/*

 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)

 *           (C) 1999 Antti Koivisto (koivisto@kde.org)

 *           (C) 2001 Dirk Mueller (mueller@kde.org)

 * Copyright (C) 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.

 *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public License

 * along with this library; see the file COPYING.LIB.  If not, write to

 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 *

 */

#include "config.h"

#include "HTMLLegendElement.h"

#include "HTMLNames.h"

#include <wtf/StdLibExtras.h>

namespace WebCore {

using namespace HTMLNames;

inline HTMLLegendElement::HTMLLegendElement(const QualifiedName& tagName, Document* document, HTMLFormElement* form)

    : HTMLFormControlElement(tagName, document, form)

{

    ASSERT(hasTagName(legendTag));

}

PassRefPtr<HTMLLegendElement> HTMLLegendElement::create(const QualifiedName& tagName, Document* document, HTMLFormElement* form)

{

    return adoptRef(new HTMLLegendElement(tagName, document, form));

}

bool HTMLLegendElement::supportsFocus() const

{

    return HTMLElement::supportsFocus();

}

const AtomicString& HTMLLegendElement::formControlType() const

{

    DEFINE_STATIC_LOCAL(const AtomicString, legend, ("legend"));

    return legend;

}

HTMLFormControlElement* HTMLLegendElement::associatedControl()

{

    // Check if there's a fieldset belonging to this legend.

    Node* fieldset = parentNode();

    while (fieldset && !fieldset->hasTagName(fieldsetTag))

        fieldset = fieldset->parentNode();

    if (!fieldset)

        return 0;

    // Find first form element inside the fieldset that is not a legend element.

    // FIXME: Should we consider tabindex?

    Node* node = fieldset;

    while ((node = node->traverseNextNode(fieldset))) {

        if (node->isElementNode()) {

            Element* element = static_cast<Element*>(node);

            if (!element->hasLocalName(legendTag) && element->isFormControlElement())

                return static_cast<HTMLFormControlElement*>(element);

        }

    }

    return 0;

}

void HTMLLegendElement::focus(bool)

{

    if (isFocusable())

        Element::focus();

    // To match other browsers' behavior, never restore previous selection.

    if (HTMLFormControlElement* control = associatedControl())

        control->focus(false);

}

void HTMLLegendElement::accessKeyAction(bool sendToAnyElement)

{

    if (HTMLFormControlElement* control = associatedControl())

        control->accessKeyAction(sendToAnyElement);

}

} // namespace