| Current Path : /opt/cpanel/ea-php54/root/usr/share/pear-data/HTML_AJAX/js/ |
| Current File : //opt/cpanel/ea-php54/root/usr/share/pear-data/HTML_AJAX/js/HttpClient.js |
/**
* XMLHttpRequest Wrapper
* @category HTML
* @package AJAX
* @author Joshua Eichorn <josh@bluga.net>
* @copyright 2005 Joshua Eichorn
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
*/
function HTML_AJAX_HttpClient() { }
HTML_AJAX_HttpClient.prototype = {
// request object
request: null,
// timeout id
_timeoutId: null,
callbackComplete: true,
// has this request been aborted
aborted: false,
// method to initialize an xmlhttpclient
init:function()
{
try {
// Mozilla / Safari
//this.xmlhttp = new HTML_AJAX_IframeXHR(); //uncomment these two lines to test iframe
//return;
this.xmlhttp = new XMLHttpRequest();
} catch (e) {
// IE
var XMLHTTP_IDS = new Array(
'MSXML2.XMLHTTP.5.0',
'MSXML2.XMLHTTP.4.0',
'MSXML2.XMLHTTP.3.0',
'MSXML2.XMLHTTP',
'Microsoft.XMLHTTP' );
var success = false;
for (var i=0;i < XMLHTTP_IDS.length && !success; i++) {
try {
this.xmlhttp = new ActiveXObject(XMLHTTP_IDS[i]);
success = true;
} catch (e) {}
}
if (!success) {
try{
this.xmlhttp = new HTML_AJAX_IframeXHR();
this.request.iframe = true;
} catch(e) {
throw new Error('Unable to create XMLHttpRequest.');
}
}
}
},
// check if there is a call in progress
callInProgress: function()
{
switch ( this.xmlhttp.readyState ) {
case 1:
case 2:
case 3:
return true;
break;
default:
return false;
break;
}
},
// make the request defined in the request object
makeRequest: function()
{
if (!this.xmlhttp) {
this.init();
}
try {
if (this.request.Open) {
this.request.Open();
}
else if (HTML_AJAX.Open) {
HTML_AJAX.Open(this.request);
}
if (this.request.multipart) {
if (document.all) {
this.iframe = true;
} else {
this.xmlhttp.multipart = true;
}
}
// set onreadystatechange here since it will be reset after a completed call in Mozilla
var self = this;
this.xmlhttp.open(this.request.requestType,this.request.completeUrl(),this.request.isAsync);
if (this.request.customHeaders) {
for (var i in this.request.customHeaders) {
this.xmlhttp.setRequestHeader(i, this.request.customHeaders[i]);
}
}
if (this.request.customHeaders && !this.request.customHeaders['Content-Type']) {
var content = this.request.getContentType();
var charsetIndex = content.indexOf('; charset=UTF-8');
if (charsetIndex == -1) {
content += '; charset=UTF-8';
}
this.xmlhttp.setRequestHeader('Content-Type', content);
}
if (this.request.isAsync) {
if (this.request.callback) {
this.callbackComplete = false;
}
this.xmlhttp.onreadystatechange = function() { self._readyStateChangeCallback(); }
} else {
this.xmlhttp.onreadystatechange = function() {}
}
var payload = this.request.getSerializedPayload();
if (payload) {
this.xmlhttp.setRequestHeader('Content-Length', payload.length);
}
this.xmlhttp.send(payload);
if (!this.request.isAsync) {
if ( this.xmlhttp.status == 200 ) {
HTML_AJAX.requestComplete(this.request);
if (this.request.Load) {
this.request.Load();
} else if (HTML_AJAX.Load) {
HTML_AJAX.Load(this.request);
}
return this._decodeResponse();
} else {
var e = new Error('['+this.xmlhttp.status +'] '+this.xmlhttp.statusText);
e.headers = this.xmlhttp.getAllResponseHeaders();
this._handleError(e);
}
}
else {
// setup timeout
var self = this;
this._timeoutId = window.setTimeout(function() { self.abort(true); },this.request.timeout);
}
} catch (e) {
this._handleError(e);
}
},
// abort an inprogress request
abort: function (automatic)
{
if (this.callInProgress()) {
this.aborted = true;
this.xmlhttp.abort();
if (automatic) {
HTML_AJAX.requestComplete(this.request);
this._handleError(new Error('Request Timed Out: time out was '+this.request.timeout+'ms'));
}
}
},
// internal method used to handle ready state changes
_readyStateChangeCallback:function()
{
try {
switch(this.xmlhttp.readyState) {
// XMLHTTPRequest.open() has just been called
case 1:
break;
// XMLHTTPRequest.send() has just been called
case 2:
if (this.request.Send) {
this.request.Send();
} else if (HTML_AJAX.Send) {
HTML_AJAX.Send(this.request);
}
break;
// Fetching response from server in progress
case 3:
if (this.request.Progress) {
this.request.Progress();
} else if (HTML_AJAX.Progress ) {
HTML_AJAX.Progress(this.request);
}
break;
// Download complete
case 4:
window.clearTimeout(this._timeoutId);
if (this.aborted) {
if (this.request.Load) {
this.request.Load();
} else if (HTML_AJAX.Load) {
HTML_AJAX.Load(this.request);
}
}
else if (this.xmlhttp.status == 200) {
if (this.request.Load) {
this.request.Load();
} else if (HTML_AJAX.Load ) {
HTML_AJAX.Load(this.request);
}
var response = this._decodeResponse();
if (this.request.callback) {
this.request.callback(response);
this.callbackComplete = true;
}
}
else {
var e = new Error('HTTP Error Making Request: ['+this.xmlhttp.status+'] '+this.xmlhttp.statusText);
this._handleError(e);
}
HTML_AJAX.requestComplete(this.request);
break;
}
} catch (e) {
this._handleError(e);
}
},
// decode response as needed
_decodeResponse: function() {
//try for x-Content-Type first
var content = null;
try {
content = this.xmlhttp.getResponseHeader('X-Content-Type');
} catch(e) {}
if(!content || content == null)
{
content = this.xmlhttp.getResponseHeader('Content-Type');
}
//strip anything after ;
if(content.indexOf(';') != -1)
{
content = content.substring(0, content.indexOf(';'));
}
// hook for xml, it doesn't need to be unserialized
if(content == 'application/xml' || content == 'text/xml')
{
return this.xmlhttp.responseXML;
}
var unserializer = HTML_AJAX.serializerForEncoding(content);
//alert(this.xmlhttp.getAllResponseHeaders()); // some sort of debug hook is needed here
return unserializer.unserialize(this.xmlhttp.responseText);
},
// handle sending an error where it needs to go
_handleError: function(e)
{
HTML_AJAX.requestComplete(this.request,e);
if (this.request.onError) {
this.request.onError(e);
} else if (HTML_AJAX.onError) {
HTML_AJAX.onError(e,this.request);
}
else {
throw e;
}
}
}
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