testss

Library/PackageCache/com.unity.2d.sprite@1.0.0/Editor/Interface/IUndoSystem.cs

@@ -0,0 +1,41 @@
+using UnityEngine;
+
+namespace UnityEditor.U2D.Sprites
+{
+    internal interface IUndoSystem
+    {
+        void RegisterUndoCallback(Undo.UndoRedoCallback undoCallback);
+        void UnregisterUndoCallback(Undo.UndoRedoCallback undoCallback);
+        void RegisterCompleteObjectUndo(ScriptableObject obj, string undoText);
+        void ClearUndo(ScriptableObject obj);
+    }
+
+    internal class UndoSystem : IUndoSystem
+    {
+        public void RegisterUndoCallback(Undo.UndoRedoCallback undoCallback)
+        {
+            Undo.undoRedoPerformed += undoCallback;
+        }
+
+        public void UnregisterUndoCallback(Undo.UndoRedoCallback undoCallback)
+        {
+            Undo.undoRedoPerformed -= undoCallback;
+        }
+
+        public void RegisterCompleteObjectUndo(ScriptableObject so, string undoText)
+        {
+            if (so != null)
+            {
+                Undo.RegisterCompleteObjectUndo(so, undoText);
+            }
+        }
+
+        public void ClearUndo(ScriptableObject so)
+        {
+            if (so != null)
+            {
+                Undo.ClearUndo(so);
+            }
+        }
+    }
+}