assessment/classes/class.assQuestionGUI.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 "./assessment/classes/inc.AssessmentConstants.php";

class assQuestionGUI
{
        var $object;

        var $tpl;
        var $lng;
        var $error;
        var $errormessage;
        
        var $sequence_no;
        var $question_count;
        
        function assQuestionGUI()
        {
                global $lng, $tpl, $ilCtrl;


                $this->lng =& $lng;
                $this->tpl =& $tpl;
                $this->ctrl =& $ilCtrl;
                $this->ctrl->saveParameter($this, "q_id");

                include_once "./assessment/classes/class.assQuestion.php";
                $this->errormessage = $this->lng->txt("fill_out_all_required_fields");
                $this->object = new assQuestion();
        }

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

                $cmd = $this->getCommand($cmd);

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

        function getCommand($cmd)
        {
                return $cmd;
        }


        function getQuestionType()
        {
                return "";
        }

        function getType()
        {
                return $this->getQuestionType();
        }

        function outOtherQuestionData()
        {
                $est_working_time = $this->object->getEstimatedWorkingTime();
                $this->tpl->setVariable("TEXT_WORKING_TIME", $this->lng->txt("working_time"));
                $this->tpl->setVariable("TIME_FORMAT", $this->lng->txt("time_format"));
                $this->tpl->setVariable("VALUE_WORKING_TIME", ilUtil::makeTimeSelect("Estimated", false, $est_working_time[h], $est_working_time[m], $est_working_time[s]));
        }

        function writePostData()
        {
        }

        function assessment()
        {
                $this->tpl->addBlockFile("CONTENT", "content", "tpl.il_as_qpl_content.html", true);
                $this->tpl->addBlockFile("STATUSLINE", "statusline", "tpl.statusline.html");

                // catch feedback message
                sendInfo();

                $total_of_answers = $this->object->getTotalAnswers();
                $counter = 0;
                $color_class = array("tblrow1", "tblrow2");
                $this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_as_qpl_assessment_of_questions.html", true);

                if (!$total_of_answers)
                {
                        $this->tpl->setCurrentBlock("emptyrow");
                        $this->tpl->setVariable("TXT_NO_ASSESSMENT", $this->lng->txt("qpl_assessment_no_assessment_of_questions"));
                        $this->tpl->setVariable("COLOR_CLASS", $color_class[$counter % 2]);
                        $this->tpl->parseCurrentBlock();
                }
                else
                {
                        $this->tpl->setCurrentBlock("row");
                        $this->tpl->setVariable("TXT_RESULT", $this->lng->txt("qpl_assessment_total_of_answers"));
                        $this->tpl->setVariable("TXT_VALUE", $total_of_answers);
                        $this->tpl->setVariable("COLOR_CLASS", $color_class[$counter % 2]);
                        $counter++;
                        $this->tpl->parseCurrentBlock();
                        $this->tpl->setCurrentBlock("row");
                        $this->tpl->setVariable("TXT_RESULT", $this->lng->txt("qpl_assessment_total_of_right_answers"));
                        $this->tpl->setVariable("TXT_VALUE", sprintf("%2.2f", $this->object->_getTotalRightAnswers($_GET["q_id"]) * 100.0) . " %");
                        $this->tpl->setVariable("COLOR_CLASS", $color_class[$counter % 2]);
                        $this->tpl->parseCurrentBlock();
                }

                $instances =& $this->object->getInstances();
                $counter = 0;
                foreach ($instances as $instance)
                {
                        if (is_array($instance["refs"]))
                        {
                                foreach ($instance["refs"] as $ref_id)
                                {
                                        $this->tpl->setCurrentBlock("references");
                                        $this->tpl->setVariable("GOTO", "./goto.php?target=tst_" . $ref_id);
                                        $this->tpl->setVariable("TEXT_GOTO", $this->lng->txt("perma_link"));
                                        $this->tpl->parseCurrentBlock();
                                }
                        }
                        $this->tpl->setCurrentBlock("instance_row");
                        $this->tpl->setVariable("TEST_TITLE", $instance["title"]);
                        $this->tpl->setVariable("TEST_AUTHOR", $instance["author"]);
                        $this->tpl->setVariable("QUESTION_ID", $instance["question_id"]);
                        $this->tpl->setVariable("COLOR_CLASS", $color_class[$counter % 2]);
                        $counter++;
                        $this->tpl->parseCurrentBlock();
                }
                $this->tpl->setCurrentBlock("instances");
                $this->tpl->setVariable("TEXT_TEST_TITLE", $this->lng->txt("title"));
                $this->tpl->setVariable("TEXT_TEST_AUTHOR", $this->lng->txt("author"));
                $this->tpl->setVariable("TEXT_TEST_LOCATION", $this->lng->txt("location"));
                $this->tpl->setVariable("INSTANCES_TITLE", $this->lng->txt("question_instances_title"));
                $this->tpl->parseCurrentBlock();

                $this->tpl->setCurrentBlock("adm_content");
                $this->tpl->setVariable("TXT_QUESTION_TITLE", $this->lng->txt("question_cumulated_statistics"));
                $this->tpl->setVariable("TXT_RESULT", $this->lng->txt("result"));
                $this->tpl->setVariable("TXT_VALUE", $this->lng->txt("value"));
                $this->tpl->parseCurrentBlock();
        }

        function writeOtherPostData($result = 0)
        {
                $this->object->setEstimatedWorkingTime(
                        ilUtil::stripSlashes($_POST["Estimated"][h]),
                        ilUtil::stripSlashes($_POST["Estimated"][m]),
                        ilUtil::stripSlashes($_POST["Estimated"][s])
                );

                $saved = false;
                return $saved;
        }

        function &_getQuestionGUI($question_type, $question_id = -1)
        {
                include_once "./assessment/classes/class.assQuestion.php";
                if ((!$question_type) and ($question_id > 0))
                {
                        $question_type = assQuestion::getQuestionTypeFromDb($question_id);
// echo ":".$question_type;
                }
                if (strlen($question_type) == 0) return NULL;
                include_once "./assessment/classes/class.".$question_type."GUI.php";
                $question_type_gui = $question_type . "GUI";
                $question =& new $question_type_gui();
                if ($question_id > 0)
                {
                        $question->object->loadFromDb($question_id);
                }
                return $question;
        }

        function _getGUIClassNameForId($a_q_id)
        {
                include_once "./assessment/classes/class.assQuestion.php";
                include_once "./assessment/classes/class.assQuestionGUI.php";
                $q_type =  assQuestion::getQuestionTypeFromDb($a_q_id);
                $class_name = assQuestionGUI::_getClassNameForQType($q_type);
                return $class_name;
        }

        function _getClassNameForQType($q_type)
        {
                return $q_type . "GUI";
        }

        function &createQuestionGUI($question_type, $question_id = -1)
        {
                include_once "./assessment/classes/class.assQuestionGUI.php";
                $this->question =& assQuestionGUI::_getQuestionGUI($question_type, $question_id);
        }

        function getQuestionTemplate()
        {
                $this->tpl->addBlockFile("CONTENT", "content", "tpl.il_as_qpl_content.html", true);
                $this->tpl->addBlockFile("STATUSLINE", "statusline", "tpl.statusline.html");
                $this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_as_question.html", true);
        }

        function getILIASPage()
        {
                include_once("content/classes/Pages/class.ilPageObject.php");
                include_once("content/classes/Pages/class.ilPageObjectGUI.php");
                $page =& new ilPageObject("qpl", $this->object->getId());
                $page_gui =& new ilPageObjectGUI($page);
                $page_gui->setTemplateTargetVar($a_temp_var);
                $page_gui->setFileDownloadLink("ilias.php?baseClass=ilObjTestGUI&cmd=downloadFile".
                        "&amp;ref_id=".$_GET["ref_id"]);
                $page_gui->setFullscreenLink("ilias.php?baseClass=ilObjTestGUI&cmd=fullscreen".
                        "&amp;ref_id=".$_GET["ref_id"]);
                $page_gui->setSourcecodeDownloadScript("ilias.php?baseClass=ilObjTestGUI&ref_id=".$_GET["ref_id"]);
                $page_gui->setOutputMode("presentation");
                $page_gui->setPresentationTitle("");
                return $page_gui->presentation();
        }

        function outQuestionPage($a_temp_var, $a_postponed = false, $active_id = "")
        {
                $postponed = "";
                if ($a_postponed)
                {
                        $postponed = " (" . $this->lng->txt("postponed") . ")";
                }

                include_once("content/classes/Pages/class.ilPageObject.php");
                include_once("content/classes/Pages/class.ilPageObjectGUI.php");
                $this->lng->loadLanguageModule("content");
                $page =& new ilPageObject("qpl", $this->object->getId());
                $page_gui =& new ilPageObjectGUI($page);
                $page_gui->setTemplateTargetVar($a_temp_var);
                $page_gui->setFileDownloadLink("ilias.php?baseClass=ilObjTestGUI&cmd=downloadFile".
                        "&amp;ref_id=".$_GET["ref_id"]);
                $page_gui->setFullscreenLink("ilias.php?baseClass=ilObjTestGUI&cmd=fullscreen".
                        "&amp;ref_id=".$_GET["ref_id"]);
                $page_gui->setSourcecodeDownloadScript("ilias.php?baseClass=ilObjTestGUI&ref_id=".$_GET["ref_id"]);
                $page_gui->setOutputMode("presentation");
                include_once "./assessment/classes/class.ilObjTest.php";

                $maxpoints = "";
                if (!ilObjTest::_getHideTitlePoints($active_id))
                {
                        $maxpoints = $this->object->getMaximumPoints();
                        if ($maxpoints == 1)
                        {
                                $maxpoints = " (".$maxpoints." ".$this->lng->txt("point").")";
                        }
                        else
                        {
                                $maxpoints = " (".$maxpoints." ".$this->lng->txt("points").")";
                        }
                }
                $page_gui->setPresentationTitle(sprintf($this->lng->txt("tst_position"), $this->getSequenceNumber(), $this->getQuestionCount())." - ".$this->object->getTitle().$postponed.$maxpoints);
                $presentation = $page_gui->presentation();
                if (strlen($maxpoints)) $presentation = str_replace($maxpoints, "<em>$maxpoints</em>", $presentation);
                return $presentation;
        }
        
        function cancel()
        {
                if ($_GET["calling_test"])
                {
                        $_GET["ref_id"] = $_GET["calling_test"];
                        ilUtil::redirect("ilias.php?baseClass=ilObjTestGUI&cmd=questions&ref_id=".$_GET["calling_test"]);
                }
                elseif ($_GET["test_ref_id"])
                {
                        $_GET["ref_id"] = $_GET["test_ref_id"];
                        ilUtil::redirect("ilias.php?baseClass=ilObjTestGUI&cmd=questions&ref_id=".$_GET["test_ref_id"]);
                }
                else
                {
                        if ($_GET["q_id"] > 0)
                        {
                                $this->ctrl->setParameterByClass("ilpageobjectgui", "q_id", $_GET["q_id"]);
                                $this->ctrl->redirectByClass("ilpageobjectgui", "view");
                        }
                        else
                        {
                                $this->ctrl->redirectByClass("ilobjquestionpoolgui", "questions");
                        }
                }
        }

        function originalSyncForm()
        {
                $this->tpl->addBlockFile("ADM_CONTENT", "adm_content", "tpl.il_tst_sync_original.html", true);
                $this->tpl->setCurrentBlock("adm_content");
                $this->tpl->setVariable("BUTTON_YES", $this->lng->txt("yes"));
                $this->tpl->setVariable("BUTTON_NO", $this->lng->txt("no"));
                $this->tpl->setVariable("FORM_ACTION", $this->ctrl->getFormAction($this));
                $this->tpl->setVariable("TEXT_SYNC", $this->lng->txt("confirm_sync_questions"));
                $this->tpl->parseCurrentBlock();
        }
        
        function sync()
        {
                $original_id = $this->object->original_id;
                if ($original_id)
                {
                        $this->object->syncWithOriginal();
                }
                $_GET["ref_id"] = $_GET["calling_test"];
                ilUtil::redirect("ilias.php?baseClass=ilObjTestGUI&cmd=questions&ref_id=".$_GET["calling_test"]);
        }

        function cancelSync()
        {
                $_GET["ref_id"] = $_GET["calling_test"];
                ilUtil::redirect("ilias.php?baseClass=ilObjTestGUI&cmd=questions&ref_id=".$_GET["calling_test"]);
        }
                
        function saveEdit()
        {
                global $ilUser;

                $result = $this->writePostData();
                if ($result == 0)
                {
                        $ilUser->setPref("tst_lastquestiontype", $this->object->getQuestionType());
                        $ilUser->writePref("tst_lastquestiontype", $this->object->getQuestionType());
                        $this->object->saveToDb();
                        $originalexists = $this->object->_questionExists($this->object->original_id);
                        include_once "./assessment/classes/class.assQuestion.php";
                        if ($_GET["calling_test"] && $originalexists && assQuestion::_isWriteable($this->object->original_id, $ilUser->getId()))
                        {
                                $this->originalSyncForm();
                        }
                        elseif ($_GET["calling_test"])
                        {
                                $_GET["ref_id"] = $_GET["calling_test"];
                                ilUtil::redirect("ilias.php?baseClass=ilObjTestGUI&cmd=questions&ref_id=".$_GET["calling_test"]);
                                return;
                        }
                        elseif ($_GET["test_ref_id"])
                        {
                                include_once ("./assessment/classes/class.ilObjTest.php");
                                $_GET["ref_id"] = $_GET["test_ref_id"];
                                $test =& new ilObjTest($_GET["test_ref_id"], true);
                                $test->insertQuestion($this->object->getId());
                                ilUtil::redirect("ilias.php?baseClass=ilObjTestGUI&cmd=questions&ref_id=".$_GET["test_ref_id"]);
                        }
                        else
                        {
                                $_GET["q_id"] = $this->object->getId();
                                $this->editQuestion();
                                if (strcmp($_SESSION["info"], "") != 0)
                                {
                                        sendInfo($_SESSION["info"] . "<br />" . $this->lng->txt("msg_obj_modified"), false);
                                }
                                else
                                {
                                        sendInfo($this->lng->txt("msg_obj_modified"), false);
                                }
                                $this->ctrl->setParameterByClass("ilpageobjectgui", "q_id", $this->object->getId());
                                $this->ctrl->redirectByClass("ilpageobjectgui", "view");
                        }
                }
                else
                {
      sendInfo($this->lng->txt("fill_out_all_required_fields"));
                        $this->editQuestion();
                }
        }

        function save()
        {
                global $ilUser;
                
                $old_id = $_GET["q_id"];
                $result = $this->writePostData();
                if ($result == 0)
                {
                        $ilUser->setPref("tst_lastquestiontype", $this->object->getQuestionType());
                        $ilUser->writePref("tst_lastquestiontype", $this->object->getQuestionType());
                        $this->object->saveToDb();
                        $originalexists = $this->object->_questionExists($this->object->original_id);
                        include_once "./assessment/classes/class.assQuestion.php";
                        if ($_GET["calling_test"] && $originalexists && assQuestion::_isWriteable($this->object->original_id, $ilUser->getId()))
                        {
                                $this->originalSyncForm();
                        }
                        elseif ($_GET["calling_test"])
                        {
                                $_GET["ref_id"] = $_GET["calling_test"];
                                ilUtil::redirect("ilias.php?baseClass=ilObjTestGUI&cmd=questions&ref_id=".$_GET["calling_test"]);
                                return;
                        }
                        elseif ($_GET["test_ref_id"])
                        {
                                include_once ("./assessment/classes/class.ilObjTest.php");
                                $_GET["ref_id"] = $_GET["test_ref_id"];
                                $test =& new ilObjTest($_GET["test_ref_id"], true);
                                $test->insertQuestion($this->object->getId());
                                ilUtil::redirect("ilias.php?baseClass=ilObjTestGUI&cmd=questions&ref_id=".$_GET["test_ref_id"]);
                        }
                        else
                        {
                                $_GET["q_id"] = $this->object->getId();
                                if ($_GET["q_id"] !=  $old_id)
                                {
                                        // first save
                                        $this->ctrl->setParameterByClass($_GET["cmdClass"], "q_id", $this->object->getId());
                                        $this->ctrl->setParameterByClass($_GET["cmdClass"], "sel_question_types", $_GET["sel_question_types"]);
                                        sendInfo($this->lng->txt("msg_obj_modified"), true);
                                        $this->ctrl->redirectByClass($_GET["cmdClass"], "editQuestion");
                                }
                                if (strcmp($_SESSION["info"], "") != 0)
                                {
                                        sendInfo($_SESSION["info"] . "<br />" . $this->lng->txt("msg_obj_modified"), false);
                                }
                                else
                                {
                                        sendInfo($this->lng->txt("msg_obj_modified"), false);
                                }
                                $this->editQuestion();
        //                      $this->ctrl->setParameterByClass("ilpageobjectgui", "q_id", $this->object->getId());
        //                      $this->ctrl->redirectByClass("ilpageobjectgui", "view");
                        }
                }
                else
                {
      sendInfo($this->getErrorMessage());
                        $this->editQuestion();
                }
        }

        function apply()
        {
                $this->writePostData();
                $this->object->saveToDb();
                $_GET["q_id"] = $this->object->getId();
                $this->editQuestion();
        }
        
        function cancelExplorer()
        {
                unset($_SESSION["subquestion_index"]);
                unset($_SESSION["link_new_type"]);
                $this->editQuestion();
        }
        
        function addSuggestedSolution()
        {
                global $tree;

                include_once("./assessment/classes/class.ilSolutionExplorer.php");
                switch ($_POST["internalLinkType"])
                {
                        case "lm":
                                $_SESSION["link_new_type"] = "lm";
                                $_SESSION["search_link_type"] = "lm";
                                break;
                        case "glo":
                                $_SESSION["link_new_type"] = "glo";
                                $_SESSION["search_link_type"] = "glo";
                                break;
                        case "st":
                                $_SESSION["link_new_type"] = "lm";
                                $_SESSION["search_link_type"] = "st";
                                break;
                        case "pg":
                                $_SESSION["link_new_type"] = "lm";
                                $_SESSION["search_link_type"] = "pg";
                                break;
                        default:
                                if (!$_SESSION["link_new_type"])
                                {
                                        $_SESSION["link_new_type"] = "lm";
                                }
                                break;
                }

                sendInfo($this->lng->txt("select_object_to_link"));
                
                $exp = new ilSolutionExplorer($this->ctrl->getLinkTarget($this,'addSuggestedSolution'), get_class($this));

                $exp->setExpand($_GET["expand"] ? $_GET["expand"] : $tree->readRootId());
                $exp->setExpandTarget($this->ctrl->getLinkTarget($this,'addSuggestedSolution'));
                $exp->setTargetGet("ref_id");
                $exp->setRefId($this->cur_ref_id);
                $exp->addFilter($_SESSION["link_new_type"]);
                $exp->setSelectableType($_SESSION["link_new_type"]);

                // build html-output
                $exp->setOutput(0);

                $this->tpl->addBlockFile("EXPLORER", "explorer", "tpl.il_as_qpl_explorer.html", true);
                $this->tpl->setVariable("EXPLORER_TREE",$exp->getOutput());
                $this->tpl->setVariable("BUTTON_CANCEL",$this->lng->txt("cancel"));
                $this->tpl->setVariable("FORMACTION",$this->ctrl->getFormAction($this));
                $this->tpl->parseCurrentBlock();
        }
        
        function removeSuggestedSolution()
        {
                $this->object->suggested_solutions = array();
                $this->object->saveToDb();
                $this->editQuestion();
        }
        
        function addPG()
        {
                $subquestion_index = 0;
                if ($_SESSION["subquestion_index"] >= 0)
                {
                        $subquestion_index = $_SESSION["subquestion_index"];
                }
                $this->object->setSuggestedSolution("il__pg_" . $_GET["pg"], $subquestion_index);
                unset($_SESSION["subquestion_index"]);
                unset($_SESSION["link_new_type"]);
                unset($_SESSION["search_link_type"]);
                sendInfo($this->lng->txt("suggested_solution_added_successfully"));
                $this->editQuestion();
        }
        
        function addST()
        {
                $subquestion_index = 0;
                if ($_SESSION["subquestion_index"] >= 0)
                {
                        $subquestion_index = $_SESSION["subquestion_index"];
                }
                $this->object->setSuggestedSolution("il__st_" . $_GET["st"], $subquestion_index);
                unset($_SESSION["subquestion_index"]);
                unset($_SESSION["link_new_type"]);
                unset($_SESSION["search_link_type"]);
                sendInfo($this->lng->txt("suggested_solution_added_successfully"));
                $this->editQuestion();
        }

        function addGIT()
        {
                $subquestion_index = 0;
                if ($_SESSION["subquestion_index"] >= 0)
                {
                        $subquestion_index = $_SESSION["subquestion_index"];
                }
                $this->object->setSuggestedSolution("il__git_" . $_GET["git"], $subquestion_index);
                unset($_SESSION["subquestion_index"]);
                unset($_SESSION["link_new_type"]);
                unset($_SESSION["search_link_type"]);
                sendInfo($this->lng->txt("suggested_solution_added_successfully"));
                $this->editQuestion();
        }
        
        function linkChilds()
        {
                switch ($_SESSION["search_link_type"])
                {
                        case "pg":
                                include_once "./content/classes/class.ilLMPageObject.php";
                                include_once("./content/classes/class.ilObjContentObject.php");
                                $cont_obj =& new ilObjContentObject($_GET["source_id"], true);
                                $pages = ilLMPageObject::getPageList($cont_obj->getId());
                                $_GET["q_id"] = $this->object->getId();
                                $this->tpl->setVariable("HEADER", $this->object->getTitle());
                                $this->getQuestionTemplate();
                                $color_class = array("tblrow1", "tblrow2");
                                $counter = 0;
                                $this->tpl->addBlockFile("LINK_SELECTION", "link_selection", "tpl.il_as_qpl_internallink_selection.html", true);
                                foreach($pages as $page)
                                {
                                        if($page["type"] == $_SESSION["search_link_type"])
                                        {
                                                $this->tpl->setCurrentBlock("linktable_row");
                                                $this->tpl->setVariable("TEXT_LINK", $page["title"]);
                                                $this->tpl->setVariable("TEXT_ADD", $this->lng->txt("add"));
                                                $this->tpl->setVariable("LINK_HREF", $this->ctrl->getLinkTargetByClass(get_class($this), "add" . strtoupper($page["type"])) . "&" . $page["type"] . "=" . $page["obj_id"]);
                                                $this->tpl->setVariable("COLOR_CLASS", $color_class[$counter % 2]);
                                                $this->tpl->parseCurrentBlock();
                                                $counter++;
                                        }
                                }
                                $this->tpl->setCurrentBlock("link_selection");
                                $this->tpl->setVariable("BUTTON_CANCEL",$this->lng->txt("cancel"));
                                $this->tpl->setVariable("TEXT_LINK_TYPE", $this->lng->txt("obj_" . $_SESSION["search_link_type"]));
                                $this->tpl->setVariable("FORMACTION",$this->ctrl->getFormAction($this));
                                $this->tpl->parseCurrentBlock();
                                break;
                        case "st":
                                $_GET["q_id"] = $this->object->getId();
                                $this->tpl->setVariable("HEADER", $this->object->getTitle());
                                $this->getQuestionTemplate();
                                $color_class = array("tblrow1", "tblrow2");
                                $counter = 0;
                                include_once("./content/classes/class.ilObjContentObject.php");
                                $cont_obj =& new ilObjContentObject($_GET["source_id"], true);
                                // get all chapters
                                $ctree =& $cont_obj->getLMTree();
                                $nodes = $ctree->getSubtree($ctree->getNodeData($ctree->getRootId()));
                                $this->tpl->addBlockFile("LINK_SELECTION", "link_selection", "tpl.il_as_qpl_internallink_selection.html", true);
                                foreach($nodes as $node)
                                {
                                        if($node["type"] == $_SESSION["search_link_type"])
                                        {
                                                $this->tpl->setCurrentBlock("linktable_row");
                                                $this->tpl->setVariable("TEXT_LINK", $node["title"]);
                                                $this->tpl->setVariable("TEXT_ADD", $this->lng->txt("add"));
                                                $this->tpl->setVariable("LINK_HREF", $this->ctrl->getLinkTargetByClass(get_class($this), "add" . strtoupper($node["type"])) . "&" . $node["type"] . "=" . $node["obj_id"]);
                                                $this->tpl->setVariable("COLOR_CLASS", $color_class[$counter % 2]);
                                                $this->tpl->parseCurrentBlock();
                                                $counter++;
                                        }
                                }
                                $this->tpl->setCurrentBlock("link_selection");
                                $this->tpl->setVariable("BUTTON_CANCEL",$this->lng->txt("cancel"));
                                $this->tpl->setVariable("TEXT_LINK_TYPE", $this->lng->txt("obj_" . $_SESSION["search_link_type"]));
                                $this->tpl->setVariable("FORMACTION",$this->ctrl->getFormAction($this));
                                $this->tpl->parseCurrentBlock();
                                break;
                        case "glo":
                                $_GET["q_id"] = $this->object->getId();
                                $this->tpl->setVariable("HEADER", $this->object->getTitle());
                                $this->getQuestionTemplate();
                                $color_class = array("tblrow1", "tblrow2");
                                $counter = 0;
                                $this->tpl->addBlockFile("LINK_SELECTION", "link_selection", "tpl.il_as_qpl_internallink_selection.html", true);
                                include_once "./content/classes/class.ilObjGlossary.php";
                                $glossary =& new ilObjGlossary($_GET["source_id"], true);
                                // get all glossary items
                                $terms = $glossary->getTermList();
                                foreach($terms as $term)
                                {
                                        $this->tpl->setCurrentBlock("linktable_row");
                                        $this->tpl->setVariable("TEXT_LINK", $term["term"]);
                                        $this->tpl->setVariable("TEXT_ADD", $this->lng->txt("add"));
                                        $this->tpl->setVariable("LINK_HREF", $this->ctrl->getLinkTargetByClass(get_class($this), "addGIT") . "&git=" . $term["id"]);
                                        $this->tpl->setVariable("COLOR_CLASS", $color_class[$counter % 2]);
                                        $this->tpl->parseCurrentBlock();
                                        $counter++;
                                }
                                $this->tpl->setCurrentBlock("link_selection");
                                $this->tpl->setVariable("BUTTON_CANCEL",$this->lng->txt("cancel"));
                                $this->tpl->setVariable("TEXT_LINK_TYPE", $this->lng->txt("glossary_term"));
                                $this->tpl->setVariable("FORMACTION",$this->ctrl->getFormAction($this));
                                $this->tpl->parseCurrentBlock();
                                break;
                        case "lm":
                                $subquestion_index = 0;
                                if ($_SESSION["subquestion_index"] >= 0)
                                {
                                        $subquestion_index = $_SESSION["subquestion_index"];
                                }
                                $this->object->setSuggestedSolution("il__lm_" . $_GET["source_id"], $subquestion_index);
                                unset($_SESSION["subquestion_index"]);
                                unset($_SESSION["link_new_type"]);
                                unset($_SESSION["search_link_type"]);
                                sendInfo($this->lng->txt("suggested_solution_added_successfully"));
                                $this->editQuestion();
                                break;
                }
        }
        
        function setSequenceNumber($nr) 
        {
                $this->sequence_no = $nr;
        }
        
        function getSequenceNumber() 
        {
                return $this->sequence_no;
        }
        
        function setQuestionCount($a_question_count)
        {
                $this->question_count = $a_question_count;
        }
        
        function getQuestionCount()
        {
                return $this->question_count;
        }
        
        function getErrorMessage()
        {
                return $this->errormessage;
        }
        
        function setErrorMessage($errormessage)
        {
                $this->errormessage = $errormessage;
        }
        
        function outAdditionalOutput()
        {
        }
}
?>