实现 #12 MenuBuilder 父级菜单嵌套

src/main/java/me/skymc/taboolib/inventory/builder/MenuBuilder.java

@@ -20,6 +20,7 @@ public class MenuBuilder {
     private boolean lock;
     private String name;
     private int rows = 9;
+    private Inventory parent;
 
     private HashMap<Integer, MenuBuilderItem> items = new HashMap<>();
 
@@ -56,8 +57,13 @@ public class MenuBuilder {
         return this;
     }
 
+    public MenuBuilder parent(Inventory parent) {
+        this.parent = parent;
+        return this;
+    }
+
     public Inventory build() {
-        Inventory inventory = Bukkit.createInventory(new MenuBuilderHolder(lock, items), rows, name);
+        Inventory inventory = Bukkit.createInventory(new MenuBuilderHolder(lock, items, parent), rows, name);
         items.forEach((key, value) -> inventory.setItem(key, value.getItemStack()));
         return inventory;
     }

src/main/java/me/skymc/taboolib/inventory/builder/menu/MenuBuilderHolder.java

@@ -13,10 +13,16 @@ public class MenuBuilderHolder implements InventoryHolder {
 
     private final boolean lock;
     private final HashMap<Integer, MenuBuilderItem> items;
+    private final Inventory parent;
 
-    public MenuBuilderHolder(boolean lock, HashMap<Integer, MenuBuilderItem> items) {
+    public MenuBuilderHolder(boolean lock, HashMap<Integer, MenuBuilderItem> items, Inventory parent) {
         this.lock = lock;
         this.items = items;
+        this.parent = parent;
+    }
+
+    public MenuBuilderHolder(boolean lock, HashMap<Integer, MenuBuilderItem> items) {
+        this(lock, items, null);
     }
 
     @Override
@@ -37,4 +43,8 @@ public class MenuBuilderHolder implements InventoryHolder {
     public HashMap<Integer, MenuBuilderItem> getItems() {
         return items;
     }
+
+    public Inventory getParent() {
+        return parent;
+    }
 }

src/main/java/me/skymc/taboolib/inventory/builder/menu/MenuBuilderListener.java

@@ -1,12 +1,15 @@
 package me.skymc.taboolib.inventory.builder.menu;
 
+import me.skymc.taboolib.Main;
 import me.skymc.taboolib.listener.TListener;
+import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
 import org.bukkit.event.inventory.InventoryAction;
 import org.bukkit.event.inventory.InventoryClickEvent;
+import org.bukkit.event.inventory.InventoryCloseEvent;
 
 import java.util.Optional;
 
@@ -33,4 +36,14 @@ public class MenuBuilderListener implements Listener {
         });
     }
 
+    @EventHandler
+    public void onClose(InventoryCloseEvent event) {
+        if (event.getInventory().getHolder() instanceof MenuBuilderHolder) {
+            MenuBuilderHolder holder = (MenuBuilderHolder) event.getInventory().getHolder();
+            if (holder.getParent() != null) {
+                Bukkit.getScheduler().runTask(Main.getInst(), () -> event.getPlayer().openInventory(holder.getParent()));
+            }
+        }
+    }
+
 }