[josm-dev] Selection Performance

[Matthias Julius]

Petr Nejedlý <petr at nejedli.cz> writes:

> First and foremost, selection status is not a property of the data.
> Changing the data set just because the user have selected something is 
> plain wrong. Having a per-dataset selection is quite disturbing too - 
> there should be only one, system-wide.

I think having separate selections per layer is useful.  Mostly
because it is preserving the selection when switching layers.  The
alternative would be to deselect everything when a layer is
deactivated.

It certainly would be more disturbing if an active selection contains
primitives on inactive layers.

Matthias