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<!DOCTYPE html>
<meta charset="utf-8" />
<title>Content selection in modal dialog</title>
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com">
<link rel="help" href="https://drafts.csswg.org/css-ui-4/#content-selection">
<meta name="assert" content="Checks that text can be selected in a modal dialog, except with 'user-select: none'.">
<link rel="stylesheet" href="/fonts/ahem.css">
<style>
dialog {
font: 10px/1 Ahem;
text-align: center;
}
</style>
<dialog>123456789A</dialog>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script>
const dialog = document.querySelector("dialog");
dialog.showModal();
function selectSomeText() {
// Clear existing selection.
getSelection().removeAllRanges();
// The dialog contains 10 characters. Select the 6 ones at the center.
return new test_driver.Actions()
.pointerMove(-3e1, 0, {origin: dialog})
.pointerDown()
.pointerMove(+3e1, 0, {origin: dialog})
.pointerUp()
.send();
}
function clickOnBackdrop() {
getSelection().removeAllRanges();
return new test_driver.Actions()
.pointerMove(10, 10)
.pointerDown()
.pointerUp()
.send();
}
promise_test(async function() {
await selectSomeText();
assert_equals(getSelection().toString(), "345678");
}, "By default, text inside a modal dialog can be selected");
promise_test(async function() {
await clickOnBackdrop();
assert_equals(getSelection().toString(), "");
}, "Clicking on backdrop doesn't select text");
promise_test(async function() {
dialog.style.userSelect = "none";
await selectSomeText();
assert_equals(getSelection().toString(), "");
dialog.style.userSelect = "";
}, "'user-select: none' prevents text from being selected");
</script>
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