protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
busArrivalUpdateTimer.Start();
viewModel.RegisterEventHandlers(Dispatcher);
UpdateAppBar(true);
if (isFiltered == true)
{
viewModel.LoadArrivalsForStop(viewModel.CurrentViewState.CurrentStop, viewModel.CurrentViewState.CurrentRoute);
}
else
{
viewModel.LoadArrivalsForStop(viewModel.CurrentViewState.CurrentStop, null);
}
// When we enter this page after tombstoning often the location won't be available when the map
// data binding queries CurrentLocationSafe. The center doesn't update when the property changes
// so we need to explicitly set the center once the location is known.
viewModel.LocationTracker.RunWhenLocationKnown(delegate(GeoCoordinate location)
{
Dispatcher.BeginInvoke(() =>
{
DetailsMap.Center = location;
//calculate distance to current stop and zoom map
if (viewModel.CurrentViewState.CurrentStop != null)
{
if (location.IsUnknown ||
location.Latitude < -90.0 || location.Latitude > 90 ||
location.Longitude < -180.0 || location.Longitude > 180)
{
// location is bogus. don't try to set the map view with it.
}
else
{
GeoCoordinate stoplocation = new GeoCoordinate(viewModel.CurrentViewState.CurrentStop.coordinate.Latitude,
viewModel.CurrentViewState.CurrentStop.coordinate.Longitude);
double radius = 2 * location.GetDistanceTo(stoplocation) * 0.009 * 0.001; // convert metres to degrees and double
radius = Math.Max(radius, minimumZoomRadius);
radius = Math.Min(radius, maximumZoomRadius);
DetailsMap.SetView(new LocationRect(location, radius, radius));
}
}
DetailsMap_MapZoom(this, null);
});
}
);
}
void FullScreenMapPage_Loaded(object sender, RoutedEventArgs e)
{
if (viewModel.CurrentViewState.CurrentSearchLocation != null)
{
// Using mapHasMoved prevents us from relocating the map if the user reloads this
// page from the back stack
if (mapHasMoved == false)
{
Dispatcher.BeginInvoke(() =>
{
//DetailsMap.Center = viewModel.CurrentViewState.CurrentSearchLocation.location;
DetailsMap.SetView(viewModel.CurrentViewState.CurrentSearchLocation.boundingBox);
viewModel.LoadStopsForLocation(viewModel.CurrentViewState.CurrentSearchLocation.location);
}
);
}
}
else
{
viewModel.LocationTracker.RunWhenLocationKnown(delegate(GeoCoordinate location)
{
Dispatcher.BeginInvoke(() =>
{
// If the user has already moved the map, don't relocate it
if (mapHasMoved == false)
{
DetailsMap.Center = location;
}
viewModel.LoadStopsForLocation(location);
}
);
}
);
}
}