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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 WebCommonWorkerClient_h
     32 #define WebCommonWorkerClient_h
     33 
     34 namespace WebKit {
     35 
     36 class WebNotificationPresenter;
     37 class WebString;
     38 class WebWorker;
     39 class WebWorkerClient;
     40 
     41 // Provides an interface back to the in-page script object for a worker.
     42 // This interface contains common APIs used by both shared and dedicated
     43 // workers.
     44 // All functions are expected to be called back on the thread that created
     45 // the Worker object, unless noted.
     46 class WebCommonWorkerClient {
     47 public:
     48     virtual void postExceptionToWorkerObject(
     49         const WebString& errorString, int lineNumber,
     50         const WebString& sourceURL) = 0;
     51 
     52     virtual void postConsoleMessageToWorkerObject(
     53         int destinationIdentifier,
     54         int sourceIdentifier,
     55         int messageType,
     56         int messageLevel,
     57         const WebString& message,
     58         int lineNumber,
     59         const WebString& sourceURL) = 0;
     60 
     61     virtual void workerContextClosed() = 0;
     62     virtual void workerContextDestroyed() = 0;
     63 
     64     // Returns the notification presenter for this worker context.  Pointer
     65     // is owned by the object implementing WebCommonWorkerClient.
     66     virtual WebNotificationPresenter* notificationPresenter() = 0;
     67 
     68     // This can be called on any thread to create a nested WebWorker.
     69     // WebSharedWorkers are not instantiated via this API - instead
     70     // they are created via the WebSharedWorkerRepository.
     71     virtual WebWorker* createWorker(WebWorkerClient* client) = 0;
     72 
     73 protected:
     74     ~WebCommonWorkerClient() { }
     75 };
     76 
     77 } // namespace WebKit
     78 
     79 #endif
     80