for ( int i = 0; i < buttonRegistry.size( ); i++ )
Iterator buttons = popupButtonRegistry.values( ).iterator( ); while ( buttons.hasNext( ) )
	private boolean isButtonSelected( )	{		for ( int i = 0; i < buttonRegistry.size( ); i++ )		{			if ( ( (Button) buttonRegistry.get( i ) ).getSelection( ) )			{				return true;			}		}		return false;	}