ash/volume_control_delegate.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 ASH_VOLUME_CONTROL_DELEGATE_H_
   6 #define ASH_VOLUME_CONTROL_DELEGATE_H_
   7
   8 namespace ui {
   9 class Accelerator;
  10 }  // namespace ui
  11
  12 namespace ash {
  13
  14 // Delegate for controlling the volume.
  15 class VolumeControlDelegate {
  16  public:
  17   virtual ~VolumeControlDelegate() {}
  18
  19   virtual bool HandleVolumeMute(const ui::Accelerator& accelerator) = 0;
  20   virtual bool HandleVolumeDown(const ui::Accelerator& accelerator) = 0;
  21   virtual bool HandleVolumeUp(const ui::Accelerator& accelerator) = 0;
  22 };
  23
  24 }  // namespace ash
  25
  26 #endif  // ASH_VOLUME_CONTROL_DELEGATE_H_