https://hamanaka.or.jp/wp-content/themes/cms/js/functions.js?ver=20150330

1/* global screenReaderText */
2/**
3 * Theme functions file.
4 *
5 * Contains handlers for navigation and widget area.
6 */
7
8( function( $ ) {
9	var $body, $window, $sidebar, adminbarOffset, top = false,
10	    bottom = false, windowWidth, windowHeight, lastWindowPos = 0,
11	    topOffset = 0, bodyHeight, sidebarHeight, resizeTimer,
12		secondary, button;
13
14	// Add dropdown toggle that display child menu items.
15	$( '.main-navigation .menu-item-has-children > a' ).after( '<button class="dropdown-toggle" aria-expanded="false">' + screenReaderText.expand + '</button>' );
16
17	// Toggle buttons and submenu items with active children menu items.
18	$( '.main-navigation .current-menu-ancestor > button' ).addClass( 'toggle-on' );
19	$( '.main-navigation .current-menu-ancestor > .sub-menu' ).addClass( 'toggled-on' );
20
21	$( '.dropdown-toggle' ).click( function( e ) {
22		var _this = $( this );
23		e.preventDefault();
24		_this.toggleClass( 'toggle-on' );
25		_this.next( '.children, .sub-menu' ).toggleClass( 'toggled-on' );
26		_this.attr( 'aria-expanded', _this.attr( 'aria-expanded' ) === 'false' ? 'true' : 'false' );
27		_this.html( _this.html() === screenReaderText.expand ? screenReaderText.collapse : screenReaderText.expand );
28	} );
29
30	secondary = $( '#secondary' );
31	button = $( '.site-branding' ).find( '.secondary-toggle' );
32
33	// Enable menu toggle for small screens.
34	( function() {
35		var menu, widgets, social;
36		if ( ! secondary || ! button ) {
37			return;
38		}
39
40		// Hide button if there are no widgets and the menus are missing or empty.
41		menu    = secondary.find( '.nav-menu' );
42		widgets = secondary.find( '#widget-area' );
43		social  = secondary.find( '#social-navigation' );
44		if ( ! widgets.length && ! social.length && ( ! menu || ! menu.children().length ) ) {
45			button.hide();
46			return;
47		}
48
49		button.on( 'click.twentyfifteen', function() {
50			secondary.toggleClass( 'toggled-on' );
51			secondary.trigger( 'resize' );
52			$( this ).toggleClass( 'toggled-on' );
53			if ( $( this, secondary ).hasClass( 'toggled-on' ) ) {
54				$( this ).attr( 'aria-expanded', 'true' );
55				secondary.attr( 'aria-expanded', 'true' );
56			} else {
57				$( this ).attr( 'aria-expanded', 'false' );
58				secondary.attr( 'aria-expanded', 'false' );
59			}
60		} );
61	} )();
62
63	/**
64	 * @summary Add or remove ARIA attributes.
65	 * Uses jQuery's width() function to determine the size of the window and add
66	 * the default ARIA attributes for the menu toggle if it's visible.
67	 * @since Twenty Fifteen 1.1
68	 */
69	function onResizeARIA() {
70		if ( 955 > $window.width() ) {
71			button.attr( 'aria-expanded', 'false' );
72			secondary.attr( 'aria-expanded', 'false' );
73			button.attr( 'aria-controls', 'secondary' );
74		} else {
75			button.removeAttr( 'aria-expanded' );
76			secondary.removeAttr( 'aria-expanded' );
77			button.removeAttr( 'aria-controls' );
78		}
79	}
80
81	// Sidebar scrolling.
82	function resize() {
83		windowWidth = $window.width();
84
85		if ( 955 > windowWidth ) {
86			top = bottom = false;
87			$sidebar.removeAttr( 'style' );
88		}
89	}
90
91	function scroll() {
92		var windowPos = $window.scrollTop();
93
94		if ( 955 > windowWidth ) {
95			return;
96		}
97
98		sidebarHeight = $sidebar.height();
99		windowHeight  = $window.height();
100		bodyHeight    = $body.height();
101
102		if ( sidebarHeight + adminbarOffset > windowHeight ) {
103			if ( windowPos > lastWindowPos ) {
104				if ( top ) {
105					top = false;
106					topOffset = ( $sidebar.offset().top > 0 ) ? $sidebar.offset().top - adminbarOffset : 0;
107					$sidebar.attr( 'style', 'top: ' + topOffset + 'px;' );
108				} else if ( ! bottom && windowPos + windowHeight > sidebarHeight + $sidebar.offset().top && sidebarHeight + adminbarOffset < bodyHeight ) {
109					bottom = true;
110					$sidebar.attr( 'style', 'position: fixed; bottom: 0;' );
111				}
112			} else if ( windowPos < lastWindowPos ) {
113				if ( bottom ) {
114					bottom = false;
115					topOffset = ( $sidebar.offset().top > 0 ) ? $sidebar.offset().top - adminbarOffset : 0;
116					$sidebar.attr( 'style', 'top: ' + topOffset + 'px;' );
117				} else if ( ! top && windowPos + adminbarOffset < $sidebar.offset().top ) {
118					top = true;
119					$sidebar.attr( 'style', 'position: fixed;' );
120				}
121			} else {
122				top = bottom = false;

123				topOffset = ( $sidebar.offset().top > 0 ) ? $sidebar.offset().top - adminbarOffset : 0;
124				$sidebar.attr( 'style', 'top: ' + topOffset + 'px;' );
125			}
126		} else if ( ! top ) {
127			top = true;
128			$sidebar.attr( 'style', 'position: fixed;' );
129		}
130
131		lastWindowPos = windowPos;
132	}
133
134	function resizeAndScroll() {
135		resize();
136		scroll();
137	}
138
139	$( document ).ready( function() {
140		$body          = $( document.body );
141		$window        = $( window );
142		$sidebar       = $( '#sidebar' ).first();
143		adminbarOffset = $body.is( '.admin-bar' ) ? $( '#wpadminbar' ).height() : 0;
144
145		$window
146			.on( 'scroll.twentyfifteen', scroll )
147			.on( 'load.twentyfifteen', onResizeARIA )
148			.on( 'resize.twentyfifteen', function() {
149				clearTimeout( resizeTimer );
150				resizeTimer = setTimeout( resizeAndScroll, 500 );
151				onResizeARIA();
152			} );
153		$sidebar.on( 'click.twentyfifteen keydown.twentyfifteen', 'button', resizeAndScroll );
154
155		resizeAndScroll();
156
157		for ( var i = 1; i < 6; i++ ) {
158			setTimeout( resizeAndScroll, 100 * i );
159		}
160	} );
161
162} )( jQuery );