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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003, 2008, 2010 Apple Inc. All rights reserved.
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* 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.
*
*/
#ifndef HTMLLinkElement_h
#define HTMLLinkElement_h
#include "bindings/core/v8/TraceWrapperMember.h"
#include "core/CoreExport.h"
#include "core/dom/DOMTokenList.h"
#include "core/dom/IncrementLoadEventDelayCount.h"
#include "core/html/HTMLElement.h"
#include "core/html/LinkRelAttribute.h"
#include "core/html/LinkResource.h"
#include "core/html/LinkStyle.h"
#include "core/html/RelList.h"
#include "core/loader/LinkLoader.h"
#include "core/loader/LinkLoaderClient.h"
#include <memory>
namespace blink {
class KURL;
class LinkImport;
class CORE_EXPORT HTMLLinkElement final : public HTMLElement,
public LinkLoaderClient,
private DOMTokenListObserver {
DEFINE_WRAPPERTYPEINFO();
USING_GARBAGE_COLLECTED_MIXIN(HTMLLinkElement);
public:
static HTMLLinkElement* create(Document&, bool createdByParser);
~HTMLLinkElement() override;
KURL href() const;
const AtomicString& rel() const;
String media() const { return m_media; }
String typeValue() const { return m_type; }
String asValue() const { return m_as; }
ReferrerPolicy referrerPolicy() const { return m_referrerPolicy; }
const LinkRelAttribute& relAttribute() const { return m_relAttribute; }
DOMTokenList& relList() const {
return static_cast<DOMTokenList&>(*m_relList);
}
String scope() const { return m_scope; }
const AtomicString& type() const;
IconType getIconType() const;
// the icon sizes as parsed from the HTML attribute
const Vector<IntSize>& iconSizes() const;
bool async() const;
CSSStyleSheet* sheet() const {
return linkStyle() ? linkStyle()->sheet() : 0;
}
Document* import() const;
bool styleSheetIsLoading() const;
bool isImport() const { return linkImport(); }
bool isDisabled() const { return linkStyle() && linkStyle()->isDisabled(); }
bool isEnabledViaScript() const {
return linkStyle() && linkStyle()->isEnabledViaScript();
}
DOMTokenList* sizes() const;
void dispatchPendingEvent(std::unique_ptr<IncrementLoadEventDelayCount>);
void scheduleEvent();
// From LinkLoaderClient
bool shouldLoadLink() override;
// For LinkStyle
bool loadLink(const String& type,
const String& as,
const String& media,
ReferrerPolicy,
const KURL&);
bool isAlternate() const {
return linkStyle()->isUnset() && m_relAttribute.isAlternate();
}
bool shouldProcessStyle() { return linkResourceToProcess() && linkStyle(); }
bool isCreatedByParser() const { return m_createdByParser; }
DECLARE_VIRTUAL_TRACE();
DECLARE_VIRTUAL_TRACE_WRAPPERS();
private:
HTMLLinkElement(Document&, bool createdByParser);
LinkStyle* linkStyle() const;
LinkImport* linkImport() const;
LinkResource* linkResourceToProcess();
void process();
static void processCallback(Node*);
// From Node and subclassses
void parseAttribute(const AttributeModificationParams&) override;
InsertionNotificationRequest insertedInto(ContainerNode*) override;
void removedFrom(ContainerNode*) override;
bool isURLAttribute(const Attribute&) const override;
bool hasLegalLinkAttribute(const QualifiedName&) const override;
const QualifiedName& subResourceAttributeName() const override;
bool sheetLoaded() override;
void notifyLoadedSheetAndAllCriticalSubresources(
LoadedSheetErrorStatus) override;
void startLoadingDynamicSheet() override;
void finishParsingChildren() override;
// From LinkLoaderClient
void linkLoaded() override;
void linkLoadingErrored() override;
void didStartLinkPrerender() override;
void didStopLinkPrerender() override;
void didSendLoadForLinkPrerender() override;
void didSendDOMContentLoadedForLinkPrerender() override;
// From DOMTokenListObserver
void valueWasSet() final;
Member<LinkResource> m_link;
Member<LinkLoader> m_linkLoader;
String m_type;
String m_as;
String m_media;
ReferrerPolicy m_referrerPolicy;
Member<DOMTokenList> m_sizes;
Vector<IntSize> m_iconSizes;
TraceWrapperMember<RelList> m_relList;
LinkRelAttribute m_relAttribute;
String m_scope;
bool m_createdByParser;
};
} // namespace blink
#endif // HTMLLinkElement_h
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