https://www.wealthysinglemommy.com/wp-content/themes/wealthy-single-mommy/js/twentytwenty.js?ver=1.1
1/* ----------------------------------------------------------------------------------------------- 2 Parent file: wp-content/themes/twentytwenty/assets/js/index.js 3 Removed makeFit: function 4--------------------------------------------------------------------------------------------------- */ 5 6var twentytwenty = twentytwenty || {}; 7 8// Set a default value for scrolled. 9twentytwenty.scrolled = 0; 10 11// polyfill closest 12// https://developer.mozilla.org/en-US/docs/Web/API/Element/closest#Polyfill 13if ( ! Element.prototype.closest ) { 14 Element.prototype.closest = function( s ) { 15 var el = this; 16 17 do { 18 if ( el.matches( s ) ) { 19 return el; 20 } 21 22 el = el.parentElement || el.parentNode; 23 } while ( el !== null && el.nodeType === 1 ); 24 25 return null; 26 }; 27} 28 29// polyfill forEach 30// https://developer.mozilla.org/en-US/docs/Web/API/NodeList/forEach#Polyfill 31if ( window.NodeList && ! NodeList.prototype.forEach ) { 32 NodeList.prototype.forEach = function( callback, thisArg ) { 33 var i; 34 var len = this.length; 35 36 thisArg = thisArg || window; 37 38 for ( i = 0; i < len; i++ ) { 39 callback.call( thisArg, this[ i ], i, this ); 40 } 41 }; 42} 43 44// event "polyfill" 45twentytwenty.createEvent = function( eventName ) { 46 var event; 47 if ( typeof window.Event === 'function' ) { 48 event = new Event( eventName ); 49 } else { 50 event = document.createEvent( 'Event' ); 51 event.initEvent( eventName, true, false ); 52 } 53 return event; 54}; 55 56// matches "polyfill" 57// https://developer.mozilla.org/es/docs/Web/API/Element/matches 58if ( ! Element.prototype.matches ) { 59 Element.prototype.matches = 60 Element.prototype.matchesSelector || 61 Element.prototype.mozMatchesSelector || 62 Element.prototype.msMatchesSelector || 63 Element.prototype.oMatchesSelector || 64 Element.prototype.webkitMatchesSelector || 65 function( s ) { 66 var matches = ( this.document || this.ownerDocument ).querySelectorAll( s ), 67 i = matches.length; 68 while ( --i >= 0 && matches.item( i ) !== this ) {} 69 return i > -1; 70 }; 71} 72 73// Add a class to the body for when touch is enabled for browsers that don't support media queries 74// for interaction media features. Adapted from <https://codepen.io/Ferie/pen/vQOMmO>. 75twentytwenty.touchEnabled = { 76 77 init: function() { 78 var matchMedia = function() { 79 // Include the 'heartz' as a way to have a non-matching MQ to help terminate the join. See <https://git.io/vznFH>. 80 var prefixes = [ '-webkit-', '-moz-', '-o-', '-ms-' ]; 81 var query = [ '(', prefixes.join( 'touch-enabled),(' ), 'heartz', ')' ].join( '' ); 82 return window.matchMedia && window.matchMedia( query ).matches; 83 }; 84 85 if ( ( 'ontouchstart' in window ) || ( window.DocumentTouch && document instanceof window.DocumentTouch ) || matchMedia() ) { 86 document.body.classList.add( 'touch-enabled' ); 87 } 88 } 89}; // twentytwenty.touchEnabled 90 91/* ----------------------------------------------------------------------------------------------- 92 Cover Modals 93--------------------------------------------------------------------------------------------------- */ 94 95twentytwenty.coverModals = { 96 97 init: function() { 98 if ( document.querySelector( '.cover-modal' ) ) { 99 // Handle cover modals when they're toggled. 100 this.onToggle(); 101 102 // When toggled, untoggle if visitor clicks on the wrapping element of the modal. 103 this.outsideUntoggle(); 104 105 // Close on escape key press. 106 this.closeOnEscape(); 107 108 // Hide and show modals before and after their animations have played out. 109 this.hideAndShowModals(); 110 } 111 }, 112 113 // Handle cover modals when they're toggled. 114 onToggle: function() { 115 document.querySelectorAll( '.cover-modal' ).forEach( function( element ) { 116 element.addEventListener( 'toggled', function( event ) { 117 var modal = event.target, 118 body = document.body; 119 120 if ( modal.classList.contains( 'active' ) ) { 121 body.classList.add( 'showing-modal' ); 122 } else { 123 body.classList.remove( 'showing-modal' ); 124 body.classList.add( 'hiding-modal' ); 125 126 // Remove the hiding class after a delay, when animations have been run. 127 setTimeout( function() { 128 body.classList.remove( 'hiding-modal' ); 129 }, 500 ); 130 } 131 } ); 132 } ); 133 }, 134 135 // Close modal on outside click. 136 outsideUntoggle: function() { 137 document.addEventListener( 'click', function( event ) { 138 var target = event.target; 139 var modal = document.querySelector( '.cover-modal.active' ); 140 141 // if target onclick is <a> with # within the href attribute 142 if ( event.target.tagName.toLowerCase() === 'a' && event.target.hash.includes( '#' ) && modal !== null ) { 143 // untoggle the modal 144 this.untoggleModal( modal );
145 // wait 550 and scroll to the anchor 146 setTimeout( function() { 147 var anchor = document.getElementById( event.target.hash.slice( 1 ) ); 148 anchor.scrollIntoView(); 149 }, 550 ); 150 } 151 152 if ( target === modal ) { 153 this.untoggleModal( target ); 154 } 155 }.bind( this ) ); 156 }, 157 158 // Close modal on escape key press. 159 closeOnEscape: function() { 160 document.addEventListener( 'keydown', function( event ) { 161 if ( event.keyCode === 27 ) { 162 event.preventDefault(); 163 document.querySelectorAll( '.cover-modal.active' ).forEach( function( element ) { 164 this.untoggleModal( element ); 165 }.bind( this ) ); 166 } 167 }.bind( this ) ); 168 }, 169 170 // Hide and show modals before and after their animations have played out. 171 hideAndShowModals: function() { 172 var _doc = document, 173 _win = window, 174 modals = _doc.querySelectorAll( '.cover-modal' ), 175 htmlStyle = _doc.documentElement.style, 176 adminBar = _doc.querySelector( '#wpadminbar' ); 177 178 function getAdminBarHeight( negativeValue ) { 179 var height, 180 currentScroll = _win.pageYOffset; 181 182 if ( adminBar ) { 183 height = currentScroll + adminBar.getBoundingClientRect().height; 184 185 return negativeValue ? -height : height; 186 } 187 188 return currentScroll === 0 ? 0 : -currentScroll; 189 } 190 191 function htmlStyles() { 192 var overflow = _win.innerHeight > _doc.documentElement.getBoundingClientRect().height; 193 194 return { 195 'overflow-y': overflow ? 'hidden' : 'scroll', 196 position: 'fixed', 197 width: '100%', 198 top: getAdminBarHeight( true ) + 'px', 199 left: 0 200 }; 201 } 202 203 // Show the modal. 204 modals.forEach( function( modal ) { 205 modal.addEventListener( 'toggle-target-before-inactive', function( event ) { 206 var styles = htmlStyles(), 207 offsetY = _win.pageYOffset, 208 paddingTop = ( Math.abs( getAdminBarHeight() ) - offsetY ) + 'px', 209 mQuery = _win.matchMedia( '(max-width: 600px)' ); 210 211 if ( event.target !== modal ) { 212 return; 213 } 214 215 Object.keys( styles ).forEach( function( styleKey ) { 216 htmlStyle.setProperty( styleKey, styles[ styleKey ] ); 217 } ); 218 219 _win.twentytwenty.scrolled = parseInt( styles.top, 10 ); 220 221 if ( adminBar ) { 222 _doc.body.style.setProperty( 'padding-top', paddingTop ); 223 224 if ( mQuery.matches ) { 225 if ( offsetY >= getAdminBarHeight() ) { 226 modal.style.setProperty( 'top', 0 ); 227 } else { 228 modal.style.setProperty( 'top', ( getAdminBarHeight() - offsetY ) + 'px' ); 229 } 230 } 231 } 232 233 modal.classList.add( 'show-modal' ); 234 } ); 235 236 // Hide the modal after a delay, so animations have time to play out. 237 modal.addEventListener( 'toggle-target-after-inactive', function( event ) { 238 if ( event.target !== modal ) { 239 return; 240 } 241 242 setTimeout( function() { 243 var clickedEl = twentytwenty.toggles.clickedEl; 244 245 modal.classList.remove( 'show-modal' ); 246 247 Object.keys( htmlStyles() ).forEach( function( styleKey ) { 248 htmlStyle.removeProperty( styleKey ); 249 } ); 250 251 if ( adminBar ) { 252 _doc.body.style.removeProperty( 'padding-top' ); 253 modal.style.removeProperty( 'top' ); 254 } 255 256 if ( clickedEl !== false ) { 257 clickedEl.focus(); 258 clickedEl = false;
259 } 260 261 _win.scrollTo( 0, Math.abs( _win.twentytwenty.scrolled + getAdminBarHeight() ) ); 262 263 _win.twentytwenty.scrolled = 0; 264 }, 500 ); 265 } ); 266 } ); 267 }, 268 269 // Untoggle a modal. 270 untoggleModal: function( modal ) { 271 var modalTargetClass, 272 modalToggle = false; 273 274 // If the modal has specified the string (ID or class) used by toggles to target it, untoggle the toggles with that target string. 275 // The modal-target-string must match the string toggles use to target the modal. 276 if ( modal.dataset.modalTargetString ) { 277 modalTargetClass = modal.dataset.modalTargetString; 278 279 modalToggle = document.querySelector( '*[data-toggle-target="' + modalTargetClass + '"]' ); 280 } 281 282 // If a modal toggle exists, trigger it so all of the toggle options are included. 283 if ( modalToggle ) { 284 modalToggle.click(); 285 286 // If one doesn't exist, just hide the modal. 287 } else { 288 modal.classList.remove( 'active' ); 289 } 290 } 291 292}; // twentytwenty.coverModals 293 294/* ----------------------------------------------------------------------------------------------- 295 Modal Menu 296--------------------------------------------------------------------------------------------------- */ 297twentytwenty.modalMenu = { 298 299 init: function() { 300 // If the current menu item is in a sub level, expand all the levels higher up on load. 301 this.expandLevel(); 302 this.keepFocusInModal(); 303 }, 304 305 expandLevel: function() { 306 var modalMenus = document.querySelectorAll( '.modal-menu' ); 307 308 modalMenus.forEach( function( modalMenu ) { 309 var activeMenuItem = modalMenu.querySelector( '.current-menu-item' ); 310 311 if ( activeMenuItem ) { 312 twentytwentyFindParents( activeMenuItem, 'li' ).forEach( function( element ) { 313 var subMenuToggle = element.querySelector( '.sub-menu-toggle' ); 314 if ( subMenuToggle ) { 315 twentytwenty.toggles.performToggle( subMenuToggle, true ); 316 } 317 } ); 318 } 319 } ); 320 }, 321 322 keepFocusInModal: function() { 323 var _doc = document; 324 325 _doc.addEventListener( 'keydown', function( event ) { 326 var toggleTarget, modal, selectors, elements, menuType, bottomMenu, activeEl, lastEl, firstEl, tabKey, shift
326Key, 327 clickedEl = twentytwenty.toggles.clickedEl; 328 329 if ( clickedEl && _doc.body.classList.contains( 'showing-modal' ) ) { 330 toggleTarget = clickedEl.dataset.toggleTarget; 331 selectors = 'input, a, button'; 332 modal = _doc.querySelector( toggleTarget ); 333 334 elements = modal.querySelectorAll( selectors ); 335 elements = Array.prototype.slice.call( elements ); 336 337 if ( '.menu-modal' === toggleTarget ) { 338 menuType = window.matchMedia( '(min-width: 1000px)' ).matches; 339 menuType = menuType ? '.expanded-menu' : '.mobile-menu'; 340 341 elements = elements.filter( function( element ) { 342 return null !== element.closest( menuType ) && null !== element.offsetParent; 343 } ); 344 345 elements.unshift( _doc.querySelector( '.close-nav-toggle' ) ); 346 347 bottomMenu = _doc.querySelector( '.menu-bottom > nav' ); 348 349 if ( bottomMenu ) { 350 bottomMenu.querySelectorAll( selectors ).forEach( function( element ) { 351 elements.push( element ); 352 } ); 353 } 354 } 355 356 lastEl = elements[ elements.length - 1 ]; 357 firstEl = elements[0]; 358 activeEl = _doc.activeElement; 359 tabKey = event.keyCode === 9; 360 shiftKey = event.shiftKey; 361 362 if ( ! shiftKey && tabKey && lastEl === activeEl ) { 363 event.preventDefault(); 364 firstEl.focus(); 365 } 366 367 if ( shiftKey && tabKey && firstEl === activeEl ) { 368 event.preventDefault(); 369 lastEl.focus(); 370 } 371 } 372 } ); 373 } 374}; // twentytwenty.modalMenu 375 376/* ----------------------------------------------------------------------------------------------- 377 Primary Menu 378--------------------------------------------------------------------------------------------------- */ 379 380twentytwenty.primaryMenu = { 381 382 init: function() { 383 this.focusMenuWithChildren(); 384 }, 385 386 // The focusMenuWithChildren() function implements Keyboard Navigation in the Primary Menu 387 // by adding the '.focus' class to all 'li.menu-item-has-children' when the focus is on the 'a' element. 388 focusMenuWithChildren: function() { 389 // Get all the link elements within the primary menu. 390 var links, i, len, 391 menu = document.querySelector( '.primary-menu-wrapper' ); 392 393 if ( ! menu ) { 394 return false; 395 } 396 397 links = menu.getElementsByTagName( 'a' ); 398 399 // Each time a menu link is focused or blurred, toggle focus. 400 for ( i = 0, len = links.length; i < len; i++ ) { 401 links[i].addEventListener( 'focus', toggleFocus, true ); 402 links[i].addEventListener( 'blur', toggleFocus, true ); 403 } 404 405 //Sets or removes the .focus class on an element. 406 function toggleFocus() { 407 var self = this; 408 409 // Move up through the ancestors of the current link until we hit .primary-menu. 410 while ( -1 === self.className.indexOf( 'primary-menu' ) ) { 411 // On li elements toggle the class .focus. 412 if ( 'li' === self.tagName.toLowerCase() ) { 413 if ( -1 !== self.className.indexOf( 'focus' ) ) { 414 self.className = self.className.replace( ' focus', '' ); 415 } else { 416 self.className += ' focus'; 417 } 418 } 419 self = self.parentElement; 420 } 421 } 422 } 423}; // twentytwenty.primaryMenu 424 425/* ----------------------------------------------------------------------------------------------- 426 Toggles 427--------------------------------------------------------------------------------------------------- */ 428 429twentytwenty.toggles = { 430 431 clickedEl: false, 432 433 init: function() { 434 // Do the toggle. 435 this.toggle(); 436 437 // Check for toggle/untoggle on resize. 438 this.resizeCheck(); 439 440 // Check for untoggle on escape key press. 441 this.untoggleOnEscapeKeyPress(); 442 }, 443 444 performToggle: function( element, instantly ) { 445 var target, timeOutTime, classToToggle, 446 self = this, 447 _doc = document, 448 // Get our targets. 449 toggle = element, 450 targetString = toggle.dataset.toggleTarget, 451 activeClass = 'active'; 452 453 // Elements to focus after modals are closed. 454 if ( ! _doc.querySelectorAll( '.show-modal' ).length ) { 455 self.clickedEl = _doc.activeElement; 456 } 457 458 if ( targetString === 'next' ) { 459 target = toggle.nextSibling; 460 } else { 461 target = _doc.querySelector( targetString ); 462 } 463 464 // Trigger events on the toggle targets before they are toggled. 465 if ( target.classList.contains( activeClass ) ) { 466 target.dispatchEvent( twentytwenty.createEvent( 'toggle-target-before-active' ) ); 467 } else { 468 target.dispatchEvent( twentytwenty.createEvent( 'toggle-target-before-inactive' ) ); 469 } 470 471 // Get the class to toggle, if specified. 472 classToToggle = toggle.dataset.classToToggle ? toggle.dataset.classToToggle : activeClass; 473 474 // For cover modals, set a short timeout duration so the class animations have time to play out. 475 timeOutTime = 0; 476 477 if ( target.classList.contains( 'cover-modal' ) ) { 478 timeOutTime = 10; 479 } 480 481 setTimeout( function() { 482 var focusElement, 483 subMenued = target.classList.contains( 'sub-menu' ), 484 newTarget = subMenued ? toggle.closest( '.menu-item' ).querySelector( '.sub-menu' ) : target, 485 duration = toggle.dataset.toggleDuration; 486 487 // Toggle the target of the clicked toggle. 488 if ( toggle.dataset.toggleType === 'slidetoggle' && ! instantly && duration !== '0' ) { 489 twentytwentyMenuToggle( newTarget, duration ); 490 } else { 491 newTarget.classList.toggle( classToToggle ); 492 } 493 494 // If the toggle target is 'next', only give the clicked toggle the active class. 495 if ( targetString === 'next' ) { 496 toggle.classList.toggle( activeClass ); 497 } else if ( target.classList.contains( 'sub-menu' ) ) { 498 toggle.classList.toggle( activeClass ); 499 } else { 500 // If not, toggle all toggles with this toggle target. 501 _doc.querySelector( '*[data-toggle-target="' + targetString + '"]' ).classList.toggle( activeClass ); 502 } 503 504 // Toggle aria-expanded on the toggle. 505 twentytwentyToggleAttribute( toggle, 'aria-expanded', 'true', 'false' ); 506 507 if ( self.clickedEl && -1 !== toggle.getAttribute( 'class' ).indexOf( 'close-' ) ) { 508 twentytwentyToggleAttribute( self.clickedEl, 'aria-expanded', 'true', 'false' ); 509 } 510 511 // Toggle body class. 512 if ( toggle.dataset.toggleBodyClass ) { 513 _doc.body.classList.toggle( toggle.dataset.toggleBodyClass ); 514 } 515 516 // Check whether to set focus. 517 if ( toggle.dataset.setFocus ) { 518 focusElement = _doc.querySelector( toggle.dataset.setFocus ); 519
520 if ( focusElement ) { 521 if ( target.classList.contains( activeClass ) ) { 522 focusElement.focus(); 523 } else { 524 focusElement.blur(); 525 } 526 } 527 } 528 529 // Trigger the toggled event on the toggle target. 530 target.dispatchEvent( twentytwenty.createEvent( 'toggled' ) ); 531 532 // Trigger events on the toggle targets after they are toggled. 533 if ( target.classList.contains( activeClass ) ) { 534 target.dispatchEvent( twentytwenty.createEvent( 'toggle-target-after-active' ) ); 535 } else { 536 target.dispatchEvent( twentytwenty.createEvent( 'toggle-target-after-inactive' ) ); 537 } 538 }, timeOutTime ); 539 }, 540 541 // Do the toggle. 542 toggle: function() { 543 var self = this; 544 545 document.querySelectorAll( '*[data-toggle-target]' ).forEach( function( element ) { 546 element.addEventListener( 'click', function( event ) { 547 event.preventDefault(); 548 self.performToggle( element ); 549 } ); 550 } ); 551 }, 552 553 // Check for toggle/untoggle on screen resize. 554 resizeCheck: function() { 555 if ( document.querySelectorAll( '*[data-untoggle-above], *[data-untoggle-below], *[data-toggle-above], *[data-toggle-below]' ).length ) { 556 window.addEventListener( 'resize', function() { 557 var winWidth = window.innerWidth, 558 toggles = document.querySelectorAll( '.toggle' ); 559 560 toggles.forEach( function( toggle ) { 561 var unToggleAbove = toggle.dataset.untoggleAbove, 562 unToggleBelow = toggle.dataset.untoggleBelow, 563 toggleAbove = toggle.dataset.toggleAbove, 564 toggleBelow = toggle.dataset.toggleBelow; 565 566 // If no width comparison is set, continue. 567 if ( ! unToggleAbove && ! unToggleBelow && ! toggleAbove && ! toggleBelow ) { 568 return; 569 } 570 571 // If the toggle width comparison is true, toggle the toggle. 572 if ( 573 ( ( ( unToggleAbove && winWidth > unToggleAbove ) || 574 ( unToggleBelow && winWidth < unToggleBelow ) ) && 575 toggle.classList.contains( 'active' ) ) || 576 ( ( ( toggleAbove && winWidth > toggleAbove ) || 577 ( toggleBelow && winWidth < toggleBelow ) ) && 578 ! toggle.classList.contains( 'active' ) ) 579 ) { 580 toggle.click(); 581 } 582 } ); 583 } ); 584 } 585 }, 586 587 // Close toggle on escape key press. 588 untoggleOnEscapeKeyPress: function() { 589 document.addEventListener( 'keyup', function( event ) { 590 if ( event.key === 'Escape' ) { 591 document.querySelectorAll( '*[data-untoggle-on-escape].active' ).forEach( function( element ) { 592 if ( element.classList.contains( 'active' ) ) { 593 element.click(); 594 } 595 } ); 596 } 597 } ); 598 } 599 600}; // twentytwenty.toggles 601 602/** 603 * Is the DOM ready? 604 * 605 * This implementation is coming from https://gomakethings.com/a-native-javascript-equivalent-of-jquerys-ready-method/ 606 * 607 * @param {Function} fn Callback function to run. 608 */ 609function twentytwentyDomReady( fn ) { 610 if ( typeof fn !== 'function' ) { 611 return; 612 } 613 614 if ( document.readyState === 'interactive' || document.readyState === 'complete' ) { 615 return fn(); 616 } 617 618 document.addEventListener( 'DOMContentLoaded', fn, false ); 619} 620 621twentytwentyDomReady( function() { 622 twentytwenty.toggles.init(); // Handle toggles. 623 twentytwenty.coverModals.init(); // Handle cover modals. 624 twentytwenty.intrinsicRatioVideos.init(); // Retain aspect ratio of videos on window resize. 625 twentytwenty.modalMenu.init(); // Modal Menu. 626 twentytwenty.primaryMenu.init(); // Primary Menu. 627 twentytwenty.touchEnabled.init(); // Add class to body if device is touch-enabled. 628} ); 629 630/* ----------------------------------------------------------------------------------------------- 631 Helper functions 632--------------------------------------------------------------------------------------------------- */ 633
634/* Toggle an attribute ----------------------- */ 635 636function twentytwentyToggleAttribute( element, attribute, trueVal, falseVal ) { 637 if ( trueVal === undefined ) { 638 trueVal = true; 639 } 640 if ( falseVal === undefined ) { 641 falseVal = false; 642 } 643 if ( element.getAttribute( attribute ) !== trueVal ) { 644 element.setAttribute( attribute, trueVal ); 645 } else { 646 element.setAttribute( attribute, falseVal ); 647 } 648} 649 650/** 651 * Toggle a menu item on or off. 652 * 653 * @param {HTMLElement} target 654 * @param {number} duration 655 */ 656function twentytwentyMenuToggle( target, duration ) { 657 var initialParentHeight, finalParentHeight, menu, menuItems, transitionListener, 658 initialPositions = [], 659 finalPositions = []; 660 661 if ( ! target ) { 662 return; 663 } 664 665 menu = target.closest( '.menu-wrapper' ); 666 667 // Step 1: look at the initial positions of every menu item. 668 menuItems = menu.querySelectorAll( '.menu-item' ); 669 670 menuItems.forEach( function( menuItem, index ) { 671 initialPositions[ index ] = { x: menuItem.offsetLeft, y: menuItem.offsetTop }; 672 } ); 673 initialParentHeight = target.parentElement.offsetHeight; 674 675 target.classList.add( 'toggling-target' ); 676 677 // Step 2: toggle target menu item and look at the final positions of every menu item. 678 target.classList.toggle( 'active' ); 679 680 menuItems.forEach( function( menuItem, index ) { 681 finalPositions[ index ] = { x: menuItem.offsetLeft, y: menuItem.offsetTop }; 682 } ); 683 finalParentHeight = target.parentElement.offsetHeight; 684 685 // Step 3: close target menu item again. 686 // The whole process happens without giving the browser a chance to render, so it's invisible. 687 target.classList.toggle( 'active' ); 688 689 /* 690 * Step 4: prepare animation. 691 * Position all the items with absolute offsets, at the same starting position. 692 * Shouldn't result in any visual changes if done right. 693 */ 694 menu.classList.add( 'is-toggling' ); 695 target.classList.toggle( 'active' ); 696 menuItems.forEach( function( menuItem, index ) { 697 var initialPosition = initialPositions[ index ]; 698 if ( initialPosition.y === 0 && menuItem.parentElement === target ) { 699 initialPosition.y = initialParentHeight; 700 } 701 menuItem.style.transform = 'translate(' + initialPosition.x + 'px, ' + initialPosition.y + 'px)'; 702 } ); 703 704 /* 705 * The double rAF is unfortunately needed, since we're toggling CSS classes, and 706 * the only way to ensure layout completion here across browsers is to wait twice. 707 * This just delays the start of the animation by 2 frames and is thus not an issue. 708 */ 709 requestAnimationFrame( function() { 710 requestAnimationFrame( function() { 711 /* 712 * Step 5: start animation by moving everything to final position. 713 * All the layout work has already happened, while we were preparing for the animation. 714 * The animation now runs entirely in CSS, using cheap CSS properties (opacity and transform) 715 * that don't trigger the layout or paint stages. 716 */ 717 menu.classList.add( 'is-animating' ); 718 menuItems.forEach( function( menuItem, index ) { 719 var finalPosition = finalPositions[ index ]; 720 if ( finalPosition.y === 0 && menuItem.parentElement === target ) { 721 finalPosition.y = finalParentHeight; 722 } 723 if ( duration !== undefined ) { 724 menuItem.style.transitionDuration = duration + 'ms'; 725 } 726 menuItem.style.transform = 'translate(' + finalPosition.x + 'px, ' + finalPosition.y + 'px)'; 727 } ); 728 if ( duration !== undefined ) { 729 target.style.transitionDuration = duration + 'ms'; 730 } 731 } ); 732 733 // Step 6: finish toggling. 734 // Remove all transient classes when the animation ends. 735 transitionListener = function() { 736 menu.classList.remove( 'is-animating' ); 737 menu.classList.remove( 'is-toggling' ); 738 target.classList.remove( 'toggling-target' );
739 menuItems.forEach( function( menuItem ) { 740 menuItem.style.transform = ''; 741 menuItem.style.transitionDuration = ''; 742 } ); 743 target.style.transitionDuration = ''; 744 target.removeEventListener( 'transitionend', transitionListener ); 745 }; 746 747 target.addEventListener( 'transitionend', transitionListener ); 748 } ); 749} 750 751/** 752 * Traverses the DOM up to find elements matching the query. 753 * 754 * @param {HTMLElement} target 755 * @param {string} query 756 * @return {NodeList} parents matching query 757 */ 758function twentytwentyFindParents( target, query ) { 759 var parents = []; 760 761 // Recursively go up the DOM adding matches to the parents array. 762 function traverse( item ) { 763 var parent = item.parentNode; 764 if ( parent instanceof HTMLElement ) { 765 if ( parent.matches( query ) ) { 766 parents.push( parent ); 767 } 768 traverse( parent ); 769 } 770 } 771 772 traverse( target ); 773 774 return parents; 775}
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