class.ilObject2GUI.php

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<?php
/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */
 
include_once("./Services/Object/classes/class.ilObjectGUI.php");
 
abstract class ilObject2GUI extends ilObjectGUI
{
        protected $object_id;
        protected $node_id;
        protected $creation_forms = array();
        protected $id_type = array();
        protected $parent_id;
        public $tree;
        protected $access_handler;
 
        const OBJECT_ID = 0;
        const REPOSITORY_NODE_ID = 1;
        const WORKSPACE_NODE_ID = 2;
        const REPOSITORY_OBJECT_ID = 3;
        const WORKSPACE_OBJECT_ID = 4;
        const PORTFOLIO_OBJECT_ID = 5;
        
        function __construct($a_id = 0, $a_id_type = self::REPOSITORY_NODE_ID, $a_parent_node_id = 0)
        {
                global $objDefinition, $tpl, $ilCtrl, $ilErr, $lng, $ilTabs, $tree, $ilAccess;
                
                if (!isset($ilErr))
                {
                        $ilErr = new ilErrorHandling();
                        $ilErr->setErrorHandling(PEAR_ERROR_CALLBACK,array($ilErr,'errorHandler'));
                }
                else
                {
                        $this->ilErr =& $ilErr;
                }
 
                $this->id_type = $a_id_type;
                $this->parent_id = $a_parent_node_id;
                $this->type = $this->getType();
                $this->html = "";
                
                // use globals instead?
                $this->tabs_gui = $ilTabs;
                $this->objDefinition = $objDefinition;
                $this->tpl = $tpl;
                $this->ctrl = $ilCtrl;
                $this->lng = $lng;
 
                $params = array();              
                switch($this->id_type)
                {
                        case self::REPOSITORY_NODE_ID:
                                $this->node_id = $a_id;
                                $this->object_id = ilObject::_lookupObjectId($this->node_id);
                                $this->tree = $tree;
                                $this->access_handler = $ilAccess;
                                $this->call_by_reference = true;  // needed for prepareOutput()
                                $params[] = "ref_id";
                                break;
 
                        case self::REPOSITORY_OBJECT_ID:
                                $this->object_id = $a_id;
                                $this->tree = $tree;
                                $this->access_handler = $ilAccess;
                                $params[] = "obj_id"; // ???
                                break;
 
                        case self::WORKSPACE_NODE_ID:
                                global $ilUser;
                                $this->node_id = $a_id;
                                include_once "Services/PersonalWorkspace/classes/class.ilWorkspaceTree.php";
                                $this->tree = new ilWorkspaceTree($ilUser->getId());
                                $this->object_id = $this->tree->lookupObjectId($this->node_id);                         
                                include_once "Services/PersonalWorkspace/classes/class.ilWorkspaceAccessHandler.php";
                                $this->access_handler = new ilWorkspaceAccessHandler($this->tree);
                                $params[] = "wsp_id";
                                break;
 
                        case self::WORKSPACE_OBJECT_ID:
                                global $ilUser;
                                $this->object_id = $a_id;
                                include_once "Services/PersonalWorkspace/classes/class.ilWorkspaceTree.php";
                                $this->tree = new ilWorkspaceTree($ilUser->getId());
                                include_once "Services/PersonalWorkspace/classes/class.ilWorkspaceAccessHandler.php";
                                $this->access_handler = new ilWorkspaceAccessHandler($this->tree);
                                $params[] = "obj_id"; // ???
                                break;
                        
                        case self::PORTFOLIO_OBJECT_ID:
                                $this->object_id = $a_id;
                                include_once('./Modules/Portfolio/classes/class.ilPortfolioAccessHandler.php');
                                $this->access_handler = new ilPortfolioAccessHandler();
                                $params[] = "prt_id";
                                break;
 
                        case self::OBJECT_ID:
                                $this->object_id = $a_id;
                                include_once "Services/Object/classes/class.ilDummyAccessHandler.php";
                            $this->access_handler = new ilDummyAccessHandler();
                                $params[] = "obj_id";
                                break;
                }
                $this->ctrl->saveParameter($this, $params);
 
 
                
                // old stuff for legacy code (obsolete?)
                if(!$this->object_id)
                {
                        $this->creation_mode = true;
                }
                if($this->node_id)
                {
                        // add parent node id if missing
                        if(!$this->parent_id && $this->tree)
                        {
                                $this->parent_id = $this->tree->getParentId($this->node_id);
                        }
                }
                $this->ref_id = $this->node_id;
                $this->obj_id = $this->object_id;
                
 
 
                $this->assignObject();
                
                // set context
                if (is_object($this->object))
                {
                        $this->ctrl->setContext($this->object->getId(), $this->object->getType());
                }
                
                $this->afterConstructor();
        }
        
        protected function afterConstructor()
        {
        }
        
        function executeCommand()
        {
                global $rbacsystem;
 
                $next_class = $this->ctrl->getNextClass($this);
                $cmd = $this->ctrl->getCmd();
                
                $this->prepareOutput(); 
 
                switch($next_class)
                {
                        case "ilworkspaceaccessgui";            
                                if($this->node_id)
                                {
                                        $this->tabs_gui->activateTab("id_permissions");
 
                                        include_once('./Services/PersonalWorkspace/classes/class.ilWorkspaceAccessGUI.php');
                                        $wspacc = new ilWorkspaceAccessGUI($this->node_id, $this->getAccessHandler());
                                        $this->ctrl->forwardCommand($wspacc);
                                        break;
                                }
                        
                        default:                                
                                if(!$cmd)
                                {
                                        $cmd = "render";
                                }
                                return $this->$cmd();
                }
 
                return true;
        }
 
        final protected function assignObject()
        {
                if ($this->object_id != 0)
                {
                        switch($this->id_type)
                        {                               
                                case self::OBJECT_ID:
                                case self::REPOSITORY_OBJECT_ID:
                                case self::WORKSPACE_OBJECT_ID:
                                case self::PORTFOLIO_OBJECT_ID:
                                        $this->object = ilObjectFactory::getInstanceByObjId($this->object_id);
                                        break;
 
                                case self::REPOSITORY_NODE_ID:
                                        $this->object = ilObjectFactory::getInstanceByRefId($this->node_id);
                                        break;
 
                                case self::WORKSPACE_NODE_ID:
                                        // to be discussed
                                        $this->object = ilObjectFactory::getInstanceByObjId($this->object_id);
                                        break;
                        }
                }
        }
        
        protected function getAccessHandler()
        {
                return $this->access_handler;
        }
 
        protected function setLocator()
        {
                global $ilLocator, $tpl;
 
                if ($this->omit_locator)
                {
                        return;
                }
 
                switch($this->id_type)
                {
                        case self::REPOSITORY_NODE_ID:
                                $ref_id = $this->node_id
                                        ? $this->node_id
                                        : $this->parent_id;
                                $ilLocator->addRepositoryItems($ref_id);
                                
                                // not so nice workaround: todo: handle $ilLocator as tabs in ilTemplate
                                if ($_GET["admin_mode"] == "" &&
                                        strtolower($this->ctrl->getCmdClass()) == "ilobjrolegui")
                                {
                                        $this->ctrl->setParameterByClass("ilobjrolegui",
                                                "rolf_ref_id", $_GET["rolf_ref_id"]);
                                        $this->ctrl->setParameterByClass("ilobjrolegui",
                                                "obj_id", $_GET["obj_id"]);
                                        $ilLocator->addItem($this->lng->txt("role"),
                                                $this->ctrl->getLinkTargetByClass(array("ilpermissiongui",
                                                        "ilobjrolegui"), "perm"));
                                }
                                
                                // in workspace this is done in ilPersonalWorkspaceGUI
                                if($this->object_id)
                                {
                                        $this->addLocatorItems();
                                }
                                $tpl->setLocator();
                                
                                break;
 
                        case self::WORKSPACE_NODE_ID:
                                // :TODO:
                                break;
                }
 
                
        }
 
        public  function delete()
        {
                switch($this->id_type)
                {
                        case self::REPOSITORY_NODE_ID:
                        case self::REPOSITORY_OBJECT_ID:
                                return parent::deleteObject();
 
                        case self::WORKSPACE_NODE_ID:
                        case self::WORKSPACE_OBJECT_ID:
                                return $this->deleteConfirmation();
 
                        case self::OBJECT_ID:
                        case self::PORTFOLIO_OBJECT_ID:
                                // :TODO: should this ever occur? 
                                break;
                }
        }
 
        protected function deleteConfirmation()
        {
                global $lng, $tpl, $objDefinition;
 
                $node_id = (int)$_REQUEST["item_ref_id"];
                if (!$node_id)
                {
                        ilUtil::sendFailure($lng->txt("no_checkbox"), true);
                        $this->ctrl->redirect($this, "");
                }
 
                // on cancel or fail we return to parent node
                $parent_node = $this->tree->getParentId($node_id);
                $this->ctrl->setParameter($this, "wsp_id", $parent_node);
 
                include_once("./Services/Utilities/classes/class.ilConfirmationGUI.php");
                $cgui = new ilConfirmationGUI();
                $cgui->setHeaderText($lng->txt("info_delete_sure")."<br/>".
                        $lng->txt("info_delete_warning_no_trash"));
 
                $cgui->setFormAction($this->ctrl->getFormAction($this));
                $cgui->setCancel($lng->txt("cancel"), "cancelDelete");
                $cgui->setConfirm($lng->txt("confirm"), "confirmedDelete");
 
            $a_ids = array($node_id);
                foreach ($a_ids as $node_id)
                {
                        $children = $this->tree->getSubTree($this->tree->getNodeData($node_id));
                        foreach($children as $child)
                        {
                                $node_id = $child["wsp_id"];
                                $obj_id = $this->tree->lookupObjectId($node_id);
                                $type = ilObject::_lookupType($obj_id);
                                $title = call_user_func(array(ilObjectFactory::getClassByType($type),'_lookupTitle'), $obj_id);
 
                                // if anything fails, abort the whole process
                                if(!$this->checkPermissionBool("delete", "", "", $node_id))
                                {
                                        ilUtil::sendFailure($lng->txt("msg_no_perm_delete")." ".$title, true);
                                        $this->ctrl->redirect($this);
                                }
 
                                $cgui->addItem("id[]", $node_id, $title,
                                        ilObject::_getIcon($obj_id, "small", $type),
                                        $lng->txt("icon")." ".$lng->txt("obj_".$type));
                        }
                }
                
                $tpl->setContent($cgui->getHTML());
        }
 
        public function confirmedDelete()
        {
                switch($this->id_type)
                {
                        case self::REPOSITORY_NODE_ID:
                        case self::REPOSITORY_OBJECT_ID:
                                return parent::confirmedDeleteObject();
 
                        case self::WORKSPACE_NODE_ID:
                        case self::WORKSPACE_OBJECT_ID:
                                return $this->deleteConfirmedObjects();
 
                        case self::OBJECT_ID:
                        case self::PORTFOLIO_OBJECT_ID:
                                // :TODO: should this ever occur?
                                break;
                }
        }
 
        protected function deleteConfirmedObjects()
        {
                global $lng, $objDefinition;
 
                if(sizeof($_POST["id"]))
                {                       
                        // #18797 - because of parent/child relations gather all nodes first
                        $del_nodes = array();
                        foreach($_POST["id"] as $node_id)
                        {                               
                                $del_nodes[$node_id] = $this->tree->getNodeData($node_id);                              
                        }
                                                                
                        foreach($del_nodes as $node_id => $node)
                        {                               
                                // tree/reference
                                $this->tree->deleteReference($node_id);
                                if($this->tree->isInTree($node_id))
                                {                                                                       
                                        $this->tree->deleteTree($node);
                                }
                                
                                // permission
                                $this->getAccessHandler()->removePermission($node_id);
 
                                // object
                                $object = ilObjectFactory::getInstanceByObjId($node["obj_id"], false);
                                if($object)
                                {
                                        $object->delete();
                                }                       
                        }
 
                        ilUtil::sendSuccess($lng->txt("msg_removed"), true);
                }
                else
                {
                        ilUtil::sendFailure($lng->txt("no_checkbox"), true);
                }
 
                $this->ctrl->redirect($this, "");
        }
        
        public function getHTML() { return parent::getHTML(); }
 
        final public function withReferences() { return parent::withReferences(); }
        final public function setCreationMode($a_mode = true) { return parent::setCreationMode($a_mode); }
        final public function getCreationMode() { return parent::getCreationMode(); }
        final public function prepareOutput($a_show_subobjects = true) { return parent::prepareOutput($a_show_subobjects); }
        protected function setTitleAndDescription() { return parent::setTitleAndDescription(); }
        final protected function showUpperIcon() { return parent::showUpperIcon(); }
//      final private function showMountWebfolderIcon() { return parent::showMountWebfolderIcon(); }
        final protected function omitLocator($a_omit = true) { return parent::omitLocator($a_omit); }
        final protected  function getTargetFrame($a_cmd, $a_target_frame = "") { return parent::getTargetFrame($a_cmd, $a_target_frame); }
        final protected  function setTargetFrame($a_cmd, $a_target_frame) { return parent::setTargetFrame($a_cmd, $a_target_frame); }
        final public function isVisible($a_ref_id,$a_type) { return parent::isVisible($a_ref_id,$a_type); }
        final protected function getCenterColumnHTML() { return parent::getCenterColumnHTML(); }
        final protected function getRightColumnHTML() { return parent::getRightColumnHTML(); }
        final protected function setColumnSettings(ilColumnGUI $column_gui) { return parent::setColumnSettings($column_gui); }
        final protected function checkPermission($a_perm, $a_cmd = "", $a_type = "", $a_ref_id = null) { return parent::checkPermission($a_perm, $a_cmd, $a_type, $a_ref_id); }
        
        // -> ilContainerGUI
        final protected function showPossibleSubObjects() { return parent::showPossibleSubObjects(); }
        // -> ilRepUtilGUI
        final public  function trash() { return parent::trashObject(); }                // done
        // -> ilRepUtil
        final public function undelete() { return parent::undeleteObject(); } // done
        final public function cancelDelete() { return parent::cancelDeleteObject(); } // ok
        final public function removeFromSystem() { return parent::removeFromSystemObject(); } // done 
        final protected function redirectToRefId($a_ref_id, $a_cmd = "") { return parent::redirectToRefId(); } // ok
        
        // -> stefan
        final protected function fillCloneTemplate($a_tpl_varname,$a_type) { return parent::fillCloneTemplate($a_tpl_varname,$a_type); }
        final protected function fillCloneSearchTemplate($a_tpl_varname,$a_type) { return parent::fillCloneSearchTemplate($a_tpl_varname,$a_type); }
        final protected function searchCloneSource() { return parent::searchCloneSourceObject(); }
        final public function cloneAll() { return parent::cloneAllObject(); }
        final protected function buildCloneSelect($existing_objs) { return parent::buildCloneSelect($existing_objs); }
 
        // -> ilAdministration
        final private function displayList() { return parent::displayList(); }
//      final private function setAdminTabs() { return parent::setAdminTabs(); }
//      final public function getAdminTabs() { return parent::getAdminTabs(); }
        final protected function addAdminLocatorItems($a_do_not_add_object = false) { return parent::addAdminLocatorItems($a_do_not_add_object); }
 
        public function view()
        {
                switch($this->id_type)
                {
                        case self::REPOSITORY_NODE_ID:
                        case self::REPOSITORY_OBJECT_ID:
                                return parent::viewObject();
 
                        case self::WORKSPACE_NODE_ID:
                        case self::WORKSPACE_OBJECT_ID:
                                return $this->render();
 
                        case self::OBJECT_ID:
                        case self::PORTFOLIO_OBJECT_ID:
                                // :TODO: should this ever occur?  do nothing or edit() ?!
                                break;
                }
        }
 
        protected function setTabs()
        {
                global $ilTabs, $lng;
 
                switch($this->id_type)
                {
                        case self::REPOSITORY_NODE_ID:
                        case self::REPOSITORY_OBJECT_ID:
                                if ($this->checkPermissionBool("edit_permission"))
                                {
                                        $ilTabs->addTab("id_permissions",
                                                $lng->txt("perm_settings"),
                                                $this->ctrl->getLinkTargetByClass(array(get_class($this), "ilpermissiongui"), "perm"));
                                }
                                break;
 
                        case self::WORKSPACE_NODE_ID:
                        case self::WORKSPACE_OBJECT_ID:
                                // only files and blogs can be shared for now
                                if ($this->checkPermissionBool("edit_permission") && in_array($this->type, array("file", "blog")) && $this->node_id)
                                {
                                        $ilTabs->addTab("id_permissions",
                                                $lng->txt("wsp_permissions"),
                                                $this->ctrl->getLinkTargetByClass(array(get_class($this), "ilworkspaceaccessgui"), "share"));
                                }
                                break;
                }
        }
        
//      final private function setSubObjects($a_sub_objects = "") { die("ilObject2GUI::setSubObjects() is deprecated."); }
//      final public function getFormAction($a_cmd, $a_formaction = "") { die("ilObject2GUI::getFormAction() is deprecated."); }
//      final protected  function setFormAction($a_cmd, $a_formaction) { die("ilObject2GUI::setFormAction() is deprecated."); }
        final protected  function getReturnLocation($a_cmd, $a_location ="") { die("ilObject2GUI::getReturnLocation() is deprecated."); }
        final protected  function setReturnLocation($a_cmd, $a_location) { die("ilObject2GUI::setReturnLocation() is deprecated."); }
        final protected function showActions() { die("ilObject2GUI::showActions() is deprecated."); }
        final protected function getTabs() {nj(); die("ilObject2GUI::getTabs() is deprecated."); }
        final protected function __showButton($a_cmd,$a_text,$a_target = '') { die("ilObject2GUI::__showButton() is deprecated."); }
        final protected function hitsperpageObject() { die("ilObject2GUI::hitsperpageObject() is deprecated."); }
        final protected function &__initTableGUI() { die("ilObject2GUI::__initTableGUI() is deprecated."); }
        final protected function __setTableGUIBasicData(&$tbl,&$result_set,$a_from = "") { die("ilObject2GUI::__setTableGUIBasicData() is deprecated."); }
 
        protected function addLocatorItems() {}
        
        abstract function getType();
        
//      final private function permObject() { parent::permObject(); }
//      final private function permSaveObject() { parent::permSaveObject(); }
//      final private function infoObject() { parent::infoObject(); }
//      final private function __buildRoleFilterSelect() { parent::__buildRoleFilterSelect(); }
//      final private function __filterRoles() { parent::__filterRoles(); }
//      final private function ownerObject() { parent::ownerObject(); }
//      final private function changeOwnerObject() { parent::changeOwnerObject(); }
//      final private function addRoleObject() { parent::addRoleObject(); }
//      final private function setActions($a_actions = "") { die("ilObject2GUI::setActions() is deprecated."); }
//      final protected function getActions() { die("ilObject2GUI::getActions() is deprecated."); }
 
        public function create() { parent::createObject(); }
        public function save() { parent::saveObject(); }
        public function edit() { parent::editObject(); }
        public function update() { parent::updateObject(); }
        public function cancel() { parent::cancelObject(); }
 
        protected function initCreationForms($a_new_type)
        {
                $forms = parent::initCreationForms($a_new_type);
                
                // cloning doesn't work in workspace yet
                if($this->id_type == self::WORKSPACE_NODE_ID)
                {
                        unset($forms[self::CFORM_CLONE]);
                }
 
                return $forms;
        }
        
        function importFile()
        {
                parent::importFileObject($this->parent_id);
        }
 
        protected function putObjectInTree(ilObject $a_obj, $a_parent_node_id = null)
        {
                global $rbacreview, $ilUser, $objDefinition;
 
                $this->object_id = $a_obj->getId();
 
                if(!$a_parent_node_id)
                {
                        $a_parent_node_id = $this->parent_id;
                }               
                
                // add new object to custom parent container
                if((int)$_REQUEST["crtptrefid"])
                {
                        $a_parent_node_id = (int)$_REQUEST["crtptrefid"];
                }
 
                switch($this->id_type)
                {
                        case self::REPOSITORY_NODE_ID:
                        case self::REPOSITORY_OBJECT_ID:
                                if(!$this->node_id)
                                {
                                        $a_obj->createReference();
                                        $this->node_id = $a_obj->getRefId();
                                }
                                $a_obj->putInTree($a_parent_node_id);
                                $a_obj->setPermissions($a_parent_node_id);
 
                                // rbac log
                                include_once "Services/AccessControl/classes/class.ilRbacLog.php";
                                $rbac_log_roles = $rbacreview->getParentRoleIds($this->node_id, false);
                                $rbac_log = ilRbacLog::gatherFaPa($this->node_id, array_keys($rbac_log_roles), true);
                                ilRbacLog::add(ilRbacLog::CREATE_OBJECT, $this->node_id, $rbac_log);
 
                                $this->ctrl->setParameter($this, "ref_id", $this->node_id);
                                break;
 
                        case self::WORKSPACE_NODE_ID:
                        case self::WORKSPACE_OBJECT_ID:
                                if(!$this->node_id)
                                {
                                        $this->node_id = $this->tree->insertObject($a_parent_node_id, $this->object_id);
                                }
                                $this->getAccessHandler()->setPermissions($a_parent_node_id, $this->node_id);
 
                                $this->ctrl->setParameter($this, "wsp_id", $this->node_id);
                                break;
 
                        case self::OBJECT_ID:
                        case self::PORTFOLIO_OBJECT_ID:
                                // do nothing
                                break;
                }
                
                // BEGIN ChangeEvent: Record save object.
                require_once('Services/Tracking/classes/class.ilChangeEvent.php');
                ilChangeEvent::_recordWriteEvent($this->object_id, $ilUser->getId(), 'create');
                // END ChangeEvent: Record save object.
                        
                // use forced callback after object creation            
                self::handleAfterSaveCallback($a_obj, $_REQUEST["crtcb"]);              
        }
        
        public static function handleAfterSaveCallback(ilObject $a_obj, $a_callback_ref_id)
        {
                global $objDefinition;
                
                $a_callback_ref_id = (int)$a_callback_ref_id;           
                if($a_callback_ref_id)
                {
                        $callback_type = ilObject::_lookupType($a_callback_ref_id, true);
                        $class_name = "ilObj".$objDefinition->getClassName($callback_type)."GUI";
                        $location = $objDefinition->getLocation($callback_type);
                        include_once($location."/class.".$class_name.".php");
                        if (in_array(strtolower($class_name), array("ilobjitemgroupgui")))
                        {
                                $callback_obj = new $class_name($a_callback_ref_id);
                        }
                        else
                        {
                                $callback_obj = new $class_name(null, $a_callback_ref_id, true, false);
                        }
                        $callback_obj->afterSaveCallback($a_obj);
                }
        }
 
        protected function checkPermissionBool($a_perm, $a_cmd = "", $a_type = "", $a_node_id = null)
        {
                global $ilUser;
                
                if($a_perm == "create")
                {
                        if(!$a_node_id)
                        {
                                $a_node_id = $this->parent_id;
                        }
                        if($a_node_id)
                        {
                                return $this->getAccessHandler()->checkAccess($a_perm."_".$a_type, $a_cmd, $a_node_id);
                        }
                }
                else
                {
 
                        if (!$a_node_id)
                        {
                                $a_node_id = $this->node_id;
                        }
                        if($a_node_id)
                        {
                                return $this->getAccessHandler()->checkAccess($a_perm, $a_cmd, $a_node_id);
                        }
                }
                
                // if we do not have a node id, check if current user is owner
                if($this->obj_id && $this->object->getOwner() == $ilUser->getId())
                {
                        return true;
                }               
                return false;
        }
        
        protected function initHeaderAction($a_sub_type = null, $a_sub_id = null)
        {
                global $ilAccess; 
                
                if($this->id_type == self::WORKSPACE_NODE_ID)
                {
                        if(!$this->creation_mode && $this->object_id)
                        {
                                include_once "Services/Object/classes/class.ilCommonActionDispatcherGUI.php";
                                $dispatcher = new ilCommonActionDispatcherGUI(ilCommonActionDispatcherGUI::TYPE_WORKSPACE, 
                                        $this->getAccessHandler(), $this->getType(), $this->node_id, $this->object_id);
                                
                                $dispatcher->setSubObject($a_sub_type, $a_sub_id);
                                
                                include_once "Services/Object/classes/class.ilObjectListGUI.php";
                                ilObjectListGUI::prepareJSLinks($this->ctrl->getLinkTarget($this, "redrawHeaderAction", "", true), 
                                        $this->ctrl->getLinkTargetByClass(array("ilcommonactiondispatchergui", "ilnotegui"), "", "", true, false), 
                                        $this->ctrl->getLinkTargetByClass(array("ilcommonactiondispatchergui", "iltagginggui"), "", "", true, false));
                                
                                $lg = $dispatcher->initHeaderAction();
                                
                                if(is_object($lg))
                                {                                                               
                                        // to enable add to desktop / remove from desktop
                                        if($this instanceof ilDesktopItemHandling)
                                        {
                                                $lg->setContainerObject($this);
                                        }
 
                                        // for activation checks see ilObjectGUI
                                        // $lg->enableComments(true);
                                        $lg->enableNotes(true);
                                        // $lg->enableTags(true);
                                }
 
                                return $lg;
                        }
                }
                else
                {
                        return parent::initHeaderAction();
                }
        }
        
        protected function redrawHeaderAction()
        {
                parent::redrawHeaderActionObject();
        }
        
        protected function getPermanentLinkWidget($a_append = null, $a_center = false)
        {
                if($this->id_type == self::WORKSPACE_NODE_ID)
                {
                        $a_append .= "_wsp";
                }
                
                include_once('Services/PermanentLink/classes/class.ilPermanentLinkGUI.php');
                $plink = new ilPermanentLinkGUI($this->getType(), $this->node_id , $a_append);
                $plink->setIncludePermanentLinkText(false);
                $plink->setAlignCenter($a_center);
                return $plink->getHTML();
        }
        
        
        protected function handleAutoRating(ilObject $a_new_obj)
        {
                // only needed in repository
                if($this->id_type == self::REPOSITORY_NODE_ID)
                {
                        parent::handleAutoRating($a_new_obj);
                }                               
        }
}
 
?>