The main error message bar can be used to show exporting information and
other notification.
So a new Notification handler object is created in the main window
<NotificationWidget> that inherits <KMessageWidget> that shows different
type of notifications, ex. (Warning, Error and information)
Also this class contains a QFutureWatcher object that is set to handle
the QFuture variable returned from the exporting thread. this will allow
the UI to be updated when the thread finishes execution.
Signed-off-by: Gehad elrobey <gehadelrobey@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
