public void Implement()
{
Console.WriteLine("\nLearning Observer Pattern\n");
WeatherData weatherData = new WeatherData(temperature: 40, pressure: 120, humidity: 20);
Console.WriteLine(weatherData.ToString());
IObserver sObserver = new StatisticsDisplay();
weatherData.RegisterObserver(sObserver);
IObserver fObserver = new ForecastDisplay();
weatherData.RegisterObserver(fObserver);
IObserver gObserver = new GeneralDisplay();
weatherData.RegisterObserver(gObserver);
weatherData.NotifyObserver();
sObserver.Display();
fObserver.Display();
gObserver.Display();
weatherData.DataChanged(temperature: 20, pressure: 80, humidity: 10); //Just a dummy method which updates the weather data
Console.WriteLine($"\nWeather changed {weatherData.ToString()}");
sObserver.Display();
fObserver.Display();
gObserver.Display();
Console.WriteLine("\nObserver Removed: General Display");
weatherData.RemoveObserver(gObserver);
weatherData.DataChanged(temperature: -20, pressure: 20, humidity: 0); //Just a dummy method which updates the weather data
sObserver.Display();
fObserver.Display();
gObserver.Display();
}
static void Main(string[] args)
{
WeatherData weatherData = new WeatherData();
IObserver observer = new CurrentConditionsView(weatherData);
weatherData.UpdateConditions(21.5f, 15, 25);
weatherData.DataChanged();
weatherData.UpdateConditions(35f, 10, 10);
weatherData.DataChanged();
}
