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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 WorkerObjectProxy_h
     32 #define WorkerObjectProxy_h
     33 
     34 #if ENABLE(WORKERS)
     35 
     36 #include "WorkerReportingProxy.h"
     37 #include "MessagePort.h"
     38 #include <wtf/PassOwnPtr.h>
     39 
     40 namespace WebCore {
     41 
     42     class MessagePortChannel;
     43 
     44     // A proxy to talk to the worker object.
     45     class WorkerObjectProxy : public WorkerReportingProxy {
     46     public:
     47         virtual void postMessageToWorkerObject(PassRefPtr<SerializedScriptValue>, PassOwnPtr<MessagePortChannelArray>) = 0;
     48 
     49         virtual void confirmMessageFromWorkerObject(bool hasPendingActivity) = 0;
     50         virtual void reportPendingActivity(bool hasPendingActivity) = 0;
     51 
     52         // No need to notify the parent page context when dedicated workers are closing.
     53         virtual void workerContextClosed() { }
     54     };
     55 
     56 } // namespace WebCore
     57 
     58 #endif // ENABLE(WORKERS)
     59 
     60 #endif // WorkerObjectProxy_h
     61