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/memory/weak_ptr.h"
  10 #include "base/strings/string16.h"
  11 #include "ipc/ipc_listener.h"
  12 #include "third_party/WebKit/public/web/WebServiceWorkerContextClient.h"
  13 #include "url/gurl.h"
  14
  15 namespace base {
  16 class MessageLoopProxy;
  17 class TaskRunner;
  18 }
  19
  20 namespace content {
  21
  22 class ServiceWorkerScriptContext;
  23 class ThreadSafeSender;
  24
  25 // This class provides access to/from an embedded worker's WorkerGlobalScope.
  26 // All methods other than the constructor (it's created on the main thread)
  27 // are called on the worker thread.
  28 //
  29 // TODO(kinuko): Currently EW/SW separation is made a little hazily.
  30 // This should implement WebEmbeddedWorkerContextClient
  31 // or sort of it (which doesn't exist yet) rather than
  32 // WebServiceWorkerContextClient if we want to separate them more cleanly,
  33 // or ServiceWorkerScriptContext should be merged into this class
  34 // if we consider EW == SW script context.
  35 class EmbeddedWorkerContextClient
  36     : public blink::WebServiceWorkerContextClient {
  37  public:
  38   // Returns a thread-specific client instance.  This does NOT create a
  39   // new instance.
  40   static EmbeddedWorkerContextClient* ThreadSpecificInstance();
  41
  42   EmbeddedWorkerContextClient(int embedded_worker_id,
  43                               int64 service_worker_version_id,
  44                               const GURL& script_url);
  45
  46   virtual ~EmbeddedWorkerContextClient();
  47
  48   bool OnMessageReceived(const IPC::Message& msg);
  49
  50   void SendMessageToBrowser(int request_id, const IPC::Message& message);
  51
  52   // WebServiceWorkerContextClient overrides.
  53   virtual void workerContextFailedToStart();
  54   virtual void workerContextStarted(blink::WebServiceWorkerContextProxy* proxy);
  55   virtual void workerContextDestroyed();
  56
  57   // TODO: Implement DevTools related method overrides.
  58
  59   int embedded_worker_id() const { return embedded_worker_id_; }
  60
  61  private:
  62   void OnSendMessageToWorker(int thread_id,
  63                              int embedded_worker_id,
  64                              int request_id,
  65                              const IPC::Message& message);
  66   void SendWorkerStarted();
  67
  68   const int embedded_worker_id_;
  69   const int64 service_worker_version_id_;
  70   const GURL script_url_;
  71   scoped_refptr<ThreadSafeSender> sender_;
  72   scoped_refptr<base::MessageLoopProxy> main_thread_proxy_;
  73   scoped_refptr<base::TaskRunner> worker_task_runner_;
  74
  75   scoped_ptr<ServiceWorkerScriptContext> script_context_;
  76
  77   base::WeakPtrFactory<EmbeddedWorkerContextClient> weak_factory_;
  78
  79   DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerContextClient);
  80 };
  81
  82 }  // namespace content
  83
  84 #endif  // CONTENT_CHILD_SERVICE_WORKER_EMBEDDED_WORKER_CLIENT_H_