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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 "CSSStyleSheet.h"
#include "CachedStyleSheetClient.h"
#include "CachedResourceHandle.h"
#include "DOMSettableTokenList.h"
#include "HTMLElement.h"
#include "IconURL.h"
#include "LinkLoader.h"
#include "LinkLoaderClient.h"
#include "LinkRelAttribute.h"
namespace WebCore {
class HTMLLinkElement;
class KURL;
template<typename T> class EventSender;
typedef EventSender<HTMLLinkElement> LinkEventSender;
class HTMLLinkElement FINAL : public HTMLElement, public CachedStyleSheetClient, public LinkLoaderClient {
public:
static PassRefPtr<HTMLLinkElement> create(const QualifiedName&, Document*, bool createdByParser);
virtual ~HTMLLinkElement();
KURL href() const;
String rel() const;
virtual String target() const;
String type() const;
IconType iconType() const;
// the icon size string as parsed from the HTML attribute
String iconSizes() const;
CSSStyleSheet* sheet() const { return m_sheet.get(); }
bool styleSheetIsLoading() const;
bool isDisabled() const { return m_disabledState == Disabled; }
bool isEnabledViaScript() const { return m_disabledState == EnabledViaScript; }
void setSizes(const String&);
DOMSettableTokenList* sizes() const;
void dispatchPendingEvent(LinkEventSender*);
static void dispatchPendingLoadEvents();
private:
virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
virtual bool shouldLoadLink();
void process();
static void processCallback(Node*);
void clearSheet();
virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
virtual void removedFrom(ContainerNode*) OVERRIDE;
// from CachedResourceClient
virtual void setCSSStyleSheet(const String& href, const KURL& baseURL, const String& charset, const CachedCSSStyleSheet* sheet);
virtual bool sheetLoaded();
virtual void notifyLoadedSheetAndAllCriticalSubresources(bool errorOccurred);
virtual void startLoadingDynamicSheet();
virtual void linkLoaded() OVERRIDE;
virtual void linkLoadingErrored() OVERRIDE;
bool isAlternate() const { return m_disabledState == Unset && m_relAttribute.m_isAlternate; }
void setDisabledState(bool);
virtual bool isURLAttribute(const Attribute&) const OVERRIDE;
private:
virtual void addSubresourceAttributeURLs(ListHashSet<KURL>&) const;
virtual void finishParsingChildren();
enum PendingSheetType { Unknown, ActiveSheet, InactiveSheet };
void addPendingSheet(PendingSheetType);
enum RemovePendingSheetNotificationType {
RemovePendingSheetNotifyImmediately,
RemovePendingSheetNotifyLater
};
void removePendingSheet(RemovePendingSheetNotificationType = RemovePendingSheetNotifyImmediately);
#if ENABLE(MICRODATA)
virtual String itemValueText() const OVERRIDE;
virtual void setItemValueText(const String&, ExceptionCode&) OVERRIDE;
#endif
private:
HTMLLinkElement(const QualifiedName&, Document*, bool createdByParser);
LinkLoader m_linkLoader;
CachedResourceHandle<CachedCSSStyleSheet> m_cachedSheet;
RefPtr<CSSStyleSheet> m_sheet;
enum DisabledState {
Unset,
EnabledViaScript,
Disabled
};
String m_type;
String m_media;
RefPtr<DOMSettableTokenList> m_sizes;
DisabledState m_disabledState;
LinkRelAttribute m_relAttribute;
bool m_loading;
bool m_createdByParser;
bool m_isInShadowTree;
bool m_firedLoad;
bool m_loadedSheet;
PendingSheetType m_pendingSheetType;
};
} //namespace
#endif
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