1/*
2 * Copyright (C) 2014 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef ServicesController_h
27#define ServicesController_h
28
29#if ENABLE(SERVICE_CONTROLS)
30
31#include <wtf/Forward.h>
32#include <wtf/Noncopyable.h>
33#include <wtf/RetainPtr.h>
34
35namespace WebKit {
36
37class WebContext;
38
39class ServicesController {
40    WTF_MAKE_NONCOPYABLE(ServicesController);
41    friend class NeverDestroyed<ServicesController>;
42public:
43    static ServicesController& shared();
44
45    bool hasImageServices() const { return m_hasImageServices; }
46    bool hasSelectionServices() const { return m_hasSelectionServices; }
47    bool hasRichContentServices() const { return m_hasRichContentServices; }
48
49    void refreshExistingServices(bool refreshImmediately = true);
50
51private:
52    ServicesController();
53
54    dispatch_queue_t m_refreshQueue;
55    std::atomic_bool m_hasPendingRefresh;
56
57    bool m_hasImageServices;
58    bool m_hasSelectionServices;
59    bool m_hasRichContentServices;
60
61    RetainPtr<id> m_extensionWatcher;
62    RetainPtr<id> m_uiExtensionWatcher;
63};
64
65} // namespace WebKit
66
67#endif // ENABLE(SERVICE_CONTROLS)
68#endif // ServicesController_h
69