From 5ea44e05d0197f1229859d951541e3019a284036 Mon Sep 17 00:00:00 2001
From: Colin Grant <colin.grant@ericsson.com>
Date: Wed, 2 Jun 2021 12:57:00 -0500
Subject: [PATCH] Track index in Pref Tree to facilitate automatic scrolling

Signed-off-by: Colin Grant <colin.grant@ericsson.com>
---
 .../preferences/src/browser/views/preference-tree-widget.tsx   | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/packages/preferences/src/browser/views/preference-tree-widget.tsx b/packages/preferences/src/browser/views/preference-tree-widget.tsx
index 746afafc20d7c..185165acccbf7 100644
--- a/packages/preferences/src/browser/views/preference-tree-widget.tsx
+++ b/packages/preferences/src/browser/views/preference-tree-widget.tsx
@@ -54,9 +54,10 @@ export class PreferencesTreeWidget extends TreeWidget {
 
     doUpdateRows(): void {
         this.rows = new Map();
+        let index = 0;
         for (const [id, nodeRow] of this.model.currentRows.entries()) {
             if (nodeRow.visibleChildren > 0 && (ExpandableTreeNode.is(nodeRow.node) || ExpandableTreeNode.isExpanded(nodeRow.node.parent))) {
-                this.rows.set(id, nodeRow);
+                this.rows.set(id, { ...nodeRow, index: index++ });
             }
         }
         this.updateScrollToRow();