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// Copyright (c) 2012 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_CHROMEOS_LOCALE_CHANGE_GUARD_H_
#define CHROME_BROWSER_CHROMEOS_LOCALE_CHANGE_GUARD_H_
#include <stddef.h>
#include <string>
#include "ash/system/locale/locale_observer.h"
#include "base/compiler_specific.h"
#include "base/gtest_prod_util.h"
#include "base/lazy_instance.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/strings/string16.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "content/public/browser/notification_types.h"
class Profile;
namespace base {
class ListValue;
}
namespace chromeos {
// Performs check whether locale has been changed automatically recently
// (based on synchronized user preference). If so: shows notification that
// allows user to revert change.
class LocaleChangeGuard : public content::NotificationObserver,
public ash::LocaleObserver::Delegate,
public base::SupportsWeakPtr<LocaleChangeGuard> {
public:
explicit LocaleChangeGuard(Profile* profile);
~LocaleChangeGuard() override;
// ash::LocaleChangeDelegate implementation.
void AcceptLocaleChange() override;
void RevertLocaleChange() override;
// Called just before changing locale.
void PrepareChangingLocale(
const std::string& from_locale, const std::string& to_locale);
// Called after login.
void OnLogin();
private:
FRIEND_TEST_ALL_PREFIXES(LocaleChangeGuardTest,
ShowNotificationLocaleChanged);
FRIEND_TEST_ALL_PREFIXES(LocaleChangeGuardTest,
ShowNotificationLocaleChangedList);
void RevertLocaleChangeCallback(const base::ListValue* list);
void Check();
// content::NotificationObserver implementation.
void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) override;
// Returns true if we should notify user about automatic locale change.
static bool ShouldShowLocaleChangeNotification(const std::string& from_locale,
const std::string& to_locale);
static const char* const* GetSkipShowNotificationLanguagesForTesting();
static size_t GetSkipShowNotificationLanguagesSizeForTesting();
std::string from_locale_;
std::string to_locale_;
Profile* profile_;
bool reverted_;
bool session_started_;
bool main_frame_loaded_;
content::NotificationRegistrar registrar_;
// We want to show locale change notification in previous language however
// we cannot directly load strings for non-current locale. So we cache
// messages before locale change.
base::string16 title_text_;
base::string16 message_text_;
base::string16 revert_link_text_;
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_LOCALE_CHANGE_GUARD_H_
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