/*
 * Copyright (C) 2011 Google 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:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "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 THE COPYRIGHT
 * OWNER 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 "HTMLContentElement.h"

#include "ContentDistributor.h"
#include "ContentSelectorQuery.h"
#include "ContextFeatures.h"
#include "ElementShadow.h"
#include "HTMLNames.h"
#include "QualifiedName.h"
#include "ShadowRoot.h"
#include <wtf/StdLibExtras.h>

namespace WebCore {

using HTMLNames::selectAttr;

static const QualifiedName& contentTagName(Document* document)
{
#if ENABLE(SHADOW_DOM)
    if (!ContextFeatures::shadowDOMEnabled(document))
        return HTMLNames::webkitShadowContentTag;
    return HTMLNames::contentTag;
#else
    UNUSED_PARAM(document);
    return HTMLNames::webkitShadowContentTag;
#endif
}

PassRefPtr<HTMLContentElement> HTMLContentElement::create(Document* document)
{
    return adoptRef(new HTMLContentElement(contentTagName(document), document));
}

PassRefPtr<HTMLContentElement> HTMLContentElement::create(const QualifiedName& tagName, Document* document)
{
    return adoptRef(new HTMLContentElement(tagName, document));
}

HTMLContentElement::HTMLContentElement(const QualifiedName& name, Document* document)
    : InsertionPoint(name, document)
{
}

HTMLContentElement::~HTMLContentElement()
{
}

const AtomicString& HTMLContentElement::select() const
{
    return getAttribute(selectAttr);
}

bool HTMLContentElement::isSelectValid() const
{
    ContentSelectorQuery query(this);
    return query.isValidSelector();
}

void HTMLContentElement::setSelect(const AtomicString& selectValue)
{
    setAttribute(selectAttr, selectValue);
}

void HTMLContentElement::parseAttribute(const Attribute& attribute)
{
    if (attribute.name() == selectAttr) {
        if (ShadowRoot* root = shadowRoot())
            root->owner()->invalidateDistribution();
    } else
        InsertionPoint::parseAttribute(attribute);
}

}
