866 lines
38 KiB
JavaScript
866 lines
38 KiB
JavaScript
/*
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* jQuery File Upload Plugin 5.9
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* https://github.com/blueimp/jQuery-File-Upload
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*
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* Copyright 2010, Sebastian Tschan
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* https://blueimp.net
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*
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* Licensed under the MIT license:
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* http://www.opensource.org/licenses/MIT
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*/
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/*jslint nomen: true, unparam: true, regexp: true */
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/*global define, window, document, Blob, FormData, location */
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(function (factory) {
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'use strict';
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if (typeof define === 'function' && define.amd) {
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// Register as an anonymous AMD module:
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define([
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'jquery',
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'jquery.ui.widget'
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], factory);
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} else {
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// Browser globals:
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factory(window.jQuery);
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}
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}(function ($) {
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'use strict';
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// The FileReader API is not actually used, but works as feature detection,
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// as e.g. Safari supports XHR file uploads via the FormData API,
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// but not non-multipart XHR file uploads:
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$.support.xhrFileUpload = !!(window.XMLHttpRequestUpload && window.FileReader);
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$.support.xhrFormDataFileUpload = !!window.FormData;
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// The fileupload widget listens for change events on file input fields defined
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// via fileInput setting and paste or drop events of the given dropZone.
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// In addition to the default jQuery Widget methods, the fileupload widget
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// exposes the "add" and "send" methods, to add or directly send files using
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// the fileupload API.
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// By default, files added via file input selection, paste, drag & drop or
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// "add" method are uploaded immediately, but it is possible to override
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// the "add" callback option to queue file uploads.
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$.widget('blueimp.fileupload', {
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options: {
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// The namespace used for event handler binding on the dropZone and
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// fileInput collections.
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// If not set, the name of the widget ("fileupload") is used.
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namespace: undefined,
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// The drop target collection, by the default the complete document.
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// Set to null or an empty collection to disable drag & drop support:
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dropZone: $(document),
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// The file input field collection, that is listened for change events.
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// If undefined, it is set to the file input fields inside
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// of the widget element on plugin initialization.
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// Set to null or an empty collection to disable the change listener.
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fileInput: undefined,
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// By default, the file input field is replaced with a clone after
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// each input field change event. This is required for iframe transport
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// queues and allows change events to be fired for the same file
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// selection, but can be disabled by setting the following option to false:
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replaceFileInput: true,
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// The parameter name for the file form data (the request argument name).
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// If undefined or empty, the name property of the file input field is
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// used, or "files[]" if the file input name property is also empty:
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paramName: undefined,
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// By default, each file of a selection is uploaded using an individual
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// request for XHR type uploads. Set to false to upload file
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// selections in one request each:
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singleFileUploads: true,
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// To limit the number of files uploaded with one XHR request,
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// set the following option to an integer greater than 0:
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limitMultiFileUploads: undefined,
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// Set the following option to true to issue all file upload requests
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// in a sequential order:
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sequentialUploads: false,
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// To limit the number of concurrent uploads,
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// set the following option to an integer greater than 0:
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limitConcurrentUploads: undefined,
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// Set the following option to true to force iframe transport uploads:
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forceIframeTransport: false,
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// Set the following option to the location of a redirect url on the
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// origin server, for cross-domain iframe transport uploads:
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redirect: undefined,
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// The parameter name for the redirect url, sent as part of the form
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// data and set to 'redirect' if this option is empty:
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redirectParamName: undefined,
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// Set the following option to the location of a postMessage window,
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// to enable postMessage transport uploads:
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postMessage: undefined,
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// By default, XHR file uploads are sent as multipart/form-data.
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// The iframe transport is always using multipart/form-data.
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// Set to false to enable non-multipart XHR uploads:
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multipart: true,
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// To upload large files in smaller chunks, set the following option
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// to a preferred maximum chunk size. If set to 0, null or undefined,
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// or the browser does not support the required Blob API, files will
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// be uploaded as a whole.
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maxChunkSize: undefined,
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// When a non-multipart upload or a chunked multipart upload has been
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// aborted, this option can be used to resume the upload by setting
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// it to the size of the already uploaded bytes. This option is most
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// useful when modifying the options object inside of the "add" or
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// "send" callbacks, as the options are cloned for each file upload.
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uploadedBytes: undefined,
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// By default, failed (abort or error) file uploads are removed from the
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// global progress calculation. Set the following option to false to
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// prevent recalculating the global progress data:
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recalculateProgress: true,
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// Additional form data to be sent along with the file uploads can be set
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// using this option, which accepts an array of objects with name and
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// value properties, a function returning such an array, a FormData
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// object (for XHR file uploads), or a simple object.
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// The form of the first fileInput is given as parameter to the function:
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formData: function (form) {
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return form.serializeArray();
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},
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// The add callback is invoked as soon as files are added to the fileupload
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// widget (via file input selection, drag & drop, paste or add API call).
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// If the singleFileUploads option is enabled, this callback will be
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// called once for each file in the selection for XHR file uplaods, else
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// once for each file selection.
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// The upload starts when the submit method is invoked on the data parameter.
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// The data object contains a files property holding the added files
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// and allows to override plugin options as well as define ajax settings.
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// Listeners for this callback can also be bound the following way:
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// .bind('fileuploadadd', func);
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// data.submit() returns a Promise object and allows to attach additional
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// handlers using jQuery's Deferred callbacks:
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// data.submit().done(func).fail(func).always(func);
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add: function (e, data) {
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data.submit();
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},
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// Other callbacks:
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// Callback for the submit event of each file upload:
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// submit: function (e, data) {}, // .bind('fileuploadsubmit', func);
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// Callback for the start of each file upload request:
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// send: function (e, data) {}, // .bind('fileuploadsend', func);
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// Callback for successful uploads:
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// done: function (e, data) {}, // .bind('fileuploaddone', func);
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// Callback for failed (abort or error) uploads:
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// fail: function (e, data) {}, // .bind('fileuploadfail', func);
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// Callback for completed (success, abort or error) requests:
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// always: function (e, data) {}, // .bind('fileuploadalways', func);
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// Callback for upload progress events:
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// progress: function (e, data) {}, // .bind('fileuploadprogress', func);
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// Callback for global upload progress events:
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// progressall: function (e, data) {}, // .bind('fileuploadprogressall', func);
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// Callback for uploads start, equivalent to the global ajaxStart event:
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// start: function (e) {}, // .bind('fileuploadstart', func);
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// Callback for uploads stop, equivalent to the global ajaxStop event:
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// stop: function (e) {}, // .bind('fileuploadstop', func);
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// Callback for change events of the fileInput collection:
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// change: function (e, data) {}, // .bind('fileuploadchange', func);
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// Callback for paste events to the dropZone collection:
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// paste: function (e, data) {}, // .bind('fileuploadpaste', func);
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// Callback for drop events of the dropZone collection:
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// drop: function (e, data) {}, // .bind('fileuploaddrop', func);
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// Callback for dragover events of the dropZone collection:
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// dragover: function (e) {}, // .bind('fileuploaddragover', func);
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// The plugin options are used as settings object for the ajax calls.
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// The following are jQuery ajax settings required for the file uploads:
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processData: false,
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contentType: false,
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cache: false
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},
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// A list of options that require a refresh after assigning a new value:
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_refreshOptionsList: [
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'namespace',
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'dropZone',
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'fileInput',
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'multipart',
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'forceIframeTransport'
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],
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_isXHRUpload: function (options) {
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return !options.forceIframeTransport &&
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((!options.multipart && $.support.xhrFileUpload) ||
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$.support.xhrFormDataFileUpload);
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},
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_getFormData: function (options) {
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var formData;
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if (typeof options.formData === 'function') {
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return options.formData(options.form);
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} else if ($.isArray(options.formData)) {
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return options.formData;
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} else if (options.formData) {
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formData = [];
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$.each(options.formData, function (name, value) {
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formData.push({name: name, value: value});
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});
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return formData;
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}
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return [];
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},
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_getTotal: function (files) {
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var total = 0;
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$.each(files, function (index, file) {
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total += file.size || 1;
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});
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return total;
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},
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_onProgress: function (e, data) {
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if (e.lengthComputable) {
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var total = data.total || this._getTotal(data.files),
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loaded = parseInt(
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e.loaded / e.total * (data.chunkSize || total),
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10
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) + (data.uploadedBytes || 0);
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this._loaded += loaded - (data.loaded || data.uploadedBytes || 0);
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data.lengthComputable = true;
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data.loaded = loaded;
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data.total = total;
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// Trigger a custom progress event with a total data property set
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// to the file size(s) of the current upload and a loaded data
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// property calculated accordingly:
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this._trigger('progress', e, data);
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// Trigger a global progress event for all current file uploads,
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// including ajax calls queued for sequential file uploads:
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this._trigger('progressall', e, {
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lengthComputable: true,
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loaded: this._loaded,
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total: this._total
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});
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}
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},
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_initProgressListener: function (options) {
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var that = this,
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xhr = options.xhr ? options.xhr() : $.ajaxSettings.xhr();
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// Accesss to the native XHR object is required to add event listeners
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// for the upload progress event:
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if (xhr.upload) {
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$(xhr.upload).bind('progress', function (e) {
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var oe = e.originalEvent;
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// Make sure the progress event properties get copied over:
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e.lengthComputable = oe.lengthComputable;
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e.loaded = oe.loaded;
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e.total = oe.total;
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that._onProgress(e, options);
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});
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options.xhr = function () {
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return xhr;
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};
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}
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},
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_initXHRData: function (options) {
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var formData,
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file = options.files[0],
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// Ignore non-multipart setting if not supported:
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multipart = options.multipart || !$.support.xhrFileUpload;
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if (!multipart || options.blob) {
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// For non-multipart uploads and chunked uploads,
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// file meta data is not part of the request body,
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// so we transmit this data as part of the HTTP headers.
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// For cross domain requests, these headers must be allowed
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// via Access-Control-Allow-Headers or removed using
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// the beforeSend callback:
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options.headers = $.extend(options.headers, {
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'X-File-Name': file.name,
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'X-File-Type': file.type,
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'X-File-Size': file.size
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});
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if (!options.blob) {
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// Non-chunked non-multipart upload:
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options.contentType = file.type;
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options.data = file;
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} else if (!multipart) {
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// Chunked non-multipart upload:
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options.contentType = 'application/octet-stream';
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options.data = options.blob;
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}
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}
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if (multipart && $.support.xhrFormDataFileUpload) {
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if (options.postMessage) {
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// window.postMessage does not allow sending FormData
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// objects, so we just add the File/Blob objects to
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// the formData array and let the postMessage window
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// create the FormData object out of this array:
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formData = this._getFormData(options);
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if (options.blob) {
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formData.push({
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name: options.paramName,
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value: options.blob
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});
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} else {
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$.each(options.files, function (index, file) {
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formData.push({
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name: options.paramName,
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value: file
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});
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});
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}
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} else {
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if (options.formData instanceof FormData) {
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formData = options.formData;
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} else {
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formData = new FormData();
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$.each(this._getFormData(options), function (index, field) {
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formData.append(field.name, field.value);
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});
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}
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if (options.blob) {
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formData.append(options.paramName, options.blob, file.name);
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} else {
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$.each(options.files, function (index, file) {
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// File objects are also Blob instances.
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// This check allows the tests to run with
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// dummy objects:
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if (file instanceof Blob) {
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formData.append(options.paramName, file, file.name);
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}
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});
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}
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}
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options.data = formData;
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}
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// Blob reference is not needed anymore, free memory:
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options.blob = null;
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},
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_initIframeSettings: function (options) {
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// Setting the dataType to iframe enables the iframe transport:
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options.dataType = 'iframe ' + (options.dataType || '');
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// The iframe transport accepts a serialized array as form data:
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options.formData = this._getFormData(options);
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// Add redirect url to form data on cross-domain uploads:
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if (options.redirect && $('<a></a>').prop('href', options.url)
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.prop('host') !== location.host) {
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options.formData.push({
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name: options.redirectParamName || 'redirect',
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value: options.redirect
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});
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}
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},
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_initDataSettings: function (options) {
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if (this._isXHRUpload(options)) {
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if (!this._chunkedUpload(options, true)) {
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if (!options.data) {
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this._initXHRData(options);
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}
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this._initProgressListener(options);
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}
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if (options.postMessage) {
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// Setting the dataType to postmessage enables the
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// postMessage transport:
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options.dataType = 'postmessage ' + (options.dataType || '');
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}
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} else {
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this._initIframeSettings(options, 'iframe');
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}
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},
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_initFormSettings: function (options) {
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// Retrieve missing options from the input field and the
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// associated form, if available:
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if (!options.form || !options.form.length) {
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options.form = $(options.fileInput.prop('form'));
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}
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if (!options.paramName) {
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options.paramName = options.fileInput.prop('name') ||
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'files[]';
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}
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if (!options.url) {
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options.url = options.form.prop('action') || location.href;
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}
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// The HTTP request method must be "POST" or "PUT":
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options.type = (options.type || options.form.prop('method') || '')
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.toUpperCase();
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if (options.type !== 'POST' && options.type !== 'PUT') {
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options.type = 'POST';
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}
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},
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_getAJAXSettings: function (data) {
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var options = $.extend({}, this.options, data);
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this._initFormSettings(options);
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this._initDataSettings(options);
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return options;
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},
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// Maps jqXHR callbacks to the equivalent
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// methods of the given Promise object:
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_enhancePromise: function (promise) {
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promise.success = promise.done;
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promise.error = promise.fail;
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promise.complete = promise.always;
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return promise;
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},
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// Creates and returns a Promise object enhanced with
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// the jqXHR methods abort, success, error and complete:
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_getXHRPromise: function (resolveOrReject, context, args) {
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var dfd = $.Deferred(),
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promise = dfd.promise();
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context = context || this.options.context || promise;
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if (resolveOrReject === true) {
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dfd.resolveWith(context, args);
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} else if (resolveOrReject === false) {
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dfd.rejectWith(context, args);
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}
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promise.abort = dfd.promise;
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return this._enhancePromise(promise);
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},
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// Uploads a file in multiple, sequential requests
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// by splitting the file up in multiple blob chunks.
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// If the second parameter is true, only tests if the file
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// should be uploaded in chunks, but does not invoke any
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// upload requests:
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_chunkedUpload: function (options, testOnly) {
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var that = this,
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file = options.files[0],
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fs = file.size,
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ub = options.uploadedBytes = options.uploadedBytes || 0,
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mcs = options.maxChunkSize || fs,
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// Use the Blob methods with the slice implementation
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// according to the W3C Blob API specification:
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slice = file.webkitSlice || file.mozSlice || file.slice,
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upload,
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n,
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jqXHR,
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pipe;
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if (!(this._isXHRUpload(options) && slice && (ub || mcs < fs)) ||
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options.data) {
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return false;
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}
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if (testOnly) {
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return true;
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}
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if (ub >= fs) {
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file.error = 'uploadedBytes';
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return this._getXHRPromise(
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false,
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options.context,
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[null, 'error', file.error]
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);
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}
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// n is the number of blobs to upload,
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// calculated via filesize, uploaded bytes and max chunk size:
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n = Math.ceil((fs - ub) / mcs);
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// The chunk upload method accepting the chunk number as parameter:
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upload = function (i) {
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if (!i) {
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return that._getXHRPromise(true, options.context);
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}
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// Upload the blobs in sequential order:
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return upload(i -= 1).pipe(function () {
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// Clone the options object for each chunk upload:
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var o = $.extend({}, options);
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o.blob = slice.call(
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file,
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ub + i * mcs,
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ub + (i + 1) * mcs
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);
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// Store the current chunk size, as the blob itself
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// will be dereferenced after data processing:
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o.chunkSize = o.blob.size;
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// Process the upload data (the blob and potential form data):
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that._initXHRData(o);
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// Add progress listeners for this chunk upload:
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that._initProgressListener(o);
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jqXHR = ($.ajax(o) || that._getXHRPromise(false, o.context))
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.done(function () {
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// Create a progress event if upload is done and
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// no progress event has been invoked for this chunk:
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if (!o.loaded) {
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that._onProgress($.Event('progress', {
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lengthComputable: true,
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loaded: o.chunkSize,
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total: o.chunkSize
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}), o);
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}
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options.uploadedBytes = o.uploadedBytes +=
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o.chunkSize;
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});
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return jqXHR;
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});
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};
|
|
// Return the piped Promise object, enhanced with an abort method,
|
|
// which is delegated to the jqXHR object of the current upload,
|
|
// and jqXHR callbacks mapped to the equivalent Promise methods:
|
|
pipe = upload(n);
|
|
pipe.abort = function () {
|
|
return jqXHR.abort();
|
|
};
|
|
return this._enhancePromise(pipe);
|
|
},
|
|
|
|
_beforeSend: function (e, data) {
|
|
if (this._active === 0) {
|
|
// the start callback is triggered when an upload starts
|
|
// and no other uploads are currently running,
|
|
// equivalent to the global ajaxStart event:
|
|
this._trigger('start');
|
|
}
|
|
this._active += 1;
|
|
// Initialize the global progress values:
|
|
this._loaded += data.uploadedBytes || 0;
|
|
this._total += this._getTotal(data.files);
|
|
},
|
|
|
|
_onDone: function (result, textStatus, jqXHR, options) {
|
|
if (!this._isXHRUpload(options)) {
|
|
// Create a progress event for each iframe load:
|
|
this._onProgress($.Event('progress', {
|
|
lengthComputable: true,
|
|
loaded: 1,
|
|
total: 1
|
|
}), options);
|
|
}
|
|
options.result = result;
|
|
options.textStatus = textStatus;
|
|
options.jqXHR = jqXHR;
|
|
this._trigger('done', null, options);
|
|
},
|
|
|
|
_onFail: function (jqXHR, textStatus, errorThrown, options) {
|
|
options.jqXHR = jqXHR;
|
|
options.textStatus = textStatus;
|
|
options.errorThrown = errorThrown;
|
|
this._trigger('fail', null, options);
|
|
if (options.recalculateProgress) {
|
|
// Remove the failed (error or abort) file upload from
|
|
// the global progress calculation:
|
|
this._loaded -= options.loaded || options.uploadedBytes || 0;
|
|
this._total -= options.total || this._getTotal(options.files);
|
|
}
|
|
},
|
|
|
|
_onAlways: function (jqXHRorResult, textStatus, jqXHRorError, options) {
|
|
this._active -= 1;
|
|
options.textStatus = textStatus;
|
|
if (jqXHRorError && jqXHRorError.always) {
|
|
options.jqXHR = jqXHRorError;
|
|
options.result = jqXHRorResult;
|
|
} else {
|
|
options.jqXHR = jqXHRorResult;
|
|
options.errorThrown = jqXHRorError;
|
|
}
|
|
this._trigger('always', null, options);
|
|
if (this._active === 0) {
|
|
// The stop callback is triggered when all uploads have
|
|
// been completed, equivalent to the global ajaxStop event:
|
|
this._trigger('stop');
|
|
// Reset the global progress values:
|
|
this._loaded = this._total = 0;
|
|
}
|
|
},
|
|
|
|
_onSend: function (e, data) {
|
|
var that = this,
|
|
jqXHR,
|
|
slot,
|
|
pipe,
|
|
options = that._getAJAXSettings(data),
|
|
send = function (resolve, args) {
|
|
that._sending += 1;
|
|
jqXHR = jqXHR || (
|
|
(resolve !== false &&
|
|
that._trigger('send', e, options) !== false &&
|
|
(that._chunkedUpload(options) || $.ajax(options))) ||
|
|
that._getXHRPromise(false, options.context, args)
|
|
).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._sending -= 1;
|
|
that._onAlways(
|
|
jqXHRorResult,
|
|
textStatus,
|
|
jqXHRorError,
|
|
options
|
|
);
|
|
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 (!nextSlot.isRejected()) {
|
|
nextSlot.resolve();
|
|
break;
|
|
}
|
|
nextSlot = that._slots.shift();
|
|
}
|
|
}
|
|
});
|
|
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 {
|
|
pipe = (this._sequence = this._sequence.pipe(send, send));
|
|
}
|
|
// 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 () {
|
|
var args = [undefined, 'abort', 'abort'];
|
|
if (!jqXHR) {
|
|
if (slot) {
|
|
slot.rejectWith(args);
|
|
}
|
|
return send(false, args);
|
|
}
|
|
return jqXHR.abort();
|
|
};
|
|
return this._enhancePromise(pipe);
|
|
}
|
|
return send();
|
|
},
|
|
|
|
_onAdd: function (e, data) {
|
|
var that = this,
|
|
result = true,
|
|
options = $.extend({}, this.options, data),
|
|
limit = options.limitMultiFileUploads,
|
|
fileSet,
|
|
i;
|
|
if (!(options.singleFileUploads || limit) ||
|
|
!this._isXHRUpload(options)) {
|
|
fileSet = [data.files];
|
|
} else if (!options.singleFileUploads && limit) {
|
|
fileSet = [];
|
|
for (i = 0; i < data.files.length; i += limit) {
|
|
fileSet.push(data.files.slice(i, i + limit));
|
|
}
|
|
}
|
|
data.originalFiles = data.files;
|
|
$.each(fileSet || data.files, function (index, element) {
|
|
var files = fileSet ? element : [element],
|
|
newData = $.extend({}, data, {files: files});
|
|
newData.submit = function () {
|
|
newData.jqXHR = this.jqXHR =
|
|
(that._trigger('submit', e, this) !== false) &&
|
|
that._onSend(e, this);
|
|
return this.jqXHR;
|
|
};
|
|
return (result = that._trigger('add', e, newData));
|
|
});
|
|
return result;
|
|
},
|
|
|
|
// File Normalization for Gecko 1.9.1 (Firefox 3.5) support:
|
|
_normalizeFile: function (index, file) {
|
|
if (file.name === undefined && file.size === undefined) {
|
|
file.name = file.fileName;
|
|
file.size = file.fileSize;
|
|
}
|
|
},
|
|
|
|
_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
|
|
// collection 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;
|
|
}
|
|
},
|
|
|
|
_onChange: function (e) {
|
|
var that = e.data.fileupload,
|
|
data = {
|
|
files: $.each($.makeArray(e.target.files), that._normalizeFile),
|
|
fileInput: $(e.target),
|
|
form: $(e.target.form)
|
|
};
|
|
if (!data.files.length) {
|
|
// 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:
|
|
data.files = [{name: e.target.value.replace(/^.*\\/, '')}];
|
|
}
|
|
if (that.options.replaceFileInput) {
|
|
that._replaceFileInput(data.fileInput);
|
|
}
|
|
if (that._trigger('change', e, data) === false ||
|
|
that._onAdd(e, data) === false) {
|
|
return false;
|
|
}
|
|
},
|
|
|
|
_onPaste: function (e) {
|
|
var that = e.data.fileupload,
|
|
cbd = e.originalEvent.clipboardData,
|
|
items = (cbd && cbd.items) || [],
|
|
data = {files: []};
|
|
$.each(items, function (index, item) {
|
|
var file = item.getAsFile && item.getAsFile();
|
|
if (file) {
|
|
data.files.push(file);
|
|
}
|
|
});
|
|
if (that._trigger('paste', e, data) === false ||
|
|
that._onAdd(e, data) === false) {
|
|
return false;
|
|
}
|
|
},
|
|
|
|
_onDrop: function (e) {
|
|
var that = e.data.fileupload,
|
|
dataTransfer = e.dataTransfer = e.originalEvent.dataTransfer,
|
|
data = {
|
|
files: $.each(
|
|
$.makeArray(dataTransfer && dataTransfer.files),
|
|
that._normalizeFile
|
|
)
|
|
};
|
|
if (that._trigger('drop', e, data) === false ||
|
|
that._onAdd(e, data) === false) {
|
|
return false;
|
|
}
|
|
e.preventDefault();
|
|
},
|
|
|
|
_onDragOver: function (e) {
|
|
var that = e.data.fileupload,
|
|
dataTransfer = e.dataTransfer = e.originalEvent.dataTransfer;
|
|
if (that._trigger('dragover', e) === false) {
|
|
return false;
|
|
}
|
|
if (dataTransfer) {
|
|
dataTransfer.dropEffect = dataTransfer.effectAllowed = 'copy';
|
|
}
|
|
e.preventDefault();
|
|
},
|
|
|
|
_initEventHandlers: function () {
|
|
var ns = this.options.namespace;
|
|
if (this._isXHRUpload(this.options)) {
|
|
this.options.dropZone
|
|
.bind('dragover.' + ns, {fileupload: this}, this._onDragOver)
|
|
.bind('drop.' + ns, {fileupload: this}, this._onDrop)
|
|
.bind('paste.' + ns, {fileupload: this}, this._onPaste);
|
|
}
|
|
this.options.fileInput
|
|
.bind('change.' + ns, {fileupload: this}, this._onChange);
|
|
},
|
|
|
|
_destroyEventHandlers: function () {
|
|
var ns = this.options.namespace;
|
|
this.options.dropZone
|
|
.unbind('dragover.' + ns, this._onDragOver)
|
|
.unbind('drop.' + ns, this._onDrop)
|
|
.unbind('paste.' + ns, this._onPaste);
|
|
this.options.fileInput
|
|
.unbind('change.' + ns, this._onChange);
|
|
},
|
|
|
|
_setOption: function (key, value) {
|
|
var refresh = $.inArray(key, this._refreshOptionsList) !== -1;
|
|
if (refresh) {
|
|
this._destroyEventHandlers();
|
|
}
|
|
$.Widget.prototype._setOption.call(this, key, value);
|
|
if (refresh) {
|
|
this._initSpecialOptions();
|
|
this._initEventHandlers();
|
|
}
|
|
},
|
|
|
|
_initSpecialOptions: function () {
|
|
var options = this.options;
|
|
if (options.fileInput === undefined) {
|
|
options.fileInput = this.element.is('input:file') ?
|
|
this.element : this.element.find('input:file');
|
|
} else if (!(options.fileInput instanceof $)) {
|
|
options.fileInput = $(options.fileInput);
|
|
}
|
|
if (!(options.dropZone instanceof $)) {
|
|
options.dropZone = $(options.dropZone);
|
|
}
|
|
},
|
|
|
|
_create: function () {
|
|
var options = this.options,
|
|
dataOpts = $.extend({}, this.element.data());
|
|
dataOpts[this.widgetName] = undefined;
|
|
$.extend(options, dataOpts);
|
|
options.namespace = options.namespace || this.widgetName;
|
|
this._initSpecialOptions();
|
|
this._slots = [];
|
|
this._sequence = this._getXHRPromise(true);
|
|
this._sending = this._active = this._loaded = this._total = 0;
|
|
this._initEventHandlers();
|
|
},
|
|
|
|
destroy: function () {
|
|
this._destroyEventHandlers();
|
|
$.Widget.prototype.destroy.call(this);
|
|
},
|
|
|
|
enable: function () {
|
|
$.Widget.prototype.enable.call(this);
|
|
this._initEventHandlers();
|
|
},
|
|
|
|
disable: function () {
|
|
this._destroyEventHandlers();
|
|
$.Widget.prototype.disable.call(this);
|
|
},
|
|
|
|
// 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) {
|
|
if (!data || this.options.disabled) {
|
|
return;
|
|
}
|
|
data.files = $.each($.makeArray(data.files), this._normalizeFile);
|
|
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 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) {
|
|
data.files = $.each($.makeArray(data.files), this._normalizeFile);
|
|
if (data.files.length) {
|
|
return this._onSend(null, data);
|
|
}
|
|
}
|
|
return this._getXHRPromise(false, data && data.context);
|
|
}
|
|
|
|
});
|
|
|
|
}));
|