#ifndef SVGUseElement_h
#define SVGUseElement_h
#include "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"
namespace WebCore {
class DocumentResource;
class SVGElementInstance;
class SVGUseElement FINAL : public SVGGraphicsElement,
public SVGURIReference,
public DocumentResourceClient {
public:
static PassRefPtr<SVGUseElement> create(Document&, bool wasInsertedByParser);
virtual ~SVGUseElement();
SVGElementInstance* instanceRoot();
SVGElementInstance* animatedInstanceRoot() const;
SVGElementInstance* instanceForShadowTreeElement(Node*) const;
void invalidateShadowTree();
void invalidateDependentShadowTrees();
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;
private:
SVGUseElement(Document&, bool wasInsertedByParser);
virtual bool isStructurallyExternal() const OVERRIDE { return !hrefString().isNull() && isExternalURIReference(hrefString(), document()); }
virtual bool supportsFocus() const OVERRIDE { return hasFocusEventListeners(); }
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 detachInstance();
void scheduleShadowTreeRecreation();
virtual bool haveLoadedRequiredResources() OVERRIDE { return !isStructurallyExternal() || m_haveFiredLoadEvent; }
virtual void finishParsingChildren() OVERRIDE;
virtual bool selfHasRelativeLengths() const OVERRIDE;
void buildInstanceTree(SVGElement* target, SVGElementInstance* targetInstance, bool& foundCycle, bool foundUse);
bool hasCycleUseReferencing(SVGUseElement*, SVGElementInstance* targetInstance, SVGElement*& newTarget);
void buildShadowTree(SVGElement* target, SVGElementInstance* targetInstance);
void expandUseElementsInShadowTree(Node* element);
void expandSymbolElementsInShadowTree(Node* element);
void associateInstancesWithShadowTreeElements(Node* target, SVGElementInstance* targetInstance);
SVGElementInstance* instanceForShadowTreeElement(Node* element, SVGElementInstance* instance) const;
void transferUseAttributesToReplacedElement(SVGElement* from, SVGElement* to) const;
void transferEventListenersToShadowTree(SVGElementInstance* target);
bool isInUserAgentShadowTree() const;
RefPtr<SVGAnimatedLength> m_x;
RefPtr<SVGAnimatedLength> m_y;
RefPtr<SVGAnimatedLength> m_width;
RefPtr<SVGAnimatedLength> m_height;
bool resourceIsStillLoading();
Document* externalDocument() const;
bool instanceTreeIsLoading(SVGElementInstance*);
virtual void notifyFinished(Resource*) OVERRIDE;
Document* referencedDocument() const;
void setDocumentResource(ResourcePtr<DocumentResource>);
virtual Timer<SVGElement>* svgLoadEventTimer() OVERRIDE { return &m_svgLoadEventTimer; }
bool m_wasInsertedByParser;
bool m_haveFiredLoadEvent;
bool m_needsShadowTreeRecreation;
RefPtr<SVGElementInstance> m_targetElementInstance;
ResourcePtr<DocumentResource> m_resource;
Timer<SVGElement> m_svgLoadEventTimer;
};
}
#endif