android_webview/browser/net/aw_http_user_agent_settings.h

   1 // Copyright (c) 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 #ifndef ANDROID_WEBVIEW_BROWSER_NET_AW_HTTP_USER_AGENT_SETTINGS_H_
   6 #define ANDROID_WEBVIEW_BROWSER_NET_AW_HTTP_USER_AGENT_SETTINGS_H_
   7
   8 #include <string>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "net/url_request/http_user_agent_settings.h"
  13
  14 namespace android_webview {
  15
  16 // An implementation of |HttpUserAgentSettings| that provides HTTP header
  17 // Accept-Language value that tracks aw accept language.
  18 class AwHttpUserAgentSettings : public net::HttpUserAgentSettings {
  19  public:
  20   // Must be called on the UI thread.
  21   AwHttpUserAgentSettings();
  22   // Must be called on the IO thread.
  23   ~AwHttpUserAgentSettings() override;
  24
  25   // net::HttpUserAgentSettings implementation
  26   std::string GetAcceptLanguage() const override;
  27   std::string GetUserAgent() const override;
  28
  29  private:
  30   // Avoid re-processing by caching the last value from the locale and the
  31   // last result of processing via net::HttpUtil::GenerateAccept*Header().
  32   mutable std::string last_aw_accept_language_;
  33   mutable std::string last_http_accept_language_;
  34
  35   DISALLOW_COPY_AND_ASSIGN(AwHttpUserAgentSettings);
  36 };
  37
  38 }  // namespace android_webview
  39
  40 #endif  // ANDROID_WEBVIEW_BROWSER_NET_AW_HTTP_USER_AGENT_SETTINGS_H_
  41