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 WebWorkerImpl_h

    32 #define WebWorkerImpl_h

    33 

    34 #include "WebWorker.h"

    35 

    36 #if ENABLE(WORKERS)

    37 

    38 #include "ScriptExecutionContext.h"

    39 

    40 #include "WebWorkerBase.h"

    41 

    42 namespace WebKit {

    43 class WebView;

    44 

    45 // This class is used by the worker process code to talk to the WebCore::Worker

    46 // implementation.  It can't use it directly since it uses WebKit types, so this

    47 // class converts the data types.  When the WebCore::Worker object wants to call

    48 // WebCore::WorkerObjectProxy, this class will conver to Chrome data types first

    49 // and then call the supplied WebWorkerClient.

    50 class WebWorkerImpl : public WebWorkerBase, public WebWorker {

    51 public:

    52     explicit WebWorkerImpl(WebWorkerClient* client);

    53 

    54     // WebWorker methods:

    55     virtual void startWorkerContext(const WebURL&, const WebString&, const WebString&);

    56     virtual void terminateWorkerContext();

    57     virtual void postMessageToWorkerContext(const WebString&, const WebMessagePortChannelArray&);

    58     virtual void workerObjectDestroyed();

    59     virtual void clientDestroyed();

    60 

    61     // WebWorkerBase methods:

    62     virtual WebWorkerClient* client() { return m_client; }

    63     virtual WebCommonWorkerClient* commonClient();

    64 

    65 private:

    66     virtual ~WebWorkerImpl();

    67 

    68     // Tasks that are run on the worker thread.

    69     static void postMessageToWorkerContextTask(

    70         WebCore::ScriptExecutionContext* context,

    71         WebWorkerImpl* thisPtr,

    72         const WebCore::String& message,

    73         PassOwnPtr<WebCore::MessagePortChannelArray> channels);

    74 

    75     WebWorkerClient* m_client;

    76 

    77 };

    78 

    79 } // namespace WebKit

    80 

    81 #endif // ENABLE(WORKERS)

    82 

    83 #endif