class.assLongMenu.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */
 
require_once './Modules/TestQuestionPool/classes/class.assQuestion.php';
require_once './Modules/Test/classes/inc.AssessmentConstants.php';
require_once './Modules/TestQuestionPool/interfaces/interface.ilObjQuestionScoringAdjustable.php';
require_once './Modules/TestQuestionPool/interfaces/interface.iQuestionCondition.php';
require_once './Modules/TestQuestionPool/classes/class.ilUserQuestionResult.php';
 
 
class assLongMenu extends assQuestion implements ilObjQuestionScoringAdjustable
{
        private $answerType, $long_menu_text, $answers, $correct_answers, $json_structure, $ilDB;
        private $specificFeedbackSetting, $minAutoComplete;
        
        const ANSWER_TYPE_SELECT_VAL    = 0;
        const ANSWER_TYPE_TEXT_VAL              = 1;
        const GAP_PLACEHOLDER                   = 'Longmenu';
        const MIN_LENGTH_AUTOCOMPLETE   = 3;
        const MAX_INPUT_FIELDS                  = 500;
 
        function __construct(
                $title          = "",
                $comment        = "",
                $author         = "",
                $owner          = -1,
                $question       = ""
        )
        {
                require_once 'Modules/TestQuestionPool/classes/feedback/class.ilAssConfigurableMultiOptionQuestionFeedback.php';
                $this->specificFeedbackSetting = ilAssConfigurableMultiOptionQuestionFeedback::FEEDBACK_SETTING_ALL;
                $this->minAutoComplete = self::MIN_LENGTH_AUTOCOMPLETE;
                parent::__construct($title, $comment, $author, $owner, $question);
                $this->ilDB = $GLOBALS['DIC']['ilDB'];
        }
        
        public function getAnswerType()
        {
                return $this->answerType;
        }
 
        public function setAnswerType($answerType)
        {
                $this->answerType = $answerType;
        }
        
        public function getCorrectAnswers()
        {
                return $this->correct_answers;
        }
 
 
        public function setCorrectAnswers($correct_answers)
        {
                $this->correct_answers = $correct_answers;
        }
 
        private function buildFolderName()
        {
                return ilUtil::getDataDir() . '/assessment/longMenuQuestion/' . $this->getId() . '/' ;
        }
 
        public function getAnswerTableName()
        {
                return "qpl_a_lome";
        }
        
        private function buildFileName($gap_id)
        {
                try
                {
                        $this->assertDirExists();
                        return $this->buildFolderName() . $gap_id . '.txt';
                }
                catch (ilException $e) {
                        
                }
        }
 
        function setLongMenuTextValue($long_menu_text = "")
        {
                $this->long_menu_text = $long_menu_text;
        }
 
        function getLongMenuTextValue()
        {
                return $this->long_menu_text;
        }
                
        public function setAnswers($answers)
        {
                $this->answers = $answers;
        }
 
        public function getAnswers()
        {
                return $this->answers;
        }
 
        public function getJsonStructure()
        {
                return $this->json_structure;
        }
 
        public function setJsonStructure($json_structure)
        {
                $this->json_structure = $json_structure;
        }
        
        public function setSpecificFeedbackSetting($specificFeedbackSetting)
        {
                $this->specificFeedbackSetting = $specificFeedbackSetting;
        }
 
        public function getSpecificFeedbackSetting()
        {
                return $this->specificFeedbackSetting;
        }
 
        public function setMinAutoComplete($minAutoComplete)
        {
                $this->minAutoComplete = $minAutoComplete;
        }
 
        public function getMinAutoComplete()
        {
                return $this->minAutoComplete ? $this->minAutoComplete  : self::MIN_LENGTH_AUTOCOMPLETE;
        }
        
        public function isComplete()
        {
                if (strlen($this->title)
                        && $this->author
                        && $this->question
                        && sizeof($this->answers) > 0
                        && sizeof($this->correct_answers) > 0   
                        && $this->getPoints() > 0
                )
                {
                        return true;
                }
                return false;
        }
        
        public function saveToDb($original_id = "")
        {
                $this->saveQuestionDataToDb($original_id);
                $this->saveAdditionalQuestionDataToDb();
                $this->saveAnswerSpecificDataToDb();
                parent::saveToDb($original_id);
        }
 
        public function checkQuestionCustomPart()
        {
                $hidden_text_files      = $this->getAnswers();
                $correct_answers        = $this->getCorrectAnswers();
                $points                         = array();
                if( sizeof($correct_answers) == 0 || sizeof($hidden_text_files) == 0 )
                {
                        return false;
                }
                if(sizeof($correct_answers) != sizeof($hidden_text_files))
                {
                        return false;
                }
                foreach($correct_answers as $key => $correct_answers_row)
                {
                        if($this->correctAnswerDoesNotExistInAnswerOptions($correct_answers_row, $hidden_text_files[$key]))
                        {
                                return false;
                        }
                        if( !is_array($correct_answers_row[0]) || sizeof($correct_answers_row[0]) == 0)
                        {
                                return false;
                        }
                        if($correct_answers_row[1] > 0)
                        {
                                array_push($points, $correct_answers_row[1]);
                        }
                }
                if(sizeof($correct_answers) != sizeof($points))
                {
                        return false;
                }
                
                foreach($points as $row)
                {
                        if($row <= 0)
                        {
                                return false;
                        }
                }
                return true;
        }
        
        private function correctAnswerDoesNotExistInAnswerOptions($answers, $answer_options)
        {
                foreach($answers[0] as $key => $answer)
                {
                        if(!in_array($answer, $answer_options))
                        {
                                return true;
                        }
                }
                return false;
        }
 
 
        function getMaximumPoints()
        {
                $sum            = 0;
                $points = $this->getCorrectAnswers();
                if($points)
                {
                        foreach($points as $add)
                        {
                                $sum += $add[1];
                        }
                }
                return $sum;
        }
        
        public function saveAdditionalQuestionDataToDb()
        {
                // save additional data
                $this->ilDB->manipulateF( "DELETE FROM " . $this->getAdditionalTableName() . " WHERE question_fi = %s",
                        array( "integer" ),
                        array( $this->getId() )
                );
                $this->ilDB->manipulateF( "INSERT INTO " . $this->getAdditionalTableName(
                        ) . " (question_fi, long_menu_text, feedback_setting, min_auto_complete) VALUES (%s, %s, %s, %s)",
                        array( "integer", "text", "integer", "integer"),
                        array(
                                $this->getId(),
                                $this->getLongMenuTextValue(),
                                (int)$this->getSpecificFeedbackSetting(),
                                (int)$this->getMinAutoComplete()
                        )
                );
                $this->createFileFromArray();
        }
 
        public function saveAnswerSpecificDataToDb()
        {
                $this->clearAnswerSpecificDataFromDb($this->getId());
                $type_array = $this->getAnswerType();
                $points = 0;
                foreach($this->getCorrectAnswers() as $gap_number => $gap)
                {
                        foreach($gap[0] as $position => $answer)
                        {
                                if($type_array == null)
                                {
                                        $type = $gap[2];
                                }
                                else
                                {
                                        $type = $type_array[$gap_number];
                                }
                                $this->db->replace(
                                                $this->getAnswerTableName(),
                                                array(
                                                                'question_fi' => array('integer', (int)$this->getId()),
                                                                'gap_number'  => array('integer', (int)$gap_number),
                                                                'position'    => array('integer', (int)$position)
                                                ),
                                                array(
                                                                'answer_text' => array('text', $answer),
                                                                'points'      => array('float', $gap[1]),
                                                                'type'        => array('integer', (int)  $type)
                                                )
                                );
                        }
                        $points += $gap[1];
                }
                $this->setPoints($points);
        }
        
        private function createFileFromArray()
        {
                $array = $this->getAnswers();
                $this->clearFolder();
                foreach($array as $gap => $values)
                {
                        $file_content = '';
                        if(is_array($values))
                        {
                                foreach($values as $key => $value)
                                {
                                        $file_content .= $value . "\n";
                                }
                                $file_content = rtrim($file_content, "\n"); 
                                $file = fopen($this->buildFileName($gap), "w");
                                fwrite($file, $file_content);
                                fclose($file);
                        }
                }
        }
 
        private function createArrayFromFile()
        {
                $files = glob( $this->buildFolderName() . '*.txt' );
                
                if($files === false)
                {
                        $files = array();
                }
                
                $answers = array();
 
                foreach( $files as $file)
                {
                        $gap                                    = str_replace('.txt', '', basename($file));
                        $answers[(int) $gap]    = explode("\n", file_get_contents($file));
                }
                $this->setAnswers($answers);
                return $answers;
        }
        
        private function clearFolder($let_folder_exists = true)
        {
                ilUtil::delDir($this->buildFolderName(), $let_folder_exists);
        }
        
        private function assertDirExists()
        {
                $folder_name = $this->buildFolderName();
                if(!ilUtil::makeDirParents($folder_name))
                {
                        throw new ilException('Cannot create export directory');
                }
 
                if(
                        !is_dir($folder_name) ||
                        !is_readable($folder_name) ||
                        !is_writable($folder_name)
                )
                {
                        throw new ilException('Cannot create export directory');
                }
        }
        
        public function loadFromDb($question_id)
        {
                $result = $this->ilDB->queryF("SELECT qpl_questions.*, " . $this->getAdditionalTableName() . ".* FROM qpl_questions LEFT JOIN " . $this->getAdditionalTableName() . " ON " . $this->getAdditionalTableName() . ".question_fi = qpl_questions.question_id WHERE qpl_questions.question_id = %s",
                        array("integer"),
                        array($question_id)
                );
                if ($result->numRows() == 1)
                {
                        $data = $this->ilDB->fetchAssoc($result);
                        $this->setId($question_id);
                        $this->setObjId($data["obj_fi"]);
                        $this->setNrOfTries($data['nr_of_tries']);
                        $this->setTitle($data["title"]);
                        $this->setComment($data["description"]);
                        $this->setOriginalId($data["original_id"]);
                        $this->setAuthor($data["author"]);
                        $this->setPoints($data["points"]);
                        $this->setOwner($data["owner"]);
                        include_once("./Services/RTE/classes/class.ilRTE.php");
                        $this->setQuestion(ilRTE::_replaceMediaObjectImageSrc($data['question_text'], 1));
                        $this->setEstimatedWorkingTime(substr($data["working_time"], 0, 2), substr($data["working_time"], 3, 2), substr($data["working_time"], 6, 2));
                        $this->setLongMenuTextValue(ilRTE::_replaceMediaObjectImageSrc($data['long_menu_text'], 1));
                        $this->loadCorrectAnswerData($question_id);
                        $this->setMinAutoComplete($data["min_auto_complete"]);
                        if( isset($data['feedback_setting']) )
                        {
                                $this->setSpecificFeedbackSetting((int)$data['feedback_setting']);
                        }
                        try
                        {
                                $this->setAdditionalContentEditingMode($data['add_cont_edit_mode']);
                        }
                        catch(ilTestQuestionPoolException $e)
                        {
                        }
                }
 
                $this->loadCorrectAnswerData($question_id);
                $this->createArrayFromFile();
                parent::loadFromDb($question_id);
        }
 
        private function loadCorrectAnswerData($question_id)
        {
                $res = $this->db->queryF(
                        "SELECT * FROM {$this->getAnswerTableName()} WHERE question_fi = %s ORDER BY gap_number, position ASC",
                        array('integer'), array($question_id)
                );
                
                $correct_answers        = array();
                while($data = $this->ilDB->fetchAssoc($res))
                {
                        $correct_answers[$data['gap_number']][0][$data['position']]     = rtrim($data['answer_text']);
                        $correct_answers[$data['gap_number']][1]                                        = $data['points'];
                        $correct_answers[$data['gap_number']][2]                                        = $data['type'];
                }
                $this->setJsonStructure(json_encode($correct_answers));
                $this->setCorrectAnswers($correct_answers);
                
        }
 
        public function getCorrectAnswersForQuestionSolution($question_id)
        {
                $correct_answers = array();
                $res = $this->db->queryF(
                        'SELECT gap_number, answer_text FROM  ' . $this->getAnswerTableName() .' WHERE question_fi = %s',
                        array('integer'), array($question_id)
                );
                while($data = $this->ilDB->fetchAssoc($res))
                {
                        if(array_key_exists($data['gap_number'], $correct_answers))
                        {
                                $correct_answers[$data['gap_number']] .= ' ' . $this->lng->txt("or") . ' ';
                                $correct_answers[$data['gap_number']] .= rtrim($data['answer_text']);
                        }
                        else
                        {
                                $correct_answers[$data['gap_number']] .= rtrim($data['answer_text']);
                        }
                }
                return $correct_answers;
        }
 
        private function getCorrectAnswersForGap($question_id, $gap_id)
        {
                $correct_answers = array();
                $res = $this->db->queryF(
                        'SELECT answer_text FROM  ' . $this->getAnswerTableName() .' WHERE question_fi = %s AND gap_number = %s',
                        array('integer', 'integer'), array($question_id, $gap_id)
                );
                while($data = $this->ilDB->fetchAssoc($res))
                {
                        $correct_answers[] = rtrim($data['answer_text']);
                }
                return $correct_answers;
        }
        
        private function getPointsForGap($question_id, $gap_id)
        {
                $points = 0;
                $res = $this->db->queryF(
                        'SELECT points FROM  ' . $this->getAnswerTableName() .' WHERE question_fi = %s AND gap_number = %s GROUP BY gap_number, points',
                        array('integer', 'integer'), array($question_id, $gap_id)
                );
                while($data = $this->ilDB->fetchAssoc($res))
                {
                        $points = $data['points'];
                }
                return $points;
        }
 
        
        function getAnswersObject()
        {
                        return json_encode($this->createArrayFromFile());
        }
        
        function getCorrectAnswersAsJson()
        {
                $this->loadCorrectAnswerData($this->getId());
                return $this->getJsonStructure();
        }
        
        function duplicate($for_test = true, $title = "", $author = "", $owner = "", $testObjId = null)
        {
 
                if ($this->id <= 0)
                {
                        // The question has not been saved. It cannot be duplicated
                        return;
                }
                
                // duplicate the question in database
                $this_id = $this->getId();
                $thisObjId = $this->getObjId();
 
                $clone = $this;
                include_once ("./Modules/TestQuestionPool/classes/class.assQuestion.php");
                $original_id = assQuestion::_getOriginalId($this->id);
                $clone->id = -1;
 
                if( (int)$testObjId > 0 )
                {
                        $clone->setObjId($testObjId);
                }
 
                if ($title)
                {
                        $clone->setTitle($title);
                }
 
                if ($author)
                {
                        $clone->setAuthor($author);
                }
                if ($owner)
                {
                        $clone->setOwner($owner);
                }
 
                if ($for_test)
                {
                        $clone->saveToDb($original_id);
                }
                else
                {
                        $clone->saveToDb();
                }
                
                $clone->copyPageOfQuestion($this_id);
                $clone->copyXHTMLMediaObjectsOfQuestion($this_id);
                $clone->onDuplicate($thisObjId, $this_id, $clone->getObjId(), $clone->getId());
 
                return $clone->id;
        }
 
        function copyObject($target_questionpool_id, $title = "")
        {
                if ($this->id <= 0)
                {
                        // The question has not been saved. It cannot be duplicated
                        return;
                }
                // duplicate the question in database
                $clone = $this;
                include_once ("./Modules/TestQuestionPool/classes/class.assQuestion.php");
                $original_id = assQuestion::_getOriginalId($this->id);
                $clone->id = -1;
                $source_questionpool_id = $this->getObjId();
                $clone->setObjId($target_questionpool_id);
                if ($title)
                {
                        $clone->setTitle($title);
                }
                $clone->saveToDb();
                
                $clone->copyPageOfQuestion($original_id);
                $clone->copyXHTMLMediaObjectsOfQuestion($original_id);
 
                $clone->onCopy($source_questionpool_id, $original_id, $clone->getObjId(), $clone->getId());
 
                return $clone->id;
        }
 
        public function createNewOriginalFromThisDuplicate($targetParentId, $targetQuestionTitle = "")
        {
                if ($this->id <= 0)
                {
                        // The question has not been saved. It cannot be duplicated
                        return;
                }
 
                include_once ("./Modules/TestQuestionPool/classes/class.assQuestion.php");
 
                $sourceQuestionId = $this->id;
                $sourceParentId = $this->getObjId();
 
                // duplicate the question in database
                $clone = $this;
                $clone->id = -1;
 
                $clone->setObjId($targetParentId);
 
                if ($targetQuestionTitle)
                {
                        $clone->setTitle($targetQuestionTitle);
                }
 
                $clone->saveToDb();
                $clone->copyPageOfQuestion($sourceQuestionId);
                $clone->copyXHTMLMediaObjectsOfQuestion($sourceQuestionId);
 
                $clone->onCopy($sourceParentId, $sourceQuestionId, $clone->getObjId(), $clone->getId());
 
                return $clone->id;
        }
        
 
        public function calculateReachedPoints($active_id, $pass = NULL, $authorizedSolution = true, $returndetails = FALSE)
        {
                if( $returndetails )
                {
                        throw new ilTestException('return details not implemented for '.__METHOD__);
                }
 
                $found_values = array();
                if (is_null($pass))
                {
                        $pass = $this->getSolutionMaxPass($active_id);
                }
                $result = $this->getCurrentSolutionResultSet($active_id, $pass, $authorizedSolution);
                while ($data =  $this->ilDB->fetchAssoc($result))
                {
                        $found_values[(int)$data['value1']] = $data['value2'];
                }
 
                $points = $this->calculateReachedPointsForSolution($found_values, $active_id);
 
                return $points;
        }
 
        protected function calculateReachedPointsForSolution($found_values, $active_id = 0)
        {
                $points = 0;
                foreach($found_values as $key => $answer)
                {
                        if($answer != '')
                        {
                                $correct_answers = $this->getCorrectAnswersForGap($this->id, $key);
                                if(in_array($answer, $correct_answers))
                                {
                                        $points += $this->getPointsForGap($this->id, $key);
                                }
                        }
                }
                return $points;
        }
        
        public function saveWorkingData($active_id, $pass = NULL, $authorized = true)
        {
                if (is_null($pass))
                {
                        include_once "./Modules/Test/classes/class.ilObjTest.php";
                        $pass = ilObjTest::_getPass($active_id);
                }
                
                $entered_values = 0;
 
                $this->getProcessLocker()->executeUserSolutionUpdateLockOperation(function() use (&$entered_values, $active_id, $pass, $authorized) {
 
                        $this->removeCurrentSolution($active_id, $pass, $authorized);
 
                        foreach($this->getSolutionSubmit() as $val1 => $val2)
                        {
                                $value = ilUtil::stripSlashes($val2, FALSE);
                                if(strlen($value))
                                {
                                        $this->saveCurrentSolution($active_id, $pass, $val1, $value, $authorized);
                                        $entered_values++;
                                }
                        }
 
                });
 
                if ($entered_values)
                {
                        include_once ("./Modules/Test/classes/class.ilObjAssessmentFolder.php");
                        if (ilObjAssessmentFolder::_enabledAssessmentLogging())
                        {
                                assQuestion::logAction($this->lng->txtlng("assessment", "log_user_entered_values", ilObjAssessmentFolder::_getLogLanguage()), $active_id, $this->getId());
                        }
                }
                else
                {
                        include_once ("./Modules/Test/classes/class.ilObjAssessmentFolder.php");
                        if (ilObjAssessmentFolder::_enabledAssessmentLogging())
                        {
                                assQuestion::logAction($this->lng->txtlng("assessment", "log_user_not_entered_values", ilObjAssessmentFolder::_getLogLanguage()), $active_id, $this->getId());
                        }
                }
                return true;
        }
 
        // fau: testNav - overridden function lookupForExistingSolutions (specific for long menu question: ignore unselected values)
        public function lookupForExistingSolutions($activeId, $pass)
        {
                global $ilDB;
 
                $return = array(
                        'authorized' => false,
                        'intermediate' => false
                );
 
                $query = "
                        SELECT authorized, COUNT(*) cnt
                        FROM tst_solutions
                        WHERE active_fi = " . $ilDB->quote($activeId, 'integer') ."
                        AND question_fi = ". $ilDB->quote($this->getId(), 'integer') ."
                        AND pass = " .$ilDB->quote($pass, 'integer') ."
                        AND value2 <> '-1'
                ";
 
                if( $this->getStep() !== NULL )
                {
                        $query .= " AND step = " . $ilDB->quote((int)$this->getStep(), 'integer') . " ";
                }
 
                $query .= "
                        GROUP BY authorized
                ";
 
                $result = $ilDB->query($query);
 
                while ($row = $ilDB->fetchAssoc($result))
                {
                        if ($row['authorized']) {
                                $return['authorized'] = $row['cnt'] > 0;
                        }
                        else
                        {
                                $return['intermediate'] = $row['cnt'] > 0;
                        }
                }
                return $return;
        }
// fau.
 
 
        public function getSolutionSubmit()
        {
                $solutionSubmit = array();
                $answer = ilUtil::stripSlashesRecursive($_POST['answer']);
                
                foreach($answer as $key => $value)
                {
                        $solutionSubmit[$key] = $value;
                }
 
                return $solutionSubmit;
        }
        
        protected function savePreviewData(ilAssQuestionPreviewSession $previewSession)
        {
                if( array_key_exists('answer',$_POST) )
                {
                        $previewSession->setParticipantsSolution($_POST['answer']);
                }
                else
                {
                        $previewSession->setParticipantsSolution(null);
                }
        }
 
        protected function reworkWorkingData($active_id, $pass, $obligationsAnswered, $authorized)
        {
                // nothing to rework!
        }
        
        public function getQuestionType()
        {
                return "assLongMenu";
        }
 
        public function getAdditionalTableName()
        {
                return 'qpl_qst_lome';
        }
 
        function getRTETextWithMediaObjects()
        {
                return parent::getRTETextWithMediaObjects() . $this->getLongMenuTextValue();
        }
 
        public function setExportDetailsXLS($worksheet, $startrow, $active_id, $pass)
        {
                parent::setExportDetailsXLS($worksheet, $startrow, $active_id, $pass);
 
                $solution = $this->getSolutionValues($active_id, $pass);
 
                $i = 1;
                foreach ($this->getCorrectAnswers() as $gap_index => $gap)
                {
                        $worksheet->setCell($startrow + $i, 0, $this->lng->txt('assLongMenu') . " $i");
                        $worksheet->setBold($worksheet->getColumnCoord(0) . ($startrow + $i));
                        foreach ($solution as $solutionvalue)
                        {
                                if ($gap_index == $solutionvalue["value1"])
                                {
                                        switch ($gap[2])
                                        {
                                                case self::ANSWER_TYPE_SELECT_VAL:
                                                        $value = $solutionvalue["value2"];
                                                        if($value == -1)
                                                        {
                                                                $value = '';
                                                        }
                                                        $worksheet->setCell($startrow + $i, 1, $value);
                                                        break;
                                                case self::ANSWER_TYPE_TEXT_VAL:
                                                        $worksheet->setCell($startrow + $i, 1, $solutionvalue["value2"]);
                                                        break;
                                        }
                                }
                        }
                        $i++;
                }
 
                return $startrow + $i + 1;
        }
        
        public function getUserQuestionResult($active_id, $pass)
        {
                $result = new ilUserQuestionResult($this, $active_id, $pass);
 
                $points = $this->calculateReachedPoints($active_id, $pass);
                $max_points = $this->getMaximumPoints();
 
                $result->setReachedPercentage(($points/$max_points) * 100);
 
                return $result;
        }
 
        public function getAvailableAnswerOptions($index = null)
        {
                return $this->createArrayFromFile();
        }
        
        public function isShuffleAnswersEnabled()
        {
                return false;
        }
 
        public function clearAnswerSpecificDataFromDb($question_id)
        {
                $this->ilDB->manipulateF( 'DELETE FROM ' . $this->getAnswerTableName() .' WHERE question_fi = %s',
                        array( 'integer' ),
                        array( $question_id )
                );
        }
 
        public function delete($original_id)
        {
                parent::delete($original_id);
                $this->clearFolder(false);
        }
        
        protected function lmMigrateQuestionTypeSpecificContent(ilAssSelfAssessmentMigrator $migrator)
        {
                $this->setLongMenuTextValue( $migrator->migrateToLmContent($this->getLongMenuTextValue()) );
        }
        
        public function toJSON()
        {
                include_once("./Services/RTE/classes/class.ilRTE.php");
                $result = array();
                $result['id'] = (int) $this->getId();
                $result['type'] = (string) $this->getQuestionType();
                $result['title'] = (string) $this->getTitle();
                $replaced_quesiton_text =  $this->getLongMenuTextValue();
                $result['question'] =  $this->formatSAQuestion($this->getQuestion());
                $result['lmtext'] =  $this->formatSAQuestion($replaced_quesiton_text);
                $result['nr_of_tries'] = (int) $this->getNrOfTries();
                $result['shuffle'] = (bool) $this->getShuffle();
                $result['feedback'] = array(
                        'onenotcorrect' => $this->formatSAQuestion($this->feedbackOBJ->getGenericFeedbackTestPresentation($this->getId(), false)),
                        'allcorrect' => $this->formatSAQuestion($this->feedbackOBJ->getGenericFeedbackTestPresentation($this->getId(), true))
                );
                
                $mobs = ilObjMediaObject::_getMobsOfObject("qpl:html", $this->getId());
                $result['answers'] = $this->getAnswers();
                $result['correct_answers'] = $this->getCorrectAnswers();
                $result['mobs'] = $mobs;
                return json_encode($result);
        }
}