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 "chrome/browser/network_time/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  37   // Returns true after calling UpgradeDetected if current install is outdated.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_