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/*
* 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, 2013 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 "CachedResource.h"
#include "Document.h"
#include "Event.h"
#include "EventNames.h"
#include "EventSender.h"
#include "HTMLNames.h"
#include "MediaQueryParser.h"
#include "MediaQueryParserContext.h"
#include "NodeName.h"
#include "Page.h"
#include "ScriptableDocumentParser.h"
#include "ShadowRoot.h"
#include "StyleScope.h"
#include "StyleSheetContents.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/NeverDestroyed.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(HTMLStyleElement);
using namespace HTMLNames;
static StyleEventSender& styleLoadEventSender()
{
static NeverDestroyed<StyleEventSender> sharedLoadEventSender;
return sharedLoadEventSender;
}
inline HTMLStyleElement::HTMLStyleElement(const QualifiedName& tagName, Document& document, bool createdByParser)
: HTMLElement(tagName, document)
, m_styleSheetOwner(document, createdByParser)
{
ASSERT(hasTagName(styleTag));
}
HTMLStyleElement::~HTMLStyleElement()
{
m_styleSheetOwner.clearDocumentData(*this);
styleLoadEventSender().cancelEvent(*this);
}
Ref<HTMLStyleElement> HTMLStyleElement::create(const QualifiedName& tagName, Document& document, bool createdByParser)
{
return adoptRef(*new HTMLStyleElement(tagName, document, createdByParser));
}
Ref<HTMLStyleElement> HTMLStyleElement::create(Document& document)
{
return adoptRef(*new HTMLStyleElement(styleTag, document, false));
}
void HTMLStyleElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
switch (name.nodeName()) {
case AttributeNames::titleAttr:
if (sheet() && !isInShadowTree())
sheet()->setTitle(newValue);
break;
case AttributeNames::mediaAttr:
m_styleSheetOwner.setMedia(newValue);
if (sheet()) {
sheet()->setMediaQueries(MQ::MediaQueryParser::parse(newValue, MediaQueryParserContext(document())));
if (auto* scope = m_styleSheetOwner.styleScope())
scope->didChangeStyleSheetContents();
} else
m_styleSheetOwner.childrenChanged(*this);
break;
case AttributeNames::typeAttr:
m_styleSheetOwner.setContentType(newValue);
m_styleSheetOwner.childrenChanged(*this);
if (auto* scope = m_styleSheetOwner.styleScope())
scope->didChangeStyleSheetContents();
break;
default:
HTMLElement::attributeChanged(name, oldValue, newValue, attributeModificationReason);
break;
}
}
void HTMLStyleElement::finishParsingChildren()
{
m_styleSheetOwner.finishParsingChildren(*this);
HTMLElement::finishParsingChildren();
}
Node::InsertedIntoAncestorResult HTMLStyleElement::insertedIntoAncestor(InsertionType insertionType, ContainerNode& parentOfInsertedTree)
{
auto result = HTMLElement::insertedIntoAncestor(insertionType, parentOfInsertedTree);
if (insertionType.connectedToDocument)
m_styleSheetOwner.insertedIntoDocument(*this);
return result;
}
void HTMLStyleElement::removedFromAncestor(RemovalType removalType, ContainerNode& oldParentOfRemovedTree)
{
HTMLElement::removedFromAncestor(removalType, oldParentOfRemovedTree);
if (removalType.disconnectedFromDocument)
m_styleSheetOwner.removedFromDocument(*this);
}
void HTMLStyleElement::childrenChanged(const ChildChange& change)
{
HTMLElement::childrenChanged(change);
m_styleSheetOwner.childrenChanged(*this);
}
void HTMLStyleElement::dispatchPendingLoadEvents(Page* page)
{
styleLoadEventSender().dispatchPendingEvents(page);
}
void HTMLStyleElement::dispatchPendingEvent(StyleEventSender* eventSender, const AtomString& eventType)
{
ASSERT_UNUSED(eventSender, eventSender == &styleLoadEventSender());
dispatchEvent(Event::create(eventType, Event::CanBubble::No, Event::IsCancelable::No));
}
void HTMLStyleElement::notifyLoadedSheetAndAllCriticalSubresources(bool errorOccurred)
{
m_loadedSheet = !errorOccurred;
styleLoadEventSender().dispatchEventSoon(*this, m_loadedSheet ? eventNames().loadEvent : eventNames().errorEvent);
}
void HTMLStyleElement::addSubresourceAttributeURLs(ListHashSet<URL>& urls) const
{
HTMLElement::addSubresourceAttributeURLs(urls);
if (RefPtr styleSheet = this->sheet()) {
styleSheet->contents().traverseSubresources([&] (auto& resource) {
urls.add(resource.url());
return false;
});
}
}
bool HTMLStyleElement::disabled() const
{
if (!sheet())
return false;
return sheet()->disabled();
}
void HTMLStyleElement::setDisabled(bool setDisabled)
{
if (CSSStyleSheet* styleSheet = sheet())
styleSheet->setDisabled(setDisabled);
}
}
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