First draft of elements renumber function.

sources/autoNum/ui/renumberelementsdialog.h

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+/*
+    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 RENUMBERELEMENTSDIALOG_H
+#define RENUMBERELEMENTSDIALOG_H
+
+#include <QDialog>
+#include <QStringList>
+
+class QComboBox;
+class QRadioButton;
+class QDialogButtonBox;
+
+/**
+ * @brief Simple dialog to pick renumbering scope for elements.
+ *
+ * The user can choose between:
+ *  - all element autonumbering schemes
+ *  - one selected scheme title
+ */
+class RenumberElementsDialog final : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit RenumberElementsDialog(const QStringList &scheme_titles, QWidget *parent = nullptr);
+
+    /**
+     * @return Empty string if "all" is selected, otherwise the chosen scheme title.
+     */
+    QString selectedSchemeTitle() const;
+
+private slots:
+    void updateUi();
+
+private:
+    QStringList m_scheme_titles;
+    QRadioButton *m_all_rb = nullptr;
+    QRadioButton *m_one_rb = nullptr;
+    QComboBox *m_combo = nullptr;
+    QDialogButtonBox *m_buttons = nullptr;
+};
+
+#endif // RENUMBERELEMENTSDIALOG_H