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Campbell Barton 39e1518d41 Fix glitch updating manipulator after undo ...

Running undo would notify manipulators to refresh,
but this still allowed for events in the queue to be handled,
where manipulators could be drawn for selection before
their refresh callback runs.

This made Python manipulators raise exceptions
about referencing invalid data (or crash).

Now tag manipulator update on file load (including undo)
and ensure the refresh callback runs
before drawing manipulator selection.

Also split manipulator map refresh flag in two since selection doesn't
perform the same operations as regular drawing.

2017-07-31 14:35:10 +10:00

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