On 06/08/2011, at 06:48, cocoa-dev-requ...@lists.apple.com wrote: > From: Jens Alfke <j...@mooseyard.com> > Date: 6 de agosto de 2011 02:07:48 BRT > > On Aug 5, 2011, at 8:04 AM, Carl Harris wrote: > >> I have a Cocoa app that (among other things) installs an agent in launchd >> that runs in the background. The agent installation happens when the app is >> first launched after install. >> I'd like to support the drag-to-trash approach to uninstalling. Can my >> background agent listen for some notification that would allow me to detect >> that the app bundle has been dragged to the trash, so I can clean up >> properly? > > Interesting question. I’m not aware of any such notification. > > The best thing I can think of is to have your agent process periodically > check whether its file still exists, and exit if it doesn’t (or if it’s now > inside the trash).
What I do in a similar situation is having the agent watch its own executable (as well as the containing app's bundle) with a kqueue (using EVFILT_VNODE and checking fro the flags NOTE_DELETE|NOTE_RENAME), and if this event occurs it unloads itself and exits. Works for me. Note that moving a running application to anywhere (not just the Trash) can lead to all sorts of path-dependent operations failing, so it's best to exit fast here. HTH, -- Rainer Brockerhoff <rai...@brockerhoff.net> Belo Horizonte, Brazil "In the affairs of others even fools are wise In their own business even sages err." Weblog: http://www.brockerhoff.net/blog _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
