Upstream version 7.36.149.0
[platform/framework/web/crosswalk.git] / src / chrome / browser / undo / undo_manager_observer.h
1 // Copyright 2014 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef CHROME_BROWSER_UNDO_UNDO_MANAGER_OBSERVER_H_
6 #define CHROME_BROWSER_UNDO_UNDO_MANAGER_OBSERVER_H_
7
8 // Observer for the UndoManager.
9 class UndoManagerObserver {
10  public:
11   // Invoked when the internal state of the UndoManager has changed.
12   virtual void OnUndoManagerStateChange() = 0;
13
14  protected:
15   virtual ~UndoManagerObserver() {}
16 };
17
18 #endif  // CHROME_BROWSER_UNDO_UNDO_MANAGER_OBSERVER_H_