/*

 * Copyright (C) 1997 Martin Jones (mjones@kde.org)

 *           (C) 1997 Torben Weis (weis@kde.org)

 *           (C) 1998 Waldo Bastian (bastian@kde.org)

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

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

 * Copyright (C) 2003, 2004, 2005, 2006, 2010 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 "HTMLTableCellElement.h"

#include "Attribute.h"

#include "CSSPropertyNames.h"

#include "CSSValueKeywords.h"

#include "HTMLNames.h"

#include "HTMLTableElement.h"

#include "RenderTableCell.h"

using std::max;

using std::min;

namespace WebCore {

// Clamp rowspan at 8k to match Firefox.

static const int maxRowspan = 8190;

using namespace HTMLNames;

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

    : HTMLTablePartElement(tagName, document)

    , m_row(-1)

    , m_col(-1)

    , m_rowSpan(1)

    , m_colSpan(1)

{

}

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

{

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

}

int HTMLTableCellElement::cellIndex() const

{

    int index = 0;

    for (const Node * node = previousSibling(); node; node = node->previousSibling()) {

        if (node->hasTagName(tdTag) || node->hasTagName(thTag))

            index++;

    }

    return index;

}

bool HTMLTableCellElement::mapToEntry(const QualifiedName& attrName, MappedAttributeEntry& result) const

{

    if (attrName == nowrapAttr) {

        result = eUniversal;

        return false;

    }

    if (attrName == widthAttr ||

        attrName == heightAttr) {

        result = eCell; // Because of the quirky behavior of ignoring 0 values, cells are special.

        return false;

    }

    return HTMLTablePartElement::mapToEntry(attrName, result);

}

void HTMLTableCellElement::parseMappedAttribute(Attribute* attr)

{

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

        m_rowSpan = max(1, min(attr->value().toInt(), maxRowspan));

        if (renderer() && renderer()->isTableCell())

            toRenderTableCell(renderer())->updateFromElement();

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

        m_colSpan = max(1, attr->value().toInt());

        if (renderer() && renderer()->isTableCell())

            toRenderTableCell(renderer())->updateFromElement();

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

        if (!attr->isNull())

            addCSSProperty(attr, CSSPropertyWhiteSpace, CSSValueWebkitNowrap);

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

        if (!attr->value().isEmpty()) {

            int widthInt = attr->value().toInt();

            if (widthInt > 0) // width="0" is ignored for compatibility with WinIE.

                addCSSLength(attr, CSSPropertyWidth, attr->value());

        }

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

        if (!attr->value().isEmpty()) {

            int heightInt = attr->value().toInt();

            if (heightInt > 0) // height="0" is ignored for compatibility with WinIE.

                addCSSLength(attr, CSSPropertyHeight, attr->value());

        }

    } else

        HTMLTablePartElement::parseMappedAttribute(attr);

}

// used by table cells to share style decls created by the enclosing table.

void HTMLTableCellElement::additionalAttributeStyleDecls(Vector<CSSMutableStyleDeclaration*>& results)

{

    Node* p = parentNode();

    while (p && !p->hasTagName(tableTag))

        p = p->parentNode();

    if (!p)

        return;

    static_cast<HTMLTableElement*>(p)->addSharedCellDecls(results);

}

bool HTMLTableCellElement::isURLAttribute(Attribute *attr) const

{

    return attr->name() == backgroundAttr;

}

String HTMLTableCellElement::abbr() const

{

    return getAttribute(abbrAttr);

}

String HTMLTableCellElement::axis() const

{

    return getAttribute(axisAttr);

}

void HTMLTableCellElement::setColSpan(int n)

{

    setAttribute(colspanAttr, String::number(n));

}

String HTMLTableCellElement::headers() const

{

    return getAttribute(headersAttr);

}

void HTMLTableCellElement::setRowSpan(int n)

{

    setAttribute(rowspanAttr, String::number(n));

}

String HTMLTableCellElement::scope() const

{

    return getAttribute(scopeAttr);

}

void HTMLTableCellElement::addSubresourceAttributeURLs(ListHashSet<KURL>& urls) const

{

    HTMLTablePartElement::addSubresourceAttributeURLs(urls);

    addSubresourceURL(urls, document()->completeURL(getAttribute(backgroundAttr)));

}

}