private void OnDestroy()
 {
     if (ECSConfig.IsModfy())
     {
         if (EditorUtility.DisplayDialog("提示", "ECS有未保存的修改,是否保存?", "保存", "放弃"))
         {
             ECSConfig.SaveToFile();
         }
         else
         {
             ECSConfig.ReloadFormFile();
         }
     }
     //Undo.ClearUndo(ECSConfig.Instance);
 }
 void OnGUI()
 {
     for (int i = 0; i < ECSConfig.Instance.Contexts.Count; ++i)
     {
         var context = ECSConfig.Instance.Contexts[i];
         using (new EditorGUILayout.VerticalScope("Box"))
         {
             using (new EditorGUILayout.HorizontalScope())
             {
                 GUILayout.Label(context.Name);
                 GUILayout.FlexibleSpace();
                 if (GUILayout.Button("移除"))
                 {
                     ECSConfig.MakeModify("remove context");
                     ECSConfig.Instance.Contexts.RemoveAt(i);
                     --i;
                     continue;
                 }
             }
             using (new EditorGUILayout.HorizontalScope())
             {
                 if (!string.IsNullOrEmpty(context.UpLevelContext))
                 {
                     GUILayout.Label("上层Context: ");
                     GUILayout.Label(context.UpLevelContext);
                 }
                 if (GUILayout.Button("选择上层Context"))
                 {
                     var names = ECSConfig.Instance.Contexts.Where(it => it.Name != context.Name && context.Name != it.UpLevelContext).Select(it => it.Name).ToArray();
                     if (names.Length > 0)
                     {
                         GenericMenu generic = new GenericMenu();
                         foreach (var name in names)
                         {
                             generic.AddItem(new GUIContent(name), name == context.UpLevelContext, () =>
                             {
                                 ECSConfig.MakeModify("set up level context");
                                 context.UpLevelContext = name;
                             });
                         }
                         generic.ShowAsContext();
                     }
                 }
             }
             GUILayout.Space(5);
             if (GUILayout.Button(context.DirectoryPath, EditorStyles.linkLabel))
             {
                 string selectPath = context.DirectoryPath;
                 if (selectPath.EndsWith("/"))
                 {
                     selectPath = selectPath.Substring(0, selectPath.Length - 1);
                 }
                 var obj = AssetDatabase.LoadMainAssetAtPath(selectPath);
                 EditorGUIUtility.PingObject(obj);
                 Selection.activeObject = obj;
             }
             if (GUILayout.Button("重新生成ECS文件"))
             {
                 context.GenECSFile(true);
             }
         }
         GUILayout.Space(10);
     }
     DrawCreate();
     DrawAddExits();
     if (ECSConfig.IsModfy() && GUILayout.Button("保存"))
     {
         ECSConfig.SaveToFile();
     }
 }