设计模式10——命令模式

 1 #ifndef Command_H_H
 2 #define Command_H_H
 3 
 4 #include <iostream>
 5 #include <vector>
 6 using namespace std;
 7 
 8 
 9 class Cooker
10 {
11 public:
12     void makeIce() { cout << "Make a Ice!" << endl; }
13     void makeJuice() { cout << "Make a Juice!" << endl; }
14 };
15 
16 class Command
17 {
18 public:
19     Command() : cooker(NULL) {}
20     virtual void excute() = 0;
21     virtual ~Command() {}
22     void setCooker(Cooker *cooker0) { cooker = cooker0; }
23 protected:
24     Cooker *cooker;
25 };
26 
27 class CommandIce : public Command
28 {
29 public:
30     virtual void excute() { cooker->makeIce();  }
31 };
32 
33 class CommandJuice : public Command
34 {
35 public:
36     virtual void excute() { cooker->makeJuice(); }
37 };
38 
39 class Waiter
40 {
41 public:
42     Waiter() : cooker(NULL) {}
43     void addCommand(Command *command){
44         command->setCooker(cooker);
45         vecCommand.push_back(command);
46     }
47     void sendCommand(){
48         for(size_t i=0; i<vecCommand.size(); ++i){
49             vecCommand[i]->excute();
50         }
51     }
52     void setCooker(Cooker *cooker0) { cooker = cooker0; }
53 
54 private:
55     vector<Command*> vecCommand;
56     Cooker* cooker;
57 };
58 
59 
60 
61 void CommandTest()
62 {
63     Cooker *cooker = new Cooker();
64     Waiter *waiter = new Waiter();
65     waiter->setCooker(cooker);
66 
67     Command *command1 = new CommandIce();
68     Command *command2 = new CommandJuice();
69     waiter->addCommand(command1);
70     waiter->addCommand(command2);
71 
72     waiter->sendCommand();
73     delete waiter;
74     delete cooker;
75 }
76 
77 #endif