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(function () { 'use strict'; /** * @copyright (C) 2019 Open Source Matters, Inc.
* @license GNU General Public License version 2 or later; see LICENSE.txt */ (function () { function topLevelMouseOver(el, settings) { var ulChild = el.querySelector('ul'); if (ulChild) { ulChild.setAttribute('aria-hidden', 'false'); ulChild.classList.add(settings.menuHoverClass); } } function topLevelMouseOut(el, settings) { var ulChild = el.querySelector('ul'); if (ulChild) { ulChild.setAttribute('aria-hidden', 'true'); ulChild.classList.remove(settings.menuHoverClass); } } function setupNavigation(nav) { var settings = { menuHoverClass: 'show-menu', dir: 'ltr' }; var topLevelChilds = nav.querySelectorAll(':scope > li'); // Set tabIndex to -1 so that top_level_childs can't receive focus until menu is open topLevelChilds.forEach(function (topLevelEl) { var linkEl = topLevelEl.querySelector('a'); if (linkEl) { linkEl.tabIndex = '0'; linkEl.addEventListener('mouseover', topLevelMouseOver(topLevelEl, settings)); linkEl.addEventListener('mouseout', topLevelMouseOut(topLevelEl, settings)); } var spanEl = topLevelEl.querySelector('span'); if (spanEl) { spanEl.tabIndex = '0'; spanEl.addEventListener('mouseover', topLevelMouseOver(topLevelEl, settings)); spanEl.addEventListener('mouseout', topLevelMouseOut(topLevelEl, settings)); } topLevelEl.addEventListener('mouseover', function (_ref) { var target = _ref.target; var ulChild = target.querySelector('ul'); if (ulChild) { ulChild.setAttribute('aria-hidden', 'false'); ulChild.classList.add(settings.menuHoverClass); } }); topLevelEl.addEventListener('mouseout', function (_ref2) { var target = _ref2.target; var ulChild = target.querySelector('ul'); if (ulChild) { ulChild.setAttribute('aria-hidden', 'true'); ulChild.classList.remove(settings.menuHoverClass); } }); topLevelEl.addEventListener('focus', function (_ref3) { var target = _ref3.target; var ulChild = target.querySelector('ul'); if (ulChild) { ulChild.setAttribute('aria-hidden', 'true'); ulChild.classList.add(settings.menuHoverClass); } }); topLevelEl.addEventListener('blur', function (_ref4) { var target = _ref4.target; var ulChild = target.querySelector('ul'); if (ulChild) { ulChild.setAttribute('aria-hidden', 'false'); ulChild.classList.remove(settings.menuHoverClass); } }); topLevelEl.addEventListener('keydown', function (event) { var keyName = event.key; var curEl = event.target; var curLiEl = curEl.parentElement; var curUlEl = curLiEl.parentElement; var prevLiEl = curLiEl.previousElementSibling; var nextLiEl = curLiEl.nextElementSibling; if (!prevLiEl) { prevLiEl = curUlEl.children[curUlEl.children.length - 1]; } if (!nextLiEl) { var _curUlEl$children = curUlEl.children; nextLiEl = _curUlEl$children[0]; } switch (keyName) { case 'ArrowLeft': event.preventDefault(); if (settings.dir === 'rtl') { nextLiEl.children[0].focus(); } else { prevLiEl.children[0].focus(); } break; case 'ArrowRight': event.preventDefault(); if (settings.dir === 'rtl') { prevLiEl.children[0].focus(); } else { nextLiEl.children[0].focus(); } break; case 'ArrowUp': { event.preventDefault(); var parent = curLiEl.parentElement.parentElement; if (parent.nodeName === 'LI') { parent.children[0].focus(); } else { prevLiEl.children[0].focus(); } break; } case 'ArrowDown': event.preventDefault(); if (curLiEl.classList.contains('parent')) { var child = curLiEl.querySelector('ul'); if (child != null) { var childLi = child.querySelector('li'); childLi.children[0].focus(); } else { nextLiEl.children[0].focus(); } } else { nextLiEl.children[0].focus(); } break; } }); }); } document.addEventListener('DOMContentLoaded', function () { var navs = document.querySelectorAll('.nav'); [].forEach.call(navs, function (nav) { setupNavigation(nav); }); }); })(); }());