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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 SharedWorkerRepository_h
     32 #define SharedWorkerRepository_h
     33 
     34 #if ENABLE(SHARED_WORKERS)
     35 
     36 #include "ExceptionCode.h"
     37 #include <wtf/Forward.h>
     38 #include <wtf/PassOwnPtr.h>
     39 #include <wtf/PassRefPtr.h>
     40 
     41 namespace WebCore {
     42 
     43     class Document;
     44     class KURL;
     45     class MessagePortChannel;
     46     class SharedWorker;
     47 
     48     // Interface to a repository which manages references to the set of active shared workers.
     49     class SharedWorkerRepository {
     50     public:
     51         // Returns true if the platform supports SharedWorkers, otherwise false.
     52         static bool isAvailable();
     53 
     54         // Connects the passed SharedWorker object with the specified worker thread, creating a new thread if necessary.
     55         static void connect(PassRefPtr<SharedWorker>, PassOwnPtr<MessagePortChannel>, const KURL&, const String& name, ExceptionCode&);
     56 
     57         // Invoked when a document has been detached.
     58         static void documentDetached(Document*);
     59 
     60         // Returns true if the passed document is associated with any SharedWorkers.
     61         static bool hasSharedWorkers(Document*);
     62     private:
     63         SharedWorkerRepository() { }
     64     };
     65 
     66 } // namespace WebCore
     67 
     68 #endif // ENABLE(SHARED_WORKERS)
     69 
     70 #endif // SharedWorkerRepository_h
     71