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<!DOCTYPE html>
<meta charset="utf-8" />
<title>Interaction of 'inert' attribute with modal dialog</title>
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.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">
wrapper
<dialog id="dialog">
dialog
<span id="child">
child
</span>
</dialog>
</div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
setup(() => {
dialog.showModal();
add_completion_callback(() => {
dialog.close();
getSelection().removeAllRanges();
});
});
function checkSelection(expectedText) {
const selection = getSelection();
selection.selectAllChildren(document.documentElement);
const actualText = selection.toString().trim();
assert_equals(actualText, expectedText);
}
test(function() {
checkSelection("dialog child");
}, "Modal dialog only marks outside nodes as inert");
test(function() {
child.inert = true;
this.add_cleanup(() => { child.inert = false; });
checkSelection("dialog");
}, "Inner nodes with 'inert' attribute become inert anyways");
test(function() {
dialog.inert = true;
this.add_cleanup(() => { dialog.inert = false; });
checkSelection("");
}, "If the modal dialog has the 'inert' attribute, everything becomes inert");
test(function() {
wrapper.inert = true;
this.add_cleanup(() => { wrapper.inert = false; });
checkSelection("dialog child");
}, "If an ancestor of the dialog has the 'inert' attribute, the dialog escapes inertness");
</script>
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