add simple sfx for opening and closing apps

src/main/java/edu/ntnu/idi/idatt2003/gruppe42/Audio/AudioManager.java

@@ -7,7 +7,7 @@
 
 public class AudioManager {
 
-  private AudioManager instance = new AudioManager();
+  private static AudioManager instance = new AudioManager();
   private Map<SoundEffect, AudioClip> sounds = new EnumMap<>(SoundEffect.class);
   private double volume = 1.0;
 
@@ -25,7 +25,7 @@ public AudioManager() {
     }
   }
 
-  public AudioManager getInstance() {
+  public static AudioManager getInstance() {
     return instance;
   }
 

src/main/java/edu/ntnu/idi/idatt2003/gruppe42/Audio/SoundEffect.java

@@ -2,8 +2,8 @@
 
 public enum SoundEffect {
 
-  OPEN_APP("/Audio/mouse_click.wav"),
-  CLOSE_APP("/Audio/mouse_click.wav");
+  OPEN_APP("/Audio/open_app.wav"),
+  CLOSE_APP("/Audio/close_app.wav");
 
   private String path;
 

src/main/java/edu/ntnu/idi/idatt2003/gruppe42/Controller/PopupsController.java

@@ -1,5 +1,7 @@
 package edu.ntnu.idi.idatt2003.gruppe42.Controller;
 
+import edu.ntnu.idi.idatt2003.gruppe42.Audio.AudioManager;
+import edu.ntnu.idi.idatt2003.gruppe42.Audio.SoundEffect;
 import edu.ntnu.idi.idatt2003.gruppe42.Model.App;
 import edu.ntnu.idi.idatt2003.gruppe42.View.Popup;
 import java.util.List;
@@ -12,6 +14,7 @@
 public final class PopupsController {
 
   private final List<Popup> popups;
+  private AudioManager audioManager = AudioManager.getInstance();
 
   public PopupsController(List<Popup> popups) {
     this.popups = popups;
@@ -35,6 +38,7 @@ public boolean show(App type) {
           popup.getRoot().autosize();
           popup.getRoot().toFront();
         });
+    audioManager.play(SoundEffect.OPEN_APP);
     return true;
   }
 
@@ -43,6 +47,7 @@ public boolean hide(Popup popup) {
       return false;
     }
     popup.getRoot().setVisible(false);
+    audioManager.play(SoundEffect.CLOSE_APP);
     return true;
   }