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
List groupList = new ArrayList( );
		if ( handle instanceof ListingHandle )
		{
			SlotHandle groupSlotHandle = ( (ListingHandle) handle ).getGroups( );
			for ( Iterator iter = groupSlotHandle.iterator( ); iter.hasNext( ); )
			{
				GroupHandle group = (GroupHandle) iter.next( );
				groupList.add( group );
			}
			return groupList;
		}
		DesignElementHandle result = handle.getContainer( );
		if ( result != null )
		{
			if ( result instanceof GroupHandle )
			{
				groupList.add( (GroupHandle) result );
				return groupList;
			}
			return getGroups( result );
		}
		return groupList;
	}
	/**
	 * The group container is ListingHandler, list, table, and so on.
	 */
	public static final String TYPE_GROUP_LISTING = "listing";
	/**
	 * The group container is GroupHandler
	 */