/*

    Copyright (C) 2006 Apple Computer, Inc.

              (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>

    This file is part of the WebKit project

    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"

#if ENABLE(SVG) && ENABLE(SVG_FOREIGN_OBJECT)

#include "SVGForeignObjectElement.h"

#include "Attribute.h"

#include "CSSPropertyNames.h"

#include "RenderForeignObject.h"

#include "RenderSVGResource.h"

#include "SVGLength.h"

#include "SVGNames.h"

#include <wtf/Assertions.h>

namespace WebCore {

SVGForeignObjectElement::SVGForeignObjectElement(const QualifiedName& tagName, Document *doc)

    : SVGStyledTransformableElement(tagName, doc)

    , SVGTests()

    , SVGLangSpace()

    , SVGExternalResourcesRequired()

    , m_x(LengthModeWidth)

    , m_y(LengthModeHeight)

    , m_width(LengthModeWidth)

    , m_height(LengthModeHeight)

{

}

SVGForeignObjectElement::~SVGForeignObjectElement()

{

}

void SVGForeignObjectElement::parseMappedAttribute(Attribute* attr)

{

    const AtomicString& value = attr->value();

    if (attr->name() == SVGNames::xAttr)

        setXBaseValue(SVGLength(LengthModeWidth, value));

    else if (attr->name() == SVGNames::yAttr)

        setYBaseValue(SVGLength(LengthModeHeight, value));

    else if (attr->name() == SVGNames::widthAttr)

        setWidthBaseValue(SVGLength(LengthModeWidth, value));

    else if (attr->name() == SVGNames::heightAttr)

        setHeightBaseValue(SVGLength(LengthModeHeight, value));

    else {

        if (SVGTests::parseMappedAttribute(attr))

            return;

        if (SVGLangSpace::parseMappedAttribute(attr))

            return;

        if (SVGExternalResourcesRequired::parseMappedAttribute(attr))

            return;

        SVGStyledTransformableElement::parseMappedAttribute(attr);

    }

}

void SVGForeignObjectElement::svgAttributeChanged(const QualifiedName& attrName)

{

    SVGStyledTransformableElement::svgAttributeChanged(attrName);

    bool isLengthAttribute = attrName == SVGNames::xAttr

                          || attrName == SVGNames::yAttr

                          || attrName == SVGNames::widthAttr

                          || attrName == SVGNames::heightAttr;

    if (isLengthAttribute)

        updateRelativeLengthsInformation();

    RenderObject* renderer = this->renderer();

    if (!renderer)

        return;

    if (SVGStyledTransformableElement::isKnownAttribute(attrName)) {

        renderer->setNeedsTransformUpdate();

        RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);

        return;

    }

    if (isLengthAttribute

        || SVGTests::isKnownAttribute(attrName)

        || SVGLangSpace::isKnownAttribute(attrName)

        || SVGExternalResourcesRequired::isKnownAttribute(attrName))

        RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);

}

void SVGForeignObjectElement::synchronizeProperty(const QualifiedName& attrName)

{

    SVGStyledTransformableElement::synchronizeProperty(attrName);

    if (attrName == anyQName()) {

        synchronizeX();

        synchronizeY();

        synchronizeWidth();

        synchronizeHeight();

        synchronizeExternalResourcesRequired();

        synchronizeHref();

        return;

    }

    if (attrName == SVGNames::xAttr)

        synchronizeX();

    else if (attrName == SVGNames::yAttr)

        synchronizeY();

    else if (attrName == SVGNames::widthAttr)

        synchronizeWidth();

    else if (attrName == SVGNames::heightAttr)

        synchronizeHeight();

    else if (SVGExternalResourcesRequired::isKnownAttribute(attrName))

        synchronizeExternalResourcesRequired();

    else if (SVGURIReference::isKnownAttribute(attrName))

        synchronizeHref();

}

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

{

    return new (arena) RenderForeignObject(this);

}

bool SVGForeignObjectElement::childShouldCreateRenderer(Node* child) const

{

    // Disallow arbitary SVG content. Only allow proper <svg xmlns="svgNS"> subdocuments.

    if (child->isSVGElement())

        return child->hasTagName(SVGNames::svgTag);

    // Skip over SVG rules which disallow non-SVG kids

    return StyledElement::childShouldCreateRenderer(child);

}

bool SVGForeignObjectElement::selfHasRelativeLengths() const

{

    return x().isRelative()

        || y().isRelative()

        || width().isRelative()

        || height().isRelative();

}

}

#endif