Upstream ios/web_view source code.

ios/web_view/internal/translate/criwv_translate_accept_languages_factory.cc

+// Copyright 2014 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.
+
+#include "ios/web_view/internal/translate/criwv_translate_accept_languages_factory.h"
+
+#include "base/memory/ptr_util.h"
+#include "base/memory/singleton.h"
+#include "components/keyed_service/core/keyed_service.h"
+#include "components/keyed_service/ios/browser_state_dependency_manager.h"
+#include "components/prefs/pref_service.h"
+#include "components/translate/core/browser/translate_accept_languages.h"
+#include "ios/web_view/internal/criwv_browser_state.h"
+#include "ios/web_view/internal/pref_names.h"
+
+namespace {
+
+// TranslateAcceptLanguagesService is a thin container for
+// TranslateAcceptLanguages to enable associating it with a BrowserState.
+class TranslateAcceptLanguagesService : public KeyedService {
+ public:
+  explicit TranslateAcceptLanguagesService(PrefService* prefs);
+  ~TranslateAcceptLanguagesService() override;
+
+  // Returns the associated TranslateAcceptLanguages.
+  translate::TranslateAcceptLanguages& accept_languages() {
+    return accept_languages_;
+  }
+
+ private:
+  translate::TranslateAcceptLanguages accept_languages_;
+
+  DISALLOW_COPY_AND_ASSIGN(TranslateAcceptLanguagesService);
+};
+
+TranslateAcceptLanguagesService::TranslateAcceptLanguagesService(
+    PrefService* prefs)
+    : accept_languages_(prefs, prefs::kAcceptLanguages) {}
+
+TranslateAcceptLanguagesService::~TranslateAcceptLanguagesService() {}
+
+}  // namespace
+
+namespace ios_web_view {
+
+// static
+CRIWVTranslateAcceptLanguagesFactory*
+CRIWVTranslateAcceptLanguagesFactory::GetInstance() {
+  return base::Singleton<CRIWVTranslateAcceptLanguagesFactory>::get();
+}
+
+// static
+translate::TranslateAcceptLanguages*
+CRIWVTranslateAcceptLanguagesFactory::GetForBrowserState(
+    CRIWVBrowserState* state) {
+  TranslateAcceptLanguagesService* service =
+      static_cast<TranslateAcceptLanguagesService*>(
+          GetInstance()->GetServiceForBrowserState(state, true));
+  return &service->accept_languages();
+}
+
+CRIWVTranslateAcceptLanguagesFactory::CRIWVTranslateAcceptLanguagesFactory()
+    : BrowserStateKeyedServiceFactory(
+          "TranslateAcceptLanguagesService",
+          BrowserStateDependencyManager::GetInstance()) {}
+
+CRIWVTranslateAcceptLanguagesFactory::~CRIWVTranslateAcceptLanguagesFactory() {}
+
+std::unique_ptr<KeyedService>
+CRIWVTranslateAcceptLanguagesFactory::BuildServiceInstanceFor(
+    web::BrowserState* context) const {
+  CRIWVBrowserState* criwv_browser_state =
+      CRIWVBrowserState::FromBrowserState(context);
+  return base::MakeUnique<TranslateAcceptLanguagesService>(
+      criwv_browser_state->GetPrefs());
+}
+
+}  // namespace ios_web_view