ash/system/audio/mic_gain_slider_view.h

// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef ASH_SYSTEM_AUDIO_MIC_GAIN_SLIDER_VIEW_H_
#define ASH_SYSTEM_AUDIO_MIC_GAIN_SLIDER_VIEW_H_

#include "ash/components/audio/cras_audio_handler.h"
#include "ash/system/unified/unified_slider_view.h"
#include "ui/views/controls/label.h"

namespace ash {

class MicGainSliderController;

class MicGainSliderView : public UnifiedSliderView,
                          public CrasAudioHandler::AudioObserver {
 public:
  explicit MicGainSliderView(MicGainSliderController* controller);
  MicGainSliderView(MicGainSliderController* controller,
                    uint64_t device_id,
                    bool internal);
  ~MicGainSliderView() override;

  uint64_t device_id() const { return device_id_; }

  // CrasAudioHandler::AudioObserver:
  void OnInputNodeGainChanged(uint64_t node_id, int gain) override;
  void OnInputMuteChanged(bool mute_on) override;
  void OnInputMutedByMicrophoneMuteSwitchChanged(bool muted) override;
  void OnActiveInputNodeChanged() override;

  // views::View:
  const char* GetClassName() const override;
  void OnThemeChanged() override;

 private:
  void Update(bool by_user);

  views::Label* toast_label_ = nullptr;

  // device id for the input device tied to this slider.
  const uint64_t device_id_;

  // True if the audio device this slider represents is internal.
  const bool internal_;
};

}  // namespace ash

#endif  // ASH_SYSTEM_AUDIO_MIC_GAIN_SLIDER_VIEW_H_