备忘录模式 撤销

#include<iostream>#include<string>#include<vector>usingnamespacestd;
/*
struct State {
	string account;
	string password;
	string telNo;
};
class Memento {
private:
	State* state;
public:
	Memento(State* pstate) :state(pstate) {}
	State* getState() {
		return state;
	}
};
*///备忘录class Memento {private:
	string account;
	string password;
	string telNo;
public:
	Memento(string account, string password, string telNo) {
		this->account = account;
		this->password = password;
		this->telNo = telNo;
	}

	string getAccount() {
		return account;
	}
	void setAccount(string account) {
		this->account = account;
	}
	string getPassword() {
		return password;
	}
	void setPassword(string password) {
		this->password = password;
	}

	string getTelNo() {
		return telNo;
	}
	void setTelNo(string telNo) {
		this->telNo = telNo;
	}
};
//发起者class UserInfoDTO {private:
	string account;
	string password;
	string telNo;
public:
	string getAccount() {
		return account;
	}
	void setAccount(string account) {
		this->account = account;
	}
	string getPassword() {
		return password;
	}
	void setPassword(string password) {
		this->password = password;
	}

	string getTelNo() {
		return telNo;
	}
	void setTelNo(string telNo) {
		this->telNo = telNo;
	}

	Memento saveMemento() {
		Memento memento(account, password, telNo);
		return memento;
	}

	void restoreMenmento(Memento memento) {
		this->account = memento.getAccount();
		this->password = memento.getPassword();
		this->telNo = memento.getTelNo();
	}

	void show() {
		cout << "Account" + this->account << endl;
		cout << "Password" + this->password << endl;
		cout << "TelNo" + this->telNo << endl;
	}
};
//管理者class Caretaker {private:
	vector<Memento>mementos;
public:
	Memento getMemento(int i) {
		return mementos.at(i);
	}
	void setMemento(Memento memento) {
		mementos.push_back(memento);
	}
};

int main() {
	int index = -1;
	UserInfoDTO user;
	Caretaker taker;

	user.setAccount("zhangsan");
	user.setPassword("123456");
	user.setTelNo("13000000000");
	cout << "状态一：" << endl;
	taker.setMemento(user.saveMemento());
	index++;
	user.show();
	cout << "----------------------------------" << endl;

	user.setPassword("111111");
	user.setTelNo("13100001111");
	cout << "状态二：" << endl;
	taker.setMemento(user.saveMemento());
	index++;
	user.show();
	cout << "----------------------------------" << endl;

	user.setPassword("222222");
	user.setTelNo("13100001111");
	cout << "状态三：" << endl;
	user.show();
	cout << "----------------------------------" << endl;

	cout << "回到状态二:" << endl;
	index--;
	user.restoreMenmento(taker.getMemento(1));
	user.show();
	cout << "----------------------------------" << endl;

	cout << "回到状态一:" << endl;
	index --;
	user.restoreMenmento(taker.getMemento(0));
	user.show();
	cout << "----------------------------------" << endl;

}

#include<iostream>#include<string>#include<vector>usingnamespacestd; /* struct State { string account; string password; string telNo; }; class Memento { private: State* state; public: Memento(State* pstate) :state(pstate) {} State* getState() { return state; } }; *///备忘录class Memento {private: string account; string password; string telNo; public: Memento(string account, string password, string telNo) { this->account = account; this->password = password; this->telNo = telNo; } string getAccount() { return account; } void setAccount(string account) { this->account = account; } string getPassword() { return password; } void setPassword(string password) { this->password = password; } string getTelNo() { return telNo; } void setTelNo(string telNo) { this->telNo = telNo; } }; //发起者class UserInfoDTO {private: string account; string password; string telNo; public: string getAccount() { return account; } void setAccount(string account) { this->account = account; } string getPassword() { return password; } void setPassword(string password) { this->password = password; } string getTelNo() { return telNo; } void setTelNo(string telNo) { this->telNo = telNo; } Memento saveMemento() { Memento memento(account, password, telNo); return memento; } void restoreMenmento(Memento memento) { this->account = memento.getAccount(); this->password = memento.getPassword(); this->telNo = memento.getTelNo(); } void show() { cout << "Account" + this->account << endl; cout << "Password" + this->password << endl; cout << "TelNo" + this->telNo << endl; } }; //管理者class Caretaker {private: vector<Memento>mementos; public: Memento getMemento(int i) { return mementos.at(i); } void setMemento(Memento memento) { mementos.push_back(memento); } }; int main() { int index = -1; UserInfoDTO user; Caretaker taker; user.setAccount("zhangsan"); user.setPassword("123456"); user.setTelNo("13000000000"); cout << "状态一：" << endl; taker.setMemento(user.saveMemento()); index++; user.show(); cout << "----------------------------------" << endl; user.setPassword("111111"); user.setTelNo("13100001111"); cout << "状态二：" << endl; taker.setMemento(user.saveMemento()); index++; user.show(); cout << "----------------------------------" << endl; user.setPassword("222222"); user.setTelNo("13100001111"); cout << "状态三：" << endl; user.show(); cout << "----------------------------------" << endl; cout << "回到状态二:" << endl; index--; user.restoreMenmento(taker.getMemento(1)); user.show(); cout << "----------------------------------" << endl; cout << "回到状态一:" << endl; index --; user.restoreMenmento(taker.getMemento(0)); user.show(); cout << "----------------------------------" << endl; }