return LABEL_DOUBLE_CLICK;
return ( (LibraryHandle) object ).getFileName( );
	private String getTooltip( TreeItem item )	{		if ( item != null )		{			Object object = item.getData( );			if ( object instanceof DataSourceHandle					|| object instanceof ParameterGroupHandle )			{				return LABEL_DOUBLE_CLICK;			}			StringBuffer tooltip = new StringBuffer( );			boolean canInsert = InsertInLayoutUtil.handleValidateInsertToLayout( object,					UIUtil.getCurrentEditPart( ) );			String text = "(" + item.getText( ) + ")"; //$NON-NLS-1$ //$NON-NLS-2$			if ( object instanceof DataSetHandle )			{				if ( canInsert )					tooltip.append( Messages.getString( "DataViewTreeViewerPage.tooltip.DragToInsertDataSetColumns" ) //$NON-NLS-1$							+ text							+ "; " ); //$NON-NLS-1$				tooltip.append( LABEL_DOUBLE_CLICK );			}			if ( object instanceof DataSetItemModel )			{				if ( canInsert )					tooltip.append( Messages.getString( "DataViewTreeViewerPage.tooltip.DragToInsertColumn" ) + text ); //$NON-NLS-1$			}			if ( object instanceof ParameterHandle )			{				if ( canInsert )					tooltip.append( Messages.getString( "DataViewTreeViewerPage.tooltip.DragToInsertParameter" ) ); //$NON-NLS-1$				tooltip.append( LABEL_DOUBLE_CLICK );			}			return tooltip.toString( );		}		return ""; //$NON-NLS-1$	}