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 namespace base {
  15 template <typename T>
  16 struct DefaultSingletonTraits;
  17 }  // namespace base
  18
  19 class UpgradeDetectorChromeos : public UpgradeDetector,
  20                                 public chromeos::UpdateEngineClient::Observer {
  21  public:
  22   ~UpgradeDetectorChromeos() override;
  23
  24   static UpgradeDetectorChromeos* GetInstance();
  25
  26   // Initializes the object. Starts observing changes from the update
  27   // engine.
  28   void Init();
  29
  30   // Shuts down the object. Stops observing observe changes from the
  31   // update engine.
  32   void Shutdown();
  33
  34  private:
  35   friend struct base::DefaultSingletonTraits<UpgradeDetectorChromeos>;
  36   class ChannelsRequester;
  37
  38   UpgradeDetectorChromeos();
  39
  40   // chromeos::UpdateEngineClient::Observer implementation.
  41   void UpdateStatusChanged(
  42       const chromeos::UpdateEngineClient::Status& status) override;
  43
  44   // The function that sends out a notification (after a certain time has
  45   // elapsed) that lets the rest of the UI know we should start notifying the
  46   // user that a new version is available.
  47   void NotifyOnUpgrade();
  48
  49   void OnChannelsReceived(const std::string& current_channel,
  50                           const std::string& target_channel);
  51
  52   // After we detect an upgrade we start a recurring timer to see if enough time
  53   // has passed and we should start notifying the user.
  54   base::RepeatingTimer<UpgradeDetectorChromeos> upgrade_notification_timer_;
  55   bool initialized_;
  56   base::Time upgrade_detected_time_;
  57
  58   scoped_ptr<ChannelsRequester> channels_requester_;
  59
  60   base::WeakPtrFactory<UpgradeDetectorChromeos> weak_factory_;
  61
  62   DISALLOW_COPY_AND_ASSIGN(UpgradeDetectorChromeos);
  63 };
  64
  65 #endif  // CHROME_BROWSER_CHROMEOS_UPGRADE_DETECTOR_CHROMEOS_H_