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