十一、职责链模式

职责链模式：使多个对象都有机会处理请求，从而避免请求的发送者和接收者之间的耦合关系。将这个对象连成一条链，并沿着这条链传递该请求，直到有一个对象处理它为止。

#include<iostream>
#include<string>
using namespace std;
//请求
class request
{
public:
	string type;//类型
	int count;//数量
	string content;//内容
public:
	request(string m_type, int len ,string m_content):type(m_type),count(len),content(m_content){}
};
//抽象管理类
class Manger
{
protected:
	string m_name;
	Manger *super;
public:
	Manger(string name):m_name(name){}
	virtual void setsuper(Manger *m_super)
	{
		super = m_super;
	}
	virtual void requestapplication(request m_request){}
};
//经理
class jingli:public Manger
{
public:
	jingli(string name):Manger(name){}
	void requestapplication(request m_request)
	{
		if(m_request.type=="请假" && m_request.count<3)
		{
			cout<<m_name<<": "<<m_request.content<<"数量："<<m_request.count<<" 批准"<<endl;
		}
		else
		{
			super->requestapplication(m_request);
		}
	}
};
//主管
class zhuguan:public Manger
{
public:
	zhuguan(string name):Manger(name){}
	void requestapplication(request m_request)
	{
		if(m_request.type=="请假" && m_request.count<5)
		{
			cout<<m_name<<": "<<m_request.content<<"数量："<<m_request.count<<" 批准"<<endl;
		}
		else
		{
			super->requestapplication(m_request);
		}
	}
};
//总经理
class zongjingli:public Manger
{
public:
	zongjingli(string name):Manger(name){}
	void requestapplication(request m_request)
	{
		if(m_request.type=="请假" && m_request.count<10)
		{
			cout<<m_name<<": "<<m_request.content<<"数量："<<m_request.count<<" 批准"<<endl;
		}
		else
		{
			cout<<m_name<<": "<<m_request.content<<"数量："<<m_request.count<<" 不批准"<<endl;
		}
	}
};
int main()
{
	request *myrequest = new request("请假" ,6,"小明请假");
	jingli *m_jingli = new jingli("经理");
	zhuguan*m_zhuguan = new zhuguan("主管");
	zongjingli *m_zongjingli = new zongjingli("总经理");

	m_jingli->setsuper(m_zhuguan);
	m_zhuguan->setsuper(m_zongjingli);

	m_jingli->requestapplication(*myrequest);
	myrequest->count=100;
	cout<<endl;
	m_jingli->requestapplication(*myrequest);
	myrequest->count=1;
	cout<<endl;
	m_jingli->requestapplication(*myrequest);
	return 0;
}