/*

    Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>

                  2004, 2005, 2006, 2007, 2008 Rob Buis <buis@kde.org>

    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)

#include "SVGTextPositioningElement.h"

#include "Attribute.h"

#include "RenderObject.h"

#include "RenderSVGResource.h"

#include "SVGLengthList.h"

#include "SVGNames.h"

#include "SVGNumberList.h"

namespace WebCore {

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

    : SVGTextContentElement(tagName, doc)

    , m_x(SVGLengthList::create(SVGNames::xAttr))

    , m_y(SVGLengthList::create(SVGNames::yAttr))

    , m_dx(SVGLengthList::create(SVGNames::dxAttr))

    , m_dy(SVGLengthList::create(SVGNames::dyAttr))

    , m_rotate(SVGNumberList::create(SVGNames::rotateAttr))

{

}

SVGTextPositioningElement::~SVGTextPositioningElement()

{

}

void SVGTextPositioningElement::parseMappedAttribute(Attribute* attr)

{

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

        xBaseValue()->parse(attr->value(), LengthModeWidth);

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

        yBaseValue()->parse(attr->value(), LengthModeHeight);

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

        dxBaseValue()->parse(attr->value(), LengthModeWidth);

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

        dyBaseValue()->parse(attr->value(), LengthModeHeight);

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

        rotateBaseValue()->parse(attr->value());

    else

        SVGTextContentElement::parseMappedAttribute(attr);

}

void SVGTextPositioningElement::svgAttributeChanged(const QualifiedName& attrName)

{

    SVGTextContentElement::svgAttributeChanged(attrName);

    if (attrName == SVGNames::xAttr

        || attrName == SVGNames::yAttr

        || attrName == SVGNames::dxAttr

        || attrName == SVGNames::dyAttr)

        updateRelativeLengthsInformation();

    if (!renderer())

        return;

    if (isKnownAttribute(attrName))

        RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer());

}

void SVGTextPositioningElement::synchronizeProperty(const QualifiedName& attrName)

{

    SVGTextContentElement::synchronizeProperty(attrName);

    if (attrName == anyQName()) {

        synchronizeX();

        synchronizeY();

        synchronizeDx();

        synchronizeDy();

        synchronizeRotate();

        return;

    }

    if (attrName == SVGNames::xAttr)

        synchronizeX();

    else if (attrName == SVGNames::yAttr)

        synchronizeY();

    else if (attrName == SVGNames::dxAttr)

        synchronizeDx();

    else if (attrName == SVGNames::dyAttr)

        synchronizeDy();

    else if (attrName == SVGNames::rotateAttr)

        synchronizeRotate();

}

bool SVGTextPositioningElement::isKnownAttribute(const QualifiedName& attrName)

{

    return (attrName.matches(SVGNames::xAttr) ||

            attrName.matches(SVGNames::yAttr) ||

            attrName.matches(SVGNames::dxAttr) ||

            attrName.matches(SVGNames::dyAttr) ||

            attrName.matches(SVGNames::rotateAttr) ||

            SVGTextContentElement::isKnownAttribute(attrName));

}

static inline bool listContainsRelativeValue(SVGLengthList* list)

{

    if (!list)

        return false;

    ExceptionCode ec = 0;

    int length = list->numberOfItems();

    for (int i = 0; i < length; ++i) {

        SVGLength length(list->getItem(i, ec));

        ASSERT(!ec);

        if (length.isRelative())

            return true;

    }

    return false;

}

bool SVGTextPositioningElement::selfHasRelativeLengths() const

{

    if (SVGTextContentElement::selfHasRelativeLengths())

        return true;

    if (listContainsRelativeValue(x()))

        return true;

    if (listContainsRelativeValue(y()))

        return true;

    if (listContainsRelativeValue(dx()))

        return true;

    if (listContainsRelativeValue(dy()))

        return true;

    return false;

}

}

#endif // ENABLE(SVG)