[SVG] SVGLength{,List} migration to new SVG property impl.

Source/core/svg/SVGTextContentElement.h

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2008 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,
@@ skipping 48 matching lines @@
     static SVGLengthAdjustType fromString(const String& value)
     {
         if (value == "spacingAndGlyphs")
             return SVGLengthAdjustSpacingAndGlyphs;
         if (value == "spacing")
             return SVGLengthAdjustSpacing;
         return SVGLengthAdjustUnknown;
     }
 };
 
+class SVGAnimatedTextLength;
+
 class SVGTextContentElement : public SVGGraphicsElement,
                               public SVGExternalResourcesRequired {
 public:
     // Forward declare enumerations in the W3C naming scheme, for IDL generation.
     enum {
         LENGTHADJUST_UNKNOWN = SVGLengthAdjustUnknown,
         LENGTHADJUST_SPACING = SVGLengthAdjustSpacing,
         LENGTHADJUST_SPACINGANDGLYPHS = SVGLengthAdjustSpacingAndGlyphs
     };
 
     unsigned getNumberOfChars();
     float getComputedTextLength();
     float getSubStringLength(unsigned charnum, unsigned nchars, ExceptionState&);
     SVGPoint getStartPositionOfChar(unsigned charnum, ExceptionState&);
     SVGPoint getEndPositionOfChar(unsigned charnum, ExceptionState&);
     SVGRect getExtentOfChar(unsigned charnum, ExceptionState&);
     float getRotationOfChar(unsigned charnum, ExceptionState&);
     int getCharNumAtPosition(const SVGPoint&);
     void selectSubString(unsigned charnum, unsigned nchars, ExceptionState&);
 
     static SVGTextContentElement* elementFromRenderer(RenderObject*);
 
-    // textLength is not declared using the standard DECLARE_ANIMATED_LENGTH macro
-    // as its getter needs special handling (return getComputedTextLength(), instead of m_textLength).
-    SVGLength& specifiedTextLength() { return m_specifiedTextLength; }
-    PassRefPtr<SVGAnimatedLength> textLength();
-    static const SVGPropertyInfo* textLengthPropertyInfo();
+    SVGAnimatedLength* textLength() { return m_textLength.get(); }
+    bool textLengthIsSpecifiedByUser() { return m_textLengthIsSpecifiedByUser; }
 
 protected:
     SVGTextContentElement(const QualifiedName&, Document&);
 
     virtual bool isValid() const { return SVGTests::isValid(); }
 
     bool isSupportedAttribute(const QualifiedName&);
     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
     virtual void svgAttributeChanged(const QualifiedName&);
 
     virtual bool selfHasRelativeLengths() const;
 
 private:
     virtual bool isTextContent() const { return true; }
 
-    // Custom 'textLength' property
-    static void synchronizeTextLength(SVGElement* contextElement);
-    static PassRefPtr<SVGAnimatedProperty> lookupOrCreateTextLengthWrapper(SVGElement* contextElement);
-    mutable SVGSynchronizableAnimatedProperty<SVGLength> m_textLength;
-    SVGLength m_specifiedTextLength;
-
+    RefPtr<SVGAnimatedLength> m_textLength;
+    bool m_textLengthIsSpecifiedByUser;
     BEGIN_DECLARE_ANIMATED_PROPERTIES(SVGTextContentElement)
         DECLARE_ANIMATED_ENUMERATION(LengthAdjust, lengthAdjust, SVGLengthAdjustType)
         DECLARE_ANIMATED_BOOLEAN(ExternalResourcesRequired, externalResourcesRequired)
     END_DECLARE_ANIMATED_PROPERTIES
 };
 
 inline bool isSVGTextContentElement(const Node& node)
 {
     return node.isSVGElement() && toSVGElement(node).isTextContent();
 }
 
 DEFINE_NODE_TYPE_CASTS_WITH_FUNCTION(SVGTextContentElement);
 
 } // namespace WebCore
 
 #endif