/*

 * This file is part of the DOM implementation for KDE.

 *

 * 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 Apple Computer, Inc.

 *           (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 "HTMLOptGroupElement.h"

#include "Document.h"

#include "HTMLNames.h"

#include "HTMLSelectElement.h"

#include "RenderMenuList.h"

namespace WebCore {

using namespace HTMLNames;

HTMLOptGroupElement::HTMLOptGroupElement(Document* doc, HTMLFormElement* f)

    : HTMLGenericFormElement(optgroupTag, doc, f)

    , m_style(0)

{

}

bool HTMLOptGroupElement::isFocusable() const

{

    return false;

}

const AtomicString& HTMLOptGroupElement::type() const

{

    static const AtomicString optgroup("optgroup");

    return optgroup;

}

bool HTMLOptGroupElement::insertBefore(PassRefPtr<Node> newChild, Node* refChild, ExceptionCode& ec)

{

    bool result = HTMLGenericFormElement::insertBefore(newChild, refChild, ec);

    if (result)

        recalcSelectOptions();

    return result;

}

bool HTMLOptGroupElement::replaceChild(PassRefPtr<Node> newChild, Node* oldChild, ExceptionCode& ec)

{

    bool result = HTMLGenericFormElement::replaceChild(newChild, oldChild, ec);

    if (result)

        recalcSelectOptions();

    return result;

}

bool HTMLOptGroupElement::removeChild(Node* oldChild, ExceptionCode& ec)

{

    bool result = HTMLGenericFormElement::removeChild(oldChild, ec);

    if (result)

        recalcSelectOptions();

    return result;

}

bool HTMLOptGroupElement::appendChild(PassRefPtr<Node> newChild, ExceptionCode& ec)

{

    bool result = HTMLGenericFormElement::appendChild(newChild, ec);

    if (result)

        recalcSelectOptions();

    return result;

}

ContainerNode* HTMLOptGroupElement::addChild(PassRefPtr<Node> newChild)

{

    ContainerNode* result = HTMLGenericFormElement::addChild(newChild);

    if (result)

        recalcSelectOptions();

    return result;

}

void HTMLOptGroupElement::parseMappedAttribute(MappedAttribute *attr)

{

    HTMLGenericFormElement::parseMappedAttribute(attr);

    recalcSelectOptions();

}

void HTMLOptGroupElement::recalcSelectOptions()

{

    Node *select = parentNode();

    while (select && !select->hasTagName(selectTag))

        select = select->parentNode();

    if (select)

        static_cast<HTMLSelectElement*>(select)->setRecalcListItems();

}

String HTMLOptGroupElement::label() const

{

    return getAttribute(labelAttr);

}

void HTMLOptGroupElement::setLabel(const String &value)

{

    setAttribute(labelAttr, value);

}

bool HTMLOptGroupElement::checkDTD(const Node* newChild)

{

    // Make sure to keep this in sync with <select> (other than not allowing an optgroup).

    return newChild->isTextNode() || newChild->hasTagName(HTMLNames::optionTag) || newChild->hasTagName(HTMLNames::hrTag) || newChild->hasTagName(HTMLNames::scriptTag);

}

void HTMLOptGroupElement::attach()

{

    if (parentNode()->renderStyle()) {

        RenderStyle* style = styleForRenderer(0);

        setRenderStyle(style);

        style->deref(document()->renderArena());

    }

    HTMLGenericFormElement::attach();

}

void HTMLOptGroupElement::detach()

{

    if (m_style) {

        m_style->deref(document()->renderArena());

        m_style = 0;

    }

    HTMLGenericFormElement::detach();

}

void HTMLOptGroupElement::setRenderStyle(RenderStyle* newStyle)

{

    RenderStyle* oldStyle = m_style;

    m_style = newStyle;

    if (newStyle)

        newStyle->ref();

    if (oldStyle)

        oldStyle->deref(document()->renderArena());

}

String HTMLOptGroupElement::groupLabelText()

{

    DeprecatedString itemText = getAttribute(labelAttr).deprecatedString();

    itemText.replace('\\', document()->backslashAsCurrencySymbol());

    // In WinIE, leading and trailing whitespace is ignored in options and optgroups. We match this behavior.

    itemText = itemText.stripWhiteSpace();

    // We want to collapse our whitespace too.  This will match other browsers.

    itemText = itemText.simplifyWhiteSpace();

    return itemText;

}

} // namespace