Andrew.
Lets say you are looking at "football pitches", markers at either end
of a small town, level 13, the user turns on "Terrain".
Then they decide to look at a small road, in any other map it zooms
in to level 16 to show markers at the extremities.
But with Terrain maps switched on Gmaps still shows the markers but
does not zoom in because it cannot.
So the user has unwittingly "made an error", but thats not their
problem, its ours.
Hence my intervention to explain to them what is going on.
> > Ugly old JS Alert box:
> > alert("Terrain maps wont let you zoom in any closer than this - choose
> > another option");
> No: just disable the button (and perhaps grey it out) so you can see
> it doesn't do anything.
>
> I'm with Rossko with his pet hates, too. Perhaps it's a British thing.
I'm a brit too, and that automatic mouse-wheel scroll always gives me
the shivers.
Maybe my question should be "Have you seen a list of examples of the
best ways to gracefully handle user-errors?", but this is still only
one example.
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