forked from mirrors/gecko-dev
112 lines
2.7 KiB
C++
112 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "LocaleService.h"
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#include "jsapi.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "mozilla/Services.h"
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#include "nsIObserverService.h"
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#include "nsIToolkitChromeRegistry.h"
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using namespace mozilla::intl;
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NS_IMPL_ISUPPORTS(LocaleService, mozILocaleService)
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mozilla::StaticRefPtr<LocaleService> LocaleService::sInstance;
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/**
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* This function performs the actual language negotiation for the API.
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*
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* Currently it collects the locale ID used by nsChromeRegistry and
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* adds hardcoded "en-US" locale as a fallback.
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*/
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static void
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ReadAppLocales(nsTArray<nsCString>& aRetVal)
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{
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nsAutoCString uaLangTag;
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nsCOMPtr<nsIToolkitChromeRegistry> cr =
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mozilla::services::GetToolkitChromeRegistryService();
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if (cr) {
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cr->GetSelectedLocale(NS_LITERAL_CSTRING("global"), true, uaLangTag);
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}
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if (!uaLangTag.IsEmpty()) {
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aRetVal.AppendElement(uaLangTag);
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}
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if (!uaLangTag.EqualsLiteral("en-US")) {
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aRetVal.AppendElement(NS_LITERAL_CSTRING("en-US"));
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}
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}
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LocaleService*
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LocaleService::GetInstance()
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{
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if (!sInstance) {
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sInstance = new LocaleService();
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ClearOnShutdown(&sInstance);
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}
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return sInstance;
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}
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void
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LocaleService::GetAppLocales(nsTArray<nsCString>& aRetVal)
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{
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if (mAppLocales.IsEmpty()) {
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ReadAppLocales(mAppLocales);
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}
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aRetVal = mAppLocales;
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}
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void
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LocaleService::Refresh()
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{
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nsTArray<nsCString> newLocales;
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ReadAppLocales(newLocales);
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if (mAppLocales != newLocales) {
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mAppLocales = Move(newLocales);
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nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
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if (obs) {
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obs->NotifyObservers(nullptr, "intl:app-locales-changed", nullptr);
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}
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}
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}
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/**
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* mozILocaleService methods
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*/
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NS_IMETHODIMP
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LocaleService::GetAppLocales(JSContext* aCtx, JS::MutableHandleValue aRetVal)
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{
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if (mAppLocales.IsEmpty()) {
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ReadAppLocales(mAppLocales);
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}
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uint32_t appLocalesNum = mAppLocales.Length();
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JS::RootedObject locales(aCtx, JS_NewArrayObject(aCtx, appLocalesNum));
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JS::Rooted<JS::Value> value(aCtx);
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for (size_t i = 0; i < appLocalesNum; i++) {
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const nsCString& loc = mAppLocales[i];
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JSString* str = JS_NewStringCopyN(aCtx, loc.get(), loc.Length());
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value.setString(str);
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JS_DefineElement(aCtx, locales, i, value, JSPROP_ENUMERATE);
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}
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aRetVal.setObject(*locales);
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return NS_OK;
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}
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NS_IMETHODIMP
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LocaleService::GetAppLocale(nsACString& aRetVal)
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{
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if (mAppLocales.IsEmpty()) {
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ReadAppLocales(mAppLocales);
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}
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aRetVal = mAppLocales[0];
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return NS_OK;
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}
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