/*
         * Updates the BookingComponent instance currently loaded in the
         * system.
         */
        public void UpdateBooking(DateTime arrival, DateTime departure)
        {
            List <PersonComponent>  savedGuests = CurrentBook.GetGuests();
            List <BookingDecorator> decorationStack;
            BookingComponent        booking = CurrentBook.Unwrap(out decorationStack);

            booking = bFact.UpdateBooking(booking.GetBookingNb(),
                                          CurrentCust,
                                          arrival,
                                          departure);

            if (decorationStack != null)
            {
                foreach (BookingDecorator reference in decorationStack)
                {
                    reference.Setcomponent(booking);
                    booking = reference;
                }
            }

            CurrentBook = booking;

            foreach (PersonComponent g in savedGuests)
            {
                CurrentBook.AddGuest(g);
            }
        }
        /*
         * Adds current customer to current booking's list of guests.
         */
        public void AddCustomerToGuests(String passportNb, int age)
        {
            List <PersonComponent> savedGuests = CurrentBook.GetGuests();
            DateTime arrival;
            DateTime departure;

            CurrentBook.GetDates(out arrival, out departure);

            CurrentCust = pFact.GetNewGuest(CurrentCust,
                                            passportNb,
                                            age);
            CurrentBook = bFact.UpdateBooking(CurrentBook.GetBookingNb(),
                                              CurrentCust,
                                              arrival,
                                              departure);

            foreach (PersonComponent g in savedGuests)
            {
                CurrentBook.GetGuests().Add(g);
            }

            CurrentBook.AddGuest(CurrentCust);
        }
        // METHOD RELATED TO CURRENT BOOKING'S GUESTS:

        /*
         * Adds a new person to current booking's list of guests.
         */
        public void AddGuest(String name, String passportNb, int age)
        {
            CurrentBook.AddGuest(pFact.GetNewGuest(name, passportNb, age));
        }