private StateMachine <NavigationState, NavigationTrigger> CreateNavigationStateMachine()
{
var stateMachine = new StateMachine <NavigationState, NavigationTrigger>(NavigationState.Init);
stateMachine.Configure(NavigationState.Init)
.Permit(NavigationTrigger.Unauthorized, NavigationState.Login)
.OnExitAsync(() => _navigation.PopAsync());
stateMachine.Configure(NavigationState.Login)
.Permit(NavigationTrigger.LoginSucceeded, NavigationState.Tabs)
.OnEntryAsync(() => LoginNavigationHandler.HandleArriveAsync(NavigationKind.New))
.OnExitAsync(() => LoginNavigationHandler.HandleLeaveAsync());
stateMachine.Configure(NavigationState.Tabs)
.Permit(NavigationTrigger.SelectionRequested, NavigationState.Selector)
.OnEntryFromAsync(NavigationTrigger.LoginSucceeded, () => TabsNavigationHandler.HandleArriveAsync(NavigationKind.New))
.OnEntryFromAsync(NavigationTrigger.ItemSelected, () => TabsNavigationHandler.HandleArriveAsync(NavigationKind.Reentry))
.OnExitAsync(() => TabsNavigationHandler.HandleLeaveAsync());
stateMachine.Configure(NavigationState.Selector)
.Permit(NavigationTrigger.ItemSelected, NavigationState.Tabs)
.OnEntryAsync(() => SelectorNavigationHandler.HandleArriveAsync(NavigationKind.New))
.OnExitAsync(() => SelectorNavigationHandler.HandleLeaveAsync());
return(stateMachine);
}
public ViewPresenter(INavigation navigation, IServiceProvider serviceProvider)
{
_navigation = navigation ?? throw new ArgumentNullException(nameof(navigation));
_serviceProvider = serviceProvider ?? throw new ArgumentNullException(nameof(serviceProvider));
_stateMachine = CreateNavigationStateMachine();
LoginNavigationHandler = new LoginNavigationHandler(_serviceProvider, _navigation, _stateMachine);
TabsNavigationHandler = new TabsNavigationHandler(_serviceProvider, _navigation, _stateMachine);
SelectorNavigationHandler = new SelectorNavigationHandler(_serviceProvider, _navigation, _stateMachine);
}
