Say hello to EncryptWidget.

src/modules/partition/gui/EncryptWidget.h

@@ -0,0 +1,57 @@
+/* === This file is part of Calamares - <http://github.com/calamares> ===
+ *
+ *   Copyright 2016, 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 ENCRYPTWIDGET_H
+#define ENCRYPTWIDGET_H
+
+#include "ui_EncryptWidget.h"
+
+class EncryptWidget : public QWidget, private Ui::EncryptWidget
+{
+    Q_OBJECT
+
+public:
+    enum State : unsigned short
+    {
+        EncryptionDisabled = 0,
+        EncryptionUnconfirmed,
+        EncryptionConfirmed
+    };
+
+    explicit EncryptWidget( QWidget* parent = nullptr );
+
+    State state() const;
+
+    QString passphrase() const;
+
+signals:
+    void stateChanged( State );
+
+protected:
+    void changeEvent( QEvent* e );
+
+private:
+    void updateState();
+    void onPassphraseEdited();
+    void onCheckBoxStateChanged( int state );
+
+    State m_state;
+};
+
+#endif // ENCRYPTWIDGET_H