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();
}
public void OnSelect(GeneralDisplay d)
{
if (selected != null)
{
selected.Deselect();
}
OnListElementSelectedEvent(d.displayed);
selected = d;
}
static void Main(string[] args)
{
WeatherData observable = new WeatherData();
IObserver observer = new GeneralDisplay(observable);
IObserver observerOther = new StatisticsDisplay(observable);
observable.SetCurrentTemperature(12.2);
observerOther.QuitObserve();
observable.SetCurrentTemperature(15.2);
}
public void ForceSelect(int index)
{
if (selectable)
{
if (index < displayPool.usedObjects.Count)
{
GeneralDisplay d = displayPool.usedObjects[index].GetComponent <GeneralDisplay>();
OnSelect(d);
}
}
}
private void Start()
{
if (display == null)
{
display = GetComponent <GeneralDisplay>();
if (display == null)
{
Debug.LogError("Player Display couldn't find GeneralDisplay on " + gameObject.name);
}
}
PlayerManager.instance.activePlayer.OnPlayerDetailsChangeEvent += DisplayPlayer;
}
private void Start()
{
if (display == null)
{
display = GetComponent <GeneralDisplay>();
if (display == null)
{
Debug.LogError("Company Display couldn't find Text on " + gameObject.name);
}
}
PlayerManager.instance.activePlayer.OnActiveCompanyChangeEvent += PlayerCompanyChange;
}
public ObserverPatternRunner()
{
rnd = new Random();
display = new ForecastDisplay();
general = new GeneralDisplay();
stats = new StatsDisplay();
station = new WeatherStation();
data = new WeatherData();
station.AddObserver(display);
station.AddObserver(general);
station.AddObserver(stats);
station.State = data;
}
public void Display(IDisplayed[] toDisplay)
{
displayPool.ReleaseAll();
foreach (IDisplayed d in toDisplay)
{
GameObject g = displayPool.GetGameObject();
GeneralDisplay display = g.GetComponent <GeneralDisplay>();
display.Display(d);
display.OnSelectEvent -= OnSelect;
display.selectable = this.selectable;
if (selectable)
{
display.OnSelectEvent += OnSelect;
}
}
}
public static void Main(string[] args)
{
WeatherStation weatherStation = new WeatherStation();
GeneralDisplay subscriber1 = new GeneralDisplay(weatherStation);
weatherStation.MeasurementsChanged(20, 770, 50);
ForecastDisplay subscriber2 = new ForecastDisplay(weatherStation);
weatherStation.MeasurementsChanged(18, 769, 54);
weatherStation.Unsubscribe(subscriber2);
weatherStation.MeasurementsChanged(15, 750, 78);
weatherStation.Unsubscribe(subscriber1);
weatherStation.MeasurementsChanged(14, 745, 90);
weatherStation.Subscribe(subscriber1);
weatherStation.MeasurementsChanged(13, 740, 99);
}
/// <summary>
/// O padrão Observer define a dependência um-para-muitos entre objetos para que quando um objeto mude de estado todos os seus dependentes
/// sejam avisados e atualizados automaticamente.
/// </summary>
public static void TestObserver()
{
WeatherData weatherData = new WeatherData();
ForecastDisplay forecastDisplay = new ForecastDisplay();
StatisticsDisplay statisticsDisplay = new StatisticsDisplay();
GeneralDisplay generalDisplay = new GeneralDisplay();
Console.WriteLine("Adding forecast display and setting temperature.");
weatherData.AddObserver(forecastDisplay);
weatherData.Temperature = 18.1f;
Console.WriteLine();
Console.WriteLine("Adding statistics and general display and setting humidity.");
weatherData.AddObserver(statisticsDisplay);
weatherData.AddObserver(generalDisplay);
weatherData.Humidity = 8.3f;
Console.WriteLine();
Console.WriteLine("Removing statistics display and setting pressure.");
weatherData.DeleteObserver(statisticsDisplay);
weatherData.Pressure = 3.6f;
}
public static void Main(string[] args)
{
WeatherStation weatherStation = new WeatherStation();
GeneralDisplay subscriber1 = new GeneralDisplay("Display 1", weatherStation);
weatherStation.MeasurementsChanged(20, 770, 50);
GeneralDisplay subscriber2 = new GeneralDisplay("Display 2", weatherStation);
weatherStation.MeasurementsChanged(18, 769, 54);
subscriber1.Unsubscribe();
weatherStation.MeasurementsChanged(15, 750, 78);
subscriber2.Unsubscribe();
weatherStation.MeasurementsChanged(14, 745, 90);
subscriber1.Subscribe(weatherStation);
subscriber2.Subscribe(weatherStation);
weatherStation.MeasurementsChanged(13, 740, 99);
weatherStation.MeasurementStopped();
}
