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
*            a list of editpart
	 * @return the current selected table editpart, null if no table editpart,
	 *         more than one table, or other non-table editpart. Cell editpart
	 *         is also a type of table editpart.
	 */
	public static TableEditPart getTableEditPart( List editParts )
	{
		if ( editParts == null || editParts.isEmpty( ) )
			return null;
		int size = editParts.size( );
		TableEditPart part = null;
		for ( int i = 0; i < size; i++ )
		{
			Object obj = editParts.get( i );
			TableEditPart currentEditPart = null;
			if ( obj instanceof TableEditPart )
			{
				currentEditPart = (TableEditPart) obj;
			}
			else if ( obj instanceof TableCellEditPart )
			{
				currentEditPart = (TableEditPart) ( (TableCellEditPart) obj ).getParent( );
			}
			else if ( obj instanceof DummyEditpart )
			{
				continue;
			}
			if ( part == null )
			{
				part = currentEditPart;