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/*
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006, 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.
*/
#ifndef SVGUseElement_h
#define SVGUseElement_h
#if ENABLE(SVG)
#include "CachedResourceHandle.h"
#include "CachedSVGDocumentClient.h"
#include "SVGAnimatedBoolean.h"
#include "SVGAnimatedLength.h"
#include "SVGExternalResourcesRequired.h"
#include "SVGGraphicsElement.h"
#include "SVGNames.h"
#include "SVGURIReference.h"
namespace WebCore {
class CachedSVGDocument;
class SVGElementInstance;
class SVGUseElement FINAL : public SVGGraphicsElement,
public SVGExternalResourcesRequired,
public SVGURIReference,
public CachedSVGDocumentClient {
public:
static PassRefPtr<SVGUseElement> create(const QualifiedName&, Document*, bool wasInsertedByParser);
virtual ~SVGUseElement();
SVGElementInstance* instanceRoot();
SVGElementInstance* animatedInstanceRoot() const;
SVGElementInstance* instanceForShadowTreeElement(Node*) const;
void invalidateShadowTree();
void invalidateDependentShadowTrees();
RenderObject* rendererClipChild() const;
private:
SVGUseElement(const QualifiedName&, Document*, bool wasInsertedByParser);
virtual bool isValid() const { return SVGTests::isValid(); }
virtual bool supportsFocus() const OVERRIDE { return true; }
virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
virtual void removedFrom(ContainerNode*) OVERRIDE;
virtual void buildPendingResource();
bool isSupportedAttribute(const QualifiedName&);
virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
virtual void svgAttributeChanged(const QualifiedName&);
virtual bool willRecalcStyle(StyleChange);
virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
virtual void toClipPath(Path&);
void clearResourceReferences();
void buildShadowAndInstanceTree(SVGElement* target);
void detachInstance();
virtual bool haveLoadedRequiredResources() { return SVGExternalResourcesRequired::haveLoadedRequiredResources(); }
virtual void finishParsingChildren();
virtual bool selfHasRelativeLengths() const;
// Instance tree handling
void buildInstanceTree(SVGElement* target, SVGElementInstance* targetInstance, bool& foundCycle, bool foundUse);
bool hasCycleUseReferencing(SVGUseElement*, SVGElementInstance* targetInstance, SVGElement*& newTarget);
// Shadow tree handling
void buildShadowTree(SVGElement* target, SVGElementInstance* targetInstance);
void expandUseElementsInShadowTree(Node* element);
void expandSymbolElementsInShadowTree(Node* element);
// "Tree connector"
void associateInstancesWithShadowTreeElements(Node* target, SVGElementInstance* targetInstance);
SVGElementInstance* instanceForShadowTreeElement(Node* element, SVGElementInstance* instance) const;
void transferUseAttributesToReplacedElement(SVGElement* from, SVGElement* to) const;
void transferEventListenersToShadowTree(SVGElementInstance* target);
BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGUseElement)
DECLARE_ANIMATED_LENGTH(X, x)
DECLARE_ANIMATED_LENGTH(Y, y)
DECLARE_ANIMATED_LENGTH(Width, width)
DECLARE_ANIMATED_LENGTH(Height, height)
DECLARE_ANIMATED_STRING(Href, href)
DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
END_DECLARE_ANIMATED_PROPERTIES
bool cachedDocumentIsStillLoading();
Document* externalDocument() const;
bool instanceTreeIsLoading(SVGElementInstance*);
virtual void notifyFinished(CachedResource*);
Document* referencedDocument() const;
void setCachedDocument(CachedResourceHandle<CachedSVGDocument>);
// SVGExternalResourcesRequired
virtual void setHaveFiredLoadEvent(bool haveFiredLoadEvent) { m_haveFiredLoadEvent = haveFiredLoadEvent; }
virtual bool isParserInserted() const { return m_wasInsertedByParser; }
virtual bool haveFiredLoadEvent() const { return m_haveFiredLoadEvent; }
virtual Timer<SVGElement>* svgLoadEventTimer() OVERRIDE { return &m_svgLoadEventTimer; }
bool m_wasInsertedByParser;
bool m_haveFiredLoadEvent;
bool m_needsShadowTreeRecreation;
RefPtr<SVGElementInstance> m_targetElementInstance;
CachedResourceHandle<CachedSVGDocument> m_cachedDocument;
Timer<SVGElement> m_svgLoadEventTimer;
};
inline SVGUseElement* toSVGUseElement(Node* node)
{
ASSERT_WITH_SECURITY_IMPLICATION(!node || node->hasTagName(SVGNames::useTag));
return static_cast<SVGUseElement*>(node);
}
}
#endif
#endif
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