Hi all,

When using a WebEngine and calling from Javascript a Java function having an argument being an array of a basic type (String[], int[], double[], etc.), the argument being an array of basic type is always null.

To reproduce the error run the code below:

---- Begin code

import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.concurrent.Worker;
import javafx.scene.web.WebEngine;
import javafx.stage.Stage;
import netscape.javascript.JSObject;


public class Main extends Application {

    public static void main(String[] args) {
        Application.launch(Main.class);
    }

    public class ParentFunctions {
        public void parentfunc(String title, String[] args) {
            System.out.println(title);
            System.out.println(args);

            assert (title != null) : "title must not be null";
            assert (args != null) : "args must not be null";
        }
    };

    @Override
    public void start(Stage stage) throws Exception {
        final WebEngine engine = new WebEngine();
        engine.loadContent("<script type='text/javascript'>function init(javaobj) { javaobj.parentfunc('title', ['arg1', 'arg2']); }</script>");

        engine.getLoadWorker().stateProperty().addListener(new ChangeListener<Worker.State>() {
            @Override
            public void changed(final ObservableValue<? extends Worker.State> observableValue, final Worker.State oldState, final Worker.State newState) {
                if (newState == Worker.State.SUCCEEDED) {
                    JSObject window = (JSObject) engine.executeScript("window");
                    window.call("init", new Object[]{new ParentFunctions()});
                }
            }
        });
    }
}

---- End code

Does JavaFX WebEngine allows passing JavaScript array from JavaScript to Java ?

Thanks