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_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_HANDLE_H_
6#define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_HANDLE_H_
7
8#include "base/memory/ref_counted.h"
9#include "base/memory/scoped_ptr.h"
10#include "base/memory/weak_ptr.h"
11#include "content/browser/service_worker/service_worker_registration.h"
12#include "content/browser/service_worker/service_worker_version.h"
13#include "content/common/service_worker/service_worker_types.h"
14
15namespace content {
16
17class ServiceWorkerContextCore;
18class ServiceWorkerDispatcherHost;
19class ServiceWorkerVersion;
20
21// Roughly Corresponds to one ServiceWorkerRegistration object in the renderer
22// process (WebServiceWorkerRegistrationImpl).
23// Has references to the corresponding ServiceWorkerRegistration and
24// ServiceWorkerVersions (therefore they're guaranteed to be alive while this
25// handle is around).
26class ServiceWorkerRegistrationHandle
27    : public ServiceWorkerRegistration::Listener {
28 public:
29  CONTENT_EXPORT ServiceWorkerRegistrationHandle(
30      base::WeakPtr<ServiceWorkerContextCore> context,
31      ServiceWorkerDispatcherHost* dispatcher_host,
32      int provider_id,
33      ServiceWorkerRegistration* registration);
34  virtual ~ServiceWorkerRegistrationHandle();
35
36  ServiceWorkerRegistrationObjectInfo GetObjectInfo();
37  ServiceWorkerObjectInfo CreateServiceWorkerHandleAndPass(
38      ServiceWorkerVersion* version);
39
40  bool HasNoRefCount() const { return ref_count_ <= 0; }
41  void IncrementRefCount();
42  void DecrementRefCount();
43
44  int provider_id() const { return provider_id_; }
45  int handle_id() const { return handle_id_; }
46
47  ServiceWorkerRegistration* registration() { return registration_.get(); }
48
49 private:
50  // ServiceWorkerRegistration::Listener overrides.
51  virtual void OnVersionAttributesChanged(
52      ServiceWorkerRegistration* registration,
53      ChangedVersionAttributesMask changed_mask,
54      const ServiceWorkerRegistrationInfo& info) OVERRIDE;
55  virtual void OnRegistrationFailed(
56      ServiceWorkerRegistration* registration) OVERRIDE;
57  virtual void OnUpdateFound(
58      ServiceWorkerRegistration* registration) OVERRIDE;
59
60  // Sets the corresponding version field to the given version or if the given
61  // version is NULL, clears the field.
62  void SetVersionAttributes(
63      ServiceWorkerVersion* installing_version,
64      ServiceWorkerVersion* waiting_version,
65      ServiceWorkerVersion* active_version);
66
67  // Clears all version fields.
68  void ClearVersionAttributes();
69
70  base::WeakPtr<ServiceWorkerContextCore> context_;
71  ServiceWorkerDispatcherHost* dispatcher_host_;
72  const int provider_id_;
73  const int handle_id_;
74  int ref_count_;  // Created with 1.
75
76  scoped_refptr<ServiceWorkerRegistration> registration_;
77  scoped_refptr<ServiceWorkerVersion> installing_version_;
78  scoped_refptr<ServiceWorkerVersion> waiting_version_;
79  scoped_refptr<ServiceWorkerVersion> active_version_;
80
81  DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegistrationHandle);
82};
83
84}  // namespace content
85
86#endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_HANDLE_H_
87