Bug in TreeTableView rendering

[Sverre Moe]

I have created an issue for this on GitHub.
https://github.com/javafxports/openjdk-jfx/issues/607

/Sverre

man. 26. aug. 2019 kl. 20:03 skrev Sverre Moe <sverre.moe at gmail.com>:

> I think I have found a bug/regression with Java 11 regarding TreeTableView.
> This has worked fine on JavaFX 8, but is messed up with JavaFX 11.
> 1) The arrow button is on the text
> 2) No text indentation levels: Each row (no matter the level) is at the
> left edge of the TreeTableView.
>
> I can file an issue at GitHub if this is a real bug/regression. I just
> wanted to check first here.
>
> TreeTableColumn<OurDataObject, Label> column = new
> TreeTableColumn<>("Column");
> column.setCellValueFactory(param -> new ReadOnlyObjectWrapper<>(new
> OurDataObjectLabel(param.getValue().getValue())));
>
> We are using Label here so we can set StyleClass based on some information
> in the OurDataObject.
>
> class OurDataObject {
>     private String name;
>     public String getName() { return name; }
> }
>
> class AlsoOurDataObject extends OurDataObject {
>     public boolean isSomething() { ... }
> }
>
> class OurDataObjectLabel extends Label() {
>     public OurDataObjectLabel(OurDataObject ourDataObject) {
>         setText(ourDataObject.getName());
>         if (ourDataObject instanceof AlsoOurDataObject) {
>             if (((AlsoOurDataObject) ourDataObject).isSomething()) {
>                 getStyleClass().add("style");
>             }
>         }
>     }
> }
>
> A workaround was to use OurDataObject for both types in the
> TreeTableColumn, create a CellFactory to do what has been done in
> OurDataObjectLabel and in addition to the CellValueFactory.
>
> Code Example for reproducing the problem:
> This is using a String instead of an Object as the data model for
> simplicity.
> I have attached a screenshot that illustrates this problem. Made with the
> example code below.
>
> import javafx.application.Application;
> import javafx.beans.property.ReadOnlyObjectWrapper;
> import javafx.scene.Scene;
> import javafx.scene.control.TreeItem;
> import javafx.scene.control.TreeTableColumn;
> import javafx.scene.control.TreeTableView;
> import javafx.scene.layout.StackPane;
> import javafx.scene.text.Text;
> import javafx.stage.Stage;
>
> public class App extends Application {
>
>     public static void main(String[] args) {
>         App.launch(args);
>     }
>
>     @Override
>     public void start(Stage stage) throws Exception {
>         StackPane root = new StackPane();
>
>         TreeTableView<String> treeTableView = new TreeTableView<>();
>         treeTableView.setShowRoot(false);
>         root.getChildren().add(treeTableView);
>
>         TreeTableColumn<String, Text> column = new
> TreeTableColumn<>("Column");
>         column.setPrefWidth(200);
>         treeTableView.getColumns().add(column);
>
>         column.setCellValueFactory(param -> new ReadOnlyObjectWrapper<>(
>                 new Text(param.getValue().getValue())));
>
>         TreeItem<String> rootItem = new TreeItem<>("");
>         treeTableView.setRoot(rootItem);
>
>         TreeItem<String> item1 = new TreeItem<>("LEVEL1");
>         item1.setExpanded(true);
>         rootItem.getChildren().add(item1);
>
>         TreeItem<String> item2 = new TreeItem<>("LEVEL2");
>         item2.setExpanded(true);
>         item1.getChildren().add(item2);
>
>         TreeItem<String> item3 = new TreeItem<>("LEVEL2_1");
>         item3.setExpanded(true);
>         item2.getChildren().add(item3);
>
>         Scene scene = new Scene(root, 250, 150);
>
>         stage.setTitle("JavaFX11");
>         stage.setScene(scene);
>         stage.show();
>     }
> }
>
>
> /Sverre
>
>