chrome/browser/upgrade_detector_impl.h

   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   ~UpgradeDetectorImpl() override;
  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   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  58   // Returns true after calling UpgradeDetected if current install is outdated.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_