#ifndef CALCULATION_EXPRESSION_FIELD_H
  #define CALCULATION_EXPRESSION_FIELD_H
  
  #include <escher.h>
  
  namespace Calculation {
  
  class ExpressionField : public ::ExpressionField {
  public:
    using ::ExpressionField::ExpressionField;
  protected:
    bool handleEvent(Ion::Events::Event event) override;
  };
  
  }
  
  #endif