chrome/browser/chromeos/upgrade_detector_chromeos.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_CHROMEOS_UPGRADE_DETECTOR_CHROMEOS_H_
   6 #define CHROME_BROWSER_CHROMEOS_UPGRADE_DETECTOR_CHROMEOS_H_
   7 #pragma once
   8
   9 #include "base/compiler_specific.h"
  10 #include "base/timer.h"
  11 #include "chrome/browser/chromeos/dbus/update_engine_client.h"
  12 #include "chrome/browser/upgrade_detector.h"
  13
  14 template <typename T> struct DefaultSingletonTraits;
  15
  16 class UpgradeDetectorChromeos : public UpgradeDetector,
  17                                 public chromeos::UpdateEngineClient::Observer {
  18  public:
  19   virtual ~UpgradeDetectorChromeos();
  20
  21   static UpgradeDetectorChromeos* GetInstance();
  22
  23   // Initializes the object. Starts observing changes from the update
  24   // engine.
  25   void Init();
  26
  27   // Shuts down the object. Stops observing observe changes from the
  28   // update engine.
  29   void Shutdown();
  30
  31  private:
  32   friend struct DefaultSingletonTraits<UpgradeDetectorChromeos>;
  33
  34   UpgradeDetectorChromeos();
  35
  36   // chromeos::UpdateEngineClient::Observer implementation.
  37   virtual void UpdateStatusChanged(
  38       const chromeos::UpdateEngineClient::Status& status) OVERRIDE;
  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   // After we detect an upgrade we start a recurring timer to see if enough time
  46   // has passed and we should start notifying the user.
  47   base::RepeatingTimer<UpgradeDetectorChromeos> upgrade_notification_timer_;
  48   bool initialized_;
  49 };
  50
  51 #endif  // CHROME_BROWSER_CHROMEOS_UPGRADE_DETECTOR_CHROMEOS_H_