protected virtual UIViewController GetViewControllerInternal([NotNull] string restorationIdentifier, [NotNull] Type type,
[NotNull] NSCoder coder, [NotNull] IDataContext context)
{
UIViewController controller = null;
Func<Type, NSCoder, IDataContext, UIViewController> factory = ViewControllerFactory;
if (factory != null)
controller = factory(type, coder, context);
if (controller == null)
{
if (type == typeof(MvvmNavigationController))
controller = new MvvmNavigationController();
else
controller = (UIViewController)ServiceProvider.IocContainer.Get(type);
}
controller.RestorationIdentifier = restorationIdentifier;
return controller;
}
protected virtual UINavigationController GetNavigationController(UIWindow window, UIViewController rootController, out bool isRootNavigated)
{
isRootNavigated = true;
if (_getOrCreateController == null)
{
var controller = window.RootViewController as UINavigationController;
if (controller == null)
{
controller = new MvvmNavigationController(rootController);
window.RootViewController = controller;
return controller;
}
isRootNavigated = false;
return controller;
}
return _getOrCreateController(window, rootController);
}
/// <summary>
/// Displays the content located at the specified <see cref="IViewMappingItem" />.
/// </summary>
/// <param name="source">
/// The <c>IViewPageMappingItem</c> of the content to display.
/// </param>
/// <param name="parameter">
/// A <see cref="T:System.Object" /> that contains data to be used for processing during
/// navigation.
/// </param>
/// <param name="dataContext">
/// The specified <see cref="IDataContext" />.
/// </param>
/// <returns>
/// <c>true</c> if the content was successfully displayed; otherwise, <c>false</c>.
/// </returns>
public virtual bool Navigate(IViewMappingItem source, object parameter, IDataContext dataContext)
{
Should.NotBeNull(source, "source");
EnsureInitialized();
if (!RaiseNavigating(new NavigatingCancelEventArgs(source, NavigationMode.New, parameter)))
return false;
if (dataContext == null)
dataContext = DataContext.Empty;
IViewModel viewModel = dataContext.GetData(NavigationConstants.ViewModel);
UIViewController viewController;
if (viewModel == null)
viewController = (UIViewController)ServiceProvider.IocContainer.Get(source.ViewType);
else
viewController = (UIViewController)ViewManager.GetOrCreateView(viewModel, null, dataContext);
viewController.SetNavigationParameter(parameter);
bool shouldNavigate = true;
if (_window != null)
{
var controller = _window.RootViewController as UINavigationController;
if (controller == null)
{
shouldNavigate = false;
controller = new MvvmNavigationController(viewController);
_window.RootViewController = controller;
}
InitializeNavigationController(controller);
}
if (shouldNavigate)
{
bool animated;
if (dataContext.TryGetData(NavigationConstants.UseAnimations, out animated))
{
if (viewModel != null)
viewModel.Settings.State.AddOrUpdate(NavigationConstants.UseAnimations, animated);
}
else
animated = UseAnimations;
if (!ClearNavigationStackIfNeed(viewController, dataContext, animated))
NavigationController.PushViewController(viewController, animated);
}
var view = viewController as IViewControllerView;
if (view == null || view.Mediator.IsAppeared)
RaiseNavigated(viewController, NavigationMode.New, parameter);
else
view.Mediator.ViewDidAppearHandler += OnViewDidAppearHandlerNew;
return true;
}