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  1. JDK
  2. JDK-8092578

Selecting TreeItem programatically expands collapsed Items

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 8
    • Fix Version/s: 8u20
    • Component/s: javafx
    • Labels:
    • Environment:

      Windows 7 x64 with Java 8 b128 x64

      Description

      Hello,

      when a TreeView contains some elements, and one of the elements is set to be not expaneded, selecting that element using getSelectionModel.select() expands that element.

      Sample code:



      package bugreports;

      import javafx.application.Application;
      import javafx.scene.Scene;
      import javafx.scene.control.Button;
      import javafx.scene.control.TreeItem;
      import javafx.scene.control.TreeView;
      import javafx.scene.layout.BorderPane;
      import javafx.stage.Stage;

      public class TreeViewExpansionBug extends Application
      {
      @Override
      public void start(final Stage primaryStage)
      {
      final TreeItem<String> a = new TreeItem<>("a");
      final TreeItem<String> b = new TreeItem<>("b");

      final TreeItem<String> middle = new TreeItem<>("middle");
      middle.getChildren().addAll(a, b);

      final TreeItem<String> root = new TreeItem<>("root");
      root.getChildren().add(middle);
      root.setExpanded(true);

      final TreeView<String> view = new TreeView<>();
      view.setRoot(root);

      final Button select = new Button("select");
      select.setOnAction(e -> view.getSelectionModel().select(middle));

      final BorderPane pane = new BorderPane();
      pane.setCenter(view);
      pane.setBottom(select);

      primaryStage.setScene(new Scene(pane));
      primaryStage.show();
      }

      public static void main(final String[] args)
      {
      launch(args);
      }
      }


      Steps to reproduce:
      1) Launch. Now you see the nodes root and middle, with middle being collapsed
      2) click on button select. Now middle, is selected, but also expanded

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            Assignee:
            msladecek Martin Sládeček
            Reporter:
            cmuthingjfx Clemens Muthing (Inactive)
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              Dates

              Created:
              Updated:
              Resolved:
              Imported: