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Diffstat (limited to 'apps/files_external/js/rollingqueue.js')
| -rw-r--r-- | apps/files_external/js/rollingqueue.js | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/apps/files_external/js/rollingqueue.js b/apps/files_external/js/rollingqueue.js new file mode 100644 index 00000000000..58cb0fb22f0 --- /dev/null +++ b/apps/files_external/js/rollingqueue.js @@ -0,0 +1,137 @@ +/** + * ownCloud + * + * @author Juan Pablo Villafañez Ramos <jvillafanez@owncloud.com> + * @author Jesus Macias Portela <jesus@owncloud.com> + * @copyright (C) 2014 ownCloud, Inc. + * + * This file is licensed under the Affero General Public License version 3 + * or later. + * + * See the COPYING-README file. + * + */ + +(function(){ +/** + * Launch several functions at thee same time. The number of functions + * running at the same time is controlled by the queueWindow param + * + * The function list come in the following format: + * + * var flist = [ + * { + * funcName: function () { + * var d = $.Deferred(); + * setTimeout(function(){d.resolve();}, 1000); + * return d; + * } + * }, + * { + * funcName: $.get, + * funcArgs: [ + * OC.filePath('files_external', 'ajax', 'connectivityCheck.php'), + * {}, + * function () { + * console.log('titoooo'); + * } + * ] + * }, + * { + * funcName: $.get, + * funcArgs: [ + * OC.filePath('files_external', 'ajax', 'connectivityCheck.php') + * ], + * done: function () { + * console.log('yuupi'); + * }, + * always: function () { + * console.log('always done'); + * } + * } + *]; + * + * functions MUST implement the deferred interface + * + * @param functionList list of functions that the queue will run + * (check example above for the expected format) + * @param queueWindow specify the number of functions that will + * be executed at the same time + */ +var RollingQueue = function (functionList, queueWindow, callback) { + this.queueWindow = queueWindow || 1; + this.functionList = functionList; + this.callback = callback; + this.counter = 0; + this.runQueue = function() { + this.callbackCalled = false; + this.deferredsList = []; + if (!$.isArray(this.functionList)) { + throw "functionList must be an array"; + } + + for (i = 0; i < this.queueWindow; i++) { + this.launchNext(); + } + }; + + this.hasNext = function() { + return (this.counter in this.functionList); + }; + + this.launchNext = function() { + var currentCounter = this.counter++; + if (currentCounter in this.functionList) { + var funcData = this.functionList[currentCounter]; + if ($.isFunction(funcData.funcName)) { + var defObj = funcData.funcName.apply(funcData.funcName, funcData.funcArgs); + this.deferredsList.push(defObj); + if ($.isFunction(funcData.done)) { + defObj.done(funcData.done); + } + + if ($.isFunction(funcData.fail)) { + defObj.fail(funcData.fail); + } + + if ($.isFunction(funcData.always)) { + defObj.always(funcData.always); + } + + if (this.hasNext()) { + var self = this; + defObj.always(function(){ + _.defer($.proxy(function(){ + self.launchNext(); + }, self)); + }); + } else { + if (!this.callbackCalled) { + this.callbackCalled = true; + if ($.isFunction(this.callback)) { + $.when.apply($, this.deferredsList) + .always($.proxy(function(){ + this.callback(); + }, this) + ); + } + } + } + return defObj; + } + } + return false; + }; +}; + +if (!OCA.External) { + OCA.External = {}; +} + +if (!OCA.External.StatusManager) { + OCA.External.StatusManager = {}; +} + +OCA.External.StatusManager.RollingQueue = RollingQueue; + +})();
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