View file File name : functions.js Content :/* global screenReaderText */ /** * Theme functions file. * * Contains handlers for navigation and widget area. */ ( function( $ ) { var $body, $window, $sidebar, resizeTimer, secondary, button; function initMainNavigation( container ) { // Add dropdown toggle that display child menu items. container.find( '.menu-item-has-children > a' ).after( '<button class="dropdown-toggle" aria-expanded="false">' + screenReaderText.expand + '</button>' ); // Toggle buttons and submenu items with active children menu items. container.find( '.current-menu-ancestor > button' ).addClass( 'toggle-on' ); container.find( '.current-menu-ancestor > .sub-menu' ).addClass( 'toggled-on' ); container.find( '.dropdown-toggle' ).on( 'click', function( e ) { var _this = $( this ); e.preventDefault(); _this.toggleClass( 'toggle-on' ); _this.next( '.children, .sub-menu' ).toggleClass( 'toggled-on' ); _this.attr( 'aria-expanded', _this.attr( 'aria-expanded' ) === 'false' ? 'true' : 'false' ); _this.html( _this.html() === screenReaderText.expand ? screenReaderText.collapse : screenReaderText.expand ); } ); } initMainNavigation( $( '.main-navigation' ) ); // Re-initialize the main navigation when it is updated, persisting any existing submenu expanded states. $( document ).on( 'customize-preview-menu-refreshed', function( e, params ) { if ( 'primary' === params.wpNavMenuArgs.theme_location ) { initMainNavigation( params.newContainer ); // Re-sync expanded states from oldContainer. params.oldContainer.find( '.dropdown-toggle.toggle-on' ).each(function() { var containerId = $( this ).parent().prop( 'id' ); $( params.newContainer ).find( '#' + containerId + ' > .dropdown-toggle' ).triggerHandler( 'click' ); }); } }); secondary = $( '#secondary' ); button = $( '.site-branding' ).find( '.secondary-toggle' ); // Enable menu toggle for small screens. ( function() { var menu, widgets, social; if ( ! secondary.length || ! button.length ) { return; } // Hide button if there are no widgets and the menus are missing or empty. menu = secondary.find( '.nav-menu' ); widgets = secondary.find( '#widget-area' ); social = secondary.find( '#social-navigation' ); if ( ! widgets.length && ! social.length && ( ! menu.length || ! menu.children().length ) ) { button.hide(); return; } button.on( 'click.twentyfifteen', function() { secondary.toggleClass( 'toggled-on' ); secondary.trigger( 'resize' ); $( this ).toggleClass( 'toggled-on' ); if ( $( this, secondary ).hasClass( 'toggled-on' ) ) { $( this ).attr( 'aria-expanded', 'true' ); secondary.attr( 'aria-expanded', 'true' ); } else { $( this ).attr( 'aria-expanded', 'false' ); secondary.attr( 'aria-expanded', 'false' ); } } ); } )(); /** * Add or remove ARIA attributes. * * Uses jQuery's width() function to determine the size of the window and add * the default ARIA attributes for the menu toggle if it's visible. * * @since Twenty Fifteen 1.1 */ function onResizeARIA() { if ( 955 > $window.width() ) { button.attr( 'aria-expanded', 'false' ); secondary.attr( 'aria-expanded', 'false' ); button.attr( 'aria-controls', 'secondary' ); } else { button.removeAttr( 'aria-expanded' ); secondary.removeAttr( 'aria-expanded' ); button.removeAttr( 'aria-controls' ); } } // Sidebar scrolling. function resizeAndScroll() { var windowPos = $window.scrollTop(), windowHeight = $window.height(), sidebarHeight = $sidebar.height(), pageHeight = $( '#page' ).height(); if ( 955 < $window.width() && pageHeight > sidebarHeight && ( windowPos + windowHeight ) >= sidebarHeight ) { $sidebar.css({ position: 'fixed', bottom: sidebarHeight > windowHeight ? 0 : 'auto' }); } else { $sidebar.css('position', 'relative'); } } $( function() { $body = $( document.body ); $window = $( window ); $sidebar = $( '#sidebar' ).first(); $window .on( 'scroll.twentyfifteen', resizeAndScroll ) .on( 'load.twentyfifteen', onResizeARIA ) .on( 'resize.twentyfifteen', function() { clearTimeout( resizeTimer ); resizeTimer = setTimeout( resizeAndScroll, 500 ); onResizeARIA(); } ); $sidebar.on( 'click.twentyfifteen keydown.twentyfifteen', 'button', resizeAndScroll ); for ( var i = 0; i < 6; i++ ) { setTimeout( resizeAndScroll, 100 * i ); } } ); } )( jQuery );