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#ifndef LIVE_FREQUENCY_VALIDATOR_HPP__
#define LIVE_FREQUENCY_VALIDATOR_HPP__
#include <QObject>
#include <QRegExpValidator>
#include "Radio.hpp"
class Bands;
class FrequencyList_v2;
class QComboBox;
class QWidget;
//
// Class LiveFrequencyValidator
//
// QLineEdit validator that controls input to an editable
// QComboBox where the user can enter a valid band or a valid
// frequency in megahetz.
//
// Collabrations
//
// Implements the QRegExpValidator interface. Validates input
// from the supplied QComboBox as either a valid frequency in
// megahertz or a valid band as defined by the supplied column of
// the supplied QAbstractItemModel.
//
class LiveFrequencyValidator final
: public QRegExpValidator
{
Q_OBJECT;
public:
using Frequency = Radio::Frequency;
LiveFrequencyValidator (QComboBox * combo_box // associated combo box
, Bands const * bands // bands model
, FrequencyList_v2 const * frequencies // working frequencies model
, Frequency const * nominal_frequency
, QWidget * parent = nullptr);
State validate (QString& input, int& pos) const override;
void fixup (QString& input) const override;
Q_SIGNAL void valid (Frequency) const;
private:
Bands const * bands_;
FrequencyList_v2 const * frequencies_;
Frequency const * nominal_frequency_;
QComboBox * combo_box_;
};
#endif
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