初学设计模式之命令模式

Posted 2020-11-30 wuhongjian

命令模式的代码例子

 1 #include<iostream>
 2 using namespace std;
 3 class team1
 4 {
 5 public:
 6     void DoSomeing()
 7     {
 8         cout<<"做一些事情"<<endl;
 9     }
10 };
11 
12 class team2
13 {
14 public:
15     void DoSomeing()
16     {
17         cout<<"做一些事情"<<endl;
18     }
19 };
20 
21 class team3
22 {
23 public:
24     void DoSomeing()
25     {
26         cout<<"做一些事情"<<endl;
27     }
28 };
29 
30 class Command
31 {
32 protected:
33     team1 m_team1;
34     team2 m_team2;
35     team3 m_team3;
36 public:
37     virtual void exec()
38     {};
39 
40 };
41 
42 class ConcreteCommand1:public Command
43 {
44 public:
45     void exec()
46     {
47         m_team1.DoSomeing();
48     };
49 
50 };
51 class Invoker
52 {
53 private:
54     Command* m_CommandPtr;
55 public:
56     void AddCommand(Command *m_commandPtr)
57     {
58         m_CommandPtr=m_commandPtr;
59     };
60     void Action()
61     {
62         m_CommandPtr->exec();
63     };
64 
65 };
66 
67 
68 int main()
69 {
70     ConcreteCommand1 m_ConcreteCommand1;
71     Invoker m_Invoker;
72     m_Invoker.AddCommand(&m_ConcreteCommand1);
73     m_Invoker.Action();
74     getchar();
75     return 0;
76 
77 }