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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:
SharedWorkerRepository()63         SharedWorkerRepository() { }
64     };
65 
66 } // namespace WebCore
67 
68 #endif // ENABLE(SHARED_WORKERS)
69 
70 #endif // SharedWorkerRepository_h
71