    Ext.define('Ext.rtl.resizer.ResizeTracker', {
        override: 'Ext.resizer.ResizeTracker',

        _rtlRegionNames: {
            south: 'south',
            north: 'north',
            east: 'west',
            west: 'east',
            northeast: 'northwest',
            southeast: 'southwest',
            southwest: 'southeast',
            northwest: 'northeast'
        },

        convertRegionName: function(name) {
            return (Ext.rootHierarchyState.rtl) ? this._rtlRegionNames[name] : name;
        }
    });