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/memory/weak_ptr.h"
  10 #include "base/timer/timer.h"
  11 #include "chrome/browser/upgrade_detector.h"
  12 #include "chromeos/dbus/update_engine_client.h"
  13
  14 template <typename T> struct DefaultSingletonTraits;
  15
  16 class UpgradeDetectorChromeos : public UpgradeDetector,
  17                                 public chromeos::UpdateEngineClient::Observer {
  18  public:
  19   ~UpgradeDetectorChromeos() override;
  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   class ChannelsRequester;
  34
  35   UpgradeDetectorChromeos();
  36
  37   // chromeos::UpdateEngineClient::Observer implementation.
  38   void UpdateStatusChanged(
  39       const chromeos::UpdateEngineClient::Status& status) override;
  40
  41   // The function that sends out a notification (after a certain time has
  42   // elapsed) that lets the rest of the UI know we should start notifying the
  43   // user that a new version is available.
  44   void NotifyOnUpgrade();
  45
  46   void OnChannelsReceived(const std::string& current_channel,
  47                           const std::string& target_channel);
  48
  49   // After we detect an upgrade we start a recurring timer to see if enough time
  50   // has passed and we should start notifying the user.
  51   base::RepeatingTimer<UpgradeDetectorChromeos> upgrade_notification_timer_;
  52   bool initialized_;
  53   base::Time upgrade_detected_time_;
  54
  55   scoped_ptr<ChannelsRequester> channels_requester_;
  56
  57   base::WeakPtrFactory<UpgradeDetectorChromeos> weak_factory_;
  58
  59   DISALLOW_COPY_AND_ASSIGN(UpgradeDetectorChromeos);
  60 };
  61
  62 #endif  // CHROME_BROWSER_CHROMEOS_UPGRADE_DETECTOR_CHROMEOS_H_