Repository explorer GUI class. More...

Inheritance diagram for ilRepositoryExplorerGUI:

Collaboration diagram for ilRepositoryExplorerGUI:

Public Member Functions
	__construct ($a_parent_obj, $a_parent_cmd)
	Constructor. More...

	getRootNode ()
	Get root node. More...

	getNodeContent ($a_node)
	Get node content. More...

	getNodeIcon ($a_node)
	Get node icon. More...

	getNodeIconAlt ($a_node)
	Get node icon alt text. More...

	isNodeHighlighted ($a_node)
	Is node highlighted? More...

	getNodeHref ($a_node)
	Get href for node. More...

	isNodeVisible ($a_node)
	Is node visible. More...

	sortChilds ($a_childs, $a_parent_node_id)
	Sort childs. More...

	getChildsOfNode ($a_parent_node_id)
	Get childs of node. More...

	isNodeClickable ($a_node)
	Is node clickable? More...

Public Member Functions inherited from ilTreeExplorerGUI
	__construct ($a_expl_id, $a_parent_obj, $a_parent_cmd, $a_tree)
	Constructor. More...

	getTree ()
	Get tree. More...

	setOrderField ($a_val, $a_numeric=false)
	Set order field. More...

	getOrderField ()
	Get order field. More...

	setTypeWhiteList ($a_val)
	Set type white list. More...

	getTypeWhiteList ()
	Get type white list. More...

	setTypeBlackList ($a_val)
	Set type black list. More...

	getTypeBlackList ()
	Get type black list. More...

	setPreloadChilds ($a_val)
	Set preload childs. More...

	getPreloadChilds ()
	Get preload childs. More...

	getSuccessorNode ($a_node_id, $a_type="")
	Get successor node (currently only(!) based on lft/rgt tree values) More...

	getChildsOfNode ($a_parent_node_id)
	Get childs of node. More...

	getNodeId ($a_node)
	Get id for node. More...

	getNodeIconAlt ($a_node)
	Get node icon alt attribute. More...

	getRootNode ()
	Get root node. More...

	setRootId ($a_root)

	setPathOpen ($a_id)
	Set node path to be opened. More...

	getHTML ()
	Get HTML. More...

Public Member Functions inherited from ilExplorerBaseGUI
	__construct ($a_expl_id, $a_parent_obj, $a_parent_cmd)
	Constructor. More...

	setMainTemplate (ilTemplate $a_main_tpl=null)
	Set main template (that is responsible for adding js/css) More...

	getRootNode ()
	Get root node. More...

	getChildsOfNode ($a_parent_node_id)
	Get childs of node. More...

	getNodeContent ($a_node)
	Get content of a node. More...

	getNodeId ($a_node)
	Get id of a node. More...

	getNodeHref ($a_node)
	Get href for node. More...

	nodeHasVisibleChilds ($a_node)
	Node has childs? More...

	sortChilds ($a_childs, $a_parent_node_id)
	Sort childs. More...

	getNodeIcon ($a_node)
	Get node icon path. More...

	getNodeIconAlt ($a_node)
	Get node icon alt attribute. More...

	getNodeTarget ($a_node)
	Get node target (frame) attribute. More...

	getNodeOnClick ($a_node)
	Get node onclick attribute. More...

	isNodeVisible ($a_node)
	Is node visible? More...

	isNodeHighlighted ($a_node)
	Is node highlighted? More...

	isNodeClickable ($a_node)
	Is node clickable? More...

	getId ()
	Get id of explorer element. More...

	setSkipRootNode ($a_val)
	Set skip root node. More...

	getSkipRootNode ()
	Get skip root node. More...

	setAjax ($a_val)
	Set ajax. More...

	getAjax ()
	Get ajax. More...

	setSecondaryHighlightedNodes ($a_val)
	Set secondary (background) highlighted nodes. More...

	getSecondaryHighlightedNodes ()
	Get secondary (background) highlighted nodes. More...

	setNodeOpen ($a_id)
	Set node to be opened (additional custom opened node, not standard expand behaviour) More...

	setSelectMode ($a_postvar, $a_multi=false)
	Set select mode (to deactivate, pass an empty string as postvar) More...

	setNodeSelected ($a_id)
	Set node to be opened (additional custom opened node, not standard expand behaviour) More...

	setOfflineMode ($a_val)
	Set offline mode. More...

	getOfflineMode ()
	Get offline mode. More...

	handleCommand ()
	Handle explorer internal command. More...

	getContainerId ()
	Get container id. More...

	openNode ()
	Open node. More...

	closeNode ()
	Close node. More...

	getNodeAsync ()
	Get node asynchronously. More...

	beforeRendering ()
	Before rendering. More...

	getOnLoadCode ()
	Get on load code. More...

	getHTML ()
	Get HTML. More...

	renderNode ($a_node, $tpl)
	Render node. More...

	renderChilds ($a_node_id, $tpl)
	Render childs. More...

	getDomNodeIdForNodeId ($a_node_id)
	Get DOM node id for node id. More...

	getNodeIdForDomNodeId ($a_dom_node_id)
	Get node id for dom node id. More...

	listItemStart ($tpl, $a_node)
	List item start. More...

	listItemEnd ($tpl)
	List item end. More...

	listStart ($tpl)
	List start. More...

	listEnd ($tpl)
	List end. More...

	isNodeOnclickEnabled ()

	setNodeOnclickEnabled ($nodeOnclickEnabled)

	isEnableDnd ()

	setEnableDnd ($enable_dnd)
	Enable Drag & Drop functionality. More...

Protected Attributes
	$settings

	$obj_definition

	$lng

	$ctrl

	$access

	$rbacsystem

	$db

	$user

	$type_grps = array()

	$session_materials = array()

Protected Attributes inherited from ilTreeExplorerGUI
	$lng

	$tree = null

	$order_field = ""

	$order_field_numeric = false

	$type_white_list = array()

	$type_black_list = array()

	$childs = array()

	$preloaded = false

	$preload_childs = false

	$root_node_data = null

	$all_childs = array()

Protected Attributes inherited from ilExplorerBaseGUI
	$log

	$ctrl

	$tpl

	$skip_root_node = false

	$ajax = false

	$custom_open_nodes = array()

	$selected_nodes = array()

	$select_postvar = ""

	$offline_mode = false

	$sec_highl_nodes = array()

	$enable_dnd = false

Additional Inherited Members
Static Public Member Functions inherited from ilExplorerBaseGUI
static	getLocalExplorerJsPath ()
	Get local path of explorer js. More...

static	getLocalJsTreeJsPath ()
	Get local path of jsTree js. More...

static	createHTMLExportDirs ($a_target_dir)
	Create html export directories. More...

static	init ($a_main_tpl=null)
	Init JS. More...

Protected Member Functions inherited from ilTreeExplorerGUI
	preloadChilds ()
	Preload childs. More...

	getRootId ()

Protected Member Functions inherited from ilExplorerBaseGUI
	isNodeSelectable ($a_node)
	Is node selectable? More...

	getNodeToggleOnClick ($a_node)
	Get onclick attribute for node toggling. More...

	getSelectOnClick ($a_node)
	Get onclick attribute for selecting radio/checkbox. More...

	getJSTreePlugins ()

Static Protected Attributes inherited from ilExplorerBaseGUI
static	$js_tree_path = "./libs/bower/bower_components/jstree/jquery.jstree.js"

static	$js_expl_path = "./Services/UIComponent/Explorer2/js/Explorer2.js"

Detailed Description

Repository explorer GUI class.

Author: Alex Killing alex..nosp@m.kill.nosp@m.ing@g.nosp@m.mx.d.nosp@m.e

Version: $Id$

Todo:: : isClickable, top node id

Definition at line 16 of file class.ilRepositoryExplorerGUI.php.

Constructor & Destructor Documentation

◆ __construct()

ilRepositoryExplorerGUI::__construct	(	$a_parent_obj,
		$a_parent_cmd
	)

Constructor.

Definition at line 64 of file class.ilRepositoryExplorerGUI.php.

    {
        global $DIC;
 
        $this->tree = $DIC->repositoryTree();
        $this->settings = $DIC->settings();
        $this->obj_definition = $DIC["objDefinition"];
        $this->lng = $DIC->language();
        $this->ctrl = $DIC->ctrl();
        $this->access = $DIC->access();
        $this->rbacsystem = $DIC->rbac()->system();
        $this->db = $DIC->database();
        $this->user = $DIC->user();
        $tree = $DIC->repositoryTree();
        $ilSetting = $DIC->settings();
        $objDefinition = $DIC["objDefinition"];
 
        $this->cur_ref_id = (int) $_GET["ref_id"];
 
        $this->top_node_id = 0;
        if ($ilSetting->get("rep_tree_limit_grp_crs") && $this->cur_ref_id > 0) {
            $path = $tree->getPathId($this->cur_ref_id);
            foreach ($path as $n) {
                if ($top_node > 0) {
                    break;
                }
                if (in_array(
                    ilObject::_lookupType(ilObject::_lookupObjId($n)),
                    array("crs", "grp")
                )) {
                    $this->top_node_id = $n;
                }
            }
        }
        
        parent::__construct("rep_exp", $a_parent_obj, $a_parent_cmd, $tree);
 
        $this->setSkipRootNode(false);
        $this->setAjax(true);
        $this->setOrderField("title");
        if ($ilSetting->get("repository_tree_pres") == "" ||
            ($ilSetting->get("rep_tree_limit_grp_crs") && $this->top_node_id == 0)) {
            $this->setTypeWhiteList($objDefinition->getExplorerContainerTypes());
        } elseif ($ilSetting->get("repository_tree_pres") == "all_types") {
            $white = array();
            foreach ($objDefinition->getSubObjectsRecursively("root") as $rtype) {
                if (/* $rtype["name"] != "itgr" && */ !$objDefinition->isSideBlock($rtype["name"])) {
                    $white[] = $rtype["name"];
                }
            }
            $this->setTypeWhiteList($white);
        }
        if ((int) $_GET["ref_id"] > 0) {
            $this->setPathOpen((int) $_GET["ref_id"]);
        }
    }

References $_GET, $DIC, $ilSetting, $n, $path, ilTreeExplorerGUI\$tree, $white, ilObject\_lookupObjId(), ilObject\_lookupType(), ilExplorerBaseGUI\setAjax(), ilTreeExplorerGUI\setOrderField(), ilTreeExplorerGUI\setPathOpen(), ilExplorerBaseGUI\setSkipRootNode(), settings(), ilTreeExplorerGUI\setTypeWhiteList(), and user().

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Member Function Documentation

◆ getChildsOfNode()

ilRepositoryExplorerGUI::getChildsOfNode ( $a_parent_node_id )

Get childs of node.

Parameters

return

Reimplemented from ilTreeExplorerGUI.

Definition at line 490 of file class.ilRepositoryExplorerGUI.php.

    {
        $rbacsystem = $this->rbacsystem;
        
        if (!$rbacsystem->checkAccess("read", $a_parent_node_id)) {
            return array();
        }
 
        $obj_id = ilObject::_lookupObjId($a_parent_node_id);
        if (!ilConditionHandler::_checkAllConditionsOfTarget($a_parent_node_id, $obj_id)) {
            return array();
        }
 
        return parent::getChildsOfNode($a_parent_node_id);
    }

References $rbacsystem, ilConditionHandler\_checkAllConditionsOfTarget(), and ilObject\_lookupObjId().

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◆ getNodeContent()

ilRepositoryExplorerGUI::getNodeContent ( $a_node )

Get node content.

Parameters

array

Returns

Reimplemented from ilExplorerBaseGUI.

Definition at line 142 of file class.ilRepositoryExplorerGUI.php.

    {
        $lng = $this->lng;
        
        $title = $a_node["title"];
                        
        if ($a_node["child"] == $this->getNodeId($this->getRootNode())) {
            if ($title == "ILIAS") {
                $title = $lng->txt("repository");
            }
        } elseif ($a_node["type"] == "sess" &&
            !trim($title)) {
            // #14367 - see ilObjSessionListGUI
            include_once('./Modules/Session/classes/class.ilSessionAppointment.php');
            $app_info = ilSessionAppointment::_lookupAppointment($a_node["obj_id"]);
            $title = ilSessionAppointment::_appointmentToString($app_info['start'], $app_info['end'], $app_info['fullday']);
        }
        
        return $title;
    }

References $lng, $title, ilSessionAppointment\_appointmentToString(), ilSessionAppointment\_lookupAppointment(), ilTreeExplorerGUI\getNodeId(), and getRootNode().

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◆ getNodeHref()

ilRepositoryExplorerGUI::getNodeHref ( $a_node )

Get href for node.

Parameters

mixed $a_node node object/array

Returns: string href attribute

Reimplemented from ilExplorerBaseGUI.

Definition at line 218 of file class.ilRepositoryExplorerGUI.php.

    {
        $ilCtrl = $this->ctrl;
 
        switch ($a_node["type"]) {
            case "root":
                $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", $a_node["child"]);
                $link = $ilCtrl->getLinkTargetByClass("ilrepositorygui", "");
                $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", $_GET["ref_id"]);
                return $link;
 
            case "cat":
                $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", $a_node["child"]);
                $link = $ilCtrl->getLinkTargetByClass("ilrepositorygui", "");
                $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", $_GET["ref_id"]);
                return $link;
 
            case "catr":
                $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", $a_node["child"]);
                $link = $ilCtrl->getLinkTargetByClass("ilrepositorygui", "redirect");
                $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", $_GET["ref_id"]);
                return $link;
 
            case "grp":
                $ilCtrl->setParameterByClass("ilobjgroupgui", "ref_id", $a_node["child"]);
                $link = $ilCtrl->getLinkTargetByClass(array("ilrepositorygui", "ilobjgroupgui"), "");
                $ilCtrl->setParameterByClass("ilobjgroupgui", "ref_id", $_GET["ref_id"]);
                return $link;
 
            case "grpr":
                $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", $a_node["child"]);
                $link = $ilCtrl->getLinkTargetByClass("ilrepositorygui", "redirect");
                $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", $_GET["ref_id"]);
                return $link;
 
            case "crs":
                $ilCtrl->setParameterByClass("ilobjcoursegui", "ref_id", $a_node["child"]);
                $link = $ilCtrl->getLinkTargetByClass(array("ilrepositorygui", "ilobjcoursegui"), "view");
                $ilCtrl->setParameterByClass("ilobjcoursegui", "ref_id", $_GET["ref_id"]);
                return $link;
                
            case "crsr":
                $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", $a_node["child"]);
                $link = $ilCtrl->getLinkTargetByClass("ilrepositorygui", "redirect");
                $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", $_GET["ref_id"]);
                return $link;
 
            case 'rcrs':
                $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", $a_node["child"]);
                $link = $ilCtrl->getLinkTargetByClass("ilrepositorygui", "infoScreen");
                $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", $_GET["ref_id"]);
                return $link;
 
            case 'prg':
                $ilCtrl->setParameterByClass("ilobjstudyprogrammegui", "ref_id", $a_node["child"]);
                $link = $ilCtrl->getLinkTargetByClass(array("ilrepositorygui", "ilobjstudyprogrammegui"), "view");
                $ilCtrl->setParameterByClass("ilobjstudyprogrammegui", "ref_id", $_GET["ref_id"]);
                return $link;
 
            default:
                include_once('./Services/Link/classes/class.ilLink.php');
                return ilLink::_getStaticLink($a_node["child"], $a_node["type"], true);
 
        }
    }

References $_GET, $ctrl, $ilCtrl, and ilLink\_getStaticLink().

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◆ getNodeIcon()

ilRepositoryExplorerGUI::getNodeIcon ( $a_node )

Get node icon.

Parameters

array

Returns

Reimplemented from ilExplorerBaseGUI.

Definition at line 169 of file class.ilRepositoryExplorerGUI.php.

    {
        $obj_id = ilObject::_lookupObjId($a_node["child"]);
        return ilObject::_getIcon($obj_id, "tiny", $a_node["type"]);
    }

References ilObject\_getIcon(), and ilObject\_lookupObjId().

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◆ getNodeIconAlt()

ilRepositoryExplorerGUI::getNodeIconAlt ( $a_node )

Get node icon alt text.

Parameters

array node array

Returns: string alt text

Reimplemented from ilTreeExplorerGUI.

Definition at line 181 of file class.ilRepositoryExplorerGUI.php.

    {
        $lng = $this->lng;
 
        if ($a_node["child"] == $this->getNodeId($this->getRootNode())) {
            $title = $a_node["title"];
            if ($title == "ILIAS") {
                $title = $lng->txt("repository");
            }
            return $lng->txt("icon") . " " . $title;
        }
 
        
        return parent::getNodeIconAlt($a_node);
    }

References $lng, $title, ilTreeExplorerGUI\getNodeId(), and getRootNode().

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◆ getRootNode()

ilRepositoryExplorerGUI::getRootNode ( )

Get root node.

Parameters

return

Reimplemented from ilTreeExplorerGUI.

Definition at line 127 of file class.ilRepositoryExplorerGUI.php.

    {
        if ($this->top_node_id > 0) {
            return $this->getTree()->getNodeData($this->top_node_id);
        } else {
            return parent::getRootNode();
        }
    }

References ilTreeExplorerGUI\getTree().

Referenced by getNodeContent(), getNodeIconAlt(), and isNodeHighlighted().

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◆ isNodeClickable()

ilRepositoryExplorerGUI::isNodeClickable ( $a_node )

Is node clickable?

Parameters

mixed $a_node node object/array

Returns: boolean node clickable true/false

Reimplemented from ilExplorerBaseGUI.

Definition at line 512 of file class.ilRepositoryExplorerGUI.php.

    {
        $rbacsystem = $this->rbacsystem;
        $tree = $this->tree;
        $ilDB = $this->db;
        $ilUser = $this->user;
        $ilAccess = $this->access;
 
        $obj_id = ilObject::_lookupObjId($a_node["child"]);
        if (!ilConditionHandler::_checkAllConditionsOfTarget($a_node["child"], $obj_id)) {
            return false;
        }
 
        switch ($a_node["type"]) {
            case 'tst':
                if (!$rbacsystem->checkAccess("read", $a_node["child"])) {
                    return false;
                }
 
                $query = sprintf("SELECT * FROM tst_tests WHERE obj_fi=%s", $obj_id);
                $res = $ilDB->query($query);
                while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
                    return (bool) $row->complete;
                }
                return false;
 
            case 'svy':
                if (!$rbacsystem->checkAccess("read", $a_node["child"])) {
                    return false;
                }
 
                $query = sprintf("SELECT * FROM svy_svy WHERE obj_fi=%s", $obj_id);
                $res = $ilDB->query($query);
                while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
                    return (bool) $row->complete;
                }
                return false;
 
            // media pools can only be edited
            case "mep":
                if ($rbacsystem->checkAccess("read", $a_node["child"])) {
                    return true;
                } else {
                    return false;
                }
                break;
            case 'grpr':
            case 'crsr':
            case 'catr':
                include_once('./Services/ContainerReference/classes/class.ilContainerReferenceAccess.php');
                return ilContainerReferenceAccess::_isAccessible($a_node["child"]);
            
            case 'prg':
                    return $rbacsystem->checkAccess("read", $a_node["child"]);
 
            // all other types are only clickable, if read permission is given
            default:
                if ($rbacsystem->checkAccess("read", $a_node["child"])) {
                    // check if lm is online
                    if ($a_node["type"] == "lm") {
                        include_once("./Modules/LearningModule/classes/class.ilObjLearningModule.php");
                        $lm_obj = new ilObjLearningModule($a_node["child"]);
                        if ((!$lm_obj->getOnline()) && (!$rbacsystem->checkAccess('write', $a_node["child"]))) {
                            return false;
                        }
                    }
                    // check if fblm is online
                    if ($a_node["type"] == "htlm") {
                        include_once("./Modules/HTMLLearningModule/classes/class.ilObjFileBasedLM.php");
                        $lm_obj = new ilObjFileBasedLM($a_node["child"]);
                        if ((!$lm_obj->getOnline()) && (!$rbacsystem->checkAccess('write', $a_node["child"]))) {
                            return false;
                        }
                    }
                    // check if fblm is online
                    if ($a_node["type"] == "sahs") {
                        include_once("./Modules/ScormAicc/classes/class.ilObjSAHSLearningModule.php");
                        $lm_obj = new ilObjSAHSLearningModule($a_node["child"]);
                        if ((!$lm_obj->getOnline()) && (!$rbacsystem->checkAccess('write', $a_node["child"]))) {
                            return false;
                        }
                    }
                    // check if glossary is online
                    if ($a_node["type"] == "glo") {
                        $obj_id = ilObject::_lookupObjectId($a_node["child"]);
                        include_once("./Modules/Glossary/classes/class.ilObjGlossary.php");
                        if ((!ilObjGlossary::_lookupOnline($obj_id)) &&
                            (!$rbacsystem->checkAccess('write', $a_node["child"]))) {
                            return false;
                        }
                    }
 
                    return true;
                } else {
                    return false;
                }
                break;
        }
    }

References $access, $db, $ilDB, $ilUser, $query, $rbacsystem, $res, $row, ilTreeExplorerGUI\$tree, $user, ilConditionHandler\_checkAllConditionsOfTarget(), ilContainerReferenceAccess\_isAccessible(), ilObject\_lookupObjectId(), ilObject\_lookupObjId(), ilObjGlossary\_lookupOnline(), ilDBConstants\FETCHMODE_OBJECT, and sprintf.

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◆ isNodeHighlighted()

ilRepositoryExplorerGUI::isNodeHighlighted ( $a_node )

Is node highlighted?

Parameters

mixed $a_node node object/array

Returns: boolean node visible true/false

Reimplemented from ilExplorerBaseGUI.

Definition at line 203 of file class.ilRepositoryExplorerGUI.php.

    {
        if ($a_node["child"] == $_GET["ref_id"] ||
            ($_GET["ref_id"] == "" && $a_node["child"] == $this->getNodeId($this->getRootNode()))) {
            return true;
        }
        return false;
    }

References $_GET, ilTreeExplorerGUI\getNodeId(), and getRootNode().

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◆ isNodeVisible()

ilRepositoryExplorerGUI::isNodeVisible ( $a_node )

Is node visible.

Parameters

return

Reimplemented from ilExplorerBaseGUI.

Definition at line 290 of file class.ilRepositoryExplorerGUI.php.

    {
        $ilAccess = $this->access;
        $tree = $this->tree;
        $ilSetting = $this->settings;
 
        if (!$ilAccess->checkAccess('visible', '', $a_node["child"])) {
            return false;
        }
        
        $is_course = false;
        $container_parent_id = $tree->checkForParentType($a_node["child"], 'grp');
        if (!$container_parent_id) {
            $is_course = true;
            $container_parent_id = $tree->checkForParentType($a_node["child"], 'crs');
        }
        if ($container_parent_id) {
            // do not display session materials for container course/group
            if ($ilSetting->get("repository_tree_pres")  == "all_types" && $container_parent_id != $a_node["child"]) {
                // get container event items only once
                if (!isset($this->session_materials[$container_parent_id])) {
                    include_once './Modules/Session/classes/class.ilEventItems.php';
                    $this->session_materials[$container_parent_id] = ilEventItems::_getItemsOfContainer($container_parent_id);
                }
                if (in_array($a_node["child"], $this->session_materials[$container_parent_id])) {
                    return false;
                }
            }
        }
        
        return true;
    }

References $access, $ilSetting, $settings, ilTreeExplorerGUI\$tree, and ilEventItems\_getItemsOfContainer().

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◆ sortChilds()

ilRepositoryExplorerGUI::sortChilds	(	$a_childs,
		$a_parent_node_id
	)

Sort childs.

Parameters

array	$a_childs	array of child nodes
mixed	$a_parent_node	parent node

Returns: array array of childs nodes

Reimplemented from ilExplorerBaseGUI.

Definition at line 331 of file class.ilRepositoryExplorerGUI.php.

    {
        $objDefinition = $this->obj_definition;
        $ilAccess = $this->access;
 
        $parent_obj_id = ilObject::_lookupObjId($a_parent_node_id);
        if ($parent_obj_id > 0) {
            $parent_type = ilObject::_lookupType($parent_obj_id);
        } else {
            $parent_type  = "dummy";
            $this->type_grps["dummy"] = array("root" => "dummy");
        }
 
        // alex: if this is not initialized, things are messed up
        // see bug 0015978
        $this->type_grps = array();
 
        if (empty($this->type_grps[$parent_type])) {
            $this->type_grps[$parent_type] =
                $objDefinition->getGroupedRepositoryObjectTypes($parent_type);
        }
 
        // #14465 - item groups
        include_once('./Services/Object/classes/class.ilObjectActivation.php');
        $group = array();
        $igroup = array(); // used for item groups, see bug #0015978
        $in_any_group = array();
        foreach ($a_childs as $child) {
            // item group: get childs
            if ($child["type"] == "itgr") {
                $g = $child["child"];
                $items = ilObjectActivation::getItemsByItemGroup($g);
                if ($items) {
                    // add item group ref id to item group block
                    $this->type_grps[$parent_type]["itgr"]["ref_ids"][] = $g;
 
                    // #16697 - check item group permissions
                    $may_read = $ilAccess->checkAccess('read', '', $g);
                    
                    // see bug #0015978
                    if ($may_read) {
                        include_once("./Services/Container/classes/class.ilContainerSorting.php");
                        $items = ilContainerSorting::_getInstance($parent_obj_id)->sortSubItems('itgr', $child["obj_id"], $items);
                    }
 
                    foreach ($items as $item) {
                        $in_any_group[] = $item["child"];
                        
                        if ($may_read) {
                            $igroup[$g][] = $item;
                            $group[$g][] = $item;
                        }
                    }
                }
            }
            // type group
            else {
                $g = $objDefinition->getGroupOfObj($child["type"]);
                if ($g == "") {
                    $g = $child["type"];
                }
                $group[$g][] = $child;
            }
        }
        
        $in_any_group = array_unique($in_any_group);
 
        // custom block sorting?
        include_once("./Services/Container/classes/class.ilContainerSorting.php");
        $sort = ilContainerSorting::_getInstance($parent_obj_id);
        $block_pos = $sort->getBlockPositions();
        if (is_array($block_pos) && count($block_pos) > 0) {
            $tmp = $this->type_grps[$parent_type];
 
            $this->type_grps[$parent_type] = array();
            foreach ($block_pos as $block_type) {
                // type group
                if (!is_numeric($block_type) &&
                    array_key_exists($block_type, $tmp)) {
                    $this->type_grps[$parent_type][$block_type] = $tmp[$block_type];
                    unset($tmp[$block_type]);
                }
                // item group
                else {
                    // using item group ref id directly
                    $this->type_grps[$parent_type][$block_type] = array();
                }
            }
 
            // append missing
            if (sizeof($tmp)) {
                foreach ($tmp as $block_type => $grp) {
                    $this->type_grps[$parent_type][$block_type] = $grp;
                }
            }
 
            unset($tmp);
        }
 
        $childs = array();
        $done = array();
 
        foreach ($this->type_grps[$parent_type] as $t => $g) {
            // type group
            if (is_array($group[$t])) {
                // see bug #0015978
                // custom sorted igroups
                if (is_array($igroup[$t])) {
                    foreach ($igroup[$t] as $k => $item) {
                        if (!in_array($item["child"], $done)) {
                            $childs[] = $item;
                            $done[] = $item["child"];
                        }
                    }
                } else {
                    // do we have to sort this group??
                    include_once("./Services/Container/classes/class.ilContainer.php");
                    include_once("./Services/Container/classes/class.ilContainerSorting.php");
                    $sort = ilContainerSorting::_getInstance($parent_obj_id);
                    $group = $sort->sortItems($group);
 
                    // need extra session sorting here
                    if ($t == "sess") {
                    }
 
                    foreach ($group[$t] as $k => $item) {
                        if (!in_array($item["child"], $done) &&
                            !in_array($item["child"], $in_any_group)) { // #16697
                            $childs[] = $item;
                            $done[] = $item["child"];
                        }
                    }
                }
            }
            // item groups (if not custom block sorting)
            elseif ($t == "itgr" &&
                is_array($g["ref_ids"])) {
                foreach ($g["ref_ids"] as $ref_id) {
                    if (isset($group[$ref_id])) {
                        foreach ($group[$ref_id] as $k => $item) {
                            if (!in_array($item["child"], $done)) {
                                $childs[] = $item;
                                $done[] = $item["child"];
                            }
                        }
                    }
                }
            }
        }
 
        return $childs;
    }