assert ( parent != null ); IStyle areaStyle = root.getStyle( );  root .setHeight( getCurrentBP( ) + getOffsetY( ) + getDimensionValue( areaStyle .getProperty( StyleConstants.STYLE_PADDING_BOTTOM ) ) + getDimensionValue( areaStyle .getProperty( StyleConstants.STYLE_BORDER_BOTTOM_WIDTH ) ) );
root.setHeight( getCurrentBP( ));
	protected void closeLayout( )	{		assert ( parent != null );		IStyle areaStyle = root.getStyle( );		// set dimension property for root TODO suppport user defined height		root				.setHeight( getCurrentBP( )						+ getOffsetY( )						+ getDimensionValue( areaStyle								.getProperty( StyleConstants.STYLE_PADDING_BOTTOM ) )						+ getDimensionValue( areaStyle								.getProperty( StyleConstants.STYLE_BORDER_BOTTOM_WIDTH ) ) );	}