Added Disposer

Framework/Foundation/Foundation.csproj

@@ -15,6 +15,7 @@
     <PackageReference Include="Microsoft.Extensions.Hosting" Version="7.0.0" />
     <PackageReference Include="Microsoft.Extensions.Options" Version="7.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
+    <PackageReference Include="System.Reactive" Version="5.0.0" />
   </ItemGroup>
 
 </Project>

Framework/Foundation/Lifecycles/Disposer.cs

@@ -0,0 +1,46 @@
+using System.Runtime.CompilerServices;
+using System.Reactive.Disposables;
+
+namespace Toolkit.Framework.Foundation;
+
+public class Disposer : IDisposer
+{
+    private readonly ConditionalWeakTable<object, CompositeDisposable> subjects = new();
+
+    public void Add(object subject, params object[] objects)
+    {
+        CompositeDisposable disposables = subjects.GetOrCreateValue(subject);
+        foreach (IDisposable disposable in objects.OfType<IDisposable>())
+        {
+            disposables.Add(disposable);
+        }
+    }
+
+    public TDisposable Replace<TDisposable>(object subject, IDisposable disposer, TDisposable replacement) where TDisposable : IDisposable
+    {
+        CompositeDisposable disposables = subjects.GetOrCreateValue(subject);
+        if (disposer is not null)
+        {
+            disposables.Remove(disposer);
+        }
+
+        disposables.Add(replacement);
+        return replacement;
+    }
+    public void Remove(object subject, IDisposable disposer)
+    {
+        CompositeDisposable disposables = subjects.GetOrCreateValue(subject);
+        if (disposer is not null)
+        {
+            disposables.Remove(disposer);
+        }
+    }
+
+    public void Dispose(object subject)
+    {
+        if (subjects.TryGetValue(subject, out CompositeDisposable disposables))
+        {
+            disposables.Dispose();
+        }
+    }
+}

Framework/Foundation/Lifecycles/IDisposer.cs

@@ -0,0 +1,10 @@
+namespace Toolkit.Framework.Foundation;
+
+public interface IDisposer
+{
+    void Add(object subject, params object[] objects);
+
+    void Remove(object subject, IDisposable disposer);
+
+    void Dispose(object subject);
+}

Framework/Foundation/Lifecycles/Mediator.cs

@@ -1,12 +1,13 @@
 using Microsoft.Extensions.DependencyInjection;
-using System.Collections.Concurrent;
+using System.Runtime.CompilerServices;
 
 namespace Toolkit.Framework.Foundation;
 
 public class Mediator : IMediator
 {
     private readonly IServiceProvider factory;
-    private readonly ConcurrentDictionary<Type, HashSet<dynamic>> subscriptions = new();
+
+    private readonly ConditionalWeakTable<Type, dynamic> handlers = new();
 
     public Mediator(IServiceProvider factory)
     {
@@ -17,9 +18,12 @@ public class Mediator : IMediator
     {
         List<INotificationHandler<TNotification>> handlers = factory.GetServices<INotificationHandler<TNotification>>().ToList();
    
-        foreach (dynamic handler in subscriptions[typeof(TNotification)])
+        foreach (KeyValuePair<Type, dynamic> handler in this.handlers)
         {
-            handlers.Add(handler);
+            if (handler.Key == typeof(TNotification))
+            {
+                handlers.Add(handler.Value);
+            }
         }
 
         if (handlers.Count == 0)
@@ -114,9 +118,9 @@ public class Mediator : IMediator
         return default;
     }
 
-    public void Subscribe(object subscriber)
+    public void Subscribe(object subject)
     {
-        Type[] interfaceTypes = subscriber.GetType().GetInterfaces();
+        Type[] interfaceTypes = subject.GetType().GetInterfaces();
         foreach (Type interfaceType in interfaceTypes.Where(x => x.IsGenericType))
         {
             if (interfaceType.GetGenericTypeDefinition() == typeof(INotificationHandler<>))
@@ -124,12 +128,7 @@ public class Mediator : IMediator
                 if (interfaceType.GetGenericArguments() is { Length: 1 } arguments)
                 {
                     Type notificationType = arguments[0];
-
+                    handlers.Add(notificationType, subject);
-                    subscriptions.AddOrUpdate(notificationType, new HashSet<dynamic> { subscriber }, (type, hashSet) =>
-                    {
-                        hashSet.Add(subscriber);
-                        return hashSet;
-                    });
                 }
             }
         }