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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>inert inside ShadowRoot affects slotted content</title>
<link rel="author" title="Alice Boxhall" href="aboxhall@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<div>Button 1 should be inert, and Button 2 should not be inert.</div>
<div id="shadow-host">
<button slot="slot-1" id="button-1">Button 1 (inert)</button>
<button slot="slot-2" id="button-2">Button 2 (not inert)</button>
</div>
<script>
/*
Eventual flattened tree structure:
<div id="shadow-host">
#shadow-root (open)
| <slot id="slot-1" inert>
: <button id="button-1">Button 1</button> <!-- slotted -->
| </slot>
| <slot id="slot-2">
: <button id="button-2">Button 2</button> <!-- slotted -->
| </slot>
</div>
*/
const shadowHost = document.getElementById("shadow-host");
const shadowRoot = shadowHost.attachShadow({ mode: "open" });
const slot1 = document.createElement("slot");
slot1.name = "slot-1";
slot1.inert = true;
shadowRoot.appendChild(slot1);
const slot2 = document.createElement("slot");
slot2.name = "slot-2";
shadowRoot.appendChild(slot2);
function testCanFocus(selector, canFocus) {
const element = document.querySelector(selector);
let focusedElement = null;
element.addEventListener("focus", function() { focusedElement = element; }, false);
element.focus();
assert_equals((focusedElement === element), canFocus);
}
test(() => {
testCanFocus("#button-1", false);
testCanFocus("#button-2", true);
}, "inert inside ShadowRoot affects slotted content");
</script>
</body>
</html>
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