| 提交 | 用户 | 时间 | ||
| 58d006 | 1 | /* |
| A | 2 | * jQuery Iframe Transport Plugin 1.7 |
| 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 | * http://www.opensource.org/licenses/MIT | |
| 10 | */ | |
| 11 | ||
| 12 | /*jslint unparam: true, nomen: true */ | |
| 13 | /*global define, window, document */ | |
| 14 | ||
| 15 | (function (factory) { | |
| 16 | 'use strict'; | |
| 17 | if (typeof define === 'function' && define.amd) { | |
| 18 | // Register as an anonymous AMD module: | |
| 19 | define(['jquery'], factory); | |
| 20 | } else { | |
| 21 | // Browser globals: | |
| 22 | factory(window.jQuery); | |
| 23 | } | |
| 24 | }(function ($) { | |
| 25 | 'use strict'; | |
| 26 | ||
| 27 | // Helper variable to create unique names for the transport iframes: | |
| 28 | var counter = 0; | |
| 29 | ||
| 30 | // The iframe transport accepts three additional options: | |
| 31 | // options.fileInput: a jQuery collection of file input fields | |
| 32 | // options.paramName: the parameter name for the file form data, | |
| 33 | // overrides the name property of the file input field(s), | |
| 34 | // can be a string or an array of strings. | |
| 35 | // options.formData: an array of objects with name and value properties, | |
| 36 | // equivalent to the return data of .serializeArray(), e.g.: | |
| 37 | // [{name: 'a', value: 1}, {name: 'b', value: 2}] | |
| 38 | $.ajaxTransport('iframe', function (options) { | |
| 39 | if (options.async) { | |
| 40 | var form, | |
| 41 | iframe, | |
| 42 | addParamChar; | |
| 43 | return { | |
| 44 | send: function (_, completeCallback) { | |
| 45 | form = $('<form style="display:none;"></form>'); | |
| 46 | form.attr('accept-charset', options.formAcceptCharset); | |
| 47 | addParamChar = /\?/.test(options.url) ? '&' : '?'; | |
| 48 | // XDomainRequest only supports GET and POST: | |
| 49 | if (options.type === 'DELETE') { | |
| 50 | options.url = options.url + addParamChar + '_method=DELETE'; | |
| 51 | options.type = 'POST'; | |
| 52 | } else if (options.type === 'PUT') { | |
| 53 | options.url = options.url + addParamChar + '_method=PUT'; | |
| 54 | options.type = 'POST'; | |
| 55 | } else if (options.type === 'PATCH') { | |
| 56 | options.url = options.url + addParamChar + '_method=PATCH'; | |
| 57 | options.type = 'POST'; | |
| 58 | } | |
| 59 | // javascript:false as initial iframe src | |
| 60 | // prevents warning popups on HTTPS in IE6. | |
| 61 | // IE versions below IE8 cannot set the name property of | |
| 62 | // elements that have already been added to the DOM, | |
| 63 | // so we set the name along with the iframe HTML markup: | |
| 64 | counter += 1; | |
| 65 | iframe = $( | |
| 66 | '<iframe src="javascript:false;" name="iframe-transport-' + | |
| 67 | counter + '"></iframe>' | |
| 68 | ).bind('load', function () { | |
| 69 | var fileInputClones, | |
| 70 | paramNames = $.isArray(options.paramName) ? | |
| 71 | options.paramName : [options.paramName]; | |
| 72 | iframe | |
| 73 | .unbind('load') | |
| 74 | .bind('load', function () { | |
| 75 | var response; | |
| 76 | // Wrap in a try/catch block to catch exceptions thrown | |
| 77 | // when trying to access cross-domain iframe contents: | |
| 78 | try { | |
| 79 | response = iframe.contents(); | |
| 80 | // Google Chrome and Firefox do not throw an | |
| 81 | // exception when calling iframe.contents() on | |
| 82 | // cross-domain requests, so we unify the response: | |
| 83 | if (!response.length || !response[0].firstChild) { | |
| 84 | throw new Error(); | |
| 85 | } | |
| 86 | } catch (e) { | |
| 87 | response = undefined; | |
| 88 | } | |
| 89 | // The complete callback returns the | |
| 90 | // iframe content document as response object: | |
| 91 | completeCallback( | |
| 92 | 200, | |
| 93 | 'success', | |
| 94 | {'iframe': response} | |
| 95 | ); | |
| 96 | // Fix for IE endless progress bar activity bug | |
| 97 | // (happens on form submits to iframe targets): | |
| 98 | $('<iframe src="javascript:false;"></iframe>') | |
| 99 | .appendTo(form); | |
| 100 | window.setTimeout(function () { | |
| 101 | // Removing the form in a setTimeout call | |
| 102 | // allows Chrome's developer tools to display | |
| 103 | // the response result | |
| 104 | form.remove(); | |
| 105 | }, 0); | |
| 106 | }); | |
| 107 | form | |
| 108 | .prop('target', iframe.prop('name')) | |
| 109 | .prop('action', options.url) | |
| 110 | .prop('method', options.type); | |
| 111 | if (options.formData) { | |
| 112 | $.each(options.formData, function (index, field) { | |
| 113 | $('<input type="hidden"/>') | |
| 114 | .prop('name', field.name) | |
| 115 | .val(field.value) | |
| 116 | .appendTo(form); | |
| 117 | }); | |
| 118 | } | |
| 119 | if (options.fileInput && options.fileInput.length && | |
| 120 | options.type === 'POST') { | |
| 121 | fileInputClones = options.fileInput.clone(); | |
| 122 | // Insert a clone for each file input field: | |
| 123 | options.fileInput.after(function (index) { | |
| 124 | return fileInputClones[index]; | |
| 125 | }); | |
| 126 | if (options.paramName) { | |
| 127 | options.fileInput.each(function (index) { | |
| 128 | $(this).prop( | |
| 129 | 'name', | |
| 130 | paramNames[index] || options.paramName | |
| 131 | ); | |
| 132 | }); | |
| 133 | } | |
| 134 | // Appending the file input fields to the hidden form | |
| 135 | // removes them from their original location: | |
| 136 | form | |
| 137 | .append(options.fileInput) | |
| 138 | .prop('enctype', 'multipart/form-data') | |
| 139 | // enctype must be set as encoding for IE: | |
| 140 | .prop('encoding', 'multipart/form-data'); | |
| 141 | } | |
| 142 | form.submit(); | |
| 143 | // Insert the file input fields at their original location | |
| 144 | // by replacing the clones with the originals: | |
| 145 | if (fileInputClones && fileInputClones.length) { | |
| 146 | options.fileInput.each(function (index, input) { | |
| 147 | var clone = $(fileInputClones[index]); | |
| 148 | $(input).prop('name', clone.prop('name')); | |
| 149 | clone.replaceWith(input); | |
| 150 | }); | |
| 151 | } | |
| 152 | }); | |
| 153 | form.append(iframe).appendTo(document.body); | |
| 154 | }, | |
| 155 | abort: function () { | |
| 156 | if (iframe) { | |
| 157 | // javascript:false as iframe src aborts the request | |
| 158 | // and prevents warning popups on HTTPS in IE6. | |
| 159 | // concat is used to avoid the "Script URL" JSLint error: | |
| 160 | iframe | |
| 161 | .unbind('load') | |
| 162 | .prop('src', 'javascript'.concat(':false;')); | |
| 163 | } | |
| 164 | if (form) { | |
| 165 | form.remove(); | |
| 166 | } | |
| 167 | } | |
| 168 | }; | |
| 169 | } | |
| 170 | }); | |
| 171 | ||
| 172 | // The iframe transport returns the iframe content document as response. | |
| 173 | // The following adds converters from iframe to text, json, html, xml | |
| 174 | // and script. | |
| 175 | // Please note that the Content-Type for JSON responses has to be text/plain | |
| 176 | // or text/html, if the browser doesn't include application/json in the | |
| 177 | // Accept header, else IE will show a download dialog. | |
| 178 | // The Content-Type for XML responses on the other hand has to be always | |
| 179 | // application/xml or text/xml, so IE properly parses the XML response. | |
| 180 | // See also | |
| 181 | // https://github.com/blueimp/jQuery-File-Upload/wiki/Setup#content-type-negotiation | |
| 182 | $.ajaxSetup({ | |
| 183 | converters: { | |
| 184 | 'iframe text': function (iframe) { | |
| 185 | return iframe && $(iframe[0].body).text(); | |
| 186 | }, | |
| 187 | 'iframe json': function (iframe) { | |
| 188 | return iframe && $.parseJSON($(iframe[0].body).text()); | |
| 189 | }, | |
| 190 | 'iframe html': function (iframe) { | |
| 191 | return iframe && $(iframe[0].body).html(); | |
| 192 | }, | |
| 193 | 'iframe xml': function (iframe) { | |
| 194 | var xmlDoc = iframe && iframe[0]; | |
| 195 | return xmlDoc && $.isXMLDoc(xmlDoc) ? xmlDoc : | |
| 196 | $.parseXML((xmlDoc.XMLDocument && xmlDoc.XMLDocument.xml) || | |
| 197 | $(xmlDoc.body).html()); | |
| 198 | }, | |
| 199 | 'iframe script': function (iframe) { | |
| 200 | return iframe && $.globalEval($(iframe[0].body).text()); | |
| 201 | } | |
| 202 | } | |
| 203 | }); | |
| 204 | ||
| 205 | })); | |
