public void deleteColumn(Object[] columns, ExecutionEvent event) throws ExecutionException {
TableComposite composite = getCurrentTableStyleComposite(event);
CsvTable table = composite.getCsvTable();
for(Object obj : columns) {
ColumnHeader columnHeader = (ColumnHeader)obj;
table.removeColumn(columnHeader);
}
composite.setDirty(true);
composite.refresh(RefreshMode.ALL);
}