expressions.h

//
// author Kazys Stepanas
//
// Copyright (c) CSIRO 2015
//
#ifndef EXPRESSIONS_H_
#define EXPRESSIONS_H_

#include "ocurvesconfig.h"

#include <QObject>
#include <QList>

#include "expr/functiondefinition.h"
#include "expr/plotexpression.h"

class PlotFunctionRegister;
class QSettings;

Q_DECLARE_METATYPE(PlotExpression *);
Q_DECLARE_METATYPE(FunctionDefinition *);

class Expressions : public QObject
{
  Q_OBJECT
public:
  static const unsigned missingTolerance = 50;

  Expressions(QObject *parent = nullptr);

  ~Expressions();

  void clear(bool suppressSignals = true);

  void loadExpressions(const QSettings &settings, bool delaySignals = true);

  void saveExpressions(QSettings &settings);

  void addExpression(PlotExpression *expression);

  bool removeExpression(PlotExpression *expression);

  bool contains(const PlotExpression *expression) const;

  const QList<PlotExpression *> &expressions() const;

  const PlotFunctionRegister &functionRegister() const;

  bool registerFunction(FunctionDefinition *functionDef, bool takeOwnership = true);

signals:
  void expressionAdded(PlotExpression *expression);
  void expressionRemoved(const PlotExpression *expression);
  void functionRegistered(const FunctionDefinition *function);

private:
  QList<PlotExpression *> _expressions; 
  PlotFunctionRegister *_functionRegister;  
};

inline const QList<PlotExpression *> &Expressions::expressions() const
{
  return _expressions;
}


inline const PlotFunctionRegister &Expressions::functionRegister() const
{
  return *_functionRegister;
}


#endif // EXPRESSIONS_H_