Bug 122289 [Smoke][Regression][SPM-Linux WS]Item can't be dropped to layout from library
Details: Item can't be dropped to layout from library Setp: 1.New a library and insert a label 2.New a report design and use library 3.Drop label from library explorer to layout Actual results: Nothing is dropped into layout. Not only use library in outline, but also in library explorer is no effect. But when I drop the label without use library, it will use library and label can drop in it.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/util/UIUtil.java
shell = PlatformUI.getWorkbench( )
						.getActiveWorkbenchWindow( )
						.getShell( );
			}
		}
		catch ( Exception e )
		{
		}
		if ( shell == null )
		{
			return new Shell( );
		}
		return shell;
	}
	public static ElementFactory getElementFactory( )
	{
		return SessionHandleAdapter.getInstance( )
				.getReportDesignHandle( )
				.getElementFactory( );
	}
	/**
	 * Creates a new group under the given parent
	 * 
	 * @param parent
	 *            The parent of the new group, it should be a table or a list
	 *            and should not be null.
	 * @return true if the group created successfully, false if the creation is
	 *         cancelled or some error occurred.
	 */
	public static boolean createGroup( DesignElementHandle parent )