JavaFXSafeRunner.java
- /*
- * *************************************************************************************************************************************************************
- *
- * SteelBlue: DCI User Interfaces
- * http://tidalwave.it/projects/steelblue
- *
- * Copyright (C) 2015 - 2025 by Tidalwave s.a.s. (http://tidalwave.it)
- *
- * *************************************************************************************************************************************************************
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
- * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
- *
- * *************************************************************************************************************************************************************
- *
- * git clone https://bitbucket.org/tidalwave/steelblue-src
- * git clone https://github.com/tidalwave-it/steelblue-src
- *
- * *************************************************************************************************************************************************************
- */
- package it.tidalwave.ui.javafx.impl.util;
- import jakarta.annotation.Nonnull;
- import java.util.concurrent.Callable;
- import java.util.concurrent.CountDownLatch;
- import java.util.concurrent.TimeUnit;
- import java.util.concurrent.atomic.AtomicReference;
- import javafx.application.Platform;
- import it.tidalwave.ui.javafx.impl.DefaultNodeAndDelegate;
- import lombok.SneakyThrows;
- import lombok.experimental.UtilityClass;
- import lombok.extern.slf4j.Slf4j;
- /***************************************************************************************************************************************************************
- *
- * @author Fabrizio Giudici
- *
- **************************************************************************************************************************************************************/
- @UtilityClass @Slf4j
- public final class JavaFXSafeRunner
- {
- private static final String P_TIMEOUT = DefaultNodeAndDelegate.class.getName() + ".initTimeout";
- private static final int INITIALIZER_TIMEOUT = Integer.getInteger(P_TIMEOUT, 10);
- /***********************************************************************************************************************************************************
- * {@return the value provided by the given {@link Callable}, running it in the JavaFX thread}.
- * @param callable the callable
- **********************************************************************************************************************************************************/
- @SneakyThrows
- public static <T> T runSafelyAndWait (@Nonnull final Callable<T> callable)
- throws Exception
- {
- if (Platform.isFxApplicationThread())
- {
- return callable.call();
- }
- final var latch = new CountDownLatch(1);
- final var result = new AtomicReference<T>();
- final var exception = new AtomicReference<Throwable>();
- final var timeoutMessage = String.format("Likely deadlock in the JavaFX Thread. If you need longer time with the debugger, set -D%s=<v> (current : %s)",
- P_TIMEOUT, INITIALIZER_TIMEOUT);
- Platform.runLater(() ->
- {
- try
- {
- result.set(callable.call());
- }
- catch (Throwable e)
- {
- exception.set(e);
- }
- finally
- {
- latch.countDown();
- }
- });
- try
- {
- log.debug("Waiting for JavaFX thread...");
- if (!latch.await(INITIALIZER_TIMEOUT, TimeUnit.SECONDS))
- {
- throw new RuntimeException(timeoutMessage);
- }
- }
- catch (InterruptedException e)
- {
- log.info("Interrupted");
- Thread.currentThread().interrupt();
- throw new RuntimeException(e);
- }
- if (exception.get() != null)
- {
- throw exception.get();
- }
- return result.get();
- }
- }