Java question regarding Anonymous Class-Widget creation and Handler registration

Smart GWT Technical Q&A
1

Hi all,

I’m using a lot of anonymous class code like this in order to keep my code more readable (Java 1.6, SmartGWT 2.5, Eclipse Indigo)

		final DateChooser dateChooser = new DateChooser() {
			{
				Calendar today = Calendar.getInstance();

				setStartYear(today.get(Calendar.YEAR) - 1);
				setEndYear(today.get(Calendar.YEAR) + 1);
				setFirstDayOfWeek(1);
				setWidth(100);
				setTodayButtonTitle("Heute");
			}
		};

I’d like to do the same with handlers, eg this handler:

dateChooser.addDataChangedHandler(new DataChangedHandler() {
			@Override
			public void onDataChanged(DataChangedEvent event) {
				checkWholeDate(dateChooser, timeItem, blurbItem);
			}
		});

where checkWholeDate a method and timeItem, blurbItem other final widgets.

I can’t do it like this:

		final DateChooser dateChooser = new DateChooser() {
			{
				Calendar today = Calendar.getInstance();

				setStartYear(today.get(Calendar.YEAR) - 1);
				setEndYear(today.get(Calendar.YEAR) + 1);
				setFirstDayOfWeek(1);
				setWidth(100);
				setTodayButtonTitle("Heute");
				addDataChangedHandler(new DataChangedHandler() {
					@Override
					public void onDataChanged(DataChangedEvent event) {
						checkWholeDate(dateChooser, timeItem, blurbItem);
					}
				});
			}
		};

because the “dateChooser” method parameter is not available in the inner handler anonymous class.

Do you have an idea how I could also move the handler to the widget anonymous class?

Thanks,
Blama