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// Copyright (c) 2010 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/chromeos/dom_ui/system_settings_provider.h"
#include <string>
#include "base/stl_util-inl.h"
#include "base/string_util.h"
#include "base/stringprintf.h"
#include "base/time.h"
#include "base/time.h"
#include "base/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/browser/chromeos/cros/cros_library.h"
#include "chrome/browser/chromeos/cros_settings.h"
#include "chrome/browser/chromeos/cros_settings_names.h"
namespace chromeos {
static const char* kTimeZonesUtf8[] = {
"Pacific/Samoa",
"US/Hawaii",
"US/Alaska",
"US/Pacific",
"US/Mountain",
"US/Central",
"US/Eastern",
"America/Santiago",
"America/Sao_Paulo",
"Atlantic/South_Georgia",
"Atlantic/Cape_Verde",
"Europe/London",
"Europe/Rome",
"Europe/Helsinki",
"Europe/Moscow",
"Asia/Dubai",
"Asia/Karachi",
"Asia/Dhaka",
"Asia/Bangkok",
"Asia/Hong_Kong",
"Asia/Tokyo",
"Australia/Sydney",
"Asia/Magadan",
"Pacific/Auckland" };
SystemSettingsProvider::SystemSettingsProvider() {
// TODO(chocobo): For now, add all the GMT timezones.
// We may eventually want to use icu::TimeZone::createEnumeration()
// to list all the timezones and pick the ones we want to show.
// NOTE: This currently does not handle daylight savings properly
// b/c this is just a manually selected list of timezones that
// happen to span the GMT-11 to GMT+12 Today. When daylight savings
// kick in, this list might have more than one timezone in the same
// GMT bucket.
for (size_t i = 0; i < arraysize(kTimeZonesUtf8); i++) {
timezones_.push_back(icu::TimeZone::createTimeZone(
icu::UnicodeString::fromUTF8(kTimeZonesUtf8[i])));
}
CrosLibrary::Get()->GetSystemLibrary()->AddObserver(this);
}
SystemSettingsProvider::~SystemSettingsProvider() {
CrosLibrary::Get()->GetSystemLibrary()->RemoveObserver(this);
STLDeleteElements(&timezones_);
}
void SystemSettingsProvider::Set(const std::string& path, Value* in_value) {
if (path == kSystemTimezone) {
string16 value;
if (!in_value || !in_value->IsType(Value::TYPE_STRING) ||
!in_value->GetAsString(&value))
return;
const icu::TimeZone* timezone = GetTimezone(value);
if (!timezone)
return;
CrosLibrary::Get()->GetSystemLibrary()->SetTimezone(timezone);
}
}
bool SystemSettingsProvider::Get(const std::string& path,
Value** out_value) const {
if (path == kSystemTimezone) {
*out_value = Value::CreateStringValue(
GetTimezoneID(CrosLibrary::Get()->GetSystemLibrary()->GetTimezone()));
return true;
}
return false;
}
bool SystemSettingsProvider::HandlesSetting(const std::string& path) {
return ::StartsWithASCII(path, std::string("cros.system."), true);
}
void SystemSettingsProvider::TimezoneChanged(const icu::TimeZone& timezone) {
// Fires system setting change notification.
CrosSettings::Get()->FireObservers(kSystemTimezone);
}
ListValue* SystemSettingsProvider::GetTimezoneList() {
ListValue* timezoneList = new ListValue();
for (std::vector<icu::TimeZone*>::iterator iter = timezones_.begin();
iter != timezones_.end(); ++iter) {
const icu::TimeZone* timezone = *iter;
ListValue* option = new ListValue();
option->Append(Value::CreateStringValue(GetTimezoneID(*timezone)));
option->Append(Value::CreateStringValue(GetTimezoneName(*timezone)));
timezoneList->Append(option);
}
return timezoneList;
}
string16 SystemSettingsProvider::GetTimezoneName(
const icu::TimeZone& timezone) {
icu::UnicodeString name;
timezone.getDisplayName(name);
string16 output(name.getBuffer(), name.length());
int hour_offset = timezone.getRawOffset() / 3600000;
const wchar_t* format;
if (hour_offset == 0)
format = L"(GMT) ";
else
format = L"(GMT%+d) ";
std::wstring offset = base::StringPrintf(format, hour_offset);
return WideToUTF16(offset) + output;
}
string16 SystemSettingsProvider::GetTimezoneID(
const icu::TimeZone& timezone) {
icu::UnicodeString id;
timezone.getID(id);
return string16(id.getBuffer(), id.length());
}
const icu::TimeZone* SystemSettingsProvider::GetTimezone(
const string16& timezone_id) {
for (std::vector<icu::TimeZone*>::iterator iter = timezones_.begin();
iter != timezones_.end(); ++iter) {
const icu::TimeZone* timezone = *iter;
if (GetTimezoneID(*timezone) == timezone_id) {
return timezone;
}
}
return NULL;
}
} // namespace chromeos
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