| // 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. |
| |
| #ifndef CHROME_BROWSER_NETWORK_TIME_NAVIGATION_TIME_HELPER_H_ |
| #define CHROME_BROWSER_NETWORK_TIME_NAVIGATION_TIME_HELPER_H_ |
| |
| #include <map> |
| |
| #include "base/time/time.h" |
| #include "content/public/browser/notification_observer.h" |
| #include "content/public/browser/notification_registrar.h" |
| #include "content/public/browser/web_contents_user_data.h" |
| |
| namespace content { |
| class WebContents; |
| } |
| |
| // NavigationTimeHelper returns the navigation time in network time for |
| // given navigation entry. |
| class NavigationTimeHelper |
| : public content::NotificationObserver, |
| public content::WebContentsUserData<NavigationTimeHelper> { |
| public: |
| virtual ~NavigationTimeHelper(); |
| |
| base::Time GetNavigationTime(const content::NavigationEntry* entry); |
| |
| protected: |
| // Tests only. |
| NavigationTimeHelper(); |
| |
| // Return network time for given |local_time|. |
| virtual base::Time GetNetworkTime(base::Time local_time); |
| |
| private: |
| explicit NavigationTimeHelper(content::WebContents* web_contents); |
| friend class content::WebContentsUserData<NavigationTimeHelper>; |
| |
| // content::NotificationObserver implementation. |
| virtual void Observe(int type, |
| const content::NotificationSource& source, |
| const content::NotificationDetails& details) OVERRIDE; |
| |
| content::NotificationRegistrar registrar_; |
| |
| content::WebContents* web_contents_; |
| |
| // Map from navigation entries to the navigation times calculated for them. |
| struct NavigationTimeInfo { |
| NavigationTimeInfo(base::Time local_time, base::Time network_time) |
| : local_time(local_time), network_time(network_time) {} |
| base::Time local_time; |
| base::Time network_time; |
| }; |
| typedef std::map<const void*, NavigationTimeInfo> NavigationTimeCache; |
| NavigationTimeCache time_cache_; |
| |
| DISALLOW_COPY_AND_ASSIGN(NavigationTimeHelper); |
| }; |
| |
| #endif // CHROME_BROWSER_NETWORK_TIME_NAVIGATION_TIME_HELPER_H_ |