Facade 外观模式

　

      GOOD：为子系统的一组接口提供一个一致的界面。使用户使用起来更加方便。

例：

#include<iostream>

#include <string>

using namespace std;

 

class SubSysOne

{

public:

       void MethodOne()

       {

              cout<<"方法一"<<endl;

       }

};

 

class SubSysTwo

{

public:

       void MethodTwo()

       {

              cout<<"方法二"<<endl;

       }

};

 

class SubSysThree

{

public:

       void MethodThree()

       {

              cout<<"方法三"<<endl;

       }

};

 

//外观类

class Facade

{

private:

       SubSysOne* sub1;

       SubSysTwo* sub2;

       SubSysThree* sub3;

public:

       Facade()

       {

              sub1 = new SubSysOne();

              sub2 = new SubSysTwo();

              sub3 = new SubSysThree();

       }

       ~Facade()

       {

              delete sub1;

              delete sub2;

              delete sub3;

       }

 

       void FacadeMethod()

      {

             sub1->MethodOne();

             sub2->MethodTwo();

             sub3->MethodThree();

      }

};

 

//客户端

int main()

{

       Facade* test = new Facade();

       test->FacadeMethod();

       return 0;

}