vendor/assets/javascripts/respond.js in twbs_less_rails-2.5.1 vs vendor/assets/javascripts/respond.js in twbs_less_rails-2.6.0
- old
+ new
@@ -1,287 +1,209 @@
-/*! 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 */
+/*! Respond.js v1.4.0: min/max-width media query polyfill. (c) Scott Jehl. MIT Lic. j.mp/respondjs */
+(function( w ){
-window.matchMedia = window.matchMedia || (function( doc, undefined ) {
+ "use strict";
- "use strict";
+ //exposed namespace
+ var respond = {};
+ w.respond = respond;
- var bool,
- docElem = doc.documentElement,
- refNode = docElem.firstElementChild || docElem.firstChild,
- // fakeBody required for <FF4 when executed in <head>
- fakeBody = doc.createElement( "body" ),
- div = doc.createElement( "div" );
+ //define update even in native-mq-supporting browsers, to avoid errors
+ respond.update = function(){};
- div.id = "mq-test-1";
- div.style.cssText = "position:absolute;top:-100em";
- fakeBody.style.background = "none";
- fakeBody.appendChild(div);
+ //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;
+ };
+ })(),
- return function(q){
+ //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 );
+ };
- div.innerHTML = "­<style media=\"" + q + "\"> #mq-test-1 { width: 42px; }</style>";
+ //expose for testing
+ respond.ajax = ajax;
+ respond.queue = requestQueue;
- docElem.insertBefore( fakeBody, refNode );
- bool = div.offsetWidth === 42;
- docElem.removeChild( fakeBody );
+ // expose for testing
+ respond.regex = {
+ media: /@media[^\{]+\{([^\{\}]*\{[^\}\{]*\})+/gi,
+ keyframes: /@.*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: /\([\s]*max\-width\s*:[\s]*([\s]*[0-9\.]+)(px|em)[\s]*\)/
+ };
- return {
- matches: bool,
- media: q
- };
-
- };
-
-}( document ));
-
-
-
-
-
-/*! Respond.js v1.3.0: min/max-width media query polyfill. (c) Scott Jehl. MIT/GPLv2 Lic. j.mp/respondjs */
-(function( win ){
-
- "use strict";
-
- //exposed namespace
- var respond = {};
- win.respond = respond;
-
- //define update even in native-mq-supporting browsers, to avoid errors
- respond.update = function(){};
-
//expose media query support flag for external use
- respond.mediaQueriesSupported = win.matchMedia && win.matchMedia( "only all" ).matches;
-
+ 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 = win.document,
+ 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" ),
- requestQueue = [],
-
- //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] === win.location.host ){
- requestQueue.push( {
- href: href,
- media: media
- } );
- }
- }
- }
- }
- makeRequests();
- },
-
- //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
- win.setTimeout(function(){ makeRequests(); },0);
- } );
- }
- },
-
- //find media blocks in css text, convert to style blocks
- translate = function( styles, href, media ){
- var qs = styles.match( /@media[^\{]+\{([^\{\}]*\{[^\}\{]*\})+/gi ),
- ql = qs && qs.length || 0;
-
- //try to get CSS path
- href = href.substring( 0, href.lastIndexOf( "/" ) );
-
- var repUrls = function( css ){
- return css.replace( /(url\()['"]?([^\/\)'"][^:\)'"]+)['"]?(\))/g, "$1" + href + "$2$3" );
- },
- useMedia = !ql && media;
-
- //if path exists, tack on trailing slash
- if( href.length ){ href += "/"; }
-
- //if no internal queries exist, but media attr does, use that
- //note: this currently lacks support for situations where a media attr is specified on a link AND
- //its associated stylesheet has internal CSS media queries.
- //In those cases, the media attribute will currently be ignored.
- if( useMedia ){
- ql = 1;
- }
-
- for( var i = 0; i < ql; i++ ){
- var fullq, thisq, eachq, eql;
-
- //media attr
- if( useMedia ){
- fullq = media;
- rules.push( repUrls( styles ) );
- }
- //parse for styles
- else{
- fullq = qs[ i ].match( /@media *([^\{]+)\{([\S\s]+?)$/ ) && 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( /(only\s+)?([a-zA-Z]+)\s?/ ) && RegExp.$2 || "all",
- rules : rules.length - 1,
- hasquery : thisq.indexOf("(") > -1,
- minw : thisq.match( /\(\s*min\-width\s*:\s*(\s*[0-9\.]+)(px|em)\s*\)/ ) && parseFloat( RegExp.$1 ) + ( RegExp.$2 || "" ),
- maxw : thisq.match( /\(\s*max\-width\s*:\s*(\s*[0-9\.]+)(px|em)\s*\)/ ) && parseFloat( RegExp.$1 ) + ( RegExp.$2 || "" )
- } );
- }
- }
-
- applyMedia();
- },
-
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 );
-
- docElem.insertBefore( body, docElem.firstChild );
-
+
+ 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;
},
-
- //cached container for 1em value, populated the first time it's needed
- eminpx,
-
+
//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
+ //throttle resize calls
if( fromResize && lastCall && now - lastCall < resizeThrottle ){
- win.clearTimeout( resizeDefer );
- resizeDefer = win.setTimeout( applyMedia, 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 ] );
}
}
}
-
+
//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.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 ){
+
+ if ( ss.styleSheet ){
ss.styleSheet.cssText = css;
}
else {
ss.appendChild( doc.createTextNode( css ) );
}
@@ -289,54 +211,130 @@
//push to appendedEls to track for later removal
appendedEls.push( ss );
}
}
},
- //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;
+ //find media blocks in css text, convert to style blocks
+ translate = function( styles, href, media ){
+ var qs = styles.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 ) );
}
- callback( req.responseText );
- };
- if ( req.readyState === 4 ){
- return;
+ //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 ];
+ 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 || "" )
+ } );
+ }
}
- req.send( null );
+
+ applyMedia();
},
- //define ajax obj
- xmlHttp = (function() {
- var xmlhttpmethod = false;
- try {
- xmlhttpmethod = new win.XMLHttpRequest();
+
+ //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);
+ } );
}
- catch( e ){
- xmlhttpmethod = new win.ActiveXObject( "Microsoft.XMLHTTP" );
+ },
+
+ //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
+ } );
+ }
+ }
+ }
}
- return function(){
- return xmlhttpmethod;
- };
- })();
-
+ 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( win.addEventListener ){
- win.addEventListener( "resize", callMedia, false );
+
+ if( w.addEventListener ){
+ w.addEventListener( "resize", callMedia, false );
}
- else if( win.attachEvent ){
- win.attachEvent( "onresize", callMedia );
+ else if( w.attachEvent ){
+ w.attachEvent( "onresize", callMedia );
}
})(this);