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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.
#include "chrome/browser/ui/webui/options/language_options_handler.h"
#include <map>
#include <string>
#include <utility>
#include <vector>
#include "base/basictypes.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/i18n/rtl.h"
#include "base/prefs/pref_service.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/lifetime/application_lifetime.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "content/public/browser/user_metrics.h"
#include "content/public/browser/web_ui.h"
#include "grit/chromium_strings.h"
#include "grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
using content::UserMetricsAction;
namespace options {
LanguageOptionsHandler::LanguageOptionsHandler() {
}
LanguageOptionsHandler::~LanguageOptionsHandler() {
}
void LanguageOptionsHandler::GetLocalizedValues(
DictionaryValue* localized_strings) {
LanguageOptionsHandlerCommon::GetLocalizedValues(localized_strings);
RegisterTitle(localized_strings, "languagePage",
IDS_OPTIONS_SETTINGS_LANGUAGES_DIALOG_TITLE);
localized_strings->SetString("restart_button",
l10n_util::GetStringUTF16(
IDS_OPTIONS_SETTINGS_LANGUAGES_RELAUNCH_BUTTON));
localized_strings->Set("languageList", GetLanguageList());
}
void LanguageOptionsHandler::RegisterMessages() {
LanguageOptionsHandlerCommon::RegisterMessages();
web_ui()->RegisterMessageCallback("uiLanguageRestart",
base::Bind(&LanguageOptionsHandler::RestartCallback,
base::Unretained(this)));
}
ListValue* LanguageOptionsHandler::GetLanguageList() {
// Collect the language codes from the supported accept-languages.
const std::string app_locale = g_browser_process->GetApplicationLocale();
std::vector<std::string> language_codes;
l10n_util::GetAcceptLanguagesForLocale(app_locale, &language_codes);
// Map of display name -> {language code, native_display_name}.
// In theory, we should be able to create a map that is sorted by
// display names using ICU comparator, but doing it is hard, thus we'll
// use an auxiliary vector to achieve the same result.
typedef std::pair<std::string, string16> LanguagePair;
typedef std::map<string16, LanguagePair> LanguageMap;
LanguageMap language_map;
// The auxiliary vector mentioned above.
std::vector<string16> display_names;
// Build the list of display names, and build the language map.
for (size_t i = 0; i < language_codes.size(); ++i) {
string16 display_name =
l10n_util::GetDisplayNameForLocale(language_codes[i], app_locale,
false);
string16 native_display_name =
l10n_util::GetDisplayNameForLocale(language_codes[i], language_codes[i],
false);
display_names.push_back(display_name);
language_map[display_name] =
std::make_pair(language_codes[i], native_display_name);
}
DCHECK_EQ(display_names.size(), language_map.size());
// Sort display names using locale specific sorter.
l10n_util::SortStrings16(app_locale, &display_names);
// Build the language list from the language map.
ListValue* language_list = new ListValue();
for (size_t i = 0; i < display_names.size(); ++i) {
string16& display_name = display_names[i];
string16 adjusted_display_name(display_name);
base::i18n::AdjustStringForLocaleDirection(&adjusted_display_name);
const LanguagePair& pair = language_map[display_name];
string16 adjusted_native_display_name(pair.second);
base::i18n::AdjustStringForLocaleDirection(&adjusted_native_display_name);
bool has_rtl_chars = base::i18n::StringContainsStrongRTLChars(display_name);
std::string directionality = has_rtl_chars ? "rtl" : "ltr";
DictionaryValue* dictionary = new DictionaryValue();
dictionary->SetString("code", pair.first);
dictionary->SetString("displayName", adjusted_display_name);
dictionary->SetString("textDirection", directionality);
dictionary->SetString("nativeDisplayName", adjusted_native_display_name);
language_list->Append(dictionary);
}
return language_list;
}
string16 LanguageOptionsHandler::GetProductName() {
return l10n_util::GetStringUTF16(IDS_PRODUCT_NAME);
}
void LanguageOptionsHandler::SetApplicationLocale(
const std::string& language_code) {
PrefService* pref_service = g_browser_process->local_state();
pref_service->SetString(prefs::kApplicationLocale, language_code);
}
void LanguageOptionsHandler::RestartCallback(const ListValue* args) {
content::RecordAction(UserMetricsAction("LanguageOptions_Restart"));
chrome::AttemptRestart();
}
} // namespace options
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