Add ChoicePage to partition module + OS detection with os-prober.

src/modules/partition/gui/ChoicePage.h

@@ -0,0 +1,65 @@
+/* === This file is part of Calamares - <http://github.com/calamares> ===
+ *
+ *   Copyright 2014, Teo Mrnjavac <teo@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 CHOICEPAGE_H
+#define CHOICEPAGE_H
+
+#include <QWidget>
+
+class QBoxLayout;
+class QLabel;
+
+class PartitionCoreModule;
+
+class ChoicePage : public QWidget
+{
+    Q_OBJECT
+public:
+    enum Choice
+    {
+        NoChoice,
+        Alongside,
+        Erase,
+        Manual
+    };
+
+    explicit ChoicePage( QWidget* parent = nullptr );
+    virtual ~ChoicePage();
+
+    void init( PartitionCoreModule* core, const QStringList& osproberLines );
+
+    bool isNextEnabled();
+
+    Choice currentChoice();
+
+signals:
+    void nextStatusChanged( bool enabled );
+
+private:
+    void setNextEnabled( bool enabled );
+
+    bool m_nextEnabled;
+    PartitionCoreModule* m_core;
+    QBoxLayout* m_itemsLayout;
+    QLabel* m_messageLabel;
+
+    QStringList m_cleanOsproberLines;
+    Choice m_choice;
+};
+
+#endif // CHOICEPAGE_H