WIP: new prepare viewmodule, with free space check using libparted.

src/modules/prepare/PrepareViewStep.h

@@ -0,0 +1,70 @@
+/* === 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 PREPAREPAGEPLUGIN_H
+#define PREPAREPAGEPLUGIN_H
+
+#include <QObject>
+
+#include "viewpages/ViewStep.h"
+#include "PluginDllMacro.h"
+
+class PreparePage;
+
+class PLUGINDLLEXPORT PrepareViewStep : public Calamares::ViewStep
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA( IID "calamares.ViewModule/1.0" )
+
+    Q_INTERFACES( Calamares::ViewStep )
+
+public:
+    explicit PrepareViewStep( QObject* parent = nullptr );
+    virtual ~PrepareViewStep();
+
+    QString prettyName() const override;
+
+    QWidget* widget() override;
+
+    void next() override;
+    void back() override;
+
+    bool isNextEnabled() const override;
+
+    bool isAtBeginning() const override;
+    bool isAtEnd() const override;
+
+    QList< Calamares::job_ptr > jobs() const override;
+
+    void onLeave() override;
+
+    void setConfigurationMap( const QVariantMap& configurationMap ) override;
+
+private:
+    bool checkBigEnough( qint64 requiredSpace );
+    bool checkHasPower();
+    bool checkHasInternet();
+
+    QWidget* m_widget;
+    qreal m_requiredSpaceGB;
+
+    PreparePage* m_actualWidget;
+    bool m_nextEnabled;
+};
+
+#endif // PREPAREPAGEPLUGIN_H