ilNavigationHistory Class Reference

Navigation History of Repository Items. More...

Collaboration diagram for ilNavigationHistory:

Public Member Functions
	__construct ()
	Constructor.
	addItem ($a_ref_id, $a_link, $a_type, $a_title="", $a_sub_obj_id="", $a_goto_link="")
	Add an item to the stack.
	getItems ()
	Get navigation item stack.
	deleteDBEntries ()
	Delete DB entries.
	deleteSessionEntries ()
	Delete session entries.

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

ilNavigationHistory::__construct

(

)

Constructor.

Parameters

int

$a_id

Definition at line 22 of file class.ilNavigationHistory.php.

References $_SESSION, and $items.

        {
                $this->items = array();
                $items = null;
                if (isset($_SESSION["il_nav_history"]))
                {
                        $items = unserialize($_SESSION["il_nav_history"]);
                }
                if (is_array($items))
                {
                        $this->items = $items;
                }
        }

Member Function Documentation

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 40 of file class.ilNavigationHistory.php.

References $_SESSION, $ilUser, $items, ilObject\_exists(), ilObject\_lookupObjId(), ilObject\_lookupTitle(), and getItems().

        {
                global $ilUser, $ilDB;

                // 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()))
                        );
        }

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ilNavigationHistory::deleteDBEntries

(

)

Delete DB entries.

Parameters

@return

Definition at line 166 of file class.ilNavigationHistory.php.

References $ilUser.

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

ilNavigationHistory::deleteSessionEntries

(

)

Delete session entries.

Parameters

@return

Definition at line 185 of file class.ilNavigationHistory.php.

References $_SESSION.

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

ilNavigationHistory::getItems

(

)

Get navigation item stack.

Definition at line 104 of file class.ilNavigationHistory.php.

References $ilUser, $items, $title, ilLink\_getLink(), ilObject\_lookupObjId(), and ilObject\_lookupTitle().

Referenced by addItem().

        {
                global $tree, $ilDB, $ilUser;
                
                $items = array();
                
                foreach ($this->items as $it)
                {
                        if ($tree->isInTree($it["ref_id"]))
                        {
                                $items[$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"]))
                                                {
                                                        $link = ($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;
        }

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Field Documentation

ilNavigationHistory::$items

private

Definition at line 15 of file class.ilNavigationHistory.php.

Referenced by __construct(), addItem(), and getItems().

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The documentation for this class was generated from the following file:

• Services/Navigation/classes/class.ilNavigationHistory.php