Added RelayNodeView;

Chnaged GraphView to multiple files for better organization;

Editor/Views/Nodes/PropertyInputNodeView.cs

@@ -1,7 +1,4 @@
-using System;
-using System.Collections.Generic;
-using NUnit.Framework;
-using UnityEditor.Experimental.GraphView;
+using UnityEditor.Experimental.GraphView;
 using UnityEngine;
 using UnityEngine.UIElements;
 
@@ -9,54 +6,49 @@ namespace Misaki.GraphView.Editor
 {
     public class PropertyInputNodeView : TokenNode, IPortContainer
     {
-        private readonly List<Port> _outputPorts = new List<Port>();
-        
+        private readonly Port _outputPort;
+
         private readonly PropertyInput _data;
         //private readonly ExposedPropertyEditor _editor;
-        
+
         public PropertyInput Data => _data;
-        
-        public List<Port> InputPorts => null;
-        public List<Port> OutputPorts => _outputPorts;
-        
+
         public PropertyInputNodeView(PropertyInput data, Port output) : base(null, output)
         {
             _data = data;
-            //_editor = editor;
+            _outputPort = output;
 
             name = data.Property.propertyName;
             title = data.Property.propertyName;
             userData = data;
 
             this.Q<VisualElement>("top").style.minHeight = 24;
-            
-            _outputPorts.Add(output);
         }
-        
+
         public static PropertyInputNodeView Create(PropertyInput data, IPortColorManager portColorManager)
         {
             if (data == null)
             {
                 return null;
             }
-            
+
             var outputSlot = data.GetSlot(0, SlotDirection.Output);
             var outputPort = CreateOutputPort(data.Property, outputSlot, portColorManager);
             var nodeView = new PropertyInputNodeView(data, outputPort);
-            
+
             return nodeView;
         }
-        
+
         private static Port CreateOutputPort(ExposedProperty property, Slot slot, IPortColorManager portColorManager)
         {
             if (property == null)
             {
                 return null;
             }
-            
+
             var portType = property.GetValueType();
             var port = Port.Create<Edge>(Orientation.Horizontal, Direction.Output, Port.Capacity.Single, portType);
-            
+
             port.portName = string.Empty;
             if (portColorManager != null && portColorManager.TryGetColor(portType, out var portColor))
             {
@@ -64,7 +56,7 @@ namespace Misaki.GraphView.Editor
             }
             port.portType = portType;
             port.userData = slot;
-            
+
             return port;
         }
 
@@ -75,5 +67,10 @@ namespace Misaki.GraphView.Editor
             base.SetPosition(newPos);
             _data.position = newPos;
         }
+
+        public Port GetPort(int index, Direction direction)
+        {
+            return _outputPort;
+        }
     }
 }