private void OnDialogCloseRequested(object sender, DialogCloseRequestedEventArgs e)
{
IDialogRequestClose viewModel = sender as IDialogRequestClose;
IDialog dialog = instances[viewModel];
viewModel.CloseRequested -= OnDialogCloseRequested;
if (e.DialogResult.HasValue)
{
dialog.DialogResult = e.DialogResult;
}
else
{
dialog.Close();
}
}
public void Instantiate <TViewModel>(TViewModel viewModel) where TViewModel : IDialogRequestClose
{
if (instances.Select(i => i.Key.GetType()).Contains(viewModel.GetType()))
{
IDialogRequestClose oldViewModel = instances.SingleOrDefault(i => i.Key.GetType() == viewModel.GetType()).Key;
oldViewModel.CloseRequested -= OnDialogCloseRequested;
instances.Remove(oldViewModel);
}
if (!Mappings.ContainsKey(typeof(TViewModel)))
{
throw new NotRegisteredViewModelException();
}
Type viewType = Mappings[typeof(TViewModel)];
IDialog dialog = (IDialog)Activator.CreateInstance(viewType);
dialog.DataContext = viewModel;
dialog.Owner = owner;
viewModel.CloseRequested += OnDialogCloseRequested;
instances.Add(viewModel, dialog);
}
