welsonjs/app/assets/js/respond-1.4.2.edited.js

var FILE = require('lib/file');

/*! 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 = '&shy;<style media="' + q + '"> #mq-test-1 { width: 42px; }</style>';
            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 pos = url.indexOf('://');
            var scheme = (pos < 0) ? "" : url.substring(0, pos);

            switch (scheme) {
                case "http":
                case "https":
                    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);
                    break;

                default:
                    responseText = FILE.readFile(url, "utf-8");
                    callback(responseText);
            }
        };
    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);