1 // Copyright (c) 2011 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 CHROME_BROWSER_UPGRADE_DETECTOR_IMPL_H_ 6 #define CHROME_BROWSER_UPGRADE_DETECTOR_IMPL_H_ 7 8 #include "base/memory/weak_ptr.h" 9 #include "base/timer/timer.h" 10 #include "chrome/browser/net/network_time_tracker.h" 11 #include "chrome/browser/upgrade_detector.h" 12 13 template <typename T> struct DefaultSingletonTraits; 14 15 class UpgradeDetectorImpl : public UpgradeDetector { 16 public: 17 virtual ~UpgradeDetectorImpl(); 18 19 // Returns the singleton instance. 20 static UpgradeDetectorImpl* GetInstance(); 21 22 private: 23 friend struct DefaultSingletonTraits<UpgradeDetectorImpl>; 24 25 UpgradeDetectorImpl(); 26 27 // Start the timer that will call |CheckForUpgrade()|. 28 void StartTimerForUpgradeCheck(); 29 30 // Launches a task on the file thread to check if we have the latest version. 31 void CheckForUpgrade(); 32 33 // Sends out a notification and starts a one shot timer to wait until 34 // notifying the user. 35 void UpgradeDetected(UpgradeAvailable upgrade_available); 36 37 // Returns true after calling UpgradeDetected if current install is outdated. 38 bool DetectOutdatedInstall(); 39 40 // The function that sends out a notification (after a certain time has 41 // elapsed) that lets the rest of the UI know we should start notifying the 42 // user that a new version is available. 43 void NotifyOnUpgrade(); 44 45 // Called on the FILE thread to detect an upgrade. Calls back UpgradeDetected 46 // on the UI thread if so. Although it looks weird, this needs to be a static 47 // method receiving a WeakPtr<> to this object so that we can interrupt 48 // the UpgradeDetected callback before it runs. Having this method non-static 49 // and using |this| directly wouldn't be thread safe. And keeping it as a 50 // non-class function would prevent it from calling UpgradeDetected. 51 static void DetectUpgradeTask( 52 base::WeakPtr<UpgradeDetectorImpl> upgrade_detector); 53 54 // We periodically check to see if Chrome has been upgraded. 55 base::RepeatingTimer<UpgradeDetectorImpl> detect_upgrade_timer_; 56 57 // After we detect an upgrade we start a recurring timer to see if enough time 58 // has passed and we should start notifying the user. 59 base::RepeatingTimer<UpgradeDetectorImpl> upgrade_notification_timer_; 60 61 // We use this factory to create callback tasks for UpgradeDetected. We pass 62 // the task to the actual upgrade detection code, which is in 63 // DetectUpgradeTask. 64 base::WeakPtrFactory<UpgradeDetectorImpl> weak_factory_; 65 66 // True if this build is a dev or canary channel build. 67 bool is_unstable_channel_; 68 69 // The date the binaries were built. 70 base::Time build_date_; 71 72 // Tracker for getting network time. 73 NetworkTimeTracker network_time_tracker_; 74 75 DISALLOW_COPY_AND_ASSIGN(UpgradeDetectorImpl); 76 }; 77 78 79 #endif // CHROME_BROWSER_UPGRADE_DETECTOR_IMPL_H_ 80
