class.ilObjWikiGUI.php

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<?php

/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

use \ILIAS\Wiki\Export;

class ilObjWikiGUI extends ilObjectGUI
{
    protected $tabs;

    protected $error;

    protected $help;


    protected $log;

    protected $tool_context;

    protected $ui;

    protected $req_with_comments = false;

    public function __construct($a_data, $a_id, $a_call_by_reference, $a_prepare_output = true)
    {
        global $DIC;

        $this->ctrl = $DIC->ctrl();
        $this->lng = $DIC->language();
        $this->user = $DIC->user();
        $this->tpl = $DIC["tpl"];
        $this->tabs = $DIC->tabs();
        $this->access = $DIC->access();
        $this->error = $DIC["ilErr"];
        $this->settings = $DIC->settings();
        $this->help = $DIC["ilHelp"];
        $this->locator = $DIC["ilLocator"];
        $this->toolbar = $DIC->toolbar();
        $ilCtrl = $DIC->ctrl();
        $lng = $DIC->language();
        
        $this->type = "wiki";

        $this->log = ilLoggerFactory::getLogger('wiki');

        $this->tool_context = $DIC->globalScreen()->tool()->context();
        $this->ui = $DIC->ui();

        parent::__construct($a_data, $a_id, $a_call_by_reference, $a_prepare_output);
        $lng->loadLanguageModule("obj");
        $lng->loadLanguageModule("wiki");
        
        if ($_GET["page"] != "") {
            $ilCtrl->setParameter($this, "page", ilWikiUtil::makeUrlTitle($_GET["page"]));
        }

        $this->req_with_comments = (bool) $_GET["with_comments"];
    }
    
    public function executeCommand()
    {
        $ilUser = $this->user;
        $ilCtrl = $this->ctrl;
        $tpl = $this->tpl;
        $ilTabs = $this->tabs;
        $ilAccess = $this->access;
  
        $next_class = $this->ctrl->getNextClass($this);
        $cmd = $this->ctrl->getCmd();

        $this->triggerAssignmentTool();

        $this->prepareOutput();
        
        // see ilWikiPageGUI::printViewOrderList()
        // printView() and pdfExport() cannot be in ilWikiPageGUI because of stylesheet confusion
        if ($cmd == "printView" || $cmd == "pdfExport") {
            $next_class = null;
        }
    
        switch ($next_class) {
            case "ilinfoscreengui":
                $this->checkPermission("visible");
                $this->addHeaderAction();
                $this->infoScreen();    // forwards command
                break;

            case 'ilpermissiongui':
                $this->addHeaderAction();
                $ilTabs->activateTab("perm_settings");
                include_once("Services/AccessControl/classes/class.ilPermissionGUI.php");
                $perm_gui = new ilPermissionGUI($this);
                $ret = $this->ctrl->forwardCommand($perm_gui);
                break;

            case 'ilsettingspermissiongui':
                $this->checkPermission("write");
                $this->addHeaderAction();
                $ilTabs->activateTab("settings");
                $this->setSettingsSubTabs("permission_settings");
                include_once("Services/AccessControl/classes/class.ilSettingsPermissionGUI.php");
                $perm_gui = new ilSettingsPermissionGUI($this);
                $perm_gui->setPermissions(array("edit_wiki_navigation", "delete_wiki_pages", "activate_wiki_protection",
                    "wiki_html_export"));
                $perm_gui->setRoleRequiredPermissions(array("edit_content"));
                $perm_gui->setRoleProhibitedPermissions(array("write"));
                $ret = $this->ctrl->forwardCommand($perm_gui);
                break;

            case 'ilwikipagegui':
                $this->checkPermission("read");
                include_once("./Modules/Wiki/classes/class.ilWikiPageGUI.php");
                $wpage_gui = ilWikiPageGUI::getGUIForTitle(
                    $this->object->getId(),
                    ilWikiUtil::makeDbTitle($_GET["page"]),
                    $_GET["old_nr"],
                    $this->object->getRefId()
                );
                include_once("./Services/Style/Content/classes/class.ilObjStyleSheet.php");
                $wpage_gui->setStyleId(ilObjStyleSheet::getEffectiveContentStyleId(
                    $this->object->getStyleSheetId(),
                    "wiki"
                ));
                $this->setContentStyleSheet();
                if (!$ilAccess->checkAccess("write", "", $this->object->getRefId()) &&
                    (
                        !$ilAccess->checkAccess("edit_content", "", $this->object->getRefId()) ||
                        $wpage_gui->getPageObject()->getBlocked()
                    )) {
                    $wpage_gui->setEnableEditing(false);
                }
                
                // alter title and description
//                              $tpl->setTitle($wpage_gui->getPageObject()->getTitle());
//                              $tpl->setDescription($this->object->getTitle());
                if ($ilAccess->checkAccess("write", "", $this->object->getRefId())) {
                    $wpage_gui->activateMetaDataEditor($this->object, "wpg", $wpage_gui->getId());
                }
                
                $ret = $this->ctrl->forwardCommand($wpage_gui);
                if ($ret != "") {
                    $tpl->setContent($ret);
                }
                break;

            case 'ilobjectcopygui':
                include_once './Services/Object/classes/class.ilObjectCopyGUI.php';
                $cp = new ilObjectCopyGUI($this);
                $cp->setType('wiki');
                $this->ctrl->forwardCommand($cp);
                break;

            case 'ilpublicuserprofilegui':
                require_once './Services/User/classes/class.ilPublicUserProfileGUI.php';
                $profile_gui = new ilPublicUserProfileGUI($_GET["user"]);
                $ret = $this->ctrl->forwardCommand($profile_gui);
                $tpl->setContent($ret);
                break;
                
            case "ilobjstylesheetgui":
                include_once("./Services/Style/Content/classes/class.ilObjStyleSheetGUI.php");
                $this->ctrl->setReturn($this, "editStyleProperties");
                $style_gui = new ilObjStyleSheetGUI("", $this->object->getStyleSheetId(), false, false);
                $style_gui->omitLocator();
                if ($cmd == "create" || $_GET["new_type"] == "sty") {
                    $style_gui->setCreationMode(true);
                }

                if ($cmd == "confirmedDelete") {
                    $this->object->setStyleSheetId(0);
                    $this->object->update();
                }

                $ret = $this->ctrl->forwardCommand($style_gui);

                if ($cmd == "save" || $cmd == "copyStyle" || $cmd == "importStyle") {
                    $style_id = $ret;
                    $this->object->setStyleSheetId($style_id);
                    $this->object->update();
                    $this->ctrl->redirectByClass("ilobjstylesheetgui", "edit");
                }
                break;
                
            case "ilexportgui":
//                              $this->prepareOutput();
                $this->addHeaderAction();
                $ilTabs->activateTab("export");
                include_once("./Services/Export/classes/class.ilExportGUI.php");
                $exp_gui = new ilExportGUI($this);
                $exp_gui->addFormat("xml");
                $exp_gui->addFormat("html", "", $this, "exportHTML");
                if ($this->object->isCommentsExportPossible()) {
                    $exp_gui->addFormat("html_comments", "HTML (" . $this->lng->txt("wiki_incl_comments") . ")", $this, "exportHTML");
                }
                $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 "ilratinggui":
                // for rating category editing
                $this->checkPermission("write");
                $this->addHeaderAction();
                $ilTabs->activateTab("settings");
                $this->setSettingsSubTabs("rating_categories");
                include_once("Services/Rating/classes/class.ilRatingGUI.php");
                $gui = new ilRatingGUI();
                $gui->setObject($this->object->getId(), $this->object->getType());
                $gui->setExportCallback(array($this, "getSubObjectTitle"), $this->lng->txt("page"));
                $this->ctrl->forwardCommand($gui);
                break;
            
            case "ilwikistatgui":
                $this->checkPermission("statistics_read");
                
                $this->addHeaderAction();
                $ilTabs->activateTab("statistics");
                
                include_once "Modules/Wiki/classes/class.ilWikiStatGUI.php";
                $gui = new ilWikiStatGUI($this->object->getId());
                $this->ctrl->forwardCommand($gui);
                break;

            case "ilwikipagetemplategui":
                $this->checkPermission("write");
                $this->addHeaderAction();
                $ilTabs->activateTab("settings");
                $this->setSettingsSubTabs("page_templates");
                include_once("./Modules/Wiki/classes/class.ilWikiPageTemplateGUI.php");
                $wptgui = new ilWikiPageTemplateGUI($this);
                $this->ctrl->forwardCommand($wptgui);
                break;
            
            case 'ilobjectmetadatagui':
                $this->checkPermission("write");
                $this->addHeaderAction();
                $ilTabs->activateTab("advmd");
                include_once 'Services/Object/classes/class.ilObjectMetaDataGUI.php';
                $md_gui = new ilObjectMetaDataGUI($this->object, "wpg");
                $this->ctrl->forwardCommand($md_gui);
                break;

            case 'ilrepositoryobjectsearchgui':
                $this->addHeaderAction();
                $this->setSideBlock();
                $ilTabs->setTabActive("wiki_search_results");
                $ilCtrl->setReturn($this, 'view');
                include_once './Services/Search/classes/class.ilRepositoryObjectSearchGUI.php';
                $search_gui = new ilRepositoryObjectSearchGUI(
                    $this->object->getRefId(),
                    $this,
                    'view'
                );
                $ilCtrl->forwardCommand($search_gui);
                break;

            case 'ilobjnotificationsettingsgui':
                $this->addHeaderAction();
                $ilTabs->activateTab("settings");
                $this->setSettingsSubTabs("notifications");
                include_once("./Services/Notification/classes/class.ilObjNotificationSettingsGUI.php");
                $gui = new ilObjNotificationSettingsGUI($this->object->getRefId());
                $this->ctrl->forwardCommand($gui);
                break;

            default:
                $this->addHeaderAction();
                if (!$cmd) {
                    $cmd = "infoScreen";
                }
                $cmd .= "Object";
                if ($cmd != "cancelObject") {
                    if ($cmd != "infoScreenObject") {
                        if (!in_array($cmd, array("createObject", "saveObject", "importFileObject"))) {
                            $this->checkPermission("read");
                        }
                    } else {
                        $this->checkPermission("visible");
                    }
                }
                $this->$cmd();
                break;
        }
  
        return $ret;
    }
    
    public function isOnlineHelpWiki()
    {
        if (is_object($this->object)) {
            return ilObjWiki::isOnlineHelpWiki($this->object->getRefId());
        }
        return false;
    }
    
    public function viewObject()
    {
        $this->checkPermission("read");
        $this->gotoStartPageObject();
    }

    protected function initCreationForms($a_new_type)
    {
        $this->initSettingsForm("create");
        $this->getSettingsFormValues("create");

        $forms = array(self::CFORM_NEW => $this->form_gui,
                self::CFORM_IMPORT => $this->initImportForm($a_new_type),
                self::CFORM_CLONE => $this->fillCloneTemplate(null, $a_new_type));

        return $forms;
    }

    public function saveObject()
    {
        $tpl = $this->tpl;
        $lng = $this->lng;
        $ilErr = $this->error;

        if (!$this->checkPermissionBool("create", "", "wiki", $_GET["ref_id"])) {
            $ilErr->raiseError($this->lng->txt("permission_denied"), $ilErr->MESSAGE);
        }

        $this->initSettingsForm("create");
        if ($this->form_gui->checkInput()) {
            if (!ilObjWiki::checkShortTitleAvailability($this->form_gui->getInput("shorttitle"))) {
                $short_item = $this->form_gui->getItemByPostVar("shorttitle");
                $short_item->setAlert($lng->txt("wiki_short_title_already_in_use"));
            } else {
                // create and insert forum in objecttree
                $_POST["title"] = $this->form_gui->getInput("title");
                $_POST["desc"] = $this->form_gui->getInput("description");
                return parent::saveObject();
            }
        }
    
        $this->form_gui->setValuesByPost();
        $tpl->setContent($this->form_gui->getHtml());
    }

    public function afterSave(ilObject $newObj)
    {
        $ilSetting = $this->settings;
        
        $newObj->setTitle($this->form_gui->getInput("title"));
        $newObj->setDescription($this->form_gui->getInput("description"));
        $newObj->setIntroduction($this->form_gui->getInput("intro"));
        $newObj->setStartPage($this->form_gui->getInput("startpage"));
        $newObj->setShortTitle($this->form_gui->getInput("shorttitle"));
        $newObj->setRating($this->form_gui->getInput("rating"));
        // $newObj->setRatingAsBlock($this->form_gui->getInput("rating_side"));
        $newObj->setRatingForNewPages($this->form_gui->getInput("rating_new"));
        $newObj->setRatingCategories($this->form_gui->getInput("rating_ext"));

        $newObj->setRatingOverall($this->form_gui->getInput("rating_overall"));
        $newObj->setPageToc($this->form_gui->getInput("page_toc"));



        if (!$ilSetting->get("disable_comments")) {
            $newObj->setPublicNotes($this->form_gui->getInput("public_notes"));
        }
        $newObj->setOnline($this->form_gui->getInput("online"));
        $newObj->update();

        // always send a message
        ilUtil::sendSuccess($this->lng->txt("object_added"), true);
        ilUtil::redirect(ilObjWikiGUI::getGotoLink($newObj->getRefId()));
    }

    public function infoScreenObject()
    {
        $this->checkPermission("visible");
        $this->ctrl->setCmd("showSummary");
        $this->ctrl->setCmdClass("ilinfoscreengui");
        $this->infoScreen();
    }

    public function infoScreen()
    {
        $ilAccess = $this->access;
        $ilUser = $this->user;
        $ilTabs = $this->tabs;
        $lng = $this->lng;
        $ilErr = $this->error;
        
        $ilTabs->activateTab("info_short");

        if (!$ilAccess->checkAccess("visible", "", $this->object->getRefId())) {
            $ilErr->raiseError($this->lng->txt("msg_no_perm_read"), $ilErr->MESSAGE);
        }

        include_once("./Services/InfoScreen/classes/class.ilInfoScreenGUI.php");
        $info = new ilInfoScreenGUI($this);
        $info->enablePrivateNotes();
        if (trim($this->object->getIntroduction()) != "") {
            $info->addSection($lng->txt("wiki_introduction"));
            $info->addProperty("", nl2br($this->object->getIntroduction()));
        }
        
        // feedback from tutor; mark, status, comment
        include_once("./Modules/Wiki/classes/class.ilWikiContributor.php");
        include_once("./Services/Tracking/classes/class.ilLPMarks.php");
        $lpcomment = ilLPMarks::_lookupComment($ilUser->getId(), $this->object->getId());
        $mark = ilLPMarks::_lookupMark($ilUser->getId(), $this->object->getId());
        $status = ilWikiContributor::_lookupStatus($this->object->getId(), $ilUser->getId());
        if ($lpcomment != "" || $mark != "" || $status != ilWikiContributor::STATUS_NOT_GRADED) {
            $info->addSection($this->lng->txt("wiki_feedback_from_tutor"));
            if ($lpcomment != "") {
                $info->addProperty(
                    $this->lng->txt("wiki_comment"),
                    $lpcomment
                );
            }
            if ($mark != "") {
                $info->addProperty(
                    $this->lng->txt("wiki_mark"),
                    $mark
                );
            }

            if ($status == ilWikiContributor::STATUS_PASSED) {
                $info->addProperty(
                    $this->lng->txt("status"),
                    $this->lng->txt("wiki_passed")
                );
            }
            if ($status == ilWikiContributor::STATUS_FAILED) {
                $info->addProperty(
                    $this->lng->txt("status"),
                    $this->lng->txt("wiki_failed")
                );
            }
        }
        
        /*
        $info->enableNews();
        if ($ilAccess->checkAccess("write", "", $_GET["ref_id"]))
        {
            //$info->enableNewsEditing();
            $info->setBlockProperty("news", "settings", true);
        }*/
        
        if ($ilAccess->checkAccess("read", "", $this->object->getRefId())) {
            $info->addButton($lng->txt("wiki_start_page"), ilObjWikiGUI::getGotoLink($this->object->getRefId()));
        }
        
        // general information
        $this->lng->loadLanguageModule("meta");
        $this->lng->loadLanguageModule("wiki");

        //$info->addSection($this->lng->txt("meta_general"));
        //$info->addProperty($this->lng->txt("mcst_nr_items"),
        //      (int) count($med_items));

        // forward the command
        $this->ctrl->forwardCommand($info);

        if ($ilAccess->checkAccess("read", "", $this->object->getRefId())) {
            //                  $this->setSideBlock();
        }
    }
    
    public function gotoStartPageObject()
    {
        $ilCtrl = $this->ctrl;
        
        ilUtil::redirect(ilObjWikiGUI::getGotoLink($this->object->getRefId()));
    }

    public function addPageTabs()
    {
        $ilTabs = $this->tabs;
        $ilCtrl = $this->ctrl;
        
        include_once("./Modules/Wiki/classes/class.ilWikiPage.php");
        $ilCtrl->setParameter(
            $this,
            "wpg_id",
            ilWikiPage::getPageIdForTitle($this->object->getId(), ilWikiUtil::makeDbTitle($_GET["page"]))
        );
        $ilCtrl->setParameter($this, "page", ilWikiUtil::makeUrlTitle($_GET["page"]));
        $ilTabs->addTarget(
            "wiki_what_links_here",
            $this->ctrl->getLinkTargetByClass(
                "ilwikipagegui",
                "whatLinksHere"
            ),
            "whatLinksHere"
        );
        $ilTabs->addTarget(
            "wiki_print_view",
            $this->ctrl->getLinkTargetByClass(
                "ilwikipagegui",
                "printViewSelection"
            ),
            "printViewSelection"
        );
    }
    
    public function addPagesSubTabs()
    {
        $ilTabs = $this->tabs;
        $ilCtrl = $this->ctrl;
        
        $ilTabs->activateTab("wiki_pages");
        
        include_once("./Modules/Wiki/classes/class.ilWikiPage.php");
        $ilCtrl->setParameter(
            $this,
            "wpg_id",
            ilWikiPage::getPageIdForTitle(
                $this->object->getId(),
                ilWikiUtil::makeDbTitle($_GET["page"])
            )
        );
        $ilCtrl->setParameter($this, "page", ilWikiUtil::makeUrlTitle($_GET["page"]));
        $ilTabs->addSubTabTarget(
            "wiki_all_pages",
            $this->ctrl->getLinkTarget($this, "allPages"),
            "allPages"
        );
        $ilTabs->addSubTabTarget(
            "wiki_recent_changes",
            $this->ctrl->getLinkTarget($this, "recentChanges"),
            "recentChanges"
        );
        $ilTabs->addSubTabTarget(
            "wiki_new_pages",
            $this->ctrl->getLinkTarget($this, "newPages"),
            "newPages"
        );
        $ilTabs->addSubTabTarget(
            "wiki_popular_pages",
            $this->ctrl->getLinkTarget($this, "popularPages"),
            "popularPages"
        );
        $ilTabs->addSubTabTarget(
            "wiki_orphaned_pages",
            $this->ctrl->getLinkTarget($this, "orphanedPages"),
            "orphanedPages"
        );
    }

    public function getTabs()
    {
        $ilCtrl = $this->ctrl;
        $ilAccess = $this->access;
        $lng = $this->lng;
        $ilHelp = $this->help;
        
        $ilHelp->setScreenIdComponent("wiki");
        
        // wiki tabs
        if (in_array($ilCtrl->getCmdClass(), array("", "ilobjwikigui",
            "ilinfoscreengui", "ilpermissiongui", "ilexportgui", "ilratingcategorygui", "ilobjnotificationsettingsgui", "iltaxmdgui",
            "ilwikistatgui", "ilwikipagetemplategui", "iladvancedmdsettingsgui", "ilsettingspermissiongui", 'ilrepositoryobjectsearchgui'
            )) || (in_array($ilCtrl->getNextClass(), array("ilpermissiongui")))) {
            if ($_GET["page"] != "") {
                $this->tabs_gui->setBackTarget(
                    $lng->txt("wiki_last_visited_page"),
                    $this->getGotoLink(
                        $_GET["ref_id"],
                        ilWikiUtil::makeDbTitle($_GET["page"])
                    )
                );
            }
            
            // pages
            if ($ilAccess->checkAccess('read', "", $this->object->getRefId())) {
                $this->tabs_gui->addTab(
                    "wiki_pages",
                    $lng->txt("wiki_pages"),
                    $this->ctrl->getLinkTarget($this, "allPages")
                );
            }
            
            // info screen
            if ($ilAccess->checkAccess('visible', "", $this->object->getRefId())) {
                $this->tabs_gui->addTab(
                    "info_short",
                    $lng->txt("info_short"),
                    $this->ctrl->getLinkTargetByClass("ilinfoscreengui", "showSummary")
                );
            }
    
            // settings
            if ($ilAccess->checkAccess('write', "", $this->object->getRefId())) {
                $this->tabs_gui->addTab(
                    "settings",
                    $lng->txt("settings"),
                    $this->ctrl->getLinkTarget($this, "editSettings")
                );
                            
                // metadata
                include_once "Services/Object/classes/class.ilObjectMetaDataGUI.php";
                $mdgui = new ilObjectMetaDataGUI($this->object, "wpg");
                $mdtab = $mdgui->getTab();
                if ($mdtab) {
                    $this->tabs_gui->addTab(
                        "advmd",
                        $this->lng->txt("meta_data"),
                        $mdtab
                    );
                }
            }
            
            // contributors
            if ($ilAccess->checkAccess('write', "", $this->object->getRefId())) {
                $this->tabs_gui->addTab(
                    "wiki_contributors",
                    $lng->txt("wiki_contributors"),
                    $this->ctrl->getLinkTarget($this, "listContributors")
                );
            }

            // statistics
            if ($ilAccess->checkAccess('statistics_read', "", $this->object->getRefId())) {
                $this->tabs_gui->addTab(
                    "statistics",
                    $lng->txt("statistics"),
                    $this->ctrl->getLinkTargetByClass("ilWikiStatGUI", "initial")
                );
            }

            if ($ilAccess->checkAccess("write", "", $this->object->getRefId())) {
                $this->tabs_gui->addTab(
                    "export",
                    $lng->txt("export"),
                    $this->ctrl->getLinkTargetByClass("ilexportgui", "")
                );
            }
        
            // edit permissions
            if ($ilAccess->checkAccess('edit_permission', "", $this->object->getRefId())) {
                $this->tabs_gui->addTab(
                    "perm_settings",
                    $lng->txt("perm_settings"),
                    $this->ctrl->getLinkTargetByClass("ilpermissiongui", "perm")
                );
            }
        }
    }

    public function setSettingsSubTabs($a_active)
    {
        $ilTabs = $this->tabs;
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;
        $ilAccess = $this->access;

        if (in_array(
            $a_active,
            array("general_settings", "style", "imp_pages", "rating_categories",
            "page_templates", "advmd", "permission_settings", "notifications")
        )) {
            if ($ilAccess->checkAccess("write", "", $this->object->getRefId())) {
                // general properties
                $ilTabs->addSubTab(
                    "general_settings",
                    $lng->txt("wiki_general_settings"),
                    $ilCtrl->getLinkTarget($this, 'editSettings')
                );

                // permission settings
                $ilTabs->addSubTab(
                    "permission_settings",
                    $lng->txt("obj_permission_settings"),
                    $this->ctrl->getLinkTargetByClass("ilsettingspermissiongui", "")
                );

                // style properties
                $ilTabs->addSubTab(
                    "style",
                    $lng->txt("wiki_style"),
                    $ilCtrl->getLinkTarget($this, 'editStyleProperties')
                );
            }

            if ($ilAccess->checkAccess("write", "", $this->object->getRefId())) {
                // important pages
                $ilTabs->addSubTab(
                    "imp_pages",
                    $lng->txt("wiki_navigation"),
                    $ilCtrl->getLinkTarget($this, 'editImportantPages')
                );
            }

            if ($ilAccess->checkAccess("write", "", $this->object->getRefId())) {
                // page templates
                $ilTabs->addSubTab(
                    "page_templates",
                    $lng->txt("wiki_page_templates"),
                    $ilCtrl->getLinkTargetByClass("ilwikipagetemplategui", "")
                );

                // rating categories
                if ($this->object->getRating() && $this->object->getRatingCategories()) {
                    $lng->loadLanguageModule("rating");
                    $ilTabs->addSubTab(
                        "rating_categories",
                        $lng->txt("rating_categories"),
                        $ilCtrl->getLinkTargetByClass(array('ilratinggui', 'ilratingcategorygui'), '')
                    );
                }

                $ilTabs->addSubTab(
                    'notifications',
                    $lng->txt("notifications"),
                    $ilCtrl->getLinkTargetByClass("ilobjnotificationsettingsgui", '')
                );
            }
            
            $ilTabs->activateSubTab($a_active);
        }
    }

    public function editSettingsObject()
    {
        $tpl = $this->tpl;
        
        $this->checkPermission("write");
        
        $this->setSettingsSubTabs("general_settings");
        
        $this->initSettingsForm();
        $this->getSettingsFormValues();
        
        // Edit ecs export settings
        include_once 'Modules/Wiki/classes/class.ilECSWikiSettings.php';
        $ecs = new ilECSWikiSettings($this->object);
        $ecs->addSettingsToForm($this->form_gui, 'wiki');
        
        $tpl->setContent($this->form_gui->getHtml());
        $this->setSideBlock();
    }
    
    public function initSettingsForm($a_mode = "edit")
    {
        $lng = $this->lng;
        $ilCtrl = $this->ctrl;
        $ilTabs = $this->tabs;
        $ilSetting = $this->settings;
        $obj_service = $this->object_service;
        
        $lng->loadLanguageModule("wiki");
        $ilTabs->activateTab("settings");
        
        require_once("Services/Form/classes/class.ilPropertyFormGUI.php");
        $this->form_gui = new ilPropertyFormGUI();
        
        // Title
        $tit = new ilTextInputGUI($lng->txt("title"), "title");
        $tit->setRequired(true);
        $this->form_gui->addItem($tit);

        // Short Title
        // The problem with the short title is, that it is per object
        // and can't be a substitute for a ref id in the permanent link
        /*
                $stit = new ilRegExpInputGUI($lng->txt("wiki_short_title"), "shorttitle");
                $stit->setPattern("/^[^0-9][^ _\&]+$/");
                $stit->setRequired(false);
                $stit->setNoMatchMessage($lng->txt("wiki_msg_short_name_regexp")." &amp; _");
                $stit->setSize(20);
                $stit->setMaxLength(20);
                $stit->setInfo($lng->txt("wiki_short_title_desc2"));
                $this->form_gui->addItem($stit);
        */

        // Description
        $des = new ilTextAreaInputGUI($lng->txt("description"), "description");
        $this->form_gui->addItem($des);

        // Introduction
        $intro = new ilTextAreaInputGUI($lng->txt("wiki_introduction"), "intro");
        $intro->setCols(40);
        $intro->setRows(4);
        $this->form_gui->addItem($intro);

        // Start Page
        if ($a_mode == "edit") {
            $pages = ilWikiPage::getAllWikiPages($this->object->getId());
            foreach ($pages as $p) {
                $options[$p["id"]] = ilUtil::shortenText($p["title"], 60, true);
            }
            $si = new ilSelectInputGUI($lng->txt("wiki_start_page"), "startpage_id");
            $si->setOptions($options);
            $this->form_gui->addItem($si);
        } else {
            $sp = new ilTextInputGUI($lng->txt("wiki_start_page"), "startpage");
            if ($a_mode == "edit") {
                $sp->setInfo($lng->txt("wiki_start_page_info"));
            }
            $sp->setMaxLength(200);
            $sp->setRequired(true);
            $this->form_gui->addItem($sp);
        }

        // Online
        $online = new ilCheckboxInputGUI($lng->txt("online"), "online");
        $this->form_gui->addItem($online);

        
        // rating
        
        $lng->loadLanguageModule('rating');
        $rate = new ilCheckboxInputGUI($lng->txt('rating_activate_rating'), 'rating_overall');
        $rate->setInfo($lng->txt('rating_activate_rating_info'));
        $this->form_gui->addItem($rate);
                
        $rating = new ilCheckboxInputGUI($lng->txt("wiki_activate_rating"), "rating");
        $this->form_gui->addItem($rating);
        
        /* always active
        $side = new ilCheckboxInputGUI($lng->txt("wiki_activate_sideblock_rating"), "rating_side");
        $rating->addSubItem($side);
        */
        
        $new = new ilCheckboxInputGUI($lng->txt("wiki_activate_new_page_rating"), "rating_new");
        $rating->addSubItem($new);
        
        $extended = new ilCheckboxInputGUI($lng->txt("wiki_activate_extended_rating"), "rating_ext");
        $rating->addSubItem($extended);
        

        // public comments
        if (!$ilSetting->get("disable_comments")) {
            $comments = new ilCheckboxInputGUI($lng->txt("wiki_public_comments"), "public_notes");
            $this->form_gui->addItem($comments);
        }

        // important pages
        //              $imp_pages = new ilCheckboxInputGUI($lng->txt("wiki_important_pages"), "imp_pages");
        //              $this->form_gui->addItem($imp_pages);

        // page toc
        $page_toc = new ilCheckboxInputGUI($lng->txt("wiki_page_toc"), "page_toc");
        $page_toc->setInfo($lng->txt("wiki_page_toc_info"));
        $this->form_gui->addItem($page_toc);
        
        if ($a_mode == "edit") {
            // advanced metadata auto-linking
            include_once('Services/AdvancedMetaData/classes/class.ilAdvancedMDRecord.php');
            if (count(ilAdvancedMDRecord::_getSelectedRecordsByObject("wiki", $this->object->getRefId(), "wpg")) > 0) {
                $link_md = new ilCheckboxInputGUI($lng->txt("wiki_link_md_values"), "link_md_values");
                $link_md->setInfo($lng->txt("wiki_link_md_values_info"));
                $this->form_gui->addItem($link_md);
            }


            $section = new ilFormSectionHeaderGUI();
            $section->setTitle($this->lng->txt('obj_presentation'));
            $this->form_gui->addItem($section);

            // tile image
            $obj_service->commonSettings()->legacyForm($this->form_gui, $this->object)->addTileImage();


            // additional features
            $feat = new ilFormSectionHeaderGUI();
            $feat->setTitle($this->lng->txt('obj_features'));
            $this->form_gui->addItem($feat);

            include_once './Services/Container/classes/class.ilContainer.php';
            include_once './Services/Object/classes/class.ilObjectServiceSettingsGUI.php';
            ilObjectServiceSettingsGUI::initServiceSettingsForm(
                $this->object->getId(),
                $this->form_gui,
                array(
                        ilObjectServiceSettingsGUI::CUSTOM_METADATA
                    )
            );
        }
        
        // :TODO: sorting

        // Form action and save button
        $this->form_gui->setTitleIcon(ilUtil::getImagePath("icon_wiki.svg"));
        if ($a_mode != "create") {
            $this->form_gui->setTitle($lng->txt("wiki_settings"));
            $this->form_gui->addCommandButton("saveSettings", $lng->txt("save"));
        } else {
            $this->form_gui->setTitle($lng->txt("wiki_new"));
            $this->form_gui->addCommandButton("save", $lng->txt("wiki_add"));
            $this->form_gui->addCommandButton("cancel", $lng->txt("cancel"));
        }
        
        // set values
        if ($a_mode == "create") {
            $ilCtrl->setParameter($this, "new_type", "wiki");
        }

        $this->form_gui->setFormAction($ilCtrl->getFormAction($this, "saveSettings"));
    }
    
    public function getSettingsFormValues($a_mode = "edit")
    {
        $lng = $this->lng;
        $ilUser = $this->user;
        
        // set values
        if ($a_mode == "create") {
            //$values["startpage"] = $lng->txt("wiki_main_page");
            $values["rating_new"] = true;
            
            $values["rating_overall"] = ilObject::hasAutoRating("wiki", $_GET["ref_id"]);
            
            $this->form_gui->setValuesByArray($values);
        } else {
            $values["online"] = $this->object->getOnline();
            $values["title"] = $this->object->getTitle();
            //$values["startpage"] = $this->object->getStartPage();
            $values["startpage_id"] = ilWikiPage::_getPageIdForWikiTitle($this->object->getId(), $this->object->getStartPage());
            $values["shorttitle"] = $this->object->getShortTitle();
            $values["description"] = $this->object->getLongDescription();
            $values["rating_overall"] = $this->object->getRatingOverall();
            $values["rating"] = $this->object->getRating();
            // $values["rating_side"] = $this->object->getRatingAsBlock();
            $values["rating_new"] = $this->object->getRatingForNewPages();
            $values["rating_ext"] = $this->object->getRatingCategories();
            $values["public_notes"] = $this->object->getPublicNotes();
            $values["intro"] = $this->object->getIntroduction();
            //                  $values["imp_pages"] = $this->object->getImportantPages();
            $values["page_toc"] = $this->object->getPageToc();
            $values["link_md_values"] = $this->object->getLinkMetadataValues();
                        
            // only set given values (because of adv. metadata)
            $this->form_gui->setValuesByArray($values, true);
        }
    }
    
    
    public function saveSettingsObject()
    {
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;
        $ilUser = $this->user;
        $ilSetting = $this->settings;
        $obj_service = $this->object_service;
        
        $this->checkPermission("write");
        
        $this->initSettingsForm();
        
        if ($this->form_gui->checkInput()) {
            if (!ilObjWiki::checkShortTitleAvailability($this->form_gui->getInput("shorttitle")) &&
                $this->form_gui->getInput("shorttitle") != $this->object->getShortTitle()) {
                $short_item = $this->form_gui->getItemByPostVar("shorttitle");
                $short_item->setAlert($lng->txt("wiki_short_title_already_in_use"));
            } else {
                $this->object->setTitle($this->form_gui->getInput("title"));
                $this->object->setDescription($this->form_gui->getInput("description"));
                $this->object->setOnline($this->form_gui->getInput("online"));
                $this->object->setStartPage(ilWikiPage::lookupTitle($this->form_gui->getInput("startpage_id")));
                $this->object->setShortTitle($this->form_gui->getInput("shorttitle"));
                $this->object->setRatingOverall($this->form_gui->getInput("rating_overall"));
                $this->object->setRating($this->form_gui->getInput("rating"));
                // $this->object->setRatingAsBlock($this->form_gui->getInput("rating_side"));
                $this->object->setRatingForNewPages($this->form_gui->getInput("rating_new"));
                $this->object->setRatingCategories($this->form_gui->getInput("rating_ext"));
                
                if (!$ilSetting->get("disable_comments")) {
                    $this->object->setPublicNotes($this->form_gui->getInput("public_notes"));
                }
                $this->object->setIntroduction($this->form_gui->getInput("intro"));
                //                              $this->object->setImportantPages($this->form_gui->getInput("imp_pages"));
                $this->object->setPageToc($this->form_gui->getInput("page_toc"));
                $this->object->setLinkMetadataValues($this->form_gui->getInput("link_md_values"));
                $this->object->update();

                // tile image
                $obj_service->commonSettings()->legacyForm($this->form_gui, $this->object)->saveTileImage();

                            
                include_once './Services/Object/classes/class.ilObjectServiceSettingsGUI.php';
                ilObjectServiceSettingsGUI::updateServiceSettingsForm(
                    $this->object->getId(),
                    $this->form_gui,
                    array(
                        ilObjectServiceSettingsGUI::CUSTOM_METADATA
                    )
                );
                
                // Update ecs export settings
                include_once 'Modules/Wiki/classes/class.ilECSWikiSettings.php';
                $ecs = new ilECSWikiSettings($this->object);
                if ($ecs->handleSettingsUpdate()) {
                    ilUtil::sendSuccess($this->lng->txt("msg_obj_modified"), true);
                    $ilCtrl->redirect($this, "editSettings");
                }
            }
        }
        
        $this->form_gui->setValuesByPost();
        $this->tpl->setContent($this->form_gui->getHTML());
    }

    public function listContributorsObject()
    {
        $tpl = $this->tpl;
        $ilTabs = $this->tabs;
        
        $this->checkPermission("write");
        $ilTabs->activateTab("wiki_contributors");
        
        include_once("./Modules/Wiki/classes/class.ilWikiContributorsTableGUI.php");
        
        $table_gui = new ilWikiContributorsTableGUI(
            $this,
            "listContributors",
            $this->object->getId()
        );

        $tpl->setContent($table_gui->getHTML());
        
        $this->setSideBlock();
    }
    
    public function saveGradingObject()
    {
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;
        
        $this->checkPermission("write");
        
        $users = (is_array($_POST["user_id"])
                ? $_POST["user_id"]
                : array());
        
        include_once("./Modules/Wiki/classes/class.ilWikiContributor.php");
        include_once("./Services/Tracking/classes/class.ilLPMarks.php");
        $saved = false;
        foreach ($users as $user_id) {
            if ($user_id != "") {
                $marks_obj = new ilLPMarks($this->object->getId(), $user_id);
                $new_mark = ilUtil::stripSlashes($_POST['mark'][$user_id]);
                $new_comment = ilUtil::stripSlashes($_POST['lcomment'][$user_id]);
                $new_status = ilUtil::stripSlashes($_POST["status"][$user_id]);

                if ($marks_obj->getMark() != $new_mark ||
                    $marks_obj->getComment() != $new_comment ||
                    ilWikiContributor::_lookupStatus($this->object->getId(), $user_id) != $new_status) {
                    ilWikiContributor::_writeStatus($this->object->getId(), $user_id, $new_status);
                    $marks_obj->setMark($new_mark);
                    $marks_obj->setComment($new_comment);
                    $marks_obj->update();
                    $saved = true;
                }
            }
        }
        if ($saved) {
            ilUtil::sendSuccess($lng->txt("msg_obj_modified"), true);
        }
        
        $ilCtrl->redirect($this, "listContributors");
    }
    
    // add wiki to locator
    public function addLocatorItems()
    {
        $ilLocator = $this->locator;
        
        if (is_object($this->object)) {
            $ilLocator->addItem(
                $this->object->getTitle(),
                $this->getGotoLink($this->object->getRefId()),
                "",
                $_GET["ref_id"]
            );
        }
    }

    public static function _goto($a_target)
    {
        global $DIC;

        $ilAccess = $DIC->access();
        $ilErr = $DIC["ilErr"];
        $lng = $DIC->language();
        $ilNavigationHistory = $DIC["ilNavigationHistory"];
        
        $i = strpos($a_target, "_");
        if ($i > 0) {
            $a_page = substr($a_target, $i + 1);
            $a_target = substr($a_target, 0, $i);
        }
        
        if ($a_target == "wpage") {
            $a_page_arr = explode("_", $a_page);
            $wpg_id = (int) $a_page_arr[0];
            $ref_id = (int) $a_page_arr[1];
            include_once("./Modules/Wiki/classes/class.ilWikiPage.php");
            $w_id = ilWikiPage::lookupWikiId($wpg_id);
            if ($ref_id > 0) {
                $refs = array($ref_id);
            } else {
                $refs = ilObject::_getAllReferences($w_id);
            }
            foreach ($refs as $r) {
                if ($ilAccess->checkAccess("read", "", $r)) {
                    $a_target = $r;
                    $a_page = ilWikiPage::lookupTitle($wpg_id);
                }
            }
        }
            
        if ($ilAccess->checkAccess("read", "", $a_target)) {
            $_GET["cmd"] = "viewPage";
            $_GET["ref_id"] = $a_target;
            $_GET["page"] = $a_page;
            $_GET["baseClass"] = "ilwikihandlergui";
            $_GET["cmdClass"] = "ilobjwikigui";
            /*                  if ($a_page != "")
                        {
                            $add = "&amp;page=".rawurlencode($_GET["page"]);
                            $ilNavigationHistory->addItem($_GET["ref_id"],
                                "./goto.php?target=wiki_".$_GET["ref_id"].$add, "wiki");
                        }*/
            include("ilias.php");
            exit;
        } elseif ($ilAccess->checkAccess("visible", "", $a_target)) {
            ilObjectGUI::_gotoRepositoryNode($a_target, "infoScreen");
        } elseif ($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();
        }

        $ilErr->raiseError($lng->txt("msg_no_perm_read"), $ilErr->FATAL);
    }

    public static function getGotoLink($a_ref_id, $a_page = "")
    {
        if ($a_page == "") {
            $a_page = ilObjWiki::_lookupStartPage(ilObject::_lookupObjId($a_ref_id));
        }
        
        $goto = "goto.php?target=wiki_" . $a_ref_id . "_" .
            ilWikiUtil::makeUrlTitle($a_page);
            
        return $goto;
    }
    
    public function viewPageObject()
    {
        $lng = $this->lng;
        $ilCtrl = $this->ctrl;
        $tpl = $this->tpl;
        $ilTabs = $this->tabs;
        $ilAccess = $this->access;
        
        $this->checkPermission("read");

        $ilTabs->clearTargets();
        $tpl->setHeaderActionMenu(null);

        $page = ($_GET["page"] != "")
            ? $_GET["page"]
            : $this->object->getStartPage();
        $_GET["page"] = $page;
            
        include_once("./Modules/Wiki/classes/class.ilWikiPage.php");
        if (!ilWikiPage::exists($this->object->getId(), $page)) {
            $page = $this->object->getStartPage();
        }
        
        if (!ilWikiPage::exists($this->object->getId(), $page)) {
            ilUtil::sendInfo($lng->txt("wiki_no_start_page"), true);
            $ilCtrl->redirect($this, "infoScreen");
            return;
        }
        
        // page exists, show it !
        $ilCtrl->setParameter($this, "page", ilWikiUtil::makeUrlTitle($page));
        
        include_once("./Modules/Wiki/classes/class.ilWikiPageGUI.php");
        $wpage_gui = ilWikiPageGUI::getGUIForTitle(
            $this->object->getId(),
            ilWikiUtil::makeDbTitle($page),
            0,
            $this->object->getRefId()
        );
        include_once("./Services/Style/Content/classes/class.ilObjStyleSheet.php");
        $wpage_gui->setStyleId(ilObjStyleSheet::getEffectiveContentStyleId(
            $this->object->getStyleSheetId(),
            "wiki"
        ));

        $this->setContentStyleSheet();

        //$wpage_gui->setSideBlock();
        $ilCtrl->setCmdClass("ilwikipagegui");
        $ilCtrl->setCmd("preview");
        if (!$ilAccess->checkAccess("write", "", $this->object->getRefId()) &&
            (
                !$ilAccess->checkAccess("edit_content", "", $this->object->getRefId()) ||
                $wpage_gui->getPageObject()->getBlocked()
            )) {
            $wpage_gui->setEnableEditing(false);
        }

        // alter title and description
        //$tpl->setTitle($wpage_gui->getPageObject()->getTitle());
        //$tpl->setDescription($this->object->getTitle());
        if ($ilAccess->checkAccess("write", "", $this->object->getRefId())) {
            $wpage_gui->activateMetaDataEditor($this->object, "wpg", $wpage_gui->getId());
        }
        
        
        $html = $ilCtrl->forwardCommand($wpage_gui);
        //$this->addPageTabs();
        
        $tpl->setContent($html);
    }
        
    public function allPagesObject()
    {
        $tpl = $this->tpl;
        
        $this->checkPermission("read");
        
        include_once("./Modules/Wiki/classes/class.ilWikiPagesTableGUI.php");
        
        $this->addPagesSubTabs();
        
        $table_gui = new ilWikiPagesTableGUI(
            $this,
            "allPages",
            $this->object->getId(),
            IL_WIKI_ALL_PAGES
        );
            
        $this->setSideBlock();
        $tpl->setContent($table_gui->getHTML());
    }
    
    public function popularPagesObject()
    {
        $tpl = $this->tpl;
        
        $this->checkPermission("read");
        
        include_once("./Modules/Wiki/classes/class.ilWikiPagesTableGUI.php");
        
        $this->addPagesSubTabs();
        
        $table_gui = new ilWikiPagesTableGUI(
            $this,
            "popularPages",
            $this->object->getId(),
            IL_WIKI_POPULAR_PAGES
        );
            
        $this->setSideBlock();
        $tpl->setContent($table_gui->getHTML());
    }

    public function orphanedPagesObject()
    {
        $tpl = $this->tpl;
        
        $this->checkPermission("read");
        
        include_once("./Modules/Wiki/classes/class.ilWikiPagesTableGUI.php");
        
        $this->addPagesSubTabs();
        
        $table_gui = new ilWikiPagesTableGUI(
            $this,
            "orphanedPages",
            $this->object->getId(),
            IL_WIKI_ORPHANED_PAGES
        );
            
        $this->setSideBlock();
        $tpl->setContent($table_gui->getHTML());
    }

    public function gotoPageObject($a_page = "")
    {
        $ilCtrl = $this->ctrl;
        
        if ($a_page == "") {
            $a_page = $_GET["page"];
        }
        
        include_once("./Modules/Wiki/classes/class.ilWikiPage.php");
        if (ilWikiPage::_wikiPageExists(
            $this->object->getId(),
            ilWikiUtil::makeDbTitle($a_page)
        )) {
            // to do: get rid of this redirect
            ilUtil::redirect(ilObjWikiGUI::getGotoLink($this->object->getRefId(), $a_page));
        } else {
            if (!$this->access->checkAccess("edit_content", "", $this->object->getRefId())) {
                ilUtil::sendFailure($this->lng->txt("no_permission"), true);
                ilUtil::redirect(ilObjWikiGUI::getGotoLink($this->object->getRefId(), $_GET["from_page"]));
            }
            if (!$this->object->getTemplateSelectionOnCreation()) {

                // check length
                include_once("./Services/Utilities/classes/class.ilStr.php");
                if (ilStr::strLen(ilWikiUtil::makeDbTitle($a_page)) > 200) {
                    ilUtil::sendFailure($this->lng->txt("wiki_page_title_too_long") . " (" . $a_page . ")", true);
                    $ilCtrl->setParameterByClass("ilwikipagegui", "page", ilWikiUtil::makeUrlTitle($_GET["from_page"]));
                    $ilCtrl->redirectByClass("ilwikipagegui", "preview");
                }
                $this->object->createWikiPage($a_page);

                // redirect to newly created page
                $ilCtrl->setParameterByClass("ilwikipagegui", "page", ilWikiUtil::makeUrlTitle(($a_page)));
                $ilCtrl->redirectByClass("ilwikipagegui", "edit");
            } else {
                $ilCtrl->setParameter($this, "page", ilWikiUtil::makeUrlTitle($_GET["page"]));
                $ilCtrl->setParameter($this, "from_page", ilWikiUtil::makeUrlTitle($_GET["from_page"]));
                $ilCtrl->redirect($this, "showTemplateSelection");
            }
        }
    }

    public function randomPageObject()
    {
        $this->checkPermission("read");
        
        include_once("./Modules/Wiki/classes/class.ilWikiPage.php");
        $page = ilWikiPage::getRandomPage($this->object->getId());
        $this->gotoPageObject($page);
    }

    public function recentChangesObject()
    {
        $tpl = $this->tpl;
        
        $this->checkPermission("read");
        
        include_once("./Modules/Wiki/classes/class.ilWikiRecentChangesTableGUI.php");
        
        $this->addPagesSubTabs();
        
        $table_gui = new ilWikiRecentChangesTableGUI(
            $this,
            "recentChanges",
            $this->object->getId()
        );
            
        $this->setSideBlock();
        $tpl->setContent($table_gui->getHTML());
    }

    public function setSideBlock($a_wpg_id = 0)
    {
        ilObjWikiGUI::renderSideBlock($a_wpg_id, $this->object->getRefId());
    }


    public static function renderSideBlock($a_wpg_id, $a_wiki_ref_id, $a_wp = null)
    {
        global $DIC;

        $tpl = $DIC["tpl"];
        $lng = $DIC->language();
        $ilAccess = $DIC->access();
        $ilCtrl = $DIC->ctrl();

        $tpl->addJavaScript("./Modules/Wiki/js/WikiPres.js");

        // setting asynch to false fixes #0019457, since otherwise ilBlockGUI would act on asynch and output html when side blocks
        // being processed during the export. This is a flaw in ilCtrl and/or ilBlockGUI.
        $tpl->addOnLoadCode("il.Wiki.Pres.init('" . $ilCtrl->getLinkTargetByClass("ilobjwikigui", "", "", false, false) . "');");

        if ($a_wpg_id > 0 && !$a_wp) {
            include_once("./Modules/Wiki/classes/class.ilWikiPage.php");
            $a_wp = ilWikiPage($a_wpg_id);
        }

        // search block
        include_once './Services/Search/classes/class.ilRepositoryObjectSearchGUI.php';
        $rcontent = ilRepositoryObjectSearchGUI::getSearchBlockHTML($lng->txt('wiki_search'));
        

        // quick navigation
        if ($a_wpg_id > 0) {
            // rating
            $wiki_id = ilObject::_lookupObjId($a_wiki_ref_id);
            if (ilObjWiki::_lookupRating($wiki_id) &&
                // ilObjWiki::_lookupRatingAsBlock($wiki_id) &&
                $a_wp->getRating()) {
                include_once("./Services/Rating/classes/class.ilRatingGUI.php");
                $rgui = new ilRatingGUI();
                $rgui->setObject($wiki_id, "wiki", $a_wpg_id, "wpg");
                $rgui->enableCategories(ilObjWiki::_lookupRatingCategories($wiki_id));
                $rgui->setYourRatingText("#");
                $rcontent .= $rgui->getBlockHTML($lng->txt("wiki_rate_page"));
            }
        
            // advanced metadata
            if (!ilWikiPage::lookupAdvancedMetadataHidden($a_wpg_id)) {
                $cmd = null;
                if ($ilAccess->checkAccess("write", "", $a_wiki_ref_id) ||
                    $ilAccess->checkAccess("edit_page_meta", "", $a_wiki_ref_id)) {
                    $cmd = array(
                        "edit" => $ilCtrl->getLinkTargetByClass("ilwikipagegui", "editAdvancedMetaData"),
                        "hide" => $ilCtrl->getLinkTargetByClass("ilwikipagegui", "hideAdvancedMetaData")
                    );
                }
                include_once("./Services/Object/classes/class.ilObjectMetaDataGUI.php");
                $wiki = new ilObjWiki($a_wiki_ref_id);
                $callback = $wiki->getLinkMetadataValues()
                    ? array($wiki, "decorateAdvMDValue")
                    : null;
                $mdgui = new ilObjectMetaDataGUI($wiki, "wpg", $a_wpg_id);
                $rcontent .= $mdgui->getBlockHTML($cmd, $callback); // #17291
            }
        }
            
        // important pages
        include_once("./Modules/Wiki/classes/class.ilWikiImportantPagesBlockGUI.php");
        $imp_pages_block = new ilWikiImportantPagesBlockGUI();
        $rcontent .= $imp_pages_block->getHTML();

        // wiki functions block
        if ($a_wpg_id > 0) {
            include_once("./Modules/Wiki/classes/class.ilWikiFunctionsBlockGUI.php");
            $wiki_functions_block = new ilWikiFunctionsBlockGUI();
            $wiki_functions_block->setPageObject($a_wp);
            $rcontent .= $wiki_functions_block->getHTML();
        }

        $tpl->setRightContent($rcontent);
    }
    
    public function newPagesObject()
    {
        $tpl = $this->tpl;
        
        $this->checkPermission("read");
        
        include_once("./Modules/Wiki/classes/class.ilWikiPagesTableGUI.php");
        
        $this->addPagesSubTabs();
        
        $table_gui = new ilWikiPagesTableGUI(
            $this,
            "newPages",
            $this->object->getId(),
            IL_WIKI_NEW_PAGES
        );
            
        $this->setSideBlock();
        $tpl->setContent($table_gui->getHTML());
    }
    
    protected function getPrintPageIds()
    {
        // multiple ordered page ids
        if (is_array($_POST["wordr"])) {
            asort($_POST["wordr"]);
            $page_ids = array_keys($_POST["wordr"]);
        }
        // single page
        elseif ((int) $_GET["wpg_id"]) {
            $page_ids = array((int) $_GET["wpg_id"]);
        }
        
        return $page_ids;
    }
    
    public function printViewObject($a_pdf_export = false)
    {
        global $tpl;
        $tpl = $this->tpl;

        $tabs = $this->tabs_gui;

        $tabs->clearTargets();
        $tabs->setBackTarget(
            $this->lng->txt("back"),
            $this->ctrl->getLinkTargetByClass("ilwikipagegui", "printViewSelection")
        );
        
        $page_ids = $this->getPrintPageIds();
        if (!$page_ids) {
            $this->ctrl->redirect($this, "");
        }
                                
        $this->setContentStyleSheet($tpl);

        $page_content = "";
        foreach ($page_ids as $p_id) {
            $page_gui = new ilWikiPageGUI($p_id);
            $page_gui->setWiki($this->object);
            $page_gui->setOutputMode("print");
            $page_content .= $page_gui->showPage();
            
            if ($a_pdf_export) {
                $page_content .= '<p style="page-break-after:always;"></p>';
            }
        }
        
        //$page_content = '<div class="ilInvisibleBorder">' . $page_content . '</div>';
        
        if (!$a_pdf_export) {
            $tpl->addOnLoadCode("il.Util.print();");
        }
        
        $tpl->setContent($page_content);
        
        if (!$a_pdf_export) {
//            $tpl->printToStdout(false);
        } else {
            return $tpl->printToString();
        }
    }
    
    public function pdfExportObject()
    {

        // prepare generation before contents are processed (for mathjax)
        ilPDFGeneratorUtils::prepareGenerationRequest("Wiki", "ContentExport");

        $html = $this->printViewObject(true);
        
        // :TODO: fixing css dummy parameters
        $html = preg_replace("/\?dummy\=[0-9]+/", "", $html);
        $html = preg_replace("/\?vers\=[0-9A-Za-z\-]+/", "", $html);
        $html = str_replace('.css$Id$', ".css", $html);

        if (false) {
            include_once "Services/PDFGeneration/classes/class.ilPDFGeneration.php";
            include_once "Services/PDFGeneration/classes/class.ilPDFGenerationJob.php";

            $job = new ilPDFGenerationJob();
            $job->setAutoPageBreak(true)
                ->setMarginLeft("10")
                ->setMarginRight("10")
                ->setMarginTop("10")
                ->setMarginBottom("10")
                ->setOutputMode("D")// download
                ->setFilename("wiki.pdf")// :TODO:
                ->setCreator("ILIAS Wiki")// :TODO:
                ->setImageScale(1.25)// complete content scaling ?!
                ->addPage($html);

            ilPDFGeneration::doJob($job);
        } else {
            $html = preg_replace("/src=\"\\.\\//ims", "src=\"" . ILIAS_HTTP_PATH . "/", $html);
            $html = preg_replace("/href=\"\\.\\//ims", "href=\"" . ILIAS_HTTP_PATH . "/", $html);
            $pdf_factory = new ilHtmlToPdfTransformerFactory();
            $pdf_factory->deliverPDFFromHTMLString($html, "wiki.pdf", ilHtmlToPdfTransformerFactory::PDF_OUTPUT_DOWNLOAD, "Wiki", "ContentExport");
        }
    }

    public function performSearchObject()
    {
        $tpl = $this->tpl;
        $ilTabs = $this->tabs;
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;
        
        $this->checkPermission("read");
        
        include_once("./Modules/Wiki/classes/class.ilWikiSearchResultsTableGUI.php");
        
        $ilTabs->setTabActive("wiki_search_results");
        
        if (trim($_POST["search_term"]) == "") {
            ilUtil::sendFailure($lng->txt("wiki_please_enter_search_term"), true);
            $ilCtrl->redirectByClass("ilwikipagegui", "preview");
        }
        
        $search_results = ilObjWiki::_performSearch(
            $this->object->getId(),
            ilUtil::stripSlashes($_POST["search_term"])
        );
        $table_gui = new ilWikiSearchResultsTableGUI(
            $this,
            "performSearch",
            $this->object->getId(),
            $search_results,
            $_POST["search_term"]
        );
            
        $this->setSideBlock();
        $tpl->setContent($table_gui->getHTML());
    }

    public function setContentStyleSheet($tpl = null)
    {
        $tpl = $this->tpl;

        if ($tpl == null) {
            $tpl = $this->tpl;
        }

        $tpl->addCss(ilObjStyleSheet::getContentStylePath(
            ilObjStyleSheet::getEffectiveContentStyleId(
                $this->object->getStyleSheetId(),
                "wiki"
            )
        ));
        $tpl->addCss(ilObjStyleSheet::getSyntaxStylePath());
    }
    
    
    public function editStylePropertiesObject()
    {
        $ilTabs = $this->tabs;
        $tpl = $this->tpl;
        
        $this->checkPermission("write");
        
        $this->initStylePropertiesForm();
        $tpl->setContent($this->form->getHTML());
        
        $ilTabs->activateTab("settings");
        $this->setSettingsSubTabs("style");
        
        $this->setSideBlock();
    }
    
    public function initStylePropertiesForm()
    {
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;
        $ilTabs = $this->tabs;
        $ilSetting = $this->settings;
        
        include_once("./Services/Style/Content/classes/class.ilObjStyleSheet.php");
        $lng->loadLanguageModule("style");

        include_once("./Services/Form/classes/class.ilPropertyFormGUI.php");
        $this->form = new ilPropertyFormGUI();
        
        $fixed_style = $ilSetting->get("fixed_content_style_id");
        $style_id = $this->object->getStyleSheetId();

        if ($fixed_style > 0) {
            $st = new ilNonEditableValueGUI($lng->txt("style_current_style"));
            $st->setValue(ilObject::_lookupTitle($fixed_style) . " (" .
                $this->lng->txt("global_fixed") . ")");
            $this->form->addItem($st);
        } else {
            $st_styles = ilObjStyleSheet::_getStandardStyles(
                true,
                false,
                $_GET["ref_id"]
            );

            $st_styles[0] = $this->lng->txt("default");
            ksort($st_styles);

            if ($style_id > 0) {
                // individual style
                if (!ilObjStyleSheet::_lookupStandard($style_id)) {
                    $st = new ilNonEditableValueGUI($lng->txt("style_current_style"));
                    $st->setValue(ilObject::_lookupTitle($style_id));
                    $this->form->addItem($st);

                    //$this->ctrl->getLinkTargetByClass("ilObjStyleSheetGUI", "edit"));

                    // delete command
                    $this->form->addCommandButton(
                        "editStyle",
                        $lng->txt("style_edit_style")
                    );
                    $this->form->addCommandButton(
                        "deleteStyle",
                        $lng->txt("style_delete_style")
                    );
                    //$this->ctrl->getLinkTargetByClass("ilObjStyleSheetGUI", "delete"));
                }
            }

            if ($style_id <= 0 || ilObjStyleSheet::_lookupStandard($style_id)) {
                $style_sel = ilUtil::formSelect(
                    $style_id,
                    "style_id",
                    $st_styles,
                    false,
                    true
                );
                $style_sel = new ilSelectInputGUI($lng->txt("style_current_style"), "style_id");
                $style_sel->setOptions($st_styles);
                $style_sel->setValue($style_id);
                $this->form->addItem($style_sel);
                //$this->ctrl->getLinkTargetByClass("ilObjStyleSheetGUI", "create"));
                $this->form->addCommandButton(
                    "saveStyleSettings",
                    $lng->txt("save")
                );
                $this->form->addCommandButton(
                    "createStyle",
                    $lng->txt("sty_create_ind_style")
                );
            }
        }
        $this->form->setTitle($lng->txt("wiki_style"));
        $this->form->setFormAction($ilCtrl->getFormAction($this));
    }

    public function createStyleObject()
    {
        $ilCtrl = $this->ctrl;

        $ilCtrl->redirectByClass("ilobjstylesheetgui", "create");
    }
    
    public function editStyleObject()
    {
        $ilCtrl = $this->ctrl;

        $ilCtrl->redirectByClass("ilobjstylesheetgui", "edit");
    }

    public function deleteStyleObject()
    {
        $ilCtrl = $this->ctrl;

        $ilCtrl->redirectByClass("ilobjstylesheetgui", "delete");
    }

    public function saveStyleSettingsObject()
    {
        $ilSetting = $this->settings;
    
        include_once("./Services/Style/Content/classes/class.ilObjStyleSheet.php");
        if ($ilSetting->get("fixed_content_style_id") <= 0 &&
            (ilObjStyleSheet::_lookupStandard($this->object->getStyleSheetId())
            || $this->object->getStyleSheetId() == 0)) {
            $this->object->setStyleSheetId(ilUtil::stripSlashes($_POST["style_id"]));
            $this->object->update();
            ilUtil::sendSuccess($this->lng->txt("msg_obj_modified"), true);
        }
        $this->ctrl->redirect($this, "editStyleProperties");
    }

    //
    // Important pages
    //

    public function editImportantPagesObject()
    {
        $tpl = $this->tpl;
        $ilToolbar = $this->toolbar;
        $ilTabs = $this->tabs;
        $lng = $this->lng;
        $ilCtrl = $this->ctrl;

        $this->checkPermission("edit_wiki_navigation");

        ilUtil::sendInfo($lng->txt("wiki_navigation_info"));
        
        $ipages = ilObjWiki::_lookupImportantPagesList($this->object->getId());
        $ipages_ids = array();
        foreach ($ipages as $i) {
            $ipages_ids[] = $i["page_id"];
        }

        // list pages
        include_once("./Modules/Wiki/classes/class.ilWikiPage.php");
        $pages = ilWikiPage::getAllWikiPages($this->object->getId());
        $options = array("" => $lng->txt("please_select"));
        foreach ($pages as $p) {
            if (!in_array($p["id"], $ipages_ids)) {
                $options[$p["id"]] = ilUtil::shortenText($p["title"], 60, true);
            }
        }
        if (count($options) > 0) {
            include_once("./Services/Form/classes/class.ilSelectInputGUI.php");
            $si = new ilSelectInputGUI($lng->txt("wiki_pages"), "imp_page_id");
            $si->setOptions($options);
            $si->setInfo($lng->txt(""));
            $ilToolbar->addInputItem($si);
            $ilToolbar->setFormAction($ilCtrl->getFormAction($this));
            $ilToolbar->addFormButton($lng->txt("add"), "addImportantPage");
        }


        $ilTabs->activateTab("settings");
        $this->setSettingsSubTabs("imp_pages");

        include_once("./Modules/Wiki/classes/class.ilImportantPagesTableGUI.php");
        $imp_table = new ilImportantPagesTableGUI($this, "editImportantPages");

        $tpl->setContent($imp_table->getHTML());
    }

    public function addImportantPageObject()
    {
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;

        $this->checkPermission("edit_wiki_navigation");

        if ($_POST["imp_page_id"] > 0) {
            $this->object->addImportantPage((int) $_POST["imp_page_id"]);
            ilUtil::sendSuccess($lng->txt("wiki_imp_page_added"), true);
        }
        $ilCtrl->redirect($this, "editImportantPages");
    }

    public function confirmRemoveImportantPagesObject()
    {
        $ilCtrl = $this->ctrl;
        $tpl = $this->tpl;
        $lng = $this->lng;

        if (!is_array($_POST["imp_page_id"]) || count($_POST["imp_page_id"]) == 0) {
            ilUtil::sendInfo($lng->txt("no_checkbox"), true);
            $ilCtrl->redirect($this, "editImportantPages");
        } else {
            include_once("./Services/Utilities/classes/class.ilConfirmationGUI.php");
            $cgui = new ilConfirmationGUI();
            $cgui->setFormAction($ilCtrl->getFormAction($this));
            $cgui->setHeaderText($lng->txt("wiki_sure_remove_imp_pages"));
            $cgui->setCancel($lng->txt("cancel"), "editImportantPages");
            $cgui->setConfirm($lng->txt("remove"), "removeImportantPages");

            foreach ($_POST["imp_page_id"] as $i) {
                $cgui->addItem("imp_page_id[]", $i, ilWikiPage::lookupTitle((int) $i));
            }

            $tpl->setContent($cgui->getHTML());
        }
    }

    public function removeImportantPagesObject()
    {
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;

        $this->checkPermission("edit_wiki_navigation");

        if (is_array($_POST["imp_page_id"])) {
            foreach ($_POST["imp_page_id"] as $i) {
                $this->object->removeImportantPage((int) $i);
            }
        }
        ilUtil::sendSuccess($lng->txt("wiki_removed_imp_pages"), true);
        $ilCtrl->redirect($this, "editImportantPages");
    }

    public function saveOrderingAndIndentObject()
    {
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;

        $this->checkPermission("edit_wiki_navigation");

        $this->object->saveOrderingAndIndentation($_POST["ord"], $_POST["indent"]);
        ilUtil::sendSuccess($lng->txt("wiki_ordering_and_indent_saved"), true);
        $ilCtrl->redirect($this, "editImportantPages");
    }

    public function setAsStartPageObject()
    {
        $ilCtrl = $this->ctrl;
        $lng = $this->lng;

        $this->checkPermission("edit_wiki_navigation");

        if (!is_array($_POST["imp_page_id"]) || count($_POST["imp_page_id"]) != 1) {
            ilUtil::sendInfo($lng->txt("wiki_select_one_item"), true);
        } else {
            $this->object->removeImportantPage((int) $_POST["imp_page_id"][0]);
            $this->object->setStartPage(ilWikiPage::lookupTitle((int) $_POST["imp_page_id"][0]));
            $this->object->update();
            ilUtil::sendSuccess($this->lng->txt("msg_obj_modified"), true);
        }
        $ilCtrl->redirect($this, "editImportantPages");
    }


    public function exportHTML()
    {
        $cont_exp = new Export\WikiHtmlExport($this->object);

        $format = explode("_", $_POST["format"]);
        if ($format[1] == "comments") {
            $cont_exp->setMode(Export\WikiHtmlExport::MODE_COMMENTS);
        }

        $cont_exp->buildExportFile();
    }
    
    public static function lookupSubObjectTitle($a_wiki_id, $a_page_id)
    {
        include_once "Modules/Wiki/classes/class.ilWikiPage.php";
        $page = new ilWikiPage($a_page_id);
        if ($page->getWikiId() == $a_wiki_id) {
            return $page->getTitle();
        }
    }
    
    public function getSubObjectTitle($a_id, $a_type)
    {
        include_once "Modules/Wiki/classes/class.ilWikiPage.php";
        return ilWikiPage::lookupTitle($a_id);
    }

    public function showTemplateSelectionObject()
    {
        $lng = $this->lng;
        $tpl = $this->tpl;
        $ilTabs = $this->tabs;
        $ilCtrl = $this->ctrl;


        $ilCtrl->setParameterByClass("ilobjwikigui", "from_page", ilWikiUtil::makeUrlTitle($_GET["from_page"]));
        $ilTabs->clearTargets();
        ilUtil::sendInfo($lng->txt("wiki_page_not_exist_select_templ"));

        $form = $this->initTemplateSelectionForm();
        $tpl->setContent($form->getHTML());
    }

    public function initTemplateSelectionForm()
    {
        $lng = $this->lng;
        $ilCtrl = $this->ctrl;

        include_once("Services/Form/classes/class.ilPropertyFormGUI.php");
        $form = new ilPropertyFormGUI();

        // page name
        $hi = new ilHiddenInputGUI("page");
        $hi->setValue($_GET["page"]);
        $form->addItem($hi);

        // page template
        $radg = new ilRadioGroupInputGUI($lng->txt("wiki_page_template"), "page_templ");
        $radg->setRequired(true);

        if ($this->object->getEmptyPageTemplate()) {
            $op1 = new ilRadioOption($lng->txt("wiki_empty_page"), 0);
            $radg->addOption($op1);
        }

        include_once("./Modules/Wiki/classes/class.ilWikiPageTemplate.php");
        $wt = new ilWikiPageTemplate($this->object->getId());
        $ts = $wt->getAllInfo(ilWikiPageTemplate::TYPE_NEW_PAGES);
        foreach ($ts as $t) {
            $op = new ilRadioOption($t["title"], $t["wpage_id"]);
            $radg->addOption($op);
        }

        $form->addItem($radg);

        // save and cancel commands
        $form->addCommandButton("createPageUsingTemplate", $lng->txt("wiki_create_page"));
        $form->addCommandButton("cancelCreationPageUsingTemplate", $lng->txt("cancel"));

        $form->setTitle($lng->txt("wiki_new_page") . ": " . $_GET["page"]);
        $form->setFormAction($ilCtrl->getFormAction($this));

        return $form;
    }

    public function createPageUsingTemplateObject()
    {
        $tpl = $this->tpl;
        $lng = $this->lng;
        $ilCtrl = $this->ctrl;

        $form = $this->initTemplateSelectionForm();
        if ($form->checkInput()) {
            $a_page = $_POST["page"];
            $this->object->createWikiPage($a_page, (int) $_POST["page_templ"]);

            // redirect to newly created page
            $ilCtrl->setParameterByClass("ilwikipagegui", "page", ilWikiUtil::makeUrlTitle(($a_page)));
            $ilCtrl->redirectByClass("ilwikipagegui", "edit");

            ilUtil::sendSuccess($lng->txt("msg_obj_modified"), true);
            $ilCtrl->redirect($this, "");
        } else {
            $form->setValuesByPost();
            $tpl->setContent($form->getHtml());
        }
    }

    public function cancelCreationPageUsingTemplateObject()
    {
        $ilCtrl = $this->ctrl;

        // redirect to newly created page
        $ilCtrl->setParameterByClass("ilwikipagegui", "page", ilWikiUtil::makeUrlTitle(($_GET["from_page"])));
        $ilCtrl->redirectByClass("ilwikipagegui", "preview");
    }

    protected function checkPermissionBool($a_perm, $a_cmd = "", $a_type = "", $a_ref_id = null)
    {
        if ($a_perm == "create") {
            return parent::checkPermissionBool($a_perm, $a_cmd, $a_type, $a_ref_id);
        } else {
            if (!$a_ref_id) {
                $a_ref_id = $this->object->getRefId();
            }
            include_once("./Modules/Wiki/classes/class.ilWikiPerm.php");
            return ilWikiPerm::check($a_perm, $a_ref_id, $a_cmd);
        }
    }


    //
    // User HTML Export
    //

    public function initUserHTMLExportObject()
    {
        $this->log->debug("init: " . $this->req_with_comments);
        $this->checkPermission("wiki_html_export");
        $this->object->initUserHTMLExport($this->req_with_comments);
    }

    public function startUserHTMLExportObject()
    {
        $this->log->debug("start: " . $this->req_with_comments);
        $this->checkPermission("wiki_html_export");
        $this->object->startUserHTMLExport($this->req_with_comments);
    }

    public function getUserHTMLExportProgressObject()
    {
        $this->log->debug("get progress: " . $this->req_with_comments);
        $this->checkPermission("wiki_html_export");
        $p = $this->object->getUserHTMLExportProgress($this->req_with_comments);

        include_once("./Services/UIComponent/ProgressBar/classes/class.ilProgressBar.php");
        $pb = ilProgressBar::getInstance();
        $pb->setCurrent($p["progress"]);

        $r = new stdClass();
        $r->progressBar = $pb->render();
        $r->status = $p["status"];
        include_once("./Services/JSON/classes/class.ilJsonUtil.php");
        $this->log->debug("status: " . $r->status);
        echo(ilJsonUtil::encode($r));
        exit;
    }

    public function downloadUserHTMLExportObject()
    {
        $this->log->debug("download");
        $this->checkPermission("wiki_html_export");
        $this->object->deliverUserHTMLExport();
    }

    public function downloadUserHTMLExportWithCommentsObject()
    {
        $this->log->debug("download");
        $this->checkPermission("wiki_html_export");
        $this->object->deliverUserHTMLExport(true);
    }

    protected function triggerAssignmentTool()
    {
        if (!is_object($this->object)) {
            return;
        }
        $ass_info = ilExcRepoObjAssignment::getInstance()->getAssignmentInfoOfObj(
            $this->object->getRefId(),
            $this->user->getId()
        );
        if (count($ass_info) > 0) {
            $ass_ids = array_map(function ($i) {
                return $i->getId();
            }, $ass_info);
            $this->tool_context->current()->addAdditionalData(ilExerciseGSToolProvider::SHOW_EXC_ASSIGNMENT_INFO, true);
            $this->tool_context->current()->addAdditionalData(ilExerciseGSToolProvider::EXC_ASS_IDS, $ass_ids);
            $this->tool_context->current()->addAdditionalData(
                ilExerciseGSToolProvider::EXC_ASS_BUTTONS,
                $this->getAssignmentButtons()
            );
        }
    }

    protected function getAssignmentButtons()
    {
        $ilCtrl = $this->ctrl;
        $ui = $this->ui;
        $lng = $this->lng;

        $ass_info = ilExcRepoObjAssignment::getInstance()->getAssignmentInfoOfObj(
            $this->object->getRefId(),
            $this->user->getId()
        );
        $buttons = [];
        foreach ($ass_info as $i) {     // should be only one
            $ass = new ilExAssignment($i->getId());
            $times_up = $ass->afterDeadlineStrict();

            // submit button
            if (!$times_up) {
                $ilCtrl->setParameterByClass("ilwikipagegui", "ass", $ass->getId());
                $submit_link = $ilCtrl->getLinkTargetByClass("ilwikipagegui", "finalizeAssignment");
                $ilCtrl->setParameterByClass("ilwikipagegui", "ass", "");

                $buttons[$i->getId()][] = $ui->factory()->button()->primary($lng->txt("wiki_finalize_wiki"), $submit_link);
            }

            // submitted files
            include_once "Modules/Exercise/classes/class.ilExSubmission.php";
            $submission = new ilExSubmission($ass, $this->user->getId());
            if ($submission->hasSubmitted()) {
                $submitted = $submission->getSelectedObject();
                if ($submitted["ts"] != "") {
                    $ilCtrl->setParameterByClass("ilwikipagegui", "ass", $ass->getId());
                }
                $dl_link = $ilCtrl->getLinkTargetByClass("ilwikipagegui", "downloadExcSubFile");
                $ilCtrl->setParameterByClass("ilwikipagegui", "ass", "");
                $buttons[$i->getId()][] = $ui->factory()->button()->standard($lng->txt("wiki_download_submission"), $dl_link);
            }
        }
        return $buttons;
    }
}