define(['./has'], function(has){
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var global = (function () { return this; })(),
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doc = document,
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readyStates = { 'loaded': 1, 'complete': 1 },
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fixReadyState = typeof doc.readyState != "string",
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ready = !!readyStates[doc.readyState],
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readyQ = [],
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recursiveGuard;
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function domReady(callback){
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// summary:
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// Plugin to delay require()/define() callback from firing until the DOM has finished loading.
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readyQ.push(callback);
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if(ready){ processQ(); }
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}
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domReady.load = function(id, req, load){
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domReady(load);
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};
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// Export queue so that ready() can check if it's empty or not.
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domReady._Q = readyQ;
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domReady._onQEmpty = function(){
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// summary:
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// Private method overridden by dojo/ready, to notify when everything in the
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// domReady queue has been processed. Do not use directly.
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// Will be removed in 2.0, along with domReady._Q.
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};
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// For FF <= 3.5
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if(fixReadyState){ doc.readyState = "loading"; }
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function processQ(){
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// Calls all functions in the queue in order, unless processQ() is already running, in which case just return
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if(recursiveGuard){ return; }
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recursiveGuard = true;
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while(readyQ.length){
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try{
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(readyQ.shift())(doc);
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}catch(err){
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console.error(err, "in domReady callback", err.stack);
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}
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}
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recursiveGuard = false;
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// Notification for dojo/ready. Remove for 2.0.
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// Note that this could add more tasks to the ready queue.
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domReady._onQEmpty();
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}
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if(!ready){
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var tests = [],
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detectReady = function(evt){
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evt = evt || global.event;
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if(ready || (evt.type == "readystatechange" && !readyStates[doc.readyState])){ return; }
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// For FF <= 3.5
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if(fixReadyState){ doc.readyState = "complete"; }
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ready = 1;
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processQ();
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},
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on = function(node, event){
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node.addEventListener(event, detectReady, false);
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readyQ.push(function(){ node.removeEventListener(event, detectReady, false); });
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};
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if(!has("dom-addeventlistener")){
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on = function(node, event){
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event = "on" + event;
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node.attachEvent(event, detectReady);
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readyQ.push(function(){ node.detachEvent(event, detectReady); });
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};
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var div = doc.createElement("div");
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try{
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if(div.doScroll && global.frameElement === null){
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// the doScroll test is only useful if we're in the top-most frame
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tests.push(function(){
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// Derived with permission from Diego Perini's IEContentLoaded
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// http://javascript.nwbox.com/IEContentLoaded/
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try{
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div.doScroll("left");
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return 1;
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}catch(e){}
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});
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}
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}catch(e){}
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}
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on(doc, "DOMContentLoaded");
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on(global, "load");
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if("onreadystatechange" in doc){
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on(doc, "readystatechange");
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}else if(!fixReadyState){
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// if the ready state property exists and there's
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// no readystatechange event, poll for the state
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// to change
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tests.push(function(){
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return readyStates[doc.readyState];
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});
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}
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if(tests.length){
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var poller = function(){
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if(ready){ return; }
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var i = tests.length;
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while(i--){
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if(tests[i]()){
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detectReady("poller");
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return;
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}
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}
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setTimeout(poller, 30);
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};
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poller();
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}
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}
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return domReady;
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});
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