/*
 * Copyright (C) 2007, 2008, 2009 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 COMPUTER, 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 COMPUTER, 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 "JSNamedNodeMap.h"

#include "JSNode.h"

#include "Element.h"
#include "NamedNodeMap.h"

using namespace JSC;

namespace WebCore {

bool JSNamedNodeMap::canGetItemsForName(ExecState*, NamedNodeMap* impl, PropertyName propertyName)
{
    return impl->getNamedItem(propertyNameToString(propertyName));
}

JSValue JSNamedNodeMap::nameGetter(ExecState* exec, JSValue slotBase, PropertyName propertyName)
{
    JSNamedNodeMap* thisObj = jsCast<JSNamedNodeMap*>(asObject(slotBase));
    return toJS(exec, thisObj->globalObject(), thisObj->impl()->getNamedItem(propertyNameToString(propertyName)));
}

void JSNamedNodeMap::visitChildren(JSCell* cell, SlotVisitor& visitor)
{
    JSNamedNodeMap* thisObject = jsCast<JSNamedNodeMap*>(cell);
    ASSERT_GC_OBJECT_INHERITS(thisObject, &s_info);
    COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
    ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
    Base::visitChildren(thisObject, visitor);

    // We need to keep the wrapper for our underlying NamedNodeMap's element
    // alive because NamedNodeMap and Attr rely on the element for data, and
    // don't know how to keep it alive correctly.
    // FIXME: Fix this lifetime issue in the DOM, and remove this.
    Element* element = thisObject->impl()->element();
    if (!element)
        return;
    visitor.addOpaqueRoot(root(element));
}

} // namespace WebCore
