lib/dojo/ready.js.uncompressed.js

   1 define("dojo/ready", ["./_base/kernel", "./has", "require", "./domReady", "./_base/lang"], function(dojo, has, require, domReady, lang){
   2         // module:
   3         //              dojo/ready
   4         // note:
   5         //              This module should be unnecessary in dojo 2.0
   6
   7         var
   8                 // truthy if DOMContentLoaded or better (e.g., window.onload fired) has been achieved
   9                 isDomReady = 0,
  10
  11                 // a function to call to cause onLoad to be called when all requested modules have been loaded
  12                 requestCompleteSignal,
  13
  14                 // The queue of functions waiting to execute as soon as dojo.ready conditions satisfied
  15                 loadQ = [],
  16
  17                 // prevent recursion in onLoad
  18                 onLoadRecursiveGuard = 0,
  19
  20                 handleDomReady = function(){
  21                         isDomReady = 1;
  22                         dojo._postLoad = dojo.config.afterOnLoad = true;
  23                         if(loadQ.length){
  24                                 requestCompleteSignal(onLoad);
  25                         }
  26                 },
  27
  28                 // run the next function queued with dojo.ready
  29                 onLoad = function(){
  30                         if(isDomReady && !onLoadRecursiveGuard && loadQ.length){
  31                                 //guard against recursions into this function
  32                                 onLoadRecursiveGuard = 1;
  33                                 var f = loadQ.shift();
  34                                         try{
  35                                                 f();
  36                                         }
  37                                                 // FIXME: signal the error via require.on
  38                                         finally{
  39                                                 onLoadRecursiveGuard = 0;
  40                                         }
  41                                 onLoadRecursiveGuard = 0;
  42                                 if(loadQ.length){
  43                                         requestCompleteSignal(onLoad);
  44                                 }
  45                         }
  46                 };
  47
  48         require.on("idle", onLoad);
  49         requestCompleteSignal = function(){
  50                 if(require.idle()){
  51                         onLoad();
  52                 } // else do nothing, onLoad will be called with the next idle signal
  53         };
  54
  55         var ready = dojo.ready = dojo.addOnLoad = function(priority, context, callback){
  56                 // summary:
  57                 //              Add a function to execute on DOM content loaded and all requested modules have arrived and been evaluated.
  58                 //              In most cases, the `domReady` plug-in should suffice and this method should not be needed.
  59                 // priority: Integer?
  60                 //              The order in which to exec this callback relative to other callbacks, defaults to 1000
  61                 // context: Object?|Function
  62                 //              The context in which to run execute callback, or a callback if not using context
  63                 // callback: Function?
  64                 //              The function to execute.
  65                 //
  66                 // example:
  67                 //      Simple DOM and Modules ready syntax
  68                 //      |       require(["dojo/ready"], function(ready){
  69                 //      |               ready(function(){ alert("Dom ready!"); });
  70                 //      |       });
  71                 //
  72                 // example:
  73                 //      Using a priority
  74                 //      |       require(["dojo/ready"], function(ready){
  75                 //      |               ready(2, function(){ alert("low priority ready!"); })
  76                 //      |       });
  77                 //
  78                 // example:
  79                 //      Using context
  80                 //      |       require(["dojo/ready"], function(ready){
  81                 //      |               ready(foo, function(){
  82                 //      |                       // in here, this == foo
  83                 //      |               });
  84                 //      |       });
  85                 //
  86                 // example:
  87                 //      Using dojo/hitch style args:
  88                 //      |       require(["dojo/ready"], function(ready){
  89                 //      |               var foo = { dojoReady: function(){ console.warn(this, "dojo dom and modules ready."); } };
  90                 //      |               ready(foo, "dojoReady");
  91                 //      |       });
  92
  93                 var hitchArgs = lang._toArray(arguments);
  94                 if(typeof priority != "number"){
  95                         callback = context;
  96                         context = priority;
  97                         priority = 1000;
  98                 }else{
  99                         hitchArgs.shift();
 100                 }
 101                 callback = callback ?
 102                         lang.hitch.apply(dojo, hitchArgs) :
 103                         function(){
 104                                 context();
 105                         };
 106                 callback.priority = priority;
 107                 for(var i = 0; i < loadQ.length && priority >= loadQ[i].priority; i++){}
 108                 loadQ.splice(i, 0, callback);
 109                 requestCompleteSignal();
 110         };
 111
 112          1 || has.add("dojo-config-addOnLoad", 1);
 113         if( 1 ){
 114                 var dca = dojo.config.addOnLoad;
 115                 if(dca){
 116                         ready[(lang.isArray(dca) ? "apply" : "call")](dojo, dca);
 117                 }
 118         }
 119
 120         if( 1  && dojo.config.parseOnLoad && !dojo.isAsync){
 121                 ready(99, function(){
 122                         if(!dojo.parser){
 123                                 dojo.deprecated("Add explicit require(['dojo/parser']);", "", "2.0");
 124                                 require(["dojo/parser"]);
 125                         }
 126                 });
 127         }
 128
 129         if( 1 ){
 130                 domReady(handleDomReady);
 131         }else{
 132                 handleDomReady();
 133         }
 134
 135         return ready;
 136 });