Adding new items to the model can now be made undone/redone.

model/commands/insertrowscommand.h

@@ -0,0 +1,28 @@
+#ifndef INSERTROWSCOMMAND_H
+#define INSERTROWSCOMMAND_H
+
+#include <QUndoCommand>
+
+class TableModel;
+
+class InsertRowsCommand : public QUndoCommand {
+ public:
+  // TODO don't use simple pointer to model
+  /// Using simple pointer to model because there was a crash when closing the application with an
+  /// unclean undo stack
+  InsertRowsCommand(TableModel* model,
+                   int startRow,
+                   QList<QHash<int, QVariant> > valueList,
+                   QUndoCommand* parent = nullptr);
+
+  /// QUndoCommand interface
+  void undo() override;
+  void redo() override;
+
+ private:
+  TableModel* m_tableModel;
+  const int m_startRow;
+  const QList<QHash<int, QVariant> > m_valueList;
+};
+
+#endif  // INSERTROWSCOMMAND_H