ref: master
public/javascripts/vendor/jquery.fileupload.js
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/* * jQuery File Upload Plugin 5.40.3 * 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, 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 { // 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); // 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 the complete document. // Set to null to disable paste support: pasteZone: $(document), // 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 }, // 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 (limitSize && (!filesLength || 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 (input) { var inputClone = input.clone(true); $('<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(); // 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.fileInput); } 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: function (e) { e.dataTransfer = e.originalEvent && e.originalEvent.dataTransfer; var dataTransfer = e.dataTransfer; if (dataTransfer && $.inArray('Files', dataTransfer.types) !== -1 && this._trigger( 'dragover', $.Event('dragover', {delegatedEvent: e}) ) !== false) { e.preventDefault(); dataTransfer.dropEffect = 'copy'; } }, _initEventHandlers: function () { if (this._isXHRUpload(this.options)) { this._on(this.options.dropZone, { dragover: this._onDragOver, drop: this._onDrop }); this._on(this.options.pasteZone, { paste: this._onPaste }); } if ($.support.fileInput) { this._on(this.options.fileInput, { change: this._onChange }); } }, _destroyEventHandlers: function () { this._off(this.options.dropZone, '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, clone = $(this.element[0].cloneNode(false)); // Initialize options set via HTML5 data-attributes: $.each( clone.data(), function (key, value) { var dataAttributeName = 'data-' + // Convert camelCase to hyphen-ated key: key.replace(/([a-z])([A-Z])/g, '$1-$2').toLowerCase(); if (clone.attr(dataAttributeName)) { 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); } }); })); |