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/*
* jQuery Iframe Transport Plugin 10.2.0
* https://github.com/blueimp/jQuery-File-Upload
*
* Copyright 2011, Sebastian Tschan
* https://blueimp.net
*
* Licensed under the MIT license:
* https://opensource.org/licenses/MIT
*/
/* global define, require */
(function(factory) {
'use strict';
if (typeof define === 'function' && define.amd) {
// Register as an anonymous AMD module:
define(['jquery'], factory);
} else if (typeof exports === 'object') {
// Node/CommonJS:
factory(require('jquery'));
} else {
// Browser globals:
factory(window.jQuery);
}
})(function($) {
'use strict';
// Helper variable to create unique names for the transport iframes:
var counter = 0,
jsonAPI = $,
jsonParse = 'parseJSON';
if ('JSON' in window && 'parse' in JSON) {
jsonAPI = JSON;
jsonParse = 'parse';
}
// 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) {
// javascript:false as initial iframe src
// prevents warning popups on HTTPS in IE6:
// eslint-disable-next-line no-script-url
var initialIframeSrc = options.initialIframeSrc || 'javascript:false;',
form,
iframe,
addParamChar;
return {
send: function(_, completeCallback) {
form = $('');
form.attr('accept-charset', options.formAcceptCharset);
addParamChar = /\?/.test(options.url) ? '&' : '?';
// XDomainRequest only supports GET and POST:
if (options.type === 'DELETE') {
options.url = options.url + addParamChar + '_method=DELETE';
options.type = 'POST';
} else if (options.type === 'PUT') {
options.url = options.url + addParamChar + '_method=PUT';
options.type = 'POST';
} else if (options.type === 'PATCH') {
options.url = options.url + addParamChar + '_method=PATCH';
options.type = 'POST';
}
// 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 = $(
''
).on('load', function() {
var fileInputClones,
paramNames = Array.isArray(options.paramName)
? options.paramName
: [options.paramName];
iframe.off('load').on('load', function() {
var response;
// Wrap in a try/catch block to catch exceptions thrown
// when trying to access cross-domain iframe contents:
try {
response = iframe.contents();
// Google Chrome and Firefox do not throw an
// exception when calling iframe.contents() on
// cross-domain requests, so we unify the response:
if (!response.length || !response[0].firstChild) {
throw new Error();
}
} catch (e) {
response = undefined;
}
// The complete callback returns the
// iframe content document as response object:
completeCallback(200, 'success', { iframe: response });
// Fix for IE endless progress bar activity bug
// (happens on form submits to iframe targets):
$('').appendTo(
form
);
window.setTimeout(function() {
// Removing the form in a setTimeout call
// allows Chrome's developer tools to display
// the response result
form.remove();
}, 0);
});
form
.prop('target', iframe.prop('name'))
.prop('action', options.url)
.prop('method', options.type);
if (options.formData) {
$.each(options.formData, function(index, field) {
$('')
.prop('name', field.name)
.val(field.value)
.appendTo(form);
});
}
if (
options.fileInput &&
options.fileInput.length &&
options.type === 'POST'
) {
fileInputClones = options.fileInput.clone();
// Insert a clone for each file input field:
options.fileInput.after(function(index) {
return fileInputClones[index];
});
if (options.paramName) {
options.fileInput.each(function(index) {
$(this).prop('name', paramNames[index] || options.paramName);
});
}
// Appending the file input fields to the hidden form
// removes them from their original location:
form
.append(options.fileInput)
.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.trigger('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]);
// Restore the original name and form properties:
$(input)
.prop('name', clone.prop('name'))
.attr('form', clone.attr('form'));
clone.replaceWith(input);
});
}
});
form.append(iframe).appendTo(document.body);
},
abort: function() {
if (iframe) {
// javascript:false as iframe src aborts the request
// and prevents warning popups on HTTPS in IE6.
iframe.off('load').prop('src', initialIframeSrc);
}
if (form) {
form.remove();
}
}
};
}
});
// The iframe transport returns the iframe content document as response.
// 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) {
return iframe && $(iframe[0].body).text();
},
'iframe json': function(iframe) {
return iframe && jsonAPI[jsonParse]($(iframe[0].body).text());
},
'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());
}
}
});
});
