/*

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

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

 *           (C) 2001 Dirk Mueller (mueller@kde.org)

 * Copyright (C) 2003, 2010 Apple Inc. All rights reserved.

 *           (C) 2007 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"

#include "HTMLStyleElement.h"

#include "Attribute.h"

#include "Document.h"

#include "HTMLNames.h"

#include "ScriptableDocumentParser.h"

#include "ScriptEventListener.h"

namespace WebCore {

using namespace HTMLNames;

inline HTMLStyleElement::HTMLStyleElement(const QualifiedName& tagName, Document* document, bool createdByParser)

    : HTMLElement(tagName, document)

    , m_loading(false)

    , m_createdByParser(createdByParser)

    , m_startLineNumber(0)

{

    ASSERT(hasTagName(styleTag));

    if (createdByParser && document && document->scriptableDocumentParser())

        m_startLineNumber = document->scriptableDocumentParser()->lineNumber();

}

PassRefPtr<HTMLStyleElement> HTMLStyleElement::create(const QualifiedName& tagName, Document* document, bool createdByParser)

{

    return adoptRef(new HTMLStyleElement(tagName, document, createdByParser));

}

void HTMLStyleElement::parseMappedAttribute(Attribute* attr)

{

    if (attr->name() == titleAttr && m_sheet)

        m_sheet->setTitle(attr->value());

    else if (attr->name() == onbeforeprocessAttr)

        setAttributeEventListener(eventNames().beforeprocessEvent, createAttributeEventListener(this, attr));

    else

        HTMLElement::parseMappedAttribute(attr);

}

void HTMLStyleElement::finishParsingChildren()

{

    StyleElement::process(this, m_startLineNumber);

    StyleElement::sheet(this);

    m_createdByParser = false;

    HTMLElement::finishParsingChildren();

}

void HTMLStyleElement::insertedIntoDocument()

{

    HTMLElement::insertedIntoDocument();

    document()->addStyleSheetCandidateNode(this, m_createdByParser);

    if (!m_createdByParser)

        StyleElement::insertedIntoDocument(document(), this);

}

void HTMLStyleElement::removedFromDocument()

{

    HTMLElement::removedFromDocument();

    document()->removeStyleSheetCandidateNode(this);

    StyleElement::removedFromDocument(document());

}

void HTMLStyleElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)

{

    if (!changedByParser)

        StyleElement::process(this, 0);

    HTMLElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);

}

StyleSheet* HTMLStyleElement::sheet()

{

    return StyleElement::sheet(this);

}

bool HTMLStyleElement::isLoading() const

{

    if (m_loading)

        return true;

    if (!m_sheet)

        return false;

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

}

bool HTMLStyleElement::sheetLoaded()

{

    if (!isLoading()) {

        document()->removePendingSheet();

        return true;

    }

    return false;

}

const AtomicString& HTMLStyleElement::media() const

{

    return getAttribute(mediaAttr);

}

const AtomicString& HTMLStyleElement::type() const

{

    return getAttribute(typeAttr);

}

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

{    

    HTMLElement::addSubresourceAttributeURLs(urls);

    if (StyleSheet* styleSheet = const_cast<HTMLStyleElement*>(this)->sheet())

        styleSheet->addSubresourceStyleURLs(urls);

}

}