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 * in the documentation and/or other materials provided with the
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 * this software without specific prior written permission.
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#ifndef SVGMatrixTearOff_h
#define SVGMatrixTearOff_h

#include "bindings/core/v8/ExceptionState.h"
#include "bindings/core/v8/ScriptWrappable.h"
#include "platform/transforms/AffineTransform.h"
#include "wtf/RefCounted.h"

namespace blink {

class SVGTransformTearOff;

// SVGMatrixTearOff wraps a AffineTransform for Javascript.
// Its instance can either hold a static value, or this can be teared off from |SVGTransform.matrix|.
// This does not derive from SVGPropertyTearOff, as its instances are never tied to an animated property nor an XML attribute.
class SVGMatrixTearOff FINAL : public RefCounted<SVGMatrixTearOff>, public ScriptWrappable {
public:
    static PassRefPtr<SVGMatrixTearOff> create(const AffineTransform& value)
    {
        return adoptRef(new SVGMatrixTearOff(value));
    }

    static PassRefPtr<SVGMatrixTearOff> create(SVGTransformTearOff* target)
    {
        return adoptRef(new SVGMatrixTearOff(target));
    }

    ~SVGMatrixTearOff();

    double a() { return value().a(); }
    double b() { return value().b(); }
    double c() { return value().c(); }
    double d() { return value().d(); }
    double e() { return value().e(); }
    double f() { return value().f(); }

    void setA(double, ExceptionState&);
    void setB(double, ExceptionState&);
    void setC(double, ExceptionState&);
    void setD(double, ExceptionState&);
    void setE(double, ExceptionState&);
    void setF(double, ExceptionState&);

    PassRefPtr<SVGMatrixTearOff> translate(double tx, double ty);
    PassRefPtr<SVGMatrixTearOff> scale(double);
    PassRefPtr<SVGMatrixTearOff> scaleNonUniform(double sx, double sy);
    PassRefPtr<SVGMatrixTearOff> rotate(double);
    PassRefPtr<SVGMatrixTearOff> flipX();
    PassRefPtr<SVGMatrixTearOff> flipY();
    PassRefPtr<SVGMatrixTearOff> skewX(double);
    PassRefPtr<SVGMatrixTearOff> skewY(double);
    PassRefPtr<SVGMatrixTearOff> multiply(PassRefPtr<SVGMatrixTearOff>);
    PassRefPtr<SVGMatrixTearOff> inverse(ExceptionState&);
    PassRefPtr<SVGMatrixTearOff> rotateFromVector(double x, double y, ExceptionState&);

    SVGTransformTearOff* contextTransform() { return m_contextTransform; }

    const AffineTransform& value() const;

private:
    SVGMatrixTearOff(const AffineTransform&);
    SVGMatrixTearOff(SVGTransformTearOff*);

    AffineTransform* mutableValue();
    void commitChange();

    AffineTransform m_staticValue;

    // FIXME: oilpan: This is raw-ptr to avoid reference cycles. Should be Member in oilpan.
    SVGTransformTearOff* m_contextTransform;
};

} // namespace blink

#endif // SVGMatrixTearOff_h_
