/* global twentyseventeenScreenReaderText */
/**
* Theme functions file.
*
* Contains handlers for navigation and widget area.
*/
(function( $ ) {
var masthead, menuToggle, siteNavContain, siteNavigation;
function initMainNavigation( container ) {
// Add dropdown toggle that displays child menu items.
var dropdownToggle = $( '', { 'class': 'dropdown-toggle', 'aria-expanded': false })
.append( twentyseventeenScreenReaderText.icon )
.append( $( '', { 'class': 'screen-reader-text', text: twentyseventeenScreenReaderText.expand }) );
container.find( '.menu-item-has-children > a, .page_item_has_children > a' ).after( dropdownToggle );
// Set the active submenu dropdown toggle button initial state.
container.find( '.current-menu-ancestor > button' )
.addClass( 'toggled-on' )
.attr( 'aria-expanded', 'true' )
.find( '.screen-reader-text' )
.text( twentyseventeenScreenReaderText.collapse );
// Set the active submenu initial state.
container.find( '.current-menu-ancestor > .sub-menu' ).addClass( 'toggled-on' );
container.find( '.dropdown-toggle' ).click( function( e ) {
var _this = $( this ),
screenReaderSpan = _this.find( '.screen-reader-text' );
e.preventDefault();
_this.toggleClass( 'toggled-on' );
_this.next( '.children, .sub-menu' ).toggleClass( 'toggled-on' );
_this.attr( 'aria-expanded', _this.attr( 'aria-expanded' ) === 'false' ? 'true' : 'false' );
screenReaderSpan.text( screenReaderSpan.text() === twentyseventeenScreenReaderText.expand ? twentyseventeenScreenReaderText.collapse : twentyseventeenScreenReaderText.expand );
});
}
initMainNavigation( $( '.main-navigation' ) );
masthead = $( '#masthead' );
menuToggle = masthead.find( '.menu-toggle' );
siteNavContain = masthead.find( '.main-navigation' );
siteNavigation = masthead.find( '.main-navigation > div > ul' );
// Enable menuToggle.
(function() {
// Return early if menuToggle is missing.
if ( ! menuToggle.length ) {
return;
}
// Add an initial value for the attribute.
menuToggle.attr( 'aria-expanded', 'false' );
menuToggle.on( 'click.twentyseventeen', function() {
siteNavContain.toggleClass( 'toggled-on' );
$( this ).attr( 'aria-expanded', siteNavContain.hasClass( 'toggled-on' ) );
});
})();
// Fix sub-menus for touch devices and better focus for hidden submenu items for accessibility.
(function() {
if ( ! siteNavigation.length || ! siteNavigation.children().length ) {
return;
}
// Toggle `focus` class to allow submenu access on tablets.
function toggleFocusClassTouchScreen() {
if ( 'none' === $( '.menu-toggle' ).css( 'display' ) ) {
$( document.body ).on( 'touchstart.twentyseventeen', function( e ) {
if ( ! $( e.target ).closest( '.main-navigation li' ).length ) {
$( '.main-navigation li' ).removeClass( 'focus' );
}
});
siteNavigation.find( '.menu-item-has-children > a, .page_item_has_children > a' )
.on( 'touchstart.twentyseventeen', function( e ) {
var el = $( this ).parent( 'li' );
if ( ! el.hasClass( 'focus' ) ) {
e.preventDefault();
el.toggleClass( 'focus' );
el.siblings( '.focus' ).removeClass( 'focus' );
}
});
} else {
siteNavigation.find( '.menu-item-has-children > a, .page_item_has_children > a' ).unbind( 'touchstart.twentyseventeen' );
}
}
if ( 'ontouchstart' in window ) {
$( window ).on( 'resize.twentyseventeen', toggleFocusClassTouchScreen );
toggleFocusClassTouchScreen();
}
siteNavigation.find( 'a' ).on( 'focus.twentyseventeen blur.twentyseventeen', function() {
$( this ).parents( '.menu-item, .page_item' ).toggleClass( 'focus' );
});
})();
})( jQuery );