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dialog-aria02.html
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<html lang="en">
<head>
<meta charset="UTF-8">
<title>ARIA Dialog - Test 2: initial focus on first focusable element</title>
<link rel="stylesheet" href="https://russmaxdesign.github.io/accessible-forms/assets/css/examples.css">
<style>
/* Custom dialog */
[role=dialog] {
position: fixed;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
background: #fff;
padding: 1em;
border: 3px solid #000;
}
[role=dialog][open] {
display: block;
}
[role=dialog] h2 {
margin-top: 0;
}
[role=dialog] h2:focus {
outline: 0;
box-shadow: 0 0 0 1px #fff, 0 0 0 4px #000;
}
.dialog-backdrop {
background: rgba(0, 0, 0, 0.75);
opacity: 1;
position: absolute;
top: 0;
left: 0;
align-items: center;
justify-content: center;
box-sizing: border-box;
width: 100%;
height: 100%;
}
.dialog-backdrop[hidden] {
display: none;
}
dialog::-webkit-backdrop {
background: rgba(0, 0, 0, 0.75);
}
dialog::backdrop {
background: rgba(0, 0, 0, 0.75);
}
@media (min-width: 42em) {
[role=dialog] {
width: 50%;
}
}
/* Inert */
[inert] {
pointer-events: none;
cursor: default;
}
[inert], [inert] * {
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
</style>
<script>
window.console = window.console || function(t) {};
</script>
<script>
if (document.location.search.match(/type=embed/gi)) {
window.parent.postMessage("resize", "*");
}
</script>
</head>
<body translate="no">
<div class="wrapper">
<h1>ARIA Dialog - Test 2: initial focus on first focusable element</h1>
<p><a href="https://cdpn.io/pen/debug/xxYZewZ" target="_blank">Debug version</a></p>
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quibusdam voluptatibus, animi ratione et voluptate assumenda harum, ipsa dignissimos aliquam perspiciatis suscipit ipsam, similique labore voluptates itaque temporibus provident qui laboriosam.</p>
<button id="open-btn" class="button">Open Dialog</button>
<p><a href="https://cdpn.io/pen/debug/xxYZewZ" target="_blank">Debug version</a></p>
</div>
<div class="dialog-backdrop" hidden=""></div>
<div role="dialog" aria-labelledby="dialog-heading" aria-describedby="dialog-description" aria-modal="true" hidden="">
<h2 id="dialog-heading">Wombats</h2>
<p id="dialog-description">Short-legged, Australian marsupials.</p>
<p>Wombats are <a href="https://en.wikipedia.org/wiki/Marsupial" target="_blank">marsupials</a> with brown, tan or grey fur and from head to tail. They are expert diggers with short, muscular legs and sharp claws.</p>
<button id="close-btn" class="button">Close</button>
</div>
<script src="https://cpwebassets.codepen.io/assets/common/stopExecutionOnTimeout-1b93190375e9ccc259df3a57c1abc0e64599724ae30d7ea4c6877eb615f89387.js"></script>
<script src="https://assets.codepen.io/15309/inert-polyfill-3.1.1.js"></script>
<script id="rendered-js">
let openBtn = document.getElementById('open-btn'),
closeBtn = document.getElementById('close-btn'),
wrapper = document.querySelectorAll('.wrapper')[0],
dialog = document.querySelector('[role="dialog"]'),
dialogBackgrop = document.querySelector('.dialog-backdrop'),
focusableElements = dialog.querySelectorAll('h2[tabindex="-1"],a[href]:not([disabled]), button:not([disabled]), textarea:not([disabled]), input[type="text"]:not([disabled]), input[type="radio"]:not([disabled]), input[type="checkbox"]:not([disabled]), select:not([disabled])'),
firstFocusableElement = focusableElements[0];
// event listeners for open/close buttons & backdrop click
openBtn.addEventListener('click', openDialog);
closeBtn.addEventListener('click', closeDialog);
dialogBackgrop.addEventListener('click', closeDialog);
// open dialog
function openDialog() {
// toggle backdrop
dialogBackgrop.hidden = false;
// show dialog
dialog.hidden = false;
// handle inert
wrapper.setAttribute('inert', '');
// move focus to heading
setTimeout(function () {
firstFocusableElement.focus();
}, 200);
}
// close dialog
function closeDialog() {
// toggle backdrop
dialogBackgrop.hidden = true;
// show dialog
dialog.hidden = true;
// handle inert
wrapper.removeAttribute('inert');
// move focus back to trigger button
setTimeout(function () {
openBtn.focus();
});
}
// handle escape key close
document.addEventListener('keydown', e => {
if ((e.keyCode || e.which) === 27) {
closeDialog();
}
});
// listen for click outside dialog to close
dialog.addEventListener("click", e => {
var rect = e.target.getBoundingClientRect();
var minX = rect.left + e.target.clientLeft;
var minY = rect.top + e.target.clientTop;
if (e.clientX < minX || e.clientX >= minX + e.target.clientWidth ||
e.clientY < minY || e.clientY >= minY + e.target.clientHeight) {
closeDialog();
}
});
//# sourceURL=pen.js
</script>
</body>
</html>