/*
* jQuery postMessage Transport Plugin
* https://github.com/blueimp/jQuery-File-Upload
*
* Copyright 2011, Sebastian Tschan
* https://blueimp.net
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/MIT
*/
/* global define, require, window, document */
(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';
var counter = 0,
names = [
'accepts',
'cache',
'contents',
'contentType',
'crossDomain',
'data',
'dataType',
'headers',
'ifModified',
'mimeType',
'password',
'processData',
'timeout',
'traditional',
'type',
'url',
'username'
],
convert = function (p) {
return p;
};
$.ajaxSetup({
converters: {
'postmessage text': convert,
'postmessage json': convert,
'postmessage html': convert
}
});
$.ajaxTransport('postmessage', function (options) {
if (options.postMessage && window.postMessage) {
var iframe,
loc = $('<a>').prop('href', options.postMessage)[0],
target = loc.protocol + '//' + loc.host,
xhrUpload = options.xhr().upload;
return {
send: function (_, completeCallback) {
counter += 1;
var message = {
id: 'postmessage-transport-' + counter
},
eventName = 'message.' + message.id;
iframe = $(
'<iframe style="display:none;" src="' +
options.postMessage + '" name="' +
message.id + '"></iframe>'
).bind('load', function () {
$.each(names, function (i, name) {
message[name] = options[name];
});
message.dataType = message.dataType.replace('postmessage ', '');
$(window).bind(eventName, function (e) {
e = e.originalEvent;
var data = e.data,
ev;
if (e.origin === target && data.id === message.id) {
if (data.type === 'progress') {
ev = document.createEvent('Event');
ev.initEvent(data.type, false, true);
$.extend(ev, data);
xhrUpload.dispatchEvent(ev);
} else {
completeCallback(
data.status,
data.statusText,
{postmessage: data.result},
data.headers
);
iframe.remove();
$(window).unbind(eventName);
}
}
});
iframe[0].contentWindow.postMessage(
message,
target
);
}).appendTo(document.body);
},
abort: function () {
if (iframe) {
iframe.remove();
}
}
};
}
});
}));
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