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[NOT TO BE MERGED] - GAUD-9398 - Add demo page demonstrating the issue #6563

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[NOT TO BE MERGED] - GAUD-9398 - Add demo page demonstrating the issue #6563

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68192c9
GAUD-9398 - Add demo page demonstrating the issue
svanherk Feb 5, 2026
5cbabed
Demo tabindex solution
GZolla Mar 11, 2026
264131f
Use inert attribute
GZolla Mar 13, 2026
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18 changes: 18 additions & 0 deletions components/backdrop/backdrop.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,9 +2,13 @@ import '../colors/colors.js';
import { css, html, LitElement } from 'lit';
import { cssEscape, getComposedChildren, getComposedParent, isComposedAncestor, isVisible } from '../../helpers/dom.js';
import { getComposedActiveElement } from '../../helpers/focus.js';
import { getFlag } from '../../helpers/flags.js';

const tabIndexSolution = getFlag('tabIndexSolution');

const BACKDROP_HIDDEN = 'data-d2l-backdrop-hidden';
const BACKDROP_ARIA_HIDDEN = 'data-d2l-backdrop-aria-hidden';
const BACKDROP_INERT = 'data-d2l-backdrop-inert';
const TRANSITION_DURATION = 200;

const reduceMotion = matchMedia('(prefers-reduced-motion: reduce)').matches;
Expand Down Expand Up @@ -173,6 +177,13 @@ function hideAccessible(target) {
child.setAttribute(BACKDROP_ARIA_HIDDEN, child.getAttribute('aria-hidden'));
}
child.setAttribute('aria-hidden', 'true');
if (tabIndexSolution) {
if (child.hasAttribute('inert')) {
child.setAttribute(BACKDROP_INERT, '');
}
child.setAttribute('inert', '');
}


child.setAttribute(BACKDROP_HIDDEN, BACKDROP_HIDDEN);
hiddenElements.push(child);
Expand Down Expand Up @@ -201,6 +212,13 @@ function showAccessible(elems) {
} else {
elem.removeAttribute('aria-hidden');
}
if (tabIndexSolution) {
if (elem.hasAttribute(BACKDROP_INERT)) {
elem.removeAttribute(BACKDROP_INERT);
} else {
elem.removeAttribute('inert');
}
}
elem.removeAttribute(BACKDROP_HIDDEN);
}
}
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30 changes: 30 additions & 0 deletions components/dialog/demo/dialog-iframe.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,30 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta charset="UTF-8">
<link rel="stylesheet" href="../../demo/styles.css" type="text/css">
<script type="module">
import '../../demo/demo-page.js';
</script>
</head>
<body unresolved>
<d2l-demo-page page-title="d2l-dialog">

<h2>Fullscreen Demo (iframe)</h2>
<p> After opening the dialog, click here and then start tabbing.</p>

<d2l-demo-snippet full-width>
<template>
<iframe style="border: none; display: block; height: 400px; width: 100%;"></iframe>
</template>
<script type="module">
import { getFlag } from '../../../helpers/flags.js';
document.querySelector('iframe').src = './iframes/outer-frame.html?demo-flag-tabIndexSolution=' + getFlag('tabIndexSolution');
</script>
</d2l-demo-snippet>


</d2l-demo-page>
</body>
</html>
25 changes: 25 additions & 0 deletions components/dialog/demo/iframes/opener-frame.html
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@@ -0,0 +1,25 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta charset="UTF-8">
<link rel="stylesheet" href="../../../demo/styles.css" type="text/css">
<script type="module">
import '../../../demo/demo-page.js';
import '../../../button/button.js';
</script>
</head>
<body unresolved>
<d2l-button id="open">Open Dialog from Inner Frame</d2l-button>
<d2l-button>Other</d2l-button>
<d2l-button>Other</d2l-button>
<d2l-button>Other</d2l-button>
<script>
requestAnimationFrame((() => {
document.querySelector('#open').addEventListener('click', () => {
parent.OpenFullscreenDialog();
});
}));
</script>
</body>
</html>
39 changes: 39 additions & 0 deletions components/dialog/demo/iframes/outer-frame.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,39 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta charset="UTF-8">
<link rel="stylesheet" href="../../../demo/styles.css" type="text/css">
<script type="module">
import '../../../demo/demo-page.js';
import '../../../button/button.js';
import '../../dialog-fullscreen.js';

window.OpenFullscreenDialog = function() {
const dialog = window.document.querySelector('#dialogFullscreen');
dialog.opened = true;
};
</script>
</head>
<body unresolved>
<!-- <button></button> Uncomment and it will be fixed -->
<div>
<iframe style="border: none; display: block; height: 400px; width: 100%;"></iframe>
</div>
<d2l-dialog-fullscreen id="dialogFullscreen" title-text="Fullscreen Title">
<p>Deadlights jack lad schooner scallywag dance the hempen jig carouser broadside cable strike colors. Bring a spring upon her cable holystone blow the man down spanker</p>
<p>Shiver me timbers to go on account lookout wherry doubloon chase. Belay yo-ho-ho keelhaul squiffy black spot yardarm spyglass sheet transom heave to.</p>
<p>Trysail Sail ho Corsair red ensign hulk smartly boom jib rum gangway. Case shot Shiver me timbers gangplank crack Jennys tea cup ballast Blimey lee snow crow's nest rutters. Fluke jib scourge of the seven seas boatswain schooner gaff booty Jack Tar transom spirits.</p>
<p>Deadlights jack lad schooner scallywag dance the hempen jig carouser broadside cable strike colors. Bring a spring upon her cable holystone blow the man down spanker</p>
<p>Shiver me timbers to go on account lookout wherry doubloon chase. Belay yo-ho-ho keelhaul squiffy black spot yardarm spyglass sheet transom heave to.</p>
<p>Trysail Sail ho Corsair red ensign hulk smartly boom jib rum gangway. Case shot Shiver me timbers gangplank crack Jennys tea cup ballast Blimey lee snow crow's nest rutters. Fluke jib scourge of the seven seas boatswain schooner gaff booty Jack Tar transom spirits.</p>
<d2l-button>Button</d2l-button>
<d2l-button slot="footer" primary data-dialog-action="save">Save</d2l-button>
<d2l-button slot="footer" data-dialog-action>Cancel</d2l-button>
</d2l-dialog-fullscreen>
<script type="module">
import { getFlag } from '../../../../helpers/flags.js';
document.querySelector('iframe').src = 'opener-frame.html?demo-flag-tabIndexSolution=' + getFlag('tabIndexSolution');
</script>
</body>
</html>
1 change: 1 addition & 0 deletions index.html
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Expand Up @@ -63,6 +63,7 @@ <h2 class="d2l-heading-3">Components</h2>
<li>
Dialogs
<ul>
<li><a href="components/dialog/demo/dialog-iframe.html">d2l-dialog (with iframes)</a></li>
<li><a href="components/dialog/demo/dialog.html">d2l-dialog</a></li>
<li><a href="components/dialog/demo/dialog-nested.html">d2l-dialog (Nested)</a></li>
<li><a href="components/dialog/demo/dialog-confirm.html">d2l-dialog-confirm</a></li>
Expand Down