mirror of
https://github.com/WordPress/WordPress.git
synced 2024-11-04 09:49:37 +01:00
784 lines
24 KiB
JavaScript
784 lines
24 KiB
JavaScript
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/* -----------------------------------------------------------------------------------------------
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Namespace
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--------------------------------------------------------------------------------------------------- */
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var twentytwenty = twentytwenty || {};
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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.matches ) {
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Element.prototype.matches = Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector;
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}
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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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thisArg = thisArg || window;
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for ( i = 0; i < this.length; 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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/* -----------------------------------------------------------------------------------------------
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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.querySelector( '.cover-modal' ).addEventListener( 'toggled', function( event ) {
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var modal, body;
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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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// 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 === 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 modals = document.querySelectorAll( '.cover-modal' ),
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htmlStyle = document.documentElement.style;
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var getAdminBarHeight = function( negativeValue ) {
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var adminBar = document.querySelector( '#wpadminbar' );
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if ( adminBar ) {
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return ( negativeValue ? '-' : '' ) + adminBar.getBoundingClientRect().height + 'px';
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}
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return 0;
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};
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function htmlStyles() {
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return {
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'overflow-y': 'scroll',
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position: 'fixed',
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width: '100%',
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top: getAdminBarHeight( true ),
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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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if ( event.target !== modal ) {
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return;
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}
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window.scrollTo( { top: 0 } );
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Object.keys( htmlStyles() ).forEach( function( styleKey ) {
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htmlStyle.setProperty( styleKey, htmlStyles()[ styleKey ] );
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} );
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document.body.style.setProperty( 'padding-top', getAdminBarHeight() );
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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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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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document.body.style.removeProperty( 'padding-top' );
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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 modalToggle, 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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Focus Management
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--------------------------------------------------------------------------------------------------- */
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twentytwenty.focusManagement = {
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init: function() {
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// If the visitor tabs out of the main menu, return focus to the navigation toggle
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// Also, if the visitor tabs into a hidden element, move the focus to the element after the hidden element
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this.focusLoop();
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},
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focusLoop: function() {
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document.addEventListener( 'focusin', function( event ) {
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var element = event.target;
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var menuModal = document.querySelector( '.menu-modal' );
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var headerToggles = document.querySelector( '.header-toggles' );
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var searchModal = document.querySelector( '.search-modal' );
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if ( menuModal && menuModal.classList.contains( '.active' ) ) {
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if ( ! menuModal.contains( element ) && headerToggles && ! headerToggles.contains( element ) ) {
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document.querySelector( '.close-nav-toggle' ).focus();
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}
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} else if ( searchModal && ! searchModal.classList.contains( '.active' ) ) {
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if ( ! searchModal.contains( element ) ) {
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searchModal.querySelector( '.search-field' ).focus();
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}
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}
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} );
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},
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}; // twentytwenty.focusManagement
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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( 'fit-videos', function() {
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this.makeFit();
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}.bind( this ) );
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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 container, 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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Smooth Scroll
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--------------------------------------------------------------------------------------------------- */
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twentytwenty.smoothScroll = {
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init: function() {
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// Scroll to anchor
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this.scrollToAnchor();
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// Scroll to element
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this.scrollToElement();
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},
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// Scroll to anchor
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scrollToAnchor: function() {
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var anchorElements = document.querySelectorAll( 'a[href*="#"]' );
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var anchorElementsList = Array.prototype.slice.call( anchorElements );
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anchorElementsList.filter( function( element ) {
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if ( element.href === '#' || element.href === '#0' || element.classList.contains( '.do-not-scroll' ) || element.classList.contains( 'skip-link' ) ) {
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return false;
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}
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return true;
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} ).forEach( function( element ) {
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element.addEventListener( 'click', function( event ) {
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var target, scrollOffset, originalOffset, adminBar, scrollSpeed, additionalOffset;
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// On-page links
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if ( window.location.hostname === event.target.hostname ) {
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// Figure out element to scroll to
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target = window.location.hash !== '' && document.querySelector( window.location.hash );
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target = target ? target : event.target.hash !== '' && document.querySelector( event.target.hash );
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// Does a scroll target exist?
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if ( target ) {
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// Only prevent default if animation is actually gonna happen
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event.preventDefault();
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// Get options
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additionalOffset = event.target.dataset.additionalOffset;
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scrollSpeed = event.target.dataset.scrollSpeed ? event.target.dataset.scrollSpeed : 500;
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// Determine offset
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adminBar = document.querySelector( '#wpadminbar' );
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originalOffset = target.getBoundingClientRect().top + window.pageYOffset;
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scrollOffset = additionalOffset ? originalOffset + additionalOffset : originalOffset;
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if ( adminBar && event.target.className === 'to-the-top' ) {
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scrollOffset = scrollOffset - adminBar.getBoundingClientRect().height;
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}
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twentytwentyScrollTo( scrollOffset, null, scrollSpeed );
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window.location.hash = event.target.hash.slice( 1 );
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}
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}
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} );
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} );
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},
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// Scroll to element
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scrollToElement: function() {
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var scrollToElement = document.querySelector( '*[data-scroll-to]' );
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if ( scrollToElement ) {
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scrollToElement.addEventListener( 'click', function( event ) {
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var target, originalOffset, additionalOffset, scrollOffset, scrollSpeed;
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// Figure out element to scroll to
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target = event.target.dataset.twentytwentyScrollTo;
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// Make sure said element exists
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if ( target ) {
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event.preventDefault();
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// Get options
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additionalOffset = event.target.dataset.additionalOffset;
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scrollSpeed = event.target.dataset.scrollSpeed ? event.target.dataset.scrollSpeed : 500;
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// Determine offset
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originalOffset = target.getBoundingClientRect().top + window.pageYOffset;
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scrollOffset = additionalOffset ? originalOffset + additionalOffset : originalOffset;
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twentytwentyScrollTo( scrollOffset, null, scrollSpeed );
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}
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} );
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}
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},
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||
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}; // twentytwenty.smoothScroll
|
||
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|
||
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/* -----------------------------------------------------------------------------------------------
|
||
|
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Main Menu
|
||
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--------------------------------------------------------------------------------------------------- */
|
||
|
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twentytwenty.modalMenu = {
|
||
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|
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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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||
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this.expandLevel();
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||
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},
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||
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expandLevel: function() {
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||
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var modalMenu = document.querySelector( '.modal-menu' );
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||
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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 ) {
|
||
|
|
var subMenuToggle = element.querySelector( '.sub-menu-toggle' );
|
||
|
|
if ( subMenuToggle ) {
|
||
|
|
subMenuToggle.click();
|
||
|
|
}
|
||
|
|
} );
|
||
|
|
}
|
||
|
|
},
|
||
|
|
}; // twentytwenty.modalMenu
|
||
|
|
|
||
|
|
/* -----------------------------------------------------------------------------------------------
|
||
|
|
Toggles
|
||
|
|
--------------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
twentytwenty.toggles = {
|
||
|
|
|
||
|
|
init: function() {
|
||
|
|
// Do the toggle
|
||
|
|
this.toggle();
|
||
|
|
|
||
|
|
// Check for toggle/untoggle on resize
|
||
|
|
this.resizeCheck();
|
||
|
|
|
||
|
|
// Check for untoggle on escape key press
|
||
|
|
this.untoggleOnEscapeKeyPress();
|
||
|
|
},
|
||
|
|
|
||
|
|
// Do the toggle
|
||
|
|
toggle: function() {
|
||
|
|
document.querySelectorAll( '*[data-toggle-target]' ).forEach( function( element ) {
|
||
|
|
element.addEventListener( 'click', function() {
|
||
|
|
var toggle, targetString, target, timeOutTime, classToToggle, activeClass;
|
||
|
|
|
||
|
|
// Get our targets
|
||
|
|
toggle = element;
|
||
|
|
targetString = toggle.dataset.toggleTarget;
|
||
|
|
activeClass = 'active';
|
||
|
|
|
||
|
|
if ( targetString === 'next' ) {
|
||
|
|
target = toggle.nextSibling;
|
||
|
|
} else {
|
||
|
|
target = document.querySelector( targetString );
|
||
|
|
}
|
||
|
|
|
||
|
|
// Trigger events on the toggle targets before they are toggled
|
||
|
|
if ( target.classList.contains( activeClass ) ) {
|
||
|
|
target.dispatchEvent( twentytwenty.createEvent( 'toggle-target-before-active' ) );
|
||
|
|
} else {
|
||
|
|
target.dispatchEvent( twentytwenty.createEvent( 'toggle-target-before-inactive' ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
// Get the class to toggle, if specified
|
||
|
|
classToToggle = toggle.dataset.classToToggle ? toggle.dataset.classToToggle : activeClass;
|
||
|
|
|
||
|
|
// For cover modals, set a short timeout duration so the class animations have time to play out
|
||
|
|
timeOutTime = 0;
|
||
|
|
|
||
|
|
if ( target.classList.contains( 'cover-modal' ) ) {
|
||
|
|
timeOutTime = 10;
|
||
|
|
}
|
||
|
|
|
||
|
|
setTimeout( function() {
|
||
|
|
var focusElement, duration, newTarget, subMenued;
|
||
|
|
|
||
|
|
// Toggle the target of the clicked toggle
|
||
|
|
if ( toggle.dataset.toggleType === 'slidetoggle' ) {
|
||
|
|
duration = toggle.dataset.toggleDuration ? toggle.dataset.toggleDuration : 250;
|
||
|
|
subMenued = target.classList.contains( 'sub-menu' );
|
||
|
|
newTarget = subMenued ? toggle.closest( '.menu-item' ).querySelector( '.sub-menu' ) : target;
|
||
|
|
|
||
|
|
twentytwentySlideToggle( newTarget, duration );
|
||
|
|
} else {
|
||
|
|
target.classList.toggle( classToToggle );
|
||
|
|
}
|
||
|
|
|
||
|
|
// If the toggle target is 'next', only give the clicked toggle the active class
|
||
|
|
if ( targetString === 'next' ) {
|
||
|
|
toggle.classList.toggle( activeClass );
|
||
|
|
} else if ( target.classList.contains( 'sub-menu' ) ) {
|
||
|
|
toggle.classList.toggle( activeClass );
|
||
|
|
} else {
|
||
|
|
// If not, toggle all toggles with this toggle target
|
||
|
|
document.querySelector( '*[data-toggle-target="' + targetString + '"]' ).classList.toggle( activeClass );
|
||
|
|
}
|
||
|
|
|
||
|
|
// Toggle aria-expanded on the target
|
||
|
|
twentytwentyToggleAttribute( target, 'aria-expanded', 'true', 'false' );
|
||
|
|
|
||
|
|
// Toggle aria-expanded on the toggle
|
||
|
|
twentytwentyToggleAttribute( toggle, 'aria-expanded', 'true', 'false' );
|
||
|
|
|
||
|
|
// Toggle body class
|
||
|
|
if ( toggle.dataset.toggleBodyClass ) {
|
||
|
|
document.querySelector( 'body' ).classList.toggle( toggle.dataset.toggleBodyClass );
|
||
|
|
}
|
||
|
|
|
||
|
|
// Check whether to set focus
|
||
|
|
if ( toggle.dataset.setFocus ) {
|
||
|
|
focusElement = document.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 );
|
||
|
|
} );
|
||
|
|
} );
|
||
|
|
},
|
||
|
|
|
||
|
|
// 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.smoothScroll.init(); // Smooth scroll to anchor link or a specific element
|
||
|
|
twentytwenty.modalMenu.init(); // Modal Menu
|
||
|
|
twentytwenty.focusManagement.init(); // Focus Management
|
||
|
|
} );
|
||
|
|
|
||
|
|
/* -----------------------------------------------------------------------------------------------
|
||
|
|
Helper functions
|
||
|
|
--------------------------------------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
/* Toggle an attribute ----------------------- */
|
||
|
|
|
||
|
|
function twentytwentyToggleAttribute( element, attribute, trueVal, falseVal ) {
|
||
|
|
if ( trueVal === undefined ) {
|
||
|
|
trueVal = true;
|
||
|
|
}
|
||
|
|
if ( falseVal === undefined ) {
|
||
|
|
falseVal = false;
|
||
|
|
}
|
||
|
|
if ( element[ attribute ] !== trueVal ) {
|
||
|
|
element.setAttribute( attribute, trueVal );
|
||
|
|
} else {
|
||
|
|
element.setAttribute( attribute, falseVal );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* twentytwentySlideUp
|
||
|
|
*
|
||
|
|
* this implementation is coming from https://w3bits.com/javascript-slidetoggle/
|
||
|
|
*
|
||
|
|
* @param {HTMLElement} target
|
||
|
|
* @param {number} duration
|
||
|
|
*/
|
||
|
|
function twentytwentySlideUp( target, duration ) {
|
||
|
|
target.style.transitionProperty = 'height, margin, padding'; /* [1.1] */
|
||
|
|
target.style.transitionDuration = duration + 'ms'; /* [1.2] */
|
||
|
|
target.style.boxSizing = 'border-box'; /* [2] */
|
||
|
|
target.style.height = target.offsetHeight + 'px'; /* [3] */
|
||
|
|
target.style.height = 0; /* [4] */
|
||
|
|
target.style.paddingTop = 0; /* [5.1] */
|
||
|
|
target.style.paddingBottom = 0; /* [5.2] */
|
||
|
|
target.style.marginTop = 0; /* [6.1] */
|
||
|
|
target.style.marginBottom = 0; /* [7.2] */
|
||
|
|
target.style.overflow = 'hidden'; /* [7] */
|
||
|
|
window.setTimeout( function() {
|
||
|
|
target.style.display = 'none'; /* [8] */
|
||
|
|
target.style.removeProperty( 'height' ); /* [9] */
|
||
|
|
target.style.removeProperty( 'padding-top' ); /* [10.1] */
|
||
|
|
target.style.removeProperty( 'padding-bottom' ); /* [10.2] */
|
||
|
|
target.style.removeProperty( 'margin-top' ); /* [11.1] */
|
||
|
|
target.style.removeProperty( 'margin-bottom' ); /* [11.2] */
|
||
|
|
target.style.removeProperty( 'overflow' ); /* [12] */
|
||
|
|
target.style.removeProperty( 'transition-duration' ); /* [13.1] */
|
||
|
|
target.style.removeProperty( 'transition-property' ); /* [13.2] */
|
||
|
|
}, duration );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* twentytwentySlideDown
|
||
|
|
*
|
||
|
|
* this implementation is coming from https://w3bits.com/javascript-slidetoggle/
|
||
|
|
*
|
||
|
|
* @param {HTMLElement} target
|
||
|
|
* @param {number} duration
|
||
|
|
*/
|
||
|
|
function twentytwentySlideDown( target, duration ) {
|
||
|
|
var height, display;
|
||
|
|
target.style.removeProperty( 'display' ); /* [1] */
|
||
|
|
display = window.getComputedStyle( target ).display;
|
||
|
|
if ( display === 'none' ) { /* [2] */
|
||
|
|
display = 'block';
|
||
|
|
}
|
||
|
|
target.style.display = display;
|
||
|
|
|
||
|
|
height = target.offsetHeight; /* [3] */
|
||
|
|
target.style.height = 0; /* [4] */
|
||
|
|
target.style.paddingTop = 0; /* [5.1] */
|
||
|
|
target.style.paddingBottom = 0; /* [5.2] */
|
||
|
|
target.style.marginTop = 0; /* [6.1] */
|
||
|
|
target.style.marginBottom = 0; /* [6.2] */
|
||
|
|
target.style.overflow = 'hidden'; /* [7] */
|
||
|
|
|
||
|
|
target.style.boxSizing = 'border-box'; /* [8] */
|
||
|
|
target.style.transitionProperty = 'height, margin, padding'; /* [9.1] */
|
||
|
|
target.style.transitionDuration = duration + 'ms'; /* [9.2] */
|
||
|
|
target.style.height = height + 'px'; /* [10] */
|
||
|
|
target.style.removeProperty( 'padding-top' ); /* [11.1] */
|
||
|
|
target.style.removeProperty( 'padding-bottom' ); /* [11.2] */
|
||
|
|
target.style.removeProperty( 'margin-top' ); /* [12.1] */
|
||
|
|
target.style.removeProperty( 'margin-bottom' ); /* [12.2] */
|
||
|
|
|
||
|
|
window.setTimeout( function() {
|
||
|
|
target.style.removeProperty( 'height' ); /* [13] */
|
||
|
|
target.style.removeProperty( 'overflow' ); /* [14] */
|
||
|
|
target.style.removeProperty( 'transition-duration' ); /* [15.1] */
|
||
|
|
target.style.removeProperty( 'transition-property' ); /* [15.2] */
|
||
|
|
}, duration );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* twentytwentySlideToggle
|
||
|
|
*
|
||
|
|
* this implementation is coming from https://w3bits.com/javascript-slidetoggle/
|
||
|
|
*
|
||
|
|
* @param {HTMLElement} target
|
||
|
|
* @param {number} duration
|
||
|
|
*/
|
||
|
|
function twentytwentySlideToggle( target, duration ) {
|
||
|
|
if ( duration === undefined ) {
|
||
|
|
duration = 500;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( window.getComputedStyle( target ).display === 'none' ) {
|
||
|
|
return twentytwentySlideDown( target, duration );
|
||
|
|
}
|
||
|
|
return twentytwentySlideUp( target, duration );
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 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;
|
||
|
|
}
|
||
|
|
|
||
|
|
// twentytwentyEaseInOutQuad functions http://goo.gl/5HLl8
|
||
|
|
function twentytwentyEaseInOutQuad( t, b, c, d ) {
|
||
|
|
t /= d / 2;
|
||
|
|
if ( t < 1 ) {
|
||
|
|
return ( ( ( c / 2 ) * t ) * t ) + b;
|
||
|
|
}
|
||
|
|
t--;
|
||
|
|
return ( ( -c / 2 ) * ( ( t * ( t - 2 ) ) - 1 ) ) + b;
|
||
|
|
}
|
||
|
|
|
||
|
|
function twentytwentyScrollTo( to, callback, duration ) {
|
||
|
|
var start, change, increment, currentTime;
|
||
|
|
|
||
|
|
function move( amount ) {
|
||
|
|
document.documentElement.scrollTop = amount;
|
||
|
|
document.body.parentNode.scrollTop = amount;
|
||
|
|
document.body.scrollTop = amount;
|
||
|
|
}
|
||
|
|
|
||
|
|
start = document.documentElement.scrollTop || document.body.parentNode.scrollTop || document.body.scrollTop;
|
||
|
|
change = to - start;
|
||
|
|
increment = 20;
|
||
|
|
currentTime = 0;
|
||
|
|
|
||
|
|
duration = ( typeof ( duration ) === 'undefined' ) ? 500 : duration;
|
||
|
|
|
||
|
|
function animateScroll() {
|
||
|
|
var val;
|
||
|
|
|
||
|
|
// increment the time
|
||
|
|
currentTime += increment;
|
||
|
|
// find the value with the quadratic in-out twentytwentyEaseInOutQuad function
|
||
|
|
val = twentytwentyEaseInOutQuad( currentTime, start, change, duration );
|
||
|
|
// move the document.body
|
||
|
|
move( val );
|
||
|
|
// do the animation unless its over
|
||
|
|
if ( currentTime < duration ) {
|
||
|
|
window.requestAnimationFrame( animateScroll );
|
||
|
|
} else if ( callback && typeof ( callback ) === 'function' ) {
|
||
|
|
// the animation is done so lets callback
|
||
|
|
callback();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
animateScroll();
|
||
|
|
}
|