<div class="bux-tabpanel">
<ul class="bux-tabpanel__tabs" role="tablist" aria-label="An accessible tabpanel example" tabindex="-1">
<li class="bux-tabpanel__button" role="presentation">
<button id="bux-tabpanel__tab--1" class="bux-tabpanel__tab" role="tab" aria-selected="true" aria-controls="bux-tabpanel__panel--1">
Tab one
</button>
</li>
<li class="bux-tabpanel__button" role="presentation">
<button id="bux-tabpanel__tab--2" class="bux-tabpanel__tab" role="tab" aria-selected="" aria-controls="bux-tabpanel__panel--2" tabindex="-1">
Tab two
</button>
</li>
<li class="bux-tabpanel__button" role="presentation">
<button id="bux-tabpanel__tab--3" class="bux-tabpanel__tab" role="tab" aria-selected="" aria-controls="bux-tabpanel__panel--3" tabindex="-1">
Tab three has longer text
</button>
</li>
<li class="bux-tabpanel__button" role="presentation">
<button id="bux-tabpanel__tab--4" class="bux-tabpanel__tab" role="tab" aria-selected="" aria-controls="bux-tabpanel__panel--4" tabindex="-1">
Tab four
</button>
</li>
</ul>
<div id="bux-tabpanel__panel--1" class="bux-tabpanel__panel" role="tabpanel" aria-labelledby="bux-tabpanel__tab--1" tabindex="0">
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</div>
<div id="bux-tabpanel__panel--2" class="bux-tabpanel__panel" role="tabpanel" aria-labelledby="bux-tabpanel__tab--2" tabindex="0" hidden="hidden">
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</div>
<div id="bux-tabpanel__panel--3" class="bux-tabpanel__panel" role="tabpanel" aria-labelledby="bux-tabpanel__tab--3" tabindex="0" hidden="hidden">
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</div>
<div id="bux-tabpanel__panel--4" class="bux-tabpanel__panel" role="tabpanel" aria-labelledby="bux-tabpanel__tab--4" tabindex="0" hidden="hidden">
Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Temporibus autem quibusdam et aut officiis debitis aut rerum necessitatibus saepe eveniet ut et voluptates repudiandae sint et molestiae non recusandae. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
</div>
</div>
{#
Tabpanel
Available variables:
- title: Aria-label for the tabpanel component.
- items: Array of tabpanel items.
- item.id: Unique ID for the panel item.
- item.title: Title for the panel item.
- item.content: Content for the panel item.
#}
{% set panels = '' %}
<div class="bux-tabpanel">
<ul class="bux-tabpanel__tabs" role="tablist" aria-label="{{ title }}" tabindex="-1">
{% for item in items %}
{% set isTabSelected = (loop.first) ? true : false %}
{% set tabTabIndex = (isTabSelected) ? '' : 'tabindex="-1"' %}
{% set tabId = 'bux-tabpanel__tab--' ~ item.id %}
{% set panel = '' %}
{% set panelId = 'bux-tabpanel__panel--' ~ item.id %}
{% set panelVisibility = (isTabSelected) ? '' : 'hidden="hidden"' %}
<li class="bux-tabpanel__button" role="presentation">
<button id="{{ tabId }}" class="bux-tabpanel__tab" role="tab" aria-selected="{% if isTabSelected %}true{% endif %}" aria-controls="{{ panelId }}" {{ tabTabIndex }}>
{{ item.title }}
</button>
</li>
{% set panel %}
<div id="{{ panelId }}" class="bux-tabpanel__panel" role="tabpanel" aria-labelledby="{{ tabId }}" tabindex="0" {{panelVisibility}}>
{{ item.content }}
</div>
{% endset %}
{% set panels = panels ~ panel %}
{% endfor %}
</ul>
{{ panels }}
</div>
site_name_prefix: Office of
site_name: Learning Relations Excellence
site_slogan: Additional text or site slogan
address_1: 100 Building Name
address_2: 1 Oval Mall
city: Columbus
state: OH
zip: '43210'
contact_email: email@osu.edu
contact_phone: 614-292-OHIO
contact_tty: 614-688-8605
title: An accessible tabpanel example
items:
'1':
id: 1
title: Tab one
content: >-
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod
tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim
veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea
commodo consequat. Duis aute irure dolor in reprehenderit in voluptate
velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat
cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id
est laborum.
'2':
id: 2
title: Tab two
content: >-
Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium
doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo
inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo.
Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut
fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem
sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit
amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora
incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad
minima veniam, quis nostrum exercitationem ullam corporis suscipit
laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum
iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae
consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?
'3':
id: 3
title: Tab three has longer text
content: >-
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis
praesentium voluptatum deleniti atque corrupti quos dolores et quas
molestias excepturi sint occaecati cupiditate non provident, similique
sunt in culpa qui officia deserunt mollitia animi, id est laborum et
dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio.
Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil
impedit quo minus id quod maxime placeat facere possimus, omnis voluptas
assumenda est, omnis dolor repellendus.
'4':
id: 4
title: Tab four
content: >-
Et harum quidem rerum facilis est et expedita distinctio. Nam libero
tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo
minus id quod maxime placeat facere possimus, omnis voluptas assumenda
est, omnis dolor repellendus. Temporibus autem quibusdam et aut officiis
debitis aut rerum necessitatibus saepe eveniet ut et voluptates
repudiandae sint et molestiae non recusandae. Itaque earum rerum hic
tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias
consequatur aut perferendis doloribus asperiores repellat.
.bux-tabpanel {
&__tabs {
display: -webkit-box;
display: -ms-flexbox;
display: flex;
flex-direction: row;
max-width: 100%;
outline: 0;
overflow: auto hidden;
scroll-behavior: smooth;
scrollbar-width: none;
width: auto;
will-change: scroll-position;
-webkit-box-orient: horizontal;
-webkit-box-direction: normal;
&::-webkit-scrollbar {
display: none;
}
@media (max-width: $bp-md) {
flex-direction: column;
width: 100%;
}
}
&__tabs--scrollable {
display: flex;
height: auto;
width: 100%;
}
&__tab {
@include button-reset();
background-color: $white;
border: 2px solid $white;
color: $gray-dark-80;
cursor: pointer;
padding: 12px $sp-16;
margin-right: 1px;
font-family: $sans;
font-size: $ts-base;
font-weight: 400;
line-height: 1.25;
position: relative;
@media (max-width: $bp-md) {
width: 100%;
text-align: left;
}
&::after {
background: $gray-light-80;
bottom: 0;
content: "";
height: 4px;
left: 0;
position: absolute;
width: 100%;
}
&[aria-selected="true"] {
border: 2px solid $gray-light-80;
outline: none;
@media (max-width: $bp-md) {
border: 2px solid transparent;
}
&::after {
background: $scarlet;
}
}
&:focus {
border: 2px solid $gray-light-80;
outline: 2px solid $focus;
outline-offset: -2px;
&::after {
background: $scarlet;
}
}
@media (hover: hover) and (pointer: fine) {
&:hover {
background-color: $gray-light-90;
border-color: $gray-light-90;
color: $gray-dark-80;
&::after {
background: $gray-dark-60;
}
}
}
}
&__panel {
padding: $sp-32;
border-bottom: 2px solid $gray-light-80;
font-family: $serif;
font-size: $ts-base;
font-weight: 400;
margin-top: -4px;
&:focus {
outline: 2px solid $focus;
outline-offset: -2px;
border-color: $gray-light-40;
}
}
}
{
const tabpanelClass = "bux-tabpanel";
if (document.querySelector(`.${tabpanelClass}`)) {
let tabpanels = document.querySelectorAll(`.${tabpanelClass}`);
tabpanels = Array.prototype.slice.call(tabpanels);
tabpanels.forEach((tabpanel) => {
let tabs = tabpanel.querySelectorAll(`.${tabpanelClass}__tab`);
tabs = Array.prototype.slice.call(tabs);
let panels = tabpanel.querySelectorAll(`.${tabpanelClass}__panel`);
panels = Array.prototype.slice.call(panels);
tabs.forEach((tab) => {
tab.addEventListener("keydown", handleKeys);
tab.addEventListener("click", (event) => {
const { currentTarget: currentTab } = event;
const otherTabs = tabs.filter((element) => element !== currentTab);
currentTab.removeAttribute("tabindex");
currentTab.setAttribute("aria-selected", true);
otherTabs.forEach((otherTab) => {
otherTab.setAttribute("tabindex", "-1");
otherTab.setAttribute("aria-selected", false);
});
const currentPanelId = currentTab.getAttribute("aria-controls");
const currentPanel = document.querySelector(`#${currentPanelId}`);
const otherPanels = panels.filter((element) => element !== currentPanel);
currentPanel.removeAttribute("hidden");
currentPanel.setAttribute("tabindex", "0");
otherPanels.forEach((otherPanel) => {
otherPanel.setAttribute("hidden", "hidden");
otherPanel.setAttribute("tabindex", "-1");
});
});
});
});
function handleKeys(event) {
const { key: currentKey, currentTarget: currentTab } = event;
const {
parentNode: {
parentNode: { children: tabs },
previousElementSibling: previousElementChild,
nextElementSibling: nextElementChild,
},
} = currentTab;
const { firstElementChild: previousElement } = previousElementChild || {};
const { firstElementChild: nextElement } = nextElementChild || {};
const firstTab = tabs[0].querySelector("button");
const lastTab = tabs[tabs.length - 1].querySelector("button");
switch (currentKey) {
case keys.left:
if (!isTab(previousElement)) {
activateTab(lastTab);
} else {
activateTab(previousElement);
}
event.preventDefault();
break;
case keys.right:
if (!isTab(nextElement)) {
activateTab(firstTab);
} else {
activateTab(nextElement);
}
event.preventDefault();
break;
case keys.home:
activateTab(firstTab);
event.preventDefault();
break;
case keys.end:
activateTab(lastTab);
event.preventDefault();
break;
}
}
function isTab(element) {
return element && element.classList.contains(`${tabpanelClass}__tab`);
}
function activateTab(element) {
element.focus();
element.click();
}
}
}
This component is based on the guidelines laid out in the W3’s example, Example of Tabs with Automatic Activation.
| Key | Fuction |
|---|---|
| Tab |
|
| Right Arrow |
|
| Left Arrow |
|
| Home | Moves focus to the first tab and activates it. |
| End | Moves focus to the last tab and activates it. |
data-delay — By adding a delay to the tabpanel each key stroke within the tablist will be delayed 300ms.
data-delay usage<div class="bux-tabpanel" data-delay>
...
</div>