touch-packages team mailing list archive

[Michał Sawicz <michal.sawicz@xxxxxxxxxxxxx>]

The app should've saved all volatile data when it went inactive, since
that's when there's no guarantee it will ever get resumed again.

The SIGTERM would just be a way to tell the app "The user closed you,
clear yourself up as needed". Often it will be NOOP, assuming the app
uses StateSaver, which already does this.

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https://bugs.launchpad.net/bugs/1447566

Title:
  Need to expose API to notify about user closing the app

Status in ubuntu-ui-toolkit package in Ubuntu:
  Confirmed

Bug description:
  Apps currently have no way to "clean up" when a user closes them
  (swipes an app away in the right-edge switcher).

  It'd be useful to expose a signal that the app can subscribe to to
  handle SIGTERM that's sent to it by upstart. The app should not exit
  until the signal handler returns. Initially we'll rely on upstart to
  SIGKILL the app after a timeout, but later we'll need to implement a
  way for the app to suppress that if e.g. it needs to ask the user what
  to do with unsaved data.

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