1 /* global screenReaderText */
3 * Theme functions file.
5 * Contains handlers for navigation and widget area.
9 var body, masthead, menuToggle, siteNavigation, socialNavigation, siteHeaderMenu, resizeTimer;
11 function initMainNavigation( container ) {
13 // Add dropdown toggle that displays child menu items.
14 var dropdownToggle = $( '<button />', {
15 'class': 'dropdown-toggle',
16 'aria-expanded': false
17 } ).append( $( '<span />', {
18 'class': 'screen-reader-text',
19 text: screenReaderText.expand
22 container.find( '.menu-item-has-children > a' ).after( dropdownToggle );
24 // Toggle buttons and submenu items with active children menu items.
25 container.find( '.current-menu-ancestor > button' ).addClass( 'toggled-on' );
26 container.find( '.current-menu-ancestor > .sub-menu' ).addClass( 'toggled-on' );
28 // Add menu items with submenus to aria-haspopup="true".
29 container.find( '.menu-item-has-children' ).attr( 'aria-haspopup', 'true' );
31 container.find( '.dropdown-toggle' ).click( function( e ) {
32 var _this = $( this ),
33 screenReaderSpan = _this.find( '.screen-reader-text' );
36 _this.toggleClass( 'toggled-on' );
37 _this.next( '.children, .sub-menu' ).toggleClass( 'toggled-on' );
40 _this.attr( 'aria-expanded', _this.attr( 'aria-expanded' ) === 'false' ? 'true' : 'false' );
42 screenReaderSpan.text( screenReaderSpan.text() === screenReaderText.expand ? screenReaderText.collapse : screenReaderText.expand );
45 initMainNavigation( $( '.main-navigation' ) );
47 masthead = $( '#masthead' );
48 menuToggle = masthead.find( '#menu-toggle' );
49 siteHeaderMenu = masthead.find( '#site-header-menu' );
50 siteNavigation = masthead.find( '#site-navigation' );
51 socialNavigation = masthead.find( '#social-navigation' );
56 // Return early if menuToggle is missing.
57 if ( ! menuToggle.length ) {
61 // Add an initial values for the attribute.
62 menuToggle.add( siteNavigation ).add( socialNavigation ).attr( 'aria-expanded', 'false' );
64 menuToggle.on( 'click.twentysixteen', function() {
65 $( this ).add( siteHeaderMenu ).toggleClass( 'toggled-on' );
68 $( this ).add( siteNavigation ).add( socialNavigation ).attr( 'aria-expanded', $( this ).add( siteNavigation ).add( socialNavigation ).attr( 'aria-expanded' ) === 'false' ? 'true' : 'false' );
73 // Fix sub-menus for touch devices and better focus for hidden submenu items for accessibility.
75 if ( ! siteNavigation.length || ! siteNavigation.children().length ) {
79 // Toggle `focus` class to allow submenu access on tablets.
80 function toggleFocusClassTouchScreen() {
81 if ( window.innerWidth >= 910 ) {
82 $( document.body ).on( 'touchstart.twentysixteen', function( e ) {
83 if ( ! $( e.target ).closest( '.main-navigation li' ).length ) {
84 $( '.main-navigation li' ).removeClass( 'focus' );
87 siteNavigation.find( '.menu-item-has-children > a' ).on( 'touchstart.twentysixteen', function( e ) {
88 var el = $( this ).parent( 'li' );
90 if ( ! el.hasClass( 'focus' ) ) {
92 el.toggleClass( 'focus' );
93 el.siblings( '.focus' ).removeClass( 'focus' );
97 siteNavigation.find( '.menu-item-has-children > a' ).unbind( 'touchstart.twentysixteen' );
101 if ( 'ontouchstart' in window ) {
102 $( window ).on( 'resize.twentysixteen', toggleFocusClassTouchScreen );
103 toggleFocusClassTouchScreen();
106 siteNavigation.find( 'a' ).on( 'focus.twentysixteen blur.twentysixteen', function() {
107 $( this ).parents( '.menu-item' ).toggleClass( 'focus' );
111 // Add the default ARIA attributes for the menu toggle and the navigations.
112 function onResizeARIA() {
113 if ( window.innerWidth < 910 ) {
114 if ( menuToggle.hasClass( 'toggled-on' ) ) {
115 menuToggle.attr( 'aria-expanded', 'true' );
117 menuToggle.attr( 'aria-expanded', 'false' );
120 if ( siteHeaderMenu.hasClass( 'toggled-on' ) ) {
121 siteNavigation.attr( 'aria-expanded', 'true' );
122 socialNavigation.attr( 'aria-expanded', 'true' );
124 siteNavigation.attr( 'aria-expanded', 'false' );
125 socialNavigation.attr( 'aria-expanded', 'false' );
128 menuToggle.attr( 'aria-controls', 'site-navigation social-navigation' );
130 menuToggle.removeAttr( 'aria-expanded' );
131 siteNavigation.removeAttr( 'aria-expanded' );
132 socialNavigation.removeAttr( 'aria-expanded' );
133 menuToggle.removeAttr( 'aria-controls' );
137 // Add 'below-entry-meta' class to elements.
138 function belowEntryMetaClass( param ) {
139 if ( body.hasClass( 'page' ) || body.hasClass( 'search' ) || body.hasClass( 'single-attachment' ) || body.hasClass( 'error404' ) ) {
143 $( '.entry-content' ).find( param ).each( function() {
144 var element = $( this ),
145 elementPos = element.offset(),
146 elementPosTop = elementPos.top,
147 entryFooter = element.closest( 'article' ).find( '.entry-footer' ),
148 entryFooterPos = entryFooter.offset(),
149 entryFooterPosBottom = entryFooterPos.top + ( entryFooter.height() + 28 ),
150 caption = element.closest( 'figure' ),
153 // Add 'below-entry-meta' to elements below the entry meta.
154 if ( elementPosTop > entryFooterPosBottom ) {
156 // Check if full-size images and captions are larger than or equal to 840px.
157 if ( 'img.size-full' === param ) {
159 // Create an image to find native image width of resized images (i.e. max-width: 100%).
160 newImg = new Image();
161 newImg.src = element.attr( 'src' );
163 $( newImg ).on( 'load.twentysixteen', function() {
164 if ( newImg.width >= 840 ) {
165 element.addClass( 'below-entry-meta' );
167 if ( caption.hasClass( 'wp-caption' ) ) {
168 caption.addClass( 'below-entry-meta' );
169 caption.removeAttr( 'style' );
174 element.addClass( 'below-entry-meta' );
177 element.removeClass( 'below-entry-meta' );
178 caption.removeClass( 'below-entry-meta' );
183 $( document ).ready( function() {
184 body = $( document.body );
187 .on( 'load.twentysixteen', onResizeARIA )
188 .on( 'resize.twentysixteen', function() {
189 clearTimeout( resizeTimer );
190 resizeTimer = setTimeout( function() {
191 belowEntryMetaClass( 'img.size-full' );
192 belowEntryMetaClass( 'blockquote.alignleft, blockquote.alignright' );
197 belowEntryMetaClass( 'img.size-full' );
198 belowEntryMetaClass( 'blockquote.alignleft, blockquote.alignright' );