mirror of
https://github.com/WordPress/WordPress.git
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3fb623cf76
See #49572. Built from https://develop.svn.wordpress.org/trunk@48106 git-svn-id: http://core.svn.wordpress.org/trunk@47875 1a063a9b-81f0-0310-95a4-ce76da25c4cd
818 lines
25 KiB
JavaScript
818 lines
25 KiB
JavaScript
/* -----------------------------------------------------------------------------------------------
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Namespace
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--------------------------------------------------------------------------------------------------- */
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var twentytwenty = twentytwenty || {};
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// Set a default value for scrolled.
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twentytwenty.scrolled = 0;
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// polyfill closest
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// https://developer.mozilla.org/en-US/docs/Web/API/Element/closest#Polyfill
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if ( ! Element.prototype.closest ) {
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Element.prototype.closest = function( s ) {
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var el = this;
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do {
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if ( el.matches( s ) ) {
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return el;
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}
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el = el.parentElement || el.parentNode;
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} while ( el !== null && el.nodeType === 1 );
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return null;
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};
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}
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// polyfill forEach
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// https://developer.mozilla.org/en-US/docs/Web/API/NodeList/forEach#Polyfill
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if ( window.NodeList && ! NodeList.prototype.forEach ) {
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NodeList.prototype.forEach = function( callback, thisArg ) {
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var i;
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var len = this.length;
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thisArg = thisArg || window;
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for ( i = 0; i < len; i++ ) {
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callback.call( thisArg, this[ i ], i, this );
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}
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};
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}
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// event "polyfill"
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twentytwenty.createEvent = function( eventName ) {
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var event;
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if ( typeof window.Event === 'function' ) {
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event = new Event( eventName );
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} else {
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event = document.createEvent( 'Event' );
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event.initEvent( eventName, true, false );
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}
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return event;
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};
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// matches "polyfill"
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// https://developer.mozilla.org/es/docs/Web/API/Element/matches
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if ( ! Element.prototype.matches ) {
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Element.prototype.matches =
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Element.prototype.matchesSelector ||
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Element.prototype.mozMatchesSelector ||
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Element.prototype.msMatchesSelector ||
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Element.prototype.oMatchesSelector ||
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Element.prototype.webkitMatchesSelector ||
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function( s ) {
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var matches = ( this.document || this.ownerDocument ).querySelectorAll( s ),
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i = matches.length;
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while ( --i >= 0 && matches.item( i ) !== this ) {}
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return i > -1;
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};
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}
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// Add a class to the body for when touch is enabled for browsers that don't support media queries
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// for interaction media features. Adapted from <https://codepen.io/Ferie/pen/vQOMmO>.
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twentytwenty.touchEnabled = {
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init: function() {
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var matchMedia = function() {
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// Include the 'heartz' as a way to have a non-matching MQ to help terminate the join. See <https://git.io/vznFH>.
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var prefixes = [ '-webkit-', '-moz-', '-o-', '-ms-' ];
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var query = [ '(', prefixes.join( 'touch-enabled),(' ), 'heartz', ')' ].join( '' );
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return window.matchMedia && window.matchMedia( query ).matches;
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};
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if ( ( 'ontouchstart' in window ) || ( window.DocumentTouch && document instanceof window.DocumentTouch ) || matchMedia() ) {
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document.body.classList.add( 'touch-enabled' );
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}
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}
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}; // twentytwenty.touchEnabled
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/* -----------------------------------------------------------------------------------------------
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Cover Modals
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--------------------------------------------------------------------------------------------------- */
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twentytwenty.coverModals = {
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init: function() {
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if ( document.querySelector( '.cover-modal' ) ) {
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// Handle cover modals when they're toggled.
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this.onToggle();
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// When toggled, untoggle if visitor clicks on the wrapping element of the modal.
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this.outsideUntoggle();
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// Close on escape key press.
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this.closeOnEscape();
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// Hide and show modals before and after their animations have played out.
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this.hideAndShowModals();
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}
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},
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// Handle cover modals when they're toggled.
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onToggle: function() {
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document.querySelectorAll( '.cover-modal' ).forEach( function( element ) {
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element.addEventListener( 'toggled', function( event ) {
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var modal = event.target,
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body = document.body;
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if ( modal.classList.contains( 'active' ) ) {
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body.classList.add( 'showing-modal' );
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} else {
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body.classList.remove( 'showing-modal' );
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body.classList.add( 'hiding-modal' );
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// Remove the hiding class after a delay, when animations have been run.
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setTimeout( function() {
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body.classList.remove( 'hiding-modal' );
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}, 500 );
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}
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} );
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} );
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},
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// Close modal on outside click.
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outsideUntoggle: function() {
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document.addEventListener( 'click', function( event ) {
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var target = event.target;
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var modal = document.querySelector( '.cover-modal.active' );
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// if target onclick is <a> with # within the href attribute
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if ( event.target.tagName.toLowerCase() === 'a' && event.target.hash.includes( '#' ) && modal !== null ) {
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// untoggle the modal
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this.untoggleModal( modal );
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// wait 550 and scroll to the anchor
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setTimeout( function() {
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var anchor = document.getElementById( event.target.hash.slice( 1 ) );
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anchor.scrollIntoView();
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}, 550 );
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}
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if ( target === modal ) {
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this.untoggleModal( target );
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}
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}.bind( this ) );
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},
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// Close modal on escape key press.
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closeOnEscape: function() {
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document.addEventListener( 'keydown', function( event ) {
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if ( event.keyCode === 27 ) {
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event.preventDefault();
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document.querySelectorAll( '.cover-modal.active' ).forEach( function( element ) {
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this.untoggleModal( element );
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}.bind( this ) );
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}
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}.bind( this ) );
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},
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// Hide and show modals before and after their animations have played out.
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hideAndShowModals: function() {
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var _doc = document,
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_win = window,
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modals = _doc.querySelectorAll( '.cover-modal' ),
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htmlStyle = _doc.documentElement.style,
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adminBar = _doc.querySelector( '#wpadminbar' );
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function getAdminBarHeight( negativeValue ) {
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var height,
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currentScroll = _win.pageYOffset;
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if ( adminBar ) {
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height = currentScroll + adminBar.getBoundingClientRect().height;
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return negativeValue ? -height : height;
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}
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return currentScroll === 0 ? 0 : -currentScroll;
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}
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function htmlStyles() {
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var overflow = _win.innerHeight > _doc.documentElement.getBoundingClientRect().height;
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return {
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'overflow-y': overflow ? 'hidden' : 'scroll',
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position: 'fixed',
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width: '100%',
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top: getAdminBarHeight( true ) + 'px',
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left: 0
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};
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}
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// Show the modal.
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modals.forEach( function( modal ) {
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modal.addEventListener( 'toggle-target-before-inactive', function( event ) {
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var styles = htmlStyles(),
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offsetY = _win.pageYOffset,
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paddingTop = ( Math.abs( getAdminBarHeight() ) - offsetY ) + 'px',
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mQuery = _win.matchMedia( '(max-width: 600px)' );
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if ( event.target !== modal ) {
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return;
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}
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Object.keys( styles ).forEach( function( styleKey ) {
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htmlStyle.setProperty( styleKey, styles[ styleKey ] );
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} );
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_win.twentytwenty.scrolled = parseInt( styles.top, 10 );
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if ( adminBar ) {
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_doc.body.style.setProperty( 'padding-top', paddingTop );
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if ( mQuery.matches ) {
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if ( offsetY >= getAdminBarHeight() ) {
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modal.style.setProperty( 'top', 0 );
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} else {
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modal.style.setProperty( 'top', ( getAdminBarHeight() - offsetY ) + 'px' );
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}
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}
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}
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modal.classList.add( 'show-modal' );
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} );
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// Hide the modal after a delay, so animations have time to play out.
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modal.addEventListener( 'toggle-target-after-inactive', function( event ) {
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if ( event.target !== modal ) {
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return;
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}
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setTimeout( function() {
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var clickedEl = twentytwenty.toggles.clickedEl;
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modal.classList.remove( 'show-modal' );
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Object.keys( htmlStyles() ).forEach( function( styleKey ) {
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htmlStyle.removeProperty( styleKey );
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} );
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if ( adminBar ) {
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_doc.body.style.removeProperty( 'padding-top' );
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modal.style.removeProperty( 'top' );
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}
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if ( clickedEl !== false ) {
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clickedEl.focus();
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clickedEl = false;
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}
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_win.scrollTo( 0, Math.abs( _win.twentytwenty.scrolled + getAdminBarHeight() ) );
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_win.twentytwenty.scrolled = 0;
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}, 500 );
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} );
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} );
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},
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// Untoggle a modal.
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untoggleModal: function( modal ) {
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var modalTargetClass,
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modalToggle = false;
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// If the modal has specified the string (ID or class) used by toggles to target it, untoggle the toggles with that target string.
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// The modal-target-string must match the string toggles use to target the modal.
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if ( modal.dataset.modalTargetString ) {
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modalTargetClass = modal.dataset.modalTargetString;
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modalToggle = document.querySelector( '*[data-toggle-target="' + modalTargetClass + '"]' );
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}
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// If a modal toggle exists, trigger it so all of the toggle options are included.
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if ( modalToggle ) {
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modalToggle.click();
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// If one doesn't exist, just hide the modal.
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} else {
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modal.classList.remove( 'active' );
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}
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}
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}; // twentytwenty.coverModals
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/* -----------------------------------------------------------------------------------------------
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Intrinsic Ratio Embeds
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--------------------------------------------------------------------------------------------------- */
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twentytwenty.intrinsicRatioVideos = {
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init: function() {
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this.makeFit();
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window.addEventListener( 'resize', function() {
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this.makeFit();
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}.bind( this ) );
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},
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makeFit: function() {
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document.querySelectorAll( 'iframe, object, video' ).forEach( function( video ) {
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var ratio, iTargetWidth,
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container = video.parentNode;
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// Skip videos we want to ignore.
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if ( video.classList.contains( 'intrinsic-ignore' ) || video.parentNode.classList.contains( 'intrinsic-ignore' ) ) {
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return true;
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}
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if ( ! video.dataset.origwidth ) {
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// Get the video element proportions.
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video.setAttribute( 'data-origwidth', video.width );
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video.setAttribute( 'data-origheight', video.height );
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}
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iTargetWidth = container.offsetWidth;
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// Get ratio from proportions.
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ratio = iTargetWidth / video.dataset.origwidth;
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// Scale based on ratio, thus retaining proportions.
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video.style.width = iTargetWidth + 'px';
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video.style.height = ( video.dataset.origheight * ratio ) + 'px';
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} );
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}
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}; // twentytwenty.instrinsicRatioVideos
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/* -----------------------------------------------------------------------------------------------
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Modal Menu
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--------------------------------------------------------------------------------------------------- */
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twentytwenty.modalMenu = {
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init: function() {
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// If the current menu item is in a sub level, expand all the levels higher up on load.
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this.expandLevel();
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this.keepFocusInModal();
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},
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expandLevel: function() {
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var modalMenus = document.querySelectorAll( '.modal-menu' );
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modalMenus.forEach( function( modalMenu ) {
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var activeMenuItem = modalMenu.querySelector( '.current-menu-item' );
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if ( activeMenuItem ) {
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twentytwentyFindParents( activeMenuItem, 'li' ).forEach( function( element ) {
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var subMenuToggle = element.querySelector( '.sub-menu-toggle' );
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if ( subMenuToggle ) {
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twentytwenty.toggles.performToggle( subMenuToggle, true );
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}
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} );
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}
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} );
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},
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keepFocusInModal: function() {
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var _doc = document;
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_doc.addEventListener( 'keydown', function( event ) {
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var toggleTarget, modal, selectors, elements, menuType, bottomMenu, activeEl, lastEl, firstEl, tabKey, shiftKey,
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clickedEl = twentytwenty.toggles.clickedEl;
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if ( clickedEl && _doc.body.classList.contains( 'showing-modal' ) ) {
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toggleTarget = clickedEl.dataset.toggleTarget;
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selectors = 'input, a, button';
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modal = _doc.querySelector( toggleTarget );
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elements = modal.querySelectorAll( selectors );
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elements = Array.prototype.slice.call( elements );
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if ( '.menu-modal' === toggleTarget ) {
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menuType = window.matchMedia( '(min-width: 1000px)' ).matches;
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menuType = menuType ? '.expanded-menu' : '.mobile-menu';
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elements = elements.filter( function( element ) {
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return null !== element.closest( menuType ) && null !== element.offsetParent;
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} );
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elements.unshift( _doc.querySelector( '.close-nav-toggle' ) );
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bottomMenu = _doc.querySelector( '.menu-bottom > nav' );
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if ( bottomMenu ) {
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bottomMenu.querySelectorAll( selectors ).forEach( function( element ) {
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elements.push( element );
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} );
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}
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}
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lastEl = elements[ elements.length - 1 ];
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firstEl = elements[0];
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activeEl = _doc.activeElement;
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tabKey = event.keyCode === 9;
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shiftKey = event.shiftKey;
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if ( ! shiftKey && tabKey && lastEl === activeEl ) {
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event.preventDefault();
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firstEl.focus();
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}
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if ( shiftKey && tabKey && firstEl === activeEl ) {
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event.preventDefault();
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lastEl.focus();
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}
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}
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} );
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}
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}; // twentytwenty.modalMenu
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/* -----------------------------------------------------------------------------------------------
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Primary Menu
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--------------------------------------------------------------------------------------------------- */
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twentytwenty.primaryMenu = {
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init: function() {
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this.focusMenuWithChildren();
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},
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// The focusMenuWithChildren() function implements Keyboard Navigation in the Primary Menu
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// by adding the '.focus' class to all 'li.menu-item-has-children' when the focus is on the 'a' element.
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focusMenuWithChildren: function() {
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// Get all the link elements within the primary menu.
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var links, i, len,
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menu = document.querySelector( '.primary-menu-wrapper' );
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if ( ! menu ) {
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return false;
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}
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links = menu.getElementsByTagName( 'a' );
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// Each time a menu link is focused or blurred, toggle focus.
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for ( i = 0, len = links.length; i < len; i++ ) {
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links[i].addEventListener( 'focus', toggleFocus, true );
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links[i].addEventListener( 'blur', toggleFocus, true );
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}
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//Sets or removes the .focus class on an element.
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function toggleFocus() {
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var self = this;
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// Move up through the ancestors of the current link until we hit .primary-menu.
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while ( -1 === self.className.indexOf( 'primary-menu' ) ) {
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// On li elements toggle the class .focus.
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if ( 'li' === self.tagName.toLowerCase() ) {
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if ( -1 !== self.className.indexOf( 'focus' ) ) {
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self.className = self.className.replace( ' focus', '' );
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} else {
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self.className += ' focus';
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}
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}
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self = self.parentElement;
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}
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}
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}
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}; // twentytwenty.primaryMenu
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/* -----------------------------------------------------------------------------------------------
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Toggles
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--------------------------------------------------------------------------------------------------- */
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twentytwenty.toggles = {
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clickedEl: false,
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init: function() {
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// Do the toggle.
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this.toggle();
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// Check for toggle/untoggle on resize.
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this.resizeCheck();
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// Check for untoggle on escape key press.
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this.untoggleOnEscapeKeyPress();
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},
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performToggle: function( element, instantly ) {
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var target, timeOutTime, classToToggle,
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self = this,
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_doc = document,
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// Get our targets.
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toggle = element,
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targetString = toggle.dataset.toggleTarget,
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activeClass = 'active';
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// Elements to focus after modals are closed.
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if ( ! _doc.querySelectorAll( '.show-modal' ).length ) {
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self.clickedEl = _doc.activeElement;
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}
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if ( targetString === 'next' ) {
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target = toggle.nextSibling;
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} else {
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target = _doc.querySelector( targetString );
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}
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// Trigger events on the toggle targets before they are toggled.
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if ( target.classList.contains( activeClass ) ) {
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target.dispatchEvent( twentytwenty.createEvent( 'toggle-target-before-active' ) );
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} else {
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target.dispatchEvent( twentytwenty.createEvent( 'toggle-target-before-inactive' ) );
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}
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// Get the class to toggle, if specified.
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classToToggle = toggle.dataset.classToToggle ? toggle.dataset.classToToggle : activeClass;
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// For cover modals, set a short timeout duration so the class animations have time to play out.
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timeOutTime = 0;
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if ( target.classList.contains( 'cover-modal' ) ) {
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timeOutTime = 10;
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}
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setTimeout( function() {
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var focusElement,
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subMenued = target.classList.contains( 'sub-menu' ),
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newTarget = subMenued ? toggle.closest( '.menu-item' ).querySelector( '.sub-menu' ) : target,
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duration = toggle.dataset.toggleDuration;
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// Toggle the target of the clicked toggle.
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if ( toggle.dataset.toggleType === 'slidetoggle' && ! instantly && duration !== '0' ) {
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twentytwentyMenuToggle( newTarget, duration );
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} else {
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newTarget.classList.toggle( classToToggle );
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}
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// If the toggle target is 'next', only give the clicked toggle the active class.
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if ( targetString === 'next' ) {
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toggle.classList.toggle( activeClass );
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} else if ( target.classList.contains( 'sub-menu' ) ) {
|
|
toggle.classList.toggle( activeClass );
|
|
} else {
|
|
// If not, toggle all toggles with this toggle target.
|
|
_doc.querySelector( '*[data-toggle-target="' + targetString + '"]' ).classList.toggle( activeClass );
|
|
}
|
|
|
|
// Toggle aria-expanded on the toggle.
|
|
twentytwentyToggleAttribute( toggle, 'aria-expanded', 'true', 'false' );
|
|
|
|
if ( self.clickedEl && -1 !== toggle.getAttribute( 'class' ).indexOf( 'close-' ) ) {
|
|
twentytwentyToggleAttribute( self.clickedEl, 'aria-expanded', 'true', 'false' );
|
|
}
|
|
|
|
// Toggle body class.
|
|
if ( toggle.dataset.toggleBodyClass ) {
|
|
_doc.body.classList.toggle( toggle.dataset.toggleBodyClass );
|
|
}
|
|
|
|
// Check whether to set focus.
|
|
if ( toggle.dataset.setFocus ) {
|
|
focusElement = _doc.querySelector( toggle.dataset.setFocus );
|
|
|
|
if ( focusElement ) {
|
|
if ( target.classList.contains( activeClass ) ) {
|
|
focusElement.focus();
|
|
} else {
|
|
focusElement.blur();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Trigger the toggled event on the toggle target.
|
|
target.dispatchEvent( twentytwenty.createEvent( 'toggled' ) );
|
|
|
|
// Trigger events on the toggle targets after they are toggled.
|
|
if ( target.classList.contains( activeClass ) ) {
|
|
target.dispatchEvent( twentytwenty.createEvent( 'toggle-target-after-active' ) );
|
|
} else {
|
|
target.dispatchEvent( twentytwenty.createEvent( 'toggle-target-after-inactive' ) );
|
|
}
|
|
}, timeOutTime );
|
|
},
|
|
|
|
// Do the toggle.
|
|
toggle: function() {
|
|
var self = this;
|
|
|
|
document.querySelectorAll( '*[data-toggle-target]' ).forEach( function( element ) {
|
|
element.addEventListener( 'click', function( event ) {
|
|
event.preventDefault();
|
|
self.performToggle( element );
|
|
} );
|
|
} );
|
|
},
|
|
|
|
// Check for toggle/untoggle on screen resize.
|
|
resizeCheck: function() {
|
|
if ( document.querySelectorAll( '*[data-untoggle-above], *[data-untoggle-below], *[data-toggle-above], *[data-toggle-below]' ).length ) {
|
|
window.addEventListener( 'resize', function() {
|
|
var winWidth = window.innerWidth,
|
|
toggles = document.querySelectorAll( '.toggle' );
|
|
|
|
toggles.forEach( function( toggle ) {
|
|
var unToggleAbove = toggle.dataset.untoggleAbove,
|
|
unToggleBelow = toggle.dataset.untoggleBelow,
|
|
toggleAbove = toggle.dataset.toggleAbove,
|
|
toggleBelow = toggle.dataset.toggleBelow;
|
|
|
|
// If no width comparison is set, continue.
|
|
if ( ! unToggleAbove && ! unToggleBelow && ! toggleAbove && ! toggleBelow ) {
|
|
return;
|
|
}
|
|
|
|
// If the toggle width comparison is true, toggle the toggle.
|
|
if (
|
|
( ( ( unToggleAbove && winWidth > unToggleAbove ) ||
|
|
( unToggleBelow && winWidth < unToggleBelow ) ) &&
|
|
toggle.classList.contains( 'active' ) ) ||
|
|
( ( ( toggleAbove && winWidth > toggleAbove ) ||
|
|
( toggleBelow && winWidth < toggleBelow ) ) &&
|
|
! toggle.classList.contains( 'active' ) )
|
|
) {
|
|
toggle.click();
|
|
}
|
|
} );
|
|
} );
|
|
}
|
|
},
|
|
|
|
// Close toggle on escape key press.
|
|
untoggleOnEscapeKeyPress: function() {
|
|
document.addEventListener( 'keyup', function( event ) {
|
|
if ( event.key === 'Escape' ) {
|
|
document.querySelectorAll( '*[data-untoggle-on-escape].active' ).forEach( function( element ) {
|
|
if ( element.classList.contains( 'active' ) ) {
|
|
element.click();
|
|
}
|
|
} );
|
|
}
|
|
} );
|
|
}
|
|
|
|
}; // twentytwenty.toggles
|
|
|
|
/**
|
|
* Is the DOM ready?
|
|
*
|
|
* This implementation is coming from https://gomakethings.com/a-native-javascript-equivalent-of-jquerys-ready-method/
|
|
*
|
|
* @param {Function} fn Callback function to run.
|
|
*/
|
|
function twentytwentyDomReady( fn ) {
|
|
if ( typeof fn !== 'function' ) {
|
|
return;
|
|
}
|
|
|
|
if ( document.readyState === 'interactive' || document.readyState === 'complete' ) {
|
|
return fn();
|
|
}
|
|
|
|
document.addEventListener( 'DOMContentLoaded', fn, false );
|
|
}
|
|
|
|
twentytwentyDomReady( function() {
|
|
twentytwenty.toggles.init(); // Handle toggles.
|
|
twentytwenty.coverModals.init(); // Handle cover modals.
|
|
twentytwenty.intrinsicRatioVideos.init(); // Retain aspect ratio of videos on window resize.
|
|
twentytwenty.modalMenu.init(); // Modal Menu.
|
|
twentytwenty.primaryMenu.init(); // Primary Menu.
|
|
twentytwenty.touchEnabled.init(); // Add class to body if device is touch-enabled.
|
|
} );
|
|
|
|
/* -----------------------------------------------------------------------------------------------
|
|
Helper functions
|
|
--------------------------------------------------------------------------------------------------- */
|
|
|
|
/* Toggle an attribute ----------------------- */
|
|
|
|
function twentytwentyToggleAttribute( element, attribute, trueVal, falseVal ) {
|
|
if ( trueVal === undefined ) {
|
|
trueVal = true;
|
|
}
|
|
if ( falseVal === undefined ) {
|
|
falseVal = false;
|
|
}
|
|
if ( element.getAttribute( attribute ) !== trueVal ) {
|
|
element.setAttribute( attribute, trueVal );
|
|
} else {
|
|
element.setAttribute( attribute, falseVal );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Toggle a menu item on or off.
|
|
*
|
|
* @param {HTMLElement} target
|
|
* @param {number} duration
|
|
*/
|
|
function twentytwentyMenuToggle( target, duration ) {
|
|
var initialParentHeight, finalParentHeight, menu, menuItems, transitionListener,
|
|
initialPositions = [],
|
|
finalPositions = [];
|
|
|
|
if ( ! target ) {
|
|
return;
|
|
}
|
|
|
|
menu = target.closest( '.menu-wrapper' );
|
|
|
|
// Step 1: look at the initial positions of every menu item.
|
|
menuItems = menu.querySelectorAll( '.menu-item' );
|
|
|
|
menuItems.forEach( function( menuItem, index ) {
|
|
initialPositions[ index ] = { x: menuItem.offsetLeft, y: menuItem.offsetTop };
|
|
} );
|
|
initialParentHeight = target.parentElement.offsetHeight;
|
|
|
|
target.classList.add( 'toggling-target' );
|
|
|
|
// Step 2: toggle target menu item and look at the final positions of every menu item.
|
|
target.classList.toggle( 'active' );
|
|
|
|
menuItems.forEach( function( menuItem, index ) {
|
|
finalPositions[ index ] = { x: menuItem.offsetLeft, y: menuItem.offsetTop };
|
|
} );
|
|
finalParentHeight = target.parentElement.offsetHeight;
|
|
|
|
// Step 3: close target menu item again.
|
|
// The whole process happens without giving the browser a chance to render, so it's invisible.
|
|
target.classList.toggle( 'active' );
|
|
|
|
/*
|
|
* Step 4: prepare animation.
|
|
* Position all the items with absolute offsets, at the same starting position.
|
|
* Shouldn't result in any visual changes if done right.
|
|
*/
|
|
menu.classList.add( 'is-toggling' );
|
|
target.classList.toggle( 'active' );
|
|
menuItems.forEach( function( menuItem, index ) {
|
|
var initialPosition = initialPositions[ index ];
|
|
if ( initialPosition.y === 0 && menuItem.parentElement === target ) {
|
|
initialPosition.y = initialParentHeight;
|
|
}
|
|
menuItem.style.transform = 'translate(' + initialPosition.x + 'px, ' + initialPosition.y + 'px)';
|
|
} );
|
|
|
|
/*
|
|
* The double rAF is unfortunately needed, since we're toggling CSS classes, and
|
|
* the only way to ensure layout completion here across browsers is to wait twice.
|
|
* This just delays the start of the animation by 2 frames and is thus not an issue.
|
|
*/
|
|
requestAnimationFrame( function() {
|
|
requestAnimationFrame( function() {
|
|
/*
|
|
* Step 5: start animation by moving everything to final position.
|
|
* All the layout work has already happened, while we were preparing for the animation.
|
|
* The animation now runs entirely in CSS, using cheap CSS properties (opacity and transform)
|
|
* that don't trigger the layout or paint stages.
|
|
*/
|
|
menu.classList.add( 'is-animating' );
|
|
menuItems.forEach( function( menuItem, index ) {
|
|
var finalPosition = finalPositions[ index ];
|
|
if ( finalPosition.y === 0 && menuItem.parentElement === target ) {
|
|
finalPosition.y = finalParentHeight;
|
|
}
|
|
if ( duration !== undefined ) {
|
|
menuItem.style.transitionDuration = duration + 'ms';
|
|
}
|
|
menuItem.style.transform = 'translate(' + finalPosition.x + 'px, ' + finalPosition.y + 'px)';
|
|
} );
|
|
if ( duration !== undefined ) {
|
|
target.style.transitionDuration = duration + 'ms';
|
|
}
|
|
} );
|
|
|
|
// Step 6: finish toggling.
|
|
// Remove all transient classes when the animation ends.
|
|
transitionListener = function() {
|
|
menu.classList.remove( 'is-animating' );
|
|
menu.classList.remove( 'is-toggling' );
|
|
target.classList.remove( 'toggling-target' );
|
|
menuItems.forEach( function( menuItem ) {
|
|
menuItem.style.transform = '';
|
|
menuItem.style.transitionDuration = '';
|
|
} );
|
|
target.style.transitionDuration = '';
|
|
target.removeEventListener( 'transitionend', transitionListener );
|
|
};
|
|
|
|
target.addEventListener( 'transitionend', transitionListener );
|
|
} );
|
|
}
|
|
|
|
/**
|
|
* Traverses the DOM up to find elements matching the query.
|
|
*
|
|
* @param {HTMLElement} target
|
|
* @param {string} query
|
|
* @return {NodeList} parents matching query
|
|
*/
|
|
function twentytwentyFindParents( target, query ) {
|
|
var parents = [];
|
|
|
|
// Recursively go up the DOM adding matches to the parents array.
|
|
function traverse( item ) {
|
|
var parent = item.parentNode;
|
|
if ( parent instanceof HTMLElement ) {
|
|
if ( parent.matches( query ) ) {
|
|
parents.push( parent );
|
|
}
|
|
traverse( parent );
|
|
}
|
|
}
|
|
|
|
traverse( target );
|
|
|
|
return parents;
|
|
}
|