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 "base/version.h" 11 #include "chrome/browser/metrics/variations/variations_service.h" 12 #include "chrome/browser/upgrade_detector.h" 13 14 template <typename T> struct DefaultSingletonTraits; 15 16 class UpgradeDetectorImpl : 17 public UpgradeDetector, 18 public chrome_variations::VariationsService::Observer { 19 public: 20 virtual ~UpgradeDetectorImpl(); 21 22 // Returns the currently installed Chrome version, which may be newer than the 23 // one currently running. Not supported on Android, iOS or ChromeOS. Must be 24 // run on a thread where I/O operations are allowed (e.g. FILE thread). 25 static base::Version GetCurrentlyInstalledVersion(); 26 27 // Returns the singleton instance. 28 static UpgradeDetectorImpl* GetInstance(); 29 30 protected: 31 UpgradeDetectorImpl(); 32 33 // chrome_variations::VariationsService::Observer: 34 virtual void OnExperimentChangesDetected(Severity severity) OVERRIDE; 35 36 // Trigger an "on upgrade" notification based on the specified |time_passed| 37 // interval. Exposed as protected for testing. 38 void NotifyOnUpgradeWithTimePassed(base::TimeDelta time_passed); 39 40 private: 41 friend struct DefaultSingletonTraits<UpgradeDetectorImpl>; 42 43 // Start the timer that will call |CheckForUpgrade()|. 44 void StartTimerForUpgradeCheck(); 45 46 // Launches a task on the file thread to check if we have the latest version. 47 void CheckForUpgrade(); 48 49 // Starts the upgrade notification timer that will check periodically whether 50 // enough time has elapsed to update the severity (which maps to visual 51 // badging) of the notification. 52 void StartUpgradeNotificationTimer(); 53 54 // Sends out a notification and starts a one shot timer to wait until 55 // notifying the user. 56 void UpgradeDetected(UpgradeAvailable upgrade_available); 57 58 // Returns true after calling UpgradeDetected if current install is outdated. 59 bool DetectOutdatedInstall(); 60 61 // The function that sends out a notification (after a certain time has 62 // elapsed) that lets the rest of the UI know we should start notifying the 63 // user that a new version is available. 64 void NotifyOnUpgrade(); 65 66 // Called on the FILE thread to detect an upgrade. Calls back UpgradeDetected 67 // on the UI thread if so. Although it looks weird, this needs to be a static 68 // method receiving a WeakPtr<> to this object so that we can interrupt 69 // the UpgradeDetected callback before it runs. Having this method non-static 70 // and using |this| directly wouldn't be thread safe. And keeping it as a 71 // non-class function would prevent it from calling UpgradeDetected. 72 static void DetectUpgradeTask( 73 base::WeakPtr<UpgradeDetectorImpl> upgrade_detector); 74 75 // We periodically check to see if Chrome has been upgraded. 76 base::RepeatingTimer<UpgradeDetectorImpl> detect_upgrade_timer_; 77 78 // After we detect an upgrade we start a recurring timer to see if enough time 79 // has passed and we should start notifying the user. 80 base::RepeatingTimer<UpgradeDetectorImpl> upgrade_notification_timer_; 81 82 // True if this build is a dev or canary channel build. 83 bool is_unstable_channel_; 84 85 // True if auto update is turned on. 86 bool is_auto_update_enabled_; 87 88 // When the upgrade was detected - either a software update or a variations 89 // update, whichever happened first. 90 base::TimeTicks upgrade_detected_time_; 91 92 // The date the binaries were built. 93 base::Time build_date_; 94 95 // We use this factory to create callback tasks for UpgradeDetected. We pass 96 // the task to the actual upgrade detection code, which is in 97 // DetectUpgradeTask. 98 base::WeakPtrFactory<UpgradeDetectorImpl> weak_factory_; 99 100 DISALLOW_COPY_AND_ASSIGN(UpgradeDetectorImpl); 101 }; 102 103 104 #endif // CHROME_BROWSER_UPGRADE_DETECTOR_IMPL_H_ 105
