Simple GroupingValidHandler example.

ValidInvalidGroup.java

import java.util.Date;

import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.IsWidget;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.user.datepicker.client.CalendarUtil;
import com.sencha.gxt.test.client.TestSample;
import com.sencha.gxt.widget.core.client.ContentPanel;
import com.sencha.gxt.widget.core.client.button.TextButton;
import com.sencha.gxt.widget.core.client.container.CssFloatLayoutContainer;
import com.sencha.gxt.widget.core.client.container.CssFloatLayoutContainer.CssFloatData;
import com.sencha.gxt.widget.core.client.container.MarginData;
import com.sencha.gxt.widget.core.client.event.InvalidEvent;
import com.sencha.gxt.widget.core.client.event.InvalidEvent.InvalidHandler;
import com.sencha.gxt.widget.core.client.event.ValidEvent;
import com.sencha.gxt.widget.core.client.event.ValidEvent.ValidHandler;
import com.sencha.gxt.widget.core.client.form.DateField;
import com.sencha.gxt.widget.core.client.form.FieldLabel;
import com.sencha.gxt.widget.core.client.form.IntegerSpinnerField;
import com.sencha.gxt.widget.core.client.form.TextField;
import com.sencha.gxt.widget.core.client.form.validator.GroupingValidHandler;

@TestSample(name = "Valid Invalid Group", description = "", jiraIds = 3793)
public class ValidInvalidGroup implements IsWidget {

  private ContentPanel widget;

  @Override
  public Widget asWidget() {
    if (widget == null) {
      TextField field0 = new TextField();
      TextField field1 = new TextField();
      IntegerSpinnerField field2 = new IntegerSpinnerField();
      DateField field3 = new DateField();

      // validator 0
      field0.setAutoValidate(true);
      field0.setAllowBlank(false);

      // validator 1
      field1.setAutoValidate(true);
      field1.setAllowBlank(false);

      // validator 2
      field2.setAllowBlank(false);
      field2.setAutoValidate(true);
      field2.setMinValue(10);
      field2.setIncrement(1);

      Date date = new Date();
      CalendarUtil.addDaysToDate(date, 1);
      // validator 3
      field3.setAllowBlank(false);
      field3.setAutoValidate(true);
      field3.setMinValue(date);

      FieldLabel fieldLabel0 = new FieldLabel(field0, "No empty");
      FieldLabel fieldLabel1 = new FieldLabel(field1, "No empty");
      FieldLabel fieldLabel2 = new FieldLabel(field2, "> 10");
      FieldLabel fieldLabel3 = new FieldLabel(field3, "> tomorrow");

      final GroupingValidHandler validGroup = new GroupingValidHandler(false);
      validGroup.add(field0);
      validGroup.add(field1);
      validGroup.add(field2);
      validGroup.add(field3);

      final TextButton finishButton = new TextButton("Can Click if Validators are Passing");
      finishButton.setEnabled(false);

      CssFloatLayoutContainer container = new CssFloatLayoutContainer();
      container.add(fieldLabel0, new CssFloatData(1));
      container.add(fieldLabel1, new CssFloatData(1));
      container.add(fieldLabel2, new CssFloatData(1));
      container.add(fieldLabel3, new CssFloatData(1));
      container.add(new HTML(" "), new CssFloatData(1));
      container.add(finishButton, new CssFloatData(1));

      widget = new ContentPanel();
      widget.add(container, new MarginData(50));


      validGroup.addInvalidChangeEventHandler(new InvalidHandler() {
        @Override
        public void onInvalid(InvalidEvent event) {
          finishButton.setEnabled(validGroup.isValid());
        }
      });

      validGroup.addValidChangeEventHandler(new ValidHandler() {
        @Override
        public void onValid(ValidEvent event) {
          finishButton.setEnabled(validGroup.isValid());
        }
      });
    }

    return widget;
  }

}