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/*! matchMedia() polyfill - Test a CSS media type/query in JS. Authors & copyright (c) 2012: Scott Jehl, Paul Irish, Nicholas Zakas. Dual MIT/BSD license */
/*! NOTE: If you're already including a window.matchMedia polyfill via Modernizr or otherwise, you don't need this part */
(function (w) {
'use strict';
w.matchMedia = w.matchMedia || function (doc, undefined) {
var bool, docElem = doc.documentElement, refNode = docElem.firstElementChild || docElem.firstChild,
fakeBody = doc.createElement('body'), div = doc.createElement('div');
div.id = 'mq-test-1';
div.style.cssText = 'position:absolute;top:-100em';
fakeBody.style.background = 'none';
fakeBody.appendChild(div);
return function (q) {
div.innerHTML = '';
docElem.insertBefore(fakeBody, refNode);
bool = div.offsetWidth === 42;
docElem.removeChild(fakeBody);
return {
matches: bool,
media: q
};
};
}(w.document);
})(this);
/*! Respond.js v1.4.0: min/max-width media query polyfill. (c) Scott Jehl. MIT Lic. j.mp/respondjs */
(function (w) {
'use strict';
var respond = {};
w.respond = respond;
respond.update = function () {
};
var requestQueue = [], xmlHttp = function () {
var xmlhttpmethod = false;
try {
xmlhttpmethod = new w.XMLHttpRequest();
} catch (e) {
xmlhttpmethod = new w.ActiveXObject('Microsoft.XMLHTTP');
}
return function () {
return xmlhttpmethod;
};
}(), ajax = function (url, callback) {
var req = xmlHttp();
if (!req) {
return;
}
req.open('GET', url, true);
req.onreadystatechange = function () {
if (req.readyState !== 4 || req.status !== 200 && req.status !== 304) {
return;
}
callback(req.responseText);
};
if (req.readyState === 4) {
return;
}
req.send(null);
};
respond.ajax = ajax;
respond.queue = requestQueue;
respond.regex = {
media: /@media[^\{]+\{([^\{\}]*\{[^\}\{]*\})+/gi,
keyframes: /@(?:\-(?:o|moz|webkit)\-)?keyframes[^\{]+\{(?:[^\{\}]*\{[^\}\{]*\})+[^\}]*\}/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: /\([\s]*max\-width\s*:[\s]*([\s]*[0-9\.]+)(px|em)[\s]*\)/
};
respond.mediaQueriesSupported = w.matchMedia && w.matchMedia('only all') !== null && w.matchMedia('only all').matches;
if (respond.mediaQueriesSupported) {
return;
}
var doc = w.document, docElem = doc.documentElement, mediastyles = [], rules = [], appendedEls = [],
parsedSheets = {}, resizeThrottle = 30, head = doc.getElementsByTagName('head')[0] || docElem,
base = doc.getElementsByTagName('base')[0], links = head.getElementsByTagName('link'), lastCall, resizeDefer,
eminpx, getEmValue = function () {
var ret, div = doc.createElement('div'), body = doc.body, originalHTMLFontSize = docElem.style.fontSize,
originalBodyFontSize = body && body.style.fontSize, fakeUsed = false;
div.style.cssText = 'position:absolute;font-size:1em;width:1em';
if (!body) {
body = fakeUsed = doc.createElement('body');
body.style.background = 'none';
}
docElem.style.fontSize = '100%';
body.style.fontSize = '100%';
body.appendChild(div);
if (fakeUsed) {
docElem.insertBefore(body, docElem.firstChild);
}
ret = div.offsetWidth;
if (fakeUsed) {
docElem.removeChild(body);
} else {
body.removeChild(div);
}
docElem.style.fontSize = originalHTMLFontSize;
if (originalBodyFontSize) {
body.style.fontSize = originalBodyFontSize;
}
ret = eminpx = parseFloat(ret);
return ret;
}, applyMedia = function (fromResize) {
var name = 'clientWidth', docElemProp = docElem[name],
currWidth = doc.compatMode === 'CSS1Compat' && docElemProp || doc.body[name] || docElemProp,
styleBlocks = {}, lastLink = links[links.length - 1], now = new Date().getTime();
if (fromResize && lastCall && now - lastCall < resizeThrottle) {
w.clearTimeout(resizeDefer);
resizeDefer = w.setTimeout(applyMedia, resizeThrottle);
return;
} else {
lastCall = now;
}
for (var i in mediastyles) {
if (mediastyles.hasOwnProperty(i)) {
var thisstyle = mediastyles[i], min = thisstyle.minw, max = thisstyle.maxw, minnull = min === null,
maxnull = max === null, em = 'em';
if (!!min) {
min = parseFloat(min) * (min.indexOf(em) > -1 ? eminpx || getEmValue() : 1);
}
if (!!max) {
max = parseFloat(max) * (max.indexOf(em) > -1 ? eminpx || getEmValue() : 1);
}
if (!thisstyle.hasquery || (!minnull || !maxnull) && (minnull || currWidth >= min) && (maxnull || currWidth <= max)) {
if (!styleBlocks[thisstyle.media]) {
styleBlocks[thisstyle.media] = [];
}
styleBlocks[thisstyle.media].push(rules[thisstyle.rules]);
}
}
}
for (var j in appendedEls) {
if (appendedEls.hasOwnProperty(j)) {
if (appendedEls[j] && appendedEls[j].parentNode === head) {
head.removeChild(appendedEls[j]);
}
}
}
appendedEls.length = 0;
for (var k in styleBlocks) {
if (styleBlocks.hasOwnProperty(k)) {
var ss = doc.createElement('style'), css = styleBlocks[k].join('\n');
ss.type = 'text/css';
ss.media = k;
head.insertBefore(ss, lastLink.nextSibling);
if (ss.styleSheet) {
ss.styleSheet.cssText = css;
} else {
ss.appendChild(doc.createTextNode(css));
}
appendedEls.push(ss);
}
}
}, translate = function (styles, href, media) {
var qs = styles.replace(respond.regex.keyframes, '').match(respond.regex.media), ql = qs && qs.length || 0;
href = href.substring(0, href.lastIndexOf('/'));
var repUrls = function (css) {
return css.replace(respond.regex.urls, '$1' + href + '$2$3');
}, useMedia = !ql && media;
if (href.length) {
href += '/';
}
if (useMedia) {
ql = 1;
}
for (var i = 0; i < ql; i++) {
var fullq, thisq, eachq, eql;
if (useMedia) {
fullq = media;
rules.push(repUrls(styles));
} else {
fullq = qs[i].match(respond.regex.findStyles) && RegExp.$1;
rules.push(RegExp.$2 && repUrls(RegExp.$2));
}
eachq = fullq.split(',');
eql = eachq.length;
for (var j = 0; j < eql; j++) {
thisq = eachq[j];
mediastyles.push({
media: thisq.split('(')[0].match(respond.regex.only) && RegExp.$2 || 'all',
rules: rules.length - 1,
hasquery: thisq.indexOf('(') > -1,
minw: thisq.match(respond.regex.minw) && parseFloat(RegExp.$1) + (RegExp.$2 || ''),
maxw: thisq.match(respond.regex.maxw) && parseFloat(RegExp.$1) + (RegExp.$2 || '')
});
}
}
applyMedia();
}, makeRequests = function () {
if (requestQueue.length) {
var thisRequest = requestQueue.shift();
ajax(thisRequest.href, function (styles) {
translate(styles, thisRequest.href, thisRequest.media);
parsedSheets[thisRequest.href] = true;
w.setTimeout(function () {
makeRequests();
}, 0);
});
}
}, ripCSS = function () {
for (var i = 0; i < links.length; i++) {
var sheet = links[i], href = sheet.href, media = sheet.media,
isCSS = sheet.rel && sheet.rel.toLowerCase() === 'stylesheet';
if (!!href && isCSS && !parsedSheets[href]) {
if (sheet.styleSheet && sheet.styleSheet.rawCssText) {
translate(sheet.styleSheet.rawCssText, href, media);
parsedSheets[href] = true;
} else {
if (!/^([a-zA-Z:]*\/\/)/.test(href) && !base || href.replace(RegExp.$1, '').split('/')[0] === w.location.host) {
if (href.substring(0, 2) === '//') {
href = w.location.protocol + href;
}
requestQueue.push({
href: href,
media: media
});
}
}
}
}
makeRequests();
};
ripCSS();
respond.update = ripCSS;
respond.getEmValue = getEmValue;
function callMedia() {
applyMedia(true);
}
if (w.addEventListener) {
w.addEventListener('resize', callMedia, false);
} else if (w.attachEvent) {
w.attachEvent('onresize', callMedia);
}
})(this);© 2015 - 2025 Weber Informatics LLC | Privacy Policy