySequence();

                // generate the question output
                include_once "./Services/UICore/classes/class.ilTemplate.php";
                $template = new ilTemplate("tpl.il_as_qpl_mc_kprim_output.html", TRUE, TRUE, "Modules/TestQuestionPool");
                
                foreach ($keys as $answer_id)
                {
                        $answer = $this->object->getAnswer($answer_id);
                        if (strlen($answer->getImageFile()))
                        {
                                if ($this->object->getThumbSize())
                                {
                                        $template->setCurrentBlock("preview");
                                        $template->setVariable("URL_PREVIEW", $answer->getImageWebPath());
                                        $template->setVariable("TEXT_PREVIEW", $this->lng->txt('preview'));
                                        $template->setVariable("IMG_PREVIEW", ilUtil::getImagePath('enlarge.svg'));
                                        $template->setVariable("ANSWER_IMAGE_URL", $answer->getThumbWebPath());
                                        list($width, $height, $type, $attr) = getimagesize($answer->getImageFsPath());
                                        $alt = $answer->getImageFile();
                                        if (strlen($answer->getAnswertext()))
                                        {
                                                $alt = $answer->getAnswertext();
                                        }
                                        $alt = preg_replace("/<[^>]*?>/", "", $alt);
                                        $template->setVariable("ANSWER_IMAGE_ALT", ilUtil::prepareFormOutput($alt));
                                        $template->setVariable("ANSWER_IMAGE_TITLE", ilUtil::prepareFormOutput($alt));
                                        $template->parseCurrentBlock();
                                }
                                else
                                {
                                        $template->setCurrentBlock("answer_image");
                                        $template->setVariable("ANSWER_IMAGE_URL", $answer->getImageWebPath());
                                        list($width, $height, $type, $attr) = getimagesize($answer->getImageFsPath());
                                        $alt = $answer->getImageFile();
                                        if (strlen($answer->getAnswertext()))
                                        {
                                                $alt = $answer->getAnswertext();
                                        }
                                        $alt = preg_replace("/<[^>]*?>/", "", $alt);
                                        $template->setVariable("ATTR", $attr);
                                        $template->setVariable("ANSWER_IMAGE_ALT", ilUtil::prepareFormOutput($alt));
                                        $template->setVariable("ANSWER_IMAGE_TITLE", ilUtil::prepareFormOutput($alt));
                                        $template->parseCurrentBlock();
                                }
                        }

                        if( $showInlineFeedback )
                        {
                                $this->populateSpecificFeedbackInline($user_solution, $answer_id, $template);
                        }

                        $template->setCurrentBlock("answer_row");
                        $template->setVariable("ANSWER_ID", $answer_id);
                        $template->setVariable("ANSWER_TEXT", $this->object->prepareTextareaOutput($answer->getAnswertext(), TRUE));
                        $template->setVariable('VALUE_TRUE', 1);
                        $template->setVariable('VALUE_FALSE', 0);

                        if( isset($user_solution[$answer->getPosition()]) )
                        {
                                $tplVar = $user_solution[$answer->getPosition()] ? 'CHECKED_ANSWER_TRUE' : 'CHECKED_ANSWER_FALSE';
                                $template->setVariable($tplVar, " checked=\"checked\"");
                        }
                        
                        $template->parseCurrentBlock();
                }
                $questiontext = $this->object->getQuestion();
                $template->setVariable("QUESTIONTEXT", $this->object->prepareTextareaOutput($questiontext, TRUE));
                
                $template->setVariable("INSTRUCTIONTEXT", $this->object->getInstructionTextTranslation(
                        $this->lng, $this->object->getOptionLabel()
                ));
                
                $template->setVariable("OPTION_LABEL_TRUE", $this->object->getTrueOptionLabelTranslation(
                        $this->lng, $this->object->getOptionLabel()
                ));
                
                $template->setVariable("OPTION_LABEL_FALSE", $this->object->getFalseOptionLabelTranslation(
                        $this->lng, $this->object->getOptionLabel()
                ));
                
                $questionoutput = $template->get();
                if (!$show_question_only)
                {
                        // get page object output
                        $questionoutput = $this->getILIASPage($questionoutput);
                }
                return $questionoutput;
        }

        public function getSolutionOutput(
                $active_id,
                $pass = NULL,
                $graphicalOutput = FALSE,
                $result_output = FALSE,
                $show_question_only = TRUE,
                $show_feedback = FALSE,
                $show_correct_solution = FALSE,
                $show_manual_scoring = FALSE,
                $show_question_text = TRUE
        )
        {
                // shuffle output
                $keys = $this->getParticipantsAnswerKeySequence();

                // get the solution of the user for the active pass or from the last pass if allowed
                $user_solution = array();
                if (($active_id > 0) && (!$show_correct_solution))
                {
                        $solutions =& $this->object->getSolutionValues($active_id, $pass);
                        foreach ($solutions as $idx => $solution_value)
                        {
                                $user_solution[$solution_value['value1']] = $solution_value['value2'];
                        }
                }
                else
                {
                        // take the correct solution instead of the user solution
                        foreach ($this->object->getAnswers() as $answer)
                        {
                                $user_solution[$answer->getPosition()] = $answer->getCorrectness();
                        }
                }

                // generate the question output
                $template = new ilTemplate("tpl.il_as_qpl_mc_kprim_output_solution.html", TRUE, TRUE, "Modules/TestQuestionPool");
                
                foreach ($keys as $answer_id)
                {
                        $answer = $this->object->getAnswer($answer_id);
                        
                        if (($active_id > 0) && (!$show_correct_solution))
                        {
                                if ($graphicalOutput)
                                {
                                        // output of ok/not ok icons for user entered solutions

                                        if( $user_solution[$answer->getPosition()] == $answer->getCorrectness() )
                                        {
                                                $template->setCurrentBlock("icon_ok");
                                                $template->setVariable("ICON_OK", ilUtil::getImagePath("icon_ok.svg"));
                                                $template->setVariable("TEXT_OK", $this->lng->txt("answer_is_right"));
                                                $template->parseCurrentBlock();
                                        }
                                        else
                                        {
                                                $template->setCurrentBlock("icon_ok");
                                                $template->setVariable("ICON_NOT_OK", ilUtil::getImagePath("icon_not_ok.svg"));
                                                $template->setVariable("TEXT_NOT_OK", $this->lng->txt("answer_is_wrong"));
                                                $template->parseCurrentBlock();
                                        }
                                }
                        }
                        if (strlen($answer->getImageFile()))
                        {
                                $template->setCurrentBlock("answer_image");
                                if ($this->object->getThumbSize())
                                {
                                        $template->setVariable("ANSWER_IMAGE_URL", $answer->getThumbWebPath());
                                }
                                else
                                {
                                        $template->setVariable("ANSWER_IMAGE_URL", $answer->getImageWebPath());
                                }

                                $template->setVariable("ANSWER_IMAGE_ALT", ilUtil::prepareFormOutput($answer->getImageFile()));
                                $template->setVariable("ANSWER_IMAGE_TITLE", ilUtil::prepareFormOutput($answer->getImageFile()));
                                $template->parseCurrentBlock();
                        }

                        if ($show_feedback)
                        {
                                $this->populateSpecificFeedbackInline($user_solution, $answer_id, $template);
                        }
                        
                        $template->setCurrentBlock("answer_row");
                        $template->setVariable("ANSWER_TEXT", $this->object->prepareTextareaOutput($answer->getAnswertext(), TRUE));

                        if( $this->renderPurposeSupportsFormHtml() || $this->isRenderPurposePrintPdf() )
                        {
                                if( isset($user_solution[$answer->getPosition()]) )
                                {
                                        if( $user_solution[$answer->getPosition()] )
                                        {
                                                $template->setVariable("SOLUTION_IMAGE_TRUE", ilUtil::getHtmlPath(ilUtil::getImagePath("radiobutton_checked.png")));
                                                $template->setVariable("SOLUTION_ALT_TRUE", $this->lng->txt("checked"));
                                                $template->setVariable("SOLUTION_IMAGE_FALSE", ilUtil::getHtmlPath(ilUtil::getImagePath("radiobutton_unchecked.png")));
                                                $template->setVariable("SOLUTION_ALT_FALSE", $this->lng->txt("unchecked"));
                                        }
                                        else
                                        {
                                                $template->setVariable("SOLUTION_IMAGE_TRUE", ilUtil::getHtmlPath(ilUtil::getImagePath("radiobutton_unchecked.png")));
                                                $template->setVariable("SOLUTION_ALT_TRUE", $this->lng->txt("unchecked"));
                                                $template->setVariable("SOLUTION_IMAGE_FALSE", ilUtil::getHtmlPath(ilUtil::getImagePath("radiobutton_checked.png")));
                                                $template->setVariable("SOLUTION_ALT_FALSE", $this->lng->txt("checked"));
                                        }
                                }
                                else
                                {
                                        $template->setVariable("SOLUTION_IMAGE_TRUE", ilUtil::getHtmlPath(ilUtil::getImagePath("radiobutton_unchecked.png")));
                                        $template->setVariable("SOLUTION_ALT_TRUE", $this->lng->txt("unchecked"));
                                        $template->setVariable("SOLUTION_IMAGE_FALSE", ilUtil::getHtmlPath(ilUtil::getImagePath("radiobutton_unchecked.png")));
                                        $template->setVariable("SOLUTION_ALT_FALSE", $this->lng->txt("unchecked"));
                                }
                        }
                        else
                        {
                                $template->setVariable('SOL_QID', $this->object->getId());
                                $template->setVariable('SOL_SUFFIX', $show_correct_solution ? 'bestsolution' : 'usersolution');
                                $template->setVariable('SOL_POSITION', $answer->getPosition());
                                
                                $template->setVariable('SOL_TRUE_VALUE', 1);
                                $template->setVariable('SOL_FALSE_VALUE', 0);

                                if( isset($user_solution[$answer->getPosition()]) )
                                {
                                        if( $user_solution[$answer->getPosition()] )
                                        {
                                                $template->setVariable('SOL_TRUE_CHECKED', 'checked');
                                        }
                                        else
                                        {
                                                $template->setVariable('SOL_FALSE_CHECKED', 'checked');
                                        }
                                }
                        }
                        
                        $template->parseCurrentBlock();
                }
                
                if ($show_question_text==true)
                {
                        $questiontext = $this->object->getQuestion();
                        $template->setVariable("QUESTIONTEXT", $this->object->prepareTextareaOutput($questiontext, TRUE));

                        $template->setVariable("INSTRUCTIONTEXT", $this->object->getInstructionTextTranslation(
                                $this->lng, $this->object->getOptionLabel()
                        ));
                }

                $template->setVariable("OPTION_LABEL_TRUE", $this->object->getTrueOptionLabelTranslation(
                        $this->lng, $this->object->getOptionLabel()
                ));

                $template->setVariable("OPTION_LABEL_FALSE", $this->object->getFalseOptionLabelTranslation(
                        $this->lng, $this->object->getOptionLabel()
                ));
                
                
                $questionoutput = $template->get();
                $feedback = ($show_feedback && !$this->isTestPresentationContext()) ? $this->getGenericFeedbackOutput($active_id, $pass) : "";

                $solutiontemplate = new ilTemplate("tpl.il_as_tst_solution_output.html",TRUE, TRUE, "Modules/TestQuestionPool");

                if (strlen($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", $this->object->prepareTextareaOutput( $feedback, true ));
                }
                
                $solutiontemplate->setVariable("SOLUTION_OUTPUT", $questionoutput);

                $solutionoutput = $solutiontemplate->get();
                
                if (!$show_question_only)
                {
                        // get page object output
                        $solutionoutput = $this->getILIASPage($solutionoutput);
                }
                return $solutionoutput;
        }

        protected function getParticipantsAnswerKeySequence()
        {
                $choiceKeys = array_keys($this->object->getAnswers());

                if( $this->object->isShuffleAnswersEnabled() )
                {
                        $choiceKeys = $this->object->getShuffler()->shuffle($choiceKeys);
                }

                return $choiceKeys;
        }
        
        private function populateSpecificFeedbackInline($user_solution, $answer_id, $template)
        {
                require_once 'Modules/TestQuestionPool/classes/feedback/class.ilAssConfigurableMultiOptionQuestionFeedback.php';
                
                if($this->object->getSpecificFeedbackSetting() == ilAssConfigurableMultiOptionQuestionFeedback::FEEDBACK_SETTING_CHECKED)
                {
                        if($user_solution[$answer_id])
                        {
                                $fb = $this->object->feedbackOBJ->getSpecificAnswerFeedbackTestPresentation($this->object->getId(), $answer_id);
                                if(strlen($fb))
                                {
                                        $template->setCurrentBlock("feedback");
                                        $template->setVariable("FEEDBACK", $this->object->prepareTextareaOutput($fb, true));
                                        $template->parseCurrentBlock();
                                }
                        }
                }

                if($this->object->getSpecificFeedbackSetting() == ilAssConfigurableMultiOptionQuestionFeedback::FEEDBACK_SETTING_ALL)
                {
                        $fb = $this->object->feedbackOBJ->getSpecificAnswerFeedbackTestPresentation($this->object->getId(), $answer_id);
                        if(strlen($fb))
                        {
                                $template->setCurrentBlock("feedback");
                                $template->setVariable("FEEDBACK", $this->object->prepareTextareaOutput($fb, true));
                                $template->parseCurrentBlock();
                        }
                }

                if($this->object->getSpecificFeedbackSetting() == ilAssConfigurableMultiOptionQuestionFeedback::FEEDBACK_SETTING_CORRECT)
                {
                        $answer = $this->object->getAnswer($answer_id);

                        if($answer->getCorrectness())
                        {
                                $fb = $this->object->feedbackOBJ->getSpecificAnswerFeedbackTestPresentation($this->object->getId(), $answer_id);
                                if(strlen($fb))
                                {
                                        $template->setCurrentBlock("feedback");
                                        $template->setVariable("FEEDBACK", $this->object->prepareTextareaOutput($fb, true));
                                        $template->parseCurrentBlock();
                                }
                        }
                }
        }

        public function getAfterParticipationSuppressionAnswerPostVars()
        {
                return array();
        }

        public function getAfterParticipationSuppressionQuestionPostVars()
        {
                return array();
        }

        public function getAggregatedAnswersView($relevant_answers)
        {
                return  $this->renderAggregateView(
                        $this->aggregateAnswers( $relevant_answers, $this->object->getAnswers() ) )->get();
                
                return '<pre>'.print_r($relevant_answers, 1).'</pre>';
        }
        
        public function renderAggregateView($aggregate)
        {
                $trueOptionLabel = $this->object->getTrueOptionLabelTranslation($this->lng, $this->object->getOptionLabel());
                $falseOptionLabel = $this->object->getFalseOptionLabelTranslation($this->lng, $this->object->getOptionLabel());
                
                $tpl = new ilTemplate('tpl.il_as_aggregated_kprim_answers_table.html', true, true, "Modules/TestQuestionPool");

                foreach( $aggregate as $lineData )
                {
                        $tpl->setCurrentBlock('aggregaterow');
                        $tpl->setVariable('OPTION', $lineData['answertext']);
                        $tpl->setVariable('COUNT_TRUE', $lineData['count_true']);
                        $tpl->setVariable('COUNT_FALSE', $lineData['count_false']);
                        $tpl->parseCurrentBlock();
                }
                
                $tpl->setVariable('OPTION_HEAD', $this->lng->txt('answers'));
                $tpl->setVariable('COUNT_TRUE_HEAD', $trueOptionLabel);
                $tpl->setVariable('COUNT_FALSE_HEAD', $falseOptionLabel);

                return $tpl;
        }
        
        public function aggregateAnswers($rawSolutionData, $answers)
        {
                $aggregate = array();
                
                foreach( $answers as $answer )
                {
                        $answerAgg = array(
                                'answertext' => $answer->getAnswerText(), 'count_true' => 0, 'count_false' => 0
                        );

                        foreach( $rawSolutionData as $solutionRecord )
                        {
                                if( $solutionRecord['value1'] == $answer->getPosition() )
                                {
                                        if( $solutionRecord['value2'] )
                                        {
                                                $answerAgg['count_true']++;
                                        }
                                        else
                                        {
                                                $answerAgg['count_false']++;
                                        }
                                }
                                
                        }

                        $aggregate[] = $answerAgg;
                }
                
                return $aggregate;
        }

}