/// <summary>
/// Loads the state.
/// </summary>
/// <param name="args">The view model arguments.</param>
public async Task LoadState(UploadViewModelArgs args)
{
await base.LoadState();
_editingMode = EditingMode.New;
Category = args.Category?.ToCategory();
try
{
// The user needs to be signed-in
await _authEnforcementHandler.CheckUserAuthentication();
// When navigating directly from the main window, the user has not
// selected a category yet, so we need to do this now.
if (Category == null)
{
Category = await _navigationFacade.ShowCategoryChooserDialog();
}
// Here is some synchronization issue going on,
// when we first set the Photo which propagates to the UI
// via data binding, and immediately open a ContentDialog via ShowCategoryChooserDialog.
// We would get random component initialization exceptions from XAML
// without any further details. This however is only noticeable when
// the app is launched as share target.
// As a solution, we assign the selected photo after the chooser dialog
// has been awaited.
WriteableBitmap = args.Image;
}
catch (SignInRequiredException)
{
await _dialogService.ShowNotification("AuthenticationRequired_Message", "AuthenticationRequired_Title");
_navigationFacade.GoBack();
}
}