namespace Exercise.BureauOfMeteorology
{
    class WeatherData  
    {
        public delegate void UpdateDisplay(object sender, args e);

        public event UpdateDisplay UpdateEvent;

        public void SetMeasurements(float t, float h, float p)
        {
            args e = new args(t, h, p);

            Console.WriteLine("Began to inform all observers ..");

            if (UpdateEvent != null)
            {
                UpdateEvent(this, e);
            }

            Console.WriteLine("End to all observers ..");
        }

        public class args : EventArgs
        {
            private float temperatrue;

            public float Temperatrue
            {
                get { return temperatrue; }
                set { temperatrue = value; }
            }
            private float humidity;

            public float Humidity
            {
                get { return humidity; }
                set { humidity = value; }
            }
            private float pressure;

            public float Pressure
            {
                get { return pressure; }
                set { pressure = value; }
            }

            public args(float t, float h, float p)
            {
                this.temperatrue = t;
                this.humidity = h;
                this.pressure = p;
            }
        }
    }
}

namespace Exercise.BureauOfMeteorology.Display
{
    class CurrentConditions
    {
        public CurrentConditions(WeatherData weatherData)
        {
            weatherData.UpdateEvent += new WeatherData.UpdateDisplay(Display);
        }

        public void Display(object sender, WeatherData.args e)
        {
            Console.WriteLine(
                "CurrentConditions : " + e.Temperatrue +
                    "  F degrees and " + e.Humidity + "% humidity");
        }
    }
}
namespace Exercise.BureauOfMeteorology.Display
{
    class Forecast
    {
        public Forecast(WeatherData weatherData)
        {
            weatherData.UpdateEvent += new WeatherData.UpdateDisplay(Display);
        }

        public void Display(object sender, WeatherData.args e)
        {
            Console.WriteLine(
                "Forecast : " + e.Temperatrue +
                    "  F degrees and " + e.Humidity + "% humidity");
        }
    }
}