ios/chrome/browser/net/ios_chrome_http_user_agent_settings.cc

   1 // Copyright 2015 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 "ios/chrome/browser/net/ios_chrome_http_user_agent_settings.h"
   6
   7 #include "base/prefs/pref_service.h"
   8 #include "ios/chrome/browser/pref_names.h"
   9 #include "ios/web/public/web_client.h"
  10 #include "ios/web/public/web_thread.h"
  11 #include "net/http/http_util.h"
  12
  13 IOSChromeHttpUserAgentSettings::IOSChromeHttpUserAgentSettings(
  14     PrefService* prefs) {
  15   DCHECK_CURRENTLY_ON_WEB_THREAD(web::WebThread::UI);
  16   pref_accept_language_.Init(ios::prefs::kAcceptLanguages, prefs);
  17   last_pref_accept_language_ = *pref_accept_language_;
  18   last_http_accept_language_ =
  19       net::HttpUtil::GenerateAcceptLanguageHeader(last_pref_accept_language_);
  20   pref_accept_language_.MoveToThread(
  21       web::WebThread::GetTaskRunnerForThread(web::WebThread::IO));
  22 }
  23
  24 IOSChromeHttpUserAgentSettings::~IOSChromeHttpUserAgentSettings() {
  25   DCHECK_CURRENTLY_ON_WEB_THREAD(web::WebThread::IO);
  26 }
  27
  28 void IOSChromeHttpUserAgentSettings::CleanupOnUIThread() {
  29   DCHECK_CURRENTLY_ON_WEB_THREAD(web::WebThread::UI);
  30   pref_accept_language_.Destroy();
  31 }
  32
  33 std::string IOSChromeHttpUserAgentSettings::GetAcceptLanguage() const {
  34   DCHECK_CURRENTLY_ON_WEB_THREAD(web::WebThread::IO);
  35   std::string new_pref_accept_language = *pref_accept_language_;
  36   if (new_pref_accept_language != last_pref_accept_language_) {
  37     last_http_accept_language_ =
  38         net::HttpUtil::GenerateAcceptLanguageHeader(new_pref_accept_language);
  39     last_pref_accept_language_ = new_pref_accept_language;
  40   }
  41   return last_http_accept_language_;
  42 }
  43
  44 std::string IOSChromeHttpUserAgentSettings::GetUserAgent() const {
  45   DCHECK_CURRENTLY_ON_WEB_THREAD(web::WebThread::IO);
  46   return web::GetWebClient()->GetUserAgent(false);
  47 }