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<!DOCTYPE html>
<meta charset="utf-8" />
<title>Interaction of 'inert' attribute with modal dialog</title>
<link rel="author" title="Peng Zhou" href="mailto:zhoupeng.1996@bytedance.com">
<link rel="help" href="https://html.spec.whatwg.org/multipage/interaction.html#inert">
<meta name="assert" content="Checks that a modal dialog escapes inertness from ancestors.">
<div id="log"></div>
<div id="wrapper">
find wrapper
<dialog id="dialog">
find dialog
<span id="child">
find child
</span>
</dialog>
</div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
function cleanup() {
dialog.close();
getSelection().removeAllRanges();
}
function setupTest(element, context) {
element.inert = true;
dialog.showModal();
context.add_cleanup(() => {
element.inert = false;
cleanup();
});
}
setup(() => {
dialog.showModal();
add_completion_callback(cleanup);
});
test(function() {
setupTest(child, this);
assert_false(window.find("wrapper"));
assert_true(window.find("dialog"));
assert_false(window.find("child"));
}, "Inner nodes with 'inert' attribute become inert anyways");
test(function() {
setupTest(dialog, this);
assert_false(window.find("wrapper"));
assert_false(window.find("dialog"));
assert_false(window.find("child"));
}, "If the modal dialog has the 'inert' attribute, everything becomes inert");
test(function() {
setupTest(wrapper, this);
assert_false(window.find("wrapper"));
assert_true(window.find("dialog"));
assert_true(window.find("child"));
}, "If an ancestor of the dialog has the 'inert' attribute, the dialog escapes inertness");
</script>
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