object.h

#ifndef ELEMENT_H
#define ELEMENT_H

#include <QPointF>
#include <QString>

class CompositeObject;
class Sheet;

class Object
{
public:
    // CONSTRUCTORS
    virtual ~Object() = default;
    virtual Object *clone() const = 0;

    // GETTERS
    virtual QPointF getPos() const = 0;
    virtual QString getProperty(const QString &name) const;

    // SETTERS
    virtual void setPos(const QPointF &pos) = 0;
    virtual void setProperty(const QString &name, const QString &value);

    // OPERATORS
    virtual bool operator==(const Object &obj) const;
    virtual bool operator!=(const Object &obj) const;
};

#endif // ELEMENT_H