content/browser/background_sync/background_sync_proxy.h

// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_PROXY_H_
#define CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_PROXY_H_

#include <memory>
#include <set>

#include "base/callback.h"
#include "base/memory/weak_ptr.h"
#include "base/time/time.h"
#include "content/common/content_export.h"
#include "content/public/browser/browser_thread.h"
#include "third_party/blink/public/mojom/background_sync/background_sync.mojom.h"
#include "url/origin.h"

namespace content {

class ServiceWorkerContextWrapper;

// This class is used to take messages from BackgroundSyncManager on the
// service worker core thread and pass them on BackgroundSyncController on the
// UI thread through its Core class which lives on the UI thread. This is owned
// by the BackgroundSyncManager.
//
// TODO(crbug.com/824858): This class should be unnecessary after the service
// worker core thread moves to the UI thread.
class CONTENT_EXPORT BackgroundSyncProxy {
 public:
  explicit BackgroundSyncProxy(
      scoped_refptr<ServiceWorkerContextWrapper> service_worker_context);
  virtual ~BackgroundSyncProxy();

  virtual void ScheduleDelayedProcessing(
      blink::mojom::BackgroundSyncType sync_type,
      base::TimeDelta delay,
      base::OnceClosure delayed_task);
  virtual void CancelDelayedProcessing(
      blink::mojom::BackgroundSyncType sync_type);
  void SendSuspendedPeriodicSyncOrigins(
      std::set<url::Origin> suspended_origins);
  void SendRegisteredPeriodicSyncOrigins(
      std::set<url::Origin> registered_origins);
  void AddToTrackedOrigins(url::Origin origin);
  void RemoveFromTrackedOrigins(url::Origin origin);

 private:
  // Constructed on the service worker core thread, lives and dies on the UI
  // thread.
  class Core;

  std::unique_ptr<Core, BrowserThread::DeleteOnUIThread> ui_core_;
  base::WeakPtr<Core> ui_core_weak_ptr_;
  base::WeakPtrFactory<BackgroundSyncProxy> weak_ptr_factory_{this};

  DISALLOW_COPY_AND_ASSIGN(BackgroundSyncProxy);
};

}  // namespace content

#endif  // CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_PROXY_H_