class.ilNavigationHistoryGUI.php

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<?php

/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilNavigationHistoryGUI
{

        private $items;

        public function __construct()
        {
        }

        function executeCommand()
        {
                global $ilCtrl;

                $next_class = $ilCtrl->getNextClass();
                $cmd = $ilCtrl->getCmd();

                switch($next_class)
                {
                        default:
                                $this->$cmd();
                                break;
                }
        }

        function getHTML()
        {
                global $ilNavigationHistory, $lng;
                
                include_once("./Services/UIComponent/AdvancedSelectionList/classes/class.ilAdvancedSelectionListGUI.php");
                $selection = new ilAdvancedSelectionListGUI();
                $selection->setFormSelectMode("url_ref_id", "ilNavHistorySelect", true,
                        "goto.php?target=navi_request", "ilNavHistory", "ilNavHistoryForm",
                        "_top", $lng->txt("go"), "ilNavHistorySubmit");
                $selection->setListTitle($lng->txt("last_visited"));
                $selection->setId("lastvisited");
                $selection->setSelectionHeaderClass("MMInactive");
                $selection->setHeaderIcon(ilAdvancedSelectionListGUI::NO_ICON);
                $selection->setItemLinkClass("small");
                $selection->setUseImages(true);
                include_once("./Services/Accessibility/classes/class.ilAccessKey.php");
                $selection->setAccessKey(ilAccessKey::LAST_VISITED);
                
                $items = $ilNavigationHistory->getItems();
                //$sel_arr = array(0 => "-- ".$lng->txt("last_visited")." --");
                reset($items);
                $cnt = 0;
                foreach($items as $k => $item)
                {
                        if ($cnt++ > 20) break;
                        if (!isset($item["ref_id"]) || !isset($_GET["ref_id"]) ||
                                $item["ref_id"] != $_GET["ref_id"] || $k > 0)                   // do not list current item
                        {
                                $obj_id = ilObject::_lookupObjId($item["ref_id"]);
                                $selection->addItem($item["title"], $item["ref_id"], $item["link"],
                                        ilObject::_getIcon($obj_id, "tiny", $item["type"]),
                                        $lng->txt("obj_".$item["type"]), "_top");
                        }
                }
                $html = $selection->getHTML();
                
                if ($html == "")
                {
                        $selection->addItem($lng->txt("no_items"), "", "#",
                                "", "", "_top");
                        $selection->setUseImages(false);
                        $html = $selection->getHTML();
                }
                return $html;
        }
        
        function handleNavigationRequest()
        {
                global $ilNavigationHistory, $ilCtrl;
                
                if ($_GET["target"] == "navi_request")
                {
                        $items = $ilNavigationHistory->getItems();
                        foreach($items as $item)
                        {
                                if ($item["ref_id"] == $_POST["url_ref_id"])
                                {
                                        ilUtil::redirect($item["link"]);
                                }
                        }
                        reset($items);
                        $item = current($items);
                        if ($_POST["url_ref_id"] == 0 && $item["ref_id"] == $_GET["ref_id"])
                        {
                                $item = next($items);           // omit current item
                        }
                        if ($_POST["url_ref_id"] == 0 && $item["link"] != "")
                        {
                                ilUtil::redirect($item["link"]);
                        }
                        
                        $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", "");
                        $ilCtrl->setParameterByClass("ilrepositorygui", "getlast", "true");
                        $ilCtrl->redirectByClass("ilrepositorygui", "frameset");
                }
        }
        
        function removeEntries()
        {
                global $ilNavigationHistory;
                
                $ilNavigationHistory->deleteDBEntries();
                $ilNavigationHistory->deleteSessionEntries();
        }
        
}
?>