/// <summary>
/// Register a ViewModel agains a View
/// </summary>
/// <param name="viewModel">The ViewModel type</param>
/// <param name="view">The View type</param>
public void Register(Type view, Type viewModel = null)
{
ViewMapAttribute map = view.GetAttribute <ViewMapAttribute>();
if (map == null)
{
if (viewModel == null)
{
return;
}
map = new ViewMapAttribute(viewModel);
}
map.View = view;
_resolver.Register(view);
_resolver.Register(map.ViewModel);
_mappings[map.ViewModel] = map;
}
/// <summary>
/// Resolves a View and its related ViewModel
/// </summary>
/// <param name="viewModelType">The ViewModel type</param>
/// <param name="vm">The output ViewModel instance</param>
/// <returns>The ViewModel instance</returns>
public Xamarin.Forms.Page Resolve(Type viewModelType, out IViewModel viewModel)
{
var vm = _resolver.Resolve(viewModelType) as ViewModel;
Xamarin.Forms.Application.Current.On <iOS>().SetPanGestureRecognizerShouldRecognizeSimultaneously(true);
Xamarin.Forms.Page view = null;
ViewMapAttribute map = _mappings[viewModelType];
if (vm == null || map == null)
{
throw new InvalidOperationException("View Model not mapped!");
}
Xamarin.Forms.Page pageView = _resolver.Resolve(map.View) as Xamarin.Forms.Page;
if (pageView == null)
{
string message = string.Format("Page not mapped! View Model: {0}", viewModelType);
throw new InvalidOperationException(message);
}
if (map.MenuViewModel == null)
{
view = pageView;
view.On <iOS>().SetUseSafeArea(true);
}
else
{
IViewModel menuViewModel = null;
Xamarin.Forms.Page menuView = Resolve(map.MenuViewModel, out menuViewModel);
if (menuView != null)
{
pageView.BindingContext = vm;
pageView.Parent = null;
menuView.Parent = null;
if (string.IsNullOrWhiteSpace(menuView.Title))
{
menuView.Title = menuView.GetType().Name;
}
if (string.IsNullOrWhiteSpace(pageView.Title))
{
pageView.Title = pageView.GetType().Name;
}
view = new MasterDetailPage
{
Master = menuView,
Detail = pageView
};
pageView.On <iOS>().SetUseSafeArea(true);
}
}
view.Title = vm.Title;
view.BindingContext = vm;
if (map.HideNavigation)
{
Xamarin.Forms.NavigationPage.SetHasNavigationBar(view, false);
}
viewModel = vm;
return(view);
}
