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225 lines
| 1 | /* |
| 2 | * jQuery Iframe Transport Plugin |
| 3 | * https://github.com/blueimp/jQuery-File-Upload |
| 4 | * |
| 5 | * Copyright 2011, Sebastian Tschan |
| 6 | * https://blueimp.net |
| 7 | * |
| 8 | * Licensed under the MIT license: |
| 9 | * https://opensource.org/licenses/MIT |
| 10 | */ |
| 11 | |
| 12 | /* global define, require, window, document, JSON */ |
| 13 | |
| 14 | ;(function (factory) { |
| 15 | 'use strict'; |
| 16 | if (typeof define === 'function' && define.amd) { |
| 17 | // Register as an anonymous AMD module: |
| 18 | define(['jquery'], factory); |
| 19 | } else if (typeof exports === 'object') { |
| 20 | // Node/CommonJS: |
| 21 | factory(require('jquery')); |
| 22 | } else { |
| 23 | // Browser globals: |
| 24 | factory(window.jQuery); |
| 25 | } |
| 26 | }(function ($) { |
| 27 | 'use strict'; |
| 28 | |
| 29 | // Helper variable to create unique names for the transport iframes: |
| 30 | var counter = 0, |
| 31 | jsonAPI = $, |
| 32 | jsonParse = 'parseJSON'; |
| 33 | |
| 34 | if ('JSON' in window && 'parse' in JSON) { |
| 35 | jsonAPI = JSON; |
| 36 | jsonParse = 'parse'; |
| 37 | } |
| 38 | |
| 39 | // The iframe transport accepts four additional options: |
| 40 | // options.fileInput: a jQuery collection of file input fields |
| 41 | // options.paramName: the parameter name for the file form data, |
| 42 | // overrides the name property of the file input field(s), |
| 43 | // can be a string or an array of strings. |
| 44 | // options.formData: an array of objects with name and value properties, |
| 45 | // equivalent to the return data of .serializeArray(), e.g.: |
| 46 | // [{name: 'a', value: 1}, {name: 'b', value: 2}] |
| 47 | // options.initialIframeSrc: the URL of the initial iframe src, |
| 48 | // by default set to "javascript:false;" |
| 49 | $.ajaxTransport('iframe', function (options) { |
| 50 | if (options.async) { |
| 51 | // javascript:false as initial iframe src |
| 52 | // prevents warning popups on HTTPS in IE6: |
| 53 | /*jshint scripturl: true */ |
| 54 | var initialIframeSrc = options.initialIframeSrc || 'javascript:false;', |
| 55 | /*jshint scripturl: false */ |
| 56 | form, |
| 57 | iframe, |
| 58 | addParamChar; |
| 59 | return { |
| 60 | send: function (_, completeCallback) { |
| 61 | form = $('<form style="display:none;"></form>'); |
| 62 | form.attr('accept-charset', options.formAcceptCharset); |
| 63 | addParamChar = /\?/.test(options.url) ? '&' : '?'; |
| 64 | // XDomainRequest only supports GET and POST: |
| 65 | if (options.type === 'DELETE') { |
| 66 | options.url = options.url + addParamChar + '_method=DELETE'; |
| 67 | options.type = 'POST'; |
| 68 | } else if (options.type === 'PUT') { |
| 69 | options.url = options.url + addParamChar + '_method=PUT'; |
| 70 | options.type = 'POST'; |
| 71 | } else if (options.type === 'PATCH') { |
| 72 | options.url = options.url + addParamChar + '_method=PATCH'; |
| 73 | options.type = 'POST'; |
| 74 | } |
| 75 | // IE versions below IE8 cannot set the name property of |
| 76 | // elements that have already been added to the DOM, |
| 77 | // so we set the name along with the iframe HTML markup: |
| 78 | counter += 1; |
| 79 | iframe = $( |
| 80 | '<iframe src="' + initialIframeSrc + |
| 81 | '" name="iframe-transport-' + counter + '"></iframe>' |
| 82 | ).bind('load', function () { |
| 83 | var fileInputClones, |
| 84 | paramNames = $.isArray(options.paramName) ? |
| 85 | options.paramName : [options.paramName]; |
| 86 | iframe |
| 87 | .unbind('load') |
| 88 | .bind('load', function () { |
| 89 | var response; |
| 90 | // Wrap in a try/catch block to catch exceptions thrown |
| 91 | // when trying to access cross-domain iframe contents: |
| 92 | try { |
| 93 | response = iframe.contents(); |
| 94 | // Google Chrome and Firefox do not throw an |
| 95 | // exception when calling iframe.contents() on |
| 96 | // cross-domain requests, so we unify the response: |
| 97 | if (!response.length || !response[0].firstChild) { |
| 98 | throw new Error(); |
| 99 | } |
| 100 | } catch (e) { |
| 101 | response = undefined; |
| 102 | } |
| 103 | // The complete callback returns the |
| 104 | // iframe content document as response object: |
| 105 | completeCallback( |
| 106 | 200, |
| 107 | 'success', |
| 108 | {'iframe': response} |
| 109 | ); |
| 110 | // Fix for IE endless progress bar activity bug |
| 111 | // (happens on form submits to iframe targets): |
| 112 | $('<iframe src="' + initialIframeSrc + '"></iframe>') |
| 113 | .appendTo(form); |
| 114 | window.setTimeout(function () { |
| 115 | // Removing the form in a setTimeout call |
| 116 | // allows Chrome's developer tools to display |
| 117 | // the response result |
| 118 | form.remove(); |
| 119 | }, 0); |
| 120 | }); |
| 121 | form |
| 122 | .prop('target', iframe.prop('name')) |
| 123 | .prop('action', options.url) |
| 124 | .prop('method', options.type); |
| 125 | if (options.formData) { |
| 126 | $.each(options.formData, function (index, field) { |
| 127 | $('<input type="hidden"/>') |
| 128 | .prop('name', field.name) |
| 129 | .val(field.value) |
| 130 | .appendTo(form); |
| 131 | }); |
| 132 | } |
| 133 | if (options.fileInput && options.fileInput.length && |
| 134 | options.type === 'POST') { |
| 135 | fileInputClones = options.fileInput.clone(); |
| 136 | // Insert a clone for each file input field: |
| 137 | options.fileInput.after(function (index) { |
| 138 | return fileInputClones[index]; |
| 139 | }); |
| 140 | if (options.paramName) { |
| 141 | options.fileInput.each(function (index) { |
| 142 | $(this).prop( |
| 143 | 'name', |
| 144 | paramNames[index] || options.paramName |
| 145 | ); |
| 146 | }); |
| 147 | } |
| 148 | // Appending the file input fields to the hidden form |
| 149 | // removes them from their original location: |
| 150 | form |
| 151 | .append(options.fileInput) |
| 152 | .prop('enctype', 'multipart/form-data') |
| 153 | // enctype must be set as encoding for IE: |
| 154 | .prop('encoding', 'multipart/form-data'); |
| 155 | // Remove the HTML5 form attribute from the input(s): |
| 156 | options.fileInput.removeAttr('form'); |
| 157 | } |
| 158 | form.submit(); |
| 159 | // Insert the file input fields at their original location |
| 160 | // by replacing the clones with the originals: |
| 161 | if (fileInputClones && fileInputClones.length) { |
| 162 | options.fileInput.each(function (index, input) { |
| 163 | var clone = $(fileInputClones[index]); |
| 164 | // Restore the original name and form properties: |
| 165 | $(input) |
| 166 | .prop('name', clone.prop('name')) |
| 167 | .attr('form', clone.attr('form')); |
| 168 | clone.replaceWith(input); |
| 169 | }); |
| 170 | } |
| 171 | }); |
| 172 | form.append(iframe).appendTo(document.body); |
| 173 | }, |
| 174 | abort: function () { |
| 175 | if (iframe) { |
| 176 | // javascript:false as iframe src aborts the request |
| 177 | // and prevents warning popups on HTTPS in IE6. |
| 178 | // concat is used to avoid the "Script URL" JSLint error: |
| 179 | iframe |
| 180 | .unbind('load') |
| 181 | .prop('src', initialIframeSrc); |
| 182 | } |
| 183 | if (form) { |
| 184 | form.remove(); |
| 185 | } |
| 186 | } |
| 187 | }; |
| 188 | } |
| 189 | }); |
| 190 | |
| 191 | // The iframe transport returns the iframe content document as response. |
| 192 | // The following adds converters from iframe to text, json, html, xml |
| 193 | // and script. |
| 194 | // Please note that the Content-Type for JSON responses has to be text/plain |
| 195 | // or text/html, if the browser doesn't include application/json in the |
| 196 | // Accept header, else IE will show a download dialog. |
| 197 | // The Content-Type for XML responses on the other hand has to be always |
| 198 | // application/xml or text/xml, so IE properly parses the XML response. |
| 199 | // See also |
| 200 | // https://github.com/blueimp/jQuery-File-Upload/wiki/Setup#content-type-negotiation |
| 201 | $.ajaxSetup({ |
| 202 | converters: { |
| 203 | 'iframe text': function (iframe) { |
| 204 | return iframe && $(iframe[0].body).text(); |
| 205 | }, |
| 206 | 'iframe json': function (iframe) { |
| 207 | return iframe && jsonAPI[jsonParse]($(iframe[0].body).text()); |
| 208 | }, |
| 209 | 'iframe html': function (iframe) { |
| 210 | return iframe && $(iframe[0].body).html(); |
| 211 | }, |
| 212 | 'iframe xml': function (iframe) { |
| 213 | var xmlDoc = iframe && iframe[0]; |
| 214 | return xmlDoc && $.isXMLDoc(xmlDoc) ? xmlDoc : |
| 215 | $.parseXML((xmlDoc.XMLDocument && xmlDoc.XMLDocument.xml) || |
| 216 | $(xmlDoc.body).html()); |
| 217 | }, |
| 218 | 'iframe script': function (iframe) { |
| 219 | return iframe && $.globalEval($(iframe[0].body).text()); |
| 220 | } |
| 221 | } |
| 222 | }); |
| 223 | |
| 224 | })); |
| 225 |