JAVASCRIPT
// https://gijsroge.github.io/priority-nav.js/
/*
* priority-nav - v1.0.11 | (c) 2016 @gijsroge | MIT license
* Repository: https://github.com/gijsroge/priority-navigation.git
* Description: Priority+ pattern navigation that hides menu items if they don't fit on screen.
* Demo: http://gijsroge.github.io/priority-nav.js/
*/
!function(a,b){"function"==typeof define&&define.amd?define("priorityNav",b(a)):"object"==typeof exports?module.exports=b(a):a.priorityNav=b(a)}(window||this,function(a){"use strict";function b(a,b,c){var d;return function(){var e=this,f=arguments,g=function(){d=null,c||a.apply(e,f)},h=c&&!d;clearTimeout(d),d=setTimeout(g,b),h&&a.apply(e,f)}}var c,d,e,f,g,h,i,j,k,l={},m=[],n=!!document.querySelector&&!!a.addEventListener,o={},p=0,q=0,r=0,s={initClass:"js-priorityNav",mainNavWrapper:"nav",mainNav:"ul",navDropdownClassName:"nav__dropdown",navDropdownToggleClassName:"nav__dropdown-toggle",navDropdownLabel:"more",navDropdownBreakpointLabel:"menu",breakPoint:500,throttleDelay:50,offsetPixels:0,count:!0,moved:function(){},movedBack:function(){}},t=function(a,b,c){if("[object Object]"===Object.prototype.toString.call(a))for(var d in a)Object.prototype.hasOwnProperty.call(a,d)&&b.call(c,a[d],d,a);else for(var e=0,f=a.length;f>e;e++)b.call(c,a[e],e,a)},u=function(a,b){for(var c=b.charAt(0);a&&a!==document;a=a.parentNode)if("."===c){if(a.classList.contains(b.substr(1)))return a}else if("#"===c){if(a.id===b.substr(1))return a}else if("["===c&&a.hasAttribute(b.substr(1,b.length-2)))return a;return!1},v=function(a,b){var c={};return t(a,function(b,d){c[d]=a[d]}),t(b,function(a,d){c[d]=b[d]}),c},w=function(a,b){if(a.classList)a.classList.toggle(b);else{var c=a.className.split(" "),d=c.indexOf(b);d>=0?c.splice(d,1):c.push(b),a.className=c.join(" ")}},x=function(a,b){return k=document.createElement("span"),h=document.createElement("ul"),i=document.createElement("button"),i.innerHTML=b.navDropdownLabel,i.setAttribute("aria-controls","menu"),h.setAttribute("aria-hidden","true"),a.querySelector(g).parentNode!==a?void console.warn("mainNav is not a direct child of mainNavWrapper, double check please"):(a.insertAfter(k,a.querySelector(g)),k.appendChild(i),k.appendChild(h),h.classList.add(b.navDropdownClassName),h.classList.add("priority-nav__dropdown"),i.classList.add(b.navDropdownToggleClassName),i.classList.add("priority-nav__dropdown-toggle"),k.classList.add(b.navDropdownClassName+"-wrapper"),k.classList.add("priority-nav__wrapper"),void a.classList.add("priority-nav"))},y=function(a){var b=window.getComputedStyle(a),c=parseFloat(b.paddingLeft)+parseFloat(b.paddingRight);return a.clientWidth-c},z=function(){var a=document,b=window,c=a.compatMode&&"CSS1Compat"===a.compatMode?a.documentElement:a.body,d=c.clientWidth,e=c.clientHeight;return b.innerWidth&&d>b.innerWidth&&(d=b.innerWidth,e=b.innerHeight),{width:d,height:e}},A=function(a){e=y(a),j=a.querySelector(h).parentNode===a?a.querySelector(h).offsetWidth:0,f=E(a)+o.offsetPixels,r=z().width};l.doesItFit=function(a){o=v(s,c||{});var d=0===a.getAttribute("instance")?d:o.throttleDelay;p++,b(function(){var b=a.getAttribute("instance");for(A(a);f>=e&&a.querySelector(g).children.length>0||r<o.breakPoint&&a.querySelector(g).children.length>0;)l.toDropdown(a,b),A(a,b),r<o.breakPoint&&D(a,b,o.navDropdownBreakpointLabel);for(;e>=m[b][m[b].length-1]&&r>o.breakPoint;)l.toMenu(a,b),r>o.breakPoint&&D(a,b,o.navDropdownLabel);m[b].length<1&&(a.querySelector(h).classList.remove("show"),D(a,b,o.navDropdownLabel)),a.querySelector(g).children.length<1?(a.classList.add("is-empty"),D(a,b,o.navDropdownBreakpointLabel)):a.classList.remove("is-empty"),B(a,b)},d)()};var B=function(a,b){m[b].length<1?(a.querySelector(i).classList.add("priority-nav-is-hidden"),a.querySelector(i).classList.remove("priority-nav-is-visible"),a.classList.remove("priority-nav-has-dropdown"),a.querySelector(".priority-nav__wrapper").setAttribute("aria-haspopup","false")):(a.querySelector(i).classList.add("priority-nav-is-visible"),a.querySelector(i).classList.remove("priority-nav-is-hidden"),a.classList.add("priority-nav-has-dropdown"),a.querySelector(".priority-nav__wrapper").setAttribute("aria-haspopup","true"))},C=function(a,b){a.querySelector(i).setAttribute("priorityNav-count",m[b].length)},D=function(a,b,c){a.querySelector(i).innerHTML=c};l.toDropdown=function(a,b){a.querySelector(h).firstChild&&a.querySelector(g).children.length>0?a.querySelector(h).insertBefore(a.querySelector(g).lastElementChild,a.querySelector(h).firstChild):a.querySelector(g).children.length>0&&a.querySelector(h).appendChild(a.querySelector(g).lastElementChild),m[b].push(f),B(a,b),a.querySelector(g).children.length>0&&o.count&&C(a,b),o.moved()},l.toMenu=function(a,b){a.querySelector(h).children.length>0&&a.querySelector(g).appendChild(a.querySelector(h).firstElementChild),m[b].pop(),B(a,b),a.querySelector(g).children.length>0&&o.count&&C(a,b),o.movedBack()};var E=function(a){for(var b=a.childNodes,c=0,d=0;d<b.length;d++)3!==b[d].nodeType&&(isNaN(b[d].offsetWidth)||(c+=b[d].offsetWidth));return c},F=function(a,b){window.attachEvent?window.attachEvent("onresize",function(){l.doesItFit&&l.doesItFit(a)}):window.addEventListener&&window.addEventListener("resize",function(){l.doesItFit&&l.doesItFit(a)},!0),a.querySelector(i).addEventListener("click",function(){w(a.querySelector(h),"show"),w(this,"is-open"),w(a,"is-open"),-1!==a.className.indexOf("is-open")?a.querySelector(h).setAttribute("aria-hidden","false"):(a.querySelector(h).setAttribute("aria-hidden","true"),a.querySelector(h).blur())}),document.addEventListener("click",function(c){u(c.target,"."+b.navDropdownClassName)||c.target===a.querySelector(i)||(a.querySelector(h).classList.remove("show"),a.querySelector(i).classList.remove("is-open"),a.classList.remove("is-open"))}),document.onkeydown=function(a){a=a||window.event,27===a.keyCode&&(h.classList.remove("show"),i.classList.remove("is-open"),d.classList.remove("is-open"))}};Element.prototype.remove=function(){this.parentElement.removeChild(this)},NodeList.prototype.remove=HTMLCollection.prototype.remove=function(){for(var a=0,b=this.length;b>a;a++)this[a]&&this[a].parentElement&&this[a].parentElement.removeChild(this[a])},l.destroy=function(){o&&(document.documentElement.classList.remove(o.initClass),k.remove(),o=null,delete l.init,delete l.doesItFit)},n&&"undefined"!=typeof Node&&(Node.prototype.insertAfter=function(a,b){this.insertBefore(a,b.nextSibling)});var G=function(a){var b=a.charAt(0);return"."===b||"#"===b?!1:!0};return l.init=function(a){if(o=v(s,a||{}),!n&&"undefined"==typeof Node)return void console.warn("This browser doesn't support priorityNav");if(!G(o.navDropdownClassName)||!G(o.navDropdownToggleClassName))return void console.warn("No symbols allowed in navDropdownClassName & navDropdownToggleClassName. These are not selectors.");var b=document.querySelectorAll(o.mainNavWrapper);t(b,function(a){return m[q]=[],a.setAttribute("instance",q++),(d=a)?(g=o.mainNav,a.querySelector(g)?(x(a,o),h="."+o.navDropdownClassName,a.querySelector(h)?(i="."+o.navDropdownToggleClassName,a.querySelector(i)?(F(a,o),void l.doesItFit(a)):void console.warn("couldn't find the specified navDropdownToggle element")):void console.warn("couldn't find the specified navDropdown element")):void console.warn("couldn't find the specified mainNav element")):void console.warn("couldn't find the specified mainNavWrapper element")}),p++,document.documentElement.classList.add(o.initClass)},l});
var nav = priorityNav.init();
