1/*
2 * Copyright (C) 2007-2016 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. ``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 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#include "config.h"
27#include "JSCSSStyleDeclaration.h"
28
29#include "DOMWrapperWorld.h"
30#include "JSCSSRuleCustom.h"
31#include "JSDOMConvertInterface.h"
32#include "JSDOMConvertStrings.h"
33#include "JSDeprecatedCSSOMValue.h"
34#include "JSNodeCustom.h"
35#include "JSStyleSheetCustom.h"
36#include "StyledElement.h"
37
38
39namespace WebCore {
40using namespace JSC;
41
42void* root(CSSStyleDeclaration* style)
43{
44 ASSERT(style);
45 if (auto* parentRule = style->parentRule())
46 return root(parentRule);
47 if (auto* styleSheet = style->parentStyleSheet())
48 return root(styleSheet);
49 if (auto* parentElement = style->parentElement())
50 return root(parentElement);
51 return style;
52}
53
54void JSCSSStyleDeclaration::visitAdditionalChildren(SlotVisitor& visitor)
55{
56 visitor.addOpaqueRoot(root(&wrapped()));
57}
58
59} // namespace WebCore
60