131 lines
4.0 KiB
JavaScript
131 lines
4.0 KiB
JavaScript
/* 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, $window, $document, $sidebar, adminbarOffset, top = false,
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bottom = false, windowWidth, windowHeight, lastWindowPos = 0,
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topOffset = 0, documentHeight, sidebarHeight, resizeTimer;
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// Add dropdown toggle that display child menu items.
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$( '.main-navigation .page_item_has_children > a, .main-navigation .menu-item-has-children > a' ).after( '<button class="dropdown-toggle" aria-expanded="false">' + screenReaderText.expand + '</button>' );
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$( '.dropdown-toggle' ).click( function( e ) {
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var _this = $( this );
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e.preventDefault();
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_this.toggleClass( 'toggle-on' );
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_this.next( '.children, .sub-menu' ).toggleClass( 'toggled-on' );
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_this.attr( 'aria-expanded', _this.attr( 'aria-expanded' ) === 'false' ? 'true' : 'false' );
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_this.html( _this.html() === screenReaderText.expand ? screenReaderText.collapse : screenReaderText.expand );
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} );
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// Enable menu toggle for small screens.
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( function() {
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var secondary = $( '#secondary' ), button, menu, widgets, social;
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if ( ! secondary ) {
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return;
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}
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button = $( '.site-branding' ).find( '.secondary-toggle' );
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if ( ! button ) {
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return;
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}
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// Hide button if there are no widgets and the menus are missing or empty.
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menu = secondary.find( '.nav-menu' );
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widgets = secondary.find( '#widget-area' );
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social = secondary.find( '#social-navigation' );
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if ( ! widgets.length && ! social.length && ( ! menu || ! menu.children().length ) ) {
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button.hide();
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return;
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}
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button.on( 'click.twentyfifteen', function() {
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secondary.toggleClass( 'toggled-on' );
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secondary.trigger( 'resize' );
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$( this ).toggleClass( 'toggled-on' );
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} );
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} )();
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// Sidebar scrolling.
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function resize() {
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windowWidth = $window.width();
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windowHeight = $window.height();
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documentHeight = $document.height();
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sidebarHeight = $sidebar.height();
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if ( 955 >= windowWidth ) {
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top = bottom = false;
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$sidebar.removeAttr( 'style' );
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}
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}
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function scroll() {
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var windowPos = $window.scrollTop();
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if ( 955 <= windowWidth && sidebarHeight + adminbarOffset < documentHeight ) {
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if ( sidebarHeight + adminbarOffset > windowHeight ) {
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if ( windowPos > lastWindowPos ) {
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if ( top ) {
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top = false;
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topOffset = ( $sidebar.offset().top > 0 ) ? $sidebar.offset().top - adminbarOffset : 0;
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$sidebar.attr( 'style', 'top: ' + topOffset + 'px;' );
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} else if ( ! bottom && windowPos + windowHeight > sidebarHeight + $sidebar.offset().top ) {
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bottom = true;
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$sidebar.attr( 'style', 'position: fixed;bottom: 0;' );
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}
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} else if ( windowPos < lastWindowPos ) {
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if ( bottom ) {
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bottom = false;
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topOffset = ( $sidebar.offset().top > 0 ) ? $sidebar.offset().top - adminbarOffset : 0;
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$sidebar.attr( 'style', 'top: ' + topOffset + 'px;' );
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} else if ( ! top && windowPos + adminbarOffset < $sidebar.offset().top ) {
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top = true;
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$sidebar.attr( 'style', 'position: fixed;' );
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}
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} else {
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top = bottom = false;
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topOffset = ( $sidebar.offset().top > 0 ) ? $sidebar.offset().top - adminbarOffset : 0;
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$sidebar.attr( 'style', 'top: ' + topOffset + 'px;' );
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}
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} else if ( ! top ) {
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top = true;
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$sidebar.attr( 'style', 'position: fixed;' );
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}
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}
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lastWindowPos = windowPos;
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}
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function resizeAndScroll() {
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resize();
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scroll();
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}
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$( document ).ready( function() {
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$body = $( 'body' );
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$window = $( window );
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$document = $( document );
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$sidebar = $( '#sidebar' ).first();
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adminbarOffset = $body.is( '.admin-bar' ) ? $( '#wpadminbar' ).height() : 0;
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$window
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.on( 'scroll.twentyfifteen', scroll )
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.on( 'resize.twentyfifteen', function() {
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clearTimeout( resizeTimer );
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resizeTimer = setTimeout( resizeAndScroll, 500 );
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} );
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$sidebar.on( 'click keydown', 'button', resizeAndScroll );
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resizeAndScroll();
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for ( var i = 1; i < 6; i++ ) {
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setTimeout( resizeAndScroll, 100 * i );
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}
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} );
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} )( jQuery );
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