| blob | 7d44fbac290b45f086da9920b1f43c77cbbb9c4b |
1 /*
2 Copyright (c) 2006, Yahoo! Inc. All rights reserved.
3 Code licensed under the BSD License:
4 http://developer.yahoo.net/yui/license.txt
5 version: 0.12.2
6 */
7 YAHOO.util.Connect={_msxml_progid:['MSXML2.XMLHTTP.3.0','MSXML2.XMLHTTP','Microsoft.XMLHTTP'],_http_header:{},_has_http_headers:false,_use_default_post_header:true,_default_post_header:'application/x-www-form-urlencoded',_isFormSubmit:false,_isFileUpload:false,_formNode:null,_sFormData:null,_poll:{},_timeOut:{},_polling_interval:50,_transaction_id:0,setProgId:function(id)
8 {this._msxml_progid.unshift(id);},setDefaultPostHeader:function(b)
9 {this._use_default_post_header=b;},setPollingInterval:function(i)
10 {if(typeof i=='number'&&isFinite(i)){this._polling_interval=i;}},createXhrObject:function(transactionId)
11 {var obj,http;try
12 {http=new XMLHttpRequest();obj={conn:http,tId:transactionId};}
13 catch(e)
14 {for(var i=0;i<this._msxml_progid.length;++i){try
15 {http=new ActiveXObject(this._msxml_progid[i]);obj={conn:http,tId:transactionId};break;}
16 catch(e){}}}
17 finally
18 {return obj;}},getConnectionObject:function()
19 {var o;var tId=this._transaction_id;try
20 {o=this.createXhrObject(tId);if(o){this._transaction_id++;}}
21 catch(e){}
22 finally
23 {return o;}},asyncRequest:function(method,uri,callback,postData)
24 {var o=this.getConnectionObject();if(!o){return null;}
25 else{if(this._isFormSubmit){if(this._isFileUpload){this.uploadFile(o.tId,callback,uri,postData);this.releaseObject(o);return;}
26 if(method=='GET'){if(this._sFormData.length!=0){uri+=((uri.indexOf('?')==-1)?'?':'&')+this._sFormData;}
27 else{uri+="?"+this._sFormData;}}
28 else if(method=='POST'){postData=postData?this._sFormData+"&"+postData:this._sFormData;}}
29 o.conn.open(method,uri,true);if(this._isFormSubmit||(postData&&this._use_default_post_header)){this.initHeader('Content-Type',this._default_post_header);if(this._isFormSubmit){this.resetFormState();}}
30 if(this._has_http_headers){this.setHeader(o);}
31 this.handleReadyState(o,callback);o.conn.send(postData||null);return o;}},handleReadyState:function(o,callback)
32 {var oConn=this;if(callback&&callback.timeout){this._timeOut[o.tId]=window.setTimeout(function(){oConn.abort(o,callback,true);},callback.timeout);}
33 this._poll[o.tId]=window.setInterval(function(){if(o.conn&&o.conn.readyState==4){window.clearInterval(oConn._poll[o.tId]);delete oConn._poll[o.tId];if(callback&&callback.timeout){delete oConn._timeOut[o.tId];}
34 oConn.handleTransactionResponse(o,callback);}},this._polling_interval);},handleTransactionResponse:function(o,callback,isAbort)
35 {if(!callback){this.releaseObject(o);return;}
36 var httpStatus,responseObject;try
37 {if(o.conn.status!==undefined&&o.conn.status!=0){httpStatus=o.conn.status;}
38 else{httpStatus=13030;}}
39 catch(e){httpStatus=13030;}
40 if(httpStatus>=200&&httpStatus<300){try
41 {responseObject=this.createResponseObject(o,callback.argument);if(callback.success){if(!callback.scope){callback.success(responseObject);}
42 else{callback.success.apply(callback.scope,[responseObject]);}}}
43 catch(e){}}
44 else{try
45 {switch(httpStatus){case 12002:case 12029:case 12030:case 12031:case 12152:case 13030:responseObject=this.createExceptionObject(o.tId,callback.argument,(isAbort?isAbort:false));if(callback.failure){if(!callback.scope){callback.failure(responseObject);}
46 else{callback.failure.apply(callback.scope,[responseObject]);}}
47 break;default:responseObject=this.createResponseObject(o,callback.argument);if(callback.failure){if(!callback.scope){callback.failure(responseObject);}
48 else{callback.failure.apply(callback.scope,[responseObject]);}}}}
49 catch(e){}}
50 this.releaseObject(o);responseObject=null;},createResponseObject:function(o,callbackArg)
51 {var obj={};var headerObj={};try
52 {var headerStr=o.conn.getAllResponseHeaders();var header=headerStr.split('\n');for(var i=0;i<header.length;i++){var delimitPos=header[i].indexOf(':');if(delimitPos!=-1){headerObj[header[i].substring(0,delimitPos)]=header[i].substring(delimitPos+2);}}}
53 catch(e){}
54 obj.tId=o.tId;obj.status=o.conn.status;obj.statusText=o.conn.statusText;obj.getResponseHeader=headerObj;obj.getAllResponseHeaders=headerStr;obj.responseText=o.conn.responseText;obj.responseXML=o.conn.responseXML;if(typeof callbackArg!==undefined){obj.argument=callbackArg;}
55 return obj;},createExceptionObject:function(tId,callbackArg,isAbort)
56 {var COMM_CODE=0;var COMM_ERROR='communication failure';var ABORT_CODE=-1;var ABORT_ERROR='transaction aborted';var obj={};obj.tId=tId;if(isAbort){obj.status=ABORT_CODE;obj.statusText=ABORT_ERROR;}
57 else{obj.status=COMM_CODE;obj.statusText=COMM_ERROR;}
58 if(callbackArg){obj.argument=callbackArg;}
59 return obj;},initHeader:function(label,value)
60 {if(this._http_header[label]===undefined){this._http_header[label]=value;}
61 else{this._http_header[label]=value+","+this._http_header[label];}
62 this._has_http_headers=true;},setHeader:function(o)
63 {for(var prop in this._http_header){if(this._http_header.hasOwnProperty(prop)){o.conn.setRequestHeader(prop,this._http_header[prop]);}}
64 delete this._http_header;this._http_header={};this._has_http_headers=false;},setForm:function(formId,isUpload,secureUri)
65 {this.resetFormState();var oForm;if(typeof formId=='string'){oForm=(document.getElementById(formId)||document.forms[formId]);}
66 else if(typeof formId=='object'){oForm=formId;}
67 else{return;}
68 if(isUpload){this.createFrame(secureUri?secureUri:null);this._isFormSubmit=true;this._isFileUpload=true;this._formNode=oForm;return;}
69 var oElement,oName,oValue,oDisabled;var hasSubmit=false;for(var i=0;i<oForm.elements.length;i++){oElement=oForm.elements[i];oDisabled=oForm.elements[i].disabled;oName=oForm.elements[i].name;oValue=oForm.elements[i].value;if(!oDisabled&&oName)
70 {switch(oElement.type)
71 {case'select-one':case'select-multiple':for(var j=0;j<oElement.options.length;j++){if(oElement.options[j].selected){if(window.ActiveXObject){this._sFormData+=encodeURIComponent(oName)+'='+encodeURIComponent(oElement.options[j].attributes['value'].specified?oElement.options[j].value:oElement.options[j].text)+'&';}
72 else{this._sFormData+=encodeURIComponent(oName)+'='+encodeURIComponent(oElement.options[j].hasAttribute('value')?oElement.options[j].value:oElement.options[j].text)+'&';}}}
73 break;case'radio':case'checkbox':if(oElement.checked){this._sFormData+=encodeURIComponent(oName)+'='+encodeURIComponent(oValue)+'&';}
74 break;case'file':case undefined:case'reset':case'button':break;case'submit':if(hasSubmit==false){this._sFormData+=encodeURIComponent(oName)+'='+encodeURIComponent(oValue)+'&';hasSubmit=true;}
75 break;default:this._sFormData+=encodeURIComponent(oName)+'='+encodeURIComponent(oValue)+'&';break;}}}
76 this._isFormSubmit=true;this._sFormData=this._sFormData.substr(0,this._sFormData.length-1);return this._sFormData;},resetFormState:function(){this._isFormSubmit=false;this._isFileUpload=false;this._formNode=null;this._sFormData="";},createFrame:function(secureUri){var frameId='yuiIO'+this._transaction_id;if(window.ActiveXObject){var io=document.createElement('<iframe id="'+frameId+'" name="'+frameId+'" />');if(typeof secureUri=='boolean'){io.src='javascript:false';}
77 else if(typeof secureURI=='string'){io.src=secureUri;}}
78 else{var io=document.createElement('iframe');io.id=frameId;io.name=frameId;}
79 io.style.position='absolute';io.style.top='-1000px';io.style.left='-1000px';document.body.appendChild(io);},appendPostData:function(postData)
80 {var formElements=[];var postMessage=postData.split('&');for(var i=0;i<postMessage.length;i++){var delimitPos=postMessage[i].indexOf('=');if(delimitPos!=-1){formElements[i]=document.createElement('input');formElements[i].type='hidden';formElements[i].name=postMessage[i].substring(0,delimitPos);formElements[i].value=postMessage[i].substring(delimitPos+1);this._formNode.appendChild(formElements[i]);}}
81 return formElements;},uploadFile:function(id,callback,uri,postData){var frameId='yuiIO'+id;var io=document.getElementById(frameId);this._formNode.action=uri;this._formNode.method='POST';this._formNode.target=frameId;if(this._formNode.encoding){this._formNode.encoding='multipart/form-data';}
82 else{this._formNode.enctype='multipart/form-data';}
83 if(postData){var oElements=this.appendPostData(postData);}
84 this._formNode.submit();if(oElements&&oElements.length>0){try
85 {for(var i=0;i<oElements.length;i++){this._formNode.removeChild(oElements[i]);}}
86 catch(e){}}
87 this.resetFormState();var uploadCallback=function()
88 {var obj={};obj.tId=id;obj.argument=callback.argument;try
89 {obj.responseText=io.contentWindow.document.body?io.contentWindow.document.body.innerHTML:null;obj.responseXML=io.contentWindow.document.XMLDocument?io.contentWindow.document.XMLDocument:io.contentWindow.document;}
90 catch(e){}
91 if(callback.upload){if(!callback.scope){callback.upload(obj);}
92 else{callback.upload.apply(callback.scope,[obj]);}}
93 if(YAHOO.util.Event){YAHOO.util.Event.removeListener(io,"load",uploadCallback);}
94 else if(window.detachEvent){io.detachEvent('onload',uploadCallback);}
95 else{io.removeEventListener('load',uploadCallback,false);}
96 setTimeout(function(){document.body.removeChild(io);},100);};if(YAHOO.util.Event){YAHOO.util.Event.addListener(io,"load",uploadCallback);}
97 else if(window.attachEvent){io.attachEvent('onload',uploadCallback);}
98 else{io.addEventListener('load',uploadCallback,false);}},abort:function(o,callback,isTimeout)
99 {if(this.isCallInProgress(o)){o.conn.abort();window.clearInterval(this._poll[o.tId]);delete this._poll[o.tId];if(isTimeout){delete this._timeOut[o.tId];}
100 this.handleTransactionResponse(o,callback,true);return true;}
101 else{return false;}},isCallInProgress:function(o)
102 {if(o.conn){return o.conn.readyState!=4&&o.conn.readyState!=0;}
103 else{return false;}},releaseObject:function(o)
104 {o.conn=null;o=null;}};