结构型-代理模式
//代理模式:为其他对象提供一种代理以控制对这个对象的访问
#include <iostream>
using namespace std;
//提供一种代理来控制对其他对象的访问
class AbstractCommonInterface{
public:
virtual void run() = 0;
};
//我已经写好的系统
class MySystem : public AbstractCommonInterface{
public:
virtual void run(){
cout << "系统启动..." << endl;
}
};
//必须有要权限验证,不是所有人都能来启动我的启动,提供用户名和密码
class MySystemProxy : public AbstractCommonInterface{
public:
MySystemProxy(string username, string password){
this->mUsername = username;
this->mPassword = password;
pSystem = new MySystem;
}
bool checkUsernameAndPassword(){
if(mUsername == "admin" && mPassword == "admin"){
return true;
}
return false;
}
virtual void run(){
if(checkUsernameAndPassword()){
cout << "用户名和密码正确,验证通过...";
this->pSystem->run();
}else{
cout << "用户名和密码错误,权限不足...";
}
}
~MySystemProxy(){
if(pSystem != NULL){
delete pSystem;
}
}
public:
MySystem* pSystem;
string mUsername;
string mPassword;
};
void test01(){
MySystemProxy* proxy = new MySystemProxy("admin", "admin");
proxy->run();
}
int main()
{
test01();
system("pause");
return 0;
}