/// <summary>
/// The Observer Pattern defines a one-to-many dependency between objects so that
/// when one object changes state, all of its dependents are notified and updated
/// automatically. Object which changes state is called - subject. Object which
/// subscribes to subject is called - observer.
/// </summary>
/// <param name="args"></param>
static void Main(string[] args)
{
var weatherData = new WeatherData();
var currentDisplay = new CurrentConditionsDisplay(weatherData);
weatherData.SetMeasurments(80, 65, 30.4f);
Thread.Sleep(2000);
weatherData.SetMeasurments(82, 10, 29.4f);
Thread.Sleep(2000);
weatherData.SetMeasurments(78, 90, 29.2f);
}
static void Main(string[] args)
{
WeatherData weatherData = new WeatherData();
CurrentConditionDisply currentConditionDisply = new CurrentConditionDisply(weatherData);
StaisticsDisply staisticsDisply = new StaisticsDisply(weatherData);
ForcastDisply forcastDisply = new ForcastDisply(weatherData);
weatherData.SetMeasurments(30, 65, 30.5F);
Console.WriteLine("---------------移除订阅者-----------");
weatherData.RemoveObserver(currentConditionDisply);
weatherData.SetMeasurments(31, 55, 20);
Console.WriteLine("---------------添加订阅者-----------");
weatherData.RegisterObserver(currentConditionDisply);
weatherData.SetMeasurments(30, 55, 30.5F);
Console.ReadKey();
}
