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      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   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 string16& name, const std::string& code)
     44         : native_name(name), locale_code(code) {}
     45 
     46     string16 native_name;
     47     std::string locale_code;  // E.g., en-us.
     48   };
     49 
     50   typedef std::map<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<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_
     66