policyBox = new ListBox();
policyBox.addItem("Multi Row");
policyBox.addItem("Single Row");
policyBox.addItem("Checkboxes");
policyBox.addItem("Radio Buttons");
form.addLabeledWidget("Selection Policy:", policyBox);
// Add button to change policy
{
Button button = new Button("Set Selection Policy", new ClickHandler() {
public void onClick(ClickEvent event) {