Fix stat menu performance issue (#302)

* Update StatsMenu.java

* Use SwingUtilities.invokeLater

* use runAsync in invokeLater in StatsMenu

* checkstyle

* extract method

---------

Co-authored-by: supersaiyansubtlety <[email protected]>

Author: PiTheGuy

enigma-swing/src/main/java/org/quiltmc/enigma/gui/element/menu_bar/view/StatsMenu.java

@@ -9,9 +9,12 @@
 
 import javax.swing.JCheckBoxMenuItem;
 import javax.swing.JMenu;
+import javax.swing.SwingUtilities;
 import java.util.HashMap;
 import java.util.Map;
 
+import static java.util.concurrent.CompletableFuture.runAsync;
+
 public class StatsMenu extends AbstractEnigmaMenu {
 	private final JCheckBoxMenuItem enableIcons = new JCheckBoxMenuItem();
 	private final JCheckBoxMenuItem includeSynthetic = new JCheckBoxMenuItem();
@@ -67,17 +70,17 @@ public void updateState(boolean jarOpen, ConnectionState state) {
 
 	private void onEnableIconsClicked() {
 		Config.main().features.enableClassTreeStatIcons.setValue(this.enableIcons.isSelected());
-		this.gui.getController().regenerateAndUpdateStatIcons();
+		this.updateIconsLater();
 	}
 
 	private void onIncludeSyntheticClicked() {
 		Config.main().stats.shouldIncludeSyntheticParameters.setValue(this.includeSynthetic.isSelected());
-		this.gui.getController().regenerateAndUpdateStatIcons();
+		this.updateIconsLater();
 	}
 
 	private void onCountFallbackClicked() {
 		Config.main().stats.shouldCountFallbackNames.setValue(this.countFallback.isSelected());
-		this.gui.getController().regenerateAndUpdateStatIcons();
+		this.updateIconsLater();
 	}
 
 	private void onCheckboxClicked(StatType type) {
@@ -89,6 +92,10 @@ private void onCheckboxClicked(StatType type) {
 			Config.stats().includedStatTypes.value().remove(type);
 		}
 
-		this.gui.getController().regenerateAndUpdateStatIcons();
+		this.updateIconsLater();
+	}
+
+	private void updateIconsLater() {
+		SwingUtilities.invokeLater(() -> runAsync(() -> this.gui.getController().regenerateAndUpdateStatIcons()));
 	}
 }