public function handleFolderContents(SS_HTTPRequest $request)
    {
        if (!$request->param('FolderID')) {
            $folder = Injector::inst()->get('Folder');
            $folder->Filename = ASSETS_DIR;
        } else {
            $folder = Folder::get()->byID($request->param('FolderID'));
        }

        if (!$folder) {
            return $this->httpError(404, 'That folder does not exist');
        }

        $cursor = (int)$request->getVar('cursor');
        $result = array(
            'folder' => $this->createFolderJson($folder),
            'breadcrumbs' => $this->createBreadcrumbJson($folder),
            'children' => array()
        );

        $files = File::get()
            ->filter(array(
                'ParentID' => $folder->ID
            ))
            ->sort($this->getSortClause($request->getVar('sort')));

        $totalFiles = (int)$files->count();
        $files = $files->limit($this->config()->folder_items_limit, $cursor);

        foreach ($files as $file) {
            if (!$file->canView()) {
                continue;
            }

            $result['children'][] = ($file instanceof Folder) ?
                $this->createFolderJson($file) :
                $this->createFileJson($file, $folder);
        }

        $cursor += $files->count();
        $result['cursor'] = $cursor;
        $result['has_more'] = ($cursor < $totalFiles);
        $result['total_items'] = $totalFiles;

        $response = new SS_HTTPResponse(
            Convert::array2json($result), 200
        );

        return $response->addHeader('Content-Type', 'application/json');
    }