memento.cpp

c++程序

#include "Memento.h"
#include <iostream>
using namespace std;

typedef string State;

Originator::Originator() 
{ 
	_sdt = "";
	_mt = 0; 
}

Originator::Originator(const State& sdt) 
{ 
	_sdt = sdt;
	_mt = 0; 
}

Originator::~Originator() 
{
}

Memento* Originator::CreateMemento() 
{ 
	return new Memento(_sdt); 
}

State Originator::GetState() 
{ 
	return _sdt; 
}

void Originator::SetState(const State& sdt) 
{ 
	_sdt = sdt; 
}

void Originator::PrintState() 
{ 
	cout<<this->_sdt<<"....."<<endl; 
}

void Originator::SetMemento(Memento* men) 
{
}

void Originator::RestoreToMemento(Memento* mt) 
{ 
	this->_sdt = mt->GetState();
}


//class Memento

Memento::Memento() 
{ 
}

Memento::Memento(const State& sdt) 
{ 
	_sdt = sdt; 
}

State Memento::GetState() 
{ 
	return _sdt; 
}

void Memento::SetState(const State& sdt) 
{ 
	_sdt = sdt; 
}