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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/css/MediaList.h"
#include "core/css/StyleEngine.h"
#include "core/dom/Document.h"
#include "core/dom/ShadowRoot.h"
#include "core/dom/events/Event.h"
#include "core/html_names.h"
#include "public/platform/TaskType.h"
namespace blink {
using namespace HTMLNames;
inline HTMLStyleElement::HTMLStyleElement(Document& document,
bool created_by_parser)
: HTMLElement(styleTag, document),
StyleElement(&document, created_by_parser),
fired_load_(false),
loaded_sheet_(false) {}
HTMLStyleElement::~HTMLStyleElement() = default;
HTMLStyleElement* HTMLStyleElement::Create(Document& document,
bool created_by_parser) {
return new HTMLStyleElement(document, created_by_parser);
}
void HTMLStyleElement::ParseAttribute(
const AttributeModificationParams& params) {
if (params.name == titleAttr && sheet_ && IsInDocumentTree()) {
sheet_->SetTitle(params.new_value);
} else if (params.name == mediaAttr && isConnected() &&
GetDocument().IsActive() && sheet_) {
sheet_->SetMediaQueries(MediaQuerySet::Create(params.new_value));
GetDocument().GetStyleEngine().MediaQueriesChangedInScope(GetTreeScope());
} else if (params.name == typeAttr) {
HTMLElement::ParseAttribute(params);
StyleElement::ChildrenChanged(*this);
} else {
HTMLElement::ParseAttribute(params);
}
}
void HTMLStyleElement::FinishParsingChildren() {
StyleElement::ProcessingResult result =
StyleElement::FinishParsingChildren(*this);
HTMLElement::FinishParsingChildren();
if (result == StyleElement::kProcessingFatalError)
NotifyLoadedSheetAndAllCriticalSubresources(
kErrorOccurredLoadingSubresource);
}
Node::InsertionNotificationRequest HTMLStyleElement::InsertedInto(
ContainerNode* insertion_point) {
HTMLElement::InsertedInto(insertion_point);
return kInsertionShouldCallDidNotifySubtreeInsertions;
}
void HTMLStyleElement::RemovedFrom(ContainerNode* insertion_point) {
HTMLElement::RemovedFrom(insertion_point);
StyleElement::RemovedFrom(*this, insertion_point);
}
void HTMLStyleElement::DidNotifySubtreeInsertionsToDocument() {
if (StyleElement::ProcessStyleSheet(GetDocument(), *this) ==
StyleElement::kProcessingFatalError)
NotifyLoadedSheetAndAllCriticalSubresources(
kErrorOccurredLoadingSubresource);
}
void HTMLStyleElement::ChildrenChanged(const ChildrenChange& change) {
HTMLElement::ChildrenChanged(change);
if (StyleElement::ChildrenChanged(*this) ==
StyleElement::kProcessingFatalError)
NotifyLoadedSheetAndAllCriticalSubresources(
kErrorOccurredLoadingSubresource);
}
const AtomicString& HTMLStyleElement::media() const {
return getAttribute(mediaAttr);
}
const AtomicString& HTMLStyleElement::type() const {
return getAttribute(typeAttr);
}
void HTMLStyleElement::DispatchPendingEvent(
std::unique_ptr<IncrementLoadEventDelayCount> count) {
if (loaded_sheet_) {
if (GetDocument().HasListenerType(
Document::kLoadListenerAtCapturePhaseOrAtStyleElement))
DispatchEvent(Event::Create(EventTypeNames::load));
} else {
DispatchEvent(Event::Create(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 error_status) {
bool is_load_event = error_status == kNoErrorLoadingSubresource;
if (fired_load_ && is_load_event)
return;
loaded_sheet_ = is_load_event;
GetDocument()
.GetTaskRunner(TaskType::kDOMManipulation)
->PostTask(FROM_HERE,
WTF::Bind(&HTMLStyleElement::DispatchPendingEvent,
WrapPersistent(this),
WTF::Passed(IncrementLoadEventDelayCount::Create(
GetDocument()))));
fired_load_ = true;
}
bool HTMLStyleElement::disabled() const {
if (!sheet_)
return false;
return sheet_->disabled();
}
void HTMLStyleElement::setDisabled(bool set_disabled) {
if (CSSStyleSheet* style_sheet = sheet())
style_sheet->setDisabled(set_disabled);
}
void HTMLStyleElement::Trace(blink::Visitor* visitor) {
StyleElement::Trace(visitor);
HTMLElement::Trace(visitor);
}
} // namespace blink
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