Update Observer pattern

src/BehavioralPatterns/Program.cs

@@ -16,8 +16,10 @@ namespace BehavioralPatterns
     public class Program
     {
         public static void Main(string[] args)
-        {           
+        {
 
+            ObserverPatternExamples.Run();
+            Console.ReadKey();
             //Chain of responsibillity
             //This is usefull when you have a request and you don't know who should process it
             ChainOfResponsibillityExamples.Run();
@@ -40,10 +42,6 @@ namespace BehavioralPatterns
             Console.ReadKey();
 
             MementoPatternExamples.Run();
-
-
-            ObserverPatternExamples.Run();
-            Console.ReadKey();
         }
     }
 }

src/ObserverPattern/Twits/ObservableTwitsExample.cs

@@ -11,21 +11,16 @@ namespace ObserverPattern.Twits
         {
             TwitObservable observable = new TwitObservable();
 
-            TwitUser t100 = new TwitUser("t100");
-            TwitUser r2d2 = new TwitUser("r2d2");
-            
-            var t100Subscription = observable.Subscribe(t100);
-            var r2d2Subscription = observable.Subscribe(r2d2);
+            TwitUser t100 = new TwitUser("t100", observable);
+            TwitUser r2d2 = new TwitUser("R2-D2", observable);
 
-            observable.AddTwit("El chupacapra");
+            t100.Twit("El chupacapra - BOOM BOOM");
 
-            t100Subscription.Dispose();
+            r2d2.Twit("Vamos vamos mi amor");
 
-            observable.AddTwit("Vamos vamos mi amor");
+            t100.Dispose();
 
-            observable.ItsGoingHomeTime();
-
-            
+            observable.ItsGoingHomeTime();            
         }
     }
 }

src/ObserverPattern/Twits/Twit.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace ObserverPattern.Twits
+{
+    public class Twit
+    {
+        public TwitUser Emiter { get; set; }
+
+        public string Message { get; set; }
+    }
+}

src/ObserverPattern/Twits/TwitObservable.cs

@@ -8,14 +8,14 @@ namespace ObserverPattern.Twits
     /// <summary>
     /// Concrete observable
     /// </summary>
-    public class TwitObservable : IObservable<string>
+    public class TwitObservable : IObservable<Twit>
     {
-        List<IObserver<string>> observers;
+        List<IObserver<Twit>> observers;
         public TwitObservable()
         {
-            observers = new List<IObserver<string>>();
+            observers = new List<IObserver<Twit>>();
         }
-        public IDisposable Subscribe(IObserver<string> observer)
+        public IDisposable Subscribe(IObserver<Twit> observer)
         {
             if (!observers.Contains(observer))
                 observers.Add(observer);
@@ -23,9 +23,9 @@ namespace ObserverPattern.Twits
             return new Unsubscriber(observers, observer);
         }
 
-        public void AddTwit(string twit)
+        public void AddTwit(Twit twit)
         {
-            foreach (var observer in observers)
+            foreach (var observer in observers.Where(o => o != twit.Emiter))
             {
                 observer.OnNext(twit);
             }
@@ -41,10 +41,10 @@ namespace ObserverPattern.Twits
 
         private class Unsubscriber : IDisposable
         {
-            private List<IObserver<string>> _observers;
-            private IObserver<string> _observer;
+            private List<IObserver<Twit>> _observers;
+            private IObserver<Twit> _observer;
 
-            public Unsubscriber(List<IObserver<string>> observers, IObserver<string> observer)
+            public Unsubscriber(List<IObserver<Twit>> observers, IObserver<Twit> observer)
             {
                 _observers = observers;
                 _observer = observer;

src/ObserverPattern/Twits/TwitUser.cs

@@ -8,16 +8,25 @@ namespace ObserverPattern.Twits
     /// <summary>
     /// Concrete observer
     /// </summary>
-    public class TwitUser : IObserver<string>
+    public class TwitUser : IObserver<Twit>, IDisposable
     {
-        string name;
-        public TwitUser(string name)
+        TwitObservable twits;
+        public string Name { get; private set; }
+        IDisposable channel;
+        public TwitUser(string name, TwitObservable twits)
         {
-            this.name = name;
+            this.Name = name;
+            channel = twits.Subscribe(this);
+            this.twits = twits;
+        }
+
+        public void Twit(string twit)
+        {
+            twits.AddTwit(new Twit { Emiter = this, Message = twit });
         }
         public void OnCompleted()
         {
-            Console.WriteLine("{0} finished watching twitter", name);
+            Console.WriteLine("{0} finished watching twitter", Name);
         }
 
         public void OnError(Exception error)
@@ -25,9 +34,14 @@ namespace ObserverPattern.Twits
             Console.WriteLine("Error while watching twitter: {0}", error);
         }
 
-        public void OnNext(string value)
+        public void OnNext(Twit value)
         {
-            Console.WriteLine("{0} just observed that something {1} was tweeted", name, value);
+            Console.WriteLine("{0} just observed that {1} tweeted {2}", Name, value.Emiter.Name, value.Message);
+        }
+
+        public void Dispose()
+        {
+            channel.Dispose();
         }
     }
 }