Method __construct

/**
 * Class constructor.
 *
 * @param   SiteApplication  $app  Application Object
 *
 * @since   1.5
 */
public function __construct(SiteApplication $app = null)
{
    $this->pathway = array();
    $app = $app ?: Factory::getContainer()->get(SiteApplication::class);
    $menu = $app->getMenu();
    $lang = Factory::getLanguage();
    if ($item = $menu->getActive()) {
        $menus = $menu->getMenu();
        // Look for the home menu
        if (Multilanguage::isEnabled()) {
            $home = $menu->getDefault($lang->getTag());
        } else {
            $home = $menu->getDefault();
        }
        if (\is_object($home) && $item->id != $home->id) {
            foreach ($item->tree as $menupath) {
                $link = $menu->getItem($menupath);
                switch ($link->type) {
                    case 'separator':
                    case 'heading':
                        $url = null;
                        break;
                    case 'url':
                        if (strpos($link->link, 'index.php?') === 0 && strpos($link->link, 'Itemid=') === false) {
                            // If this is an internal Joomla link, ensure the Itemid is set.
                            $url = $link->link . '&Itemid=' . $link->id;
                        } else {
                            $url = $link->link;
                        }
                        break;
                    case 'alias':
                        // If this is an alias use the item id stored in the parameters to make the link.
                        $url = 'index.php?Itemid=' . $link->getParams()->get('aliasoptions');
                        break;
                    default:
                        $url = $link->link . '&Itemid=' . $link->id;
                        break;
                }
                $this->addItem($menus[$menupath]->title, $url);
            }
        }
    }
}