Source/WebCore/bindings/js/JSCSSStyleDeclarationCustom.cpp

/*
 * Copyright (C) 2007-2016 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

#include "config.h"
#include "JSCSSStyleDeclaration.h"

#include "DOMWrapperWorld.h"
#include "JSCSSRuleCustom.h"
#include "JSDOMConvertInterface.h"
#include "JSDOMConvertStrings.h"
#include "JSDeprecatedCSSOMValue.h"
#include "JSNodeCustom.h"
#include "JSStyleSheetCustom.h"
#include "StyledElement.h"


namespace WebCore {
using namespace JSC;

void* root(CSSStyleDeclaration* style)
{
    ASSERT(style);
    if (auto* parentRule = style->parentRule())
        return root(parentRule);
    if (auto* styleSheet = style->parentStyleSheet())
        return root(styleSheet);
    if (auto* parentElement = style->parentElement())
        return root(parentElement);
    return style;
}

void JSCSSStyleDeclaration::visitAdditionalChildren(SlotVisitor& visitor)
{
    visitor.addOpaqueRoot(root(&wrapped()));
}

} // namespace WebCore