Created new abstract Controller class with load methods.

- loadScene method to load into current stage
- loadPopupScene method to load into a new window
- icon added to popup windows
- load methods return Controller of the new scee
- KeyBindingsController extends new Controller class and works correctly

#story[1261]

racevisionGame/src/main/java/visualiser/Controllers/KeyBindingsController.java

@@ -1,6 +1,7 @@
 package visualiser.Controllers;
 
 import javafx.application.Platform;
+import javafx.event.EventHandler;
 import javafx.fxml.FXML;
 import javafx.fxml.FXMLLoader;
 import javafx.scene.Parent;
@@ -13,6 +14,7 @@ import javafx.scene.layout.AnchorPane;
 import javafx.stage.Modality;
 import javafx.stage.Stage;
 import javafx.stage.WindowEvent;
+import visualiser.Controllers2.Controller;
 import visualiser.gameController.Keys.ControlKey;
 import visualiser.gameController.Keys.KeyFactory;
 
@@ -25,7 +27,7 @@ import static visualiser.app.App.keyFactory;
 /**
  * Controller for the scene used to display and update current key bindings.
  */
-public class KeyBindingsController {
+public class KeyBindingsController extends Controller{
     private @FXML Button btnSave;
     private @FXML Button btnCancel;
     private @FXML Button btnReset;
@@ -43,6 +45,7 @@ public class KeyBindingsController {
         initializeTable();
         populateTable();
         setKeyListener();
+        setClosedListener();
     }
 
     /**
@@ -115,6 +118,29 @@ public class KeyBindingsController {
         return newKeyFactory;
     }
 
+    /**
+     * Creates a listener for when a user tries to close the current window.
+     */
+    public void setClosedListener(){
+        anchor.sceneProperty().addListener((obsS, oldS, newS) -> {
+            if (newS != null) {
+                newS.windowProperty().addListener((obsW, oldW, newW) -> {
+                    if (newW != null) {
+                        Stage stage = (Stage)newW;
+                        // WE is processed by onExit method
+                        stage.setOnCloseRequest(new EventHandler<WindowEvent>() {
+                            public void handle(WindowEvent we) {
+                                if (we.getEventType() == WindowEvent.WINDOW_CLOSE_REQUEST) {
+                                    onExit(we);
+                                }
+                            }
+                        });
+                    }
+                });
+            }
+        });
+    }
+
     /**
      * Creates a listener for the base anchorpane for key presses.
      * It updates the current key bindings of the {@link KeyFactory} if

racevisionGame/src/main/java/visualiser/Controllers/MainController.java

@@ -3,7 +3,6 @@ package visualiser.Controllers;
 import javafx.collections.ObservableList;
 import javafx.fxml.FXML;
 import javafx.scene.layout.AnchorPane;
-import visualiser.app.App;
 import visualiser.gameController.ControllerClient;
 import visualiser.model.VisualiserBoat;
 import visualiser.model.VisualiserRaceEvent;
@@ -99,7 +98,7 @@ public class MainController extends Controller {
         raceController.setParent(this);
         connectionController.setParent(this);
         finishController.setParent(this);
-        titleController.setParent(this);
+//        titleController.setParent(this);
         hostController.setParent(this);
         lobbyController.setParent(this);
 

racevisionGame/src/main/java/visualiser/Controllers/TitleController.java

@@ -1,16 +1,11 @@
 package visualiser.Controllers;
 
-import javafx.event.EventHandler;
 import javafx.fxml.FXML;
-import javafx.fxml.FXMLLoader;
-import javafx.scene.Parent;
-import javafx.scene.Scene;
 import javafx.scene.control.Button;
 import javafx.scene.control.RadioButton;
 import javafx.scene.layout.AnchorPane;
 import javafx.stage.Modality;
-import javafx.stage.Stage;
-import javafx.stage.WindowEvent;
+import visualiser.Controllers2.Controller;
 import visualiser.app.App;
 
 import java.io.IOException;
@@ -42,7 +37,7 @@ public class TitleController extends Controller {
      */
     public void hostAGame() throws IOException {
         titleWrapper.setVisible(false);
-        parent.hostGame();
+//        parent.hostGame();
         App.getStage().setResizable(true);
     }
 
@@ -59,7 +54,7 @@ public class TitleController extends Controller {
      */
     public void joinAGame() {
         titleWrapper.setVisible(false);
-        parent.enterLobby();
+//        parent.enterLobby();
         App.getStage().setResizable(true);
     }
 
@@ -81,7 +76,7 @@ public class TitleController extends Controller {
         dayModeRD.setSelected(false);
     }
 
-    @Override
+//    @Override
     public void initialize(URL location, ResourceBundle resources) {
     }
 
@@ -90,26 +85,9 @@ public class TitleController extends Controller {
      */
     public void controlBtnPressed(){
         try {
-            FXMLLoader loader = new FXMLLoader();
-            loader.setLocation(getClass().getResource("/visualiser/scenes/keyBindings.fxml"));
-            Parent layout = loader.load();
-            Scene scene = new Scene(layout);
-            Stage popupStage = new Stage();
-            popupStage.setResizable(false);
-            popupStage.setTitle("Game Controls");
-            popupStage.initModality(Modality.WINDOW_MODAL);
-            popupStage.centerOnScreen();
-            popupStage.setScene(scene);
-            popupStage.show();
-            KeyBindingsController controller = loader.getController();
-            popupStage.setOnCloseRequest(new EventHandler<WindowEvent>() {
-                public void handle(WindowEvent we) {
-                    if (we.getEventType() == WindowEvent.WINDOW_CLOSE_REQUEST) {
-                        controller.onExit(we);
-                    }
-                }
-            });
-        } catch (Exception  e){
+            loadPopupScene("/visualiser/scenes/keyBindings.fxml",
+                    "Game Controls", Modality.WINDOW_MODAL);
+        } catch (IOException e) {
             e.printStackTrace();
         }
     }

racevisionGame/src/main/java/visualiser/Controllers2/Controller.java

@@ -0,0 +1,62 @@
+package visualiser.Controllers2;
+
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Parent;
+import javafx.scene.Scene;
+import javafx.scene.image.Image;
+import javafx.stage.Modality;
+import javafx.stage.Stage;
+import visualiser.app.App;
+
+import java.io.IOException;
+
+/**
+ * Abstract controller class to give each subclass the functionality to load
+ * a new scene into the existing stage, or create a new popup window.
+ */
+public abstract class Controller {
+
+    /**
+     * Used to load a new scene in the currently open stage.
+     * @param fxmlUrl the URL of the FXML file to be loaded
+     * @return the controller of the new scene
+     * @throws IOException if there is an issue with the fxmlUrl
+     */
+    protected Controller loadScene(String fxmlUrl) throws IOException {
+        FXMLLoader loader = new FXMLLoader();
+        loader.setLocation(getClass().getResource(fxmlUrl));
+        Parent root = loader.load();
+        Stage stage = App.getStage();
+        Scene scene = new Scene(root);
+        stage.setScene(scene);
+        stage.show();
+
+        return loader.getController();
+    }
+
+    /**
+     * Used to load a scene in a new separate popup stage.
+     * @param fxmlUrl the URL of the FXML file to be loaded
+     * @param title title for the new window
+     * @param modality modality settings for popup window
+     * @return the controller of the new scene
+     * @throws IOException if there is an issue with the fxmlUrl
+     */
+    protected Controller loadPopupScene(String fxmlUrl, String title, Modality
+            modality) throws IOException {
+        FXMLLoader loader = new FXMLLoader();
+        loader.setLocation(getClass().getResource(fxmlUrl));
+        Parent root = loader.load();
+        Stage stage = new Stage();
+        stage.initModality(modality);
+        stage.setTitle(title);
+        stage.centerOnScreen();
+        stage.getIcons().add(new Image(getClass().getClassLoader().getResourceAsStream("images/SailIcon.png")));
+        Scene scene = new Scene(root);
+        stage.setScene(scene);
+        stage.show();
+
+        return loader.getController();
+    }
+
+}