src/content/browser/service_worker/service_worker_registration_handle.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_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
  15 namespace content {
  16
  17 class ServiceWorkerContextCore;
  18 class ServiceWorkerDispatcherHost;
  19 class 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).
  26 class 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   bool HasNoRefCount() const { return ref_count_ <= 0; }
  37   void IncrementRefCount();
  38   void DecrementRefCount();
  39
  40   int provider_id() const { return provider_id_; }
  41   int handle_id() const { return handle_id_; }
  42
  43   ServiceWorkerRegistration* registration() { return registration_.get(); }
  44
  45  private:
  46   // ServiceWorkerRegistration::Listener overrides.
  47   virtual void OnVersionAttributesChanged(
  48       ServiceWorkerRegistration* registration,
  49       ChangedVersionAttributesMask changed_mask,
  50       const ServiceWorkerRegistrationInfo& info) OVERRIDE;
  51   virtual void OnRegistrationFailed(
  52       ServiceWorkerRegistration* registration) OVERRIDE;
  53
  54   // Sets the corresponding version field to the given version or if the given
  55   // version is NULL, clears the field.
  56   void SetVersionAttributes(
  57       ServiceWorkerVersion* installing_version,
  58       ServiceWorkerVersion* waiting_version,
  59       ServiceWorkerVersion* active_version);
  60
  61   // Clears all version fields.
  62   void ClearVersionAttributes();
  63
  64   ServiceWorkerObjectInfo CreateServiceWorkerHandleAndPass(
  65       ServiceWorkerVersion* version);
  66
  67   base::WeakPtr<ServiceWorkerContextCore> context_;
  68   ServiceWorkerDispatcherHost* dispatcher_host_;
  69   const int provider_id_;
  70   const int handle_id_;
  71   int ref_count_;  // Created with 1.
  72
  73   scoped_refptr<ServiceWorkerRegistration> registration_;
  74   scoped_refptr<ServiceWorkerVersion> installing_version_;
  75   scoped_refptr<ServiceWorkerVersion> waiting_version_;
  76   scoped_refptr<ServiceWorkerVersion> active_version_;
  77
  78   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegistrationHandle);
  79 };
  80
  81 }  // namespace content
  82
  83 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_HANDLE_H_