ResponsiveHelper.php

<?php
/**
 * ResponsiveHelper.php
 *
 * This class collects helper methods for Stud.IP's responsive design.
 *
 * @author    Jan-Hendrik Willms <tleilax+studip@gmail.com>
 * @license   GPL2 or any later version
 * @copyright Stud.IP core group
 * @since     Stud.IP 3.2
 */
class ResponsiveHelper
{
    /**
     * Returns the current navigation as an array.
     *
     * @return Array containing the navigation
     */
    public static function getNavigationArray()
    {
        $navigation = [];
        $activated  = [];

        $link_params = array_fill_keys(array_keys(URLHelper::getLinkParams()), null);

        foreach (Navigation::getItem('/')->getSubNavigation() as $path => $nav) {
            $image = $nav->getImage();

            $forceVisibility = false;
            /*
             * Special treatment for "browse" navigation which is normally hidden
             * when we are inside a course.
             */
            if ($path === 'browse' && !$image) {
                $image = Icon::create('seminar');
                $forceVisibility = true;
            }
            /*
             * Special treatment for "footer" navigation because
             * the real footer is hidden in responsive view.
             */
            if ($path === 'footer' && !$image) {
                $image = Icon::create('info');
                $nav->setTitle(_('Impressum & Information'));
                $forceVisibility = true;
            }

            $image_src = $image ? $image->copyWithRole('info_alt')->asImagePath() : false;
            $item = [
                'icon'     => $image_src ? self::getAssetsURL($image_src) : false,
                'title'    => (string) $nav->getTitle(),
                'url'      => URLHelper::getURL($nav->getURL(), $link_params, true),
                'parent'   => '/',
                'path'     => $path,
                'visible'  => $forceVisibility ? true : $nav->isVisible(true),
                'active'   => $nav->isActive()
            ];

            if ($nav->isActive()) {
                // course navigation is integrated in course sub-navigation items
                if ($path === 'course') {
                    $activated[] = 'browse/my_courses/' . (Context::get()->getId());
                } else {
                    $activated[] = $path;
                }
            }

            if ($nav->getSubnavigation() && $path != 'start') {
                $item['children'] = self::getChildren($nav, $path, $activated);
            }