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  57   // Returns true after calling UpgradeDetected if current install is outdated.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