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   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   void OnVersionAttributesChanged(
  52       ServiceWorkerRegistration* registration,
  53       ChangedVersionAttributesMask changed_mask,
  54       const ServiceWorkerRegistrationInfo& info) override;
  55   void OnRegistrationFailed(ServiceWorkerRegistration* registration) override;
  56   void OnUpdateFound(ServiceWorkerRegistration* registration) override;
  57
  58   // Sets the corresponding version field to the given version or if the given
  59   // version is NULL, clears the field.
  60   void SetVersionAttributes(
  61       ServiceWorkerVersion* installing_version,
  62       ServiceWorkerVersion* waiting_version,
  63       ServiceWorkerVersion* active_version);
  64
  65   // Clears all version fields.
  66   void ClearVersionAttributes();
  67
  68   base::WeakPtr<ServiceWorkerContextCore> context_;
  69   ServiceWorkerDispatcherHost* dispatcher_host_;
  70   const int provider_id_;
  71   const int handle_id_;
  72   int ref_count_;  // Created with 1.
  73
  74   scoped_refptr<ServiceWorkerRegistration> registration_;
  75   scoped_refptr<ServiceWorkerVersion> installing_version_;
  76   scoped_refptr<ServiceWorkerVersion> waiting_version_;
  77   scoped_refptr<ServiceWorkerVersion> active_version_;
  78
  79   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRegistrationHandle);
  80 };
  81
  82 }  // namespace content
  83
  84 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_REGISTRATION_HANDLE_H_