Is there any JSF Select Time Zone component out there? - jsf-2

Question

I have been looking for this for a while and haven't found it. It is surprisingly complicated as shown in this old IceFaces tutorial.
What is needed is a UIInput component that will set a java.util.TimeZone property, allowing the user to select it from a map or a list on the screen. Before I dive in to write one for myself -- does anyone know of an available component that does this?

Answer 1

Use <h:selectOneMenu> to represent a dropdown list. Use <f:selectItems> to feed it with a E[], List<E>, SelectItem[] or List<SelectItem> as value.
Here's how it can look like at its simplest:
#ManagedBean
#ViewScoped
public class Bean implements Serializable {
private String timeZoneID; // +getter +setter
private String[] timeZoneIDs; // +getter only
#PostConstruct
public void init() {
timeZoneIDs = TimeZone.getAvailableIDs();
// You may want to store it in an application scoped bean instead.
}
public void submit() {
System.out.println("Selected time zone: " + TimeZone.getTimeZone(timeZoneID));
}
// ...
}
with this view:
<h:form>
<h:selectOneMenu value="#{bean.timeZoneID}" required="true">
<f:selectItem itemValue="#{null}" itemLabel="Select timezone..." />
<f:selectItems value="#{bean.timeZoneIDs}" />
</h:selectOneMenu>
<h:commandButton value="submit" action="#{bean.submit}" />
<h:messages/>
</h:form>
If you want to make it a fullworthy TimeZone property, you'd need to bring in a #FacesConverter(forClass=TimeZone.class) which should be pretty straightforward enough.