Apache: webdav access just through https?

[stavel@brailcom.org]

        Hi,
I would like to set up apache to let users use webdav for editing
www_root.

But I would like to prevent them from using http when publishing.
Let them use just https layer.

Directive DAV can be used just with <Location> or <Directory>

I tried this:

[/var/www]$: ln -s . webdav

<Location /webdav>
   RewriteEngine on
   RewriteCond %{HTTPS} !=on
   RewriteRule .* - [F]
   DAV On
</Location>

Publish url is: https://localhost/webdav

Everything else is accessible by http layer.

Do you know more  fashionable solution?

        Thanks,
-- 
      Jan Stavel