code: private static void createGridCellFilter(final String[] columnOrder, final Grid grid, final Class dataType) {
  		if (columnOrder != null) {
  			final GridCellFilter filter = new GridCellFilter(grid, dataType);
  			for (final String column : columnOrder) {
  				if (grid.getColumn(column) != null) {
  					filter.setTextFilter(column, true, true);
  				}
  			}
  		}
  	}
docs: Creates the grid cell filter.
  
  @param columnOrder
  the column order
  @param grid
  the grid
  @param dataType
  the data type