Smart Field Example to select a time (minute and seconds. hour is always 0). http://www.eclipse.org/forums/index.php/t/855355/

SmartField_Time_Example.java

@Order(10.0)
public class TimeField extends AbstractSmartField<Date> {

  @Override
  protected String getConfiguredLabel() {
    return TEXTS.get("TimeField");
  }

  @Override
  protected Class<? extends ILookupCall<Date>> getConfiguredLookupCall() {
    return TimeLookupCall.class;
  }
}

TimeLookupCall.java

import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.regex.Pattern;

import org.eclipse.scout.commons.DateUtility;
import org.eclipse.scout.commons.exception.ProcessingException;
import org.eclipse.scout.rt.shared.services.lookup.ILookupRow;
import org.eclipse.scout.rt.shared.services.lookup.LocalLookupCall;
import org.eclipse.scout.rt.shared.services.lookup.LookupRow;

public class TimeLookupCall extends LocalLookupCall<Date> {

  private static final long serialVersionUID = 1L;

  @Override
  protected List<? extends ILookupRow<Date>> execCreateLookupRows() throws ProcessingException {
    List<ILookupRow<Date>> rows = new ArrayList<ILookupRow<Date>>();

    Date date = DateUtility.convertDoubleTimeToDate(0);
    for (int i = 0; i < 120; i++) {
      rows.add(createLookupRow(date));
      date = DateUtility.addSeconds(date, 30);
    }
    return rows;
  }

  private ILookupRow<Date> createLookupRow(Date date) {
    return new LookupRow<Date>(date, DateUtility.format(date, "H:mm:ss"));
  }

  @Override
  protected Pattern createSearchPattern(String humanReadbleFilterPattern) {
    return super.createSearchPattern("*" + humanReadbleFilterPattern);
  }
}