From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: JRoy <joshroy126@gmail.com>
Date: Fri, 5 Jun 2020 18:24:06 -0400
Subject: [PATCH] Add and implement PlayerRecipeBookClickEvent


diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
index 61d5b5001979751da986fd8a634a58094c172946..5069017665f98a8b3900220b01ca4b99bc8d2f93 100644
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
@@ -2805,9 +2805,14 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
         PacketUtils.ensureRunningOnSameThread(packet, this, this.player.getLevel());
         this.player.resetLastActionTime();
         if (!this.player.isSpectator() && this.player.containerMenu.containerId == packet.getContainerId() && this.player.containerMenu instanceof RecipeBookMenu) {
-            this.server.getRecipeManager().byKey(packet.getRecipe()).ifPresent((irecipe) -> {
-                ((RecipeBookMenu) this.player.containerMenu).handlePlacement(packet.isShiftDown(), irecipe, this.player);
-            });
+            // Paper start - fire event for clicking recipes in the recipe book
+            com.destroystokyo.paper.event.player.PlayerRecipeBookClickEvent event = new com.destroystokyo.paper.event.player.PlayerRecipeBookClickEvent(
+                player.getBukkitEntity(), org.bukkit.craftbukkit.util.CraftNamespacedKey.fromMinecraft(packet.getRecipe()), packet.isShiftDown());
+            if (event.callEvent() && this.player.containerMenu instanceof RecipeBookMenu<?> recipeBookMenu) { // check if inventory changed during event handling
+                this.server.getRecipeManager().byKey(org.bukkit.craftbukkit.util.CraftNamespacedKey.toMinecraft(event.getRecipe())).ifPresent((irecipe) -> {
+                    recipeBookMenu.handlePlacement(event.isMakeAll(), irecipe, this.player);
+                });
+            } // Paper end
         }
     }