diff -r 44679e468ba9 -r 8b9780700b5e src/document.h
--- a/src/document.h	Sun Nov 03 12:17:41 2019 +0200
+++ b/src/document.h	Sun Nov 03 12:56:42 2019 +0200
@@ -15,7 +15,10 @@
 public:
 	explicit Document(Model* model, QWidget *parent = nullptr);
 	~Document();
-	
+	QByteArray saveSplitterState() const;
+	void restoreSplitterState(const QByteArray& state);
+signals:
+	void splitterChanged();
 private:
 	Model* model;
 	Ui::Document& ui;