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213 lines
7.2 KiB
213 lines
7.2 KiB
/* global screenReaderText */ |
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/** |
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* Theme functions file. |
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* |
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* Contains handlers for navigation and widget area. |
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*/ |
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( function( $ ) { |
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var body, masthead, menuToggle, siteNavigation, socialNavigation, siteHeaderMenu, resizeTimer; |
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function initMainNavigation( container ) { |
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// Add dropdown toggle that displays child menu items. |
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var dropdownToggle = $( '<button />', { |
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'class': 'dropdown-toggle', |
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'aria-expanded': false |
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} ).append( $( '<span />', { |
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'class': 'screen-reader-text', |
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text: screenReaderText.expand |
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} ) ); |
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container.find( '.menu-item-has-children > a' ).after( dropdownToggle ); |
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// Toggle buttons and submenu items with active children menu items. |
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container.find( '.current-menu-ancestor > button' ).addClass( 'toggled-on' ); |
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container.find( '.current-menu-ancestor > .sub-menu' ).addClass( 'toggled-on' ); |
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// Add menu items with submenus to aria-haspopup="true". |
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container.find( '.menu-item-has-children' ).attr( 'aria-haspopup', 'true' ); |
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container.find( '.dropdown-toggle' ).click( function( e ) { |
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var _this = $( this ), |
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screenReaderSpan = _this.find( '.screen-reader-text' ); |
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e.preventDefault(); |
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_this.toggleClass( 'toggled-on' ); |
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_this.next( '.children, .sub-menu' ).toggleClass( 'toggled-on' ); |
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// jscs:disable |
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_this.attr( 'aria-expanded', _this.attr( 'aria-expanded' ) === 'false' ? 'true' : 'false' ); |
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// jscs:enable |
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screenReaderSpan.text( screenReaderSpan.text() === screenReaderText.expand ? screenReaderText.collapse : screenReaderText.expand ); |
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} ); |
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} |
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initMainNavigation( $( '.main-navigation' ) ); |
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masthead = $( '#masthead' ); |
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menuToggle = masthead.find( '#menu-toggle' ); |
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siteHeaderMenu = masthead.find( '#site-header-menu' ); |
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siteNavigation = masthead.find( '#site-navigation' ); |
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socialNavigation = masthead.find( '#social-navigation' ); |
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// Enable menuToggle. |
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( function() { |
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// Return early if menuToggle is missing. |
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if ( ! menuToggle.length ) { |
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return; |
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} |
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// Add an initial values for the attribute. |
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menuToggle.add( siteNavigation ).add( socialNavigation ).attr( 'aria-expanded', 'false' ); |
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menuToggle.on( 'click.twentysixteen', function() { |
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$( this ).add( siteHeaderMenu ).toggleClass( 'toggled-on' ); |
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// jscs:disable |
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$( this ).add( siteNavigation ).add( socialNavigation ).attr( 'aria-expanded', $( this ).add( siteNavigation ).add( socialNavigation ).attr( 'aria-expanded' ) === 'false' ? 'true' : 'false' ); |
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// jscs:enable |
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} ); |
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} )(); |
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// Fix sub-menus for touch devices and better focus for hidden submenu items for accessibility. |
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( function() { |
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if ( ! siteNavigation.length || ! siteNavigation.children().length ) { |
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return; |
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} |
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// Toggle `focus` class to allow submenu access on tablets. |
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function toggleFocusClassTouchScreen() { |
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if ( window.innerWidth >= 910 ) { |
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$( document.body ).on( 'touchstart.twentysixteen', function( e ) { |
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if ( ! $( e.target ).closest( '.main-navigation li' ).length ) { |
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$( '.main-navigation li' ).removeClass( 'focus' ); |
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} |
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} ); |
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siteNavigation.find( '.menu-item-has-children > a' ).on( 'touchstart.twentysixteen', function( e ) { |
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var el = $( this ).parent( 'li' ); |
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if ( ! el.hasClass( 'focus' ) ) { |
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e.preventDefault(); |
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el.toggleClass( 'focus' ); |
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el.siblings( '.focus' ).removeClass( 'focus' ); |
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} |
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} ); |
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} else { |
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siteNavigation.find( '.menu-item-has-children > a' ).unbind( 'touchstart.twentysixteen' ); |
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} |
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} |
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if ( 'ontouchstart' in window ) { |
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$( window ).on( 'resize.twentysixteen', toggleFocusClassTouchScreen ); |
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toggleFocusClassTouchScreen(); |
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} |
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siteNavigation.find( 'a' ).on( 'focus.twentysixteen blur.twentysixteen', function() { |
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$( this ).parents( '.menu-item' ).toggleClass( 'focus' ); |
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} ); |
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} )(); |
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// Add the default ARIA attributes for the menu toggle and the navigations. |
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function onResizeARIA() { |
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if ( window.innerWidth < 910 ) { |
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if ( menuToggle.hasClass( 'toggled-on' ) ) { |
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menuToggle.attr( 'aria-expanded', 'true' ); |
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} else { |
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menuToggle.attr( 'aria-expanded', 'false' ); |
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} |
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if ( siteHeaderMenu.hasClass( 'toggled-on' ) ) { |
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siteNavigation.attr( 'aria-expanded', 'true' ); |
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socialNavigation.attr( 'aria-expanded', 'true' ); |
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} else { |
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siteNavigation.attr( 'aria-expanded', 'false' ); |
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socialNavigation.attr( 'aria-expanded', 'false' ); |
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} |
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menuToggle.attr( 'aria-controls', 'site-navigation social-navigation' ); |
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} else { |
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menuToggle.removeAttr( 'aria-expanded' ); |
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siteNavigation.removeAttr( 'aria-expanded' ); |
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socialNavigation.removeAttr( 'aria-expanded' ); |
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menuToggle.removeAttr( 'aria-controls' ); |
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} |
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} |
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// Add 'below-entry-meta' class to elements. |
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function belowEntryMetaClass( param ) { |
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if ( body.hasClass( 'page' ) || body.hasClass( 'search' ) || body.hasClass( 'single-attachment' ) || body.hasClass( 'error404' ) ) { |
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return; |
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} |
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$( '.entry-content' ).find( param ).each( function() { |
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var element = $( this ), |
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elementPos = element.offset(), |
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elementPosTop = elementPos.top, |
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entryFooter = element.closest( 'article' ).find( '.entry-footer' ), |
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entryFooterPos = entryFooter.offset(), |
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entryFooterPosBottom = entryFooterPos.top + ( entryFooter.height() + 28 ), |
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caption = element.closest( 'figure' ), |
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figcaption = element.next( 'figcaption' ), |
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newImg; |
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// Add 'below-entry-meta' to elements below the entry meta. |
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if ( elementPosTop > entryFooterPosBottom ) { |
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// Check if full-size images and captions are larger than or equal to 840px. |
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if ( 'img.size-full' === param || '.wp-block-image img' === param ) { |
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// Create an image to find native image width of resized images (i.e. max-width: 100%). |
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newImg = new Image(); |
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newImg.src = element.attr( 'src' ); |
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$( newImg ).on( 'load.twentysixteen', function() { |
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if ( newImg.width >= 840 ) { |
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// Check if an image in an image block has a width attribute; if its value is less than 840, return. |
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if ( '.wp-block-image img' === param && element.is( '[width]' ) && element.attr( 'width' ) < 840 ) { |
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return; |
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} |
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element.addClass( 'below-entry-meta' ); |
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if ( caption.hasClass( 'wp-caption' ) ) { |
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caption.addClass( 'below-entry-meta' ); |
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caption.removeAttr( 'style' ); |
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} |
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if ( figcaption ) { |
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figcaption.addClass( 'below-entry-meta' ); |
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} |
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} |
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} ); |
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} else { |
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element.addClass( 'below-entry-meta' ); |
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} |
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} else { |
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element.removeClass( 'below-entry-meta' ); |
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caption.removeClass( 'below-entry-meta' ); |
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} |
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} ); |
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} |
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$( document ).ready( function() { |
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body = $( document.body ); |
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$( window ) |
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.on( 'load.twentysixteen', onResizeARIA ) |
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.on( 'resize.twentysixteen', function() { |
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clearTimeout( resizeTimer ); |
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resizeTimer = setTimeout( function() { |
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belowEntryMetaClass( 'img.size-full' ); |
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belowEntryMetaClass( 'blockquote.alignleft, blockquote.alignright' ); |
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belowEntryMetaClass( '.wp-block-image img' ); |
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}, 300 ); |
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onResizeARIA(); |
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} ); |
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belowEntryMetaClass( 'img.size-full' ); |
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belowEntryMetaClass( 'blockquote.alignleft, blockquote.alignright' ); |
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belowEntryMetaClass( '.wp-block-image img' ); |
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} ); |
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} )( jQuery );
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