设计模式复习-桥接模式

#pragma once
#include "stdafx.h"
#include<set>
#include<string>
#include<iostream>
using namespace std;

/*
	设计模式-桥接模式（Bridge）
	将抽象部分与它的实现部分分离，使他们都可以独立地变化。
*/

class CImplementor {
public:
	virtual void Operation() = 0;
};

class CConcreteImplementorA :public CImplementor {
public:
	void Operation() {
		cout << "Execution method A" << endl;
	}
};

class CConcreteImplementorB :public CImplementor {
public:
	void Operation() {
		cout << "Execution method B" << endl;
	}
};

class CAbstraction {
protected:
	CImplementor * m_pImplementor;
public:
	CAbstraction() {
		m_pImplementor = NULL;
	}
	void SetImplementor(CImplementor *pImplementor) {
		m_pImplementor = pImplementor;
	}
	virtual void Operation() = 0;
};

class CRefinedAbstraction :public CAbstraction {

public:
	void Operation() {
		if (m_pImplementor != NULL) {
			m_pImplementor->Operation();
		}
	}

};



int main() {

	CAbstraction *pAb = new CRefinedAbstraction();
	CConcreteImplementorA *pcA = new CConcreteImplementorA();
	CConcreteImplementorB *pcB = new CConcreteImplementorB();
	pAb->SetImplementor(pcA);
	pAb->Operation();
	pAb->SetImplementor(pcB);
	pAb->Operation();
	
	getchar();
	return 0;
}