How to update xySeries, if values come from another thread about charts

[HanSolo]

Just for your info, I've released 11.8 which is more or less a backport of the jdk16 branch, meaning to say it contains a lot of changes and additional charts.

[HanSolo]

Of course that‘s possible but please provide a code snippet that shows the problem so that I can reproduce it.

[permiakover]

I take LineChartTest and add presenters here, i tried several times. The values are added, but it is possible to show them, only after manual screen resize.

Here is presenters, first in Kotlin. It uses specific dispatcher to be ok, but its not even with runLater

class Presenter(xySeries1: XYSeries<XYItem>) {

    init {
        var x = 12.0
        CoroutineScope(Dispatchers.JavaFX).launch {
            while(true){
                println("Hello")
                delay(1000)
                Platform.runLater {
                    xySeries1.items.add(XYChartItem(++x, 160.0," "))
                }
            }
        }
    }
}

Then I check the java version of the same presenter with thread

public class Presenter2 {

    public Presenter2 (XYSeries xySeries){

        new Thread(new Runnable() {
            @Override
            public void run() {
                int x = 0;
                while (true){
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    int finalX = x;
                    Platform.runLater(() -> xySeries.getItems().add(new XYChartItem(finalX, 160, "")));
                    x++;

                }
            }
        }).start();
    }
}

but it also didn't work

and i tried with the third presenter, that uses method of application

public class Presenter3 {

    public Presenter3(App application) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                int x = 0;
                while (true) {
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    Platform.runLater(() -> application.addValue());
                }
            }
        }).start();
    }
}

new application method:

   public void addValue() {
        Platform.runLater(() -> {
            xySeries1.getItems().add(new XYChartItem(x, 160, ""));
        });
        x++;
    }

[HanSolo]

Ok, now I see. Fixed it in the JDK16 branch with commit 39d8877.
If I find time I will also backport it to 11.

[permiakover]

Thank you for the work!