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_H_ 6 #define CHROME_BROWSER_UPGRADE_DETECTOR_H_ 7 #pragma once 8 9 #include "base/timer.h" 10 11 template <typename T> struct DefaultSingletonTraits; 12 class PrefService; 13 14 /////////////////////////////////////////////////////////////////////////////// 15 // UpgradeDetector 16 // 17 // This class is a singleton class that monitors when an upgrade happens in the 18 // background. We basically ask Omaha what it thinks the latest version is and 19 // if our version is lower we send out a notification upon: 20 // a) Detecting an upgrade and... 21 // b) When we think the user should be notified about the upgrade. 22 // The latter happens much later, since we don't want to be too annoying. 23 // 24 class UpgradeDetector { 25 public: 26 // The Homeland Security Upgrade Advisory System. 27 enum UpgradeNotificationAnnoyanceLevel { 28 UPGRADE_ANNOYANCE_NONE = 0, // What? Me worry? 29 UPGRADE_ANNOYANCE_LOW, // Green. 30 UPGRADE_ANNOYANCE_ELEVATED, // Yellow. 31 UPGRADE_ANNOYANCE_HIGH, // Red. 32 UPGRADE_ANNOYANCE_SEVERE, // Orange. 33 }; 34 35 // Returns the singleton instance. 36 static UpgradeDetector* GetInstance(); 37 38 ~UpgradeDetector(); 39 40 static void RegisterPrefs(PrefService* prefs); 41 42 bool notify_upgrade() { return notify_upgrade_; } 43 44 UpgradeNotificationAnnoyanceLevel upgrade_notification_stage() const { 45 return upgrade_notification_stage_; 46 } 47 48 private: 49 friend struct DefaultSingletonTraits<UpgradeDetector>; 50 51 UpgradeDetector(); 52 53 // Launches a task on the file thread to check if we have the latest version. 54 void CheckForUpgrade(); 55 56 // Sends out a notification and starts a one shot timer to wait until 57 // notifying the user. 58 void UpgradeDetected(); 59 60 // The function that sends out a notification (after a certain time has 61 // elapsed) that lets the rest of the UI know we should start notifying the 62 // user that a new version is available. 63 void NotifyOnUpgrade(); 64 65 // We periodically check to see if Chrome has been upgraded. 66 base::RepeatingTimer<UpgradeDetector> detect_upgrade_timer_; 67 68 // After we detect an upgrade we start a recurring timer to see if enough time 69 // has passed and we should start notifying the user. 70 base::RepeatingTimer<UpgradeDetector> upgrade_notification_timer_; 71 72 // We use this factory to create callback tasks for UpgradeDetected. We pass 73 // the task to the actual upgrade detection code, which is in 74 // DetectUpgradeTask. 75 ScopedRunnableMethodFactory<UpgradeDetector> method_factory_; 76 77 // When the upgrade was detected. 78 base::Time upgrade_detected_time_; 79 80 // Whether this build is a dev channel build or not. 81 bool is_dev_channel_; 82 83 // The stage at which the annoyance level for upgrade notifications is at. 84 UpgradeNotificationAnnoyanceLevel upgrade_notification_stage_; 85 86 // Whether we have waited long enough after detecting an upgrade (to see 87 // is we should start nagging about upgrading). 88 bool notify_upgrade_; 89 90 DISALLOW_COPY_AND_ASSIGN(UpgradeDetector); 91 }; 92 93 #endif // CHROME_BROWSER_UPGRADE_DETECTOR_H_ 94
