Design-patterns/ChainOfResponsibility.cpp at master · beautifularea/Design-patterns · GitHub

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//
//  ChainOfResp.hpp
//  COns
//
//  Created by zhTian on 16/5/5.
//  Copyright © 2016年 zhTian. All rights reserved.
//

#ifndef ChainOfResp_hpp
#define ChainOfResp_hpp

#include <stdio.h>

#include <iostream>
#include <string>
using namespace std;

// 请求
class Request
{
public:
    int m_nNumber;
};

// 管理者
class Manager
{
public:
    Manager(string temp) { name = temp; }
    void SetSuccessor(Manager* temp) { manager = temp; }
    virtual void GetRequest(Request* request) = 0;
    virtual ~Manager();
protected:
    Manager* manager;
    string name;
};

// 经理
class CommonManager : public Manager
{
public:
    CommonManager(string strTemp) : Manager(strTemp) {}
    virtual void GetRequest(Request* request);
};

void CommonManager::GetRequest(Request* request)
{
    if (request->m_nNumber>=0 && request->m_nNumber<1000)
    {
        cout << name << " 处理了请求: " << request->m_nNumber << endl;
    }
    else
    {
        manager->GetRequest(request);
    }
}

// 总监
class Majordomo : public Manager
{
public:
    Majordomo(string strTemp) : Manager(strTemp) {}
    virtual void GetRequest(Request* request);
};

void Majordomo::GetRequest(Request* request)
{
    if (request->m_nNumber <= 5000)
    {
        cout << name << " 处理了请求: " << request->m_nNumber << endl;
    }else
    {
        manager->GetRequest(request);
    }
}

//总经理
class GeneralManager: public Manager
{
public:
    GeneralManager(string name):Manager(name) {}
    virtual void GetRequest(Request* request)  //总经理可以处理所有请求
    {
        cout << name << " 处理了请求: " << request->m_nNumber << endl;
    }
};

class COR_Demo
{
public:
    void excute()
    {
        Manager* common = new CommonManager("张经理");
        Manager* major = new Majordomo("李总监");
        GeneralManager* general  = new GeneralManager("赵总");
        common->SetSuccessor(major);
        major->SetSuccessor(general);
        Request* rq = new Request();

        rq->m_nNumber = 999;
        common->GetRequest(rq);

        rq->m_nNumber = 4999;
        common->GetRequest(rq);

        rq->m_nNumber = 6999;
        common->GetRequest(rq);

        delete rq;
        delete major;
        delete common;
        delete general;
    }
};

#endif /* ChainOfResp_hpp */