chrome/browser/ui/webui/settings/captions_handler.h

// Copyright 2019 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 CHROME_BROWSER_UI_WEBUI_SETTINGS_CAPTIONS_HANDLER_H_
#define CHROME_BROWSER_UI_WEBUI_SETTINGS_CAPTIONS_HANDLER_H_

#include "chrome/browser/accessibility/soda_installer.h"
#include "chrome/browser/ui/webui/settings/settings_page_ui_handler.h"

class PrefService;

namespace settings {

// Settings handler for the captions settings subpage.
class CaptionsHandler : public SettingsPageUIHandler,
                        public speech::SODAInstaller::Observer {
 public:
  explicit CaptionsHandler(PrefService* prefs);
  ~CaptionsHandler() override;
  CaptionsHandler(const CaptionsHandler&) = delete;
  CaptionsHandler& operator=(const CaptionsHandler&) = delete;

  // SettingsPageUIHandler overrides.
  void RegisterMessages() override;
  void OnJavascriptAllowed() override;
  void OnJavascriptDisallowed() override;

 private:
  void HandleCaptionsSubpageReady(const base::ListValue* args);
  void HandleOpenSystemCaptionsDialog(const base::ListValue* args);

  // SODAInstaller::Observer overrides:
  void OnSODAInstalled() override;
  void OnSODAError() override;
  void OnSODAProgress(int progress) override;

  PrefService* prefs_;
};

}  // namespace settings

#endif  // CHROME_BROWSER_UI_WEBUI_SETTINGS_CAPTIONS_HANDLER_H_