class.ilQuestionExporter.php

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<?php
/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */


require_once("./Modules/TestQuestionPool/classes/class.assQuestionGUI.php");

class ilQuestionExporter
{
        static $exported = array(); //json data for all exported questions (class variable)
        static $mobs = array(); //json data for all mobs  (class variable)
        static $media_files = array(); //json data for all files  (class variable)
        
        var $db;                        // database object
        var $ilias;                     // ilias object
        var $ref_id;            // reference ID
        var $inst_id;           // installation id
        var $q_gui;                     // Question GUI object
        var $tpl;                       // question template
        var $json;                      // json object for current question
        var $json_decoded;      // json object (decoded) for current question
        var $preview_mode;      // preview mode activated yes/no
        
        public function ilQuestionExporter($a_preview_mode = false)
        {
                global $ilDB, $ilias, $lng;

                $this->ref_id =& $a_ref_id;

                $this->db =& $ilDB;
                $this->lng = $lng;

                $this->inst_id = IL_INST_ID;
                
                $this->preview_mode = $a_preview_mode;
                
                $this->tpl = new ilTemplate("tpl.question_export.html", true, true, "Modules/Scorm2004");
                
                // fix for bug 5386, alex 29.10.2009
                if (!$a_preview_mode)
                {
                        $this->tpl->setVariable("FORM_BEGIN", "<form onsubmit='return false;'>");
                        $this->tpl->setVariable("FORM_END", "</form>");
                }

        }
        
        
        public function exportQuestion($a_ref_id, $a_image_path = null, $a_output_mode = "presentation") {
                
                if ($a_ref_id != "")
                {
                        $inst_id = ilInternalLink::_extractInstOfTarget($a_ref_id);
                        if (!($inst_id > 0))
                        {
                                $q_id = ilInternalLink::_extractObjIdOfTarget($a_ref_id);
                        }
                }

                $this->q_gui =& assQuestionGUI::_getQuestionGUI("", $q_id);
                
                $type = $this->q_gui->object->getQuestionType();
                if (method_exists($this,$type))
                {
                        $this->q_gui->object->setExportImagePath($a_image_path);
                        $this->q_gui->object->feedbackOBJ->setPageObjectOutputMode($a_output_mode);
                        $this->json = $this->q_gui->object->toJSON();
                        $this->json_decoded = json_decode($this->json);

                        self::$exported[$this->json_decoded->id] = $this->json;
                        self::$mobs[$this->json_decoded->id] = $this->json_decoded->mobs;
                        return $this->$type();
                } else {
                        return "Error: Question Type not implemented/Question editing not finished";
                }
        }
        
        static public function indicateNewSco() {
                self::$exported = array();
                self::$mobs = array(); 
                self::$media_files = array(); 
        }
        
        static public function getMobs() {
                $allmobs = array();
                foreach (self::$mobs as $key => $value) {
                        for ($i=0;$i<count($mobs[$key]);$i++) {
                                array_push($allmobs,$mobs[$key][$i]);
                        }
                }
                return $allmobs;
        }
        
        static public function getFiles() {
                return self::$media_files;
        }
        
        static public function questionsJS() {
                $exportstring ='var questions = new Array();';
                foreach (self::$exported as $key => $value) {
                        $exportstring .= "questions[$key]= $value;";
                }
                return $exportstring;
        }
        
        private function setHeaderFooter()
        {
                $this->tpl->setCurrentBlock("common");
                $this->tpl->setVariable("VAL_ID", $this->json_decoded->id);
                $this->tpl->setVariable("VAL_TYPE", $this->json_decoded->type);
                $this->tpl->parseCurrentBlock();
        }
        
        private function assSingleChoice()
        {
                $this->tpl->setCurrentBlock("singlechoice");
                $this->tpl->setVariable("TXT_SUBMIT_ANSWERS", $this->lng->txt("cont_submit_answers"));
                $this->tpl->setVariable("VAL_ID", $this->json_decoded->id);
                if ($this->preview_mode) {
                        $this->tpl->setVariable("VAL_NO_DISPLAY", "style=\"display:none\"");
                }
                if($this->json_decoded->path)
                {
                        $this->tpl->setVariable("HANDLE_IMAGES",
                                "ilias.questions.handleMCImages(".$this->json_decoded->id.");");
                }
                $this->tpl->parseCurrentBlock();
                foreach ($this->json_decoded->answers as $answer) {
                        if ($answer->image!="") {
                                array_push(self::$media_files,$this->q_gui->object->getImagePath().$answer->image);
                                if (is_file($this->q_gui->object->getImagePath()."thumb.".$answer->image))
                                {
                                        array_push(self::$media_files,$this->q_gui->object->getImagePath()."thumb.".$answer->image);
                                }
                        }
                }
//              $this->setHeaderFooter();
                return $this->tpl->get();
        }
        
        private function assMultipleChoice() {
                $this->tpl->setCurrentBlock("multiplechoice");
                $this->tpl->setVariable("TXT_SUBMIT_ANSWERS", $this->lng->txt("cont_submit_answers"));
                $this->tpl->setVariable("VAL_ID", $this->json_decoded->id);
                if ($this->preview_mode) {
                        $this->tpl->setVariable("VAL_NO_DISPLAY", "style=\"display:none\"");
                }
                if($this->json_decoded->path)
                {
                        $this->tpl->setVariable("HANDLE_IMAGES",
                                "ilias.questions.handleMCImages(".$this->json_decoded->id.");");
                }
                $this->tpl->parseCurrentBlock();
                foreach ($this->json_decoded->answers as $answer) {
                        if ($answer->image!="") {
                                array_push(self::$media_files,$this->q_gui->object->getImagePath().$answer->image);
                                array_push(self::$media_files,$this->q_gui->object->getImagePath()."thumb.".$answer->image);
                        }
                }
//              $this->setHeaderFooter();
                return $this->tpl->get();
        }
        
        
        private function assTextQuestion() {
                $maxlength = $this->json_decoded->maxlength == 0 ? 4096 : $this->json_decoded->maxlength;
                $this->tpl->setCurrentBlock("textquestion");
                $this->tpl->setVariable("VAL_ID", $this->json_decoded->id);
                $this->tpl->setVariable("TXT_SUBMIT_ANSWERS", $this->lng->txt("cont_submit_answers"));
                $this->tpl->setVariable("VAL_MAXLENGTH", $maxlength);
                if ($this->preview_mode) {
                        $this->tpl->setVariable("VAL_NO_DISPLAY", "style=\"display:none\"");
                }
                $this->tpl->parseCurrentBlock();
//              $this->setHeaderFooter();
                return $this->tpl->get();
        }
        
        private function assClozeTest() {
                $this->tpl->setCurrentBlock("clozequestion");
                $this->tpl->setVariable("VAL_ID", $this->json_decoded->id);
                $this->tpl->setVariable("TXT_SUBMIT_ANSWERS", $this->lng->txt("cont_submit_answers"));
                if ($this->preview_mode) {
                        $this->tpl->setVariable("VAL_NO_DISPLAY", "style=\"display:none\"");
                }
                $this->tpl->parseCurrentBlock();
//              $this->setHeaderFooter();
                return $this->tpl->get();
        }
        
        private function assOrderingQuestion() {
                $this->tpl->setCurrentBlock("orderingquestion");
                $this->tpl->setVariable("VAL_ID", $this->json_decoded->id);
                $this->tpl->setVariable("TXT_SUBMIT_ANSWERS", $this->lng->txt("cont_submit_answers"));
                if ($this->preview_mode) {
                        $this->tpl->setVariable("VAL_NO_DISPLAY", "style=\"display:none\"");
                }
                if($this->q_gui->object->getOrderingType() == OQ_PICTURES)
                {
                        $this->tpl->setVariable("VAL_SUBTYPE", "_images");
                        $this->tpl->setVariable("HANDLE_IMAGES",
                                "ilias.questions.handleOrderingImages(".$this->json_decoded->id.");");

                        foreach ($this->json_decoded->answers as $answer) {
                                if ($answer->answertext!="") {
                                        array_push(self::$media_files,$this->q_gui->object->getImagePath().$answer->answertext);
                                        array_push(self::$media_files,$this->q_gui->object->getImagePath()."thumb.".$answer->answertext);
                                }
                        }
                }
                else
                {
                        $this->tpl->setVariable("VAL_SUBTYPE", "_terms");
                }
                $this->tpl->parseCurrentBlock();
//              $this->setHeaderFooter();
                return $this->tpl->get();       
        }
        
        private function assMatchingQuestion() {
                $this->tpl->setCurrentBlock("matchingquestion");
                $this->tpl->setVariable("VAL_ID", $this->json_decoded->id);
                $this->tpl->setVariable("TXT_SUBMIT_ANSWERS", $this->lng->txt("cont_submit_answers"));
                if ($this->preview_mode) {
                        $this->tpl->setVariable("VAL_NO_DISPLAY", "style=\"display:none\"");
                }
                $this->tpl->parseCurrentBlock();
//              $this->setHeaderFooter();
                return $this->tpl->get();       
        }
        
        private function assImagemapQuestion() {
                $this->tpl->setVariable("TXT_SUBMIT_ANSWERS", $this->lng->txt("cont_submit_answers"));
                array_push(self::$media_files,$this->q_gui->object->getImagePath().$this->q_gui->object->getImageFilename());
                $this->tpl->setCurrentBlock("mapareas");
                $areas = $this->json_decoded->answers;
                //set areas in PHP cause of inteference between pure and highlighter
                foreach ($areas as $area) {
                        $this->tpl->setVariable("VAL_COORDS", $area->coords);
                        $this->tpl->setVariable("VAL_ORDER", $area->order);
                        $this->tpl->setVariable("VAL_AREA", $area->area);
                        $this->tpl->setVariable("VAL_ID", $this->json_decoded->id);
                        $this->tpl->parseCurrentBlock();        
                }
                $this->tpl->setCurrentBlock("imagemapquestion");
                $this->tpl->setVariable("VAL_ID", $this->json_decoded->id);
                if ($this->preview_mode) {
                        $this->tpl->setVariable("VAL_NO_DISPLAY", "style=\"display:none\"");
                }
                $this->tpl->parseCurrentBlock();
//              $this->setHeaderFooter();       
                return $this->tpl->get();
        }

        private function assTextSubset() {
                $this->tpl->setCurrentBlock("textsubset");
                $this->tpl->setVariable("VAL_ID", $this->json_decoded->id);
                $this->tpl->setVariable("TXT_SUBMIT_ANSWERS", $this->lng->txt("cont_submit_answers"));
                $this->tpl->setVariable("VAL_MAXLENGTH", $maxlength);
                if ($this->preview_mode) {
                        $this->tpl->setVariable("VAL_NO_DISPLAY", "style=\"display:none\"");
                }
                $this->tpl->parseCurrentBlock();
//              $this->setHeaderFooter();
                return $this->tpl->get();
        }

        private function assOrderingHorizontal() {
                $this->tpl->setCurrentBlock("orderinghorizontal");
                $this->tpl->setVariable("VAL_ID", $this->json_decoded->id);
                $this->tpl->setVariable("TXT_SUBMIT_ANSWERS", $this->lng->txt("cont_submit_answers"));
                if ($this->preview_mode) {
                        $this->tpl->setVariable("VAL_NO_DISPLAY", "style=\"display:none\"");
                }
                $this->tpl->parseCurrentBlock();
//              $this->setHeaderFooter();
                return $this->tpl->get();       
        }

        private function assErrorText() {
                $this->tpl->setCurrentBlock("errortext");
                $this->tpl->setVariable("VAL_ID", $this->json_decoded->id);
                $this->tpl->setVariable("TXT_SUBMIT_ANSWERS", $this->lng->txt("cont_submit_answers"));
                if ($this->preview_mode) {
                        $this->tpl->setVariable("VAL_NO_DISPLAY", "style=\"display:none\"");
                }
                $this->tpl->parseCurrentBlock();
//              $this->setHeaderFooter();
                return $this->tpl->get();
        }
}

?>