> Well that platform should manage between GPS and any other providers itself? > So if this was implemented on iPhone, for example, the platform uses > iPhone's CoreLocation, and it manages where it is getting the data from > itself. That is a platform detail as I read it. Sure, I agree.
>>>> On a related note, each time a new request is made, the PostionOptions >>>> for that request are passed to the GeolocationService by calling >>>> startUpdating(PositionOptions*). This allows the GeolocationService to >>>> estimate which location sources are needed (ie whether GPS is to be >>>> used) for all currently executing requests. However, this will always >>>> be an upper bound, as there's no way to remove sources from the list. >>>> Again, is this intentional? >> >> Even if we choose to share the results of all providers between all >> currently active requests, I think we should still limit the use of >> 'enableHighAccuracy' providers to times when a request specifying this >> option is in progress. In the current implementation, once a request >> has been made with enablehighAccuracy=true, all subsequent requests >> will use the 'expensive' providers, until all current requests have >> completed. What do you think? > > I think that is a question for the GeoLocation list, in fact I think it may > have been covered there? I don't think it has been covered there, but this is an implementation detail I think. > I think that should be left up to the platform, personally. In a theoretical > iPhone platform, CoreLocation will be as accurate as the most accurate > request, maxing out with the accuracy the device is capable of. Sure, but the present code does not pass the necessary information to the platform-specific GeolocationService. So an implementation is not able to limit the use of high-accuracy providers to times when a request that specifies enableHighAccuracy is in progress. In order for the platform-specific implementation to decide on a policy, we need to pass to the GeolocationService both the 'registration' and 'unregistration' of enableHighAccuracy-enabled requests. Steve -- Google UK Limited Registered Office: Belgrave House, 76 Buckingham Palace Road, London SW1W 9TQ Registered in England Number: 3977902 _______________________________________________ webkit-dev mailing list [email protected] http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
