private void ShowDepartures(string to, bool actSilently)
{
var currentPosition = LocationService.CurrentPosition;
if (currentPosition != null && !currentPosition.IsUnknown)
{
var from = Stations.GetNearest(LatLong.Create(currentPosition.Latitude, currentPosition.Longitude), 1)[0];
ShowDepartures(Stations.GetAll(), from.Item2, null, to, actSilently);
}
else
{
OnError();
}
}
private static void OnGeoPositionChanged(object sender, GeoPositionChangedEventArgs <GeoCoordinate> e)
{
if (e.Position.Timestamp > currentPositionTimestamp)
{
var previousPosition = CurrentPosition;
var newPosition = e.Position.Location;
if (previousPosition == null || previousPosition.IsUnknown || currentPositionTimestamp == default(DateTimeOffset) ||
LatLong.Create(previousPosition.Latitude, previousPosition.Longitude) - LatLong.Create(newPosition.Latitude, newPosition.Longitude) >= 0.050)
{
CurrentPosition = newPosition;
Settings.Set(Setting.CurrentLat, CurrentPosition.Latitude);
Settings.Set(Setting.CurrentLong, CurrentPosition.Longitude);
if (PositionChanged != null && !AppMetadata.Current.RunningInBackground)
{
PositionChanged();
}
}
currentPositionTimestamp = e.Position.Timestamp;
}
}
private void LoadNearestStations()
{
if (nearestLazyBlock != null)
{
nearestLazyBlock.Cancel();
}
var lazyBlockUI = new LazyBlockUI <Tuple <double, Station> >(this, nearestStations, nearestStationsMessageTextBlock, null);
LatLong from;
if (fromStation == null)
{
var currentPosition = LocationService.CurrentPosition;
if (!Settings.GetBool(Setting.LocationServicesEnabled))
{
lazyBlockUI.SetItems(null);
lazyBlockUI.SetLocalProgressMessage("Locations Services are disabled.\nYou can enable them in the Settings.");
nearestLazyBlock = null;
return;
}
else if (currentPosition == null || currentPosition.IsUnknown)
{
lazyBlockUI.SetLocalProgressMessage("Acquiring position...");
lazyBlockUI.SetGlobalProgressMessage("Acquiring position...");
nearestLazyBlock = null;
return;
}
from = LatLong.Create(currentPosition.Latitude, currentPosition.Longitude);
}
else
{
from = fromStation.Location;
}
lazyBlockUI.SetLocalProgressMessage("");
lazyBlockUI.SetGlobalProgressMessage("");
nearestLazyBlock = new LazyBlock <Tuple <double, Station>[]>(
"nearest stations",
"No nearby stations",
Stations.GetNearestAsync(from, 150),
items => items.Length == 0,
lazyBlockUI,
false,
null,
null,
nearestUnfiltered =>
{
var nearestFiltered = nearestUnfiltered.AsEnumerable();
if (fromStation != null)
{
nearestFiltered = nearestFiltered.Where(t => t.Item2.Code != fromStation.Code);
}
if (excludeStation != null)
{
nearestFiltered = nearestFiltered.Where(t => t.Item2.Code != excludeStation);
}
return(nearestFiltered.ToArray());
});
}