/*
 * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
 * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
 * Copyright (C) 2006, 2013 Apple Inc. All rights reserved.
 * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au>
 *
 * 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 "SVGStyleElement.h"

#include "Attribute.h"
#include "CSSStyleSheet.h"
#include "Document.h"
#include "ExceptionCode.h"
#include "SVGNames.h"
#include <wtf/NeverDestroyed.h>
#include <wtf/StdLibExtras.h>

namespace WebCore {

inline SVGStyleElement::SVGStyleElement(const QualifiedName& tagName, Document& document, bool createdByParser)
    : SVGElement(tagName, document)
    , m_styleSheetOwner(document, createdByParser)
    , m_svgLoadEventTimer(*this, &SVGElement::svgLoadEventTimerFired)
{
    ASSERT(hasTagName(SVGNames::styleTag));
}

SVGStyleElement::~SVGStyleElement()
{
    m_styleSheetOwner.clearDocumentData(document(), *this);
}

Ref<SVGStyleElement> SVGStyleElement::create(const QualifiedName& tagName, Document& document, bool createdByParser)
{
    return adoptRef(*new SVGStyleElement(tagName, document, createdByParser));
}

bool SVGStyleElement::disabled() const
{
    return sheet() && sheet()->disabled();
}

void SVGStyleElement::setDisabled(bool setDisabled)
{
    if (CSSStyleSheet* styleSheet = sheet())
        styleSheet->setDisabled(setDisabled);
}

const AtomicString& SVGStyleElement::type() const
{
    DEPRECATED_DEFINE_STATIC_LOCAL(const AtomicString, defaultValue, ("text/css", AtomicString::ConstructFromLiteral));
    const AtomicString& n = getAttribute(SVGNames::typeAttr);
    return n.isNull() ? defaultValue : n;
}

void SVGStyleElement::setType(const AtomicString& type, ExceptionCode&)
{
    setAttribute(SVGNames::typeAttr, type);
}

const AtomicString& SVGStyleElement::media() const
{
    DEPRECATED_DEFINE_STATIC_LOCAL(const AtomicString, defaultValue, ("all", AtomicString::ConstructFromLiteral));
    const AtomicString& n = fastGetAttribute(SVGNames::mediaAttr);
    return n.isNull() ? defaultValue : n;
}

void SVGStyleElement::setMedia(const AtomicString& media, ExceptionCode&)
{
    setAttribute(SVGNames::mediaAttr, media);
}

String SVGStyleElement::title() const
{
    return fastGetAttribute(SVGNames::titleAttr);
}

void SVGStyleElement::setTitle(const AtomicString& title, ExceptionCode&)
{
    setAttribute(SVGNames::titleAttr, title);
}

bool SVGStyleElement::isSupportedAttribute(const QualifiedName& attrName)
{
    static NeverDestroyed<HashSet<QualifiedName>> supportedAttributes;
    if (supportedAttributes.get().isEmpty()) {
        SVGLangSpace::addSupportedAttributes(supportedAttributes);
        supportedAttributes.get().add(SVGNames::titleAttr);
        supportedAttributes.get().add(SVGNames::mediaAttr);
        supportedAttributes.get().add(SVGNames::typeAttr);
    }
    return supportedAttributes.get().contains<SVGAttributeHashTranslator>(attrName);
}

void SVGStyleElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
    if (!isSupportedAttribute(name)) {
        SVGElement::parseAttribute(name, value);
        return;
    }
    if (name == SVGNames::titleAttr) {
        if (sheet())
            sheet()->setTitle(value);
        return;
    }
    if (name == SVGNames::typeAttr) {
        m_styleSheetOwner.setContentType(value);
        return;
    }
    if (name == SVGNames::mediaAttr) {
        m_styleSheetOwner.setMedia(value);
        return;
    }
    if (SVGLangSpace::parseAttribute(name, value))
        return;

    ASSERT_NOT_REACHED();
}

void SVGStyleElement::finishParsingChildren()
{
    m_styleSheetOwner.finishParsingChildren(*this);
    SVGElement::finishParsingChildren();
}

Node::InsertionNotificationRequest SVGStyleElement::insertedInto(ContainerNode& rootParent)
{
    SVGElement::insertedInto(rootParent);
    if (rootParent.inDocument())
        m_styleSheetOwner.insertedIntoDocument(document(), *this);
    return InsertionDone;
}

void SVGStyleElement::removedFrom(ContainerNode& rootParent)
{
    SVGElement::removedFrom(rootParent);
    if (rootParent.inDocument())
        m_styleSheetOwner.removedFromDocument(document(), *this);
}

void SVGStyleElement::childrenChanged(const ChildChange& change)
{
    SVGElement::childrenChanged(change);
    m_styleSheetOwner.childrenChanged(*this);
}

}
