public NavigationRoot(IDetailNavigation detailNavigation, IViewFor <NavigationMenuViewModel> menuPage)
{
InitializeComponent();
NavigationPage.SetHasNavigationBar(this, false);
detailNavigation.PushPage <MainViewModel>(resetStack: true, animate: false).Subscribe();
Detail = (NavigationView)detailNavigation.View;
Master = (ContentPage)menuPage;
menuPage
.WhenAnyObservable(x => x.ViewModel.Navigate)
.Select(_ => false)
.BindTo(this, x => x.IsPresented);
Events
.DeviceDisplayMainDisplayInfoChanged
.Where(x => x.DisplayInfo.Orientation == DisplayOrientation.Landscape && Device.Idiom == TargetIdiom.Tablet)
.Subscribe(x => MasterBehavior = MasterBehavior.SplitOnLandscape)
.DisposeWith(_masterDetailBindings);
// HACK: [rlittlesii: July 04, 2020] This is a hack around a Xamarin.Forms iOS issue.
this.WhenAnyValue(x => x.IsPresented)
.Where(x => Device.RuntimePlatform == Device.iOS)
.ObserveOn(RxApp.MainThreadScheduler)
.Subscribe(_ => Master.IconImageSource = ImageSource.FromFile("hamburger.png"))
.DisposeWith(_masterDetailBindings);
ViewModel = new NavigationRootViewModel();
}
public NavigationMenuViewModel(IDetailNavigation detailNavigation)
{
_detailNavigation = detailNavigation;
Items = new ReadOnlyObservableCollection <NavigationItemViewModel>(
new ObservableCollection <NavigationItemViewModel>
{
new NavigationItemViewModel
{
Title = "List View", Icon = ListAlt, IViewFor = typeof(ListOptionsViewModel)
},
new NavigationItemViewModel
{
Title = "Collection View", Icon = LayerGroup, IViewFor = typeof(CollectionOptionsViewModel)
}
});
Navigate = ReactiveCommand.CreateFromObservable <NavigationItemViewModel, Unit>(ExecuteNavigate);
}
public ListOptionsViewModel()
{
_detailNavigation = Locator.Current.GetService <IDetailNavigation>();
Navigate = ReactiveCommand.CreateFromObservable <OptionViewModel, Unit>(ExecuteNavigate);
Items = new ObservableCollection <OptionViewModel>
{
new OptionViewModel {
Option = ListOption.DetailNavigation
},
new OptionViewModel {
Option = ListOption.Search
},
new OptionViewModel {
Option = ListOption.InfiniteScroll
}
};
}
