root / trunk / web / dojo / dojox / lang / async.js @ 12
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/*
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Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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Available via Academic Free License >= 2.1 OR the modified BSD license.
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see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojox.lang.async"]){ |
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dojo._hasResource["dojox.lang.async"]=true; |
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dojo.provide("dojox.lang.async");
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(function(){
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var d=dojo,_1=d.Deferred,_2=d.forEach,_3=d.some,_4=dojox.lang.async,_5=Array.prototype.slice,_6=Object.prototype.toString;
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_4.seq=function(x){ |
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var fs=_6.call(x)=="[object Array]"?x:arguments; |
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return function(_7){ |
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var x=new _1(); |
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_2(fs,function(f){
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x.addCallback(f); |
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}); |
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x.callback(_7); |
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return x;
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}; |
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}; |
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_4.par=function(x){ |
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var fs=_6.call(x)=="[object Array]"?x:arguments; |
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return function(_8){ |
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var _9=new Array(fs.length),_a=function(){ |
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_2(_9,function(v){
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if(v instanceof _1&&v.fired<0){ |
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v.cancel(); |
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} |
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}); |
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},x=new _1(_a),_b=fs.length;
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_2(fs,function(f,i){
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var x;
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try{
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x=f(_8); |
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} |
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catch(e){
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x=e; |
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} |
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_9[i]=x; |
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}); |
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var _c=_3(_9,function(v){ |
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if(v instanceof Error){ |
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_a(); |
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x.errback(v); |
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return true; |
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} |
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return false; |
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}); |
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if(!_c){
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_2(_9,function(v,i){
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if(v instanceof _1){ |
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v.addCallbacks(function(v){
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_9[i]=v; |
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if(!--_b){
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x.callback(_9); |
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} |
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},function(v){
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_a(); |
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x.errback(v); |
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}); |
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}else{
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--_b; |
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} |
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}); |
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} |
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if(!_b){
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x.callback(_9); |
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} |
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return x;
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}; |
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}; |
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_4.any=function(x){ |
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var fs=_6.call(x)=="[object Array]"?x:arguments; |
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return function(_d){ |
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var _e=new Array(fs.length),_f=true; |
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cancel=function(_10){ |
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_2(_e,function(v,i){
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if(i!=_10&&v instanceof _1&&v.fired<0){ |
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v.cancel(); |
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} |
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}); |
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},x=new _1(cancel);
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_2(fs,function(f,i){
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var x;
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try{
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x=f(_d); |
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} |
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catch(e){
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x=e; |
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} |
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_e[i]=x; |
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}); |
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var _11=_3(_e,function(v,i){ |
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if(!(v instanceof _1)){ |
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cancel(i); |
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x.callback(v); |
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return true; |
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} |
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return false; |
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}); |
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if(!_11){
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_2(_e,function(v,i){
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v.addBoth(function(v){
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if(_f){
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_f=false;
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cancel(i); |
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x.callback(v); |
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} |
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}); |
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}); |
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} |
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return x;
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}; |
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}; |
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_4.select=function(_12,x){ |
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var fs=_6.call(x)=="[object Array]"?x:_5.call(arguments,1); |
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return function(_13){ |
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return new _1().addCallback(_12).addCallback(function(v){ |
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if(typeof v=="number"&&v>=0&&v<fs.length){ |
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return fs[v](_13);
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}else{
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return new Error("async.select: out of range"); |
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} |
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}).callback(_13); |
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}; |
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}; |
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_4.ifThen=function(_14,_15,_16){ |
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return function(_17){ |
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return new _1().addCallback(_14).addCallback(function(v){ |
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return (v?_15:_16)(_17);
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}).callback(_17); |
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}; |
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}; |
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_4.loop=function(_18,_19){ |
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return function(_1a){ |
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var x,y=new _1(function(){ |
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x.cancel(); |
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}); |
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function _1b(v){ |
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y.errback(v); |
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}; |
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function _1c(v){ |
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if(v){
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x.addCallback(_19).addCallback(_1d); |
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}else{
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y.callback(v); |
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} |
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return v;
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}; |
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function _1d(_1e){ |
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x=new _1().addCallback(_18).addCallback(_1c).addErrback(_1b);
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x.callback(_1e); |
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}; |
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_1d(_1a); |
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return y;
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}; |
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}; |
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})(); |
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} |