File indexing completed on 2024-04-28 15:24:43

 /*
     Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
                   2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
 
     This file is part of the KDE project
 
     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 SVGUseElement : public SVGStyledTransformableElement,
     public SVGTests,
     public SVGLangSpace,
     public SVGExternalResourcesRequired,
     public SVGURIReference
 {
 public:
     SVGUseElement(const QualifiedName &, Document *);
     virtual ~SVGUseElement();
 
     SVGElementInstance *instanceRoot() const;
     SVGElementInstance *animatedInstanceRoot() const;
 
     bool isValid() const override
     {
         return SVGTests::isValid();
     }
 
     void insertedIntoDocument() override;
     void removedFromDocument() override;
     void buildPendingResource() override;
 
     void parseMappedAttribute(MappedAttribute *) override;
     using DOM::NodeImpl::childrenChanged;
     void childrenChanged(bool changedByParser = false, Node *beforeChange = nullptr, Node *afterChange = nullptr, int childCountDelta = 0) override;
 
     void svgAttributeChanged(const QualifiedName &) override;
     void recalcStyle(StyleChange = NoChange) override;
 
     RenderObject *createRenderer(RenderArena *, RenderStyle *) override;
     void attach() override;
     void detach() override;
 
     Path toClipPath() const override;
 
     static void removeDisallowedElementsFromSubtree(Node *element);
 
     // KHTML ElementImpl pure virtual method
     quint32 id() const override
     {
         return SVGNames::useTag.id();
     }
 protected:
     const SVGElement *contextElement() const override
     {
         return this;
     }
 
 private:
     ANIMATED_PROPERTY_FORWARD_DECLARATIONS(SVGExternalResourcesRequired, bool, ExternalResourcesRequired, externalResourcesRequired)
     ANIMATED_PROPERTY_FORWARD_DECLARATIONS(SVGURIReference, String, Href, href)
 
     ANIMATED_PROPERTY_DECLARATIONS(SVGUseElement, SVGLength, SVGLength, X, x)
     ANIMATED_PROPERTY_DECLARATIONS(SVGUseElement, SVGLength, SVGLength, Y, y)
     ANIMATED_PROPERTY_DECLARATIONS(SVGUseElement, SVGLength, SVGLength, Width, width)
     ANIMATED_PROPERTY_DECLARATIONS(SVGUseElement, SVGLength, SVGLength, Height, height)
 
 private:
     friend class SVGElement;
     SVGElementInstance *instanceForShadowTreeElement(Node *element) const;
 
 private:
     // Instance tree handling
     void buildInstanceTree(SVGElement *target, SVGElementInstance *targetInstance, bool &foundCycle);
     void handleDeepUseReferencing(SVGElement *use, SVGElementInstance *targetInstance, bool &foundCycle);
 
     // Shadow tree handling
     PassRefPtr<SVGSVGElement> buildShadowTreeForSymbolTag(SVGElement *target, SVGElementInstance *targetInstance);
     void alterShadowTreeForSVGTag(SVGElement *target);
 
     void buildShadowTree(SVGElement *target, SVGElementInstance *targetInstance);
 
 #if ENABLE(SVG) && ENABLE(SVG_USE)
     void expandUseElementsInShadowTree(Node *element);
     void expandSymbolElementsInShadowTree(Node *element);
 #endif
 
     void attachShadowTree();
 
     // "Tree connector"
     void associateInstancesWithShadowTreeElements(Node *target, SVGElementInstance *targetInstance);
 
     SVGElementInstance *instanceForShadowTreeElement(Node *element, SVGElementInstance *instance) const;
     void transferUseAttributesToReplacedElement(SVGElement *from, SVGElement *to) const;
 
     RefPtr<SVGElement> m_shadowTreeRootElement;
     RefPtr<SVGElementInstance> m_targetElementInstance;
 };
 
 } // namespace WebCore
 
 #endif // ENABLE(SVG)
 #endif