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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/webui/ash/settings/pages/a11y/tts_handler.h"
#include "ash/webui/settings/public/constants/routes.mojom.h"
#include "base/functional/bind.h"
#include "base/i18n/rtl.h"
#include "base/json/json_reader.h"
#include "base/values.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/speech/extension_api/tts_engine_extension_api.h"
#include "chrome/browser/speech/extension_api/tts_engine_extension_observer_chromeos.h"
#include "chrome/browser/speech/extension_api/tts_engine_extension_observer_chromeos_factory.h"
#include "chrome/browser/ui/chrome_pages.h"
#include "chrome/common/extensions/extension_constants.h"
#include "chrome/grit/generated_resources.h"
#include "content/public/browser/tts_controller.h"
#include "content/public/browser/web_ui.h"
#include "extensions/browser/event_router.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/process_manager.h"
#include "extensions/common/extension.h"
#include "extensions/common/extension_set.h"
#include "extensions/common/manifest_handlers/options_page_info.h"
#include "ui/base/l10n/l10n_util.h"
namespace ash::settings {
TtsHandler::TtsHandler() = default;
TtsHandler::~TtsHandler() = default;
void TtsHandler::HandleGetTtsExtensions(const base::Value::List& args) {
// Ensure the built in tts engine is loaded to be able to respond to messages.
WakeTtsEngine(base::Value::List());
base::Value::List responses;
Profile* profile = Profile::FromWebUI(web_ui());
extensions::ExtensionRegistry* registry =
extensions::ExtensionRegistry::Get(profile);
const std::set<std::string> extensions =
TtsEngineExtensionObserverChromeOSFactory::GetForProfile(profile)
->engine_extension_ids();
std::set<std::string>::const_iterator iter;
for (iter = extensions.begin(); iter != extensions.end(); ++iter) {
const std::string extension_id = *iter;
const extensions::Extension* extension =
registry->GetInstalledExtension(extension_id);
if (!extension) {
// The extension is still loading from OnVoicesChange call to
// TtsController::GetVoices(). Don't do any work, voices will
// be updated again after extension load.
continue;
}
base::Value::Dict response;
response.Set("name", extension->name());
response.Set("extensionId", extension_id);
if (extensions::OptionsPageInfo::HasOptionsPage(extension)) {
response.Set(
"optionsPage",
extensions::OptionsPageInfo::GetOptionsPage(extension).spec());
}
responses.Append(std::move(response));
}
FireWebUIListener("tts-extensions-updated", responses);
}
void TtsHandler::HandleGetDisplayNameForLocale(const base::Value::List& args) {
CHECK_EQ(2U, args.size());
const std::string callback_id = args[0].GetString();
const std::string locale = args[1].GetString();
const std::u16string display_name = l10n_util::GetDisplayNameForLocale(
locale, g_browser_process->GetApplicationLocale(), true);
AllowJavascript();
ResolveJavascriptCallback(callback_id, base::UTF16ToUTF8(display_name));
}
void TtsHandler::HandleGetApplicationLocale(const base::Value::List& args) {
CHECK_EQ(1U, args.size());
const std::string callback_id = args[0].GetString();
const std::string& application_locale =
g_browser_process->GetApplicationLocale();
AllowJavascript();
ResolveJavascriptCallback(callback_id, application_locale);
}
void TtsHandler::OnVoicesChanged() {
content::TtsController* tts_controller =
content::TtsController::GetInstance();
std::vector<content::VoiceData> voices;
tts_controller->GetVoices(Profile::FromWebUI(web_ui()), GURL(), &voices);
const std::string& app_locale = g_browser_process->GetApplicationLocale();
base::Value::List responses;
for (const auto& voice : voices) {
base::Value::Dict response;
int language_score = GetVoiceLangMatchScore(&voice, app_locale);
std::string language_code;
if (voice.lang.empty()) {
language_code = "noLanguageCode";
response.Set(
"displayLanguage",
l10n_util::GetStringUTF8(IDS_TEXT_TO_SPEECH_SETTINGS_NO_LANGUAGE));
} else {
language_code = l10n_util::GetLanguage(voice.lang);
response.Set(
"displayLanguage",
l10n_util::GetDisplayNameForLocale(
language_code, g_browser_process->GetApplicationLocale(), true));
}
response.Set("name", voice.name);
response.Set("remote", voice.remote);
response.Set("languageCode", language_code);
response.Set("fullLanguageCode", voice.lang);
response.Set("languageScore", language_score);
response.Set("extensionId", voice.engine_id);
response.Set("displayName", voice.name);
responses.Append(std::move(response));
}
AllowJavascript();
FireWebUIListener("all-voice-data-updated", responses);
// Also refresh the TTS extensions in case they have changed.
HandleGetTtsExtensions(base::Value::List());
}
void TtsHandler::RegisterMessages() {
SettingsWithTtsPreviewHandler::RegisterMessages();
web_ui()->RegisterMessageCallback(
"getTtsExtensions",
base::BindRepeating(&TtsHandler::HandleGetTtsExtensions,
base::Unretained(this)));
web_ui()->RegisterMessageCallback(
"getDisplayNameForLocale",
base::BindRepeating(&TtsHandler::HandleGetDisplayNameForLocale,
base::Unretained(this)));
web_ui()->RegisterMessageCallback(
"getApplicationLocale",
base::BindRepeating(&TtsHandler::HandleGetApplicationLocale,
base::Unretained(this)));
web_ui()->RegisterMessageCallback(
"previewTtsVoice",
base::BindRepeating(&SettingsWithTtsPreviewHandler::HandlePreviewTtsVoice,
base::Unretained(this)));
web_ui()->RegisterMessageCallback(
"wakeTtsEngine",
base::BindRepeating(&TtsHandler::WakeTtsEngine, base::Unretained(this)));
}
int TtsHandler::GetVoiceLangMatchScore(const content::VoiceData* voice,
const std::string& app_locale) {
if (voice->lang.empty() || app_locale.empty()) {
return 0;
}
if (voice->lang == app_locale) {
return 2;
}
return l10n_util::GetLanguage(voice->lang) ==
l10n_util::GetLanguage(app_locale)
? 1
: 0;
}
void TtsHandler::WakeTtsEngine(const base::Value::List& args) {
Profile* profile = Profile::FromWebUI(web_ui());
TtsExtensionEngine::GetInstance()->LoadBuiltInTtsEngine(profile);
extensions::ProcessManager::Get(profile)->WakeEventPage(
extension_misc::kGoogleSpeechSynthesisExtensionId,
base::BindOnce(&TtsHandler::OnTtsEngineAwake,
weak_factory_.GetWeakPtr()));
}
void TtsHandler::OnTtsEngineAwake(bool success) {
OnVoicesChanged();
}
GURL TtsHandler::GetSourceURL() const {
return GURL(chrome::GetOSSettingsUrl(
chromeos::settings::mojom::kTextToSpeechSubpagePath));
}
} // namespace ash::settings
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