WebCore/svg/SVGElement.h

   1 /*
   2     Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
   3                   2004, 2005, 2006 Rob Buis <buis@kde.org>
   4     Copyright (C) 2009 Apple Inc. All rights reserved.
   5
   6     This library is free software; you can redistribute it and/or
   7     modify it under the terms of the GNU Library General Public
   8     License as published by the Free Software Foundation; either
   9     version 2 of the License, or (at your option) any later version.
  10
  11     This library is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14     Library General Public License for more details.
  15
  16     You should have received a copy of the GNU Library General Public License
  17     along with this library; see the file COPYING.LIB.  If not, write to
  18     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19     Boston, MA 02110-1301, USA.
  20 */
  21
  22 #ifndef SVGElement_h
  23 #define SVGElement_h
  24
  25 #if ENABLE(SVG)
  26 #include "StyledElement.h"
  27 #include "SVGAnimatedProperty.h"
  28 #include "SynchronizablePropertyController.h"
  29
  30 namespace WebCore {
  31
  32     class CSSCursorImageValue;
  33     class Document;
  34     class SVGCursorElement;
  35     class SVGDocumentExtensions;
  36     class SVGElementInstance;
  37     class SVGSVGElement;
  38     class TransformationMatrix;
  39
  40     class SVGElement : public StyledElement {
  41     public:
  42         static PassRefPtr<SVGElement> create(const QualifiedName&, Document*);
  43         virtual ~SVGElement();
  44
  45         String xmlbase() const;
  46         void setXmlbase(const String&, ExceptionCode&);
  47
  48         SVGSVGElement* ownerSVGElement() const;
  49         SVGElement* viewportElement() const;
  50
  51         SVGDocumentExtensions* accessDocumentSVGExtensions() const;
  52
  53         virtual void parseMappedAttribute(MappedAttribute*);
  54
  55         virtual bool isStyled() const { return false; }
  56         virtual bool isStyledTransformable() const { return false; }
  57         virtual bool isStyledLocatable() const { return false; }
  58         virtual bool isSVG() const { return false; }
  59         virtual bool isFilterEffect() const { return false; }
  60         virtual bool isGradientStop() const { return false; }
  61         virtual bool isTextContent() const { return false; }
  62
  63         void setShadowParentNode(ContainerNode* node) { m_shadowParent = node; }
  64
  65         // For SVGTests
  66         virtual bool isValid() const { return true; }
  67
  68         virtual bool rendererIsNeeded(RenderStyle*) { return false; }
  69         virtual bool childShouldCreateRenderer(Node*) const;
  70
  71         virtual void svgAttributeChanged(const QualifiedName&) { }
  72
  73         void sendSVGLoadEventIfPossible(bool sendParentLoadEvents = false);
  74
  75         virtual TransformationMatrix* supplementalTransform() { return 0; }
  76
  77         virtual void setSynchronizedSVGAttributes(bool) const;
  78
  79         HashSet<SVGElementInstance*> instancesForElement() const;
  80
  81         void setCursorElement(SVGCursorElement* cursorElement) { m_cursorElement = cursorElement; }
  82         void setCursorImageValue(CSSCursorImageValue* cursorImageValue) { m_cursorImageValue = cursorImageValue; }
  83
  84         SynchronizablePropertyController& propertyController() const { return m_propertyController; }
  85
  86     protected:
  87         SVGElement(const QualifiedName&, Document*);
  88
  89         virtual void finishParsingChildren();
  90         virtual void insertedIntoDocument();
  91         virtual void attributeChanged(Attribute*, bool preserveDecls = false);
  92         virtual void updateAnimatedSVGAttribute(const String&) const;
  93
  94     private:
  95         friend class SVGElementInstance;
  96
  97         virtual bool isSVGElement() const { return true; }
  98
  99         virtual bool isSupported(StringImpl* feature, StringImpl* version) const;
 100
 101         virtual bool isShadowNode() const { return m_shadowParent; }
 102         virtual Node* shadowParentNode() { return m_shadowParent; }
 103         virtual ContainerNode* eventParentNode();
 104
 105         virtual void buildPendingResource() { }
 106
 107         void mapInstanceToElement(SVGElementInstance*);
 108         void removeInstanceMapping(SVGElementInstance*);
 109
 110         virtual bool haveLoadedRequiredResources();
 111
 112         ContainerNode* m_shadowParent;
 113         mutable SynchronizablePropertyController m_propertyController;
 114
 115         SVGCursorElement* m_cursorElement;
 116         CSSCursorImageValue* m_cursorImageValue;
 117
 118         HashSet<SVGElementInstance*> m_elementInstances;
 119     };
 120
 121 } // namespace WebCore
 122
 123 #endif // ENABLE(SVG)
 124 #endif // SVGElement_h