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      1 // Copyright (c) 2012 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_WORKER_WEBSHAREDWORKER_STUB_H_
      6 #define CONTENT_WORKER_WEBSHAREDWORKER_STUB_H_
      7 
      8 #include "base/memory/scoped_ptr.h"
      9 #include "content/child/scoped_child_process_reference.h"
     10 #include "content/worker/websharedworkerclient_proxy.h"
     11 #include "content/worker/worker_webapplicationcachehost_impl.h"
     12 #include "ipc/ipc_listener.h"
     13 #include "third_party/WebKit/public/web/WebSharedWorker.h"
     14 #include "url/gurl.h"
     15 
     16 namespace blink {
     17 class WebSharedWorker;
     18 }
     19 
     20 namespace content {
     21 
     22 class SharedWorkerDevToolsAgent;
     23 class WebMessagePortChannelImpl;
     24 
     25 // This class creates a WebSharedWorker, and translates incoming IPCs to the
     26 // appropriate WebSharedWorker APIs.
     27 class WebSharedWorkerStub : public IPC::Listener {
     28  public:
     29   WebSharedWorkerStub(const GURL& url,
     30                       const base::string16& name,
     31                       const base::string16& content_security_policy,
     32                       blink::WebContentSecurityPolicyType security_policy_type,
     33                       bool pause_on_start,
     34                       int route_id);
     35 
     36   // IPC::Listener implementation.
     37   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
     38   virtual void OnChannelError() OVERRIDE;
     39 
     40   // Invoked when the WebSharedWorkerClientProxy is shutting down.
     41   void Shutdown();
     42 
     43   void WorkerScriptLoaded();
     44   void WorkerScriptLoadFailed();
     45 
     46   // Called after terminating the worker context to make sure that the worker
     47   // actually terminates (is not stuck in an infinite loop).
     48   void EnsureWorkerContextTerminates();
     49 
     50   WebSharedWorkerClientProxy* client() { return &client_; }
     51 
     52   // Returns the script url of this worker.
     53   const GURL& url();
     54 
     55 
     56  private:
     57   virtual ~WebSharedWorkerStub();
     58 
     59   void OnConnect(int sent_message_port_id, int routing_id);
     60 
     61   void OnTerminateWorkerContext();
     62 
     63   ScopedChildProcessReference process_ref_;
     64 
     65   int route_id_;
     66 
     67   // WebSharedWorkerClient that responds to outgoing API calls
     68   // from the worker object.
     69   WebSharedWorkerClientProxy client_;
     70 
     71   blink::WebSharedWorker* impl_;
     72   bool running_;
     73   GURL url_;
     74   scoped_ptr<SharedWorkerDevToolsAgent> worker_devtools_agent_;
     75 
     76   typedef std::vector<WebMessagePortChannelImpl*> PendingChannelList;
     77   PendingChannelList pending_channels_;
     78 
     79   DISALLOW_COPY_AND_ASSIGN(WebSharedWorkerStub);
     80 };
     81 
     82 }  // namespace content
     83 
     84 #endif  // CONTENT_WORKER_WEBSHAREDWORKER_STUB_H_
     85