protected override async void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (e.NavigationMode == NavigationMode.Back || e.NavigationMode == NavigationMode.New)
{
// Remove all from backstack except home
if (this.Frame.BackStackDepth > 1)
{
var home = this.Frame.BackStack.ElementAt(0);
this.Frame.BackStack.Clear();
this.Frame.BackStack.Add(home);
}
}
if (e.Parameter != null)
{
string arg = e.Parameter.ToString();
switch (arg)
{
case "toast-refresh":
await RefreshLocations();
return;
default:
break;
}
}
if (Settings.FollowGPS)
{
GPSPanel.Visibility = Visibility.Visible;
}
else
{
GPSPanelViewModel[0] = null;
GPSPanel.Visibility = Visibility.Collapsed;
}
bool reload = (!Settings.FollowGPS && LocationPanels.Count == 0) ||
(Settings.FollowGPS && GPSPanelViewModel.First() == null);
if (reload || e.NavigationMode == NavigationMode.New)
{
// New instance; Get locations and load up weather data
await LoadLocations();
}
else
{
// Refresh view
await RefreshLocations();
}
}
private async Task RefreshLocations()
{
// Disable EditMode button
EditButton.IsEnabled = false;
// Reload all panels if needed
var locations = await Settings.GetLocationData();
var homeData = await Settings.GetLastGPSLocData();
bool reload = (locations.Count != LocationPanels.Count || (Settings.FollowGPS && (GPSPanelViewModel.First() == null)));
// Reload if weather source differs
if ((GPSPanelViewModel.First() != null && GPSPanelViewModel.First().WeatherSource != Settings.API) ||
(LocationPanels.Count >= 1 && LocationPanels[0].WeatherSource != Settings.API))
{
reload = true;
}
// Reload if panel queries dont match
if (!reload && (GPSPanelViewModel.First() != null && homeData.query != GPSPanelViewModel.First().LocationData.query))
{
reload = true;
}
if (reload)
{
LocationPanels.Clear();
await LoadLocations();
}
else
{
var dataset = LocationPanels.ToList();
if (GPSPanelViewModel.First() != null)
{
dataset.Add(GPSPanelViewModel.First());
}
foreach (LocationPanelViewModel view in dataset)
{
var wLoader = new WeatherDataLoader(view.LocationData, this, this);
await wLoader.LoadWeatherData(false);
}
}
// Enable EditMode button
EditButton.IsEnabled = true;
}
public void OnWeatherLoaded(LocationData location, Weather weather)
{
if (weather?.IsValid() == true)
{
if (Settings.FollowGPS && location.locationType == LocationType.GPS)
{
GPSPanelViewModel.First()?.SetWeather(weather);
}
else
{
var panelView = LocationPanels.First(panelVM => panelVM.LocationData.query == location.query);
// Just in case
if (panelView == null)
{
panelView = LocationPanels.First(panelVM => panelVM.LocationData.name.Equals(location.name) &&
panelVM.LocationData.latitude.Equals(location.latitude) &&
panelVM.LocationData.longitude.Equals(location.longitude) &&
panelVM.LocationData.tz_long.Equals(location.tz_long));
}
panelView?.SetWeather(weather);
}
}
}