#pragma once

#ifndef TDOUBLEPARAMRELAYPROPERTY_H

#define TDOUBLEPARAMRELAYPROPERTY_H

// TnzCore includes

#include "tproperty.h"

// TnzBase includes

#include "tdoubleparam.h"

#undef DVAPI

#undef DVVAR

#ifdef TPARAM_EXPORTS

#define DVAPI DV_EXPORT_API

#define DVVAR DV_EXPORT_VAR

#else

#define DVAPI DV_IMPORT_API

#define DVVAR DV_IMPORT_VAR

#endif

//*****************************************************************************

//    TDoubleParamRelayProperty  declaration

//*****************************************************************************

//! The TDoubleParamRelayProperty is a TProperty heir which can be used as

//! intermediary between a TDoubleParam instance and its GUI viewers.

class DVAPI TDoubleParamRelayProperty final : public TProperty,

                                              public TParamObserver {

  TDoubleParamP m_param;  //!< The referenced param

  double m_frame;         //!< Frame at which m_param returns values

public:

  class Visitor {

  public:

    virtual void visit(TDoubleParamRelayProperty *p) = 0;

  };

public:

  TDoubleParamRelayProperty(const std::string &name,

                            TDoubleParamP param = TDoubleParamP());

  ~TDoubleParamRelayProperty();

  TDoubleParamRelayProperty(const TDoubleParamRelayProperty &other);

  TDoubleParamRelayProperty &operator=(const TDoubleParamRelayProperty &other);

  TProperty *clone() const override;

  std::string getValueAsString() override;

  void setParam(const TDoubleParamP ¶m);

  const TDoubleParamP &getParam() const { return m_param; }

  void setValue(double v);

  double getValue() const;

  double frame() const { return m_frame; }

  double &frame() { return m_frame; }

  void accept(TProperty::Visitor &v) override;

  void onChange(const TParamChange &) override;

};

#endif  // TDOUBLEPARAMRELAYPROPERTY_H