hasChoice = false;
hasChoice = true;
	public ComboBoxMeasureFieldEditor( String prop_name, String labelText,			String[][] measureNamesAndValues, Composite parent )	{		hasChoice = false;		init( prop_name, labelText );		Assert.isTrue( checkArray( measureNamesAndValues ) );		fMeasureNamesAndValues = measureNamesAndValues;		this.parent = parent;		createControl( parent );	}