GUI is working

src/main/java/de/polyfish0/survivalGames/gui/GuiInterface.java

@@ -1,5 +1,6 @@
 package de.polyfish0.survivalGames.gui;
 
+import org.bukkit.event.inventory.InventoryClickEvent;
 import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.InventoryView;
 
@@ -7,4 +8,5 @@ public interface GuiInterface {
     void setInventoryView(InventoryView view);
     Inventory getInventory();
     InventoryView getInventoryView();
+    void click(InventoryClickEvent event);
 }

src/main/java/de/polyfish0/survivalGames/gui/GuiManager.java

@@ -1,15 +1,26 @@
 package de.polyfish0.survivalGames.gui;
 
+import de.polyfish0.survivalGames.annotations.EventClass;
+import org.bukkit.ChatColor;
 import org.bukkit.entity.Player;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.Listener;
+import org.bukkit.event.inventory.InventoryClickEvent;
+import org.bukkit.event.inventory.InventoryCloseEvent;
+import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.InventoryView;
 
 import java.lang.reflect.InvocationTargetException;
 import java.util.EmptyStackException;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.Stack;
 
-public class GuiManager {
+@EventClass
+public class GuiManager implements Listener {
     private final static GuiManager INSTANCE = new GuiManager();
     private final HashMap<Player, Stack<GuiInterface>> interfaceHistory = new HashMap<>();
+    private final HashSet<Inventory> openedGuiInterfaces = new HashSet<>();
 
     public static GuiManager getInstance() {
         return INSTANCE;
@@ -28,7 +39,10 @@ public class GuiManager {
                 interfaceHistory.get(p).push(interfaceInstance);
             }
 
-            interfaceInstance.setInventoryView(p.openInventory(interfaceInstance.getInventory()));
+            p.closeInventory();
+            InventoryView view = p.openInventory(interfaceInstance.getInventory());
+            interfaceInstance.setInventoryView(view);
+            openedGuiInterfaces.add(view.getTopInventory());
         } catch (InstantiationException | IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
             throw new RuntimeException(e);
         }
@@ -44,15 +58,31 @@ public class GuiManager {
     }
 
     public void popInventory(Player p) {
-        GuiInterface lastInterface;
         try {
-            lastInterface = interfaceHistory.get(p).pop();
+            interfaceHistory.get(p).pop().getInventoryView().close();
+
+            InventoryView view = p.openInventory(interfaceHistory.get(p).peek().getInventory());
+            interfaceHistory.get(p).peek().setInventoryView(view);
+            openedGuiInterfaces.add(view.getTopInventory());
         } catch (EmptyStackException e) {
             p.closeInventory();
             return;
         }
+    }
 
-        p.closeInventory();
+    @EventHandler
-        lastInterface.setInventoryView(p.openInventory(lastInterface.getInventory()));
+    public void onInventoryClosed(InventoryCloseEvent e) {
+        getInstance().openedGuiInterfaces.remove(e.getInventory());
+    }
+
+    @EventHandler
+    public void onInventoryClick(InventoryClickEvent e) {
+        if(!(e.getWhoClicked() instanceof Player)) return;
+
+        Player p = (Player) e.getWhoClicked();
+
+        if(!getInstance().interfaceHistory.containsKey(p) || !getInstance().openedGuiInterfaces.contains(e.getClickedInventory())) return;
+
+        getInstance().interfaceHistory.get(p).peek().click(e);
     }
 }

src/main/java/de/polyfish0/survivalGames/gui/menus/MainMenu.java

@@ -4,6 +4,7 @@ import de.polyfish0.survivalGames.annotations.EventClass;
 import de.polyfish0.survivalGames.gui.GuiInterface;
 import de.polyfish0.survivalGames.gui.GuiManager;
 import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
@@ -18,8 +19,7 @@ import java.util.HashMap;
 import java.util.UUID;
 import java.util.function.Consumer;
 
-@EventClass
+public class MainMenu implements GuiInterface {
-public class MainMenu implements GuiInterface, Listener {
     private Inventory inventory;
     private final HashMap<ItemStack, Consumer<Player>> methodRegister = new HashMap<>();
     private InventoryView inventoryView;
@@ -47,11 +47,8 @@ public class MainMenu implements GuiInterface, Listener {
         return inventory;
     }
 
-    @EventHandler
+    @Override
-    public void onClick(InventoryClickEvent e) {
+    public void click(InventoryClickEvent e) {
-        if(e.getClickedInventory() != inventoryView.getInventory(0))
-            return;
-
         if(!methodRegister.containsKey(e.getCurrentItem())) {
             e.setCancelled(true);
             return;
@@ -63,8 +60,6 @@ public class MainMenu implements GuiInterface, Listener {
     @Override
     public void setInventoryView(InventoryView view) {
         inventoryView = view;
-        System.out.println(view);
-        System.out.println(inventoryView);
     }
 
     @Override