I get Memory Leaks in the TreeView, if I open the stage which contains the TreeView several times.

Everytime I open the stage, I clear the TreeView and populate it with new items.

However there are leaks. It seems to me that some listeners are not removed, when the root node is cleared.

I think this is a bug.

This MIGHT be related to:
http://javafx-jira.kenai.com/browse/RT-16529

See this test case:

i < 10: 5854 KB
i < 100: 35944 KB
i < 200: 64515 KB


import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.TreeItem;
import javafx.scene.control.TreeView;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import javafx.stage.WindowEvent;
 
 
public class TestApp3 extends Application {
    public static void main(String[] args) throws Exception {
        launch(args);
    }
 
    public void start(final Stage stage) throws Exception {
 
        VBox root = new VBox();
 
        SubStage subStage = new SubStage();
        for (int i = 0; i < 10; i++) {
            subStage.show();
            subStage.hide();
        }
 
        System.gc();
        System.out.println((Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()) / 1024 + " KB");
 
        Scene scene = new Scene(root);
        stage.setScene(scene);
        stage.show();
    }
 
    private class SubStage extends Stage {
        public SubStage() {
            TreeView<String> treeView = new TreeView<String>();
            final TreeItem<String> rootNode = new TreeItem<String>("Root");
 
            treeView.setRoot(rootNode);
 
            setOnShowing(new EventHandler<WindowEvent>() {
                @Override
                public void handle(WindowEvent windowEvent) {
                    rootNode.getChildren().clear();
                    rootNode.getChildren().add(new TreeItem<String>("Item"));
                }
            });
 
            Scene scene = new Scene(treeView);
            setScene(scene);
        }
    }
}