From d853b637deaeb90b781b9c77132ea9beffba4d7b Mon Sep 17 00:00:00 2001
From: Joey Arhar <jarhar@chromium.org>
Date: Wed, 31 Jan 2024 07:59:09 -0800
Subject: [PATCH] Don't close ancestor popovers when fullscreening

Without this patch, the fullscreening an element inside an open popover
will make the fullscreen element display:none.

Issue: https://github.com/whatwg/html/issues/9998
Corresponding HTML PR: https://github.com/whatwg/html/pull/10116
---
 fullscreen.bs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fullscreen.bs b/fullscreen.bs
index a772f2c..6e9f78f 100644
--- a/fullscreen.bs
+++ b/fullscreen.bs
@@ -67,7 +67,10 @@ is an <a>ordered set</a> of (<a>string</a>, <a>element</a>) <a>tuples</a>. It is
 <p>To <dfn>fullscreen an <var>element</var></dfn>:
 
 <ol>
- <li><p>Run <a>hide all popovers</a> given <var>element</var>'s <a>node document</a>.
+ <li><p>Let <var>hideUntil</var> be the result of running <a>topmost popover ancestor</a> given
+ <var>element</var>, null, and false.
+
+ <li><p>Run <a>hide all popovers until</a> given <var>hideUntil</var>, false, and true.
 
  <li><p>Set <var>element</var>'s <a>fullscreen flag</a>.