public Practice()
{
InitializeComponent();
session = new PracticeViewModel();
isNewInstance = true;
Loaded += OnLoaded;
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
if (NavigationContext.QueryString.ContainsKey("resume") || (isNewInstance && e.NavigationMode != NavigationMode.New)) {
try {
using (var storage = IsolatedStorageFile.GetUserStoreForApplication()) {
using (var file = storage.OpenFile("Session", FileMode.Open, FileAccess.Read, FileShare.Read)) {
using (var sr = new StreamReader(file)) {
var json = JsonValue.Parse(sr);
session = new JsonContext().FromJson<PracticeViewModel>(json);
}
}
}
}
catch (IsolatedStorageException) { }
catch (IOException) { }
catch (FormatException) {}
return;
}
base.OnNavigatedTo(e);
}
void SessionChanged(PracticeViewModel oldValue)
{
if (oldValue != null) {
oldValue.Finished -= PracticeFinished;
oldValue.FinishedRound -= PracticeFinishedRound;
}
session = Session;
session.Finished += PracticeFinished;
session.FinishedRound += PracticeFinishedRound;
if (session.IsFinished)
GoToState(GameState.GameOverview);
else if (session.CurrentItem == null)
GoToState(GameState.RoundOverview);
else
GoToState(GameState.Guessing);
}
void OnLoaded(object sender, RoutedEventArgs routedEventArgs)
{
if (!isNewInstance)
return;
isNewInstance = false;
if (NavigationContext.QueryString.ContainsKey("resume")) {
DataContext = session;
gamePanel.Visibility = Visibility.Visible;
return;
}
if (State.ContainsKey("Session")) {
DataContext = session = RestoreJsonState<PracticeViewModel>("Session");
gamePanel.Visibility = Visibility.Visible;
return;
}
// TODO: Doesn't download terms from API if not cached
var sets = ((from setID in this.GetIDListParameter<long>("sets", required: false)
select App.ViewModel.GetSet(setID, true))
.Concat(from g in this.GetIDListParameter<long>("groups", required: false).Select(App.ViewModel.GetGroup)
where g != null
from set in g.Sets
select set)).ToArray();
foreach (var set in sets)
set.LoadTerms();
TryDownloadTerms(sets);
}
void EndSession(object sender, EventArgs e)
{
session = null;
NavigationService.GoBack();
}