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 #ifndef CHROMEOS_SETTINGS_TIMEZONE_SETTINGS_H_ 6 #define CHROMEOS_SETTINGS_TIMEZONE_SETTINGS_H_ 7 8 #include <vector> 9 10 #include "base/strings/string16.h" 11 #include "chromeos/settings/cros_settings_provider.h" 12 #include "third_party/icu/source/i18n/unicode/timezone.h" 13 14 namespace chromeos { 15 namespace system { 16 17 // This interface provides access to Chrome OS timezone settings. 18 class CHROMEOS_EXPORT TimezoneSettings { 19 public: 20 class Observer { 21 public: 22 // Called when the timezone has changed. |timezone| is non-null. 23 virtual void TimezoneChanged(const icu::TimeZone& timezone) = 0; 24 protected: 25 virtual ~Observer(); 26 }; 27 28 static TimezoneSettings* GetInstance(); 29 30 // Returns the current timezone as an icu::Timezone object. 31 virtual const icu::TimeZone& GetTimezone() = 0; 32 virtual base::string16 GetCurrentTimezoneID() = 0; 33 34 // Sets the current timezone and notifies all Observers. 35 virtual void SetTimezone(const icu::TimeZone& timezone) = 0; 36 virtual void SetTimezoneFromID(const base::string16& timezone_id) = 0; 37 38 virtual void AddObserver(Observer* observer) = 0; 39 virtual void RemoveObserver(Observer* observer) = 0; 40 41 virtual const std::vector<icu::TimeZone*>& GetTimezoneList() const = 0; 42 43 // Gets timezone ID which is also used as timezone pref value. 44 static base::string16 GetTimezoneID(const icu::TimeZone& timezone); 45 46 protected: 47 virtual ~TimezoneSettings() {} 48 }; 49 50 } // namespace system 51 } // namespace chromeos 52 53 #endif // CHROMEOS_SETTINGS_TIMEZONE_SETTINGS_H_ 54
