Executor improvement

src/me/ByteEdit/boxes/CompilationBox.java

@@ -106,7 +106,7 @@ public class CompilationBox extends JFrame {
 							null, Arrays.asList(new JavaSourceFromString("Compiled", source))).call();
 					String res = out.toString();
 					if (res.isEmpty()) {
-						SingleThreadedExecutor.execute(() -> {
+						SingleThreadedExecutor.submit(() -> {
 							try {
 								File clazz = new File(tmpFolder, "Compiled.class");
 								ByteArrayOutputStream baos = new ByteArrayOutputStream();

src/me/ByteEdit/boxes/GlobalSearchBox.java

@@ -1,8 +1,6 @@
 package me.ByteEdit.boxes;
 
 import java.awt.Toolkit;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
 import java.awt.event.KeyEvent;
 import java.util.HashSet;
 import java.util.Set;

src/me/ByteEdit/boxes/GlobalSearchOpenBox.java

@@ -37,7 +37,7 @@ public class GlobalSearchOpenBox extends JFrame {
 		JList<Info> list = new JList(model);
 		list.addListSelectionListener(new ListSelectionListener() {
 			public void valueChanged(ListSelectionEvent e) {
-				SingleThreadedExecutor.execute(() -> {
+				SingleThreadedExecutor.submit(() -> {
 					Info val = list.getSelectedValue();
 					if (val != null && !val.owner.equals(Main.currentNodeName)) {
 						Main.selectFile(val.nodePath);

src/me/ByteEdit/boxes/RenameBox.java

@@ -211,7 +211,7 @@ public class RenameBox extends JFrame {
 					}
 				}
 
-				SingleThreadedExecutor.execute(() -> {
+				SingleThreadedExecutor.submit(() -> {
 					// refresh
 					Main.decompileCurrentNode();
 					name = newName;

src/me/ByteEdit/boxes/TypeOpenBox.java

@@ -44,7 +44,7 @@ public class TypeOpenBox extends JFrame {
 			public void valueChanged(ListSelectionEvent e) {
 				String val = list.getSelectedValue();
 				if (val != null && !val.equals(Main.currentNodeName)) {
-					SingleThreadedExecutor.execute(() -> Main.selectFile(val));
+					SingleThreadedExecutor.submit(() -> Main.selectFile(val));
 				}
 			}
 		});

src/me/ByteEdit/decompiler/SingleThreadedExecutor.java

@@ -4,16 +4,30 @@ import java.util.concurrent.LinkedBlockingQueue;
 
 public class SingleThreadedExecutor {
 
+	// We don't need to run every Runnable,
+	// we only care about the last submitted Runnable.
+	private static final Object lock = new Object();
+	private static Runnable runnable;
 	private static final LinkedBlockingQueue<Runnable> queue = new LinkedBlockingQueue<>();
 
 	private static final Thread thread = new Thread(() -> {
-		while (true) {
 		try {
-				queue.take().run();
+			while (true) {
+				Runnable r = null;
+				synchronized (lock) {
+					while (runnable == null)
+						lock.wait();
+					r = runnable;
+					runnable = null;
+				}
+				try {
+					r.run();
 				} catch (Throwable e) {
 					e.printStackTrace();
 				}
 			}
+		} catch (InterruptedException e) {
+		}
 	}, "SingleThreadedExecutor");
 
 	static {
@@ -21,7 +35,10 @@ public class SingleThreadedExecutor {
 		thread.start();
 	}
 
-	public static void execute(Runnable r) {
+	public static void submit(Runnable r) {
-		queue.add(r);
+		synchronized (lock) {
+			runnable = r;
+			lock.notifyAll();
+		}
 	}
 }

src/me/ByteEdit/main/Main.java

@@ -513,7 +513,7 @@ public class Main extends JFrame {
 		});
 		scrollPane.setViewportView(tree);
 		tree.addTreeSelectionListener(e -> SingleThreadedExecutor
-				.execute(() -> selectFile(((ByteEditTreeNode) e.getPath().getLastPathComponent()).path)));
+				.submit(() -> selectFile(((ByteEditTreeNode) e.getPath().getLastPathComponent()).path)));
 		new DropTarget(tree, new DropTargetListener() {
 
 			@Override
@@ -606,7 +606,7 @@ public class Main extends JFrame {
 			@Override
 			public void keyReleased(KeyEvent e) {
 				if (e.getKeyCode() == 116 && currentNodeName != null) { // F5
-					SingleThreadedExecutor.execute(Main::decompileCurrentNode);
+					SingleThreadedExecutor.submit(Main::decompileCurrentNode);
 				}
 			}
 		});
@@ -661,7 +661,7 @@ public class Main extends JFrame {
 			public void itemStateChanged(ItemEvent e) {
 				if (e.getStateChange() == ItemEvent.SELECTED) {
 					EnumDecompiler selected = (EnumDecompiler) e.getItem();
-					SingleThreadedExecutor.execute(() -> {
+					SingleThreadedExecutor.submit(() -> {
 						decompiler = selected;
 						if (currentNodeName != null) {
 							decompileCurrentNode();