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214 lines
10 KiB
JavaScript
214 lines
10 KiB
JavaScript
/*
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* jQuery Iframe Transport Plugin 1.8.2
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* https://github.com/blueimp/jQuery-File-Upload
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*
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* Copyright 2011, Sebastian Tschan
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* https://blueimp.net
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*
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* Licensed under the MIT license:
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* http://www.opensource.org/licenses/MIT
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*/
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/* global define, window, document */
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(function (factory) {
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'use strict';
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if (typeof define === 'function' && define.amd) {
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// Register as an anonymous AMD module:
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define(['jquery'], factory);
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} else {
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// Browser globals:
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factory(window.jQuery);
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}
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}(function ($) {
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'use strict';
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// Helper variable to create unique names for the transport iframes:
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var counter = 0;
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// The iframe transport accepts four additional options:
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// options.fileInput: a jQuery collection of file input fields
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// options.paramName: the parameter name for the file form data,
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// overrides the name property of the file input field(s),
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// can be a string or an array of strings.
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// options.formData: an array of objects with name and value properties,
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// equivalent to the return data of .serializeArray(), e.g.:
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// [{name: 'a', value: 1}, {name: 'b', value: 2}]
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// options.initialIframeSrc: the URL of the initial iframe src,
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// by default set to "javascript:false;"
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$.ajaxTransport('iframe', function (options) {
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if (options.async) {
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// javascript:false as initial iframe src
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// prevents warning popups on HTTPS in IE6:
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/*jshint scripturl: true */
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var initialIframeSrc = options.initialIframeSrc || 'javascript:false;',
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/*jshint scripturl: false */
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form,
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iframe,
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addParamChar;
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return {
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send: function (_, completeCallback) {
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form = $('<form style="display:none;"></form>');
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form.attr('accept-charset', options.formAcceptCharset);
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addParamChar = /\?/.test(options.url) ? '&' : '?';
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// XDomainRequest only supports GET and POST:
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if (options.type === 'DELETE') {
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options.url = options.url + addParamChar + '_method=DELETE';
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options.type = 'POST';
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} else if (options.type === 'PUT') {
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options.url = options.url + addParamChar + '_method=PUT';
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options.type = 'POST';
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} else if (options.type === 'PATCH') {
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options.url = options.url + addParamChar + '_method=PATCH';
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options.type = 'POST';
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}
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// IE versions below IE8 cannot set the name property of
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// elements that have already been added to the DOM,
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// so we set the name along with the iframe HTML markup:
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counter += 1;
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iframe = $(
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'<iframe src="' + initialIframeSrc +
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'" name="iframe-transport-' + counter + '"></iframe>'
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).bind('load', function () {
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var fileInputClones,
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paramNames = $.isArray(options.paramName) ?
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options.paramName : [options.paramName];
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iframe
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.unbind('load')
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.bind('load', function () {
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var response;
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// Wrap in a try/catch block to catch exceptions thrown
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// when trying to access cross-domain iframe contents:
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try {
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response = iframe.contents();
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// Google Chrome and Firefox do not throw an
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// exception when calling iframe.contents() on
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// cross-domain requests, so we unify the response:
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if (!response.length || !response[0].firstChild) {
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throw new Error();
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}
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} catch (e) {
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response = undefined;
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}
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// The complete callback returns the
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// iframe content document as response object:
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completeCallback(
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200,
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'success',
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{'iframe': response}
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);
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// Fix for IE endless progress bar activity bug
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// (happens on form submits to iframe targets):
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$('<iframe src="' + initialIframeSrc + '"></iframe>')
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.appendTo(form);
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window.setTimeout(function () {
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// Removing the form in a setTimeout call
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// allows Chrome's developer tools to display
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// the response result
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form.remove();
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}, 0);
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});
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form
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.prop('target', iframe.prop('name'))
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.prop('action', options.url)
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.prop('method', options.type);
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if (options.formData) {
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$.each(options.formData, function (index, field) {
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$('<input type="hidden"/>')
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.prop('name', field.name)
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.val(field.value)
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.appendTo(form);
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});
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}
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if (options.fileInput && options.fileInput.length &&
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options.type === 'POST') {
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fileInputClones = options.fileInput.clone();
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// Insert a clone for each file input field:
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options.fileInput.after(function (index) {
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return fileInputClones[index];
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});
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if (options.paramName) {
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options.fileInput.each(function (index) {
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$(this).prop(
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'name',
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paramNames[index] || options.paramName
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);
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});
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}
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// Appending the file input fields to the hidden form
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// removes them from their original location:
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form
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.append(options.fileInput)
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.prop('enctype', 'multipart/form-data')
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// enctype must be set as encoding for IE:
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.prop('encoding', 'multipart/form-data');
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// Remove the HTML5 form attribute from the input(s):
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options.fileInput.removeAttr('form');
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}
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form.submit();
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// Insert the file input fields at their original location
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// by replacing the clones with the originals:
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if (fileInputClones && fileInputClones.length) {
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options.fileInput.each(function (index, input) {
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var clone = $(fileInputClones[index]);
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// Restore the original name and form properties:
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$(input)
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.prop('name', clone.prop('name'))
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.attr('form', clone.attr('form'));
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clone.replaceWith(input);
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});
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}
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});
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form.append(iframe).appendTo(document.body);
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},
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abort: function () {
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if (iframe) {
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// javascript:false as iframe src aborts the request
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// and prevents warning popups on HTTPS in IE6.
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// concat is used to avoid the "Script URL" JSLint error:
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iframe
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.unbind('load')
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.prop('src', initialIframeSrc);
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}
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if (form) {
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form.remove();
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}
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}
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};
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}
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});
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// The iframe transport returns the iframe content document as response.
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// The following adds converters from iframe to text, json, html, xml
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// and script.
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// Please note that the Content-Type for JSON responses has to be text/plain
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// or text/html, if the browser doesn't include application/json in the
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// Accept header, else IE will show a download dialog.
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// The Content-Type for XML responses on the other hand has to be always
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// application/xml or text/xml, so IE properly parses the XML response.
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// See also
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// https://github.com/blueimp/jQuery-File-Upload/wiki/Setup#content-type-negotiation
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$.ajaxSetup({
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converters: {
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'iframe text': function (iframe) {
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return iframe && $(iframe[0].body).text();
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},
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'iframe json': function (iframe) {
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return iframe && $.parseJSON($(iframe[0].body).text());
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},
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'iframe html': function (iframe) {
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return iframe && $(iframe[0].body).html();
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},
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'iframe xml': function (iframe) {
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var xmlDoc = iframe && iframe[0];
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return xmlDoc && $.isXMLDoc(xmlDoc) ? xmlDoc :
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$.parseXML((xmlDoc.XMLDocument && xmlDoc.XMLDocument.xml) ||
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$(xmlDoc.body).html());
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},
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'iframe script': function (iframe) {
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return iframe && $.globalEval($(iframe[0].body).text());
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}
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}
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});
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}));
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