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November 22, 2010 23:41
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Trying to add access to the api inside of callbacks
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/** | |
* Yepnope JS | |
* | |
* Version 0.2.6pre | |
* | |
* by Alex Sexton - [email protected] | |
* | |
* Tri-Licensed WTFPL, BSD, & MIT | |
*/ | |
(function(window, doc, undef) { | |
// Save old $LAB value | |
var $LAB, | |
old$LAB = window.$LAB, | |
docHead = doc.getElementsByTagName("head")[0] || doc.documentElement, | |
docFirst = docHead.firstChild, | |
toString = {}.toString, | |
noop = function(){}, | |
test = { | |
isArray: Array.isArray || function( obj ) { | |
return toString.call(obj) == "[object Array]"; | |
}, | |
isObject: function(obj) { | |
// Lame object detection, but don't pass it stupid stuff? | |
return typeof obj == "object"; | |
}, | |
isString: function(s) { | |
return typeof s == "string"; | |
}, | |
isFunction: function(fn) { | |
return toString.call(fn) == '[object Function]'; | |
} | |
}, | |
globalFilters = [], | |
prefixes = { | |
'css': function(resource) { | |
resource.forceCSS = true; | |
return resource; | |
}, | |
'wait': function(resource) { | |
// This just adds an empty callback to force a lab wait | |
resource.autoCallback = noop; | |
return resource; | |
} | |
}; | |
// LABJS 1.0.3 | |
/*! LAB.js (LABjs :: Loading And Blocking JavaScript) | |
v1.0.3 (c) Kyle Simpson | |
MIT License | |
*/ | |
(function(global){ | |
var sSTRING = "string", // constants used for compression optimization | |
sHEAD = "head", | |
sBODY = "body", | |
sSCRIPT = "script", | |
sREADYSTATE = "readyState", | |
sPRELOADDONE = "preloaddone", | |
sLOADTRIGGER = "loadtrigger", | |
sSRCURI = "srcuri", | |
sPRELOAD = "preload", | |
sCOMPLETE = "complete", | |
sDONE = "done", | |
sWHICH = "which", | |
sPRESERVE = "preserve", | |
sONREADYSTATECHANGE = "onreadystatechange", | |
sONLOAD = "onload", | |
sHASOWNPROPERTY = "hasOwnProperty", | |
sSCRIPTCACHE = "script/cache", | |
sTYPEOBJ = "[object ", | |
sTYPEFUNC = sTYPEOBJ+"Function]", | |
sTYPEARRAY = sTYPEOBJ+"Array]", | |
nNULL = null, | |
bTRUE = true, | |
bFALSE = false, | |
oDOC = global.document, | |
oWINLOC = global.location, | |
oACTIVEX = global.ActiveXObject, | |
fSETTIMEOUT = global.setTimeout, | |
fCLEARTIMEOUT = global.clearTimeout, | |
fGETELEMENTSBYTAGNAME = function(tn){return oDOC.getElementsByTagName(tn);}, | |
fOBJTOSTRING = Object.prototype.toString, | |
fNOOP = function(){}, | |
append_to = {}, | |
all_scripts = {}, | |
PAGEROOT = /^[^?#]*\//.exec(oWINLOC.href)[0], // these ROOTs do not support file:/// usage, only http:// type usage | |
DOCROOT = /^\w+\:\/\/\/?[^\/]+/.exec(PAGEROOT)[0], // optional third / in the protocol portion of this regex so that LABjs doesn't blow up when used in file:/// usage | |
docScripts = fGETELEMENTSBYTAGNAME(sSCRIPT), | |
// Ah-ha hush that fuss, feature inference is used to detect specific browsers | |
// because the techniques used in LABjs have no known feature detection. If | |
// you know of a feature test please contact me ASAP. Feature inference is used | |
// instead of user agent sniffing because the UA string can be easily | |
// spoofed and is not adequate for such a mission critical part of the code. | |
is_opera = global.opera && fOBJTOSTRING.call(global.opera) == sTYPEOBJ+"Opera]", | |
is_gecko = ("MozAppearance" in oDOC.documentElement.style), | |
global_defs = { | |
cache:!(is_gecko||is_opera), // browsers like IE/Safari/Chrome can use the "cache" trick to preload | |
order:is_gecko||is_opera, // FF/Opera preserve execution order with script tags automatically, so just add all scripts as fast as possible | |
xhr:bTRUE, // use XHR trick to preload local scripts | |
dupe:bTRUE, // allow duplicate scripts? defaults to true now 'cause is slightly more performant that way (less checks) | |
base:"", // base path to prepend to all non-absolute-path scripts | |
which:sHEAD // which DOM object ("head" or "body") to append scripts to | |
} | |
; | |
global_defs[sPRESERVE] = bFALSE; // force preserve execution order of all loaded scripts (regardless of preloading) | |
global_defs[sPRELOAD] = bTRUE; // use various tricks for "preloading" scripts | |
append_to[sHEAD] = oDOC.head || fGETELEMENTSBYTAGNAME(sHEAD); | |
append_to[sBODY] = fGETELEMENTSBYTAGNAME(sBODY); | |
function isFunc(func) { return fOBJTOSTRING.call(func) === sTYPEFUNC; } | |
function canonicalScriptURI(src,base_path) { | |
var regex = /^\w+\:\/\//, ret; | |
if (typeof src != sSTRING) src = ""; | |
if (typeof base_path != sSTRING) base_path = ""; | |
ret = (regex.test(src) ? "" : base_path) + src; | |
return ((regex.test(ret) ? "" : (ret.charAt(0) === "/" ? DOCROOT : PAGEROOT)) + ret); | |
} | |
function sameDomain(src) { return (canonicalScriptURI(src).indexOf(DOCROOT) === 0); } | |
function scriptTagExists(uri) { // checks if a script uri has ever been loaded into this page's DOM | |
var script, idx=-1; | |
while (script = docScripts[++idx]) { | |
if (typeof script.src == sSTRING && uri === canonicalScriptURI(script.src) && script.type !== sSCRIPTCACHE) return bTRUE; | |
} | |
return bFALSE; | |
} | |
function engine(queueExec,opts) { | |
queueExec = !(!queueExec); | |
if (opts == nNULL) opts = global_defs; | |
var ready = bFALSE, | |
_use_preload = queueExec && opts[sPRELOAD], | |
_use_cache_preload = _use_preload && opts.cache, | |
_use_script_order = _use_preload && opts.order, | |
_use_xhr_preload = _use_preload && opts.xhr, | |
_auto_wait = opts[sPRESERVE], | |
_which = opts.which, | |
_base_path = opts.base, | |
waitFunc = fNOOP, | |
scripts_loading = bFALSE, | |
publicAPI, | |
first_pass = bTRUE, | |
scripts = {}, | |
exec = [], | |
end_of_chain_check_interval = nNULL | |
; | |
_use_preload = _use_cache_preload || _use_xhr_preload || _use_script_order; // if all flags are turned off, preload is moot so disable it | |
function isScriptLoaded(elem,scriptentry) { | |
if ((elem[sREADYSTATE] && elem[sREADYSTATE]!==sCOMPLETE && elem[sREADYSTATE]!=="loaded") || scriptentry[sDONE]) { return bFALSE; } | |
elem[sONLOAD] = elem[sONREADYSTATECHANGE] = nNULL; // prevent memory leak | |
return bTRUE; | |
} | |
function handleScriptLoad(elem,scriptentry,skipReadyCheck) { | |
skipReadyCheck = !(!skipReadyCheck); // used to override ready check when script text was injected from XHR preload | |
if (!skipReadyCheck && !(isScriptLoaded(elem,scriptentry))) return; | |
scriptentry[sDONE] = bTRUE; | |
for (var key in scripts) { | |
if (scripts[sHASOWNPROPERTY](key) && !(scripts[key][sDONE])) return; | |
} | |
ready = bTRUE; | |
waitFunc(); | |
} | |
function loadTriggerExecute(scriptentry) { | |
if (isFunc(scriptentry[sLOADTRIGGER])) { | |
scriptentry[sLOADTRIGGER](); | |
scriptentry[sLOADTRIGGER] = nNULL; // prevent memory leak | |
} | |
} | |
function handleScriptPreload(elem,scriptentry) { | |
if (!isScriptLoaded(elem,scriptentry)) return; | |
scriptentry[sPRELOADDONE] = bTRUE; | |
fSETTIMEOUT(function(){ | |
append_to[scriptentry[sWHICH]].removeChild(elem); // remove preload script node | |
loadTriggerExecute(scriptentry); | |
},0); | |
} | |
function handleXHRPreload(xhr,scriptentry) { | |
if (xhr[sREADYSTATE] === 4) { | |
xhr[sONREADYSTATECHANGE] = fNOOP; // fix a memory leak in IE | |
scriptentry[sPRELOADDONE] = bTRUE; | |
fSETTIMEOUT(function(){ loadTriggerExecute(scriptentry); },0); | |
} | |
} | |
function createScriptTag(scriptentry,src,type,charset,onload,scriptText) { | |
var _script_which = scriptentry[sWHICH]; | |
fSETTIMEOUT(function() { // this setTimeout waiting "hack" prevents a nasty race condition browser hang (IE) when the document.write("<script defer=true>") type dom-ready hack is present in the page | |
if ("item" in append_to[_script_which]) { // check if ref is still a live node list | |
if (!append_to[_script_which][0]) { // append_to node not yet ready | |
fSETTIMEOUT(arguments.callee,25); // try again in a little bit -- note, will recall the anonymous function in the outer setTimeout, not the parent createScriptTag() | |
return; | |
} | |
append_to[_script_which] = append_to[_script_which][0]; // reassign from live node list ref to pure node ref -- avoids nasty IE bug where changes to DOM invalidate live node lists | |
} | |
var scriptElem = oDOC.createElement(sSCRIPT); | |
if (typeof type == sSTRING) scriptElem.type = type; | |
if (typeof charset == sSTRING) scriptElem.charset = charset; | |
if (isFunc(onload)) { // load script via 'src' attribute, set onload/onreadystatechange listeners | |
scriptElem[sONLOAD] = scriptElem[sONREADYSTATECHANGE] = function(){onload(scriptElem,scriptentry);}; | |
scriptElem.src = src; | |
} | |
// only for appending to <head>, fix a bug in IE6 if <base> tag is present -- otherwise, insertBefore(...,null) acts just like appendChild() | |
append_to[_script_which].insertBefore(scriptElem,(_script_which===sHEAD?append_to[_script_which].firstChild:nNULL)); | |
if (typeof scriptText == sSTRING) { // script text already avaiable from XHR preload, so just inject it | |
scriptElem.text = scriptText; | |
handleScriptLoad(scriptElem,scriptentry,bTRUE); // manually call 'load' callback function, skipReadyCheck=true | |
} | |
},0); | |
} | |
function loadScriptElem(scriptentry,src,type,charset) { | |
all_scripts[scriptentry[sSRCURI]] = bTRUE; | |
createScriptTag(scriptentry,src,type,charset,handleScriptLoad); | |
} | |
function loadScriptCache(scriptentry,src,type,charset) { | |
var args = arguments; | |
if (first_pass && scriptentry[sPRELOADDONE] == nNULL) { // need to preload into cache | |
scriptentry[sPRELOADDONE] = bFALSE; | |
createScriptTag(scriptentry,src,sSCRIPTCACHE,charset,handleScriptPreload); // fake mimetype causes a fetch into cache, but no execution | |
} | |
else if (!first_pass && scriptentry[sPRELOADDONE] != nNULL && !scriptentry[sPRELOADDONE]) { // preload still in progress, make sure trigger is set for execution later | |
scriptentry[sLOADTRIGGER] = function(){loadScriptCache.apply(nNULL,args);}; | |
} | |
else if (!first_pass) { // preload done, so reload (from cache, hopefully!) as regular script element | |
loadScriptElem.apply(nNULL,args); | |
} | |
} | |
function loadScriptXHR(scriptentry,src,type,charset) { | |
var args = arguments, xhr; | |
if (first_pass && scriptentry[sPRELOADDONE] == nNULL) { // need to preload | |
scriptentry[sPRELOADDONE] = bFALSE; | |
xhr = scriptentry.xhr = (oACTIVEX ? new oACTIVEX("Microsoft.XMLHTTP") : new global.XMLHttpRequest()); | |
xhr[sONREADYSTATECHANGE] = function(){handleXHRPreload(xhr,scriptentry);}; | |
xhr.open("GET",src); | |
xhr.send(""); | |
} | |
else if (!first_pass && scriptentry[sPRELOADDONE] != nNULL && !scriptentry[sPRELOADDONE]) { // preload XHR still in progress, make sure trigger is set for execution later | |
scriptentry[sLOADTRIGGER] = function(){loadScriptXHR.apply(nNULL,args);}; | |
} | |
else if (!first_pass) { // preload done, so "execute" script via injection | |
all_scripts[scriptentry[sSRCURI]] = bTRUE; | |
createScriptTag(scriptentry,src,type,charset,nNULL,scriptentry.xhr.responseText); | |
scriptentry.xhr = nNULL; | |
} | |
} | |
function loadScript(o) { | |
if (o.allowDup == nNULL) o.allowDup = opts.dupe; | |
var src = o.src, type = o.type, charset = o.charset, allowDup = o.allowDup, | |
src_uri = canonicalScriptURI(src,_base_path), scriptentry, same_domain = sameDomain(src_uri); | |
if (typeof charset != sSTRING) charset = nNULL; | |
allowDup = !(!allowDup); | |
if (!allowDup && | |
( | |
(all_scripts[src_uri] != nNULL) || (first_pass && scripts[src_uri]) || scriptTagExists(src_uri) | |
) | |
) { | |
if (scripts[src_uri] != nNULL && scripts[src_uri][sPRELOADDONE] && !scripts[src_uri][sDONE] && same_domain) { | |
// this script was preloaded via XHR, but is a duplicate, and dupes are not allowed | |
handleScriptLoad(nNULL,scripts[src_uri],bTRUE); // mark the entry as done and check if chain group is done | |
} | |
return; | |
} | |
if (scripts[src_uri] == nNULL) scripts[src_uri] = {}; | |
scriptentry = scripts[src_uri]; | |
if (scriptentry[sWHICH] == nNULL) scriptentry[sWHICH] = _which; | |
scriptentry[sDONE] = bFALSE; | |
scriptentry[sSRCURI] = src_uri; | |
scripts_loading = bTRUE; | |
if (!_use_script_order && _use_xhr_preload && same_domain) loadScriptXHR(scriptentry,src_uri,type,charset); | |
else if (!_use_script_order && _use_cache_preload) loadScriptCache(scriptentry,src_uri,type,charset); | |
else loadScriptElem(scriptentry,src_uri,type,charset); | |
} | |
function onlyQueue(execBody) { | |
exec.push(execBody); | |
} | |
function queueAndExecute(execBody) { // helper for publicAPI functions below | |
if (queueExec && !_use_script_order) onlyQueue(execBody); | |
if (!queueExec || _use_preload) execBody(); // if engine is either not queueing, or is queuing in preload mode, go ahead and execute | |
} | |
function serializeArgs(args) { | |
var sargs = [], idx; | |
for (idx=-1; ++idx<args.length;) { | |
if (fOBJTOSTRING.call(args[idx]) === sTYPEARRAY) sargs = sargs.concat(serializeArgs(args[idx])); | |
else sargs[sargs.length] = args[idx]; | |
} | |
return sargs; | |
} | |
publicAPI = { | |
script:function() { | |
fCLEARTIMEOUT(end_of_chain_check_interval); | |
var args = serializeArgs(arguments), use_engine = publicAPI, idx; | |
if (_auto_wait) { | |
for (idx=-1; ++idx<args.length;) { | |
if (idx===0) { | |
queueAndExecute(function(){ | |
loadScript((typeof args[0] == sSTRING) ? {src:args[0]} : args[0]); | |
}); | |
} | |
else use_engine = use_engine.script(args[idx]); | |
use_engine = use_engine.wait(); | |
} | |
} | |
else { | |
queueAndExecute(function(){ | |
for (idx=-1; ++idx<args.length;) { | |
loadScript((typeof args[idx] == sSTRING) ? {src:args[idx]} : args[idx]); | |
} | |
}); | |
} | |
end_of_chain_check_interval = fSETTIMEOUT(function(){first_pass = bFALSE;},5); // hack to "detect" the end of the chain if a wait() is not the last call | |
return use_engine; | |
}, | |
wait:function(func) { | |
fCLEARTIMEOUT(end_of_chain_check_interval); | |
first_pass = bFALSE; | |
if (!isFunc(func)) func = fNOOP; | |
// On this current chain's waitFunc function, tack on call to trigger the queue for the *next* engine | |
// in the chain, which will be executed when the current chain finishes loading | |
var e = engine(bTRUE,opts), // 'bTRUE' tells the engine to be in queueing mode | |
triggerNextChain = e.trigger, // store ref to e's trigger function for use by 'wfunc' | |
wfunc = function(){ try { func(); } catch(err) {} triggerNextChain(); }; | |
delete e.trigger; // remove the 'trigger' property from e's public API, since only used internally | |
var fn = function(){ | |
if (scripts_loading && !ready) waitFunc = wfunc; | |
else wfunc(); | |
}; | |
if (queueExec && !scripts_loading) onlyQueue(fn); | |
else queueAndExecute(fn); | |
return e; | |
} | |
}; | |
if (queueExec) { | |
// if queueing, return a function that the previous chain's waitFunc function can use to trigger this | |
// engine's queue. NOTE: this trigger function is captured and removed from the public chain API before return | |
publicAPI.trigger = function() { | |
var fn, idx=-1; | |
while (fn = exec[++idx]) fn(); | |
exec = []; | |
}; | |
} | |
return publicAPI; | |
} | |
function processOpts(opts) { | |
var k, newOpts = {}, | |
boolOpts = {"UseCachePreload":"cache","UseLocalXHR":"xhr","UsePreloading":sPRELOAD,"AlwaysPreserveOrder":sPRESERVE,"AllowDuplicates":"dupe"}, | |
allOpts = {"AppendTo":sWHICH,"BasePath":"base"} | |
; | |
for (k in boolOpts) allOpts[k] = boolOpts[k]; | |
newOpts.order = !(!global_defs.order); | |
for (k in allOpts) { | |
if (allOpts[sHASOWNPROPERTY](k) && global_defs[allOpts[k]] != nNULL) newOpts[allOpts[k]] = (opts[k] != nNULL) ? opts[k] : global_defs[allOpts[k]]; | |
} | |
for (k in boolOpts) { // normalize bool props to actual boolean values if not already | |
if (boolOpts[sHASOWNPROPERTY](k)) newOpts[boolOpts[k]] = !(!newOpts[boolOpts[k]]); | |
} | |
if (!newOpts[sPRELOAD]) newOpts.cache = newOpts.order = newOpts.xhr = bFALSE; // turn off all flags if preloading is disabled | |
newOpts.which = (newOpts.which === sHEAD || newOpts.which === sBODY) ? newOpts.which : sHEAD; | |
return newOpts; | |
} | |
global.$LAB = { | |
setGlobalDefaults:function(gdefs) { // intentionally does not return an "engine" instance -- must call as stand-alone function call on $LAB | |
global_defs = processOpts(gdefs); | |
}, | |
setOptions:function(opts){ // set options per chain | |
return engine(bFALSE,processOpts(opts)); | |
}, | |
script:function(){ // will load one or more scripts | |
return engine().script.apply(nNULL,arguments); | |
}, | |
wait:function(){ // will ensure that the chain's previous scripts are executed before execution of scripts in subsequent chain links | |
return engine().wait.apply(nNULL,arguments); | |
} | |
}; | |
/* The following "hack" was suggested by Andrea Giammarchi and adapted from: http://webreflection.blogspot.com/2009/11/195-chars-to-help-lazy-loading.html | |
NOTE: this hack only operates in FF and then only in versions where document.readyState is not present (FF < 3.6?). | |
The hack essentially "patches" the **page** that LABjs is loaded onto so that it has a proper conforming document.readyState, so that if a script which does | |
proper and safe dom-ready detection is loaded onto a page, after dom-ready has passed, it will still be able to detect this state, by inspecting the now hacked | |
document.readyState property. The loaded script in question can then immediately trigger any queued code executions that were waiting for the DOM to be ready. | |
For instance, jQuery 1.4+ has been patched to take advantage of document.readyState, which is enabled by this hack. But 1.3.2 and before are **not** safe or | |
fixed by this hack, and should therefore **not** be lazy-loaded by script loader tools such as LABjs. | |
*/ | |
(function(addEvent,domLoaded,handler){ | |
if (oDOC[sREADYSTATE] == nNULL && oDOC[addEvent]){ | |
oDOC[sREADYSTATE] = "loading"; | |
oDOC[addEvent](domLoaded,handler = function(){ | |
oDOC.removeEventListener(domLoaded,handler,bFALSE); | |
oDOC[sREADYSTATE] = sCOMPLETE; | |
},bFALSE); | |
} | |
})("addEventListener","DOMContentLoaded"); | |
})(window); | |
$LAB = window.$LAB; | |
window.$LAB = old$LAB; | |
// Yepnope | |
var yepnope = function(needs, currentLabChain) { | |
var i, | |
need, | |
nlen = needs.length, | |
// start the chain as a plain instance | |
labChain = currentLabChain || $LAB; | |
function satisfyPrefixes(url) { | |
// make sure we have a url | |
if (url) { | |
// split all prefixes out | |
var parts = url.split('!'), | |
pLen = parts.length, | |
gLen = globalFilters.length, | |
origUrl = parts[pLen-1], | |
res = { | |
url: origUrl, | |
origUrl: origUrl, // keep this one static for callback variable consistency | |
prefixes: (pLen > 1) ? parts.slice(0, pLen-1) : undef | |
}, | |
mFunc, j, z; | |
// loop through prefixes | |
// if there are none, this automatically gets skipped | |
for (j = 0; j < pLen-1; j++) { | |
mFunc = prefixes[parts[j]]; | |
if (mFunc) { | |
res = mFunc(res); | |
} | |
} | |
// Go through our global filters | |
for (z = 0; z < gLen; z++) { | |
res = globalFilters[z](res); | |
} | |
// return the final url | |
return res; | |
} | |
return false; | |
} | |
function loadScriptOrStyle(input, callback, labChain, index, testResult) { | |
// run through our set of prefixes | |
var resource = satisfyPrefixes(input); | |
// if no object is returned or the url is empty/false just exit the load | |
if (!resource || !resource.url || resource.bypass) { | |
return labChain; | |
} | |
var inc = resource.url, | |
origInc = resource.origUrl, | |
incLen = inc.length, | |
instead = resource.instead, | |
autoCallback = resource.autoCallback, | |
forceJS = resource.forceJS, | |
forceCSS = resource.forceCSS, | |
moreYepnope = function(labChain) { | |
return (function(input) { | |
return yepnope(input, labChain); | |
}); | |
}, | |
isLAB = function(obj) { | |
return !!(obj && 'wait' in obj); | |
}, | |
cbRet, | |
autoCbRet, | |
styleElem; | |
// Determine callback, if any | |
if (callback) { | |
callback = test.isFunction(callback) ? callback : callback[input] || callback[index] || callback[( input.split('/').pop().split('?')[0])]; | |
} | |
// if someone is overriding all normal functionality | |
if (instead) { | |
return instead(input, callback, labChain, index, testResult); | |
} | |
// If it's specifically css with the prefix, just inject it (useful for weird extensions and cachebusted urls, etc) | |
// Also do this if it ends in a .css extension | |
else if (incLen > 4 && (forceCSS || (!forceJS && inc.substr(incLen-4) === '.css'))) { | |
styleElem = doc.createElement('link'); | |
// add our src to it | |
styleElem.href = inc; | |
styleElem.rel = 'stylesheet'; | |
styleElem.type = 'text/css'; | |
// inject the file | |
docHead.insertBefore(styleElem, docFirst); | |
// call the callback | |
callback && (cbRet = callback(origInc, index, moreYepnope(labChain), testResult)); | |
// Verify the return value is a labChain | |
if (isLAB(cbRet)) { | |
labChain = cbRet; | |
} | |
// Do the same for any auto callbacks | |
autoCallback && (autoCbRet = autoCallback(origInc, index, moreYepnope(labChain), testResult)); | |
// Verify lab instance | |
if (isLAB(autoCbRet)) { | |
labChain = autoCbRet; | |
} | |
} | |
// Otherwise assume that it's a script | |
else { | |
// Don't do a callback if it didn't have one | |
labChain = labChain.script(inc); | |
// Call the callback if we have one (via the labjs wait) | |
if (callback || autoCallback) { | |
labChain = labChain.wait((function(labChain){ | |
return function() { | |
// pass the callback the unique loaded script | |
callback && (cbRet = callback(origInc, index, moreYepnope(labChain), testResult)); | |
// Verify LAB | |
if (isLAB(cbRet)) { | |
console.log('cbRet', cbRet); | |
labChain = cbRet; | |
} | |
// If the autoCallback exists, call it | |
autoCallback && (autoCbRet = autoCallback(inc, index, moreYepnope(labChain), testResult)); | |
// Verify lab instance | |
if (isLAB(autoCbRet)) { | |
labChain = autoCbRet; | |
} | |
}; | |
})()); | |
} | |
} | |
return labChain; | |
} | |
function loadFromTestObject(testObject, labChain) { | |
var testResult = !!(testObject.test), | |
needGroup = (testResult) ? testObject.yep : testObject.nope, | |
// Callback or wait option should cause LabLS to block | |
callback = testObject.callback || (testObject.wait ? noop : undef); | |
// If it's a string | |
if (test.isString(needGroup)) { | |
// Just load the script of style | |
labChain = loadScriptOrStyle(needGroup, callback, labChain, 0, testResult); | |
} | |
// If it's an array | |
else if (test.isArray(needGroup)) { | |
// Grab each thing out of it | |
for (var l = 0; l < needGroup.length; l++) { | |
// Load each thing | |
labChain = loadScriptOrStyle(needGroup[l], callback, labChain, l, testResult); | |
} | |
} | |
// Alias 'both' as 'load' so it's more semantic sometimes | |
if (testObject.both && !testObject.load) { | |
testObject.load = testObject.both; | |
} | |
// get anything in the load object as well | |
if (test.isString(testObject.load)) { | |
// Just load the script of style | |
labChain = loadScriptOrStyle(testObject.load, callback, labChain, 0, testResult); | |
} | |
// If it's an array | |
else if (test.isArray(testObject.load)) { | |
// Grab each thing out of it | |
for (var k = 0; k < testObject.load.length; k++) { | |
// Load each thing | |
labChain = loadScriptOrStyle(testObject.load[k], callback, labChain, k, testResult); | |
} | |
} | |
// Fire complete callback | |
if (testObject.complete) { | |
labChain = labChain.wait(testObject.complete); | |
} | |
return labChain; | |
} | |
// Someone just decides to load a single script or css file as a string | |
if (test.isString(needs)) { | |
labChain = loadScriptOrStyle(needs, false, labChain, 0); | |
} | |
// Normal case is likely an array of different types of loading options | |
else if (test.isArray(needs)) { | |
// go through the list of needs | |
for(i=0; i < nlen; i++) { | |
need = needs[i]; | |
// if it's a string, just load it | |
if (test.isString(need)) { | |
labChain = loadScriptOrStyle(need, false, labChain, 0); | |
} | |
// if it's an array, call our function recursively | |
else if (test.isArray(need)) { | |
labChain = yepnope(need, labChain); | |
} | |
// if it's an object, use our modernizr logic to win | |
else if (test.isObject(need)) { | |
labChain = loadFromTestObject(need, labChain); | |
} | |
} | |
} | |
// Allow a single object to be passed in | |
else if (test.isObject(needs)) { | |
labChain = loadFromTestObject(needs, labChain); | |
} | |
// allow more loading on this chain | |
return labChain; | |
}; | |
yepnope.addPrefix = function(prefix, callback) { | |
prefixes[prefix] = callback; | |
}; | |
yepnope.addFilter = function(filter) { | |
globalFilters.push(filter); | |
}; | |
yepnope.$LAB = $LAB; | |
// Leak me | |
window.yepnope = yepnope; | |
})(this, this.document); |
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