saveAsCsvFileMenuItem.addActionListener(saveTableAsCsvFileActionListener);
popup.add(saveAsCsvFileMenuItem);
final JMenuItem previewMenuItem = WidgetFactory.createMenuItem("Preview table",
"images/actions/preview_data.png");
previewMenuItem.addActionListener(new PreviewSourceDataActionListener(_schemaTree.getWindowContext(),
_analysisJobBuilder.getDataContextProvider(), columns));
popup.add(previewMenuItem);
popup.show((Component) e.getSource(), e.getX(), e.getY());
}