3 <title>The source code</title>
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4 <link href="../resources/prettify/prettify.css" type="text/css" rel="stylesheet" />
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5 <script type="text/javascript" src="../resources/prettify/prettify.js"></script>
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7 <body onload="prettyPrint();">
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8 <pre class="prettyprint lang-js">/*
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9 * Portions of this file are based on pieces of Yahoo User Interface Library
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10 * Copyright (c) 2007, Yahoo! Inc. All rights reserved.
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11 * YUI licensed under the BSD License:
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12 * http://developer.yahoo.net/yui/license.txt
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14 Ext.lib.Ajax = function() {
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15 var activeX = ['MSXML2.XMLHTTP.3.0',
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17 'Microsoft.XMLHTTP'],
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18 CONTENTTYPE = 'Content-Type';
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21 function setHeader(o) {
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25 function setTheHeaders(conn, headers){
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26 for (prop in headers) {
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27 if (headers.hasOwnProperty(prop)) {
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28 conn.setRequestHeader(prop, headers[prop]);
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33 if (pub.defaultHeaders) {
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34 setTheHeaders(conn, pub.defaultHeaders);
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38 setTheHeaders(conn, pub.headers);
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39 pub.headers = null;
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44 function createExceptionObject(tId, callbackArg, isAbort, isTimeout) {
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47 status : isAbort ? -1 : 0,
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48 statusText : isAbort ? 'transaction aborted' : 'communication failure',
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51 argument : callbackArg
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56 function initHeader(label, value) {
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57 (pub.headers = pub.headers || {})[label] = value;
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61 function createResponseObject(o, callbackArg) {
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69 headerStr = o.conn.getAllResponseHeaders();
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70 Ext.each(headerStr.replace(/\r\n/g, '\n').split('\n'), function(v){
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73 s = v.substr(0, t).toLowerCase();
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74 if(v.charAt(t + 1) == ' '){
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77 headerObj[s] = v.substr(t + 1);
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84 status : conn.status,
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85 statusText : conn.statusText,
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86 getResponseHeader : function(header){return headerObj[header.toLowerCase()];},
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87 getAllResponseHeaders : function(){return headerStr},
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88 responseText : conn.responseText,
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89 responseXML : conn.responseXML,
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90 argument : callbackArg
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95 function releaseObject(o) {
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101 function handleTransactionResponse(o, callback, isAbort, isTimeout) {
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107 var httpStatus, responseObject;
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110 if (o.conn.status !== undefined && o.conn.status != 0) {
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111 httpStatus = o.conn.status;
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114 httpStatus = 13030;
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118 httpStatus = 13030;
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121 if ((httpStatus >= 200 && httpStatus < 300) || (Ext.isIE && httpStatus == 1223)) {
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122 responseObject = createResponseObject(o, callback.argument);
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123 if (callback.success) {
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124 if (!callback.scope) {
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125 callback.success(responseObject);
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128 callback.success.apply(callback.scope, [responseObject]);
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133 switch (httpStatus) {
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140 responseObject = createExceptionObject(o.tId, callback.argument, (isAbort ? isAbort : false), isTimeout);
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141 if (callback.failure) {
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142 if (!callback.scope) {
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143 callback.failure(responseObject);
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146 callback.failure.apply(callback.scope, [responseObject]);
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151 responseObject = createResponseObject(o, callback.argument);
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152 if (callback.failure) {
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153 if (!callback.scope) {
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154 callback.failure(responseObject);
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157 callback.failure.apply(callback.scope, [responseObject]);
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164 responseObject = null;
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168 function handleReadyState(o, callback){
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169 callback = callback || {};
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173 cbTimeout = callback.timeout || null;
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176 pub.timeout[tId] = setTimeout(function() {
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177 pub.abort(o, callback, true);
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181 poll[tId] = setInterval(
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183 if (conn && conn.readyState == 4) {
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184 clearInterval(poll[tId]);
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188 clearTimeout(pub.timeout[tId]);
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189 pub.timeout[tId] = null;
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192 handleTransactionResponse(o, callback);
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199 function asyncRequest(method, uri, callback, postData) {
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200 var o = getConnectionObject() || null;
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203 o.conn.open(method, uri, true);
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205 if (pub.useDefaultXhrHeader) {
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206 initHeader('X-Requested-With', pub.defaultXhrHeader);
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209 if(postData && pub.useDefaultHeader && (!pub.headers || !pub.headers[CONTENTTYPE])){
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210 initHeader(CONTENTTYPE, pub.defaultPostHeader);
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213 if (pub.defaultHeaders || pub.headers) {
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217 handleReadyState(o, callback);
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218 o.conn.send(postData || null);
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224 function getConnectionObject() {
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228 if (o = createXhrObject(pub.transactionId)) {
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229 pub.transactionId++;
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238 function createXhrObject(transactionId) {
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242 http = new XMLHttpRequest();
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244 for (var i = 0; i < activeX.length; ++i) {
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246 http = new ActiveXObject(activeX[i]);
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251 return {conn : http, tId : transactionId};
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256 request : function(method, uri, cb, data, options) {
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259 xmlData = options.xmlData,
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260 jsonData = options.jsonData,
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263 Ext.applyIf(me, options);
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265 if(xmlData || jsonData){
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267 if(!hs || !hs[CONTENTTYPE]){
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268 initHeader(CONTENTTYPE, xmlData ? 'text/xml' : 'application/json');
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270 data = xmlData || (Ext.isObject(jsonData) ? Ext.encode(jsonData) : jsonData);
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273 return asyncRequest(method || options.method || "POST", uri, cb, data);
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276 serializeForm : function(form) {
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277 var fElements = form.elements || (document.forms[form] || Ext.getDom(form)).elements,
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279 encoder = encodeURIComponent,
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287 Ext.each(fElements, function(element) {
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288 name = element.name;
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289 type = element.type;
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291 if (!element.disabled && name){
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292 if(/select-(one|multiple)/i.test(type)){
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293 Ext.each(element.options, function(opt) {
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294 if (opt.selected) {
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295 data += String.format("{0}={1}&",
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297 (opt.hasAttribute ? opt.hasAttribute('value') : opt.getAttributeNode('value').specified) ? opt.value : opt.text);
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300 } else if(!/file|undefined|reset|button/i.test(type)) {
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301 if(!(/radio|checkbox/i.test(type) && !element.checked) && !(type == 'submit' && hasSubmit)){
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303 data += encoder(name) + '=' + encoder(element.value) + '&';
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304 hasSubmit = /submit/i.test(type);
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309 return data.substr(0, data.length - 1);
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312 useDefaultHeader : true,
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313 defaultPostHeader : 'application/x-www-form-urlencoded; charset=UTF-8',
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314 useDefaultXhrHeader : true,
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315 defaultXhrHeader : 'XMLHttpRequest',
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321 // This is never called - Is it worth exposing this?
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322 // setProgId : function(id) {
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323 // activeX.unshift(id);
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326 // This is never called - Is it worth exposing this?
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327 // setDefaultPostHeader : function(b) {
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328 // this.useDefaultHeader = b;
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331 // This is never called - Is it worth exposing this?
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332 // setDefaultXhrHeader : function(b) {
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333 // this.useDefaultXhrHeader = b;
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336 // This is never called - Is it worth exposing this?
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337 // setPollingInterval : function(i) {
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338 // if (typeof i == 'number' && isFinite(i)) {
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339 // this.pollInterval = i;
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343 // This is never called - Is it worth exposing this?
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344 // resetDefaultHeaders : function() {
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345 // this.defaultHeaders = null;
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348 abort : function(o, callback, isTimeout) {
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353 if (me.isCallInProgress(o)) {
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355 clearInterval(me.poll[tId]);
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356 me.poll[tId] = null;
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358 me.timeout[tId] = null;
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361 handleTransactionResponse(o, callback, (isAbort = true), isTimeout);
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366 isCallInProgress : function(o) {
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367 // if there is a connection and readyState is not 0 or 4
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368 return o.conn && !{0:true,4:true}[o.conn.readyState];
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