public bool?ShowDialog <TViewModel>(TViewModel viewModel) where TViewModel : IGameWindowRequestClose
{
Type viewType = Mappings[typeof(TViewModel)];
IGameWindow gameWindow = (IGameWindow)Activator.CreateInstance(viewType);
EventHandler <GameWindowCloseRequestedEventArgs> handler = null;
handler = (sender, e) =>
{
viewModel.CloseRequested -= handler;
if (e.DialogResult.HasValue)
{
gameWindow.DialogResult = e.DialogResult;
}
else
{
gameWindow.Close();
}
};
viewModel.CloseRequested += handler;
gameWindow.DataContext = viewModel;
gameWindow.Owner = _owner;
return(gameWindow.ShowDialog());
}