close #29

UnityProject/Assets/Editor/PdConsole.cs

@@ -1,5 +1,4 @@
 using UnityEditor;
-using UnityEngine;
 
 namespace cylvester
 {
@@ -18,19 +17,34 @@ namespace cylvester
 
         private void OnEnable()
         { 
-            object[] foundObjects  = FindObjectsOfType(typeof(PdBackend));
-            
+            var foundObjects = FindObjectsOfType(typeof(PdBackend));
+            if (foundObjects.Length != 1)
+                return;
 
+            pdBackend_ = (IPdBackend) foundObjects[0];
             dspToggle_ = new EditorToggle();
-           togglePresenter_ = new TogglePresenter(dspToggle_, pdBackend_);
+            
+            togglePresenter_ = new TogglePresenter(dspToggle_, pdBackend_);
         }
 
-        void OnGUI ()
+        private void OnGUI ()
         {
-            foundObjects.
+            if(!ValidatePdBackend(pdBackend_))
+                return;
+            
             dspToggle_.State = EditorGUILayout.Toggle("Pure Data Process", dspToggle_.State);
 
         }
+
+        private bool ValidatePdBackend(IPdBackend pdBackend)
+        {
+            var exist = pdBackend_ != null;
+            if (!exist)
+            {
+                EditorGUILayout.LabelField("No Pd backend found in the scene");
+            }
+            return exist;
+        }
     }
 
 }

UnityProject/Assets/Editor/TogglePresenter.cs

@@ -20,8 +20,7 @@ namespace cylvester
 
             onToggleChanged_ = () =>
             {
-                var state = editorToggle_.State;
-                // apply state to pd backend;
+                pdBackend.State = editorToggle_.State;
             };
 
             editorToggle_.ToggleStateChanged += onToggleChanged_;