Add "busy" property to Authenticator
Allows to query whether an authentication is currently ongoing, which is independent from the enforced grace lock.
When authentication takes longer than the three second grace lock, which can happen in a networked environment, there is no indication to the user that the authentication is still ongoing. They will have the password field return to normal and might try to unlock again again until it eventually spontaneously unlocks or fails.
This patch adds a busy
property that could be used to show e.g. a busy indicator or similar on the lock screen UI.
Edited by Kai Uwe Broulik