Bug 146159 [Regression]Changing font operation doesn't work other than the first time
Description: The first time changing operation can work well. However, Change it again, it won't work. Steps: 1.Insert lable/text to layout or master page 2.Change the font from serif to cursive, it works well 3.Change the font again Result: The action doesn't work Additional infor: build number:200606080632
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DEUtil.java
StyleHandle styleHandle = handle.getPrivateStyle( );
		Object fontSizeValue = null;
		if ( styleHandle != null )
		{
			fontSizeValue = handle.getPrivateStyle( ).getFontSize( ).getValue( );
		}
		return fontSizeValue;
	}
	/**
	 * @deprecated
	 */
	public static List getDataSets( )
	{
		return SessionHandleAdapter.getInstance( ).getReportDesignHandle( )
				.getVisibleDataSets( );
	}
	public static Iterator getThemes( )
	{
		return getThemes( new AlphabeticallyComparator( ) );
	}
	private static Iterator getThemes( AlphabeticallyComparator comparator )
	{
		List themes = SessionHandleAdapter.getInstance( )
				.getReportDesignHandle( ).getVisibleThemes(
						IAccessControl.DIRECTLY_INCLUDED_LEVEL );
		Object[] themesArray = themes.toArray( );
		if ( comparator != null )
		{
			Arrays.sort( themesArray, comparator );
		}