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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // This file contains utility functions for locale change.
      6 
      7 #ifndef CHROME_BROWSER_CHROMEOS_BASE_LOCALE_UTIL_H_
      8 #define CHROME_BROWSER_CHROMEOS_BASE_LOCALE_UTIL_H_
      9 
     10 #include <string>
     11 
     12 #include "base/memory/scoped_ptr.h"
     13 
     14 namespace base {
     15 
     16 template <typename T>
     17 class Callback;
     18 
     19 }  // namespace base
     20 
     21 namespace chromeos {
     22 namespace locale_util {
     23 
     24 // This callback is called on UI thread, when ReloadLocaleResources() is
     25 // completed on BlockingPool.
     26 // Arguments:
     27 //   locale - (copy of) locale argument to SwitchLanguage(). Expected locale.
     28 //   loaded_locale - actual locale name loaded.
     29 //   success - if locale load succeeded.
     30 // (const std::string* locale, const std::string* loaded_locale, bool success)
     31 typedef base::Callback<void(const std::string&, const std::string&, bool)>
     32     SwitchLanguageCallback;
     33 
     34 // This function updates input methods only if requested. In general, you want
     35 // |enable_locale_keyboard_layouts = true|.
     36 // Note: in case of |enable_locale_keyboard_layouts = false|, the input method
     37 // currently in use may not be supported by the new locale. Using the new locale
     38 // with an unsupported input method may lead to undefined behavior. Use
     39 // |enable_locale_keyboard_layouts = false| with caution.
     40 // Note 2: |login_layouts_only = true| enables only login-capable layouts.
     41 void SwitchLanguage(const std::string& locale,
     42                     const bool enable_locale_keyboard_layouts,
     43                     const bool login_layouts_only,
     44                     scoped_ptr<SwitchLanguageCallback> callback);
     45 
     46 }  // namespace locale_util
     47 }  // namespace chromeos
     48 
     49 #endif  // CHROME_BROWSER_CHROMEOS_BASE_LOCALE_UTIL_H_
     50