Is it possible to add a ActionEvent Handler to a javaFX Textfield using addEventHandler method? - event-handling

Question

I tried to add action handlers to text field using the addEventHandler() but seem not to be working. Is it even possible o is it a bug? If I try the same with Button control everything is fine.
Here is the sample code:
package com.teste;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.TextField;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class EventHandlerTest extends Application {
#Override
public void start(Stage stage) throws Exception {
// TODO Auto-generated method stub
stage.setTitle("Custom JavaFX Event");
TextField btn = new TextField();
btn.setId("Fire Button");
btn.setText("Fire MyEvent'");
btn.addEventHandler(ActionEvent.ACTION, new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
if (event.getEventType().equals(ActionEvent.ACTION)) {
System.out.println("ActionEvent 2");
}
}
});
StackPane root = new StackPane();
root.getChildren().add(btn);
stage.setScene(new Scene(root, 300, 250));
stage.show();
}
/**
* #param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
launch(args);
}
}
Documentation says it should be possible, but can't find anything else. Any ideas?

Answer 1

If you use setOnAction rather than addEventHandler, then you will be able to capture the ActionEvent for the TextField.
btn.setOnAction(new EventHandler<ActionEvent>() {
#Override public void handle(ActionEvent event) {
System.out.println("ActionEvent: " + event);
}
});
I don't know why the addEventHandler code does not capture the event. I also tried addEventFilter as well and that did not work for me either (JavaFX 2.2).
Note that a TextField will generate an ActionEvent when you press the Enter key on the TextField.

Answer 2

In java 8 now is possible
btn.addEventHandler(ActionEvent.ACTION, new EventHandler<ActionEvent>() {
#Override
public void handle(ActionEvent event) {
System.out.println("ActionEvent: " + event);
}
});
//Lambda Notation
btn.addEventHandler(ActionEvent.ACTION, event -> {
System.out.println("ActionEvent: " + event);
});