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
*/
	public static Iterator getStyles( Comparator comparator )
	{
		List styles = null;
		if ( SessionHandleAdapter.getInstance( ).getReportDesignHandle( ) instanceof ReportDesignHandle )
		{
			styles = SessionHandleAdapter.getInstance( )
					.getReportDesignHandle( ).getAllStyles( );
		}
		else if ( SessionHandleAdapter.getInstance( ).getReportDesignHandle( ) instanceof LibraryHandle )
		{
			styles = new ArrayList( );
			ThemeHandle theme = ( (LibraryHandle) SessionHandleAdapter
					.getInstance( ).getReportDesignHandle( ) ).getTheme( );
			SlotHandle themeSlot = ( (LibraryHandle) SessionHandleAdapter
					.getInstance( ).getReportDesignHandle( ) ).getThemes( );