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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 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 "core/html/HTMLStyleElement.h"
#include "core/HTMLNames.h"
#include "core/css/MediaList.h"
#include "core/dom/Document.h"
#include "core/dom/StyleEngine.h"
#include "core/dom/TaskRunnerHelper.h"
#include "core/dom/shadow/ShadowRoot.h"
#include "core/events/Event.h"
namespace blink {
using namespace HTMLNames;
inline HTMLStyleElement::HTMLStyleElement(Document& document,
bool createdByParser)
: HTMLElement(styleTag, document),
StyleElement(&document, createdByParser),
m_firedLoad(false),
m_loadedSheet(false) {}
HTMLStyleElement::~HTMLStyleElement() {}
HTMLStyleElement* HTMLStyleElement::create(Document& document,
bool createdByParser) {
return new HTMLStyleElement(document, createdByParser);
}
void HTMLStyleElement::parseAttribute(
const AttributeModificationParams& params) {
if (params.name == titleAttr && m_sheet && isInDocumentTree()) {
m_sheet->setTitle(params.newValue);
} else if (params.name == mediaAttr && isConnected() &&
document().isActive() && m_sheet) {
m_sheet->setMediaQueries(MediaQuerySet::create(params.newValue));
document().styleEngine().mediaQueriesChangedInScope(treeScope());
} else {
HTMLElement::parseAttribute(params);
}
}
void HTMLStyleElement::finishParsingChildren() {
StyleElement::ProcessingResult result =
StyleElement::finishParsingChildren(*this);
HTMLElement::finishParsingChildren();
if (result == StyleElement::ProcessingFatalError)
notifyLoadedSheetAndAllCriticalSubresources(
ErrorOccurredLoadingSubresource);
}
Node::InsertionNotificationRequest HTMLStyleElement::insertedInto(
ContainerNode* insertionPoint) {
HTMLElement::insertedInto(insertionPoint);
return InsertionShouldCallDidNotifySubtreeInsertions;
}
void HTMLStyleElement::removedFrom(ContainerNode* insertionPoint) {
HTMLElement::removedFrom(insertionPoint);
StyleElement::removedFrom(*this, insertionPoint);
}
void HTMLStyleElement::didNotifySubtreeInsertionsToDocument() {
if (StyleElement::processStyleSheet(document(), *this) ==
StyleElement::ProcessingFatalError)
notifyLoadedSheetAndAllCriticalSubresources(
ErrorOccurredLoadingSubresource);
}
void HTMLStyleElement::childrenChanged(const ChildrenChange& change) {
HTMLElement::childrenChanged(change);
if (StyleElement::childrenChanged(*this) ==
StyleElement::ProcessingFatalError)
notifyLoadedSheetAndAllCriticalSubresources(
ErrorOccurredLoadingSubresource);
}
const AtomicString& HTMLStyleElement::media() const {
return getAttribute(mediaAttr);
}
const AtomicString& HTMLStyleElement::type() const {
return getAttribute(typeAttr);
}
void HTMLStyleElement::dispatchPendingEvent(
std::unique_ptr<IncrementLoadEventDelayCount> count) {
dispatchEvent(Event::create(m_loadedSheet ? EventTypeNames::load
: EventTypeNames::error));
// Checks Document's load event synchronously here for performance.
// This is safe because dispatchPendingEvent() is called asynchronously.
count->clearAndCheckLoadEvent();
}
void HTMLStyleElement::notifyLoadedSheetAndAllCriticalSubresources(
LoadedSheetErrorStatus errorStatus) {
bool isLoadEvent = errorStatus == NoErrorLoadingSubresource;
if (m_firedLoad && isLoadEvent)
return;
m_loadedSheet = isLoadEvent;
TaskRunnerHelper::get(TaskType::DOMManipulation, &document())
->postTask(
BLINK_FROM_HERE,
WTF::bind(
&HTMLStyleElement::dispatchPendingEvent, wrapPersistent(this),
WTF::passed(IncrementLoadEventDelayCount::create(document()))));
m_firedLoad = true;
}
bool HTMLStyleElement::disabled() const {
if (!m_sheet)
return false;
return m_sheet->disabled();
}
void HTMLStyleElement::setDisabled(bool setDisabled) {
if (CSSStyleSheet* styleSheet = sheet())
styleSheet->setDisabled(setDisabled);
}
DEFINE_TRACE(HTMLStyleElement) {
StyleElement::trace(visitor);
HTMLElement::trace(visitor);
}
} // namespace blink
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