Is there anyway of opening the Facebook login directly?
My site has it's own login but I want users to be able to share stuff to Fb.
The nicest way would be a settings panel where it shows something like: Facebook: <login> or < sign-out >
If you aren't using sencha.io's user accounts and you just want to share items on facebook then you can simply use their javascript api directly: https://developers.facebook.com/docs/plugins/