/*
* jQuery File Upload Plugin
* https://github.com/blueimp/jQuery-File-Upload
*
* Copyright 2010, Sebastian Tschan
* https://blueimp.net
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/MIT
*/
/* jshint nomen:false */
/* global define, require, window, document, location, Blob, FormData */
(function (factory) {
'use strict';
if (typeof define === 'function' && define.amd) {
// Register as an anonymous AMD module:
define([
'jquery',
'jquery.ui.widget'
], factory);
} else if (typeof exports === 'object') {
// Node/CommonJS:
factory(
require('jquery'),
require('./vendor/jquery.ui.widget')
);
} else {
// Browser globals:
factory(window.jQuery);
}
}(function ($) {
'use strict';
// Detect file input support, based on
// http://viljamis.com/blog/2012/file-upload-support-on-mobile/
$.support.fileInput = !(new RegExp(
// Handle devices which give false positives for the feature detection:
'(Android (1\\.[0156]|2\\.[01]))' +
'|(Windows Phone (OS 7|8\\.0))|(XBLWP)|(ZuneWP)|(WPDesktop)' +
'|(w(eb)?OSBrowser)|(webOS)' +
'|(Kindle/(1\\.0|2\\.[05]|3\\.0))'
).test(window.navigator.userAgent) ||
// Feature detection for all other devices:
$('<input type="file">').prop('disabled'));
// The FileReader API is not actually used, but works as feature detection,
// as some Safari versions (5?) support XHR file uploads via the FormData API,
// but not non-multipart XHR file uploads.
// window.XMLHttpRequestUpload is not available on IE10, so we check for
// window.ProgressEvent instead to detect XHR2 file upload capability:
$.support.xhrFileUpload = !!(window.ProgressEvent && window.FileReader);
$.support.xhrFormDataFileUpload = !!window.FormData;
// Detect support for Blob slicing (required for chunked uploads):
$.support.blobSlice = window.Blob && (Blob.prototype.slice ||
Blob.prototype.webkitSlice || Blob.prototype.mozSlice);
// Helper function to create drag handlers for dragover/dragenter/dragleave:
function getDragHandler(type) {
var isDragOver = type === 'dragover';
return function (e) {
e.dataTransfer = e.originalEvent && e.originalEvent.dataTransfer;
var dataTransfer = e.dataTransfer;
if (dataTransfer && $.inArray('Files', dataTransfer.types) !== -1 &&
this._trigger(
type,
$.Event(type, {delegatedEvent: e})
) !== false) {
e.preventDefault();
if (isDragOver) {
dataTransfer.dropEffect = 'copy';
}
}
};
}
// The fileupload widget listens for change events on file input fields defined
// via fileInput setting and paste or drop events of the given dropZone.
// In addition to the default jQuery Widget methods, the fileupload widget
// exposes the "add" and "send" methods, to add or directly send files using
// the fileupload API.
// By default, files added via file input selection, paste, drag & drop or
// "add" method are uploaded immediately, but it is possible to override
// the "add" callback option to queue file uploads.
$.widget('blueimp.fileupload', {
options: {
// The drop target element(s), by the default the complete document.
// Set to null to disable drag & drop support:
dropZone: $(document),
// The paste target element(s), by the default undefined.
// Set to a DOM node or jQuery object to enable file pasting:
pasteZone: undefined,
// The file input field(s), that are listened to for change events.
// If undefined, it is set to the file input fields inside
// of the widget element on plugin initialization.
// Set to null to disable the change listener.
fileInput: undefined,
// By default, the file input field is replaced with a clone after
// each input field change event. This is required for iframe transport
// queues and allows change events to be fired for the same file
// selection, but can be disabled by setting the following option to false:
replaceFileInput: true,
// The parameter name for the file form data (the request argument name).
// If undefined or empty, the name property of the file input field is
// used, or "files[]" if the file input name property is also empty,
// can be a string or an array of strings:
paramName: undefined,
// By default, each file of a selection is uploaded using an individual
// request for XHR type uploads. Set to false to upload file
// selections in one request each:
singleFileUploads: true,
// To limit the number of files uploaded with one XHR request,
// set the following option to an integer greater than 0:
limitMultiFileUploads: undefined,
// The following option limits the number of files uploaded with one
// XHR request to keep the request size under or equal to the defined
// limit in bytes:
limitMultiFileUploadSize: undefined,
// Multipart file uploads add a number of bytes to each uploaded file,
// therefore the following option adds an overhead for each file used
// in the limitMultiFileUploadSize configuration:
limitMultiFileUploadSizeOverhead: 512,
// Set the following option to true to issue all file upload requests
// in a sequential order:
sequentialUploads: false,
// To limit the number of concurrent uploads,
// set the following option to an integer greater than 0:
limitConcurrentUploads: undefined,
// Set the following option to true to force iframe transport uploads:
forceIframeTransport: false,
// Set the following option to the location of a redirect url on the
// origin server, for cross-domain iframe transport uploads:
redirect: undefined,
// The parameter name for the redirect url, sent as part of the form
// data and set to 'redirect' if this option is empty:
redirectParamName: undefined,
// Set the following option to the location of a postMessage window,
// to enable postMessage transport uploads:
postMessage: undefined,
// By default, XHR file uploads are sent as multipart/form-data.
// The iframe transport is always using multipart/form-data.
// Set to false to enable non-multipart XHR uploads:
multipart: true,
// To upload large files in smaller chunks, set the following option
// to a preferred maximum chunk size. If set to 0, null or undefined,
// or the browser does not support the required Blob API, files will
// be uploaded as a whole.
maxChunkSize: undefined,
// When a non-multipart upload or a chunked multipart upload has been
// aborted, this option can be used to resume the upload by setting
// it to the size of the already uploaded bytes. This option is most
// useful when modifying the options object inside of the "add" or
// "send" callbacks, as the options are cloned for each file upload.
uploadedBytes: undefined,
// By default, failed (abort or error) file uploads are removed from the
// global progress calculation. Set the following option to false to
// prevent recalculating the global progress data:
recalculateProgress: true,
// Interval in milliseconds to calculate and trigger progress events:
progressInterval: 100,
// Interval in milliseconds to calculate progress bitrate:
bitrateInterval: 500,
// By default, uploads are started automatically when adding files:
autoUpload: true,
// Error and info messages:
messages: {
uploadedBytes: 'Uploaded bytes exceed file size'
},
// Translation function, gets the message key to be translated
// and an object with context specific data as arguments:
i18n: function (message, context) {
message = this.messages[message] || message.toString();
if (context) {
$.each(context, function (key, value) {
message = message.replace('{' + key + '}', value);
});
}
return message;
},
// Additional form data to be sent along with the file uploads can be set
// using this option, which accepts an array of objects with name and
// value properties, a function returning such an array, a FormData
// object (for XHR file uploads), or a simple object.
// The form of the first fileInput is given as parameter to the function:
formData: function (form) {
return form.serializeArray();
},
// The add callback is invoked as soon as files are added to the fileupload
// widget (via file input selection, drag & drop, paste or add API call).
// If the singleFileUploads option is enabled, this callback will be
// called once for each file in the selection for XHR file uploads, else
// once for each file selection.
//
// The upload starts when the submit method is invoked on the data parameter.
// The data object contains a files property holding the added files
// and allows you to override plugin options as well as define ajax settings.
//
// Listeners for this callback can also be bound the following way:
// .bind('fileuploadadd', func);
//
// data.submit() returns a Promise object and allows to attach additional
// handlers using jQuery's Deferred callbacks:
// data.submit().done(func).fail(func).always(func);
add: function (e, data) {
if (e.isDefaultPrevented()) {
return false;
}
if (data.autoUpload || (data.autoUpload !== false &&
$(this).fileupload('option', 'autoUpload'))) {
data.process().done(function () {
data.submit();
});
}
},
// Other callbacks:
// Callback for the submit event of each file upload:
// submit: function (e, data) {}, // .bind('fileuploadsubmit', func);
// Callback for the start of each file upload request:
// send: function (e, data) {}, // .bind('fileuploadsend', func);
// Callback for successful uploads:
// done: function (e, data) {}, // .bind('fileuploaddone', func);
// Callback for failed (abort or error) uploads:
// fail: function (e, data) {}, // .bind('fileuploadfail', func);
// Callback for completed (success, abort or error) requests:
// always: function (e, data) {}, // .bind('fileuploadalways', func);
// Callback for upload progress events:
// progress: function (e, data) {}, // .bind('fileuploadprogress', func);
// Callback for global upload progress events:
// progressall: function (e, data) {}, // .bind('fileuploadprogressall', func);
// Callback for uploads start, equivalent to the global ajaxStart event:
// start: function (e) {}, // .bind('fileuploadstart', func);
// Callback for uploads stop, equivalent to the global ajaxStop event:
// stop: function (e) {}, // .bind('fileuploadstop', func);
// Callback for change events of the fileInput(s):
// change: function (e, data) {}, // .bind('fileuploadchange', func);
// Callback for paste events to the pasteZone(s):
// paste: function (e, data) {}, // .bind('fileuploadpaste', func);
// Callback for drop events of the dropZone(s):
// drop: function (e, data) {}, // .bind('fileuploaddrop', func);
// Callback for dragover events of the dropZone(s):
// dragover: function (e) {}, // .bind('fileuploaddragover', func);
// Callback for the start of each chunk upload request:
// chunksend: function (e, data) {}, // .bind('fileuploadchunksend', func);
// Callback for successful chunk uploads:
// chunkdone: function (e, data) {}, // .bind('fileuploadchunkdone', func);
// Callback for failed (abort or error) chunk uploads:
// chunkfail: function (e, data) {}, // .bind('fileuploadchunkfail', func);
// Callback for completed (success, abort or error) chunk upload requests:
// chunkalways: function (e, data) {}, // .bind('fileuploadchunkalways', func);
// The plugin options are used as settings object for the ajax calls.
// The following are jQuery ajax settings required for the file uploads:
processData: false,
contentType: false,
cache: false,
timeout: 0
},
// A list of options that require reinitializing event listeners and/or
// special initialization code:
_specialOptions: [
'fileInput',
'dropZone',
'pasteZone',
'multipart',
'forceIframeTransport'
],
_blobSlice: $.support.blobSlice && function () {
var slice = this.slice || this.webkitSlice || this.mozSlice;
return slice.apply(this, arguments);
},
_BitrateTimer: function () {
this.timestamp = ((Date.now) ? Date.now() : (new Date()).getTime());
this.loaded = 0;
this.bitrate = 0;
this.getBitrate = function (now, loaded, interval) {
var timeDiff = now - this.timestamp;
if (!this.bitrate || !interval || timeDiff > interval) {
this.bitrate = (loaded - this.loaded) * (1000 / timeDiff) * 8;
this.loaded = loaded;
this.timestamp = now;
}
return this.bitrate;
};
},
_isXHRUpload: function (options) {
return !options.forceIframeTransport &&
((!options.multipart && $.support.xhrFileUpload) ||
$.support.xhrFormDataFileUpload);
},
_getFormData: function (options) {
var formData;
if ($.type(options.formData) === 'function') {
return options.formData(options.form);
}
if ($.isArray(options.formData)) {
return options.formData;
}
if ($.type(options.formData) === 'object') {
formData = [];
$.each(options.formData, function (name, value) {
formData.push({name: name, value: value});
});
return formData;
}
return [];
},
_getTotal: function (files) {
var total = 0;
$.each(files, function (index, file) {
total += file.size || 1;
});
return total;
},
_initProgressObject: function (obj) {
var progress = {
loaded: 0,
total: 0,
bitrate: 0
};
if (obj._progress) {
$.extend(obj._progress, progress);
} else {
obj._progress = progress;
}
},
_initResponseObject: function (obj) {
var prop;
if (obj._response) {
for (prop in obj._response) {
if (obj._response.hasOwnProperty(prop)) {
delete obj._response[prop];
}
}
} else {
obj._response = {};
}
},
_onProgress: function (e, data) {
if (e.lengthComputable) {
var now = ((Date.now) ? Date.now() : (new Date()).getTime()),
loaded;
if (data._time && data.progressInterval &&
(now - data._time < data.progressInterval) &&
e.loaded !== e.total) {
return;
}
data._time = now;
loaded = Math.floor(
e.loaded / e.total * (data.chunkSize || data._progress.total)
) + (data.uploadedBytes || 0);
// Add the difference from the previously loaded state
// to the global loaded counter:
this._progress.loaded += (loaded - data._progress.loaded);
this._progress.bitrate = this._bitrateTimer.getBitrate(
now,
this._progress.loaded,
data.bitrateInterval
);
data._progress.loaded = data.loaded = loaded;
data._progress.bitrate = data.bitrate = data._bitrateTimer.getBitrate(
now,
loaded,
data.bitrateInterval
);
// Trigger a custom progress event with a total data property set
// to the file size(s) of the current upload and a loaded data
// property calculated accordingly:
this._trigger(
'progress',
$.Event('progress', {delegatedEvent: e}),
data
);
// Trigger a global progress event for all current file uploads,
// including ajax calls queued for sequential file uploads:
this._trigger(
'progressall',
$.Event('progressall', {delegatedEvent: e}),
this._progress
);
}
},
_initProgressListener: function (options) {
var that = this,
xhr = options.xhr ? options.xhr() : $.ajaxSettings.xhr();
// Accesss to the native XHR object is required to add event listeners
// for the upload progress event:
if (xhr.upload) {
$(xhr.upload).bind('progress', function (e) {
var oe = e.originalEvent;
// Make sure the progress event properties get copied over:
e.lengthComputable = oe.lengthComputable;
e.loaded = oe.loaded;
e.total = oe.total;
that._onProgress(e, options);
});
options.xhr = function () {
return xhr;
};
}
},
_isInstanceOf: function (type, obj) {
// Cross-frame instanceof check
return Object.prototype.toString.call(obj) === '[object ' + type + ']';
},
_initXHRData: function (options) {
var that = this,
formData,
file = options.files[0],
// Ignore non-multipart setting if not supported:
multipart = options.multipart || !$.support.xhrFileUpload,
paramName = $.type(options.paramName) === 'array' ?
options.paramName[0] : options.paramName;
options.headers = $.extend({}, options.headers);
if (options.contentRange) {
options.headers['Content-Range'] = options.contentRange;
}
if (!multipart || options.blob || !this._isInstanceOf('File', file)) {
options.headers['Content-Disposition'] = 'attachment; filename="' +
encodeURI(file.name) + '"';
}
if (!multipart) {
options.contentType = file.type || 'application/octet-stream';
options.data = options.blob || file;
} else if ($.support.xhrFormDataFileUpload) {
if (options.postMessage) {
// window.postMessage does not allow sending FormData
// objects, so we just add the File/Blob objects to
// the formData array and let the postMessage window
// create the FormData object out of this array:
formData = this._getFormData(options);
if (options.blob) {
formData.push({
name: paramName,
value: options.blob
});
} else {
$.each(options.files, function (index, file) {
formData.push({
name: ($.type(options.paramName) === 'array' &&
options.paramName[index]) || paramName,
value: file
});
});
}
} else {
if (that._isInstanceOf('FormData', options.formData)) {
formData = options.formData;
} else {
formData = new FormData();
$.each(this._getFormData(options), function (index, field) {
formData.append(field.name, field.value);
});
}
if (options.blob) {
formData.append(paramName, options.blob, file.name);
} else {
$.each(options.files, function (index, file) {
// This check allows the tests to run with
// dummy objects:
if (that._isInstanceOf('File', file) ||
that._isInstanceOf('Blob', file)) {
formData.append(
($.type(options.paramName) === 'array' &&
options.paramName[index]) || paramName,
file,
file.uploadName || file.name
);
}
});
}
}
options.data = formData;
}
// Blob reference is not needed anymore, free memory:
options.blob = null;
},
_initIframeSettings: function (options) {
var targetHost = $('<a></a>').prop('href', options.url).prop('host');
// Setting the dataType to iframe enables the iframe transport:
options.dataType = 'iframe ' + (options.dataType || '');
// The iframe transport accepts a serialized array as form data:
options.formData = this._getFormData(options);
// Add redirect url to form data on cross-domain uploads:
if (options.redirect && targetHost && targetHost !== location.host) {
options.formData.push({
name: options.redirectParamName || 'redirect',
value: options.redirect
});
}
},
_initDataSettings: function (options) {
if (this._isXHRUpload(options)) {
if (!this._chunkedUpload(options, true)) {
if (!options.data) {
this._initXHRData(options);
}
this._initProgressListener(options);
}
if (options.postMessage) {
// Setting the dataType to postmessage enables the
// postMessage transport:
options.dataType = 'postmessage ' + (options.dataType || '');
}
} else {
this._initIframeSettings(options);
}
},
_getParamName: function (options) {
var fileInput = $(options.fileInput),
paramName = options.paramName;
if (!paramName) {
paramName = [];
fileInput.each(function () {
var input = $(this),
name = input.prop('name') || 'files[]',
i = (input.prop('files') || [1]).length;
while (i) {
paramName.push(name);
i -= 1;
}
});
if (!paramName.length) {
paramName = [fileInput.prop('name') || 'files[]'];
}
} else if (!$.isArray(paramName)) {
paramName = [paramName];
}
return paramName;
},
_initFormSettings: function (options) {
// Retrieve missing options from the input field and the
// associated form, if available:
if (!options.form || !options.form.length) {
options.form = $(options.fileInput.prop('form'));
// If the given file input doesn't have an associated form,
// use the default widget file input's form:
if (!options.form.length) {
options.form = $(this.options.fileInput.prop('form'));
}
}
options.paramName = this._getParamName(options);
if (!options.url) {
options.url = options.form.prop('action') || location.href;
}
// The HTTP request method must be "POST" or "PUT":
options.type = (options.type ||
($.type(options.form.prop('method')) === 'string' &&
options.form.prop('method')) || ''
).toUpperCase();
if (options.type !== 'POST' && options.type !== 'PUT' &&
options.type !== 'PATCH') {
options.type = 'POST';
}
if (!options.formAcceptCharset) {
options.formAcceptCharset = options.form.attr('accept-charset');
}
},
_getAJAXSettings: function (data) {
var options = $.extend({}, this.options, data);
this._initFormSettings(options);
this._initDataSettings(options);
return options;
},
// jQuery 1.6 doesn't provide .state(),
// while jQuery 1.8+ removed .isRejected() and .isResolved():
_getDeferredState: function (deferred) {
if (deferred.state) {
return deferred.state();
}
if (deferred.isResolved()) {
return 'resolved';
}
if (deferred.isRejected()) {
return 'rejected';
}
return 'pending';
},
// Maps jqXHR callbacks to the equivalent
// methods of the given Promise object:
_enhancePromise: function (promise) {
promise.success = promise.done;
promise.error = promise.fail;
promise.complete = promise.always;
return promise;
},
// Creates and returns a Promise object enhanced with
// the jqXHR methods abort, success, error and complete:
_getXHRPromise: function (resolveOrReject, context, args) {
var dfd = $.Deferred(),
promise = dfd.promise();
context = context || this.options.context || promise;
if (resolveOrReject === true) {
dfd.resolveWith(context, args);
} else if (resolveOrReject === false) {
dfd.rejectWith(context, args);
}
promise.abort = dfd.promise;
return this._enhancePromise(promise);
},
// Adds convenience methods to the data callback argument:
_addConvenienceMethods: function (e, data) {
var that = this,
getPromise = function (args) {
return $.Deferred().resolveWith(that, args).promise();
};
data.process = function (resolveFunc, rejectFunc) {
if (resolveFunc || rejectFunc) {
data._processQueue = this._processQueue =
(this._processQueue || getPromise([this])).pipe(
function () {
if (data.errorThrown) {
return $.Deferred()
.rejectWith(that, [data]).promise();
}
return getPromise(arguments);
}
).pipe(resolveFunc, rejectFunc);
}
return this._processQueue || getPromise([this]);
};
data.submit = function () {
if (this.state() !== 'pending') {
data.jqXHR = this.jqXHR =
(that._trigger(
'submit',
$.Event('submit', {delegatedEvent: e}),
this
) !== false) && that._onSend(e, this);
}
return this.jqXHR || that._getXHRPromise();
};
data.abort = function () {
if (this.jqXHR) {
return this.jqXHR.abort();
}
this.errorThrown = 'abort';
that._trigger('fail', null, this);
return that._getXHRPromise(false);
};
data.state = function () {
if (this.jqXHR) {
return that._getDeferredState(this.jqXHR);
}
if (this._processQueue) {
return that._getDeferredState(this._processQueue);
}
};
data.processing = function () {
return !this.jqXHR && this._processQueue && that
._getDeferredState(this._processQueue) === 'pending';
};
data.progress = function () {
return this._progress;
};
data.response = function () {
return this._response;
};
},
// Parses the Range header from the server response
// and returns the uploaded bytes:
_getUploadedBytes: function (jqXHR) {
var range = jqXHR.getResponseHeader('Range'),
parts = range && range.split('-'),
upperBytesPos = parts && parts.length > 1 &&
parseInt(parts[1], 10);
return upperBytesPos && upperBytesPos + 1;
},
// Uploads a file in multiple, sequential requests
// by splitting the file up in multiple blob chunks.
// If the second parameter is true, only tests if the file
// should be uploaded in chunks, but does not invoke any
// upload requests:
_chunkedUpload: function (options, testOnly) {
options.uploadedBytes = options.uploadedBytes || 0;
var that = this,
file = options.files[0],
fs = file.size,
ub = options.uploadedBytes,
mcs = options.maxChunkSize || fs,
slice = this._blobSlice,
dfd = $.Deferred(),
promise = dfd.promise(),
jqXHR,
upload;
if (!(this._isXHRUpload(options) && slice && (ub || mcs < fs)) ||
options.data) {
return false;
}
if (testOnly) {
return true;
}
if (ub >= fs) {
file.error = options.i18n('uploadedBytes');
return this._getXHRPromise(
false,
options.context,
[null, 'error', file.error]
);
}
// The chunk upload method:
upload = function () {
// Clone the options object for each chunk upload:
var o = $.extend({}, options),
currentLoaded = o._progress.loaded;
o.blob = slice.call(
file,
ub,
ub + mcs,
file.type
);
// Store the current chunk size, as the blob itself
// will be dereferenced after data processing:
o.chunkSize = o.blob.size;
// Expose the chunk bytes position range:
o.contentRange = 'bytes ' + ub + '-' +
(ub + o.chunkSize - 1) + '/' + fs;
// Process the upload data (the blob and potential form data):
that._initXHRData(o);
// Add progress listeners for this chunk upload:
that._initProgressListener(o);
jqXHR = ((that._trigger('chunksend', null, o) !== false && $.ajax(o)) ||
that._getXHRPromise(false, o.context))
.done(function (result, textStatus, jqXHR) {
ub = that._getUploadedBytes(jqXHR) ||
(ub + o.chunkSize);
// Create a progress event if no final progress event
// with loaded equaling total has been triggered
// for this chunk:
if (currentLoaded + o.chunkSize - o._progress.loaded) {
that._onProgress($.Event('progress', {
lengthComputable: true,
loaded: ub - o.uploadedBytes,
total: ub - o.uploadedBytes
}), o);
}
options.uploadedBytes = o.uploadedBytes = ub;
o.result = result;
o.textStatus = textStatus;
o.jqXHR = jqXHR;
that._trigger('chunkdone', null, o);
that._trigger('chunkalways', null, o);
if (ub < fs) {
// File upload not yet complete,
// continue with the next chunk:
upload();
} else {
dfd.resolveWith(
o.context,
[result, textStatus, jqXHR]
);
}
})
.fail(function (jqXHR, textStatus, errorThrown) {
o.jqXHR = jqXHR;
o.textStatus = textStatus;
o.errorThrown = errorThrown;
that._trigger('chunkfail', null, o);
that._trigger('chunkalways', null, o);
dfd.rejectWith(
o.context,
[jqXHR, textStatus, errorThrown]
);
});
};
this._enhancePromise(promise);
promise.abort = function () {
return jqXHR.abort();
};
upload();
return promise;
},
_beforeSend: function (e, data) {
if (this._active === 0) {
// the start callback is triggered when an upload starts
// and no other uploads are currently running,
// equivalent to the global ajaxStart event:
this._trigger('start');
// Set timer for global bitrate progress calculation:
this._bitrateTimer = new this._BitrateTimer();
// Reset the global progress values:
this._progress.loaded = this._progress.total = 0;
this._progress.bitrate = 0;
}
// Make sure the container objects for the .response() and
// .progress() methods on the data object are available
// and reset to their initial state:
this._initResponseObject(data);
this._initProgressObject(data);
data._progress.loaded = data.loaded = data.uploadedBytes || 0;
data._progress.total = data.total = this._getTotal(data.files) || 1;
data._progress.bitrate = data.bitrate = 0;
this._active += 1;
// Initialize the global progress values:
this._progress.loaded += data.loaded;
this._progress.total += data.total;
},
_onDone: function (result, textStatus, jqXHR, options) {
var total = options._progress.total,
response = options._response;
if (options._progress.loaded < total) {
// Create a progress event if no final progress event
// with loaded equaling total has been triggered:
this._onProgress($.Event('progress', {
lengthComputable: true,
loaded: total,
total: total
}), options);
}
response.result = options.result = result;
response.textStatus = options.textStatus = textStatus;
response.jqXHR = options.jqXHR = jqXHR;
this._trigger('done', null, options);
},
_onFail: function (jqXHR, textStatus, errorThrown, options) {
var response = options._response;
if (options.recalculateProgress) {
// Remove the failed (error or abort) file upload from
// the global progress calculation:
this._progress.loaded -= options._progress.loaded;
this._progress.total -= options._progress.total;
}
response.jqXHR = options.jqXHR = jqXHR;
response.textStatus = options.textStatus = textStatus;
response.errorThrown = options.errorThrown = errorThrown;
this._trigger('fail', null, options);
},
_onAlways: function (jqXHRorResult, textStatus, jqXHRorError, options) {
// jqXHRorResult, textStatus and jqXHRorError are added to the
// options object via done and fail callbacks
this._trigger('always', null, options);
},
_onSend: function (e, data) {
if (!data.submit) {
this._addConvenienceMethods(e, data);
}
var that = this,
jqXHR,
aborted,
slot,
pipe,
options = that._getAJAXSettings(data),
send = function () {
that._sending += 1;
// Set timer for bitrate progress calculation:
options._bitrateTimer = new that._BitrateTimer();
jqXHR = jqXHR || (
((aborted || that._trigger(
'send',
$.Event('send', {delegatedEvent: e}),
options
) === false) &&
that._getXHRPromise(false, options.context, aborted)) ||
that._chunkedUpload(options) || $.ajax(options)
).done(function (result, textStatus, jqXHR) {
that._onDone(result, textStatus, jqXHR, options);
}).fail(function (jqXHR, textStatus, errorThrown) {
that._onFail(jqXHR, textStatus, errorThrown, options);
}).always(function (jqXHRorResult, textStatus, jqXHRorError) {
that._onAlways(
jqXHRorResult,
textStatus,
jqXHRorError,
options
);
that._sending -= 1;
that._active -= 1;
if (options.limitConcurrentUploads &&
options.limitConcurrentUploads > that._sending) {
// Start the next queued upload,
// that has not been aborted:
var nextSlot = that._slots.shift();
while (nextSlot) {
if (that._getDeferredState(nextSlot) === 'pending') {
nextSlot.resolve();
break;
}
nextSlot = that._slots.shift();
}
}
if (that._active === 0) {
// The stop callback is triggered when all uploads have
// been completed, equivalent to the global ajaxStop event:
that._trigger('stop');
}
});
return jqXHR;
};
this._beforeSend(e, options);
if (this.options.sequentialUploads ||
(this.options.limitConcurrentUploads &&
this.options.limitConcurrentUploads <= this._sending)) {
if (this.options.limitConcurrentUploads > 1) {
slot = $.Deferred();
this._slots.push(slot);
pipe = slot.pipe(send);
} else {
this._sequence = this._sequence.pipe(send, send);
pipe = this._sequence;
}
// Return the piped Promise object, enhanced with an abort method,
// which is delegated to the jqXHR object of the current upload,
// and jqXHR callbacks mapped to the equivalent Promise methods:
pipe.abort = function () {
aborted = [undefined, 'abort', 'abort'];
if (!jqXHR) {
if (slot) {
slot.rejectWith(options.context, aborted);
}
return send();
}
return jqXHR.abort();
};
return this._enhancePromise(pipe);
}
return send();
},
_onAdd: function (e, data) {
var that = this,
result = true,
options = $.extend({}, this.options, data),
files = data.files,
filesLength = files.length,
limit = options.limitMultiFileUploads,
limitSize = options.limitMultiFileUploadSize,
overhead = options.limitMultiFileUploadSizeOverhead,
batchSize = 0,
paramName = this._getParamName(options),
paramNameSet,
paramNameSlice,
fileSet,
i,
j = 0;
if (!filesLength) {
return false;
}
if (limitSize && files[0].size === undefined) {
limitSize = undefined;
}
if (!(options.singleFileUploads || limit || limitSize) ||
!this._isXHRUpload(options)) {
fileSet = [files];
paramNameSet = [paramName];
} else if (!(options.singleFileUploads || limitSize) && limit) {
fileSet = [];
paramNameSet = [];
for (i = 0; i < filesLength; i += limit) {
fileSet.push(files.slice(i, i + limit));
paramNameSlice = paramName.slice(i, i + limit);
if (!paramNameSlice.length) {
paramNameSlice = paramName;
}
paramNameSet.push(paramNameSlice);
}
} else if (!options.singleFileUploads && limitSize) {
fileSet = [];
paramNameSet = [];
for (i = 0; i < filesLength; i = i + 1) {
batchSize += files[i].size + overhead;
if (i + 1 === filesLength ||
((batchSize + files[i + 1].size + overhead) > limitSize) ||
(limit && i + 1 - j >= limit)) {
fileSet.push(files.slice(j, i + 1));
paramNameSlice = paramName.slice(j, i + 1);
if (!paramNameSlice.length) {
paramNameSlice = paramName;
}
paramNameSet.push(paramNameSlice);
j = i + 1;
batchSize = 0;
}
}
} else {
paramNameSet = paramName;
}
data.originalFiles = files;
$.each(fileSet || files, function (index, element) {
var newData = $.extend({}, data);
newData.files = fileSet ? element : [element];
newData.paramName = paramNameSet[index];
that._initResponseObject(newData);
that._initProgressObject(newData);
that._addConvenienceMethods(e, newData);
result = that._trigger(
'add',
$.Event('add', {delegatedEvent: e}),
newData
);
return result;
});
return result;
},
_replaceFileInput: function (data) {
var input = data.fileInput,
inputClone = input.clone(true),
restoreFocus = input.is(document.activeElement);
// Add a reference for the new cloned file input to the data argument:
data.fileInputClone = inputClone;
$('<form></form>').append(inputClone)[0].reset();
// Detaching allows to insert the fileInput on another form
// without loosing the file input value:
input.after(inputClone).detach();
// If the fileInput had focus before it was detached,
// restore focus to the inputClone.
if (restoreFocus) {
inputClone.focus();
}
// Avoid memory leaks with the detached file input:
$.cleanData(input.unbind('remove'));
// Replace the original file input element in the fileInput
// elements set with the clone, which has been copied including
// event handlers:
this.options.fileInput = this.options.fileInput.map(function (i, el) {
if (el === input[0]) {
return inputClone[0];
}
return el;
});
// If the widget has been initialized on the file input itself,
// override this.element with the file input clone:
if (input[0] === this.element[0]) {
this.element = inputClone;
}
},
_handleFileTreeEntry: function (entry, path) {
var that = this,
dfd = $.Deferred(),
errorHandler = function (e) {
if (e && !e.entry) {
e.entry = entry;
}
// Since $.when returns immediately if one
// Deferred is rejected, we use resolve instead.
// This allows valid files and invalid items
// to be returned together in one set:
dfd.resolve([e]);
},
successHandler = function (entries) {
that._handleFileTreeEntries(
entries,
path + entry.name + '/'
).done(function (files) {
dfd.resolve(files);
}).fail(errorHandler);
},
readEntries = function () {
dirReader.readEntries(function (results) {
if (!results.length) {
successHandler(entries);
} else {
entries = entries.concat(results);
readEntries();
}
}, errorHandler);
},
dirReader, entries = [];
path = path || '';
if (entry.isFile) {
if (entry._file) {
// Workaround for Chrome bug #149735
entry._file.relativePath = path;
dfd.resolve(entry._file);
} else {
entry.file(function (file) {
file.relativePath = path;
dfd.resolve(file);
}, errorHandler);
}
} else if (entry.isDirectory) {
dirReader = entry.createReader();
readEntries();
} else {
// Return an empy list for file system items
// other than files or directories:
dfd.resolve([]);
}
return dfd.promise();
},
_handleFileTreeEntries: function (entries, path) {
var that = this;
return $.when.apply(
$,
$.map(entries, function (entry) {
return that._handleFileTreeEntry(entry, path);
})
).pipe(function () {
return Array.prototype.concat.apply(
[],
arguments
);
});
},
_getDroppedFiles: function (dataTransfer) {
dataTransfer = dataTransfer || {};
var items = dataTransfer.items;
if (items && items.length && (items[0].webkitGetAsEntry ||
items[0].getAsEntry)) {
return this._handleFileTreeEntries(
$.map(items, function (item) {
var entry;
if (item.webkitGetAsEntry) {
entry = item.webkitGetAsEntry();
if (entry) {
// Workaround for Chrome bug #149735:
entry._file = item.getAsFile();
}
return entry;
}
return item.getAsEntry();
})
);
}
return $.Deferred().resolve(
$.makeArray(dataTransfer.files)
).promise();
},
_getSingleFileInputFiles: function (fileInput) {
fileInput = $(fileInput);
var entries = fileInput.prop('webkitEntries') ||
fileInput.prop('entries'),
files,
value;
if (entries && entries.length) {
return this._handleFileTreeEntries(entries);
}
files = $.makeArray(fileInput.prop('files'));
if (!files.length) {
value = fileInput.prop('value');
if (!value) {
return $.Deferred().resolve([]).promise();
}
// If the files property is not available, the browser does not
// support the File API and we add a pseudo File object with
// the input value as name with path information removed:
files = [{name: value.replace(/^.*\\/, '')}];
} else if (files[0].name === undefined && files[0].fileName) {
// File normalization for Safari 4 and Firefox 3:
$.each(files, function (index, file) {
file.name = file.fileName;
file.size = file.fileSize;
});
}
return $.Deferred().resolve(files).promise();
},
_getFileInputFiles: function (fileInput) {
if (!(fileInput instanceof $) || fileInput.length === 1) {
return this._getSingleFileInputFiles(fileInput);
}
return $.when.apply(
$,
$.map(fileInput, this._getSingleFileInputFiles)
).pipe(function () {
return Array.prototype.concat.apply(
[],
arguments
);
});
},
_onChange: function (e) {
var that = this,
data = {
fileInput: $(e.target),
form: $(e.target.form)
};
this._getFileInputFiles(data.fileInput).always(function (files) {
data.files = files;
if (that.options.replaceFileInput) {
that._replaceFileInput(data);
}
if (that._trigger(
'change',
$.Event('change', {delegatedEvent: e}),
data
) !== false) {
that._onAdd(e, data);
}
});
},
_onPaste: function (e) {
var items = e.originalEvent && e.originalEvent.clipboardData &&
e.originalEvent.clipboardData.items,
data = {files: []};
if (items && items.length) {
$.each(items, function (index, item) {
var file = item.getAsFile && item.getAsFile();
if (file) {
data.files.push(file);
}
});
if (this._trigger(
'paste',
$.Event('paste', {delegatedEvent: e}),
data
) !== false) {
this._onAdd(e, data);
}
}
},
_onDrop: function (e) {
e.dataTransfer = e.originalEvent && e.originalEvent.dataTransfer;
var that = this,
dataTransfer = e.dataTransfer,
data = {};
if (dataTransfer && dataTransfer.files && dataTransfer.files.length) {
e.preventDefault();
this._getDroppedFiles(dataTransfer).always(function (files) {
data.files = files;
if (that._trigger(
'drop',
$.Event('drop', {delegatedEvent: e}),
data
) !== false) {
that._onAdd(e, data);
}
});
}
},
_onDragOver: getDragHandler('dragover'),
_onDragEnter: getDragHandler('dragenter'),
_onDragLeave: getDragHandler('dragleave'),
_initEventHandlers: function () {
if (this._isXHRUpload(this.options)) {
this._on(this.options.dropZone, {
dragover: this._onDragOver,
drop: this._onDrop,
// event.preventDefault() on dragenter is required for IE10+:
dragenter: this._onDragEnter,
// dragleave is not required, but added for completeness:
dragleave: this._onDragLeave
});
this._on(this.options.pasteZone, {
paste: this._onPaste
});
}
if ($.support.fileInput) {
this._on(this.options.fileInput, {
change: this._onChange
});
}
},
_destroyEventHandlers: function () {
this._off(this.options.dropZone, 'dragenter dragleave dragover drop');
this._off(this.options.pasteZone, 'paste');
this._off(this.options.fileInput, 'change');
},
_setOption: function (key, value) {
var reinit = $.inArray(key, this._specialOptions) !== -1;
if (reinit) {
this._destroyEventHandlers();
}
this._super(key, value);
if (reinit) {
this._initSpecialOptions();
this._initEventHandlers();
}
},
_initSpecialOptions: function () {
var options = this.options;
if (options.fileInput === undefined) {
options.fileInput = this.element.is('input[type="file"]') ?
this.element : this.element.find('input[type="file"]');
} else if (!(options.fileInput instanceof $)) {
options.fileInput = $(options.fileInput);
}
if (!(options.dropZone instanceof $)) {
options.dropZone = $(options.dropZone);
}
if (!(options.pasteZone instanceof $)) {
options.pasteZone = $(options.pasteZone);
}
},
_getRegExp: function (str) {
var parts = str.split('/'),
modifiers = parts.pop();
parts.shift();
return new RegExp(parts.join('/'), modifiers);
},
_isRegExpOption: function (key, value) {
return key !== 'url' && $.type(value) === 'string' &&
/^\/.*\/[igm]{0,3}$/.test(value);
},
_initDataAttributes: function () {
var that = this,
options = this.options,
data = this.element.data();
// Initialize options set via HTML5 data-attributes:
$.each(
this.element[0].attributes,
function (index, attr) {
var key = attr.name.toLowerCase(),
value;
if (/^data-/.test(key)) {
// Convert hyphen-ated key to camelCase:
key = key.slice(5).replace(/-[a-z]/g, function (str) {
return str.charAt(1).toUpperCase();
});
value = data[key];
if (that._isRegExpOption(key, value)) {
value = that._getRegExp(value);
}
options[key] = value;
}
}
);
},
_create: function () {
this._initDataAttributes();
this._initSpecialOptions();
this._slots = [];
this._sequence = this._getXHRPromise(true);
this._sending = this._active = 0;
this._initProgressObject(this);
this._initEventHandlers();
},
// This method is exposed to the widget API and allows to query
// the number of active uploads:
active: function () {
return this._active;
},
// This method is exposed to the widget API and allows to query
// the widget upload progress.
// It returns an object with loaded, total and bitrate properties
// for the running uploads:
progress: function () {
return this._progress;
},
// This method is exposed to the widget API and allows adding files
// using the fileupload API. The data parameter accepts an object which
// must have a files property and can contain additional options:
// .fileupload('add', {files: filesList});
add: function (data) {
var that = this;
if (!data || this.options.disabled) {
return;
}
if (data.fileInput && !data.files) {
this._getFileInputFiles(data.fileInput).always(function (files) {
data.files = files;
that._onAdd(null, data);
});
} else {
data.files = $.makeArray(data.files);
this._onAdd(null, data);
}
},
// This method is exposed to the widget API and allows sending files
// using the fileupload API. The data parameter accepts an object which
// must have a files or fileInput property and can contain additional options:
// .fileupload('send', {files: filesList});
// The method returns a Promise object for the file upload call.
send: function (data) {
if (data && !this.options.disabled) {
if (data.fileInput && !data.files) {
var that = this,
dfd = $.Deferred(),
promise = dfd.promise(),
jqXHR,
aborted;
promise.abort = function () {
aborted = true;
if (jqXHR) {
return jqXHR.abort();
}
dfd.reject(null, 'abort', 'abort');
return promise;
};
this._getFileInputFiles(data.fileInput).always(
function (files) {
if (aborted) {
return;
}
if (!files.length) {
dfd.reject();
return;
}
data.files = files;
jqXHR = that._onSend(null, data);
jqXHR.then(
function (result, textStatus, jqXHR) {
dfd.resolve(result, textStatus, jqXHR);
},
function (jqXHR, textStatus, errorThrown) {
dfd.reject(jqXHR, textStatus, errorThrown);
}
);
}
);
return this._enhancePromise(promise);
}
data.files = $.makeArray(data.files);
if (data.files.length) {
return this._onSend(null, data);
}
}
return this._getXHRPromise(false, data && data.context);
}
});
}));
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