D15613: [Hotplug Engine] Update actions at runtime and listen for added/removed

[Kai Uwe Broulik]

broulik created this revision.
broulik added a reviewer: Plasma.
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REVISION SUMMARY
  It would only detect changes to existing device actions but not adding or removing them.
  Moreover, the list of actions was never updated at runtime, only the list of predicates for the device.
  This causes Device Notifier to pick up added, removed, or modified device actions only on startup.

TEST PLAN
  - Added a device action, would show up in device notifier right away
  - Renamed a device action, change would be reflected in device notifier right away
  - Removed a device action, would disappear in device notifier right away
  - Changed the predicate of an action to no longer match storage devices, it disappeared right away
  - Invoking actions like "Open in file manager" still works

REPOSITORY
  R120 Plasma Workspace

REVISION DETAIL
  https://phabricator.kde.org/D15613

AFFECTED FILES
  dataengines/hotplug/hotplugengine.cpp
  dataengines/hotplug/hotplugengine.h

To: broulik, #plasma
Cc: plasma-devel, ragreen, Pitel, ZrenBot, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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