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
}
			return result;
		}
		return null;
	}
	/**
	 * Return the first DataSetHandle for a report item.
	 * 
	 * If the report item has no DataSetHandle, search for it's container if
	 * container is not a ListingHandle.
	 * 
	 * @param handle
	 *            the ReportItemHandle
	 * @return Available DataSetHandle
	 */
	public static DataSetHandle getFirstDataSet( DesignElementHandle handle )
	{
		DataSetHandle dataSetHandle = null;
		if ( handle instanceof ReportItemHandle )
		{
			dataSetHandle = ( (ReportItemHandle) handle ).getDataSet( );
		}
		if ( dataSetHandle == null )
		{
			for ( DesignElementHandle elementHandle = handle; elementHandle != null; elementHandle = elementHandle
					.getContainer( ) )
			{
				if ( elementHandle instanceof ListingHandle
						&& ( dataSetHandle = ( (ListingHandle) elementHandle )
								.getDataSet( ) ) != null )