CODEWITHSUNDEEP
javafxtextfield
Mikis Millemaci
Mikis Millemaci

Reputation: 31

JavaFX : How to control input in a TextField ?

I try to do an application with JavaFX. I have a little question :

Unfortunatly, i can't do this. I would like that '/' and '.' are always write in the TextField. I also would like when the user has wrote the fourth first numbers, the TextField set the cursor behind the '/'. So the user don't take care for '/' and '.'. He has just to type the number of the phone number.

How can i do this ?

Thanks for your help,

Mikis

(Sorry for my English ....)

Upvotes: 2

Views: 2296

Answers (3)

Mikis Millemaci
Mikis Millemaci

Reputation: 31

Finaly, i found what i was searching in this project :

https://github.com/jidesoft/jidefx-oss

But i adapted it to my needs. Do I put the code for the new object "MyMaskTextField" ?

Upvotes: 0

Ala Eddine Menai
Ala Eddine Menai

Reputation: 2870

You can addListener() to TextField propertyText and control the inputs.In your question you did not put any condition so just you need a useful implementation for that you can use this simple code :

 TextField field = new TextField();

    field.setPromptText("xxxx/xx.xx.xx");
        int maxDigits = 13;
        field.textProperty().addListener((ObservableValue<? extends String> observable, String oldValue, String newValue) -> {
            if (newValue.length() == 4 && oldValue.length() != 5) {
                field.setText(newValue + "/");
            } else if (newValue.length() == 7 && oldValue.length() != 8 || newValue.length() == 10 && oldValue.length() != 13) {
                field.setText(newValue + ".");
            }
            if (newValue.length() > maxDigits) {
                field.setText(oldValue);
            }

        });

Upvotes: 0

ItachiUchiha
ItachiUchiha

Reputation: 36722

You can use a TextFormatter to control the text inside a TextField.

PhoneNumber TextField described in the question should do the following:

  • Add / after 4 characters
  • Add . after 7 and 10 characters
  • Doesn't allow more than 13 characters

Here is a sample which does all of the above:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.TextField;
import javafx.scene.control.TextFormatter;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;

public class TextFieldFormatter extends Application {

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

    @Override
    public void start(Stage stage) {
        final TextField textField = new TextField();
        textField.setTextFormatter(new TextFormatter<String>(change -> {

            final int oldLength = change.getControlText().length();
            int newLength = change.getControlNewText().length();

            // Handle backspace
            if (newLength < oldLength) return change;

            // Add / after 4 characters
            // Add . after 7 and 10 characters
            // Do not accept more than 13 characters
            switch (newLength) {
                case 4 :
                    change.setText(change.getText() + "/"); 
                    newLength++;
                    break;
                case 7: case 10:
                    change.setText(change.getText() + "."); 
                    newLength++;
                    break;
                case 14:
                    return null;
            }
            // Set caret position
            change.setCaretPosition(newLength);
            change.setAnchor(newLength);
            return change;
        }));

        BorderPane root = new BorderPane();
        root.setCenter(textField);
        Scene scene = new Scene(root, 200, 200);
        stage.setScene(scene);
        stage.setTitle("TextField Example");
        stage.show();
    }
}

Upvotes: 2

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