/*

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

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

 *           (C) 2000 Simon Hausmann (hausmann@kde.org)

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

 * Copyright (C) 2004, 2006, 2009 Apple Inc. All rights reserved.

 *

 * 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 "HTMLFrameElement.h"

#include "Attribute.h"

#include "Frame.h"

#include "HTMLFrameSetElement.h"

#include "HTMLNames.h"

#include "RenderFrame.h"

namespace WebCore {

using namespace HTMLNames;

inline HTMLFrameElement::HTMLFrameElement(const QualifiedName& tagName, Document* document)

    : HTMLFrameElementBase(tagName, document)

    , m_frameBorder(true)

    , m_frameBorderSet(false)

    , m_noResize(false)

{

    ASSERT(hasTagName(frameTag));

}

PassRefPtr<HTMLFrameElement> HTMLFrameElement::create(const QualifiedName& tagName, Document* document)

{

    return adoptRef(new HTMLFrameElement(tagName, document));

}

bool HTMLFrameElement::rendererIsNeeded(RenderStyle*)

{

    // For compatibility, frames render even when display: none is set.

    return isURLAllowed();

}

RenderObject* HTMLFrameElement::createRenderer(RenderArena* arena, RenderStyle*)

{

    return new (arena) RenderFrame(this);

}

static inline HTMLFrameSetElement* containingFrameSetElement(Node* node)

{

    while ((node = node->parentNode())) {

        if (node->hasTagName(framesetTag))

            return static_cast<HTMLFrameSetElement*>(node);

    }

    return 0;

}

void HTMLFrameElement::attach()

{

    HTMLFrameElementBase::attach();

    if (HTMLFrameSetElement* frameSetElement = containingFrameSetElement(this)) {

        if (!m_frameBorderSet)

            m_frameBorder = frameSetElement->hasFrameBorder();

        if (!m_noResize)

            m_noResize = frameSetElement->noResize();

    }

}

void HTMLFrameElement::parseMappedAttribute(Attribute* attr)

{

    if (attr->name() == frameborderAttr) {

        m_frameBorder = attr->value().toInt();

        m_frameBorderSet = !attr->isNull();

        // FIXME: If we are already attached, this has no effect.

    } else if (attr->name() == noresizeAttr) {

        m_noResize = true;

        // FIXME: If we are already attached, this has no effect.

        // FIXME: Since this does not check attr->isNull(), it can

        // never reset m_noResize to false if the attribute is removed.

    } else

        HTMLFrameElementBase::parseMappedAttribute(attr);

}

} // namespace WebCore