资源整理，开始开发

Assets/Packages/Plugins/FindReference2/Editor/Script/FR2_WindowBase.cs

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+using System;
+using System.Collections.Generic;
+using UnityEditor;
+using UnityEngine;
+
+namespace vietlabs.fr2
+{
+    public interface IWindow
+    {
+        bool WillRepaint { get; set; }
+        void Repaint();
+        void OnSelectionChange();
+    }
+
+    internal interface IRefDraw
+    {
+        IWindow window { get; }
+        int ElementCount();
+        bool DrawLayout();
+        bool Draw(Rect rect);
+    }
+
+    public abstract class FR2_WindowBase : EditorWindow, IWindow
+    {
+        public bool WillRepaint { get; set; }
+        protected bool showFilter, showIgnore;
+
+        //[NonSerialized] protected bool lockSelection;
+        //[NonSerialized] internal List<FR2_Asset> Selected;
+
+        public static bool isNoticeIgnore;
+
+        public void AddItemsToMenu(GenericMenu menu)
+        {
+            FR2_Cache api = FR2_Cache.Api;
+            if (api == null)
+            {
+                return;
+            }
+
+            menu.AddDisabledItem(new GUIContent("FR2 - v2.5.2"));
+            menu.AddSeparator(string.Empty);
+
+            menu.AddItem(new GUIContent("Enable"), !api.disabled, () => { api.disabled = !api.disabled; });
+            menu.AddItem(new GUIContent("Refresh"), false, () =>
+            {
+                //FR2_Asset.lastRefreshTS = Time.realtimeSinceStartup;
+				Resources.UnloadUnusedAssets();
+				EditorUtility.UnloadUnusedAssetsImmediate();
+                FR2_Cache.Api.Check4Changes(true);
+                FR2_SceneCache.Api.SetDirty();
+            });
+
+#if FR2_DEV
+            menu.AddItem(new GUIContent("Refresh Usage"), false, () => FR2_Cache.Api.Check4Usage());
+            menu.AddItem(new GUIContent("Refresh Selected"), false, ()=> FR2_Cache.Api.RefreshSelection());
+            menu.AddItem(new GUIContent("Clear Cache"), false, () => FR2_Cache.Api.Clear());
+#endif
+        }
+
+        public abstract void OnSelectionChange();
+        protected abstract void OnGUI();
+
+#if UNITY_2018_OR_NEWER
+        protected void OnSceneChanged(Scene arg0, Scene arg1)
+        {
+            if (IsFocusingFindInScene || IsFocusingSceneToAsset || IsFocusingSceneInScene)
+            {
+                OnSelectionChange();
+            }
+        }
+#endif
+
+        protected bool DrawEnable()
+        {
+            FR2_Cache api = FR2_Cache.Api;
+            if (api == null)
+            {
+                return false;
+            }
+
+            bool v = api.disabled;
+            if (v)
+            {
+                EditorGUILayout.HelpBox("Find References 2 is disabled!", MessageType.Warning);
+
+                if (GUILayout.Button("Enable"))
+                {
+                    api.disabled = !api.disabled;
+                    Repaint();
+                }
+
+                return !api.disabled;
+            }
+
+            return !api.disabled;
+        }
+
+    }
+}