class.ilObjExerciseGUI.php

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<?php
 
/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */
 
require_once "./Services/Object/classes/class.ilObjectGUI.php";
 
class ilObjExerciseGUI extends ilObjectGUI
{
        function __construct($a_data,$a_id,$a_call_by_reference,$a_prepare_output = true)
        {
                global $lng;
                
                $this->type = "exc";
                parent::__construct($a_data,$a_id,$a_call_by_reference,false);
                
                $lng->loadLanguageModule("exercise");
                $lng->loadLanguageModule("exc");
                $this->ctrl->saveParameter($this, "ass_id");
 
                include_once("./Modules/Exercise/classes/class.ilExAssignment.php");
                if ($_REQUEST["ass_id"] > 0 && is_object($this->object) && ilExAssignment::lookupExerciseId($_REQUEST["ass_id"]) == $this->object->getId())
                {
                        $this->ass = new ilExAssignment((int) $_REQUEST["ass_id"]);
                }
                else if ($_REQUEST["ass_id"] > 0)
                {
                        include_once("./Modules/Exercise/exceptions/class.ilExerciseException.php");
                        throw new ilExerciseException("Assignment ID does not match Exercise.");
                }
        }
 
        function executeCommand()
        {
                global $ilUser,$ilCtrl, $ilTabs, $lng;
  
                $next_class = $this->ctrl->getNextClass($this);
                $cmd = $this->ctrl->getCmd();
                $this->prepareOutput();
  
//echo "-".$next_class."-".$cmd."-"; exit;
                switch($next_class)
                {
                        case "ilinfoscreengui":
                                $ilTabs->activateTab("info");
                                $this->infoScreen();    // forwards command
                                break;
 
                        case 'ilpermissiongui':
                                $ilTabs->activateTab("permissions");
                                include_once("Services/AccessControl/classes/class.ilPermissionGUI.php");
                                $perm_gui = new ilPermissionGUI($this);
                                $ret =& $this->ctrl->forwardCommand($perm_gui);
                        break;
        
                        case "illearningprogressgui":
                                $ilTabs->activateTab("learning_progress");
                                include_once './Services/Tracking/classes/class.ilLearningProgressGUI.php';
        
                                $new_gui = new ilLearningProgressGUI(ilLearningProgressGUI::LP_CONTEXT_REPOSITORY,
                                        $this->object->getRefId(),
                                        $_GET['user_id'] ? $_GET['user_id'] : $ilUser->getId());
                                $this->ctrl->forwardCommand($new_gui);
                                $this->tabs_gui->setTabActive('learning_progress');
                        break;
                        
                        case 'ilobjectcopygui':
                                $ilCtrl->saveParameter($this, 'new_type');
                                $ilCtrl->setReturnByClass(get_class($this),'create');
 
                                include_once './Services/Object/classes/class.ilObjectCopyGUI.php';
                                $cp = new ilObjectCopyGUI($this);
                                $cp->setType('exc');
                                $this->ctrl->forwardCommand($cp);
                                break;
 
                        case "ilexportgui":
                                $ilTabs->activateTab("export");
                                include_once("./Services/Export/classes/class.ilExportGUI.php");
                                $exp_gui = new ilExportGUI($this);
                                $exp_gui->addFormat("xml");
                                $ret = $this->ctrl->forwardCommand($exp_gui);
//                              $this->tpl->show();
                                break;
                        
                        case "ilcommonactiondispatchergui":
                                include_once("Services/Object/classes/class.ilCommonActionDispatcherGUI.php");
                                $gui = ilCommonActionDispatcherGUI::getInstanceFromAjaxCall();
                                $this->ctrl->forwardCommand($gui);
                                break;
                        
                        case "ilcertificategui":
                                $this->setSettingsSubTabs();
                                $this->tabs_gui->activateTab("settings");
                                $this->tabs_gui->activateSubTab("certificate");
                                include_once "./Services/Certificate/classes/class.ilCertificateGUI.php";
                                include_once "./Modules/Exercise/classes/class.ilExerciseCertificateAdapter.php";
                                $output_gui = new ilCertificateGUI(new ilExerciseCertificateAdapter($this->object));
                                $this->ctrl->forwardCommand($output_gui);
                                break;
                        
                        case "ilexassignmenteditorgui":
                                $this->checkPermission("write");
                                $ilTabs->activateTab("content");
                                $this->addContentSubTabs("list_assignments");
                                include_once("./Modules/Exercise/classes/class.ilExAssignmentEditorGUI.php");
                                $ass_gui = new ilExAssignmentEditorGUI($this->object->getId(), $this->object->isCompletionBySubmissionEnabled(), $this->ass);
                                $this->ctrl->forwardCommand($ass_gui);
                                break;
                        
                        case "ilexsubmissiongui":
                                $this->checkPermission("read");
                                $ilTabs->activateTab("content");
                                $this->addContentSubTabs("content");
                                $this->ctrl->setReturn($this, "showOverview");
                                include_once("./Modules/Exercise/classes/class.ilExSubmissionGUI.php");
                                $sub_gui = new ilExSubmissionGUI($this->object, $this->ass, (int)$_REQUEST["member_id"]);
                                $this->ctrl->forwardCommand($sub_gui);
                                break;
                        
                        case "ilexercisemanagementgui":
                                $this->checkPermission("write");
                                $ilTabs->activateTab("grades");                         
                                include_once("./Modules/Exercise/classes/class.ilExerciseManagementGUI.php");
                                $mgmt_gui = new ilExerciseManagementGUI($this->object, $this->ass);
                                $this->ctrl->forwardCommand($mgmt_gui);
                                break;
                        
                        case "ilexccriteriacataloguegui":
                                $this->checkPermission("write");
                                $ilTabs->activateTab("settings");       
                                $this->setSettingsSubTabs();
                                $ilTabs->activateSubTab("crit");
                                include_once("./Modules/Exercise/classes/class.ilExcCriteriaCatalogueGUI.php");
                                $crit_gui = new ilExcCriteriaCatalogueGUI($this->object);
                                $this->ctrl->forwardCommand($crit_gui);
                                break;
                                
                        default:                                                
                                if(!$cmd)
                                {
                                        $cmd = "infoScreen";
                                }
        
                                $cmd .= "Object";
        
                                $this->$cmd();
        
                        break;
                }
                
                $this->addHeaderAction();
  
                return true;
        }
 
        function viewObject()
        {
                $this->infoScreenObject();
        }
        
        protected function afterSave(ilObject $a_new_object)
        {
                global $ilCtrl;
                
                $a_new_object->saveData();
                
                ilUtil::sendSuccess($this->lng->txt("exc_added"), true);
                
                $ilCtrl->setParameterByClass("ilExAssignmentEditorGUI", "ref_id", $a_new_object->getRefId());
                $ilCtrl->redirectByClass("ilExAssignmentEditorGUI", "addAssignment");
        }
 
        protected function listAssignmentsObject()
        {
                global $ilCtrl;
                
                $this->checkPermissionBool("write");
                
                // #16587
                $ilCtrl->redirectByClass("ilExAssignmentEditorGUI", "listAssignments");
        }
        
        protected function initEditCustomForm(ilPropertyFormGUI $a_form)
        {
                $a_form->setTitle($this->lng->txt("exc_edit_exercise"));
 
                $section = new ilFormSectionHeaderGUI();
                $section->setTitle($this->lng->txt('exc_passing_exc'));
                $a_form->addItem($section);
 
                // pass mode
                $radg = new ilRadioGroupInputGUI($this->lng->txt("exc_pass_mode"), "pass_mode");
        
                        $op1 = new ilRadioOption($this->lng->txt("exc_pass_all"), "all",
                                $this->lng->txt("exc_pass_all_info"));
                        $radg->addOption($op1);
                        $op2 = new ilRadioOption($this->lng->txt("exc_pass_minimum_nr"), "nr",
                                $this->lng->txt("exc_pass_minimum_nr_info"));
                        $radg->addOption($op2);
 
                        // minimum number of assignments to pass
                        $ni = new ilNumberInputGUI($this->lng->txt("exc_min_nr"), "pass_nr");
                        $ni->setSize(4);
                        $ni->setMaxLength(4);
                        $ni->setRequired(true);
                        include_once("./Modules/Exercise/classes/class.ilExAssignment.php");
                        $mand = ilExAssignment::countMandatory($this->object->getId());
                        $min = max($mand, 1);
                        $ni->setMinValue($min, true);
                        $ni->setInfo($this->lng->txt("exc_min_nr_info"));
                        $op2->addSubItem($ni);
 
                $a_form->addItem($radg);
 
                // completion by submission
                $subcompl = new ilRadioGroupInputGUI($this->lng->txt("exc_passed_status_determination"), "completion_by_submission");
                        $op1 = new ilRadioOption($this->lng->txt("exc_completion_by_tutor"), 0, "");
                        $subcompl->addOption($op1);
                        $op2 = new ilRadioOption($this->lng->txt("exc_completion_by_submission"), 1,$this->lng->txt("exc_completion_by_submission_info"));
                        $subcompl->addOption($op2);
                $a_form->addItem($subcompl);
 
                /*$subcompl = new ilCheckboxInputGUI($this->lng->txt('exc_completion_by_submission'), 'completion_by_submission');
                $subcompl->setInfo($this->lng->txt('exc_completion_by_submission_info'));
                $subcompl->setValue(1);
                $a_form->addItem($subcompl);*/
 
                $section = new ilFormSectionHeaderGUI();
                $section->setTitle($this->lng->txt('exc_publishing'));
                $a_form->addItem($section);
 
                // show submissions
                $cb = new ilCheckboxInputGUI($this->lng->txt("exc_show_submissions"), "show_submissions");
                $cb->setInfo($this->lng->txt("exc_show_submissions_info"));
                $a_form->addItem($cb);
                
                $section = new ilFormSectionHeaderGUI();
                $section->setTitle($this->lng->txt('exc_notification'));
                $a_form->addItem($section);
 
                // submission notifications
                $cbox = new ilCheckboxInputGUI($this->lng->txt("exc_submission_notification"), "notification");
                $cbox->setInfo($this->lng->txt("exc_submission_notification_info"));
                $a_form->addItem($cbox);                
                
                
                // feedback settings
                
                $section = new ilFormSectionHeaderGUI();
                $section->setTitle($this->lng->txt('exc_feedback'));
                $a_form->addItem($section);
                
                $fdb = new ilCheckboxGroupInputGUI($this->lng->txt("exc_settings_feedback"), "tfeedback");
                $a_form->addItem($fdb);
                
                $option = new ilCheckboxOption($this->lng->txt("exc_settings_feedback_mail"), ilObjExercise::TUTOR_FEEDBACK_MAIL);
                $option->setInfo($this->lng->txt("exc_settings_feedback_mail_info"));
                $fdb->addOption($option);
                $option = new ilCheckboxOption($this->lng->txt("exc_settings_feedback_file"), ilObjExercise::TUTOR_FEEDBACK_FILE);
                $option->setInfo($this->lng->txt("exc_settings_feedback_file_info"));
                $fdb->addOption($option);
                $option = new ilCheckboxOption($this->lng->txt("exc_settings_feedback_text"), ilObjExercise::TUTOR_FEEDBACK_TEXT);
                $option->setInfo($this->lng->txt("exc_settings_feedback_text_info"));
                $fdb->addOption($option);               
        }
        
        protected function getEditFormCustomValues(array &$a_values)
        {
                global $ilUser;
 
                $a_values["desc"] = $this->object->getLongDescription();
                $a_values["show_submissions"] = $this->object->getShowSubmissions();
                $a_values["pass_mode"] = $this->object->getPassMode();
                if ($a_values["pass_mode"] == "nr")
                {
                        $a_values["pass_nr"] = $this->object->getPassNr();
                }
                
                include_once "./Services/Notification/classes/class.ilNotification.php";
                $a_values["notification"] = ilNotification::hasNotification(
                                ilNotification::TYPE_EXERCISE_SUBMISSION, $ilUser->getId(),
                                $this->object->getId());
                                
                $a_values['completion_by_submission'] = (int) $this->object->isCompletionBySubmissionEnabled();
                
                $tfeedback = array();
                if($this->object->hasTutorFeedbackMail())
                {
                        $tfeedback[] = ilObjExercise::TUTOR_FEEDBACK_MAIL;
                }
                if($this->object->hasTutorFeedbackText())
                {
                        $tfeedback[] = ilObjExercise::TUTOR_FEEDBACK_TEXT;
                }
                if($this->object->hasTutorFeedbackFile())
                {
                        $tfeedback[] = ilObjExercise::TUTOR_FEEDBACK_FILE;
                }               
                $a_values['tfeedback'] = $tfeedback;                    
        }
 
        protected function updateCustom(ilPropertyFormGUI $a_form)
        {
                global $ilUser;
                $this->object->setShowSubmissions($a_form->getInput("show_submissions"));
                $this->object->setPassMode($a_form->getInput("pass_mode"));             
                if ($this->object->getPassMode() == "nr")
                {
                        $this->object->setPassNr($a_form->getInput("pass_nr"));
                }
                
                $this->object->setCompletionBySubmission($a_form->getInput('completion_by_submission') == 1 ? true : false);
                
                $feedback = $a_form->getInput("tfeedback");
                $this->object->setTutorFeedback(is_array($feedback)
                        ? array_sum($feedback)
                        : null);
                
                include_once "./Services/Notification/classes/class.ilNotification.php";
                ilNotification::setNotification(ilNotification::TYPE_EXERCISE_SUBMISSION,
                        $ilUser->getId(), $this->object->getId(),
                        (bool)$a_form->getInput("notification"));
        }
  
        function addContentSubTabs($a_activate)
        {
                global $ilTabs, $lng, $ilCtrl;
                
                $ilTabs->addSubTab("content", $lng->txt("view"),
                        $ilCtrl->getLinkTarget($this, "showOverview"));
                if ($this->checkPermissionBool("write"))
                {
                        $ilTabs->addSubTab("list_assignments", $lng->txt("edit"),
                                $ilCtrl->getLinkTargetByClass("ilExAssignmentEditorGUI", "listAssignments"));
                }
                $ilTabs->activateSubTab($a_activate);
        }
 
        function getTabs()
        {
                global $lng, $ilHelp;
  
                $ilHelp->setScreenIdComponent("exc");
                
                if ($this->checkPermissionBool("read"))
                {
                        $this->tabs_gui->addTab("content",
                                $lng->txt("exc_assignments"),
                                $this->ctrl->getLinkTarget($this, "showOverview"));
                }
 
                $next_class = strtolower($this->ctrl->getNextClass());
                if ($this->checkPermissionBool("visible"))
                {
                        $this->tabs_gui->addTab("info",
                                $lng->txt("info_short"),
                                $this->ctrl->getLinkTargetByClass("ilinfoscreengui", "showSummary"));
                }
 
                // edit properties
                if ($this->checkPermissionBool("write"))
                {
                        /*$tabs_gui->addTab("assignments",
                                $lng->txt("exc_edit_assignments"),
                                $this->ctrl->getLinkTarget($this, 'listAssignments'));*/
                        
                        $this->tabs_gui->addTab("settings",
                                $lng->txt("settings"),
                                $this->ctrl->getLinkTarget($this, 'edit'));
                        
                        $this->tabs_gui->addTab("grades",
                                $lng->txt("exc_submissions_and_grades"),
                                $this->ctrl->getLinkTargetByClass("ilexercisemanagementgui", "members"));
                }
 
                // learning progress
                $save_sort_order = $_GET["sort_order"];         // hack, because exercise sort parameters
                $save_sort_by = $_GET["sort_by"];                       // must not be forwarded to learning progress
                $save_offset = $_GET["offset"];
                $_GET["offset"] = $_GET["sort_by"] = $_GET["sort_order"] = "";
                
                include_once './Services/Tracking/classes/class.ilLearningProgressAccess.php';
                if(ilLearningProgressAccess::checkAccess($this->object->getRefId()))
                {
                        $this->tabs_gui->addTab('learning_progress',
                                $lng->txt('learning_progress'),
                                $this->ctrl->getLinkTargetByClass(array('ilobjexercisegui','illearningprogressgui'),''));
                }
 
                $_GET["sort_order"] = $save_sort_order;         // hack, part ii
                $_GET["sort_by"] = $save_sort_by;
                $_GET["offset"] = $save_offset;
 
                // export
                if ($this->checkPermissionBool("write"))
                {
                        $this->tabs_gui->addTab("export",
                                $lng->txt("export"),
                                $this->ctrl->getLinkTargetByClass("ilexportgui", ""));
                }
 
 
                // permissions
                if ($this->checkPermissionBool("edit_permission"))
                {
                        $this->tabs_gui->addTab('permissions',
                                $lng->txt("perm_settings"),
                                $this->ctrl->getLinkTargetByClass(array(get_class($this),'ilpermissiongui'), "perm"));
                }
        }
        
        function infoScreenObject()
        {
                $this->ctrl->setCmd("showSummary");
                $this->ctrl->setCmdClass("ilinfoscreengui");
                $this->infoScreen();
        }
 
        function infoScreen()
        {
                global $ilUser, $ilTabs, $lng;
                
                $ilTabs->activateTab("info");
 
                $this->checkPermission("visible");
 
                include_once("./Services/InfoScreen/classes/class.ilInfoScreenGUI.php");
                $info = new ilInfoScreenGUI($this);
                
                $info->enablePrivateNotes();
                
                $info->enableNews();
                if ($this->checkPermissionBool("write"))
                {
                        $info->enableNewsEditing();
                        $info->setBlockProperty("news", "settings", true);
                }
                
                // standard meta data
                //$info->addMetaDataSections($this->object->getId(),0, $this->object->getType());
 
                // instructions
                $info->addSection($this->lng->txt("exc_overview"));
                include_once("./Modules/Exercise/classes/class.ilExAssignment.php");
                $ass = ilExAssignment::getAssignmentDataOfExercise($this->object->getId());
                $cnt = 0;
                $mcnt = 0;
                foreach ($ass as $a)
                {
                        $cnt++;
                        if ($a["mandatory"])
                        {
                                $mcnt++;
                        }
                }
                $info->addProperty($lng->txt("exc_assignments"), $cnt);
                $info->addProperty($lng->txt("exc_mandatory"), $mcnt);
                if ($this->object->getPassMode() != "nr")
                {
                        $info->addProperty($lng->txt("exc_pass_mode"),
                                $lng->txt("exc_msg_all_mandatory_ass"));
                }
                else
                {
                        $info->addProperty($lng->txt("exc_pass_mode"),
                                sprintf($lng->txt("exc_msg_min_number_ass"), $this->object->getPassNr()));
                }
 
                // feedback from tutor
                include_once("Services/Tracking/classes/class.ilLPMarks.php");
                if ($this->checkPermissionBool("read"))
                {
                        $lpcomment = ilLPMarks::_lookupComment($ilUser->getId(), $this->object->getId());
                        $mark = ilLPMarks::_lookupMark($ilUser->getId(), $this->object->getId());
                        //$status = ilExerciseMembers::_lookupStatus($this->object->getId(), $ilUser->getId());
                        $st = $this->object->determinStatusOfUser($ilUser->getId());
                        $status = $st["overall_status"];
                        if ($lpcomment != "" || $mark != "" || $status != "notgraded")
                        {
                                $info->addSection($this->lng->txt("exc_feedback_from_tutor"));
                                if ($lpcomment != "")
                                {
                                        $info->addProperty($this->lng->txt("exc_comment"),
                                                $lpcomment);
                                }
                                if ($mark != "")
                                {
                                        $info->addProperty($this->lng->txt("exc_mark"),
                                                $mark);
                                }
 
                                //if ($status == "") 
                                //{
                                //  $info->addProperty($this->lng->txt("status"),
                                //              $this->lng->txt("message_no_delivered_files"));                         
                                //}
                                //else
                                if ($status != "notgraded")
                                {
                                        $img = '<img src="'.ilUtil::getImagePath("scorm/".$status.".svg").'" '.
                                                ' alt="'.$lng->txt("exc_".$status).'" title="'.$lng->txt("exc_".$status).
                                                '" />';
 
                                        $add = "";
                                        if ($st["failed_a_mandatory"])
                                        {
                                                $add = " (".$lng->txt("exc_msg_failed_mandatory").")";
                                        }
                                        else if ($status == "failed")
                                        {
                                                $add = " (".$lng->txt("exc_msg_missed_minimum_number").")";
                                        }
                                        $info->addProperty($this->lng->txt("status"),
                                                $img." ".$this->lng->txt("exc_".$status).$add);
                                }
                        }
                }
                
                // forward the command
                $this->ctrl->forwardCommand($info);
        }
        
        function editObject() 
        {
                $this->setSettingsSubTabs();
                $this->tabs_gui->activateSubTab("edit");
                return parent::editObject();
        }
        
        protected function setSettingsSubTabs()
        {
                $this->tabs_gui->addSubTab("edit",
                        $this->lng->txt("general_settings"),
                        $this->ctrl->getLinkTarget($this, "edit"));
                
                $this->tabs_gui->addSubTab("crit",
                        $this->lng->txt("exc_criteria_catalogues"),
                        $this->ctrl->getLinkTargetByClass("ilexccriteriacataloguegui", ""));
                
                include_once "Services/Certificate/classes/class.ilCertificate.php";
                if(ilCertificate::isActive())
                {
                        $this->tabs_gui->addSubTab("certificate",
                                $this->lng->txt("certificate"),
                                $this->ctrl->getLinkTarget($this, "certificate"));              
                }
        }
 
        public static function _goto($a_target, $a_raw)
        {
                global $lng, $ilAccess;
 
                $ass_id = null;
                $parts = explode("_", $a_raw);
                if(sizeof($parts) == 2)
                {
                        $ass_id = (int)$parts[1];
                }
                
                if ($ilAccess->checkAccess("read", "", $a_target))
                {
                        if($ass_id)
                        {
                                $_GET["ass_id_goto"] = $ass_id;
                        }
                        $_GET["ref_id"] = $a_target;
                        $_GET["cmd"] = "showOverview";
                        $_GET["baseClass"] = "ilExerciseHandlerGUI";
                        include("ilias.php");
                        exit;
                }
                else if ($ilAccess->checkAccess("visible", "", $a_target))
                {
                        $_GET["ref_id"] = $a_target;
                        $_GET["cmd"] = "infoScreen";
                        $_GET["baseClass"] = "ilExerciseHandlerGUI";
                        include("ilias.php");
                        exit;
                }
                else if ($ilAccess->checkAccess("read", "", ROOT_FOLDER_ID))
                {
                        ilUtil::sendFailure(sprintf($lng->txt("msg_no_perm_read_item"),
                                ilObject::_lookupTitle(ilObject::_lookupObjId($a_target))), true);
                        ilObjectGUI::_gotoRepositoryRoot();
                }               
        }               
 
        function addLocatorItems()
        {
                global $ilLocator;
                
                if (is_object($this->object))
                {
                        // #17955
                        $ilLocator->addItem($this->object->getTitle(), $this->ctrl->getLinkTarget($this, "showOverview"), "", $_GET["ref_id"]);
                }
        }
        
        
 
        function showOverviewObject()
        {
                global $tpl, $ilTabs, $ilUser, $ilToolbar;
                
                $this->checkPermission("read");
                
                include_once("./Services/Tracking/classes/class.ilLearningProgress.php");
                ilLearningProgress::_tracProgress($ilUser->getId(),$this->object->getId(),
                        $this->object->getRefId(), 'exc');
                
                $ilTabs->activateTab("content");
                $this->addContentSubTabs("content");
                
                // show certificate?
                if($this->object->hasUserCertificate($ilUser->getId()))
                {                                       
                        include_once "./Modules/Exercise/classes/class.ilExerciseCertificateAdapter.php";
                        include_once "./Services/Certificate/classes/class.ilCertificate.php";
                        $adapter = new ilExerciseCertificateAdapter($this->object);
                        if(ilCertificate::_isComplete($adapter))
                        {
                                $ilToolbar->addButton($this->lng->txt("certificate"),
                                        $this->ctrl->getLinkTarget($this, "outCertificate"));
                        }
                }       
                
                include_once("./Modules/Exercise/classes/class.ilExAssignmentGUI.php");
                $ass_gui = new ilExAssignmentGUI($this->object);
                                
                include_once("./Modules/Exercise/classes/class.ilExAssignment.php");
                include_once("./Services/Accordion/classes/class.ilAccordionGUI.php");
                $acc = new ilAccordionGUI();
                $acc->setId("exc_ow_".$this->object->getId());
 
                $ass_data = ilExAssignment::getInstancesByExercise($this->object->getId());
                foreach ($ass_data as $ass)
                {
                        // incoming assignment deeplink
                        $force_open = false;
                        if(isset($_GET["ass_id_goto"]) &&
                                (int)$_GET["ass_id_goto"] == $ass->getId())
                        {
                                $force_open = true;
                        }       
                        
                        $acc->addItem($ass_gui->getOverviewHeader($ass),
                                $ass_gui->getOverviewBody($ass),
                                $force_open);                                                                           
                }
                
                if (count($ass_data) < 2)
                {
                        $acc->setBehaviour("FirstOpen");
                }
                else
                {
                        $acc->setUseSessionStorage(true);
                }
                
                $tpl->setContent($acc->getHTML());
        }
        
        function certificateObject()
        {
                $this->setSettingsSubTabs();
                $this->tabs_gui->activateTab("settings");
                $this->tabs_gui->activateSubTab("certificate");
                
                include_once "./Services/Certificate/classes/class.ilCertificateGUI.php";
                include_once "./Modules/Exercise/classes/class.ilExerciseCertificateAdapter.php";
                $output_gui = new ilCertificateGUI(new ilExerciseCertificateAdapter($this->object));
                $output_gui->certificateEditor();                               
        }
        
        function outCertificateObject()
        {
                global $ilUser;
        
                if($this->object->hasUserCertificate($ilUser->getId()))
                {       
                        ilUtil::sendFailure($this->lng->txt("msg_failed"));
                        $this->showOverviewObject();                    
                }
                
                include_once "./Services/Certificate/classes/class.ilCertificate.php";
                include_once "./Modules/Exercise/classes/class.ilExerciseCertificateAdapter.php";
                $certificate = new ilCertificate(new ilExerciseCertificateAdapter($this->object));
                $certificate->outCertificate(array("user_id" => $ilUser->getId()));                                     
        }               
        
}
 
?>