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 // Represents an interprocess reference to ServiceWorkerHandle managed in the
  17 // browser process. The constructor and destructor sends a message to increment
  18 // or decrement the reference count to the browser process.
  19 class ServiceWorkerHandleReference {
  20  public:
  21   // Creates a new ServiceWorkerHandleReference and increments ref-count.
  22   static scoped_ptr<ServiceWorkerHandleReference> Create(
  23       const ServiceWorkerObjectInfo& info,
  24       ThreadSafeSender* sender);
  25
  26   // Creates a new ServiceWorkerHandleReference by adopting a ref-count.
  27   static scoped_ptr<ServiceWorkerHandleReference> Adopt(
  28       const ServiceWorkerObjectInfo& info,
  29       ThreadSafeSender* sender);
  30
  31   ~ServiceWorkerHandleReference();
  32
  33   const ServiceWorkerObjectInfo& info() const { return info_; }
  34   int handle_id() const { return info_.handle_id; }
  35   const GURL& url() const { return info_.url; }
  36   blink::WebServiceWorkerState state() const { return info_.state; }
  37   void set_state(blink::WebServiceWorkerState state) { info_.state = state; }
  38   int64 version_id() const { return info_.version_id; }
  39
  40  private:
  41   ServiceWorkerHandleReference(const ServiceWorkerObjectInfo& info,
  42                                ThreadSafeSender* sender,
  43                                bool increment_ref_in_ctor);
  44   ServiceWorkerObjectInfo info_;
  45   scoped_refptr<ThreadSafeSender> sender_;
  46   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerHandleReference);
  47 };
  48
  49 }  // namespace content
  50
  51 #endif  // CONTENT_CHILD_SERVICE_WORKER_SERVICE_WORKER_HANDLE_REFERENCE_H_