/// <summary>
/// Creates a new <see cref="WpfViewProvider"/>.
/// </summary>
public WpfViewProvider(INavigationHistory history)
{
History = history;
}
public NavigationWindow(INavigationHistory?history = null)
{
this.history = history ?? new NoNavigationHistory();
}
/// <summary>
/// Gets the <see cref="Type"/> of the view-model active in the current <see cref="INavigationLayer"/> of the navigation history.
/// </summary>
/// <param name="history">The <see cref="INavigationHistory"/> being queried.</param>
/// <returns>The <see cref="Type"/> of the currently active view-model, or 'null' if no active view-model was found.</returns>
public static Type GetActiveViewModelType(this INavigationHistory history)
{
return(history.CurrentLayer.CurrentViewModel?.GetType());
}
/// <summary>
/// Retrieves a collection of all active <see cref="IViewModel"/>s in all <see cref="INavigationLayer"/>s of the navigation history.
/// </summary>
/// <param name="history">The <see cref="INavigationHistory"/> being queried.</param>
/// <returns>A collection of all non-null <see cref="INavigationLayer.CurrentViewModel"/>s for all navigation history layers.</returns>
public static IEnumerable <IViewModel> GetActiveViewModels(this INavigationHistory history)
{
return(history.Layers.Select(l => l.CurrentViewModel).Where(v => v != null));
}
/// <summary>
/// Creates a new <see cref="BaseCommandRouter"/>.
/// </summary>
public BaseCommandRouter(INavigationHistory navigationHistory, IEnumerable <ICommandProvider> commandProviders)
{
NavigationHistory = navigationHistory;
CommandProviders = commandProviders;
}
/// <summary>
/// Creates a new <see cref="NavigationService"/> from the provided services.
/// </summary>
public NavigationService(IViewProvider viewProvider, INavigationHistory history, ILifetimeScope scope)
{
ViewProvider = viewProvider;
History = history;
LifetimeScope = scope;
}
/// <summary>
/// Creates a new <see cref="UwpViewProvider"/>.
/// </summary>
public UwpViewProvider(IEnumerable <IDispatcher> dispatchers, INavigationHistory history)
{
UILayers = new List <ContentControl>();
Dispatchers = dispatchers;
History = history;
}
