[libcalamares] Offer translation lookup of regions

src/libcalamares/locale/TimeZone.cpp

@@ -268,6 +268,18 @@ RegionsModel::roleNames() const
     return { { NameRole, "name" }, { KeyRole, "key" } };
 }
 
+QString
+RegionsModel::tr( const QString& region ) const
+{
+    for ( const auto* p : m_private->m_regions )
+    {
+        if ( p->key() == region )
+        {
+            return p->tr();
+        }
+    }
+    return region;
+}
 
 ZonesModel::ZonesModel( QObject* parent )
     : QAbstractListModel( parent )

src/libcalamares/locale/TimeZone.h

@@ -47,6 +47,9 @@ class TimeZoneData : public QObject, TranslatableString
     Q_OBJECT
 
     Q_PROPERTY( QString region READ region CONSTANT )
+    Q_PROPERTY( QString zone READ zone CONSTANT )
+    Q_PROPERTY( QString name READ tr CONSTANT )
+    Q_PROPERTY( QString countryCode READ country CONSTANT )
 
 public:
     TimeZoneData( const QString& region,
@@ -98,6 +101,14 @@ public:
 
     QHash< int, QByteArray > roleNames() const override;
 
+public Q_SLOTS:
+    /** @brief Provides a human-readable version of the region
+     *
+     * Returns @p region unchanged if there is no such region
+     * or no translation for the region's name.
+     */
+    QString tr( const QString& region ) const;
+
 private:
     Private* m_private;
 };