Bug fix: Append a language to the list after blocking it for Translate on Chrome OS

chrome/browser/ui/webui/options/language_options_handler_common.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/options/language_options_handler_common.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/spellchecker/spellcheck_factory.h"
 #include "chrome/browser/spellchecker/spellcheck_service.h"
 #include "chrome/browser/translate/translate_manager.h"
+#include "chrome/browser/translate/translate_prefs.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/spellcheck_common.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"
 
@@ skipping 121 matching lines @@
           &LanguageOptionsHandlerCommon::SpellCheckLanguageChangeCallback,
           base::Unretained(this)));
   web_ui()->RegisterMessageCallback("uiLanguageChange",
       base::Bind(
           &LanguageOptionsHandlerCommon::UiLanguageChangeCallback,
           base::Unretained(this)));
   web_ui()->RegisterMessageCallback("retryDictionaryDownload",
       base::Bind(
           &LanguageOptionsHandlerCommon::RetrySpellcheckDictionaryDownload,
           base::Unretained(this)));
+  web_ui()->RegisterMessageCallback("updateLanguageList",
+      base::Bind(
+          &LanguageOptionsHandlerCommon::UpdateLanguageListCallback,
+          base::Unretained(this)));
 }
 
 void LanguageOptionsHandlerCommon::OnHunspellDictionaryInitialized() {
 }
 
 void LanguageOptionsHandlerCommon::OnHunspellDictionaryDownloadBegin() {
   web_ui()->CallJavascriptFunction(
       "options.LanguageOptions.onDictionaryDownloadBegin",
       StringValue(GetHunspellDictionary()->GetLanguage()));
 }
@@ skipping 57 matching lines @@
 void LanguageOptionsHandlerCommon::SpellCheckLanguageChangeCallback(
     const ListValue* args) {
   const std::string language_code = UTF16ToASCII(ExtractStringValue(args));
   CHECK(!language_code.empty());
   const std::string action = base::StringPrintf(
       "LanguageOptions_SpellCheckLanguageChange_%s", language_code.c_str());
   content::RecordComputedAction(action);
   RefreshHunspellDictionary();
 }
 
+void LanguageOptionsHandlerCommon::UpdateLanguageListCallback(
+    const ListValue* args) {
+  CHECK_EQ(args->GetSize(), 1u);
+  const ListValue* language_list;
+  args->GetList(0, &language_list);
+  DCHECK(language_list);
+
+  std::vector<std::string> languages;
+  for (ListValue::const_iterator it = language_list->begin();
+       it != language_list->end(); ++it) {
+    std::string lang;
+    (*it)->GetAsString(&lang);
+    languages.push_back(lang);
+  }
+
+  Profile* profile = Profile::FromWebUI(web_ui());
+  PrefService* prefs = profile->GetPrefs();
+  TranslatePrefs translate_prefs(prefs);
+  translate_prefs.UpdateLanguageList(languages);
+}
+
 void LanguageOptionsHandlerCommon::RetrySpellcheckDictionaryDownload(
     const ListValue* args) {
   GetHunspellDictionary()->RetryDownloadDictionary(
       Profile::FromWebUI(web_ui())->GetRequestContext());
 }
 
 void LanguageOptionsHandlerCommon::RefreshHunspellDictionary() {
   if (hunspell_dictionary_.get())
     hunspell_dictionary_->RemoveObserver(this);
   hunspell_dictionary_.reset();
   hunspell_dictionary_ = SpellcheckServiceFactory::GetForProfile(
       Profile::FromWebUI(web_ui()))->GetHunspellDictionary()->AsWeakPtr();
   hunspell_dictionary_->AddObserver(this);
 }
 
 base::WeakPtr<SpellcheckHunspellDictionary>&
     LanguageOptionsHandlerCommon::GetHunspellDictionary() {
   if (!hunspell_dictionary_.get())
     RefreshHunspellDictionary();
   return hunspell_dictionary_;
 }
 
 }  // namespace options