RE: Drop lastPosition from Geolocation?

I'm not sure that I like the idea of adding a "backup".  If the provider is unable to provide information that meets the constraints provided by the site, then how would a backup help?

An observation, only the permission denied error condition should prevent the inclusion of the "backup".  Timeout isn't really that special.


> -----Original Message-----
> From: Greg Bolsinga []
> Sent: Wednesday, 19 November 2008 11:31 AM
> To: Doug Turner
> Cc: public-geolocation; Richard Barnes; Thomson, Martin
> Subject: Re: Drop lastPosition from Geolocation?
> On Nov 19, 2008, at 9:19 AM, Doug Turner wrote:
> > I was thinking it would be something like -- the web app could say,
> > "I don't care if the location is a bit stale".  So, if a web app
> > passed 600 as the modifiedSince, that would mean that the UA could
> > return a position that is <= 10 minutes old.
> >
> >
> >> An alternative could be if the UA can't provide a position within
> >> the PositionOptions timeout parameter, it will return the last
> >> position obtained by the UA, across all pages? This would need a
> >> flag supplied to let the developer know they are getting
> >> potentially stale data. Perhaps this can be a Position field in the
> >> PositionError that is lastPosition, only set when the error code is
> >
> > That is an idea.  I am not sure I like returning a position at all
> > in most error cases.
> Yeah, should it be NULL except in the timeout case?
> Thinking about it more, in this scenario the user would have to wait
> for the timeout to expire to get the stale data. That is probably
> acceptable, because if the location is returned before that, they
> don't get stale data. If they set timeout=0, they will get the stale
> data, unless something else is already 'hot' and has the real position.
> -- Greg

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Received on Wednesday, 19 November 2008 17:35:33 UTC