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<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8>
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>focus contenteditable element in iframe scroll into view</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<style>
iframe {
position: absolute;
left: 250vw;
}
.spacer {
width: 100vw;
height: 250vh;
}
</style>
</head>
<body>
<div id="focusable-1" class="editor" contenteditable="true">focusable 1</div>
<div class="spacer"></div>
<iframe srcdoc="<div id='focusable-2' contenteditable='true'>focusable 2</div>"></iframe>
<div class="spacer"></div>
</body>
<script>
function waitForLoad(w) {
return new Promise(resolve => w.addEventListener('load', resolve));
}
function waitForFrame() {
return new Promise(resolve => {
requestAnimationFrame(() => requestAnimationFrame(() => resolve()));
});
}
promise_test(async (t) => {
await waitForLoad(window);
const focusable_1 = document.getElementById("focusable-1");
const iframeDocument = document.querySelector("iframe").contentDocument;
const focusable_2 = iframeDocument.getElementById("focusable-2");
focusable_1.focus();
focusable_2.focus();
await waitForFrame();
const firstScrollX = window.scrollX;
const firstScrollY = window.scrollY;
assert_greater_than(firstScrollX, window.innerWidth, "scroll X is greater than window.innerWidth");
assert_greater_than(firstScrollY, window.innerHeight, "scroll Y is greater than window.innerHeight");
window.scroll(0, 0);
assert_equals(window.scrollX, 0, "scroll X is reset to 0");
assert_equals(window.scrollY, 0, "scroll Y is reset to 0");
focusable_1.focus();
focusable_2.focus();
await waitForFrame();
const secondScrollX = window.scrollX;
const secondScrollY = window.scrollY;
// Ensure that both scroll positions are within +/- 1
assert_approx_equals(firstScrollX, secondScrollX, 1.0,
"scroll X is within +/- 1 of a element in an iframe");
assert_approx_equals(firstScrollY, secondScrollY, 1.0,
"scroll Y is within +/- 1 of a element in an iframe");
}, "Check contenteditable element in an iframe scroll into view on second focusing");
</script>
</html>
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