class.ilNavigationHistoryGUI.php

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<?php
 
use ILIAS\Navigation\StandardGUIRequest;
 
class ilNavigationHistoryGUI implements ilCtrlBaseClassInterface
{
    protected StandardGUIRequest $request;
    protected ilCtrl $ctrl;
    protected ilNavigationHistory $nav_history;
    protected ilLanguage $lng;
 
    public function __construct()
    {
        global $DIC;
 
        $this->ctrl = $DIC->ctrl();
        $this->nav_history = $DIC["ilNavigationHistory"];
        $this->lng = $DIC->language();
        $this->request = new StandardGUIRequest(
            $DIC->http(),
            $DIC->refinery()
        );
    }
 
    public function executeCommand(): void
    {
        $ilCtrl = $this->ctrl;
 
        $next_class = $ilCtrl->getNextClass();
        $cmd = $ilCtrl->getCmd();
 
        switch ($next_class) {
            default:
                $this->$cmd();
                break;
        }
    }
 
    public function getHTML(): string
    {
        $ilNavigationHistory = $this->nav_history;
        $lng = $this->lng;
 
        $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);
 
        $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"]) || $this->request->getRefId() === 0 ||
                $item["ref_id"] != $this->request->getRefId() || $k > 0) {                      // do not list current item
                $obj_id = ilObject::_lookupObjId((int) $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;
    }
 
    public function handleNavigationRequest(): void
    {
        $ilNavigationHistory = $this->nav_history;
        $ilCtrl = $this->ctrl;
 
        if ($this->request->getTarget() === "navi_request") {
            $items = $ilNavigationHistory->getItems();
            foreach ($items as $item) {
                if ($item["ref_id"] == $this->request->getUrlRefId()) {
                    ilUtil::redirect($item["link"]);
                }
            }
            reset($items);
            $item = current($items);
            if ($this->request->getUrlRefId() === 0 && $item["ref_id"] == $this->request->getRefId()) {
                $item = next($items);           // omit current item
            }
            if ($this->request->getUrlRefId() === 0 && $item["link"] != "") {
                ilUtil::redirect($item["link"]);
            }
 
            $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", "");
            $ilCtrl->setParameterByClass("ilrepositorygui", "getlast", "true");
            $ilCtrl->redirectByClass("ilrepositorygui", "");
        }
    }
 
    public function removeEntries(): void
    {
        $ilNavigationHistory = $this->nav_history;
 
        $ilNavigationHistory->deleteDBEntries();
        $ilNavigationHistory->deleteSessionEntries();
    }
}