moveBefore: keep current modal dialog when performing an atomic move.

noamr · chromium-wpt-export-bot · commit 985d0faa8938 · 2024-08-21T06:10:28.000-07:00
We still update the a11y tree when we've performed that move as the inert tree is updated. Bug: 353441314 Change-Id: I369c6825394c89f2b01bd26a8f1c025cd1f98474 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5712819 Reviewed-by: Joey Arhar <jarhar@chromium.org> Commit-Queue: Noam Rosenthal <nrosenthal@chromium.org> Cr-Commit-Position: refs/heads/main@{#1344723}
diff --git a/dom/nodes/moveBefore/tentative/modal-dialog.html b/dom/nodes/moveBefore/tentative/modal-dialog.html
@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<title>moveBefore should not close a modal dialog</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<body>
+<section id="old_parent">
+    <dialog id="dialog">
+    </dialog>
+</section>
+<section id="new_parent">
+</section>
+<script>
+promise_test(async t => {
+    const dialog = document.querySelector("#dialog");
+    dialog.showModal();
+    document.querySelector("#new_parent").moveBefore(dialog, null);
+    assert_equals(document.elementFromPoint(0, 0), dialog);
+}, "when reparenting a modal dialog, the dialog should stay modal");
+</script>
