protected override async void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (this.DataContext == null)
{
string taskIdString = "";
if (NavigationContext.QueryString.TryGetValue("id", out taskIdString))
{
this.IsEnabled = false;
//Lade bekannten Task.
SystemTrayHelper.ShowProgress(this, Localization.Strings.MainPageProgressIndicatorLoggingIn, 1);
await App.DataManager.LogInTask;
SystemTrayHelper.ShowProgress(this, Localization.Strings.TaskPageProgressIndicatorLoadingTask, 1);
var task = await App.DataManager.GetTask(taskIdString);
SystemTrayHelper.HideProgress(this);
if (task != null)
{
this.DataContext = new TaskPageViewModel(App.DataManager, task);
this.IsEnabled = true;
}
else
{
if (System.Diagnostics.Debugger.IsAttached) //Fehler, selbst online existiert der Task nicht
{
System.Diagnostics.Debugger.Break();
}
Controls.SafeMessageBox.Show(Localization.Strings.TaskPageNotFoundMessage, "");
isRemoved = true;
this.NavigationService.GoBack();
return;
}
}
else //Neuer Task wurde erstellt.
{
if (NavigationContext.QueryString.TryGetValue("copy", out taskIdString))
{
this.DataContext = TaskPageViewModel.CreateTask(App.DataManager, taskIdString);
}
else
{
this.DataContext = TaskPageViewModel.CreateTask(App.DataManager);
}
}
}
SetupAppBar();
}
/// <summary>
/// Aktualisiert das SystemTray gemäß dem was der DataManager grade macht.
/// </summary>
private async void DoSystemTrayStuff()
{
SystemTrayHelper.ShowProgress(this, Localization.Strings.MainPageProgressIndicatorLoggingIn, 0.5);
if (App.DataManager.LogInTask != null)
{
await App.DataManager.LogInTask;
}
SystemTrayHelper.ShowProgress(this, Localization.Strings.MainPageProgressIndicatorUploading, 0.5);
if (App.DataManager.SyncUploadTask != null)
{
await App.DataManager.SyncUploadTask;
}
SystemTrayHelper.ShowProgress(this, Localization.Strings.MainPageProgressIndicatorSyncing, 0.5);
if (App.DataManager.SyncDownloadTask != null)
{
await App.DataManager.SyncDownloadTask;
}
SystemTrayHelper.Hide(this);
}