SVG Web Animations: Add SVGNumberOptionalNumberInterpolationType

third_party/WebKit/Source/core/animation/NumberOptionalNumberSVGInterpolation.h

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef NumberOptionalNumberSVGInterpolation_h
-#define NumberOptionalNumberSVGInterpolation_h
-
-#include "core/animation/SVGInterpolation.h"
-#include "core/svg/SVGNumber.h"
-#include "core/svg/SVGNumberOptionalNumber.h"
-
-namespace blink {
-
-class SVGNumberOptionalNumber;
-
-class NumberOptionalNumberSVGInterpolation : public SVGInterpolation {
-public:
-    static PassRefPtr<NumberOptionalNumberSVGInterpolation> create(SVGPropertyBase* start, SVGPropertyBase* end, PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase> attribute)
-    {
-        return adoptRef(new NumberOptionalNumberSVGInterpolation(toInterpolableValue(start), toInterpolableValue(end), attribute));
-    }
-
-    PassRefPtrWillBeRawPtr<SVGPropertyBase> interpolatedValue(SVGElement&) const final
-    {
-        return fromInterpolableValue(*m_cachedValue);
-    }
-
-private:
-    NumberOptionalNumberSVGInterpolation(PassOwnPtr<InterpolableValue> start, PassOwnPtr<InterpolableValue> end, PassRefPtrWillBeRawPtr<SVGAnimatedPropertyBase> attribute)
-        : SVGInterpolation(start, end, attribute)
-    {
-    }
-
-    static PassOwnPtr<InterpolableValue> toInterpolableValue(SVGPropertyBase* value)
-    {
-        RefPtrWillBeRawPtr<SVGNumberOptionalNumber> numberOptionalNumber = toSVGNumberOptionalNumber(value);
-        OwnPtr<InterpolableList> result = InterpolableList::create(2);
-        result->set(0, InterpolableNumber::create(numberOptionalNumber->firstNumber()->value()));
-        result->set(1, InterpolableNumber::create(numberOptionalNumber->secondNumber()->value()));
-        return result.release();
-    }
-
-    static PassRefPtrWillBeRawPtr<SVGNumberOptionalNumber> fromInterpolableValue(const InterpolableValue& value)
-    {
-        const InterpolableList& list = toInterpolableList(value);
-        return SVGNumberOptionalNumber::create(
-            SVGNumber::create(toInterpolableNumber(list.get(0))->value()),
-            SVGNumber::create(toInterpolableNumber(list.get(1))->value()));
-    }
-};
-
-}
-
-#endif // NumberOptionalNumberSVGInterpolation_h