src/content/renderer/service_worker/embedded_worker_context_client.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_CHILD_SERVICE_WORKER_EMBEDDED_WORKER_CLIENT_H_
   6 #define CONTENT_CHILD_SERVICE_WORKER_EMBEDDED_WORKER_CLIENT_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/strings/string16.h"
  10 #include "ipc/ipc_listener.h"
  11 #include "third_party/WebKit/public/web/WebServiceWorkerContextClient.h"
  12 #include "url/gurl.h"
  13
  14 namespace base {
  15 class MessageLoopProxy;
  16 }
  17
  18 namespace content {
  19
  20 class ServiceWorkerScriptContext;
  21 class ThreadSafeSender;
  22
  23 // This class provides access to/from an embedded worker's WorkerGlobalScope.
  24 // All methods other than the constructor (it's created on the main thread)
  25 // are called on the worker thread.
  26 //
  27 // TODO(kinuko): Currently EW/SW separation is made a little hazily.
  28 // This should implement WebEmbeddedWorkerContextClient
  29 // or sort of it (which doesn't exist yet) rather than
  30 // WebServiceWorkerContextClient if we want to separate them more cleanly,
  31 // or ServiceWorkerScriptContext should be merged into this class
  32 // if we consider EW == SW script context.
  33 class EmbeddedWorkerContextClient
  34     : public blink::WebServiceWorkerContextClient {
  35  public:
  36   // Returns a thread-specific client instance.  This does NOT create a
  37   // new instance.
  38   static EmbeddedWorkerContextClient* ThreadSpecificInstance();
  39
  40   EmbeddedWorkerContextClient(int embedded_worker_id,
  41                               int64 service_worker_version_id,
  42                               const GURL& script_url);
  43
  44   virtual ~EmbeddedWorkerContextClient();
  45
  46   bool OnMessageReceived(const IPC::Message& msg);
  47
  48   void SendMessageToBrowser(const IPC::Message& message);
  49
  50   // WebServiceWorkerContextClient overrides.
  51   virtual void workerContextFailedToStart();
  52   virtual void workerContextStarted(blink::WebServiceWorkerContextProxy* proxy);
  53   virtual void workerContextDestroyed();
  54
  55   // TODO: Implement DevTools related method overrides.
  56
  57   int embedded_worker_id() const { return embedded_worker_id_; }
  58
  59  private:
  60   void OnSendMessageToWorker(int thread_id,
  61                              int embedded_worker_id,
  62                              const IPC::Message& message);
  63
  64   const int embedded_worker_id_;
  65   const int64 service_worker_version_id_;
  66   const GURL script_url_;
  67   scoped_refptr<ThreadSafeSender> sender_;
  68   scoped_refptr<base::MessageLoopProxy> main_thread_proxy_;
  69
  70   scoped_ptr<ServiceWorkerScriptContext> script_context_;
  71
  72   DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerContextClient);
  73 };
  74
  75 }  // namespace content
  76
  77 #endif  // CONTENT_CHILD_SERVICE_WORKER_EMBEDDED_WORKER_CLIENT_H_