From f29a1549c5f4b2ee0996884926728e9bde793f81 Mon Sep 17 00:00:00 2001
From: Chikashi Miyama <chikashimiyama@gmail.com>
Date: Sat, 28 Sep 2019 20:29:31 +0200
Subject: [PATCH] close #29

---
 UnityProject/Assets/Editor/PdConsole.cs       | 30 ++++++++++++++-----
 UnityProject/Assets/Editor/TogglePresenter.cs |  3 +-
 2 files changed, 23 insertions(+), 10 deletions(-)

diff --git a/UnityProject/Assets/Editor/PdConsole.cs b/UnityProject/Assets/Editor/PdConsole.cs
index 76ca64e..f4f3272 100644
--- a/UnityProject/Assets/Editor/PdConsole.cs
+++ b/UnityProject/Assets/Editor/PdConsole.cs
@@ -1,5 +1,4 @@
 using UnityEditor;
-using UnityEngine;
 
 namespace cylvester
 {
@@ -17,20 +16,35 @@ 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;
+        }
     }
 
 }
diff --git a/UnityProject/Assets/Editor/TogglePresenter.cs b/UnityProject/Assets/Editor/TogglePresenter.cs
index eba08df..177f9ca 100644
--- a/UnityProject/Assets/Editor/TogglePresenter.cs
+++ b/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_;