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 *
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 * in the documentation and/or other materials provided with the
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#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_SVG_PROPERTIES_SVG_PROPERTY_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_SVG_PROPERTIES_SVG_PROPERTY_H_

#include <concepts>

#include "third_party/blink/renderer/core/svg/properties/svg_property_info.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"

namespace blink {

class SVGElement;
struct SMILAnimationEffectParameters;

class SVGPropertyBase : public GarbageCollected<SVGPropertyBase> {
 public:
  // Properties do not have a primitive type by default
  typedef void PrimitiveType;

  SVGPropertyBase(const SVGPropertyBase&) = delete;
  SVGPropertyBase& operator=(const SVGPropertyBase&) = delete;

  virtual ~SVGPropertyBase() = default;

  virtual String ValueAsString() const = 0;

  // Set the initial value based on a per-type defined (encoded) value. Overload
  // this in the specific subclass to handle initial values, and set
  // kInitialValueBits appropriately.
  static constexpr int kInitialValueBits = 0;
  void SetInitial(unsigned) {}

  // FIXME: remove below and just have this inherit AnimatableValue in
  // WebAnimations transition.
  // Returns false if addition fails (e.g. structurally incompatible values).
  virtual bool Add(const SVGPropertyBase*, const SVGElement*) = 0;
  virtual void CalculateAnimatedValue(
      const SMILAnimationEffectParameters&,
      float percentage,
      unsigned repeat_count,
      const SVGPropertyBase* from,
      const SVGPropertyBase* to,
      const SVGPropertyBase* to_at_end_of_duration_value,
      const SVGElement*) = 0;
  virtual float CalculateDistance(const SVGPropertyBase* to,
                                  const SVGElement*) const = 0;

  virtual AnimatedPropertyType GetType() const = 0;

  virtual void Trace(Visitor* visitor) const {}

 protected:
  SVGPropertyBase() = default;
};

template <typename T>
  requires(std::derived_from<T, SVGPropertyBase>)
struct ThreadingTrait<T> {
  static constexpr ThreadAffinity kAffinity = kMainThreadOnly;
};

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_CORE_SVG_PROPERTIES_SVG_PROPERTY_H_