[Files.app] Split the JavaScript files into subdirectories: common, background, and foreground

chrome/browser/resources/file_manager/js/metadata/function_parallel.js

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-'use strict';
-
-/**
- * @class FunctionSequence to invoke steps in sequence
- *
- * @param {string} name  // TODO(JSDOC).
- * @param {Array.<function>} steps Array of functions to invoke in parallel.
- * @param {Object} logger  // TODO(JSDOC).
- * @param {function()} callback Callback to invoke on success.
- * @param {function(string)} failureCallback Callback to invoke on failure.
- * @constructor
- */
-function FunctionParallel(name, steps, logger, callback, failureCallback) {
-  // Private variables hidden in closure
-  this.currentStepIdx_ = -1;
-  this.failed_ = false;
-  this.steps_ = steps;
-  this.callback_ = callback;
-  this.failureCallback_ = failureCallback;
-  this.logger = logger;
-  this.name = name;
-
-  this.remaining = this.steps_.length;
-
-  this.nextStep = this.nextStep_.bind(this);
-  this.onError = this.onError_.bind(this);
-  this.apply = this.start.bind(this);
-}
-
-
-/**
- * Error handling function, which fires error callback.
- *
- * @param {string} err Error message.
- * @private
- */
-FunctionParallel.prototype.onError_ = function(err) {
-  if (!this.failed_) {
-    this.failed_ = true;
-    this.failureCallback_(err);
-  }
-};
-
-/**
- * Advances to next step. This method should not be used externally. In external
- * cases should be used nextStep function, which is defined in closure and thus
- * has access to internal variables of functionsequence.
- *
- * @private
- */
-FunctionParallel.prototype.nextStep_ = function() {
-  if (--this.remaining == 0 && !this.failed_) {
-    this.callback_();
-  }
-};
-
-/**
- * This function should be called only once on start, so start all the children
- * at once
- * @param {...} var_args  // TODO(JSDOC).
- */
-FunctionParallel.prototype.start = function(var_args) {
-  this.logger.vlog('Starting [' + this.steps_.length + '] parallel tasks ' +
-                   'with ' + arguments.length + ' argument(s)');
-  if (this.logger.verbose) {
-    for (var j = 0; j < arguments.length; j++) {
-      this.logger.vlog(arguments[j]);
-    }
-  }
-  for (var i = 0; i < this.steps_.length; i++) {
-    this.logger.vlog('Attempting to start step [' + this.steps_[i].name + ']');
-    try {
-      this.steps_[i].apply(this, arguments);
-    } catch (e) {
-      this.onError(e.toString());
-    }
-  }
-};