D19989: Unmounting busy device doesn't tell who is blocking

[David Hallas]

hallas created this revision.
hallas added reviewers: Dolphin, elvisangelaccio, ngraham, broulik.
Herald added a project: Dolphin.
Herald added a subscriber: kfm-devel.
hallas requested review of this revision.

REVISION SUMMARY
  Unmounting a busy device from the places panel doesn't tell which
  applications have open files blocking the unmount. This has been a
  feature in the Device Notifier for some time, so this commit copies the
  code from there to achieve the same thing.

TEST PLAN
  Mount a USB stick using Dolphin
  Open a file from the USB stick
  Unmount the USB stick using Dolphin
  Observe the new error message.
  
  FEATURE: 189302

REPOSITORY
  R318 Dolphin

BRANCH
  show_which_files_are_blocking_unmount (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D19989

AFFECTED FILES
  CMakeLists.txt
  src/CMakeLists.txt
  src/config-ksysguard.h.cmake
  src/panels/places/placesitemmodel.cpp
  src/panels/places/placesitemmodel.h

To: hallas, #dolphin, elvisangelaccio, ngraham, broulik
Cc: kfm-devel, alexde, feverfew, meven, spoorun, navarromorales, firef, andrebarros, emmanuelp, mikesomov
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