chrome/browser/chromeos/upgrade_detector_chromeos.h

   1 // Copyright (c) 2012 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
   8 #include "base/compiler_specific.h"
   9 #include "base/timer.h"
  10 #include "chrome/browser/upgrade_detector.h"
  11 #include "chromeos/dbus/update_engine_client.h"
  12
  13 template <typename T> struct DefaultSingletonTraits;
  14
  15 class UpgradeDetectorChromeos : public UpgradeDetector,
  16                                 public chromeos::UpdateEngineClient::Observer {
  17  public:
  18   virtual ~UpgradeDetectorChromeos();
  19
  20   static UpgradeDetectorChromeos* GetInstance();
  21
  22   // Initializes the object. Starts observing changes from the update
  23   // engine.
  24   void Init();
  25
  26   // Shuts down the object. Stops observing observe changes from the
  27   // update engine.
  28   void Shutdown();
  29
  30  private:
  31   friend struct DefaultSingletonTraits<UpgradeDetectorChromeos>;
  32
  33   UpgradeDetectorChromeos();
  34
  35   // chromeos::UpdateEngineClient::Observer implementation.
  36   virtual void UpdateStatusChanged(
  37       const chromeos::UpdateEngineClient::Status& status) OVERRIDE;
  38
  39   // The function that sends out a notification (after a certain time has
  40   // elapsed) that lets the rest of the UI know we should start notifying the
  41   // user that a new version is available.
  42   void NotifyOnUpgrade();
  43
  44   // After we detect an upgrade we start a recurring timer to see if enough time
  45   // has passed and we should start notifying the user.
  46   base::RepeatingTimer<UpgradeDetectorChromeos> upgrade_notification_timer_;
  47   bool initialized_;
  48 };
  49
  50 #endif  // CHROME_BROWSER_CHROMEOS_UPGRADE_DETECTOR_CHROMEOS_H_