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// Copyright 2018 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_TTS_HANDLER_H_
#define CHROME_BROWSER_UI_WEBUI_SETTINGS_TTS_HANDLER_H_
#include "base/memory/weak_ptr.h"
#include "chrome/browser/ui/webui/settings/settings_page_ui_handler.h"
#include "content/public/browser/tts_controller.h"
class Profile;
namespace settings {
// Chrome "/manageAccessibility/tts/*" settings page UI handler.
class TtsHandler : public SettingsPageUIHandler,
public content::VoicesChangedDelegate,
public content::UtteranceEventDelegate {
public:
TtsHandler();
~TtsHandler() override;
void HandleGetAllTtsVoiceData(const base::ListValue* args);
void HandleGetTtsExtensions(const base::ListValue* args);
void HandlePreviewTtsVoice(const base::ListValue* args);
// SettingsPageUIHandler implementation.
void RegisterMessages() override;
void OnJavascriptAllowed() override;
void OnJavascriptDisallowed() override;
// VoicesChangedDelegate implementation.
void OnVoicesChanged() override;
// UtteranceEventDelegate implementation.
void OnTtsEvent(content::TtsUtterance* utterance,
content::TtsEventType event_type,
int char_index,
int length,
const std::string& error_message) override;
private:
void WakeTtsEngine(const base::ListValue* args);
void OnTtsEngineAwake(bool success);
int GetVoiceLangMatchScore(const content::VoiceData* voice,
const std::string& app_locale);
void RemoveTtsControllerDelegates();
base::WeakPtrFactory<TtsHandler> weak_factory_{this};
DISALLOW_COPY_AND_ASSIGN(TtsHandler);
};
} // namespace settings
#endif // CHROME_BROWSER_UI_WEBUI_SETTINGS_TTS_HANDLER_H_