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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
#include "core/SVGNames.h"
#include "core/fetch/DocumentResource.h"
#include "core/svg/SVGAnimatedBoolean.h"
#include "core/svg/SVGAnimatedLength.h"
#include "core/svg/SVGGraphicsElement.h"
#include "core/svg/SVGURIReference.h"
#include "platform/heap/Handle.h"
namespace blink {
class DocumentResource;
class SVGUseElement final : public SVGGraphicsElement,
public SVGURIReference,
public DocumentResourceClient {
DEFINE_WRAPPERTYPEINFO();
WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(SVGUseElement);
public:
static PassRefPtrWillBeRawPtr<SVGUseElement> create(Document&);
virtual ~SVGUseElement();
void invalidateShadowTree();
RenderObject* rendererClipChild() const;
SVGAnimatedLength* x() const { return m_x.get(); }
SVGAnimatedLength* y() const { return m_y.get(); }
SVGAnimatedLength* width() const { return m_width.get(); }
SVGAnimatedLength* height() const { return m_height.get(); }
virtual void buildPendingResource() override;
virtual void trace(Visitor*) override;
private:
explicit SVGUseElement(Document&);
virtual bool isStructurallyExternal() const override { return !hrefString().isNull() && isExternalURIReference(hrefString(), document()); }
virtual InsertionNotificationRequest insertedInto(ContainerNode*) override;
virtual void removedFrom(ContainerNode*) override;
bool isSupportedAttribute(const QualifiedName&);
virtual void parseAttribute(const QualifiedName&, const AtomicString&) override;
virtual void svgAttributeChanged(const QualifiedName&) override;
virtual RenderObject* createRenderer(RenderStyle*) override;
virtual void toClipPath(Path&) override;
void clearResourceReferences();
void buildShadowAndInstanceTree(SVGElement* target);
void scheduleShadowTreeRecreation();
virtual bool haveLoadedRequiredResources() override { return !isStructurallyExternal() || m_haveFiredLoadEvent; }
virtual bool selfHasRelativeLengths() const override;
// Instance tree handling
bool buildShadowTree(SVGElement* target, SVGElement* targetInstance, bool foundUse);
bool hasCycleUseReferencing(SVGUseElement*, ContainerNode* targetInstance, SVGElement*& newTarget);
bool expandUseElementsInShadowTree(SVGElement*);
void expandSymbolElementsInShadowTree(SVGElement*);
void transferUseAttributesToReplacedElement(SVGElement* from, SVGElement* to) const;
void invalidateDependentShadowTrees();
bool resourceIsStillLoading();
Document* externalDocument() const;
bool instanceTreeIsLoading(SVGElement*);
virtual void notifyFinished(Resource*) override;
TreeScope* referencedScope() const;
void setDocumentResource(ResourcePtr<DocumentResource>);
virtual Timer<SVGElement>* svgLoadEventTimer() override { return &m_svgLoadEventTimer; }
RefPtrWillBeMember<SVGAnimatedLength> m_x;
RefPtrWillBeMember<SVGAnimatedLength> m_y;
RefPtrWillBeMember<SVGAnimatedLength> m_width;
RefPtrWillBeMember<SVGAnimatedLength> m_height;
bool m_haveFiredLoadEvent;
bool m_needsShadowTreeRecreation;
RefPtrWillBeMember<SVGElement> m_targetElementInstance;
ResourcePtr<DocumentResource> m_resource;
Timer<SVGElement> m_svgLoadEventTimer;
};
} // namespace blink
#endif // SVGUseElement_h
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