The example below registers an actionHandler to a textField/comboBox which compares the text of the field/editor with the value of the formatter/combo at the time of receiving the actionEvent. Run and

- edit textField, press enter
- expected: textField.text == formatter.value
- actual: formatter.value is oldValue

- edit combo, press enter
- expected and actual: editor.text == combo.value


The example:

public class TextFieldAction extends Application {

    private Parent getContent() {
        // ComboBox behaves as expected
        ObservableList<String> items = FXCollections.observableArrayList("One", "Two", "All");
// ComboBoxX<String> comboBox = new ComboBoxX<>(items);
        ComboBox<String> comboBox = new ComboBox<String>(items);
        comboBox.setEditable(true);
        comboBox.setValue(items.get(0));
        comboBox.setOnAction(e -> {
            System.out.println("combo action: " +
                    comboBox.getEditor().getText() + "=" + comboBox.getValue());
        });

        // compare to TextField with TextFormatter: value not yet committed
        TextField textField = new TextField();
        TextFormatter<String> formatter = new TextFormatter<>(IDENTITY_STRING_CONVERTER, "initial");
        
        textField.setTextFormatter(formatter);
        textField.setOnAction(e -> {
            System.out.println("textfield action: " +
                    textField.getText() + "=" + formatter.getValue());
        });
        // compare Spinner
        Spinner spinner = new Spinner();
        // normal setup of spinner
        SpinnerValueFactory factory = new IntegerSpinnerValueFactory(0, 10000, 0);
        spinner.setValueFactory(factory);
        spinner.setEditable(true);
        // spinner has no action (should it?
        // spinner.setOnAction(e -> {
        // using action of editor
        spinner.getEditor().setOnAction(e -> {
            System.out.println("spinner-editor action: " +
                    spinner.getEditor().getText() + "=" + spinner.getValue());
            
        });
        
        VBox box = new VBox(10, textField, comboBox, spinner);
        return box;
    }

    @Override
    public void start(Stage primaryStage) throws Exception {
        primaryStage.setScene(new Scene(getContent()));
        primaryStage.setTitle(FXUtils.version());
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }

}