Bug 172606 Error icon in Library Explorer for multi-extends item.[01]
Description: Error icon in Library Explorer for multi-extends item. Build number:2.1.2.v20070202 Steps to reproduce: 1. New a.rptlibrary and b.rptlibrary. 2. New a table in a.rptlibray. 3. Open b.rptlibray and extends table item in a.rptlibray. 4. Open Library Explore, check table item inside b.rptlibrary. Expected result: Normal item icon before table item. Actual result: Error icon indicate the item exists errors. see attached.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/UIUtil.java
groupHandle.getHeader( ).add( factory.newTableRow( columnCount ) );
			groupHandle.getFooter( ).add( factory.newTableRow( columnCount ) );
		}
		else if ( parent instanceof ListHandle )
		{
			groupHandle = factory.newListGroup( );
			slotHandle = ( (ListHandle) parent ).getGroups( );
		}
		if ( groupHandle != null && slotHandle != null )
		{
			slotHandle.add( groupHandle, position );
			
			{
				GroupDialog dialog = new GroupDialog( getDefaultShell( ),
						GroupDialog.GROUP_DLG_TITLE_NEW );
				
				dialog.setInput( groupHandle );
				if ( dialog.open( ) == Window.CANCEL )
				{
					return false;
				}
			}
			return true;
		}
		return false;
	}
	/**
	 * Gets the first selected edit part in layout editor. Whenever the user has
	 * deselected all edit parts, the contents edit part should be returned.
	 *