diff -r e1ced2523cad -r 008989bc7d6e src/edithistory.h
--- a/src/edithistory.h	Tue Nov 02 15:43:57 2021 +0200
+++ b/src/edithistory.h	Tue Mar 01 17:00:19 2022 +0200
@@ -23,6 +23,7 @@
 class AbstractHistoryEntry
 {
 public:
+	virtual ~AbstractHistoryEntry();
 	virtual void undo(Model::EditContext& editContext) = 0;
 	virtual void redo(Model::EditContext& editContext) = 0;
 };
@@ -57,6 +58,7 @@
 	void undo(Model::EditContext& editContext) override;
 	void redo(Model::EditContext& editContext) override;
 private:
+	void doUndoRedo(Model::EditContext &editContext, QByteArray& state);
 	int position;
 	QByteArray stateBefore;
 	QByteArray stateAfter;
@@ -97,4 +99,4 @@
 	std::vector<Changeset> changesets;
 	std::size_t position = 0;
 	bool changesetOpen = false;
-};
\ No newline at end of file
+};