Frontend\Core\Engine\Breadcrumb::__construct PHP Method

    public function __construct(KernelInterface $kernel)
    {
        parent::__construct($kernel);
        // store in reference
        $this->getContainer()->set('breadcrumb', $this);
        // get more information for the homepage
        $homeInfo = Navigation::getPageInfo(1);
        // add homepage as first item (with correct element)
        $this->addElement($homeInfo['navigation_title'], Navigation::getURL(1));
        // get other pages
        $pages = $this->URL->getPages();
        // init vars
        $items = array();
        $errorURL = Navigation::getURL(404);
        // loop pages
        while (!empty($pages)) {
            // init vars
            $url = implode('/', $pages);
            $menuId = Navigation::getPageId($url);
            $pageInfo = Navigation::getPageInfo($menuId);
            // do we know something about the page
            if ($pageInfo !== false && isset($pageInfo['navigation_title'])) {
                // only add pages that aren't direct actions
                if ($pageInfo['tree_type'] != 'direct_action') {
                    // get URL
                    $pageURL = Navigation::getURL($menuId);
                    // if this is the error-page, so we won't show an URL.
                    if ($pageURL == $errorURL) {
                        $pageURL = null;
                    }
                    // add to the items
                    $items[] = array('title' => $pageInfo['navigation_title'], 'url' => $pageURL);
                }
            }
            // remove element
            array_pop($pages);
        }
        // reverse so everything is in place
        krsort($items);
        // loop and add elements
        foreach ($items as $row) {
            $this->addElement($row['title'], $row['url']);
        }
    }