WebClient/src/main/java/org/openautonomousconnection/webclient/FxBootstrap.java

package org.openautonomousconnection.webclient;

import javafx.application.Platform;
import javafx.embed.swing.JFXPanel;

import java.util.concurrent.atomic.AtomicBoolean;

/**
 * Initializes the JavaFX Toolkit exactly once for Swing embedding.
 */
public final class FxBootstrap {

    private static final AtomicBoolean INITIALIZED = new AtomicBoolean(false);

    private FxBootstrap() {
        // Utility class
    }

    /**
     * Ensures JavaFX Toolkit is initialized.
     * Must be called before any Platform.runLater() usage.
     */
    public static void ensureInitialized() {
        if (!INITIALIZED.compareAndSet(false, true)) {
            return;
        }

        // Creating a JFXPanel initializes the JavaFX toolkit in Swing apps.
        new JFXPanel();

        // Keep JavaFX runtime alive even if last window closes.
        Platform.setImplicitExit(false);
    }
}