XHR.js
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/**
* XHR.js
*
* Released under LGPL License.
* Copyright (c) 1999-2015 Ephox Corp. All rights reserved
*
* License: http://www.tinymce.com/license
* Contributing: http://www.tinymce.com/contributing
*/
/**
* This class enables you to send XMLHTTPRequests cross browser.
* @class tinymce.util.XHR
* @mixes tinymce.util.Observable
* @static
* @example
* // Sends a low level Ajax request
* tinymce.util.XHR.send({
* url: 'someurl',
* success: function(text) {
* console.debug(text);
* }
* });
*
* // Add custom header to XHR request
* tinymce.util.XHR.on('beforeSend', function(e) {
* e.xhr.setRequestHeader('X-Requested-With', 'Something');
* });
*/
define("tinymce/util/XHR", [
"tinymce/util/Observable",
"tinymce/util/Tools"
], function(Observable, Tools) {
var XHR = {
/**
* Sends a XMLHTTPRequest.
* Consult the Wiki for details on what settings this method takes.
*
* @method send
* @param {Object} settings Object will target URL, callbacks and other info needed to make the request.
*/
send: function(settings) {
var xhr, count = 0;
function ready() {
if (!settings.async || xhr.readyState == 4 || count++ > 10000) {
if (settings.success && count < 10000 && xhr.status == 200) {
settings.success.call(settings.success_scope, '' + xhr.responseText, xhr, settings);
} else if (settings.error) {
settings.error.call(settings.error_scope, count > 10000 ? 'TIMED_OUT' : 'GENERAL', xhr, settings);
}
xhr = null;
} else {
setTimeout(ready, 10);
}
}
// Default settings
settings.scope = settings.scope || this;
settings.success_scope = settings.success_scope || settings.scope;
settings.error_scope = settings.error_scope || settings.scope;
settings.async = settings.async === false ? false : true;
settings.data = settings.data || '';
XHR.fire('beforeInitialize', {settings: settings});
xhr = new XMLHttpRequest();
if (xhr) {
if (xhr.overrideMimeType) {
xhr.overrideMimeType(settings.content_type);
}
xhr.open(settings.type || (settings.data ? 'POST' : 'GET'), settings.url, settings.async);
if (settings.crossDomain) {
xhr.withCredentials = true;
}
if (settings.content_type) {
xhr.setRequestHeader('Content-Type', settings.content_type);
}
if (settings.requestheaders) {
Tools.each(settings.requestheaders, function(header) {
xhr.setRequestHeader(header.key, header.value);
});
}
xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
xhr = XHR.fire('beforeSend', {xhr: xhr, settings: settings}).xhr;
xhr.send(settings.data);
// Syncronous request
if (!settings.async) {
return ready();
}
// Wait for response, onReadyStateChange can not be used since it leaks memory in IE
setTimeout(ready, 10);
}
}
};
Tools.extend(XHR, Observable);
return XHR;
});