src/content/browser/service_worker/service_worker_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_HANDLE_H_
   6 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_HANDLE_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "content/browser/service_worker/service_worker_version.h"
  13 #include "content/common/content_export.h"
  14 #include "content/common/service_worker/service_worker_types.h"
  15
  16 namespace IPC {
  17 class Sender;
  18 }
  19
  20 namespace content {
  21
  22 class ServiceWorkerContextCore;
  23 class ServiceWorkerRegistration;
  24
  25 // Roughly corresponds to one ServiceWorker object in the renderer process
  26 // (WebServiceWorkerImpl).
  27 // Has references to the corresponding ServiceWorkerVersion and
  28 // ServiceWorkerRegistration (therefore they're guaranteed to be alive while
  29 // this handle is around).
  30 class CONTENT_EXPORT ServiceWorkerHandle
  31     : public ServiceWorkerVersion::Listener {
  32  public:
  33   // Creates a handle for a live version. The version's corresponding
  34   // registration must be also alive.
  35   // This may return NULL if |context|.get() or |version| is NULL.
  36   // |sender| and |thread_id| will be used to send messages to the
  37   // corresponding WebServiceWorkerImpl (which should live on |thread_id|
  38   // in the child process).
  39   static scoped_ptr<ServiceWorkerHandle> Create(
  40       base::WeakPtr<ServiceWorkerContextCore> context,
  41       IPC::Sender* sender,
  42       int thread_id,
  43       ServiceWorkerVersion* version);
  44
  45   ServiceWorkerHandle(base::WeakPtr<ServiceWorkerContextCore> context,
  46                       IPC::Sender* sender,
  47                       int thread_id,
  48                       ServiceWorkerRegistration* registration,
  49                       ServiceWorkerVersion* version);
  50   virtual ~ServiceWorkerHandle();
  51
  52   // ServiceWorkerVersion::Listener overrides.
  53   virtual void OnWorkerStarted(ServiceWorkerVersion* version) OVERRIDE;
  54   virtual void OnWorkerStopped(ServiceWorkerVersion* version) OVERRIDE;
  55   virtual void OnErrorReported(ServiceWorkerVersion* version,
  56                                const base::string16& error_message,
  57                                int line_number,
  58                                int column_number,
  59                                const GURL& source_url) OVERRIDE;
  60   virtual void OnReportConsoleMessage(ServiceWorkerVersion* version,
  61                                       int source_identifier,
  62                                       int message_level,
  63                                       const base::string16& message,
  64                                       int line_number,
  65                                       const GURL& source_url) OVERRIDE;
  66   virtual void OnVersionStateChanged(ServiceWorkerVersion* version) OVERRIDE;
  67
  68   ServiceWorkerObjectInfo GetObjectInfo();
  69
  70   ServiceWorkerRegistration* registration() { return registration_.get(); }
  71   ServiceWorkerVersion* version() { return version_.get(); }
  72   int handle_id() const { return handle_id_; }
  73
  74   bool HasNoRefCount() const { return ref_count_ <= 0; }
  75   void IncrementRefCount();
  76   void DecrementRefCount();
  77
  78  private:
  79   base::WeakPtr<ServiceWorkerContextCore> context_;
  80   IPC::Sender* sender_;  // Not owned, it should always outlive this.
  81   const int thread_id_;
  82   const int handle_id_;
  83   int ref_count_;  // Created with 1.
  84   scoped_refptr<ServiceWorkerRegistration> registration_;
  85   scoped_refptr<ServiceWorkerVersion> version_;
  86
  87   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerHandle);
  88 };
  89
  90 }  // namespace content
  91
  92 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_HANDLE_H_