70 lines
1.8 KiB
JavaScript
70 lines
1.8 KiB
JavaScript
/**
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* @file
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* Provides interactivity for showing and hiding the primary tabs at mobile widths.
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*/
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((Drupal, once) => {
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/**
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* Initialize the primary tabs.
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*
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* @param {HTMLElement} el
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* The DOM element containing the primary tabs.
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*/
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function init(el) {
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const tabs = el.querySelector('.tabs');
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const expandedClass = 'is-expanded';
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const activeTab = tabs.querySelector('.is-active');
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/**
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* Determines if primary tabs are expanded for mobile layouts.
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*
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* @return {boolean}
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* Whether the tabs trigger element is expanded.
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*/
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function isTabsMobileLayout() {
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return tabs.querySelector('.tabs__trigger').clientHeight > 0;
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}
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/**
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* Controls primary tab visibility on click events.
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*
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* @param {Event} e
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* The event object.
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*/
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function handleTriggerClick(e) {
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e.currentTarget.setAttribute(
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'aria-expanded',
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!tabs.classList.contains(expandedClass),
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);
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tabs.classList.toggle(expandedClass);
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}
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if (isTabsMobileLayout() && !activeTab.matches('.tabs__tab:first-child')) {
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const newActiveTab = activeTab.cloneNode(true);
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const firstTab = tabs.querySelector('.tabs__tab:first-child');
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tabs.insertBefore(newActiveTab, firstTab);
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tabs.removeChild(activeTab);
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}
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tabs
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.querySelector('.tabs__trigger')
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.addEventListener('click', handleTriggerClick);
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}
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/**
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* Initialize the primary tabs.
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*
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* @type {Drupal~behavior}
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*
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* @prop {Drupal~behaviorAttach} attach
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* Display primary tabs according to the screen width.
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*/
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Drupal.behaviors.primaryTabs = {
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attach(context) {
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once('olivero-tabs', '[data-drupal-nav-primary-tabs]', context).forEach(
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init,
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);
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},
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};
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})(Drupal, once);
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