components/sync_driver/glue/ui_model_worker.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 COMPONENTS_SYNC_DRIVER_GLUE_UI_MODEL_WORKER_H_
   6 #define COMPONENTS_SYNC_DRIVER_GLUE_UI_MODEL_WORKER_H_
   7
   8 #include "base/callback.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/single_thread_task_runner.h"
  11 #include "base/synchronization/condition_variable.h"
  12 #include "base/synchronization/lock.h"
  13 #include "sync/internal_api/public/engine/model_safe_worker.h"
  14 #include "sync/internal_api/public/util/unrecoverable_error_info.h"
  15
  16 namespace browser_sync {
  17
  18 // A syncer::ModelSafeWorker for UI models (e.g. bookmarks) that
  19 // accepts work requests from the syncapi that need to be fulfilled
  20 // from the MessageLoop home to the native model.
  21 class UIModelWorker : public syncer::ModelSafeWorker {
  22  public:
  23   UIModelWorker(const scoped_refptr<base::SingleThreadTaskRunner>& ui_thread,
  24                 syncer::WorkerLoopDestructionObserver* observer);
  25
  26   // syncer::ModelSafeWorker implementation. Called on syncapi SyncerThread.
  27   void RegisterForLoopDestruction() override;
  28   syncer::ModelSafeGroup GetModelSafeGroup() override;
  29
  30  protected:
  31   syncer::SyncerError DoWorkAndWaitUntilDoneImpl(
  32       const syncer::WorkCallback& work) override;
  33
  34  private:
  35   ~UIModelWorker() override;
  36
  37   // A reference to the UI thread's task runner.
  38   const scoped_refptr<base::SingleThreadTaskRunner> ui_thread_;
  39
  40   DISALLOW_COPY_AND_ASSIGN(UIModelWorker);
  41 };
  42
  43 }  // namespace browser_sync
  44
  45 #endif  // COMPONENTS_SYNC_DRIVER_GLUE_UI_MODEL_WORKER_H_