text: // Copyright 2013 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/translate_internals/translate_internals_ui.h"
  
  #include <memory>
  #include <string>
  #include <vector>
  
  #include "base/command_line.h"
  #include "base/values.h"
  #include "chrome/browser/browser_process.h"
  #include "chrome/browser/profiles/profile.h"
  #include "chrome/browser/ui/webui/translate_internals/translate_internals_handler.h"
  #include "chrome/common/chrome_switches.h"
  #include "chrome/common/url_constants.h"
  #include "components/translate/content/common/cld_data_source.h"
  #include "content/public/browser/web_contents.h"
  #include "content/public/browser/web_ui.h"
  #include "content/public/browser/web_ui_data_source.h"
  #include "grit/translate_internals_resources.h"
  #include "ui/base/l10n/l10n_util.h"
  
  namespace {
  
  // Sets the languages to |dict|. Each key is a language code and each value is
  // a language name in the locale.
  void GetLanguages(base::DictionaryValue* dict) {
    DCHECK(dict);
  
    const std::string app_locale = g_browser_process->GetApplicationLocale();
    std::vector<std::string> language_codes;
    l10n_util::GetAcceptLanguagesForLocale(app_locale, &language_codes);
  
    for (std::vector<std::string>::iterator it = language_codes.begin();
         it != language_codes.end(); ++it) {
      const std::string& lang_code = *it;
      base::string16 lang_name =
          l10n_util::GetDisplayNameForLocale(lang_code, app_locale, false);
      dict->SetString(lang_code, lang_name);
    }
  }
  
  content::WebUIDataSource* CreateTranslateInternalsHTMLSource() {
    content::WebUIDataSource* source =
        content::WebUIDataSource::Create(chrome::kChromeUITranslateInternalsHost);
  
    source->SetDefaultResource(IDR_TRANSLATE_INTERNALS_TRANSLATE_INTERNALS_HTML);
    source->SetJsonPath("strings.js");
    source->AddResourcePath("translate_internals.js",
                            IDR_TRANSLATE_INTERNALS_TRANSLATE_INTERNALS_JS);
  
    base::DictionaryValue langs;
    GetLanguages(&langs);
    for (base::DictionaryValue::Iterator it(langs); !it.IsAtEnd(); it.Advance()) {
      std::string key = "language-" + it.key();
      std::string value;
      it.value().GetAsString(&value);
      source->AddString(key, value);
    }
  
    std::string cld_version = "";
    std::string cld_data_source = "";
    // The version string is hardcoded here to avoid linking with the CLD
    // library, see http://crbug.com/297777.
    cld_version = "2";
    cld_data_source = translate::CldDataSource::Get()->GetName();
    source->AddString("cld-version", cld_version);
    source->AddString("cld-data-source", cld_data_source);
  
    return source;
  }
  
  }  // namespace
  
  TranslateInternalsUI::TranslateInternalsUI(content::WebUI* web_ui)
      : WebUIController(web_ui) {
    web_ui->AddMessageHandler(new TranslateInternalsHandler);
  
    Profile* profile = Profile::FromWebUI(web_ui);
    content::WebUIDataSource::Add(profile, CreateTranslateInternalsHTMLSource());
  }
  