createLabel( valueArea, LABEL_DEFAULT_VALUE );
createLabel( valueArea, LABEL_DEFAULT_VALUE, maxStrLengthProperty );
	private void switchToCheckBox( )	{		createLabel( valueArea, LABEL_DEFAULT_VALUE );		defaultValueChooser = new Combo( valueArea, SWT.READ_ONLY | SWT.BORDER );		defaultValueChooser.add( CHOICE_NO_DEFAULT );		defaultValueChooser.add( BOOLEAN_TRUE );		defaultValueChooser.add( BOOLEAN_FALSE );		defaultValueChooser.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );		defaultValueChooser.addSelectionListener( new SelectionAdapter( ) {			public void widgetSelected( SelectionEvent e )			{				switch ( defaultValueChooser.getSelectionIndex( ) )				{					case 0 :						defaultValue = null;						break;					case 1 :						defaultValue = Boolean.toString( true );						break;					case 2 :						defaultValue = Boolean.toString( false );						break;				}			}		} );	}