# undoManager Returns the nearest shared undo manager in the responder chain. ``` var undoManager: UndoManager? { get } ``` ## Discussion By default, every window of an application has an undo manager: a shared object for managing undo and redo operations. However, the class of any object in the responder chain can have their own custom undo manager. (For example, instances of [`UITextField`](/documentation/UIKit/UITextField) have their own undo manager that’s cleared when the text field resigns first-responder status.) When you request an undo manager, the request goes up the responder chain and the [`UIWindow`](/documentation/UIKit/UIWindow) object returns a usable instance. You may add undo managers to your view controllers to perform undo and redo operations local to the managed view. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)