[Bug 1021733] Re: Complete the Additional Drivers implementation

[Mathieu Trudel-Lapierre]

Specifically; points 6 and 7 on the design wiki page need to be
addressed:

If the changes required a restart, the “Software & Updates” panel is
still open, and the “Additional Drivers” tab is still frontmost, the
System Settings window should request attention.

If the changes required a restart, but you have since navigated away
from the “Additional Drivers” tab or closed System Settings altogether,
a parent-less alert box should appear with the title “Additional
Drivers”, the “Software & Updates” icon, the text “ Warning /!\ You need
to restart the computer to complete the driver changes.”, and “Restart
Later” and “Restart Now” buttons (fixing bug 306708).

"Prompting to install additional drivers" is also not done yet.

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https://bugs.launchpad.net/bugs/1021733

Title:
  Complete the Additional Drivers implementation

Status in “software-properties” package in Ubuntu:
  Triaged

Bug description:
  I've started implementing the design in
  https://wiki.ubuntu.com/SoftwareAndUpdatesSettings#drivers ; devices
  can be listed on systems that require binary drivers, and the new tab
  is there with the basic UI bits.

  What's left to be done:
   - hook up signals for Apply
    - Might be more efficiently done as two steps: when selections change, list the changes, then apply the list of changed packages as a batch in Apply.
   - Remove the Revert button and make sure the "window" Revert button works (hook up signals to revert changes, clear cache, etc.)
   - Add the progress bar when Apply is running, replacing the "No proprietary..." label.
   - Testing, testing, testing.

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