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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_UI_WEBUI_OPTIONS_CHROMEOS_SYSTEM_SETTINGS_PROVIDER_H_
#define CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_SYSTEM_SETTINGS_PROVIDER_H_
#include <vector>
#include "base/callback.h"
#include "base/string16.h"
#include "chrome/browser/chromeos/cros_settings_provider.h"
#include "chrome/browser/chromeos/system/timezone_settings.h"
#include "third_party/icu/public/i18n/unicode/timezone.h"
namespace base {
class Value;
class ListValue;
}
namespace chromeos {
class SystemSettingsProvider : public CrosSettingsProvider,
public system::TimezoneSettings::Observer {
public:
explicit SystemSettingsProvider(const NotifyObserversCallback& notify_cb);
virtual ~SystemSettingsProvider();
// CrosSettingsProvider implementation.
virtual const base::Value* Get(const std::string& path) const OVERRIDE;
virtual bool PrepareTrustedValues(const base::Closure& callback) OVERRIDE;
virtual bool HandlesSetting(const std::string& path) const OVERRIDE;
virtual void Reload() OVERRIDE;
// TimezoneSettings::Observer implementation.
virtual void TimezoneChanged(const icu::TimeZone& timezone) OVERRIDE;
// Creates the map of timezones used by the options page.
base::ListValue* GetTimezoneList();
private:
// CrosSettingsProvider implementation.
virtual void DoSet(const std::string& path,
const base::Value& in_value) OVERRIDE;
// Gets timezone name.
static string16 GetTimezoneName(const icu::TimeZone& timezone);
// Gets timezone ID which is also used as timezone pref value.
static string16 GetTimezoneID(const icu::TimeZone& timezone);
// Gets timezone object from its id.
const icu::TimeZone* GetTimezone(const string16& timezone_id);
// Gets a timezone id from a timezone in |timezones_| that has the same
// rule of given |timezone|.
// One timezone could have multiple timezones,
// e.g.
// US/Pacific == America/Los_Angeles
// We should always use the known timezone id when passing back as
// pref values.
string16 GetKnownTimezoneID(const icu::TimeZone& timezone) const;
// Timezones.
std::vector<icu::TimeZone*> timezones_;
scoped_ptr<base::Value> timezone_value_;
DISALLOW_COPY_AND_ASSIGN(SystemSettingsProvider);
};
} // namespace chromeos
#endif // CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_SYSTEM_SETTINGS_PROVIDER_H_
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