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tubestation/testing/web-platform/tests/selection/fire-selectionchange-event-on-document-if-textcontrol-element-is-in-shadow-tree.html
Tanu Jain 5d3cf343c1 Bug 1933345 [wpt PR 49363] - [Editing] Fire selectionchange event on TextControl for backspace input, a=testonly
Automatic update from web-platform-tests
[Editing] Fire selectionchange event on TextControl for backspace input

The selectionchange event does not get fired when the backspace key
deletes text inside a textcontrol element. According to the
specification [1], when an input or textarea element provide a text
selection and its selection changes (in either extent or direction),
the user agent must schedule a selectionchange event on the element.
This change ensures that the event will be scheduled as per the
specification.

[1] https://w3c.github.io/selection-api/#selectionchange-event

Bug: 41321247
Change-Id: Id6307b9baaee6480ba607ae8576959e2635e7b16
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6012498
Commit-Queue: Tanu Jain <tanujain@microsoft.com>
Reviewed-by: Siye Liu <siliu@microsoft.com>
Reviewed-by: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1388005}

--

wpt-commits: 020db3e4207abe0e7b45ec5f1730d01b4ed2cf1e
wpt-pr: 49363
2024-11-28 11:57:42 +00:00

47 lines
1.7 KiB
HTML

<!DOCTYPE html>
<meta charset="utf-8">
<title>Selectionchange event fired on document if TextControl element is in Shadow Tree</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="root"></div>
<script>
const root = document.getElementById("root");
const shadow = root.attachShadow({ mode: "open" });
const element = document.createElement("input");
element.value = "hello";
shadow.append(element);
const events_on_document = [];
document.addEventListener("selectionchange", ev => {
events_on_document.push(ev);
});
const events_on_input = [];
element.addEventListener("selectionchange", ev => {
events_on_input.push(ev);
});
promise_test(async () => {
element.focus();
element.setSelectionRange(5, 5);
await new Promise(resolve => step_timeout(resolve, 500));
events_on_document.length = 0;
events_on_input.length = 0;
document.execCommand("delete");
// Waits a short time to allow any events to be processed.
await new Promise(resolve => step_timeout(resolve, 500));
const expectedValue = "hell";
assert_equals(element.value, expectedValue, "element.value should be " + expectedValue);
//selectionchange event should not fire on input element
assert_equals(events_on_input.length, 0);
//selectionchange event should fire on the document
assert_equals(events_on_document.length, 1);
assert_equals(events_on_document[0].target, document, "Event target should be the document");
}, "selectionchange event fired on the document in case TextControl element is in Shadow Tree");
</script>