Andrej Cimperšek - diploma

/*

        Copyright (c) 2004-2010, 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["dojox.cometd.timesync"]){

dojo._hasResource["dojox.cometd.timesync"]=true;

dojo.provide("dojox.cometd.timesync");

dojo.require("dojox.cometd._base");

dojox.cometd.timesync=new function(){

this._window=10;

this._lags=[];

this._offsets=[];

this.lag=0;

this.offset=0;

this.samples=0;

this.getServerTime=function(){

return new Date().getTime()+this.offset;

};

this.getServerDate=function(){

return new Date(this.getServerTime());

};

this.setTimeout=function(_1,_2){

var ts=(_2 instanceof Date)?_2.getTime():(0+_2);

var tc=ts-this.offset;

var _3=tc-new Date().getTime();

if(_3<=0){

_3=1;

}

return setTimeout(_1,_3);

};

this._in=function(_4){

var _5=_4.channel;

if(_5&&_5.indexOf("/meta/")==0){

if(_4.ext&&_4.ext.timesync){

var _6=_4.ext.timesync;

var _7=new Date().getTime();

var l=(_7-_6.tc-_6.p)/2-_6.a;

var o=_6.ts-_6.tc-l;

this._lags.push(l);

this._offsets.push(o);

if(this._offsets.length>this._window){

this._offsets.shift();

this._lags.shift();

}

this.samples++;

l=0;

o=0;

for(var i in this._offsets){

l+=this._lags[i];

o+=this._offsets[i];

}

this.offset=parseInt((o/this._offsets.length).toFixed());

this.lag=parseInt((l/this._lags.length).toFixed());

}

}

return _4;

};

this._out=function(_8){

var _9=_8.channel;

if(_9&&_9.indexOf("/meta/")==0){

var _a=new Date().getTime();

if(!_8.ext){

_8.ext={};

}

_8.ext.timesync={tc:_a,l:this.lag,o:this.offset};

}

return _8;

};

};

dojox.cometd._extendInList.push(dojo.hitch(dojox.cometd.timesync,"_in"));

dojox.cometd._extendOutList.push(dojo.hitch(dojox.cometd.timesync,"_out"));

}