107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
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#ifndef STATION_LIST_HPP__
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#define STATION_LIST_HPP__
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#include <QSortFilterProxyModel>
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#include <QString>
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#include <QList>
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#include "pimpl_h.hpp"
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#include "Radio.hpp"
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class Bands;
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//
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// Class StationList
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//
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// Encapsulates information about a collection of unique operating
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// stations per band. The implementation is a table model with the
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// first column being the unique (within the table rows) band name
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// and, the second the frequency offset for transverter usage and,
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// the third the antenna description. All are editable.
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//
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// Responsibilities
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//
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// Stores internally an unordered table of bands.
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//
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// If an ordered representaion is required then wrapping with an
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// appropriate proxy model is sufficient
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// e.g. QSortFilterProxyModel. A custom SortRole role is provided for
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// the band name column which returns a numeric value (Bands lower
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// frequency limit) which gives a strict frequency ordering by band.
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//
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// Collaborations
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//
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// Implements the QAbstractTableModel interface for a grid of bands
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// with offset frequencies and antenna descriptions.
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//
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// Uses the Bands model to lookup band information.
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//
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class StationList final
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: public QSortFilterProxyModel
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{
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public:
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using Frequency = Radio::Frequency;
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using FrequencyDelta = Radio::FrequencyDelta;
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//
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// Struct Station
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//
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// Aggregation of fields that describe a radio station on a band.
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//
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struct Station
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{
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QString band_name_;
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FrequencyDelta offset_;
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QString antenna_description_;
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};
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using Stations = QList<Station>;
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enum Column {band_column, offset_column, description_column};
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explicit StationList (Bands const * bands, QObject * parent = nullptr);
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explicit StationList (Bands const * bands, Stations, QObject * parent = nullptr);
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~StationList ();
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// Load and query contents.
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Stations station_list (Stations);
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Stations const& station_list () const;
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//
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// Model API
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//
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QModelIndex add (Station); // Add a new Station
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bool remove (Station); // Remove a Station
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bool removeDisjointRows (QModelIndexList); // Remove one or more stations
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FrequencyDelta offset (Frequency) const; // Return the offset to be used for a Frequency
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// Custom sort role.
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static int constexpr SortRole = Qt::UserRole;
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private:
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class impl;
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pimpl<impl> m_;
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};
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// Station equivalence
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inline
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bool operator == (StationList::Station const& lhs, StationList::Station const& rhs)
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{
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return lhs.band_name_ == rhs.band_name_
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&& lhs.offset_ == rhs.offset_
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&& lhs.antenna_description_ == rhs.antenna_description_;
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}
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QDataStream& operator << (QDataStream&, StationList::Station const&);
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QDataStream& operator >> (QDataStream&, StationList::Station&);
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#if !defined (QT_NO_DEBUG_STREAM)
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QDebug operator << (QDebug debug, StationList::Station const&);
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#endif
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Q_DECLARE_METATYPE (StationList::Station);
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Q_DECLARE_METATYPE (StationList::Stations);
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#endif
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