[Bug 1297137] Re: Progress window is confusingly closeable

[Carlo Lobrano]

Hi,

I wanted to contribute trying to fix this bug, but apparently it is not
reproducible anymore on Ubuntu 17.04. Close button is still visible,
but, once clicked, the update process is interrupted and it starts from
the beginning once Software Update is started again.

Looking into the code (InstallAptBackendAptdaemon.py), close button
holds AptCancelButton(trans), which manage the update process
interruption.

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https://bugs.launchpad.net/bugs/1297137

Title:
  Progress window is confusingly closeable

Status in update-manager package in Ubuntu:
  Triaged

Bug description:
  update-manager 1:0.196.7, Ubuntu Trusty

  1. Launch Software Updater.
  2. Begin the installation of updates.
  3. While updates are being installed, close the window.

  What happens: The window closes, but updates continue installing. This
  is confusing, because it means you can't tell when the updates have
  finished, or why your computer is still running slower than usual. And
  it means you won't be prompted to restart if necessary at the end.

  (If you try to undo your mistake by reopening Software Updater, it
  appears as only a title bar, bug 1297132.)

  What should happen: Like any dialog or progress window, Software
  Updater should never have a close button in the first place. Exiting
  is handled by more explicit buttons, depending on the situation ("OK",
  "Cancel", "Remind Me Later", "Restart Later").
  <https://wiki.ubuntu.com/SoftwareUpdates#Installing>

  Fixing this bug would also fix bug 1251623.

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