lib/dojo/domReady.js.uncompressed.js

   1 define("dojo/domReady", ['./has'], function(has){
   2         var global = this,
   3                 doc = document,
   4                 readyStates = { 'loaded': 1, 'complete': 1 },
   5                 fixReadyState = typeof doc.readyState != "string",
   6                 ready = !!readyStates[doc.readyState];
   7
   8         // For FF <= 3.5
   9         if(fixReadyState){ doc.readyState = "loading"; }
  10
  11         if(!ready){
  12                 var readyQ = [], tests = [],
  13                         detectReady = function(evt){
  14                                 evt = evt || global.event;
  15                                 if(ready || (evt.type == "readystatechange" && !readyStates[doc.readyState])){ return; }
  16                                 ready = 1;
  17
  18                                 // For FF <= 3.5
  19                                 if(fixReadyState){ doc.readyState = "complete"; }
  20
  21                                 while(readyQ.length){
  22                                         (readyQ.shift())(doc);
  23                                 }
  24                         },
  25                         on = function(node, event){
  26                                 node.addEventListener(event, detectReady, false);
  27                                 readyQ.push(function(){ node.removeEventListener(event, detectReady, false); });
  28                         };
  29
  30                 if(!has("dom-addeventlistener")){
  31                         on = function(node, event){
  32                                 event = "on" + event;
  33                                 node.attachEvent(event, detectReady);
  34                                 readyQ.push(function(){ node.detachEvent(event, detectReady); });
  35                         };
  36
  37                         var div = doc.createElement("div");
  38                         try{
  39                                 if(div.doScroll && global.frameElement === null){
  40                                         // the doScroll test is only useful if we're in the top-most frame
  41                                         tests.push(function(){
  42                                                 // Derived with permission from Diego Perini's IEContentLoaded
  43                                                 // http://javascript.nwbox.com/IEContentLoaded/
  44                                                 try{
  45                                                         div.doScroll("left");
  46                                                         return 1;
  47                                                 }catch(e){}
  48                                         });
  49                                 }
  50                         }catch(e){}
  51                 }
  52
  53                 on(doc, "DOMContentLoaded");
  54                 on(global, "load");
  55
  56                 if("onreadystatechange" in doc){
  57                         on(doc, "readystatechange");
  58                 }else if(!fixReadyState){
  59                         // if the ready state property exists and there's
  60                         // no readystatechange event, poll for the state
  61                         // to change
  62                         tests.push(function(){
  63                                 return readyStates[doc.readyState];
  64                         });
  65                 }
  66
  67                 if(tests.length){
  68                         var poller = function(){
  69                                 if(ready){ return; }
  70                                 var i = tests.length;
  71                                 while(i--){
  72                                         if(tests[i]()){
  73                                                 detectReady("poller");
  74                                                 return;
  75                                         }
  76                                 }
  77                                 setTimeout(poller, 30);
  78                         };
  79                         poller();
  80                 }
  81         }
  82
  83         function domReady(callback){
  84                 // summary:
  85                 //              Plugin to delay require()/define() callback from firing until the DOM has finished loading.
  86                 if(ready){
  87                         callback(doc);
  88                 }else{
  89                         readyQ.push(callback);
  90                 }
  91         }
  92         domReady.load = function(id, req, load){
  93                 domReady(load);
  94         };
  95
  96         return domReady;
  97 });