AbstractJavaFXSpringApplication.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.spi;
import javax.annotation.CheckForNull;
import jakarta.annotation.Nonnull;
import java.util.Objects;
import java.util.Optional;
import java.util.TreeMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.io.IOException;
import javafx.stage.Stage;
import javafx.application.Application;
import javafx.application.Platform;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ConfigurableApplicationContext;
import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
import it.tidalwave.ui.core.message.PowerOffEvent;
import it.tidalwave.ui.core.message.PowerOnEvent;
import it.tidalwave.ui.javafx.ApplicationPresentationAssembler;
import it.tidalwave.ui.javafx.JavaFXApplicationWithSplash;
import it.tidalwave.ui.javafx.JavaFXSafeProxyCreator;
import it.tidalwave.ui.javafx.NodeAndDelegate;
import it.tidalwave.ui.javafx.PresentationAssembler;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import it.tidalwave.util.Key;
import it.tidalwave.util.PreferencesHandler;
import it.tidalwave.util.TypeSafeMap;
import it.tidalwave.util.annotation.VisibleForTesting;
import it.tidalwave.messagebus.MessageBus;
import lombok.AccessLevel;
import lombok.Getter;
import lombok.RequiredArgsConstructor;
import lombok.With;
import static lombok.AccessLevel.PRIVATE;
/***************************************************************************************************************************************************************
*
* A base class for all variants of JavaFX applications with Spring.
*
* @author Fabrizio Giudici
*
**************************************************************************************************************************************************************/
public abstract class AbstractJavaFXSpringApplication extends JavaFXApplicationWithSplash
{
/***********************************************************************************************************************************************************
* The initialisation parameters to pass to {@link #launch(Class, InitParameters)}.
* @since 1.1-ALPHA-6
**********************************************************************************************************************************************************/
@RequiredArgsConstructor(access = PRIVATE) @With
public static class InitParameters
{
@Nonnull
private final String[] args;
@Nonnull
private final String applicationName;
@Nonnull
private final String logFolderPropertyName;
private final boolean implicitExit;
@Nonnull
private final TypeSafeMap propertyMap;
@Nonnull
public <T> InitParameters withProperty (@Nonnull final Key<T> key, @Nonnull final T value)
{
return new InitParameters(args, applicationName, logFolderPropertyName, implicitExit, propertyMap.with(key, value));
}
public void validate()
{
requireNotEmpty(applicationName, "applicationName");
requireNotEmpty(logFolderPropertyName, "logFolderPropertyName");
}
private void requireNotEmpty (@CheckForNull final String name, @Nonnull final String message)
{
if (name == null || name.isEmpty())
{
throw new IllegalArgumentException(message);
}
}
}
public static final String APPLICATION_MESSAGE_BUS_BEAN_NAME = "applicationMessageBus";
// Don't use Slf4j and its static logger - give Main a chance to initialize things
private final Logger log = LoggerFactory.getLogger(AbstractJavaFXSpringApplication.class);
private ConfigurableApplicationContext applicationContext;
private Optional<MessageBus> messageBus = Optional.empty();
@Getter(AccessLevel.PACKAGE) @Nonnull
private final ExecutorService executorService = Executors.newSingleThreadExecutor();
/***********************************************************************************************************************************************************
* Launches the application.
* @param appClass the class of the application to instantiate
* @param initParameters the initialisation parameters
**********************************************************************************************************************************************************/
@SuppressFBWarnings("DM_EXIT")
public static void launch (@Nonnull final Class<? extends Application> appClass, @Nonnull final InitParameters initParameters)
{
try
{
initParameters.validate();
System.setProperty(PreferencesHandler.PROP_APP_NAME, initParameters.applicationName);
Platform.setImplicitExit(initParameters.implicitExit);
final var preferencesHandler = PreferencesHandler.getInstance();
initParameters.propertyMap.forEach(preferencesHandler::setProperty);
System.setProperty(initParameters.logFolderPropertyName, preferencesHandler.getLogFolder().toAbsolutePath().toString());
JavaFXSafeProxyCreator.setLogDelegateInvocations(initParameters.propertyMap.getOptional(K_LOG_DELEGATE_INVOCATIONS).orElse(false));
Application.launch(appClass, initParameters.args);
}
catch (Throwable t)
{
// Don't use logging facilities here, they could be not initialized
t.printStackTrace();
System.exit(-1);
}
}
/***********************************************************************************************************************************************************
* {@return an empty set of parameters} to populate and pass to {@link #launch(Class, InitParameters)}
* @since 1.1-ALPHA-6
**********************************************************************************************************************************************************/
@Nonnull
protected static InitParameters params()
{
return new InitParameters(new String[0], "", "", true, TypeSafeMap.newInstance());
}
/***********************************************************************************************************************************************************
*
**********************************************************************************************************************************************************/
@Override @Nonnull
protected NodeAndDelegate<?> createParent()
throws IOException
{
return NodeAndDelegate.load(getClass(), applicationFxml);
}
/***********************************************************************************************************************************************************
*
**********************************************************************************************************************************************************/
@Override
protected void initializeInBackground()
{
log.info("initializeInBackground()");
try
{
logProperties();
// TODO: workaround for NWRCA-41
System.setProperty("it.tidalwave.util.spring.ClassScanner.basePackages", "it");
applicationContext = createApplicationContext();
applicationContext.registerShutdownHook(); // this actually seems not working, onClosing() does
if (applicationContext.getBeanFactory().containsBean(APPLICATION_MESSAGE_BUS_BEAN_NAME))
{
messageBus = Optional.of(applicationContext.getBeanFactory().getBean(APPLICATION_MESSAGE_BUS_BEAN_NAME, MessageBus.class));
}
}
catch (Throwable t)
{
log.error("", t);
}
}
/***********************************************************************************************************************************************************
* {@return a created application context.}
**********************************************************************************************************************************************************/
@Nonnull
protected abstract ConfigurableApplicationContext createApplicationContext();
/***********************************************************************************************************************************************************
* {@inheritDoc}
**********************************************************************************************************************************************************/
@Override
protected final void onStageCreated (@Nonnull final Stage stage, @Nonnull final NodeAndDelegate<?> applicationNad)
{
assert Platform.isFxApplicationThread();
JavaFXSafeProxyCreator.getJavaFxBinder().setMainWindow(stage);
onStageCreated2(applicationNad);
}
/***********************************************************************************************************************************************************
* This method is separated to make testing simpler (it does not depend on JavaFX stuff).
* @param applicationNad
**********************************************************************************************************************************************************/
@VisibleForTesting final void onStageCreated2 (@Nonnull final NodeAndDelegate<?> applicationNad)
{
final var delegate = applicationNad.getDelegate();
if (PresentationAssembler.class.isAssignableFrom(delegate.getClass()))
{
((PresentationAssembler)delegate).assemble(applicationContext);
}
runApplicationAssemblers(applicationNad);
executorService.execute(() ->
{
onStageCreated(applicationContext);
messageBus.ifPresent(mb -> mb.publish(new PowerOnEvent()));
});
}
/***********************************************************************************************************************************************************
* Invoked when the {@link Stage} is created and the {@link ApplicationContext} has been initialized. Typically, the main class overrides this, retrieves
* a reference to the main controller and boots it. This method is executed in a background thread.
* @param applicationContext the application context
**********************************************************************************************************************************************************/
protected void onStageCreated (@Nonnull final ApplicationContext applicationContext)
{
}
/***********************************************************************************************************************************************************
* {@inheritDoc}
**********************************************************************************************************************************************************/
@Override
protected void onClosing()
{
messageBus.ifPresent(mb -> mb.publish(new PowerOffEvent()));
applicationContext.close();
}
/***********************************************************************************************************************************************************
*
**********************************************************************************************************************************************************/
private void runApplicationAssemblers (@Nonnull final NodeAndDelegate applicationNad)
{
Objects.requireNonNull(applicationContext, "applicationContext is null");
applicationContext.getBeansOfType(ApplicationPresentationAssembler.class).values().forEach(a -> a.assemble(applicationNad.getDelegate()));
}
/***********************************************************************************************************************************************************
* Logs all the system properties.
**********************************************************************************************************************************************************/
private void logProperties()
{
for (final var e : new TreeMap<>(System.getProperties()).entrySet())
{
log.debug("{}: {}", e.getKey(), e.getValue());
}
}
}