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C
// 中介者模式(Mediator),用一个中介对象来封装一系列的对象交互。中介者使各对象不需要显示得相互引用#xff0c;从而使得其耦合松散#xff0c;而且可以独立地改变他们之间得交互#include iostream
#include stringusing namespace std;#d…中介者模式
C
// 中介者模式(Mediator),用一个中介对象来封装一系列的对象交互。中介者使各对象不需要显示得相互引用从而使得其耦合松散而且可以独立地改变他们之间得交互#include iostream
#include stringusing namespace std;#define SAFE_DELETE(p) \if (p) \{ \delete p; \p NULL \}class Mediator;// 抽象同事类
class Colleague
{
public:Colleague(Mediator *pMediator) : m_pMediator(pMediator){}; // 得到中介者对象virtual void Send(char *message) 0;protected:Mediator *m_pMediator;
};// 具体同事1
class ConcreteColleague1 : public Colleague
{
public:ConcreteColleague1(Mediator *pMediator) : Colleague(pMediator){};virtual void Send(char *message);void Notify(char *message){cout 同事1得到消息: message endl;}
};
// 具体同事2
class ConcreteColleague2 : public Colleague
{
public:ConcreteColleague2(Mediator *pMediator) : Colleague(pMediator){};virtual void Send(char *message);void Notify(char *message){cout 同事2得到消息: message endl;}
};// 主管
class Mediator
{
public:virtual void Send(char *message, Colleague *pColleague) 0;
};void ConcreteColleague1::Send(char *message)
{m_pMediator-Send(message, this);
}void ConcreteColleague2::Send(char *message)
{m_pMediator-Send(message, this);
}
// 具体主管
class ConcreteMediator : public Mediator
{
public:// 重写声明方法 实现了两个对象得通信void Send(char *message, Colleague *pColleague){ConcreteColleague1 *pConcreteColleague1 dynamic_castConcreteColleague1 *(pColleague);if (pConcreteColleague1){cout 消息来自同事1 endl;if (m_pColleague2){m_pColleague2-Notify(message);}}else{cout 消息来自同事2 endl;if (m_pColleague1){m_pColleague1-Notify(message);}}}// 具体主管了解改组下的所有得同事.... 所以拥有同事1和同事2得所有属性void setColleague1(Colleague *pColleague){m_pColleague1 dynamic_castConcreteColleague1 *(pColleague);}void setColleague2(Colleague *pColleague){m_pColleague2 dynamic_castConcreteColleague2 *(pColleague);}private:ConcreteColleague1 *m_pColleague1; // 同事1ConcreteColleague2 *m_pColleague2; // 同事2
};int main(int argc, char **argv)
{Mediator *pMediator new ConcreteMediator();Colleague *pColleague1 new ConcreteColleague1(pMediator);Colleague *pColleague2 new ConcreteColleague2(pMediator);ConcreteMediator *pConcreteMediator dynamic_castConcreteMediator *(pMediator);pConcreteMediator-setColleague1(pColleague1);pConcreteMediator-setColleague2(pColleague2);char message1[128] 你吃饭了吗?;pColleague1-Send(message1);char message2[128] 还没呢;pColleague2-Send(message2);delete pColleague1;delete pColleague2;delete pMediator;return 0;
}C
#include stdio.h
#include stdlib.h
#include string.htypedef struct Mediator Mediator;
typedef struct Colleague Colleague;// 定义抽象同事
typedef struct Colleague
{void (*send)(Colleague *self, char *message);void (*notify)(Colleague *self, char *message);Mediator *mediator;
} Colleague;// 定义中介者
typedef struct Mediator
{void (*send)(Mediator *self, char *message, Colleague *pColleague);Colleague *colleague1;Colleague *colleague2;
} Mediator;// 创建同事
Colleague *create_colleague(void (*send)(Colleague *self, char *message),void (*notify)(Colleague *self, char *message))
{Colleague *colleague malloc(sizeof(Colleague));colleague-send send;colleague-notify notify;colleague-mediator NULL;return colleague;
}// 创建中介者
Mediator *create_mediator()
{Mediator *mediator malloc(sizeof(Mediator));mediator-send NULL;mediator-colleague1 NULL;mediator-colleague2 NULL;return mediator;
}// 具体同事1的发送函数
void concrete_colleague1_send(Colleague *self, char *message)
{self-mediator-send(self-mediator, message, self);
}// 具体同事1的通知函数
void concrete_colleague1_notify(Colleague *self, char *message)
{printf(同事1得到消息:%s\n, message);
}// 具体同事2的发送函数
void concrete_colleague2_send(Colleague *self, char *message)
{self-mediator-send(self-mediator, message, self);
}// 具体同事2的通知函数
void concrete_colleague2_notify(Colleague *self, char *message)
{printf(同事2得到消息:%s\n, message);
}// 具体中介者的发送函数
void concrete_mediator_send(Mediator *self, char *message, Colleague *pColleague)
{if (self-colleague1 pColleague){printf(消息来自同事1\n);if (self-colleague2 ! NULL){self-colleague2-notify(self-colleague2, message);}}else{printf(消息来自同事2\n);if (self-colleague1 ! NULL){self-colleague1-notify(self-colleague1, message);}}
}int main()
{Mediator *mediator create_mediator();mediator-send concrete_mediator_send;Colleague *colleague1 create_colleague(concrete_colleague1_send, concrete_colleague1_notify);Colleague *colleague2 create_colleague(concrete_colleague2_send, concrete_colleague2_notify);colleague1-mediator mediator;colleague2-mediator mediator;mediator-colleague1 colleague1;mediator-colleague2 colleague2;char message1[] 你吃饭了吗?;colleague1-send(colleague1, message1);char message2[] 还没呢;colleague2-send(colleague2, message2);free(colleague1);free(colleague2);free(mediator);return 0;
}
