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6 lines
No EOL
4.5 KiB
JavaScript
6 lines
No EOL
4.5 KiB
JavaScript
/*! Respond.js v1.4.2: min/max-width media query polyfill
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* Copyright 2014 Scott Jehl
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* Licensed under MIT
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* http://j.mp/respondjs */
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!function(a){"use strict";a.matchMedia=a.matchMedia||function(a){var b,c=a.documentElement,d=c.firstElementChild||c.firstChild,e=a.createElement("body"),f=a.createElement("div");return f.id="mq-test-1",f.style.cssText="position:absolute;top:-100em",e.style.background="none",e.appendChild(f),function(a){return f.innerHTML='­<style media="'+a+'"> #mq-test-1 { width: 42px; }</style>',c.insertBefore(e,d),b=42===f.offsetWidth,c.removeChild(e),{matches:b,media:a}}}(a.document)}(this),function(a){"use strict";function b(){v(!0)}var c={};a.respond=c,c.update=function(){};var d=[],e=function(){var b=!1;try{b=new a.XMLHttpRequest}catch(c){b=new a.ActiveXObject("Microsoft.XMLHTTP")}return function(){return b}}(),f=function(a,b){var c=e();c&&(c.open("GET",a,!0),c.onreadystatechange=function(){4!==c.readyState||200!==c.status&&304!==c.status||b(c.responseText)},4!==c.readyState&&c.send(null))},g=function(a){return a.replace(c.regex.minmaxwh,"").match(c.regex.other)};if(c.ajax=f,c.queue=d,c.unsupportedmq=g,c.regex={media:/@media[^\{]+\{([^\{\}]*\{[^\}\{]*\})+/gi,keyframes:/@(?:\-(?:o|moz|webkit)\-)?keyframes[^\{]+\{(?:[^\{\}]*\{[^\}\{]*\})+[^\}]*\}/gi,comments:/\/\*[^*]*\*+([^/][^*]*\*+)*\//gi,urls:/(url\()['"]?([^\/\)'"][^:\)'"]+)['"]?(\))/g,findStyles:/@media *([^\{]+)\{([\S\s]+?)$/,only:/(only\s+)?([a-zA-Z]+)\s?/,minw:/\(\s*min\-width\s*:\s*(\s*[0-9\.]+)(px|em)\s*\)/,maxw:/\(\s*max\-width\s*:\s*(\s*[0-9\.]+)(px|em)\s*\)/,minmaxwh:/\(\s*m(in|ax)\-(height|width)\s*:\s*(\s*[0-9\.]+)(px|em)\s*\)/gi,other:/\([^\)]*\)/g},c.mediaQueriesSupported=a.matchMedia&&null!==a.matchMedia("only all")&&a.matchMedia("only all").matches,!c.mediaQueriesSupported){var h,i,j,k=a.document,l=k.documentElement,m=[],n=[],o=[],p={},q=30,r=k.getElementsByTagName("head")[0]||l,s=k.getElementsByTagName("base")[0],t=r.getElementsByTagName("link"),u=function(){var a,b=k.createElement("div"),c=k.body,d=l.style.fontSize,e=c&&c.style.fontSize,f=!1;return b.style.cssText="position:absolute;font-size:1em;width:1em",c||(c=f=k.createElement("body"),c.style.background="none"),l.style.fontSize="100%",c.style.fontSize="100%",c.appendChild(b),f&&l.insertBefore(c,l.firstChild),a=b.offsetWidth,f?l.removeChild(c):c.removeChild(b),l.style.fontSize=d,e&&(c.style.fontSize=e),a=j=parseFloat(a)},v=function(b){var c="clientWidth",d=l[c],e="CSS1Compat"===k.compatMode&&d||k.body[c]||d,f={},g=t[t.length-1],p=(new Date).getTime();if(b&&h&&q>p-h)return a.clearTimeout(i),i=a.setTimeout(v,q),void 0;h=p;for(var s in m)if(m.hasOwnProperty(s)){var w=m[s],x=w.minw,y=w.maxw,z=null===x,A=null===y,B="em";x&&(x=parseFloat(x)*(x.indexOf(B)>-1?j||u():1)),y&&(y=parseFloat(y)*(y.indexOf(B)>-1?j||u():1)),w.hasquery&&(z&&A||!(z||e>=x)||!(A||y>=e))||(f[w.media]||(f[w.media]=[]),f[w.media].push(n[w.rules]))}for(var C in o)o.hasOwnProperty(C)&&o[C]&&o[C].parentNode===r&&r.removeChild(o[C]);o.length=0;for(var D in f)if(f.hasOwnProperty(D)){var E=k.createElement("style"),F=f[D].join("\n");E.type="text/css",E.media=D,r.insertBefore(E,g.nextSibling),E.styleSheet?E.styleSheet.cssText=F:E.appendChild(k.createTextNode(F)),o.push(E)}},w=function(a,b,d){var e=a.replace(c.regex.comments,"").replace(c.regex.keyframes,"").match(c.regex.media),f=e&&e.length||0;b=b.substring(0,b.lastIndexOf("/"));var h=function(a){return a.replace(c.regex.urls,"$1"+b+"$2$3")},i=!f&&d;b.length&&(b+="/"),i&&(f=1);for(var j=0;f>j;j++){var k,l,o,p;i?(k=d,n.push(h(a))):(k=e[j].match(c.regex.findStyles)&&RegExp.$1,n.push(RegExp.$2&&h(RegExp.$2))),o=k.split(","),p=o.length;for(var q=0;p>q;q++)l=o[q],g(l)||m.push({media:l.split("(")[0].match(c.regex.only)&&RegExp.$2||"all",rules:n.length-1,hasquery:l.indexOf("(")>-1,minw:l.match(c.regex.minw)&&parseFloat(RegExp.$1)+(RegExp.$2||""),maxw:l.match(c.regex.maxw)&&parseFloat(RegExp.$1)+(RegExp.$2||"")})}v()},x=function(){if(d.length){var b=d.shift();f(b.href,function(c){w(c,b.href,b.media),p[b.href]=!0,a.setTimeout(function(){x()},0)})}},y=function(){for(var b=0;b<t.length;b++){var c=t[b],e=c.href,f=c.media,g=c.rel&&"stylesheet"===c.rel.toLowerCase();e&&g&&!p[e]&&(c.styleSheet&&c.styleSheet.rawCssText?(w(c.styleSheet.rawCssText,e,f),p[e]=!0):(!/^([a-zA-Z:]*\/\/)/.test(e)&&!s||e.replace(RegExp.$1,"").split("/")[0]===a.location.host)&&("//"===e.substring(0,2)&&(e=a.location.protocol+e),d.push({href:e,media:f})))}x()};y(),c.update=y,c.getEmValue=u,a.addEventListener?a.addEventListener("resize",b,!1):a.attachEvent&&a.attachEvent("onresize",b)}}(this); |