HTML MessagePort as mojo::MessagePipeHandle

content/browser/shared_worker/shared_worker_host.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_SHARED_WORKER_SHARED_WORKER_HOST_H_
 #define CONTENT_BROWSER_SHARED_WORKER_SHARED_WORKER_HOST_H_
 
 #include <list>
 #include <memory>
 #include <set>
 #include <utility>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "content/browser/shared_worker/worker_document_set.h"
 
 class GURL;
 
 namespace IPC {
 class Message;
 }
 
 namespace content {
 
+class MessagePort;
 class SharedWorkerMessageFilter;
 class SharedWorkerInstance;
 
 // The SharedWorkerHost is the interface that represents the browser side of
 // the browser <-> worker communication channel. This is owned by
 // SharedWorkerServiceImpl and destructed when a worker context or worker's
 // message filter is closed.
 class SharedWorkerHost {
  public:
   SharedWorkerHost(SharedWorkerInstance* instance,
                    SharedWorkerMessageFilter* filter,
                    int worker_route_id);
   ~SharedWorkerHost();
 
   // Starts the SharedWorker in the renderer process which is associated with
   // |filter_|.
   void Start(bool pause_on_start);
 
   // Returns true iff the given message from a renderer process was forwarded to
   // the worker.
-  bool FilterConnectionMessage(int route_id,
-                               int sent_message_port_id,
-                               SharedWorkerMessageFilter* incoming_filter);
+  bool SendConnectToWorker(int worker_route_id,
+                           const MessagePort& port,
+                           SharedWorkerMessageFilter* filter);
 
   // Handles the shutdown of the filter. If the worker has no other client,
   // sends TerminateWorkerContext message to shut it down.
   void FilterShutdown(SharedWorkerMessageFilter* filter);
 
   // Shuts down any shared workers that are no longer referenced by active
   // documents.
   void DocumentDetached(SharedWorkerMessageFilter* filter,
                         unsigned long long document_id);
 
   // Removes the references to shared workers from the all documents in the
   // renderer frame. And shuts down any shared workers that are no longer
   // referenced by active documents.
   void RenderFrameDetached(int render_process_id, int render_frame_id);
 
   void CountFeature(uint32_t feature);
   void WorkerContextClosed();
   void WorkerContextDestroyed();
   void WorkerReadyForInspection();
   void WorkerScriptLoaded();
   void WorkerScriptLoadFailed();
-  void WorkerConnected(int message_port_id);
+  void WorkerConnected(int connection_request_id);
   void AllowFileSystem(const GURL& url,
                        std::unique_ptr<IPC::Message> reply_msg);
   void AllowIndexedDB(const GURL& url,
                       const base::string16& name,
                       bool* result);
 
   // Terminates the given worker, i.e. based on a UI action.
   void TerminateWorker();
 
   void AddFilter(SharedWorkerMessageFilter* filter, int route_id);
 
   SharedWorkerInstance* instance() { return instance_.get(); }
   WorkerDocumentSet* worker_document_set() const {
     return worker_document_set_.get();
   }
   SharedWorkerMessageFilter* worker_render_filter() const {
     return worker_render_filter_;
   }
   int process_id() const { return worker_process_id_; }
   int worker_route_id() const { return worker_route_id_; }
   bool IsAvailable() const;
 
  private:
   // Unique identifier for a worker client.
   class FilterInfo {
    public:
     FilterInfo(SharedWorkerMessageFilter* filter, int route_id)
-        : filter_(filter), route_id_(route_id), message_port_id_(0) {}
+        : filter_(filter), route_id_(route_id), connection_request_id_(0) {}
     SharedWorkerMessageFilter* filter() const { return filter_; }
     int route_id() const { return route_id_; }
-    int message_port_id() const { return message_port_id_; }
-    void set_message_port_id(int id) { message_port_id_ = id; }
+    int connection_request_id() const { return connection_request_id_; }
+    void set_connection_request_id(int id) { connection_request_id_ = id; }
 
    private:
     SharedWorkerMessageFilter* filter_;
     const int route_id_;
-    int message_port_id_;
+    int connection_request_id_;
   };
 
   using FilterList = std::list<FilterInfo>;
 
   // Return a vector of all the render process/render frame IDs.
   std::vector<std::pair<int, int> > GetRenderFrameIDsForWorker();
 
   void RemoveFilters(SharedWorkerMessageFilter* filter);
   bool HasFilter(SharedWorkerMessageFilter* filter, int route_id) const;
-  void Connect(int route_id,
-               int sent_message_port_id,
-               SharedWorkerMessageFilter* incoming_filter);
-  void SetMessagePortID(SharedWorkerMessageFilter* filter,
-                        int route_id,
-                        int message_port_id);
+  void SetConnectionRequestID(SharedWorkerMessageFilter* filter,
+                              int route_id,
+                              int connection_request_id);
   void AllowFileSystemResponse(std::unique_ptr<IPC::Message> reply_msg,
                                bool allowed);
 
   // Sends |message| to the SharedWorker.
   bool Send(IPC::Message* message);
 
   std::unique_ptr<SharedWorkerInstance> instance_;
   scoped_refptr<WorkerDocumentSet> worker_document_set_;
   FilterList filters_;
 
   // A message filter for a renderer process that hosts a worker. This is always
   // valid because this host is destructed immediately after the filter is
   // closed (see SharedWorkerServiceImpl::OnSharedWorkerMessageFilterClosing).
   SharedWorkerMessageFilter* worker_render_filter_;
 
   const int worker_process_id_;
   const int worker_route_id_;
+  int next_connection_request_id_;
   bool termination_message_sent_ = false;
   bool closed_ = false;
   const base::TimeTicks creation_time_;
 
   // This is the set of features that this worker has used. The values must be
   // from blink::UseCounter::Feature enum.
   std::set<uint32_t> used_features_;
 
   base::WeakPtrFactory<SharedWorkerHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SharedWorkerHost);
 };
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SHARED_WORKER_SHARED_WORKER_HOST_H_