56 lines
1.5 KiB
JavaScript
56 lines
1.5 KiB
JavaScript
/**
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* Handles toggling the navigation menu for small screens and
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* accessibility for submenu items.
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*/
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( function() {
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var nav = document.getElementById( 'site-navigation' ), button, menu;
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if ( ! nav ) {
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return;
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}
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button = nav.getElementsByTagName( 'button' )[0];
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menu = nav.getElementsByTagName( 'ul' )[0];
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if ( ! button ) {
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return;
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}
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// Hide button if menu is missing or empty.
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if ( ! menu || ! menu.childNodes.length ) {
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button.style.display = 'none';
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return;
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}
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button.onclick = function() {
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if ( -1 === menu.className.indexOf( 'nav-menu' ) ) {
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menu.className = 'nav-menu';
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}
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if ( -1 !== button.className.indexOf( 'toggled-on' ) ) {
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button.className = button.className.replace( ' toggled-on', '' );
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menu.className = menu.className.replace( ' toggled-on', '' );
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} else {
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button.className += ' toggled-on';
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menu.className += ' toggled-on';
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}
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};
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} )();
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// Better focus for hidden submenu items for accessibility.
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( function( $ ) {
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$( '.main-navigation' ).find( 'a' ).on( 'focus.twentytwelve blur.twentytwelve', function() {
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$( this ).parents( '.menu-item, .page_item' ).toggleClass( 'focus' );
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} );
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if ( 'ontouchstart' in window ) {
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$('body').on( 'touchstart.twentytwelve', '.menu-item-has-children > a, .page_item_has_children > a', function( e ) {
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var el = $( this ).parent( 'li' );
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if ( ! el.hasClass( 'focus' ) ) {
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e.preventDefault();
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el.toggleClass( 'focus' );
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el.siblings( '.focus').removeClass( 'focus' );
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}
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} );
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}
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} )( jQuery );
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