Options: s/options2/options/.

chrome/browser/ui/webui/options2/chromeos/timezone_options_util.cc

-// 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.
-
-#include "chrome/browser/ui/webui/options2/chromeos/timezone_options_util.h"
-
-#include <string>
-
-#include "base/i18n/rtl.h"
-#include "base/lazy_instance.h"
-#include "base/string_util.h"
-#include "base/stringprintf.h"
-#include "base/synchronization/lock.h"
-#include "base/utf_string_conversions.h"
-#include "base/values.h"
-#include "chrome/browser/chromeos/system/timezone_settings.h"
-#include "grit/generated_resources.h"
-#include "ui/base/l10n/l10n_util.h"
-#include "unicode/calendar.h"
-#include "unicode/timezone.h"
-#include "unicode/ures.h"
-#include "unicode/utypes.h"
-
-namespace {
-
-struct UResClose {
-  inline void operator() (UResourceBundle* b) const {
-    ures_close(b);
-  }
-};
-
-static base::LazyInstance<base::Lock>::Leaky
-    g_timezone_bundle_lock = LAZY_INSTANCE_INITIALIZER;
-
-// Returns an exemplary city in the given timezone.
-string16 GetExemplarCity(const icu::TimeZone& zone) {
-  // TODO(jungshik): After upgrading to ICU 4.6, use U_ICUDATA_ZONE
-  static const char* zone_bundle_name = NULL;
-
-  // These will be leaked at the end.
-  static UResourceBundle *zone_bundle = NULL;
-  static UResourceBundle *zone_strings = NULL;
-
-  UErrorCode status = U_ZERO_ERROR;
-  {
-    base::AutoLock lock(g_timezone_bundle_lock.Get());
-    if (zone_bundle == NULL)
-      zone_bundle = ures_open(zone_bundle_name, uloc_getDefault(), &status);
-
-    if (zone_strings == NULL)
-      zone_strings = ures_getByKey(zone_bundle, "zone_strings", NULL, &status);
-  }
-
-  icu::UnicodeString zone_id;
-  zone.getID(zone_id);
-  std::string zone_id_str;
-  zone_id.toUTF8String(zone_id_str);
-
-  // Resource keys for timezones use ':' in place of '/'.
-  ReplaceSubstringsAfterOffset(&zone_id_str, 0, "/", ":");
-  scoped_ptr_malloc<UResourceBundle, UResClose> zone_item(
-      ures_getByKey(zone_strings, zone_id_str.c_str(), NULL, &status));
-  icu::UnicodeString city;
-  if (!U_FAILURE(status)) {
-    city = icu::ures_getUnicodeStringByKey(zone_item.get(), "ec", &status);
-    if (U_SUCCESS(status))
-      return string16(city.getBuffer(), city.length());
-  }
-
-  // Fallback case in case of failure.
-  ReplaceSubstringsAfterOffset(&zone_id_str, 0, ":", "/");
-  // Take the last component of a timezone id (e.g. 'Baz' in 'Foo/Bar/Baz').
-  // Depending on timezones, keeping all but the 1st component
-  // (e.g. Bar/Baz) may be better, but our current list does not have
-  // any timezone for which that's the case.
-  std::string::size_type slash_pos = zone_id_str.rfind('/');
-  if (slash_pos != std::string::npos && slash_pos < zone_id_str.size())
-    zone_id_str.erase(0, slash_pos + 1);
-  // zone id has '_' in place of ' '.
-  ReplaceSubstringsAfterOffset(&zone_id_str, 0, "_", " ");
-  return ASCIIToUTF16(zone_id_str);
-}
-
-// Gets the given timezone's name for visualization.
-string16 GetTimezoneName(const icu::TimeZone& timezone) {
-  // Instead of using the raw_offset, use the offset in effect now.
-  // For instance, US Pacific Time, the offset shown will be -7 in summer
-  // while it'll be -8 in winter.
-  int raw_offset, dst_offset;
-  UDate now = icu::Calendar::getNow();
-  UErrorCode status = U_ZERO_ERROR;
-  timezone.getOffset(now, false, raw_offset, dst_offset, status);
-  DCHECK(U_SUCCESS(status));
-  int offset = raw_offset + dst_offset;
-  // |offset| is in msec.
-  int minute_offset = std::abs(offset) / 60000;
-  int hour_offset = minute_offset / 60;
-  int min_remainder = minute_offset % 60;
-  // Some timezones have a non-integral hour offset. So, we need to use hh:mm
-  // form.
-  std::string  offset_str = base::StringPrintf(offset >= 0 ?
-      "UTC+%d:%02d" : "UTC-%d:%02d", hour_offset, min_remainder);
-
-  // TODO(jungshik): When coming up with a better list of timezones, we also
-  // have to come up with better 'display' names. One possibility is to list
-  // multiple cities (e.g. "Los Angeles, Vancouver .." in the order of
-  // the population of a country the city belongs to.).
-  // We can also think of using LONG_GENERIC or LOCATION once we upgrade
-  // to ICU 4.6.
-  // In the meantime, we use "LONG" name with "Exemplar City" to distinguish
-  // multiple timezones with the same "LONG" name but with different
-  // rules (e.g. US Mountain Time in Denver vs Phoenix).
-  icu::UnicodeString name;
-  timezone.getDisplayName(dst_offset != 0, icu::TimeZone::LONG, name);
-  string16 result(l10n_util::GetStringFUTF16(
-      IDS_OPTIONS_SETTINGS_TIMEZONE_DISPLAY_TEMPLATE, ASCIIToUTF16(offset_str),
-      string16(name.getBuffer(), name.length()), GetExemplarCity(timezone)));
-  base::i18n::AdjustStringForLocaleDirection(&result);
-  return result;
-}
-
-}  // namespace
-
-namespace options {
-
-// Creates a list of pairs of each timezone's ID and name.
-scoped_ptr<base::ListValue> GetTimezoneList() {
-  const std::vector<icu::TimeZone*> &timezones =
-      chromeos::system::TimezoneSettings::GetInstance()->GetTimezoneList();
-  scoped_ptr<base::ListValue> timezoneList(new base::ListValue());
-  for (std::vector<icu::TimeZone*>::const_iterator iter = timezones.begin();
-       iter != timezones.end(); ++iter) {
-    const icu::TimeZone* timezone = *iter;
-    base::ListValue* option = new base::ListValue();
-    option->Append(Value::CreateStringValue(
-        chromeos::system::TimezoneSettings::GetTimezoneID(*timezone)));
-    option->Append(Value::CreateStringValue(GetTimezoneName(*timezone)));
-    timezoneList->Append(option);
-  }
-  return timezoneList.Pass();
-}
-
-}  // namespace options