private static void Main(string[] args)
{
var weatherStation = new WeatherStation();
var tvDisplay = new TvDisplay();
var phoneDisplay = new PhoneDisplay();
weatherStation.AddObserver(tvDisplay);
weatherStation.AddObserver(phoneDisplay);
while (true)
{
weatherStation.Broadcast(string.Format("Hello display {0}", DateTime.UtcNow));
Thread.Sleep(1000);
}
}
static void Main(string[] args)
{
var weatherStation = new WeatherStation();
var newsChannel1 = new NewsChannel("Independence TV");
weatherStation.AddObserver(newsChannel1);
var newsChannel2 = new NewsChannel("India Tomorrow");
weatherStation.AddObserver(newsChannel2);
weatherStation.Temperature = 10.2f;
weatherStation.Temperature = 23.2f;
weatherStation.Temperature = 45.2f;
}
static void Main(string[] args)
{
// Create weather station - Observable
WeatherStation weatherStation = new WeatherStation();
// Create Displays - Observers
TemperatureDisplay temperatureDisplay = new TemperatureDisplay();
WindDisplay windDisplay = new WindDisplay();
// Add Observers to Observable
weatherStation.Add(temperatureDisplay);
weatherStation.Add(windDisplay);
// To demonstrate, manually triiger the Notify() of the observable
weatherStation.Notify();
}
private static void ObserverDesignPattern()
{
Console.WriteLine("Observer Pattern Example:");
Console.WriteLine("-------------------------------------------------------------------");
var weatherStation = new WeatherStation();
var currentConditionsDisplay = new CurrentConditionsDisplay();
var staticsDisplay = new StaticsDisplay();
weatherStation.registerObserver(currentConditionsDisplay);
weatherStation.registerObserver(staticsDisplay);
weatherStation.setMeasurements(12, 23, 45);
Console.WriteLine("-------------------------------------------------------------------");
}
static void Main(string[] args)
{
WeatherStation weatherStation = new WeatherStation();
NewsAgency agency1 = new NewsAgency("Alpha");
NewsAgency agency2 = new NewsAgency("Beta");
NewsAgency agency3 = new NewsAgency("Gamma");
NewsAgency agency4 = new NewsAgency("Delta");
weatherStation.Attach(agency1);
weatherStation.Attach(agency2);
weatherStation.Attach(agency3);
weatherStation.Attach(agency4);
weatherStation.Temperature = 22.1f;
weatherStation.Temperature = 37.5f;
weatherStation.Temperature = 49.4f;
weatherStation.Temperature = 0.4f;
}
static void Main(string[] args)
{
IWeatherObservable station = new WeatherStation();
StandardDisplay weatherDisplay = new StandardDisplay(station);
FancyDisplay fancyWeatherDisplay = new FancyDisplay(station);
station.SetMeasurments(new WeatherData()
{
Humidity = 69, Pressure = 90, RainQuantity = 46, Temperature = 28
});
station.Unsubscribe(fancyWeatherDisplay);
Console.WriteLine("Fancy display unsubscribed");
station.SetMeasurments(new WeatherData()
{
Humidity = 60, Pressure = 99, RainQuantity = 11, Temperature = 26
});
fancyWeatherDisplay.GetWeatherData();
}
/// <summary>
/// Definition:
/// The observer pattern defines a one to many dependencies between objects so that when one object changes state,
/// all of it's dependencies are notified and updated automatically.
/// </summary>
static void Main(string[] args)
{
WeatherStation station = new WeatherStation();
TabletDisplay tabletDisplay = new TabletDisplay(station);
PhoneDisplay phoneDisplay = new PhoneDisplay(station);
station.Add(tabletDisplay);
station.Add(phoneDisplay);
station.Notify();
station.Remove(tabletDisplay);
station.Notify();
station.Add(tabletDisplay);
station.Notify();
Console.WriteLine("\n--- Let's update the temperatur --- ");
station.UpdateTemperatur(50);
Console.ReadKey();
}
static void Main(string[] args)
{
WeatherStation station = new WeatherStation(37);
PhoneDisplay display1 = new PhoneDisplay(station);
PhoneDisplay display2 = new PhoneDisplay(station);
PhoneDisplay display3 = new PhoneDisplay(station);
station.Add(display1);
station.Add(display2);
station.Add(display3);
display1.Display();
display2.Display();
display3.Display();
station.Temperature = 40;
display1.Display();
display2.Display();
display3.Display();
}
static void Main(string[] args)
{
WeatherStation weatherStation = new WeatherStation();
NewsAgency agency1 = new NewsAgency("Best News Agency");
weatherStation.Attach(agency1);
NewsAgency agency2 = new NewsAgency("Fake News Agency");
weatherStation.Attach(agency2);
NewsAgency agency3 = new NewsAgency("Yellow Press Agency");
weatherStation.Attach(agency3);
weatherStation.Temp = 18.4f;
weatherStation.Temp = 25.6f;
weatherStation.Temp = 31.4f;
weatherStation.Temp = 14.4f;
weatherStation.Temp = 29.6f;
Console.ReadKey();
}
public SmartDevice(IObservable publisher)
{
var weatherStation = (WeatherStation)publisher;
_weatherStation = weatherStation;
}
static void Main(string[] args)
{
var stLouisWeatherStation = new WeatherStation();
var kansasCityWeatherStation = new WeatherStation();
var myPhone = new PhoneApp(stLouisWeatherStation);
var yourPhone = new PhoneApp(kansasCityWeatherStation);
var myDevice = new SmartDevice(stLouisWeatherStation);
var yourDevice = new SmartDevice(kansasCityWeatherStation);
Console.WriteLine("My Phone:");
myPhone.Display();
Console.WriteLine("Your Phone:");
yourPhone.Display();
Console.WriteLine("My Device:");
myDevice.Display();
Console.WriteLine("Your Device:");
yourDevice.Display();
Console.WriteLine("Register subscribers");
stLouisWeatherStation.Register(myPhone);
stLouisWeatherStation.Register(myDevice);
kansasCityWeatherStation.Register(yourPhone);
kansasCityWeatherStation.Register(yourDevice);
Console.WriteLine("My Phone:");
myPhone.Display();
Console.WriteLine("Your Phone:");
yourPhone.Display();
Console.WriteLine("My Device:");
myDevice.Display();
Console.WriteLine("Your Device:");
yourDevice.Display();
Console.WriteLine("Temperature in St. Louis changes to 72.3");
Console.WriteLine("Humidity in St. Louis changes to 42.1");
stLouisWeatherStation.Temperature = 72.3M;
stLouisWeatherStation.Humidity = 42.1M;
Console.WriteLine("My Phone:");
myPhone.Display();
Console.WriteLine("Your Phone:");
yourPhone.Display();
Console.WriteLine("My Device:");
myDevice.Display();
Console.WriteLine("Your Device:");
yourDevice.Display();
Console.WriteLine("Temperature in Kansas City changes to 73.8");
Console.WriteLine("Humidity in Kansas City changes to 41.3");
kansasCityWeatherStation.Temperature = 73.8M;
kansasCityWeatherStation.Humidity = 41.3M;
Console.WriteLine("My Phone:");
myPhone.Display();
Console.WriteLine("Your Phone:");
yourPhone.Display();
Console.WriteLine("My Device:");
myDevice.Display();
Console.WriteLine("Your Device:");
yourDevice.Display();
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
}
public Phone(WeatherStation weatherStation)
{
_weatherStation = weatherStation;
}
public void GetWeatherData()
{
WeatherData data = WeatherStation.GetMeasurments();
Console.WriteLine("Requested manually: temperature: {0}, humidity: {1}, pressure {2}", data.Temperature, data.Humidity, data.Pressure);
}
public PhoneDisplay(WeatherStation weatherStation)
{
this.weatherStation = weatherStation;
}
public PhoneApp(IObservable publisher)
{
var weatherStation = (WeatherStation)publisher;
_weatherStation = weatherStation;
}
public Form1()
{
InitializeComponent();
station = new WeatherStation();
comboBox1.DataSource = Enum.GetValues(typeof(Weather));
}
public Television(WeatherStation weatherStation)
{
_weatherStation = weatherStation;
}
public MobileDevice(WeatherStation station)
{
_weatherStation = station;
}
public TabletDisplay(WeatherStation weatherStation)
{
this.weatherStation = weatherStation;
}