package javafxsamples;

import javafx.application.Application;
import javafx.beans.binding.Bindings;
import javafx.beans.binding.StringExpression;
import javafx.beans.property.ObjectProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.stage.Stage;

/**
 * Binding test
 * @author Alex
 */
public class BidingTest extends Application{

    @Override
    public void start(Stage primaryStage) throws Exception {
        testStringExpression();
    }
    
    void testStringExpression() {
        final ObjectProperty objectProperty = new ObjectProperty(new Double(Math.PI));
        final StringExpression stringExpression = Bindings.convert(objectProperty);
        stringExpression.addListener(new ChangeListener<String>(){

            @Override
            public void changed(ObservableValue<? extends String> observable, String oldValue, String newValue) {
                System.out.println(String.format("change:[old=%s, new=%s]", oldValue, newValue));
            }
            
        });
        objectProperty.set(new Double(Math.E));
        objectProperty.set(null);
    }
    
    public static void main(String[] args) {
        launch(args);
    }
}