[packagechooser] Add a model for the list to use

- Model contents currently hard-coded

src/modules/packagechooser/PackageModel.h

@@ -0,0 +1,62 @@
+/* === This file is part of Calamares - <https://github.com/calamares> ===
+ *
+ *   Copyright 2019, Adriaan de Groot <groot@kde.org>
+ *
+ *   Calamares is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   Calamares is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with Calamares. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef PACKAGEMODEL_H
+#define PACKAGEMODEL_H
+
+#include <QAbstractListModel>
+#include <QObject>
+#include <QVector>
+
+struct PackageItem
+{
+    QString id;
+    // TODO: may need more than one
+    QString package;
+    // TODO: name and description are localized
+    QString name;
+    QString description;
+    // TODO: may be more than one
+    // QPixmap screenshot;
+
+    PackageItem();
+    PackageItem( const QString& id, const QString& package, const QString& name, const QString& description );
+
+    // TODO: implement this
+    PackageItem fromAppStream( const QString& filename );
+};
+
+using PackageList = QVector< PackageItem >;
+
+class PackageListModel : public QAbstractListModel
+{
+public:
+    PackageListModel( PackageList&& items, QObject* parent );
+    PackageListModel( QObject* parent );
+    virtual ~PackageListModel();
+
+    void addPackage( PackageItem&& p );
+
+    int rowCount( const QModelIndex& index ) const override;
+    QVariant data( const QModelIndex& index, int role ) const override;
+
+private:
+    PackageList m_packages;
+};
+
+#endif