crsselectiondialog.h

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#ifndef CRSSELECTIONDIALOG_H
#define CRSSELECTIONDIALOG_H
 
#include <QDialog>
#include <QString>
 
class QLineEdit;
class QComboBox;
class QTreeView;
class QTextBrowser;
class QDialogButtonBox;
class QSortFilterProxyModel;
class QStandardItemModel;
class QStandardItem;
class SpatialReferenceSystem;
 
class CRSSelectionDialog : public QDialog
{
    Q_OBJECT
 
public:
 
    explicit CRSSelectionDialog(QWidget *parent = nullptr);
    ~CRSSelectionDialog() override;
 
    void setCurrentCRS(const SpatialReferenceSystem *current);
 
    [[nodiscard]] SpatialReferenceSystem *selectedSRS() const;
    [[nodiscard]] QString selectedAuthCode() const;
 
private slots:
    void onSearchTextChanged(const QString &text);
    void onAuthorityFilterChanged(int index);
    void onTypeFilterChanged(int index);
    void onTreeSelectionChanged();
    void onAccepted();
 
private:
    void setupUi();
    void buildTree(const QString &authority = {},
                   const QString &typeFilter = {},
                   const QString &searchText = {});
    void updatePreview();
 
    // Data roles for tree items
    static constexpr int AuthCodeRole = Qt::UserRole + 1;
    static constexpr int IsLeafRole   = Qt::UserRole + 2;
 
    QLineEdit              *m_searchEdit      = nullptr;
    QComboBox              *m_authorityCombo  = nullptr;
    QComboBox              *m_typeCombo       = nullptr;
    QTreeView              *m_treeView        = nullptr;
    QTextBrowser           *m_wktPreview      = nullptr;
    QDialogButtonBox       *m_buttonBox       = nullptr;
    QStandardItemModel     *m_treeModel       = nullptr;
 
    QString                 m_selectedAuthCode;
};
 
#endif // CRSSELECTIONDIALOG_H