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rails-ie8.domainrequest.js
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rails-ie8.domainrequest.js
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/*!
* ie8.xdomainrequest - v1.00
* Allow Rails support with _method override and Basic-Auth support
* https://github.com/brianlucas/rails-ie8.xdomainrequest
* Copyright (c) 2014 Brian Lucas
* Originally forked from Jason Moon's https://github.com/MoonScript/jQuery-ajaxTransport-XDomainRequest
* Licensed MIT (/blob/master/LICENSE.txt)
*/
(function(factory) {
if (typeof define === 'function' && define.amd) {
// AMD. Register as anonymous module.
define(['jquery'], factory);
} else {
// Browser globals.
factory(jQuery);
}
}(function($) {
// Only continue if we're on IE8/IE9 with jQuery 1.5+ (contains the ajaxTransport function)
if ($.support.cors || !$.ajaxTransport || !window.XDomainRequest) {
return;
}
window.XDomainRequestBusy=false;
var httpRegEx = /^https?:\/\//i;
var getOrPostRegEx = /^get|post$/i;
var sameSchemeRegEx = new RegExp('^'+location.protocol, 'i');
// ajaxTransport exists in jQuery 1.5+
$.ajaxTransport('* text html xml json', function(options, userOptions, jqXHR) {
// Only continue if the request is: asynchronous, uses GET or POST method, has HTTP or HTTPS protocol, and has the same scheme as the calling page
if (!options.crossDomain || !options.async || !httpRegEx.test(options.url) || !sameSchemeRegEx.test(options.url)) {
return;
}
var xdr = null;
return {
send: function(headers, complete) {
var postData = '';
var userType = (userOptions.dataType || '').toLowerCase();
xdr = new XDomainRequest();
if (/^\d+$/.test(userOptions.timeout)) {
xdr.timeout = userOptions.timeout;
}
xdr.ontimeout = function() {
window.XDomainRequestBusy=false;
complete(500, 'timeout');
};
xdr.onload = function() {
window.XDomainRequestBusy=false;
var allResponseHeaders = 'Content-Length: ' + xdr.responseText.length + '\r\nContent-Type: ' + xdr.contentType;
var status = {
code: 200,
message: 'success'
};
var responses = {
responseText: xdr.responseText
};
try {
if (userType === 'html' || /text\/html/i.test(xdr.contentType)) {
responses.html = xdr.responseText;
} else if (userType === 'json' || (userType !== 'text' && /\/json/i.test(xdr.contentType))) {
try {
responses.json = $.parseJSON(xdr.responseText);
} catch(e) {
status.code = 500;
status.message = 'parseerror';
//throw 'Invalid JSON: ' + xdr.responseText;
}
} else if (userType === 'xml' || (userType !== 'text' && /\/xml/i.test(xdr.contentType))) {
var doc = new ActiveXObject('Microsoft.XMLDOM');
doc.async = false;
try {
doc.loadXML(xdr.responseText);
} catch(e) {
doc = undefined;
}
if (!doc || !doc.documentElement || doc.getElementsByTagName('parsererror').length) {
status.code = 500;
status.message = 'parseerror';
throw 'Invalid XML: ' + xdr.responseText;
}
responses.xml = doc;
}
} catch(parseMessage) {
window.XDomainRequestBusy=false;
throw parseMessage;
} finally {
window.XDomainRequestBusy=false;
complete(status.code, status.message, responses, allResponseHeaders);
}
};
// set an empty handler for 'onprogress' so requests don't get aborted
xdr.onprogress = function(){
window.XDomainRequestBusy=true;
};
xdr.onerror = function() {
window.XDomainRequestBusy=false;
complete(0, 'error', {
responseText: xdr.responseText
});
};
if (userOptions.data) {
postData = ($.type(userOptions.data) === 'string') ? userOptions.data : $.param(userOptions.data);
}
var buildUrl = function(base, key, value) {
var sep = (base.indexOf('?') > -1) ? '&' : '?';
return base + sep + key + '=' + value;
}
// The magic where your PUT/DELETE requests are transformed into POST with _method override
if (!getOrPostRegEx.test(options.type) ) {
options.url=buildUrl(options.url, '_method', options.type);
options.type="POST"
}
if (headers.Authorization != undefined) {
options.url=buildUrl(options.url, 'x-authorization', headers.Authorization);
}
if(window.XDomainRequestBusy){
setTimeout(function(){
xdr.open(options.type, options.url);
xdr.send(postData);
},100);
} else {
window.XDomainRequestBusy=true;
xdr.open(options.type, options.url);
xdr.send(postData);
}
},
abort: function() {
if (xdr) {
window.XDomainRequestBusy=false;
xdr.abort();
}
}
};
});
}));