/*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 */

#ifndef SharedWorkerRepository_h
#define SharedWorkerRepository_h

#if ENABLE(SHARED_WORKERS)

#include "ExceptionCode.h"
#include <wtf/Forward.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/PassRefPtr.h>

namespace WebCore {

    class Document;
    class KURL;
    class MessagePortChannel;
    class SharedWorker;

    // Interface to a repository which manages references to the set of active shared workers.
    class SharedWorkerRepository {
    public:
        // Returns true if the platform supports SharedWorkers, otherwise false.
        static bool isAvailable();

        // Connects the passed SharedWorker object with the specified worker thread, creating a new thread if necessary.
        static void connect(PassRefPtr<SharedWorker>, PassOwnPtr<MessagePortChannel>, const KURL&, const String& name, ExceptionCode&);

        // Invoked when a document has been detached.
        static void documentDetached(Document*);

        // Returns true if the passed document is associated with any SharedWorkers.
        static bool hasSharedWorkers(Document*);
    private:
        SharedWorkerRepository() { }
    };

} // namespace WebCore

#endif // ENABLE(SHARED_WORKERS)

#endif // SharedWorkerRepository_h