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| 1 // Copyright (c) 2012 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_COMMAND_OBSERVER_H_ |
| 6 #define CHROME_BROWSER_COMMAND_OBSERVER_H_ |
| 7 #pragma once |
| 8 |
| 9 // An Observer interface implemented by objects that want to be informed when |
| 10 // the state of a particular command ID is modified. See CommandUpdater. |
| 11 class CommandObserver { |
| 12 public: |
| 13 // Notifies the observer that the enabled state has changed for the |
| 14 // specified command id. |
| 15 virtual void EnabledStateChangedForCommand(int id, bool enabled) = 0; |
| 16 |
| 17 protected: |
| 18 virtual ~CommandObserver(); |
| 19 }; |
| 20 |
| 21 #endif // CHROME_BROWSER_COMMAND_OBSERVER_H_ |
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