public static function createLayout($sLayoutName, View $oView)
    {
        $sLayoutsRoot = AppHelper::getInstance()->getComponentRoot('layouts');
        $sLayoutFile  = $sLayoutsRoot.DIRECTORY_SEPARATOR
            .strtolower($sLayoutName).'.php';
        if (is_readable($sLayoutFile)) {
            return new Layout($sLayoutFile, $oView);
        }
        return null;
    }