[Differential] [Request, 296 lines] D2091: [server] Properly send a selection clear prior to keyboard focus enter

[graesslin (Martin Gräßlin)]

graesslin created this revision.
graesslin added a reviewer: Plasma on Wayland.
Restricted Application added a subscriber: plasma-devel.
Restricted Application added a project: Plasma on Wayland.

REVISION SUMMARY
  When setting the keyboard focus the server needs also to send the current
  selection to the client. So far KWayland only sent the selection if it was
  set. That is if the last focused client cleared the selection it was not
  updated and the client might have had an outdated selection.
  
  To prevent this situation the server now explicitly sends the clear to the
  client on enter if there is no selection. Also if the selection is cleared,
  the SeatInterface now unsets it's current selection to make sure that the
  next focused keyboard will get the clear selection sent.

TEST PLAN
  Existing test case adjusted and a new test case added which
  simulates the interaction of two clients.

REPOSITORY
  rKWAYLAND KWayland

BRANCH
  selection-clear-on-focus

REVISION DETAIL
  https://phabricator.kde.org/D2091

AFFECTED FILES
  autotests/client/CMakeLists.txt
  autotests/client/test_selection.cpp
  autotests/client/test_wayland_seat.cpp
  src/server/seat_interface.cpp

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

To: graesslin, #plasma_on_wayland
Cc: plasma-devel, jensreuterberg, sebas
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