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

Source/core/svg/SVGTextContentElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 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 18 matching lines @@
 #include "bindings/v8/ExceptionStatePlaceholder.h"
 #include "core/editing/FrameSelection.h"
 #include "core/frame/Frame.h"
 #include "core/rendering/RenderObject.h"
 #include "core/rendering/svg/RenderSVGResource.h"
 #include "core/rendering/svg/SVGTextQuery.h"
 #include "core/svg/SVGElementInstance.h"
 
 namespace WebCore {
 
-// Define custom animated property 'textLength'.
-const SVGPropertyInfo* SVGTextContentElement::textLengthPropertyInfo()
-{
-    static const SVGPropertyInfo* s_propertyInfo = 0;
-    if (!s_propertyInfo) {
-        s_propertyInfo = new SVGPropertyInfo(AnimatedLength,
-                                             PropertyIsReadWrite,
-                                             SVGNames::textLengthAttr,
-                                             SVGNames::textLengthAttr.localName(),
-                                             &SVGTextContentElement::synchronizeTextLength,
-                                             &SVGTextContentElement::lookupOrCreateTextLengthWrapper);
+// Animated property definitions
+
+// SVGTextContentElement's 'textLength' attribute needs special handling.
+// It should return getComputedTextLength() when textLength is not specified manually.
+class SVGAnimatedTextLength : public SVGAnimatedLength {
+public:
+    static PassRefPtr<SVGAnimatedTextLength> create(SVGTextContentElement* contextElement)
+    {
+        return adoptRef(new SVGAnimatedTextLength(contextElement));
     }
-    return s_propertyInfo;
-}
 
-// Animated property definitions
+    virtual SVGLengthTearOff* baseVal()
+    {
+        SVGTextContentElement* textContentElement = toSVGTextContentElement(contextElement());
+        if (!textContentElement->textLengthIsSpecifiedByUser())
+            baseValue()->newValueSpecifiedUnits(LengthTypeNumber, textContentElement->getComputedTextLength());
+
+        return SVGAnimatedLength::baseVal();
+    }
+
+private:
+    SVGAnimatedTextLength(SVGTextContentElement* contextElement)
+        : SVGAnimatedLength(contextElement, SVGNames::textLengthAttr, SVGLength::create(LengthModeOther))
+    {
+    }
+};
+
 DEFINE_ANIMATED_ENUMERATION(SVGTextContentElement, SVGNames::lengthAdjustAttr, LengthAdjust, lengthAdjust, SVGLengthAdjustType)
 
 BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGTextContentElement)
-    REGISTER_LOCAL_ANIMATED_PROPERTY(textLength)
     REGISTER_LOCAL_ANIMATED_PROPERTY(lengthAdjust)
     REGISTER_PARENT_ANIMATED_PROPERTIES(SVGGraphicsElement)
 END_REGISTER_ANIMATED_PROPERTIES
 
 SVGTextContentElement::SVGTextContentElement(const QualifiedName& tagName, Document& document)
     : SVGGraphicsElement(tagName, document)
-    , m_textLength(LengthModeOther)
-    , m_specifiedTextLength(LengthModeOther)
+    , m_textLength(SVGAnimatedTextLength::create(this))
+    , m_textLengthIsSpecifiedByUser(false)
     , m_lengthAdjust(SVGLengthAdjustSpacing)
 {
     ScriptWrappable::init(this);
+
+    addToPropertyMap(m_textLength);
     registerAnimatedPropertiesForSVGTextContentElement();
 }
 
-void SVGTextContentElement::synchronizeTextLength(SVGElement* contextElement)
-{
-    ASSERT(contextElement);
-    SVGTextContentElement* ownerType = toSVGTextContentElement(contextElement);
-    if (!ownerType->m_textLength.shouldSynchronize)
-        return;
-    AtomicString value(SVGPropertyTraits<SVGLength>::toString(ownerType->m_specifiedTextLength));
-    ownerType->m_textLength.synchronize(ownerType, textLengthPropertyInfo()->attributeName, value);
-}
-
-PassRefPtr<SVGAnimatedProperty> SVGTextContentElement::lookupOrCreateTextLengthWrapper(SVGElement* contextElement)
-{
-    ASSERT(contextElement);
-    SVGTextContentElement* ownerType = toSVGTextContentElement(contextElement);
-    return SVGAnimatedProperty::lookupOrCreateWrapper<SVGTextContentElement, SVGAnimatedLength, SVGLength>
-           (ownerType, textLengthPropertyInfo(), ownerType->m_textLength.value);
-}
-
-PassRefPtr<SVGAnimatedLength> SVGTextContentElement::textLength()
-{
-    DEFINE_STATIC_LOCAL(SVGLength, defaultTextLength, (LengthModeOther));
-    if (m_specifiedTextLength == defaultTextLength)
-        m_textLength.value.newValueSpecifiedUnits(LengthTypeNumber, getComputedTextLength(), ASSERT_NO_EXCEPTION);
-
-    m_textLength.shouldSynchronize = true;
-    return static_pointer_cast<SVGAnimatedLength>(lookupOrCreateTextLengthWrapper(this));
-
-}
-
 unsigned SVGTextContentElement::getNumberOfChars()
 {
     document().updateLayoutIgnorePendingStylesheets();
     return SVGTextQuery(renderer()).numberOfCharacters();
 }
 
 float SVGTextContentElement::getComputedTextLength()
 {
     document().updateLayoutIgnorePendingStylesheets();
     return SVGTextQuery(renderer()).textLength();
@@ skipping 131 matching lines @@
 {
     SVGParsingError parseError = NoError;
 
     if (!isSupportedAttribute(name))
         SVGGraphicsElement::parseAttribute(name, value);
     else if (name == SVGNames::lengthAdjustAttr) {
         SVGLengthAdjustType propertyValue = SVGPropertyTraits<SVGLengthAdjustType>::fromString(value);
         if (propertyValue > 0)
             setLengthAdjustBaseValue(propertyValue);
     } else if (name == SVGNames::textLengthAttr) {
-        m_textLength.value = SVGLength::construct(LengthModeOther, value, parseError, ForbidNegativeLengths);
+        m_textLength->setBaseValueAsString(value, ForbidNegativeLengths, parseError);
     } else if (name.matches(XMLNames::spaceAttr)) {
     } else
         ASSERT_NOT_REACHED();
 
     reportAttributeParsingError(parseError, name, value);
 }
 
 void SVGTextContentElement::svgAttributeChanged(const QualifiedName& attrName)
 {
     if (!isSupportedAttribute(attrName)) {
         SVGGraphicsElement::svgAttributeChanged(attrName);
         return;
     }
 
+    if (attrName == SVGNames::textLengthAttr)
+        m_textLengthIsSpecifiedByUser = true;
+
     SVGElementInstance::InvalidationGuard invalidationGuard(this);
 
-    if (attrName == SVGNames::textLengthAttr)
-        m_specifiedTextLength = m_textLength.value;
-
     if (RenderObject* renderer = this->renderer())
         RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
 }
 
 bool SVGTextContentElement::selfHasRelativeLengths() const
 {
     // Any element of the <text> subtree is advertized as using relative lengths.
     // On any window size change, we have to relayout the text subtree, as the
     // effective 'on-screen' font size may change.
     return true;
@@ skipping 10 matching lines @@
     SVGElement* element = toSVGElement(renderer->node());
     ASSERT(element);
 
     if (!element->isTextContent())
         return 0;
 
     return toSVGTextContentElement(element);
 }
 
 }