[Differential] [Request, 28 lines] D2525: RFC: Make Switch User option invoke the switch user UI in the lockscreen

[davidedmundson (David Edmundson)]

davidedmundson created this revision.
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REVISION SUMMARY
  Instead of having a separate switch user screen, we just invoke the lock
  screen with a parameter to default to the switch session page.
  
  This is better because:
  
  - it's a familiar consistent UI to the lockscreen
  
  - It has all the lockscreen features. (Wallpapers, Multiscreen, OSDs)
  
  - Session switching is simpler as we won't have to wait to invoke the
  
  lock screen before switching VTs
  
  - We get rid of one more chunk of rubbish code from ksmserver
  
  (it becomes just KSldApp::self()->lock(DefaultToSwitchUser) instead of a
  blocking dialog)
  
  - There's one less lnf component to maintain
  
  However, it does bring the behavioural change that you can't cancel from
  the "switch user screen" without entering a password
  
  (argubaly a feature... Switch User locks on some other platforms)
  
  And the session will unconditionally lock when you switch session,
  currently it's linked to the config option "Lock screen automatically"
  
  (which is arguably completely wrong anyway, as that config option is
  displayed as being about locking after a timeout)

REPOSITORY
  rKSCREENLOCKER KScreenLocker

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D2525

AFFECTED FILES
  greeter/greeterapp.cpp
  greeter/greeterapp.h
  greeter/main.cpp
  ksldapp.cpp
  ksldapp.h

EMAIL PREFERENCES
  https://phabricator.kde.org/settings/panel/emailpreferences/

To: davidedmundson, #plasma
Cc: plasma-devel, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas
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