From 18d44051cd7d0b15097c6c9afd9af16add88f56c Mon Sep 17 00:00:00 2001
From: Peng Lyu <penn.lv@gmail.com>
Date: Tue, 12 Jul 2022 17:01:20 -0700
Subject: [PATCH] Fix #151981. Avoid re-focus output when output already has
 focus. (#154991)

---
 .../notebook/browser/view/renderers/webviewPreloads.ts        | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/vs/workbench/contrib/notebook/browser/view/renderers/webviewPreloads.ts b/src/vs/workbench/contrib/notebook/browser/view/renderers/webviewPreloads.ts
index 0ce36982b2492..f0eb46d08bbd0 100644
--- a/src/vs/workbench/contrib/notebook/browser/view/renderers/webviewPreloads.ts
+++ b/src/vs/workbench/contrib/notebook/browser/view/renderers/webviewPreloads.ts
@@ -400,6 +400,10 @@ async function webviewPreloads(ctx: PreloadContext) {
 	function focusFirstFocusableInCell(cellId: string) {
 		const cellOutputContainer = document.getElementById(cellId);
 		if (cellOutputContainer) {
+			if (cellOutputContainer.contains(document.activeElement)) {
+				return;
+			}
+
 			const focusableElement = cellOutputContainer.querySelector('[tabindex="0"], [href], button, input, option, select, textarea') as HTMLElement | null;
 			focusableElement?.focus();
 		}