public async Task AutoWireViewModel_With_Custom_Resolver_And_Factory()
{
await ExecuteOnUIThread(() =>
{
var page = new MockPage();
// Set the ViewTypeToViewModelTypeResolver
ViewModelLocationProvider.SetDefaultViewTypeToViewModelTypeResolver((viewType) =>
{
var viewName = viewType.FullName;
// The ViewModel is in the same namespace as the View
var viewModelName = String.Format("{0}ViewModel", viewName);
return Type.GetType(viewModelName);
});
// Set the ViewTypeToViewModelTypeResolver
ViewModelLocationProvider.SetDefaultViewModelFactory((viewModelType) =>
{
// The ViewModel has a constructor with no parameters
return Activator.CreateInstance(viewModelType) as ViewModelBase;
});
// Fire AutoWireViewModelChanged
ViewModelLocator.SetAutoWireViewModel(page, true);
Assert.IsNotNull(page.DataContext);
Assert.IsInstanceOfType(page.DataContext, typeof(MockPageViewModel));
});
}
public async Task AutoWireViewModel_With_Factory_Registration()
{
await ExecuteOnUIThread(() =>
{
var page = new MockPage();
// Register the ViewModel to the page
ViewModelLocationProvider.Register(typeof(MockPage).ToString(), () => new MockPageViewModel());
// Fire AutoWireViewModelChanged
ViewModelLocator.SetAutoWireViewModel(page, true);
Assert.IsNotNull(page.DataContext);
Assert.IsInstanceOfType(page.DataContext, typeof(MockPageViewModel));
});
}
public async Task AutoWireViewModel_With_Custom_Resolver()
{
await DispatcherHelper.ExecuteOnUIThread(() =>
{
var page = new MockPage();
// Set the ViewTypeToViewModelTypeResolver
ViewModelLocationProvider.SetDefaultViewTypeToViewModelTypeResolver((viewType) =>
{
var viewName = viewType.FullName;
// The ViewModel is in the same namespace as the View
var viewModelName = String.Format("{0}ViewModel", viewName);
return Type.GetType(viewModelName);
});
// Fire AutoWireViewModelChanged
ViewModelLocator.SetAutoWireViewModel(page, true);
Assert.IsNotNull(page.DataContext);
Assert.IsInstanceOfType(page.DataContext, typeof(MockPageViewModel));
});
}
public async Task NavigateFromCurrentViewModel_Calls_VieModel_OnNavigatedFrom()
{
await ExecuteOnUIThread(() =>
{
var frame = new FrameFacadeAdapter(new Frame());
bool viewModelNavigatedFromCalled = false;
var viewModel = new MockPageViewModel();
viewModel.OnNavigatedFromCommand = (frameState, suspending) =>
{
Assert.IsFalse(suspending);
viewModelNavigatedFromCalled = true;
};
var sessionStateService = new MockSessionStateService();
sessionStateService.GetSessionStateForFrameDelegate = (currentFrame) => new Dictionary<string, object>();
var navigationService = new FrameNavigationService(frame, (pageToken) => typeof(MockPage), sessionStateService);
// Initial navigatio
navigationService.Navigate("page0", 0);
// Set up the frame's content with a Page
var view = new MockPage();
view.DataContext = viewModel;
frame.Content = view;
// Navigate to fire the NavigatedToCurrentViewModel
navigationService.Navigate("page1", 1);
Assert.IsTrue(viewModelNavigatedFromCalled);
});
}
