Bug 511338 - Perform tooltip update in background thread

The UI thread does not have to be blocked for the retrieval of the
action's tooltip text. Using a CompletableFuture to retrieve the tooltip
text and setting it for the action when done on the UI thread.

Change-Id: I363c7ab642efd078de12cc08fe3cc3226793b4e9
Signed-off-by: Karsten Thoms <karsten.thoms@itemis.de>
1 file changed