AFAICS Mir has means to ask clients to close windows, but I don't see an
API to ask the client itself to quit.
** No longer affects: unity (Ubuntu)
** Changed in: qtmir (Ubuntu)
Status: New => Confirmed
** Changed in: qtmir (Ubuntu)
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/1624407
Title:
Closing an application doesn’t actually close it, it merely requests
all its windows to be closed
Status in qtmir package in Ubuntu:
Confirmed
Status in unity8 package in Ubuntu:
New
Bug description:
Currently in unity8, when requesting to "Quit" a running application
from the launcher, what happens is that qtmir goes through all its
associated windows/surfaces, and closes them one by one. Supposedly,
when the last window is closed, the application terminates itself (but
this is not necessarily the case, see
https://doc.qt.io/qt-5/qguiapplication.html#quitOnLastWindowClosed-
prop).
This prevents application authors from doing proper cleanup before the
app is closed. For example in Qt, the QCoreApplication::aboutToQuit()
signal is emitted only after all windows have been closed, so the
application doesn’t get a chance to e.g. save the list of open windows
(real use case for multi-window browser application which saves the
current session).
This is similar to unity7’s implementation by the way, but I think
it’s wrong. Surely there must be a way (maybe toolkit-specific) to
request an app to terminate itself (and fall back to closing all
windows if not).
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