com.sun.javafx.application.LauncherImpl Maven / Gradle / Ivy
/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package com.sun.javafx.application;
import com.sun.javafx.PlatformUtil;
import javafx.application.Application;
import javafx.application.Preloader;
import javafx.application.Preloader.ErrorNotification;
import javafx.application.Preloader.PreloaderNotification;
import javafx.application.Preloader.StateChangeNotification;
import javafx.stage.Stage;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.text.Normalizer;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicReference;
import java.util.jar.Attributes;
import java.util.jar.JarFile;
import java.util.jar.Manifest;
import java.util.Base64;
import java.util.Optional;
import com.sun.javafx.stage.StageHelper;
public class LauncherImpl {
/**
* When passed as launchMode to launchApplication, tells the method that
* launchName is the name of the JavaFX application class to launch.
*/
public static final String LAUNCH_MODE_CLASS = "LM_CLASS";
/**
* When passed as launchMode to launchApplication, tells the method that
* launchName is a path to a JavaFX application jar file to be launched.
*/
public static final String LAUNCH_MODE_JAR = "LM_JAR";
/**
* When passed as launchMode to launchApplication, tells the method that
* launchName is the name of the JavaFX application class within a module
* to be launched. Either the class name will be provided or the main class
* will be defined in the module's descriptor.
*/
public static final String LAUNCH_MODE_MODULE = "LM_MODULE";
// set to true to debug launch issues from Java launcher
private static final boolean trace = false;
// set system property javafx.verbose to true to make the launcher noisy
@SuppressWarnings("removal")
private static final boolean verbose = AccessController.doPrivileged((PrivilegedAction) () ->
Boolean.getBoolean("javafx.verbose"));
private static final String MF_MAIN_CLASS = "Main-Class";
private static final String MF_JAVAFX_MAIN = "JavaFX-Application-Class";
private static final String MF_JAVAFX_PRELOADER = "JavaFX-Preloader-Class";
private static final String MF_JAVAFX_CLASS_PATH = "JavaFX-Class-Path";
private static final String MF_JAVAFX_ARGUMENT_PREFIX = "JavaFX-Argument-";
private static final String MF_JAVAFX_PARAMETER_NAME_PREFIX = "JavaFX-Parameter-Name-";
private static final String MF_JAVAFX_PARAMETER_VALUE_PREFIX = "JavaFX-Parameter-Value-";
// Set to true to simulate a slow download progress
private static final boolean simulateSlowProgress = false;
// Ensure that launchApplication method is only called once
private static AtomicBoolean launchCalled = new AtomicBoolean(false);
// Flag indicating that the toolkit has been started
private static final AtomicBoolean toolkitStarted = new AtomicBoolean(false);
// Exception found during launching
private static volatile RuntimeException launchException = null;
// The current preloader, used for notification in the standalone
// launcher mode
private static Preloader currentPreloader = null;
// Saved preloader class from the launchApplicationWithArgs method (called
// from the Java 8 launcher). It is used in the case where we call main,
// which is turn calls into launchApplication.
private static Class savedPreloaderClass = null;
// The following is used to determine whether the main() method
// has set the CCL in the case where main is called after the FX toolkit
// is started.
private static ClassLoader savedMainCcl = null;
/**
* This method is called by the Application.launch method.
* It must not be called more than once or an exception will be thrown.
*
* Note that it is always called on a thread other than the FX application
* thread, since that thread is only created at startup.
*
* @param appClass application class
* @param args command line arguments
*/
@SuppressWarnings("unchecked")
public static void launchApplication(final Class appClass,
final String[] args) {
Class preloaderClass = savedPreloaderClass;
if (preloaderClass == null) {
@SuppressWarnings("removal")
String preloaderByProperty = AccessController.doPrivileged((PrivilegedAction) () ->
System.getProperty("javafx.preloader"));
if (preloaderByProperty != null) {
try {
preloaderClass = (Class) Class.forName(preloaderByProperty,
false, appClass.getClassLoader());
} catch (Exception e) {
System.err.printf("Could not load preloader class '" + preloaderByProperty +
"', continuing without preloader.");
e.printStackTrace();
}
}
}
launchApplication(appClass, preloaderClass, args);
}
/**
* This method is called by the standalone launcher.
* It must not be called more than once or an exception will be thrown.
*
* Note that it is always called on a thread other than the FX application
* thread, since that thread is only created at startup.
*
* @param appClass application class
* @param preloaderClass preloader class, may be null
* @param args command line arguments
*/
public static void launchApplication(final Class appClass,
final Class preloaderClass,
final String[] args) {
if (com.sun.glass.ui.Application.isEventThread()) {
throw new IllegalStateException("Application launch must not be called on the JavaFX Application Thread");
}
if (launchCalled.getAndSet(true)) {
throw new IllegalStateException("Application launch must not be called more than once");
}
if (! Application.class.isAssignableFrom(appClass)) {
throw new IllegalArgumentException("Error: " + appClass.getName()
+ " is not a subclass of javafx.application.Application");
}
if (preloaderClass != null && ! Preloader.class.isAssignableFrom(preloaderClass)) {
throw new IllegalArgumentException("Error: " + preloaderClass.getName()
+ " is not a subclass of javafx.application.Preloader");
}
// System.err.println("launch standalone app: preloader class = "
// + preloaderClass);
// Create a new Launcher thread and then wait for that thread to finish
final CountDownLatch launchLatch = new CountDownLatch(1);
Thread launcherThread = new Thread(() -> {
try {
launchApplication1(appClass, preloaderClass, args);
} catch (RuntimeException rte) {
launchException = rte;
} catch (Exception ex) {
launchException =
new RuntimeException("Application launch exception", ex);
} catch (Error err) {
launchException =
new RuntimeException("Application launch error", err);
} finally {
launchLatch.countDown();
}
});
launcherThread.setName("JavaFX-Launcher");
launcherThread.start();
// Wait for FX launcher thread to finish before returning to user
try {
launchLatch.await();
} catch (InterruptedException ex) {
throw new RuntimeException("Unexpected exception: ", ex);
}
if (launchException != null) {
throw launchException;
}
}
/**
* This method is called by the Java launcher. This allows us to be launched
* directly from the command line via "java -jar fxapp.jar",
* "java -cp path some.fx.App", or "java -m module/some.fx.App". The launchMode
* argument must be one of "LM_CLASS", "LM_JAR", or "LM_MODULE" or execution will
* abort with an error.
*
* @param launchName The path to a jar file, the application class name to launch,
* or the module and optional class name to launch
* @param launchMode The method of launching the application, one of LM_JAR,
* LM_CLASS, or LM_MODULE
* @param args Application arguments from the command line
*/
public static void launchApplication(final String launchName,
final String launchMode,
final String[] args) {
if (verbose) {
System.err.println("JavaFX launchApplication method: launchMode="
+ launchMode);
}
/*
* For now, just open the jar and get JavaFX-Application-Class and
* JavaFX-Preloader and pass them to launchApplication. In the future
* we'll need to load requested jar files
*/
String mainClassName = null;
String preloaderClassName = null;
String[] appArgs = args;
ClassLoader appLoader = null;
ModuleAccess mainModule = null;
if (launchMode.equals(LAUNCH_MODE_JAR)) {
Attributes jarAttrs = getJarAttributes(launchName);
if (jarAttrs == null) {
abort(null, "Can't get manifest attributes from jar");
}
// If we ever need to check JavaFX-Version, do that here...
// Support JavaFX-Class-Path, but warn that it's deprecated if used
String fxClassPath = jarAttrs.getValue(MF_JAVAFX_CLASS_PATH);
if (fxClassPath != null) {
if (fxClassPath.trim().length() == 0) {
fxClassPath = null;
} else {
if (verbose) {
System.err.println("WARNING: Application jar uses deprecated JavaFX-Class-Path attribute."
+" Please use Class-Path instead.");
}
/*
* create a new ClassLoader to pull in the requested jar files
* OK if it returns null, that just means we didn't need to load
* anything
*/
appLoader = setupJavaFXClassLoader(new File(launchName), fxClassPath);
}
}
// process arguments and parameters if no args have been passed by the launcher
if (args.length == 0) {
appArgs = getAppArguments(jarAttrs);
}
// grab JavaFX-Application-Class
mainClassName = jarAttrs.getValue(MF_JAVAFX_MAIN);
if (mainClassName == null) {
// fall back on Main-Class if no JAC
mainClassName = jarAttrs.getValue(MF_MAIN_CLASS);
if (mainClassName == null) {
// Should not happen as the launcher enforces the presence of Main-Class
abort(null, "JavaFX jar manifest requires a valid JavaFX-Appliation-Class or Main-Class entry");
}
}
mainClassName = mainClassName.trim();
// grab JavaFX-Preloader-Class
preloaderClassName = jarAttrs.getValue(MF_JAVAFX_PRELOADER);
if (preloaderClassName != null) {
preloaderClassName = preloaderClassName.trim();
}
} else if (launchMode.equals(LAUNCH_MODE_CLASS)) {
mainClassName = launchName;
} else if (launchMode.equals(LAUNCH_MODE_MODULE)) {
// This is largely copied from java.base/sun.launcher.LauncherHelper
int i = launchName.indexOf('/');
String moduleName;
if (i == -1) {
moduleName = launchName;
mainClassName = null;
} else {
moduleName = launchName.substring(0, i);
mainClassName = launchName.substring(i+1);
}
mainModule = ModuleAccess.load(moduleName);
// get main class from module descriptor
if (mainClassName == null) {
Optional omc = mainModule.getDescriptor().mainClass();
if (!omc.isPresent()) {
abort(null, "Module %1$s does not have a MainClass attribute, use -m /",
moduleName);
}
mainClassName = omc.get();
}
} else {
abort(new IllegalArgumentException(
"The launchMode argument must be one of LM_CLASS, LM_JAR or LM_MODULE"),
"Invalid launch mode: %1$s", launchMode);
}
// fall back if no MF_JAVAFX_PRELOADER attribute, or not launching using -jar
if (preloaderClassName == null) {
preloaderClassName = System.getProperty("javafx.preloader");
}
if (mainClassName == null) {
abort(null, "No main JavaFX class to launch");
}
// check if we have to load through a custom classloader
if (appLoader != null) {
try {
// reload this class through the app classloader
Class launcherClass = appLoader.loadClass(LauncherImpl.class.getName());
// then invoke the second part of this launcher using reflection
Method lawa = launcherClass.getMethod("launchApplicationWithArgs",
new Class[] { ModuleAccess.class, String.class, String.class, (new String[0]).getClass()});
// set the thread context class loader before we continue, or it won't load properly
Thread.currentThread().setContextClassLoader(appLoader);
lawa.invoke(null, new Object[] {null, mainClassName, preloaderClassName, appArgs});
} catch (Exception e) {
abort(e, "Exception while launching application");
}
} else {
launchApplicationWithArgs(mainModule, mainClassName, preloaderClassName, appArgs);
}
}
// wrapper for Class.forName that handles cases where diacritical marks in the name
// cause the class to not be loaded, also largely copied from LauncherHelper.java
// this method returns null if the class cannot be loaded
private static Class loadClass(final ModuleAccess mainModule, final String className) {
Class clz = null;
final ClassLoader loader = Thread.currentThread().getContextClassLoader();
// loader is ignored for modular mode
// the only time we need to use a separate loader is LM_JAR with
// a MF_JAVAFX_CLASS_PATH attribute which is deprecated
if (mainModule != null) {
clz = mainModule.classForName(className);
} else {
try {
clz = Class.forName(className, true, loader);
} catch (ClassNotFoundException | NoClassDefFoundError cnfe) {}
}
if (clz == null && PlatformUtil.isMac() && Normalizer.isNormalized(className, Normalizer.Form.NFD)) {
// macOS may have decomposed diacritical marks in mainClassName
// recompose them and try again
String cn = Normalizer.normalize(className, Normalizer.Form.NFC);
if (mainModule != null) {
clz = mainModule.classForName(cn);
} else {
try {
clz = Class.forName(cn, true, loader);
} catch (ClassNotFoundException | NoClassDefFoundError cnfe) {}
}
}
return clz;
}
// Must be public since we could be called from a different class loader
public static void launchApplicationWithArgs(final ModuleAccess mainModule,
final String mainClassName,
final String preloaderClassName, String[] args) {
try {
startToolkit();
} catch (InterruptedException ex) {
abort(ex, "Toolkit initialization error", mainClassName);
}
Class appClass;
Class preClass = null;
Class tempAppClass = null;
final AtomicReference> tmpClassRef = new AtomicReference<>();
final AtomicReference> preClassRef = new AtomicReference<>();
PlatformImpl.runAndWait(() -> {
Class clz = loadClass(mainModule, mainClassName);
if (clz == null) {
if (mainModule != null) {
abort(null, "Missing JavaFX application class %1$s in module %2$s",
mainClassName, mainModule.getName());
} else {
abort(null, "Missing JavaFX application class %1$s", mainClassName);
}
}
tmpClassRef.set(clz);
if (preloaderClassName != null) {
// TODO: modular preloader?
clz = loadClass(null, preloaderClassName);
if (clz == null) {
abort(null, "Missing JavaFX preloader class %1$s", preloaderClassName);
}
if (!Preloader.class.isAssignableFrom(clz)) {
abort(null, "JavaFX preloader class %1$s does not extend javafx.application.Preloader", clz.getName());
}
preClassRef.set(clz.asSubclass(Preloader.class));
}
});
preClass = preClassRef.get();
tempAppClass = tmpClassRef.get();
// Save the preloader class in a static field for later use when
// main calls back into launchApplication.
savedPreloaderClass = preClass;
// If there is a public static void main(String[]) method then call it
// otherwise just hand off to the other launchApplication method
Exception theEx = null;
try {
Method mainMethod = tempAppClass.getMethod("main",
new Class[] { (new String[0]).getClass() });
if (verbose) {
System.err.println("Calling main(String[]) method");
}
savedMainCcl = Thread.currentThread().getContextClassLoader();
mainMethod.invoke(null, new Object[] { args });
return;
} catch (NoSuchMethodException | IllegalAccessException ex) {
theEx = ex;
savedPreloaderClass = null;
if (verbose) {
System.err.println("WARNING: Cannot access application main method: " + ex);
}
} catch (InvocationTargetException ex) {
ex.printStackTrace();
abort(null, "Exception running application %1$s", tempAppClass.getName());
return;
}
// Verify appClass extends Application
if (!Application.class.isAssignableFrom(tempAppClass)) {
abort(theEx, "JavaFX application class %1$s does not extend javafx.application.Application", tempAppClass.getName());
}
appClass = tempAppClass.asSubclass(Application.class);
if (verbose) {
System.err.println("Launching application directly");
}
launchApplication(appClass, preClass, args);
}
private static URL fileToURL(File file) throws IOException {
return file.getCanonicalFile().toURI().toURL();
}
private static ClassLoader setupJavaFXClassLoader(File appJar, String fxClassPath) {
try {
File baseDir = appJar.getParentFile();
ArrayList jcpList = new ArrayList();
// Add in the jars from the JavaFX-Class-Path entry
// TODO: should check current classpath for duplicate entries and ignore them
String cp = fxClassPath;
if (cp != null) {
// these paths are relative to baseDir, which should be the
// directory containing the app jar file
while (cp.length() > 0) {
int pathSepIdx = cp.indexOf(" ");
if (pathSepIdx < 0) {
String pathElem = cp;
File f = (baseDir == null) ?
new File(pathElem) : new File(baseDir, pathElem);
if (f.exists()) {
jcpList.add(fileToURL(f));
} else if (verbose) {
System.err.println("Class Path entry \""+pathElem
+"\" does not exist, ignoring");
}
break;
} else if (pathSepIdx > 0) {
String pathElem = cp.substring(0, pathSepIdx);
File f = (baseDir == null) ?
new File(pathElem) : new File(baseDir, pathElem);
if (f.exists()) {
jcpList.add(fileToURL(f));
} else if (verbose) {
System.err.println("Class Path entry \""+pathElem
+"\" does not exist, ignoring");
}
}
cp = cp.substring(pathSepIdx + 1);
}
}
// don't bother if there's nothing to add
if (!jcpList.isEmpty()) {
ArrayList urlList = new ArrayList<>();
// prepend the existing classpath
// this will already have the app jar, so no need to worry about it
cp = System.getProperty("java.class.path");
if (cp != null) {
while (cp.length() > 0) {
int pathSepIdx = cp.indexOf(File.pathSeparatorChar);
if (pathSepIdx < 0) {
String pathElem = cp;
urlList.add(fileToURL(new File(pathElem)));
break;
} else if (pathSepIdx > 0) {
String pathElem = cp.substring(0, pathSepIdx);
urlList.add(fileToURL(new File(pathElem)));
}
cp = cp.substring(pathSepIdx + 1);
}
}
// and finally append the JavaFX-Class-Path entries
urlList.addAll(jcpList);
URL[] urls = urlList.toArray(new URL[0]);
if (verbose) {
System.err.println("===== URL list");
for (int i = 0; i < urls.length; i++) {
System.err.println("" + urls[i]);
}
System.err.println("=====");
}
return new URLClassLoader(urls, ClassLoader.getPlatformClassLoader());
}
} catch (Exception ex) {
if (trace) {
System.err.println("Exception creating JavaFX class loader: "+ex);
ex.printStackTrace();
}
}
return null;
}
private static String decodeBase64(String inp) {
return new String(Base64.getDecoder().decode(inp));
}
private static String[] getAppArguments(Attributes attrs) {
List args = new LinkedList();
int idx = 1;
String argNamePrefix = MF_JAVAFX_ARGUMENT_PREFIX;
while (attrs.getValue(argNamePrefix + idx) != null) {
args.add(decodeBase64(attrs.getValue(argNamePrefix + idx)));
idx++;
}
String paramNamePrefix = MF_JAVAFX_PARAMETER_NAME_PREFIX;
String paramValuePrefix = MF_JAVAFX_PARAMETER_VALUE_PREFIX;
idx = 1;
while (attrs.getValue(paramNamePrefix + idx) != null) {
String k = decodeBase64(attrs.getValue(paramNamePrefix + idx));
String v = null;
if (attrs.getValue(paramValuePrefix + idx) != null) {
v = decodeBase64(attrs.getValue(paramValuePrefix + idx));
}
args.add("--" + k + "=" + (v != null ? v : ""));
idx++;
}
return (String[]) args.toArray(new String[0]);
}
// FIXME: needs localization, since these are presented to the user
private static void abort(final Throwable cause, final String fmt, final Object... args) {
String msg = String.format(fmt, args);
if (msg != null) {
System.err.println(msg);
}
if (trace) {
if (cause != null) {
cause.printStackTrace();
} else {
Thread.dumpStack();
}
}
System.exit(1);
}
private static Attributes getJarAttributes(String jarPath) {
JarFile jarFile = null;
try {
jarFile = new JarFile(jarPath);
Manifest manifest = jarFile.getManifest();
if (manifest == null) {
abort(null, "No manifest in jar file %1$s", jarPath);
}
return manifest.getMainAttributes();
} catch (IOException ioe) {
abort(ioe, "Error launching jar file %1%s", jarPath);
} finally {
try {
jarFile.close();
} catch (IOException ioe) {}
}
return null;
}
private static void startToolkit() throws InterruptedException {
if (toolkitStarted.getAndSet(true)) {
return;
}
final CountDownLatch startupLatch = new CountDownLatch(1);
// Note, this method is called on the FX Application Thread
PlatformImpl.startup(() -> startupLatch.countDown());
// Wait for FX platform to start
startupLatch.await();
}
private static volatile boolean error = false;
private static volatile Throwable pConstructorError = null;
private static volatile Throwable pInitError = null;
private static volatile Throwable pStartError = null;
private static volatile Throwable pStopError = null;
private static volatile Throwable constructorError = null;
private static volatile Throwable initError = null;
private static volatile Throwable startError = null;
private static volatile Throwable stopError = null;
private static void launchApplication1(final Class appClass,
final Class preloaderClass,
final String[] args) throws Exception {
startToolkit();
if (savedMainCcl != null) {
/*
* The toolkit was already started by the java launcher, and the
* main method of the application class was called. Check to see
* whether the CCL has been changed. If so, then we need
* to pass the context class loader to the FX app thread so that it
* correctly picks up the current setting.
*/
final ClassLoader ccl = Thread.currentThread().getContextClassLoader();
if (ccl != null && ccl != savedMainCcl) {
PlatformImpl.runLater(() -> {
Thread.currentThread().setContextClassLoader(ccl);
});
}
}
final AtomicBoolean pStartCalled = new AtomicBoolean(false);
final AtomicBoolean startCalled = new AtomicBoolean(false);
final AtomicBoolean exitCalled = new AtomicBoolean(false);
final AtomicBoolean pExitCalled = new AtomicBoolean(false);
final CountDownLatch shutdownLatch = new CountDownLatch(1);
final CountDownLatch pShutdownLatch = new CountDownLatch(1);
final PlatformImpl.FinishListener listener = new PlatformImpl.FinishListener() {
@Override public void idle(boolean implicitExit) {
if (!implicitExit) {
return;
}
// System.err.println("JavaFX Launcher: system is idle");
if (startCalled.get()) {
shutdownLatch.countDown();
} else if (pStartCalled.get()) {
pShutdownLatch.countDown();
}
}
@Override public void exitCalled() {
// System.err.println("JavaFX Launcher: received exit notification");
exitCalled.set(true);
shutdownLatch.countDown();
}
};
PlatformImpl.addListener(listener);
try {
final AtomicReference pldr = new AtomicReference<>();
if (preloaderClass != null) {
// Construct an instance of the preloader on the FX thread, then
// call its init method on this (launcher) thread. Then call
// the start method on the FX thread.
PlatformImpl.runAndWait(() -> {
try {
Constructor c = preloaderClass.getConstructor();
pldr.set(c.newInstance());
// Set startup parameters
ParametersImpl.registerParameters(pldr.get(), new ParametersImpl(args));
} catch (Throwable t) {
System.err.println("Exception in Preloader constructor");
pConstructorError = t;
error = true;
}
});
}
currentPreloader = pldr.get();
// Call init method unless exit called or error detected
if (currentPreloader != null && !error && !exitCalled.get()) {
try {
// Call the application init method (on the Launcher thread)
currentPreloader.init();
} catch (Throwable t) {
System.err.println("Exception in Preloader init method");
pInitError = t;
error = true;
}
}
// Call start method unless exit called or error detected
if (currentPreloader != null && !error && !exitCalled.get()) {
// Call the application start method on FX thread
PlatformImpl.runAndWait(() -> {
try {
pStartCalled.set(true);
// Create primary stage and call preloader start method
final Stage primaryStage = new Stage();
StageHelper.setPrimary(primaryStage, true);
currentPreloader.start(primaryStage);
} catch (Throwable t) {
System.err.println("Exception in Preloader start method");
pStartError = t;
error = true;
}
});
// Notify preloader of progress
if (!error && !exitCalled.get()) {
notifyProgress(currentPreloader, 0.0);
}
}
// Construct an instance of the application on the FX thread, then
// call its init method on this (launcher) thread. Then call
// the start method on the FX thread.
final AtomicReference app = new AtomicReference<>();
if (!error && !exitCalled.get()) {
if (currentPreloader != null) {
if (simulateSlowProgress) {
for (int i = 0; i < 100; i++) {
notifyProgress(currentPreloader, i / 100.0);
Thread.sleep(10);
}
}
notifyProgress(currentPreloader, 1.0);
notifyStateChange(currentPreloader,
StateChangeNotification.Type.BEFORE_LOAD, null);
}
PlatformImpl.runAndWait(() -> {
try {
Constructor c = appClass.getConstructor();
app.set(c.newInstance());
// Set startup parameters
ParametersImpl.registerParameters(app.get(), new ParametersImpl(args));
PlatformImpl.setApplicationName(appClass);
} catch (Throwable t) {
System.err.println("Exception in Application constructor");
constructorError = t;
error = true;
}
});
}
final Application theApp = app.get();
// Call init method unless exit called or error detected
if (!error && !exitCalled.get()) {
if (currentPreloader != null) {
notifyStateChange(currentPreloader,
StateChangeNotification.Type.BEFORE_INIT, theApp);
}
try {
// Call the application init method (on the Launcher thread)
theApp.init();
} catch (Throwable t) {
System.err.println("Exception in Application init method");
initError = t;
error = true;
}
}
// Call start method unless exit called or error detected
if (!error && !exitCalled.get()) {
if (currentPreloader != null) {
notifyStateChange(currentPreloader,
StateChangeNotification.Type.BEFORE_START, theApp);
}
// Call the application start method on FX thread
PlatformImpl.runAndWait(() -> {
try {
startCalled.set(true);
// Create primary stage and call application start method
final Stage primaryStage = new Stage();
StageHelper.setPrimary(primaryStage, true);
theApp.start(primaryStage);
} catch (Throwable t) {
System.err.println("Exception in Application start method");
startError = t;
error = true;
}
});
}
if (!error) {
shutdownLatch.await();
// System.err.println("JavaFX Launcher: time to call stop");
}
// Call stop method if start was called
if (startCalled.get()) {
// Call Application stop method on FX thread
PlatformImpl.runAndWait(() -> {
try {
theApp.stop();
} catch (Throwable t) {
System.err.println("Exception in Application stop method");
stopError = t;
error = true;
}
});
}
if (error) {
if (pConstructorError != null) {
throw new RuntimeException("Unable to construct Preloader instance: "
+ appClass, pConstructorError);
} else if (pInitError != null) {
throw new RuntimeException("Exception in Preloader init method",
pInitError);
} else if(pStartError != null) {
throw new RuntimeException("Exception in Preloader start method",
pStartError);
} else if (pStopError != null) {
throw new RuntimeException("Exception in Preloader stop method",
pStopError);
} else if (constructorError != null) {
String msg = "Unable to construct Application instance: " + appClass;
if (!notifyError(msg, constructorError)) {
throw new RuntimeException(msg, constructorError);
}
} else if (initError != null) {
String msg = "Exception in Application init method";
if (!notifyError(msg, initError)) {
throw new RuntimeException(msg, initError);
}
} else if(startError != null) {
String msg = "Exception in Application start method";
if (!notifyError(msg, startError)) {
throw new RuntimeException(msg, startError);
}
} else if (stopError != null) {
String msg = "Exception in Application stop method";
if (!notifyError(msg, stopError)) {
throw new RuntimeException(msg, stopError);
}
}
}
} finally {
PlatformImpl.removeListener(listener);
PlatformImpl.tkExit();
}
}
private static void notifyStateChange(final Preloader preloader,
final StateChangeNotification.Type type,
final Application app) {
PlatformImpl.runAndWait(() -> preloader.handleStateChangeNotification(
new StateChangeNotification(type, app)));
}
private static void notifyProgress(final Preloader preloader, final double d) {
PlatformImpl.runAndWait(() -> preloader.handleProgressNotification(
new Preloader.ProgressNotification(d)));
}
private static boolean notifyError(final String msg, final Throwable constructorError) {
final AtomicBoolean result = new AtomicBoolean(false);
PlatformImpl.runAndWait(() -> {
if (currentPreloader != null) {
try {
ErrorNotification evt = new ErrorNotification(null, msg, constructorError);
boolean rval = currentPreloader.handleErrorNotification(evt);
result.set(rval);
} catch (Throwable t) {
t.printStackTrace();
}
}
});
return result.get();
}
private static void notifyCurrentPreloader(final PreloaderNotification pe) {
PlatformImpl.runAndWait(() -> {
if (currentPreloader != null) {
currentPreloader.handleApplicationNotification(pe);
}
});
}
public static void notifyPreloader(Application app, final PreloaderNotification info) {
if (launchCalled.get()) {
// Standalone launcher mode
notifyCurrentPreloader(info);
return;
}
}
// Not an instantiable class.
private LauncherImpl() {
// Should never get here.
throw new InternalError();
}
}
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