public static void NavigateForResult <TViewController, TResult>(
[NotNull] this NavigationServiceBase navigationService,
[NotNull] IIosView <IViewModelWithResultHandler> fromView,
[NotNull] TViewController toView,
bool animated,
[CanBeNull] ForwardNavigationDelegate navigationStrategy = null)
where TViewController : UIViewController, IIosView <IViewModelWithResult <TResult> >
where TResult : ViewModelResultBase
{
if (navigationService == null)
{
throw new ArgumentNullException(nameof(navigationService));
}
if (fromView == null)
{
throw new ArgumentNullException(nameof(fromView));
}
if (toView == null)
{
throw new ArgumentNullException(nameof(toView));
}
toView.ResultSetWeakSubscribe(fromView.HandleResult);
var navigationController = fromView.GetNavigationController();
(navigationStrategy ?? NavigationStrategy.Forward.Default()).Invoke(navigationController, toView, animated);
}
public static void Navigate <TViewController>(
[NotNull] this NavigationServiceBase navigationService,
[NotNull] IIosView fromView,
[NotNull] TViewController toView,
bool animated,
[CanBeNull] ForwardNavigationDelegate navigationStrategy = null)
where TViewController : UIViewController
{
if (navigationService == null)
{
throw new ArgumentNullException(nameof(navigationService));
}
if (fromView == null)
{
throw new ArgumentNullException(nameof(fromView));
}
if (toView == null)
{
throw new ArgumentNullException(nameof(toView));
}
var navigationController = fromView.GetNavigationController();
(navigationStrategy ?? NavigationStrategy.Forward.Default()).Invoke(navigationController, toView, animated);
}
internal static IIosView <IViewModel> FindParentViewWithModel([NotNull] this UIViewController parent)
{
IIosView <IViewModel> parentView = null;
var parentViewController = parent;
while (parentView == null && parentViewController != null)
{
parentView = parentViewController as IIosView <IViewModel>;
parentViewController = parentViewController.ParentViewController;
}
return(parentView);
}
public static void RemoveChild(this IIosView parent, Widget control)
{
var parentViewController = parent.Controller;
if (parentViewController != null)
{
// wire up view controllers, if both have one
var childController = control.GetViewController(false);
if (childController != null)
{
childController.RemoveFromParentViewController();
}
}
control.GetContainerView().RemoveFromSuperview();
}
public static void AddChild(this IIosView parent, Widget control)
{
var parentViewController = parent.Controller;
if (parentViewController != null)
{
// wire up view controllers, if both have one
var childController = control.GetViewController(false);
if (childController != null)
{
parentViewController.AddChildViewController(childController);
}
}
parent.ContentControl.AddSubview(control.GetContainerView());
}
public static IDisposable ResultSetWeakSubscribe(
[NotNull] this IIosView <IViewModel> iosView,
[NotNull] EventHandler <ViewModelResultSetEventArgs> resultSetHandler)
{
if (iosView == null)
{
throw new ArgumentNullException(nameof(iosView));
}
if (resultSetHandler == null)
{
throw new ArgumentNullException(nameof(resultSetHandler));
}
return(new WeakEventSubscription <IIosView <IViewModel>, ViewModelResultSetEventArgs>(
iosView,
(eventSource, eventHandler) => eventSource.NotNull().ResultSet += eventHandler,
(eventSource, eventHandler) => eventSource.NotNull().ResultSet -= eventHandler,
resultSetHandler));
}
public static UINavigationController GetNavigationController([NotNull] this IIosView view)
{
if (view == null)
{
throw new System.ArgumentNullException(nameof(view));
}
UINavigationController parentNavigationControllerOrSelf = null;
if (view is UINavigationController navigationController)
{
parentNavigationControllerOrSelf = navigationController;
}
else if (view is UIViewController viewController)
{
parentNavigationControllerOrSelf = viewController.NavigationController;
}
return(parentNavigationControllerOrSelf);
}
public static void NavigateBack <TResult>(
[NotNull] this NavigationServiceBase navigationService,
[NotNull] IIosView <IViewModelWithResult <TResult> > fromView,
ViewModelResultCode resultCode,
[CanBeNull] TResult result,
bool animated,
[CanBeNull] BackwardNavigationDelegate navigationStrategy = null)
where TResult : ViewModelResultBase
{
if (navigationService == null)
{
throw new ArgumentNullException(nameof(navigationService));
}
if (fromView == null)
{
throw new ArgumentNullException(nameof(fromView));
}
fromView.SetResult(resultCode, result);
var navigationController = fromView.GetNavigationController();
(navigationStrategy ?? NavigationStrategy.Backward.Default()).Invoke(navigationController, fromView, animated);
}
