/*

    Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>

                  2004, 2005, 2006 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) && ENABLE(FILTERS)

#include "SVGFEMergeElement.h"

#include "SVGFEMergeNodeElement.h"

namespace WebCore {

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

    : SVGFilterPrimitiveStandardAttributes(tagName, doc)

{

}

SVGFEMergeElement::~SVGFEMergeElement()

{

}

PassRefPtr<FilterEffect> SVGFEMergeElement::build(SVGFilterBuilder* filterBuilder)

{

    Vector<RefPtr<FilterEffect> > mergeInputs;

    for (Node* n = firstChild(); n != 0; n = n->nextSibling()) {

        if (n->hasTagName(SVGNames::feMergeNodeTag)) {

            FilterEffect* mergeEffect = filterBuilder->getEffectById(static_cast<SVGFEMergeNodeElement*>(n)->in1());

            if (!mergeEffect)

                return 0;

            mergeInputs.append(mergeEffect);

        }

    }

    if (mergeInputs.isEmpty())

        return 0;

    return FEMerge::create(mergeInputs);

}

}

#endif // ENABLE(SVG)

// vim:ts=4:noet