In the fxml file of a GUI we can direct the code to a method when a particular event occurs. For action events, it would be something like this:
<Button fx:id="btn1" onAction="#actionPause" />
But as to whether the object has been focused?
In my case, I'm looking for this to use a TextField to remove your default content and change its style.
Please kindly attach to the resolutions for fxml files.
Unfortunately you can not do this directly in fxml. Events that can be configured directly in FXML are: setOnAction, Drag & Drop, Keyboard, Mouse, Rotate, Swipe and Zoom.
But in your code you can do the following:
public class FXMLDocumentController implements Initializable{
@FXML
// Link entre o controlador e a interface
private TextField idtextfield;
// ... Algum código
public void initialize(URL url, ResourceBundle rb){
/* Adicionando um listener para capturar mudanças de foco
* Obs.: O primeiro componente de cima para baixo normalmente recebe o foco
* da aplicação, então tenha cautela
*/
idtextfield.focusedProperty().addListener(new ChangeListener<Boolean>() {
@Override
public void changed(ObservableValue<? extends Boolean> observable, Boolean oldValue, Boolean newValue) {
// newValue terá o valor do foco atual, oldValue o valor anterior
// Se estiver com o foco o valor será true
System.out.println(newValue);
}
});
See the full list of available FXML events by looking for setOn: TextField (JavaFX 8)