// Copyright (c) 2009 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 WEBKIT_GLUE_WEBWORKER_IMPL_H_
#define WEBKIT_GLUE_WEBWORKER_IMPL_H_

#include "third_party/WebKit/WebKit/chromium/public/WebWorker.h"

#if ENABLE(WORKERS)

#include <vector>
#include "ScriptExecutionContext.h"
#include "WorkerObjectProxy.h"
#include <wtf/RefPtr.h>

namespace WebCore {
class ScriptExecutionContext;
class Strng;
class WorkerThread;
};

// This class is used by the worker process code to talk to the WebCore::Worker
// implementation.  It can't use it directly since it uses WebKit types, so this
// class converts the data types.  When the WebCore::Worker object wants to call
// WebCore::WorkerObjectProxy, this class will conver to Chrome data types first
// and then call the supplied WebWorkerClient.
class WebWorkerImpl: public WebCore::WorkerObjectProxy,
                     public WebKit::WebWorker {
 public:
  explicit WebWorkerImpl(WebKit::WebWorkerClient* client);
  virtual ~WebWorkerImpl();

  // WebCore::WorkerObjectProxy methods:
  virtual void postMessageToWorkerObject(const WebCore::String& message);
  virtual void postExceptionToWorkerObject(
      const WebCore::String& error_message,
      int line_number,
      const WebCore::String& source_url);
  virtual void postConsoleMessageToWorkerObject(
      WebCore::MessageDestination destination,
      WebCore::MessageSource source,
      WebCore::MessageLevel level,
      const WebCore::String& message,
      int line_number,
      const WebCore::String& source_url);
  virtual void confirmMessageFromWorkerObject(bool has_pending_activity);
  virtual void reportPendingActivity(bool has_pending_activity);
  virtual void workerContextDestroyed();

  // WebWorker methods:
  virtual void startWorkerContext(const WebKit::WebURL& script_url,
                                  const WebKit::WebString& user_agent,
                                  const WebKit::WebString& source_code);
  virtual void terminateWorkerContext();
  virtual void postMessageToWorkerContext(const WebKit::WebString& message);
  virtual void workerObjectDestroyed();

 private:
  static void PostMessageToWorkerContextTask(
      WebCore::ScriptExecutionContext* context,
      WebWorkerImpl* this_ptr,
      const WebCore::String& message);

  WebKit::WebWorkerClient* client_;
  WTF::RefPtr<WebCore::WorkerThread> worker_thread_;

  DISALLOW_COPY_AND_ASSIGN(WebWorkerImpl);
};

#endif

#endif  // WEBKIT_GLUE_WEBWORKER_IMPL_H_