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: ~VolumeControlDelegate()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_ 27