Update jQuery Iframe Transport Plugin to 1.8.2

Author: futhr

vendor/assets/javascripts/jquery-fileupload/jquery.iframe-transport.js

@@ -1,5 +1,5 @@
 /*
- * jQuery Iframe Transport Plugin 1.6.2
+ * jQuery Iframe Transport Plugin 1.8.2
  * https://github.com/blueimp/jQuery-File-Upload
  *
  * Copyright 2011, Sebastian Tschan
@@ -9,8 +9,7 @@
  * http://www.opensource.org/licenses/MIT
  */
 
-/*jslint unparam: true, nomen: true */
-/*global define, window, document */
+/* global define, window, document */
 
 (function (factory) {
     'use strict';
@@ -27,17 +26,24 @@
     // Helper variable to create unique names for the transport iframes:
     var counter = 0;
 
-    // The iframe transport accepts three additional options:
+    // The iframe transport accepts four additional options:
     // options.fileInput: a jQuery collection of file input fields
     // options.paramName: the parameter name for the file form data,
     //  overrides the name property of the file input field(s),
     //  can be a string or an array of strings.
     // options.formData: an array of objects with name and value properties,
     //  equivalent to the return data of .serializeArray(), e.g.:
     //  [{name: 'a', value: 1}, {name: 'b', value: 2}]
+    // options.initialIframeSrc: the URL of the initial iframe src,
+    //  by default set to "javascript:false;"
     $.ajaxTransport('iframe', function (options) {
         if (options.async) {
-            var form,
+            // javascript:false as initial iframe src
+            // prevents warning popups on HTTPS in IE6:
+            /*jshint scripturl: true */
+            var initialIframeSrc = options.initialIframeSrc || 'javascript:false;',
+            /*jshint scripturl: false */
+                form,
                 iframe,
                 addParamChar;
             return {
@@ -56,15 +62,13 @@
                         options.url = options.url + addParamChar + '_method=PATCH';
                         options.type = 'POST';
                     }
-                    // javascript:false as initial iframe src
-                    // prevents warning popups on HTTPS in IE6.
                     // IE versions below IE8 cannot set the name property of
                     // elements that have already been added to the DOM,
                     // so we set the name along with the iframe HTML markup:
                     counter += 1;
                     iframe = $(
-                        '<iframe src="javascript:false;" name="iframe-transport-' +
-                            counter + '"></iframe>'
+                        '<iframe src="' + initialIframeSrc +
+                            '" name="iframe-transport-' + counter + '"></iframe>'
                     ).bind('load', function () {
                         var fileInputClones,
                             paramNames = $.isArray(options.paramName) ?
@@ -95,7 +99,7 @@
                                 );
                                 // Fix for IE endless progress bar activity bug
                                 // (happens on form submits to iframe targets):
-                                $('<iframe src="javascript:false;"></iframe>')
+                                $('<iframe src="' + initialIframeSrc + '"></iframe>')
                                     .appendTo(form);
                                 window.setTimeout(function () {
                                     // Removing the form in a setTimeout call
@@ -138,14 +142,19 @@
                                 .prop('enctype', 'multipart/form-data')
                                 // enctype must be set as encoding for IE:
                                 .prop('encoding', 'multipart/form-data');
+                            // Remove the HTML5 form attribute from the input(s):
+                            options.fileInput.removeAttr('form');
                         }
                         form.submit();
                         // Insert the file input fields at their original location
                         // by replacing the clones with the originals:
                         if (fileInputClones && fileInputClones.length) {
                             options.fileInput.each(function (index, input) {
                                 var clone = $(fileInputClones[index]);
-                                $(input).prop('name', clone.prop('name'));
+                                // Restore the original name and form properties:
+                                $(input)
+                                    .prop('name', clone.prop('name'))
+                                    .attr('form', clone.attr('form'));
                                 clone.replaceWith(input);
                             });
                         }
@@ -159,7 +168,7 @@
                         // concat is used to avoid the "Script URL" JSLint error:
                         iframe
                             .unbind('load')
-                            .prop('src', 'javascript'.concat(':false;'));
+                            .prop('src', initialIframeSrc);
                     }
                     if (form) {
                         form.remove();
@@ -170,7 +179,15 @@
     });
 
     // The iframe transport returns the iframe content document as response.
-    // The following adds converters from iframe to text, json, html, and script:
+    // The following adds converters from iframe to text, json, html, xml
+    // and script.
+    // Please note that the Content-Type for JSON responses has to be text/plain
+    // or text/html, if the browser doesn't include application/json in the
+    // Accept header, else IE will show a download dialog.
+    // The Content-Type for XML responses on the other hand has to be always
+    // application/xml or text/xml, so IE properly parses the XML response.
+    // See also
+    // https://github.com/blueimp/jQuery-File-Upload/wiki/Setup#content-type-negotiation
     $.ajaxSetup({
         converters: {
             'iframe text': function (iframe) {
@@ -182,6 +199,12 @@
             'iframe html': function (iframe) {
                 return iframe && $(iframe[0].body).html();
             },
+            'iframe xml': function (iframe) {
+                var xmlDoc = iframe && iframe[0];
+                return xmlDoc && $.isXMLDoc(xmlDoc) ? xmlDoc :
+                        $.parseXML((xmlDoc.XMLDocument && xmlDoc.XMLDocument.xml) ||
+                            $(xmlDoc.body).html());
+            },
             'iframe script': function (iframe) {
                 return iframe && $.globalEval($(iframe[0].body).text());
             }