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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.
*
* 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 "CachedResourceClient.h"
#include "CachedResourceHandle.h"
#include "HTMLElement.h"
#include "Timer.h"
namespace WebCore {
class CachedCSSStyleSheet;
class CachedResource;
class KURL;
class HTMLLinkElement : public HTMLElement, public CachedResourceClient {
public:
struct RelAttribute {
bool m_isStyleSheet;
bool m_isIcon;
bool m_isAlternate;
bool m_isDNSPrefetch;
#ifdef ANDROID_APPLE_TOUCH_ICON
bool m_isTouchIcon;
bool m_isPrecomposedTouchIcon;
#endif
#if ENABLE(LINK_PREFETCH)
bool m_isLinkPrefetch;
bool m_isLinkSubresource;
#endif
RelAttribute()
: m_isStyleSheet(false)
, m_isIcon(false)
, m_isAlternate(false)
, m_isDNSPrefetch(false)
#if ENABLE(LINK_PREFETCH)
, m_isLinkPrefetch(false)
, m_isLinkSubresource(false)
#endif
{
}
};
static PassRefPtr<HTMLLinkElement> create(const QualifiedName&, Document*, bool createdByParser);
virtual ~HTMLLinkElement();
KURL href() const;
String rel() const;
virtual String target() const;
String type() const;
StyleSheet* sheet() const;
bool isLoading() const;
bool isDisabled() const { return m_disabledState == Disabled; }
bool isEnabledViaScript() const { return m_disabledState == EnabledViaScript; }
bool isIcon() const { return m_relAttribute.m_isIcon; }
private:
virtual void parseMappedAttribute(Attribute*);
#if ENABLE(LINK_PREFETCH)
void onloadTimerFired(Timer<HTMLLinkElement>*);
#endif
bool checkBeforeLoadEvent();
void process();
static void processCallback(Node*);
virtual void insertedIntoDocument();
virtual void removedFromDocument();
// from CachedResourceClient
virtual void setCSSStyleSheet(const String& href, const KURL& baseURL, const String& charset, const CachedCSSStyleSheet* sheet);
#if ENABLE(LINK_PREFETCH)
virtual void notifyFinished(CachedResource*);
#endif
virtual bool sheetLoaded();
bool isAlternate() const { return m_disabledState == Unset && m_relAttribute.m_isAlternate; }
void setDisabledState(bool _disabled);
virtual bool isURLAttribute(Attribute*) const;
public:
static void tokenizeRelAttribute(const AtomicString& value, RelAttribute&);
private:
virtual void addSubresourceAttributeURLs(ListHashSet<KURL>&) const;
virtual void finishParsingChildren();
enum PendingSheetType { None, NonBlocking, Blocking };
void addPendingSheet(PendingSheetType);
void removePendingSheet();
private:
HTMLLinkElement(const QualifiedName&, Document*, bool createdByParser);
enum DisabledState {
Unset,
EnabledViaScript,
Disabled
};
CachedResourceHandle<CachedCSSStyleSheet> m_cachedSheet;
RefPtr<CSSStyleSheet> m_sheet;
#if ENABLE(LINK_PREFETCH)
CachedResourceHandle<CachedResource> m_cachedLinkResource;
Timer<HTMLLinkElement> m_onloadTimer;
#endif
KURL m_url;
String m_type;
String m_media;
DisabledState m_disabledState;
RelAttribute m_relAttribute;
bool m_loading;
bool m_createdByParser;
bool m_isInShadowTree;
PendingSheetType m_pendingSheetType;
};
} //namespace
#endif
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