1/*
2 * Copyright (C) 2013 Apple Inc. All rights reserved.
3 * Copyright (c) 2010, Google Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 * * Neither the name of Google Inc. nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#pragma once
33
34#include <JavaScriptCore/Weak.h>
35#include <wtf/IsoMalloc.h>
36
37namespace JSC {
38class WeakHandleOwner;
39}
40
41namespace WebCore {
42
43class JSDOMObject;
44
45class ScriptWrappable {
46public:
47 JSDOMObject* wrapper() const;
48 void setWrapper(JSDOMObject*, JSC::WeakHandleOwner*, void*);
49 void clearWrapper(JSDOMObject*);
50
51 template<typename Derived>
52 static ptrdiff_t offsetOfWrapper() { return CAST_OFFSET(Derived*, ScriptWrappable*) + OBJECT_OFFSETOF(ScriptWrappable, m_wrapper); }
53
54protected:
55 ~ScriptWrappable() = default;
56
57private:
58 JSC::Weak<JSDOMObject> m_wrapper;
59};
60
61} // namespace WebCore
62