how to hide ask widget for non logged in user or change error message text or redirect them to login

Issues:

how to hide ask question widget on sidebar for non logged in users or change error message text when user click on post question or redirect them to login page so question get posted after they login or signup.

suggestions:

1) Hide tag on quick ask widget.

2) show button pop up to ask question.

3) Error message to change as you need to login or signup to ask question.

— present error message is that you do not have permission