--- a/Implab/PromiseActionReaction`1.cs	Tue Jan 30 01:37:17 2018 +0300
+++ b/Implab/PromiseActionReaction`1.cs	Wed Jan 31 11:28:38 2018 +0300
@@ -2,55 +2,90 @@
 using System.Diagnostics;
 
 namespace Implab {
-    class PromiseActionReaction<T> : PromiseReaction<T> {
+    class PromiseActionReaction<T> : IResolvable<T> {
         readonly Deferred m_next;
 
+        readonly IDispatcher m_dispatcher;
+
+        readonly Action<T, Deferred> m_fulfilled;
+
+        readonly Action<Exception, Deferred> m_rejected;
+
         public IPromise Promise {
             get { return m_next.Promise; }
         }
 
-        public PromiseActionReaction(Action<T> fulfilled, Action<Exception> rejected, IDispatcher dispatcher) : base(dispatcher) {
-            m_next = new Deferred(dispatcher);
-            if (fulfilled != null)
-                FulfilHandler = PromiseHandler.Create(fulfilled, m_next);
-
-            if (rejected != null)
-                RejectHandler = PromiseHandler.Create(rejected, m_next);
+        public PromiseActionReaction(Action<T, Deferred> fulfilled, Action<Exception, Deferred> rejected, Deferred next, IDispatcher dispatcher) {
+            m_next = next;
+            m_fulfilled = fulfilled;
+            m_rejected = rejected;
+            m_dispatcher = dispatcher;
         }
 
-        public PromiseActionReaction(Func<T, IPromise> fulfilled, Func<Exception, IPromise> rejected, IDispatcher dispatcher) : base(dispatcher) {
-            m_next = new Deferred(dispatcher);
-            if (fulfilled != null)
-                FulfilHandler = PromiseHandler.Create(fulfilled, m_next);
+        public void Resolve(T result) {
+            if (m_fulfilled != null) {
+                if (m_dispatcher != null)
+                    m_dispatcher.Enqueue(ResolveImpl, result);
+                else
+                    ResolveImpl(result);
+            } else {
+                m_next.Resolve();
+            }
+        }
 
-            if (rejected != null)
-                RejectHandler = PromiseHandler.Create(rejected, m_next);
+        void ResolveImpl (T result) {
+            m_fulfilled(result, m_next);
+        }
+
+        public void Reject(Exception error) {
+            if (m_fulfilled != null) {
+                if (m_dispatcher != null)
+                    m_dispatcher.Enqueue(RejectImpl, error);
+                else
+                    RejectImpl(error);
+            } else {
+                m_next.Reject(error);
+            }
         }
 
-        public PromiseActionReaction(Action<T> fulfilled, Func<Exception, IPromise> rejected, IDispatcher dispatcher) : base(dispatcher) {
-            m_next = new Deferred(dispatcher);
-            if (fulfilled != null)
-                FulfilHandler = PromiseHandler.Create(fulfilled, m_next);
+        void RejectImpl(Exception error) {
+            m_rejected(error, m_next);
+        }
 
-            if (rejected != null)
-                RejectHandler = PromiseHandler.Create(rejected, m_next);
+        public static PromiseActionReaction<T> Create(Action<T> fulfilled, Action<Exception> rejected, IDispatcher dispatcher) {
+            return new PromiseActionReaction<T>(
+                fulfilled != null ? PromiseHandler.Create(fulfilled) : null,
+                rejected != null ? PromiseHandler.Create(rejected) : null,
+                new Deferred(),
+                dispatcher
+            );
         }
 
-        public PromiseActionReaction(Func<T, IPromise> fulfilled, Action<Exception> rejected, IDispatcher dispatcher) : base(dispatcher) {
-            m_next = new Deferred(dispatcher);
-            if (fulfilled != null)
-                FulfilHandler = PromiseHandler.Create(fulfilled, m_next);
-
-            if (rejected != null)
-                RejectHandler = PromiseHandler.Create(rejected, m_next);
+        public static PromiseActionReaction<T> Create(Func<T,IPromise> fulfilled, Action<Exception> rejected, IDispatcher dispatcher) {
+            return new PromiseActionReaction<T>(
+                fulfilled != null ? PromiseHandler.Create(fulfilled) : null,
+                rejected != null ? PromiseHandler.Create(rejected) : null,
+                new Deferred(),
+                dispatcher
+            );
         }
 
-        protected override void DefaultReject(Exception reason) {
-            m_next.Reject(reason);
+        public static PromiseActionReaction<T> Create(Action<T> fulfilled, Func<Exception, IPromise> rejected, IDispatcher dispatcher) {
+            return new PromiseActionReaction<T>(
+                fulfilled != null ? PromiseHandler.Create(fulfilled) : null,
+                rejected != null ? PromiseHandler.Create(rejected) : null,
+                new Deferred(),
+                dispatcher
+            );
         }
 
-        protected override void DefaultResolve(T result) {
-            m_next.Resolve();
+        public static PromiseActionReaction<T> Create(Func<T,IPromise> fulfilled, Func<Exception, IPromise> rejected, IDispatcher dispatcher) {
+            return new PromiseActionReaction<T>(
+                fulfilled != null ? PromiseHandler.Create(fulfilled) : null,
+                rejected != null ? PromiseHandler.Create(rejected) : null,
+                new Deferred(),
+                dispatcher
+            );
         }
     }
 }
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