Implement slave contact groups — label transfer, terminal assignment and UI fixes

sources/ui/contactgroupselectiondialog.h

@@ -0,0 +1,61 @@
+/*
+	Copyright 2006-2026 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech 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 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech 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 QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef CONTACTGROUPSELECTIONDIALOG_H
+#define CONTACTGROUPSELECTIONDIALOG_H
+
+#include <QDialog>
+#include <QVector>
+#include <QSet>
+
+#include "../properties/elementdata.h"
+
+class QTableWidget;
+class QTableWidgetItem;
+class QPushButton;
+
+/**
+	@brief The ContactGroupSelectionDialog class
+	A dialog that displays all slave contact groups defined by a master element
+	in a table format. The user can select one group to assign to a slave element.
+	Columns: #, Type, Subtype, Contacts, Terminals, T1, T2, ..., TN
+*/
+class ContactGroupSelectionDialog : public QDialog
+{
+	Q_OBJECT
+
+	public:
+		ContactGroupSelectionDialog(
+			const QVector<ElementData::SlaveContactGroup> &groups,
+			const QSet<int> &usedGroupIndices,
+			const ElementData &slaveData,
+			QWidget *parent = nullptr);
+
+		int selectedIndex() const;
+
+	private:
+		QTableWidget *m_table = nullptr;
+		QPushButton *m_ok_button = nullptr;
+		int m_selected_index = -1;
+		QSet<int> m_used_indices;
+		QSet<int> m_disabled_rows;
+
+		static QString typeToString(ElementData::SlaveState type);
+		static QString subtypeToString(ElementData::SlaveType subtype);
+};
+
+#endif // CONTACTGROUPSELECTIONDIALOG_H