public BookingViewModel(IUnitOfWork unit, IEventAggregator eventAggregator,
IBookingCalculate calculationService,
ISearchGuestService searchGuestService,
IBookingFacade bookingFacade,
IRegionManager regionManager)
{
_unit = unit;
_calculationService = calculationService;
_searchGuestService = searchGuestService;
_bookingFacade = bookingFacade;
_eventAggregator = eventAggregator;
_regionManager = regionManager;
GuestResults = new ObservableCollection <Guest>();
SearchRooms = new SearchWrapper();
Guest = new GuestWrapper();
SearchCommand = new DelegateCommand(SearchExecute, CanSearchExecute).ObservesCanExecute(() => SearchRooms.IsEnabled);
BookCommand = new DelegateCommand <object>(BookExecute, CanBookExecute).ObservesCanExecute(() => IsGuestFormValid);
_eventAggregator.GetEvent <LoadEvent>().Subscribe(OnLoadEvent);
Calculation.GetInstance().StayTypeChanged += BookingViewModel_StayTypeChanged;
SelectedRoomChange.GetInstance().RoomSelectionChanged += BookingViewModel_RoomSelectionChanged;
SelectedGuestEvent.GetInstance().SelectedGuestChanged += OnSelectedGuestChange;
SearchRooms.StateChanged += SearchRooms_StateChanged;
Guest.StateChanged += Guest_StateChanged;
}
public void OnNavigatedFrom(NavigationContext navigationContext)
{
Guest.StateChanged -= Guest_StateChanged;
Calculation.GetInstance().StayTypeChanged -= BookingViewModel_StayTypeChanged;
SelectedRoomChange.GetInstance().RoomSelectionChanged -= BookingViewModel_RoomSelectionChanged;
SearchRooms.StateChanged -= SearchRooms_StateChanged;
SelectedGuestEvent.GetInstance().SelectedGuestChanged -= OnSelectedGuestChange;
}