Updates to Feedback logic for use in bridge classes, refactored into separate files. Added SerialFeedback class for use with serial stream data that doesn't use Funcs to compute value on update.

Essentials Core/PepperDashEssentialsBase/Feedbacks/SerialFeedback.cs

@@ -0,0 +1,81 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Crestron.SimplSharp;
+using Crestron.SimplSharpPro;
+
+namespace PepperDash.Essentials.Core
+{
+    /// <summary>
+    /// To be used for serial data feedback where the event chain / asynchronicity must be maintained
+    /// and calculating the value based on a Func when it is needed will not suffice.
+    /// </summary>
+    public class SerialFeedback : Feedback
+    {
+        public override string SerialValue { get { return _SerialValue; } } 
+        string _SerialValue;
+
+        public override eCueType Type { get { return eCueType.Serial; } }
+
+        /// <summary>
+        /// Used in testing.  Set/Clear functions
+        /// </summary>
+        public string TestValue { get; private set; }
+
+        List<StringInputSig> LinkedInputSigs = new List<StringInputSig>();
+
+        public SerialFeedback()
+        {
+        }
+
+        public override void FireUpdate()
+        {
+            throw new NotImplementedException("This feedback type does not use Funcs");
+        }
+
+        public void FireUpdate(string newValue)
+        {
+            _SerialValue = newValue;
+            LinkedInputSigs.ForEach(s => UpdateSig(s, newValue));
+            OnOutputChange(newValue);
+        }
+
+        public void LinkInputSig(StringInputSig sig)
+        {
+            LinkedInputSigs.Add(sig);
+            UpdateSig(sig);
+        }
+
+        public void UnlinkInputSig(StringInputSig sig)
+        {
+            LinkedInputSigs.Remove(sig);
+        }
+
+        public override string ToString()
+        {
+            return (InTestMode ? "TEST -- " : "") + SerialValue;
+        }
+
+        /// <summary>
+        /// Puts this in test mode, sets the test value and fires an update.
+        /// </summary>
+        /// <param name="value"></param>
+        public void SetTestValue(string value)
+        {
+            TestValue = value;
+            InTestMode = true;
+            FireUpdate(TestValue);
+        }
+
+        void UpdateSig(StringInputSig sig)
+        {
+            sig.StringValue = _SerialValue;
+        }
+
+        void UpdateSig(StringInputSig sig, string value)
+        {
+            sig.StringValue = value;
+        }
+    }
+}