using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace 状态模式
{
public interface State
{
void doSomething(Person p);
}
public class Mstate : State
{
public void doSomething(Person p)
{
if (p.hours == 7)
{
Console.WriteLine("吃早餐");
}
else
{
p.state = new Lstate();
p.doSomething();
}
}
}
public class Lstate : State
{
public void doSomething(Person p)
{
if (p.hours == 12)
{
Console.WriteLine("吃午餐");
}
else
{
p.state =new Nstate();
p.doSomething();
}
}
}
public class Nstate : State
{
public void doSomething(Person p)
{
if (p.hours == 18)
{
Console.WriteLine("吃晚餐");
}
else
{
p.state =new NOstate();
p.doSomething();
}
}
}
public class NOstate : State
{
public void doSomething(Person p)
{
Console.WriteLine("没得吃");
}
}
public class Person
{
public State state { get; set; }
public int hours { get; set; }
public Person()
{
state=new Mstate();
}
public void doSomething()
{
state.doSomething(this);
state=new Mstate();
}
}
class Program
{
static void Main(string[] args)
{
Person p=new Person();
p.hours = 7;
p.doSomething();
p.hours = 12;
p.doSomething();
p.hours = 18;
p.doSomething();
p.hours = 8;
p.doSomething();
p.hours = 7;
p.doSomething();
Console.ReadKey();
}
}
}