cef/libcef/browser/speech_recognition_manager_delegate.h

// Copyright (c) 2012 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 CEF_LIBCEF_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_
#define CEF_LIBCEF_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_

#include "base/memory/ref_counted.h"
#include "content/public/browser/speech_recognition_event_listener.h"
#include "content/public/browser/speech_recognition_manager_delegate.h"

// This is CEF's implementation of the SpeechRecognitionManagerDelegate
// interface. Based on chrome/browser/speech/
// chrome_speech_recognition_manager_delegate.[cc|h]
class CefSpeechRecognitionManagerDelegate
    : public content::SpeechRecognitionManagerDelegate,
      public content::SpeechRecognitionEventListener {
 public:
  CefSpeechRecognitionManagerDelegate();

  CefSpeechRecognitionManagerDelegate(
      const CefSpeechRecognitionManagerDelegate&) = delete;
  CefSpeechRecognitionManagerDelegate& operator=(
      const CefSpeechRecognitionManagerDelegate&) = delete;

  ~CefSpeechRecognitionManagerDelegate() override;

 protected:
  // SpeechRecognitionEventListener methods.
  void OnRecognitionStart(int session_id) override;
  void OnAudioStart(int session_id) override;
  void OnEnvironmentEstimationComplete(int session_id) override;
  void OnSoundStart(int session_id) override;
  void OnSoundEnd(int session_id) override;
  void OnAudioEnd(int session_id) override;
  void OnRecognitionEnd(int session_id) override;
  void OnRecognitionResults(
      int session_id,
      const std::vector<blink::mojom::SpeechRecognitionResultPtr>& result)
      override;
  void OnRecognitionError(
      int session_id,
      const blink::mojom::SpeechRecognitionError& error) override;
  void OnAudioLevelsChange(int session_id,
                           float volume,
                           float noise_volume) override;

  // SpeechRecognitionManagerDelegate methods.
  void CheckRecognitionIsAllowed(
      int session_id,
      base::OnceCallback<void(bool ask_user, bool is_allowed)> callback)
      override;
  content::SpeechRecognitionEventListener* GetEventListener() override;
  bool FilterProfanities(int render_process_id) override;

 private:
  bool filter_profanities_;
};

#endif  // CEF_LIBCEF_BROWSER_SPEECH_RECOGNITION_MANAGER_DELEGATE_H_