jQuery File Upload BeforeAdd Hook

jquery.fileupload-beforeadd.js

/*
 * jQuery File Upload Processing Plugin
 * https://github.com/blueimp/jQuery-File-Upload
 *
 * Copyright 2012, Sebastian Tschan
 * https://blueimp.net
 *
 * Licensed under the MIT license:
 * https://opensource.org/licenses/MIT
 */

/* jshint nomen:false */
/* global define, require, window */

;(function (factory) {
    'use strict';
    if (typeof define === 'function' && define.amd) {
        // Register as an anonymous AMD module:
        define([
            'jquery',
            './jquery.fileupload'
        ], factory);
    } else if (typeof exports === 'object') {
        // Node/CommonJS:
        factory(
            require('jquery'),
            require('./jquery.fileupload')
        );
    } else {
        // Browser globals:
        factory(
            window.jQuery
        );
    }
}(function ($) {
    'use strict';

    // var originalAdd = $.blueimp.fileupload.prototype.options.add;

    // The File Upload Processing plugin extends the fileupload widget
    // with file processing functionality:
    $.widget('blueimp.fileupload', $.blueimp.fileupload, {

        options: {
            onBeforeAdd: function (e, data) {
                // no-op
            }
        },

        _onAdd: function (e, data) {
            this.options.onBeforeAdd(e, data);
            this._super(e, data);
        }

    });

}));