c++ 结构型模式-外观(Facade)

 1 #include <iostream>
 2 #include <list>
 3 class  SubSystem1
 4 {
 5 public:
 6     SubSystem1() {}
 7     virtual ~SubSystem1() {}
 8     virtual void  Operation1()
 9     {
10         std::cout << "Operation1" << std::endl;
11     }
12 };
13 class  SubSystem2
14 {
15 public:
16     SubSystem2() {}
17     virtual ~SubSystem2() {}
18     virtual void  Operation2()
19     {
20         std::cout << "Operation2" << std::endl;
21     }
22 };
23 class  SubSystem3
24 {
25 public:
26     SubSystem3() {}
27     virtual ~SubSystem3() {}
28     virtual void  Operation3()
29     {
30         std::cout << "Operation3" << std::endl;
31     }
32 };
33 class  Facade
34 {
35 public:
36     Facade() {}
37     virtual ~Facade() {}
38     virtual void  ProductA()
39     {
40         m_subSystem1.Operation1();
41         m_subSystem2.Operation2();
42     }
43     virtual void  ProductB()
44     {
45         m_subSystem2.Operation2();
46         m_subSystem3.Operation3();
47     }
48 private:
49     SubSystem1 m_subSystem1;
50     SubSystem2 m_subSystem2;
51     SubSystem3 m_subSystem3;
52 };
53  int main()
54  {
55      Facade facade;
56      facade.ProductA();
57      facade.ProductB();
58      system("pause");
59  }