chrome/browser/command_observer.h

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