From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Janet Blackquill <uhhadd@gmail.com>
Date: Sun, 7 Apr 2024 16:52:42 -0400
Subject: [PATCH] Add CartographyItemEvent


diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 2ad17823bf442ce0455227b64e5d3bb10d0ee2c1..fe2ef36ab5dc4b933abf24dbfd0e811c53239cf0 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -3101,6 +3101,19 @@ public class ServerGamePacketListenerImpl extends ServerCommonPacketListenerImpl
                             }
                         }
 
+                        // Paper start - cartography item event
+                        if (packet.getSlotNum() == net.minecraft.world.inventory.CartographyTableMenu.RESULT_SLOT && top instanceof org.bukkit.inventory.CartographyInventory cartographyInventory) {
+                            org.bukkit.inventory.ItemStack result = cartographyInventory.getResult();
+                            if (result != null && !result.isEmpty()) {
+                                if (click == ClickType.NUMBER_KEY) {
+                                    event = new io.papermc.paper.event.player.CartographyItemEvent(inventory, type, packet.getSlotNum(), click, action, packet.getButtonNum());
+                                } else {
+                                    event = new io.papermc.paper.event.player.CartographyItemEvent(inventory, type, packet.getSlotNum(), click, action);
+                                }
+                            }
+                        }
+                        // Paper end - cartography item event
+
                         event.setCancelled(cancelled);
                         AbstractContainerMenu oldContainer = this.player.containerMenu; // SPIGOT-1224
                         this.cserver.getPluginManager().callEvent(event);
diff --git a/src/main/java/net/minecraft/world/inventory/CartographyTableMenu.java b/src/main/java/net/minecraft/world/inventory/CartographyTableMenu.java
index 45bf1c95d86bdfc709c5f1a1fbefb18e1cc51f4c..5ae3fd3ec22b4c3aa6bbd0cbda770f39dcab24a1 100644
--- a/src/main/java/net/minecraft/world/inventory/CartographyTableMenu.java
+++ b/src/main/java/net/minecraft/world/inventory/CartographyTableMenu.java
@@ -69,7 +69,7 @@ public class CartographyTableMenu extends AbstractContainerMenu {
         this.resultContainer = new ResultContainer(this.createBlockHolder(context)) { // Paper - Add missing InventoryHolders
             @Override
             public void setChanged() {
-                CartographyTableMenu.this.slotsChanged(this);
+                // CartographyTableMenu.this.slotsChanged(this); // Paper - Add CatographyItemEvent - do not recompute results if the result slot changes - allows to set the result slot via api
                 super.setChanged();
             }