设计模式复习-外观模式

为了系统中的一组接口提供一个一致的界面，此模式定义了一个高层接口，这个接口使得这一子系统更加容易使用。

#pragma once
#include "stdafx.h"
#include<string>
#include<iostream>
#include<windows.h>
using namespace std;
//外观模式（Facade）

class SubSystemOne {
public:
	VOID SubSystemA() {
		cout << "SubSystem method A" << endl;
	}
};

class SubSystemTwo {
public:
	VOID SubSystemB() {
		cout << "SubSystem method B" << endl;
	}
};

class SubSystemThree {
public:
	VOID SubSystemC() {
		cout << "SubSystem method C" << endl;
	}
};

class Facade {
private:
	SubSystemOne * mpSubSystemOne = NULL;
	SubSystemTwo * mpSubSystemTwo = NULL;
	SubSystemThree * mpSubSystemThree = NULL;

public:
	Facade() {
		mpSubSystemOne = new SubSystemOne();
		mpSubSystemTwo = new SubSystemTwo();
		mpSubSystemThree = new SubSystemThree();
	}
	VOID FacadeShowA() {
		mpSubSystemOne->SubSystemA();
		mpSubSystemThree->SubSystemC();
	}
	VOID FacadeShowB() {
		mpSubSystemTwo->SubSystemB();
		mpSubSystemThree->SubSystemC();
	}
	~Facade() {
		delete mpSubSystemOne;
		delete mpSubSystemTwo;
		delete mpSubSystemThree;
	}
};



int main()
{
	Facade *pFacade = new Facade();
	pFacade->FacadeShowA();
	pFacade->FacadeShowB();
	delete pFacade;
	getchar();
	return 0;
}