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       base::WeakPtr<ServiceWorkerProviderHost> provider_host,
  32       ServiceWorkerRegistration* registration);
  33   virtual ~ServiceWorkerRegistrationHandle();
  34
  35   ServiceWorkerRegistrationObjectInfo GetObjectInfo();
  36
  37   bool HasNoRefCount() const { return ref_count_ <= 0; }
  38   void IncrementRefCount();
  39   void DecrementRefCount();
  40
  41   int provider_id() const { return provider_id_; }
  42   int handle_id() const { return handle_id_; }
  43
  44   ServiceWorkerRegistration* registration() { return registration_.get(); }
  45
  46  private:
  47   // ServiceWorkerRegistration::Listener overrides.
  48   void OnVersionAttributesChanged(
  49       ServiceWorkerRegistration* registration,
  50       ChangedVersionAttributesMask changed_mask,
  51       const ServiceWorkerRegistrationInfo& info) override;
  52   void OnRegistrationFailed(ServiceWorkerRegistration* registration) override;
  53   void OnUpdateFound(ServiceWorkerRegistration* registration) override;
  54
  55   // Sets the corresponding version field to the given version or if the given
  56   // version is nullptr, clears the field.
  57   void SetVersionAttributes(
  58       ChangedVersionAttributesMask changed_mask,
  59       ServiceWorkerVersion* installing_version,
  60       ServiceWorkerVersion* waiting_version,
  61       ServiceWorkerVersion* active_version);
  62
  63   base::WeakPtr<ServiceWorkerContextCore> context_;
  64   base::WeakPtr<ServiceWorkerProviderHost> provider_host_;
  65   const int provider_id_;
  66   const int handle_id_;
  67   int ref_count_;  // Created with 1.
  68
  69   scoped_refptr<ServiceWorkerRegistration> registration_;
  70
  71   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegistrationHandle);
  72 };
  73
  74 }  // namespace content
  75
  76 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_HANDLE_H_