final FieldsetPanel fs = gridBuilder.newFieldset(getString("searchFilter"));
final TextField<String> searchField = new TextField<String>(InputPanel.WICKET_ID, new PropertyModel<String>(getSearchFilter(),
"searchString"));
searchField.add(WicketUtils.setFocus());
fs.add(new InputPanel(fs.newChildId(), searchField));
fs.add(new IconPanel(fs.newIconChildId(), IconType.HELP, getString("tooltip.lucene.link")).setOnClickLocation(getRequestCycle(),
WebConstants.DOC_LINK_HANDBUCH_LUCENE, true), FieldSetIconPosition.TOP_RIGHT);
}
{
gridBuilder.newSplitPanel(GridSize.COL50);
final FieldsetPanel fs = gridBuilder.newFieldset(getString("label.options")).suppressLabelForWarning();