/**

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

 *

 * Copyright (C) 2006, 2007 Rob Buis

 *

 * 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 "StyleElement.h"

#include "Document.h"

#include "Element.h"

#include "MappedAttribute.h"

#include "MediaList.h"

#include "MediaQueryEvaluator.h"

namespace WebCore {

StyleElement::StyleElement()

{

}

StyleSheet* StyleElement::sheet(Element* e)

{

    if (!m_sheet)

        createSheet(e);

    return m_sheet.get();

}

void StyleElement::insertedIntoDocument(Document* document, Element* element)

{

    process(element);

}

void StyleElement::removedFromDocument(Document* document)

{

    if (m_sheet)

        document->updateStyleSelector();

}

void StyleElement::process(Element* e)

{

    if (!e || !e->inDocument())

        return;

    String text = "";

    for (Node* c = e->firstChild(); c; c = c->nextSibling())

        if (c->nodeType() == Node::TEXT_NODE || c->nodeType() == Node::CDATA_SECTION_NODE || c->nodeType() == Node::COMMENT_NODE)

            text += c->nodeValue();

    createSheet(e, text);

}

void StyleElement::createSheet(Element* e, const String& text)

{

    Document* document = e->document();

    if (m_sheet) {

        if (static_cast<CSSStyleSheet*>(m_sheet.get())->isLoading())

            document->removePendingSheet();

        m_sheet = 0;

    }

    String typeValue = e->isHTMLElement() ? type().deprecatedString().lower() : type();

    if (typeValue.isEmpty() || typeValue == "text/css") { // Type must be empty or CSS

        RefPtr<MediaList> mediaList = new MediaList((CSSStyleSheet*)0, media(), e->isHTMLElement());

        MediaQueryEvaluator screenEval("screen", true);

        MediaQueryEvaluator printEval("print", true);

        if (screenEval.eval(mediaList.get()) || printEval.eval(mediaList.get())) {

            document->addPendingSheet();

            setLoading(true);

            m_sheet = new CSSStyleSheet(e, String(), document->inputEncoding());

            m_sheet->parseString(text, !document->inCompatMode());

            m_sheet->setMedia(mediaList.get());

            m_sheet->setTitle(e->title());

            setLoading(false);

        }

    }

    if (m_sheet)

        m_sheet->checkLoaded();

}

}