private static void AddDialog(IDialogViewModel viewModel, IDialogViewModelCollection collection, Window owner)
{
// find the global resource that has been keyed to this view model type
var resource = Application.Current.TryFindResource(viewModel.GetType());
if (resource == null)
{
return;
}
// is this resource a presenter?
if (IsAssignableToGenericType(resource.GetType(), typeof(IDialogBoxPresenter <>)))
{
resource.GetType().GetMethod("Show").Invoke(resource, new object[] { viewModel, owner });
collection.Remove(viewModel);
}
// is this resource a dialog box window?
else if (resource is Window)
{
var userViewModel = viewModel as IUserDialogViewModel;
if (userViewModel == null)
{
return;
}
var dialog = resource as Window;
dialog.DataContext = userViewModel;
DialogBoxes[userViewModel] = dialog;
userViewModel.DialogClosing += (sender, args) =>
collection.Remove(sender as IUserDialogViewModel);
dialog.Closing += (sender, args) =>
{
if (!(bool)dialog.GetValue(ClosingProperty))
{
dialog.SetValue(ClosingProperty, true);
userViewModel.RequestClose();
if (!(bool)dialog.GetValue(ClosedProperty))
{
args.Cancel = true;
dialog.SetValue(ClosingProperty, false);
}
}
};
dialog.Closed += (sender, args) =>
{
Debug.Assert(DialogBoxes.ContainsKey(userViewModel));
DialogBoxes.Remove(userViewModel);
return;
};
dialog.Owner = owner;
if (userViewModel.IsModal)
{
dialog.ShowDialog();
}
else
{
dialog.Show();
}
}
}
public bool Show(IDialogViewModelCollection collection)
{
collection.Add(this);
return(this.Result);
}
public MessageBoxResult Show(IDialogViewModelCollection collection)
{
collection.Add(this);
return(this.Result);
}
public static void SetDialogViewModels(DependencyObject source, IDialogViewModelCollection value)
{
source.SetValue(DialogViewModelsProperty, value);
}
public virtual void Show(IDialogViewModelCollection dialogs)
{
dialogs.Add(this);
}