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      1 /*
      2  * Copyright (C) 2009 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef WebWorker_h
     32 #define WebWorker_h
     33 
     34 #include "WebMessagePortChannel.h"
     35 
     36 namespace WebKit {
     37 
     38 class WebString;
     39 class WebURL;
     40 class WebWorkerClient;
     41 
     42 // Provides an interface to the script execution context for a worker.
     43 class WebWorker {
     44 public:
     45     // Instantiates a built-in WebWorker.
     46     WEBKIT_API static WebWorker* create(WebWorkerClient*);
     47 
     48     virtual ~WebWorker() { }
     49     virtual void startWorkerContext(const WebURL& scriptURL,
     50                                     const WebString& userAgent,
     51                                     const WebString& sourceCode) = 0;
     52     virtual void terminateWorkerContext() = 0;
     53     virtual void postMessageToWorkerContext(
     54         const WebString&,
     55         const WebMessagePortChannelArray&) = 0;
     56     virtual void workerObjectDestroyed() = 0;
     57     virtual void clientDestroyed() = 0;
     58 };
     59 
     60 } // namespace WebKit
     61 
     62 #endif
     63