chrome/browser/chromeos/login/language_list.h

   1 // Copyright (c) 2011 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 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_LANGUAGE_LIST_H_
   6 #define CHROME_BROWSER_CHROMEOS_LOGIN_LANGUAGE_LIST_H_
   7
   8 #include <map>
   9 #include <string>
  10 #include <vector>
  11
  12 #include "base/basictypes.h"
  13 #include "base/strings/string16.h"
  14
  15 namespace chromeos {
  16
  17 // LanguageList is used to enumerate native names corresponding to the
  18 // language code (e.g. English (United States) for en-US).
  19 class LanguageList {
  20  public:
  21   LanguageList();
  22   ~LanguageList();
  23
  24   // Returns the number of locale names.
  25   int languages_count() const { return static_cast<int>(locale_names_.size()); }
  26
  27   // Returns the language for the given |index|.
  28   base::string16 GetLanguageNameAt(int index) const;
  29
  30   // Return the locale for the given |index|. E.g., may return pt-BR.
  31   std::string GetLocaleFromIndex(int index) const;
  32
  33   // Returns the index for the given |locale|. Returns -1 if it's not found.
  34   int GetIndexFromLocale(const std::string& locale) const;
  35
  36   // Duplicates specified languages at the beginning of the list for easier
  37   // access.
  38   void CopySpecifiedLanguagesUp(const std::string& locale_codes);
  39
  40  private:
  41   struct LocaleData {
  42     LocaleData() {}
  43     LocaleData(const base::string16& name, const std::string& code)
  44         : native_name(name), locale_code(code) {}
  45
  46     base::string16 native_name;
  47     std::string locale_code;  // E.g., en-us.
  48   };
  49
  50   typedef std::map<base::string16, LocaleData> LocaleDataMap;
  51
  52   void InitNativeNames(const std::vector<std::string>& locale_codes);
  53
  54   // The names of all the locales in the current application locale.
  55   std::vector<base::string16> locale_names_;
  56
  57   // A map of some extra data (LocaleData) keyed off the name of the locale.
  58   LocaleDataMap native_names_;
  59
  60   DISALLOW_COPY_AND_ASSIGN(LanguageList);
  61 };
  62
  63 }  // namespace chromeos
  64
  65 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LANGUAGE_LIST_H_