Better boot code

core/.classpath

@@ -18,8 +18,9 @@
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>

core/src/main/java/it/cavallium/warppi/WarpPI.java

@@ -1,6 +1,8 @@
 package it.cavallium.warppi;
 
 import java.io.IOException;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Future;
 
 import it.cavallium.warppi.Platform.ConsoleUtils;
 import it.cavallium.warppi.boot.StartupArguments;
@@ -15,15 +17,14 @@ import it.cavallium.warppi.flow.BehaviorSubject;
 import it.cavallium.warppi.flow.Observable;
 import it.cavallium.warppi.gui.DisplayManager;
 import it.cavallium.warppi.gui.HUD;
-import it.cavallium.warppi.gui.HardwareDisplay;
 import it.cavallium.warppi.gui.screens.Screen;
 import it.cavallium.warppi.util.ClassUtils;
+import it.cavallium.warppi.util.RunnableWithException;
 
 public class WarpPI {
 	public static final WarpPI INSTANCE = new WarpPI();
 	private static Platform platform;
 	private static boolean running = false;
-	private static BehaviorSubject<LoadingStatus> loadPhase = BehaviorSubject.create();
 	private final BehaviorSubject<Boolean> loaded = BehaviorSubject.create(false);
 	private Device device;
 
@@ -43,19 +44,18 @@ public class WarpPI {
 	 * @throws InterruptedException 
 	 * @throws IOException 
 	 */ 
-	public static void start(final Platform platform, final Screen screen, final HUD hud, final StartupArguments args)
+	public static Future<Void> start(final Platform platform, final Screen screen, final HUD hud, final StartupArguments args, final RunnableWithException onLoading) throws IOException {
-			throws InterruptedException, IOException {
 		if (WarpPI.running) {
 			throw new RuntimeException("Already running!");
 		} else {
 			WarpPI.running = true;
-			WarpPI.INSTANCE.startEngine(platform, screen, hud, args);
+			return WarpPI.INSTANCE.startInstance(platform, screen, hud, args, onLoading);
 		}
 	}
 
-	private void startEngine(final Platform platform, final Screen screen,
+	private Future<Void> startInstance(final Platform platform, final Screen screen,
-			final HUD hud, final StartupArguments args)
+			final HUD hud, final StartupArguments args, final RunnableWithException onLoading)
-			throws InterruptedException, IOException {
+			throws IOException {
 		WarpPI.platform = platform;
 		platform.getConsoleUtils().out().println("WarpPI Calculator");
 		initializeEnvironment(args);
@@ -63,6 +63,9 @@ public class WarpPI {
 		final Thread currentThread = Thread.currentThread();
 		currentThread.setPriority(Thread.MAX_PRIORITY);
 		WarpPI.getPlatform().setThreadName(currentThread, "Main thread");
+
+		return CompletableFuture.runAsync(() -> {
+			try {
 				final DisplayOutputDevice display = platform.getDisplayOutputDevice();
 				final BacklightOutputDevice backlight = platform.getBacklightOutputDevice();
 				final DisplayManager dm = new DisplayManager(display, backlight, hud, screen, "WarpPI Calculator by Andrea Cavalli (@Cavallium)");
@@ -70,8 +73,13 @@ public class WarpPI {
 				final TouchInputDevice touchscreen = platform.getTouchInputDevice();
 				final InputManager im = new InputManager(keyboard, touchscreen);
 				device = new Device(dm, im);
-
+				device.setup();
-		device.setup(() -> WarpPI.loadPhase.onNext(new LoadingStatus()));
+				onLoading.run();
+				this.loadingCompleted();
+			} catch (Exception ex) {
+				this.loadingFailed(ex);
+			}
+		}).thenRun(this::onShutdown);
 	}
 
 	private void onShutdown() {
@@ -117,10 +125,6 @@ public class WarpPI {
 		return loaded;
 	}
 
-	public Observable<LoadingStatus> getLoadPhase() {
-		return WarpPI.loadPhase;
-	}
-
 	public Device getHardwareDevice() {
 		return device;
 	}
@@ -129,19 +133,13 @@ public class WarpPI {
 		return WarpPI.platform;
 	}
 
-	public static class LoadingStatus {
-		protected LoadingStatus() {
 
-		}
+	private void loadingCompleted() {
-
-		public void done() {
 		WarpPI.INSTANCE.loaded.onNext(true);
 		WarpPI.INSTANCE.device.getDisplayManager().waitForExit();
-			WarpPI.INSTANCE.onShutdown();
 	}
 
-		public void failed() {
+	private void loadingFailed(Exception e) {
-			WarpPI.INSTANCE.onShutdown();
+		e.printStackTrace();
-		}
 	}
 }

core/src/main/java/it/cavallium/warppi/boot/Boot.java

@@ -1,35 +1,32 @@
 package it.cavallium.warppi.boot; 
  
 import java.util.Arrays; 
+import java.util.concurrent.Future; 
  
 import it.cavallium.warppi.WarpPI; 
-import it.cavallium.warppi.WarpPI.LoadingStatus;
 import it.cavallium.warppi.Platform; 
-import it.cavallium.warppi.device.PIHardwareDisplay;
 import it.cavallium.warppi.device.input.PIHardwareTouchDevice; 
 import it.cavallium.warppi.gui.CalculatorHUD; 
 import it.cavallium.warppi.gui.screens.LoadingScreen; 
 import it.cavallium.warppi.math.rules.RulesManager; 
-import it.cavallium.warppi.util.Error;
  
 public class Boot { 
  
 	public static void boot(final Platform platform, final String[] args) throws Exception { 
-		WarpPI.start(platform, new LoadingScreen(), new CalculatorHUD(), Boot.parseStartupArguments(args));
+		Future<Void> execution = WarpPI.start( 
-		WarpPI.INSTANCE.getLoadPhase().subscribe(Boot::loadCalculator);
+				platform, 
+				new LoadingScreen(), 
+				new CalculatorHUD(), 
+				Boot.parseStartupArguments(args), 
+				Boot::loadCalculator); 
+		execution.get(); 
 	} 
  
-	private static void loadCalculator(final LoadingStatus loading) {
+	private static void loadCalculator() throws Exception { 
-		try {
 		WarpPI.INSTANCE.getHardwareDevice().getDisplayManager().setBrightness(0.2f); 
 		//TODO: plugins system: PluginsManager.initialize(); 
 		RulesManager.initialize(); 
 		RulesManager.warmUp(); 
-			loading.done();
-		} catch (InterruptedException | Error e) {
-			e.printStackTrace();
-		}
-		loading.failed();
 	} 
  
 	public static StartupArguments parseStartupArguments(final String[] a) { 

core/src/main/java/it/cavallium/warppi/device/Device.java

@@ -21,12 +21,8 @@ public class Device {
 		return inputManager;
 	}
 
-	public void setup(final Runnable r) {
+	public void setup() {
 		displayManager.initialize();
-		final Thread t = new Thread(r);
-		WarpPI.getPlatform().setThreadDaemon(t, false);
-		WarpPI.getPlatform().setThreadName(t, "Main thread (after setup)");
-		t.start();
 	}
 
 }

core/src/main/java/it/cavallium/warppi/util/RunnableWithException.java

@@ -0,0 +1,5 @@
+package it.cavallium.warppi.util;
+
+public interface RunnableWithException {
+	public void run() throws Exception;
+}

desktop/.classpath

@@ -23,8 +23,9 @@
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>

util/.classpath

@@ -8,13 +8,14 @@
 	</classpathentry>
 	<classpathentry kind="src" output="target/test-classes" path="src/test/java">
 		<attributes>
+			<attribute name="test" value="true"/>
 			<attribute name="optional" value="true"/>
 			<attribute name="maven.pomderived" value="true"/>
-			<attribute name="test" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-11">
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER">
 		<attributes>
+			<attribute name="module" value="true"/>
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>

util/src/main/java/it/cavallium/warppi/util/Error.java

@@ -1,6 +1,6 @@
 package it.cavallium.warppi.util;
 
-public class Error extends java.lang.Throwable {
+public class Error extends java.lang.Exception {
 
 	/**
 	 *