设计模式学习笔记-结构型模式-Facade模式

Facade.h

#pragma once

class Subsys1
{
public:
	Subsys1();
	~Subsys1();

	void Operation();
};

class Subsys2
{
public:
	Subsys2();
	~Subsys2();

	void Operation();
};

class Facade
{
public:
	Facade();
	~Facade();

	void OperationWrapper();

private:
	Subsys1* _subs1;
	Subsys2* _subs2;
};

Facade.cpp

#include "Facade.h"
#include 
using namespace std;


Facade::Facade()
{
	_subs1 = new Subsys1();
	_subs2 = new Subsys2();
}


Facade::~Facade()
{
	delete _subs1;
	delete _subs2;
}

void Facade::OperationWrapper()
{
	_subs1->Operation();
	_subs2->Operation();
}

Subsys1::Subsys1()
{
}

Subsys1::~Subsys1()
{
}

void Subsys1::Operation()
{
	cout << "Subsystem1 operation.." << endl;
}

Subsys2::Subsys2()
{
}

Subsys2::~Subsys2()
{
}

void Subsys2::Operation()
{
	cout << "Subsystem2 operation.." << endl;
}

main.cpp

#include 
#include "Facade.h"
using namespace std;

int main(int argc, char* argv[])
{
	Facade* f = new Facade();
	f->OperationWrapper();

	system("pause");
	return 0;
}

Subsystem1 operation..
Subsystem2 operation..
请按任意键继续. . .

Facade （外观）模式就是找一个人代理你想要做的所有事情，在高层提供了一个统一的接口，只要维护他和他的简单的一个接口，同时解耦了系统