addGap(main, "20px");
SimpleButton groupButton = new SimpleButton("Group By Gender");
groupButton.addClickListener(new ClickListener() {
public void onClick(Widget sender) {
FieldGroup group = new FieldGroup("Gender", "gender");
group.setShowCounts(true);
grid.setGroupBy(group);
}
});
SimpleButton clearGroupingButton = new SimpleButton("Clear Grouping");
clearGroupingButton.addClickListener(new ClickListener() {