HvA Workshop JavaFX

package nl.hva.fonlc;

import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.PasswordField;
import javafx.scene.control.TextField;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

/**
 *
 * @author lennardf1989
 */
public class MainApplication extends Application {

    @Override
    public void start(Stage primaryStage) {
        BorderPane root = new BorderPane();

        //Center
        VBox centerBox = new VBox();
        centerBox.setStyle("-fx-max-width:200px;-fx-alignment:center");

        Label statusLabel = new Label();
        statusLabel.setVisible(false);
        centerBox.getChildren().add(statusLabel);

        Label userNameLabel = new Label("Username");
        centerBox.getChildren().add(userNameLabel);

        TextField userNameTextField = new TextField();
        centerBox.getChildren().add(userNameTextField);

        Label passwordLabel = new Label("Password");
        centerBox.getChildren().add(passwordLabel);

        PasswordField passwordTextField = new PasswordField();
        centerBox.getChildren().add(passwordTextField);

        root.setCenter(centerBox);

        //Bottom
        HBox bottomBox = new HBox();
        bottomBox.setAlignment(Pos.BASELINE_RIGHT);
        bottomBox.setStyle("-fx-padding:20px");

        Button loginButton = new Button("Login");
        loginButton.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent event) {
                statusLabel.setVisible(true);

                boolean userName = false;
                boolean password = false;

                if(userNameTextField.getText().equals("")) {
                    userNameLabel.setStyle("-fx-text-fill:red");
                }
                else {
                    userNameLabel.setStyle("-fx-text-fill:inherit");

                    userName = true;
                }

                if(passwordTextField.getText().equals("")) {
                    passwordLabel.setStyle("-fx-text-fill:red");
                }
                else {
                    passwordLabel.setStyle("-fx-text-fill:inherit");

                    password = true;
                }

                if(userName && password) {
                    statusLabel.setText("You are logged in!");
                }
                else {
                    statusLabel.setText("Username and password are both required!");
                }
            }
        });
        bottomBox.getChildren().add(loginButton);

        root.setBottom(bottomBox);

        //Scene
        Scene scene = new Scene(root, 640, 480);

        //Window
        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }

}