From ae3d8cac5e4b1f25d6f108e40bf61535e32e7866 Mon Sep 17 00:00:00 2001
From: Oliver <oliver@stockperformer.com>
Date: Tue, 4 Feb 2020 12:03:23 +0100
Subject: [PATCH] Avoiding panics for empty tree views.

---
 treeview.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/treeview.go b/treeview.go
index 80a4df1..2d95763 100644
--- a/treeview.go
+++ b/treeview.go
@@ -409,6 +409,9 @@ func (t *TreeView) process() {
 	// Determine visible nodes and their placement.
 	var graphicsOffset, maxTextX int
 	t.nodes = nil
+	if t.root == nil {
+		return
+	}
 	selectedIndex := -1
 	topLevelGraphicsX := -1
 	if t.graphics {