text: /*
   * Copyright (C) 2009 Google Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   *
   *     * Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   *     * Redistributions in binary form must reproduce the above
   * copyright notice, this list of conditions and the following disclaimer
   * in the documentation and/or other materials provided with the
   * distribution.
   *     * Neither the name of Google Inc. nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef WebSharedWorker_h
  #define WebSharedWorker_h
  
  #include "platform/WebCommon.h"
  
  namespace WebCore {
  class ScriptExecutionContext;
  }
  
  namespace WebKit {
  
  class WebString;
  class WebMessagePortChannel;
  class WebSharedWorkerClient;
  class WebURL;
  
  // This is the interface to a SharedWorker thread.
  // Since SharedWorkers communicate entirely through MessagePorts this interface only contains APIs for starting up a SharedWorker.
  class WebSharedWorker {
  public:
      // Invoked from the worker thread to instantiate a WebSharedWorker that interacts with the WebKit worker components.
      WEBKIT_EXPORT static WebSharedWorker* create(WebSharedWorkerClient*);
  
      virtual ~WebSharedWorker() {};
  
      // Returns false if the thread hasn't been started yet (script loading has not taken place).
      // FIXME(atwilson): Remove this when we move the initial script loading into the worker process.
      virtual bool isStarted() = 0;
  
      virtual void startWorkerContext(const WebURL& scriptURL,
                                      const WebString& name,
                                      const WebString& userAgent,
                                      const WebString& sourceCode,
                                      long long scriptResourceAppCacheID) = 0;
  
      class ConnectListener {
      public:
          // Invoked once the connect event has been sent so the caller can free this object.
          virtual void connected() = 0;
      };
  
      // Sends a connect event to the SharedWorker context. The listener is invoked when this async operation completes.
      virtual void connect(WebMessagePortChannel*, ConnectListener*) = 0;
  
      // Invoked to shutdown the worker when there are no more associated documents.
      virtual void terminateWorkerContext() = 0;
  
      // Notification when the WebCommonWorkerClient is destroyed.
      virtual void clientDestroyed() = 0;
  
      virtual void pauseWorkerContextOnStart() { }
      virtual void resumeWorkerContext() { }
      virtual void attachDevTools() { }
      virtual void reattachDevTools(const WebString& savedState) { }
      virtual void detachDevTools() { }
      virtual void dispatchDevToolsMessage(const WebString&) { }
  };
  
  } // namespace WebKit
  
  #endif
  