add undo to MoveSelectedNodes (do TODO)

Source/Editor/Surface/SurfaceUtils.cs

@@ -573,13 +573,13 @@ namespace FlaxEditor.Surface
             var showSearch = () => editor.ContentFinding.ShowSearch(window);
 
             // Toolstrip
-            saveButton = toolStrip.AddButton(editor.Icons.Save64, window.Save).LinkTooltip("Save", ref inputOptions.Save);
+            saveButton = toolStrip.AddButton(editor.Icons.Save64, window.Save).LinkTooltip("Save.", ref inputOptions.Save);
             toolStrip.AddSeparator();
-            undoButton = toolStrip.AddButton(editor.Icons.Undo64, undo.PerformUndo).LinkTooltip("Undo", ref inputOptions.Undo);
-            redoButton = toolStrip.AddButton(editor.Icons.Redo64, undo.PerformRedo).LinkTooltip("Redo", ref inputOptions.Redo);
+            undoButton = toolStrip.AddButton(editor.Icons.Undo64, undo.PerformUndo).LinkTooltip("Undo.", ref inputOptions.Undo);
+            redoButton = toolStrip.AddButton(editor.Icons.Redo64, undo.PerformRedo).LinkTooltip("Redo.", ref inputOptions.Redo);
             toolStrip.AddSeparator();
-            toolStrip.AddButton(editor.Icons.Search64, showSearch).LinkTooltip("Open content search tool",  ref inputOptions.Search);
-            toolStrip.AddButton(editor.Icons.CenterView64, surface.ShowWholeGraph).LinkTooltip("Show whole graph");
+            toolStrip.AddButton(editor.Icons.Search64, showSearch).LinkTooltip("Open content search tool.",  ref inputOptions.Search);
+            toolStrip.AddButton(editor.Icons.CenterView64, surface.ShowWholeGraph).LinkTooltip("Show whole graph.");
             var gridSnapButton = toolStrip.AddButton(editor.Icons.Grid32, surface.ToggleGridSnapping);
             gridSnapButton.LinkTooltip("Toggle grid snapping for nodes.");
             gridSnapButton.AutoCheck = true;

Source/Editor/Surface/VisjectSurface.Input.cs

@@ -702,13 +702,21 @@ namespace FlaxEditor.Surface
 
         private void MoveSelectedNodes(Float2 delta)
         {
-            // TODO: undo
+            List<MoveNodesAction> undoActions = new List<MoveNodesAction>();
+
             delta /= _targetScale;
             OnGetNodesToMove();
             foreach (var node in _movingNodes)
+            {
                 node.Location += delta;
+                if (Undo != null)
+                    undoActions.Add(new MoveNodesAction(Context, new[] { node.ID }, delta));
+            }
             _isMovingSelection = false;
             MarkAsEdited(false);
+
+            if (undoActions.Count > 0)
+                Undo?.AddAction(new MultiUndoAction(undoActions, "Moved "));
         }
 
         /// <inheritdoc />

Source/Editor/Windows/Assets/AssetEditorWindow.cs

@@ -53,7 +53,7 @@ namespace FlaxEditor.Windows.Assets
             {
                 Parent = this
             };
-            _toolstrip.AddButton(editor.Icons.Search64, () => Editor.Windows.ContentWin.Select(_item)).LinkTooltip("Show and select in Content Window");
+            _toolstrip.AddButton(editor.Icons.Search64, () => Editor.Windows.ContentWin.Select(_item)).LinkTooltip("Show and select in Content Window.");
 
             InputActions.Add(options => options.Save, Save);