Richard Frith-Macdonald <richard@brainstorm.co.uk> writes:
I have never seen anything in the MacOS-X documentation describing how the
session manager tells the application to shut down other than the
NSWorkspaceWillPowerOffNotification. It is clear that the session manager
sends thay notification to each application to tell it to shut down, but it
is not clear what happens then.
Does NSApp observe the notification and call its own -terminate method when
it receives it, or does it depend on the applicaton programmer to write
code
to observe the notification and call -terminate?
Aforementioned documentation explicitly mentions logout, restart and
shutdown
as possible cases of application termination, so the following text (stating
that NSDocumentController handles graceful termination itself and listing
the
code for manual handling) should be applicable to these situations. So it
seems that applicationShouldTerminate: is called without any help from
programmer, either by framework (by observing
NSWorkspaceWillPowerOffNotification) or by session manager (by iterating
over
the list of running applications after sending
NSWorkspaceWillPowerOffNotification).