Allow scheduling FX tasks before FX is initialized via FxThreadUtil

recaf-ui/src/main/java/software/coley/recaf/RecafApplication.java

@@ -45,6 +45,9 @@ public class RecafApplication extends Application implements WorkspaceOpenListen
 
 	@Override
 	public void start(Stage stage) {
+		// Notify the thread util that FX has been initialized
+		FxThreadUtil.onInitialize();
+
 		// Setup global style
 		setUserAgentStylesheet(new RecafTheme().getUserAgentStylesheet());
 

recaf-ui/src/main/java/software/coley/recaf/util/FxThreadUtil.java

@@ -2,9 +2,12 @@
 
 import jakarta.annotation.Nonnull;
 import javafx.application.Platform;
+import software.coley.recaf.RecafApplication;
 import software.coley.recaf.util.threading.ThreadPoolFactory;
 import software.coley.recaf.util.threading.ThreadUtil;
 
+import java.util.ArrayList;
+import java.util.List;
 import java.util.concurrent.Executor;
 
 /**
@@ -17,6 +20,8 @@
  */
 public class FxThreadUtil {
 	private static final Executor jfxExecutor = FxThreadUtil::run;
+	private static final List<Runnable> preInitQueue = new ArrayList<>();
+	private static boolean initialized;
 
 	/**
 	 * Run action in JavaFX thread.
@@ -28,6 +33,12 @@ public static void run(@Nonnull Runnable action) {
 		// Skip under test environment.
 		if (TestEnvironment.isTestEnv()) return;
 
+		// Hold for later if FX has not been initialized.
+		if (!initialized) {
+			preInitQueue.add(action);
+			return;
+		}
+
 		// Wrap action so that if it fails we don't explode and kill the FX thread.
 		action = ThreadUtil.wrap(action);
 
@@ -55,4 +66,14 @@ public static void delayedRun(long delayMs, @Nonnull Runnable action) {
 	public static Executor executor() {
 		return jfxExecutor;
 	}
+
+	/**
+	 * Called by {@link RecafApplication} when it is first initialized.
+	 */
+	public static void onInitialize() {
+		initialized = true;
+		for (Runnable runnable : preInitQueue)
+			run(runnable);
+		preInitQueue.clear();
+	}
 }