c++ 结构型模式-桥接(Bridge)

 1  #include <iostream>
 2 class  Implementor
 3 {
 4 public:
 5     Implementor() {}
 6     virtual ~Implementor() {}
 7     virtual void  OperationImp() = 0;
 8 };
 9 class  ConcreteImplementorA : public Implementor
10 {
11 public:
12     virtual void  OperationImp()
13     {
14         std::cout << "print by ConcreteImplementorA" << std::endl;
15     }
16 };
17 class  ConcreteImplementorB : public Implementor
18 {
19 public:
20     virtual void  OperationImp()
21     {
22         std::cout << "print by ConcreteImplementorB" << std::endl;
23     }
24 };
25 class  Abstraction
26 {
27 public:
28     Abstraction(Implementor* imp):m_Imp(imp) {}
29     virtual ~Abstraction() {}
30     void  Operation()
31     {
32         if (m_Imp)
33         {
34             m_Imp->OperationImp();
35         }
36     }
37 private:
38     Implementor* m_Imp;
39 };
40 
41  int main()
42  {
43      Implementor* imp1 = new ConcreteImplementorA();
44      Abstraction* abs1 = new Abstraction(imp1);
45      abs1->Operation();
46 
47      Implementor* imp2 = new ConcreteImplementorB();
48      Abstraction* abs2 = new Abstraction(imp2);
49      abs2->Operation();
50 
51      delete imp1;
52      delete abs1;
53      delete imp2;
54      delete abs2;
55      system("pause");
56  }