[Usability]Proxy capplet

[Jorn Baayen <jorn nl linux org>]

Hi,

The current proxy capplet is rather incomplete, since it only does HTTP
proxy. It would be good if it could be extended to handle FTP and SSL
proxies, socks host, and autoconfiguration URL as well. We need those to
support proxying in Galeon properly, and gnome-vfs/nautilus should
surely use them as well.  I'm willing to do the code, and have already
made some UI mockups:

http://nl.linux.org/~jorn/Files/capplet.png
http://nl.linux.org/~jorn/Files/details.png

There are some problems though: 
- User/password. These may be different for each server, so we can't
have a global u/p setting. 99% of the proxy users prolly have these the
same though, but I think that for system configuration we'd better
support everything. In my mockups I have moved this to a details dialog,
since we can't really fit two entries extra per server into the dialog.
- GConf keys. Right now, the proxy prefs reside in
/system/http_proxy/host etc. Where do we keep the new keys?
/system/ftp_proxy/host? That would bloat the /system dir too much IMHO.
On the other hand, /system/http_proxy/ftp_host would be sucky too. I
think the best would be to have something like /system/proxy/http/host,
/system/proxy/ftp/host, etc, but this would break backward
compatibility.

It would be really cool if this could be done before the 2.2 UI freeze,
so that we can remove the proxy prefs from Galeon.

Comments? Suggestions?

Cheers,
Jorn