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
{
    protected $lng;

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

        $ilDB = $DIC->database();
        $lng = $DIC->language();

        $this->db = $ilDB;
        $this->lng = $lng;
        
        $this->lng->loadLanguageModule('assessment');

        $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);

        if (!is_object($this->q_gui->object)) {
            return "Error: Question not found.";
        }

        $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";
        }
    }
    
    public static function indicateNewSco()
    {
        self::$exported = array();
        self::$mobs = array();
        self::$media_files = array();
    }
    
    public static function getMobs()
    {
        $allmobs = array();
        foreach (self::$mobs as $key => $value) {
            for ($i = 0;$i < count(self::$mobs[$key]);$i++) {
                array_push($allmobs, self::$mobs[$key][$i]);
            }
        }
        return $allmobs;
    }
    
    public static function getFiles()
    {
        return self::$media_files;
    }
    
    public static function questionsJS(array $a_qids = null)
    {
        $exportstring = '';
        if (!is_array($a_qids)) {
            $exportstring = 'var questions = new Array();';
        }
        foreach (self::$exported as $key => $value) {
            if (!is_array($a_qids) || in_array($key, $a_qids)) {
                $exportstring .= "questions[$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()
    {
        // do not! use $GLOBALS['DIC']["tpl"]
        // or $DIC->ui()->mainTemplate()
        // at this point because LMs does init an own main template
        // and currently replaces only $GLOBALS["tpl"] with the new one
        $main_tpl = $GLOBALS["tpl"];
        $this->q_gui->populateJavascriptFilesRequiredForWorkForm($main_tpl);
        $main_tpl->addCss('Modules/Test/templates/default/ta.css');
        
        $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->json_decoded->selection_limit) {
            $this->tpl->setVariable('SELECTION_LIMIT_HINT', sprintf(
                $this->lng->txt('ass_mc_sel_lim_hint'),
                $this->json_decoded->selection_limit,
                count($this->json_decoded->answers)
            ));
            
            $this->tpl->setVariable('SELECTION_LIMIT_VALUE', $this->json_decoded->selection_limit);
        } else {
            $this->tpl->setVariable('SELECTION_LIMIT_VALUE', 'null');
        }
        if ($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 assKprimChoice()
    {
        global $DIC;
        $main_tpl = $DIC["tpl"];

        $main_tpl->addCss('Modules/Test/templates/default/ta.css');
        
        $this->tpl->setCurrentBlock("kprimchoice");
        
        $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.handleKprimImages(" . $this->json_decoded->id . ");"
            );
        }
        
        $this->tpl->setVariable('OPTION_LABEL_TRUE', $this->json_decoded->trueOptionLabel);
        $this->tpl->setVariable('OPTION_LABEL_FALSE', $this->json_decoded->falseOptionLabel);
        
        $this->tpl->setVariable('VALUE_TRUE', 1);
        $this->tpl->setVariable('VALUE_FALSE', 0);
        
        $this->tpl->parseCurrentBlock();

        foreach ($this->json_decoded->answers as $answer) {
            if (is_object($answer->image)) {
                self::$media_files[] = $answer->getImageFsPath();
                self::$media_files[] = $answer->getThumbFsPath();
            } elseif (is_string($answer->image)) {
                self::$media_files[] = $this->q_gui->object->getImagePath() . $answer->image;
                if (is_file($this->q_gui->object->getImagePath() . "thumb." . $answer->image)) {
                    self::$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 assLongMenu()
    {
        $this->tpl->setCurrentBlock("longmenu");
        $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()
    {
        global $DIC;
        $main_tpl = $DIC["tpl"];

        $main_tpl->addJavaScript('Modules/TestQuestionPool/js/ilMatchingQuestion.js');
        $main_tpl->addCss('Modules/TestQuestionPool/templates/default/test_javascript.css');
        $this->tpl->setCurrentBlock("matchingquestion");
        $this->tpl->setVariable("VAL_ID", $this->json_decoded->id);
        $this->tpl->setVariable("BTN_LABEL_RESET", $this->lng->txt("reset_terms"));
        $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) {
            $this->tpl->setVariable("VAL_TOOLTIP", htmlspecialchars($area->answertext));
            $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()
    {
        $maxlength = $this->json_decoded->maxlength == 0 ? 4096 : $this->json_decoded->maxlength;
        $this->tpl->setCurrentBlock("textsubset");
        $this->tpl->setVariable("VAL_ID", $this->json_decoded->id);
        $this->tpl->setVariable("TXT_SUBMIT_ANSWERS", $this->lng->txt("cont_submit_answers"));
        if ($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();
    }
}