| /* |
| Copyright (c) 2004-2009, The Dojo Foundation All Rights Reserved. |
| Available via Academic Free License >= 2.1 OR the modified BSD license. |
| see: http://dojotoolkit.org/license for details |
| */ |
| |
| |
| if(!dojo._hasResource["dojo._base.Deferred"]){ |
| dojo._hasResource["dojo._base.Deferred"]=true; |
| dojo.provide("dojo._base.Deferred"); |
| dojo.require("dojo._base.lang"); |
| dojo.Deferred=function(_1){ |
| this.chain=[]; |
| this.id=this._nextId(); |
| this.fired=-1; |
| this.paused=0; |
| this.results=[null,null]; |
| this.canceller=_1; |
| this.silentlyCancelled=false; |
| this.isFiring=false; |
| }; |
| dojo.extend(dojo.Deferred,{_nextId:(function(){ |
| var n=1; |
| return function(){ |
| return n++; |
| }; |
| })(),cancel:function(){ |
| var _2; |
| if(this.fired==-1){ |
| if(this.canceller){ |
| _2=this.canceller(this); |
| }else{ |
| this.silentlyCancelled=true; |
| } |
| if(this.fired==-1){ |
| if(!(_2 instanceof Error)){ |
| var _3=_2; |
| var _4="Deferred Cancelled"; |
| if(_2&&_2.toString){ |
| _4+=": "+_2.toString(); |
| } |
| _2=new Error(_4); |
| _2.dojoType="cancel"; |
| _2.cancelResult=_3; |
| } |
| this.errback(_2); |
| } |
| }else{ |
| if((this.fired==0)&&(this.results[0] instanceof dojo.Deferred)){ |
| this.results[0].cancel(); |
| } |
| } |
| },_resback:function(_5){ |
| this.fired=((_5 instanceof Error)?1:0); |
| this.results[this.fired]=_5; |
| this._fire(); |
| },_check:function(){ |
| if(this.fired!=-1){ |
| if(!this.silentlyCancelled){ |
| throw new Error("already called!"); |
| } |
| this.silentlyCancelled=false; |
| return; |
| } |
| },callback:function(_6){ |
| this._check(); |
| this._resback(_6); |
| },errback:function(_7){ |
| this._check(); |
| if(!(_7 instanceof Error)){ |
| _7=new Error(_7); |
| } |
| this._resback(_7); |
| },addBoth:function(cb,_8){ |
| var _9=dojo.hitch.apply(dojo,arguments); |
| return this.addCallbacks(_9,_9); |
| },addCallback:function(cb,_a){ |
| return this.addCallbacks(dojo.hitch.apply(dojo,arguments)); |
| },addErrback:function(cb,_b){ |
| return this.addCallbacks(null,dojo.hitch.apply(dojo,arguments)); |
| },addCallbacks:function(cb,eb){ |
| this.chain.push([cb,eb]); |
| if(this.fired>=0&&!this.isFiring){ |
| this._fire(); |
| } |
| return this; |
| },_fire:function(){ |
| this.isFiring=true; |
| var _c=this.chain; |
| var _d=this.fired; |
| var _e=this.results[_d]; |
| var _f=this; |
| var cb=null; |
| while((_c.length>0)&&(this.paused==0)){ |
| var f=_c.shift()[_d]; |
| if(!f){ |
| continue; |
| } |
| var _10=function(){ |
| var ret=f(_e); |
| if(typeof ret!="undefined"){ |
| _e=ret; |
| } |
| _d=((_e instanceof Error)?1:0); |
| if(_e instanceof dojo.Deferred){ |
| cb=function(res){ |
| _f._resback(res); |
| _f.paused--; |
| if((_f.paused==0)&&(_f.fired>=0)){ |
| _f._fire(); |
| } |
| }; |
| this.paused++; |
| } |
| }; |
| if(dojo.config.debugAtAllCosts){ |
| _10.call(this); |
| }else{ |
| try{ |
| _10.call(this); |
| } |
| catch(err){ |
| _d=1; |
| _e=err; |
| } |
| } |
| } |
| this.fired=_d; |
| this.results[_d]=_e; |
| this.isFiring=false; |
| if((cb)&&(this.paused)){ |
| _e.addBoth(cb); |
| } |
| }}); |
| } |
