Navigation History of Repository Items. More...

Collaboration diagram for ilNavigationHistory:

Public Member Functions
	__construct ()
	Constructor. More...

	addItem ( $a_ref_id, $a_link, $a_type, $a_title="", $a_sub_obj_id="", $a_goto_link="")
	Add an item to the stack. More...

	getItems ()
	Get navigation item stack. More...

	deleteDBEntries ()
	Delete DB entries. More...

	deleteSessionEntries ()
	Delete session entries. More...

Protected Attributes
	$user

	$db

	$tree

	$obj_definition

	$plugin_admin

Private Attributes
	$items

Detailed Description

Navigation History of Repository Items.

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

Version: $Id$

Definition at line 12 of file class.ilNavigationHistory.php.

Constructor & Destructor Documentation

◆ __construct()

ilNavigationHistory::__construct ( )

Constructor.

Parameters

int $a_id

Definition at line 47 of file class.ilNavigationHistory.php.

    {
        global $DIC;
 
        $this->user = $DIC->user();
        $this->db = $DIC->database();
        $this->tree = $DIC->repositoryTree();
        $this->obj_definition = $DIC["objDefinition"];
        $this->plugin_admin = $DIC["ilPluginAdmin"];
        $this->items = array();
        $items = null;
        if (isset($_SESSION["il_nav_history"])) {
            $items = unserialize($_SESSION["il_nav_history"]);
        }
        if (is_array($items)) {
            $this->items = $items;
        }
    }

References $_SESSION, $DIC, $items, and user().

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Member Function Documentation

◆ addItem()

ilNavigationHistory::addItem	(	$a_ref_id,
		$a_link,
		$a_type,
		$a_title = `""`,
		$a_sub_obj_id = `""`,
		$a_goto_link = `""`
	)

Add an item to the stack.

If ref_id is already used, the item is moved to the top.

Definition at line 70 of file class.ilNavigationHistory.php.

      {
        $ilUser = $this->user;
        $ilDB = $this->db;
 
        // never store?
        if ($ilUser->prefs["store_last_visited"] == 2) {
            return;
        }
        
        $a_sub_obj_id = $a_sub_obj_id . "";
        
        if ($a_title == "" && $a_ref_id > 0) {
            $obj_id = ilObject::_lookupObjId($a_ref_id);
            if (ilObject::_exists($obj_id)) {
                $a_title = ilObject::_lookupTitle($obj_id);
            }
        }
 
        $id = $a_ref_id . ":" . $a_sub_obj_id;
 
        $new_items[$id] = array("id" => $id,"ref_id" => $a_ref_id, "link" => $a_link, "title" => $a_title,
            "type" => $a_type, "sub_obj_id" => $a_sub_obj_id, "goto_link" => $a_goto_link);
        
        $cnt = 1;
        foreach ($this->items as $key => $item) {
            if ($item["id"] != $id && $cnt <= 10) {
                $new_items[$item["id"]] = $item;
                $cnt++;
            }
        }
        
        // put items in session
        $this->items = $new_items;
 
        $items = serialize($this->items);
        $_SESSION["il_nav_history"] = $items;
        //var_dump($this->getItems());
 
 
        // only store in session?
        if ($ilUser->prefs["store_last_visited"] == 1) {
            return;
        }
 
 
        // update entries in db
        $ilDB->update(
            "usr_data",
            array(
                    "last_visited" => array("clob", serialize($this->getItems()))),
            array(
                "usr_id" => array("integer", $ilUser->getId()))
        );
    }

References $_SESSION, $a_type, $db, $id, $ilDB, $ilUser, $items, $key, $user, ilObject\_exists(), ilObject\_lookupObjId(), ilObject\_lookupTitle(), and getItems().

Referenced by ilObjIndividualAssessmentGUI\addToNavigationHistory(), and ilObjForumGUI\executeCommand().

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◆ deleteDBEntries()

ilNavigationHistory::deleteDBEntries ( )

Delete DB entries.

Parameters

return

Definition at line 210 of file class.ilNavigationHistory.php.

    {
        $ilUser = $this->user;
        $ilDB = $this->db;
        
        // update entries in db
        $ilDB->update(
            "usr_data",
            array(
                    "last_visited" => array("clob", serialize(array()))),
            array(
                "usr_id" => array("integer", $ilUser->getId()))
        );
    }

References $db, $ilDB, $ilUser, and $user.

◆ deleteSessionEntries()

ilNavigationHistory::deleteSessionEntries ( )

Delete session entries.

Parameters

return

Definition at line 231 of file class.ilNavigationHistory.php.

    {
        $_SESSION["il_nav_history"] = serialize(array());
    }

References $_SESSION.

◆ getItems()

ilNavigationHistory::getItems ( )

Get navigation item stack.

Definition at line 135 of file class.ilNavigationHistory.php.

    {
        $tree = $this->tree;
        $ilDB = $this->db;
        $ilUser = $this->user;
        $objDefinition = $this->obj_definition;
        $ilPluginAdmin = $this->plugin_admin;
        
        $items = array();
        
        foreach ($this->items as $it) {
            if ($tree->isInTree($it["ref_id"]) &&
                (
                    !$objDefinition->isPluginTypeName($it["type"]) ||
                $ilPluginAdmin->isActive(
                    IL_COMP_SERVICE,
                    "Repository",
                    "robj",
                    ilPlugin::lookupNameForId(IL_COMP_SERVICE, "Repository", "robj", $it["type"])
                )
                )) {
                $items[$it["ref_id"] . ":" . $it["sub_obj_id"]] = $it;
            }
        }
        // less than 10? -> get items from db
        if (count($items) < 10 && $ilUser->getId() != ANONYMOUS_USER_ID) {
            $set = $ilDB->query(
                "SELECT last_visited FROM usr_data " .
                " WHERE usr_id = " . $ilDB->quote($ilUser->getId(), "integer")
            );
            $rec = $ilDB->fetchAssoc($set);
            $db_entries = unserialize($rec["last_visited"]);
            $cnt = count($items);
            if (is_array($db_entries)) {
                foreach ($db_entries as $rec) {
                    include_once("./Services/Link/classes/class.ilLink.php");
                    
                    if ($cnt <= 10 && !isset($items[$rec["ref_id"] . ":" . $rec["sub_obj_id"]])) {
                        if ($tree->isInTree($rec["ref_id"]) &&
                            (
                                !$objDefinition->isPluginTypeName($rec["type"]) ||
                            $ilPluginAdmin->isActive(
                                IL_COMP_SERVICE,
                                "Repository",
                                "robj",
                                ilPlugin::lookupNameForId(IL_COMP_SERVICE, "Repository", "robj", $rec["type"])
                            )
                            )) {
                            $link = ($rec["goto_link"] != "")
                                ? $rec["goto_link"]
                                : ilLink::_getLink($rec["ref_id"]);
                            if ($rec["sub_obj_id"] != "") {
                                $title = $rec["title"];
                            } else {
                                $title = ilObject::_lookupTitle(ilObject::_lookupObjId($rec["ref_id"]));
                            }
                            $items[$rec["ref_id"] . ":" . $rec["sub_obj_id"]] = array("id" => $rec["ref_id"] . ":" . $rec["sub_obj_id"],
                                "ref_id" => $rec["ref_id"], "link" => $link, "title" => $title,
                                "type" => $rec["type"], "sub_obj_id" => $rec["sub_obj_id"], "goto_link" => $rec["goto_link"]);
                            $cnt++;
                        }
                    }
                }
            }
        }
        //var_dump($items);
        return $items;
    }