(function(){
const siteNavigation=document.getElementById('site-navigation');
if(! siteNavigation){
return;
}
const button=siteNavigation.getElementsByTagName('button')[ 0 ];
if('undefined'===typeof button){
return;
}
const menu=siteNavigation.getElementsByTagName('ul')[ 0 ];
if('undefined'===typeof menu){
button.style.display='none';
return;
}
if(! menu.classList.contains('nav-menu') ){
menu.classList.add('nav-menu');
}
button.addEventListener('click', function(){
siteNavigation.classList.toggle('toggled');
if(button.getAttribute('aria-expanded')==='true'){
button.setAttribute('aria-expanded', 'false');
}else{
button.setAttribute('aria-expanded', 'true');
}});
document.addEventListener('click', function(event){
const isClickInside=siteNavigation.contains(event.target);
if(! isClickInside){
siteNavigation.classList.remove('toggled');
button.setAttribute('aria-expanded', 'false');
}});
const links=menu.getElementsByTagName('a');
const linksWithChildren=menu.querySelectorAll('.menu-item-has-children > a, .page_item_has_children > a');
for(const link of links){
link.addEventListener('focus', toggleFocus, true);
link.addEventListener('blur', toggleFocus, true);
}
function toggleFocus(){
if(event.type==='focus'||event.type==='blur'){
let self=this;
while(! self.classList.contains('nav-menu') ){
if('li'===self.tagName.toLowerCase()){
self.classList.toggle('focus');
}
self=self.parentNode;
}}
if(event.type==='touchstart'){
const menuItem=this.parentNode;
event.preventDefault();
for(const link of menuItem.parentNode.children){
if(menuItem!==link){
link.classList.remove('focus');
}}
menuItem.classList.toggle('focus');
}}
}());