public delegate void SubEventHandle();
public abstract class Subject
{
public event SubEventHandle SubEvent;
public void OnSub()
{
if (SubEvent != null)
SubEvent();
}
}
public abstract class Observer
{
public Observer(Subject sub)
{
sub.SubEvent += new SubEventHandle(Response);
}
protected abstract void Response();
}
public class Mouse : Observer
{
public Mouse(Subject sub):base(sub)
{
}
public override void Response()
{
}
}
public class Master : Observer
{
public Master(Subject sub) : base(sub)
{
}
protected override void Response()
{
}
}
public class Cat : Subject
{
private List<Observer> observers;
public Cat()
{
observers = new List<Observer>();
}
public void Cry()
{
base.OnSub();
}
}
