From 1734f378f7ef5e0554790d36626c4904b94270c1 Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Wed, 30 Jan 2019 11:10:04 +1100
Subject: [PATCH] SPIGOT-4598: Shift click on custom workbench inventory causes
 crash

---
 .../org/bukkit/craftbukkit/inventory/CraftContainer.java    | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftContainer.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftContainer.java
index 38175385f3..4c71d9fea1 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftContainer.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftContainer.java
@@ -17,6 +17,7 @@ import net.minecraft.server.ContainerEnchantTable;
 import net.minecraft.server.ContainerFurnace;
 import net.minecraft.server.ContainerHopper;
 import net.minecraft.server.ContainerShulkerBox;
+import net.minecraft.server.ContainerWorkbench;
 import net.minecraft.server.EntityHuman;
 import net.minecraft.server.IInventory;
 import net.minecraft.server.ItemStack;
@@ -175,6 +176,11 @@ public class CraftContainer extends Container {
             this.items = delegate.items;
             this.slots = delegate.slots;
         }
+
+        // SPIGOT-4598 - we should still delegate the shift click handler
+        if (cachedType == InventoryType.WORKBENCH) {
+            delegate = new ContainerWorkbench(bottom, entityhuman.world, entityhuman.getChunkCoordinates());
+        }
     }
 
     private void setupWorkbench(IInventory top, IInventory bottom) {