Ext.define('Ext.rtl.selection.TreeModel', { override: 'Ext.selection.TreeModel', onKeyRight: function(e, t) { if (this.view.getHierarchyState().rtl) { this.navCollapse(e, t); } else { this.callParent(arguments); } }, onKeyLeft: function(e, t) { if (this.view.getHierarchyState().rtl) { this.navExpand(e, t); } else { this.callParent(arguments); } } });