Get selected TableRows original index in TableView - javafx

Question

Is there any way to get the original index of the selected row in TableView before the TableView was sorted or filtered? If not, can I alternatively make my own TableRow object, get it when selected and have a method getOriginalRowIdex() ?
The code tableView.getSelectionModel().getSelectedIndex()); returns the selected index according to the sorted and filtered data, which makes matching the row indexes to the indexes in a list not possible.
tableView.setRowFactory(tv -> {
TableRow<ObservableList> row = new TableRow<>();
row.setOnMouseClicked(event -> {
if (event.getClickCount() == 2 && (!row.isEmpty())) {
label.setText(rowMessages.get(tableView.getSelectionModel().getSelectedIndex()));
System.out.println(tableView.getSelectionModel().getSelectedIndex());
}
});
return row;
});

Answer 1

FilteredList and SortedList are just wrappers around a regular ObservableList. Since you have to have the original list, just look up the index of the data in the row using list.indexOf().
public class FilteredTable extends Application {
public static void main(String[] args){launch(args);}
#Override
public void start(Stage stage) {
ObservableList<LineItem> items = FXCollections.observableArrayList();
for (int i = 0;i<10;i++){items.add(new LineItem(i+"'th", i));}
TableView tableView = new TableView();
FilteredList<LineItem> evens = new FilteredList<>(items, p->p.amountProperty().get()%2==0);
SortedList<LineItem> sorted = new SortedList<>(evens);
sorted.comparatorProperty().bind(tableView.comparatorProperty());
tableView.setItems(sorted);
TableColumn<LineItem,String> descCol = new TableColumn<>("desc");
descCol.setCellValueFactory(new PropertyValueFactory<>("desc"));
TableColumn<LineItem, Double> amountCol = new TableColumn<>("amount");
amountCol.setCellValueFactory(new PropertyValueFactory<>("amount"));
Label label = new Label("click a row");
tableView.setRowFactory(tv -> {
TableRow<ObservableList> row = new TableRow<>();
row.setOnMouseClicked(event -> {
if (event.getClickCount() == 2 && (!row.isEmpty())) {
label.setText(tableView.getSelectionModel().getSelectedIndex()
+" <-tbl row, idx in items-> "
+items.indexOf(tableView.getSelectionModel().getSelectedItem()));
}
});
return row;
});
tableView.getColumns().addAll(descCol,amountCol);
stage.setScene(new Scene(new VBox(5,tableView,label),300,300));
stage.show();
}
public class LineItem {
private final StringProperty desc = new SimpleStringProperty();
private final IntegerProperty amount = new SimpleIntegerProperty();
public StringProperty descProperty() {return desc;}
public IntegerProperty amountProperty() {return amount;}
public LineItem(String dsc, int amt) {
desc.set(dsc); amount.set(amt);
}
}
}