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/*
Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
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 "SVGExternalResourcesRequired.h"
#include "SVGLangSpace.h"
#include "SVGStyledTransformableElement.h"
#include "SVGTests.h"
#include "SVGURIReference.h"
namespace WebCore {
class SVGElementInstance;
class SVGLength;
class SVGShadowTreeRootElement;
class SVGUseElement : public SVGStyledTransformableElement,
public SVGTests,
public SVGLangSpace,
public SVGExternalResourcesRequired,
public SVGURIReference {
public:
SVGUseElement(const QualifiedName&, Document*);
virtual ~SVGUseElement();
SVGElementInstance* instanceRoot() const;
SVGElementInstance* animatedInstanceRoot() const;
virtual bool isValid() const { return SVGTests::isValid(); }
virtual void insertedIntoDocument();
virtual void removedFromDocument();
virtual void buildPendingResource();
virtual void parseMappedAttribute(MappedAttribute*);
virtual void svgAttributeChanged(const QualifiedName&);
virtual void synchronizeProperty(const QualifiedName&);
virtual void recalcStyle(StyleChange = NoChange);
virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
virtual void attach();
virtual void detach();
virtual Path toClipPath() const;
RenderObject* rendererClipChild() const;
static void removeDisallowedElementsFromSubtree(Node* element);
SVGElementInstance* instanceForShadowTreeElement(Node* element) const;
void invalidateShadowTree();
private:
friend class RenderSVGShadowTreeRootContainer;
bool isPendingResource() const { return m_isPendingResource; }
void buildShadowAndInstanceTree(SVGShadowTreeRootElement*);
private:
virtual bool hasRelativeValues() const;
DECLARE_ANIMATED_PROPERTY(SVGUseElement, SVGNames::xAttr, SVGLength, X, x)
DECLARE_ANIMATED_PROPERTY(SVGUseElement, SVGNames::yAttr, SVGLength, Y, y)
DECLARE_ANIMATED_PROPERTY(SVGUseElement, SVGNames::widthAttr, SVGLength, Width, width)
DECLARE_ANIMATED_PROPERTY(SVGUseElement, SVGNames::heightAttr, SVGLength, Height, height)
// SVGURIReference
DECLARE_ANIMATED_PROPERTY(SVGUseElement, XLinkNames::hrefAttr, String, Href, href)
// SVGExternalResourcesRequired
DECLARE_ANIMATED_PROPERTY(SVGUseElement, SVGNames::externalResourcesRequiredAttr, bool, ExternalResourcesRequired, externalResourcesRequired)
private:
// Instance tree handling
void buildInstanceTree(SVGElement* target, SVGElementInstance* targetInstance, bool& foundCycle);
void handleDeepUseReferencing(SVGUseElement* use, SVGElementInstance* targetInstance, bool& foundCycle);
// Shadow tree handling
void buildShadowTree(SVGShadowTreeRootElement*, SVGElement* target, SVGElementInstance* targetInstance);
#if ENABLE(SVG) && ENABLE(SVG_USE)
void expandUseElementsInShadowTree(SVGShadowTreeRootElement*, Node* element);
void expandSymbolElementsInShadowTree(SVGShadowTreeRootElement*, Node* element);
#endif
// "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);
void updateContainerOffsets();
void updateContainerSizes();
bool m_isPendingResource;
bool m_needsShadowTreeRecreation;
String m_resourceId;
RefPtr<SVGElementInstance> m_targetElementInstance;
};
}
#endif
#endif
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