src/chrome/browser/sync/sessions/session_data_type_controller.h

   1 // Copyright 2014 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_SYNC_SESSIONS_SESSION_DATA_TYPE_CONTROLLER_H_
   6 #define CHROME_BROWSER_SYNC_SESSIONS_SESSION_DATA_TYPE_CONTROLLER_H_
   7
   8 #include "chrome/browser/sync/glue/local_device_info_provider.h"
   9 #include "components/sync_driver/ui_data_type_controller.h"
  10 #include "content/public/browser/notification_observer.h"
  11 #include "content/public/browser/notification_registrar.h"
  12
  13 class Profile;
  14
  15 namespace browser_sync {
  16
  17 class SyncedWindowDelegatesGetter;
  18
  19 // Overrides StartModels to avoid sync contention with sessions during
  20 // a session restore operation at startup and to wait for the local
  21 // device info to become available.
  22 class SessionDataTypeController : public sync_driver::UIDataTypeController,
  23                                   public content::NotificationObserver {
  24  public:
  25   SessionDataTypeController(sync_driver::SyncApiComponentFactory* factory,
  26                             Profile* profile,
  27                             SyncedWindowDelegatesGetter* synced_window_getter,
  28                             LocalDeviceInfoProvider* local_device);
  29
  30   // NotificationObserver interface.
  31   virtual void Observe(int type,
  32                        const content::NotificationSource& source,
  33                        const content::NotificationDetails& details) OVERRIDE;
  34
  35  protected:
  36   virtual ~SessionDataTypeController();
  37   virtual bool StartModels() OVERRIDE;
  38   virtual void StopModels() OVERRIDE;
  39
  40  private:
  41   bool IsWaiting();
  42   void MaybeCompleteLoading();
  43   void OnLocalDeviceInfoInitialized();
  44
  45   Profile* const profile_;
  46
  47   SyncedWindowDelegatesGetter* synced_window_getter_;
  48   content::NotificationRegistrar notification_registrar_;
  49
  50   LocalDeviceInfoProvider* const local_device_;
  51   scoped_ptr<LocalDeviceInfoProvider::Subscription> subscription_;
  52
  53   // Flags that indicate the reason for pending loading models.
  54   bool waiting_on_session_restore_;
  55   bool waiting_on_local_device_info_;
  56
  57   DISALLOW_COPY_AND_ASSIGN(SessionDataTypeController);
  58 };
  59
  60 }  // namespace browser_sync
  61
  62 #endif  // CHROME_BROWSER_SYNC_SESSIONS_SESSION_DATA_TYPE_CONTROLLER_H_
  63