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| 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 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_CHROMEOS_AUDIO_AUDIO_DEVICES_PREF_HANDLER_IMPL_H_ | 5 #ifndef CHROME_BROWSER_CHROMEOS_AUDIO_AUDIO_DEVICES_PREF_HANDLER_IMPL_H_ | 
| 6 #define CHROME_BROWSER_CHROMEOS_AUDIO_AUDIO_DEVICES_PREF_HANDLER_IMPL_H_ | 6 #define CHROME_BROWSER_CHROMEOS_AUDIO_AUDIO_DEVICES_PREF_HANDLER_IMPL_H_ | 
| 7 | 7 | 
| 8 #include "base/observer_list.h" | 8 #include "base/observer_list.h" | 
| 9 #include "base/prefs/pref_change_registrar.h" | 9 #include "base/prefs/pref_change_registrar.h" | 
| 10 #include "base/values.h" | 10 #include "base/values.h" | 
| 11 #include "chromeos/audio/audio_devices_pref_handler.h" | 11 #include "chromeos/audio/audio_devices_pref_handler.h" | 
| 12 | 12 | 
| 13 class PrefRegistrySimple; | 13 class PrefRegistrySimple; | 
| 14 class PrefService; | 14 class PrefService; | 
| 15 | 15 | 
| 16 namespace chromeos { | 16 namespace chromeos { | 
| 17 | 17 | 
| 18 // Class which implements AudioDevicesPrefHandler interface and register audio | 18 // Class which implements AudioDevicesPrefHandler interface and register audio | 
| 19 // preferences as well. | 19 // preferences as well. | 
| 20 class AudioDevicesPrefHandlerImpl : public AudioDevicesPrefHandler { | 20 class AudioDevicesPrefHandlerImpl : public AudioDevicesPrefHandler { | 
| 21  public: | 21  public: | 
| 22   explicit AudioDevicesPrefHandlerImpl(PrefService* local_state); | 22   explicit AudioDevicesPrefHandlerImpl(PrefService* local_state); | 
| 23 | 23 | 
| 24   // Overridden from AudioDevicesPrefHandler. | 24   // Overridden from AudioDevicesPrefHandler. | 
| 25   virtual double GetOutputVolumeValue(const AudioDevice* device) OVERRIDE; | 25   virtual double GetOutputVolumeValue(const AudioDevice* device) override; | 
| 26   virtual double GetInputGainValue(const AudioDevice* device) OVERRIDE; | 26   virtual double GetInputGainValue(const AudioDevice* device) override; | 
| 27   virtual void SetVolumeGainValue(const AudioDevice& device, | 27   virtual void SetVolumeGainValue(const AudioDevice& device, | 
| 28                                   double value) OVERRIDE; | 28                                   double value) override; | 
| 29 | 29 | 
| 30   virtual bool GetMuteValue(const AudioDevice& device) OVERRIDE; | 30   virtual bool GetMuteValue(const AudioDevice& device) override; | 
| 31   virtual void SetMuteValue(const AudioDevice& device, bool mute_on) OVERRIDE; | 31   virtual void SetMuteValue(const AudioDevice& device, bool mute_on) override; | 
| 32 | 32 | 
| 33   virtual bool GetAudioCaptureAllowedValue() OVERRIDE; | 33   virtual bool GetAudioCaptureAllowedValue() override; | 
| 34   virtual bool GetAudioOutputAllowedValue() OVERRIDE; | 34   virtual bool GetAudioOutputAllowedValue() override; | 
| 35 | 35 | 
| 36   virtual void AddAudioPrefObserver(AudioPrefObserver* observer) OVERRIDE; | 36   virtual void AddAudioPrefObserver(AudioPrefObserver* observer) override; | 
| 37   virtual void RemoveAudioPrefObserver(AudioPrefObserver* observer) OVERRIDE; | 37   virtual void RemoveAudioPrefObserver(AudioPrefObserver* observer) override; | 
| 38 | 38 | 
| 39   // Registers volume and mute preferences. | 39   // Registers volume and mute preferences. | 
| 40   static void RegisterPrefs(PrefRegistrySimple* registry); | 40   static void RegisterPrefs(PrefRegistrySimple* registry); | 
| 41 | 41 | 
| 42  protected: | 42  protected: | 
| 43   virtual ~AudioDevicesPrefHandlerImpl(); | 43   virtual ~AudioDevicesPrefHandlerImpl(); | 
| 44 | 44 | 
| 45  private: | 45  private: | 
| 46   // Initializes the observers for the policy prefs. | 46   // Initializes the observers for the policy prefs. | 
| 47   void InitializePrefObservers(); | 47   void InitializePrefObservers(); | 
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| 73   PrefService* local_state_;  // not owned | 73   PrefService* local_state_;  // not owned | 
| 74   PrefChangeRegistrar pref_change_registrar_; | 74   PrefChangeRegistrar pref_change_registrar_; | 
| 75   ObserverList<AudioPrefObserver> observers_; | 75   ObserverList<AudioPrefObserver> observers_; | 
| 76 | 76 | 
| 77   DISALLOW_COPY_AND_ASSIGN(AudioDevicesPrefHandlerImpl); | 77   DISALLOW_COPY_AND_ASSIGN(AudioDevicesPrefHandlerImpl); | 
| 78 }; | 78 }; | 
| 79 | 79 | 
| 80 }  // namespace chromeos | 80 }  // namespace chromeos | 
| 81 | 81 | 
| 82 #endif  // CHROME_BROWSER_CHROMEOS_AUDIO_AUDIO_DEVICES_PREF_HANDLER_IMPL_H_ | 82 #endif  // CHROME_BROWSER_CHROMEOS_AUDIO_AUDIO_DEVICES_PREF_HANDLER_IMPL_H_ | 
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