教学课件 软件设计模式--孙玉山.ppt

Hotel Airport TourCompany 使用中介者模式解耦 TourMediator 使用中介者模式进行设计的例子 HotelGUI -mdtr TourMediator +reserveRoom() +checkIn() +checkOut() +notifyAirline() +notifyTour() +display() TourGUI -mdtr TourMediator +reserveRoom() +checkIn() +checkOut() +notifyAirline() +notifyTour() +display() TourMediator hotelGui: HotelGUI; airlineGui: AirlineGUI; tourGui: TourGUI +registerHotelGUI(HotelGUI hg) +registerAirlineGUI(AirlineGUI ag +registerTourGUI(TourGUI tg) +updateAllGuis(String text) AirlineGUI -mdtr TourMediator +reserveRoom() +checkIn() +checkOut() +notifyAirline() +notifyTour() +display() 使用中介者模式进行设计的宾馆-机场-旅游公司信息共享系统 public class BusinessMediator{ private HotelGUI hotelGui; private AirlineGUI airlineGui; private TourGUI tourGui; public void registerHotelGUI(HotelGUI hg) { hotelGui = hg; } public void registerAirlineGUI(AirlineGUI ag) { airlineGui = ag; } public void registerTourGUI(TourGUI tg) { tourGui = tg; } public void updateAllGuis(String option, String text) { if(pareTo(AirlineGUI.AIR)==0) { hotelGui.displayInfoToScreen(text); tourGui.displayInfoToScreen(text); } else if(pareTo(HotelGUI.HOTEL)==0){ airlineGui.displayInfoToScreen(text); tourGui.displayInfoToScreen(text); } } 使用中介者模式进行设计的例子 Java源代码 public class AirlineGUI extends JFrame { public AirlineGUI (BusinessMediator bMdtr) { bMdtr.registerAirlineGUI(this); } class ButtonListener implements ActionListener { public void actionPerformed(ActionEvent ae) { if (ae.getActionCommand().equals(SUBMIT)) { setCusName(); String cusInfo = getCusName(); bMediator.updateAllGuis(AIR, cusInfo); } } } 使用中介者模式进行设计的例子 public class HotelGUI extends JFrame { public HotelGUI (BusinessMediator bMdtr) { bMdtr.registerAirlineGUI(this); } class ButtonListener implements ActionListene