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  1. JDK
  2. JDK-8210973

Focus goes to wrong Window when dismissing an Alert

    Details

    • Subcomponent:
    • CPU:
      x86_64
    • OS:
      generic

      Description

      ADDITIONAL SYSTEM INFORMATION :
      macOS High Sierra 10.13.6
      Java 1.8.0_181

      A DESCRIPTION OF THE PROBLEM :
      This happens when two or more JavaFX Windows are on screen.
      Eg. assume we have Window 1, Window 2.
      We show an Alert with Window 1 as it's owner.
      When the Alert is dismissed, the focus incorrectly goes to Window 2, not Window 1 which was the owner of the Alert.

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Run the supplied test program.
      Click on the button.
      Observe that focus goes to the wrong window.

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      Focus should go to the Window which is the owner of the Alert.
      ACTUAL -
      Focus goes to the window which isn't the owner of the Alert.

      ---------- BEGIN SOURCE ----------
      import javafx.application.Application;
      import javafx.event.ActionEvent;
      import javafx.event.EventHandler;
      import javafx.scene.Scene;
      import javafx.scene.control.Alert;
      import javafx.scene.control.Alert.AlertType;
      import javafx.scene.control.Button;
      import javafx.scene.layout.StackPane;
      import javafx.stage.Stage;
       
      public class HelloWorld extends Application {
          public static void main(String[] args) {
              launch(args);
          }
          
          @Override
          public void start(
              Stage primaryStage)
          {
              System.out.println("JRE: " + "Platform: " + System.getProperty("java.version"));
              createWindow1(primaryStage);
              createWindow2(primaryStage);
          }
          
          private void createWindow1(
              Stage stage)
          {
              stage.setTitle("Hello World!");
              Button btn = new Button();
              btn.setText("Show Alert");
              btn.setOnAction(new EventHandler<ActionEvent>()
              {
                  @Override
                  public void handle(ActionEvent event)
                  {
                      showAlert(stage);
                  }
              });
              
              StackPane root = new StackPane();
              root.getChildren().add(btn);
              stage.setScene(new Scene(root, 300, 250));
              stage.show();
          }
          
          private void showAlert(
              Stage primaryStage)
          {
              Alert alert = new Alert(AlertType.CONFIRMATION);
              alert.initOwner(primaryStage);
              alert.show();
          }

          private void createWindow2(
              Stage stage1)
          {
              Stage stage = new Stage();
              stage.setX(stage1.getX() + 300);
              stage.setY(stage1.getY());
              
              stage.setTitle("Hello World!");
              StackPane root = new StackPane();
              stage.setScene(new Scene(root, 300, 250));
              stage.show();
          }
          
      }
      ---------- END SOURCE ----------

      FREQUENCY : always


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            • Assignee:
              arapte Ambarish Rapte
              Reporter:
              webbuggrp Webbug Group
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              • Created:
                Updated:
                Resolved: