java从选项卡中打开新选项卡并选择新选项卡

Question

我对如何从已打开的选项卡打开选项卡感兴趣。例如，我想打开新选项卡并自动将其激活

public class Main extends Application {

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

    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("Tabs");
        Group root = new Group();
        Scene scene = new Scene(root, 400, 250, Color.WHITE);

        TabPane tabPane = new TabPane();

        BorderPane borderPane = new BorderPane();
        for (int i = 0; i < 5; i++) {
            Tab tab = new Tab();
            tab.setText("Tab" + i);
            HBox hbox = new HBox(new Button("Open new tab"));
            hbox.getChildren().add(new Label("Tab" + i));
            hbox.setAlignment(Pos.CENTER);
            tab.setContent(hbox);
            tabPane.getTabs().add(tab);
        }

        borderPane.setCenter(tabPane);
        root.getChildren().add(borderPane);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

}

有没有办法做到这一点

Answer 1

我不太确定，但我相信你想要这样的东西：

public class Main extends Application {

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

    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("Tabs");
        Group root = new Group();
        Scene scene = new Scene(root, 400, 250, Color.WHITE);

        final TabPane tabPane = new TabPane();

        BorderPane borderPane = new BorderPane();
        for (int i = 0; i < 5; i++) {
            Tab tab = new Tab();
            tab.setText("Tab" + i);
            Button btn = new Button("Open new tab");
            btn.setOnAction(new EventHandler<ActionEvent>() {
                @Override
                public void handle(ActionEvent e) {
                    int j = tabPane.getTabs().size();
                    Tab tab = new Tab();
                    tab.setText("Tab" + j);
                    Label newTabLabel = new Label("The new and Awesome selected:");
                    HBox hbox = new HBox(newTabLabel);
                    hbox.getChildren().add(new Label("Tab" + j));
                    hbox.setAlignment(Pos.CENTER);
                    tab.setContent(hbox);
                    tabPane.getTabs().add(tab);
                    tabPane.getSelectionModel().select(j);
                }
            });
            HBox hbox = new HBox(btn);
            hbox.getChildren().add(new Label("Tab" + i));
            hbox.setAlignment(Pos.CENTER);
            tab.setContent(hbox);
            tabPane.getTabs().add(tab);
        }

        borderPane.setCenter(tabPane);
        root.getChildren().add(borderPane);
        primaryStage.setScene(scene);
        primaryStage.show();
    }

}