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POFocus Traversal Policy in TitledPane
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copied!<p>On <a href="https://stackoverflow.com/questions/15238928/javafx-change-focus-traversal-policy">JavaFX: How to change the focus traversal policy?</a> Alexander Kirov show how to customize the focus traversal policy for a JavaFX application. It works fine, but not for <code>TitledPane</code>s. If a node in a <code>TitledPane</code> has focus, the setted <code>TraversalEngine</code> is not called.</p> <p>Here is a full example to show this phenomenon:</p> <pre><code>package org.example; import com.sun.javafx.scene.traversal.Direction; import com.sun.javafx.scene.traversal.TraversalEngine; import javafx.application.Application; import javafx.scene.Node; import javafx.scene.Scene; import javafx.scene.control.Button; import javafx.scene.control.TitledPane; import javafx.scene.layout.Pane; import javafx.scene.layout.VBox; import javafx.stage.Stage; public class FocusTest extends Application { @Override public void start(Stage primaryStage) throws Exception { // Create UI final VBox root = new VBox(); final Button foo = new Button("foo"); foo.setId("foo"); root.getChildren().add(foo); final Button bar = new Button("bar"); bar.setId("bar"); final Pane content = new Pane(); content.getChildren().add(bar); final TitledPane tp = new TitledPane("tp", content); root.getChildren().add(tp); // Set TraversalEngine final TraversalEngine te = new TraversalEngine(root, false) { @Override public void trav(Node owner, Direction direction) { System.out.printf("trav owner: %s, direction: %s%n", owner.getId(), direction); switch (direction) { case DOWN: case RIGHT: case NEXT: if (owner == foo) { bar.requestFocus(); } else if (owner == bar) { foo.requestFocus(); } break; case LEFT: case PREVIOUS: case UP: if (owner == foo) { bar.requestFocus(); } else if (owner == bar) { foo.requestFocus(); } break; } } }; root.setImpl_traversalEngine(te); // Show Scene final Scene scene = new Scene(root); primaryStage.setHeight(200); primaryStage.setScene(scene); primaryStage.show(); } public static void main(String[] args) { launch(args); } } </code></pre> <p>The root of the scene is a <code>VBox</code> and the custom <code>TraversalEngine</code> is set to it. If the button <code>foo</code> has the focus and I press [Tab] then <code>te.trav</code> is called and the focus is set to <code>bar</code>. That's how I expected. But when <code>bar</code> has the focus, <code>te.trav</code> is not called. <code>bar</code> is a child of the <code>TitledPane</code>. This behaviour is shown in <a href="https://i.stack.imgur.com/kWqGQ.png" rel="nofollow noreferrer">1</a>.</p> <p>Has anyone a solution for this?</p> <p><img src="https://i.stack.imgur.com/kWqGQ.png" alt="Focus Traversal in TitledPane"></p>

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