Undo and Redo Operations Functional, with some caveats

SpriteMapEditor/SpriteMapModifications/RemoveSprite.cs

@@ -16,6 +16,9 @@ namespace SpriteMapEditor.SpriteMapModifications
 
         private readonly SpriteMapRegion removedSprite;
 
+        private List<int> preChangeSelection;
+        private List<int> postChangeSelection;
+
         public RemoveSprite(BindingList<SpriteMapRegion> spriteList, int indexToRemove)
         {
             allSprites = spriteList;
@@ -32,5 +35,27 @@ namespace SpriteMapEditor.SpriteMapModifications
         {
             allSprites.Insert(index, removedSprite);
         }
+
+        public List<int> GetPreChangeSelection()
+        {
+            return preChangeSelection;
+        }
+        public void SetPreChangeSelection(List<int> currentSelection)
+        {
+            preChangeSelection = currentSelection;
+        }
+        public List<int> GetPostChangeSelection()
+        {
+            return postChangeSelection;
+        }
+        public void SetPostChangeSelection(List<int> currentSelection)
+        {
+            postChangeSelection = currentSelection;
+        }
+
+        public override string ToString()
+        {
+            return "Remove Sprite";
+        }
     }
 }