| dojo.provide("dojo.Deferred"); |
| dojo.require("dojo.lang.func"); |
| 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; |
| }; |
| dojo.lang.extend(dojo.Deferred,{getFunctionFromArgs:function(){ |
| var a=arguments; |
| if((a[0])&&(!a[1])){ |
| if(dojo.lang.isFunction(a[0])){ |
| return a[0]; |
| }else{ |
| if(dojo.lang.isString(a[0])){ |
| return dj_global[a[0]]; |
| } |
| } |
| }else{ |
| if((a[0])&&(a[1])){ |
| return dojo.lang.hitch(a[0],a[1]); |
| } |
| } |
| return null; |
| },makeCalled:function(){ |
| var _3=new dojo.Deferred(); |
| _3.callback(); |
| return _3; |
| },repr:function(){ |
| var _4; |
| if(this.fired==-1){ |
| _4="unfired"; |
| }else{ |
| if(this.fired==0){ |
| _4="success"; |
| }else{ |
| _4="error"; |
| } |
| } |
| return "Deferred("+this.id+", "+_4+")"; |
| },toString:dojo.lang.forward("repr"),_nextId:(function(){ |
| var n=1; |
| return function(){ |
| return n++; |
| }; |
| })(),cancel:function(){ |
| if(this.fired==-1){ |
| if(this.canceller){ |
| this.canceller(this); |
| }else{ |
| this.silentlyCancelled=true; |
| } |
| if(this.fired==-1){ |
| this.errback(new Error(this.repr())); |
| } |
| }else{ |
| if((this.fired==0)&&(this.results[0] instanceof dojo.Deferred)){ |
| this.results[0].cancel(); |
| } |
| } |
| },_pause:function(){ |
| this.paused++; |
| },_unpause:function(){ |
| this.paused--; |
| if((this.paused==0)&&(this.fired>=0)){ |
| this._fire(); |
| } |
| },_continue:function(_6){ |
| this._resback(_6); |
| this._unpause(); |
| },_resback:function(_7){ |
| this.fired=((_7 instanceof Error)?1:0); |
| this.results[this.fired]=_7; |
| this._fire(); |
| },_check:function(){ |
| if(this.fired!=-1){ |
| if(!this.silentlyCancelled){ |
| dojo.raise("already called!"); |
| } |
| this.silentlyCancelled=false; |
| return; |
| } |
| },callback:function(_8){ |
| this._check(); |
| this._resback(_8); |
| },errback:function(_9){ |
| this._check(); |
| if(!(_9 instanceof Error)){ |
| _9=new Error(_9); |
| } |
| this._resback(_9); |
| },addBoth:function(cb,_b){ |
| var _c=this.getFunctionFromArgs(cb,_b); |
| if(arguments.length>2){ |
| _c=dojo.lang.curryArguments(null,_c,arguments,2); |
| } |
| return this.addCallbacks(_c,_c); |
| },addCallback:function(cb,_e){ |
| var _f=this.getFunctionFromArgs(cb,_e); |
| if(arguments.length>2){ |
| _f=dojo.lang.curryArguments(null,_f,arguments,2); |
| } |
| return this.addCallbacks(_f,null); |
| },addErrback:function(cb,_11){ |
| var _12=this.getFunctionFromArgs(cb,_11); |
| if(arguments.length>2){ |
| _12=dojo.lang.curryArguments(null,_12,arguments,2); |
| } |
| return this.addCallbacks(null,_12); |
| return this.addCallbacks(null,_11); |
| },addCallbacks:function(cb,eb){ |
| this.chain.push([cb,eb]); |
| if(this.fired>=0){ |
| this._fire(); |
| } |
| return this; |
| },_fire:function(){ |
| var _15=this.chain; |
| var _16=this.fired; |
| var res=this.results[_16]; |
| var _18=this; |
| var cb=null; |
| while(_15.length>0&&this.paused==0){ |
| var _1a=_15.shift(); |
| var f=_1a[_16]; |
| if(f==null){ |
| continue; |
| } |
| try{ |
| res=f(res); |
| _16=((res instanceof Error)?1:0); |
| if(res instanceof dojo.Deferred){ |
| cb=function(res){ |
| _18._continue(res); |
| }; |
| this._pause(); |
| } |
| } |
| catch(err){ |
| _16=1; |
| res=err; |
| } |
| } |
| this.fired=_16; |
| this.results[_16]=res; |
| if((cb)&&(this.paused)){ |
| res.addBoth(cb); |
| } |
| }}); |
