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

Source/core/svg/SVGLengthList.cpp

 /*
  * Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 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.
  */
 
 #include "config.h"
 #include "core/svg/SVGLengthList.h"
 
-#include "bindings/v8/ExceptionState.h"
+#include "bindings/v8/ExceptionStatePlaceholder.h"
+#include "core/svg/SVGAnimationElement.h"
 #include "core/svg/SVGParserUtilities.h"
 #include "wtf/text/StringBuilder.h"
 
 namespace WebCore {
 
-template<typename CharType>
-void SVGLengthList::parseInternal(const CharType*& ptr, const CharType* end, SVGLengthMode mode)
+inline PassRefPtr<SVGLengthList> toSVGLengthList(PassRefPtr<NewSVGPropertyBase> passBase)
 {
-    TrackExceptionState exceptionState;
+    RefPtr<NewSVGPropertyBase> base = passBase;
+    ASSERT(base->type() == SVGLengthList::classType());
+    return static_pointer_cast<SVGLengthList>(base.release());
+}
 
+SVGLengthList::SVGLengthList(SVGLengthMode mode)
+    : m_mode(mode)
+{
+}
+
+SVGLengthList::~SVGLengthList()
+{
+}
+
+PassRefPtr<SVGLengthList> SVGLengthList::clone()
+{
+    RefPtr<SVGLengthList> ret = SVGLengthList::create(m_mode);
+    ret->deepCopy(this);
+    return ret.release();
+}
+
+PassRefPtr<NewSVGPropertyBase> SVGLengthList::cloneForAnimation(const String& value) const
+{
+    RefPtr<SVGLengthList> ret = SVGLengthList::create(m_mode);
+    ret->setValueAsString(value, IGNORE_EXCEPTION);
+    return ret.release();
+}
+
+String SVGLengthList::valueAsString() const
+{
+    StringBuilder builder;
+
+    Vector<RefPtr<SVGLength> >::const_iterator it = m_values.begin();
+    Vector<RefPtr<SVGLength> >::const_iterator itEnd = m_values.end();
+    if (it != itEnd) {
+        builder.append((*it++)->valueAsString());
+
+        for (; it != itEnd; ++it) {
+            builder.append(' ');
+            builder.append((*it)->valueAsString());
+        }
+    }
+
+    return builder.toString();
+}
+
+template <typename CharType>
+void SVGLengthList::parseInternal(const CharType*& ptr, const CharType* end, ExceptionState& exceptionState)
+{
+    m_values.clear();
     while (ptr < end) {
         const CharType* start = ptr;
         while (ptr < end && *ptr != ',' && !isSVGSpace(*ptr))
             ptr++;
         if (ptr == start)
             break;
 
-        SVGLength length(mode);
+        RefPtr<SVGLength> length = SVGLength::create(m_mode);
         String valueString(start, ptr - start);
         if (valueString.isEmpty())
             return;
-        length.setValueAsString(valueString, exceptionState);
+        length->setValueAsString(valueString, exceptionState);
         if (exceptionState.hadException())
             return;
-        append(length);
+        m_values.append(length);
         skipOptionalSVGSpacesOrDelimiter(ptr, end);
     }
 }
 
-void SVGLengthList::parse(const String& value, SVGLengthMode mode)
+void SVGLengthList::setValueAsString(const String& value, ExceptionState& exceptionState)
 {
-    clear();
     if (value.isEmpty())
         return;
     if (value.is8Bit()) {
         const LChar* ptr = value.characters8();
         const LChar* end = ptr + value.length();
-        parseInternal(ptr, end, mode);
+        parseInternal(ptr, end, exceptionState);
     } else {
         const UChar* ptr = value.characters16();
         const UChar* end = ptr + value.length();
-        parseInternal(ptr, end, mode);
+        parseInternal(ptr, end, exceptionState);
     }
 }
 
-String SVGLengthList::valueAsString() const
+void SVGLengthList::add(PassRefPtr<NewSVGPropertyBase> other, SVGElement* contextElement)
 {
-    StringBuilder builder;
+    RefPtr<SVGLengthList> otherList = toSVGLengthList(other);
 
-    unsigned size = this->size();
-    for (unsigned i = 0; i < size; ++i) {
-        if (i > 0)
-            builder.append(' ');
+    if (m_values.size() != otherList->m_values.size())
+        return;
 
-        builder.append(at(i).valueAsString());
+    SVGLengthContext lengthContext(contextElement);
+    for (size_t i = 0; i < m_values.size(); ++i)
+        m_values[i]->setValue(m_values[i]->value(lengthContext) + otherList->m_values[i]->value(lengthContext), lengthContext, ASSERT_NO_EXCEPTION);
+}
+
+bool SVGLengthList::adjustFromToListValues(PassRefPtr<SVGLengthList> passFromList, PassRefPtr<SVGLengthList> passToList, float percentage, bool isToAnimation, bool resizeAnimatedListIfNeeded)
+{
+    RefPtr<SVGLengthList> fromList = passFromList;
+    RefPtr<SVGLengthList> toList = passToList;
+
+    // If no 'to' value is given, nothing to animate.
+    size_t toListSize = toList->m_values.size();
+    if (!toListSize)
+        return false;
+
+    // If the 'from' value is given and it's length doesn't match the 'to' value list length, fallback to a discrete animation.
+    size_t fromListSize = fromList->m_values.size();
+    if (fromListSize != toListSize && fromListSize) {
+        if (percentage < 0.5) {
+            if (!isToAnimation)
+                deepCopy(fromList);
+        } else {
+            deepCopy(toList);
+        }
+
+        return false;
     }
 
-    return builder.toString();
+    ASSERT(!fromListSize || fromListSize == toListSize);
+    if (resizeAnimatedListIfNeeded && m_values.size() < toListSize) {
+        size_t paddingCount = toListSize - m_values.size();
+        for (size_t i = 0; i < paddingCount; ++i)
+            m_values.append(SVGLength::create(m_mode));
+    }
+
+    return true;
 }
 
+void SVGLengthList::calculateAnimatedValue(SVGAnimationElement* animationElement, float percentage, unsigned repeatCount, PassRefPtr<NewSVGPropertyBase> fromValue, PassRefPtr<NewSVGPropertyBase> toValue, PassRefPtr<NewSVGPropertyBase> toAtEndOfDurationValue, SVGElement* contextElement)
+{
+    RefPtr<SVGLengthList> fromList = toSVGLengthList(fromValue);
+    RefPtr<SVGLengthList> toList = toSVGLengthList(toValue);
+    RefPtr<SVGLengthList> toAtEndOfDurationList = toSVGLengthList(toAtEndOfDurationValue);
+
+    SVGLengthContext lengthContext(contextElement);
+    ASSERT(m_mode == SVGLength::lengthModeForAnimatedLengthAttribute(animationElement->attributeName()));
+
+    size_t fromLengthListSize = fromList->m_values.size();
+    size_t toLengthListSize = toList->m_values.size();
+    size_t toAtEndOfDurationListSize = toAtEndOfDurationList->m_values.size();
+
+    if (!adjustFromToListValues(fromList, toList, percentage, animationElement->animationMode() == ToAnimation, true))
+        return;
+
+    for (size_t i = 0; i < toLengthListSize; ++i) {
+        float animatedNumber = m_values[i]->value(lengthContext);
+        SVGLengthType unitType = toList->m_values[i]->unitType();
+        float effectiveFrom = 0;
+        if (fromLengthListSize) {
+            if (percentage < 0.5)
+                unitType = fromList->m_values[i]->unitType();
+            effectiveFrom = fromList->m_values[i]->value(lengthContext);
+        }
+        float effectiveTo = toList->m_values[i]->value(lengthContext);
+        float effectiveToAtEnd = i < toAtEndOfDurationListSize ? toAtEndOfDurationList->m_values[i]->value(lengthContext) : 0;
+
+        animationElement->animateAdditiveNumber(percentage, repeatCount, effectiveFrom, effectiveTo, effectiveToAtEnd, animatedNumber);
+        m_values[i]->setUnitType(unitType);
+        m_values[i]->setValue(animatedNumber, lengthContext, ASSERT_NO_EXCEPTION);
+    }
 }
+
+float SVGLengthList::calculateDistance(PassRefPtr<NewSVGPropertyBase> to, SVGElement*)
+{
+    // FIXME: Distance calculation is not possible for SVGLengthList right now. We need the distance for every single value.
+    return -1;
+}
+}