#pragma once
#include "DbEvalGraph.h"
#include "DbBlockElement.h"

/** \details
    Helper class representing one of the coordinates of the grip point
    Serves as a connection between the grip point and the actions/parameters affecting it
    Every grip point creates 2 OdDbBlockGripExpr when added to the graph
    <group OdDb_Classes>
*/
class DYNBLOCKS_EXPORT OdDbBlockGripExpr : public OdDbEvalExpr
{
  ODDB_EVAL_DECLARE_MEMBERS(OdDbBlockGripExpr);
  OdDbBlockGripExpr();
  
  /** \details
    Returns connection point name (e.g. L"UpdatedBaseX")
  */ 
  OdString propertyName();
  
  /** \details
    Sets connection point name (called by the grip point after it is created by the corresponding parameter in addGrip())
  */
  void setPropertyName(const OdString&);

  /** \details
    Returns the id of the parameter that owns the grip point
  */
  OdDbEvalNodeId paramId() const;

  /** \details
    Sets the id of the parameter that owns the grip point
  */
  void setParamId(OdDbEvalNodeId id);

  /** \details
    Callback called while evaluating the graph
  */
  bool evaluate(const OdDbEvalContext* evalContext) override;
  
  /** \details
    (Reserved for thefuture use)
  */
  void setValue(short);

  /** \details
    Sets the value of the connected parameter point coordinate to the OdDbEvalExpr::m_lastValue
  */
  void setValue(double);
};
typedef OdSmartPtr<OdDbBlockGripExpr> OdDbBlockGripExprPtr;