// Copyright (c) 2011 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_UPGRADE_DETECTOR_IMPL_H_ #define CHROME_BROWSER_UPGRADE_DETECTOR_IMPL_H_ #include "base/memory/weak_ptr.h" #include "base/timer/timer.h" #include "chrome/browser/network_time/network_time_tracker.h" #include "chrome/browser/upgrade_detector.h" template <typename T> struct DefaultSingletonTraits; class UpgradeDetectorImpl : public UpgradeDetector { public: virtual ~UpgradeDetectorImpl(); // Returns the singleton instance. static UpgradeDetectorImpl* GetInstance(); private: friend struct DefaultSingletonTraits<UpgradeDetectorImpl>; UpgradeDetectorImpl(); // Start the timer that will call |CheckForUpgrade()|. void StartTimerForUpgradeCheck(); // Launches a task on the file thread to check if we have the latest version. void CheckForUpgrade(); // Sends out a notification and starts a one shot timer to wait until // notifying the user. void UpgradeDetected(UpgradeAvailable upgrade_available); // Returns true after calling UpgradeDetected if current install is outdated. bool DetectOutdatedInstall(); // The function that sends out a notification (after a certain time has // elapsed) that lets the rest of the UI know we should start notifying the // user that a new version is available. void NotifyOnUpgrade(); // Called on the FILE thread to detect an upgrade. Calls back UpgradeDetected // on the UI thread if so. Although it looks weird, this needs to be a static // method receiving a WeakPtr<> to this object so that we can interrupt // the UpgradeDetected callback before it runs. Having this method non-static // and using |this| directly wouldn't be thread safe. And keeping it as a // non-class function would prevent it from calling UpgradeDetected. static void DetectUpgradeTask( base::WeakPtr<UpgradeDetectorImpl> upgrade_detector); // We periodically check to see if Chrome has been upgraded. base::RepeatingTimer<UpgradeDetectorImpl> detect_upgrade_timer_; // After we detect an upgrade we start a recurring timer to see if enough time // has passed and we should start notifying the user. base::RepeatingTimer<UpgradeDetectorImpl> upgrade_notification_timer_; // We use this factory to create callback tasks for UpgradeDetected. We pass // the task to the actual upgrade detection code, which is in // DetectUpgradeTask. base::WeakPtrFactory<UpgradeDetectorImpl> weak_factory_; // True if this build is a dev or canary channel build. bool is_unstable_channel_; // True if auto update is turned on. bool is_auto_update_enabled_; // The date the binaries were built. base::Time build_date_; // Tracker for getting network time. NetworkTimeTracker network_time_tracker_; DISALLOW_COPY_AND_ASSIGN(UpgradeDetectorImpl); }; #endif // CHROME_BROWSER_UPGRADE_DETECTOR_IMPL_H_