Unity Project

reference
https://cardgames.io/yahtzee/

Library/PackageCache/com.unity.textmeshpro@2.0.1/Scripts/Runtime/TMP_EditorResourceManager.cs

@@ -0,0 +1,142 @@
+#if UNITY_EDITOR
+
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEditor;
+
+
+namespace TMPro
+{
+    public class TMP_EditorResourceManager
+    {
+        private static TMP_EditorResourceManager s_Instance;
+
+        private readonly List<Object> m_ObjectUpdateQueue = new List<Object>();
+        private Dictionary<int, int> m_ObjectUpdateQueueLookup = new Dictionary<int, int>();
+
+        private readonly List<Object> m_ObjectReImportQueue = new List<Object>();
+        private Dictionary<int, int> m_ObjectReImportQueueLookup = new Dictionary<int, int>();
+
+        /// <summary>
+        /// Get a singleton instance of the manager.
+        /// </summary>
+        public static TMP_EditorResourceManager instance
+        {
+            get
+            {
+                if (s_Instance == null)
+                    s_Instance = new TMP_EditorResourceManager();
+
+                return s_Instance;
+            }
+        }
+
+        /// <summary>
+        /// Register to receive rendering callbacks.
+        /// </summary>
+        private TMP_EditorResourceManager()
+        {
+            Camera.onPostRender += OnCameraPostRender;
+        }
+
+
+        void OnCameraPostRender(Camera cam)
+        {
+            // Exclude the PreRenderCamera
+            if (cam.cameraType == CameraType.Preview)
+                return;
+
+            DoUpdates();
+        }
+
+        /// <summary>
+        /// Register resource for re-import.
+        /// </summary>
+        /// <param name="obj"></param>
+        internal static void RegisterResourceForReimport(Object obj)
+        {
+            instance.InternalRegisterResourceForReimport(obj);
+        }
+
+        private void InternalRegisterResourceForReimport(Object obj)
+        {
+            int id = obj.GetInstanceID();
+
+            if (m_ObjectReImportQueueLookup.ContainsKey(id))
+                return;
+
+            m_ObjectReImportQueueLookup[id] = id;
+            m_ObjectReImportQueue.Add(obj);
+
+            return;
+        }
+
+        /// <summary>
+        /// Register resource to be updated.
+        /// </summary>
+        /// <param name="textObject"></param>
+        internal static void RegisterResourceForUpdate(Object obj)
+        {
+            instance.InternalRegisterResourceForUpdate(obj);
+        }
+
+        private void InternalRegisterResourceForUpdate(Object obj)
+        {
+            int id = obj.GetInstanceID();
+
+            if (m_ObjectUpdateQueueLookup.ContainsKey(id))
+                return;
+
+            m_ObjectUpdateQueueLookup[id] = id;
+            m_ObjectUpdateQueue.Add(obj);
+
+            return;
+        }
+
+
+        void DoUpdates()
+        {
+            // Handle objects that need updating
+            int objUpdateCount = m_ObjectUpdateQueue.Count;
+
+            for (int i = 0; i < objUpdateCount; i++)
+            {
+                Object obj = m_ObjectUpdateQueue[i];
+                if (obj != null)
+                {
+                    EditorUtility.SetDirty(obj);
+                }
+            }
+
+            if (objUpdateCount > 0)
+            {
+                //Debug.Log("Saving assets");
+                //AssetDatabase.SaveAssets();
+
+                m_ObjectUpdateQueue.Clear();
+                m_ObjectUpdateQueueLookup.Clear();
+            }
+
+            // Handle objects that need re-importing
+            int objReImportCount = m_ObjectReImportQueue.Count;
+
+            for (int i = 0; i < objReImportCount; i++)
+            {
+                Object obj = m_ObjectReImportQueue[i];
+                if (obj != null)
+                {
+                    //Debug.Log("Re-importing [" + obj.name + "]");
+                    AssetDatabase.ImportAsset(AssetDatabase.GetAssetPath(obj));
+                }
+            }
+
+            if (objReImportCount > 0)
+            {
+                m_ObjectReImportQueue.Clear();
+                m_ObjectReImportQueueLookup.Clear();
+            }
+        }
+
+    }
+}
+#endif