mirror of
https://github.com/paboyle/Grid.git
synced 2025-06-16 14:57:05 +01:00
Adding full Jekyll site
This commit is contained in:
Guido Cossu
353
js/respond.js
Normal file
353
js/respond.js
Normal file
@ -0,0 +1,353 @@
|
||||
/* Respond.js: min/max-width media query polyfill. (c) Scott Jehl. MIT Lic. j.mp/respondjs */
|
||||
(function( w ){
|
||||
|
||||
"use strict";
|
||||
|
||||
//exposed namespace
|
||||
var respond = {};
|
||||
w.respond = respond;
|
||||
|
||||
//define update even in native-mq-supporting browsers, to avoid errors
|
||||
respond.update = function(){};
|
||||
|
||||
//define ajax obj
|
||||
var requestQueue = [],
|
||||
xmlHttp = (function() {
|
||||
var xmlhttpmethod = false;
|
||||
try {
|
||||
xmlhttpmethod = new w.XMLHttpRequest();
|
||||
}
|
||||
catch( e ){
|
||||
xmlhttpmethod = new w.ActiveXObject( "Microsoft.XMLHTTP" );
|
||||
}
|
||||
return function(){
|
||||
return xmlhttpmethod;
|
||||
};
|
||||
})(),
|
||||
|
||||
//tweaked Ajax functions from Quirksmode
|
||||
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 );
|
||||
},
|
||||
isUnsupportedMediaQuery = function( query ) {
|
||||
return query.replace( respond.regex.minmaxwh, '' ).match( respond.regex.other );
|
||||
};
|
||||
|
||||
//expose for testing
|
||||
respond.ajax = ajax;
|
||||
respond.queue = requestQueue;
|
||||
respond.unsupportedmq = isUnsupportedMediaQuery;
|
||||
respond.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
|
||||
};
|
||||
|
||||
//expose media query support flag for external use
|
||||
respond.mediaQueriesSupported = w.matchMedia && w.matchMedia( "only all" ) !== null && w.matchMedia( "only all" ).matches;
|
||||
|
||||
//if media queries are supported, exit here
|
||||
if( respond.mediaQueriesSupported ){
|
||||
return;
|
||||
}
|
||||
|
||||
//define vars
|
||||
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,
|
||||
|
||||
//cached container for 1em value, populated the first time it's needed
|
||||
eminpx,
|
||||
|
||||
// returns the value of 1em in pixels
|
||||
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";
|
||||
}
|
||||
|
||||
// 1em in a media query is the value of the default font size of the browser
|
||||
// reset docElem and body to ensure the correct value is returned
|
||||
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 );
|
||||
}
|
||||
|
||||
// restore the original values
|
||||
docElem.style.fontSize = originalHTMLFontSize;
|
||||
if( originalBodyFontSize ) {
|
||||
body.style.fontSize = originalBodyFontSize;
|
||||
}
|
||||
|
||||
|
||||
//also update eminpx before returning
|
||||
ret = eminpx = parseFloat(ret);
|
||||
|
||||
return ret;
|
||||
},
|
||||
|
||||
//enable/disable styles
|
||||
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();
|
||||
|
||||
//throttle resize calls
|
||||
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 there's no media query at all (the () part), or min or max is not null, and if either is present, they're true
|
||||
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 ] );
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//remove any existing respond style element(s)
|
||||
for( var j in appendedEls ){
|
||||
if( appendedEls.hasOwnProperty( j ) ){
|
||||
if( appendedEls[ j ] && appendedEls[ j ].parentNode === head ){
|
||||
head.removeChild( appendedEls[ j ] );
|
||||
}
|
||||
}
|
||||
}
|
||||
appendedEls.length = 0;
|
||||
|
||||
//inject active styles, grouped by media type
|
||||
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;
|
||||
|
||||
//originally, ss was appended to a documentFragment and sheets were appended in bulk.
|
||||
//this caused crashes in IE in a number of circumstances, such as when the HTML element had a bg image set, so appending beforehand seems best. Thanks to @dvelyk for the initial research on this one!
|
||||
head.insertBefore( ss, lastLink.nextSibling );
|
||||
|
||||
if ( ss.styleSheet ){
|
||||
ss.styleSheet.cssText = css;
|
||||
}
|
||||
else {
|
||||
ss.appendChild( doc.createTextNode( css ) );
|
||||
}
|
||||
|
||||
//push to appendedEls to track for later removal
|
||||
appendedEls.push( ss );
|
||||
}
|
||||
}
|
||||
},
|
||||
//find media blocks in css text, convert to style blocks
|
||||
translate = function( styles, href, media ){
|
||||
var qs = styles.replace( respond.regex.comments, '' )
|
||||
.replace( respond.regex.keyframes, '' )
|
||||
.match( respond.regex.media ),
|
||||
ql = qs && qs.length || 0;
|
||||
|
||||
//try to get CSS path
|
||||
href = href.substring( 0, href.lastIndexOf( "/" ) );
|
||||
|
||||
var repUrls = function( css ){
|
||||
return css.replace( respond.regex.urls, "$1" + href + "$2$3" );
|
||||
},
|
||||
useMedia = !ql && media;
|
||||
|
||||
//if path exists, tack on trailing slash
|
||||
if( href.length ){ href += "/"; }
|
||||
|
||||
//if no internal queries exist, but media attr does, use that
|
||||
//note: this currently lacks support for situations where a media attr is specified on a link AND
|
||||
//its associated stylesheet has internal CSS media queries.
|
||||
//In those cases, the media attribute will currently be ignored.
|
||||
if( useMedia ){
|
||||
ql = 1;
|
||||
}
|
||||
|
||||
for( var i = 0; i < ql; i++ ){
|
||||
var fullq, thisq, eachq, eql;
|
||||
|
||||
//media attr
|
||||
if( useMedia ){
|
||||
fullq = media;
|
||||
rules.push( repUrls( styles ) );
|
||||
}
|
||||
//parse for 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 ];
|
||||
|
||||
if( isUnsupportedMediaQuery( thisq ) ) {
|
||||
continue;
|
||||
}
|
||||
|
||||
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();
|
||||
},
|
||||
|
||||
//recurse through request queue, get css text
|
||||
makeRequests = function(){
|
||||
if( requestQueue.length ){
|
||||
var thisRequest = requestQueue.shift();
|
||||
|
||||
ajax( thisRequest.href, function( styles ){
|
||||
translate( styles, thisRequest.href, thisRequest.media );
|
||||
parsedSheets[ thisRequest.href ] = true;
|
||||
|
||||
// by wrapping recursive function call in setTimeout
|
||||
// we prevent "Stack overflow" error in IE7
|
||||
w.setTimeout(function(){ makeRequests(); },0);
|
||||
} );
|
||||
}
|
||||
},
|
||||
|
||||
//loop stylesheets, send text content to translate
|
||||
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";
|
||||
|
||||
//only links plz and prevent re-parsing
|
||||
if( !!href && isCSS && !parsedSheets[ href ] ){
|
||||
// selectivizr exposes css through the rawCssText expando
|
||||
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 ){
|
||||
// IE7 doesn't handle urls that start with '//' for ajax request
|
||||
// manually add in the protocol
|
||||
if ( href.substring(0,2) === "//" ) { href = w.location.protocol + href; }
|
||||
requestQueue.push( {
|
||||
href: href,
|
||||
media: media
|
||||
} );
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
makeRequests();
|
||||
};
|
||||
|
||||
//translate CSS
|
||||
ripCSS();
|
||||
|
||||
//expose update for re-running respond later on
|
||||
respond.update = ripCSS;
|
||||
|
||||
//expose getEmValue
|
||||
respond.getEmValue = getEmValue;
|
||||
|
||||
//adjust on resize
|
||||
function callMedia(){
|
||||
applyMedia( true );
|
||||
}
|
||||
|
||||
if( w.addEventListener ){
|
||||
w.addEventListener( "resize", callMedia, false );
|
||||
}
|
||||
else if( w.attachEvent ){
|
||||
w.attachEvent( "onresize", callMedia );
|
||||
}
|
||||
})(this);
|
||||
Reference in New Issue
Block a user