src/content/browser/service_worker/service_worker_provider_host.h

   1 // Copyright 2013 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_PROVIDER_HOST_H_
   6 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_PROVIDER_HOST_H_
   7
   8 #include <set>
   9 #include <vector>
  10
  11 #include "base/memory/ref_counted.h"
  12 #include "base/memory/weak_ptr.h"
  13 #include "content/common/content_export.h"
  14 #include "webkit/common/resource_type.h"
  15
  16 namespace IPC {
  17 class Sender;
  18 }
  19
  20 namespace content {
  21
  22 class ServiceWorkerContextCore;
  23 class ServiceWorkerDispatcherHost;
  24 class ServiceWorkerRequestHandler;
  25 class ServiceWorkerVersion;
  26
  27 // This class is the browser-process representation of a serice worker
  28 // provider. There is a provider per document and the lifetime of this
  29 // object is tied to the lifetime of its document in the renderer process.
  30 // This class holds service worker state that is scoped to an individual
  31 // document.
  32 //
  33 // Note this class can also host a running service worker, in which
  34 // case it will observe resource loads made directly by the service worker.
  35 class CONTENT_EXPORT ServiceWorkerProviderHost
  36     : public base::SupportsWeakPtr<ServiceWorkerProviderHost> {
  37  public:
  38   ServiceWorkerProviderHost(int process_id,
  39                             int provider_id,
  40                             base::WeakPtr<ServiceWorkerContextCore> context,
  41                             ServiceWorkerDispatcherHost* dispatcher_host);
  42   ~ServiceWorkerProviderHost();
  43
  44   int process_id() const { return process_id_; }
  45   int provider_id() const { return provider_id_; }
  46
  47   bool IsHostToRunningServiceWorker() {
  48     return running_hosted_version_ != NULL;
  49   }
  50
  51   // The service worker version that corresponds with
  52   // navigator.serviceWorker.active for our document.
  53   ServiceWorkerVersion* active_version() const {
  54     return active_version_.get();
  55   }
  56
  57   // The service worker version that corresponds with
  58   // navigate.serviceWorker.pending for our document.
  59   ServiceWorkerVersion* pending_version() const {
  60     return pending_version_.get();
  61   }
  62
  63   // The running version, if any, that this provider is providing resource
  64   // loads for.
  65   ServiceWorkerVersion* running_hosted_version() const {
  66     return running_hosted_version_.get();
  67   }
  68
  69   void set_document_url(const GURL& url) { document_url_ = url; }
  70   const GURL& document_url() const { return document_url_; }
  71
  72   // Associate |version| to this provider as its '.active' or '.pending'
  73   // version.
  74   // Giving NULL to this method will unset the corresponding field.
  75   void SetActiveVersion(ServiceWorkerVersion* version);
  76   void SetPendingVersion(ServiceWorkerVersion* version);
  77
  78   // Returns false if the version is not in the expected STARTING in our
  79   // our process state. That would be indicative of a bad IPC message.
  80   bool SetHostedVersionId(int64 versions_id);
  81
  82   // Returns a handler for a request, the handler may return NULL if
  83   // the request doesn't require special handling.
  84   scoped_ptr<ServiceWorkerRequestHandler> CreateRequestHandler(
  85       ResourceType::Type resource_type);
  86
  87   // Dispatches message event to the document.
  88   void PostMessage(const base::string16& message,
  89                    const std::vector<int>& sent_message_port_ids);
  90
  91  private:
  92   const int process_id_;
  93   const int provider_id_;
  94   GURL document_url_;
  95   scoped_refptr<ServiceWorkerVersion> active_version_;
  96   scoped_refptr<ServiceWorkerVersion> pending_version_;
  97   scoped_refptr<ServiceWorkerVersion> running_hosted_version_;
  98   base::WeakPtr<ServiceWorkerContextCore> context_;
  99   ServiceWorkerDispatcherHost* dispatcher_host_;
 100
 101   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerProviderHost);
 102 };
 103
 104 }  // namespace content
 105
 106 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_PROVIDER_HOST_H_