public NavigationHistory(MainViewModel viewModel)
: base(viewModel)
{
_backHistory = new LinkedList<ViewModel>();
_forwardHistory = new LinkedList<ViewModel>();
ViewModel.WorkWindowChanged += ViewModelOnWorkWindowChanged;
}
protected NavigationCommandModule(MainViewModel viewModel)
{
if (viewModel == null)
{
throw new ArgumentNullException("viewModel");
}
ViewModel = viewModel;
}
