Modules/SurveyQuestionPool/classes/class.SurveyMatrixQuestionGUI.php

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<?php
 /*
   +----------------------------------------------------------------------------+
   | ILIAS open source                                                          |
   +----------------------------------------------------------------------------+
   | Copyright (c) 1998-2001 ILIAS open source, University of Cologne           |
   |                                                                            |
   | This program is free software; you can redistribute it and/or              |
   | modify it under the terms of the GNU General Public License                |
   | as published by the Free Software Foundation; either version 2             |
   | of the License, or (at your option) any later version.                     |
   |                                                                            |
   | This program is distributed in the hope that it will be useful,            |
   | but WITHOUT ANY WARRANTY; without even the implied warranty of             |
   | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              |
   | GNU General Public License for more details.                               |
   |                                                                            |
   | You should have received a copy of the GNU General Public License          |
   | along with this program; if not, write to the Free Software                |
   | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
   +----------------------------------------------------------------------------+
*/

include_once "./Modules/SurveyQuestionPool/classes/class.SurveyQuestionGUI.php";
include_once "./Modules/Survey/classes/inc.SurveyConstants.php";

class SurveyMatrixQuestionGUI extends SurveyQuestionGUI 
{
        var $show_layout_row;
        
  function SurveyMatrixQuestionGUI(
                $id = -1
  )

  {
                $this->SurveyQuestionGUI();
                include_once "./Modules/SurveyQuestionPool/classes/class.SurveyMatrixQuestion.php";
                $this->object = new SurveyMatrixQuestion();
                $this->show_layout_row = FALSE;
                if ($id >= 0)
                {
                        $this->object->loadFromDb($id);
                }
        }

        function &executeCommand()
        {
                $cmd = $this->ctrl->getCmd();
                $next_class = $this->ctrl->getNextClass($this);

                $cmd = $this->getCommand($cmd);
                switch($next_class)
                {
                        default:
                                $ret =& $this->$cmd();
                                break;
                }
                return $ret;
        }

  function editQuestion() 
        {
                $this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_svy_qpl_matrix.html", "Modules/SurveyQuestionPool");
          $this->tpl->addBlockFile("OTHER_QUESTION_DATA", "other_question_data", "tpl.il_svy_qpl_other_question_data.html", "Modules/SurveyQuestionPool");
                
                $subtypes = array(
                        "0" => "matrix_subtype_sr",
                        "1" => "matrix_subtype_mr",
                        //"2" => "matrix_subtype_text",
                        //"3" => "matrix_subtype_integer",
                        //"4" => "matrix_subtype_double",
                        //"5" => "matrix_subtype_date",
                        //"6" => "matrix_subtype_time"
                );
                
                foreach ($subtypes as $value => $text)
                {
                        $this->tpl->setCurrentBlock("subtype_row");
                        $this->tpl->setVariable("VALUE_SUBTYPE", $value);
                        $this->tpl->setVariable("TEXT_SUBTYPE", $this->lng->txt($text));
                        if ($value == $this->object->getSubtype())
                        {
                                $this->tpl->setVariable("CHECKED_SUBTYPE", " checked=\"checked\"");
                        }
                        $this->tpl->parseCurrentBlock();
                }
                
                $internallinks = array(
                        "lm" => $this->lng->txt("obj_lm"),
                        "st" => $this->lng->txt("obj_st"),
                        "pg" => $this->lng->txt("obj_pg"),
                        "glo" => $this->lng->txt("glossary_term")
                );
                foreach ($internallinks as $key => $value)
                {
                        $this->tpl->setCurrentBlock("internallink");
                        $this->tpl->setVariable("TYPE_INTERNAL_LINK", $key);
                        $this->tpl->setVariable("TEXT_INTERNAL_LINK", $value);
                        $this->tpl->parseCurrentBlock();
                }
                
                $this->tpl->setCurrentBlock("adm_content");
                $this->tpl->setVariable("TEXT_MATERIAL", $this->lng->txt("material"));
                if (count($this->object->material))
                {
                        include_once "./Modules/SurveyQuestionPool/classes/class.SurveyQuestion.php";
                        $href = SurveyQuestion::_getInternalLinkHref($this->object->material["internal_link"]);
                        $this->tpl->setVariable("TEXT_VALUE_MATERIAL", " <a href=\"$href\" target=\"content\">" . $this->lng->txt("material"). "</a> ");
                        $this->tpl->setVariable("BUTTON_REMOVE_MATERIAL", $this->lng->txt("remove"));
                        $this->tpl->setVariable("BUTTON_ADD_MATERIAL", $this->lng->txt("change"));
                        $this->tpl->setVariable("VALUE_MATERIAL", $this->object->material["internal_link"]);
                        $this->tpl->setVariable("VALUE_MATERIAL_TITLE", $this->object->material["title"]);
                        $this->tpl->setVariable("TEXT_TITLE", $this->lng->txt("title"));
                }
                else
                {
                        $this->tpl->setVariable("BUTTON_ADD_MATERIAL", $this->lng->txt("add"));
                }
                $this->tpl->setVariable("TEXT_ORIENTATION", $this->lng->txt("orientation"));
                $this->tpl->setVariable("QUESTION_ID", $this->object->getId());
                $this->tpl->setVariable("VALUE_TITLE", $this->object->getTitle());
                $this->tpl->setVariable("VALUE_DESCRIPTION", $this->object->getDescription());
                $this->tpl->setVariable("VALUE_AUTHOR", $this->object->getAuthor());
                $questiontext = $this->object->getQuestiontext();
                $this->tpl->setVariable("VALUE_QUESTION", ilUtil::prepareFormOutput($this->object->prepareTextareaOutput($questiontext)));
                $this->tpl->setVariable("TEXT_TITLE", $this->lng->txt("title"));
                $this->tpl->setVariable("TEXT_AUTHOR", $this->lng->txt("author"));
                $this->tpl->setVariable("TEXT_DESCRIPTION", $this->lng->txt("description"));
                $this->tpl->setVariable("TEXT_QUESTION", $this->lng->txt("question"));
                $this->tpl->setVariable("TEXT_QUESTION_TYPE", $this->lng->txt("questiontype"));
                $this->tpl->setVariable("TEXT_OBLIGATORY", $this->lng->txt("obligatory"));
                if ($this->object->getObligatory())
                {
                        $this->tpl->setVariable("CHECKED_OBLIGATORY", " checked=\"checked\"");
                }
                
                $this->tpl->setVariable("TEXT_APPEARANCE", $this->lng->txt("matrix_appearance"));
                $this->tpl->setVariable("TEXT_COLUMN_SEPARATORS", $this->lng->txt("matrix_column_separators"));
                $this->tpl->setVariable("TEXT_ROW_SEPARATORS", $this->lng->txt("matrix_row_separators"));
                $this->tpl->setVariable("TEXT_NEUTRAL_COLUMN_SEPARATOR", $this->lng->txt("matrix_neutral_column_separator"));
                $this->tpl->setVariable("DESCRIPTION_NEUTRAL_COLUMN_SEPARATOR", $this->lng->txt("matrix_neutral_column_separator_description"));
                $this->tpl->setVariable("DESCRIPTION_ROW_SEPARATORS", $this->lng->txt("matrix_row_separators_description"));
                $this->tpl->setVariable("DESCRIPTION_COLUMN_SEPARATORS", $this->lng->txt("matrix_column_separators_description"));
                if ($this->object->getRowSeparators())
                {
                        $this->tpl->setVariable("CHECKED_ROW_SEPARATORS", " checked=\"checked\"");
                }
                if ($this->object->getColumnSeparators())
                {
                        $this->tpl->setVariable("CHECKED_COLUMN_SEPARATORS", " checked=\"checked\"");
                }
                if ($this->object->getNeutralColumnSeparator())
                {
                        $this->tpl->setVariable("CHECKED_NEUTRAL_COLUMN_SEPARATOR", " checked=\"checked\"");
                }
                
                $this->tpl->setVariable("SAVE",$this->lng->txt("save"));
                $this->tpl->setVariable("TXT_REQUIRED_FLD", $this->lng->txt("required_field"));
                $this->tpl->setVariable("FORMACTION", $this->ctrl->getFormAction($this, "editQuestion"));
                $this->tpl->setVariable("TEXT_QUESTION_TYPE", $this->lng->txt($this->getQuestionType()));
                $this->tpl->setVariable("TEXT_SUBTYPE", $this->lng->txt("subtype"));
                $this->tpl->setVariable("DESCRIPTION_SUBTYPE", $this->lng->txt("matrix_subtype_description"));
                $this->tpl->parseCurrentBlock();
                
                include_once "./Services/RTE/classes/class.ilRTE.php";
                $rtestring = ilRTE::_getRTEClassname();
                include_once "./Services/RTE/classes/class.$rtestring.php";
                $rte = new $rtestring();
                $rte->addPlugin("latex");               
                $rte->addButton("latex"); $rte->addButton("pastelatex");
                $rte->removePlugin("ibrowser");
                include_once "./classes/class.ilObject.php";
                $obj_id = $_GET["q_id"];
                $obj_type = ilObject::_lookupType($_GET["ref_id"], TRUE);
                $rte->addRTESupport($obj_id, $obj_type, "survey");
  }

        function getWorkingForm($working_data = "", $question_title = 1, $show_questiontext = 1, $error_message = "")
        {
                $layout = $this->object->getLayout();
                $neutralstyle = "3px solid #808080";
                $bordercolor = "#808080";
                $template = new ilTemplate("tpl.il_svy_out_matrix.html", TRUE, TRUE, "Modules/SurveyQuestionPool");
                if (count($this->object->material))
                {
                        $template->setCurrentBlock("material_matrix");
                        include_once "./Modules/SurveyQuestionPool/classes/class.SurveyQuestion.php";
                        $href = SurveyQuestion::_getInternalLinkHref($this->object->material["internal_link"]);
                        $template->setVariable("TEXT_MATERIAL", $this->lng->txt("material") . ": <a href=\"$href\" target=\"content\">" . $this->object->material["title"]. "</a> ");
                        $template->parseCurrentBlock();
                }
                
                if ($this->show_layout_row)
                {
                        $layout_row = $this->getLayoutRow();
                        $template->setCurrentBlock("matrix_row");
                        $template->setVariable("ROW", $layout_row);
                        $template->parseCurrentBlock();
                }
                
                $tplheaders = new ilTemplate("tpl.il_svy_out_matrix_columnheaders.html", TRUE, TRUE, "Modules/SurveyQuestionPool");
                if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
                {
                        $tplheaders->setCurrentBlock("bipolar_start");
                        $style = array();
                        array_push($style, sprintf("width: %.2f%s!important", $layout["percent_bipolar_adjective1"], "%"));
                        if (count($style) > 0)
                        {
                                $tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
                        }
                        $tplheaders->parseCurrentBlock();
                }
                // column headers
                for ($i = 0; $i < $this->object->getColumnCount(); $i++)
                {
                        $style = array();
                        if ($this->object->getColumnSeparators() == 1)
                        {
                                if (($i < $this->object->getColumnCount() - 1))
                                {
                                        array_push($style, "border-right: 1px solid $bordercolor!important");
                                }
                        }
                        array_push($style, sprintf("width: %.2f%s!important", $layout["percent_columns"] / $this->object->getColumnCount(), "%"));
                        $tplheaders->setCurrentBlock("column_header");
                        $tplheaders->setVariable("TEXT", ilUtil::prepareFormOutput($this->object->getColumn($i)));
                        $tplheaders->setVariable("CLASS", "center");
                        if (count($style) > 0)
                        {
                                $tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
                        }
                        $tplheaders->parseCurrentBlock();
                }
                if (strlen($this->object->getNeutralColumn()))
                {
                        $tplheaders->setCurrentBlock("neutral_column_header");
                        $tplheaders->setVariable("TEXT", ilUtil::prepareFormOutput($this->object->getNeutralColumn()));
                        $tplheaders->setVariable("CLASS", "rsep");
                        $style = array();
                        array_push($style, sprintf("width: %.2f%s!important", $layout["percent_neutral"], "%"));
                        if ($this->object->getNeutralColumnSeparator())
                        {
                                array_push($style, "border-left: $neutralstyle!important;");
                        }
                        if (count($style) > 0)
                        {
                                $tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
                        }
                        $tplheaders->parseCurrentBlock();
                }
                if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
                {
                        $tplheaders->setCurrentBlock("bipolar_end");
                        $style = array();
                        array_push($style, sprintf("width: %.2f%s!important", $layout["percent_bipolar_adjective2"], "%"));
                        if (count($style) > 0)
                        {
                                $tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
                        }
                        $tplheaders->parseCurrentBlock();
                }

                $style = array();
                array_push($style, sprintf("width: %.2f%s!important", $layout["percent_row"], "%"));
                if (count($style) > 0)
                {
                        $tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
                }
                
                $template->setCurrentBlock("matrix_row");
                $template->setVariable("ROW", $tplheaders->get());
                $template->parseCurrentBlock();

                $rowclass = array("tblrow1", "tblrow2");
                
                for ($i = 0; $i < $this->object->getRowCount(); $i++)
                {
                        $tplrow = new ilTemplate("tpl.il_svy_out_matrix_row.html", TRUE, TRUE, "Modules/SurveyQuestionPool");
                        for ($j = 0; $j < $this->object->getColumnCount(); $j++)
                        {
                                if (($i == 0) && ($j == 0))
                                {
                                        if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
                                        {
                                                $tplrow->setCurrentBlock("bipolar_start");
                                                $tplrow->setVariable("TEXT_BIPOLAR_START", ilUtil::prepareFormOutput($this->object->getBipolarAdjective(0)));
                                                $tplrow->setVariable("ROWSPAN", $this->object->getRowCount());
                                                $tplrow->parseCurrentBlock();
                                        }
                                }
                                if (($i == 0) && ($j == $this->object->getColumnCount()-1))
                                {
                                        if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
                                        {
                                                $tplrow->setCurrentBlock("bipolar_end");
                                                $tplrow->setVariable("TEXT_BIPOLAR_END", ilUtil::prepareFormOutput($this->object->getBipolarAdjective(1)));
                                                $tplrow->setVariable("ROWSPAN", $this->object->getRowCount());
                                                $tplrow->parseCurrentBlock();
                                        }
                                }
                                switch ($this->object->getSubtype())
                                {
                                        case 0:
                                                $tplrow->setCurrentBlock("radiobutton");
                                                $tplrow->setVariable("QUESTION_ID", $this->object->getId());
                                                $tplrow->setVariable("ROW", $i);
                                                $tplrow->setVariable("VALUE", $j);
                                                if (is_array($working_data))
                                                {
                                                        foreach ($working_data as $data)
                                                        {
                                                                if (($data["value"] == $j) && ($data["row"] == $i))
                                                                {
                                                                        $tplrow->setVariable("CHECKED_RADIOBUTTON", " checked=\"checked\"");
                                                                }
                                                        }
                                                }
                                                $tplrow->parseCurrentBlock();
                                                break;
                                        case 1:
                                                $tplrow->setCurrentBlock("checkbox");
                                                $tplrow->setVariable("QUESTION_ID", $this->object->getId());
                                                $tplrow->setVariable("ROW", $i);
                                                $tplrow->setVariable("VALUE", $j);
                                                if (is_array($working_data))
                                                {
                                                        foreach ($working_data as $data)
                                                        {
                                                                if (($data["value"] == $j) && ($data["row"] == $i))
                                                                {
                                                                        $tplrow->setVariable("CHECKED_CHECKBOX", " checked=\"checked\"");
                                                                }
                                                        }
                                                }
                                                $tplrow->parseCurrentBlock();
                                                break;
                                }
                                $tplrow->setCurrentBlock("answer");
                                $style = array();
                                
                                if ($this->object->getColumnSeparators() == 1)
                                {
                                        if ($j < $this->object->getColumnCount() - 1)
                                        {
                                                array_push($style, "border-right: 1px solid $bordercolor!important");
                                        }
                                }

                                if ($this->object->getRowSeparators() == 1)
                                {
                                        if ($i < $this->object->getRowCount() - 1)
                                        {
                                                array_push($style, "border-bottom: 1px solid $bordercolor!important");
                                        }
                                }
                                if (count($style))
                                {
                                        $tplrow->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
                                }
                                $tplrow->parseCurrentBlock();

                        }
                        
                        if (strlen($this->object->getNeutralColumn()))
                        {
                                $j = $this->object->getNeutralColumnIndex();
                                switch ($this->object->getSubtype())
                                {
                                        case 0:
                                                $tplrow->setCurrentBlock("neutral_radiobutton");
                                                $tplrow->setVariable("QUESTION_ID", $this->object->getId());
                                                $tplrow->setVariable("ROW", $i);
                                                $tplrow->setVariable("VALUE", $j);
                                                if (is_array($working_data))
                                                {
                                                        foreach ($working_data as $data)
                                                        {
                                                                if (($data["value"] == $j) && ($data["row"] == $i))
                                                                {
                                                                        $tplrow->setVariable("CHECKED_RADIOBUTTON", " checked=\"checked\"");
                                                                }
                                                        }
                                                }
                                                $tplrow->parseCurrentBlock();
                                                break;
                                        case 1:
                                                $tplrow->setCurrentBlock("neutral_checkbox");
                                                $tplrow->setVariable("QUESTION_ID", $this->object->getId());
                                                $tplrow->setVariable("ROW", $i);
                                                $tplrow->setVariable("VALUE", $j);
                                                if (is_array($working_data))
                                                {
                                                        foreach ($working_data as $data)
                                                        {
                                                                if (($data["value"] == $j) && ($data["row"] == $i))
                                                                {
                                                                        $tplrow->setVariable("CHECKED_CHECKBOX", " checked=\"checked\"");
                                                                }
                                                        }
                                                }
                                                $tplrow->parseCurrentBlock();
                                                break;
                                }
                                $tplrow->setCurrentBlock("neutral_answer");
                                $style = array();
                                if ($this->object->getNeutralColumnSeparator())
                                {
                                        array_push($style, "border-left: $neutralstyle!important");
                                }
                                if ($this->object->getColumnSeparators() == 1)
                                {
                                        if ($j < $this->object->getColumnCount() - 1)
                                        {
                                                array_push($style, "border-right: 1px solid $bordercolor!important");
                                        }
                                }

                                if ($this->object->getRowSeparators() == 1)
                                {
                                        if ($i < $this->object->getRowCount() - 1)
                                        {
                                                array_push($style, "border-bottom: 1px solid $bordercolor!important");
                                        }
                                }
                                if (count($style))
                                {
                                        $tplrow->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
                                }
                                $tplrow->parseCurrentBlock();
                        }

                        $tplrow->setVariable("TEXT_ROW", ilUtil::prepareFormOutput($this->object->getRow($i)));
                        $tplrow->setVariable("ROWCLASS", $rowclass[$i % 2]);
                        if ($this->object->getRowSeparators() == 1)
                        {
                                if ($i < $this->object->getRowCount() - 1)
                                {
                                        $tplrow->setVariable("STYLE", " style=\"border-bottom: 1px solid $bordercolor!important\"");
                                }
                        }
                        $template->setCurrentBlock("matrix_row");
                        $template->setVariable("ROW", $tplrow->get());
                        $template->parseCurrentBlock();
                }
                
                if ($question_title)
                {
                        $template->setVariable("QUESTION_TITLE", ilUtil::prepareFormOutput($this->object->getTitle()));
                }
                $template->setCurrentBlock("question_data_matrix");
                if (strcmp($error_message, "") != 0)
                {
                        $template->setVariable("ERROR_MESSAGE", "<p class=\"warning\">$error_message</p>");
                }
                if ($show_questiontext)
                {
                        $questiontext = $this->object->getQuestiontext();
                        $template->setVariable("QUESTIONTEXT", $this->object->prepareTextareaOutput($questiontext, TRUE));
                }
                if (! $this->object->getObligatory())
                {
                        $template->setVariable("OBLIGATORY_TEXT", $this->lng->txt("survey_question_optional"));
                }
                $template->parseCurrentBlock();
                return $template->get();
        }

        function getPrintView($question_title = 1, $show_questiontext = 1)
        {
                $layout = $this->object->getLayout();
                $neutralstyle = "3px solid #808080";
                $bordercolor = "#808080";
                $template = new ilTemplate("tpl.il_svy_qpl_matrix_printview.html", TRUE, TRUE, "Modules/SurveyQuestionPool");

                if ($this->show_layout_row)
                {
                        $layout_row = $this->getLayoutRow();
                        $template->setCurrentBlock("matrix_row");
                        $template->setVariable("ROW", $layout_row);
                        $template->parseCurrentBlock();
                }
                
                $tplheaders = new ilTemplate("tpl.il_svy_out_matrix_columnheaders.html", TRUE, TRUE, "Modules/SurveyQuestionPool");
                if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
                {
                        $tplheaders->setCurrentBlock("bipolar_start");
                        $style = array();
                        array_push($style, sprintf("width: %.2f%s!important", $layout["percent_bipolar_adjective1"], "%"));
                        if (count($style) > 0)
                        {
                                $tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
                        }
                        $tplheaders->parseCurrentBlock();
                }
                // column headers
                for ($i = 0; $i < $this->object->getColumnCount(); $i++)
                {
                        $style = array();
                        if ($this->object->getColumnSeparators() == 1)
                        {
                                if (($i < $this->object->getColumnCount() - 1))
                                {
                                        array_push($style, "border-right: 1px solid $bordercolor!important");
                                }
                        }
                        array_push($style, sprintf("width: %.2f%s!important", $layout["percent_columns"] / $this->object->getColumnCount(), "%"));
                        $tplheaders->setCurrentBlock("column_header");
                        $tplheaders->setVariable("TEXT", ilUtil::prepareFormOutput($this->object->getColumn($i)));
                        $tplheaders->setVariable("CLASS", "center");
                        if (count($style) > 0)
                        {
                                $tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
                        }
                        $tplheaders->parseCurrentBlock();
                }
                if (strlen($this->object->getNeutralColumn()))
                {
                        $tplheaders->setCurrentBlock("neutral_column_header");
                        $tplheaders->setVariable("TEXT", ilUtil::prepareFormOutput($this->object->getNeutralColumn()));
                        $tplheaders->setVariable("CLASS", "rsep");
                        $style = array();
                        array_push($style, sprintf("width: %.2f%s!important", $layout["percent_neutral"], "%"));
                        if ($this->object->getNeutralColumnSeparator())
                        {
                                array_push($style, "border-left: $neutralstyle!important;");
                        }
                        if (count($style) > 0)
                        {
                                $tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
                        }
                        $tplheaders->parseCurrentBlock();
                }
                if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
                {
                        $tplheaders->setCurrentBlock("bipolar_end");
                        $style = array();
                        array_push($style, sprintf("width: %.2f%s!important", $layout["percent_bipolar_adjective2"], "%"));
                        if (count($style) > 0)
                        {
                                $tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
                        }
                        $tplheaders->parseCurrentBlock();
                }

                $style = array();
                array_push($style, sprintf("width: %.2f%s!important", $layout["percent_row"], "%"));
                if (count($style) > 0)
                {
                        $tplheaders->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
                }
                
                $template->setCurrentBlock("matrix_row");
                $template->setVariable("ROW", $tplheaders->get());
                $template->parseCurrentBlock();

                $rowclass = array("tblrow1", "tblrow2");
                
                for ($i = 0; $i < $this->object->getRowCount(); $i++)
                {
                        $tplrow = new ilTemplate("tpl.il_svy_qpl_matrix_printview_row.html", TRUE, TRUE, "Modules/SurveyQuestionPool");
                        for ($j = 0; $j < $this->object->getColumnCount(); $j++)
                        {
                                if (($i == 0) && ($j == 0))
                                {
                                        if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
                                        {
                                                $tplrow->setCurrentBlock("bipolar_start");
                                                $tplrow->setVariable("TEXT_BIPOLAR_START", ilUtil::prepareFormOutput($this->object->getBipolarAdjective(0)));
                                                $tplrow->setVariable("ROWSPAN", $this->object->getRowCount());
                                                $tplrow->parseCurrentBlock();
                                        }
                                }
                                if (($i == 0) && ($j == $this->object->getColumnCount()-1))
                                {
                                        if ((strlen($this->object->getBipolarAdjective(0))) && (strlen($this->object->getBipolarAdjective(1))))
                                        {
                                                $tplrow->setCurrentBlock("bipolar_end");
                                                $tplrow->setVariable("TEXT_BIPOLAR_END", ilUtil::prepareFormOutput($this->object->getBipolarAdjective(1)));
                                                $tplrow->setVariable("ROWSPAN", $this->object->getRowCount());
                                                $tplrow->parseCurrentBlock();
                                        }
                                }
                                switch ($this->object->getSubtype())
                                {
                                        case 0:
                                                $tplrow->setCurrentBlock("radiobutton");
                                                $tplrow->setVariable("IMAGE_RADIO", ilUtil::getHtmlPath(ilUtil::getImagePath("radiobutton_unchecked.gif")));
                                                $tplrow->setVariable("ALT_RADIO", $this->lng->txt("unchecked"));
                                                $tplrow->setVariable("TITLE_RADIO", $this->lng->txt("unchecked"));
                                                $tplrow->parseCurrentBlock();
                                                break;
                                        case 1:
                                                $tplrow->setCurrentBlock("checkbox");
                                                $tplrow->setVariable("IMAGE_CHECKBOX", ilUtil::getHtmlPath(ilUtil::getImagePath("checkbox_unchecked.gif")));
                                                $tplrow->setVariable("ALT_CHECKBOX", $this->lng->txt("unchecked"));
                                                $tplrow->setVariable("TITLE_CHECKBOX", $this->lng->txt("unchecked"));
                                                $tplrow->parseCurrentBlock();
                                                break;
                                }
                                $tplrow->setCurrentBlock("answer");
                                $style = array();
                                
                                if ($this->object->getColumnSeparators() == 1)
                                {
                                        if ($j < $this->object->getColumnCount() - 1)
                                        {
                                                array_push($style, "border-right: 1px solid $bordercolor!important");
                                        }
                                }

                                if ($this->object->getRowSeparators() == 1)
                                {
                                        if ($i < $this->object->getRowCount() - 1)
                                        {
                                                array_push($style, "border-bottom: 1px solid $bordercolor!important");
                                        }
                                }
                                if (count($style))
                                {
                                        $tplrow->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
                                }
                                $tplrow->parseCurrentBlock();
                        }

                        if (strlen($this->object->getNeutralColumn()))
                        {
                                $j = $this->object->getRowCount();
                                switch ($this->object->getSubtype())
                                {
                                        case 0:
                                                $tplrow->setCurrentBlock("neutral_radiobutton");
                                                $tplrow->setVariable("IMAGE_RADIO", ilUtil::getHtmlPath(ilUtil::getImagePath("radiobutton_unchecked.gif")));
                                                $tplrow->setVariable("ALT_RADIO", $this->lng->txt("unchecked"));
                                                $tplrow->setVariable("TITLE_RADIO", $this->lng->txt("unchecked"));
                                                $tplrow->parseCurrentBlock();
                                                break;
                                        case 1:
                                                $tplrow->setCurrentBlock("neutral_checkbox");
                                                $tplrow->setVariable("IMAGE_CHECKBOX", ilUtil::getHtmlPath(ilUtil::getImagePath("checkbox_unchecked.gif")));
                                                $tplrow->setVariable("ALT_CHECKBOX", $this->lng->txt("unchecked"));
                                                $tplrow->setVariable("TITLE_CHECKBOX", $this->lng->txt("unchecked"));
                                                $tplrow->parseCurrentBlock();
                                                break;
                                }
                                $tplrow->setCurrentBlock("neutral_answer");
                                $style = array();
                                if ($this->object->getNeutralColumnSeparator())
                                {
                                        array_push($style, "border-left: $neutralstyle!important");
                                }
                                if ($this->object->getColumnSeparators() == 1)
                                {
                                        if ($j < $this->object->getColumnCount() - 1)
                                        {
                                                array_push($style, "border-right: 1px solid $bordercolor!important");
                                        }
                                }

                                if ($this->object->getRowSeparators() == 1)
                                {
                                        if ($i < $this->object->getRowCount() - 1)
                                        {
                                                array_push($style, "border-bottom: 1px solid $bordercolor!important");
                                        }
                                }
                                if (count($style))
                                {
                                        $tplrow->setVariable("STYLE", " style=\"" . implode(";", $style) . "\"");
                                }
                                $tplrow->parseCurrentBlock();
                        }

                        $tplrow->setVariable("TEXT_ROW", ilUtil::prepareFormOutput($this->object->getRow($i)));
                        $tplrow->setVariable("ROWCLASS", $rowclass[$i % 2]);
                        if ($this->object->getRowSeparators() == 1)
                        {
                                if ($i < $this->object->getRowCount() - 1)
                                {
                                        $tplrow->setVariable("STYLE", " style=\"border-bottom: 1px solid $bordercolor!important\"");
                                }
                        }
                        $template->setCurrentBlock("matrix_row");
                        $template->setVariable("ROW", $tplrow->get());
                        $template->parseCurrentBlock();
                }
                
                if ($question_title)
                {
                        $template->setVariable("QUESTION_TITLE", ilUtil::prepareFormOutput($this->object->getTitle()));
                }
                $template->setCurrentBlock();
                if ($show_questiontext)
                {
                        $questiontext = $this->object->getQuestiontext();
                        $template->setVariable("QUESTIONTEXT", $this->object->prepareTextareaOutput($questiontext, TRUE));
                }
                if (! $this->object->getObligatory())
                {
                        $template->setVariable("OBLIGATORY_TEXT", $this->lng->txt("survey_question_optional"));
                }
                $template->parseCurrentBlock();
                return $template->get();
        }
        
        function preview()
        {
                $this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_svy_qpl_preview.html", "Modules/SurveyQuestionPool");
                $question_output = $this->getWorkingForm();
                $this->tpl->setVariable("QUESTION_OUTPUT", $question_output);
                $this->tpl->parseCurrentBlock();
        }
        
        function layout()
        {
                $this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_svy_qpl_layout.html", "Modules/SurveyQuestionPool");
                $this->show_layout_row = TRUE;
                $question_output = $this->getWorkingForm();
                $this->tpl->setVariable("QUESTION_OUTPUT", $question_output);
                $this->tpl->setVariable("FORMACTION", $this->ctrl->getFormAction($this, "saveLayout"));
                $this->tpl->setVariable("SAVE", $this->lng->txt("save"));
                $this->tpl->parseCurrentBlock();
        }
        
        function saveLayout()
        {
                $this->object->saveLayout($_POST["percent_row"], $_POST['percent_columns'], $_POST['percent_bipolar_adjective1'], $_POST['percent_bipolar_adjective2'], $_POST["percent_neutral"]);
                $percent_values = array(
                        "percent_row" => $_POST["percent_row"],
                        "percent_columns" => $_POST["percent_columns"],
                        "percent_bipolar_adjective1" => $_POST['percent_bipolar_adjective1'],
                        "percent_bipolar_adjective2" => $_POST['percent_bipolar_adjective2'],
                        "percent_neutral" => $_POST["percent_neutral"]
                );
                $this->object->setLayout($percent_values);
                $this->layout();
        }

        function getLayoutRow()
        {
                $percent_values = $this->object->getLayout();
                $template = new ilTemplate("tpl.il_svy_out_matrix_layout.html", TRUE, TRUE, "Modules/SurveyQuestionPool");
                if (strlen($this->object->getBipolarAdjective(0)) && strlen($this->object->getBipolarAdjective(1)))
                {
                        $template->setCurrentBlock("bipolar_start");
                        $template->setVariable("VALUE_PERCENT_BIPOLAR_ADJECTIVE1", " value=\"" . $percent_values["percent_bipolar_adjective1"] . "\"");
                        $template->setVariable("STYLE", " style=\"width:" . $percent_values["percent_bipolar_adjective1"] . "%\"");
                        $template->parseCurrentBlock();
                        $template->setCurrentBlock("bipolar_end");
                        $template->setVariable("VALUE_PERCENT_BIPOLAR_ADJECTIVE2", " value=\"" . $percent_values["percent_bipolar_adjective2"] . "\"");
                        $template->setVariable("STYLE", " style=\"width:" . $percent_values["percent_bipolar_adjective2"] . "%\"");
                        $template->parseCurrentBlock();
                }
                if (strlen($this->object->getNeutralColumn()))
                {
                        $template->setCurrentBlock("bipolar_end");
                        $template->setVariable("VALUE_PERCENT_NEUTRAL", " value=\"" . $percent_values["percent_neutral"] . "\"");
                        $template->setVariable("STYLE_NEUTRAL", " style=\"width:" . $percent_values["percent_neutral"] . "%\"");
                        $template->parseCurrentBlock();
                }
                $template->setVariable("VALUE_PERCENT_ROW", " value=\"" . $percent_values["percent_row"] . "\"");
                $template->setVariable("STYLE_ROW", " style=\"width:" . $percent_values["percent_row"] . "%\"");
                $counter = $this->object->getColumnCount();
                $template->setVariable("COLSPAN_COLUMNS", $counter);
                $template->setVariable("VALUE_PERCENT_COLUMNS", " value=\"" . $percent_values["percent_columns"] . "\"");
                $template->setVariable("STYLE_COLUMNS", " style=\"width:" . $percent_values["percent_columns"] . "%\"");
                return $template->get();
        }
        
  function writePostData() 
        {
    $result = 0;
    if ((!$_POST["title"]) or (!$_POST["author"]) or (!$_POST["question"]))
      $result = 1;

    // Set the question id from a hidden form parameter
    if ($_POST["id"] > 0)
      $this->object->setId($_POST["id"]);
                include_once "./Services/Utilities/classes/class.ilUtil.php";
    $this->object->setTitle(ilUtil::stripSlashes($_POST["title"]));
    $this->object->setAuthor(ilUtil::stripSlashes($_POST["author"]));
    $this->object->setDescription(ilUtil::stripSlashes($_POST["description"]));
                $this->object->setOrientation($_POST["orientation"]);
                if (strlen($_POST["material"]))
                {
                        $this->object->setMaterial($_POST["material"], 0, ilUtil::stripSlashes($_POST["material_title"]));
                }
                include_once "./classes/class.ilObjAdvancedEditing.php";
                $questiontext = ilUtil::stripSlashes($_POST["question"], true, ilObjAdvancedEditing::_getUsedHTMLTagsAsString("survey"));
                $this->object->setQuestiontext($questiontext);
                if ($_POST["obligatory"])
                {
                        $this->object->setObligatory(1);
                }
                else
                {
                        $this->object->setObligatory(0);
                }
                $this->object->setSubtype($_POST["subtype"]);
                $this->object->setRowSeparators(($_POST["row_separators"]) ? 1 : 0);
                $this->object->setColumnSeparators(($_POST["column_separators"]) ? 1 : 0);
                $this->object->setNeutralColumnSeparator(($_POST["neutral_column_separator"]) ? 1 : 0);

                if ($saved) 
                {
                        // If the question was saved automatically before an upload, we have to make
                        // sure, that the state after the upload is saved. Otherwise the user could be
                        // irritated, if he presses cancel, because he only has the question state before
                        // the upload process.
                        $this->object->saveToDb();
                }
    return $result;
  }

        function moveColumnUp($column)
        {
                $complete = $this->writeRowColData();
                $columntext = $this->object->getColumn($column);
                $this->object->removeColumn($column);
                $this->object->addColumnAtPosition($columntext, $column - 1);
                $_SESSION["spl_modified"] = TRUE;
        }

        function moveColumnDown($column)
        {
                $complete = $this->writeRowColData();
                $columntext = $this->object->getColumn($column);
                $this->object->removeColumn($column);
                $this->object->addColumnAtPosition($columntext, $column + 1);
                $_SESSION["spl_modified"] = TRUE;
        }
        
        function categories()
        {
                if (count($_POST) == 0) $_SESSION["spl_modified"] = FALSE;
                if (is_array($_POST))
                {
                        foreach ($_POST as $key => $value)
                        {
                                if (preg_match("/moveUp_(\d+)_x/", $key, $matches))
                                {
                                        $this->moveColumnUp($matches[1]);
                                }
                                if (preg_match("/moveDown_(\d+)_x/", $key, $matches))
                                {
                                        $this->moveColumnDown($matches[1]);
                                }
                        }
                }
                if ($this->object->getId() < 1) 
                {
                        ilUtil::sendInfo($this->lng->txt("fill_out_all_required_fields_add_category"), true);
                        $this->ctrl->redirect($this, "editQuestion");
                }
                $this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_svy_qpl_matrix_answers.html", "Modules/SurveyQuestionPool");
                
                // check for ordinal columns
                if ($this->object->getSubtype() == 0)
                {
                        $this->tpl->setCurrentBlock("ordinal");
                        $this->tpl->setVariable("TEXT_COLUMN_SETTINGS", $this->lng->txt("matrix_column_settings"));
                        $this->tpl->setVariable("TEXT_BIPOLAR_ADJECTIVES", $this->lng->txt("matrix_bipolar_adjectives"));
                        $this->tpl->setVariable("TEXT_BIPOLAR_ADJECTIVES_DESCRIPTION", $this->lng->txt("matrix_bipolar_adjectives_description"));
                        $this->tpl->setVariable("TEXT_ADJECTIVE_1", $this->lng->txt("matrix_adjective") . " 1");
                        $this->tpl->setVariable("TEXT_ADJECTIVE_2", $this->lng->txt("matrix_adjective") . " 2");
                        $this->tpl->setVariable("VALUE_BIPOLAR1", " value=\"" . ilUtil::prepareFormOutput($this->object->getBipolarAdjective(0)) . "\"");
                        $this->tpl->setVariable("VALUE_BIPOLAR2", " value=\"" . ilUtil::prepareFormOutput($this->object->getBipolarAdjective(1)) . "\"");
                        $this->tpl->setVariable("SAVE", $this->lng->txt("save"));
                        $this->tpl->parseCurrentBlock();
                }
                
                // create an empty column if nothing is defined
                if ($this->object->getColumnCount() == 0)
                {
                        $this->object->addColumn("");
                }
                if (strcmp($this->ctrl->getCmd(), "addColumn") == 0)
                {
                        $nrOfCategories = $_POST["nrOfCategories"];
                        if ($nrOfCategories < 1) $nrOfCategories = 1;
                        // Create template for a new column
                        for ($i = 1; $i <= $nrOfCategories; $i++)
                        {
                                $this->object->addColumn("");
                        }
                }
    // output of existing single response answers
                $hasneutralcolumn = FALSE;
                for ($i = 0; $i < $this->object->getColumnCount(); $i++) 
                {
                        $column = $this->object->getColumn($i);
                        if ($this->object->getColumnCount() > 1)
                        {
                                if ($i == 0)
                                {
                                        $this->tpl->setCurrentBlock("move_down");
                                        $this->tpl->setVariable("IMAGE_DOWN", ilUtil::getImagePath("a_down.gif"));
                                        $this->tpl->setVariable("ALT_DOWN", $this->lng->txt("move_down"));
                                        $this->tpl->setVariable("TITLE_DOWN", $this->lng->txt("move_down"));
                                        $this->tpl->setVariable("COLUMN", $i);
                                        $this->tpl->parseCurrentBlock();
                                }
                                else if ($i == $this->object->getColumnCount() - 1)
                                {
                                        $this->tpl->setCurrentBlock("move_up");
                                        $this->tpl->setVariable("IMAGE_UP", ilUtil::getImagePath("a_up.gif"));
                                        $this->tpl->setVariable("ALT_UP", $this->lng->txt("move_up"));
                                        $this->tpl->setVariable("TITLE_UP", $this->lng->txt("move_up"));
                                        $this->tpl->setVariable("COLUMN", $i);
                                        $this->tpl->parseCurrentBlock();
                                }
                                else
                                {
                                        $this->tpl->setCurrentBlock("move_down");
                                        $this->tpl->setVariable("IMAGE_DOWN", ilUtil::getImagePath("a_down.gif"));
                                        $this->tpl->setVariable("ALT_DOWN", $this->lng->txt("move_down"));
                                        $this->tpl->setVariable("TITLE_DOWN", $this->lng->txt("move_down"));
                                        $this->tpl->setVariable("COLUMN", $i);
                                        $this->tpl->parseCurrentBlock();
                                        $this->tpl->setCurrentBlock("move_up");
                                        $this->tpl->setVariable("IMAGE_UP", ilUtil::getImagePath("a_up.gif"));
                                        $this->tpl->setVariable("ALT_UP", $this->lng->txt("move_up"));
                                        $this->tpl->setVariable("TITLE_UP", $this->lng->txt("move_up"));
                                        $this->tpl->setVariable("COLUMN", $i);
                                        $this->tpl->parseCurrentBlock();
                                }
                        }
                        $this->tpl->setCurrentBlock("categories");
                        $this->tpl->setVariable("CATEGORY_ORDER", $i);
                        $this->tpl->setVariable("CATEGORY_ORDER", $i);
                        $this->tpl->setVariable("CATEGORY_NUMBER", $i+1);
                        $this->tpl->setVariable("VALUE_CATEGORY", $column);
                        $this->tpl->setVariable("TEXT_CATEGORY", $this->lng->txt("category"));
                        $this->tpl->parseCurrentBlock();
                }
                
                if (strlen($this->object->getNeutralColumn()))
                {
                        $this->tpl->setVariable("VALUE_NEUTRAL", " value=\"" . ilUtil::prepareFormOutput($this->object->getNeutralColumn()) . "\"");
                }
                $this->tpl->setVariable("CATEGORY_NEUTRAL", $this->object->getColumnCount() + 1);

                if ($this->object->getRowCount() == 0)
                {
                        $this->object->addRow("");
                }
                if (strcmp($this->ctrl->getCmd(), "addRow") == 0)
                {
                        $nrOfRows = $_POST["nrOfRows"];
                        if ($nrOfRows < 1) $nrOfRows = 1;
                        // Create template for a new column
                        for ($i = 1; $i <= $nrOfRows; $i++)
                        {
                                $this->object->addRow("");
                        }
                }
    // output of existing rows
                for ($i = 0; $i < $this->object->getRowCount(); $i++) 
                {
                        $this->tpl->setCurrentBlock("rows");
                        $this->tpl->setVariable("ROW_ORDER", $i);
                        $row = $this->object->getRow($i);
                        $this->tpl->setVariable("ROW_ORDER", $i);
                        $this->tpl->setVariable("ROW_NUMBER", $i+1);
                        $this->tpl->setVariable("VALUE_ROW", $row);
                        $this->tpl->setVariable("TEXT_ROW", $this->lng->txt("row"));
                        $this->tpl->parseCurrentBlock();
                }
                
                include_once "./Services/Utilities/classes/class.ilUtil.php";
                if ($this->object->getColumnCount() > 0)
                {
                        $this->tpl->setCurrentBlock("selectall");
                        $this->tpl->setVariable("SELECT_ALL", $this->lng->txt("select_all"));
                        $this->tpl->parseCurrentBlock();
                        $this->tpl->setCurrentBlock("existingcategories");
                        $this->tpl->setVariable("DELETE", $this->lng->txt("delete"));
                        $this->tpl->setVariable("VALUE_SAVE_PHRASE", $this->lng->txt("save_phrase"));
                        $this->tpl->setVariable("ARROW", "<img src=\"" . ilUtil::getImagePath("arrow_downright.gif") . "\" alt=\"".$this->lng->txt("arrow_downright")."\">");
                        $this->tpl->parseCurrentBlock();
                }

                if ($this->object->getRowCount() > 0)
                {
                        $this->tpl->setCurrentBlock("selectall_rows");
                        $this->tpl->setVariable("SELECT_ALL", $this->lng->txt("select_all"));
                        $this->tpl->parseCurrentBlock();
                }

                for ($i = 1; $i < 10; $i++)
                {
                        $this->tpl->setCurrentBlock("numbers");
                        $this->tpl->setVariable("VALUE_NUMBER", $i);
                        if ($i == 1)
                        {
                                $this->tpl->setVariable("TEXT_NUMBER", $i . " " . $this->lng->txt("category"));
                        }
                        else
                        {
                                $this->tpl->setVariable("TEXT_NUMBER", $i . " " . $this->lng->txt("categories"));
                        }
                        $this->tpl->parseCurrentBlock();
                        $this->tpl->setCurrentBlock("rownumbers");
                        $this->tpl->setVariable("VALUE_NUMBER", $i);
                        if ($i == 1)
                        {
                                $this->tpl->setVariable("TEXT_NUMBER", $i . " " . $this->lng->txt("row"));
                        }
                        else
                        {
                                $this->tpl->setVariable("TEXT_NUMBER", $i . " " . $this->lng->txt("rows"));
                        }
                        $this->tpl->parseCurrentBlock();
                }
                
                $this->tpl->setCurrentBlock("adm_content");
                $this->tpl->setVariable("FORMACTION", $this->ctrl->getFormAction($this, "categories"));
                $this->tpl->setVariable("TEXT_ANSWERS", $this->lng->txt("matrix_columns"));
                $this->tpl->setVariable("VALUE_ADD_CATEGORY", $this->lng->txt("add"));
                $this->tpl->setVariable("VALUE_ADD_PHRASE", $this->lng->txt("add_phrase"));
                $this->tpl->setVariable("TEXT_STANDARD_ANSWERS", $this->lng->txt("matrix_standard_answers"));
                $this->tpl->setVariable("TEXT_NEUTRAL_ANSWER", $this->lng->txt("matrix_neutral_answer"));
                if (!$hasneutralcolumn)
                {
                        $this->tpl->setVariable("CATEGORY_NEUTRAL", $this->object->getColumnCount()+1);
                }
                $this->tpl->setVariable("SAVE", $this->lng->txt("save"));
                
                $this->tpl->setVariable("TEXT_ROWS", $this->lng->txt("matrix_rows"));
                $this->tpl->setVariable("SAVEROWS", $this->lng->txt("save"));
                $this->tpl->setVariable("VALUE_ADD_ROW", $this->lng->txt("add"));
                $this->tpl->setVariable("DELETE", $this->lng->txt("delete"));
                $this->tpl->setVariable("ARROW", "<img src=\"" . ilUtil::getImagePath("arrow_downright.gif") . "\" alt=\"".$this->lng->txt("arrow_downright")."\">");
                
                if ($_SESSION["spl_modified"])
                {
                        $this->tpl->setVariable("FORM_DATA_MODIFIED_PRESS_SAVE", $this->lng->txt("form_data_modified_press_save"));
                }
                $questiontext = $this->object->getQuestiontext();
                $this->tpl->setVariable("QUESTION_TEXT", $this->object->prepareTextareaOutput($questiontext, TRUE));
                $this->tpl->parseCurrentBlock();
        }
        
        function setQuestionTabs()
        {
                global $rbacsystem,$ilTabs;
                $this->ctrl->setParameterByClass("$guiclass", "sel_question_types", $this->getQuestionType());
                $this->ctrl->setParameterByClass("$guiclass", "q_id", $_GET["q_id"]);

                if (($_GET["calling_survey"] > 0) || ($_GET["new_for_survey"] > 0))
                {
                        $ref_id = $_GET["calling_survey"];
                        if (!strlen($ref_id)) $ref_id = $_GET["new_for_survey"];
                        $addurl = "";
                        if (strlen($_GET["new_for_survey"]))
                        {
                                $addurl = "&new_id=" . $_GET["q_id"];
                        }
                        $ilTabs->setBackTarget($this->lng->txt("menubacktosurvey"), "ilias.php?baseClass=ilObjSurveyGUI&ref_id=$ref_id&cmd=questions" . $addurl);
                }
                else
                {
                        $ilTabs->setBackTarget($this->lng->txt("spl"), $this->ctrl->getLinkTargetByClass("ilObjSurveyQuestionPoolGUI", "questions"));
                }
                if ($_GET["q_id"])
                {
                        $ilTabs->addTarget("preview",
                                $this->ctrl->getLinkTarget($this, "preview"), 
                                array("preview"),
                                "",
                                "");
                                
                        $ilTabs->addTarget("layout",
                                $this->ctrl->getLinkTarget($this, "layout"), 
                                array("layout", "saveLayout"),
                                "",
                                "");
                }
                if ($rbacsystem->checkAccess('edit', $_GET["ref_id"])) 
                {
                        $ilTabs->addTarget("edit_properties",
                                $this->ctrl->getLinkTarget($this, "editQuestion"), 
                                array("editQuestion", "cancelExplorer", "linkChilds", "addGIT", "addST",
                                        "addPG", "editQuestion", "addMaterial", "removeMaterial", 
                                        "save", "cancel"),
                                "",
                                "");
                }

                if ($this->object->getId() > 0) 
                {
                        $ilTabs->addTarget("matrix_columns_rows",
                                $this->ctrl->getLinkTarget($this, "categories"), 
                                        array("categories", "addColumn", "addRow", "deleteRow", "moveColumn",
                                                "deleteColumn", "saveRowColEditor", "savePhrase", "addPhrase",
                                                "savePhrase", "addSelectedPhrase", "cancelViewPhrase", "confirmSavePhrase",
                                                "cancelSavePhrase", "confirmdeleteColumn", "canceldeleteColumn"),
                                "",
                                ""
                        );
                }
                
                if ($this->object->getId() > 0) 
                {
                        $title = $this->lng->txt("edit") . " &quot;" . $this->object->getTitle() . "&quot";
                } 
                else 
                {
                        $title = $this->lng->txt("create_new") . " " . $this->lng->txt($this->getQuestionType());
                }

                $this->tpl->setVariable("HEADER", $title);
        }

  function addPhrase() 
        {
                $complete = $this->writeRowColData(true);
                $this->ctrl->setParameterByClass(get_class($this), "q_id", $this->object->getId());
                $this->ctrl->setParameterByClass("ilobjsurveyquestionpoolgui", "q_id", $this->object->getId());

                $this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_svy_qpl_addphrase.html", "Modules/SurveyQuestionPool");

                // set the id to return to the selected question
                $this->tpl->setCurrentBlock("hidden");
                $this->tpl->setVariable("HIDDEN_NAME", "id");
                $this->tpl->setVariable("HIDDEN_VALUE", $this->object->getId());
                $this->tpl->parseCurrentBlock();

                include_once "./Modules/SurveyQuestionPool/classes/class.ilSurveyPhrases.php";
                $phrases =& ilSurveyPhrases::_getAvailablePhrases();
                $colors = array("tblrow1", "tblrow2");
                $counter = 0;
                foreach ($phrases as $phrase_id => $phrase_array)
                {
                        $this->tpl->setCurrentBlock("phraserow");
                        $this->tpl->setVariable("COLOR_CLASS", $colors[$counter++ % 2]);
                        $this->tpl->setVariable("PHRASE_VALUE", $phrase_id);
                        $this->tpl->setVariable("PHRASE_NAME", $phrase_array["title"]);
                        $columns =& ilSurveyPhrases::_getCategoriesForPhrase($phrase_id);
                        $this->tpl->setVariable("PHRASE_CONTENT", join($columns, ","));
                        $this->tpl->parseCurrentBlock();
                }
                
                $this->tpl->setCurrentBlock("adm_content");
                $this->tpl->setVariable("TEXT_CANCEL", $this->lng->txt("cancel"));
                $this->tpl->setVariable("TEXT_PHRASE", $this->lng->txt("phrase"));
                $this->tpl->setVariable("TEXT_CONTENT", $this->lng->txt("categories"));
                $this->tpl->setVariable("TEXT_ADD_PHRASE", $this->lng->txt("add_phrase"));
                $this->tpl->setVariable("TEXT_INTRODUCTION",$this->lng->txt("add_phrase_introduction"));
                $this->tpl->setVariable("FORM_ACTION", $this->ctrl->getFormAction($this, "addPhrase"));
                $this->tpl->parseCurrentBlock();
        }

        function cancelViewPhrase() 
        {
                $this->ctrl->redirect($this, "categories");
        }

        function addSelectedPhrase() 
        {
                if (strcmp($_POST["phrases"], "") == 0)
                {
                        ilUtil::sendInfo($this->lng->txt("select_phrase_to_add"));
                        $this->addPhrase();
                }
                else
                {
                        if (strcmp($this->object->getPhrase($_POST["phrases"]), "dp_standard_numbers") != 0)
                        {
                                $this->object->addPhrase($_POST["phrases"]);
                                $this->object->saveColumnsToDb();
                        }
                        else
                        {
                                $this->addStandardNumbers();
                                return;
                        }
                        $this->ctrl->redirect($this, "categories");
                }
        }
        
  function addStandardNumbers() 
        {
                $this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_svy_qpl_addphrase_standard_numbers.html", "Modules/SurveyQuestionPool");

                // set the id to return to the selected question
                $this->tpl->setCurrentBlock("hidden");
                $this->tpl->setVariable("HIDDEN_NAME", "id");
                $this->tpl->setVariable("HIDDEN_VALUE", $this->object->getId());
                $this->tpl->parseCurrentBlock();

                $this->tpl->setCurrentBlock("adm_content");
                $this->tpl->setVariable("ADD_STANDARD_NUMBERS", $this->lng->txt("add_standard_numbers"));
                $this->tpl->setVariable("TEXT_ADD_LIMITS", $this->lng->txt("add_limits_for_standard_numbers"));
                $this->tpl->setVariable("TEXT_LOWER_LIMIT",$this->lng->txt("lower_limit"));
                $this->tpl->setVariable("TEXT_UPPER_LIMIT",$this->lng->txt("upper_limit"));
                $this->tpl->setVariable("VALUE_LOWER_LIMIT", $_POST["lower_limit"]);
                $this->tpl->setVariable("VALUE_UPPER_LIMIT", $_POST["upper_limit"]);
                $this->tpl->setVariable("BTN_ADD",$this->lng->txt("add_phrase"));
                $this->tpl->setVariable("BTN_CANCEL",$this->lng->txt("cancel"));
                $this->tpl->setVariable("FORM_ACTION", $this->ctrl->getFormAction($this, "addStandardNumbers"));
                $this->tpl->parseCurrentBlock();
        }
        
        function cancelStandardNumbers() 
        {
                $this->ctrl->redirect($this, "categories");
        }

        function insertStandardNumbers() 
        {
                if ((strcmp($_POST["lower_limit"], "") == 0) or (strcmp($_POST["upper_limit"], "") == 0))
                {
                        ilUtil::sendInfo($this->lng->txt("missing_upper_or_lower_limit"));
                        $this->addStandardNumbers();
                }
                else if ((int)$_POST["upper_limit"] <= (int)$_POST["lower_limit"])
                {
                        ilUtil::sendInfo($this->lng->txt("upper_limit_must_be_greater"));
                        $this->addStandardNumbers();
                }
                else
                {
                        $this->object->addStandardNumbers($_POST["lower_limit"], $_POST["upper_limit"]);
                        $this->object->saveColumnsToDb();
                        $this->ctrl->redirect($this, "categories");
                }
        }

  function savePhrase() 
        {
                $complete = $this->writeRowColData(true);
                if (!$complete)
                {
                        $_SESSION["spl_modified"] = TRUE;
                        ilUtil::sendInfo($this->errormessage);
                        return $this->categories();
                }
                $nothing_selected = true;
                if (array_key_exists("chb_category", $_POST))
                {
                        if (count($_POST["chb_category"]))
                        {
                                $nothing_selected = false;
                                $this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_svy_qpl_savephrase.html", "Modules/SurveyQuestionPool");
                                $rowclass = array("tblrow1", "tblrow2");
                                $counter = 0;
                                foreach ($_POST["chb_category"] as $column)
                                {
                                        $this->tpl->setCurrentBlock("row");
                                        $this->tpl->setVariable("TXT_TITLE", $this->object->getColumn($column));
                                        $this->tpl->setVariable("COLOR_CLASS", $rowclass[$counter % 2]);
                                        $this->tpl->parseCurrentBlock();
                                        $this->tpl->setCurrentBlock("hidden");
                                        $this->tpl->setVariable("HIDDEN_NAME", "chb_category[]");
                                        $this->tpl->setVariable("HIDDEN_VALUE", $column["title"]);
                                        $this->tpl->parseCurrentBlock();
                                }
                        
                                $this->tpl->setCurrentBlock("adm_content");
                                $this->tpl->setVariable("SAVE_PHRASE_INTRODUCTION", $this->lng->txt("save_phrase_introduction"));
                                $this->tpl->setVariable("TEXT_PHRASE_TITLE", $this->lng->txt("enter_phrase_title"));
                                $this->tpl->setVariable("TXT_TITLE", $this->lng->txt("category"));
                                $this->tpl->setVariable("VALUE_PHRASE_TITLE", $_POST["phrase_title"]);
                                $this->tpl->setVariable("BTN_CANCEL",$this->lng->txt("cancel"));
                                $this->tpl->setVariable("BTN_CONFIRM",$this->lng->txt("confirm"));
                                $this->tpl->setVariable("FORM_ACTION", $this->ctrl->getFormAction($this, "savePhrase"));
                                $this->tpl->parseCurrentBlock();
                        }
                }
                if ($nothing_selected)
                {
                        ilUtil::sendInfo($this->lng->txt("check_category_to_save_phrase"), true);
                        $this->ctrl->redirect($this, "categories");
                }
        }

        function cancelSavePhrase() 
        {
                $this->ctrl->redirect($this, "categories");
        }

        function confirmSavePhrase() 
        {
                if (!$_POST["phrase_title"])
                {
                        ilUtil::sendInfo($this->lng->txt("qpl_savephrase_empty"));
                        $this->savePhrase();
                        return;
                }
                
                if ($this->object->phraseExists($_POST["phrase_title"]))
                {
                        ilUtil::sendInfo($this->lng->txt("qpl_savephrase_exists"));
                        $this->savePhrase();
                        return;
                }

                $this->object->savePhrase($_POST["chb_category"], $_POST["phrase_title"]);
                ilUtil::sendInfo($this->lng->txt("phrase_saved"), true);
                $this->ctrl->redirect($this, "categories");
        }

        function addColumn()
        {
                $result = $this->writeRowColData();
                if ($result == FALSE)
                {
                        ilUtil::sendInfo($this->errormessage);
                }
                $_SESSION["spl_modified"] = true;
                $this->categories();
        }


        function addRow()
        {
                $this->addColumn();
        }

        function writeRowColData($save = FALSE)
        {
    // Delete all existing columns and create new columns from the form data
    $this->object->flushColumns();
    $this->object->flushRows();
                $messages = array();
                $columnscomplete = TRUE;
                $rowscomplete = TRUE;
    // Add standard columns and rows
                include_once "./Services/Utilities/classes/class.ilUtil.php";
                $cats = "";
                $rows = "";
                foreach ($_POST as $key => $value) 
                {
                        if (preg_match("/^category_(\d+)/", $key, $matches)) 
                        {
                                $this->object->addColumn(ilUtil::stripSlashes($value));
                                $cats .= $value;
                        }
                        if (preg_match("/^row_(\d+)/", $key, $matches)) 
                        {
                                $this->object->addRow(ilUtil::stripSlashes($value));
                                $rows .= $value;
                        }
                }

                if (strlen($cats) == 0) 
                {
                        $columnscomplete = FALSE;
                        array_push($messages, $this->lng->txt("matrix_error_no_columns"));
                }
                if (strlen($rows) == 0) 
                {
                        $rowscomplete = FALSE;
                        array_push($messages, $this->lng->txt("matrix_error_no_rows"));
                }

    // Set neutral column
                $this->object->setNeutralColumn(ilUtil::stripSlashes($_POST["neutral"]));

                // Set bipolar adjectives
                $this->object->setBipolarAdjective(0, ilUtil::stripSlashes($_POST["bipolar1"]));
                $this->object->setBipolarAdjective(1, ilUtil::stripSlashes($_POST["bipolar2"]));

                if ($save)
                {       
                        $this->object->saveColumnsToDb();
                        $this->object->saveRowsToDb();
                        if (array_key_exists("bipolar1", $_POST))
                        {
                                $this->object->saveBipolarAdjectives(ilUtil::stripSlashes($_POST["bipolar1"]), ilUtil::stripSlashes($_POST["bipolar2"]));
                        }
                }

                if (count($messages))
                {
                        $this->errormessage = implode("<br />", $messages);
                }
                return $columnscomplete && $rowscomplete;
        }

        function saveRowColEditor()
        {
                global $ilUser;
                
                $complete = $this->writeRowColData(true);
                if (!$complete)
                {
                        $_SESSION["spl_modified"] = TRUE;
                        ilUtil::sendInfo($this->errormessage);
                        $this->categories();
                }
                else
                {
                        $_SESSION["spl_modified"] = FALSE;
                        ilUtil::sendInfo($this->lng->txt("saved_successfully"), true);
                        $originalexists = $this->object->_questionExists($this->object->original_id);
                        $this->ctrl->setParameter($this, "q_id", $this->object->getId());
                        include_once "./Modules/SurveyQuestionPool/classes/class.SurveyQuestion.php";
                        if ($_GET["calling_survey"] && $originalexists && SurveyQuestion::_isWriteable($this->object->original_id, $ilUser->getId()))
                        {
                                $this->originalSyncForm();
                                return;
                        }
                        else
                        {
                                $this->ctrl->redirect($this, "categories");
                        }
                }
        }

        function deleteColumn()
        {
                $this->writeRowColData();
                $nothing_selected = true;
                if (array_key_exists("chb_category", $_POST))
                {
                        if (count($_POST["chb_category"]))
                        {
                                $nothing_selected = false;
                                $this->object->removeColumns($_POST["chb_category"]);
                        }
                }
                if ($nothing_selected) 
                {
                        ilUtil::sendInfo($this->lng->txt("matrix_column_delete_select_none"));
                }
                else
                {
                        $_SESSION["spl_modified"] = true;
                }
                $this->categories();
        }

        function deleteRow()
        {
                $this->writeRowColData();
                $nothing_selected = true;
                if (array_key_exists("chb_row", $_POST))
                {
                        if (count($_POST["chb_row"]))
                        {
                                $nothing_selected = false;
                                $this->object->removeRows($_POST["chb_row"]);
                        }
                }
                if ($nothing_selected) 
                {
                        ilUtil::sendInfo($this->lng->txt("matrix_row_delete_select_none"));
                }
                else
                {
                        $_SESSION["spl_modified"] = true;
                }
                $this->categories();
        }
        
        function getCumulatedResultRow($counter, $css_class, $survey_id)
        {
                $output = "";
                include_once "./classes/class.ilTemplate.php";
                if (count($this->cumulated) == 0)
                {
                        include_once "./Modules/Survey/classes/class.ilObjSurvey.php";
                        $nr_of_users = ilObjSurvey::_getNrOfParticipants($survey_id);
                        $this->cumulated =& $this->object->getCumulatedResults($survey_id, $nr_of_users);
                }
                $template = new ilTemplate("tpl.il_svy_svy_cumulated_results_row.html", TRUE, TRUE, "Modules/Survey");
                $template->setVariable("QUESTION_TITLE", ($counter+1) . ". ".$this->object->getTitle());
                $maxlen = 37;
                $questiontext = preg_replace("/<[^>]+?>/ims", "", $this->object->getQuestiontext());
                if (strlen($questiontext) > $maxlen + 3)
                {
                        $questiontext = substr($questiontext, 0, $maxlen) . "...";
                }
                $template->setVariable("QUESTION_TEXT", $questiontext);
                $template->setVariable("USERS_ANSWERED", $this->cumulated["TOTAL"]["USERS_ANSWERED"]);
                $template->setVariable("USERS_SKIPPED", $this->cumulated["TOTAL"]["USERS_SKIPPED"]);
                $template->setVariable("QUESTION_TYPE", $this->lng->txt($this->cumulated["TOTAL"]["QUESTION_TYPE"]));
                $template->setVariable("MODE", $this->cumulated["TOTAL"]["MODE"]);
                $template->setVariable("MODE_NR_OF_SELECTIONS", $this->cumulated["TOTAL"]["MODE_NR_OF_SELECTIONS"]);
                $template->setVariable("MEDIAN", $this->cumulated["TOTAL"]["MEDIAN"]);
                $template->setVariable("ARITHMETIC_MEAN", $this->cumulated["TOTAL"]["ARITHMETIC_MEAN"]);
                $template->setVariable("COLOR_CLASS", $css_class);
                $output = $template->get();
                foreach ($this->cumulated as $key => $value)
                {
                        if (is_numeric($key))
                        {
                                $template = new ilTemplate("tpl.il_svy_svy_cumulated_results_row_matrix.html", TRUE, TRUE, "Modules/Survey");
                                $template->setVariable("QUESTION_TITLE", "");
                                $template->setVariable("ROW", ($key+1) . ". " . $value["ROW"]);
                                $template->setVariable("USERS_ANSWERED", $value["USERS_ANSWERED"]);
                                $template->setVariable("USERS_SKIPPED", $value["USERS_SKIPPED"]);
                                $template->setVariable("MODE", $value["MODE"]);
                                $template->setVariable("MODE_NR_OF_SELECTIONS", $value["MODE_NR_OF_SELECTIONS"]);
                                $template->setVariable("MEDIAN", $value["MEDIAN"]);
                                $template->setVariable("ARITHMETIC_MEAN", $value["ARITHMETIC_MEAN"]);
                                $template->setVariable("COLOR_CLASS", $css_class);
                                $output .= $template->get();
                        }
                }
                return $output;
        }

        function getCumulatedResultsDetails($survey_id, $counter)
        {
                if (count($this->cumulated) == 0)
                {
                        include_once "./Modules/Survey/classes/class.ilObjSurvey.php";
                        $nr_of_users = ilObjSurvey::_getNrOfParticipants($survey_id);
                        $this->cumulated =& $this->object->getCumulatedResults($survey_id, $nr_of_users);
                }
                
                $output = "";
                include_once "./classes/class.ilTemplate.php";
                $template = new ilTemplate("tpl.il_svy_svy_cumulated_results_detail.html", TRUE, TRUE, "Modules/Survey");
                
                $template->setCurrentBlock("detail_row");
                $template->setVariable("TEXT_OPTION", $this->lng->txt("question"));
                $questiontext = $this->object->getQuestiontext();
                $template->setVariable("TEXT_OPTION_VALUE", $this->object->prepareTextareaOutput($questiontext, TRUE));
                $template->parseCurrentBlock();
                $template->setCurrentBlock("detail_row");
                $template->setVariable("TEXT_OPTION", $this->lng->txt("question_type"));
                $template->setVariable("TEXT_OPTION_VALUE", $this->lng->txt($this->getQuestionType()));
                $template->parseCurrentBlock();
                $template->setCurrentBlock("detail_row");
                $template->setVariable("TEXT_OPTION", $this->lng->txt("users_answered"));
                $template->setVariable("TEXT_OPTION_VALUE", $this->cumulated["TOTAL"]["USERS_ANSWERED"]);
                $template->parseCurrentBlock();
                $template->setCurrentBlock("detail_row");
                $template->setVariable("TEXT_OPTION", $this->lng->txt("users_skipped"));
                $template->setVariable("TEXT_OPTION_VALUE", $this->cumulated["TOTAL"]["USERS_SKIPPED"]);
                $template->parseCurrentBlock();
                
                $template->setCurrentBlock("detail_row");
                $template->setVariable("TEXT_OPTION", $this->lng->txt("mode"));
                $template->setVariable("TEXT_OPTION_VALUE", $this->cumulated["TOTAL"]["MODE"]);
                $template->parseCurrentBlock();
                $template->setCurrentBlock("detail_row");
                $template->setVariable("TEXT_OPTION", $this->lng->txt("mode_nr_of_selections"));
                $template->setVariable("TEXT_OPTION_VALUE", $this->cumulated["TOTAL"]["MODE_NR_OF_SELECTIONS"]);
                $template->parseCurrentBlock();
                $template->setCurrentBlock("detail_row");
                $template->setVariable("TEXT_OPTION", $this->lng->txt("median"));
                $template->setVariable("TEXT_OPTION_VALUE", $this->cumulated["TOTAL"]["MEDIAN"]);
                $template->parseCurrentBlock();
                
                $template->setCurrentBlock("detail_row");
                $template->setVariable("TEXT_OPTION", $this->lng->txt("categories"));
                $columns = "";
                foreach ($this->cumulated["TOTAL"]["variables"] as $key => $value)
                {
                        $columns .= "<li>" . $this->lng->txt("title") . ":" . "<span class=\"bold\">" . $value["title"] . "</span><br />" .
                                $this->lng->txt("category_nr_selected") . ": " . "<span class=\"bold\">" . $value["selected"] . "</span><br />" .
                                $this->lng->txt("percentage_of_selections") . ": " . "<span class=\"bold\">" . sprintf("%.2f", 100*$value["percentage"]) . "</span></li>";
                }
                $columns = "<ol>$columns</ol>";
                $template->setVariable("TEXT_OPTION_VALUE", $columns);
                $template->parseCurrentBlock();
                
                foreach ($this->cumulated as $key => $value)
                {
                        if (is_numeric($key))
                        {
                                $template->setCurrentBlock("detail_row");
                                $template->setVariable("TEXT_OPTION", $this->lng->txt("row"));
                                $questiontext = $value["ROW"];
                                $template->setVariable("TEXT_OPTION_VALUE", $this->object->prepareTextareaOutput($questiontext, TRUE));
                                $template->parseCurrentBlock();
                                $template->setCurrentBlock("detail_row");
                                $template->setVariable("TEXT_OPTION", $this->lng->txt("users_answered"));
                                $template->setVariable("TEXT_OPTION_VALUE", $value["USERS_ANSWERED"]);
                                $template->parseCurrentBlock();
                                $template->setCurrentBlock("detail_row");
                                $template->setVariable("TEXT_OPTION", $this->lng->txt("users_skipped"));
                                $template->setVariable("TEXT_OPTION_VALUE", $value["USERS_SKIPPED"]);
                                $template->parseCurrentBlock();
                                
                                $template->setCurrentBlock("detail_row");
                                $template->setVariable("TEXT_OPTION", $this->lng->txt("mode"));
                                $template->setVariable("TEXT_OPTION_VALUE", $value["MODE"]);
                                $template->parseCurrentBlock();
                                $template->setCurrentBlock("detail_row");
                                $template->setVariable("TEXT_OPTION", $this->lng->txt("mode_nr_of_selections"));
                                $template->setVariable("TEXT_OPTION_VALUE", $value["MODE_NR_OF_SELECTIONS"]);
                                $template->parseCurrentBlock();
                                $template->setCurrentBlock("detail_row");
                                $template->setVariable("TEXT_OPTION", $this->lng->txt("median"));
                                $template->setVariable("TEXT_OPTION_VALUE", $value["MEDIAN"]);
                                $template->parseCurrentBlock();
                                
                                $template->setCurrentBlock("detail_row");
                                $template->setVariable("TEXT_OPTION", $this->lng->txt("categories"));
                                $columns = "";
                                foreach ($value["variables"] as $key => $value)
                                {
                                        $columns .= "<li>" . $this->lng->txt("title") . ":" . "<span class=\"bold\">" . $value["title"] . "</span><br />" .
                                                $this->lng->txt("category_nr_selected") . ": " . "<span class=\"bold\">" . $value["selected"] . "</span><br />" .
                                                $this->lng->txt("percentage_of_selections") . ": " . "<span class=\"bold\">" . sprintf("%.2f", 100*$value["percentage"]) . "</span></li>";
                                }
                                $columns = "<ol>$columns</ol>";
                                $template->setVariable("TEXT_OPTION_VALUE", $columns);
                                $template->parseCurrentBlock();
                        }
                }
                
                // display chart for matrix question for array $eval["variables"]
                foreach ($this->cumulated as $key => $value)
                {
                        if (is_numeric($key))
                        {
                                $template->setCurrentBlock("chartimage");
                                $template->setVariable("ALT_CHART", $this->lng->txt("chart"));
                                $this->ctrl->setParameterByClass("ilsurveyevaluationgui", "type", $key);
                                $this->ctrl->setParameterByClass("ilsurveyevaluationgui", "survey", $survey_id);
                                $this->ctrl->setParameterByClass("ilsurveyevaluationgui", "question", $this->object->getId());
                                $template->setVariable("CHART", $this->ctrl->getLinkTargetByClass("ilsurveyevaluationgui", "outChart"));
                                $template->parseCurrentBlock();
                        }
                }
                $template->setCurrentBlock("chart");
                $template->setVariable("TEXT_CHART", $this->lng->txt("chart"));
                $template->parseCurrentBlock();

                $template->setVariable("QUESTION_TITLE", "$counter. ".$this->object->getTitle());
                $output = $template->get();
                return $output;
        }

}
?>