private async Task OnAddToFavoritesCommandExecuted(object arg1, object arg2)
{
TrackingData trackingData = (TrackingData)arg2;
StopAndRoutePair stopAndRoute = trackingData.StopAndRoute;
var trackingDataViewModel = this.MainPage.ViewModel as ITrackingDataViewModel;
if (trackingDataViewModel != null)
{
if (trackingData.IsFavorite)
{
// Un-favorite all routes that match this tracking data:
foreach (var currentTrackingData in trackingDataViewModel.RealTimeData)
{
if (string.Equals(trackingData.RouteId, currentTrackingData.RouteId, StringComparison.OrdinalIgnoreCase) &&
string.Equals(trackingData.StopId, currentTrackingData.StopId, StringComparison.OrdinalIgnoreCase))
{
currentTrackingData.IsFavorite = false;
}
}
await Favorites.RemoveAsync(stopAndRoute);
}
else
{
foreach (var currentTrackingData in trackingDataViewModel.RealTimeData)
{
if (string.Equals(trackingData.RouteId, currentTrackingData.RouteId, StringComparison.OrdinalIgnoreCase) &&
string.Equals(trackingData.StopId, currentTrackingData.StopId, StringComparison.OrdinalIgnoreCase))
{
currentTrackingData.IsFavorite = true;
}
}
await Favorites.AddAsync(stopAndRoute);
}
await Favorites.PersistAsync();
}
}
