0.2版本，重构代码，增加Editor

Scripts/UI/Internal/JsonDataSupport.cs

@@ -0,0 +1,32 @@
+using UnityEngine;
+using UnityEditor;
+using System;
+
+namespace XCharts
+{
+    public class JsonDataSupport: IJsonData,ISerializationCallbackReceiver
+    {
+        [SerializeField] protected string m_JsonData;
+        [SerializeField] protected bool m_DataFromJson;
+
+        public string jsonData { get { return m_JsonData; } set { m_JsonData = value; ParseJsonData(value); } }
+
+        public void OnAfterDeserialize()
+        {
+            if (m_DataFromJson)
+            {
+                ParseJsonData(m_JsonData);
+                m_DataFromJson = false;
+            }
+        }
+
+        public void OnBeforeSerialize()
+        {
+        }
+
+        public virtual void ParseJsonData(string json)
+        {
+            throw new Exception("no support yet");
+        }
+    }
+}