3 * Copyright(c) 2006-2010 Ext JS, Inc.
5 * http://www.extjs.com/license
8 * Portions of this file are based on pieces of Yahoo User Interface Library
9 * Copyright (c) 2007, Yahoo! Inc. All rights reserved.
10 * YUI licensed under the BSD License:
11 * http://developer.yahoo.net/yui/license.txt
13 Ext.lib.Ajax = function() {
14 var activeX = ['MSXML2.XMLHTTP.3.0',
17 CONTENTTYPE = 'Content-Type';
20 function setHeader(o) {
24 function setTheHeaders(conn, headers){
25 for (prop in headers) {
26 if (headers.hasOwnProperty(prop)) {
27 conn.setRequestHeader(prop, headers[prop]);
32 if (pub.defaultHeaders) {
33 setTheHeaders(conn, pub.defaultHeaders);
37 setTheHeaders(conn, pub.headers);
43 function createExceptionObject(tId, callbackArg, isAbort, isTimeout) {
46 status : isAbort ? -1 : 0,
47 statusText : isAbort ? 'transaction aborted' : 'communication failure',
50 argument : callbackArg
55 function initHeader(label, value) {
56 (pub.headers = pub.headers || {})[label] = value;
60 function createResponseObject(o, callbackArg) {
66 // see: https://prototype.lighthouseapp.com/projects/8886/tickets/129-ie-mangles-http-response-status-code-204-to-1223
67 isBrokenStatus = conn.status == 1223;
70 headerStr = o.conn.getAllResponseHeaders();
71 Ext.each(headerStr.replace(/\r\n/g, '\n').split('\n'), function(v){
74 s = v.substr(0, t).toLowerCase();
75 if(v.charAt(t + 1) == ' '){
78 headerObj[s] = v.substr(t + 1);
85 // Normalize the status and statusText when IE returns 1223, see the above link.
86 status : isBrokenStatus ? 204 : conn.status,
87 statusText : isBrokenStatus ? 'No Content' : conn.statusText,
88 getResponseHeader : function(header){return headerObj[header.toLowerCase()];},
89 getAllResponseHeaders : function(){return headerStr},
90 responseText : conn.responseText,
91 responseXML : conn.responseXML,
92 argument : callbackArg
97 function releaseObject(o) {
99 pub.conn[o.tId] = null;
106 function handleTransactionResponse(o, callback, isAbort, isTimeout) {
112 var httpStatus, responseObject;
115 if (o.conn.status !== undefined && o.conn.status != 0) {
116 httpStatus = o.conn.status;
126 if ((httpStatus >= 200 && httpStatus < 300) || (Ext.isIE && httpStatus == 1223)) {
127 responseObject = createResponseObject(o, callback.argument);
128 if (callback.success) {
129 if (!callback.scope) {
130 callback.success(responseObject);
133 callback.success.apply(callback.scope, [responseObject]);
138 switch (httpStatus) {
145 responseObject = createExceptionObject(o.tId, callback.argument, (isAbort ? isAbort : false), isTimeout);
146 if (callback.failure) {
147 if (!callback.scope) {
148 callback.failure(responseObject);
151 callback.failure.apply(callback.scope, [responseObject]);
156 responseObject = createResponseObject(o, callback.argument);
157 if (callback.failure) {
158 if (!callback.scope) {
159 callback.failure(responseObject);
162 callback.failure.apply(callback.scope, [responseObject]);
169 responseObject = null;
173 function handleReadyState(o, callback){
174 callback = callback || {};
178 cbTimeout = callback.timeout || null;
181 pub.conn[tId] = conn;
182 pub.timeout[tId] = setTimeout(function() {
183 pub.abort(o, callback, true);
187 poll[tId] = setInterval(
189 if (conn && conn.readyState == 4) {
190 clearInterval(poll[tId]);
194 clearTimeout(pub.timeout[tId]);
195 pub.timeout[tId] = null;
198 handleTransactionResponse(o, callback);
205 function asyncRequest(method, uri, callback, postData) {
206 var o = getConnectionObject() || null;
209 o.conn.open(method, uri, true);
211 if (pub.useDefaultXhrHeader) {
212 initHeader('X-Requested-With', pub.defaultXhrHeader);
215 if(postData && pub.useDefaultHeader && (!pub.headers || !pub.headers[CONTENTTYPE])){
216 initHeader(CONTENTTYPE, pub.defaultPostHeader);
219 if (pub.defaultHeaders || pub.headers) {
223 handleReadyState(o, callback);
224 o.conn.send(postData || null);
230 function getConnectionObject() {
234 if (o = createXhrObject(pub.transactionId)) {
244 function createXhrObject(transactionId) {
248 http = new XMLHttpRequest();
250 for (var i = 0; i < activeX.length; ++i) {
252 http = new ActiveXObject(activeX[i]);
257 return {conn : http, tId : transactionId};
262 request : function(method, uri, cb, data, options) {
265 xmlData = options.xmlData,
266 jsonData = options.jsonData,
269 Ext.applyIf(me, options);
271 if(xmlData || jsonData){
273 if(!hs || !hs[CONTENTTYPE]){
274 initHeader(CONTENTTYPE, xmlData ? 'text/xml' : 'application/json');
276 data = xmlData || (!Ext.isPrimitive(jsonData) ? Ext.encode(jsonData) : jsonData);
279 return asyncRequest(method || options.method || "POST", uri, cb, data);
282 serializeForm : function(form) {
283 var fElements = form.elements || (document.forms[form] || Ext.getDom(form)).elements,
285 encoder = encodeURIComponent,
293 Ext.each(fElements, function(element) {
297 if (!element.disabled && name){
298 if(/select-(one|multiple)/i.test(type)) {
299 Ext.each(element.options, function(opt) {
301 data += String.format("{0}={1}&", encoder(name), encoder((opt.hasAttribute ? opt.hasAttribute('value') : opt.getAttribute('value') !== null) ? opt.value : opt.text));
304 } else if(!/file|undefined|reset|button/i.test(type)) {
305 if(!(/radio|checkbox/i.test(type) && !element.checked) && !(type == 'submit' && hasSubmit)){
307 data += encoder(name) + '=' + encoder(element.value) + '&';
308 hasSubmit = /submit/i.test(type);
313 return data.substr(0, data.length - 1);
316 useDefaultHeader : true,
317 defaultPostHeader : 'application/x-www-form-urlencoded; charset=UTF-8',
318 useDefaultXhrHeader : true,
319 defaultXhrHeader : 'XMLHttpRequest',
326 // This is never called - Is it worth exposing this?
327 // setProgId : function(id) {
328 // activeX.unshift(id);
331 // This is never called - Is it worth exposing this?
332 // setDefaultPostHeader : function(b) {
333 // this.useDefaultHeader = b;
336 // This is never called - Is it worth exposing this?
337 // setDefaultXhrHeader : function(b) {
338 // this.useDefaultXhrHeader = b;
341 // This is never called - Is it worth exposing this?
342 // setPollingInterval : function(i) {
343 // if (typeof i == 'number' && isFinite(i)) {
344 // this.pollInterval = i;
348 // This is never called - Is it worth exposing this?
349 // resetDefaultHeaders : function() {
350 // this.defaultHeaders = null;
353 abort : function(o, callback, isTimeout) {
358 if (me.isCallInProgress(o)) {
360 clearInterval(me.poll[tId]);
362 clearTimeout(pub.timeout[tId]);
363 me.timeout[tId] = null;
365 handleTransactionResponse(o, callback, (isAbort = true), isTimeout);
370 isCallInProgress : function(o) {
371 // if there is a connection and readyState is not 0 or 4
372 return o.conn && !{0:true,4:true}[o.conn.readyState];