include/javascript/yui3/build/io/io-base.js

   1 /*
   2  Copyright (c) 2009, Yahoo! Inc. All rights reserved.
   3  Code licensed under the BSD License:
   4  http://developer.yahoo.net/yui/license.txt
   5  version: 3.0.0
   6  build: 1549
   7  */
   8 YUI.add('io-base',function(Y){var E_START='io:start',E_COMPLETE='io:complete',E_SUCCESS='io:success',E_FAILURE='io:failure',E_END='io:end',transactionId=0,_headers={'X-Requested-With':'XMLHttpRequest'},_timeout={},w=Y.config.win;function _io(uri,c,i){var f,o,m;c=c||{};o=_create(c.xdr||c.form,i);m=c.method?c.method.toUpperCase():'GET';if(c.form){if(c.form.upload){return Y.io._upload(o,uri,c);}
   9 else{f=Y.io._serialize(c.form,c.data);if(m==='POST'){c.data=f;_setHeader('Content-Type','application/x-www-form-urlencoded');}
  10 else if(m==='GET'){uri=_concat(uri,f);}}}
  11 else if(c.data&&m==='GET'){uri=_concat(uri,c.data);}
  12 if(c.xdr){if(c.xdr.use==='native'&&window.XDomainRequest||c.xdr.use==='flash'){return Y.io.xdr(uri,o,c);}
  13 if(c.xdr.credentials){o.c.withCredentials=true;}}
  14 o.c.onreadystatechange=function(){_readyState(o,c);};try{o.c.open(m,uri,true);}
  15 catch(e0){if(c.xdr){return _resend(o,uri,c);}}
  16 if(c.data&&m==='POST'){_setHeader('Content-Type','application/x-www-form-urlencoded; charset=UTF-8');}
  17 _setHeaders(o.c,c.headers||{});try{o.c.send(c.data||'');}
  18 catch(e1){if(c.xdr){return _resend(o,uri,c);}}
  19 _ioStart(o.id,c);if(c.timeout){_startTimeout(o,c.timeout);}
  20 return{id:o.id,abort:function(){return o.c?_ioCancel(o,'abort'):false;},isInProgress:function(){return o.c?o.c.readyState!==4&&o.c.readyState!==0:false;}}}
  21 function _subscribe(e,c){var evt=new Y.EventTarget().publish('transaction:'+e);evt.subscribe(c.on[e],(c.context||Y),c.arguments);return evt;}
  22 function _ioStart(id,c){var evt;c.on=c.on||{};Y.fire(E_START,id);if(c.on.start){evt=_subscribe('start',c);evt.fire(id);}}
  23 function _ioComplete(o,c){var evt,r=o.status?{status:0,statusText:o.status}:o.c;c.on=c.on||{};Y.fire(E_COMPLETE,o.id,r);if(c.on.complete){evt=_subscribe('complete',c);evt.fire(o.id,r);}}
  24 function _ioSuccess(o,c){var evt;c.on=c.on||{};Y.fire(E_SUCCESS,o.id,o.c);if(c.on.success){evt=_subscribe('success',c);evt.fire(o.id,o.c);}
  25 _ioEnd(o,c);}
  26 function _ioFailure(o,c){var evt,r=o.status?{status:0,statusText:o.status}:o.c;c.on=c.on||{};Y.fire(E_FAILURE,o.id,r);if(c.on.failure){evt=_subscribe('failure',c);evt.fire(o.id,r);}
  27 _ioEnd(o,c);}
  28 function _ioEnd(o,c){var evt;c.on=c.on||{};Y.fire(E_END,o.id);if(c.on.end){evt=_subscribe('end',c);evt.fire(o.id);}
  29 _destroy(o,c.xdr?true:false);}
  30 function _ioCancel(o,s){if(o&&o.c){o.status=s;o.c.abort();}}
  31 function _resend(o,uri,c){var id=parseInt(o.id);_destroy(o);c.xdr.use='flash';return Y.io(uri,c,id);}
  32 function _id(){var id=transactionId;transactionId++;return id;}
  33 function _create(c,i){var o={};o.id=Y.Lang.isNumber(i)?i:_id();c=c||{};if(!c.use&&!c.upload){o.c=_xhr();}
  34 else if(c.use){if(c.use==='flash'){o.c=Y.io._transport[c.use];}
  35 else if(c.use==='native'&&window.XDomainRequest){o.c=new XDomainRequest();}
  36 else{o.c=_xhr();}}
  37 else{o.c={};}
  38 return o;};function _xhr(){return w.XMLHttpRequest?new XMLHttpRequest():new ActiveXObject('Microsoft.XMLHTTP');}
  39 function _concat(s,d){s+=((s.indexOf('?')==-1)?'?':'&')+d;return s;}
  40 function _setHeader(l,v){if(v){_headers[l]=v;}
  41 else{delete _headers[l];}}
  42 function _setHeaders(o,h){var p;for(p in _headers){if(_headers.hasOwnProperty(p)){if(h[p]){break;}
  43 else{h[p]=_headers[p];}}}
  44 for(p in h){if(h.hasOwnProperty(p)){o.setRequestHeader(p,h[p]);}}}
  45 function _startTimeout(o,timeout){_timeout[o.id]=w.setTimeout(function(){_ioCancel(o,'timeout');},timeout);}
  46 function _clearTimeout(id){w.clearTimeout(_timeout[id]);delete _timeout[id];}
  47 function _readyState(o,c){if(o.c.readyState===4){if(c.timeout){_clearTimeout(o.id);}
  48 w.setTimeout(function(){_ioComplete(o,c);_handleResponse(o,c);},0);}}
  49 function _handleResponse(o,c){var status;try{if(o.c.status&&o.c.status!==0){status=o.c.status;}
  50 else{status=0;}}
  51 catch(e){status=0;}
  52 if(status>=200&&status<300||status===1223){_ioSuccess(o,c);}
  53 else{_ioFailure(o,c);}}
  54 function _destroy(o,transport){if(w.XMLHttpRequest&&!transport){if(o.c){o.c.onreadystatechange=null;}}
  55 o.c=null;o=null;}
  56 _io.start=_ioStart;_io.complete=_ioComplete;_io.success=_ioSuccess;_io.failure=_ioFailure;_io.end=_ioEnd;_io._id=_id;_io._timeout=_timeout;_io.header=_setHeader;Y.io=_io;Y.io.http=_io;},'3.0.0',{requires:['event-custom-base']});