feat: Twenty Sixteen 主题，带定制 Header 布局 + mu-plugins

twentysixteen/js/color-scheme-control.js

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+/* global colorScheme, Color */
+/**
+ * Add a listener to the Color Scheme control to update other color controls to new values/defaults.
+ * Also trigger an update of the Color Scheme CSS when a color is changed.
+ */
+
+( function( api ) {
+	var cssTemplate = wp.template( 'twentysixteen-color-scheme' ),
+		colorSchemeKeys = [
+			'background_color',
+			'page_background_color',
+			'link_color',
+			'main_text_color',
+			'secondary_text_color'
+		],
+		colorSettings = [
+			'background_color',
+			'page_background_color',
+			'link_color',
+			'main_text_color',
+			'secondary_text_color'
+		];
+
+	api.controlConstructor.select = api.Control.extend( {
+		ready: function() {
+			if ( 'color_scheme' === this.id ) {
+				this.setting.bind( 'change', function( value ) {
+					var colors = colorScheme[value].colors;
+
+					// Update Background Color.
+					var color = colors[0];
+					api( 'background_color' ).set( color );
+					api.control( 'background_color' ).container.find( '.color-picker-hex' )
+						.data( 'data-default-color', color )
+						.wpColorPicker( 'defaultColor', color );
+
+					// Update Page Background Color.
+					color = colors[1];
+					api( 'page_background_color' ).set( color );
+					api.control( 'page_background_color' ).container.find( '.color-picker-hex' )
+						.data( 'data-default-color', color )
+						.wpColorPicker( 'defaultColor', color );
+
+					// Update Link Color.
+					color = colors[2];
+					api( 'link_color' ).set( color );
+					api.control( 'link_color' ).container.find( '.color-picker-hex' )
+						.data( 'data-default-color', color )
+						.wpColorPicker( 'defaultColor', color );
+
+					// Update Main Text Color.
+					color = colors[3];
+					api( 'main_text_color' ).set( color );
+					api.control( 'main_text_color' ).container.find( '.color-picker-hex' )
+						.data( 'data-default-color', color )
+						.wpColorPicker( 'defaultColor', color );
+
+					// Update Secondary Text Color.
+					color = colors[4];
+					api( 'secondary_text_color' ).set( color );
+					api.control( 'secondary_text_color' ).container.find( '.color-picker-hex' )
+						.data( 'data-default-color', color )
+						.wpColorPicker( 'defaultColor', color );
+				} );
+			}
+		}
+	} );
+
+	// Generate the CSS for the current Color Scheme.
+	function updateCSS() {
+		var scheme = api( 'color_scheme' )(),
+			css,
+			colors = _.object( colorSchemeKeys, colorScheme[ scheme ].colors );
+
+		// Merge in color scheme overrides.
+		_.each( colorSettings, function( setting ) {
+			colors[ setting ] = api( setting )();
+		} );
+
+		// Add additional color.
+		// jscs:disable
+		colors.border_color = Color( colors.main_text_color ).toCSS( 'rgba', 0.2 );
+		// jscs:enable
+
+		css = cssTemplate( colors );
+
+		api.previewer.send( 'update-color-scheme-css', css );
+	}
+
+	// Update the CSS whenever a color setting is changed.
+	_.each( colorSettings, function( setting ) {
+		api( setting, function( setting ) {
+			setting.bind( updateCSS );
+		} );
+	} );
+} )( wp.customize );

twentysixteen/js/customize-preview.js

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+/**
+ * Live-update changed settings in real time in the Customizer preview.
+ */
+
+( function( $ ) {
+	var style = $( '#twentysixteen-color-scheme-css' ),
+		api = wp.customize;
+
+	if ( ! style.length ) {
+		style = $( 'head' ).append( '<style type="text/css" id="twentysixteen-color-scheme-css" />' )
+		                    .find( '#twentysixteen-color-scheme-css' );
+	}
+
+	// Site title.
+	api( 'blogname', function( value ) {
+		value.bind( function( to ) {
+			$( '.site-title a' ).text( to );
+		} );
+	} );
+
+	// Site tagline.
+	api( 'blogdescription', function( value ) {
+		value.bind( function( to ) {
+			$( '.site-description' ).text( to );
+		} );
+	} );
+
+	// Add custom-background-image body class when background image is added.
+	api( 'background_image', function( value ) {
+		value.bind( function( to ) {
+			$( 'body' ).toggleClass( 'custom-background-image', '' !== to );
+		} );
+	} );
+
+	// Color Scheme CSS.
+	api.bind( 'preview-ready', function() {
+		api.preview.bind( 'update-color-scheme-css', function( css ) {
+			style.html( css );
+		} );
+	} );
+} )( jQuery );

twentysixteen/js/functions.js

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

twentysixteen/js/html5.js

@@ -0,0 +1 @@
+// This theme does not support Internet Explorer since version 3.7.

twentysixteen/js/keyboard-image-navigation.js

@@ -0,0 +1,26 @@
+/**
+ * Twenty Sixteen keyboard support for image navigation.
+ */
+
+( function( $ ) {
+	$( document ).on( 'keydown.twentysixteen', function( e ) {
+		var url = false;
+
+		// Left arrow key code.
+		if ( 37 === e.which ) {
+			url = $( '.nav-previous a' ).attr( 'href' );
+
+		// Right arrow key code.
+		} else if ( 39 === e.which ) {
+			url = $( '.nav-next a' ).attr( 'href' );
+
+		// Other key code.
+		} else {
+			return;
+		}
+
+		if ( url && ! $( 'textarea, input' ).is( ':focus' ) ) {
+			window.location = url;
+		}
+	} );
+} )( jQuery );

twentysixteen/js/skip-link-focus-fix.js

@@ -0,0 +1,35 @@
+/**
+ * File skip-link-focus-fix.js.
+ *
+ * Helps with accessibility for keyboard only users.
+ *
+ * Learn more: https://git.io/vWdr2
+ */
+
+( function() {
+	var isIe = /(trident|msie)/i.test( navigator.userAgent );
+
+	if ( isIe && document.getElementById && window.addEventListener ) {
+		window.addEventListener( 'hashchange', function() {
+			var id = location.hash.substring( 1 ),
+				element;
+
+			if ( ! ( /^[A-z0-9_-]+$/.test( id ) ) ) {
+				return;
+			}
+
+			element = document.getElementById( id );
+
+			if ( element ) {
+				if ( ! ( /^(?:a|select|input|button|textarea)$/i.test( element.tagName ) ) ) {
+					element.tabIndex = -1;
+				}
+
+				element.focus();
+
+				// Repositions the window on jump-to-anchor to account for admin bar and border height.
+				window.scrollBy( 0, -53 );
+			}
+		}, false );
+	}
+} )();