/*
* jQuery File Upload Processing Plugin
* https://github.com/blueimp/jQuery-File-Upload
*
* Copyright 2012, Sebastian Tschan
* https://blueimp.net
*
* Licensed under the MIT license:
* http://www.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'));
} 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: {
// The list of processing actions:
processQueue: [
/*
{
action: 'log',
type: 'debug'
}
*/
],
add: function (e, data) {
var $this = $(this);
data.process(function () {
return $this.fileupload('process', data);
});
originalAdd.call(this, e, data);
}
},
processActions: {
/*
log: function (data, options) {
console[options.type](
'Processing "' + data.files[data.index].name + '"'
);
}
*/
},
_processFile: function (data, originalData) {
var that = this,
dfd = $.Deferred().resolveWith(that, [data]),
chain = dfd.promise();
this._trigger('process', null, data);
$.each(data.processQueue, function (i, settings) {
var func = function (data) {
if (originalData.errorThrown) {
return $.Deferred()
.rejectWith(that, [originalData]).promise();
}
return that.processActions[settings.action].call(
that,
data,
settings
);
};
chain = chain.pipe(func, settings.always && func);
});
chain
.done(function () {
that._trigger('processdone', null, data);
that._trigger('processalways', null, data);
})
.fail(function () {
that._trigger('processfail', null, data);
that._trigger('processalways', null, data);
});
return chain;
},
// Replaces the settings of each processQueue item that
// are strings starting with an "@", using the remaining
// substring as key for the option map,
// e.g. "@autoUpload" is replaced with options.autoUpload:
_transformProcessQueue: function (options) {
var processQueue = [];
$.each(options.processQueue, function () {
var settings = {},
action = this.action,
prefix = this.prefix === true ? action : this.prefix;
$.each(this, function (key, value) {
if ($.type(value) === 'string' &&
value.charAt(0) === '@') {
settings[key] = options[
value.slice(1) || (prefix ? prefix +
key.charAt(0).toUpperCase() + key.slice(1) : key)
];
} else {
settings[key] = value;
}
});
processQueue.push(settings);
});
options.processQueue = processQueue;
},
// Returns the number of files currently in the processsing queue:
processing: function () {
return this._processing;
},
// Processes the files given as files property of the data parameter,
// returns a Promise object that allows to bind callbacks:
process: function (data) {
var that = this,
options = $.extend({}, this.options, data);
if (options.processQueue && options.processQueue.length) {
this._transformProcessQueue(options);
if (this._processing === 0) {
this._trigger('processstart');
}
$.each(data.files, function (index) {
var opts = index ? $.extend({}, options) : options,
func = function () {
if (data.errorThrown) {
return $.Deferred()
.rejectWith(that, [data]).promise();
}
return that._processFile(opts, data);
};
opts.index = index;
that._processing += 1;
that._processingQueue = that._processingQueue.pipe(func, func)
.always(function () {
that._processing -= 1;
if (that._processing === 0) {
that._trigger('processstop');
}
});
});
}
return this._processingQueue;
},
_create: function () {
this._super();
this._processing = 0;
this._processingQueue = $.Deferred().resolveWith(this)
.promise();
}
});
}));
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