add destroy and getTitle methode to controllers

src/main/java/de/hsfulda/onses/App.java

@@ -1,18 +1,44 @@
 package de.hsfulda.onses;
 
 import de.hsfulda.onses.controllers.AppController;
+import de.hsfulda.onses.controllers.Controller;
 import de.hsfulda.onses.services.GameService;
 import javafx.application.Application;
+import javafx.scene.Parent;
 import javafx.scene.Scene;
+import javafx.scene.control.Label;
 import javafx.stage.Stage;
 
+import java.io.IOException;
+
 public class App extends Application {
+
+    private Stage stage;
+    private Controller controller;
     @Override
-    public void start(Stage stage) throws Exception {
-        final AppController appController = new AppController(new GameService(), stage);
+    public void start(Stage stage) {
+        this.stage = stage;
+        final AppController appController = new AppController(this, new GameService());
 
         stage.setTitle("Onses - Uno");
-        stage.setScene(new Scene(appController.render()));
+        stage.setScene(new Scene(new Label("Loading...")));
+
+        show(appController);
         stage.show();
     }
+
+    public void show(Controller controller) {
+        try {
+            final Parent parent = controller.render();
+            stage.getScene().setRoot(parent);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+
+        if(this.controller != null) {
+            this.controller.destroy();
+        }
+        this.controller = controller;
+        stage.setTitle(controller.getTitle());
+    }
 }

src/main/java/de/hsfulda/onses/controllers/AppController.java

@@ -1,13 +1,11 @@
 package de.hsfulda.onses.controllers;
 
+import de.hsfulda.onses.App;
 import de.hsfulda.onses.Main;
-import de.hsfulda.onses.models.Game;
 import de.hsfulda.onses.services.GameService;
 import javafx.fxml.FXMLLoader;
 import javafx.scene.Parent;
-import javafx.scene.Scene;
 import javafx.scene.control.Button;
-import javafx.stage.Stage;
 
 import java.io.IOException;
 import java.util.Objects;
@@ -15,11 +13,11 @@ import java.util.Objects;
 public class AppController implements Controller {
 
     private final GameService gameService;
-    private final Stage stage;
+    private final App app;
 
-    public AppController(GameService gameService, Stage stage) {
+    public AppController(App app, GameService gameService) {
+        this.app = app;
          this.gameService = gameService;
-         this.stage = stage;
     }
     @Override
     public Parent render() throws IOException {
@@ -28,13 +26,18 @@ public class AppController implements Controller {
         Button button = (Button) parent.lookup("#startGameBtn");
 
         button.setOnAction(e -> {
-            try {
-                stage.setScene(new Scene(gameController.render()));
-                stage.setTitle("Onses - Uno Game");
-            } catch (IOException ex) {
-                throw new RuntimeException(ex);
-            }
+            app.show(gameController);
         });
         return parent;
     }
+
+    @Override
+    public String getTitle() {
+        return "Onses - Uno";
+    }
+
+    @Override
+    public void destroy() {
+
+    }
 }

src/main/java/de/hsfulda/onses/controllers/CardController.java

@@ -84,4 +84,14 @@ public class CardController implements Controller {
     private String addStyle(String oldStyle, String newStyle) {
         return oldStyle + "; " + newStyle;
     }
+
+    @Override
+    public String getTitle() {
+        return "Onses - Uno Game";
+    }
+
+    @Override
+    public void destroy() {
+
+    }
 }

src/main/java/de/hsfulda/onses/controllers/Controller.java

@@ -6,4 +6,8 @@ import java.io.IOException;
 
 public interface Controller {
     Parent render() throws IOException;
+
+    void destroy();
+
+    String getTitle();
 }

src/main/java/de/hsfulda/onses/controllers/GameController.java

@@ -62,4 +62,14 @@ public class GameController implements Controller {
 
         return parent;
     }
+
+    @Override
+    public String getTitle() {
+        return "Onses - Uno Game";
+    }
+
+    @Override
+    public void destroy() {
+
+    }
 }

src/main/java/de/hsfulda/onses/controllers/PlayerController.java

@@ -9,7 +9,6 @@ import javafx.scene.control.Label;
 import javafx.scene.layout.HBox;
 
 import java.io.IOException;
-import java.util.ArrayList;
 import java.util.Objects;
 
 public class PlayerController implements Controller {
@@ -44,4 +43,14 @@ public class PlayerController implements Controller {
 
         return parent;
     }
+
+    @Override
+    public String getTitle() {
+        return "Onses - Uno Game";
+    }
+
+    @Override
+    public void destroy() {
+
+    }
 }

src/main/resources/de/hsfulda/onses/views/app.fxml

@@ -5,14 +5,14 @@
 <?import javafx.scene.layout.AnchorPane?>
 <?import javafx.scene.text.Font?>
 
-<AnchorPane prefHeight="456.0" prefWidth="683.0" xmlns="http://javafx.com/javafx/21" xmlns:fx="http://javafx.com/fxml/1">
+<AnchorPane prefHeight="690.0" prefWidth="1254.0" xmlns="http://javafx.com/javafx/21" xmlns:fx="http://javafx.com/fxml/1">
    <children>
-      <Label layoutX="252.0" layoutY="96.0" text="Uno Game" AnchorPane.leftAnchor="252.0" AnchorPane.topAnchor="96.0">
+      <Label layoutX="537.0" layoutY="147.0" text="Uno Game" AnchorPane.leftAnchor="537.0" AnchorPane.topAnchor="147.0">
          <font>
             <Font size="34.0" />
          </font>
       </Label>
-      <Button fx:id="startGameBtn" layoutX="274.0" layoutY="257.0" mnemonicParsing="false" text="Start Game" AnchorPane.leftAnchor="274.0" AnchorPane.topAnchor="257.0">
+      <Button fx:id="startGameBtn" layoutX="559.0" layoutY="345.0" mnemonicParsing="false" text="Start Game" AnchorPane.leftAnchor="559.0" AnchorPane.topAnchor="345.0">
          <font>
             <Font size="19.0" />
          </font>

src/main/resources/de/hsfulda/onses/views/game.fxml

@@ -41,5 +41,10 @@
             <Font size="18.0" />
          </font>
       </Button>
+      <Button fx:id="exitBtn" layoutX="1048.0" layoutY="53.0" mnemonicParsing="false" text="return to menu" AnchorPane.rightAnchor="62.0" AnchorPane.topAnchor="53.0">
+         <font>
+            <Font size="16.0" />
+         </font>
+      </Button>
    </children>
 </AnchorPane>

src/test/java/de/hsfulda/onses/GuiTest.java

@@ -10,11 +10,13 @@ import static org.testfx.matcher.control.LabeledMatchers.*;
 
 public class GuiTest extends ApplicationTest {
     private Stage stage;
+    private App app;
 
     @Override
     public void start(Stage stage) throws Exception {
         this.stage = stage;
-        new App().start(stage);
+        app = new App();
+        app.start(stage);
     }
 
     @Test