// Extension Methods
// *** Navigation ***
#region public static void Navigate(this IRoutingState router, IRoutableViewModel viewModel, IRoutingParams routingParams)
/// <summary>
/// Navigates the specified router.
/// </summary>
/// <param name="router">The router.</param>
/// <param name="viewModel">The view model.</param>
/// <param name="routingParams">The routing parameters.</param>
public static void Navigate(this IRoutingState router, IRoutableViewModel viewModel, IRoutingParams routingParams)
{
if (router != null)
{
router.Navigate.Execute(new RoutableViewModelWithParams(viewModel, routingParams));
}
}
/// <summary>
/// Navigates the specified router.
/// </summary>
/// <param name="router">The router.</param>
/// <param name="viewModel">The view model.</param>
/// <param name="notInNavigationStack">if set to <c>true</c> [not in navigation stack].</param>
public static void Navigate(this IRoutingState router, IRoutableViewModel viewModel, bool notInNavigationStack)
{
router.Navigate(viewModel,
new RoutingParams
{
NotInNavigationStack = notInNavigationStack
});
}
IObservable<Page> pageForViewModel(IRoutableViewModel vm)
{
if (vm == null) return Observable.Empty<Page>();
var ret = ViewLocator.Current.ResolveView(vm);
if (ret == null) {
var msg = String.Format(
"Couldn't find a View for ViewModel. You probably need to register an IViewFor<{0}>",
vm.GetType().Name);
return Observable.Throw<Page>(new Exception(msg));
}
ret.ViewModel = vm;
var pg = (Page)ret;
pg.Title = vm.UrlPathSegment;
return Observable.Return(pg);
}
/// <summary>
/// Navigates the specified router.
/// </summary>
/// <param name="router">The router.</param>
/// <param name="viewModel">The view model.</param>
/// <param name="notInNavigationStack">if set to <c>true</c> [not in navigation stack].</param>
/// <param name="reuseExistingView">if set to <c>true</c> [reuse existing view].</param>
public static void Navigate(this IRoutingState router, IRoutableViewModel viewModel, bool notInNavigationStack, bool reuseExistingView)
{
router.Navigate(viewModel,
new CustomRoutingParams
{
NotInNavigationStack = notInNavigationStack,
ReuseExistingView = reuseExistingView
});
}
/// <summary>
/// Navigates the specified view model.
/// </summary>
/// <param name="viewModel">The view model.</param>
/// <param name="notInNavigationStack">if set to <c>true</c> [not in navigation stack].</param>
/// <exception cref="System.NotImplementedException"></exception>
public void Navigate(IRoutableViewModel viewModel, bool notInNavigationStack = false)
{
var viewModelWithParams = viewModel as IRoutableViewModelWithParams;
if (viewModelWithParams != null)
{
if (viewModelWithParams.RoutingParams != null)
{
viewModelWithParams.RoutingParams.NotInNavigationStack = notInNavigationStack;
}
else
{
viewModelWithParams.RoutingParams = new RoutingParams { NotInNavigationStack = notInNavigationStack };
}
AppModel.Router.Navigate(viewModelWithParams.RoutableViewModel, viewModelWithParams.RoutingParams);
}
else
{
AppModel.Router.Navigate(viewModel, notInNavigationStack);
}
}
/// <summary>
/// Navigates the specified view model.
/// </summary>
/// <param name="viewModel">The view model.</param>
/// <param name="routingParams">The routing parameters.</param>
/// <exception cref="System.NotImplementedException"></exception>
public void Navigate(IRoutableViewModel viewModel, IRoutingParams routingParams)
{
AppModel.Router.Navigate(viewModel, routingParams);
}
private UIViewController ResolveView (IRoutableViewModel viewModel, string contract)
{
if (viewModel == null) {
return null;
}
var viewLocator = this.ViewLocator ?? ReactiveUI.ViewLocator.Current;
var view = viewLocator.ResolveView (viewModel, contract);
if (view == null) {
throw new Exception (
string.Format (
"Couldn't find a view for view model. You probably need to register an IViewFor<{0}>",
viewModel.GetType ().Name));
}
view.ViewModel = viewModel;
var viewController = view as UIViewController;
if (viewController == null) {
throw new Exception (
string.Format (
"View type {0} for view model type {1} is not a UIViewController",
view.GetType ().Name,
viewModel.GetType ().Name));
}
return viewController;
}
