Is there a possibility to filter content in a grid similar to the FilterRow extension?

I found those two extensions (for Ext JS 3):
  • Ext.ux.grid.FilterRow by Rene Saarsoo
  • Ext.ux.grid.FilterRow by Surinder Singh

Both didn't work for me in Ext JS 4 PR5.
Am I doing something wrong - or is there another solution?

TIA - Marcel