private void OnEnable()
{
_editor = this;
FolderManager.Initialize();
FolderManager.ClientRepaints -= Repaint;
FolderManager.ClientRepaints += Repaint;
SceneView.onSceneGUIDelegate -= OnSceneGUI;
SceneView.onSceneGUIDelegate += OnSceneGUI;
FolderManagerCallbacks.OnAddElement -= ElementAdded;
FolderManagerCallbacks.OnAddElement += ElementAdded;
FolderManagerCallbacks.OnDeleteElement -= ElementAdded;
FolderManagerCallbacks.OnDeleteElement += ElementAdded;
Cache = new FolderTreeCache(DirectoryUtility.GetDirectoryName(AssetDatabase.GetAssetPath(MonoScript.FromScriptableObject(this))));
Cache.SetupCacheEvents();
}