content/child/service_worker/service_worker_handle_reference.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 CONTENT_CHILD_SERVICE_WORKER_SERVICE_WORKER_HANDLE_REFERENCE_H_
   6 #define CONTENT_CHILD_SERVICE_WORKER_SERVICE_WORKER_HANDLE_REFERENCE_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "content/common/service_worker/service_worker_types.h"
  11
  12 namespace content {
  13
  14 class ThreadSafeSender;
  15
  16 // Automatically increments and decrements ServiceWorkerHandle's ref-count
  17 // (in the browser side) in ctor and dtor.
  18 class ServiceWorkerHandleReference {
  19  public:
  20   // Creates a new ServiceWorkerHandleReference and increments ref-count.
  21   static scoped_ptr<ServiceWorkerHandleReference> Create(
  22       const ServiceWorkerObjectInfo& info,
  23       ThreadSafeSender* sender);
  24
  25   // Creates a new ServiceWorkerHandleReference by adopting a
  26   // ref-count. ServiceWorkerHandleReferences created this way must
  27   // have a matching
  28   // ServiceWorkerDispatcherHost::RegisterServiceWorkerHandle call on
  29   // the browser side.
  30   static scoped_ptr<ServiceWorkerHandleReference> Adopt(
  31       const ServiceWorkerObjectInfo& info,
  32       ThreadSafeSender* sender);
  33
  34   ~ServiceWorkerHandleReference();
  35
  36   const ServiceWorkerObjectInfo& info() const { return info_; }
  37   int handle_id() const { return info_.handle_id; }
  38   const GURL& url() const { return info_.url; }
  39   blink::WebServiceWorkerState state() const { return info_.state; }
  40   void set_state(blink::WebServiceWorkerState state) { info_.state = state; }
  41   int64 version_id() const { return info_.version_id; }
  42
  43  private:
  44   ServiceWorkerHandleReference(const ServiceWorkerObjectInfo& info,
  45                                ThreadSafeSender* sender,
  46                                bool increment_ref_in_ctor);
  47   ServiceWorkerObjectInfo info_;
  48   scoped_refptr<ThreadSafeSender> sender_;
  49   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerHandleReference);
  50 };
  51
  52 }  // namespace content
  53
  54 #endif  // CONTENT_CHILD_SERVICE_WORKER_SERVICE_WORKER_HANDLE_REFERENCE_H_