Ext.define('Ext.rtl.layout.container.Box', { override: 'Ext.layout.container.Box', initLayout: function() { var me = this; if (me.owner.getInherited().rtl) { me.names = Ext.Object.chain(me.names); Ext.apply(me.names, me.rtlNames); } me.callParent(arguments); }, getRenderData: function () { var renderData = this.callParent(); if (this.owner.getInherited().rtl) { renderData.targetElCls = (renderData.targetElCls || '') + ' ' + Ext.baseCSSPrefix + 'rtl'; } return renderData; }});