blocking popups

app/src/main/java/chess/OpenGLMain.java

@@ -11,7 +11,7 @@ public class OpenGLMain {
         Game game = new Game();
         CommandExecutor commandExecutor = new CommandExecutor(game);
 
-        PgnFileSimulator fileSimulator = new PgnFileSimulator(commandExecutor, "games/CastlingTest.pgn");
+        PgnFileSimulator fileSimulator = new PgnFileSimulator(commandExecutor, "games/FoolCheckmate.pgn");
         
         DDDView ddd = new DDDView(commandExecutor);
 

app/src/main/java/chess/view/DDDrender/DDDView.java

@@ -7,7 +7,7 @@ import java.util.function.Consumer;
 
 import chess.controller.commands.*;
 import imgui.ImGui;
-import imgui.type.ImBoolean;
+import imgui.flag.ImGuiWindowFlags;
 import org.joml.Vector2f;
 import org.joml.Vector3f;
 
@@ -44,7 +44,6 @@ public class DDDView extends GameAdapter implements CommandSender {
     private float moveProgress = 0.0f;
 
     private String waitingPopup = null;
-    private final ImBoolean popupOpened = new ImBoolean(false);
 
     public DDDView(CommandExecutor commandExecutor) {
         this.commandExecutor = commandExecutor;
@@ -377,8 +376,14 @@ public class DDDView extends GameAdapter implements CommandSender {
     }
 
     private void renderPopup(String title, String text) {
-        if (ImGui.beginPopupModal(title, popupOpened)) {
+        if (ImGui.beginPopupModal(title, null, ImGuiWindowFlags.AlwaysAutoResize)) {
             ImGui.text(text);
+            if (ImGui.button("Close")) {
+                ImGui.closeCurrentPopup();
+                synchronized (this) {
+                    notifyAll();
+                }
+            }
             ImGui.endPopup();
         }
     }
@@ -397,8 +402,15 @@ public class DDDView extends GameAdapter implements CommandSender {
     }
 
     private void openPopup(String title) {
-        this.popupOpened.set(true);
         this.waitingPopup = title;
+        // block the current thread until the popup is closed
+        synchronized (this) {
+            try {
+                wait();
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            }
+        }
     }
 
     @Override