/** * @private */Ext.define('Ext.fx.easing.Abstract', { config: { startTime: 0, startValue: 0 }, isEasing: true, isEnded: false, constructor: function(config) { this.initConfig(config); return this; }, applyStartTime: function(startTime) { if (!startTime) { startTime = Ext.Date.now(); } return startTime; }, updateStartTime: function(startTime) { this.reset(); }, reset: function() { this.isEnded = false; }, getValue: Ext.emptyFn});