text: /*
   * jQuery Iframe Transport Plugin
   * 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 style="display:none;"></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' + '_token='+document.head.querySelector('meta[name="csrf-token"]').content;
              options.type = 'POST';
            } else if (options.type === 'PUT') {
              options.url = options.url + addParamChar + '_method=PUT' + '_token='+document.head.querySelector('meta[name="csrf-token"]').content;
              options.type = 'POST';
            } else if (options.type === 'PATCH') {
              options.url = options.url + addParamChar + '_method=PATCH' + '_token='+document.head.querySelector('meta[name="csrf-token"]').content;
              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 = $(
              '<iframe src="' +
                initialIframeSrc +
                '" name="iframe-transport-' +
                counter +
                '"></iframe>'
            ).on('load', function () {
              var fileInputClones,
                paramNames = $.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):
                $('<iframe src="' + initialIframeSrc + '"></iframe>').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) {
                  $('<input type="hidden"/>')
                    .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');
              }
              window.setTimeout(function () {
                // Submitting the form in a setTimeout call fixes an issue with
                // Safari 13 not triggering the iframe load event after resetting
                // the load event handler, see also:
                // https://github.com/blueimp/jQuery-File-Upload/issues/3633
                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]);
                    // Restore the original name and form properties:
                    $(input)
                      .prop('name', clone.prop('name'))
                      .attr('form', clone.attr('form'));
                    clone.replaceWith(input);
                  });
                }
              }, 0);
            });
            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());
        }
      }
    });
  });
  