1/*
2 * Copyright (C) 2007, 2009, 2010 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 COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#ifndef JSNodeCustom_h
27#define JSNodeCustom_h
28
29#include "JSDOMBinding.h"
30#include <wtf/AlwaysInline.h>
31
32namespace WebCore {
33
34class JSNodeOwner : public JSC::WeakHandleOwner {
35    virtual bool isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown>, void* context, JSC::MarkStack&);
36    virtual void finalize(JSC::Handle<JSC::Unknown>, void* context);
37};
38
39inline JSC::WeakHandleOwner* wrapperOwner(DOMWrapperWorld*, Node*)
40{
41    DEFINE_STATIC_LOCAL(JSNodeOwner, jsNodeOwner, ());
42    return &jsNodeOwner;
43}
44
45inline void* wrapperContext(DOMWrapperWorld* world, Node*)
46{
47    return world;
48}
49
50inline JSDOMWrapper* getInlineCachedWrapper(DOMWrapperWorld* world, Node* node)
51{
52    if (!world->isNormal())
53        return 0;
54    return node->wrapper();
55}
56
57inline bool setInlineCachedWrapper(DOMWrapperWorld* world, Node* node, JSDOMWrapper* wrapper)
58{
59    if (!world->isNormal())
60        return false;
61    ASSERT(!node->wrapper());
62    node->setWrapper(*world->globalData(), wrapper, wrapperOwner(world, node), wrapperContext(world, node));
63    return true;
64}
65
66inline bool clearInlineCachedWrapper(DOMWrapperWorld* world, Node* node, JSDOMWrapper* wrapper)
67{
68    if (!world->isNormal())
69        return false;
70    ASSERT_UNUSED(wrapper, node->wrapper() == wrapper);
71    node->clearWrapper();
72    return true;
73}
74
75JSC::JSValue createWrapper(JSC::ExecState*, JSDOMGlobalObject*, Node*);
76
77inline JSC::JSValue toJS(JSC::ExecState* exec, JSDOMGlobalObject* globalObject, Node* node)
78{
79    if (!node)
80        return JSC::jsNull();
81
82    JSNode* wrapper = static_cast<JSNode*>(getCachedWrapper(currentWorld(exec), node));
83    if (wrapper)
84        return wrapper;
85
86    return createWrapper(exec, globalObject, node);
87}
88
89static inline Node* root(Node* node)
90{
91    if (node->inDocument())
92        return node->document();
93
94    while (node->parentNode())
95        node = node->parentNode();
96    return node;
97}
98
99}
100
101#endif // JSDOMNodeCustom_h
102