*/
private void handleWorksheetSelection() {
int selected = worksheetListBox.getSelectedIndex();
if (worksheetEntries != null && selected >= 0) {
WorksheetEntry entry = worksheetEntries.get(selected);
cellsFeedUrlField.setText(entry.getCellFeedUrl().toExternalForm());
listFeedUrlField.setText(entry.getListFeedUrl().toExternalForm());
}
}