class.ilSurveyPageGUI.php

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<?php
/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */
 
class ilSurveyPageGUI 
{
        protected $ref_id; // [int]
        protected $lng; // [object]
        protected $object; // [ilObjSurvey]
        protected $editor_gui; // [ilSurveyEditorGUI]
        protected $current_page; // [int]
        protected $has_previous_page; // [bool]
        protected $has_next_page; // [bool]
        protected $has_datasets; // [bool]
        protected $use_pool; // [bool]
 
        protected $log;
 
        function __construct(ilObjSurvey $a_survey, ilSurveyEditorGUI $a_survey_editor_gui)
        {
                $this->editor_gui = $a_survey_editor_gui;
                $this->ref_id = $a_survey->getRefId();
                $this->object = $a_survey;
                $this->log = ilLoggerFactory::getLogger("svy");
        }
 
        function executeCommand()
        {
                global $lng, $ilCtrl, $rbacsystem;
 
                $cmd = $ilCtrl->getCmd("renderPage");
                $next_class = $ilCtrl->getNextClass($this);
 
                switch($next_class)
                {
                        default:
                                $this->determineCurrentPage();
 
                                $has_content = false;
                                
                                if($rbacsystem->checkAccess("write", $this->ref_id))
                                {
                                        // add page?
                                        if($_REQUEST["new_id"])
                                        {
                                                $this->insertNewQuestion($_REQUEST["new_id"]);
                                        }
 
                                        // subcommands
                                        if($_REQUEST["il_hform_subcmd"])
                                        {
                                                $subcmd = $_REQUEST["il_hform_subcmd"];
 
                                                // make sure that it is set for current and next requests
                                                $ilCtrl->setParameter($this->editor_gui, "pgov", $this->current_page);
                                                $_REQUEST["pgov"] = $this->current_page;
 
                                                $id = explode("_", $_REQUEST["il_hform_node"]);
                                                $id = (int)$id[1];
 
                                                // multi operation
                                                if(substr($_REQUEST["il_hform_subcmd"], 0, 5) == "multi")
                                                {
                                                        if($_REQUEST["il_hform_multi"])
                                                        {
                                                                // removing types as we only allow questions anyway
                                                                $id = array();
                                                                foreach(explode(";", $_REQUEST["il_hform_multi"]) as $item)
                                                                {
                                                                        $id[] = (int)array_pop(explode("_", $item));
                                                                }
 
                                                                if($subcmd == "multiDelete")
                                                                {
                                                                        $subcmd = "deleteQuestion";
                                                                }
                                                        }
                                                        else
                                                        {
                                                                // #9525
                                                                if($subcmd == "multiDelete")
                                                                {
                                                                        ilUtil::sendFailure($lng->txt("no_checkbox"), true);
                                                                        $ilCtrl->redirect($this, "renderPage");
                                                                }       
                                                                else
                                                                {
                                                                        ilUtil::sendFailure($lng->txt("no_checkbox"));
                                                                }
                                                        }
                                                }
 
                                                if(substr($subcmd, 0, 11) == "addQuestion")
                                                {
                                                        $type = explode("_", $subcmd);
                                                        $type = (int)$type[1];
                                                        $has_content = $this->addQuestion($type, $this->object->isPoolActive(), $id, $_REQUEST["il_hform_node"]);
                                                }
                                                else
                                                {
                                                        $has_content = $this->$subcmd($id, $_REQUEST["il_hform_node"]);
                                                }
                                        }
                                }
 
                                if(!$has_content)
                                {
                                        $this->$cmd();
                                }
                                break;
                }
        }
 
        public function determineCurrentPage()
        {
                $current_page = (int)$_REQUEST["jump"];
                if(!$current_page)
                {
                        $current_page = (int)$_REQUEST["pgov"];
                }
                if(!$current_page)
                {
                        $current_page = (int)$_REQUEST["pg"];
                }
                if(!$current_page)
                {
                        $current_page = 1;
                }
                $this->current_page = $current_page;
        }
 
        protected function appendNewQuestionToSurvey($a_new_id, $a_duplicate = true, $a_force_duplicate = false)
        {
                global $ilDB;
 
                $this->log->debug("append question, id: ".$a_new_id.", duplicate: ".$a_duplicate.", force: ".$a_force_duplicate);
 
                // get maximum sequence index in test
                $result = $ilDB->queryF("SELECT survey_question_id FROM svy_svy_qst WHERE survey_fi = %s",
                        array('integer'),
                        array($this->object->getSurveyId())
                );
                $sequence = $result->numRows();
 
                // create duplicate if pool question (or forced for question blocks copy)
                if($a_duplicate)
                {
                        // this does nothing if this is not a pool question and $a_force_duplicate is false
                        $survey_question_id = $this->object->duplicateQuestionForSurvey($a_new_id, $a_force_duplicate);
                }
                // used by copy & paste
                else
                {
                        $survey_question_id = $a_new_id;
                }
 
                // check if question is not already in the survey, see #22018
                if ($this->object->isQuestionInSurvey($survey_question_id))
                {
                        return $survey_question_id;
                }
 
                // append to survey 
                $next_id = $ilDB->nextId('svy_svy_qst');
                $affectedRows = $ilDB->manipulateF("INSERT INTO svy_svy_qst (survey_question_id, survey_fi,".
                        "question_fi, sequence, tstamp) VALUES (%s, %s, %s, %s, %s)",
                        array('integer', 'integer', 'integer', 'integer', 'integer'),
                        array($next_id, $this->object->getSurveyId(), $survey_question_id, $sequence, time())
                );
 
                $this->log->debug("insert svy_svy_qst, id: ".$next_id.", qfi: ".$survey_question_id.", seq: ".$sequence);
 
                return $survey_question_id;
        }
 
        public function insertNewQuestion($a_new_id)
        {
                global $rbacsystem, $ilDB, $lng;
 
                include_once "./Modules/SurveyQuestionPool/classes/class.SurveyQuestion.php";
                if (!SurveyQuestion::_isComplete($a_new_id))
                {
                        ilUtil::sendFailure($lng->txt("survey_error_insert_incomplete_question"));
                }
                else
                {
                        $a_new_id = $this->appendNewQuestionToSurvey($a_new_id);
                        $this->object->loadQuestionsFromDb();
 
                        $pos = $_REQUEST["pgov_pos"];
 
                        // a[fter]/b[efore] on same page
                        if(substr($pos, -1) != "c")
                        {
                                // block handling
                                $current = $this->object->getSurveyPages();
                                $current = $current[$this->current_page-1];
                                if(sizeof($current) == 1)
                                {
                                        // as questions are moved to first block question
                                        // always use existing as first
                                        // the new question is moved later on (see below)
                                        $this->object->createQuestionblock($this->getAutoBlockTitle(), true, false,
                                                                        array((int)$pos, $a_new_id));
                                }
                                else
                                {
                                        $block_id = array_pop($current);
                                        $block_id = $block_id["questionblock_id"];
 
                                        $this->object->addQuestionToBlock($a_new_id, $block_id);
                                }
                        }
                        // c: as new page (from toolbar/pool)
                        else
                        {
                                // after given question
                                if((int)$pos)
                                {
                                        $pos = (int)$pos."a";
                                        $this->current_page++;
                                }
                                // at the beginning
                                else
                                {
                                        $first = $this->object->getSurveyPages();
                                        $first = $first[0];
                                        $first = array_shift($first);
                                        $pos = $first["question_id"]."b";
                                        $this->current_page = 1;
                                }
                        }
 
                        // move to target position
                        $this->object->moveQuestions(array($a_new_id), (int)$pos,
                                ((substr($pos, -1) == "a") ? 1 : 0));
 
                        $this->object->fixSequenceStructure();
                }
        }
        
        public function insertQuestionBlock($a_block_id)
        {
                $new_ids = array();
                $question_ids = $this->object->getQuestionblockQuestionIds($a_block_id);
                foreach($question_ids as $qid)
                {
                        $new_ids[] = $this->appendNewQuestionToSurvey($qid, true, true);
                }
                
                if(sizeof($new_ids))
                {
                        $this->object->loadQuestionsFromDb();
                        
                        $pos = $_REQUEST["pgov_pos"];
                
                        // a[fter]/b[efore] on same page
                        if(substr($pos, -1) != "c")
                        {
                                // block handling
                                $current = $this->object->getSurveyPages();
                                $current = $current[$this->current_page-1];
                                if(sizeof($current) == 1)
                                {                                                                               
                                        // as questions are moved to first block question
                                        // always use existing as first
                                        // the new question is moved later on (see below)
                                        $this->object->createQuestionblock($this->getAutoBlockTitle(), true, false,
                                                                        array((int)$pos)+$new_ids);
                                }
                                else
                                {
                                        $block_id = array_pop($current);
                                        $block_id = $block_id["questionblock_id"];
 
                                        foreach($new_ids as $qid)
                                        {
                                                $this->object->addQuestionToBlock($qid, $block_id);
                                        }
                                }
                        }
                        // c: as new page (from toolbar/pool)
                        else
                        {
                                // re-create block
                                $this->object->createQuestionblock($this->getAutoBlockTitle(), true, false,
                                                                $new_ids);
                                
                                // after given question
                                if((int)$pos)
                                {
                                        $pos = (int)$pos."a";
                                }
                                // at the beginning
                                else
                                {
                                        $first = $this->object->getSurveyPages();
                                        $first = $first[0];
                                        $first = array_shift($first);
                                        $pos = $first["question_id"]."b";
                                }
                        }
 
                        // move to target position
                        $this->object->moveQuestions($new_ids, (int)$pos,
                                ((substr($pos, -1) == "a") ? 1 : 0));                   
                }
        }
 
        protected function addQuestion($a_type, $a_use_pool, $a_pos, $a_special_position)
        {
                global $ilCtrl, $ilTabs;
                
                // get translated type
                include_once "./Modules/SurveyQuestionPool/classes/class.ilObjSurveyQuestionPool.php";
                $questiontypes = ilObjSurveyQuestionPool::_getQuestiontypes();
                foreach($questiontypes as $item)
                {
                        if($item["questiontype_id"] == $a_type)
                        {
                                $type_trans = $item["type_tag"];
                        }
                }
 
                $id = $a_pos;
 
                // new page behind current (from toolbar)
                if($a_special_position == "toolbar")
                {
                        $id = $this->object->getSurveyPages();
                        if($a_pos && $a_pos != "fst")
                        {
                                $id = $id[$a_pos-1];
                                $id = array_pop($id);
                                $id = $id["question_id"]."c";
                        }
                        else
                        {
                                $id = "0c";
                        }
                }
                // append current page
                else if($a_special_position == "page_end")
                {
                        $id = $this->object->getSurveyPages();
                        $id = $id[$this->current_page-1];
                        $id = array_pop($id);
                        $id = $id["question_id"]."a";
                }
                else
                {
                        $id .= "b";
                }
 
                if($a_use_pool)
                {                                                                                               
                        $_GET["sel_question_types"] = $type_trans;
                        $_REQUEST["pgov_pos"] = $id;
                        $ilCtrl->setParameter($this->editor_gui, "pgov_pos", $id);
                        if(!$_POST["usage"])
                        {
                                $ilTabs->clearSubTabs(); // #17193              
                                $this->editor_gui->createQuestionObject();
                        }
                        else
                        {
                                $this->editor_gui->executeCreateQuestionObject();
                        }
                        return true;
                }
                else
                {
                        // create question and redirect to question form
                
                        include_once "./Modules/SurveyQuestionPool/classes/class.SurveyQuestionGUI.php";
                        $q_gui = SurveyQuestionGUI::_getQuestionGUI($type_trans);
                        $q_gui->object->setObjId($this->object->getId());
                        $q_gui->object->createNewQuestion();            
                        $q_gui_class = get_class($q_gui);       
 
                        // #12531
                        $ilCtrl->setParameterByClass($q_gui_class, "pgov", $this->current_page);
                        $ilCtrl->setParameterByClass($q_gui_class, "pgov_pos",$id);                                             
                        $ilCtrl->setParameterByClass($q_gui_class, "ref_id", $this->ref_id);
                        $ilCtrl->setParameterByClass($q_gui_class, "new_for_survey", $this->ref_id);
                        $ilCtrl->setParameterByClass($q_gui_class, "q_id", $q_gui->object->getId());
                        $ilCtrl->setParameterByClass($q_gui_class, "sel_question_types", $q_gui->getQuestionType());            
                        $ilCtrl->redirectByClass($q_gui_class, "editQuestion");                                 
                }
        }
        
        protected function cutQuestion($a_id)
        {
                global $lng;
                
                ilUtil::sendSuccess($lng->txt("survey_questions_to_clipboard_cut"));
                $this->suppress_clipboard_msg = true;
                
                $_SESSION["survey_page_view"][$this->ref_id]["clipboard"] = array(
                                                "source" => $this->current_page,
                                                "nodes" => array($a_id),
                                                "mode" => "cut");
        }
        
        protected function copyQuestion($a_id)
        {
                global $lng;
                
                ilUtil::sendSuccess($lng->txt("survey_questions_to_clipboard_copy"));
                $this->suppress_clipboard_msg = true;
                
                $_SESSION["survey_page_view"][$this->ref_id]["clipboard"] = array(
                                                "source" => $this->current_page,
                                                "nodes" => array($a_id),
                                                "mode" => "copy");
        }
 
        protected function multiCut($a_id)
        {
                global $lng;
 
                if (is_array($a_id))
                {
                        ilUtil::sendSuccess($lng->txt("survey_questions_to_clipboard_cut"));
                        $this->suppress_clipboard_msg = true;
 
                        $_SESSION["survey_page_view"][$this->ref_id]["clipboard"] = array(
                                "source" => $this->current_page,
                                "nodes" => $a_id,
                                "mode" => "cut");
                }
        }
 
        protected function multiCopy($a_id)
        {
                global $lng;
 
                if (is_array($a_id))
                {
                        ilUtil::sendSuccess($lng->txt("survey_questions_to_clipboard_copy"));
                        $this->suppress_clipboard_msg = true;
 
                        $_SESSION["survey_page_view"][$this->ref_id]["clipboard"] = array(
                                "source" => $this->current_page,
                                "nodes" => $a_id,
                                "mode" => "copy");
                }
        }
 
        protected function clearClipboard()
        {
                $_SESSION["survey_page_view"][$this->ref_id]["clipboard"] = null;
        }
 
        protected function paste($a_id)
        {
                $data = $_SESSION["survey_page_view"][$this->ref_id]["clipboard"];
                $pages = $this->object->getSurveyPages();
                $source = $pages[$data["source"]-1];
                $target = $pages[$this->current_page-1];
                                
                // #12558 - use order of source page
                $nodes = array();
                foreach($source as $src_qst)
                {
                        if(in_array($src_qst["question_id"], $data["nodes"]))
                        {
                                $nodes[] = $src_qst["question_id"];
                        }
                }
                
                // append to last position?
                $pos = 0;
                if($_REQUEST["il_hform_node"] == "page_end")
                {
                        $a_id = $target;
                        $a_id = array_pop($a_id);
                        $a_id = $a_id["question_id"];
                        $pos = 1;
                }
                
                // cut                  
                if($data["mode"] == "cut")
                {                               
                        // special case: paste cut on same page (no block handling needed)
                        if($data["source"] == $this->current_page)
                        {
                                // re-order nodes in page
                                if(sizeof($nodes) <= sizeof($source))
                                {
                                        $this->object->moveQuestions($nodes, $a_id, $pos);                                                                      
                                }                       
                                $this->clearClipboard();
                                return;
                        }
                        else
                        {
                                // only if source has block
                                $source_block_id = false;
                                if(sizeof($source) > 1)
                                {
                                        $source_block_id = $source;
                                        $source_block_id = array_shift($source_block_id);
                                        $source_block_id = $source_block_id["questionblock_id"];
 
                                        // remove from block
                                        if(sizeof($source) > sizeof($nodes))
                                        {
                                                foreach($nodes as $qid)
                                                {
                                                        $this->object->removeQuestionFromBlock($qid, $source_block_id);
                                                }
                                        }
                                        // remove complete block
                                        else
                                        {
                                                $this->object->unfoldQuestionblocks(array($source_block_id));
                                        }
                                }
 
                                // page will be "deleted" by operation
                                if(sizeof($source) == sizeof($nodes) && $data["source"] < $this->current_page)
                                {
                                        $this->current_page--;
                                }
                        }
                }               
                
                // copy
                else if($data["mode"] == "copy")
                {
                        $titles = array();
                        foreach($this->object->getSurveyPages() as $page)
                        {
                                foreach($page as $question)
                                {
                                        $titles[] = $question["title"];
                                }
                        }
 
                        // copy questions
                        $question_pointer = array();
                        foreach($nodes as $qid)
                        {                                                                               
                                // create new questions
                                $question = ilObjSurvey::_instanciateQuestion($qid);
 
                                // handle exisiting copies
                                $title = $question->getTitle();
                                $max = 0;
                                foreach($titles as $existing_title)
                                {
                                        #21278 preg_quote with delimiter
                                        if(preg_match("/".preg_quote($title, "/")." \‍(([0-9]+)\‍)$/", $existing_title, $match))
                                        {
                                                $max = max($match[1], $max);                                            
                                        }
                                }                                       
                                if($max)
                                {
                                        $title .= " (".($max+1).")";
                                }
                                else
                                {
                                        $title .= " (2)";
                                }                                       
                                $titles[] = $title;
                                $question->setTitle($title);                                    
 
                                $question->id = -1;
                                $question->saveToDb();
 
                                $question_pointer[$qid] = $question->getId();
                                $this->appendNewQuestionToSurvey($question->getId(), false);
                        }
 
                        // copy textblocks
                        $this->object->cloneTextblocks($question_pointer);
 
                        $this->object->loadQuestionsFromDb();
 
                        $nodes = array_values($question_pointer);
                }
 
                        
                // paste
 
                // create new block
                if(sizeof($target) == 1)
                {
                        $nodes = array_merge(array($a_id), $nodes);
 
                        // moveQuestions() is called within
                        $this->object->createQuestionblock($this->getAutoBlockTitle(), true, false,
                                $nodes);
                }
                // add to existing block
                else
                {
                        $target_block_id = $target;
                        $target_block_id = array_shift($target_block_id);
                        $target_block_id = $target_block_id["questionblock_id"];
 
                        foreach($nodes as $qid)
                        {
                                $this->object->addQuestionToBlock($qid, $target_block_id);
                        }
 
                        // move to new position
                        $this->object->moveQuestions($nodes, $a_id, $pos);
                }
 
                $this->clearClipboard();
        }
 
        protected function dnd()
        {
                $source_id = (int)array_pop(explode("_", $_REQUEST["il_hform_source"]));
                if($_REQUEST["il_hform_target"] != "droparea_end")
                {
                        $target_id = (int)array_pop(explode("_", $_REQUEST["il_hform_target"]));
                        $pos = 0;
                }
                else
                {
                        $page = $this->object->getSurveyPages();
                        $page = $page[$this->current_page-1];
                        $last = array_pop($page);
                        $target_id = (int)$last["question_id"];
                        $pos = 1;
                }
                if($source_id != $target_id)
                {
                        $this->object->moveQuestions(array($source_id), $target_id, $pos);
                }
        }
 
        protected function deleteBlock()
        {
                global $lng, $ilCtrl;
                
                $ilCtrl->setParameter($this->editor_gui, "pgov", $this->current_page);
                ilUtil::sendQuestion($lng->txt("remove_questions"));
                
                $page = $this->object->getSurveyPages();
                $page = $page[$this->current_page-1];
                
                // #10567
                if($_REQUEST["csum"] != md5(print_r($page, true)))
                {
                        $ilCtrl->redirect($this, "renderPage");
                }
                
                $page = array_shift($page);
                $block_id = $page["questionblock_id"];
                if($block_id)
                {
                        $this->editor_gui->removeQuestionsForm(array($block_id), array(), array());
                }
                else
                {
                        $this->editor_gui->removeQuestionsForm(array(), array($page["question_id"]), array());
                }
        }
 
    protected function deleteQuestion($a_id)
        {
                global $ilCtrl;
                
                if(!is_array($a_id))
                {
                        $a_id = array($a_id);
                }
                
                $ilCtrl->setParameter($this->editor_gui, "pgov", $this->current_page);
                $this->editor_gui->removeQuestionsForm(array(), $a_id, array());
                return true;
        }
 
        protected function confirmRemoveQuestions()
        {
                global $ilCtrl;
                
                // gather ids
                $ids = array();
                foreach ($_POST as $key => $value)
                {
                        if (preg_match("/id_(\d+)/", $key, $matches))
                        {
                                array_push($ids, $matches[1]);
                        }
                }
 
 
                $pages = $this->object->getSurveyPages();
                $source = $pages[$this->current_page-1];
 
                $block_id = $source;
                $block_id = array_shift($block_id);
                $block_id = $block_id["questionblock_id"];
 
                if(sizeof($ids) && sizeof($source) > sizeof($ids))
                {
                        // block is obsolete
                        if(sizeof($source)-sizeof($ids) == 1)
                        {
                                $this->object->unfoldQuestionblocks(array($block_id));
                        }
                        // block will remain, remove question(s) from block
                        else
                        {
                                foreach($ids as $qid)
                                {
                                        $this->object->removeQuestionFromBlock($qid, $block_id);
                                }
                        }
 
                        $this->object->removeQuestions($ids, array());
                }
                // all items on page 
                else 
                {
                        // remove complete block
                        if($block_id)
                        {
                                $this->object->removeQuestions(array(), array($block_id));
                        }
                        // remove single question
                        else
                        {                               
                                $this->object->removeQuestions($ids, array());
                        }
 
                        // render previous page
                        if($this->current_page > 1)
                        {
                                $this->current_page--;
                        }
                }
 
                $this->object->saveCompletionStatus();
                        
                // #10567
                $ilCtrl->setParameter($this, "pgov", $this->current_page);
                $ilCtrl->redirect($this, "renderPage");
        }
 
        protected function editBlock($a_id)
        {
                $this->callEditor("editQuestionblockObject", "bl_id", $a_id);           
                return true;
        }
        
        protected function addHeading($a_id)
        {
                $this->callEditor("addHeadingObject", "q_id", $a_id);           
                return true;
        }
 
        protected function editHeading($a_id)
        {
                $this->callEditor("editHeadingObject", "q_id", $a_id);          
                return true;
        }
 
        protected function deleteHeading($a_id)
        {
                $this->callEditor("removeHeadingObject", "q_id", $a_id);
                return true;
        }
        
        protected function callEditor($a_cmd, $a_param, $a_value)
        {
                global $ilTabs;
                
                $ilTabs->clearSubTabs();
                $_REQUEST[$a_param] = $a_value;
                
                call_user_func(array($this->editor_gui, $a_cmd));
        }
 
        protected function splitPage($a_id)
        {
                $pages = $this->object->getSurveyPages();
                $source = $pages[$this->current_page-1];
 
                $block_questions = array();
                $add = $block_id = false;
                foreach($source as $idx => $item)
                {
                        if($item["question_id"] == $a_id)
                        {
                                $block_id = $item["questionblock_id"];
                                $add = $idx;
                        }
                        if($add)
                        {
                                $block_questions[] = $item["question_id"];
                        }
                }
 
                // just 1 question left: block is obsolete
                if($add == 1)
                {
                        $this->object->unfoldQuestionblocks(array($block_id));
                }
                // remove questions from block
                else
                {
                        foreach($block_questions as $qid)
                        {
                                $this->object->removeQuestionFromBlock($qid, $block_id);
                        }
                }
 
                // more than 1 moved?
                if(sizeof($block_questions) > 1)
                {
                        // create new block and move target questions
                        $this->object->createQuestionblock($this->getAutoBlockTitle(), true, false,
                                $block_questions);
                }
                
                $this->current_page++;
        }
 
        protected function moveNext($a_id)
        {
                $pages = $this->object->getSurveyPages();
                $source = $pages[$this->current_page-1];
                $target = $pages[$this->current_page];
                if(sizeof($target))
                {
                        $target_id = $target;
                        $target_id = array_shift($target_id);
                        $target_block_id = $target_id["questionblock_id"];
                        $target_id = $target_id["question_id"];
 
                        // nothing to do if no block
                        if(sizeof($source) > 1)
                        {
                                $block_id = $source;
                                $block_id = array_shift($block_id);
                                $block_id = $block_id["questionblock_id"];
 
                                // source pages block is obsolete
                                if(sizeof($source) == 2)
                                {
                                        // delete block
                                        $this->object->unfoldQuestionblocks(array($block_id));
                                }
                                else
                                {
                                        // remove question from block
                                        $this->object->removeQuestionFromBlock($a_id, $block_id);
                                }
                        }
 
                        // move source question to target
                        $this->object->moveQuestions(array($a_id), $target_id, 0);
 
                        // new page has no block yet
                        if(sizeof($target) < 2)
                        {
                                // create block and  move target question and source into block
                                $this->object->createQuestionblock($this->getAutoBlockTitle(), true, false,
                                        array($a_id, $target_id));
                        }
                        else
                        {
                                // add source question to block
                                $this->object->addQuestionToBlock($a_id, $target_block_id);
                        }
 
                        // only if current page is not "deleted"
                        if(sizeof($source) > 1)
                        {
                                $this->current_page++;
                        }
                }
        }
 
        protected function movePrevious($a_id)
        {
                $pages = $this->object->getSurveyPages();
                $source = $pages[$this->current_page-1];
                $target = $pages[$this->current_page-2];
                if(sizeof($target))
                {
                        $target_id = $target;
                        $target_id = array_pop($target_id);
                        $target_block_id = $target_id["questionblock_id"];
                        $target_id = $target_id["question_id"];
 
                        // nothing to do if no block
                        if(sizeof($source) > 1)
                        {
                                $block_id = $source;
                                $block_id = array_shift($block_id);
                                $block_id = $block_id["questionblock_id"];
 
                                // source pages block is obsolete
                                if(sizeof($source) == 2)
                                {
                                        // delete block
                                        $this->object->unfoldQuestionblocks(array($block_id));
                                }
                                else
                                {
                                        // remove question from block
                                        $this->object->removeQuestionFromBlock($a_id, $block_id);
                                }
                        }
 
                        // move source question to target
                        $this->object->moveQuestions(array($a_id), $target_id, 1);
 
                        // new page has no block yet
                        if(sizeof($target) < 2)
                        {
                                // create block and  move target question and source into block
                                $this->object->createQuestionblock($this->getAutoBlockTitle(), true, false,
                                        array($target_id, $a_id));
                        }
                        else
                        {
                                // add source question to block
                                $this->object->addQuestionToBlock($a_id, $target_block_id);
                        }
 
                        $this->current_page--;
                }
        }
 
        protected function editQuestion($a_id)
        {
                global $ilCtrl;
                
                $data = $this->object->getSurveyQuestions();
                $data = $data[$a_id];
                                        
                $q_gui = $data["type_tag"]."GUI";               
                $ilCtrl->setParameterByClass($q_gui, "pgov", $this->current_page);
                $ilCtrl->setParameterByClass($q_gui, "q_id", $a_id);
                
                $ilCtrl->redirectByClass($q_gui, "editQuestion");
        }
 
        protected function addQuestionToolbarForm()
        {
                global $lng, $ilCtrl, $tpl;
 
                include_once "Services/Form/classes/class.ilPropertyFormGUI.php";
                $form = new ilPropertyFormGUI();
                $form->setFormAction($ilCtrl->getFormAction($this, "addQuestionToolbar"));
                $form->setTitle($lng->txt("survey_add_new_question"));
 
                // question types
                include_once "./Modules/SurveyQuestionPool/classes/class.ilObjSurveyQuestionPool.php";
                $questiontypes = ilObjSurveyQuestionPool::_getQuestiontypes();
                $type_map = array();
                foreach($questiontypes as $trans => $item)
                {
                        $type_map[$item["questiontype_id"]] = $trans;
                }
                include_once("./Services/Form/classes/class.ilSelectInputGUI.php");
                $si = new ilSelectInputGUI($lng->txt("question_type"), "qtype");
                $si->setOptions($type_map);
                $form->addItem($si);
 
                $pages = $this->object->getSurveyPages();
                if($pages)
                {
                        $pages_drop = array("fst"=>$lng->txt("survey_at_beginning"));
                        foreach($pages as $idx => $questions)
                        {
                                $question = array_shift($questions);
                                if($question["questionblock_id"])
                                {
                                        $pages_drop[$idx+1] = $lng->txt("survey_behind_page")." ".$question["questionblock_title"];
                                }
                                else
                                {
                                        $pages_drop[$idx+1] = $lng->txt("survey_behind_page")." ".strip_tags($question["title"]);
                                }
                        }
                        $pos = new ilSelectInputGUI($lng->txt("position"), "pgov");
                        $pos->setOptions($pages_drop);
                        $form->addItem($pos);
 
                        $pos->setValue($this->current_page);
                }
                else
                {
                        // #9089: 1st page 
                        $pos = new ilHiddenInputGUI("pgov");
                        $pos->setValue("fst");
                        $form->addItem($pos);
                }
 
                if($this->object->isPoolActive())
                {
                        $this->editor_gui->createQuestionObject($form);
                }
 
                $form->addCommandButton("addQuestionToolbar", $lng->txt("create"));
                $form->addCommandButton("renderPage", $lng->txt("cancel"));
 
                return $tpl->setContent($form->getHTML());
        }
                
        protected function addQuestionToolbar()
        {
                global $ilCtrl, $lng;
 
                $pool_active = $this->object->isPoolActive();
 
                if(!$_POST["usage"] && $pool_active)
                {
                        ilUtil::sendFailure($lng->txt("select_one"), true);
                        return $this->addQuestionToolbarForm();
                }
 
                // make sure that it is set for current and next requests
                $ilCtrl->setParameter($this->editor_gui, "pgov", $this->current_page);
 
                if(!$this->addQuestion($_POST["qtype"], $pool_active, $_POST["pgov"], "toolbar"))
                {
                        $this->renderPage();
                }
        }
 
        protected function movePageForm()
        {
                global $lng, $ilCtrl, $tpl;
 
                include_once "Services/Form/classes/class.ilPropertyFormGUI.php";
                $form = new ilPropertyFormGUI();
                $form->setFormAction($ilCtrl->getFormAction($this, "movePage"));
                $form->setTitle($lng->txt("survey_move_page"));
                
                $old_pos = new ilHiddenInputGUI("old_pos");
                $old_pos->setValue($this->current_page);
                $form->addItem($old_pos);
 
                $pages = $this->object->getSurveyPages();
                if($pages)
                {
                        $pages_drop = array();
                        if($this->current_page != 1)
                        {
                                $pages_drop["fst"] = $lng->txt("survey_at_beginning");
                        }
                        foreach($pages as $idx => $questions)
                        {
                                if(($idx+1) != $this->current_page && ($idx+2) != $this->current_page)
                                {
                                        $question = array_shift($questions);
                                        if($question["questionblock_id"])
                                        {
                                                $pages_drop[$idx+1] = $lng->txt("survey_behind_page")." ".$question["questionblock_title"];
                                        }
                                        else
                                        {
                                                $pages_drop[$idx+1] = $lng->txt("survey_behind_page")." ".strip_tags($question["title"]);
                                        }
                                }
                        }
                        $pos = new ilSelectInputGUI($lng->txt("position"), "pgov");
                        $pos->setOptions($pages_drop);
                        $form->addItem($pos);
                }
 
                $form->addCommandButton("movePage", $lng->txt("submit"));
                $form->addCommandButton("renderPage", $lng->txt("cancel"));
 
                return $tpl->setContent($form->getHTML());
        }
 
        protected function movePage()
        {
                global $lng, $ilCtrl;
 
                // current_page is already set to new position
                $target_page = $this->current_page-1;
                $source_page = $_REQUEST["old_pos"]-1;
 
                $pages = $this->object->getSurveyPages();
                foreach($pages[$source_page] as $question)
                {
                        $questions[] = $question["question_id"];
                }
 
                // move to first position
                $position = 0;
                if($_REQUEST["pgov"] != "fst")
                {
                        $position = 1;
                }
 
                $target = $pages[$target_page];
                if ($position == 0)                                                             // before
                {
                        $target = array_shift($target);             // ... use always the first question of the page
                }
                else                                                                                    // after
                {
                        $target = array_pop($target);             // ... use always the last question of the page
                }
                $this->object->moveQuestions($questions, $target["question_id"], $position);
 
                if($target_page < $source_page && $position)
                {
                   $this->current_page++;
                }
 
                ilUtil::sendSuccess($lng->txt("survey_page_moved"), true);
                $ilCtrl->setParameter($this, "pgov", $this->current_page);
                $ilCtrl->redirect($this, "renderPage");
        }
 
        protected function renderToolbar($a_pages)
        {
                global $ilToolbar, $ilCtrl, $lng, $ilUser;
                
                include_once "Services/UIComponent/Button/classes/class.ilLinkButton.php";
 
                if(!$this->has_datasets)
                {                       
                        $button = ilLinkButton::getInstance();
                        $button->setCaption("survey_add_new_question");                                                         
                        $button->setUrl($ilCtrl->getLinkTarget($this, "addQuestionToolbarForm"));                                                                               
                        $ilToolbar->addStickyItem($button);             
 
                        if($this->object->isPoolActive())
                        {
                                //$ilToolbar->addSeparator();
 
                                $last_on_page = 0;
                                if($a_pages && 
                                        is_array($a_pages[$this->current_page-1]))
                                {
                                        $last_on_page = $a_pages[$this->current_page-1];                                        
                                        $last_on_page = array_pop($last_on_page);
                                        $last_on_page = $last_on_page["question_id"];
                                }
 
                                $ilCtrl->setParameter($this->editor_gui, "pgov", $this->current_page);
                                $ilCtrl->setParameter($this->editor_gui, "pgov_pos", $last_on_page."c");
 
                                $cmd = ($ilUser->getPref('svy_insert_type') == 1 || 
                                        strlen($ilUser->getPref('svy_insert_type')) == 0) 
                                        ? 'browseForQuestions' 
                                        : 'browseForQuestionblocks';
                                                                
                                $button = ilLinkButton::getInstance();
                                $button->setCaption("browse_for_questions");                                                            
                                $button->setUrl($ilCtrl->getLinkTarget($this->editor_gui, $cmd));                                                                               
                                $ilToolbar->addStickyItem($button);             
                                
                                $ilCtrl->setParameter($this->editor_gui, "pgov", "");
                                $ilCtrl->setParameter($this->editor_gui, "pgov_pos", "");
                        }
                        
                        if($a_pages)
                        {
                                $ilToolbar->addSeparator();
                        }
                }
                
                // parse data for pages drop-down
                if($a_pages)
                {
                        // previous/next
                        
                        $ilCtrl->setParameter($this, "pg", $this->current_page-1);
                        $button = ilLinkButton::getInstance();
                        $button->setCaption("survey_prev_question");                                                            
                        $button->setUrl($ilCtrl->getLinkTarget($this, "renderPage"));   
                        $button->setDisabled(!$this->has_previous_page);                                                
                        $ilToolbar->addStickyItem($button);             
                        
                        $ilCtrl->setParameter($this, "pg", $this->current_page+1);
                        $button = ilLinkButton::getInstance();
                        $button->setCaption("survey_next_question");                                                            
                        $button->setUrl($ilCtrl->getLinkTarget($this, "renderPage"));   
                        $button->setDisabled(!$this->has_next_page);                                            
                        $ilToolbar->addStickyItem($button);             
                        
                        $ilCtrl->setParameter($this, "pg", $this->current_page); // #14615
                        
                        foreach($a_pages as $idx => $questions)
                        {
                                $page = $questions;
                                $page = array_shift($page);
                                if($page["questionblock_id"])
                                {
                                        $pages_drop[$idx+1] = $page["questionblock_title"];
 
                                        if(sizeof($questions) > 1)
                                        {
                                                foreach($questions as $question)
                                                {
                                                        $pages_drop[($idx+1)."__".$question["question_id"]] = "- ".$question["title"];
                                                }
                                        }
                                }
                                else
                                {
                                        $pages_drop[$idx+1] = strip_tags($page["title"]);
                                }
                        }
                }
 
                // jump to page
                if(sizeof($pages_drop) > 1)
                {
                        //$ilToolbar->addSeparator();
 
                        $ilToolbar->setFormAction($ilCtrl->getFormAction($this));
 
                        include_once("./Services/Form/classes/class.ilPropertyFormGUI.php");
                        $si = new ilSelectInputGUI($lng->txt("survey_jump_to"), "jump");
                        $si->addCustomAttribute("onChange=\"forms['ilToolbar'].submit();\"");
                        $si->setOptions($pages_drop);
                        $si->setValue($this->current_page);
                        $ilToolbar->addInputItem($si, true);
 
                        // we need this to have to right cmd
                        $cmd = new ilHiddenInputGUI("cmd[renderPage]");
                        $cmd->setValue("1");
                        $ilToolbar->addInputItem($cmd);
                
                        if(!$this->has_datasets)
                        {                                                               
                                $ilToolbar->addSeparator();
                                
                                $ilCtrl->setParameter($this, "csum", md5(print_r($a_pages[$this->current_page-1], true)));
                                $url = $ilCtrl->getLinkTarget($this, "deleteBlock");
                                $ilCtrl->setParameter($this, "csum", "");       
                                
                                $button = ilLinkButton::getInstance();
                                $button->setCaption("survey_delete_page");                                                              
                                $button->setUrl($url);                                                                          
                                $ilToolbar->addButtonInstance($button);                                                                 
                                
                                $ilToolbar->addSeparator();
                                
                                $button = ilLinkButton::getInstance();
                                $button->setCaption("survey_move_page");                                                                
                                $button->setUrl($ilCtrl->getLinkTarget($this, "movePageForm"));                                                                         
                                $ilToolbar->addButtonInstance($button);                                         
                        }
                }
        }
 
        protected function renderPage()
        {
                global $ilCtrl, $lng, $tpl, $rbacsystem;
 
                $pages = $this->object->getSurveyPages();
                $this->has_next_page = ($this->current_page < sizeof($pages));
                $this->has_previous_page = ($this->current_page > 1);
                $this->has_datasets = ilObjSurvey::_hasDatasets($this->object->getSurveyId());
                
                if($this->has_datasets)
                {
                        $link = $ilCtrl->getLinkTargetByClass(array("ilobjsurveygui", "ilsurveyparticipantsgui"), "maintenance");
                        $link = "<a href=\"".$link."\">".$lng->txt("survey_has_datasets_warning_page_view_link")."</a>";
                        ilUtil::sendInfo($lng->txt("survey_has_datasets_warning_page_view")." ".$link);
                }
 
                $ilCtrl->setParameter($this, "pg", $this->current_page);
                $ilCtrl->setParameter($this, "pgov", "");
 
                $this->renderToolbar($pages);
 
                if($pages)
                {
                        $ttpl = new ilTemplate("tpl.il_svy_svy_page_view.html", true, true, "Modules/Survey");
                        $ttpl->setVariable("FORM_ACTION", $ilCtrl->getFormAction($this));                       
                        $lng->loadLanguageModule("form");
 
                        $read_only = ($this->has_datasets || !$rbacsystem->checkAccess("write", $this->ref_id));
 
                        $commands = $multi_commands = array();
 
                        if(!$read_only)
                        {
                                // clipboard is empty
                                if(!$_SESSION["survey_page_view"][$this->ref_id]["clipboard"])
                                {
                                        $multi_commands[] = array("cmd"=>"multiDelete", "text"=>$lng->txt("delete"));
                                        $multi_commands[] = array("cmd"=>"multiCut", "text"=>$lng->txt("cut"));
                                        $multi_commands[] = array("cmd"=>"multiCopy", "text"=>$lng->txt("copy"));                                       
                                        $multi_commands[] = array("cmd"=>"selectAll", "text"=>$lng->txt("select_all"));
                                }
                                else
                                {
                                        if(!$this->suppress_clipboard_msg)
                                        {
                                                ilUtil::sendInfo($lng->txt("survey_clipboard_notice"));
                                        }
                                        $multi_commands[] = array("cmd"=>"clearClipboard", "text"=>$lng->txt("survey_dnd_clear_clipboard"));
                                }
 
                                // help - see ilPageObjectGUI::insertHelp()                                             
                                $lng->loadLanguageModule("content");                                                    
                                $ttpl->setCurrentBlock("help_section");
                                $ttpl->setVariable("TXT_ADD_EL", $lng->txt("cont_add_elements"));
                                include_once("./Services/UIComponent/Glyph/classes/class.ilGlyphGUI.php");
                                $ttpl->setVariable("PLUS", ilGlyphGUI::get(ilGlyphGUI::ADD));
                                $ttpl->setVariable("DRAG_ARROW", ilGlyphGUI::get(ilGlyphGUI::DRAG));
                                $ttpl->setVariable("TXT_DRAG", $lng->txt("cont_drag_and_drop_elements"));
                                $ttpl->setVariable("TXT_SEL", $lng->txt("cont_double_click_to_delete"));
                                $ttpl->parseCurrentBlock();
 
                                $ttpl->setVariable("DND_INIT_JS", "initDragElements();");
 
 
                                // tiny mce
                                
                                include_once "./Services/AdvancedEditing/classes/class.ilObjAdvancedEditing.php";
                                $tags = ilObjAdvancedEditing::_getUsedHTMLTags("survey");
 
                                include_once "./Services/RTE/classes/class.ilTinyMCE.php";
                                $tiny = new ilTinyMCE();                                
                                $ttpl->setVariable("WYSIWYG_BLOCKFORMATS", $tiny->_buildAdvancedBlockformatsFromHTMLTags($tags));
                                $ttpl->setVariable("WYSIWYG_VALID_ELEMENTS", $tiny->_getValidElementsFromHTMLTags($tags));
 
                                $buttons_1 = $tiny->_buildAdvancedButtonsFromHTMLTags(1, $tags);
                                $buttons_2 = $tiny->_buildAdvancedButtonsFromHTMLTags(2, $tags).','.
                                                        $tiny->_buildAdvancedTableButtonsFromHTMLTags($tags).
                                                        ($tiny->getStyleSelect() ? ',styleselect' : '');
                                $buttons_3 = $tiny->_buildAdvancedButtonsFromHTMLTags(3, $tags);
                                $ttpl->setVariable('WYSIWYG_BUTTONS_1', ilTinyMCE::removeRedundantSeparators($buttons_1));
                                $ttpl->setVariable('WYSIWYG_BUTTONS_2', ilTinyMCE::removeRedundantSeparators($buttons_2));
                                $ttpl->setVariable('WYSIWYG_BUTTONS_3', ilTinyMCE::removeRedundantSeparators($buttons_3));
                        }
 
                        // commands
                        if (count($multi_commands) > 0)
                        {                                                               
                                foreach($multi_commands as $cmd)
                                {
                                        $ttpl->setCurrentBlock("multi_cmd");
                                        $ttpl->setVariable("ORG_CMD_MULTI", "renderPage");
                                        $ttpl->setVariable("MULTI_CMD", $cmd["cmd"]);
                                        $ttpl->setVariable("MULTI_CMD_TXT", $cmd["text"]);
                                        $ttpl->parseCurrentBlock();                                     
                                }
                                
                                $ttpl->setCurrentBlock("multi_cmds");
                                $ttpl->setVariable("MCMD_ALT", $lng->txt("commands"));
                                $ttpl->setVariable("MCMD_IMG", ilUtil::getImagePath("arrow_downright.svg"));
                                $ttpl->parseCurrentBlock();
                        }
 
                        // nodes
                        $ttpl->setVariable("NODES", $this->getPageNodes($pages[$this->current_page-1],
                                $this->has_previous_page, $this->has_next_page, $read_only));
 
                        $tpl->setContent($ttpl->get());
 
                        // add js to template
                        include_once("./Services/YUI/classes/class.ilYuiUtil.php");
                        ilYuiUtil::initDragDrop();
                        $tpl->addJavascript("./Modules/Survey/js/SurveyPageView.js");
                        $tpl->addJavascript("./Services/RTE/tiny_mce_3_5_11/tiny_mce_src.js");
                }
        }
 
        function getPageNodes(array $a_questions, $a_has_previous_page = false, $a_has_next_page = false, $a_readonly = false)
        {
                global $ilCtrl, $lng;
                
                $ttpl = new ilTemplate("tpl.il_svy_svy_page_view_nodes.html", true, true, "Modules/Survey");
 
                $has_clipboard = (bool)$_SESSION["survey_page_view"][$this->ref_id]["clipboard"];
 
                // question block ?
 
                $first_question = $a_questions;
                $first_question = array_shift($first_question);
 
                if($first_question["questionblock_id"])
                {
                        $menu = array();
 
                        if(!$a_readonly && !$has_clipboard)
                        {
                                $menu[] = array("cmd" => "editBlock", "text" => $lng->txt("edit"));
                        }
 
                        if($first_question["questionblock_show_blocktitle"])
                        {
                                $block_status = $lng->txt("survey_block_visible");
                        }
                        else
                        {
                                $block_status = $lng->txt("survey_block_hidden");
                        }
 
                        $this->renderPageNode($ttpl, "block", $first_question["questionblock_id"],
                                $first_question["questionblock_title"]." (".$block_status.")", $menu, false, false, $block_status);
                }
 
 
                // questions/headings
 
                include_once "./Modules/SurveyQuestionPool/classes/class.ilObjSurveyQuestionPool.php";
                $questiontypes = ilObjSurveyQuestionPool::_getQuestiontypes();
                $questionpools = array_keys($this->object->getQuestionpoolTitles(true));
                
                $counter = $question_count;
                $block_done = null;
                foreach($a_questions as $idx => $question)
                {
                        // drop area
 
                        $menu = array();
 
                        if(!$a_readonly)
                        {
                                if(!$has_clipboard)
                                {
                                        foreach($questiontypes as $trans => $item)
                                        {
                                                $menu[] = array("cmd"=> "addQuestion_".$item["questiontype_id"],
                                                        "text"=> sprintf($lng->txt("svy_page_add_question"), $trans));
                                        }
                                        
                                        if($this->object->isPoolActive())
                                        {
                                                $menu[] = array("cmd"=> "addPoolQuestion",
                                                        "text"=> $lng->txt("browse_for_questions"));
                                        }
                                }
                                else 
                                {
                                        $menu[] = array("cmd" => "paste", "text" => $lng->txt("survey_dnd_paste"));
                                }
                        }
 
                        $this->renderPageNode($ttpl, "droparea", $question["question_id"], null, $menu, true);
 
                        // question
                        $question_gui = $this->object->getQuestionGUI($question["type_tag"], $question["question_id"]);
                        $question_form = $question_gui->getWorkingForm(array(), $this->object->getShowQuestionTitles(),
                                        $question["questionblock_show_questiontext"], null, $this->object->getSurveyId());
 
                        $menu = array();
 
                        if(!$a_readonly && !$has_clipboard)
                        {                                                               
                                $menu[] = array("cmd" => "editQuestion", "text" => $lng->txt("edit"));                          
                                $menu[] = array("cmd" => "cutQuestion", "text" => $lng->txt("cut"));
                                $menu[] = array("cmd" => "copyQuestion", "text" => $lng->txt("copy"));
 
                                if(sizeof($a_questions) > 1 && $idx > 0)
                                {
                                        $menu[] = array("cmd" => "splitPage", "text" => $lng->txt("survey_dnd_split_page"));
                                }
                                if($a_has_next_page)
                                {
                                        $menu[] = array("cmd" => "moveNext", "text" => $lng->txt("survey_dnd_move_next"));
                                }
                                if($a_has_previous_page)
                                {
                                        $menu[] = array("cmd" => "movePrevious", "text" => $lng->txt("survey_dnd_move_previous"));
                                }
                                
                                $menu[] = array("cmd" => "deleteQuestion", "text" => $lng->txt("delete"));
                                
                                // heading
                                if($question["heading"])
                                {
                                        $menu[] = array("cmd" => "editHeading", "text" => $lng->txt("survey_edit_heading"));
                                        $menu[] = array("cmd" => "deleteHeading", "text" => $lng->txt("survey_delete_heading"));
                                }
                                else
                                {
                                        $menu[] = array("cmd" => "addHeading", "text" => $lng->txt("add_heading"));
                                }
                        }
 
                        if($first_question["questionblock_show_questiontext"])
                        {
                                $question_title_status = $lng->txt("survey_question_text_visible");
                        }
                        else
                        {
                                $question_title_status = $lng->txt("survey_question_text_hidden");
                        }
 
                        $this->renderPageNode($ttpl, "question", $question["question_id"], $question_form, $menu,
                                false, $question["title"], $question_title_status, $question["heading"]);
 
                        $ilCtrl->setParameter($this, "eqid", "");
                }
 
 
                // last position (no question id)
 
                $menu = array();
 
                if(!$a_readonly)
                {
                        if(!$has_clipboard)
                        {
                                foreach($questiontypes as $trans => $item)
                                {
                                        $menu[] = array("cmd"=> "addQuestion_".$item["questiontype_id"],
                                                "text"=> sprintf($lng->txt("svy_page_add_question"), $trans));
                                }
                                
                                if($this->object->isPoolActive())
                                {
                                        $menu[] = array("cmd"=> "addPoolQuestion",
                                                "text"=> $lng->txt("browse_for_questions"));
                                }
                        }
                        else 
                        {
                                $menu[] = array("cmd" => "paste", "text" => $lng->txt("survey_dnd_paste"));
                        }
                }
 
                $this->renderPageNode($ttpl, "page", "end", null, $menu, true);
 
                return $ttpl->get();
        }
 
        function renderPageNode(ilTemplate $a_tpl, $a_type, $a_id, $a_content = null, array $a_menu = null, $a_spacer = false, $a_subtitle = false, $a_status = false, $a_heading = false)
        {
                global $ilCtrl, $lng;
 
                $node_id = $a_type."_".$a_id;
                
                if($a_spacer)
                {                       
                        if($a_menu)     
                        {
                                // drop area menu
                                foreach($a_menu as $mcnt => $menu_item)
                                {                               
                                        $ilCtrl->setParameter($this, "il_hform_node", $node_id);        
                                        $ilCtrl->setParameter($this, "il_hform_subcmd", $menu_item["cmd"]);     
                                        $url = $ilCtrl->getLinkTarget($this, "renderPage");
                                        $ilCtrl->setParameter($this, "il_hform_subcmd", "");    
                                        $ilCtrl->setParameter($this, "il_hform_node", "");      
 
                                        $a_tpl->setCurrentBlock("menu_cmd");
                                        $a_tpl->setVariable("TXT_MENU_CMD", $menu_item["text"]);
                                        $a_tpl->setVariable("URL_MENU_CMD", $url);                                      
                                        $a_tpl->parseCurrentBlock();
                                }                       
                        }
 
                        $a_tpl->setCurrentBlock("drop_area");
                        include_once "Services/UIComponent/Glyph/classes/class.ilGlyphGUI.php";
                        $a_tpl->setVariable("ICON_ADD", ilGlyphGUI::get(ilGlyphGUI::ADD));
                        $a_tpl->setVariable("DROP_ID", $a_id);
                        $a_tpl->parseCurrentBlock();
                }
                else if($a_menu)                        
                {               
                        // question action menu
                        foreach($a_menu as $mcnt => $menu_item)
                        {                               
                                $ilCtrl->setParameter($this, "il_hform_node", $node_id);        
                                $ilCtrl->setParameter($this, "il_hform_subcmd", $menu_item["cmd"]);     
                                $url = $ilCtrl->getLinkTarget($this, "renderPage");
                                $ilCtrl->setParameter($this, "il_hform_subcmd", "");    
                                $ilCtrl->setParameter($this, "il_hform_node", "");      
 
                                $a_tpl->setCurrentBlock("action_cmd");
                                $a_tpl->setVariable("TXT_ACTION_CMD", $menu_item["text"]);
                                $a_tpl->setVariable("URL_ACTION_CMD", $url);                                    
                                $a_tpl->parseCurrentBlock();
                        }               
                }       
                
                // add heading to content
                if($a_content !== null &&
                        $a_type == "question" &&
                        $a_heading)
                {                       
                        $a_content = "<div class=\"questionheading\">".$a_heading."</div>".
                                $a_content;             
                }
                
                if($a_menu)
                {
                        $a_tpl->setVariable("TXT_NODE_CONTENT_ACTIONS", $a_content);
                }
                else
                {
                        $a_tpl->setVariable("TXT_NODE_CONTENT_NO_ACTIONS", $a_content);
                }
 
                if($a_content !== null)
                {
                        $drag = "";
                        $selectable = false;
                        switch($a_type)
                        {
                                case "block":
                                        $caption = $lng->txt("questionblock");
                                        break;
 
                                case "question":                                        
                                        $caption = $lng->txt("question").": ".$a_subtitle;
                                        $drag = "_drag";
                                        $selectable = true;
                                        break;
 
                                case "heading":
                                        $caption = $lng->txt("heading");
                                        break;
 
                                default:
                                        return;
                        }
 
                        if($a_status)
                        {
                                $caption .= " (".$a_status.")";
                        }
 
                        $a_tpl->setCurrentBlock("list_item");
                        $a_tpl->setVariable("NODE_ID", $node_id);
                        $a_tpl->setVariable("NODE_DRAG", $drag);
                        $a_tpl->setVariable("TXT_NODE_TYPE", $caption);         
                        if($selectable)
                        {
                                $a_tpl->setVariable("SELECTABLE", " selectable");
                        }
                        $a_tpl->parseCurrentBlock();
                }
                
                $a_tpl->touchBlock("element");
        }
 
        public function getAutoBlockTitle()
        {
                global $lng;
 
                return $lng->txt("survey_auto_block_title");
        }
        
        public function addPoolQuestion($pos, $node)
        {       
                global $ilCtrl, $ilUser;
                
                if($node == "page_end")
                {
                        $pos = $this->object->getSurveyPages();
                        $pos = array_pop($pos[$this->current_page-1]);
                        $pos = $pos["question_id"]."a";
                }
                else
                {
                        $pos = $pos."b";
                }               
                
                $ilCtrl->setParameter($this->editor_gui, "pgov", $this->current_page);
                $ilCtrl->setParameter($this->editor_gui, "pgov_pos", $pos);
                
                $cmd = ($ilUser->getPref('svy_insert_type') == 1 || strlen($ilUser->getPref('svy_insert_type')) == 0) ? 'browseForQuestions' : 'browseForQuestionblocks';
                $ilCtrl->redirect($this->editor_gui, $cmd);
        }
}
 
?>