testing/web-platform/tests/css/css-scoping/css-scoping-shadow-slot-style.html
author dadaa <daisuke.akatsuka@birchill.co.jp>
Wed, 09 Jul 2025 04:53:58 +0000 (6 hours ago)
changeset 795836 a5500d271fe3a1fefb4d81d96fc4abd00d9eade7
parent 499999 18e274e6f39b0a1b6b66fa1b3c676d69504c34af
permissions -rw-r--r--
Bug 1957280: Limit user's mouse amount for tree component r=places-reviewers,reusable-components-reviewers,masayuki,mstriemer Differential Revision: https://phabricator.services.mozilla.com/D251224
<!DOCTYPE html>
<html>
<head>
    <title>CSS Scoping Module Level 1 - Ensure that slot's style is inherited by slotted children</title>
    <link rel="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org"/>
    <link rel="help" href="http://www.w3.org/TR/css-scoping-1/#selectors-data-model">
    <link rel="match" href="reference/green-box.html"/>
</head>
<body>
    <style>
    my-host, my-non-host {
        display: block;
        width: 100px;
        height: 50px;
        overflow: hidden;
        background: red;
        color: red;
    }
    div {
        width: 100%;
        height: 50%;
    }
    </style>
    <p>Test passes if you see a single 100px by 100px green box below.</p>
    <my-host>
        <div slot="green" style="background: green;">FAIL</div>
        <div slot="green" style="background: inherit;">FAIL</div>
    </my-host>
    <my-non-host>
        <slot name="green" style="color: green; background: green">
            <div slot="green" style="background: green;">FAIL</div>
            <div slot="green" style="background: inherit;">FAIL</div>
        </slot>
    </my-non-host>
    <script>

    try {
        var shadowHost = document.querySelector('my-host');
        shadowRoot = shadowHost.attachShadow({mode: 'open'});
        shadowRoot.innerHTML = '<slot name="green" style="color: green; background: green"></slot>';
    } catch (exception) {
        document.body.appendChild(document.createTextNode(exception));
    }

    </script>
</body>
</html>