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package simulator;
import java.awt.Component;
import java.lang.reflect.InvocationTargetException;
import java.util.Locale;
import java.util.Objects;
import java.util.concurrent.atomic.AtomicReference;
import javax.swing.UIManager;
import javax.swing.SwingUtilities;
import events.VSRegisteredEvents;
import prefs.VSDefaultPrefs;
import prefs.VSPrefs;
/**
* The class VSMain. This class contains the static main method. The simulator
* starts here!
*
* @author Paul C. Buetow
*/
public class VSMain {
interface SplashScreenLauncher {
void show();
}
interface StartupDelay {
void pause() throws InterruptedException;
}
interface SimulatorFrameFactory {
VSSimulatorFrame create(VSPrefs prefs, Component relativeTo);
}
private static final SplashScreenLauncher DEFAULT_SPLASH_LAUNCHER =
new SplashScreenLauncher() {
public void show() {
VSSplashScreen splash = new VSSplashScreen();
splash.showSplash();
}
};
private static final StartupDelay DEFAULT_STARTUP_DELAY =
new StartupDelay() {
public void pause() throws InterruptedException {
Thread.sleep(3000);
}
};
private static final SimulatorFrameFactory DEFAULT_FRAME_FACTORY =
new SimulatorFrameFactory() {
public VSSimulatorFrame create(VSPrefs prefs,
Component relativeTo) {
return new VSSimulatorFrame(prefs, relativeTo);
}
};
static volatile SplashScreenLauncher splashScreenLauncher =
DEFAULT_SPLASH_LAUNCHER;
static volatile StartupDelay startupDelay = DEFAULT_STARTUP_DELAY;
static volatile SimulatorFrameFactory simulatorFrameFactory =
DEFAULT_FRAME_FACTORY;
/** The global preferences */
public static VSPrefs prefs;
/**
* Instantiates a new VSMain object.
*
* @param prefs the prefs
*/
public VSMain(VSPrefs prefs) {
init(prefs, null);
}
/**
* Instantiates a new VSMain object
*
* @param prefs the prefs
* @param relativeTo the component to open the window relative to
*/
public VSMain(VSPrefs prefs, Component relativeTo) {
init(prefs, relativeTo);
}
/**
* Inits the VSMain object.
*
* @param prefs the prefs
* @param relativeTo the component to open the window relative to
*/
private void init(VSPrefs prefs, Component relativeTo) {
//VSSimulatorFrame simulatorFrame =
VSMain.prefs = prefs;
new VSSimulatorFrame(prefs, relativeTo);
}
/**
* Resolves the initial simulation filename from the CLI arguments.
*
* @param args the arguments passed to main
*
* @return the first non-blank argument, or null if none was provided
*/
static String resolveStartupSimulationFile(String[] args) {
if (args == null || args.length == 0 || args[0] == null)
return null;
String filename = args[0].trim();
return filename.isEmpty() ? null : filename;
}
static VSSimulatorFrame launchSimulatorFrame(VSPrefs prefs,
Component relativeTo,
String startupSimulationFile) {
return launchSimulatorFrame(prefs, relativeTo, startupSimulationFile,
simulatorFrameFactory);
}
static VSSimulatorFrame launchSimulatorFrame(VSPrefs prefs,
Component relativeTo,
String startupSimulationFile,
SimulatorFrameFactory factory) {
Objects.requireNonNull(prefs, "prefs");
Objects.requireNonNull(factory, "factory");
AtomicReference<VSSimulatorFrame> frameRef =
new AtomicReference<VSSimulatorFrame>();
Runnable openWindow = new Runnable() {
public void run() {
VSSimulatorFrame simulatorFrame =
factory.create(prefs, relativeTo);
frameRef.set(simulatorFrame);
if (startupSimulationFile != null)
simulatorFrame.openAndStartSimulator(startupSimulationFile);
}
};
runOnEventDispatchThread(openWindow);
return frameRef.get();
}
static void runOnEventDispatchThread(Runnable action) {
Objects.requireNonNull(action, "action");
if (SwingUtilities.isEventDispatchThread()) {
action.run();
return;
}
try {
SwingUtilities.invokeAndWait(action);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new IllegalStateException("Interrupted while launching UI",
e);
} catch (InvocationTargetException e) {
throw new IllegalStateException("Failed to launch UI",
e.getCause());
}
}
static void resetTestHooks() {
splashScreenLauncher = DEFAULT_SPLASH_LAUNCHER;
startupDelay = DEFAULT_STARTUP_DELAY;
simulatorFrameFactory = DEFAULT_FRAME_FACTORY;
}
/**
* The main method.
*
* @param args the arguments
*/
public static void main(String[] args) {
splashScreenLauncher.show();
try {
UIManager.setLookAndFeel(
UIManager.getCrossPlatformLookAndFeelClassName());
} catch (Exception e) { }
Locale.setDefault(Locale.ENGLISH);
javax.swing.JPopupMenu.setDefaultLightWeightPopupEnabled(false);
VSPrefs prefs = VSDefaultPrefs.init();
VSRegisteredEvents.init(prefs);
VSMain.prefs = prefs;
// Wait for splash screen to finish before showing main window
try {
startupDelay.pause();
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
String startupSimulationFile = resolveStartupSimulationFile(args);
launchSimulatorFrame(prefs, null, startupSimulationFile);
}
}
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