public NavigationBase(IViewFactory viewFactory, INavigationStack navigationStack)
{
if (viewFactory == null)
throw new ArgumentNullException(nameof(viewFactory));
if (navigationStack == null)
throw new ArgumentNullException(nameof(navigationStack));
_viewFactory = viewFactory;
this.NavigationStack = navigationStack;
_navigationContext = new NavigationContext(this);
navigationStack.NavigatedTo += navigationStack_NavigatedTo;
navigationStack.NavigatingFrom += navigationStack_NavigatingFrom;
navigationStack.PageDisposed += navigationStack_PageDisposed;
navigationStack.PropertyChanged += navigationStack_PropertyChanged;
}
// *** Constructors ***
public NavigationBase(IViewFactory viewFactory)
{
this.viewFactory = viewFactory;
this.navigationContext = new NavigationContext(this);
}