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| 1 // Copyright (c) 2012 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 #include "chrome/browser/ui/webui/options/chromeos/system_settings_provider.h" | |
| 6 | |
| 7 #include <string> | |
| 8 | |
| 9 #include "base/i18n/rtl.h" | |
| 10 #include "base/lazy_instance.h" | |
| 11 #include "base/memory/scoped_ptr.h" | |
| 12 #include "base/stl_util.h" | |
| 13 #include "base/string_util.h" | |
| 14 #include "base/stringprintf.h" | |
| 15 #include "base/synchronization/lock.h" | |
| 16 #include "base/time.h" | |
| 17 #include "base/utf_string_conversions.h" | |
| 18 #include "base/values.h" | |
| 19 #include "chrome/browser/chromeos/cros/cros_library.h" | |
| 20 #include "chrome/browser/chromeos/cros_settings.h" | |
| 21 #include "chrome/browser/chromeos/cros_settings_names.h" | |
| 22 #include "chrome/browser/chromeos/login/user_manager.h" | |
| 23 #include "grit/generated_resources.h" | |
| 24 #include "ui/base/l10n/l10n_util.h" | |
| 25 #include "unicode/calendar.h" | |
| 26 #include "unicode/timezone.h" | |
| 27 #include "unicode/ures.h" | |
| 28 | |
| 29 namespace { | |
| 30 | |
| 31 // TODO(jungshik): Using Enumerate method in ICU gives 600+ timezones. | |
| 32 // Even after filtering out duplicate entries with a strict identity check, | |
| 33 // we still have 400+ zones. Relaxing the criteria for the timezone | |
| 34 // identity is likely to cut down the number to < 100. Until we | |
| 35 // come up with a better list, we hard-code the following list as used by | |
| 36 // Android. | |
| 37 static const char* kTimeZones[] = { | |
| 38 "Pacific/Majuro", | |
| 39 "Pacific/Midway", | |
| 40 "Pacific/Honolulu", | |
| 41 "America/Anchorage", | |
| 42 "America/Los_Angeles", | |
| 43 "America/Tijuana", | |
| 44 "America/Denver", | |
| 45 "America/Phoenix", | |
| 46 "America/Chihuahua", | |
| 47 "America/Chicago", | |
| 48 "America/Mexico_City", | |
| 49 "America/Costa_Rica", | |
| 50 "America/Regina", | |
| 51 "America/New_York", | |
| 52 "America/Bogota", | |
| 53 "America/Caracas", | |
| 54 "America/Barbados", | |
| 55 "America/Manaus", | |
| 56 "America/Santiago", | |
| 57 "America/St_Johns", | |
| 58 "America/Sao_Paulo", | |
| 59 "America/Araguaina", | |
| 60 "America/Argentina/Buenos_Aires", | |
| 61 "America/Godthab", | |
| 62 "America/Montevideo", | |
| 63 "Atlantic/South_Georgia", | |
| 64 "Atlantic/Azores", | |
| 65 "Atlantic/Cape_Verde", | |
| 66 "Africa/Casablanca", | |
| 67 "Europe/London", | |
| 68 "Europe/Amsterdam", | |
| 69 "Europe/Belgrade", | |
| 70 "Europe/Brussels", | |
| 71 "Europe/Sarajevo", | |
| 72 "Africa/Windhoek", | |
| 73 "Africa/Brazzaville", | |
| 74 "Asia/Amman", | |
| 75 "Europe/Athens", | |
| 76 "Asia/Beirut", | |
| 77 "Africa/Cairo", | |
| 78 "Europe/Helsinki", | |
| 79 "Asia/Jerusalem", | |
| 80 "Europe/Minsk", | |
| 81 "Africa/Harare", | |
| 82 "Asia/Baghdad", | |
| 83 "Europe/Moscow", | |
| 84 "Asia/Kuwait", | |
| 85 "Africa/Nairobi", | |
| 86 "Asia/Tehran", | |
| 87 "Asia/Baku", | |
| 88 "Asia/Tbilisi", | |
| 89 "Asia/Yerevan", | |
| 90 "Asia/Dubai", | |
| 91 "Asia/Kabul", | |
| 92 "Asia/Karachi", | |
| 93 "Asia/Oral", | |
| 94 "Asia/Yekaterinburg", | |
| 95 "Asia/Calcutta", | |
| 96 "Asia/Colombo", | |
| 97 "Asia/Katmandu", | |
| 98 "Asia/Almaty", | |
| 99 "Asia/Rangoon", | |
| 100 "Asia/Krasnoyarsk", | |
| 101 "Asia/Bangkok", | |
| 102 "Asia/Shanghai", | |
| 103 "Asia/Hong_Kong", | |
| 104 "Asia/Irkutsk", | |
| 105 "Asia/Kuala_Lumpur", | |
| 106 "Australia/Perth", | |
| 107 "Asia/Taipei", | |
| 108 "Asia/Seoul", | |
| 109 "Asia/Tokyo", | |
| 110 "Asia/Yakutsk", | |
| 111 "Australia/Adelaide", | |
| 112 "Australia/Darwin", | |
| 113 "Australia/Brisbane", | |
| 114 "Australia/Hobart", | |
| 115 "Australia/Sydney", | |
| 116 "Asia/Vladivostok", | |
| 117 "Pacific/Guam", | |
| 118 "Asia/Magadan", | |
| 119 "Pacific/Auckland", | |
| 120 "Pacific/Fiji", | |
| 121 "Pacific/Tongatapu", | |
| 122 }; | |
| 123 | |
| 124 static base::LazyInstance<base::Lock>::Leaky | |
| 125 g_timezone_bundle_lock = LAZY_INSTANCE_INITIALIZER; | |
| 126 | |
| 127 struct UResClose { | |
| 128 inline void operator() (UResourceBundle* b) const { | |
| 129 ures_close(b); | |
| 130 } | |
| 131 }; | |
| 132 | |
| 133 string16 GetExemplarCity(const icu::TimeZone& zone) { | |
| 134 // TODO(jungshik): After upgrading to ICU 4.6, use U_ICUDATA_ZONE | |
| 135 static const char* zone_bundle_name = NULL; | |
| 136 | |
| 137 // These will be leaked at the end. | |
| 138 static UResourceBundle *zone_bundle = NULL; | |
| 139 static UResourceBundle *zone_strings = NULL; | |
| 140 | |
| 141 UErrorCode status = U_ZERO_ERROR; | |
| 142 { | |
| 143 base::AutoLock lock(g_timezone_bundle_lock.Get()); | |
| 144 if (zone_bundle == NULL) | |
| 145 zone_bundle = ures_open(zone_bundle_name, uloc_getDefault(), &status); | |
| 146 | |
| 147 if (zone_strings == NULL) | |
| 148 zone_strings = ures_getByKey(zone_bundle, "zone_strings", NULL, &status); | |
| 149 } | |
| 150 | |
| 151 icu::UnicodeString zone_id; | |
| 152 zone.getID(zone_id); | |
| 153 std::string zone_id_str; | |
| 154 zone_id.toUTF8String(zone_id_str); | |
| 155 | |
| 156 // resource keys for timezones use ':' in place of '/'. | |
| 157 ReplaceSubstringsAfterOffset(&zone_id_str, 0, "/", ":"); | |
| 158 scoped_ptr_malloc<UResourceBundle, UResClose> zone_item( | |
| 159 ures_getByKey(zone_strings, zone_id_str.c_str(), NULL, &status)); | |
| 160 icu::UnicodeString city; | |
| 161 if (!U_FAILURE(status)) { | |
| 162 city = icu::ures_getUnicodeStringByKey(zone_item.get(), "ec", &status); | |
| 163 if (U_SUCCESS(status)) | |
| 164 return string16(city.getBuffer(), city.length()); | |
| 165 } | |
| 166 | |
| 167 // Fallback case in case of failure. | |
| 168 ReplaceSubstringsAfterOffset(&zone_id_str, 0, ":", "/"); | |
| 169 // Take the last component of a timezone id (e.g. 'Baz' in 'Foo/Bar/Baz'). | |
| 170 // Depending on timezones, keeping all but the 1st component | |
| 171 // (e.g. Bar/Baz) may be better, but our current list does not have | |
| 172 // any timezone for which that's the case. | |
| 173 std::string::size_type slash_pos = zone_id_str.rfind('/'); | |
| 174 if (slash_pos != std::string::npos && slash_pos < zone_id_str.size()) | |
| 175 zone_id_str.erase(0, slash_pos + 1); | |
| 176 // zone id has '_' in place of ' '. | |
| 177 ReplaceSubstringsAfterOffset(&zone_id_str, 0, "_", " "); | |
| 178 return ASCIIToUTF16(zone_id_str); | |
| 179 } | |
| 180 | |
| 181 } // namespace anonymous | |
| 182 | |
| 183 namespace chromeos { | |
| 184 | |
| 185 SystemSettingsProvider::SystemSettingsProvider( | |
| 186 const NotifyObserversCallback& notify_cb) | |
| 187 : CrosSettingsProvider(notify_cb) { | |
| 188 for (size_t i = 0; i < arraysize(kTimeZones); i++) { | |
| 189 timezones_.push_back(icu::TimeZone::createTimeZone( | |
| 190 icu::UnicodeString(kTimeZones[i], -1, US_INV))); | |
| 191 } | |
| 192 system::TimezoneSettings::GetInstance()->AddObserver(this); | |
| 193 timezone_value_.reset(base::Value::CreateStringValue(GetKnownTimezoneID( | |
| 194 system::TimezoneSettings::GetInstance()->GetTimezone()))); | |
| 195 } | |
| 196 | |
| 197 SystemSettingsProvider::~SystemSettingsProvider() { | |
| 198 system::TimezoneSettings::GetInstance()->RemoveObserver(this); | |
| 199 STLDeleteElements(&timezones_); | |
| 200 } | |
| 201 | |
| 202 void SystemSettingsProvider::DoSet(const std::string& path, | |
| 203 const base::Value& in_value) { | |
| 204 // Non-guest users can change the time zone. | |
| 205 if (UserManager::Get()->IsLoggedInAsGuest()) | |
| 206 return; | |
| 207 | |
| 208 if (path == kSystemTimezone) { | |
| 209 string16 value; | |
| 210 if (!in_value.IsType(Value::TYPE_STRING) || !in_value.GetAsString(&value)) | |
| 211 return; | |
| 212 const icu::TimeZone* timezone = GetTimezone(value); | |
| 213 if (!timezone) | |
| 214 return; | |
| 215 system::TimezoneSettings::GetInstance()->SetTimezone(*timezone); | |
| 216 timezone_value_.reset( | |
| 217 base::Value::CreateStringValue(GetKnownTimezoneID(*timezone))); | |
| 218 } | |
| 219 } | |
| 220 | |
| 221 const base::Value* SystemSettingsProvider::Get(const std::string& path) const { | |
| 222 if (path == kSystemTimezone) | |
| 223 return timezone_value_.get(); | |
| 224 return NULL; | |
| 225 } | |
| 226 | |
| 227 // The timezone is always trusted. | |
| 228 bool SystemSettingsProvider::PrepareTrustedValues(const base::Closure& cb) { | |
| 229 return true; | |
| 230 } | |
| 231 | |
| 232 bool SystemSettingsProvider::HandlesSetting(const std::string& path) const { | |
| 233 return path == kSystemTimezone; | |
| 234 } | |
| 235 | |
| 236 void SystemSettingsProvider::Reload() { | |
| 237 // TODO(pastarmovj): We can actually cache the timezone here to make returning | |
| 238 // it faster. | |
| 239 } | |
| 240 | |
| 241 void SystemSettingsProvider::TimezoneChanged(const icu::TimeZone& timezone) { | |
| 242 // Fires system setting change notification. | |
| 243 timezone_value_.reset( | |
| 244 base::Value::CreateStringValue(GetKnownTimezoneID(timezone))); | |
| 245 NotifyObservers(kSystemTimezone); | |
| 246 } | |
| 247 | |
| 248 ListValue* SystemSettingsProvider::GetTimezoneList() { | |
| 249 ListValue* timezoneList = new ListValue(); | |
| 250 for (std::vector<icu::TimeZone*>::iterator iter = timezones_.begin(); | |
| 251 iter != timezones_.end(); ++iter) { | |
| 252 const icu::TimeZone* timezone = *iter; | |
| 253 ListValue* option = new ListValue(); | |
| 254 option->Append(Value::CreateStringValue(GetTimezoneID(*timezone))); | |
| 255 option->Append(Value::CreateStringValue(GetTimezoneName(*timezone))); | |
| 256 timezoneList->Append(option); | |
| 257 } | |
| 258 return timezoneList; | |
| 259 } | |
| 260 | |
| 261 string16 SystemSettingsProvider::GetTimezoneName( | |
| 262 const icu::TimeZone& timezone) { | |
| 263 // Instead of using the raw_offset, use the offset in effect now. | |
| 264 // For instance, US Pacific Time, the offset shown will be -7 in summer | |
| 265 // while it'll be -8 in winter. | |
| 266 int raw_offset, dst_offset; | |
| 267 UDate now = icu::Calendar::getNow(); | |
| 268 UErrorCode status = U_ZERO_ERROR; | |
| 269 timezone.getOffset(now, false, raw_offset, dst_offset, status); | |
| 270 DCHECK(U_SUCCESS(status)); | |
| 271 int offset = raw_offset + dst_offset; | |
| 272 // offset is in msec. | |
| 273 int minute_offset = std::abs(offset) / 60000; | |
| 274 int hour_offset = minute_offset / 60; | |
| 275 int min_remainder = minute_offset % 60; | |
| 276 // Some timezones have a non-integral hour offset. So, we need to | |
| 277 // use hh:mm form. | |
| 278 std::string offset_str = base::StringPrintf(offset >= 0 ? | |
| 279 "UTC+%d:%02d" : "UTC-%d:%02d", hour_offset, min_remainder); | |
| 280 | |
| 281 // TODO(jungshik): When coming up with a better list of timezones, we also | |
| 282 // have to come up with better 'display' names. One possibility is to list | |
| 283 // multiple cities (e.g. "Los Angeles, Vancouver .." in the order of | |
| 284 // the population of a country the city belongs to.). | |
| 285 // We can also think of using LONG_GENERIC or LOCATION once we upgrade | |
| 286 // to ICU 4.6. | |
| 287 // In the meantime, we use "LONG" name with "Exemplar City" to distinguish | |
| 288 // multiple timezones with the same "LONG" name but with different | |
| 289 // rules (e.g. US Mountain Time in Denver vs Phoenix). | |
| 290 icu::UnicodeString name; | |
| 291 timezone.getDisplayName(dst_offset != 0, icu::TimeZone::LONG, name); | |
| 292 string16 result(l10n_util::GetStringFUTF16( | |
| 293 IDS_OPTIONS_SETTINGS_TIMEZONE_DISPLAY_TEMPLATE, ASCIIToUTF16(offset_str), | |
| 294 string16(name.getBuffer(), name.length()), GetExemplarCity(timezone))); | |
| 295 base::i18n::AdjustStringForLocaleDirection(&result); | |
| 296 return result; | |
| 297 } | |
| 298 | |
| 299 string16 SystemSettingsProvider::GetTimezoneID( | |
| 300 const icu::TimeZone& timezone) { | |
| 301 icu::UnicodeString id; | |
| 302 timezone.getID(id); | |
| 303 return string16(id.getBuffer(), id.length()); | |
| 304 } | |
| 305 | |
| 306 const icu::TimeZone* SystemSettingsProvider::GetTimezone( | |
| 307 const string16& timezone_id) { | |
| 308 for (std::vector<icu::TimeZone*>::iterator iter = timezones_.begin(); | |
| 309 iter != timezones_.end(); ++iter) { | |
| 310 const icu::TimeZone* timezone = *iter; | |
| 311 if (GetTimezoneID(*timezone) == timezone_id) { | |
| 312 return timezone; | |
| 313 } | |
| 314 } | |
| 315 return NULL; | |
| 316 } | |
| 317 | |
| 318 string16 SystemSettingsProvider::GetKnownTimezoneID( | |
| 319 const icu::TimeZone& timezone) const { | |
| 320 for (std::vector<icu::TimeZone*>::const_iterator iter = timezones_.begin(); | |
| 321 iter != timezones_.end(); ++iter) { | |
| 322 const icu::TimeZone* known_timezone = *iter; | |
| 323 if (known_timezone->hasSameRules(timezone)) | |
| 324 return GetTimezoneID(*known_timezone); | |
| 325 } | |
| 326 | |
| 327 // Not able to find a matching timezone in our list. | |
| 328 return string16(); | |
| 329 } | |
| 330 | |
| 331 } // namespace chromeos | |
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Chromium Code Reviews
Issue 9814030:
get rid of old options pages (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src