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#ifndef IDATASOURCE_H_
#define IDATASOURCE_H_
#include <QList>
class IDataSource {
public:
IDataSource() {};
virtual ~IDataSource() {};
virtual qint64 read() = 0;
virtual const QList<qint64>& getBars() const = 0;
virtual qint64 getMaximum() = 0;
};
#endif /* IDATASOURCE_H_ */
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